CN109000859A - A kind of tightness test system and method - Google Patents
A kind of tightness test system and method Download PDFInfo
- Publication number
- CN109000859A CN109000859A CN201810812974.8A CN201810812974A CN109000859A CN 109000859 A CN109000859 A CN 109000859A CN 201810812974 A CN201810812974 A CN 201810812974A CN 109000859 A CN109000859 A CN 109000859A
- Authority
- CN
- China
- Prior art keywords
- valve
- test
- pressure transmitter
- pressure
- differential pressure
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title abstract description 30
- 230000002452 interceptive effect Effects 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 9
- 238000011056 performance test Methods 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 28
- 238000001514 detection method Methods 0.000 description 16
- 238000007789 sealing Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012800 visualization Methods 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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The present invention discloses a kind of tightness test system and method and is exaggerated change in pressure drop using mutative scale observation method, can quickly judge pressure drop situation；Improve the efficiency of dry type pressure decline method air tightness test；And mutative scale pressure drop observation method of the present invention is applied, external leakage is not only may determine that, can also judge the internal leakage of valve class equipment；Valve of the invention is electrically operated valve, it is controlled by control system, and the present invention also utilizes man-machine interactive system intelligent decision leakage situation, test report is automatically generated, the labor intensity of operator is not only reduced, improves testing efficiency, it can also be visual by the test case distal end of overall process, it allows third party, such as user, increases the trust to properties of product.The present invention is applicable not only to gas pressure regulator, governor/pilot valve air-leakage test, extends also to the air tightness test of other pressure reducing valve classes；It in addition to air tightness test, can be extended to other performance tests, such as close pressure test.
Description
Technical field
The invention belongs to air tightness test field, in particular to a kind of gas pressure regulator, governor/pilot valve air tightness test technology.
Background technique
Pressure regulator is that high-pressure delivery combustion gas is adjusted to required pressure, guarantees to supply in fuel gas transmission and supply system
The stable important equipment of pressure, guarantee that the No leakage of pressure regulator system is one of the most significant problems of gas safe supply.And
The pilot valve of gas pressure regulator, governor influences huge, the air-tightness survey of pilot valve on the working performance of widely applied indirect type pressure regulator
Examination and performance test become the important link and efficiency bottle neck of pilot valve production, the visualization of test process and test result
As earning users to trust with the important means in strong boosting market.Current pilot valve performance test have no corresponding national standard or
Professional standard can be according to, and the testing efficiency of pressure regulator is low.
In actual production, many producers are to the national standard that the test of pilot valve is with reference to gas pressure regulator, governor, with manual operation
Air tightness test is carried out with the method for smearing leak detection liquid eye-observation.Mainly include for the performance test of pressure regulator/pilot valve
Performing leak test, minimum value test, set point test, closes pressure test at maximum value test.Performing leak test includes outer
Sealing and interior sealing are usually at present after pilot valve is filled with high pressure gas, to close entrance for the test of pilot valve external seal,
Pilot valve is immersed in pond or is smeared leak detection liquid, bubble generation has been seen whether, to judge whether external seal is qualified；And it is right
After pilot valve is usually filled with high pressure gas by interior sealing, inlet and outlet are closed, and using pressure maintaining a few hours, observe pilot valve inlet and outlet
Pressure gauge reading judges whether interior sealing is qualified.And pilot valve other performance tests, in the adjusting spiral shell for adjusting pilot valve
After bar, the reading of eye-observation delivery gauge, manually provide whether He Ge conclusion.
Pilot valve is all confined to manual testing at present, is tested using the method for oneself, and low efficiency, precision are low, subjectivity is strong,
As the bottleneck problem in production factory process；And test process and result are not visible to user, it is difficult to obtain user to product
Trust.
Application No. is 201220257649.0 utility models to disclose a kind of gas pressure regulator, governor detection system, ARM conduct
The controller of microprocessor drives step motor control pressure regulator outlet pressure by stepper motor drive module, passes through pressure
The pressure and flow information of sensor, flow sensor acquisition pressure regulator under different opening, the information of acquisition is turned by A/D
Mold changing is that digital quantity inputs in arm processor, by showing on the touchscreen after processing, judges whether to meet for staff
Respective standard；Although the utility model realizes pressure in test pipeline, the automatic adjustment of flow and acquisition and shows, inspection is reduced
Survey personnel labor intensity；It but is that testing staff is needed to check on touch screen controller for the qualified or not judgement of pressure regulator
The pressure and flow information of display need manually to go to judge the qualification of product, and detection intensity is big, subjectivity is strong.And the skill
Art does not do detailed design explanation, especially air-leakage test for the testing principle of pressure regulator gas circuit, according to traditional pressure decline method,
Need long-time pressure maintaining, the inefficiency of detection.
One full performance detecting system of gas pressure regulator, governor of the disclosure of the invention of application number position 201610203270.3, by setting
Set a plurality of in parallel signal piping, a plurality of air inlet pipeline, can carry out simultaneously multiple interfaces form or connection size specification pressure regulator,
The full performance detection of pressure regulating box, surge tank；The invention, can by a plurality of signal piping in parallel, a plurality of different pressures air inlet pipeline
Realize that the pressure regulator of plurality of specifications and interface detects；But sealing propertytest is done using traditional people's manual inspection, pressure decline method,
Detection efficiency is low, subjectivity is strong, precision is low.
To sum up, existing pilot valve performance test accepted standard disunity, each manufacturer use the detection of oneself
Means generally stay at the artificial detection stage, using immersion or the method test pilot valve air-tightness of sprinkling leak detection liquid, and for
Other performance test is also mostly by manual operation, and even with automatic detection, but conclusion is also or artificial judgment.Tester's labour
Intensity is big, subjectivity is strong, testing efficiency and measuring accuracy are low.So the present invention can solve the relevant automation such as efficiency and intelligence
The problem of capable of changing.
And for air tightness test, judge whether external leakage and having seen whether bubble.This method tested person
Conscientiously degree is affected for the carefulness of time, tester, be easy to cause erroneous judgement, and the wet type detection of this air-tightness, is examining
It needs to clean pilot valve, be dried after the completion of surveying, and increasing the product export period.So the present invention can solve
Air-tightness judges the problem of subjectivity.
Summary of the invention
To solve the rapidity of air tightness test observation and the adaptability problem of products of different specifications test, the present invention is proposed
A kind of tightness test system and method using dry type air tightness test, while creatively proposing " to exempt from the pressure drop of tender comparison
Mutative scale observation strategy ", also improves the adaptability to different size while improving testing efficiency.
The technical solution adopted by the present invention are as follows: a kind of tightness test system, comprising: measured piece, goes out import test pipeline
Mouth test pipeline, control system and power-supply system；
First or second pressed gas through import test pipeline from test specimen input end input, test specimen outlet end with
Outlet test pipeline input end is connected；The control system is used to control import test pipeline and outlet test pipeline；
The power-supply system is used to provide power supply to import testing tube road, outlet test pipeline and control system.
Further, the import test pipeline includes: pressure-regulating valve, triple valve, shut-off valve, first pressure pick-up
Device, the first differential pressure transmitter, the first differential pressure transmitter enable valve and the first diffusion valve；The pressure-regulating valve first end conduct
First air inlet inputs first pressure gas, and pressure-regulating valve output end is connected with triple valve first end, the triple valve second
End is used as the second air inlet, inputs second pressure gas, and triple valve third end is connected with shut-off valve input terminal, and shut-off valve is defeated
Outlet is connected with the first differential pressure transmitter first end, and the first differential pressure transmitter second end is connected with measured piece inlet end, and
First differential pressure transmitter is in parallel with the first differential pressure transmitter enabling valve, and the first pressure transmitter is connected to the first differential pressure
Transmitter first end, first diffusion valve are connected to the first differential pressure transmitter second end；
The first pressure gas is high pressure gas, and second pressure gas is low-pressure gas；Test input high pressure gas every time
Body and any one in low-pressure gas；When import test pipeline input high pressure gas, by pressure-regulating valve by measured piece
Import end pressure is adjusted to design maximum pressure；First inlet pressure is adjusted to the design of measured piece input end by the pressure-regulating valve
Maximum pressure.
Further, test pipeline in the outlet includes: that the second differential pressure transmitter enables valve, the second differential pressure transmitter, the
Two pressure transmitters, flow control valve, intelligent flow meter and the second diffusion valve；The second differential pressure transmitter first end and quilt
It surveys part outlet side to be connected, the second differential pressure transmitter second end is connected with flow control valve first end, the flow control valve second
End is connected with intelligent flow meter first end, outlet end of the intelligent flow meter second end as outlet test pipeline；Described second is poor
It is in parallel that pressure transmitter also enables valve with the second transmitter；The second pressure transmitter is connected to the second differential pressure transmitter second
End, second diffusion valve are connected to the second differential pressure transmitter second end.
Further, the control system includes: AI module, controller, DO module and valve driver；AI module is adopted
Collection is for acquiring data, and by the data transmission of acquisition to controller, controller judges data collected, and according to
Judging result controls DO module output control signal, the control signal control valve gate driver work.
Further, when air tightness test, the AI module acquires the first pressure transmitter reading and differential pressure transmitter
Reading judge whether being more than leakage rate, to show whether measured piece air-tightness is qualified by controller.
Further, when maximum value test or minimum value test or set point are tested, the AI module acquires flowmeter
And second pressure transmitter reading, controller control DO module output control signal according to meter readings, are driven by valve
It is small flow status that dynamic device, which adjusts flow control valve, and adjusts measured piece adjusting screw rod.
Further, the control system further includes access man-machine interactive system；The man-machine interactive system is for inputting
The parameter and export printing test report of measured piece.
A kind of pilot valve air tightness testing method of gas pressure regulator, governor, specifically: the first inlet pressure is adjusted to be tested
Part input end designs maximum pressure, closes flow control valve for pipeline flow and is adjusted to zero, shut-off valve is then shut off, to system pressure
After power is stablized, simultaneously closes off the first differential pressure transmitter and enable valve and the second differential pressure transmitter enabling valve, in dwell time t, no
Whether the value of the first differential pressure transmitter of disconnected acquisition and the second differential pressure transmitter is more than amount of leakage, judge whether to have occurred it is interior reveal or
Outward leakage, to show whether measured piece air-tightness is qualified.
Further, it is positive when the differential pressure transmitter of inlet end is read, and the differential pressure transmitter of outlet side is positive；Then should
Tested pilot valve is internal leakage；It is positive when the differential pressure transmitter of inlet end is read, and the differential pressure transmitter of outlet side is negative；Then should
Measured piece is external leakage.
Beneficial effects of the present invention: a kind of tightness test system of the invention and method, by the pressure of large scale wide-range
The voltage drop detection of power transmitter is converted into the differential pressure transmitter of small scale small-range, pressure change caused by measurement leaks.It is this
The pressure drop observation method of mutative scale, is exaggerated pressure change, can quickly judge pressure drop situation；Dry type pressure decline method air-tightness is improved to survey
The efficiency of examination；And the present invention has carried out mutative scale pressure drop observation method application in front-end and back-end, not only may determine that outer
Leakage, can also judge the internal leakage of valve class equipment；The present invention utilizes man-machine interactive system using automation, digitization program
Intelligent decision leakage situation, and test report is automatically generated, the labor intensity of operator is not only reduced, test effect is improved
Rate, can also be visual by the test case of overall process distal end, allows third party, such as user, increases the trust to properties of product.This hair
Bright purpose is to extend also to the air-tightness of other valve classes for gas pressure regulator, governor/pilot valve air-tightness factory testing
Test.Tightness test system of the invention is directly accessed test to the valve class workpiece of different size, distinct interface form, and
Remove comparison standard component from；In addition to air tightness test, pressure test can be such as closed with easy expansion to other performance tests.
Detailed description of the invention
Test macro schematic diagram Fig. 1 of the invention；
Fig. 2 is test macro control principle drawing provided in an embodiment of the present invention；
Fig. 3 is test flow chart provided in an embodiment of the present invention.
Specific embodiment
For convenient for those skilled in the art understand that technology contents of the invention, with reference to the accompanying drawing to the content of present invention into one
Step is illustrated.
In the air tightness test of conventional high-tension power media, the pressure transmitter broad quantum of use, due to precision and resolution ratio
Limitation, when minute leakage occurs, to be lot more time to judge from reading that leakage causes pressure drop.The present invention is by large scale
The voltage drop detection of the pressure transmitter of wide-range, the differential pressure transmitter measurement for being converted into small scale small-range leak caused pressure
Variation.But the standard component for not having to co-content is compared.The pressure drop observation method of this mutative scale, is exaggerated pressure change, energy
Quickly judge pressure drop situation；Standard component is eliminated simultaneously, rapidly adapts to different size measured workpiece.
Strategy is observed in the mutative scale pressure drop that tender is exempted from application on the front and back end pipeline of measured workpiece, not only realizes dry type
The function that pressure decline method external leakage is quickly tested can also carry out the judgement of internal leakage simultaneously.
The present invention, which is used, realizes pressure regulator/pilot valve test, specific implementation are as follows: such as based on " pressure drop mutative scale observation strategy "
Shown in Fig. 1, comprising: measured piece, import test pipeline, outlet test pipeline, control system and power-supply system；Import testing tube
There is a high-low pressure two-way air inlet in road part, and three-way ball valve 2 realizes high-low pressure air inlet selection, first with factory's instrument wind mesolow gas into
Row sealing propertytest can carry out high pressure (pilot valve inlet end extreme design pressure) test when low pressure is without leakage.High pressure gas
Inlet pressure is adjusted to pilot valve inlet end design maximum pressure by pressure regulator valve 1 by body, enters shut-off valve by three-way ball valve 2
3, shut-off valve 3 needs to close air inlet according to test；First pressure transmitter 4, for detecting import end pressure；First differential pressure transporting
Device 5 is in parallel with the first differential pressure transmitter enabling valve 6；Outlet test pipeline portions, the second differential pressure transmitter 8 and the second differential pressure transporting
It is in parallel that device enables valve 7；Second pressure transmitter 9, for detecting outlet pressures；Flow control is by flow control valve 10 in pipeline
It completes；Intelligent flow meter 11 monitors flow in pipeline；First diffusion valve 12, is normally off, and emergency occurs for test macro
When, the first diffusion valve 12 is opened, it can quick drain input end pipeline gas；Second diffusion valve 13 is normally off, emergency
When, it can quick drain outlet end pipeline gas.
The outlet end of first diffusion valve 12 can also be used for the verifying unit of connection first pressure transmitter 4, can not dismantle the
Check and correction can be completed in one pressure transmitter 4.
The outlet end of second diffusion valve 13 can also be used for the verifying unit of connection second pressure transmitter 9, be equally applicable to
Pressure gauge transmitter 9 is not dismantled completes check and correction.
Pressure regulator valve 1, three-way ball valve 2, shut-off valve 3, the first differential pressure transmitter in the present embodiment enable valve 6, the second differential pressure
It is electrically operated valve that transmitter, which enables valve 7, flow control valve 10, the first diffusion valve 12, the second diffusion valve 13,；Pass through control system
It is controlled.
Control system is to all electrically operated valves, as transmitter enables valve, pressure/flow regulating valve and other are electronic
Switch valve etc. exports control signal using DO module, is controlled through valve driver；Transmitter is acquired using AI module simultaneously
With the data of flowmeter, the instrument of communication interface is had for part, also can use communication interface acquisition data, such as intelligence flow
Meter.Control system can also access man-machine interactive system, such as industrial personal computer and display.Interface is that the communication of adaptive controller connects
Mouthful, such as RS232 RS485, Ethernet interface, the purpose of human-computer interaction be input measured piece parameter and export printing test
Report.
Power unit is powered to whole system.The light current supplied including 220AC forceful electric power and 24VDC Switching Power Supply.
As shown in Fig. 2, switch valve, regulating valve in this signal piping, by PLC control and acquisition state feedback information；Pressure
Power transmitter, differential pressure transmitter, intelligent flow meter and plc communication realize information collection in pipeline.PLC is by collected letter
Breath is uploaded to test software in industrial personal computer, realizes pilot valve and detects automatically.
