CN103499439A - Safety valve online detector - Google Patents
Safety valve online detector Download PDFInfo
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- CN103499439A CN103499439A CN201310471684.9A CN201310471684A CN103499439A CN 103499439 A CN103499439 A CN 103499439A CN 201310471684 A CN201310471684 A CN 201310471684A CN 103499439 A CN103499439 A CN 103499439A
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Abstract
The invention relates to a safety valve online detector. The safety valve online detector comprises a pressure transmitter, a displacement detection unit and a data processing unit, wherein the pressure transmitter is connected with a pressure detection opening of a to-be-detected device and is used for continuously detecting the inner pressure of the to-be-detected device in real time and outputting a pressure sensing signal; the displacement detection unit is used for detecting the opening height of a valve rod of a safety valve on the to-be-detected device in real time and outputting a displacement sensing signal; the data processing unit is respectively and electrically connected with the pressure transmitter and the displacement detection unit and comprises a data collection module and a CPU (Central Processing Unit), the data collection module is used for respectively collecting the pressure sensing signal and the displacement sensing signal and generating corresponding digital signals, and the CPU is used for generating and outputting a detection result including set pressure, discharge pressure, reseating pressure and opening height according to the corresponding digital signals. According to the safety valve online detector disclosed by the invention, indexes of the set pressure, the discharge pressure, the reseating pressure, the opening height and the like of the safety valve can be online detected and output, convenient and fast effects are realized, and the detection accuracy is increased.
Description
Technical field
The present invention relates to detector for safety valve, more particularly, relate to a kind of on-line detecting instrument for safety valve.
Background technology
When being detected online, safety valve usually adopts two kinds of methods in correlation technique:
Method 1, in the low pressure situation, utilize outside auxiliary power to help valve opening, complete the simulation test of high pressure.But, due to the technical conditions restriction, this method only can complete the set-pressure test.
Method 2, directly the safety valve on equipment is boosted, until open, return seat.Record the technical parameter of safety valve by the tensimeter on equipment, but this method only can realize the test of set-pressure and blow pressure, and the data of test be artificial observation, record, trackability is poor, and accurate not.
According to the GB/T12243-2005 requirement, the performance technical indicator of safety valve comprises: set-pressure, blowdown presssure, blow pressure, Lift etc.Therefore, prior art only can realize the technical indicators such as set-pressure, sealing property test, blow pressure, can not carry out the test of Lift, blowdown presssure technical indicator.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of improved on-line detecting instrument for safety valve is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of on-line detecting instrument for safety valve, comprising:
For be connected the pressure unit that detects Devices to test internal pressure output pressure sensing signal with real-time continuous with the pressure detection mouth of Devices to test;
Displacement detecting unit for safety valve valve rod Lift output displacement sensing signal on real-time detection Devices to test;
The data processing unit be electrically connected with described pressure unit, displacement detecting unit respectively;
Described data processing unit comprises data acquisition module and central processing unit, described data acquisition module gathers respectively from the described pressure-sensing signal of described pressure unit with from the described displacement sensing signal of displacement detecting unit and generate corresponding digital signal, described central processing unit is according to the digital signal of described pressure-sensing signal and displacement sensing signal, and generation output packet are containing the testing result of set-pressure, blowdown presssure, blow pressure and Lift.
Preferably, described displacement detecting unit comprises with the valve rod end face of safety valve over against the laser displacement sensor arranged.
Preferably, described data acquisition module comprises data collecting card.
Preferably, described central processing unit is according to the digital signal of pressure-sensing signal and displacement sensing signal, generates the pressure curve of the relation for characterizing pressure and time, and for the high curve of opening of the relation that characterizes Lift and time; This on-line detecting instrument for safety valve also comprises for showing described pressure curve, the described display device of opening high curve, wherein said pressure curve, describedly opens high curve and shows in same coordinate.
Preferably, described display device comprises display screen or display.
Preferably, described data processing unit also comprises storage unit.
Preferably, described on-line detecting instrument for safety valve also comprises for supporting the bracing or strutting arrangement of described laser displacement sensor.
Preferably, described bracing or strutting arrangement comprises support.
Implement on-line detecting instrument for safety valve of the present invention, have following beneficial effect: on-line detecting instrument for safety valve of the present invention can detect online and the technical indicators such as the set-pressure of output safety valve, blowdown presssure, blow pressure, Lift, it is convenient to facilitate, and has improved accuracy of detection.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the application schematic diagram of the on-line detecting instrument for safety valve in the embodiment of the present invention;
Fig. 2 be on-line detecting instrument for safety valve of the present invention output pressure curve, open high curve synoptic diagram.
Embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, on-line detecting instrument for safety valve in a preferred embodiment of the invention comprises for the pressure detection mouth 11 with Devices to test 10 and is connected the pressure unit 20 that detects Devices to test 10 internal pressures output pressure sensing signal with real-time continuous, for detecting in real time the displacement detecting unit 30 of safety valve 12 valve rod 13 Lifts on Devices to test 10 output displacement sensing signal, for the bracing or strutting arrangement 40 of bracing displacement detecting unit 30 and the data processing unit 50 that is electrically connected with pressure unit 20, displacement detecting unit 30 respectively.
In certain embodiments, pressure unit 20 is sent to data processing unit 50 by the pressure-sensing signal.Height detection unit comprises that with valve rod 13 end faces of safety valve 12, over against the laser displacement sensor arranged, its signal of displacement sensing by valve rod 13 is transferred to data processing unit 50.Understandable, height detection unit also can be other contact displacement detecting sensors that contact with valve rod 13.
Bracing or strutting arrangement 40 is support or strut etc., and displacement detecting unit 30 is located on bracing or strutting arrangement 40, with guarantee its be fixed on valve rod 13 directly over.
Further, data processing unit 50 comprises data acquisition module, central processing unit and storage unit.Data acquisition module comprises data collecting card, and it gathers respectively from the pressure-sensing signal of pressure unit 20 with from the displacement sensing signal of displacement detecting unit 30, and generates corresponding digital signal.
As shown in Figure 2, in certain embodiments, central processing unit is according to the digital signal of pressure-sensing signal, displacement sensing signal, generate the pressure curve 21 of the relation for characterizing pressure and time, in figure, for dashed curve, mean, and, for the high curve 31 of opening of the relation that characterizes Lift and time, in figure, for block curve, mean.Preferably, pressure curve 21 and Kai Gao curve 31 are created on same coordinate.In coordinate, transverse axis means that time t, two longitudinal axis mean respectively pressure P and Kai Gao H.
This data processing unit 50 also comprises for showing pressure curve 21, open the display device (not shown) of high curve 31, display device can be display screen or display, by the corresponding program software of installing on data processing unit 50, pressure curve 21 and Kai Gao curve 31 are shown on display device simultaneously.
Before detecting, the Lift of safety valve 12 is zero, upwards flex point while on opening high curve 31, finding valve rod 13 to start to raise, time point corresponding to this flex point is T1, and the point that time point T1 corresponds on pressure curve 21 is A, and force value corresponding to some A is the set-pressure of safety valve 12.
When safety valve 12 reaches the stable emissions state, open on high curve 31 and there will be the height platform, the point that its correspondence is opened on high axle H is D, D point correspondence open the Lift that high numerical value is safety valve 12.
Find out in the height platform time interval on high curve 31 and correspond to the peak on pressure curve 21, its point that corresponds on pressure curve 21 is B, and force value corresponding to some B is the blowdown presssure of safety valve 12.
Find after safety valve 12 action time point T2 corresponding to flex point when opening high value and coming back to zero on opening high curve 31, the point that time point T2 corresponds on pressure curve 21 is C, puts the blow pressure that force value corresponding to C is safety valve 12.
Understandably, above-mentioned each technical characterictic can combination in any be used and unrestricted.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (8)
1. an on-line detecting instrument for safety valve, is characterized in that, comprising:
For be connected the pressure unit (20) that detects Devices to test (10) internal pressure output pressure sensing signal with real-time continuous with the pressure detection mouth (11) of Devices to test (10);
For detecting in real time the displacement detecting unit (30) of upper safety valve (12) valve rod (13) Lift of Devices to test (10) output displacement sensing signal;
The data processing unit (50) be electrically connected with described pressure unit (20), displacement detecting unit (30) respectively;
Described data processing unit (50) comprises data acquisition module and central processing unit, described data acquisition module gathers respectively from the described pressure-sensing signal of described pressure unit (20) with from the described displacement sensing signal of displacement detecting unit (30) and generate corresponding digital signal, described central processing unit is according to the digital signal of described pressure-sensing signal and displacement sensing signal, and generation output packet are containing the testing result of set-pressure, blowdown presssure, blow pressure and Lift.
2. on-line detecting instrument for safety valve according to claim 1, is characterized in that, described displacement detecting unit (30) comprises with valve rod (13) end face of safety valve (12) over against the laser displacement sensor arranged.
3. on-line detecting instrument for safety valve according to claim 1, is characterized in that, described data acquisition module comprises data collecting card.
4. on-line detecting instrument for safety valve according to claim 1, it is characterized in that, described central processing unit is according to the digital signal of pressure-sensing signal and displacement sensing signal, generate the pressure curve (21) of the relation for characterizing pressure and time, and open high curve (31) for the relation that characterizes Lift and time; Described data processing unit (50) also comprises that, for showing described pressure curve (21), the described display device of opening high curve (31), wherein said pressure curve (21), the described high curve (31) of opening show in same coordinate.
5. on-line detecting instrument for safety valve according to claim 4, is characterized in that, described display device comprises display screen or display.
6. on-line detecting instrument for safety valve according to claim 4, is characterized in that, described data processing unit (50) also comprises storage unit.
7. on-line detecting instrument for safety valve according to claim 2, is characterized in that, described on-line detecting instrument for safety valve also comprises the bracing or strutting arrangement (40) for supporting described laser displacement sensor.
8. on-line detecting instrument for safety valve according to claim 7, is characterized in that, described bracing or strutting arrangement (40) comprises support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471684.9A CN103499439A (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471684.9A CN103499439A (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
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| CN103499439A true CN103499439A (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310471684.9A Pending CN103499439A (en) | 2013-10-11 | 2013-10-11 | Safety valve online detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801626A (en) * | 2018-09-11 | 2018-11-13 | 大连理工大学 | A kind of test device and test method for spring loaded safety valve dynamic characteristic |
Citations (6)
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| US4428223A (en) * | 1978-05-16 | 1984-01-31 | Furmanite International Limited | Apparatus for periodically testing the operation of safety valves |
| CN1776387A (en) * | 2005-11-29 | 2006-05-24 | 广东捷勋安全阀阀门检修有限公司 | Automatic calibrating instrument for safety valve |
| CN101368883A (en) * | 2008-09-16 | 2009-02-18 | 江南大学 | On-line check method for safety valve |
| CN202057301U (en) * | 2010-12-13 | 2011-11-30 | 中国船舶重工集团公司第七○三研究所 | Laser measuring device for opening height of safety valve |
| CN103076134A (en) * | 2012-12-31 | 2013-05-01 | 苏州维赛克阀门检测技术有限公司 | On-line detection system for safety valve |
| CN203572636U (en) * | 2013-10-11 | 2014-04-30 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
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2013
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428223A (en) * | 1978-05-16 | 1984-01-31 | Furmanite International Limited | Apparatus for periodically testing the operation of safety valves |
| US4428223B1 (en) * | 1978-05-16 | 1989-07-04 | ||
| CN1776387A (en) * | 2005-11-29 | 2006-05-24 | 广东捷勋安全阀阀门检修有限公司 | Automatic calibrating instrument for safety valve |
| CN101368883A (en) * | 2008-09-16 | 2009-02-18 | 江南大学 | On-line check method for safety valve |
| CN202057301U (en) * | 2010-12-13 | 2011-11-30 | 中国船舶重工集团公司第七○三研究所 | Laser measuring device for opening height of safety valve |
| CN103076134A (en) * | 2012-12-31 | 2013-05-01 | 苏州维赛克阀门检测技术有限公司 | On-line detection system for safety valve |
| CN203572636U (en) * | 2013-10-11 | 2014-04-30 | 深圳市特种设备安全检验研究院 | Safety valve online detector |
Non-Patent Citations (3)
| Title |
|---|
| 孙琦: ""安全阀整定压力新的测量法"", 《中国特种设备安全》 * |
| 王国法 等: "《高端液压支架及先进制造技术》", 31 July 2010, 煤炭工业出版社 * |
| 黄光禹 等: "《GB/T 12242-2005 压力释放装置 性能试验规范》", 21 February 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801626A (en) * | 2018-09-11 | 2018-11-13 | 大连理工大学 | A kind of test device and test method for spring loaded safety valve dynamic characteristic |
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Application publication date: 20140108 |