CN216746554U - Connection structure of Christmas tree and pressure transmitter - Google Patents
Connection structure of Christmas tree and pressure transmitter Download PDFInfo
- Publication number
- CN216746554U CN216746554U CN202220237998.7U CN202220237998U CN216746554U CN 216746554 U CN216746554 U CN 216746554U CN 202220237998 U CN202220237998 U CN 202220237998U CN 216746554 U CN216746554 U CN 216746554U
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- Prior art keywords
- sleeve
- diaphragm
- lead
- christmas tree
- pressure
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- 241000191291 Abies alba Species 0.000 title claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 239000004677 Nylon Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to the technical field of pressure transmitter corollary equipment, in particular to a connection structure of a Christmas tree and a pressure transmitter, which comprises an outer sleeve, a lead sleeve and a diaphragm sleeve; the connecting end of the outer sleeve is connected with the tail end of the Christmas tree, the pressure relief end of the outer sleeve is connected with a pressure relief plug in a threaded manner, and the outer sleeve is provided with a mounting hole for mounting a lead sleeve; one end of the lead sleeve penetrates out of the mounting hole and is connected with a gauge head of the pressure transmitter; the other end of the diaphragm sleeve is in threaded connection with the diaphragm sleeve, a pressure measuring hole is formed in the end portion of the diaphragm sleeve, a first sealing ring, a diaphragm and a pressing piece are sequentially arranged on the inner side of the pressure measuring hole, and the pressing piece is provided with a central hole; the pressing piece covers the membrane to enable the membrane to be in sealing fit with the first sealing ring; the other end of the lead is connected with the gauge outfit; the pressure measuring position of the diaphragm extends into the main runner of the Christmas tree, the detection position is slightly transferred to the main runner from the tail of the Christmas tree and is positioned in the main runner with large fluidity of the medium, and therefore the fluid medium is not easy to wax, thick oil and freeze due to low temperature, and the accuracy of data detection is improved.
Description
Technical Field
The utility model relates to the technical field of pressure transmitter corollary equipment, in particular to a connection structure of a Christmas tree and a pressure transmitter.
Background
In an oil extraction system, a pressure transmitter is used as a sensing device for acquiring pressure signals, and is widely applied. At present, a Christmas tree pressure transmitter is generally installed at the tail end of a Christmas tree production valve, fluid flows to a diaphragm of the pressure transmitter through a pressure guiding flow channel of the pressure transmitter, a pressure signal is converted into an electric signal through the diaphragm, and the electric signal is displayed on a gauge head of the pressure transmitter. In the existing pressure transmitter mounting structure, because the pressure guiding flow channel of the pressure transmitter is thin (the thinnest part is only 1.5 mm), and heat exchange basically does not exist between a medium and a fluid in a main flow channel of a Christmas tree when the medium flows in the thin pressure guiding flow channel, the fluid often flows unsmoothly or is blocked in the pressure guiding flow channel due to wax precipitation, thick oil and low-temperature icing of the fluid in the production process, and further the pressure display value is inaccurate. Inaccurate pressure value of the transmitter can lead to the fact that an operator cannot accurately judge the production condition of the oil well, so that the production process is in an uncontrollable state, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems, and provides a connection structure of a Christmas tree and a pressure transmitter, which can avoid medium wax precipitation, thick oil and low-temperature icing and ensure that a pressure display value is always accurately displayed.
