CN1014354B - Testing means for operation pressure of safety valve - Google Patents
Testing means for operation pressure of safety valveInfo
- Publication number
- CN1014354B CN1014354B CN88107732A CN88107732A CN1014354B CN 1014354 B CN1014354 B CN 1014354B CN 88107732 A CN88107732 A CN 88107732A CN 88107732 A CN88107732 A CN 88107732A CN 1014354 B CN1014354 B CN 1014354B
- Authority
- CN
- China
- Prior art keywords
- pressure
- mentioned
- safety valve
- valve
- hydraulic jack
- Prior art date
- 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.)
- Expired
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/18—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electric potential is produced or varied upon the application of stress
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/08—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of piezoelectric devices, i.e. electric circuits therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A device for testing the working pressure of a safety valve. It comprises a hydraulic lifter for pulling up a valve rod of a safety valve mounted on a pipe, an electromagnetic valve connected in a pressure oil conduit for the feeding of pressure oil to the hydraulic lifter, a force or load measuring cell for measuring or detecting a load or force exerted on the valve rod, a pressure transducer for measuring a pressure prevailing in the pipe, a hydraulic pressure transducer for measuring a hydraulic pressure in the pressure oil conduit for the feed of pressure oil to the hydraulic lifter or in the hydraulic lifter itself and a device for recording or registering the measured values from the load measuring cell and from the pressure transducer and for calculating a working pressure (response pressure) of the safety valve on the basis of the measured values. This device can save more human power with its simple structure and high precision.
Description
The present invention relates to the device of experimental safe valve working pressure, for example test is used for the device of the main steam safety valve working pressure (cracking pressure) of thermal power plant, atomic power station etc.
Safety valve is designed to work (unlatching) when pipeline reaches the highest allowable working pressure, and safety valve is not opened when equipment runs well.On the other hand, for the function of confirming that safety valve can normally be opened when the highest allowable working pressure, about 70%(that pressure in pipeline reaches the highest allowable working pressure is lower slightly than normal operation pressure) state under, by the hydraulic jack poppet stem, make its unlatching forcibly.And infer according to the relation of the lifting load of this valve rod and loine pressure: reach in the defined scope if promote load, this valve is just opened when the highest allowable working pressure of pipeline.
Below, an example of the means for operation pressure of safety valve test specific procedure of above-mentioned prior art is described in conjunction with Fig. 4.
In the drawings, 2 for being installed in the safety valve on the pipeline 1.Under the pressure in the pipeline 1 reaches certain state, utilize manually operated type pump 4 and hydraulic jack 5 that valve rod 3 is promoted.So people hear the sound when safety valve 2 is opened, read the scale of oil pressure gage 6 of the hydraulic jack 5 of this moment, just can obtain the load of hydraulic jack.This hydraulic jack 5 is installed on the top of valve rod 3 by turnbuckle 7.
Below, another example of prior art is described in conjunction with Fig. 5.
In the drawings, testing means for operation pressure of safety valve 101 is by constituting with the bottom:
Main supporting member 111, its underpart are fixed on the valve gap 04 of tested body with thread connecting mode;
Following assemblying body 103, this assemblying body are fixed on the above-mentioned main supporting member 111;
Last assemblying body 102, this assemblying body can be around being arranged on the main supporting member 111 by slider 112 with being free to slide;
Bellows 109, this bellows airtight shape ground and can on above-below direction, freedom telescopically being connected with following assemblying body 103 with last assemblying body 102;
Position transducer 107, this sensor amount of movement of electrical signal output iron core 108;
Control gear 110, this installs the force signal of position signal, load cell 106 outputs of input position sensor 107 respectively, the pressure signal of the gas sent in bellows 109, and whether the working pressure of judging tested body is in suitable scope.
Its effect is, when charged pressure air in bellows 109, last assemblying body 102 begins to rise, and draw bolt 104 promotes valve rod 03.At this moment, draw bolt 104 is promoted by last assemblying body 102 by load cell 106, and therefore the thrust that is equivalent to poppet stem 03 is on load cell 106, and its force signal is to control gear 110 outputs.On the one hand, flange plate 105 is moved upward together with draw bolt 104, and the iron core 108 that is in contact with it is pushed to the top equally, and this amount of movement is exported to control gear 110 from position transducer 107 as position signal.On the other hand, the pressure in the bellows 109 is exported to control gear 110 by not shown circuit as pressure signal.When the position signal from position transducer 107 reached the value of the complete aperture position of representing determined object-valve, the correlation of above-mentioned force signal of control gear 110 computings and pressure signal judged that whether the working pressure of determined object suits.