It in the inlet and outlet connection of tested pilot valve, is connected using high-pressure hose, is equipped with different size, diversified forms connect
Head, the pilot valve that Multiple Type specification and connection size can be realized are tested.
Pilot valve detection specifically includes that performing leak test (including external seal and interior sealing), maximum value test, minimum value are surveyed
Examination, set point test, testing process lead to as shown in figure 3, be equipped with the test software of exploitation on the host computer of human-computer interaction part
Cross software interface starting test process.
Performing leak test principle: such as Fig. 1, gas enters system from left side front end pipeline, from rear end pipe after measured workpiece
It goes out on road.When 3 and 10 two shut-off valves are closed, then the both ends differential pressure transmitter A, B gas pressure is consistent, 5 and 8 two differential pressure transportings
The value of device is zero.After differential pressure, which enables valve 6 and 7, to be also switched off, if measured workpiece has external leakage, then differential pressure transmitter 5 and 8
Value be just not zero.
If the pressure at the both ends differential pressure transmitter A, B, PA > PB is positive value, otherwise is negative value.Then:
When external leakage occurs for measured workpiece, 5 are positive, and 8 are negative.
When internal leakage occurs for measured workpiece, the gas flow rear end of front end, then differential pressure transmitter 5 is positive, and 8 are also positive.
It can be using the positive and negative and size of the value of differential pressure transmitter, to judge the case where leaking.Even different size
Measured workpiece, same process and logic.The leak-testing mode that the traditional test that compares needs standard component to compare, this hair
Bright test macro adaptability is obviously more preferable.
By taking Hi-pot test as an example, tester is after installing pilot valve, by inputting pilot valve in function test software
The parameters such as model, spring, ID number can start to test automatically.
In performing leak test, system uses two pressure transmitters, and external seal is quick in differential pressure method realization pilot valve
Detection, and detected for dry-type encapsulated property.Pilot valve outlet pressure is first transferred to spring maximum value, 10 is closed and pipeline flow is arranged
It is zero, turns off air inlet shut-off valve 3, after system pressure is stablized, simultaneously closes off differential pressure transmitter and enable valve 6 and 7, in pressure maintaining
In time t (the specific time is determines according to actual conditions), industrial personal computer constantly acquire that (continuous acquire of the present embodiment herein be approximately
Continuous acquisition) whether the values of two differential pressure transmitters 5 and 8 be more than that (this amount of leakage is by pilot valve test software according to national standard for amount of leakage
Calculate), judge whether that inside/outside leakage has occurred, to obtain the qualified or not conclusion of pilot valve leakproofness.
When maximum value test, minimum value test, set point test, shut-off valve 3,6,7 is maintained a normally open, according to intelligent flow meter
The flow information of 11 feedbacks, control flow control valve 10 are small flow status, and the adjusting screw rod for adjusting pilot valve (is manually adjusted
Section), according to the feedback information of delivery gauge 9, judge whether pilot valve outlet pressure can reach maximum value, minimum value, setting
Point, to obtain test result.Above test process real-time display institute in pilot valve test software key frame in industrial personal computer
There are the state and reading of instrument and meter.
After the completion of single stepping test, industrial personal computer issues a command to PLC, drives combined aural and visual alarm, and different colors, which represents test, is
It is no to pass through.After the completion of all test items, pilot valve test software automatically generates test report, consults and beats for tester
Print.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.For ability
For the technical staff in domain, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of tightness test system characterized by comprising measured piece, import test pipeline, outlet test pipeline, control
System processed, power-supply system；
First or second pressed gas is tested pipeline through import and is inputted from test specimen input end, test specimen outlet end and outlet
Pipeline input end is tested to be connected；The control system is used to control import test pipeline and outlet test pipeline；It is described
Power-supply system is used to provide power supply to import testing tube road, outlet test pipeline and control system.
2. a kind of tightness test system according to claim 1, which is characterized in that the import tests pipeline and includes:
Pressure-regulating valve, triple valve, shut-off valve, first pressure transmitter, the first differential pressure transmitter, the first differential pressure transmitter enable valve with
And first diffusion valve；The pressure-regulating valve first end inputs first pressure gas as the first air inlet, and pressure-regulating valve is defeated
Outlet is connected with triple valve first end, and the triple valve second end inputs second pressure gas as the second air inlet, and described three
Port valve third end is connected with shut-off valve input terminal, and shut-off valve output end is connected with the first differential pressure transmitter first end, and described first
Differential pressure transmitter second end is connected with measured piece inlet end, and first differential pressure transmitter and the first differential pressure transmitter enable valve
Parallel connection, the first pressure transmitter are connected to the first differential pressure transmitter first end, and it is poor that first diffusion valve is connected to first
Pressure transmitter second end；
The first pressure gas is high pressure gas, and second pressure gas is low-pressure gas；Every time test input high pressure gas with
Any one in low-pressure gas；When import test pipeline input high pressure gas, by pressure-regulating valve by measured piece import
End pressure is adjusted to design maximum pressure；First inlet pressure is adjusted to measured piece input end design highest by the pressure-regulating valve
Pressure.
3. a kind of tightness test system according to claim 2, which is characterized in that the outlet tests pipeline and includes:
Second differential pressure transmitter enable valve, the second differential pressure transmitter, second pressure transmitter, flow control valve, intelligent flow meter and
Second diffusion valve；The second differential pressure transmitter first end is connected with measured piece outlet side, the second differential pressure transmitter second end with
Flow control valve first end is connected, and the flow control valve second end is connected with intelligent flow meter first end, intelligent flow meter the
Outlet end of two ends as outlet test pipeline；It is in parallel that second differential pressure transmitter also enables valve with the second transmitter；It is described
Second pressure transmitter is connected to the second differential pressure transmitter second end, and second diffusion valve is connected to the second differential pressure transmitter
Two ends.
4. a kind of tightness test system according to claim 1, which is characterized in that the control system includes: AI mould
Block, controller, DO module and valve driver；The acquisition of AI module is extremely controlled for acquiring data, and by the data transmission of acquisition
Device processed, controller judge data collected, and control DO module output control signal, the control according to judging result
Signal control valve gate driver work processed.
5. a kind of tightness test system according to claim 1, which is characterized in that when air tightness test, the AI mould
Block acquires the first pressure transmitter reading and reads with differential pressure transmitter, judge whether being more than leakage rate by controller, from
And show whether measured piece air-tightness is qualified.
6. a kind of tightness test system according to claim 1, which is characterized in that maximum value test or minimum value test
Or when set point test, the AI module acquisition flowmeter and second pressure transmitter reading, controller are read according to flowmeter
Number control DO module output control signal, adjusting flow control valve by valve driver is small flow status, and is adjusted tested
Part adjusting screw rod.
7. a kind of tightness test system according to claim 6, which is characterized in that the measured piece are as follows: pressure regulator or
Pilot valve.
8. a kind of tightness test system according to claim 1, which is characterized in that the control system further includes access
Man-machine interactive system；The man-machine interactive system is used to input the parameter and export printing test report of measured piece.
9. a kind of air tightness testing method based on tightness test system described in claim 4, which is characterized in that first by
One inlet pressure is adjusted to measured piece input end design maximum pressure, closes flow control valve for pipeline flow and is adjusted to zero, so
After close shut-off valve, after system pressure stablize after, simultaneously close off the first differential pressure transmitter enable valve opened with the second differential pressure transmitter
With valve, in dwell time t, the value of continuous acquisition the first differential pressure transmitter and the second differential pressure transmitter, and detect whether be more than
Amount of leakage, to judge whether that interior leakage or outward leakage has occurred.
10. a kind of pilot valve air tightness testing method of gas pressure regulator, governor according to claim 9, which is characterized in that when
The differential pressure transmitter reading of inlet end is positive, and the differential pressure transmitter of outlet side is positive；Then the tested pilot valve is internal leakage；When
The differential pressure transmitter reading of inlet end is positive, and the differential pressure transmitter of outlet side is negative；Then the measured piece is external leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810812974.8A CN109000859A (en) | 2018-07-23 | 2018-07-23 | A kind of tightness test system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810812974.8A CN109000859A (en) | 2018-07-23 | 2018-07-23 | A kind of tightness test system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109000859A true CN109000859A (en) | 2018-12-14 |
Family
ID=64596626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810812974.8A Pending CN109000859A (en) | 2018-07-23 | 2018-07-23 | A kind of tightness test system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109000859A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579329A (en) * | 2019-06-27 | 2019-12-17 | 中国空气动力研究与发展中心低速空气动力研究所 | Subsonic/transonic jet noise research test device |
| CN112664843A (en) * | 2021-01-14 | 2021-04-16 | 瓮福（集团）有限责任公司 | Leakage monitoring system of long-distance acidic wastewater conveying pipeline |
| CN112697348A (en) * | 2020-12-29 | 2021-04-23 | 东台市建东机械制造有限公司 | Fuel leakage test system of diesel engine fuel injection system |
| CN113720555A (en) * | 2021-09-26 | 2021-11-30 | 国家石油天然气管网集团有限公司 | Device and method for detecting internal leakage of ball valve of oil and gas pipeline |
| CN114018504A (en) * | 2021-11-03 | 2022-02-08 | 厦门理工学院 | Air tightness testing device and method |
| CN115060433A (en) * | 2022-06-27 | 2022-09-16 | 广东傲美智能科技有限公司 | Air tightness detection and debugging system and automatic debugging method for bubble water machine |
| CN110579329B (en) * | 2019-06-27 | 2024-04-19 | 中国空气动力研究与发展中心低速空气动力研究所 | Sub/transonic jet noise research test device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587619A (en) * | 1981-12-14 | 1986-05-06 | Scans Associates, Inc. | Method and apparatus for electronic leak testing |
| JP2002303560A (en) * | 2001-04-05 | 2002-10-18 | Kitz Corp | Method for testing airtightness performance |
| KR100551958B1 (en) * | 2004-10-12 | 2006-02-17 | 주식회사 지에스 | Gas leakage prevention system and method using the same |
| KR20110002409A (en) * | 2009-07-01 | 2011-01-07 | 주식회사 지앤매직 | Gas valve apparatus and the method thereof |
| CN102928181A (en) * | 2012-10-31 | 2013-02-13 | 中国石油化工股份有限公司 | Simulation system for inner leak detection of hydrocarbon valve |
| CN203203767U (en) * | 2013-04-01 | 2013-09-18 | 广州市上腾电子科技有限公司 | Leakage test system |
| CN103439125A (en) * | 2013-06-26 | 2013-12-11 | 安徽中科智能高技术有限责任公司 | Device and method for detecting pressure regulation performance of gas pressure regulator |
| CN104266805A (en) * | 2014-10-28 | 2015-01-07 | 中国核工业华兴建设有限公司 | Detection device and detection method for detecting air tightness of air-tight door of nuclear power plant by using constant pressure method |
| CN106525358A (en) * | 2016-12-20 | 2017-03-22 | 北京西门子西伯乐斯电子有限公司 | Valve pressure testing system and method |
| CN208420312U (en) * | 2018-07-23 | 2019-01-22 | 成都瑞特数字科技有限责任公司 | A kind of tightness test system |
-
2018
- 2018-07-23 CN CN201810812974.8A patent/CN109000859A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587619A (en) * | 1981-12-14 | 1986-05-06 | Scans Associates, Inc. | Method and apparatus for electronic leak testing |
| JP2002303560A (en) * | 2001-04-05 | 2002-10-18 | Kitz Corp | Method for testing airtightness performance |
| KR100551958B1 (en) * | 2004-10-12 | 2006-02-17 | 주식회사 지에스 | Gas leakage prevention system and method using the same |
| KR20110002409A (en) * | 2009-07-01 | 2011-01-07 | 주식회사 지앤매직 | Gas valve apparatus and the method thereof |
| CN102928181A (en) * | 2012-10-31 | 2013-02-13 | 中国石油化工股份有限公司 | Simulation system for inner leak detection of hydrocarbon valve |
| CN203203767U (en) * | 2013-04-01 | 2013-09-18 | 广州市上腾电子科技有限公司 | Leakage test system |
| CN103439125A (en) * | 2013-06-26 | 2013-12-11 | 安徽中科智能高技术有限责任公司 | Device and method for detecting pressure regulation performance of gas pressure regulator |
| CN104266805A (en) * | 2014-10-28 | 2015-01-07 | 中国核工业华兴建设有限公司 | Detection device and detection method for detecting air tightness of air-tight door of nuclear power plant by using constant pressure method |
| CN106525358A (en) * | 2016-12-20 | 2017-03-22 | 北京西门子西伯乐斯电子有限公司 | Valve pressure testing system and method |
| CN208420312U (en) * | 2018-07-23 | 2019-01-22 | 成都瑞特数字科技有限责任公司 | A kind of tightness test system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579329A (en) * | 2019-06-27 | 2019-12-17 | 中国空气动力研究与发展中心低速空气动力研究所 | Subsonic/transonic jet noise research test device |
| CN110579329B (en) * | 2019-06-27 | 2024-04-19 | 中国空气动力研究与发展中心低速空气动力研究所 | Sub/transonic jet noise research test device |
| CN112697348A (en) * | 2020-12-29 | 2021-04-23 | 东台市建东机械制造有限公司 | Fuel leakage test system of diesel engine fuel injection system |
| CN112664843A (en) * | 2021-01-14 | 2021-04-16 | 瓮福（集团）有限责任公司 | Leakage monitoring system of long-distance acidic wastewater conveying pipeline |
| CN113720555A (en) * | 2021-09-26 | 2021-11-30 | 国家石油天然气管网集团有限公司 | Device and method for detecting internal leakage of ball valve of oil and gas pipeline |
| CN114018504A (en) * | 2021-11-03 | 2022-02-08 | 厦门理工学院 | Air tightness testing device and method |
| CN115060433A (en) * | 2022-06-27 | 2022-09-16 | 广东傲美智能科技有限公司 | Air tightness detection and debugging system and automatic debugging method for bubble water machine |
| CN115060433B (en) * | 2022-06-27 | 2024-03-12 | 广东傲美智能科技有限公司 | Bubble water machine air tightness detection and debugging system and automatic debugging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109000859A (en) | A kind of tightness test system and method | |
| CN203203767U (en) | Leakage test system | |
| CN103837214B (en) | Combined container type gas flow detection device by pVTt method | |
| CN201207013Y (en) | Detecting machine for airtightness of oil tank | |
| CN1987412A (en) | SF6 gas density relay corrector and its detecting method | |
| CN103791985B (en) | Static mark side's calibrating installation and calibration steps thereof | |
| CN102536776A (en) | Water pump performance testing system for electric automobile and control method | |
| CN202928762U (en) | Portable tester for automatic quantification measurement of airtightness | |
| CA2868666A1 (en) | Manifold assembly for a portable leak tester | |
| CN102881120A (en) | Gas leakage alarm controller with intelligent alarm threshold value and control method thereof | |
| CN103698265A (en) | Internal corrosion testbed for engine coolant radiator tank | |
| CN208420312U (en) | A kind of tightness test system | |
| CN202510337U (en) | Performance testing system for direct-current water pump used in electric automobile | |
| CN100582711C (en) | Device for testing product air leakage | |
| CN203688420U (en) | Internal corrosion test bed for engine coolant radiating water tank | |
| CN106092754B (en) | A kind of liquefied petroleum gas steel cylinder water test unit and method | |
| CN213456019U (en) | Nuclear power unit penetration piece leakproofness test device | |
| CN205786119U (en) | A kind of liquefied petroleum gas steel cylinder water test unit | |
| CN202661237U (en) | Air tightness detection device for three-clack valve of puncture outfit | |
| CN109186857A (en) | A kind of interface module for pressure measurement | |
| CN209372333U (en) | A kind of airtight detecting apparatus for automatically recording data and uploading | |
| CN107796574A (en) | A kind of aircraft is airtight to check complex control system and its application method | |
| CN208443542U (en) | Automatic leak detector is used in the test of valve island | |
| CN202838621U (en) | Gas leakage alarm controller with intelligent alarm threshold | |
| CN208254957U (en) | STRENGTH TESTING OF PIPE LINES and data-storage system |
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 |