CN2054165U - On-line detector for safety valve - Google Patents
On-line detector for safety valve Download PDFInfo
- Publication number
- CN2054165U CN2054165U CN 89208448 CN89208448U CN2054165U CN 2054165 U CN2054165 U CN 2054165U CN 89208448 CN89208448 CN 89208448 CN 89208448 U CN89208448 U CN 89208448U CN 2054165 U CN2054165 U CN 2054165U
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- safety valve
- utility
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- 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.)
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model provides an on-line detector for safety valves, which can carry out on-line performance detection and one-line operating parameters detection for a safety valve with few seconds on equipment without the condition of stopping. The utility model can also carry out on-line regulation for the safety valve which is unqualified at scene, the utility model can measure and record pressure for jumping up and getting back of the safety valve, and the displacement of a valve rod and the medium pressure of the system of a place where the safety valve is positioned can be measured and recorded. The utility model is provided with a computer control system, so the utility model can collect data, parametric computations can be carried out, and further, the utility model can prompt operators how to adjust, and the accuracy and the work efficiency of regulating processes are improved. The utility model is a portable testing apparatus.
Description
What the utility model was related is a kind of on-line detector of safety valve, specifically, this detector can only just can carry out the mensuration of on-line performance detection and running parameter to safety valve with the time in several seconds under the state that does not stop, also can carry out on-the-spot online setting, be particularly suitable for various welding safety valve underproof safety valve.
Safety valve is one of vitals of chemical plant, and the quality of safety valve performance is directly connected to economic benefits such as the output value, profit of the safe operation of whole chemical plant and enterprise.If the safety valve operational failure does not reset after not discharging or discharge when system overloading, device will be forced to stop, and directly affects economic benefit of enterprises, harm personnel's production safety, even destroy a whole set of chemical plant.Therefore, the duty of safety valve being carried out regular detection is very important.At present, when detecting safety valve, generally all need safety valve removed to move on the check-out console to carry out, i.e. offline inspection.This detection method not only need be carried out under dead ship condition, and labour intensity is big, and inefficiency is often higher when the set pressure that mixes up under cold conditions is put on the loop.If be the welding valve, can't carry out off-line check.Some country adopts electronic logger to test, but needs deal with data by hand, calculate loaded down with trivial details, inefficiency, the needs of incompatibility modern chemical industry device on-line testing.
The purpose of this utility model is the on-line detector that proposes a kind of safety valve.This instrument can carry out online detection to the duty of safety valve at the scene, and does not disturb the operation in technology loop.This detector can be measured the release pressure with the record security valve, blow pressure, the system media pressure of displacement of valve rod amount and safety valve site.After safety valve was opened, in case valve has leakage after can not normally resetting or reset, this on-line detector can also help safety valve forced resetting and sealing.The more important thing is that this is exactly the actual required set pressure of safety valve in hot set pressure of being regulated down.
The on-off action of safety valve is to rely on the pressure medium variation and the tight power of spring of its entrance point that spool is opened automatically, automatically close, when pressure medium is elevated to lift that it produces when bigger than spring force, spool overcomes spring force and opens automatically, the unnecessary medium of releasing is when pressure medium is reduced to safety value, again because the effect of spring force, spool is closed automatically, and the process of releasing stops.The utility model is according to the principle of work of safety valve, when hot repair or adjustment safety valve, artificial provide an additional force identical with the pressure medium direction in the safety valve outside, when the summation of pressure medium and this additional force can just overcome initial tension of spring, spool can automatic unlatching.Both made in off-line state, when providing an additional force upwards to overcome initial tension of spring by the outside separately, spool also can be opened automatically.According to known additional force size, spool area, just can obtain the additonal pressure size easily, and then the release pressure of computationally secure valve.
The utility model is made up of three parts, i.e. mechanical clamp unit, electronic unit, hydraulic power unit.The effect of its mechanical clamp is the application of force environment that forms compelling force, it with safety valve valve rod--spool is connected.Electronic unit system is made up of pocket computer, pressure transducer, force transducer and displacement transducer, main data acquisition, data processing and the system's operation control and management of being responsible in the test process, wherein force transducer and pressure sensing all have built-in preposition amplification.Hydraulic power unit is used for producing the valve rod lifting force and returns seat power (if necessary), provides power source by the pneumatic type manual hydraulic device.These three big parts are interconnected into a safety valve test system mutually by hydraulic pipe and some cables.
Below in conjunction with accompanying drawing the safety valve testing instrument is described further.
Accompanying drawing is the safety valve test system synoptic diagram.
1. mechanical clamp 2. guide rod
3. displacement transducer 4. electronic unit
5. hydraulic power unit 6. pressure transducer
7. process system 8. regulating ring
9. safety valve 10. collar nuts to be measured
11. safety lever 12. setting nuts
13. force transducer 14. hard closing oil cylinders
15. lift cylinder
As shown in the figure, mechanical clamp is installed in the top of safety valve to be measured, and its design load is divided into 2kN and two kinds of specifications of 20kN, and the operation of system, the collection of data, processing come control and management by pocket computer.Hydraulic power unit utilizes hand oil pump can produce the valve rod lifting force to the hydraulic pressure that accumulator stores up to 22MPa.Accumulator provides 0--15MPa continuously adjustable hydraulic pressure fan-out capability by reduction valve, is interconnected into the test integral body of a safety valve mutually with two long cables of 10 meters.
During test, tested safety valve 9 is placed on the pipeline 7 in technology loop, open the total power switch of electronic unit 4, press the ON key of PC--1500A computing machine then, program brings into operation immediately.At first carry out man-machine conversation, carry out the setting of instrument running status.After this, according to the information that shows, select corresponding mechanical clamp 1 for use, and be installed in lift cylinder 15, hard closing oil cylinder 14, force transducer 13 on the axostylus axostyle successively, choose suitable collar nut 12 then, above-mentioned parts be connected on the valve rod 11 of safety valve, adjustment axle 2 and valve rod 11 to after the neutrality, can be with the mechanical clamp positioning and locking, last connecting duct and cable.
In sum, the utility model can use the time in several seconds to carry out on-line performance detection and running parameter detection to safety valve in the situation of shutdownvoltage, also can carry out the online setting in scene to underproof safety valve, computer control system is equipped with and, can collect data, carry out calculation of parameter, and further how alert regulates, and has greatly improved accuracy and the operating efficiency of adjustment process. Be one and be applicable to petrochemical equipment and even all on-the-spot portable instruments that needs of safety valve that makes.
Claims (3)
1, a kind of on-line detecting instrument for safety valve, by the mechanical clamp unit 1., 5. 4. electronic unit form with hydraulic power unit, it is characterized in that mechanical clamp is connected with tested safety valve, forms the application of force environment of compelling force; Hydraulic power unit produces the valve rod lifting force and returns seat power; The service data collection of total system, processing are finished by computing machine.
2, on-line detecting instrument for safety valve according to claim 1 is characterized in that its hydraulic power unit and hard closing oil cylinder
And lift cylinder
Be connected with some hydraulic pipes, provide power source by pneumatic or manual hydraulic device.
3, on-line detecting instrument for safety valve according to claim 1, the electronic unit that it is characterized in that it and the pressure transducer that is connected in the safety valve position 6., the force transducer 2. gone up of guide rod
3. be connected by cable with the displacement transducer on the mechanical clamp, wherein force transducer and pressure transducer all have built-in prime amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208448 CN2054165U (en) | 1989-06-28 | 1989-06-28 | On-line detector for safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208448 CN2054165U (en) | 1989-06-28 | 1989-06-28 | On-line detector for safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2054165U true CN2054165U (en) | 1990-03-07 |
Family
ID=4865134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89208448 Withdrawn CN2054165U (en) | 1989-06-28 | 1989-06-28 | On-line detector for safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2054165U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368883B (en) * | 2008-09-16 | 2010-06-16 | 江南大学 | On-line check method for safety valve |
| CN102266632A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Self-checking method and system for safety valve and anesthesia machine |
| CN105043744A (en) * | 2015-08-14 | 2015-11-11 | 太仓源凯汽车配件有限公司 | Performance test instrument of intake air bypass valve and using method thereof |
| CN105424351A (en) * | 2015-12-21 | 2016-03-23 | 桂林电子科技大学 | System and method for detecting key parameters of large-power vibration valve |
| CN106246854A (en) * | 2016-08-24 | 2016-12-21 | 四川科路控制工程有限公司 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
| CN106439130A (en) * | 2016-11-17 | 2017-02-22 | 宋新建 | Pilot operated safety valve and inspection device thereof |
| CN106625320A (en) * | 2016-11-10 | 2017-05-10 | 安徽皖拓自动化有限公司 | Safety valve online detection auxiliary fixture and use method thereof |
| CN107605823A (en) * | 2017-08-24 | 2018-01-19 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring safety valve debugging apparatus |
| CN112781850A (en) * | 2020-12-31 | 2021-05-11 | 深圳市中车业成实业有限公司 | Method and device for adjusting and detecting guide cover core valve of oil pressure shock absorber |
-
1989
- 1989-06-28 CN CN 89208448 patent/CN2054165U/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368883B (en) * | 2008-09-16 | 2010-06-16 | 江南大学 | On-line check method for safety valve |
| CN102266632A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Self-checking method and system for safety valve and anesthesia machine |
| CN105043744A (en) * | 2015-08-14 | 2015-11-11 | 太仓源凯汽车配件有限公司 | Performance test instrument of intake air bypass valve and using method thereof |
| CN105424351A (en) * | 2015-12-21 | 2016-03-23 | 桂林电子科技大学 | System and method for detecting key parameters of large-power vibration valve |
| CN106246854A (en) * | 2016-08-24 | 2016-12-21 | 四川科路控制工程有限公司 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
| CN106625320A (en) * | 2016-11-10 | 2017-05-10 | 安徽皖拓自动化有限公司 | Safety valve online detection auxiliary fixture and use method thereof |
| CN106439130A (en) * | 2016-11-17 | 2017-02-22 | 宋新建 | Pilot operated safety valve and inspection device thereof |
| CN106439130B (en) * | 2016-11-17 | 2020-02-04 | 宋新建 | Inspection device for pilot operated safety valve |
| CN107605823A (en) * | 2017-08-24 | 2018-01-19 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring safety valve debugging apparatus |
| CN112781850A (en) * | 2020-12-31 | 2021-05-11 | 深圳市中车业成实业有限公司 | Method and device for adjusting and detecting guide cover core valve of oil pressure shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |