CN103076134A - On-line detection system for safety valve - Google Patents
On-line detection system for safety valve Download PDFInfo
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- CN103076134A CN103076134A CN2012105904450A CN201210590445A CN103076134A CN 103076134 A CN103076134 A CN 103076134A CN 2012105904450 A CN2012105904450 A CN 2012105904450A CN 201210590445 A CN201210590445 A CN 201210590445A CN 103076134 A CN103076134 A CN 103076134A
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- displacement transducer
- data
- valve rod
- detecting instrument
- pressure detecting
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Abstract
The invention discloses an on-line detection system for a safety valve. The on-line detection system is characterized by comprising a displacement sensor and a pressure detector, wherein the displacement sensor is hollowly sleeved on a valve rod; the pressure detector is internally provided with a data acquisition system, a data calculation system and a data display system; the data acquisition system is connected with the data calculation system through a plurality of feedback lines and data transmission lines; the data display system is connected with the data calculation system through feedback lines; and a displacement sensor feedback end interface is arranged on the pressure detector and is connected with the displacement sensor through a lead. Through arranging the displacement sensor on the valve rod or in an oil cylinder and presetting a reference scale line on the valve rod for the displacement sensor, slight displacement of the valve rod can be accurately detected by the displacement sensor, so accurate detection is realized.
Description
Technical field
The present invention relates to a kind of safety valve on-line monitoring system, the safety valve on-line monitoring system that especially a kind of accuracy of detection is high.
Background technology
Valve is in actual use procedure, when the pressure in the valve body surpasses the pretightning force of hold down gag medi-spring on the valve body, air in pipeline pressure will the jack-up spool, extreme pressure when for this reason just needing monitoring to back down spool, gas backs down spool in the valve body by listening attentively to and be mainly at present manually, tweeting sound during Leakage Gas, adopt this mode, can't accurately detect the spool release pressure, and there is security risk, when adopting machine that this pressure is detected, general sensor can't detect the fluctuation that spool backs down valve rod moment to be changed, and the pressure that namely hold down gag medi-spring pretightning force is in when mutually refusing to budge the stage above the force value at that moment slightly backed down of spool and the spool can't accurately detect.
Summary of the invention
Technical matters to be solved by this invention provides a kind of safety valve on-line monitoring system, the instantaneous pressure in the time of can accurately detecting spool and back down valve rod.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of safety valve on-line monitoring system, its innovative point is to comprise: a kind of displacement transducer, described displacement transducer empty set is on valve rod, be set with successively from top to bottom lower gasket, displacement transducer, oil cylinder, Upper gasket and back tightening nut on the described valve rod, described valve rod top offset sensor initial position is provided with one with reference to scale mark, and described oil cylinder links to each other with oil pump by flexible pipe; One pressure detecting instrument, described pressure detecting instrument is built-in with data acquisition system (DAS), data computing system and data presentation system, link to each other with data line by some feedback lines between described data acquisition system (DAS) and the data computing system, described data presentation system links to each other with the data computing system by feedback line, be provided with displacement transducer feedback end interface on the described pressure detecting instrument, described displacement transducer feedback end interface links to each other with displacement transducer by wire.
Further, described displacement transducer empty set is on valve rod or be arranged in the oil cylinder.
Further, described pressure detecting instrument is arranged in the casing, has slight clearance between described casing and pressure detecting instrument.
The invention has the advantages that; By displacement transducer is set on valve rod or in the oil cylinder, arrange one with reference to scale mark at valve rod in advance displacement transducer, upwards there is a little a displacement to be accurately detected by displacement transducer thereby work as valve rod, thereby realizes accurately detecting.
For easy for installation can be with the displacement transducer empty set at valve rod, but have like this trouble of follow-up maintenance, therefore displacement transducer can be placed oil cylinder, thereby until displacement transducer uses scraps, all not need deliberately to safeguard.For ease of carrying, pressure detecting instrument is arranged in the casing, and guarantees village's slight clearance between the two, reduce and jolt on the impact of its precision.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention being done detailed explanation of a step.
Fig. 1 is the structural representation of a kind of safety valve on-line monitoring system of the present invention.
Fig. 2 is the structural representation of pressure detecting instrument in a kind of safety valve on-line monitoring system of the present invention.
Embodiment
A kind of safety valve on-line monitoring system illustrated in figures 1 and 2 comprises displacement transducer 1, valve rod 2, lower gasket 3, oil cylinder 4, Upper gasket 5, back tightening nut 6, oil pump 7, pressure detecting instrument 8, data acquisition system (DAS) 9, data computing system 10, data presentation system 11, displacement transducer feedback end interface 12.
A kind of safety valve on-line monitoring system of the present invention mainly comprises displacement transducer 1 and pressure detecting instrument 8, by being arranged in the oil cylinder 4 or the displacement transducer 1 of empty set on valve rod 2 links to each other with pressure detecting instrument feedback end interface 12, analyze thereby transfer data to pressure detecting instrument 8, obtain required release pressure.
