CN201202471Y - Device for preventing gas leakage into pressure gauge - Google Patents
Device for preventing gas leakage into pressure gauge Download PDFInfo
- Publication number
- CN201202471Y CN201202471Y CNU2008203004983U CN200820300498U CN201202471Y CN 201202471 Y CN201202471 Y CN 201202471Y CN U2008203004983 U CNU2008203004983 U CN U2008203004983U CN 200820300498 U CN200820300498 U CN 200820300498U CN 201202471 Y CN201202471 Y CN 201202471Y
- Authority
- CN
- China
- Prior art keywords
- joint
- liquid
- pressure gauge
- liquid storage
- centre bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract 2
- 239000000872 buffer Substances 0.000 abstract 1
- 239000007853 buffer solution Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002343 natural gas well Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-N n-Decanedioic acid Natural products OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a prevent device of gas leakage to pressure gauge in, it includes the installing support, be equipped with the centre bore that has the step in the installing support, it has the copper packing ring to fill up on the step of centre bore, install the pressure sensor who has the sealing washer in the centre bore, pressure sensor's one end has soon compressed tightly the plug screw, it has the liquid storage joint who has the sealing washer to compress tightly to revolve in the installing support of the plug screw other end, be equipped with liquid storage cavity and liquid receiver in the liquid storage joint, the other end of liquid storage joint has soon the leak protection to connect, be equipped with the sealing washer between liquid storage joint and leak protection joint, be full of the buffer liquid in liquid storage cavity and the liquid receiver in leak protection joint and the liquid storage joint. The utility model discloses a triple sealed method of copper packing ring, buffer solution and sealing washer can effectually prevent that the pressure gauge is under long-term operating condition, and gas leakage has improved the working life and the measuring reliability and the accuracy of pressure gauge in to the pressure gauge.
Description
Technical field
The utility model relates to and a kind ofly prevents the device of gas permeation to pressure gauge when being used for measurement gas pressure, belongs to the pressure measurement technology field.
Background technology
Carry out gas well at the natural gas well and recover in the pressure process of (being called for short " the multiple pressure ") important content that pressure test is.And wholely press the chronic of process again, and often need about three months, in this very long multiple pressure process, want continual pressure to monitor to the down-hole.This just need will be placed on the down-hole to pressure gauge for a long time, and continual gas pressure to the down-hole is monitored.Since the monitoring to as if gas, and gas molecule is smaller, be easy to be penetrated in the pressure gauge slowly by the sealing ring of rubber material in the present pressure sensing head, build-up of pressure meter inside has pressure to exist, and makes the damage of components such as electronic component, battery and pressure sensor of pressure gauge inside; Also have a strong impact on manometric measuring accuracy, can't record accurate data.In addition because the mounting structure of pressure sensor is more special, be not easy to often change or safeguard, so manometric sensor head structure and sealing reliability are required very high, prevent pressure gauge in the course of the work gas permeation in pressure gauge, to guarantee the reliability and the accuracy of monitoring.
The utility model content
The purpose of this utility model is to provide a kind of device of gas permeation in the pressure gauge that prevent.It can effectively prevent pressure gauge under the long-term work state, and gas permeation is in pressure gauge, to improve manometric working life and measuring reliability and accuracy.
The utility model is to constitute like this: it comprises mounting bracket 1, be provided with centre bore 3 in the mounting bracket 1 with step 2, be lined with copper washer 4 on the step 2 of centre bore 3, the pressure sensor 6 that is with sealing ring 5 is installed in the centre bore 3, one end of pressure sensor 6 is rotary with and compresses plug screw 7, compress in the mounting bracket 1 of plug screw 7 other ends and be rotary with the storage liquid joint 8 that is with sealing ring 5, be provided with storage liquid air chamber 9 and liquid storage tube 10 in the storage liquid joint 8, the other end of storage liquid joint 8 is rotary with Matheson and Dresser joint 11, between storage liquid joint 8 and Matheson and Dresser joint 11, be provided with sealing ring 5, be full of insulating liquid 12 in storage liquid air chamber 9 in Matheson and Dresser joint 11 and the storage liquid joint 8 and the liquid storage tube 10.
Above-mentioned preventing in the device of gas permeation in the pressure gauge, described Matheson and Dresser joint 11 is made of joint 13 and stainless steel double-deck spiral pipe of thermal 14, joint 13 is provided with connecting hole 15, the end sealing of stainless steel double-deck spiral pipe of thermal 14, and the other end inserts in the connecting hole 15 and seal welding.
Aforesaidly prevent that the low fluorubber of described sealing ring 5 usefulness air penetrabilities is made in the device of gas permeation in the pressure gauge.
Compared with prior art, the existing gas permeation that prevents is to adopt sealing ring to come separation gas to leak in the pressure gauge to the method in the pressure gauge, there is not any problem in this method substantially in short-term is used, if but pressure gauge uses in having the gas of pressure for a long time, because gas molecule is smaller, be easy to be penetrated in the pressure gauge slowly by the sealing ring of rubber material in the existing pressure sensing head, build-up of pressure meter inside has pressure to exist, and makes the damage of components such as electronic component, battery and pressure sensor of pressure gauge inside; Also have a strong impact on manometric measuring accuracy, can't record accurate data.And the utility model has adopted the method for copper washer, insulating liquid and sealing ring triple seal, thus can effectively prevent gas permeation in pressure gauge, to improve manometric working life and measuring reliability and accuracy.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is schematic diagrames of storage liquid joint in the utility model;
Accompanying drawing 3 is schematic diagrames of mounting bracket in the utility model;
Accompanying drawing 4 is schematic diagrames of Matheson and Dresser joint in the utility model.
Being labeled as in the accompanying drawing: 1-mounting bracket, 2-step, 3-centre bore, 4-copper washer, 5-sealing ring, the 6-pressure sensor, 7-compresses plug screw, 8-storage liquid joint, 9-storage liquid air chamber, 10-liquid storage tube, the 11-Matheson and Dresser joint, 12-insulating liquid, 13-joint, 14-stainless steel double-deck spiral pipe of thermal, 15-connecting hole.
The specific embodiment
Embodiment of the present utility model: as shown in Figure 1, it comprises mounting bracket 1, be provided with centre bore 3 in the mounting bracket 1 with step 2, be lined with copper washer 4 on the step 2 of centre bore 3, the pressure sensor 6 that is with sealing ring 5 is installed in the centre bore 3, one end of pressure sensor 6 is rotary with and compresses plug screw 7, compress in the mounting bracket 1 of plug screw 7 other ends and be rotary with the storage liquid joint 8 that is with sealing ring 5, be provided with storage liquid air chamber 9 and liquid storage tube 10 in the storage liquid joint 8, the other end of storage liquid joint 8 is rotary with Matheson and Dresser joint 11, between storage liquid joint 8 and Matheson and Dresser joint 11, be provided with sealing ring 5, be full of insulating liquid 12 in storage liquid air chamber 9 in Matheson and Dresser joint 11 and the storage liquid joint 8 and the liquid storage tube 10.Described Matheson and Dresser joint 11 is made of joint 13 and stainless steel double-deck spiral pipe of thermal 14, and joint 13 is provided with connecting hole 15, the end sealing of stainless steel double-deck spiral pipe of thermal 14, and the other end inserts in the connecting hole 15 and seal welding.The low fluorubber of described sealing ring 5 the most handy air penetrabilities is made.
The utility model is that pressure sensor 6 is fixed in the centre bore with step 23 of mounting bracket 1, is with sealing ring 5 on pressure sensor 6, and sealing ring 5 had both played the effect of seal isolation liquid, also pressure sensor 6 has been played the effect of damping.On the step 2 of mounting bracket 1, be lined with copper washer 4, be spun in the mounting bracket 1 with compressing plug screw 7, with pressure sensor 6 being pressed on the copper washer 4 tightly, because copper washer 4 is softer, the end face and the copper washer 4 of pressure sensor 6 are fitted tightly, played the effect of sealing load and insulating liquid; In the mounting bracket 1 that compresses plug screw 7 other ends, be rotary with the storage liquid joint 8 that is with sealing ring, be provided with storage liquid air chamber 9 and liquid storage tube 10 in the storage liquid joint 8; The other end of storage liquid joint 8 is established and is with sealing ring 5, and is rotary with Matheson and Dresser joint 11; Be full of insulating liquid 12 in storage liquid air chamber 9 in Matheson and Dresser joint 11 and the storage liquid joint 8 and the liquid storage tube 10, here insulating liquid 12 is just selected the bigger liquid of molecular structure (as decanedioic acid diethyl monooctyl ester) for use, insulating liquid 12 has played the effect of separation gas pressure, because the molecular proportion gas of liquid is big, so be not easy by sealing ring 5 and copper washer 4, prevent that effectively gas pressure from infiltrating pressure gauge.Described Matheson and Dresser joint 11 is made of joint 13 and stainless steel double-deck spiral pipe of thermal 14, joint is provided with connecting hole 15, stainless steel double-deck spiral pipe of thermal 14 is made into hollow, ambient pressure is delivered on the pressure sensor, and insert the one end in the connecting hole and seal welding gets final product.
