CN101550827B - Method and device for preventing air from leaking in manometer - Google Patents
Method and device for preventing air from leaking in manometer Download PDFInfo
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- CN101550827B CN101550827B CN2008103008207A CN200810300820A CN101550827B CN 101550827 B CN101550827 B CN 101550827B CN 2008103008207 A CN2008103008207 A CN 2008103008207A CN 200810300820 A CN200810300820 A CN 200810300820A CN 101550827 B CN101550827 B CN 101550827B
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- joint
- storage liquid
- liquid
- mounting bracket
- sealing ring
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Abstract
The invention discloses a method and device for preventing air from leaking in a manometer. The method comprises the following steps: a pressure sensor is fixed in a center hole of a mounting bracket and is sheathed with a seal ring, wherein the center hole of the mounting bracket is provided with stairs on which a copper washer is laid on, and the pressure sensor is pressed tightly on the copper washer by a compression screw plug; the mounting bracket at the other end of the compression screw plug is screwed with a liquid storage connector which is sheathed with a seal ring and in the liquid storage connector, a liquid storage cavity and a liquid storage tube are arranged; the other end of the liquid storage connector is sheathed with a seal ring and screwed with a leakage-proof connector; and the leakage-proof connector and the liquid storage cavity and the liquid storage tube of the liquid storage connector are filled with spacer fluid. The method adopts triple seal with the copper washer, the spacer fluid and the seal ring, thereby improving the service life of the manometer and the reliability and accuracy of measurement.
Description
Technical field
The invention belongs to the pressure measxurement field, particularly a kind of method and the device of gas permeation that prevent when being used for measurement gas pressure to pressure gauge.
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 through 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 that pressure gauge is inner; 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.
Summary of the invention
The object of the present invention is to provide a kind of method and the 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 present invention is achieved in that the gas permeation that prevents of the present invention to the method in the pressure gauge does; It is fixed on pressure sensor in the centre bore with step of mounting bracket; On pressure sensor, be with sealing ring; On the step of mounting bracket, be lined with copper washer, with compressing plug screw with pressure sensor being pressed on the copper washer tightly; In the mounting bracket that compresses the plug screw other end, be rotary with the storage liquid joint that is with sealing ring, be provided with storage liquid air chamber and liquid storage tube in the storage liquid joint; The other end of storage liquid joint is established and is with sealing ring, and is rotary with Matheson and Dresser joint; Be full of insulating liquid in storage liquid air chamber in Matheson and Dresser joint and the storage liquid joint and the liquid storage tube.
Above-mentioned preventing in the method for gas permeation in the pressure gauge; Described Matheson and Dresser joint is made up of joint and stainless steel double-deck spiral pipe of thermal; Joint is provided with connecting hole; Stainless steel double-deck spiral pipe of thermal hollow can be delivered on the pressure sensor ambient pressure, and stainless steel double-deck spiral pipe of thermal one end inserts in the connecting hole and the sealing welding.
Prevent the device of gas permeation in the pressure gauge according to the aforesaid gas permeation that prevents to what the method in the pressure gauge was processed; It is characterized in that: it comprises mounting bracket 1; Be provided with centre bore 3 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 with step 2; 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 up 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 the sealing welding.
Aforesaidly prevent that the low fluorubber of described sealing ring 5 usefulness air penetrabilities is processed 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 basically in short-term is used; If but pressure gauge uses in having the gas of pressure for a long time,, be easy to be penetrated in the pressure gauge slowly through the sealing ring of rubber material in the existing pressure sensing head because gas molecule is smaller; Build-up of pressure meter inside has pressure to exist, and makes the damage of components such as electronic component, battery and pressure sensor that pressure gauge is inner; Also have a strong impact on manometric measuring accuracy, can't record accurate data.And the present invention 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 invention;
Accompanying drawing 2 is sketch mapes of storage liquid joint among the present invention;
Accompanying drawing 3 is sketch mapes of mounting bracket among the present invention;
Accompanying drawing 4 is sketch mapes of Matheson and Dresser joint among the present invention.
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
Embodiments of the invention: the method for gas permeation in the pressure gauge that prevent of the present invention, as shown in Figure 1.This method is that pressure sensor 6 is fixed in the centre bore with step 23 of mounting bracket 1, on pressure sensor 6, is with sealing ring 5, and sealing ring 5 had both played the effect of seal 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 (like 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,, prevent that effectively gas pressure from infiltrating pressure gauge so be not easy through sealing ring 5 and copper washer 4.Described Matheson and Dresser joint 11 is made up 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 hollows can make ambient pressure be delivered on the pressure sensor like this, insert in the connecting hole one of which end and the sealing welding.
Prevent the device of gas permeation in the pressure gauge according to the aforesaid gas permeation that prevents to what the method in the pressure gauge was processed, its structure is as shown in Figure 1.It comprises mounting bracket 1; Be provided with centre bore 3 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 with step 2; 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 up 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 the sealing welding.The low fluorubber of described sealing ring 5 the most handy air penetrabilities is processed.
The present invention 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 (5)
1. one kind prevents the method for gas permeation in the pressure gauge; It is characterized in that: pressure sensor is fixed in the centre bore with step of mounting bracket; On pressure sensor, be with sealing ring; On the step of mounting bracket, be lined with copper washer, with compressing plug screw with pressure sensor being pressed on the copper washer tightly; In the mounting bracket that compresses the plug screw other end, be rotary with the storage liquid joint that is with sealing ring, be provided with storage liquid air chamber and liquid storage tube in the storage liquid joint; The other end of storage liquid joint is established and is with sealing ring, and is rotary with Matheson and Dresser joint; Be full of insulating liquid in storage liquid air chamber in Matheson and Dresser joint and the storage liquid joint and the liquid storage tube.
2. the method for gas permeation in the pressure gauge that prevent according to claim 1; It is characterized in that: described Matheson and Dresser joint is made up of joint and stainless steel double-deck spiral pipe of thermal; Joint is provided with connecting hole; Stainless steel double-deck spiral pipe of thermal hollow can be delivered on the pressure sensor ambient pressure, and stainless steel double-deck spiral pipe of thermal one end inserts in the connecting hole and the sealing welding.
3. prevent the device of gas permeation in the pressure gauge according to claim 1 or the 2 described gas permeation that prevent to what the method in the pressure gauge was processed; 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), and an end of pressure sensor (6) is rotary with and compresses plug screw (7), compresses in the mounting bracket (1) of plug screw (7) other end and is 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), is provided with sealing ring (5), is 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).
4. the device of gas permeation in the pressure gauge that prevent according to claim 3; It is characterized in that: described Matheson and Dresser joint (11) is made up 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 are inserted in the connecting hole (15) and the sealing welding.
5. the device of gas permeation in the pressure gauge that prevent according to claim 3, it is characterized in that: described sealing ring (5) is processed with the low fluorubber of air penetrability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103008207A CN101550827B (en) | 2008-04-02 | 2008-04-02 | Method and device for preventing air from leaking in manometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103008207A CN101550827B (en) | 2008-04-02 | 2008-04-02 | Method and device for preventing air from leaking in manometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101550827A CN101550827A (en) | 2009-10-07 |
| CN101550827B true CN101550827B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103008207A Active CN101550827B (en) | 2008-04-02 | 2008-04-02 | Method and device for preventing air from leaking in manometer |
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| CN (1) | CN101550827B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132988B (en) * | 2012-12-21 | 2016-01-20 | 贵州航天凯山石油仪器有限公司 | A kind of gyrolevel telemetry cartridge is connected the method and device that seal with head harness |
| CN110700814A (en) * | 2019-10-28 | 2020-01-17 | 贵州航天凯山石油仪器有限公司 | Method and device for improving sealing reliability of gas well pressure gauge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946506Y (en) * | 2006-08-01 | 2007-09-12 | 贵州航天凯山石油仪器有限公司 | Mounting structure of pressure sensor |
| CN200964846Y (en) * | 2006-10-31 | 2007-10-24 | 贵州航天凯山石油仪器有限公司 | Electronic pressure meter structure |
| CN201202471Y (en) * | 2008-04-02 | 2009-03-04 | 贵州航天凯山石油仪器有限公司 | Apparatus for preventing gas seepage into pressure meter |
-
2008
- 2008-04-02 CN CN2008103008207A patent/CN101550827B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946506Y (en) * | 2006-08-01 | 2007-09-12 | 贵州航天凯山石油仪器有限公司 | Mounting structure of pressure sensor |
| CN200964846Y (en) * | 2006-10-31 | 2007-10-24 | 贵州航天凯山石油仪器有限公司 | Electronic pressure meter structure |
| CN201202471Y (en) * | 2008-04-02 | 2009-03-04 | 贵州航天凯山石油仪器有限公司 | Apparatus for preventing gas seepage into pressure meter |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-131147A 2002.05.09 |
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| CN101550827A (en) | 2009-10-07 |
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