Whether be set with successively from top to bottom lower gasket 3, displacement transducer 1, oil cylinder 4, Upper gasket 5 and back tightening nut 6 on the valve rod 2, valve rod top offset sensor initial position is provided with one with reference to scale mark, utilize displacement transducer Real-Time Monitoring valve rod to rise.Oil cylinder 4 links to each other with oil pump 7 by flexible pipe, compresses a series of parts on the valve rod by back tightening nut 6, is convenient to accurate detection.
Pressure detecting instrument 8 is built-in with data acquisition system (DAS) 9, data computing system 10 and data presentation system 11, link to each other with data line by some feedback lines between data acquisition system (DAS) 9 and the data computing system 10, data presentation system 11 links to each other with the data computing system by feedback line.
Displacement transducer 1 is by being preset in more in advance the line of reference on the valve rod 2, as long as thereby detect the rise slight variation of the displacement cause of valve rod, the data transmission that displacement transducer 1 will detect this moment obtains accurate release pressure value this moment to pressure detecting instrument 8.
Claims (3)
1. relief valve online detecting system is characterized in that comprising:
A kind of displacement transducer, described displacement transducer empty set is on valve rod, be set with successively from top to bottom lower gasket, displacement transducer, oil cylinder, Upper gasket and back tightening nut on the described valve rod, described valve rod top offset sensor initial position is provided with one with reference to scale mark, and described oil cylinder links to each other with oil pump by flexible pipe;
One pressure detecting instrument, described pressure detecting instrument is built-in with data acquisition system (DAS), data computing system and data presentation system, link to each other with data line by some feedback lines between described data acquisition system (DAS) and the data computing system, described data presentation system links to each other with the data computing system by feedback line, be provided with displacement transducer feedback end interface on the described pressure detecting instrument, described displacement transducer feedback end interface links to each other with displacement transducer by wire.
2. a kind of safety valve on-line monitoring system according to claim 1 is characterized in that: described displacement transducer empty set is on valve rod or be arranged in the oil cylinder.
3. a kind of safety valve on-line monitoring system according to claim 2, it is characterized in that: described pressure detecting instrument is arranged in the casing, has slight clearance between described casing and pressure detecting instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105904450A CN103076134A (en) | 2012-12-31 | 2012-12-31 | On-line detection system for safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105904450A CN103076134A (en) | 2012-12-31 | 2012-12-31 | On-line detection system for safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103076134A true CN103076134A (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105904450A Pending CN103076134A (en) | 2012-12-31 | 2012-12-31 | On-line detection system for safety valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN103076134A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438807A (en) * | 2013-08-19 | 2013-12-11 | 南京理工大学 | High-pressure pilot-operated type pneumatic electromagnetic-valve valve element displacement measurement device and method |
| CN103499439A (en) * | 2013-10-11 | 2014-01-08 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
| CN113739069A (en) * | 2021-09-23 | 2021-12-03 | 凯泰（滁州）流体控制有限公司 | Method and device for realizing online leakage real-time monitoring of safety valve pipeline of liquefied hydrocarbon spherical tank water cut-off device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002025149A1 (en) * | 2000-08-30 | 2002-03-28 | Chung Jung Engineering Co., Ltd. | Unpowered shut-off valve using spool |
| CN2748899Y (en) * | 2004-11-08 | 2005-12-28 | 徐权 | Safety valve on-line detector |
| CN200996895Y (en) * | 2006-12-31 | 2007-12-26 | 徐权 | Safety-valve online inspecter |
| CN101216128A (en) * | 2008-01-16 | 2008-07-09 | 江南大学 | Security valve and its on-line calibration technology |
| CN101738324A (en) * | 2008-11-19 | 2010-06-16 | 华北电力大学（保定） | Pressure vessel relief valve online detecting system |
-
2012
- 2012-12-31 CN CN2012105904450A patent/CN103076134A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002025149A1 (en) * | 2000-08-30 | 2002-03-28 | Chung Jung Engineering Co., Ltd. | Unpowered shut-off valve using spool |
| CN2748899Y (en) * | 2004-11-08 | 2005-12-28 | 徐权 | Safety valve on-line detector |
| CN200996895Y (en) * | 2006-12-31 | 2007-12-26 | 徐权 | Safety-valve online inspecter |
| CN101216128A (en) * | 2008-01-16 | 2008-07-09 | 江南大学 | Security valve and its on-line calibration technology |
| CN101738324A (en) * | 2008-11-19 | 2010-06-16 | 华北电力大学（保定） | Pressure vessel relief valve online detecting system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438807A (en) * | 2013-08-19 | 2013-12-11 | 南京理工大学 | High-pressure pilot-operated type pneumatic electromagnetic-valve valve element displacement measurement device and method |
| CN103499439A (en) * | 2013-10-11 | 2014-01-08 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
| CN113739069A (en) * | 2021-09-23 | 2021-12-03 | 凯泰（滁州）流体控制有限公司 | Method and device for realizing online leakage real-time monitoring of safety valve pipeline of liquefied hydrocarbon spherical tank water cut-off device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130501 |