The utility model is applicable to the natural gas well or conventional oil, the well down-hole occasion with the long-term test pressure of electronics manometer pressure.
Claims (3)
- [claim 1] a kind of to prevent the device of gas permeation in the pressure gauge, it is characterized in that: it comprises mounting bracket (1), be provided with the have step centre bore (3) of (2) in the mounting bracket (1), be lined with copper washer (4) on the step (2) of centre bore (3), the pressure sensor (6) that is with sealing ring (5) is installed in the centre bore (3), one end of pressure sensor (6) is rotary with and compresses plug screw (7), compress in the mounting bracket (1) of plug screw (7) other end and be rotary with the storage liquid joint (8) that is with sealing ring (5), be provided with storage liquid air chamber (9) and liquid storage tube (10) in the storage liquid joint (8), the other end of storage liquid joint (8) is rotary with Matheson and Dresser joint (11), between storage liquid joint (8) and Matheson and Dresser joint (11), be provided with sealing ring (5), be full of insulating liquid (12) in storage liquid air chamber (9) in Matheson and Dresser joint (11) and the storage liquid joint (8) and the liquid storage tube (10).
- [claim 2] according to claim 1 to prevent the device of gas permeation in the pressure gauge, it is characterized in that: described Matheson and Dresser joint (11) is made of joint (13) and stainless steel double-deck spiral pipe of thermal (14), joint (13) is provided with connecting hole (15), the one end sealing of stainless steel double-deck spiral pipe of thermal (14), the other end inserts in the connecting hole (15) and seal welding.
- [claim 3] according to claim 1 to prevent the device of gas permeation in the pressure gauge, and it is characterized in that: described sealing ring (5) is made with the low fluorubber of air penetrability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004983U CN201202471Y (en) | 2008-04-02 | 2008-04-02 | Device for preventing gas leakage into pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004983U CN201202471Y (en) | 2008-04-02 | 2008-04-02 | Device for preventing gas leakage into pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202471Y true CN201202471Y (en) | 2009-03-04 |
Family
ID=40424785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203004983U Expired - Lifetime CN201202471Y (en) | 2008-04-02 | 2008-04-02 | Device for preventing gas leakage into pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202471Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550827B (en) * | 2008-04-02 | 2012-07-04 | 贵州航天凯山石油仪器有限公司 | Method and device for preventing air from leaking in manometer |
| CN109668679A (en) * | 2019-01-29 | 2019-04-23 | 中国石油集团川庆钻探工程有限公司 | Multistage buffer isolation device for quartz crystal pressure gauge sensor |
| CN111997592A (en) * | 2020-07-31 | 2020-11-27 | 中国石油天然气集团有限公司 | Pressure gauge sensor dismounting device |
-
2008
- 2008-04-02 CN CNU2008203004983U patent/CN201202471Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550827B (en) * | 2008-04-02 | 2012-07-04 | 贵州航天凯山石油仪器有限公司 | Method and device for preventing air from leaking in manometer |
| CN109668679A (en) * | 2019-01-29 | 2019-04-23 | 中国石油集团川庆钻探工程有限公司 | Multistage buffer isolation device for quartz crystal pressure gauge sensor |
| CN109668679B (en) * | 2019-01-29 | 2023-11-03 | 中国石油集团川庆钻探工程有限公司 | Multistage buffering isolation device for quartz crystal pressure gauge sensor |
| CN111997592A (en) * | 2020-07-31 | 2020-11-27 | 中国石油天然气集团有限公司 | Pressure gauge sensor dismounting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090304 Effective date of abandoning: 20080402 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090304 Effective date of abandoning: 20080402 |