In the testing means for operation pressure of safety valve of above-mentioned prior art, exist the following problem that needs solution.Be that the problem that exists in the example of prior art shown in Figure 4 is,, read the oil pressure scale,, need operator's skilled operation so testing precision is low by people's eyesight because detect the action of valve by people's hearing.In addition, because with manually operated type pump supply pressure oil, therefore, except the operator that handle hand pump with carry out also needing a lot of operator the operator of above-mentioned detection, and, owing to be handwork, need long time.
The problem that exists in the example of prior art shown in Figure 5 is, as the means that detect the valve events amount, and use position sensor, therefore difficult flourishing operating accuracy to expectation.That is to say, because the actuating quantity maximum is limited to the 1mm degree, so the mobile position relation to position transducer, iron core, flange plate etc. proposes high required precision, therefore need to eliminate the amount of deflection of mutual loosening, skew of member and member itself etc., carry out accurate firm installation, need light simultaneously, but it is difficult will satisfying these conditions.
As the disclosed testing means for operation pressure of safety valve of patent application GB2062812A, partly constitute by the lifting device that can promote the safety valve valve rod that is installed on the pipeline, the load cell that detects above-mentioned valve phase load, the pressure transducer that detects above-mentioned internal pipe pressure and position transducer etc.In said apparatus, because the use position sensor is as the means that detect the safety valve actuating quantity, the maximum actuation amount of valve is about 1mm, so the relation of the mobile position between each parts is proposed high required precision, amount of deflection that need to eliminate mutual loosening, skew of each parts and member itself waits carries out the firm installation of precision, if can not satisfy these conditions, the then difficult flourishing precision of estimating to expectation.
The present invention proposes in view of the problems referred to above that in the past testing means for operation pressure of safety valve exists, and its purpose is to provide that a kind of structure is light, testing precision is high and maneuverable testing means for operation pressure of safety valve.
Testing means for operation pressure of safety valve of the present invention wherein has:
Hydraulic jack, this jack can promote the valve rod that is installed in the safety valve on the pipeline;
Load cell, the load of the above-mentioned valve rod of this sensor;
Pressure transducer, the above-mentioned pipeline pressure inside of this sensor;
It is characterized in that wherein also having:
Solenoid valve, this solenoid valve are arranged on the stream of above-mentioned hydraulic jack supply pressure oil;
Oil pressure sensor, this sensor is to the stream pressure inside or the above-mentioned hydraulic jack pressure inside of above-mentioned hydraulic jack supply pressure oil;
Arithmetic unit, this device detects oil pressure when being accompanied by the change that action produced of above-mentioned safety valve at above-mentioned oil pressure sensor, close above-mentioned solenoid valve, write down the value of measuring of above-mentioned load cell and above-mentioned pressure transducer simultaneously, and according to the working pressure of the above-mentioned safety valve of these value of measuring computings.
Because the present invention above-mentionedly constitutes like that, so have following effect.
With hydraulic jack oil pressure is risen, the safety valve action is during safety valve work (unlatchings), in hydraulic jack and lead to and produce small oil pressure in the pressure oil path of hydraulic jack and change.Utilizing oil pressure sensor to detect above-mentioned oil pressure change, and block to the hydraulic jack fuel feeding time by solenoid valve, according to the working pressure of the load signal computing safety valve of the pressure signal of pipeline of this moment and load cell, whether judgment task pressure suits.
In the present invention, detect and confirm the action of safety valve, detect the load of valve rod, so the testing precision height, and needn't have certain qualification and just can operate by load cell with oil pressure sensor.By controlling to the hydraulic jack fuel feeding to the electrical signal of solenoid valve output or blocking fuel feeding, therefore do not need manual operation, and can carry out reliably.
The simple declaration of accompanying drawing
Fig. 1 is the explanatory drawing of expression first embodiment of the invention summary.
Fig. 2 is the detail drawing of the testing apparatus II among Fig. 1.
Fig. 3 is the explanatory drawing of expression second embodiment of the invention summary.
Figure 4 shows that the situation of the means for operation pressure of safety valve test of prior art.
Fig. 5 is another routine longitudinal section of prior art.
1-pipeline 2-safety valve
3-valve rod 4-manually operated type pump
5-hydraulic jack 6-oil pressure gage
7-turnbuckle 15-load cell
The 16-hydraulic jack
17,17a-oil pressure sensor 18-solenoid valve
The 19-pressure transducer
The 21-sensor amplifier
The 22-computer
The 24-printer
Figure 1 shows that the summary of first embodiment of the invention.Figure 2 shows that the detailed structure of being surrounded part (testing apparatus) among Fig. 1 by dot and dash line.
In Fig. 1, safety valve 2 is arranged on the pipeline 1, and the valve rod 3 of this safety valve 2 is provided with the testing apparatus II.In the testing apparatus II, bear the counter-force that platform 13 constitutes the outside and bear platform by bearing platform 11, framework 12, hydraulic jack, and have turnbuckle 14, load cell 15 that is connected valve rod 3 tops and the hydraulic jack 16 that is connected with load cell 15.Hydraulic jack bears the counter-force that platform 13 bears hydraulic jack 16.In addition, oil pressure sensor 17 and solenoid valve 18 are arranged on the oil pressure pipe 20 of hydraulic jack 16, by the supply of these solenoid valve 18 control oil.The electrical signal of the electrical signal that sensor amplifier 21 will be converted to by the pressure of pressure transducer 19 detected pipelines 1, the electrical signal of oil pressure sensor 17, load cell 15, the electrical signal that is sent to solenoid valve 18 are changed (curtage), so that input or output to computer 22.And, have the CRT(cathode ray tube (CRT) by making) keyboard 23 work, native system is promptly worked, with the result to CRT or printer 24 outputs.
Fig. 2 is the detail drawing of testing apparatus II.With adjusting the top that nut 31 is screwed into valve rod 3, be screwed into turnbuckle 14 in the outside of this adjustment nut 31.The adjustment bolt 32 of inverted T-shape is inserted the inside of turnbuckle 14.To adjust bolt 32 and insert in the load cell 15, and when the inverted T-shape of adjusting bolt 32 is partly promoted, adjust bolt 32 and contact with turnbuckle 14, turnbuckle 14 is risen, the other end of load cell 15 is connected with hydraulic jack 16.In addition, oil pressure sensor 17 is installed on the oil pressure pipe 20 of hydraulic jack 16, when oil pressure being raise by hydraulic jack, and the oil pressure small variations when this sensor 17 detects the safety valve unlatching.
In said apparatus, open solenoid valve 18, when hydraulic jack 16 fuel feeding, hydraulic jack 16 work, poppet stem 3.During safety valve 2 work (during unlatching), oil pressure sensor 17 detects this action.Like this, computer 22 sends the signal of cutting out solenoid valve 18, simultaneously, by sensor amplifier 21 will this moment load cell 15 load signal and by the signal conversion that the pressure transducer 19 of pipeline 1 the sends line item of going forward side by side.Computer 22 also by the database that enrolls in advance, is obtained the means for operation pressure of safety valve (cracking pressure) during high allowable working pressure of pipeline 1 according to the pressure of the load of above-mentioned load cell 15 and pipeline 1, to CRT and printer 24 outputs.
In the above-described embodiment, needn't bear platform 13 to the hydraulic jack that is installed in the valve top, bear platform 11, framework 12 makes rigidity parts high, that body is big, can realize light.That is to say, oil pressure sensor is installed on the position beyond the valve top gets final product, can realize the light that hydraulic jack bears platform 13, framework 12, bears platform 11.
Below, in conjunction with Fig. 3 the second embodiment of the present invention is described.
In above-mentioned first embodiment, oil pressure sensor is mounted on the pressure oil pipe that leads to hydraulic jack, in contrast, in the present embodiment, as shown in Figure 3, oil pressure sensor 17a is connected with the inside of hydraulic jack 16, to detect this hydraulic jack 16 pressure inside.Other parts of this second embodiment are identical with first embodiment, therefore repeat no more.
Also same in the present embodiment with first embodiment, open solenoid valve 18, when hydraulic jack 16 fuel feeding, the hydraulic jack action, poppet stem 3, safety valve 2 work, at this moment, oil pressure sensor 17a detects the small variations of hydraulic jack 16 pressure inside, detects the action of safety valve 2.
Thus, with identical among first embodiment, when closing solenoid valve 18, the means for operation pressure of safety valve (cracking pressure) when obtaining pipeline 1 and reaching the highest allowable working pressure, and with it to CRT and printer 24 outputs, show and record.
