No-freewheeling arc lightning protection gap protecting device

Abstract

Disclosed is a no-freewheeling arc lightning protection gap protecting device, comprising a grounding-side arc extinguishing device, and a grounding-side fitting and a conducting wire-side fitting installed at two ends of a circuit insulator string via fixing devices. The grounding-side arc extinguishing device comprises a thunder and lightning pulse acquisition device, an insulating sealing shell, a gas generating device and an arc extinguishing chamber. The other end of the grounding-side fitting is equipped with a connecting fine pipe. The grounding-side arc extinguishing device also comprises a tubular earth electrode made of a nonmetal conductive material and an L-shaped earth electrode. One end of the L-shaped earth electrode is inlaid in and connected with the connecting fine pipe on the grounding-side fitting via a Z-shaped connecting fitting, and the other end of the L-shaped earth electrode penetrates the thunder and lightning pulse acquisition device and is connected with the tubular earth electrode. One end of the nonmetal conductive material tubular earth electrode is internally inlaid in the arc extinguishing chamber, and the other end is connected with the insulating sealing shell. The device improves the electric power system stability and prolongs the service life of the electric power equipment such as transformer and breaker, and has low production and maintenance cost.

Claims

1. A no-freewheeling arc lightning protection gap protecting device, comprising a grounding-side are extinguishing device, a grounding-side fitting (2) and a conducting wire-side fitting (13), the grounding-side fitting (2) and the conducting wire-side fitting (13) being installed at two ends of a circuit insulator string (1), respectively, via fixing devices; the wounding-side arc extinguishing device being installed at one end of the grounding-side fitting (2); the grounding-side arc extinguishing device comprising a thunder and lightning pulse acquisition device (11), an insulating sealing shell (5), a gas generating device (6) and an arc extinguishing chamber (10), the gas generating device (6) being located inside the insulating sealing shell (5); wherein the grounding-side arc extinguishing device further comprises a tubular earth electrode (7) made of nonmetal conductive material, one end of the tubular earth electrode (7) is internally embedded in the arc extinguishing chamber (10), the other end of the tubular earth electrode (7) is connected with the insulating sealing shell (5); the one end of the grounding-side fitting (2) is equipped with a connecting fine pipe (3); the grounding-side arc extinguishing device is inlaid in and connected with the connecting fine pipe (3) located on the grounding-side fitting (2) via a Z-shaped connecting fitting (4), the other end of the Z-shaped connecting fitting (4) is connected with the tubular earth electrode (7) via a connecting-line penetrating the thunder and lightning pulse acquisition device (11).

2. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein the grounding-side arc extinguishing device further comprises a L-shaped earth electrode (12) made of nonmetal conductive material, one end of the L-shaped earth electrode (12) is connected with the Z-shaped connecting fitting (4), the other end of L-shaped earth electrode (12) penetrates the thunder and lightning pulse acquisition device (11) and is connected with the tubular earth electrode (7).

3. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein the gas generating device (6) comprises an arc extinguishing gas capsule and a gas capsule insulating base (20); a trigger electrode (18) and a short circuit ring (22) are located at the arc extinguishing gas capsule; a fixed electrode (17) is located at a position of the gas capsule insulating base (20) corresponding to the trigger electrode (18), and the fixed electrode (17) is connected with an electrode of the thunder and lightning pulse acquisition device (11).

4. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 3, wherein the arc extinguishing gas capsule comprises a electricity and heat converting device (21) and a solid gas generating material device (19); the electricity and heat converting device (21) converts the electrical pulse transmitted from the thunder and lightning pulse acquisition device (11) into heat energy; the solid gas generating material device (19) generates a lot of gas on the condition of high temperature and high voltage.

5. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein the gas generating devices (6) of the grounding-side arc extinguishing device are arranged in a way of superposition in axial direction in the insulating sealing shell (5), and each of the gas generating devices (6) comprises an embed sheet iron (14) located inside the gas generating device (6); the insulating sealing shell (5) of the grounding-side are extinguishing device comprises a high yield magnet (15) and a switch sheet metal (16) located inside the insulating sealing shell (5); when an electric power transmission line is struck by lightning for the first time, a first gas generating device (6-1) starts and does arc extinguishing, then automatically detaches from the grounding-side arc extinguishing device, a second gas generating device (6-2) falls into a previous position of the first gas generating device (6-1), a third gas generating device (6-3) falls into a previous position of the second gas generating device (6-2), the embed sheet iron (14) of the second gas generating device (6-2) is attracted by the high yield magnet (15), the trigger electrode (18) of the second gas generating device (6-2) connects with the electrode of the thunder and lightning pulse acquisition device (11) reliably, one action of the arc extinguishing triggered by lightning is finished.

6. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 5, wherein a groove (27) is defined on the insulating sealing shell (5), and the groove (27) counteracts a recoil generated by the gas generating device (6) when the gas generating device (6) starts.

7. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 5, wherein more than one gas generating device (6) are located in the grounding-side arc extinguishing device, and a front end of the gas generating device (6) comprises a digital mark.

8. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

9. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

10. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface, of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

11. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 1, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

12. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein the gas generating device (6) comprises an arc extinguishing gas capsule and a gas capsule insulating base (20); a trigger electrode (18) and a short circuit ring (22) are located at the arc extinguishing gas capsule; a fixed electrode (17) is located at a position of the gas capsule insulating base (20) corresponding to the trigger electrode (18), and the fixed electrode (17) is connected with an electrode of the thunder and lightning pulse acquisition device (11).

13. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 12, wherein the arc extinguishing gas capsule comprises a electricity and heat converting device (21) and a solid gas generating material device (19); the electricity and heat converting device (21) converts the electrical pulse transmitted from the thunder and lightning pulse acquisition device (11) into heat energy; the solid gas generating material device (19) generates a lot of gas on the condition of high temperature and high voltage.

14. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein the gas generating devices (6) of the grounding-side arc extinguishing device are arranged in a way of superposition in axial direction in the insulating sealing shell (5), and each of the gas generating devices (6) comprises an embed sheet iron (14) located inside the gas generating device (6); the insulating sealing shell (5) of the grounding-side arc extinguishing device comprises a high yield magnet (15) and a switch sheet metal (16) located inside the insulating sealing shell (5); when an electric power transmission line is struck by lightning for the first time, a first gas generating device (6-1) starts and does arc extinguishing, then automatically detaches from the grounding-side arc extinguishing device, a second gas generating device (6-2) falls into a previous position of the first gas generating device (6-1), a third gas generating device (6-3) falls into a previous position of the second gas, generating device (6-2), the embed sheet iron (14) of the second gas generating device (6-2) is attracted by the high yield magnet (15), the trigger electrode (18) of the second gas generating device (6-2) connects with the electrode of the thunder and lightning pulse acquisition device (11) reliably, one action of the arc extinguishing triggered by lightning is finished.

15. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 4, wherein the gas generating devices (6) of the grounding-side arc extinguishing device are arranged in away of superposition in axial direction in the insulating sealing shell (5), and each of the gas generating devices (6) comprises an embed sheet iron (14) located inside the gas generating device (6); the insulating sealing shell (5) of the grounding-side are extinguishing device comprises a high yield magnet (15) and a switch sheet metal (16) located inside the insulating sealing shell (5); when an electric power transmission line is struck by lighting for the first time, a first gas generating device (6-1) starts and does arc extinguishing, then automatically detaches from the grounding-side arc extinguishing device, a second gas generating device (6-2) falls into a previous position of the first gas generating device (6-1), a third gas generating device (6-3) falls into a previous position of the second gas generating device (6-2), the embed sheet iron (14) of the second gas generating device (6-2) is attracted by the high yield magnet (15), the trigger electrode (18) of the second gas generating device (6-2) connects with the electrode of the thunder and lightning pulse acquisition device (11) reliably, one action of the arc extinguishing triggered by lightning is finished.

16. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 13, wherein the gas generating devices (6) of the grounding-side arc extinguishing device are arranged in a way of superposition in axial direction in the insulating sealing shell (5), and each of the gas generating devices (6) comprises an embed sheet iron (14) located inside the gas generating device (6); the insulating sealing shell (5) of the grounding-side arc extinguishing device comprises a high yield magnet (15) and a switch sheet metal (16) located inside the insulating sealing shell (5); when an electric power transmission line is struck by lightning for the first time, a first gas generating device (6-1) starts and does arc extinguishing, then automatically detaches from the grounding-side arc extinguishing device, a second gas generating device (6-2) falls into a previous position of the first gas generating device (6-1), a third gas generating device (6-3) falls into a previous position of the second gas generating device (6-2), the embed sheet iron (14) of the second gas generating device (6-2) is attracted by the high yield magnet (15), the trigger electrode (18) of the second gas generating device (6-2) connects with the electrode of the thunder and lightning pulse acquisition device (11) reliably, one action of the arc extinguishing triggered by lightning is finished.

17. The no-freewheeling am lightning protection gap protecting device as set forth in claim 14, wherein a groove (27) is defined on the insulating sealing shell (5), and the groove (27) counteracts a recoil generated by the gas generating device (6) when the gas generating device (6) starts.

18. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 15, wherein a groove (27) is defined on the insulating sealing shell (5), and the groove (27) counteracts a recoil generated by the gas generating device (6) when the gas generating device (6) starts.

19. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 16, wherein a groove (27) is defined on the insulating sealing shell (5), and the groove (27) counteracts a recoil generated by the gas generating device (6) when the gas generating device (6) starts.

20. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 14, wherein more than one gas generating device (6) are located in the grounding-side arc extinguishing device, and a front end of the gas generating device (6) comprises a digital mark.

21. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 15, wherein more than one gas generating device (6) are located in the grounding-side arc extinguishing device, and a front end of the gas generating device (6) comprises a digital mark.

22. The no-freewheeling, arc lightning protection gap protecting device as set forth in claim 16, wherein more than one gas generating device (6) are located in the grounding-side arc extinguishing device, and a front end of the gas generating device (6) comprises a digital mark.

23. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

24. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 4, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

25. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 13, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

26. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 6, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

27. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 17, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

28. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 18, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

29. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 19, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

30. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 7, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

31. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 20, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

32. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 21, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

33. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 22, wherein the grounding-side fitting (2) and/or the conducting wire-side fitting (13) connect/connects with the circuit insulator string (1) by double nuts (26).

34. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

35. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 4; wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator sting (1).

36. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 13, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

37. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 6, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

38. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 17, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

39. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 18, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

40. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 19, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

41. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 7, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

42. The no-freewheeling are lightning protection gap protecting device as set forth in claim 20, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

43. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 21, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

44. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 22, wherein a jut (28) is located at a surface at where a connecting sheet of the grounding-side fitting (2) and/or the conducting wire-side fitting (13) contacts the circuit insulator string (1).

45. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

46. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 4, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

47. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 13, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive are extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

48. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 6, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

49. The no-freewheeling are lightning protection gap protecting device as set forth in claim 17, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

50. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 18, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

51. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 19, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

52. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 7, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

53. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 20, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

54. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 21, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

55. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 22, wherein a gas generating material pipe (23) is located on the grounding-side fitting (2), and the gas generating material pipe (23) is sleeved on an outer surface of the grounding-side fitting (2), a passive arc extinguishing gap (24) and a whiffing hole (25) are defined inside the gas generating material pipe (23).

56. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 2, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

57. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 4, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

58. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 13, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

59. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 6, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

60. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 17, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

61. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 18, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

62. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 19, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

63. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 7, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the are extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

64. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 20, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the are extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

65. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 21, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the arc extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

66. The no-freewheeling arc lightning protection gap protecting device as set forth in claim 22, wherein an internal metal arcing ring (9) is located on a whiffing port of the arc extinguishing chamber (10), an outer ripple (8) is located outside the are extinguishing chamber (10), and the tubular earth electrode (7) and the conducting wire-side fitting (13) collectively form a protecting gap.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a view illustrating configuration of an embodiment of the present invention.

(2) FIG. 2 is a view illustrating the arrangement of the gas generating device of the grounding-side arc extinguishing device in FIG. 1.

(3) FIG. 3 is a view illustrating the internal configuration of gas generating device in accordance with an embodiment of the present invention.

(4) FIG. 4 is a view illustrating a fitting with configuration of passive arc extinguishing gap used in the present invention.

(5) FIG. 5 is a view illustrating the connecting configuration of double-nut of the present invention.

