CN109596339A - Safety valve type approval test automatic control system and method - Google Patents
Safety valve type approval test automatic control system and method Download PDFInfo
- Publication number
- CN109596339A CN109596339A CN201910022335.6A CN201910022335A CN109596339A CN 109596339 A CN109596339 A CN 109596339A CN 201910022335 A CN201910022335 A CN 201910022335A CN 109596339 A CN109596339 A CN 109596339A
- Authority
- CN
- China
- Prior art keywords
- pressure
- test
- safety valve
- pipeline
- storage container
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 193
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 99
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims description 57
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fluid Mechanics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of safety valve type approval test automatic control system and method, safety valve type approval test automatic control system includes control unit, test chamber, the first storage container, air inlet boosting pipeline, at least one tonifying Qi pressure stabilizing pipeline and first pressure detection unit；Air inlet boosting pipeline is connected between the first storage container and test chamber；Tonifying Qi pressure stabilizing pipeline is connected between the first storage container and test chamber；First pressure detection unit is mounted on test chamber；Control unit and air inlet boosting pipeline, tonifying Qi pressure stabilizing pipeline and first pressure detection unit communication connection, control air inlet boosting pipeline opening and closing, and control the opening and closing of tonifying Qi pressure stabilizing pipeline.The present invention realizes the automation control of safety valve type approval test automatic control system, measurement by setting control unit；Adding tonifying Qi pressure stabilizing pipeline is test chamber tonifying Qi, meets the requirement for needing a large amount of tonifying Qi after safety valve is opened, maintains the pressure of test chamber to stablize, improve the accuracy of safety valve type approval test.
Description
Technical field
The present invention relates to safety valve technical field more particularly to a kind of safety valve type approval test automatic control system and sides
Method.
Background technique
Safety valve is the safety attachment of special equipment, according to the requirement of national special safety equipment technical specification: safety valve
Manufactory's Ying Jinhang " safety valve type approval test " before manufacturing safety valve can produce after type approval test is qualified, put into city
?.
The process of safety valve type approval test is general are as follows: generates power device-power source storage device (storage container)-and surveys
Amount control device-type approval test test chamber.
The characteristics of test process of safety valve type approval test, is: before experimental test starts, to meet test measurement precision
It is required that, it is specified that type approval test the test chamber rate of rise slowly (the national Specification rate of rise is no more than 0.01MPa/
S), air inflow is small；Safety valve reaches set-pressure, and safety valve is opened, and safety valve is largely vented, steady when to ensure safety valve discharge
It is scheduled under certain discharge pressure, needs a large amount of tonifying Qi, it is especially safe to ensure that test macro completes the test of various parameters
The test of valve discharge amount.
The test condition requirement of safety valve discharge amount: discharge pressure is stable, safety valve valve rod Lift is stable, safety valve
Emission flow is stablized.To meet this test condition, it would be desirable to which, when safety valve is opened, system rapidly, can be mended largely
Fill test(ing) medium, it is ensured that safety valve discharge process realizes stable discharge, accurate to ensure to test.
Safety valve requires supplementation with a large amount of test(ing) medium to unlatching discharge process before opening, and valve is stable to ensure safety
Discharge.But due to the performance of existing weaponry and equipment technology, one of key equipment of type approval test device " regulating valve " difficult to realize one
Step, primary realize adjust the requirement that air compensation meets safety valve discharge.Therefore, it is necessary to repeatedly successively adjust, while also needing
Have the needs that experience abundant enough is just able to satisfy test.
The characteristics of safety valve discharge process is summarized as follows: flow is big after flow system flow is small before safety valve is opened, unlatching is discharged,
The safety valve open stage of test process, which needs to supplement a large amount of test(ing) medium (less than in 1 second) rapidly, can just meet the requirements.
Currently, the operation of existing apparatus is all manually operated, artificially due to system equipment technology feature and limitation
Influence factor is larger, causes test result not objective enough, and the degree of automation is not high, can not achieve automatic control, the reason is as follows that:
The flow very little of regulating valve medium is flowed through, such as aperture 2% or so when subject safety valve is not opened with reference to Fig. 1.