Utility model solves the problem, the technical scheme who adopts is:
a connection structure of a Christmas tree and a pressure transmitter comprises an outer sleeve, a lead sleeve and a diaphragm sleeve; the connecting end of the outer sleeve is connected with the tail end of the Christmas tree, the pressure relief end of the outer sleeve is connected with a pressure relief plug in a threaded manner, and the outer sleeve is provided with a mounting hole for mounting a lead sleeve; the lead sleeve is of an L-shaped structure, and the vertical end of the lead sleeve penetrates out of the mounting hole and is connected with the gauge outfit of the pressure transmitter; the horizontal end of the lead sleeve penetrates out of the outer sleeve connecting end and extends into a main runner of the Christmas tree, the horizontal end of the lead sleeve is in threaded connection with the diaphragm sleeve, a blocking piece is arranged at the end part of the diaphragm sleeve, a pressure measuring hole is formed in the blocking piece, a first sealing ring is arranged on the inner side of the pressure measuring hole, a diaphragm is arranged on the inner side of the first sealing ring, a pressing piece is arranged on the rear side of the diaphragm, and a central hole for the diaphragm lead to penetrate out is formed in the pressing piece; the pressing piece presses the membrane to enable the membrane to be in sealing fit with the first sealing ring; the other end of the lead is connected with the gauge outfit.
Compared with the prior art, the utility model adopting the technical scheme has the outstanding characteristics that:
the pressure measuring position of the diaphragm extends into the main runner of the Christmas tree, and the detection position is slightly transferred from the tail of the Christmas tree to the trunk and is positioned in the main runner with larger fluidity of the medium, so that the fluid medium is not easy to wax, thick oil and freeze due to low temperature, and the accuracy of data detection is improved.
Preferably, the further technical scheme of the utility model is as follows:
the pressing piece comprises a pressing cap in threaded connection with the diaphragm sleeve and a nylon gasket connected between the pressing cap and the diaphragm; the tail end of the pressing cap is prevented from being directly pressed and covered with the diaphragm, and the nylon washer has the characteristics of insulation, corrosion resistance, heat insulation and non-magnetism, and cannot damage the diaphragm.
The pressure relief plug comprises a mounting seat and a conical plug; the mounting seat is in threaded connection with the inside of the pressure relief end of the outer sleeve, and an inverted cone-shaped through hole matched with the conical plug is formed in the mounting seat; the conical plug is provided with a pressure relief hole which penetrates through the conical surface at the front end and the rear end surface of the conical plug, and the conical plug is in threaded connection with the inverted conical through hole of the mounting seat; when the sensor diaphragm is in problem or the pressure of the underground liquid level needs to be measured, the pressure can be released only by unscrewing the conical plug.
A second sealing ring is arranged between the conical plug and the mounting seat; the integral sealing performance of the connecting structure is ensured.
The diameter of the pressure relief hole is 5-10 mm; the contact area of the sensor diaphragm and the fluid is large, wax precipitation, thick oil and low-temperature icing of the fluid are avoided, and the accuracy of the measurement result is improved.
Drawings
Fig. 1 is a schematic structural diagram of a connection structure of a christmas tree and a pressure transmitter according to an embodiment of the present invention.
In the figure: 1. a jacket; 101. mounting holes; 2. a lead bushing; 3. a diaphragm sleeve; 301. a baffle plate; 3011. a pressure measuring hole; 302. a first seal ring; 303. a nylon washer; 304. pressing the cap; 401. a mounting seat; 402. a conical plug; 403. a second seal ring; 404. a pressure relief vent; 5. a pressure transmitter; 501. a gauge head; 502. a lead wire; 503. a membrane; 6. a Christmas tree.
Detailed Description
The utility model will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the utility model.
As shown in fig. 1, the connection structure of the christmas tree and the pressure transmitter comprises an outer sleeve 1, a lead sleeve 2 and a diaphragm sleeve 3. The connecting end of the outer sleeve 1 is in threaded connection with the tail end of the Christmas tree 6, and the pressure relief end of the outer sleeve 1 is in threaded connection with a pressure relief plug. The outer sleeve 1 is provided with a mounting hole 101 for mounting the lead bushing 2. The lead sleeve 2 is of an L-shaped structure, and the vertical end of the lead sleeve 2 penetrates out of the mounting hole 101 and is in threaded connection with the lower end of the gauge outfit 501 of the pressure transmitter 5. The horizontal end of the lead casing 2 penetrates out from the connecting end of the jacket 1 and extends into the main runner of the Christmas tree 6. The horizontal end of the lead wire sleeve 2 is in threaded connection with the diaphragm sleeve 3, the end part of the diaphragm sleeve 3 is provided with a baffle plate 301, the baffle plate 301 is provided with a pressure measuring hole 3011, and the diameter of the pressure measuring hole 3011 is 5-10mm, which is larger than the drainage hole (3-5 mm) at the lower end of the general pressure transmitter 5. A first sealing ring 302 is arranged on the inner side of the pressure measuring hole 3011, a diaphragm 503 is arranged on the inner side of the first sealing ring 302, and a pressing piece is arranged on the rear side of the diaphragm 503. The pressing member is provided with a central hole through which the lead 502 of the diaphragm 503 passes. The pressing member presses the membrane 503 to make the membrane 503 tightly fit with the first sealing ring 302. The other end of the lead 502 is connected to the header 501. Wherein, the vertical part and the horizontal part of the lead casing 2 are separately manufactured, and the lower end of the vertical part is in threaded connection with the horizontal part; the connecting sleeve is made of a 2.5-inch high-pressure oil pipe.
The pressing member includes a pressing cap 304 screwed into the diaphragm sleeve 3 and a nylon washer 303 connected between the pressing cap 304 and the diaphragm 503. The pressing cap 304 is a hexagonal pressing cap, one end of the pressing cap 304 close to the gasket is in threaded connection with the inner wall of the membrane sleeve 3, and the other end of the pressing cap compresses the membrane 503 through the pressing nylon gasket 303. By utilizing the insulating, corrosion-resistant and heat-insulating properties of the nylon gasket 303, the gasket is prevented from damaging the diaphragm 503.
The pressure relief plug comprises a mounting seat 401 and a conical plug 402; the mounting seat 401 is in threaded connection with the inside of the pressure relief end of the outer sleeve 1, and an inverted cone-shaped through hole matched with the conical plug 402 is formed in the mounting seat 401; the tapered plug 402 is provided with a pressure relief hole 404 which penetrates through the tapered surface and the rear end surface of the front end of the tapered plug 402, and the tapered plug 402 is in threaded connection with the inverted conical through hole of the mounting seat 401. A second sealing ring 403 is arranged between the conical plug 402 and the mounting seat 401, the second sealing ring 403 is positioned at the front end of the pressure relief hole 404, and the conical plug 402 and the mounting seat 401 are tightly screwed and sealed through the second sealing ring 403. When the sensor diaphragm 503 has a problem or the pressure of the underground liquid level needs to be measured, the conical plug 402 is only required to be unscrewed for pressure relief. The first seal ring 302 and the second seal ring 403 are O-ring seals.
When the sensor diaphragm is installed, firstly, the sensor diaphragm 503 is hermetically installed in the diaphragm sleeve 3 through the nylon gasket 303, the pressing cap 304 and the first sealing ring 302; the diaphragm lead 502 passes through the central hole, the diaphragm sleeve 3 and the lead sleeve 2 to be connected with the gauge head 501. Wear to establish lead wire 502 the time, with lead wire sleeve 2's vertical section threaded connection at pressure transmitter 5 lower extreme, stretch into mounting hole 101 with vertical portion lower extreme, lead wire sleeve 2 horizontal part stretches into from 1 one end of overcoat, with vertical portion threaded connection. The vertical portions of the outer jacket 1 and the lead sleeve 2 are welded and fixed to the mounting hole 101 (here, the outer jacket 1 and the lead sleeve 2 may be directly formed integrally). Then, the horizontal portion end of the lead frame 2 is screwed to the diaphragm frame 3. The mounting seat 401 is in threaded connection with the pressure relief end of the outer sleeve 1, and the tapered plug 402 is in threaded connection with the mounting seat 401. The diaphragm casing 3 is inserted into the main runner of the Christmas tree 6, and the other end of the outer sleeve 1 is in threaded connection with a flange at the tail end of the Christmas tree 6.
