CN106872154B - A kind of Low lift safety valve discharge capacity test macro and test method - Google Patents
A kind of Low lift safety valve discharge capacity test macro and test method Download PDFInfo
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- CN106872154B CN106872154B CN201710041450.9A CN201710041450A CN106872154B CN 106872154 B CN106872154 B CN 106872154B CN 201710041450 A CN201710041450 A CN 201710041450A CN 106872154 B CN106872154 B CN 106872154B
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- G01M13/00—Testing of machine parts
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Abstract
The present invention relates to a kind of Low lift safety valve discharge capacity test macro and test methods.Wherein test macro includes air accumulator, water tank, test chamber, catch basin and the weighing system that the water weight entered in the catch basin is measured, the branch pipe for installing tested valve is communicated on the test chamber, valve opening level detector is equipped at the tested valve, the gas outlet of the air accumulator is connected to the water tank, the water tank water outlet is connected to the test chamber, the water outlet of the tested valve is connected to the catch basin, in the air accumulator gas enter in the water tank by the water continuous force feed to the test chamber in the water tank until the water is discharged by the water outlet of the tested valve.The present invention is directed to Low lift safety valve, using incompressible water as test(ing) medium, has ensured all water for flowing through tested valve, the present invention can the discharge capacity to tested valve accurately measured.
Description
Technical field
The invention belongs to safety valve testing technical field, be specifically related to a kind of Low lift safety valve discharge capacity test macro with
And test method.
Background technique
Safety valve is a kind of valve using medium active force automatic open close, and the final protection usually as bearing device fills
It sets.Unlatching performance, the emission performance of safety valve are the principal elements for having to consider when selecting safety valve, at this stage safety valve
The quality of energy mainly tests to obtain by experimental rig.Scientific and reasonable design experiment device is that accurately to test safe valve performance good
Bad premise, the prior art are directed to the accurate measuring technique of Low lift safety valve emission performance not yet.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of Low lift safety valve discharge capacity test macro and test sides
Method.
In order to achieve the object of the present invention, the invention adopts the following technical scheme:
A kind of Low lift safety valve discharge capacity test macro, including air accumulator, water tank, test chamber, catch basin and right
The weighing system measured into the water weight in the catch basin is communicated with for installing tested valve on the test chamber
Branch pipe, valve opening level detector is equipped at the tested valve, the gas outlet of the air accumulator is connected to the water tank,
The water tank water outlet is connected to the test chamber, and the water outlet of the tested valve is connected to the catch basin, the storage
In gas tank gas enter in the water tank by the water continuous force feed to the test chamber in the water tank until described
Water is discharged by the water outlet of the tested valve.
Further, the weighing system is electronic scale, and the valve opening level detector is by being mounted on tested valve
Displacement sensor on valve rod is constituted, and the data that institute's displacement sensors and the electronic scale measure are acquired by corresponding data
Unit is acquired.
Further, the connecting pipeline of the air accumulator and water tank is equipped with switch valve one, the water tank and test
The connecting pipeline of container is equipped with switch valve two.
Further, which further includes the air compressor of compressed air being filled with into the air accumulator and to described
The connecting line of the water tank of injection water in water tank, the air accumulator and air compressor is equipped with switch valve three and pressure gauge
One, the connecting line of the water tank and water tank is equipped with water pump and switch valve four.
Further, pressure gauge two, safety valve one and blowdown valve one be installed, on the water tank on the air accumulator
Pressure gauge three, safety valve two, blowdown valve two and liquidometer are installed, the test chamber is equipped with pressure gauge four and safety
Valve three.
Further, the switch valve one, switch valve two, switch valve three and switch valve four be automatic switch valve and/or
Manual switch valve.
A kind of test method based on the Low lift safety valve discharge capacity test macro, comprising the following steps:
S1, the starting air compressor, open the switch valve three, turn off the switch valve one, compressed air by the road into
After entering air accumulator until pressure reaches needed for test in air accumulator, the air compressor and switch valve three are closed；
S2, valve two is turned off the switch, turns on the switch valve four, open water pump, until after water level reaches needed for test in water tank,
Close the water pump and switch valve four；
S3, the switch valve one, switch valve two are opened simultaneously, the medium water in the water tank is by entering in water tank
Compressed air is pressed into the test chamber until the water is overflowed by the way that the tested valve is stable；It is acquired by the data single
Member is acquired the data measured of displacement sensor described in test process and electronic scale, and is counted by terminal
The discharge capacity of tested valve is obtained according to processing.
Further, it is P1 that the compressed air, which acts on the pressure of water in water tank, and hydraulic pressure is P2 in the water tank,
Hydraulic pressure is P3, the P1 > P2=P3 in the test chamber.
The beneficial effects of the present invention are:
(1) in the use of the present invention, the water in the water tank constantly enters in test chamber, and in the pressure of compressed air
Power effect under, the water in the water tank, which keeps, to be pressed into test chamber, at this time the hydraulic pressure in test chamber gradually on
It rising until being overflowed from the tested valve, the water of spilling enters in the catch basin and is weighed in real time by electronic scale, according to
The discharge capacity Q of tested valve can be calculated in weighing results.The present invention is especially using incompressible water as test(ing) medium, test
Medium is pushed in test chamber by gas source in air accumulator, has ensured all water of the test(ing) medium for flowing through tested valve, it is ensured that
The accuracy of Low lift safety valve discharge capacity measurement.
(2) displacement sensor is equipped at the valve rod of tested valve of the present invention, it can be accurately by the displacement sensor
Can measurement tested valve reach the pace of change of full-gear and tested valve Lift after opening, and judge tested valve with this
Action sensitivity whether meet design standard.In addition, combining displacement sensor can be to tested valve by the pressure gauge four
Cracking pressure tested, i.e., when pressure gauge four show test chamber in pressure reach tested valve unlatching design pressure
When, the detection data of institute's displacement sensors is observed, judges whether the tested valve is normally-open with this.
(3) measurement data of heretofore described displacement sensor and electronic scale is adopted by data acquisition unit
Collection, it is ensured that the accuracy of measurement and measuring accuracy of this system operation.The data acquisition unit is according to the unlatching of tested valve
The water that the every unlatching of tested valve is once discharged can be calculated in the weight of the water restored alleged by discharge number and electronic scale
Weight, that is, discharge capacity Q.It should be noted that needing to allow when surveying discharge capacity because the drain time of Low lift safety valve is very short
The tested valve stable emissions regular hour (drain time >=30s when usually testing), so accurate precision of test result is higher, this
Invention provides completely new system and method for Low lift safety valve performance test.
(4) when being tested for the property using the tested valve discharge capacity test macro to tested valve: ensure that the P1 is greater than P2,
It just can guarantee that water energy is constantly pressed into the test chamber in this way.The wherein mode that gas pressure P1 increases in the water tank
Are as follows: it is filled with compressed gas in air accumulator constantly in the water tank.Liquidometer is equipped in the water tank, it is desirable that in water tank
Water level is maintained within setting range, and ensures P2=P3, and during the test and after the completion of test, water is not less than in water tank
Setting range lower limit guarantees that water tank, pipeline and test chamber are completely filled with water always during the experiment after water tank
State, it is ensured that the accuracy of discharge capacity test.Test method of the present invention is simple and easily operated, and test result is accurate, precision
It is high.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Attached meaning marked in the figure is as follows:
Two 13- safety valve of 10- air accumulator 11- one 12- pressure gauge of switch valve, one 14- blowdown valve one
Three 23- safety valve of 20- water tank 21- two 22- pressure gauge of switch valve, two 24- blowdown valve two
Four 33- safety valve three of 25- liquidometer 30- test chamber 31- branch pipe 32- pressure gauge
40- tested valve 50- displacement sensor 60- catch basin 70- air compressor
Three 72- pressure gauge of 71- switch valve, one 80- water tank 81- water pump
Four 90- electronic scale of 82- switch valve
Specific embodiment
More specific detail is made to technical solution of the present invention below with reference to embodiment:
Embodiment 1
As shown in Figure 1, the test macro include air accumulator 10, water tank 20, test chamber 30, catch basin 60 and into
Enter the weighing system that the water weight in the catch basin 60 measures, is communicated on the test chamber 30 tested for installing
The branch pipe 31 of valve 40, is equipped with valve opening level detector at the tested valve 40, the gas outlet of the air accumulator 10 with it is described
Water tank 20 is connected to, and 20 water outlet of water tank is connected to the test chamber 30, the water outlet connection of the tested valve 40
To the catch basin 60, gas enters in the water tank 20 and constantly presses the water in the water tank 20 in the air accumulator 10
Send in the test chamber 30 until the water is discharged by the water outlet of the tested valve 40.The weighing system is electronics
Scale 90, the displacement sensor 50 on valve rod of the valve opening level detector by being mounted on tested valve 40 are constituted, institute's rheme
The data that displacement sensor 50 and the electronic scale 90 measure are acquired by corresponding data acquisition unit 100.
In the use of the present invention, the water in the water tank 20 constantly enters in test chamber 30, and in compressed air
Under pressure effect, the water in the water tank 20, which keeps, to be pressed into test chamber 30, at this time the water in test chamber 30
Pressure is gradually increasing until overflowing from the tested valve 40, and the water of spilling enters in the catch basin 60 and carried out by electronic scale 90
Weighing in real time, the discharge capacity Q of tested valve 40 can be calculated according to weighing results.The present invention is especially made using incompressible water
For test(ing) medium, test(ing) medium is pushed in test chamber 30 by gas source in air accumulator 10, has ensured the examination for flowing through tested valve 40
Test all water of medium, it is ensured that the accuracy of Low lift safety valve discharge capacity measurement.
Displacement sensor 50 is equipped at the valve rod of tested valve of the present invention, it can be accurately by the displacement sensor 50
Can measurement tested valve 40 reach the pace of change of 40 Lift of full-gear and tested valve after opening, and judge quilt with this
Whether the action sensitivity of side valve 40 meets design standard.In addition, combining displacement sensor 50 can by the pressure gauge 4 32
It is tested with the cracking pressure to tested valve 40, i.e., when the pressure in the test chamber 30 that pressure gauge 4 32 is shown reaches tested
When the design pressure that valve 40 is opened, the detection data of institute's displacement sensors 50 is observed, is to judge the tested valve 40 with this
It is no normally-open.
The measurement data of heretofore described displacement sensor 50 and electronic scale 90 is carried out by data acquisition unit 100
Acquisition, it is ensured that the accuracy of measurement and measuring accuracy of this system operation.The data acquisition unit 100 is according to tested valve 40
Unlatching discharge number and electronic scale 90 alleged by the weight of water that restores, can be calculated tested valve 40 it is every open it is primary
The weight for the water being discharged i.e. discharge capacity Q.It should be noted that because the drain time of Low lift safety valve is very short, the row of survey
It needs to allow when amount tested valve stable emissions regular hour when test (usually drain time >=30s), such test result is accurate
Precision is higher, and the present invention provides completely new system and method for Low lift safety valve performance test.
The connecting pipeline of the air accumulator 10 and water tank 20 is equipped with switch valve 1, and the water tank 20 holds with test
The connecting pipeline of device 30 is equipped with switch valve 2 21.
The system further includes the air compressor 70 of compressed air being filled with into the air accumulator 10 and to the water storage
The connecting line of the water tank 80 of injection water in tank 20, the air accumulator 10 and air compressor 70 be equipped with switch valve 3 71 and
The connecting line of pressure gauge 1, the water tank 80 and water tank 20 is equipped with water pump 81 and switch valve 4 82.
Pressure gauge 2 12, safety valve 1 and blowdown valve 1, the water tank 20 are installed on the air accumulator 10
On pressure gauge 3 22, safety valve 2 23 and blowdown valve 2 24 be installed, the test chamber 30 be equipped with pressure gauge 4 32 with
And safety valve 3 33.