After subject safety valve is opened, need a large amount of tonifying Qi, regulating valve needs to open from lesser aperture greatly to biggish aperture, aperture it is big
Depending on the size for neglecting subject safety valve exhaust capacity.Since regulating valve is difficult the discharge capacity of accurate match subject safety valve, test
Container will cause the pressure oscillation of test chamber because of the mismatch of air inflow and capacity, and it is steady to be difficult to realize pressure.Meanwhile
Due to the tonifying Qi of regulating valve, test(ing) medium ceaselessly flows to test chamber from storage container, and test(ing) medium flow direction test is held
The flow of device is larger, and storage container pressure is caused to drastically reduce, in this way, the adjusting aperture of regulating valve will not only consider test chamber
On the one hand the decline of pressure it is also contemplated that the pressure of storage container drastically reduces, that is, will guarantee the discharge for being tested safety valve
Capacity, on the other hand it is also contemplated that because storage container pressure reduction needs to increase the aperture of regulating valve to guarantee regulating valve flow
Stablize.Test chamber, storage container pressure all sharply decline, however, the capacity (air demand of regulating valve) of subject safety valve
It is constant.In this way, the matching that regulating valve gas supply capacity is discharged with subject safety valve is with regard to particularly difficult.In addition, due to gas medium
Compressibility, when subject safety valve discharge gas medium and enter test chamber through regulating valve gas medium between in quantity
When upper unbalanced, the pressure index that system is shown has certain hysteresis quality, brings certain difficulty for accurate adjustment.
For these reasons, the safety valve type approval test of manually operated can not achieve automation control, and people at present
Test result can be made not objective enough for influence factor, the reproducibility of test result is poor.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of safety valve type approval test automatic operation control realized
Safety valve type approval test automatic control system and method.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of safety valve type approval test automatic control
System, including control unit, for connecting the subject test chamber of safety valve, the first storage container, air inlet boosting pipeline, at least
One tonifying Qi pressure stabilizing pipeline and first pressure detection unit；
The air inlet boosting pipeline is connected between first storage container and test chamber, and first storage is held
The test(ing) medium of device storage supplies the test chamber；The tonifying Qi pressure stabilizing pipeline is connected to first storage container and test
It is the test chamber tonifying Qi pressure stabilizing between container；
The first pressure detection unit is mounted on the test chamber, detects the pressure change of the test chamber simultaneously
The first pressure variable signal that will test is sent to described control unit；
Described control unit and air inlet boosting pipeline, tonifying Qi pressure stabilizing pipeline and the communication of first pressure detection unit connect
It connects, controls the air inlet boosting pipeline opening and closing, and the tonifying Qi pressure stabilizing pipeline is controlled according to the first pressure variable signal and is opened
It closes.
Preferably, the air inlet boosting pipeline includes first be connected between first storage container and test chamber
Pipeline, the first regulating valve being arranged in the first pipe and the first differential pressure flowmeter；Described control unit and described first
Regulating valve communication connection controls the aperture and opening and closing of first regulating valve；
The tonifying Qi pressure stabilizing pipeline includes the second pipe being connected between first storage container and test chamber, sets
Set the second regulating valve and the second differential pressure flowmeter on the second pipe；Described control unit and second regulating valve are logical
News connection, controls the aperture and opening and closing of second regulating valve.
Preferably, first differential pressure flowmeter includes the first differential pressure transmitter of multichannel；
Second differential pressure flowmeter includes the second differential pressure transmitter of multichannel.
Preferably, the safety valve type approval test automatic control system further includes the second storage container, is connected to described
Tonifying Qi pipeline between two storage containers and the first storage container is mounted in first storage container to detect described first
The second pressure detection unit of the pressure change of storage container；
The second pressure detection unit and described control unit communication connection, the second pressure variable signal that will test
It is sent to described control unit；
Described control unit and the tonifying Qi pipeline communication connection control institute according to the second pressure variable signal received
State the opening and closing of tonifying Qi pipeline.
Preferably, the tonifying Qi pipeline includes the third being connected between second storage container and the first storage container
Pipeline, the third regulating valve being arranged on the third pipeline；
Described control unit and the third regulating valve communication connection, control the aperture and opening and closing of the third regulating valve.
Preferably, the pressure of second storage container is higher than the pressure of first storage container, and second storage
Deposit pressure ratio≤4 between container and first storage container.
Preferably, the safety valve type approval test automatic control system further includes dynamic force generating unit, is connected to the power
Third pipeline between generator and the second storage container, the shut-off valve being arranged on the 4th pipeline.
Preferably, the safety valve type approval test automatic control system further includes connection subject safety valve and detects subject peace
The valve rod Lift of full valve opens high tester；Described control unit and it is described open high tester communication connection, described in reception
That opens high tester transmission opens high RST.
The present invention also provides a kind of safety valve type approval test autocontrol methods, using safety valve described in any of the above item
Type approval test automatic control system, the safety valve type approval test autocontrol method the following steps are included:
S1, control unit issue instruction and open air inlet boosting pipeline, and the test(ing) medium of the first storage container is made to flow to test
In container, and the rate of rise of Control experiment container is no more than 0.01MPa/s；
After S2, the test chamber pressure rise to set-pressure, subject safety valve open with preset discharge pressure into
Row exhaust；
S3, described control unit issue instruction and open tonifying Qi pressure stabilizing pipeline, make the test(ing) medium of first storage container
It is supplemented to the test chamber by the tonifying Qi pressure stabilizing pipeline, the relatively stable of the test chamber pressure is maintained, makes to be tested
The capacity and air inflow of safety valve balance；
S4, stablize in the pressure of the test chamber in the preset discharge pressure, be tested the unlatching of safety valve valve rod
It is highly stable in setting value, described control unit obtains the pressure that first pressure detection unit detects on the test chamber
The flow value of value, the Lift value of subject safety valve valve rod and air inlet boosting pipeline completes the pattern examination of subject safety valve
It tests.
Preferably, it in step S2, opens the valve rod Lift of high tester detection subject safety valve and what be will test opens
High RST is sent to described control unit；In step s3, described control unit issues instruction according to the high RST of opening received
Open tonifying Qi pressure stabilizing pipeline.
Preferably, in step S3, described control unit is according to the second pressure detection unit in first storage container
The first pressure variable signal detected issues instruction and opens tonifying Qi pipeline, holds first storage of the second storage container
Device tonifying Qi maintains the relatively stable of the first storage container pressure.
Beneficial effects of the present invention: the automatic of safety valve type approval test automatic control system is realized by setting control unit
Change control, measurement；Being additionally arranged tonifying Qi pressure stabilizing pipeline is test chamber tonifying Qi, and meeting after safety valve is opened needs wanting for a large amount of tonifying Qi
It asks, while the pressure of test chamber being maintained to stablize, improve the accuracy of safety valve type approval test.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is safety valve type approval test flow diagram in the prior art；
Fig. 2 is the connection block diagram of the safety valve type approval test automatic control system of one embodiment of the invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Fig. 2, the safety valve type approval test automatic control system of one embodiment of the invention, it may include control unit
10, test chamber 20, the first storage container 31, air inlet boosting pipeline 40, at least one tonifying Qi pressure stabilizing pipeline 50 and the first pressure
Power detection unit 61.
Test chamber 20 is for connecting subject safety valve 1, and gas supply is to subject safety valve 1 to carry out type approval test；Subject peace
Full valve 1 can be directly mounted on test chamber 20.Air inlet boosting pipeline 40 is connected to the first storage container 31 and test chamber 20
Between, (normally gaseous) the supply test chamber 20 of the test(ing) medium that the first storage container 31 is stored.Tonifying Qi pressure stabilizing pipeline 50
It is connected between the first storage container 31 and test chamber 20, is 20 tonifying Qi of test chamber, keeps its pressure relatively stable.First pressure
Power detection unit 61 is mounted on test chamber 20, detects the pressure change of test chamber 20 and the first pressure that will test becomes
Change signal and is sent to control unit 10.Control unit 10 and air inlet boosting pipeline 40, tonifying Qi pressure stabilizing pipeline 50 and first pressure
61 communication connection of detection unit, control air inlet boosting pipeline 40 opens and closes, and controls tonifying Qi pressure stabilizing according to first pressure variable signal
Pipeline 50 opens and closes.
Wherein, air inlet boosting pipeline 40 meets subject safety valve 1 and opens preceding test for being supplied in a small amount to test chamber 20
The slow boosting of container 20 (no more than the 0.01MPa/s of national Specification).Air inlet boosts pipeline 40 with respect to tonifying Qi voltage-stabiliser tube
Road 50 is small pipeline.Air inlet boosting pipeline 40 may include first pipe 41, the first regulating valve being arranged in first pipe 41
42 and first differential pressure flowmeter 43.First pipe 41 is connected between the first storage container 31 and test chamber 20, for defeated
Send test(ing) medium (gas).First regulating valve 42 is used to control the on-off and uninterrupted of first pipe 41, with control unit
10 communication connections, so that control unit 10 can control the aperture and opening and closing of the first regulating valve 42.By adjusting the first regulating valve 42
Opening size, control flow to test chamber 20 test(ing) medium flow.First differential pressure flowmeter 43 is in first pipe 41
Between the first regulating valve 42 and test chamber 20, for measuring the flow of first pipe 41, to can get flow direction test
The flow value of the test(ing) medium of container 20.
Tonifying Qi pressure stabilizing pipeline 50, to test chamber 20, meets when subject safety valve 1 is tested and is largely vented for a large amount of tonifying Qi
Stablize the requirement under centainly discharge pressure, can be set more than all the way or all the way.Tonifying Qi pressure stabilizing pipeline 50 may include second
Pipeline 51, the second regulating valve 52 being arranged on second pipe 51 and the second differential pressure flowmeter 53.Second pipe 51 is connected to
Between first storage container 31 and test chamber 20, for conveying test(ing) medium (gas).Second regulating valve 52 is for controlling the
The on-off and uninterrupted of two pipelines 51, and 10 communication connection of control unit, so that control unit 10 controllable second is adjusted
The aperture and opening and closing of valve 52.By adjusting the opening size of the second regulating valve 52, control flows to the test(ing) medium of test chamber 20
Flow.Second differential pressure flowmeter 53 on second pipe 51 between the second regulating valve 52 and test chamber 20, for surveying
The flow of second pipe 51 is measured, to can get the flow value for flowing to the test(ing) medium of test chamber 20.
According to flow measurement needs, the pressure of the first storage container 31 is higher than the pressure of test chamber 20, the pressure of the two
Than preferred 3:1.
Preferably, in order to improve the accuracy of flow measurement, meet the type approval test of the safety valve of different size model,
One differential pressure flowmeter 43 includes the first differential pressure transmitter of multichannel 431, meets different differential pressure requirements, thus the first differential pressure flowmeter 43
It can measure differential pressure signal of different sizes, receive and convert using corresponding first differential pressure transmitter 431, to meet measurement essence
The requirement of degree.Similarly, the second differential pressure flowmeter 53 includes the second differential pressure transmitter of multichannel 531, meets different differential pressure requirements.
Pressure sensor can be used in first pressure detection unit 61.
Further, safety valve type approval test automatic control system of the invention further includes the second storage container 32, connection
Tonifying Qi pipeline 70 between the second storage container 32 and the first storage container 31 is mounted in the first storage container 31 to detect
The second pressure detection unit 62 of the pressure change of first storage container 31.
Second storage container 32 is 31 complementary testing medium of the first storage container by tonifying Qi pipeline 70, maintains the first storage
The pressure of container 31 is relatively stable, convenient for the air pressure adjustment of tonifying Qi pressure stabilizing pipeline 50.Second pressure detection unit 62 and blowdown pipe
With 10 communication connection of control unit, the second pressure variable signal that second pressure detection unit 62 will test is sent on road 70
Control unit 10, control unit 10 issue corresponding instruction control tonifying Qi pipeline according to the second pressure variable signal received
Opening and closing.
Specifically, tonifying Qi pipeline 70 may include the third being connected between the second storage container 32 and the first storage container 31
Pipeline 71, the third regulating valve 72 being arranged on third pipeline 71.Third regulating valve 72 is used to control the on-off of third pipeline 71
And uninterrupted, and 10 communication connection of control unit, so that control unit 10 can control the aperture of third regulating valve 72 and open
It closes.
Second pressure detection unit 62 can be pressure sensor.
To maintain the pressure ratio between the first storage container 31 and test chamber 20, the pressure of the second storage container 32
Higher than the pressure of the first storage container 31, can constantly be supplied to the first storage container 31, the pressure ratio of the two is high as far as possible, and preferably the
Pressure ratio≤4 between two storage containers 32 and the first storage container 31.
Further, safety valve type approval test automatic control system of the invention further includes dynamic force generating unit 80, is connected to
Third pipeline 81 between dynamic force generating unit 80 and the second storage container 32, the shut-off valve 82 being arranged on the 4th pipeline 81.It is dynamic
Forcer 80 is stored into the second storage container 32 for generating power draw air, as test(ing) medium.
Safety valve type approval test automatic control system of the invention further includes out high tester 90, connection subject safety valve
1 and detect subject 1 valve rod of safety valve Lift.Control unit 10 opens high survey with high 90 communication connection of tester, reception is opened
What examination instrument 90 was sent opens high RST.
It is to be appreciated that opening high tester 90 may not include in the system of the present invention, it is only necessary to carry out safe valve-type
Installation connection use when formula is tested.
With reference to Fig. 2, type approval test is carried out to safety valve using safety valve type approval test automatic control system of the invention
Safety valve type approval test autocontrol method can comprise the following steps that
S1, control unit 10 issue instruction and open air inlet boosting pipeline 40, make the test(ing) medium stream of the first storage container 31
To test chamber 20, and the rate of rise of Control experiment container 20 is no more than 0.01MPa/s.
After S2,20 pressure rise to set-pressure of test chamber, subject safety valve 1 is opened with the progress of preset discharge pressure
Exhaust.
It opens high tester 90 to connect with subject safety valve 1, for detecting the valve rod Lift of subject safety valve 1, will examine
The high RST of opening measured is sent to control unit 10.
S3, control unit 10 issue instruction and open tonifying Qi pressure stabilizing pipeline 50, keep the test(ing) medium of the first storage container 31 logical
It crosses tonifying Qi voltage-stabiliser tube road 50 and is supplemented to test chamber 20, maintain the relatively stable of 20 pressure of test chamber, make to be tested safety valve 1
Capacity and air inflow balance.
In step S3, control unit 10 is according to the opening and closing for opening high RST control tonifying Qi pressure stabilizing pipeline 50 received.Knot
Close above-mentioned steps S2, control unit 10 receive subject safety valve 1 open open high RST after, issue open command open tonifying Qi
Pressure stabilizing pipeline 50 is 20 tonifying Qi of test chamber.
When the capacity and air inflow for being tested safety valve 1 are in balance, pressure that first pressure detection unit 61 detects
Force value is in steady state, and the flow that the first differential pressure flowmeter 43 and the second differential pressure flowmeter 53 at this time detects is effective.When
The pressure value that first pressure detection unit 61 detects illustrates that the air inflow for being tested safety valve 1 is greater than capacity, control when increasing
Unit 10 processed turns the aperture of corresponding regulating valve down, specific as follows:
1), if the pressure that first pressure detection unit 61 detects is less than setting pressure 5% hereinafter, control unit 10 is sent out
The aperture for sending instruction to turn down the first regulating valve 42, amplitude modulation can be 5%；
If 2), the pressure that first pressure detection unit 61 detects be greater than setting pressure 5% less than 10%, control unit
10 send the aperture that instruction turns down the second regulating valve 52, amplitude modulation 5%；
3), if the pressure that first pressure detection unit 61 detects is greater than setting pressure 10% and less than 20%, control
Unit 10 sends the aperture that instruction turns down the second regulating valve 52, amplitude modulation 10%；
4), if the pressure that first pressure detection unit 61 detects is greater than 20% or more pressure of setting, control unit 10
Send the aperture that instruction turns down the second regulating valve 52, amplitude modulation 20%.
Conversely, illustrating the air inlet for being tested safety valve 1 when the pressure value that first pressure detection unit 61 detects is when reducing
Amount is less than capacity, and control unit 10 tunes up the aperture of corresponding regulating valve, opens and significantly can refer to above-mentioned each situation.
In addition, the first pressure that control unit 10 is detected according to the second pressure detection unit 62 in the first storage container 31
Power variable signal (such as pressure dropping signal) issues instruction and opens tonifying Qi pipeline 70, stores the second storage container 32 first
31 tonifying Qi of container maintains the relatively stable of 31 pressure of the first storage container.
S4, test chamber 20 pressure stablize be tested in preset discharge pressure 1 valve rod of safety valve Lift it is steady
When being scheduled on setting value, control unit 10 obtains the pressure value that first pressure detection unit 61 detects on test chamber 20, subject
The flow value of the Lift value of 1 valve rod of safety valve and air inlet boosting pipeline 40, completes the type approval test of subject safety valve 1.
With the type approval test of specific safety valve, the invention will be further described below.It is tested safety valve model: A48Y-
16C DN50 PN40, set-pressure (cracking pressure) 1.0MPa discharge pressure 1.1MPa, open high (valve rod Lift)
12.5mm。
Before test, by the regulation of relevant criterion, theoretical row of the subject safety valve 1 in the case where discharging pressure 1.1MPa is calculated
Amount；After obtaining theoretical displacement, further according to the technical characteristic of the first regulating valve 42 on air inlet boosting pipeline 40, the first adjusting is extrapolated
The opening size of valve 42, and the opening value input control unit 10 (such as CPU) extrapolated, while will also discharge pressure 1.1MPa
Index input control unit 10.
When test, control unit 10 issues instruction and opens the first regulating valve 42, and test(ing) medium is flowed from the first storage container 31
To test chamber 20,20 rate of rise of Control experiment container is no more than 0.01MPa/s.When 20 pressure rise of test chamber to adjusting
Pressure 1.0MPa (left and right) opens subject safety valve 1, opens high tester 90 and detects that subject safety valve 1 valve rod opens height, and handle
The high RST of opening detected is transferred to control unit 10, and control unit 10 issues instruction, opens second on tonifying Qi pressure stabilizing pipeline 50
Regulating valve 52.After second regulating valve 52 is opened, the test(ing) medium of the first storage container 31 is largely supplemented to test chamber 20, test
20 pressure of container can be certain fluctuation, control unit 10 tests according to preset pressure judgment value and first pressure detection unit 61
To pressure signal compare, in due course adjust the second regulating valve 52 aperture, with meet test chamber 20 pressure stablize.
During the test, the first storage container 31 is constantly to 20 make-up gas of test chamber, the first storage container 31 pressure
Power can decline.To guarantee that 31 pressure of the first storage container is relatively stable, in the first storage that second pressure detection unit 62 detects
When depositing the signal of 31 pressure of container decline, signal is transferred to control unit 10, control unit 10 issues by comparing, after judgement
The third regulating valve 72 on tonifying Qi pipeline 70 is opened in instruction, from the second storage container 32 to 31 tonifying Qi of the first storage container, with dimension
The pressure for holding the first storage container 31 is relatively stable, and is convenient for the air pressure adjustment of the second regulating valve 52.
When the pressure that the first pressure detection unit 61 on test chamber 20 detects is stablized in discharge pressure 1.1MPa, quilt
The valve rod of examination safety valve 1 opens high stable near 12.5mm when some value, and control unit 10 reads first pressure detection unit
61 test pressure, open height, the first differential pressure flowmeter 43 and the second differential pressure flowmeter 53 for opening the high measurement of tester 90 measure
Flow (being converted by differential pressure transmitter), complete subject safety valve 1 type approval test.
After completing test, third regulating valve 72, the second regulating valve 52 and the first regulating valve 42 are successively closed, terminates test.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of safety valve type approval test automatic control system, which is characterized in that including control unit (10), for connecting subject
The test chamber (20) of safety valve (1), the first storage container (31), air inlet boosting pipeline (40), at least one tonifying Qi voltage-stabiliser tube
Road (50) and first pressure detection unit (61)；
Air inlet boosting pipeline (40) is connected between first storage container (31) and test chamber (20), by described the
The test(ing) medium of one storage container (31) storage supplies the test chamber (20)；The tonifying Qi pressure stabilizing pipeline (50) is connected to institute
It states between the first storage container (31) and test chamber (20), is the test chamber (20) tonifying Qi pressure stabilizing；
The first pressure detection unit (61) is mounted on the test chamber (20), detects the pressure of the test chamber (20)
Power changes and the first pressure variable signal that will test is sent to described control unit (10)；
Described control unit (10) and air inlet boosting pipeline (40), tonifying Qi pressure stabilizing pipeline (50) and first pressure detection are single
First (61) communication connection controls air inlet boosting pipeline (40) opening and closing, and controls institute according to the first pressure variable signal
State tonifying Qi pressure stabilizing pipeline (50) opening and closing.
2. safety valve type approval test automatic control system according to claim 1, which is characterized in that the air inlet boosting pipe
Road (40) includes the first pipe (41) being connected between first storage container (31) and test chamber (20), is arranged in institute
State the first regulating valve (42) and the first differential pressure flowmeter (43) on first pipe (41)；Described control unit (10) and described the
One regulating valve (42) communication connection controls the aperture and opening and closing of first regulating valve (42)；
The tonifying Qi pressure stabilizing pipeline (50) includes the be connected between first storage container (31) and test chamber (20)
Two pipelines (51), the second regulating valve (52) and the second differential pressure flowmeter (53) being arranged on the second pipe (51)；It is described
Control unit (10) and the second regulating valve (52) communication connection control the aperture and opening and closing of second regulating valve (52).
3. safety valve type approval test automatic control system according to claim 2, which is characterized in that the first differential pressure stream
Meter (43) includes the first differential pressure transmitter of multichannel (431)；
Second differential pressure flowmeter (53) includes the second differential pressure transmitter of multichannel (531).
4. safety valve type approval test automatic control system according to claim 1, which is characterized in that the safety valve pattern
Test automatic control system further includes the second storage container (32), is connected to second storage container (32) and the first storage appearance
Tonifying Qi pipeline (70) between device (31) is mounted on first storage container (31) to detect first storage container
(31) the second pressure detection unit (62) of pressure change；
The second pressure detection unit (62) and described control unit (10) communication connection, the second pressure variation that will test
Signal is sent to described control unit (10)；
Described control unit (10) and tonifying Qi pipeline (70) communication connection, according to the second pressure variable signal control received
Make tonifying Qi pipeline (70) opening and closing.
5. safety valve type approval test automatic control system according to claim 4, which is characterized in that the tonifying Qi pipeline
It (70) include being connected to third pipeline (71) between second storage container (32) and the first storage container (31), being arranged and exist
Third regulating valve (72) on the third pipeline (71)；
Described control unit (10) and third regulating valve (72) communication connection, control the aperture of the third regulating valve (72)
And opening and closing.
6. safety valve type approval test automatic control system according to claim 4, which is characterized in that second storage is held
The pressure of device (32) is higher than the pressure of first storage container (31), and second storage container (32) and first storage
Deposit pressure ratio≤4 between container (31).
7. safety valve type approval test automatic control system according to claim 1-6, which is characterized in that the peace
Full valve type approval test automatic control system further includes dynamic force generating unit (80), is connected to the dynamic force generating unit (80) and the second storage
Deposit the third pipeline (81) between container (32), the shut-off valve (82) being arranged on the 4th pipeline (81).
8. safety valve type approval test automatic control system according to claim 1-6, which is characterized in that the peace
Full valve type approval test automatic control system further includes connection subject safety valve (1) and the valve rod unlatching for detecting subject safety valve (1)
Height opens high tester (90)；Described control unit (10) opens high tester (90) communication connection with described, opens described in reception
What high tester (90) sent opens high RST.
