TOWER PACKER FOR PACKING CEMENT SLURRY OF JACKET

Abstract

A tower packer for packing cement slurry of a jacket is disposed between a steel pile and an inner sleeve. It includes a supporting ring, sealing rings and a limiting ring. The supporting ring and the limiting ring are respectively installed on an outer surface of the inner sleeve in the steel pile. A plurality of sealing rings stacked from top to bottom along the sleeving direction of the inner sleeve are arranged between the supporting ring and the limiting ring. Each sealing ring is hermetically and slidably connected along a radial direction. The sealing ring at the bottom is always supported by the supporting ring. The sealing ring at the top abuts a lower surface of the limiting ring. When the inner sleeve is sleeved into the steel pile, the outer surface of the sealing ring with maximum outer diameter hermetically abuts the inner surface of the steel pile.

Claims

1. A tower packer for packing cement slurry of a jacket, which is located between a steel pile and an inner sleeve, characterized in that the tower packer (1) comprises a supporting ring (4), sealing rings (5) and a limiting ring (7), wherein the supporting ring (4) and the limiting ring (7) are respectively installed on an outer surface of the inner sleeve (2) in the steel pile (3); a plurality of sealing rings (5) stacked from top to bottom along the sleeving direction of the inner sleeve (2) are arranged between the supporting ring (4) and the limiting ring (7); each of the sealing rings (5) is hermetically and slidably connected along a radial direction; the sealing ring (5) at the bottom is always supported by the supporting ring (4); the sealing ring (5) at the top is always abutted against a lower surface of the limiting ring (7); in the process that the inner sleeve (2) is sleeved into the steel pile (3), the outer surface of the sealing ring (9) with maximum outer diameter is hermetically abutted against the inner surface of the steel pile (3), and the other sealing rings (5) slide respectively to adapt along the radial direction as a distance between the outer surface of the inner sleeve (2) and the inner surface of the steel pile (3) is changed in the falling process of sleeving of the inner sleeve (2).

2. The tower packer for packing cement slurry of the jacket according to claim 1, characterized in that the number of the sealing rings (5) is an odd number greater than 1, and the sealing rings are symmetrically arranged on an upper and a lower sides of the sealing ring (9) with the maximum outer diameter.

3. The tower packer for packing cement slurry of the jacket according to claim 1, characterized in that the number of the sealing rings (5) is an even number greater than 2; two sealing rings (9) have the maximum outer diameter; and the other sealing rings (5) are symmetrically arranged on the upper and the lower sides of the two sealing rings (9) with the maximum outer diameter.

4. The tower packer for packing cement slurry of the jacket according to claim 1, characterized in that the number of the sealing rings (5) is an even number greater than 2; one sealing ring (9) has the maximum outer diameter; and the other sealing rings (5) are respectively arranged on the upper and the lower sides of the sealing ring (9) with the maximum outer diameter.

5. The tower packer for packing cement slurry of the jacket according to claim 2, characterized in that the widths of the sealing rings (5) are equal; and the inner diameter of the sealing ring (9) with the maximum outer diameter and the inner diameters of the other sealing rings (5) on the upper or lower side are successively reduced in the form of arithmetic progression.

6. A tower packer for packing cement slurry of a jacket, which is located between an outer sleeve and a steel pile, characterized in that the tower packer (1) comprises a supporting ring (4), sealing rings (5) and a limiting ring (7), wherein the supporting ring (4) and the limiting ring (7) are respectively installed on an inner surface of the outer sleeve (11); a plurality of sealing rings (5) stacked from top to bottom along the penetration direction of the steel pile (3) are arranged between the supporting ring (4) and the limiting ring (7); each of the sealing rings (5) is hermetically and slidably connected along a radial direction; the sealing ring (5) at the bottom is always supported by the supporting ring (4); the sealing ring (5) at the top is always abutted against a lower surface of the limiting ring (7); in the process that the steel pile (3) penetrates into the outer sleeve (11), the inner surface of the sealing ring (10) with minimum outer diameter is hermetically abutted against the outer surface of the steel pile (3), and the other sealing rings (5) slide respectively to adapt along the radial direction as a distance between the outer surface of the steel pile (3) and the inner surface of the outer sleeve (11) is changed in the falling process of penetration of the steel pile (3).

7. The tower packer for packing cement slurry of the jacket according to claim 6, characterized in that the number of the sealing rings (5) is an odd number greater than 1, and the sealing rings are symmetrically arranged on an upper and a lower sides of the sealing ring (10) with the minimum outer diameter.

8. The tower packer for packing cement slurry of the jacket according to claim 6, characterized in that the number of the sealing rings (5) is an odd number greater than 1, and the sealing rings are symmetrically arranged on an upper and a lower sides of the sealing ring (10) with the minimum outer diameter.

9. The tower packer for packing cement slurry of the jacket according to claim 6, characterized in that the number of the sealing rings (5) is an even number greater than 2; one sealing ring (10) has the minimum outer diameter; and the other sealing rings (5) are respectively arranged on the upper and the lower sides of the sealing ring (10) with the minimum outer diameter.

10. The tower packer for packing cement slurry of the jacket according to claim 7, characterized in that the widths of the sealing rings (5) are equal; and the inner diameter of the sealing ring (10) with the minimum outer diameter and the inner diameters of the other sealing rings (5) on the upper or lower side are successively increased in the form of arithmetic progression.

11. The tower packer for packing cement slurry of the jacket according to claim 1, characterized in that the maximum value of the width of each sealing ring (5), the maximum value of the width of the supporting ring (4) and the maximum value of the width of the limiting ring (7) are equal to a minimum distance value between the sleeve and the steel pile.

12. The tower packer for packing cement slurry of the jacket according to claim 1, characterized in that an annular waterproof skin (8) is arranged above each sealing ring (5); the outer edge of the waterproof skin (8) is hermetically connected to the inner surface of the limiting ring (7); the inner edge of the waterproof skin (8) is hermetically connected to the sealing ring (9) with the maximum outer diameter or hermetically connected to the sealing ring (10) with the minimum outer diameter.

13. The tower packer for packing cement slurry of the jacket according to claim 6, characterized in that the maximum value of the width of each sealing ring (5), the maximum value of the width of the supporting ring (4) and the maximum value of the width of the limiting ring (7) are equal to a minimum distance value between the sleeve and the steel pile.

14. The tower packer for packing cement slurry of the jacket according to claim 6, characterized in that an annular waterproof skin (8) is arranged above each sealing ring (5); the outer edge of the waterproof skin (8) is hermetically connected to the inner surface of the limiting ring (7); the inner edge of the waterproof skin (8) is hermetically connected to the sealing ring (9) with the maximum outer diameter or hermetically connected to the sealing ring (10) with the minimum outer diameter.

Description

DESCRIPTION OF DRAWINGS

[0023] FIG. 1 is an operating state diagram of the present invention in a state of normal pile in a first piling construction environment of a jacket;

[0024] FIG. 2 is an operating state diagram of the present invention in a state of deviated pile in a first piling construction environment of a jacket;

[0025] FIG. 3 is a structural sectional view of a structure of the present invention in a first piling construction environment of a jacket;

[0026] FIG. 4 is a structural sectional view of another structure of the present invention in a first piling construction environment of a jacket;

[0027] FIG. 5 is a structural sectional view of still another structure of the present invention in a first piling construction environment of a jacket;

[0028] FIG. 6 is an operating state diagram of the present invention in a state of normal pile in a post piling construction environment of a jacket;

[0029] FIG. 7 is an operating state diagram of the present invention in a state of deviated pile in a post piling construction environment of a jacket;

[0030] FIG. 8 is a structural sectional view of a structure of the present invention in a post piling construction environment of a jacket;

[0031] FIG. 8 is a structural sectional view of another structure of the present invention in a post piling construction environment of a jacket; and

[0032] FIG. 10 is a structural sectional view of still another structure of the present invention in a post piling construction environment of a jacket.

[0033] In the figures: 1 tower packer; 2 inner sleeve; 3 steel pile; 4 supporting ring; 5 sealing ring; 6 sealing ring; 7 limiting ring; 8 waterproof skin; 9 sealing ring with maximum outer diameter; 10 sealing ring with minimum outer diameter; 11 outer sleeve; and 12 positioning tapered guide plate.

DETAILED DESCRIPTION

[0034] The present invention is further detailed below in combination with the drawings.

Embodiment 1 (First Piling Operation)

[0035] As shown in FIG. 1 to FIG. 3, a tower packer 1 of the present embodiment is located between a steel pile 3 and an inner sleeve 2. In the present embodiment, the piling operation construction is performed at first, that is, the steel pile 3 is fixed at first, and then the inner sleeve 2 is sleeved in the steel pile 3. The tower packer 1 comprises a supporting ring 4, sealing rings 5 and a limiting ring 7, wherein the supporting ring 4 and the limiting ring 7 are respectively fixed on an outer surface of the inner sleeve 2; the limiting ring 7 is located above the supporting ring 4; a plurality of sealing rings 5 stacked from top to bottom along the sleeving direction of the inner sleeve 2 are arranged between the supporting ring 4 and the limiting ring 7; each of the sealing rings 5 is sleeved on the inner sleeve 2 and is collinear with an axial centerline of the inner sleeve 2; each of the sealing rings 5 is hermetically and slidably connected along a radial direction; the sealing ring 5 at the bottom is always supported by the supporting ring 4; and the sealing ring 5 at the top is always abutted against a lower surface of the limiting ring 7. In the process that the inner sleeve 2 is sleeved into the steel pile 3, the outer surface of the sealing ring 9 with maximum outer diameter is hermetically abutted against the inner surface of the steel pile 3, and the other sealing rings 5 slide respectively to adapt along the radial direction as a distance between the outer surface of the inner sleeve 2 and the inner surface of the steel pile 3 is changed in the falling process of sleeving of the inner sleeve 2. In the process that each sealing ring 5 slides along the radial direction, adjacent sealing rings 5 are always partially overlapped. In order to facilitate the installation of the inner sleeve 2, a positioning tapered guide plate 12 is arranged at the lower end of the inner sleeve 2, and the positioning tapered guide plate 12 is located below the tower packer 1.

[0036] In the present embodiment, the number of the sealing rings 5 is an odd number greater than 1, and the sealing rings are symmetrically arranged on an upper and a lower sides of the sealing ring 9 with the maximum outer diameter. The widths of the sealing rings 5 are equal; and the inner diameter of the sealing ring 9 with the maximum outer diameter and the inner diameters of the other sealing rings 5 on the upper or lower side are successively reduced in the form of arithmetic progression. The maximum value of the width of each sealing ring 5, the maximum value of the width of the supporting ring 4 and the maximum value of the width of the limiting ring 7 are equal to a minimum distance value between the outer surface of the inner sleeve 2 and the inner surface of the steel pile 3. Specifically, in the present embodiment, seven sealing rings 5 are arranged, wherein the sealing ring 9 with the maximum outer diameter is located in the middle, and three sealing rings 5 are respectively arranged on the upper and the lower sides. In the present embodiment, the inner diameter of the steel pile 3 is φ2290 mm; the outer diameter of the inner sleeve 2 is φ1900 mm; the heights of the steel pile 3 and the inner sleeve 2 are 600 mm; each sealing ring 5 has a width of 80 mm and a height of 15 mm; the inner diameter of the sealing ring 9 with the maximum outer diameter is φ2140 mm; and by taking three sealing rings 5 on one side as an example, the inner diameters are successively φ2070 mm, φ2000 mm, and φ1930 mm. The material of the sealing rings 5 is rigid, such as iron or glass steel. A rubber sealing ring 6 is arranged on the outer surface of the sealing ring 9 with the maximum outer diameter. In the falling process of the inner sleeve 3, the sealing ring 6 is always hermetically abutted against the inner surface of the steel pile 3.

[0037] An annular waterproof skin 8 is arranged above each sealing ring 5. The inner edge of the waterproof skin 8 is hermetically connected to the outer surface of the limiting ring 7. The outer edge of the waterproof skin 8 is hermetically connected to the sealing ring 9 with the maximum outer diameter.

[0038] In the falling process of sleeving of the inner sleeve 2, in a state of normal pile shown in FIG. 1 (i.e., the inner sleeve 2 is collinear with the axial centerline of the steel pile 3), the sealing ring 6 arranged on the outer surface of the sealing ring 9 with the maximum outer diameter is always hermetically abutted against the inner surface of the steel pile 3; and the annular space between the inner sleeve 2 and the steel pile 3 is blocked to ensure that the cement slurry in the annular space may not flow out and simultaneously prevent the seabed sludge on the lower part of the tower packer 1 from polluting the upper cement slurry. In a state of deviated pile shown in FIG. 2 (i.e., the inner sleeve 2 is not collinear with the axial centerline of the steel pile 3), in the falling process of sleeving of the inner sleeve 2, except the sealing ring 9 with the maximum outer diameter, the outer surfaces of the other sealing rings 5 come into contact with the inner surface of the steel pile 3 and then slide along the radial direction to adapt to the change of the distance between the inner sleeve 2 and the steel pile 3.

Embodiment 2 (First Piling Operation)

[0039] As shown in FIG. 1, FIG. 2 and FIG. 4, the differences between the present embodiment and embodiment 1 are: the number of the sealing rings 5 in the present embodiment is an even number greater than 2; two sealing rings 9 have the maximum outer diameter; and the other sealing rings 5 are symmetrically arranged on the upper and the lower sides of the two sealing rings 9 with the maximum outer diameter. Specifically, in the present embodiment, eight sealing rings 5 are arranged, wherein the two sealing rings 9 with the maximum outer diameter are stacked up and down and located in the middle, and three sealing rings 5 are respectively arranged on the upper and the lower sides. Others are the same as those in the embodiment 1.

Embodiment 3 (First Piling Operation)

[0040] As shown in FIG. 1, FIG. 2 and FIG. 5, the differences between the present embodiment and embodiment 1 are: the number of the sealing rings 5 in the present embodiment is an even number greater than 2; one sealing ring 9 has the maximum outer diameter; and the other sealing rings 5 are respectively arranged on the upper and the lower sides of the sealing ring 9 with the maximum outer diameter. Specifically, in the present embodiment, six sealing rings are arranged, wherein three sealing rings 5 are arranged above the sealing ring 9 with the maximum outer diameter, and two sealing rings 5 are arranged below the sealing ring 9 with the maximum outer diameter. Because only two sealing rings 5 are arranged on the lower part, the width of the supporting ring 4 in the present embodiment is increased to ensure that the lowermost sealing ring 5 is always supported by the supporting ring 4, i.e., always partially overlapped with the supporting ring; and the width of the supporting ring 4 may not cause sticking of the pile. Others are the same as those in the embodiment 1.

Embodiment 4 (Post Piling Operation)

[0041] As shown in FIG. 6 to FIG. 8, a tower packer 1 of the present embodiment is located between an outer sleeve 11 and a steel pile 3. In the present embodiment, the piling operation construction is performed later, that is, a jacket is firstly put in place at sea, and then is fixed after the steel pile 3 penetrates through the outer sleeve 11 on the jacket. The tower packer 1 comprises a supporting ring 4, sealing rings 5 and a limiting ring 7, wherein the supporting ring 4 and the limiting ring 7 are respectively fixed on an inner surface of the outer sleeve 11; the limiting ring 7 is located above the supporting ring 4; a plurality of sealing rings 5 stacked from top to bottom along the penetration direction of the steel pile 3 are arranged between the supporting ring 4 and the limiting ring 7; each of the sealing rings 5 is sleeved on the steel pile 3 and is collinear with an axial centerline of the steel pile 3; each of the sealing rings 5 is hermetically and slidably connected along a radial direction; the sealing ring 5 at the bottom is always supported by the supporting ring 4; and the sealing ring 5 at the top is always abutted against a lower surface of the limiting ring 7. In the process that the steel pile 3 penetrates into the outer sleeve 11, the inner surface of the sealing ring 10 with minimum outer diameter is hermetically abutted against the outer surface of the steel pile 3, and the other sealing rings 5 slide respectively to adapt along the radial direction as a distance between the outer surface of the steel pile 3 and the inner surface of the outer sleeve 11 is changed in the falling process of penetration of the steel pile 3. In the process that each sealing ring 5 slides along the radial direction, adjacent sealing rings 5 are always partially overlapped.

[0042] In the present embodiment, the number of the sealing rings 5 is an odd number greater than 1, and the sealing rings are symmetrically arranged on an upper and a lower sides of the sealing ring 10 with the minimum outer diameter. The widths of the sealing rings 5 are equal; and the inner diameter of the sealing ring 10 with the minimum outer diameter and the inner diameters of the other sealing rings 5 on the upper or lower side are successively increased in the form of arithmetic progression. The maximum value of the width of each sealing ring 5, the maximum value of the width of the supporting ring 4 and the maximum value of the width of the limiting ring 7 are equal to a minimum distance value between the inner surface of the outer sleeve 11 and the outer surface of the steel pile 3. Specifically, in the present embodiment, seven sealing rings 5 are arranged, wherein the sealing ring 10 with the minimum outer diameter is located in the middle, and three sealing rings 5 are respectively arranged on the upper and the lower sides. In the present embodiment, the inner diameter of the outer sleeve 11 is φ2290 mm; the outer diameter of the steel pile 3 is φ1900 mm; the heights of the steel pile 3 and the outer sleeve 11 are 600 mm; each sealing ring 5 has a width of 80 mm and a height of 15 mm; the inner diameter of the sealing ring 10 with the minimum outer diameter is φ1930 mm; and by taking three sealing rings 5 on one side as an example, the inner diameters are successively φ2000 mm, φ2070 mm, and φ2140 mm. The material of the sealing rings 5 is rigid, such as iron or glass steel. A rubber sealing ring 6 is arranged on the inner surface of the sealing ring 10 with the minimum outer diameter. In the falling process of penetration of the steel pile 3, the sealing ring 6 is always hermetically abutted against the outer surface of the steel pile 3.

[0043] An annular waterproof skin 8 is arranged above each sealing ring 5. The outer edge of the waterproof skin 8 is hermetically connected to the inner surface of the limiting ring 7. The inner edge of the waterproof skin 8 is hermetically connected to the sealing ring 10 with the minimum outer diameter.

[0044] In the falling process of penetration of the steel pile 3, in a state of normal pile shown in FIG. 6 (i.e., the outer sleeve 11 is collinear with the axial centerline of the steel pile 3), the sealing ring 6 arranged on the outer surface of the sealing ring 10 with the minimum outer diameter is always hermetically abutted against the outer surface of the steel pile 3; and the annular space between the outer sleeve 11 and the steel pile 3 is blocked to ensure that the cement slurry in the annular space may not flow out and simultaneously prevent the seabed sludge on the lower part of the tower packer 1 from polluting the upper cement slurry. In a state of deviated pile shown in FIG. 2 (i.e., the outer sleeve 11 is not collinear with the axial centerline of the steel pile 3), in the falling process of penetration of the steel pile 3, except the sealing ring 10 with the minimum outer diameter, the outer surfaces of the other sealing rings 5 come into contact with the outer surface of the steel pile 3 and then slide along the radial direction to adapt to the change of the distance between the outer sleeve 11 and the steel pile 3.

Embodiment 5 (Post Piling Operation)

[0045] As shown in FIG. 6, FIG. 7 and FIG. 9, the differences between the present embodiment and embodiment 4 are: the number of the sealing rings 5 in the present embodiment is an even number greater than 2; two sealing rings 10 have the minimum outer diameter; and the other sealing rings 5 are symmetrically arranged on the upper and the lower sides of the two sealing rings 10 with the minimum outer diameter. Specifically, in the present embodiment, eight sealing rings 5 are arranged, wherein the two sealing rings 10 with the minimum outer diameter are stacked up and down and located in the middle, and three sealing rings 5 are respectively arranged on the upper and the lower sides. Others are the same as those in the embodiment 4.

Embodiment 6 (Post Piling Operation)

[0046] As shown in FIG. 6, FIG. 7 and FIG. 10, the differences between the present embodiment and embodiment 4 are: the number of the sealing rings 5 in the present embodiment is an even number greater than 2; one sealing ring 10 has the minimum outer diameter; and the other sealing rings 5 are respectively arranged on the upper and the lower sides of the sealing ring 10 with the minimum outer diameter. Specifically, in the present embodiment, six sealing rings are arranged, wherein three sealing rings 5 are arranged above the sealing ring 10 with the minimum outer diameter, and two sealing rings 5 are arranged below the sealing ring 10 with the minimum outer diameter. Because only two sealing rings 5 are arranged on the lower part, the width of the supporting ring 4 in the present embodiment is increased to ensure that the lowermost sealing ring 5 is always supported by the supporting ring 4, i.e., always partially overlapped with the supporting ring; and the width of the supporting ring 4 may not cause sticking of the pile. Others are the same as those in the embodiment 4.

[0047] The present invention can be applicable to two operating modes for the construction of fixed jackets in marine engineering, can overcome the defects of the prior art, and can improve the sealing capability and anti-destructive capability of the packer.