When the pressure gauge is used, the diaphragm casing 3 extends into a main flow channel of the Christmas tree 6, fluid directly contacts the diaphragm 503 through the pressure measuring hole 3011, and the diaphragm 503 converts a pressure signal into an electric signal and transmits the electric signal to the gauge outfit 501 through the lead 502 for displaying. When the sensor diaphragm 503 has a problem or the pressure of the underground liquid level needs to be measured, the conical plug 402 is only required to be unscrewed for pressure relief.
The pressure measuring device has the advantages of simple structure and convenience in installation and use, the pressure measuring position of the diaphragm extends into the main runner of the Christmas tree, and the detection position is slightly transferred from the tail end of the Christmas tree to the trunk and is positioned in the main runner with larger fluidity of the medium, so that the fluid medium is not easy to wax, thick oil and freeze due to low temperature, the pressure value can be accurately measured, an operator can be ensured to accurately judge the production condition in the production process, and the production process is ensured to be safe and controllable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (5)
1. The utility model provides a connection structure of production tree and pressure transmitter which characterized in that: comprises an outer sleeve, a lead sleeve and a diaphragm sleeve;
the connecting end of the outer sleeve is connected with the tail end of the Christmas tree, the pressure relief end of the outer sleeve is connected with a pressure relief plug in a threaded manner, and the outer sleeve is provided with a mounting hole for mounting a lead sleeve;
the lead sleeve is of an L-shaped structure, and the vertical end of the lead sleeve penetrates out of the mounting hole and is connected with the gauge outfit of the pressure transmitter; the horizontal end of the lead sleeve penetrates out from the connecting end of the outer sleeve and extends into the main runner of the Christmas tree, the horizontal end of the lead sleeve is connected with the diaphragm sleeve by screw thread,
the end part of the diaphragm sleeve is provided with a blocking piece, the blocking piece is provided with a pressure measuring hole, the inner side of the pressure measuring hole is provided with a first sealing ring, the inner side of the first sealing ring is provided with a diaphragm, the rear side of the diaphragm is provided with a pressing piece, and the pressing piece is provided with a central hole for a diaphragm lead to penetrate out; the pressing piece presses the membrane to enable the membrane to be in sealing fit with the first sealing ring; the other end of the lead is connected with the gauge outfit.
2. The connection structure of the Christmas tree to the pressure transmitter of claim 1, wherein: the pressing piece comprises a pressing cap which is in threaded connection with the membrane sleeve and a nylon gasket which is connected between the pressing cap and the membrane.
3. The connection structure of the Christmas tree to the pressure transmitter of claim 1, wherein: the pressure relief plug comprises a mounting seat and a conical plug; the mounting seat is in threaded connection with the inside of the pressure relief end of the outer sleeve, and an inverted cone-shaped through hole matched with the conical plug is formed in the mounting seat; the tapered plug is provided with a pressure relief hole which penetrates through the front end conical surface and the rear end surface of the tapered plug, and the tapered plug is in threaded connection with the inverted cone-shaped through hole of the mounting seat.
4. The connection structure of the Christmas tree to the pressure transmitter of claim 3, wherein: a second sealing ring is arranged between the conical plug and the mounting seat.
5. The connection structure of the Christmas tree and the pressure transmitter of claim 1, wherein: the diameter of the pressure relief hole is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237998.7U CN216746554U (en) | 2022-01-28 | 2022-01-28 | Connection structure of Christmas tree and pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237998.7U CN216746554U (en) | 2022-01-28 | 2022-01-28 | Connection structure of Christmas tree and pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216746554U true CN216746554U (en) | 2022-06-14 |
Family
ID=81916150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237998.7U Active CN216746554U (en) | 2022-01-28 | 2022-01-28 | Connection structure of Christmas tree and pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216746554U (en) |
-
2022
- 2022-01-28 CN CN202220237998.7U patent/CN216746554U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220706 Address after: No.16 ande Road, Dongcheng District, Beijing Patentee after: PetroChina Company Limited Address before: 065300 101 (shop 38), unit 79, building 26, zone a, modern xingfucheng community, Dachang Hui Autonomous County, Langfang City, Hebei Province Patentee before: HEBEI XINHUI PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |