CN101191754A - Checking apparatus for checking product sealing performance and checking method - Google Patents
Checking apparatus for checking product sealing performance and checking method Download PDFInfo
- Publication number
- CN101191754A CN101191754A CNA2006101498005A CN200610149800A CN101191754A CN 101191754 A CN101191754 A CN 101191754A CN A2006101498005 A CNA2006101498005 A CN A2006101498005A CN 200610149800 A CN200610149800 A CN 200610149800A CN 101191754 A CN101191754 A CN 101191754A
- Authority
- CN
- China
- Prior art keywords
- pressure
- product
- control device
- sealing
- unit
- 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
Images
Landscapes
- Measuring Fluid Pressure (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses detection equipment used for detecting product sealing performance and a detection method. The detection equipment comprises a sealing part which is provided with a channel and is used to seal the opening of the product to be detected as well as ensure that the part with the performance to be detected is communicated with the channel; an electromagnetic valve one end of which is communicated with the channel and is used to communicate or shutoff the fluid supply to the channel; a detection device connected with the channel and used to detect the fluid pressure in the channel as well as send the pressure detection result to a control device; the control device which is electrically connected with the detection device and the electromagnetic valve and is used to control the opening and closing of the electromagnetic valve, receive the pressure detection result sent from the detection device, confirm the determination result that if the pressure change in the channel within the preset time period and under sealing condition exceeds the preset threshold value, so whether the sealing performance of the product to be detected is qualified. The detection equipment for sealing performance has a simple structure as well as simple and convenient operation, can accurately detect the sealing performance of the product to be detected, has high detection efficiency, can meet the large-batch and high-efficient production requirement.
Description
Technical field
The present invention relates to a kind of product checkout equipment and detection method, more particularly, relate to and a kind ofly be used for the checkout equipment of testing product sealing and adopt described checkout equipment to come the method for testing product sealing.
Background technology
When the product that needs is guaranteed certain sealing carries out the sealing detection, adopt the mode of water inspection usually in the prior art, be about to product and put into water, observe the bubbles volume that produces.This mode not only can't be suitable for for the product that some can not contact water, and for the product that promptly allows to contact water, because also must increase corresponding apparatus after the water inspection carries out drying to product and waits other treatment process, therefore not only detect complex procedures, cost height, operation inconvenience, and can't satisfy production requirement in enormous quantities, high efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of easy and simple to handle, detection efficiency is high and accuracy is high checkout equipment that is used for the testing product sealing.Another object of the present invention provides a kind of detection method that adopts described checkout equipment to come the testing product sealing.
The checkout equipment that is used for the testing product sealing provided by the invention comprises seal, has path, and the sealing part to be measured that is used to seal the opening of product to be measured and make product to be measured is communicated with path; Solenoid valve, the one end is communicated with path, and the other end is communicated with fluid pressure source, is used to be communicated with or turn-offs fluid supply to path; Pick-up unit links to each other with path, is used for the hydrodynamic pressure of detection path, and the pressure detection result is sent to control device; Control device, be electrically connected with pick-up unit and solenoid valve, be used for the switching of control electromagnetic valve, the pressure detection result that reception is sent by pick-up unit, whether qualified whether surpass predetermined threshold, obtain sealing the result of determination of product to be measured thus if determining in the predetermined amount of time inner gateway that the pressure under the sealing state changes.
The described checkout equipment of employing provided by the invention comes the method for testing product sealing to comprise: seal is sealingly connected to the opening of product to be measured, and an end of solenoid valve is communicated with fluid pressure source; In control device, set working pressure S, described predetermined amount of time Δ t, and described predetermined threshold Th; The control device control electromagnetic valve is opened, the pressure in the real-time detection path of pick-up unit and the pressure detection result is sent to control device simultaneously, when described pressure reaches predetermined working pressure S, the control device control electromagnetic valve is closed and is picked up counting, timing finishes to through described predetermined amount of time Δ t the time, and control device is determined the maximal value of described pressure in described predetermined amount of time and the difference DELTA S between the minimum value according to the pressure detection result that pick-up unit sends; Control device is compared described difference DELTA S and described predetermined threshold Th, when Δ S＞Th, judges that the sealing of described product to be measured is defective, when Δ S≤Th, judges that the sealing of described product to be measured is qualified.
The advantage of sealing checkout equipment provided by the invention is simple in structure, easy and simple to handle, can detect the sealing of product to be measured exactly, and the detection efficiency height can satisfy production requirement in enormous quantities, high efficiency simultaneously.
Description of drawings
Fig. 1 is the structured flowchart that is used for the checkout equipment of testing product sealing provided by the invention;
Fig. 2 is the workflow diagram of the checkout equipment of expression testing product sealing provided by the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the checkout equipment that is used for the testing product sealing provided by the invention comprises seal 1, pick-up unit 3, solenoid valve 4, control device 5.
Wherein, described seal 1 is used for the opening of product to be measured is sealed, so that the sealing of product to be measured part to be measured forms airtight chamber.Therefore, the seal 1 various sealing-plugs that can adapt for the shape and size of shape and size and product opening to be measured.And the quantity of seal 1 also can be determined according to the number of openings of product to be measured, for example, when product to be measured has only an opening, only needs a seal that this opening is sealed and gets final product; And when product to be measured has two openings, then need two seals that these two openings are sealed respectively, so that the sealing of product to be measured part to be measured forms airtight chamber.Described seal 1 has path 2, is used for being communicated with the sealing of product to be measured part to be measured, thereby carries gas by path 2 in the sealing part to be measured of the product to be measured that is sealed by seal 1.
Described pick-up unit 3 links to each other with path 2, is used for detection path 2, is sent to control device 5 just by the hydrodynamic pressure in the sealing part to be measured of the product to be measured of seal 1 sealing, and with the pressure detection result.Described pick-up unit 3 can adopt various devices that can the sensing hydrodynamic pressure as required, is preferably pressure transducer, and described pressure detection result is a digital signal value.
One end of described solenoid valve 4 is communicated with path 2, and the other end is communicated with fluid pressure source 7, is used to be communicated with or turn-offs fluid supply to path 2.Under the energising situation, solenoid valve 4 is opened, and allows to path 2 accommodating fluids; Under powering-off state, solenoid valve 4 cuts out, and blocking-up is to path 2 accommodating fluids.Described fluid pressure source 7 can be various common dry sources of the gas, and pressure is greatly about about 0.65Mpa.
Described control device 5 is electrically connected with pick-up unit 3 and solenoid valve 4, be used for the switching of control electromagnetic valve 4, the pressure detection result that reception is sent by pick-up unit 3, whether qualified whether surpass predetermined threshold, obtain sealing the result of determination of product to be measured thus if determining in the predetermined amount of time inner gateway 2 that the pressure under the sealing state changes.Wherein, described predetermined amount of time can detect national standard to be determined according to the sealing of survey product, for example at automobile exhaust purifier, is generally 20-50 second, is preferably 30 seconds.Described predetermined threshold also is to determine according to the sealing detection national standard of survey product, equally at automobile exhaust purifier, being generally 7-15 kPa, being preferably 10 kPas, is that internal drop in 30 seconds is no more than 10 kPas because stipulate its impermeability examination criteria in the GB.
Under the preferable case, described control device 5 comprises: signal processing unit 51, be electrically connected with pick-up unit 3 and control module 52, be used for sending the steering order of the switching of control electromagnetic valve 4 to control module 52, the pressure detection result that receiving detection device 3 sends, determine the change value of pressure under the sealing state in the predetermined amount of time inner gateway 2, this change value of pressure and described predetermined threshold are compared, obtain described result of determination thus; And control module 52, be connected with solenoid valve 4 and signal processing unit 51, be used for received signal and receive the steering order of processing unit 51 and the switching of control electromagnetic valve 4.Wherein, pick-up unit 3 is sent to signal processing unit 51 with detected pressure detection result, when detected pressure detection result equaled predetermined work pressure, signal processing unit 51 sent steering order to control module 52, and control electromagnetic valve 4 is closed.Described predetermined work pressure can come fixed usually as required, at automobile exhaust purifier, is generally 180-250 kPa, preferably approximately is 205 kPas.
Under the preferable case, described control device 5 also comprises timing unit 53, timing unit 53 is electrically connected with described signal processing unit 51, be used for picking up counting, and when arriving described predetermined amount of time, send the signal that timing has been arrived to described signal processing unit 51 according to the instruction that picks up counting that described signal processing unit 51 sends.
Under the preferable case, described control device 5 also comprises display unit 54, is electrically connected with described signal processing unit 51, is used to show described result of determination, or also shows described pressure detection result simultaneously.Described display unit 54 can adopt various suitable equipment as required, as liquid crystal or LED digital indicator, LED lamp or audible alarm unit.
Adopt described checkout equipment provided by the invention to come the method for the sealing of testing product, this method comprises: seal 1 is sealingly connected to the opening of product to be measured, and an end of solenoid valve 4 is communicated with fluid pressure source 7; In control device 5, set working pressure S, described predetermined amount of time Δ t, and described predetermined threshold Th; Control device 5 control electromagnetic valve 4 are opened, the pressure in the pick-up unit 3 real-time the detection path 2 and pressure detection result is sent to control device 5 simultaneously, when described pressure reaches predetermined working pressure S, control device 5 control electromagnetic valve 4 are closed and are picked up counting, timing finishes to through described predetermined amount of time Δ t the time, and control device 5 is determined the maximal value of described pressure in described predetermined amount of time and the difference DELTA S between the minimum value according to the pressure detection result that pick-up unit 3 sends; Control device 5 is compared described difference DELTA S and described predetermined threshold Th, when Δ S＞Th, judges that the sealing of described product to be measured is defective, when Δ S≤Th, judges that the sealing of described product to be measured is qualified.
Wherein, described working pressure S, predetermined amount of time Δ t and predetermined threshold Th determine according to the sealing requirements of described product to be measured, perhaps determine according to country, industry or company standard.Automobile exhaust purifier is carried out the impermeability detection is example, and described predetermined working pressure S is generally 180-250 kPa, preferably approximately is 205 kPas.Described predetermined amount of time Δ t is generally 20-50 second, is preferably 30 seconds.Described predetermined threshold Th is generally 7-15 kPa, is preferably 10 kPas, because the impermeability examination criteria of regulation automobile exhaust purifier is that internal drop in 30 seconds is no more than 10 kPas in the GB.
Under the preferable case, described detection method realizes described timing by the timing unit 53 of control device 5.Under the preferable case, described detection method also comprises, by the display unit 54 demonstration sealing result of determination of control device 5, or also shows described pressure detection result simultaneously.
Below in conjunction with Fig. 1 and 2 the use of sealing checkout equipment provided by the invention is described.
At first, seal 1 is sealed on the opening of product to be measured, so that the sealing of product to be measured part to be measured forms airtight chamber.Afterwards, control device 5 control electromagnetic valve 4 are opened, so will be fed in the sealing part to be measured of the product to be measured that is sealed by seal 1 by path 2 by the gas of fluid pressure source 7 feeds.In this process, in the pick-up unit 3 real-time detection path 2, be sent to control device 5 just by the hydrodynamic pressure in the sealing part to be measured of the product to be measured of seal 1 sealing, and with the pressure detection result.When detected pressure equaled predetermined work pressure S, control device 5 control electromagnetic valve 4 were closed and are picked up counting, so stop the sealing part feed to be measured gas to the product to be measured that is sealed by seal 1.Then, still by in the pick-up unit 3 real-time detection path 2, the atmospheric pressure value in the sealing part to be measured of the product to be measured that seals by seal 1 just.After finishing to timing through predetermined amount of time Δ t, control device 5 is determined the maximal value of described pressure in described predetermined amount of time and the difference DELTA S between the minimum value according to the pressure detection result that pick-up unit 3 sends, and described difference DELTA S and described predetermined threshold Th are compared.When Δ S＞Th, control device 5 judges also and shows that the sealing of described product to be measured is defective, and when Δ S≤Th, control device 5 judgements also show that the sealing of described product to be measured is qualified.At last, the opening of seal 1 with the product of finishing detection separated, thereby the sealing of finishing a product detects.Repeat above-mentioned steps afterwards, detect with product to be detected to other.
Claims (10)
1. a checkout equipment that is used for the testing product sealing is characterized in that, this checkout equipment comprises:
Seal (1) has path (2), and the sealing part to be measured that is used to seal the opening of product to be measured and make product to be measured is communicated with path (2);
Solenoid valve (4), the one end is communicated with path (2), and the other end is communicated with fluid pressure source (7), is used for connection or the shutoff fluid supply to path (2);
Pick-up unit (3) links to each other with path (2), is used for the hydrodynamic pressure of detection path (2), and the pressure detection result is sent to control device (5);
Control device (5), be electrically connected with pick-up unit (3) and solenoid valve (4), be used for the switching of control electromagnetic valve (4), the pressure detection result that reception is sent by pick-up unit (3), determine in the predetermined amount of time inner gateway (2) that whether sealing state pressure down change above predetermined threshold, obtain the whether qualified result of determination of sealing of product to be measured thus.
2. checkout equipment according to claim 1, wherein, described pick-up unit (3) is a pressure transducer, described pressure detection result is a digital signal value.
3. checkout equipment according to claim 1, wherein, described control device (5) comprising:
Signal processing unit (51), be electrically connected with pick-up unit (3) and control module (52), be used for sending the steering order of the switching of control electromagnetic valve (4) to control module (52), the pressure detection result that receiving detection device (3) sends, determine the change value of pressure under the sealing state in the predetermined amount of time inner gateway (2), this change value of pressure and described predetermined threshold are compared, obtain described result of determination thus; And
Control module (52) is connected with solenoid valve (4) and signal processing unit (51), is used for received signal and receives the steering order of processing unit (51) and the switching of control electromagnetic valve (4).
4. checkout equipment according to claim 3, wherein, described control device (5) also comprises timing unit (53), timing unit (53) is connected with described signal processing unit (51), be used for picking up counting, and when arriving described predetermined amount of time, send the signal that timing has been arrived to described signal processing unit (51) according to the instruction that picks up counting that described signal processing unit (51) sends.
5. checkout equipment according to claim 3, wherein, described control device (5) also comprises display unit (54), is electrically connected with described signal processing unit (51), is used to show described result of determination, or also shows described pressure detection result simultaneously.
6. checkout equipment according to claim 5, wherein, described display unit (54) is liquid crystal or LED digital indicator, LED lamp or audible alarm unit.
7. method that adopts any described checkout equipment in the claim 1 to 6 to come the testing product sealing, this method comprises:
Seal (1) is sealingly connected to the opening of product to be measured, and an end of solenoid valve (4) is communicated with fluid pressure source (7);
In control device (5), set working pressure S, described predetermined amount of time Δ t, and described predetermined threshold Th;
Control device (5) control electromagnetic valve (4) is opened, pick-up unit (3) pressure in the detection path (2) and the pressure detection result is sent to control device (5) in real time simultaneously, when described pressure reaches predetermined working pressure S, control device (5) control electromagnetic valve (4) is closed and is picked up counting, timing finishes to through described predetermined amount of time Δ t the time, and control device (5) is determined the maximal value of described pressure in described predetermined amount of time and the difference DELTA S between the minimum value according to the pressure detection result that pick-up unit (3) sends;
Control device (5) is compared described difference DELTA S and described predetermined threshold Th, when Δ S＞Th, judges that the sealing of described product to be measured is defective, when Δ S≤Th, judges that the sealing of described product to be measured is qualified.
8. method according to claim 7, wherein, described working pressure S, predetermined amount of time Δ t and predetermined threshold Th determine according to the sealing requirements of described product to be measured, perhaps determine according to country, industry or company standard.
9. method according to claim 7 wherein, realizes described timing by the timing unit (53) of control device (5).
10. method according to claim 7, wherein, this method also comprises, by display unit (54) the demonstration sealing result of determination of control device (5), or also shows described pressure detection result simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101498005A CN101191754A (en) | 2006-11-27 | 2006-11-27 | Checking apparatus for checking product sealing performance and checking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101498005A CN101191754A (en) | 2006-11-27 | 2006-11-27 | Checking apparatus for checking product sealing performance and checking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101191754A true CN101191754A (en) | 2008-06-04 |
Family
ID=39486888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101498005A Pending CN101191754A (en) | 2006-11-27 | 2006-11-27 | Checking apparatus for checking product sealing performance and checking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101191754A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323015A (en) * | 2011-08-24 | 2012-01-18 | 苏州工业园区服务外包职业学院 | Gas leakage detection apparatus |
| CN102384825A (en) * | 2011-11-09 | 2012-03-21 | 福建海洋铜业有限公司 | Air tightness detection device for gate valve |
| CN102494854A (en) * | 2011-11-24 | 2012-06-13 | 温岭德光自动化设备有限公司 | Leakage and plugging detection apparatus of infusion set |
| CN102519682A (en) * | 2011-10-27 | 2012-06-27 | 天瀚科技(吴江)有限公司 | GPS (Global Position System) module watertightness testing device |
| CN102589818A (en) * | 2012-01-13 | 2012-07-18 | 上海新孚美变速箱技术服务有限公司 | Detector for sealing performance of hydraulic actuating element of automatic speed changer and detection method thereof |
| CN102661837A (en) * | 2012-05-15 | 2012-09-12 | 新疆大全新能源有限公司 | Detection method for micro-leakage of reduction furnace |
| CN103134646A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Water tightness detection system of pipeline and detection method thereof |
| CN103151081A (en) * | 2013-02-21 | 2013-06-12 | 中国核电工程有限公司 | Personnel gate sealing performance and leakage rate real-time detection system, and method thereof |
| CN103728929A (en) * | 2013-09-13 | 2014-04-16 | 长春北方化工灌装设备有限公司 | Industry internet of things for preventing leakage in filling process and leakage detecting method |
| CN103846726A (en) * | 2012-12-03 | 2014-06-11 | 株式会社森精机制作所 | Method and apparatus for detecting airtight state of machine-tool window |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
| CN105092188A (en) * | 2015-08-28 | 2015-11-25 | 高精科技(苏州)有限公司 | Cleaning nozzle sealing detection apparatus |
| CN105738047A (en) * | 2016-03-29 | 2016-07-06 | 威格气体纯化科技（苏州）股份有限公司 | Online seal detection device, multi-section type seal cavity machining equipment and method |
| CN107389279A (en) * | 2017-08-29 | 2017-11-24 | 颍上县金晨阳工贸有限公司 | A kind of basketball inflator with gas leakage detection function |
| CN108663173A (en) * | 2018-08-09 | 2018-10-16 | 安徽纽威吉新能源汽车技术有限公司 | A kind of vortex compressor of air conditioner intelligence leakage detection apparatus and detection method |
| CN109010968A (en) * | 2018-07-11 | 2018-12-18 | 北海和思科技有限公司 | A kind of detection system and its control method of air pressure cupping machine testing gas leakage |
| CN110567654A (en) * | 2019-09-12 | 2019-12-13 | 安徽养和医疗器械设备有限公司 | Expiration detection system |
| CN112856019A (en) * | 2020-12-31 | 2021-05-28 | 华南理工大学 | Testing device and method for detecting hydraulic tightness and flow characteristics of electromagnetic valve |
-
2006
- 2006-11-27 CN CNA2006101498005A patent/CN101191754A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323015A (en) * | 2011-08-24 | 2012-01-18 | 苏州工业园区服务外包职业学院 | Gas leakage detection apparatus |
| CN102519682A (en) * | 2011-10-27 | 2012-06-27 | 天瀚科技(吴江)有限公司 | GPS (Global Position System) module watertightness testing device |
| CN102384825B (en) * | 2011-11-09 | 2014-07-30 | 福建省海洋阀门科技有限公司 | Air tightness detection device for gate valve |
| CN102384825A (en) * | 2011-11-09 | 2012-03-21 | 福建海洋铜业有限公司 | Air tightness detection device for gate valve |
| CN103134646A (en) * | 2011-11-23 | 2013-06-05 | 比亚迪股份有限公司 | Water tightness detection system of pipeline and detection method thereof |
| CN102494854A (en) * | 2011-11-24 | 2012-06-13 | 温岭德光自动化设备有限公司 | Leakage and plugging detection apparatus of infusion set |
| CN102589818A (en) * | 2012-01-13 | 2012-07-18 | 上海新孚美变速箱技术服务有限公司 | Detector for sealing performance of hydraulic actuating element of automatic speed changer and detection method thereof |
| CN102661837A (en) * | 2012-05-15 | 2012-09-12 | 新疆大全新能源有限公司 | Detection method for micro-leakage of reduction furnace |
| CN102661837B (en) * | 2012-05-15 | 2014-04-02 | 新疆大全新能源有限公司 | Detection method for micro-leakage of reduction furnace |
| CN103846726A (en) * | 2012-12-03 | 2014-06-11 | 株式会社森精机制作所 | Method and apparatus for detecting airtight state of machine-tool window |
| CN103846726B (en) * | 2012-12-03 | 2017-06-23 | 株式会社森精机制作所 | The airtight conditions detection method and airtight conditions detection means of lathe window portion |
| CN103151081A (en) * | 2013-02-21 | 2013-06-12 | 中国核电工程有限公司 | Personnel gate sealing performance and leakage rate real-time detection system, and method thereof |
| CN103151081B (en) * | 2013-02-21 | 2015-11-25 | 中国核电工程有限公司 | Access lock leak check and slip real-time detecting system and method |
| CN103728929B (en) * | 2013-09-13 | 2016-05-18 | 长春北方化工灌装设备有限公司 | A kind of leakage detection method of anti-pouring process Leak Detection |
| CN103728929A (en) * | 2013-09-13 | 2014-04-16 | 长春北方化工灌装设备有限公司 | Industry internet of things for preventing leakage in filling process and leakage detecting method |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
| CN105092188A (en) * | 2015-08-28 | 2015-11-25 | 高精科技(苏州)有限公司 | Cleaning nozzle sealing detection apparatus |
| CN105738047A (en) * | 2016-03-29 | 2016-07-06 | 威格气体纯化科技（苏州）股份有限公司 | Online seal detection device, multi-section type seal cavity machining equipment and method |
| WO2017166837A1 (en) * | 2016-03-29 | 2017-10-05 | 威格气体纯化科技（苏州）股份有限公司 | Online seal inspection apparatus, multi-section sealed cavity machining device and method |
| US11231340B2 (en) | 2016-03-29 | 2022-01-25 | Vigor Gas Purification Technologies, Inc. | On-line sealing detecting device, multi-section-type seal chamber processing equipment and method |
| CN107389279A (en) * | 2017-08-29 | 2017-11-24 | 颍上县金晨阳工贸有限公司 | A kind of basketball inflator with gas leakage detection function |
| CN109010968A (en) * | 2018-07-11 | 2018-12-18 | 北海和思科技有限公司 | A kind of detection system and its control method of air pressure cupping machine testing gas leakage |
| CN108663173A (en) * | 2018-08-09 | 2018-10-16 | 安徽纽威吉新能源汽车技术有限公司 | A kind of vortex compressor of air conditioner intelligence leakage detection apparatus and detection method |
| CN110567654A (en) * | 2019-09-12 | 2019-12-13 | 安徽养和医疗器械设备有限公司 | Expiration detection system |
| CN112856019A (en) * | 2020-12-31 | 2021-05-28 | 华南理工大学 | Testing device and method for detecting hydraulic tightness and flow characteristics of electromagnetic valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101191754A (en) | Checking apparatus for checking product sealing performance and checking method | |
| CN204694421U (en) | Valve leak detection proving installation | |
| CN105334035A (en) | One-way valve performance test system and test method | |
| CN104215290B (en) | Differential pressure type volume measurement method | |
| CN105675235A (en) | Container leakage detection device and method | |
| CN203337347U (en) | Multi cavity air tightness test device | |
| CN112240819A (en) | Valve detection system | |
| CN103786932A (en) | Infusion soft bag heat seal strength online detecting device and infusion soft bag production line | |
| CN205262717U (en) | Check valve capability test system | |
| CN202710433U (en) | Gas diffusion initial velocity measuring system by isometric variable-pressure method | |
| CN204043747U (en) | Differential pressure type device for measuring volume | |
| CN108020353A (en) | A kind of detection device of the pressure sensor of wide range | |
| CN201262585Y (en) | Mechanical sealing gas-tight test detection device for pot | |
| CN111413043A (en) | Device and method for detecting sealing performance of sealing element | |
| CN208607521U (en) | A kind of PLC control system of helium leak check filling recyclable device | |
| CN216410654U (en) | Valve housing strength detection device | |
| CN212963892U (en) | Breathable film true water detection device | |
| CN203037423U (en) | Air tightness detection device for positive-pressure containers | |
| CN210005179U (en) | sealed automatic detection system | |
| CN109085793A (en) | A kind of PLC control system of helium leak check filling recyclable device | |
| CN210604898U (en) | Self-made piezodensity relay checking device | |
| CN210834055U (en) | Valve leakage water-free detection system | |
| CN112304526A (en) | Device and method for detecting leakage of valve shell | |
| CN103630302B (en) | A kind of pipe volume pressure differential method tester | |
| CN210037114U (en) | Measuring system for measuring sealing performance of sealing box by oxygen-containing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080604 |