CN201074513Y - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN201074513Y CN201074513Y CNU2007201701841U CN200720170184U CN201074513Y CN 201074513 Y CN201074513 Y CN 201074513Y CN U2007201701841 U CNU2007201701841 U CN U2007201701841U CN 200720170184 U CN200720170184 U CN 200720170184U CN 201074513 Y CN201074513 Y CN 201074513Y
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- CN
- China
- Prior art keywords
- grating
- pressure
- axostylus axostyle
- pulling block
- sleeve barrel
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- Expired - Lifetime
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a pressure sensor, which comprises a protecting sleeve barrel and a pressure resistance sleeve barrel, wherein the protecting sleeve barrel is connected with the pressure resistance sleeve barrel through a connecting block, the end portion of the pressure resistance sleeve barrel is provided with a pressure inlet, the inner lateral of the pressure resistance sleeve barrel is provided with a pressure inner pipe, and the inner cavity of the pressure inner pipe is provided with a shaft lever. One end of the shaft lever which is penetrated into the protecting sleeve barrel through the connecting block is provided with a grating moving pulling block, the position on the connecting block relative to the grating moving pulling block is provided with a grating fixing tensile block, a pressure testing grating is arranged between the grating moving pulling block and the grating fixing pulling block, and the pressure testing grating is connected with an optical fiber terminal which is arranged in the end portion of the protecting sleeve barrel through an optical fiber. The utility model adopts optical signal instead of electromagnetic signal, a sensor connected with an analytical apparatus through an optical fiber, and electromagnetism can not disturb the device. The whole sensor is sealed, which can not be moistened. The main manufacturing materials can use quartz, which is particularly applied to a worst working condition. The utility model adopts wavelength encoding, and a plurality of sensors can be connected in series on one optical fiber, which is easy to form network. The device has long service life, which can be used more than fifteen years.
Description
Technical field
The utility model relates to a kind of pressure sensor, particularly a kind of sensor of measuring different depth pressure in the producing well that is applicable to.
Background technology
In producing well, need monitor the pressure of different depth, to guarantee the safety of recovering the oil and normally to carry out.At present, what monitoring producing well pressure was mainly used is the pressure sensor of electrical type, and the electrical type pressure sensor is subject to electromagnetic interference, is afraid of to make moist, and is higher to environmental requirement, therefore is of limited application, and application life is low, causes cost for oil production to increase.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of power supply that need not, and is not subjected to electromagnetic interference, is not afraid of the long pressure sensor of thunderbolt and signal transmission distance.
Pressure sensor of the present utility model comprises: a protection sleeve and a withstand voltage sleeve, and described protection sleeve is connected by contiguous block with withstand voltage sleeve; Described withstand voltage sleeve ends is provided with pressure entrance, and the inboard is provided with pipe in the pressure; Be provided with axostylus axostyle in the tube cavity in the described pressure; Described axostylus axostyle one end passes described contiguous block and enters protection sleeve, and is provided with the moving pulling block of grating at this end; The position of the moving pulling block of corresponding described grating is provided with grating and decide pulling block on contiguous block, and described grating moves pulling block and grating decides to be provided with between the pulling block pressure measurement grating, and described pressure measurement grating links to each other with the optic fibre connector that is arranged on the protection sleeve end by optical fiber.
High-pressure fluid is entered by the pressure entrance on the withstand voltage sleeve; make pressure outer wall of inner tube increased pressure; high-pressure fluid makes pipe compression in the pressure; shorten to protection sleeve one side vertically; pipe racks moving axis bar is to protection sleeve one lateral movement in the pressure; cause moving pulling block of grating and grating to be decided between the pulling block apart from becoming big; the variation of this distance is pulled in the moving pulling block of grating and grating and decides pressure measurement grating institute perception between the pulling block; the pressure measurement grating is sent to fiber grating analyzer by optical fiber in the mode of optical signal with the variable in distance amount that perceived; analyzer can be analyzed out with optical signal, draws the size of pressure entrance institute entrance pressure power.Pressure sensor of the present utility model adopts optical signal to replace electromagnetic signal, adopts optical fiber to connect between sensor and the analytical instrument, can not be subjected to electromagnetic interference; Whole sensor seals, and is not afraid of and makes moist, and is low to environmental requirement; Its main manufacturing materials can be more suitable for using in abominable corrosive environment with quartzy; Adopt Wavelength-encoding, a plurality of sensors of can on an optical fiber, connecting, networking easily; Long service life can reach more than 15 years.
As to further optimization of the present utility model, described axostylus axostyle is by first axostylus axostyle and second axostylus axostyle is end to end constitutes, and described first axostylus axostyle is made by different coefficient of expansion materials with second axostylus axostyle.By regulating the length of first axostylus axostyle and second axostylus axostyle, the overall expansion coefficient that can make axostylus axostyle is identical with the coefficient of expansion of pipe in the pressure, thus the influence that can compensates the pressure measurement precision be brought.
As to another kind of optimization of the present utility model, be provided with linear bearing between described axostylus axostyle and the contiguous block.Linear bearing can play the effect of firm axostylus axostyle, makes the total anti-seismic performance good.In addition, frictional force was little when linear bearing moved axostylus axostyle vertically, thereby can improve certainty of measurement.
Be provided with the thermometric grating in the described protection sleeve, described thermometric grating links to each other with the optic fibre connector that is arranged on the protection sleeve end by optical fiber.The thermometric grating can be real-time the temperature value with in the pressure sensor pass to the fiber grating analyzer, calculating for temperature-compensating provides temperature required value.
For convenience being connected and guaranteeing its sealing of sensor and Devices to test, the pressure entrance place on the described withstand voltage sleeve is provided with seal nipple, is provided with joint ring between described seal nipple and the withstand voltage sleeve.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of a kind of embodiment of pressure sensor of the present utility model.
Among the figure: 1. wiring terminal, 2. protection sleeve, the 3. moving pulling block of grating; 4. grating is decided pulling block, 5. manages 6. withstand voltage sleeve in the pressure; 7. seal nipple, 8. joint ring, 9. first axostylus axostyle; 10. second axostylus axostyle, 11. linear bearings, 12. pulling block adapters; 13. pressure measurement grating; 14. the thermometric grating, 15. contiguous blocks, 16. pressure entrances.
The specific embodiment
As shown in Figure 1, in the present embodiment, a protection sleeve 2 and a withstand voltage sleeve 6 link together by a contiguous block 15, and this connection can also can connect by other modes by being threaded, but will guarantee sealing.At protection sleeve 2 left ends is a fiber cabling terminal 1, and this connector 1 is used to connect optical fiber, and pressure sensor gained signal is transferred to analytical instrument by optical fiber remote.
Be provided with in the inboard of withstand voltage sleeve 6 and manage 5 in the pressure, pipe 5 one ends are fixed on the contiguous block 15 in the pressure, and the other end can be movable.For easy to process, also can make an integral body to pipe 5 and contiguous block 15 in the pressure.In pressure, be provided with axostylus axostyle in the inner chamber of pipe 5; axostylus axostyle one end is connected with the movable end of pipe 5 in the pressure; the other end passes contiguous block 15 centers and extends in the protection sleeve 2, in order to improve anti-seismic performance and to reduce friction, improve certainty of measurement, between axostylus axostyle and contiguous block 15 linear bearing 11 is set.
The end that axostylus axostyle is positioned at protection sleeve 2 is equipped with the moving pulling block 3 of grating by pulling block adapter 12; connecting on the pulling block 15 position relative with the moving pulling block of grating 3 is provided with grating and decides pulling block 4; this grating is decided to be provided with pressure measurement grating 13 between pulling block 4 and the moving pulling block 3 of grating; pressure measurement grating 13 links to each other by the wiring terminal 1 of optical fiber with protection sleeve 15 ends, goes out with the optical signal transmission that pressure measurement grating 13 is obtained.
Be provided with thermometric grating 14 in the inboard of protection sleeve 2, the position of thermometric grating 14 is not limited to protection sleeve 2 inboards, so long as the temperature that can record in the sensor gets final product.Thermometric grating 14 also links to each other by the wiring terminal 1 of optical fiber with protection sleeve 2 ends, goes out with the optical signal transmission that thermometric grating 14 is obtained.
Be provided with pressure entrance 16 in the end of withstand voltage sleeve 6, this pressure entrance 16 communicates with the space at detected fluid place during use.Install for convenience and the assurance sealing, be provided with a seal nipple 7, be provided with high pressure sealing ring 8 between seal nipple 7 and the withstand voltage sleeve 6 at pressure entrance 16 places of withstand voltage sleeve 6.
Operating principle of the present utility model is: high-pressure fluid is entered by the pressure entrance 16 on the withstand voltage sleeve 6; make pipe 5 outer wall increased pressure in the pressure; high-pressure fluid makes pipe 5 compressions in the pressure; shorten to protection sleeve 2 one sides vertically; pipe 5 drives axostylus axostyle to protection sleeve 2 one lateral movements in the pressure; cause moving pulling block 3 of grating and grating to be decided between the pulling block 4 apart from becoming big; the variation of this distance is pulled in the moving pulling block 3 of grating and grating and decides 13 perception of pressure measurement grating between the pulling block 4; pressure measurement grating 13 is sent to fiber grating analyzer by optical fiber in the mode of optical signal with the variable in distance amount that perceived; analyzer can be analyzed out with optical signal, draws the size of 16 entrance pressure power of pressure entrance.
In order to reduce the influence that variations in temperature is brought certainty of measurement, axostylus axostyle is divided into two sections, be respectively first axostylus axostyle 9 and second axostylus axostyle 10, two sections axostylus axostyles adopt the different material of the coefficient of expansion to make, by regulating the length ratio of two sections axostylus axostyles, can make the overall expansion coefficient of axostylus axostyle identical, when variations in temperature with the coefficient of expansion of pipe 5 in the pressure, the expansion or the contraction of pipe 5 and axostylus axostyle generation same amount in the pressure, thus Temperature Influence is dropped to minimum.At this moment axostylus axostyle also can just need be transferred to analyzer with the temperature value that thermometric grating 14 obtains without separating into two sections, the force value that records is revised according to this temperature value by analyzer.
Claims (5)
1. pressure sensor is characterized in that, comprises a protection sleeve and a withstand voltage sleeve, and described protection sleeve is connected by contiguous block with withstand voltage sleeve; Described withstand voltage sleeve ends is provided with pressure entrance, and the inboard is provided with pipe in the pressure; Be provided with axostylus axostyle in the tube cavity in the described pressure; Described axostylus axostyle one end passes described contiguous block and enters protection sleeve, and is provided with the moving pulling block of grating at this end; The position of the moving pulling block of corresponding described grating is provided with grating and decide pulling block on contiguous block, and described grating moves pulling block and grating decides to be provided with between the pulling block pressure measurement grating, and described pressure measurement grating links to each other with the optic fibre connector that is arranged on the protection sleeve end by optical fiber.
2. pressure sensor according to claim 1 is characterized in that, described axostylus axostyle is by first axostylus axostyle and second axostylus axostyle is end to end constitutes, and described first axostylus axostyle is made by different coefficient of expansion materials with second axostylus axostyle.
3. pressure sensor according to claim 1 is characterized in that, is provided with linear bearing between described axostylus axostyle and the contiguous block.
4. pressure sensor according to claim 1 is characterized in that, is provided with the thermometric grating in the protection sleeve, and described thermometric grating links to each other with the optic fibre connector that is arranged on the protection sleeve end by optical fiber.
5. pressure sensor according to claim 1 is characterized in that, the pressure entrance place on the described withstand voltage sleeve is provided with seal nipple, is provided with joint ring between described seal nipple and the withstand voltage sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201701841U CN201074513Y (en) | 2007-08-14 | 2007-08-14 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201701841U CN201074513Y (en) | 2007-08-14 | 2007-08-14 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074513Y true CN201074513Y (en) | 2008-06-18 |
Family
ID=39519776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201701841U Expired - Lifetime CN201074513Y (en) | 2007-08-14 | 2007-08-14 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074513Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121376A (en) * | 2010-01-11 | 2011-07-13 | 河南理工大学 | Intelligent coal seam gas pressure tester |
| CN104895559A (en) * | 2015-05-25 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Oil-gas well downhole optical fiber temperature and pressure test instrument |
| CN108057722A (en) * | 2017-12-15 | 2018-05-22 | 武汉钢铁有限公司 | A kind of split type draught pressure measuring device |
-
2007
- 2007-08-14 CN CNU2007201701841U patent/CN201074513Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121376A (en) * | 2010-01-11 | 2011-07-13 | 河南理工大学 | Intelligent coal seam gas pressure tester |
| CN102121376B (en) * | 2010-01-11 | 2013-11-27 | 河南理工大学 | Intelligent coal seam gas pressure tester |
| CN104895559A (en) * | 2015-05-25 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Oil-gas well downhole optical fiber temperature and pressure test instrument |
| CN104895559B (en) * | 2015-05-25 | 2017-09-15 | 中国石油集团渤海钻探工程有限公司 | Oil/gas Well downhole optic fiber temperature, pressure tester |
| CN108057722A (en) * | 2017-12-15 | 2018-05-22 | 武汉钢铁有限公司 | A kind of split type draught pressure measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Geokon Instruments (Beijing) Co., Ltd. Assignor: Beijing Jikang Technology Co., Ltd. Contract fulfillment period: 2008.6.18 to 2013.12.31 Contract record no.: 2008110000172 Denomination of utility model: High-temp resisting petroleum downhole dynamic pressure sensor Granted publication date: 20080618 License type: Exclusive license Record date: 20081208 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.6.18 TO 2013.12.31; CHANGE OF CONTRACT Name of requester: JIKANG INSTRUMENT ( BEIJING ) CO., LTD. Effective date: 20081208 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080618 |