Claims (1)
1, a kind of testing means for operation pressure of safety valve, this device has:
Hydraulic jack, this jack can promote the valve rod that is installed in the safety valve on the pipeline;
Load cell, the load of the above-mentioned valve rod of this sensor;
Pressure transducer, the above-mentioned pipeline pressure inside of this sensor;
It is characterized in that this device also has:
Solenoid valve, this solenoid valve are arranged on the stream of above-mentioned hydraulic jack supply pressure oil;
Oil pressure sensor, this sensor is to the stream pressure inside or the above-mentioned hydraulic jack pressure inside of above-mentioned hydraulic jack supply pressure oil;
Arithmetic unit, this device detects oil pressure when being accompanied by the change that action produced of above-mentioned safety valve at above-mentioned oil pressure sensor, close above-mentioned solenoid valve, write down the value of measuring of above-mentioned load cell and above-mentioned pressure transducer simultaneously, and according to the working pressure of the above-mentioned safety valve of these value of measuring computings.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62282126A JPH01124741A (en) | 1987-11-10 | 1987-11-10 | Testing device for safety valve operating pressure |
| JP282126/87 | 1987-11-10 | ||
| JP254952/88 | 1988-10-12 | ||
| JP63254952A JPH067082B2 (en) | 1988-10-12 | 1988-10-12 | Safety valve operating pressure test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033864A CN1033864A (en) | 1989-07-12 |
| CN1014354B true CN1014354B (en) | 1991-10-16 |
Family
ID=26541939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88107732A Expired CN1014354B (en) | 1987-11-10 | 1988-10-09 | Testing means for operation pressure of safety valve |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR920009022B1 (en) |
| CN (1) | CN1014354B (en) |
| DE (1) | DE3837882A1 (en) |
| FR (1) | FR2622950B1 (en) |
Cited By (1)
| 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 |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4218320A1 (en) * | 1992-06-03 | 1993-12-09 | Siemens Ag | Method and device for testing a valve driven by a medium |
| GB2372087A (en) * | 2001-02-07 | 2002-08-14 | Drallim Ltd | Testing an emergency valve |
| KR100923560B1 (en) * | 2003-01-08 | 2009-10-27 | 한라공조주식회사 | Apparatus for testing load of mode switch knob in car |
| DE102006049706B3 (en) * | 2006-10-18 | 2008-06-19 | Areva Np Gmbh | System for testing the functionality of a valve operated system especially comprises a module with adjustable pressure valves to simulate different pressures and pressure gradients of the system under test |
| JP5237047B2 (en) * | 2008-10-21 | 2013-07-17 | ナブテスコ株式会社 | Attachment of electromagnetic valve testing machine and electromagnetic valve testing machine using the same |
| CN102734528B (en) * | 2012-06-08 | 2013-09-04 | 绍兴文理学院 | Method for intelligently detecting and repairing hydraulic valve chucking failure |
| DE102012014984B4 (en) * | 2012-07-27 | 2015-12-31 | Tsg Technische Service Gesellschaft Mbh | Device for testing the response pressure of a safety valve |
| CN103076167B (en) * | 2013-01-08 | 2014-05-14 | 中国人民解放军国防科学技术大学 | Storage service life acceleration test method for pilot operated safety valve |
| CN105587926B (en) * | 2016-01-28 | 2018-05-04 | 太仓市高泰机械有限公司 | A kind of automatic monitor-type surges safety valve |
| CN109695775B (en) * | 2018-12-27 | 2020-07-31 | 常州诚磊阀门科技有限公司 | Control method and device of valve actuating mechanism |
Family Cites Families (8)
| 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 |
| US4274438A (en) * | 1979-02-21 | 1981-06-23 | Westinghouse Electric Corp. | Method of diagnostic valve testing |
| GB2062812B (en) * | 1979-10-20 | 1984-08-30 | Furmanite Int Ltd | Valve testing |
| DE3042951C2 (en) * | 1980-11-14 | 1986-04-10 | Brown Boveri Reaktor GmbH, 6800 Mannheim | Method for controlling a valve on pressurized systems |
| JPS5943280A (en) * | 1982-09-06 | 1984-03-10 | Kobe Steel Ltd | Valve actuator |
| GB2139737B (en) * | 1983-04-29 | 1986-07-02 | Furmanite Int Ltd | Valve testing system |
| GB8321751D0 (en) * | 1983-08-12 | 1983-09-14 | Greenwood Moore Ltd | Valve testing |
| FR2567643B1 (en) * | 1984-07-13 | 1988-03-25 | Framatome Sa | METHOD AND DEVICE FOR TESTING A PILOT CONTROLLED SAFETY VALVE |
-
1988
- 1988-10-09 CN CN88107732A patent/CN1014354B/en not_active Expired
- 1988-11-04 FR FR8814430A patent/FR2622950B1/en not_active Expired - Lifetime
- 1988-11-08 DE DE3837882A patent/DE3837882A1/en not_active Ceased
- 1988-11-10 KR KR1019880014769A patent/KR920009022B1/en not_active IP Right Cessation
Cited By (1)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2622950B1 (en) | 1992-12-31 |
| KR920009022B1 (en) | 1992-10-12 |
| DE3837882A1 (en) | 1989-05-24 |
| FR2622950A1 (en) | 1989-05-12 |
| KR890008552A (en) | 1989-07-12 |
| CN1033864A (en) | 1989-07-12 |
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| C10 | Entry into substantive examination | ||
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
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