(6) FIG. 6 is a view illustrating the connecting configuration of the jut of the present invention.

REFERENCE SIGNS LIST

(7) 1—circuit insulator string, 2—grounding-side fitting, 3—connecting fine pipe, 4—Z-shaped connecting fitting, 5—insulating sealing shell, 6—gas generating device, 6-1—first gas generating device, 6-2—second gas generating device, 6-3—third gas generating device, 7—tubular earth electrode, 8—outer ripple, 9—internal metal arcing ring, 10—arc extinguishing chamber, 11—thunder and lightning pulse acquisition device, 12—L-shaped earth electrode, 13—conducting wire-side fitting, 14—embed sheet iron, 15—high field magnet, 16—switch sheet metal, 17—fixed electrode, 18—trigger electrode, 19—solid gas generating material device, 20—gas capsule insulating base, 21 electricity and heat converting device, 22—short circuit ring, 23—gas generating material pipe, 24—passive arc extinguishing gap, 25—whiffing hole, 26—nut, 27—groove, 28—jut.

DESCRIPTION OF EMBODIMENTS

(8) Following will describe the present invention in detail with the reference of drawings.

Embodiment 1

(9) As illustrated in FIG. 1, a no-freewheeling arc lightning protection gap protecting device, comprising a grounding-side arc extinguishing device, a grounding-side fitting 2 and a conducting wire-side fitting 13, the grounding-side fitting 2 and the conducting wire-side fitting 13 being installed at two ends of a circuit insulator string 1, respectively, via fixing devices; the grounding-side arc extinguishing device being installed at one end of the grounding-side fitting 2; the grounding-side arc extinguishing device comprising a thunder and lightning pulse acquisition device 11, an insulating sealing shell 5, a gas generating device 6 and an arc extinguishing chamber 10, the gas generating device 6 is located inside the insulating sealing shell 5; the grounding-side arc extinguishing device further comprises a tubular earth electrode 7 made of nonmetal conductive material, one end of the tubular earth electrode 7 is internally embedded in the arc extinguishing chamber 10, the other end of the tubular earth electrode 7 is connected with the insulating sealing shell 5; the other end of the grounding-side fitting 2 is equipped with a connecting fine pipe 3; the grounding-side arc extinguishing device is inlaid in and connected with the connecting fine pipe 3 located on the grounding-side fitting 2 via a Z-shaped connecting fitting 4, the other end of the Z-shaped connecting fitting 4 is connected with the tubular earth electrode 7 via a connecting-line penetrating the thunder and lightning pulse acquisition device 11.

(10) On the base of the above configuration, furthermore, the grounding-side arc extinguishing device further comprises a L-shaped earth electrode 12 made of nonmetal conductive material, one end of the L-shaped earth electrode 12 is connected with the Z-shaped connecting fitting 4, the other end of L-shaped earth electrode 12 penetrates the thunder and lightning pulse acquisition device 11 and is connected with the tubular earth electrode 7.

(11) As illustrated in FIG. 3, each of the gas generating device 6 has four arc extinguishing gas projectiles, each of the arc extinguishing gas projectiles comprises arc extinguishing gas capsule and gas capsule insulating base 20; a trigger electrode 18 and a short circuit ring 22 are located at the arc extinguishing gas capsule; a fixed electrode 17 is located at a position of the gas capsule insulating base 20 corresponding to the trigger electrode 18, and the fixed electrode 17 is connected with an electrode of the thunder and lightning pulse acquisition device 11; the arc extinguishing gas capsule comprises a electricity and heat converting device 21 and a solid gas generating material device 19; the electricity and heat converting device 21 converts the electrical pulse transmitted from the thunder and lightning pulse acquisition device 11 into heat energy; the solid gas generating material device 19 generates a lot of gas on the condition of high temperature and high voltage; a front end of the gas generating device 6 comprises a digital mark.