9. a kind of safety valve type approval test autocontrol method, which is characterized in that use the described in any item peaces of claim 1-8
Full valve type approval test automatic control system, the safety valve type approval test autocontrol method the following steps are included:
S1, control unit (10) issue instruction and open air inlet boosting pipeline (40), make the test(ing) medium of the first storage container (31)
It flow in test chamber (20), and the rate of rise of Control experiment container (20) is no more than 0.01MPa/s；
After S2, the test chamber (20) pressure rise to set-pressure, subject safety valve (1) is opened with preset discharge pressure
It is exhausted；
S3, described control unit (10) issue instruction and open tonifying Qi pressure stabilizing pipeline (50), make first storage container (31)
Test(ing) medium is supplemented to the test chamber (20) by the tonifying Qi pressure stabilizing pipeline (50), and the test chamber (20) is maintained to press
Power it is relatively stable, make be tested safety valve (1) capacity and air inflow balance；
S4, stablize in the pressure of the test chamber (20) in the preset discharge pressure, be tested opening for safety valve (1) valve rod
Open highly stable in setting value, first pressure detection unit on described control unit (10) the acquisition test chamber (20)
(61) flow value of the pressure value, the Lift value and air inlet boosting pipeline (40) that are tested safety valve (1) valve rod that detect,
Complete the type approval test of subject safety valve (1).
10. safety valve type approval test autocontrol method according to claim 9, which is characterized in that in step S2, open height
Tester (90) detection is tested the valve rod Lift of safety valve (1) and the high RST of opening that will test is sent to the control list
First (10)；In step s3, described control unit (10) issues instruction unlatching tonifying Qi voltage-stabiliser tube according to the high RST of opening received
Road (50)；
In step S3, described control unit (10) is according to the second pressure detection unit (62) on first storage container (31)
The first pressure variable signal detected issues instruction and opens tonifying Qi pipeline (70), and making the second storage container (32) is described the
One storage container (31) tonifying Qi maintains the relatively stable of the first storage container (31) pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022335.6A CN109596339B (en) | 2019-01-10 | 2019-01-10 | Automatic control system and method for safety valve type test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022335.6A CN109596339B (en) | 2019-01-10 | 2019-01-10 | Automatic control system and method for safety valve type test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596339A true CN109596339A (en) | 2019-04-09 |
| CN109596339B CN109596339B (en) | 2024-05-10 |
Family
ID=65965872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910022335.6A Active CN109596339B (en) | 2019-01-10 | 2019-01-10 | Automatic control system and method for safety valve type test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596339B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976402A (en) * | 2019-04-26 | 2019-07-05 | 太原理工大学 | A kind of pressure difference automatic control device and control method |
| CN110207003A (en) * | 2019-06-28 | 2019-09-06 | 郑州市卧龙游乐设备有限公司 | A kind of inflation facility multiple-unit central gas supply system and its control method |
| CN113340586A (en) * | 2021-05-24 | 2021-09-03 | 蓝箭航天技术有限公司 | Valve low-temperature test method and measurement and control system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893494A (en) * | 1988-03-31 | 1990-01-16 | Management Services International, Inc. | Method and system for testing safety relief valves |
| CN102721539A (en) * | 2012-06-26 | 2012-10-10 | 深圳市特种设备安全检验研究院 | Safety valve thermal-state test device |
| CN103674522A (en) * | 2013-11-26 | 2014-03-26 | 北京宇航系统工程研究所 | Valve test system |
| CN103808503A (en) * | 2014-02-24 | 2014-05-21 | 华东理工大学 | Test device and test method for testing delivery capacity of steam security valve |
| CN103852245A (en) * | 2012-12-04 | 2014-06-11 | 华东理工大学 | Test device and test method for testing heat-state mechanical performance of safety valve |
| CN203719715U (en) * | 2014-01-14 | 2014-07-16 | 深圳市特种设备安全检验研究院 | Safety valve type test flow measuring device |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN205942465U (en) * | 2016-05-25 | 2017-02-08 | 国核工程有限公司 | Containment test pressure control system |
| CN205942466U (en) * | 2016-08-23 | 2017-02-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Gas pressure control structure |
| 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 |
| CN208125368U (en) * | 2018-04-28 | 2018-11-20 | 中国船舶重工集团公司第七一九研究所 | A kind of safety valve automatic testing equipment |
| CN209372404U (en) * | 2019-01-10 | 2019-09-10 | 深圳市特种设备安全检验研究院 | Safety valve type approval test automatic control system |
-
2019
- 2019-01-10 CN CN201910022335.6A patent/CN109596339B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893494A (en) * | 1988-03-31 | 1990-01-16 | Management Services International, Inc. | Method and system for testing safety relief valves |
| CN102721539A (en) * | 2012-06-26 | 2012-10-10 | 深圳市特种设备安全检验研究院 | Safety valve thermal-state test device |
| CN103852245A (en) * | 2012-12-04 | 2014-06-11 | 华东理工大学 | Test device and test method for testing heat-state mechanical performance of safety valve |
| CN103674522A (en) * | 2013-11-26 | 2014-03-26 | 北京宇航系统工程研究所 | Valve test system |
| CN203719715U (en) * | 2014-01-14 | 2014-07-16 | 深圳市特种设备安全检验研究院 | Safety valve type test flow measuring device |
| CN103808503A (en) * | 2014-02-24 | 2014-05-21 | 华东理工大学 | Test device and test method for testing delivery capacity of steam security valve |
| CN205942465U (en) * | 2016-05-25 | 2017-02-08 | 国核工程有限公司 | Containment test pressure control system |
| CN205942466U (en) * | 2016-08-23 | 2017-02-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Gas pressure control structure |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN208125368U (en) * | 2018-04-28 | 2018-11-20 | 中国船舶重工集团公司第七一九研究所 | A kind of safety valve automatic testing equipment |
| 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 |
| CN209372404U (en) * | 2019-01-10 | 2019-09-10 | 深圳市特种设备安全检验研究院 | Safety valve type approval test automatic control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976402A (en) * | 2019-04-26 | 2019-07-05 | 太原理工大学 | A kind of pressure difference automatic control device and control method |
| CN110207003A (en) * | 2019-06-28 | 2019-09-06 | 郑州市卧龙游乐设备有限公司 | A kind of inflation facility multiple-unit central gas supply system and its control method |
| CN110207003B (en) * | 2019-06-28 | 2024-10-25 | 郑州市卧龙游乐设备有限公司 | Multi-unit centralized air supply system of inflation facility and control method thereof |
| CN113340586A (en) * | 2021-05-24 | 2021-09-03 | 蓝箭航天技术有限公司 | Valve low-temperature test method and measurement and control system |
| CN113340586B (en) * | 2021-05-24 | 2022-12-13 | 蓝箭航天技术有限公司 | Valve low-temperature test method and measurement and control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109596339B (en) | 2024-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109596339A (en) | Safety valve type approval test automatic control system and method | |
| CN103365306B (en) | A kind of high-speed wind tunnel special test compressed air require adjusting means and method | |
| CN105445007B (en) | A kind of gas turbine gaseous fuel control valve Flow characteristic test system and method | |
| CN201464198U (en) | Device for defining combustion adaptation region or combustion condition of gas appliance | |
| CN100573083C (en) | The device and method that is used for the continuous coverage of pneumatic pressure-release valve discharge characteristic | |
| WO2017128479A1 (en) | Fully-automated system for testing gas permeability of rock and estimation method | |
| JP2020038003A (en) | Apparatus and method for testing compressed gas dispensing stations | |
| CN209372404U (en) | Safety valve type approval test automatic control system | |
| CN101979492B (en) | Laboratory liquor blending device and electromagnetic valve selection method | |
| CN108225443A (en) | Natural gas flow detects loop device | |
| CN112782357A (en) | Automatic calibration method and device for gas sensor | |
| CN105074415A (en) | Air pressure circuit for tire testing device | |
| CN102590016A (en) | Soil moisture characteristic curve measurement device and measurement method thereof | |
| CN207007487U (en) | Detect the detector for safety valve of the Opening pressure of safety valve | |
| US20180024026A1 (en) | System And Method For Integrity Testing Of Flexible Containers | |
| CN109237105B (en) | A kind of control valve system that can quickly adjust and its control method | |
| CN106153162B (en) | Gas flowmeter detection equipment | |
| CN108845609A (en) | A kind of gas loading system and method | |
| CN108121370A (en) | A kind of investigating method and TT＆C system of vacuum environment gas flow | |
| CN108333091A (en) | A kind of high temperature Triaxial hole oozes test device and method | |
| CN114082362A (en) | Automatic gas distribution device and method for mixed gas | |
| CN117469141B (en) | Flow and volumetric efficiency measuring method and system of low-temperature high-pressure reciprocating pump | |
| CN110208207A (en) | A kind of carbon and sulphur contents detection method and detection system | |
| CN109196442A (en) | For manufacturing the volume and weight occupied state of admixture of gas | |
| CN107191154B (en) | Wellhead back pressure regulating method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210924 Address after: 518005 agricultural science and technology building, No. 1085, south of chaguang Road, Xili street, Nanshan District, Shenzhen, Guangdong Applicant after: Shenzhen Institute of quality and safety inspection and testing Address before: 518024 special inspection building, No. 1032, Honggang Road, Qingshuihe street, Luohu District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |