CN1033864A - Testing means for operation pressure of safety valve - Google Patents

Testing means for operation pressure of safety valve Download PDF

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Publication number
CN1033864A
CN1033864A CN88107732A CN88107732A CN1033864A CN 1033864 A CN1033864 A CN 1033864A CN 88107732 A CN88107732 A CN 88107732A CN 88107732 A CN88107732 A CN 88107732A CN 1033864 A CN1033864 A CN 1033864A
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CN
China
Prior art keywords
pressure
mentioned
safety valve
hydraulic jack
valve
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.)
Withdrawn
Application number
CN88107732A
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Chinese (zh)
Other versions
CN1014354B (en
Inventor
户仓道男
野村刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP62282126A external-priority patent/JPH01124741A/en
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority claimed from JP63254952A external-priority patent/JPH067082B2/en
Publication of CN1033864A publication Critical patent/CN1033864A/en
Publication of CN1014354B publication Critical patent/CN1014354B/en
Expired legal-status Critical Current

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    • 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

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  • 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 kind of testing means for operation pressure of safety valve, this device has: can promote the safety valve valve rod hydraulic jack, be arranged on solenoid valve on the stream of hydraulic jack supply pressure oil, detect internal pipe pressure pressure transducer, detect to the value of measuring of oil pressure sensor, record load cell and the pressure transducer of the stream pressure inside of hydraulic jack supply pressure oil and hydraulic jack internal pressure and according to the arithmetic unit of the above-mentioned means for operation pressure of safety valve of these value of measuring computings.Testing means for operation pressure of safety valve of the present invention can make manual work laborsaving, and is not only simple in structure but also testing precision is high.

Description

Testing means for operation pressure of safety valve
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;
Draw bolt 104, this bolt are at the central position of above-mentioned member, and its underpart is fixed on the valve rod 03 of tested body, and its top is bearing on the assemblying body 102 by load cell 106;
Iron core 108, because the extension of bellows 109 is when making draw bolt 104 get on valve rod 03 lifting, this iron core contacts and follows it with flange plate 105 and moves;
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, therefore the use position sensor is difficult to reach the operating accuracy of 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.
The objective of the invention is to: for solving above-mentioned problem, provide a kind of and make above-mentioned manual work laborsaving, simultaneously, the testing means for operation pressure of safety valve that not only structure is light but also testing precision is high.
The feature of testing means for operation pressure of safety valve provided by the invention is to have with the bottom as the means that solve above-mentioned problem:
Hydraulic jack, this jack can promote the valve rod that is installed in the safety valve on the pipeline;
Solenoid valve, this solenoid valve are arranged on the stream of above-mentioned hydraulic jack supply pressure oil;
Load cell, the load of the above-mentioned valve rod of this sensor;
Pressure in the pressure transducer, the above-mentioned pipeline of this sensor;
Oil pressure sensor, this sensor is to the stream of above-mentioned hydraulic jack supply pressure oil or the pressure inside of above-mentioned jack;
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 (2)

1, a kind of testing means for operation pressure of safety valve is characterized in that having with the bottom:
Hydraulic jack, this jack can promote the valve rod that is installed in the safety valve on the pipeline;
Solenoid valve, this solenoid valve are arranged on the stream of above-mentioned hydraulic jack supply pressure oil;
Load cell, the load of the above-mentioned valve rod of this sensor;
Pressure transducer, the above-mentioned pipeline pressure inside of this sensor;
Oil pressure sensor, this sensor is to the stream 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.
2, a kind of testing means for operation pressure of safety valve is characterized in that having with the bottom:
Hydraulic jack, this jack can promote the valve rod that is installed in the safety valve on the pipeline;
Solenoid valve, this solenoid valve are arranged on the stream of above-mentioned hydraulic jack supply pressure oil;
Load cell, this sensor is surveyed the load of above-mentioned valve rod;
Pressure transducer, the above-mentioned pipeline pressure inside of this sensor;
Oil pressure sensor, the above-mentioned hydraulic jack pressure inside of this sensor;
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.
CN88107732A 1987-11-10 1988-10-09 Testing means for operation pressure of safety valve Expired CN1014354B (en)

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 true CN1033864A (en) 1989-07-12
CN1014354B CN1014354B (en) 1991-10-16

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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)

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KR (1) KR920009022B1 (en)
CN (1) CN1014354B (en)
DE (1) DE3837882A1 (en)
FR (1) FR2622950B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101726407B (en) * 2008-10-21 2011-12-28 纳博特斯克株式会社 Installation accessory of a solenoid valve testing machine and the solenoid valve testing machine using the accessories
CN102734528A (en) * 2012-06-08 2012-10-17 绍兴文理学院 Method for intelligently detecting and repairing hydraulic valve chucking failure
CN103076167A (en) * 2013-01-08 2013-05-01 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
CN105587926A (en) * 2016-01-28 2016-05-18 太仓市高泰机械有限公司 Automatic monitoring type hydraulic safety valve
CN109695775A (en) * 2018-12-27 2019-04-30 常州诚磊阀门科技有限公司 The control method and device of valve

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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
CN101368883B (en) * 2008-09-16 2010-06-16 江南大学 On-line check method for safety valve
DE102012014984B4 (en) * 2012-07-27 2015-12-31 Tsg Technische Service Gesellschaft Mbh Device for testing the response pressure of a safety valve

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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
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101726407B (en) * 2008-10-21 2011-12-28 纳博特斯克株式会社 Installation accessory of a solenoid valve testing machine and the solenoid valve testing machine using the accessories
CN102734528A (en) * 2012-06-08 2012-10-17 绍兴文理学院 Method for intelligently detecting and repairing hydraulic valve chucking failure
CN102734528B (en) * 2012-06-08 2013-09-04 绍兴文理学院 Method for intelligently detecting and repairing hydraulic valve chucking failure
CN103076167A (en) * 2013-01-08 2013-05-01 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
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
CN105587926A (en) * 2016-01-28 2016-05-18 太仓市高泰机械有限公司 Automatic monitoring type hydraulic 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
CN109695775A (en) * 2018-12-27 2019-04-30 常州诚磊阀门科技有限公司 The control method and device of 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

Also Published As

Publication number Publication date
FR2622950B1 (en) 1992-12-31
KR920009022B1 (en) 1992-10-12
DE3837882A1 (en) 1989-05-24
CN1014354B (en) 1991-10-16
FR2622950A1 (en) 1989-05-12
KR890008552A (en) 1989-07-12

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