(12) As illustrated in FIG. 2, the gas generating devices 6 of the grounding-side arc extinguishing device are arranged in a way of superposition in axial direction in the insulating sealing shell 5, and each of the gas generating devices 6 comprises an embed sheet iron 14 located inside the gas generating device 6; the insulating sealing shell 5 of the grounding-side arc extinguishing device comprises a high yield magnet 15 and a switch sheet metal 16 located inside the insulating sealing shell 5; when an electric power transmission line is struck by lightning for the first time, a first gas generating device 6-1 starts and does arc extinguishing, then automatically detaches from the grounding-side arc extinguishing device, a second gas generating device 6-2 falls into a previous position of the first gas generating device 6-1, a third gas generating device 6-3 falls into a previous position of the second gas generating device 6-2, the embed sheet iron 14 of the second gas generating device 6-2 is attracted by the high yield magnet 15, the trigger electrode 17 of the second gas generating device 6-2 connects with the electrode of the thunder and lightning pulse acquisition device 11 reliably, one action of the arc extinguishing triggered by lightning is finished. A right-angled groove 27 is defined on a position of the insulating sealing shell 5, which position is corresponding to the top left corner of the first gas generating device, and the groove 27 counteracts a recoil generated by the gas generating device 6 when the gas generating device 6 starts, makes the gas generating device drop down, detaches from the grounding-side arc extinguishing device, and the next gas generating device enters the position and state of ready, for finishing the automatic replacement among gas generating devices.

(13) An internal metal arcing ring 9 is located on a whiffing port of the arc extinguishing chamber 10, an outer ripple 8 is located outside the arc extinguishing chamber 10; the grounding-side fitting 2 connects with the circuit insulator string 1 by double nuts 26 as illustrated in FIG. 5; the tubular earth electrode 7, which is made of nonmetal conductive material, and the conducting wire-side fitting 13 collectively forms a protecting gap.

(14) The present no-freewheeling arc lightning protection gap protecting device has obvious advantages when compared to the prior parallel connection gap or line-arrester, with the protection of the device there is no freewheeling when the line operates normally, when the line is struck by the lightning and overvoltage occurs, the protecting device can start rapidly, weaken the lightning current and extinguish arc reliably at the same time, and the arc is extinguished before the electric power transmission line starts relay protection, so as to avoid trip-out, further to protect the power appliance effectively, improve the reliability of electricity support; it is repeated and the gas generating device can be charged for replacement; because of the arc lasts so short that there is no erosion on electrode material, it can operate long time.

Embodiment 2

(15) The difference between embodiment 2 and embodiment 1 shows following: the conducting wire-side fitting 13 connects with the circuit insulator string 1 by double nuts 26 (as illustrated in FIG. 5); the grounding-side fitting 2 connects with the circuit insulator string 1 by a common configuration.

Embodiment 3

(16) The difference between embodiment 3 and embodiment 1 and 2 shows following: the grounding-side fitting 2 and/or the conducting wire-side fitting 13 connect/connects with the circuit insulator string 1 by double nuts 26 (as illustrated in FIG. 5).

Embodiment 4

(17) The difference between embodiment 4 and the above embodiment shows following: a jut 28 is located at a surface at where a connecting sheet of the grounding-side fitting 2 contacts the circuit insulator string 1 (as illustrated in FIG. 6); the conducting wire-side fitting 13 connects with the circuit insulator string 1 by a common configuration.

Embodiment 5

(18) The difference between embodiment 5 and the above embodiment shows following: a jut 28 is located at a surface at where a connecting sheet of the conducting wire-side fitting 13 contacts the circuit insulator string 1 (as illustrated in FIG. 6); the grounding-side fitting 2 connects with the circuit insulator string 1 by a common configuration.

Embodiment 6

(19) The difference between embodiment 6 and the above embodiment shows following: juts 28 are located at a surface at where a connecting sheet of the grounding-side fitting 2 and the conducting wire-side fitting 13 contacts the circuit insulator string 1 (as illustrated in FIG. 6).

Embodiment 7

(20) The improvement can be made on any one of the embodiments selected from embodiment 1 to 6 (as illustrated in FIG. 4), a gas generating material pipe 23 is located on the grounding-side fitting 2, and the gas generating material pipe 23 is sleeved on an outer surface of the grounding-side fitting 2, a passive arc extinguishing gap 24 and a whiffing hole 25 are defined inside the gas generating material pipe 23.

(21) Besides the above embodiments, the connecting way of double nuts 26 configuration and the way that locates juts on connecting sheet can be mixed in use, the specific examples will not be given here.