Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates

Abstract

A method for measuring a dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates. An annular coplanar capacitance measuring head of a sensor unit consists of four quarter round metal plates and four quarter circular-ring-shaped metal plates, the eight metal plates are coplanar and concentric with one another, and a quarter round metal plate and a quarter circular-ring-shaped metal plate corresponding to the same sector angle form a capacitor. Two annular coplanar capacitance measuring heads are arranged on two round insulating substrates, the two round insulating substrates are used as two bottom surfaces of a cylindrical container, the cylindrical container is transversely arranged, and an insulating liquid equal to volume of the cylindrical container is injected into the cylindrical container in a sealing manner. Potential leads extract potentials of the sixteen metal plates and are connected to an input end of a capacitance measuring unit, and the capacitance measuring unit is connected to a dip measuring unit. When the cylindrical container tilts, the relative positions of the two annular coplanar capacitance measuring heads and the insulating liquid are changed, and a dip angle value can be calculated by measuring the change of a capacitance value. Also disclosed is a device for measuring a dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

Claims

1. A method for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates, wherein the method comprises the following steps: (1) one round metal plate and one outer circular-ring-shaped metal plate are placed coplanar and concentric with one another, and the round metal plate and the outer circular-ring-shaped metal plate are quartered in the radial direction respectively to obtain four quarter round metal plates and four quarter circular-ring-shaped metal plates, and a quarter round metal plate and a quarter circular-ring-shaped metal plate corresponding to the same sector angle forms a capacitor, an annular coplanar capacitance measuring head is obtained by combining the four quarter round metal plates and four quarter circular-ring-shaped metal plates; (2) the two annular coplanar capacitance measuring heads as described above are vertically immerged into the insulating liquid, with the two annular coplanar capacitance measuring heads being placed coaxially and oppositely and a quarter round metal plate and a quarter circular-ring-shaped metal plate of the two annular coplanar capacitance measuring heads being both crossly distributed, and the liquid surface of the insulating liquid passes through the center of the two annular coplanar capacitance measuring heads, and the capacitance value of the capacitor formed by a quarter round metal plate and a quarter circular-ring-shaped metal plate corresponding to the same sector angle is codetermined by the dielectric constant of air, the dielectric constant of the insulating liquid, a corresponding sector angle of a portion of respective polar plate that is exposed to the air, and a corresponding sector angle of a portion of the respective polar plate that is immerged in the insulating liquid; (3) when the above two annular coplanar capacitance measuring heads rotate circumferentially around the center, its dip angle changes and the liquid surface of the insulating liquid maintains horizontal, and the relative positions of the two annular coplanar capacitance measuring heads and the insulating liquid change, and a corresponding section angle of a portion of the respective polar plate that is exposed to the air and a corresponding sector angle of a portion of the respective polar plate that is immerged in the insulating liquid change, and a dip angle value is calculated by measuring changes of the capacitance values of the capacitor formed by a quarter round metal plate and a quarter circular-ring-shaped metal plate corresponding to the same sector angle; (4) the two annular coplanar capacitance measuring heads rotate circumferentially around the center, and when the liquid surface of the insulating liquid is near to the radial dividing line of any one of the annular coplanar capacitance measuring heads, the calculated result obtained by another annular coplanar capacitance measuring head is taken as the final calculated value of the dip angle.

2. A device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates, comprising a capacitance measuring unit and a dip angle calculating unit that are connected to each other, wherein the device further comprising a sensor unit, wherein the sensor unit is configured as follows: two round insulating substrates are mounted in a sealing manner respectively on the two opening ends of a cylindrical container with two opening-shaped ends, and two annular coplanar capacitance measuring heads are mounted respectively on the inner sides of the two round insulating substrates in the chamber of the cylindrical container; wherein the annular coplanar capacitance measuring head consists of four quarter round metal plates and four quarter circular-ring-shaped metal plates, wherein the four quarter circular-ring-shaped metal plates are configured on the outer sides of the four quarter round metal plates, and the four quarter circular-ring-shaped metal plates are coplanar and concentric with the four quarter round metal plates, and the four quarter circular-ring-shaped metal plates are evenly and circumferentially distributed and correspond to the four quarter round metal plates respectively; wherein the annular coplanar capacitance measuring head consists of four quarter round metal plates and four quarter circular-ring-shaped metal plates, wherein the four quarter circular-ring-shaped metal plates are configured on the outer sides of the four quarter round metal plates, the four quarter circular-ring-shaped metal plates are coplanar and concentric with the four quarter round metal plates, and the four quarter circular-ring-shaped metal plates are evenly and circumferentially distributed and correspond to the four quarter round metal plates respectively, wherein the four quarter round metal plates of the annular coplanar capacitance measuring head and the four quarter round metal plates of the annular coplanar capacitance measuring head are crossly distributed, and the four quarter circular-ring-shaped metal plates of the annular coplanar capacitance measuring head and the four quarter circular-ring-shaped metal plates, of the annular coplanar capacitance measuring head are crossly distributed, wherein the four quarter round metal plates, the four quarter circular-ring-shaped metal plates, the four quarter round metal plates, and the four quarter circular-ring-shaped metal plates are connected to an input end of the capacitance measuring unit via sixteen potential leads, subsequently and respectively; wherein the cylindrical container is transversely arranged, and an insulating liquid equal to volume of the cylindrical container is injected into the cylindrical container in a sealing manner.

3. The device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates according to claim 2, wherein the round insulating substrates are made of a resin glass fiber material.

4. The device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates according to claim 2, wherein the insulating liquid is a liquid of combing one or more components of alcohols including methanol, ethanol, isopropanol, ketones including acetone, butanone, and ethers including diethylene glycol monobutylether.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is the outline perspective view of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(2) FIG. 2 is the schematic diagram of the annular coplanar capacitance measuring head 1 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(3) FIG. 3 is the schematic diagram of the annular coplanar capacitance measuring head 11 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(4) FIG. 4 is the front view of the annular coplanar capacitance measuring head 1 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(5) FIG. 5 is the front view of the annular coplanar capacitance measuring head 11 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(6) FIG. 6 is a view illustrating the annular coplanar capacitance measuring head 1 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates when it tilts.

(7) FIG. 7 is a view illustrating the annular coplanar capacitance measuring head 11 of sensor unit of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates when it tilts.

(8) FIG. 8 is the schematic diagram of overall structure of the device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

(9) Reference numerals in the drawing are explained as follows: 1. annular coplanar capacitance measuring head, 2. quarter round metal plate, 3. quarter round metal plate, 4. quarter round metal plate, 5. quarter round metal plate, 6. quarter circular-ring-shaped metal plate, 7. quarter circular-ring-shaped metal plate, 8. quarter circular-ring-shaped metal plate, 9. quarter circular-ring-shaped metal plate, 10. round insulating substrate, 11. annular coplanar capacitance measuring head, 12. quarter round metal plate, 13. quarter round metal plate, 14. quarter round metal plate, 15. quarter round metal plate, 16. quarter circular-ring-shaped metal plate, 17. quarter circular-ring-shaped metal plate, 18. quarter circular-ring-shaped metal plate, 19. quarter circular-ring-shaped metal plate, 20. round insulating substrate, 21. cylindrical container, 22. insulating liquid, 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38 potential leads, 39. sensor unit, 40. capacitance measuring unit, 41. dip angle calculating unit.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(10) The embodiments of this invention are described as follows in detail in combination with the drawings.

(11) A device for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates comprises a sensor unit 39, a capacitance measuring unit 40 and a dip angle calculating unit 41, with the schematic diagram of overall structure of device for measuring dip angle as shown in FIG. 8.

(12) FIG. 1 is the outline perspective view of sensor unit of the device for measuring dip angle. The sensor unit 27 is configured as follows: two round insulating substrates 10, 20 are mounted in a sealing manner respectively on the two opening ends of the cylindrical container 21 with two opening-shaped ends, and two annular coplanar capacitance measuring heads 1, 11 are respectively mounted on the inner sides of the two round insulating substrates 10, 20 in the chamber of cylindrical container 21; the annular coplanar capacitance measuring head 1 consists of four quarter round metal plates 2, 3, 4, 5 and four quarter circular-ring-shaped metal plates 6, 7, 8, 9, wherein the four quarter circular-ring-shaped metal plates 6, 7, 8, 9 are configured on the outer sides of the four quarter round metal plates 2, 3, 4, 5, and the four quarter circular-ring-shaped metal plates 6, 7, 8, 9 are coplanar and concentric with the four quarter round metal plates 2, 3, 4, 5, and four quarter circular-ring-shaped metal plates 6, 7, 8, 9 are evenly and circumferentially distributed and correspond to the four quarter round metal plates 2, 3, 4, 5 respectively; the annular coplanar capacitance measuring head 11 consists of four quarter round metal plates 12, 13, 14, 15 and four quarter circular-ring-shaped metal plates 16, 17, 18, 19, wherein the four quarter circular-ring-shaped metal plates 16, 17, 18, 19 are configured on the outer sides of the four quarter round metal plates 12, 13, 14, 15, and the four quarter circular-ring-shaped metal plates 16, 17, 18, 19 are coplanar and concentric with the four quarter round metal plates 12, 13, 14, 15, and four quarter circular-ring-shaped metal plates 16, 17, 18, 19 are evenly and circumferentially distributed and correspond to the four quarter round metal plates 12, 13, 14, 15 respectively; the four quarter round metal plates 2, 3, 4, 5 of the annular coplanar capacitance measuring head 1 and the four quarter round metal plates 12, 13, 14, 15 of the annular coplanar capacitance measuring head 11 are crossly distributed, and the four quarter circular-ring-shaped metal plates 6, 7, 8, 9 of the annular coplanar capacitance measuring head 1 and the four quarter circular-ring-shaped metal plates 16, 17, 18, 19 of the annular coplanar capacitance measuring head 11 are crossly distributed; sixteen potential leads 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 connect the four quarter round metal plates 2, 3, 4, 5, the four quarter circular-ring-shaped metal plates 6, 7, 8, 9, the four quarter round metal plates 12, 13, 14, 15 and the four quarter circular-ring-shaped metal plates 16, 17, 18, 19 to an input end of the capacitance measuring unit 39, subsequently and respectively; the cylindrical container 21 is transversely arranged, and insulating liquid 22 equal to volume of the cylindrical container 21 is injected into the cylindrical container 21 in a sealing manner.

(13) The round insulating substrates 10, 20 are made of a resin glass fiber material.

(14) The insulating liquid 22 is a liquid of combing one or more components of alcohols such as methanol, ethanol, isopropanol, ketones such as acetone, butanone, and ethers such as diethylene glycol monobutylether.

(15) A method for measuring dip angle by way of oppositely crossly placed paired quartered ring-quartered circle nested polar plates comprises the following steps:

(16) (1) One round metal plate and one outer circular-ring-shaped metal plate are placed to keep coplanar and concentric with one another, and four quarter circular-ring-shaped metal plates are obtained by dividing the outer circular-ring-shaped metal plate into four quarters in the radial direction. Each quarter circular-ring-shaped metal plate forms a capacitor with the round metal plate respectively, and said one round metal plate is combined with the four quarter circular-ring-shaped metal plates to obtain the annular coplanar capacitance measuring head.

(17) With reference to FIGS. 2 and 3, the power lines between the metal plates of the annular coplanar capacitance measuring heads 1 and 11 are distributed evenly along the metal plate, and can be approximately replaced with semicircle arc lines. In accordance with the formula of computing a single coplanar capacitance, it can be known that the annular coplanar capacitance is directly proportional to the dielectric constant of the dielectrics. It can be expressed as follows.
C=K.Math.

(18) (2) The above two annular coplanar capacitance measuring heads are vertically immersed into the insulating liquid, with two annular coplanar capacitance measuring heads being placed coaxially oppositely and the quarter circular-ring-shaped metal plates of the two annular coplanar capacitance measuring heads being crossly distributed. The liquid surface of the insulating fluid passes through the center of the two annular coplanar capacitance measuring heads and the capacitance value of the capacitor formed by each quarter circular-ring-shaped metal plate and the round metal plate is codetermined by the dielectric constant of air, the dielectric constant of the insulating liquid, the corresponding sector angle of the portion of the respective polar plate that is exposed to the air, and the corresponding sector angle of the portion of the respective polar plate that is immersed in the insulating liquid.

(19) FIG. 4 is the front view of the annular coplanar capacitance measuring head 1 of sensor unit of the device for measuring dip angle. The capacitance formed by metal plates 2 and 6, the capacitance formed by metal plates 3 and 7, the capacitance formed by metal plates 4, 8 and the capacitance formed by metal plates 5 and 9 are represented respectively by the following formulas.

(20) $C_{26}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}$$C_{37}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}$$C_{48}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{59}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$

(21) FIG. 5 is the front view of the annular coplanar capacitance measuring head 11 of sensor unit of the device for measuring dip angle. The capacitance formed by metal plates 12 and 16, the capacitance formed by metal plates 13 and 17, the capacitance formed by metal plates 14 and 18 and the capacitance formed by metal plates 15 and 19 can be represented respectively by the following formulas.

(22) $C_{1216}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}$$C_{1317}=K.Math.\frac{45}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}+K.Math.\frac{45}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{1418}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{1519}=K.Math.\frac{45}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}+K.Math.\frac{45}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$

(23) (3) When the above two annular coplanar capacitance measuring heads rotate circumferentially around the centre, the dip angle changes and the liquid surface of the insulating liquid remains horizontal, and the relative positions of the two annular coplanar capacitance measuring heads and the insulating liquid change, and the corresponding sector angle of the portion of each polar plate that is exposed to the air and the corresponding sector angle of the portion of each polar plate that is immerged in the insulating liquid changes.

(24) FIG. 6 shows a view illustrating the annular coplanar capacitance measuring head 1 when tilting. At this time the capacitance formed by metal plates 2 and 6, the capacitance formed by metal plates 3 and 7, the capacitance formed by metal plates 4 and 8, and the capacitance formed by metal plates 5 and 9 are respectively shown as follows.

(25) $C_{26}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}$$C_{37}=K.Math.\frac{90-}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}+K.Math.\frac{}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{48}=K.Math.\frac{90}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{59}=K.Math.\frac{90-}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}+K.Math.\frac{}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}$

(26) Combining the above formulas by applying subtraction, it can be obtained:

(27) $C_{48}-C_{26}=K.Math.\frac{90}{360}\left({\mathrm{.Math.}}_{\mathrm{liquid}}-{\mathrm{.Math.}}_{\mathrm{air}}\right)$$C_{59}-C_{37}=K.Math.\frac{90-2}{360}\left({\mathrm{.Math.}}_{\mathrm{liquid}}-{\mathrm{.Math.}}_{\mathrm{air}}\right)$

(28) Thereby, the dip angle is solved by using the calculating formula as:

(29) $=45\left(1-\frac{C_{59}-C_{37}}{C_{48}-C_{26}}\right)$

(30) FIG. 7 shows a view illustrating the annular coplanar capacitance measuring head 11 tilting. At this time the capacitance formed by metal plates 12 and 16, the capacitance formed by metal plates 13 and 17, the capacitance formed by metal plates 14 and 18 and the capacitance formed by metal plates 15 and 19 are respectively shown below.

(31) $C_{1216}=K.Math.\frac{90}{360}{\mathrm{.Math.}}_{\mathrm{air}}$$C_{1317}=K.Math.\frac{45-}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}+K.Math.\frac{45+}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{1418}=K.Math.\frac{90}{360}{\mathrm{.Math.}}_{\mathrm{liquid}}$$C_{1519}=K.Math.\frac{45+}{360}.Math.{\mathrm{.Math.}}_{\mathrm{air}}+K.Math.\frac{45-}{360}.Math.{\mathrm{.Math.}}_{\mathrm{liquid}}$

(32) Combining the above formulas by applying subtraction, it can be obtained:

(33) $C_{1418}-C_{1216}=K.Math.\frac{90}{360}\left({\mathrm{.Math.}}_{\mathrm{liquid}}-{\mathrm{.Math.}}_{\mathrm{air}}\right)$$C_{1519}-C_{1317}=K.Math.\frac{-2}{360}\left({\mathrm{.Math.}}_{\mathrm{liquid}}-{\mathrm{.Math.}}_{\mathrm{air}}\right)$

(34) Thereby, the dip angle is solved by using the calculating formula as:

(35) $=-45\frac{C_{1519}-C_{1317}}{C_{1418}-C_{1216}}$

(36) The dip angle output can be obtained by comparison processing of the obtained signals via the capacitance measuring unit and dip angle calculating unit.

(37) (4) The above two annular coplanar capacitance measuring heads rotate circumferentially around the centre, and when the liquid surface of the insulating liquid is adjacent to the radial dividing line of any one of the annular coplanar capacitance measuring heads, the calculated result obtained by another annular coplanar capacitance measuring head is taken as the final calculated result of the dip angle.

(38) When the dip angle is about 45 and 135, the liquid surface of the insulating liquid is adjacent to the radial dividing line of the annular coplanar capacitance measuring head 11. At this moment, the annular coplanar capacitance measuring head 1 is taken as the input of the capacitance measuring unit, which can improve the sensitivity of the device for measuring a dip angle to make the measured result more accurate. Similarly, when the dip angle is about 0 and 90, the liquid surface of the insulating liquid is adjacent to the radial dividing line of the annular coplanar capacitance measuring head 1. At this moment, the annular coplanar capacitance measuring head 11 is taken as the input of the capacitance measuring unit, and the same effect can be achieved.