CN109520677A - Valve detecting system and valve detection testing stand - Google Patents

Valve detecting system and valve detection testing stand Download PDF

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Publication number
CN109520677A
CN109520677A CN201910064855.3A CN201910064855A CN109520677A CN 109520677 A CN109520677 A CN 109520677A CN 201910064855 A CN201910064855 A CN 201910064855A CN 109520677 A CN109520677 A CN 109520677A
Authority
CN
China
Prior art keywords
valve
measured
pipe
pipeline
pressure gauge
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
Application number
CN201910064855.3A
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Chinese (zh)
Inventor
高国有
何小三
覃秋
侯超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Auto Research Automobile Inspection Center (wuhan) Co Ltd
Original Assignee
China Auto Research Automobile Inspection Center (wuhan) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Auto Research Automobile Inspection Center (wuhan) Co Ltd filed Critical China Auto Research Automobile Inspection Center (wuhan) Co Ltd
Priority to CN201910064855.3A priority Critical patent/CN109520677A/en
Publication of CN109520677A publication Critical patent/CN109520677A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • G01M3/08Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
    • G01M3/086Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means

Abstract

A kind of valve detecting system and valve detection testing stand, are related to valve detection technical field.Valve detecting system, suitable for detecting the intensity and air-tightness of valve to be measured, comprising: the sealing frock for sealing valve to be measured, gas delivery system, test chamber and liquid conveying system, sealing frock has the sprocket hole being connected to the end of valve to be measured, gas delivery system is optionally connected to for treating side valve door conveying gas with sprocket hole, test chamber is configured to accommodate air-tightness of the valve to be measured to test valve to be measured, test chamber offers the opening for making valve to be measured enter or leave in test chamber, liquid conveying system is optionally connected to for treating side valve door conveying liquid to test the intensity of valve to be measured with sprocket hole.Valve detecting system and valve detection testing stand, it is simple and compact for structure, and the test of the intensity and leakproofness of valve to be measured can be carried out.

Description

Valve detecting system and valve detection testing stand
Technical field
This application involves valve detection technical fields, try in particular to a kind of valve detecting system and valve detection Test platform.
Background technique
It is supervised and is examined according to State Administration of Quality and Technical Supervision, Ministry of Industry and Information, the Ministry of Public Security, Department of Transportation and national quality Epidemic disease general bureau combines [2014] No. 74 documentation requirements of safety supervision general pipeline issued, and country reinforces producing tank vehicle access management, right In production and pot type HAZMAT vehicle requirement installation quick action emergency valve is produced.In quick action emergency valve QC/T932 standard, 5.8 The pressure testing of item needs to test the body strength, valve seal, seat leakage of valve body, this just needs us to have One test platform is able to satisfy current testing requirements.
It is existing on the market, lack such product.
Summary of the invention
The application provides a kind of valve detecting system and valve detection testing stand, simple and compact for structure, and can respectively into The test of the intensity and leakproofness of row valve to be measured.
According to a kind of valve detecting system of the application first aspect embodiment, suitable for detect the intensity of valve to be measured with And air-tightness comprising:
For sealing the sealing frock of valve to be measured, sealing frock has the sprocket hole being connected to the end of valve to be measured;
Gas delivery system, gas delivery system are optionally connected to for treating side valve door conveying gas with sprocket hole Body;
Test chamber, test chamber are configured to accommodate gas of the valve to be measured to test valve to be measured with gas delivery system cooperation Close property, test chamber offer the opening for making valve to be measured enter or leave in test chamber;
And liquid conveying system, liquid conveying system are optionally connected to for treating the conveying of side valve door with sprocket hole Liquid is to test the intensity of valve to be measured.
According to the valve detecting system of the embodiment of the present application, by way for the treatment of side valve door and conveying liquid, utilization is to be measured Hydraulic pressure inside valve applies pressure to it, reaches the requirement of pressure testing, and the valve body for treating side valve door carries out strength test, together When, valve to be measured and sealing frock are contained in water-filled test chamber, by conveying gas to the valve internal to be measured of sealing Body sees whether that bubble comes up and judges whether the air-tightness of valve body is good.
In addition, also there is following additional technical characteristic according to the valve detecting system of the embodiment of the present application:
With reference to first aspect, in some embodiments shown in the application, gas delivery system include for be connected to gas source with The first pipe of sprocket hole, first pipe are equipped with first pressure gauge and the first valve.
By the setting of first pressure gauge, monitor the air pressure for the gas being delivered in valve to be measured, prevent air pressure excessive or It is too small, while the first valve is connected to first pipe optionally with sprocket hole.
Optionally, first pipe is equipped with the first gas source processing three linked piece and the first check valve, first pressure gauge, the first valve Door and the first check valve are respectively arranged at the first gas source processing side of the three linked piece far from gas source, the import of the first check valve It is connected to gas source.Pass through above-mentioned setting, it is ensured that the precision of air-tight test prevents the impurity effect air-tightness in gas source Test as a result, also effectively prevent bleed pressure excessive simultaneously, certain loss is caused for first pipe or valve to be measured etc..
Wherein, it should be noted that according to actual demand, in the application, the first gas source handles three linked piece can be empty The replacement of at least one of air filter and pressure reducing valve, does not do specifically repeat herein.
With reference to first aspect, in some embodiments shown in the application, further include optionally connection first pipe with Pipeline is let out in test chamber, first pressure gauge is set to the interior connectivity part for letting out pipeline and first pipe, to detect in first pipe Discharge pressure.It inside lets out pipeline and first pressure gauge cooperates, the size for the pressure being delivered in valve to be measured can be regulated and controled, met Actual demand.
With reference to first aspect, in some embodiments shown in the application, gas delivery system further includes optionally connecting The second pipe in ventilation source and sprocket hole, second pipe are connect with first pipe by triple valve, for only make second pipe with Sprocket hole is connected to or is only connected to first pipe with sprocket hole, and triple valve is between the first valve and first pressure gauge, and second Pipeline is equipped with second pressure gauge, and second pressure gauge is between gas source and triple valve.
Wherein, second pipe and first pipe cooperate, and first pipe conveying high-pressure gas, second pipe conveys low pressure gas The low pressure of the low pressure gas of conveying can be effectively ensured by the cooperation of first pressure gauge and second pressure gauge in body, meet different Valve to be measured air-tightness monitoring demand, while above-mentioned set-up mode, effectively saving pipeline save cost, structure is more It is compact, it is convenient for integrated setting.
With reference to first aspect, in some embodiments shown in the application, liquid conveying system includes optionally being connected to The third pipeline of test chamber and sprocket hole, third pipeline are equipped with third pressure gauge and water pump, and it is remote that third pressure gauge is located at water pump Side from test chamber;By the setting of third pressure gauge, convenient for the pressure of real-time monitoring liquid, and then obtain in valve to be measured Pressure, obtain its strength test as a result, makes structure more compact simultaneously, is convenient for integrated setting.
Optionally, third pipeline is equipped with surge tank, and surge tank is between water pump and third pressure gauge;
Optionally, third pipeline is equipped with overflow valve, and overflow valve is between water pump and surge tank.
With reference to first aspect, in some embodiments shown in the application, third pipeline is connected to first pipe, first pipe Equipped with the 5th valve, the connectivity part of third pipeline and first pipe is between the first valve and the 5th valve.
It optionally, further include multi-purpose station pipeline, multi-purpose station pipeline is equipped with the 6th valve and the 4th pressure gauge, multi-purpose station pipeline and the The connectivity part of the connection of one pipeline, multi-purpose station pipeline and third pipeline is between the first valve and the 5th valve;
Optionally, the connectivity part of multi-purpose station pipeline and the 4th pressure gauge is equipped with the pipe that leaks, and the pipe that leaks is equipped with the 7th valve.
It with reference to first aspect, further include the 4th pipeline, the driving gas of valve to be measured in some embodiments shown in the application The 4th pipeline of room is optionally connected to gas source, is used to open or closes the flap of the valve to be measured;
It preferably, further include air supply system and cylinder, cylinder and valve to be measured are sequentially connected, for driving valve to be measured It is contained in or leaves test chamber, air supply system is optionally connected to gas source to supply to cylinder.
According to the valve detection testing stand of the application second aspect embodiment comprising:
The valve detecting system that rack, the first aspect for being set to rack provide, and it is set to the test box of rack, it surveys Trying case has test chamber.
According to the valve detection testing stand of the embodiment of the present application, using valve detecting system as above, simple with structure, It is at low cost, installation procedure is few, effect easy to use.
It further include lifting device, lifting device and sealing work in some embodiments shown in the application in conjunction with second aspect Load connects for driving sealing frock to go up and down, so that valve to be measured enters or leaves in test chamber.By the setting of lifting device, It effectively obtains driving side valve door to enter or leave in test chamber, saves labour cost.
In conjunction with second aspect, in some embodiments shown in the application, sprocket hole includes that the first sprocket hole and second are defeated Send hole, sealing frock includes the first mounting plate along the setting of the first preset direction, the first mounting plate offer the first mounting hole with And first sprocket hole, the first mounting hole are used to that valve to be measured to can be selectively fixed to the first mounting plate through the first fastener;
And the second mounting plate along the setting of the second preset direction, the second mounting plate offer the second mounting hole and second Sprocket hole, the second mounting hole are used to that valve to be measured to can be selectively fixed to the second mounting plate through the second fastener.
Under the conditions of above-mentioned setting, it can be directed to different valves, can be effectively fixed, while fixed effect is good, So that the process of hermeticity experiment and intensity experiment is more accurate.
The additional aspect and advantage of the application will be set forth in part in the description, and will partially become from the following description It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the valve detection testing stand perspective view of the embodiment of the present application;
Fig. 2 is the structural schematic diagram of the embodiment of the present application valve detection testing stand;
Fig. 3 is the perspective view of the lifting device in some embodiments of the application;
Fig. 4 is the structural schematic diagram of the embodiment of the present application valve detecting system;
The structural schematic diagram of Fig. 5 the embodiment of the present application gas delivery system.
Icon: 10- valve detection testing stand;100- rack;101- pedestal;102- traveling wheel;103- handle;120- operation Platform;The first operating surface of 121-;The second operating surface of 123-;125- joint face;127- installation cavity;200- test box;210- opening; 300- sealing frock;The first mounting plate of 310-;The first mounting hole of 311-;The first sprocket hole of 313-;The second mounting plate of 320-;321- Second mounting hole;The second sprocket hole of 323-;400- lifting device;410- cylinder;411- interconnecting piece;413- limited block;420- is passed Motivation structure;421- movable pulley;423- traction rope;430- guide post;431- guide sleeve;500- valve detecting system;501- pressure gauge; 510- first pipe;511- first pressure gauge;The first valve of 513-;The first gas source of 514- handles three linked piece;515- first is unidirectional Valve;The 5th valve of 516-;Pipeline is let out in 520-;The second valve of 521-;530- second pipe;531- triple valve;533- second is pressed Power table;The second gas source of 534- handles three linked piece;535- second one-way valve;537- third valve;540- third pipeline;541- third Pressure gauge;543- water pump;545- surge tank;546- overflow pipe;547- overflow valve;548- third check valve;550- multi-purpose station pipeline; The 6th valve of 551-;The 4th pressure gauge of 553-;560- leaks pipe;The 7th valve of 561-;The 4th pipeline of 570-;571- third gas source Handle three linked piece;The 8th valve of 573-;The 9th valve of 574-;The 5th pipeline of 580-;The tenth valve of 581-;582- reversal valve; 600- valve to be measured;610- drives gas chamber.
Specific embodiment
Embodiments herein is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing The embodiment stated is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
In this application, in the case where not contradiction or conflict, all embodiments, embodiment and the feature of the application It can be combined with each other.In this application, conventional unit, component etc., both can be commercially available, can also be according to the application public affairs The content self-control opened.In this application, in order to protrude the emphasis of the application, to some conventional operations and unit, component The omission of progress, or be only briefly described.Term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot understand For indication or suggestion relative importance.
Embodiment
Fig. 1 and Fig. 2 is please referred to, the application provides a kind of valve detection testing stand 10 comprising sealing frock 300, machine Frame 100, test box 200 and valve detecting system 500.
Sealing frock 300 is for sealing valve 600 to be measured, and sealing frock 300 is connect with valve 600 to be measured, sealing frock 300 have the sprocket hole being connected to the end of valve 600 to be measured.Test box 200 is set to rack 100, and test box 200, which has, to be used In accommodating valve 600 to be measured to test the test chamber of the air-tightness of valve 600 to be measured, test chamber, which offers, makes valve 600 to be measured Into or leave opening 210 in test chamber.Valve detecting system 500 is suitable for detecting the intensity and gas of valve 600 to be measured Close property, valve detecting system 500 are also disposed on rack 100.
Above-mentioned valve detection testing stand 10 is simple and compact for structure, is integrally formed setting, can carry out valve 600 to be measured respectively Intensity and leakproofness test, operate it is convenient.Wherein, valve 600 to be measured is, for example, quick action emergency valve etc..
Rack 100 has pedestal 101, and test box 200 is fixedly arranged on pedestal 101, for example, by using the mode of welding, wherein open Mouth 210 is set to side of the test chamber far from ground.
For the ease of mobile valve Detecting data 10, optionally, pedestal 101 is equipped with traveling wheel 102, and traveling wheel 102 Pedestal 101 is rotatably arranged in close to the side on ground.Meanwhile bracket can also be equipped with handle 103, convenient for holding with movement Valve detection testing stand 10.
There are many set-up modes of sealing frock 300, such as in some embodiments shown in the application, and sprocket hole includes the One sprocket hole 313 and the second sprocket hole 323, sealing frock 300 include the first mounting plate along the setting of the first preset direction 310, the first mounting plate 310 offers the first mounting hole 311 and the first sprocket hole 313, and the first mounting hole 311 is used for through first Valve 600 to be measured can be selectively fixed to the first mounting plate 310 by fastener (not shown);And it is set along the second preset direction The second mounting plate 320 set, the second mounting plate 320 offer the second mounting hole 321 and the second sprocket hole 323, the second installation Hole 321 is used to that valve 600 to be measured to can be selectively fixed to the second mounting plate 320 through the second fastener (not shown).
Wherein, the first preset direction is vertical with the second preset direction or near normal, meanwhile, optionally, the first mounting hole 311 quantity is multiple, and the generally circular array distribution of multiple first mounting holes 311 (be suitable for flanged joint), is formed First mounting hole group, with 600 flanged joint of valve to be measured, while in order to adapt to various sizes of valve to be measured 600.
Optionally, the quantity of the first mounting hole group is at least two groups, and at least two groups the first mounting hole group is arranged concentrically with shape The set-up mode of concentric circle, wherein the radius of two adjacent the first mounting hole groups is different, meanwhile, each first mounting hole The quantity of the first mounting hole 311 in 311 groups can be identical, and arbitrary neighborhood in every group is adjusted according to actual demand at this time The distance between two first mounting holes 311;The quantity of the first mounting hole 311 in 311 groups of each first mounting hole can also be with Difference adjusts the distance between two the first mounting holes 311 of arbitrary neighborhood in every group according to actual demand at this time, to meet The demand of the flanged joint of different valves to be measured 600, does not do specifically repeat herein.Optionally, the axis of the first sprocket hole 313 Line is located at the center point of the circle of first 311 groups of compositions of mounting hole, and gas transmission effect is good.
Optionally, axis of the axis of the first mounting hole 311 on the first mounting plate 310 perpendicular to test chamber, the second peace The axis of the second mounting hole 321 in loading board 320 is parallel to the axis of test chamber, and the second mounting plate 320 is located at the first installation Plate 310 is close to the side of pedestal 101.
Optionally, in some other embodiments shown in the application, sealing frock 300 can also only include the first mounting plate 310, wherein the axis of each first mounting hole 311 and the first sprocket hole 313 can be vertical or flat in the first mounting hole group Row is in the axis of test chamber.
It optionally, further include sealing in order to further increase sealing frock 300 for the sealing effect of valve 600 to be measured Pad (not shown), wherein gasket is set to the junction of sealing frock 300 Yu valve 600 to be measured, fit sealing tooling 300 After valve 600 to be measured, gasket is made effectively to seal the junction of valve 600 and sealing frock 300 to be measured.
Referring to Fig. 3, further including lifting device 400 in some embodiments shown in the application optionally.
Specifically, valve 600 to be measured is installed on sealing frock 300, and lifting device 400 connect with sealing frock 300 and is used for It drives sealing frock 300 to go up and down, so that valve to be measured 600 enters through opening 210 or leaves in test chamber, effectively saves manpower.
Elevating mechanism includes power mechanism and transmission mechanism 420, and power mechanism passes through transmission mechanism 420 and sealing frock 300 transmission connections, wherein power mechanism is, for example, at least one of cylinder 410, hydraulic cylinder or motor etc., transmission device example For example at least one of screw rod transmission structure, gear transmission structure or V belt translation pass through the company of transmission device and power mechanism It connects, and then drives the lifting of sealing frock 300.
Optionally, in some embodiments shown in the application, please continue to refer to Fig. 3, power mechanism is cylinder 410, transmission Mechanism 420 includes movable pulley 421 and traction rope 423, wherein cylinder 410 is set to pedestal 101, the piston rod of cylinder 410 and dynamic Pulley 421 rotatably connects, and the both ends of traction rope 423 connect with sealing frock 300 and pedestal 101 respectively and make traction rope 423 tensionings, movable pulley 421 are configured to that traction rope 423 is made to continue the outer rim for being slidably embedded at movable pulley 421.Due to leading One end of messenger 423 is connect with pedestal 101, thus risen or fallen by the piston rod driving pulley 421 of cylinder 410 drive it is close Envelope tooling 300, which synchronizes, to be risen or fallen, and under this condition, cylinder 410 and transmission mechanism 420 correspond.
In some specific embodiments shown in the application, the end of the piston rod of cylinder 410 is equipped with interconnecting piece 411, even Socket part 411 is equipped with groove, and 421 part of movable pulley is embedded in groove, and movable pulley 421 stretches out groove far from the side of pedestal 101, Movable pulley 421 is connect by rotation axis with interconnecting piece 411.The outer rim of movable pulley 421 is equipped with for installing traction rope 423 simultaneously Sliding slot, the sliding of traction rope 423 is embedded in sliding slot, in order to guarantee that traction rope 423 is persistently embedded at the outer rim of movable pulley 421, even Socket part 411 is equipped with limited block 413, and limited block 413 is set to side of the movable pulley 421 far from pedestal 101, and limited block 413 is used for Traction rope 423 is prevented to be detached from the outer rim of movable pulley 421.
In order to guarantee smoothness that sealing frock 300 rises or falls, optionally, the number of cylinder 410 and transmission mechanism 420 Amount is at least two, such as two, three or four etc., does not do specific restriction herein.
In order to further increase the smoothness that sealing frock 300 rises or falls, prevent from sending out in the actual use process Raw vibration is shaken, and causes sealing frock 300 and the junction tightness of valve 600 to be measured bad, generates experimental error, optional Ground, further includes guiding mechanism, and guiding mechanism includes guide post 430 and guide sleeve 431.
Specifically, guide post 430 is longitudinally disposed in pedestal 101, and the axis of guide post 430 is perpendicular to pedestal 101, guide sleeve 431 It being fixedly arranged on sealing frock 300, such as guide sleeve 431 is fixedly arranged on the first mounting plate 310, guide sleeve 431 is slidably located on guide post 430, And then limit the stability that sealing frock 300 is moved back and forth in longitudinal direction, wherein the quantity of guiding mechanism can be with driver Structure 420 corresponds, and improves the smoothness of movement.
In order to improve whole valve detection testing stand 10 mechanism compactness, optionally, guiding mechanism, power mechanism And transmission mechanism 420 is all set in test chamber, the longitudinally disposed bottom wall in test chamber of guide post 430, power mechanism setting In the bottom wall of test chamber.At this point, in actual use process, it should be noted that the waterproofness of power mechanism.
Valve detecting system 500 includes gas delivery system and liquid conveying system.
Wherein, gas delivery system is optionally connected to sprocket hole conveys gas for treating side valve door 600, then By the way that the valve to be measured 600 of sealing to be contained in water-filled test chamber, bubble generation is seen whether, to test to side valve The air-tightness of door 600.Liquid conveying system is optionally connected to sprocket hole conveys liquid, benefit for treating side valve door 600 Give its to apply pressure with the hydraulic pressure of 600 the inside of valve to be measured, reach the requirement of pressure testing, treat the valve body of side valve door 600 into Row strength test.
Gas delivery system and liquid conveying system are made of pipeline, pressure gauge 501 and valve.Pressure gauge 501 Including multiple, for ease of description, below using term first, second, third and the 4th for distinguishing pressure gauge 501.Pressure The setting of power table 501 improves the safety of experiment for monitoring the pressure in pipeline while improving the accuracy of experiment.
Please refer to Fig. 4 and Fig. 5, in some embodiments provided by the present application, gas delivery system includes for being connected to gas The first pipe 510 in source and sprocket hole, first pipe 510 are equipped with first pressure gauge 511 and the first valve 513, pass through first The setting of pressure gauge 511 monitors the pressure for the gas being delivered in valve 600 to be measured, prevents pressure excessive or too small, while the One valve 513 is connected to first pipe 510 optionally with sprocket hole.
Optionally, first pipe 510 is equipped with the first gas source processing three linked piece 514 and the first check valve 515, first pressure gauge 511, the first valve 513 and the first check valve 515 are respectively arranged at one of the first gas source processing three linked piece 514 far from gas source The import of side, the first check valve 515 is connected to gas source.
Pass through above-mentioned setting, it is ensured that the precision of air-tight test prevents the impurity effect air-tightness in gas source from trying It is testing as a result, also effectively prevent pressure excessive simultaneously, certain loss is caused for first pipe 510 or valve to be measured 600 etc..
Wherein, it should be noted that according to actual demand, in the application, the first gas source handles three linked piece 514 can be by The replacement of at least one of air filter and pressure reducing valve, does not do specifically repeat herein.
Optionally, valve detecting system 500 further include in let out pipeline 520, inside let out pipeline 520 and first pipe 510 be optional It is connected to selecting property, first pressure gauge 511 is set to the interior connectivity part for letting out pipeline 520 and first pipe 510 for detecting the first pipe In other words discharge pressure in road 510 inside lets out pipeline 520 and first pressure gauge 511 cooperates, can regulate and control to be delivered to side valve The size of Fluid pressure in door 600, meets actual demand.
Optionally, it inside lets out pipeline 520 to be connected to far from one end of first pipe 510 with test chamber, for by extra fluid It is delivered in test chamber, pressure release while recycling fluid, optionally, inside lets out pipeline 520 equipped with the second valve 521, for controlling Inside let out whether pipeline 520 is connected to.
In some embodiments provided by the present application, gas delivery system further includes second pipe 530, and second pipe 530 can Selectively communicate with gas source and sprocket hole, second pipe 530 is connect with first pipe 510 by triple valve 531, for only making the Two pipelines 530 are connected to sprocket hole or first pipe 510 is connected to sprocket hole, and triple valve 531 is located at the first valve 513 and first Between pressure gauge 511, second pipe 530 is equipped with second pressure gauge 533, second pressure gauge 533 be located at gas source and triple valve 531 it Between.
Wherein, second pipe 530 and first pipe 510 cooperate, 510 conveying high-pressure gas of first pipe, second pipe 530 The low pressure of conveying can be effectively ensured by the cooperation of first pressure gauge 511 and second pressure gauge 533 by conveying low-pressure gas The low pressure of gas meets the demand of the air-tightness monitoring of different valves to be measured 600, while above-mentioned set-up mode, effectively saves pipe Cost is saved in road, and structure is more compact, is convenient for integrated setting.
Hold above-mentioned, first pipe 510 is used for conveying high-pressure gas, and second pipe 530 meets for conveying low pressure gas to side valve Door 600, such as quick action emergency valve in pilot project it is corresponding suppress the different demand of pressure, also meet different valves to be measured The demand of 600 different pressure values prevents from damaging valve 600 to be measured.Based on this, second pipe 530 is answered with first pipe 510 This is matched with the range of corresponding pressure gauge 501 respectively, that is to say that first pressure gauge 511 is MPa grades of high-pressure manometers, the Two pressure gauges 533 are KPa grades of low pressure gauges.
Second pipe 530 can be equipped with the second gas source and handle three linked piece 534, wherein second pressure gauge 533 is located at the second gas Source handles side of the three linked piece 534 far from gas source, effectively filtering gas, prevents the valve 600 to be measured of the impurity in gas, influences reality The precision tested, while when the gas in gas source is high pressure gas, it can be depressurized, improve the safety of experiment.
Second pipe 530 is also provided with second one-way valve 535 and third valve 537, wherein second one-way valve 535 And third valve 537 is located at side of the second pressure gauge 533 far from the second gas source processing three linked piece 534, and third valve Gas backflow can be effectively prevented by the setting of second one-way valve 535 in the outlet end that door 537 is located at second one-way valve 535, It damages second pressure gauge 533 and the second gas source handles three linked piece 534.
In some embodiments provided by the present application, liquid conveying system includes third pipeline 540, and third pipeline 540 is optional It is connected to selecting property fluid supply and sprocket hole, third pipeline 540 is equipped with third pressure gauge 541 and water pump 543, third pressure gauge 541 are located at side of the water pump 543 far from fluid supply;By conveying liquid, the pressure test of valve 600 to be measured is effectively carried out, together When, the setting of third pressure gauge 541 convenient for the pressure of real-time monitoring liquid, and then obtains the pressure in valve 600 to be measured, obtains To its strength test as a result, improving the safety of experiment simultaneously.
Specifically, third pipeline 540 is connected to far from one end of sprocket hole with test chamber, and test chamber can be according to actual need It asks, carries out adding water by opening 210, then the water in test chamber is delivered to valve to be detected by water pump 543.
Optionally, third pipeline 540 is equipped with surge tank 545, surge tank 545 be located at water pump 543 and third pressure gauge 541 it Between, it can be acted on the pressure of buffered water, keep pressure steady.
Optionally, third pipeline 540 be equipped with overflow valve 547, overflow valve 547 between water pump 543 and surge tank 545, The balance of the pressure in third pipeline 540 is effectively ensured, prevents pressure in third pipeline 540 excessive, optionally, third pipeline 540 are equipped with the overflow pipe 546 communicated therewith, and overflow valve 547 is set to overflow pipe 546, wherein overflow pipe 546 is far from third pipe The side in road 540 is connected to test chamber, is used for recycle-water.
The component that third pipeline 540 is arranged is destroyed in order to prevent, and third pipeline 540 is equipped with third check valve 548, wherein The import of third check valve 548 is connected to test chamber, and the outlet of third check valve 548 is connected to sprocket hole, wherein third is unidirectional Valve 548 is located at third pressure gauge 541 close to the side of sprocket hole.
Wherein, optionally, in order to guarantee that the pressure of 543 import of water pump can automatically adjust, guarantee pressure in water circuit system It keeps in a certain range, third pressure gauge 541 and water pump 543 are electrically connected, and by the way that pressure limit is arranged, can control water pump Then 543 test pressure opens 548 energy discharge pressure of third check valve, that is to say that third pressure gauge 541 is sent out with signal Module (not shown) is penetrated, water pump 543 has the signal receiving module being electrically connected to each other and controller (not shown), signal structure Module is used to receive the signal emitted from signal emission module and is transferred to controller, and controller is electrically connected to a power source, into And regulate and control the pressure limit of water pump 543.Wherein, third pressure gauge 541 and 543 circuit connecting mode of water pump can directly be bought in city Face has the third pressure gauge 541 and water pump 543 for relationship of working in coordination, and does not do specifically repeat herein.Third pressure gauge 541 is electricity Contact pressure table.
In some embodiments provided by the present application, third pipeline 540 is connected to first pipe 510, wherein first pipe 510 are equipped with the 5th valve 516, and third pipeline 540 and 510 connectivity part of first pipe are located at the first valve 513 and the 5th valve 516 Between.By the way that third pipeline 540 to be connected to first pipe 510, keeps structure more compact, be convenient for integrated setting.
It optionally, further include multi-purpose station pipeline 550, multi-purpose station pipeline 550 is equipped with the 6th valve 551 and the 4th pressure gauge 553, Multi-purpose station pipeline 550 is connected to first pipe 510, and the connectivity part of multi-purpose station pipeline 550 and third pipeline 540 is located at the first valve 513 And the 5th between valve 516, wherein multi-purpose station pipeline 550 can be suppressed by water pump 543 toward outside, can be for other equipment (such as Manhole cover pressure testing device etc.) provide pressure source tested.
Optionally, the connectivity part of multi-purpose station pipeline 550 and the 4th pressure gauge 553 is equipped with the pipe 560 that leaks, and the pipe 560 that leaks is equipped with 7th valve 561, wherein the pipe 560 that leaks is connected to far from the side of multi-purpose station pipeline 550 with test chamber, for recycling fluid.
In some embodiments provided by the present application, valve 600 to be measured is pneumatic operated valve, and valve detecting system 500 includes the 4th Pipeline 570, gas source is optionally connected to the driving gas chamber 610 of valve 600 to be measured through the 4th pipeline 570, to be used to open Or close valve 600 to be measured.Such as gas source is connected to by the 4th pipeline 570, to open valve 600 to be measured, gas source is closed, in nothing Under the action of pressure, spring return function closes valve 600 to be measured, and flap is driven to be located at the partial turn outside valve 600 to be measured, Flap is driven to open.
Wherein, the 4th pipeline 570 can be equipped with third gas source processing three linked piece 571 and the 8th valve 573, wherein the 8th Valve 573 is located at third gas source processing side of the three linked piece 571 far from gas source, wherein optionally, the 4th pipeline 570 is located at the The 9th valve 574, the 9th valve 574 such as select button type or knob-style two are also provided between eight valves 573 and flap Position mechanical valve, for controlling the opening and closing of flap, convenient for operation.
It further include air supply system in some embodiments shown in the application, air supply system is optionally connected to gas source To be supplied to cylinder 410.
Specifically, air supply system includes the 5th pipeline 580, wherein the 5th pipeline 580 is equipped with the tenth valve 581, the tenth valve Between the 9th valve 574 and valve to be measured 600, the 5th pipeline 580 is optionally connected to gas source to cylinder door 581 410 gas supply.Optionally, the 5th pipeline 580 is connected to the 4th pipeline 570, the connectivity part of the 5th pipeline 580 and the 4th pipeline 570 It is handled between three linked piece 571 and the 8th valve 573 positioned at third gas source, effectively improves space utilization degree.
Wherein, the 5th pipeline 580 is also provided with envelope palm hand-operated direction valve in reversal valve 582, such as 3 position-5 way 582, wherein reversal valve 582 is between the 9th valve 574 and cylinder 410, and then passes through the regulation of reversal valve 582, carries out gas The liter of cylinder 410, the regulation for stopping and dropping.
Further, for the ease of being operated in actual use process, optionally, Fig. 1 and Fig. 2 is please referred to, propped up It is provided with station 120, station 120 has spaced first operating surface 121 and the second operating surface 123, wherein the One operating surface 121 and the second operating surface 123 are connected by joint face 125, wherein the first operating surface 121 is located at the second operation Face 123 is close to the side of pedestal 101.
For the ease of observation, first pressure gauge 511, second pressure gauge 533, third pressure gauge 541 and the 4th pressure gauge 553 dial plate is respectively arranged at joint face 125, convenient for intuitive observation.
Installation cavity 127 is equipped between first operating surface 121 and pedestal 101, wherein liquid conveying system and gas conveying Component in system, such as water pump 543, the first gas source processing three linked piece 514, the second gas source handle three linked piece 534, third gas source Processing three linked piece 571 etc. is all set in installation cavity 127, prevents dust stratification, while overall beautiful.
Meanwhile first valve 513, the second valve 521, third valve 537, the 5th valve 516, the 6th valve the 551, the 7th Valve 561, the 8th valve 573, the 9th valve 574, the tenth valve 581, triple valve 531 and reversal valve 582 all can be electricity Magnet valve or hand-operated valve, wherein the first valve 513, the second valve 521, third valve 537, the 5th valve 516, the 6th valve 551, the 7th valve 561, the 8th valve 573, the 9th valve 574, the tenth valve 581, triple valve 531 and reversal valve 582 divide It is not set to the first operating surface 121, the second operating surface 123 or the first joint face 125, convenient for operation, meanwhile, above-mentioned first valve 513, the second valve 521, third valve 537, the tenth valve 581, the 5th valve 516, the 6th valve 551, the 7th valve 561, 8th valve 573, the 9th valve 574, triple valve 531 and reversal valve 582 or electric control solenoid valve, by the way that valve is arranged Controller is electrically connected valve positioner with above-mentioned each valve, and then realizes more intelligent operation.
Valve detection testing stand 10 is also provided with for controlling gas source and first pipe 510, second pipe 530 and the The air switch (not shown) whether four pipelines 570 are connected to, prevents during gas delivery system does not use, gas into Entering the first gas source processing three linked piece 514, the second gas source processing three linked piece 534 and third gas source processing three linked piece 571 etc. makes it It is lost, while avoiding that there is larger pressure in first pipe 510, second pipe 530 and the 4th pipeline 570, reduce valve The service life of door Detecting data 10, influences the precision of its test.
To sum up, valve detecting system provided by the present application and valve detection testing stand, it is simple and compact for structure, and can distinguish Carry out the test of the intensity and leakproofness of valve to be measured.
The above is only preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification, Equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (10)

1. a kind of valve detecting system, suitable for detecting the intensity and air-tightness of valve to be measured characterized by comprising
For sealing the sealing frock of the valve to be measured, the sealing frock has to be connected to the end of the valve to be measured Sprocket hole;
Gas delivery system, the gas delivery system are optionally connected to the sprocket hole for the valve to be measured Convey gas;
Test chamber, the test chamber are configured to accommodate the valve to be measured with described to be measured with gas delivery system cooperation test The air-tightness of valve, the test chamber, which offers, makes the valve to be measured enter or leave the opening in the test chamber;
And liquid conveying system, the liquid conveying system are optionally connected to the sprocket hole for described to be measured Valve conveys liquid to test the intensity of the valve to be measured.
2. valve detecting system according to claim 1, which is characterized in that gas delivery system includes for being connected to gas source With the first pipe of sprocket hole, the first pipe is equipped with first pressure gauge and the first valve;
Preferably, the first pipe is equipped with the first gas source processing three linked piece and the first check valve, the first pressure gauge, described First valve and first check valve are respectively arranged at the first gas source processing side of the three linked piece far from gas source, described The import of first check valve is connected to the gas source.
3. valve detecting system according to claim 2, which is characterized in that further include optionally being connected to described first Pipeline and the interior of the test chamber let out pipeline, and the first pressure gauge is set to the company that pipeline Yu the first pipe are let out in described Logical place, to detect the discharge pressure in first pipe.
4. valve detecting system according to claim 2, which is characterized in that the gas delivery system further includes that may be selected Property be connected to the second pipe of the gas source Yu the sprocket hole, the second pipe and the first pipe and pass through triple valve company It connects, for being connected to the second pipe with the sprocket hole or being connected to the first pipe with the sprocket hole, institute Triple valve is stated between first valve and the first pressure gauge, the second pipe is equipped with second pressure gauge, described Second pressure gauge is between the gas source and the triple valve.
5. valve detecting system according to claim 2, which is characterized in that the liquid conveying system includes alternative Ground is connected to the third pipeline of test chamber and sprocket hole, and the third pipeline is equipped with third pressure gauge and water pump, the third pressure Power epitope is in side of the water pump far from test chamber;
Preferably, the third pipeline is equipped with surge tank, and the surge tank is between the water pump and the third pressure gauge;
Preferably, the third pipeline is equipped with overflow valve, and the overflow valve is between the water pump and the surge tank.
6. valve detecting system according to claim 5, which is characterized in that the third pipeline and the first pipe connect Logical, the first pipe is equipped with the 5th valve, and the third pipeline and the connectivity part of the first pipe are located at first valve Between door and the 5th valve;
It preferably, further include multi-purpose station pipeline, the multi-purpose station pipeline is equipped with the 6th valve and the 4th pressure gauge, the multi-purpose station pipeline It is connected to the first pipe, the connectivity part of the multi-purpose station pipeline and the third pipeline is located at first valve and described the Between five valves;
Preferably, the connectivity part of the multi-purpose station pipeline and the 4th pressure gauge is equipped with the pipe that leaks, and the pipe that leaks is equipped with the 7th Valve.
7. valve detecting system according to claim 1, which is characterized in that it further include the 4th pipeline, the valve to be measured Driving gas chamber be optionally connected to gas source through the 4th pipeline, be used to open or close the flap of the valve to be measured;
It preferably, further include air supply system and cylinder, the cylinder and the valve to be measured are sequentially connected, described for driving Valve to be measured is contained in or leaves the test chamber, and the air supply system is optionally connected to the gas source to the gas Cylinder gas supply.
8. a kind of valve detection testing stand characterized by comprising
Rack, the valve detecting system as described in claim 1-7 any one for being set to the rack, and it is set to institute The test box of rack is stated, the test box has the test chamber.
9. valve detection testing stand according to claim 8, which is characterized in that it further include lifting device, the lifting dress It sets and is connect with the sealing frock for driving the sealing frock to go up and down, so that the valve to be measured enters or leave the survey It tries intracavitary.
10. valve detection testing stand according to claim 9, which is characterized in that the sprocket hole includes the first sprocket hole And second sprocket hole, the sealing frock include the first mounting plate along the setting of the first preset direction, first mounting plate The first mounting hole and first sprocket hole are offered, the first mounting hole is used for can by the valve to be measured through the first fastener It is selectively fixed on first mounting plate;
And the second mounting plate along the setting of the second preset direction, second mounting plate offer the second mounting hole and described Second sprocket hole, second mounting hole are used to that the valve to be measured to can be selectively fixed to described the through the second fastener Two mounting plates.
CN201910064855.3A 2019-01-23 2019-01-23 Valve detecting system and valve detection testing stand Pending CN109520677A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110174310A (en) * 2019-06-24 2019-08-27 合肥科大立安安全技术有限责任公司 A kind of safe and reliable automatic valve intensity and sealing property testing equipment
CN110441001A (en) * 2019-05-20 2019-11-12 北京清佰华通科技有限公司 Automatic gas density test system
CN110702339A (en) * 2019-10-31 2020-01-17 苏州长光华芯光电技术有限公司 Air tightness leakage detection device and method
CN110836751A (en) * 2019-11-29 2020-02-25 陈美香 Lower switch valve device for detecting air tightness of precise three-way valve
CN112504596A (en) * 2020-11-06 2021-03-16 北京宇航系统工程研究所 Triaxial vibration test device for valve
CN112557023A (en) * 2020-11-27 2021-03-26 中船动力研究院有限公司 GAV test fixture and GAV test bench
CN114252214A (en) * 2021-12-23 2022-03-29 中国矿业大学 Constant pressure experiment-based pressure balance valve leakage amount detection device and method
CN114323629A (en) * 2020-09-29 2022-04-12 上海廷本流体控制有限公司 Stop valve pressure test frock

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1254092A (en) * 1999-10-23 2000-05-24 哈尔滨铁路局工业总公司科学技术研究所 Safety attachment detection system of liquefied gas transportation tank car
CN202033253U (en) * 2010-12-09 2011-11-09 苏州锦鹏机电设备制造有限公司 Valve pressure testing medium system
CN104266807A (en) * 2014-10-20 2015-01-07 苏州锦鹏机电设备制造有限公司 Method for detecting valve air tightness through high-flow high-voltage gas source
CN204128762U (en) * 2014-09-24 2015-01-28 济南蓝信电子设备有限公司 A kind of valve examination platform
CN106441738A (en) * 2016-08-23 2017-02-22 岳阳筑盛阀门管道有限责任公司 Efficient angle valve pressure test device
CN206095596U (en) * 2016-08-25 2017-04-12 陕西航天机电环境工程设计院有限责任公司 Intelligent valve examines test table
CN106840552A (en) * 2017-03-30 2017-06-13 天津大学 A kind of quick action emergency valve overall calibration system
CN207850621U (en) * 2017-11-20 2018-09-11 广州特种承压设备检测研究院 The test device of Plastic valve
CN209166741U (en) * 2019-01-23 2019-07-26 中汽研汽车检验中心(武汉)有限公司 Valve detecting system and valve detection testing stand

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1254092A (en) * 1999-10-23 2000-05-24 哈尔滨铁路局工业总公司科学技术研究所 Safety attachment detection system of liquefied gas transportation tank car
CN202033253U (en) * 2010-12-09 2011-11-09 苏州锦鹏机电设备制造有限公司 Valve pressure testing medium system
CN204128762U (en) * 2014-09-24 2015-01-28 济南蓝信电子设备有限公司 A kind of valve examination platform
CN104266807A (en) * 2014-10-20 2015-01-07 苏州锦鹏机电设备制造有限公司 Method for detecting valve air tightness through high-flow high-voltage gas source
CN106441738A (en) * 2016-08-23 2017-02-22 岳阳筑盛阀门管道有限责任公司 Efficient angle valve pressure test device
CN206095596U (en) * 2016-08-25 2017-04-12 陕西航天机电环境工程设计院有限责任公司 Intelligent valve examines test table
CN106840552A (en) * 2017-03-30 2017-06-13 天津大学 A kind of quick action emergency valve overall calibration system
CN207850621U (en) * 2017-11-20 2018-09-11 广州特种承压设备检测研究院 The test device of Plastic valve
CN209166741U (en) * 2019-01-23 2019-07-26 中汽研汽车检验中心(武汉)有限公司 Valve detecting system and valve detection testing stand

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441001A (en) * 2019-05-20 2019-11-12 北京清佰华通科技有限公司 Automatic gas density test system
CN110174310A (en) * 2019-06-24 2019-08-27 合肥科大立安安全技术有限责任公司 A kind of safe and reliable automatic valve intensity and sealing property testing equipment
CN110702339A (en) * 2019-10-31 2020-01-17 苏州长光华芯光电技术有限公司 Air tightness leakage detection device and method
CN110702339B (en) * 2019-10-31 2021-11-26 苏州长光华芯光电技术股份有限公司 Air tightness leakage detection device and method
CN110836751A (en) * 2019-11-29 2020-02-25 陈美香 Lower switch valve device for detecting air tightness of precise three-way valve
CN114323629A (en) * 2020-09-29 2022-04-12 上海廷本流体控制有限公司 Stop valve pressure test frock
CN112504596A (en) * 2020-11-06 2021-03-16 北京宇航系统工程研究所 Triaxial vibration test device for valve
CN112557023A (en) * 2020-11-27 2021-03-26 中船动力研究院有限公司 GAV test fixture and GAV test bench
CN112557023B (en) * 2020-11-27 2024-01-23 中船动力研究院有限公司 GAV test fixture and GAV test bench
CN114252214A (en) * 2021-12-23 2022-03-29 中国矿业大学 Constant pressure experiment-based pressure balance valve leakage amount detection device and method

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