The switch valve 1, switch valve 2 21, switch valve 3 71 and switch valve 4 82 are automatic switch valve and/or hand
Dynamic switch valve can need to arrange that one of or both of which is arranged according to testing, so that control mode is with more in test process
Kind selectivity.
Embodiment 2
Test method based on above-mentioned test macro, comprising the following steps:
S1, the starting air compressor 70, open the switch valve 3 71, turn off the switch valve 1, compressed air warp
After pipeline enters air accumulator 10 until pressure reaches needed for test in air accumulator 10, the air compressor 70 and switch are closed
Valve 3 71；
S2, valve 2 21 is turned off the switch, turns on the switch valve 4 82, open water pump 81, until water level reaches examination in water tank 20
After needed for testing, the water pump 81 and switch valve 4 82 are closed；
S3, the switch valve 1, switch valve 2 21 are opened simultaneously, the medium water in the water tank 20 is by entering water storage
Compressed air in tank 20 is pressed into the test chamber 30 until the water is overflowed by the tested valve 40；Pass through the number
It is acquired according to data measured of the acquisition unit 100 to displacement sensor 50 described in test process and electronic scale 90, and by
Terminal carries out data processing and obtains the discharge capacity of tested valve 40.
When being tested for the property using the tested valve discharge capacity test macro to tested valve: ensuring the compressed air effect
It is that P1 is greater than hydraulic pressure P2 in water tank in the pressure of water in water tank, just can guarantee that water energy is constantly pressed into the test and holds in this way
In device 30.The wherein mode that gas pressure P1 increases in the water tank 20 are as follows: be filled with compressed gas in air accumulator 10 constantly
In the water tank 20.Liquidometer 25 is equipped in the water tank 20, it is desirable that in water tank 20 water level be maintained at setting range it
It is interior, and ensure P2=P3, during the test and after the completion of test, water is not less than setting range lower limit in water tank 20, guarantees
Pipeline and test chamber 30 are the state for being completely filled with water always during the experiment after water tank 20, water tank, it is ensured that discharge capacity
The accuracy of test.Test method of the present invention is simple and easily operated, and test result is accurate, precision is high.
Claims (3)
1. a kind of test method of Low lift safety valve discharge capacity test macro, it is characterised in that:
The test method includes Low lift safety valve discharge capacity test macro, and the Low lift safety valve discharge capacity test macro includes storage
Gas tank (10), water tank (20), test chamber (30), catch basin (60) and to enter the catch basin (60) in water weight
The weighing system measured is communicated with the branch pipe (31) for installing tested valve (40) on the test chamber (30), described
Valve opening level detector is equipped at tested valve (40), the gas outlet and the water tank (20) of the air accumulator (10) are even
Logical, water tank (20) water outlet is connected to the test chamber (30), and the water outlet of the tested valve (40) is connected to institute
State catch basin (60), the interior gas of the air accumulator (10) enter the water tank (20) in by the water in the water tank (20) not
Until the water is discharged by the water outlet of the tested valve (40) in disconnected force feed to the test chamber (30)；
The connecting pipeline of the air accumulator (10) and water tank (20) is equipped with switch valve one (11), the water tank (20) and examination
The connecting pipeline for testing container (30) is equipped with switch valve two (21)；
The Low lift safety valve discharge capacity test macro further includes that the air pressure of compressed air is filled with into the air accumulator (10)
Contracting machine (70) and to the water tank (80) injected in the water tank (20), the air accumulator (10) and air compressor (70)
Connecting line be equipped with switch valve three (71) and pressure gauge one (72), the connecting tube of the water tank (80) and water tank (20)
Road is equipped with water pump (81) and switch valve four (82)；
The weighing system is electronic scale (90), and the valve opening level detector is by being mounted on the valve rod of tested valve (40)
Displacement sensor (50) constitute, the data that institute's displacement sensors (50) and the electronic scale (90) measure by counting accordingly
It is acquired according to acquisition unit (100)；
The test method further includes following operating procedure:
S1, the starting air compressor (70), open the switch valve three (71), turn off the switch valve one (11), compressed air
After entering air accumulator (10) until pressure reaches needed for test in air accumulator (10) by the road, the air compressor (70) are closed
And switch valve three (71)；
S2, valve two (21) is turned off the switch, turns on the switch valve four (82), opened water pump (81), until water level reaches in water tank (20)
To after needed for test, the water pump (81) and switch valve four (82) are closed；
S3, the switch valve one (11), switch valve two (21) are opened simultaneously, the medium water in the water tank (20) is stored up by entering
Compressed air in water pot (20) is pressed into the test chamber (30) until the water overflows by the way that the tested valve (40) are stable
Out；Survey by the data acquisition unit (100) to displacement sensor described in test process (50) and electronic scale (90)
It obtains data to be acquired, and data processing is carried out by terminal and obtains the discharge capacity of tested valve (40)；
The pressure that the compressed air acts on water in water tank is P1, and the interior hydraulic pressure of the water tank (20) is P2, the test
Container (30) interior hydraulic pressure is P3, the P1 > P2=P3.
2. test method as described in claim 1, it is characterised in that: be equipped with pressure gauge two on the air accumulator (10)
(12), safety valve one (13) and blowdown valve one (14) are equipped with pressure gauge three (22), safety valve two on the water tank (20)
(23), blowdown valve two (24) and liquidometer (25), the test chamber (30) are equipped with pressure gauge four (32) and safety valve
Three (33).
3. test method as described in claim 1, it is characterised in that: the switch valve one (11), switch valve two (21), switch
Valve three (71) and switch valve four (82) are automatic switch valve and/or manual switch valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710041450.9A CN106872154B (en) | 2017-01-20 | 2017-01-20 | A kind of Low lift safety valve discharge capacity test macro and test method |
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| CN201710041450.9A CN106872154B (en) | 2017-01-20 | 2017-01-20 | A kind of Low lift safety valve discharge capacity test macro and test method |
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| CN106872154B true CN106872154B (en) | 2019-09-03 |
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| CN108514768A (en) * | 2018-03-30 | 2018-09-11 | 株洲时代新材料科技股份有限公司 | A kind of filter feed system and feed process |
| CN108760271B (en) * | 2018-06-19 | 2020-05-05 | 中国船舶重工集团公司第七一九研究所 | Safety valve opening and closing pressure testing device and method for simulating actual working conditions |
| CN109084972B (en) * | 2018-07-26 | 2019-08-09 | 大连理工大学 | A kind of test device and test method for safety valve valve disc lift |
| CN113945376B (en) * | 2021-10-28 | 2022-06-28 | 大连理工大学 | Device and method for testing dynamic performance of pilot-operated steam release isolation valve for nuclear power |
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| JPS5999005A (en) * | 1982-11-29 | 1984-06-07 | Toshiba Corp | Bypass valve test device in turbine bypass system |
| CN100416253C (en) * | 2004-11-11 | 2008-09-03 | 西安交通大学 | Method and device for microscale mazy cell passage manufacture and hydraulic performance test |
| CN203298937U (en) * | 2013-05-20 | 2013-11-20 | 苏州锦鹏机电设备制造有限公司 | Valve test pressure source |
| CN105547678A (en) * | 2016-01-07 | 2016-05-04 | 江苏大学 | Silencer overpressure resistance test apparatus |
| CN106053038B (en) * | 2016-06-12 | 2019-04-09 | 上海发电设备成套设计研究院有限责任公司 | A kind of experimental rig and test method of gas liquid two purpose test Methods of Safety Valve Discharge Capacity |
| CN106289747B (en) * | 2016-08-25 | 2019-01-29 | 中国核动力研究设计院 | Water and gas dual-purpose safety valve cold conditions comprehensive performance testing device |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Applicant after: Hefei General Machinery Research Institute Co., Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Applicant before: Hefei Universal Machinery Inst. |
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