CN101995319A - Airtightness testing machine - Google Patents

Airtightness testing machine Download PDF

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Publication number
CN101995319A
CN101995319A CN 201010529586 CN201010529586A CN101995319A CN 101995319 A CN101995319 A CN 101995319A CN 201010529586 CN201010529586 CN 201010529586 CN 201010529586 A CN201010529586 A CN 201010529586A CN 101995319 A CN101995319 A CN 101995319A
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CN
China
Prior art keywords
air
airtight
solenoid valve
electromagnetic valve
cylinder
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CN 201010529586
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Chinese (zh)
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CN101995319B (en
Inventor
粱刚
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粱刚
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Priority to CN2010105295862A priority Critical patent/CN101995319B/en
Publication of CN101995319A publication Critical patent/CN101995319A/en
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Publication of CN101995319B publication Critical patent/CN101995319B/en

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Abstract

The invention discloses an airtightness testing machine comprising an airtight box body, a water drum arranged in the airtight box body, a first branch tube, a second branch tube, a water inlet electromagnetic valve, a drain electromagnetic valve, an exhaust electromagnetic valve and a controller, wherein a testing box body is arranged on the top of the airtight box body; a testing table is arranged at the bottom of the testing box body; an air hole provided with a tube joint is arranged in the middle of the testing table; the tube joint is connected with a second pneumatic electromagnetic valve through an air duct; the testing table is provided with a hydraulic cylinder and an air cylinder, and an oil inlet tube of the hydraulic cylinder and the air inlet pipeline of the air cylinder are respectively provided with a hydraulic electromagnetic valve and a first pneumatic electromagnetic valve; the first branch tube is provided with a first pneumatic electromagnetic valve and is connected with the air cylinder; the second branch tube is provided with a third pneumatic electromagnetic valve and is communicated with the airtight box body; and the controller controls the opening and closing of the hydraulic electromagnetic valve, the first pneumatic electromagnetic valves, the second pneumatic electromagnetic valve, the third pneumatic electromagnetic valve, the exhaust electromagnetic valve, the water inlet electromagnetic valve and the drain electromagnetic valve. The invention can effectively eliminate instability and decrease false test probability.

Description

A kind of airtight test machine

Technical field

The present invention relates to proving installation, particularly relate to a kind of airtight test machine.

Background technology

Because inflammable, the explosive characteristic of gasoline, diesel oil for this type of machinery of fuel engines, for improving safety coefficient, must be carried out strict check to the sealing of total system.And engine cylinder cover is as the shell of engine, and fuel oil is with the barrier at last of air contact, and sealing is the most important thing especially.

Traditional airtight test machine is directly by pressing the fixed engine cylinder cover to be measured of clamping, stop up whole inner chambers of cylinder cap and the outside hole that is connected, cylinder cap has formed the inner chamber of a sealing like this, then cylinder cap is immersed in the water, gas after the air compressor compression enters in the cylinder cap by the built-in air hole of frock plate, realize the internal pressurization of cylinder cap, form pressure reduction by internal air pressure and external water pressure, and whether cylinder cap produces the sealing that bubble is concluded this cylinder cap in operator's observation water.

But it is more to use traditional airtight test machine uncontrollable factor, and as the pressure of input, press the dynamics of folder etc., and the operator makes like this that as the judgement side of whole detection the stability of testing is not high, and the probability of flase drop is higher.

Summary of the invention

For solving the problems of the technologies described above, the embodiment of the invention provides a kind of airtight test machine, and is not high with the stability that solves traditional airtight test machine, the probability of false detection problem of higher, and technical scheme is as follows:

Described airtight test machine comprises: airtight casing, and its top is provided with the test casing, and the bottom of this test casing is provided with test board, has the pore that pipe adapter is installed in the middle of this test board, and described pipe adapter links to each other with second air-operated solenoid valve by wireway; This test board is provided with hydraulic cylinder and cylinder, and is respectively arranged with the hydraulic buttery valve and first air-operated solenoid valve on the air supply pipe of the oil inlet pipe of this hydraulic cylinder and cylinder;

Be arranged on airtight box house, the water drum that the two ends that airtight casing is communicated with the test casing are not all sealed;

Air supply pipe comprises first arm that is provided with first air-operated solenoid valve and is connected with cylinder and second arm that is provided with the 3rd air-operated solenoid valve and is communicated with described airtight casing;

Be separately positioned on the entering water electromagnetic valve and the drain solenoid valve of described airtight bottom half water inlet and freeing port;

Be arranged on the exhaust solenoid valve of described airtight casing exhausr port;

The electronic digital display table, this electronic digital display table links to each other with gas pressure sensor, to show gas pressure value;

Controller is used to control the switch of described hydraulic buttery valve, first air-operated solenoid valve, second air-operated solenoid valve, the 3rd air-operated solenoid valve, exhaust solenoid valve, entering water electromagnetic valve and drain solenoid valve.

Wherein, described gas pressure sensor links to each other with controller by the induced electricity magnet valve.

Wherein, also comprise: be arranged at the rubber cushion that has pore on the test board, the pore that exists on the pore on this rubber cushion and the test board communicates.

Wherein, described cylinder and hydraulic cylinder quantity are at least two.

Wherein, also comprise: separator;

Described separator links to each other with the oil inlet pipe of hydraulic cylinder.

Wherein, also comprise: the air pressure regulator that links to each other with air supply pipe.

Wherein, also comprise: the emergency stop switch that links to each other with first arm.

Wherein, also comprise: the counter that links to each other with controller is used for statistical magnitude.

The technical scheme that is provided by the above embodiment of the invention as seen, airtight test machine of the present invention adopts controller to control whole test process, and under certain predetermined condition, carry out, eliminate the instability that manually-operated brings with this, reduce the probability of flase drop.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the present invention, for those of ordinary skills, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the front elevational view of embodiment of the invention airtight test machine;

Fig. 2 for embodiment of the invention airtight test machine after cut open figure;

Fig. 3 is the vertical view of embodiment of the invention airtight test machine;

Fig. 4 is the left view of embodiment of the invention airtight test machine.

Embodiment

In order to make those skilled in the art person understand technical scheme among the present invention better, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtained should belong to the scope of protection of the invention.

The purpose of this invention is to provide a kind of airtight test machine, can solve in traditional airtight test machine test because the high problem of instability height, probability of false detection that manually-operated brings.

The described airtight test machine of the embodiment of the invention comprises:

Airtight casing, its top is provided with the test casing, and the bottom of this test casing is provided with test board, has the pore that pipe adapter is installed in the middle of this test board, and described pipe adapter links to each other with second air-operated solenoid valve by wireway; This test board is provided with hydraulic cylinder and cylinder, and is respectively arranged with the hydraulic buttery valve and first air-operated solenoid valve on the air supply pipe of the oil inlet pipe of this hydraulic cylinder and cylinder; Be arranged on airtight box house, the water drum that the two ends that airtight casing is communicated with the test casing are not all sealed;

Air supply pipe comprises first arm that is provided with first air-operated solenoid valve and is connected with cylinder and second arm that is provided with the 3rd air-operated solenoid valve and is communicated with described airtight casing;

Be separately positioned on the entering water electromagnetic valve and the drain solenoid valve of described airtight bottom half water inlet and freeing port;

Be arranged on the exhaust solenoid valve of described airtight casing exhausr port;

The electronic digital display table, this electronic digital display table links to each other with gas pressure sensor, to show gas pressure value;

Controller is used to control the switch of described hydraulic buttery valve, first air-operated solenoid valve, second air-operated solenoid valve, the 3rd air-operated solenoid valve, exhaust solenoid valve, entering water electromagnetic valve and drain solenoid valve.

The course of work of described airtight test machine is:

(1) location workpiece

Workpiece is placed on predeterminated position on the test board, makes workpiece be positioned on the test board.

(2) hydraulic cylinder compresses action to workpiece

Controller sends signal to hydraulic buttery valve, and hydraulic buttery valve receives that producing electromagnetic force behind the signal opens oil inlet passage, and fluid enters hydraulic cylinder, hydraulic cylinder Work-sheet pressing on test board.

(3) cylinder plug-hole

Controller sends signal to first air-operated solenoid valve that is connected in first arm, and the generation electromagnetic force was opened first tube passage after first air-operated solenoid valve was received signal, and gas enters cylinder, and cylinder carries out plug-hole to workpiece.

(4) to workpiece lumen inflation body

Controller second air-operated solenoid valve sends signal, and the generation electromagnetic force was opened gas circuit after second air-operated solenoid valve was received signal, and gas enters the measured workpiece inner chamber by the wireway that is connected in second air-operated solenoid valve.Described wireway one end connects second air-operated solenoid valve, other end connecting pipe joint.

(5) whether test leaks gas

After inflation finishes, behind the voltage stabilizing certain hour, controller transmits signal to gas pressure sensor, the variation of gas pressure sensor perception workpiece lumen air pressure, and atmospheric pressure value is presented on the electronic digital display table, as if the atmospheric pressure value maintenance or greater than the atmospheric pressure value requirement, then workpiece is qualified, does examination and finishes exhaust solenoid valve work, get rid of workpiece lumen gas, take out workpiece; If be lower than the air pressure required value, then carry out the water examination, water examination process: entering water electromagnetic valve receives that the signal of controller starts working, the water level of airtight casing begins to rise, after rising to certain position, controller sends signal to the 3rd air-operated solenoid valve, the generation electromagnetic force was opened second tube passage after the 3rd air-operated solenoid valve received signal, feed gas to airtight casing, described gas will be tested water and be pressed in the water drum, water level in the water drum rises to and floods till the workpiece, and entering water electromagnetic valve is closed intake tunnel automatically, and the 3rd air-operated solenoid valve quits work; Second air-operated solenoid valve is received signal then, and gas circuit is opened, continue to carry out the inflation of a period of time to workpiece lumen, and which the position gas leakage of artificial observation workpiece, after observation finishes, discharge water solenoid valve and exhaust solenoid valve work, workpiece is taken out in the sluicing exhaust.

By above technical scheme of the present invention as can be known, described airtight test machine adopts controller to control whole test process, and carries out under certain predetermined condition, eliminates the instability that manually-operated brings with this, reduces the probability of flase drop.

Wherein, gas pressure sensor links to each other with controller; Controller transmits signal and gives the induced electricity magnet valve, and the induced electricity magnet valve sends signal to gas pressure sensor, and gas pressure sensor is presented at the value of air pressure on the electronic digital display table.

Obviously, workpiece directly is pressed on the test board probably bottom abrasion to workpiece, so a rubber cushion that has pore is set on test board.The pore of rubber cushion communicates with the pore of test board, makes gas to enter workpiece lumen by test board and rubber cushion smoothly.

In order to realize better pressuring action, make workpiece stressed evenly, can on test board, settle a plurality of hydraulic cylinders uniformly; At this moment, need separator that oil circuit is divided into many, make fluid enter a plurality of hydraulic cylinders, to realize to Work-sheet pressing.Obviously, the quantity of cylinder also can be for a plurality of, and a plurality of pores of workpiece are stopped up.

For the embodiment of the invention is optimized more, the described airtight test machine of the embodiment of the invention also comprises: the air pressure regulator that links to each other with air supply pipe, this air pressure regulator are used for regulating the input gaseous tension; With the emergency stop switch that first arm links to each other, this emergency stop switch can run into the workpiece putting position incorrect, promptly stop when causing some emergency case such as human accident, increase the security of workpiece test; Counter, this counter replaces artificial counting adding up or the person that needs the statistical operation when detecting the quantity of workpiece every day the finished product workpiece, writes down workpiece quantity in real time accurately.

In order to make those skilled in the art person understand the present invention program better, below with the controller for the PLC controller be example the present invention is described in further detail with embodiment in conjunction with the accompanying drawings, certain controller of the present invention is not limited to the PLC controller.

In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, airtight test machine of the present invention comprises: test casing 1, airtight casing 2, air supply pipe 6 (air supply pipe 6 comprises first arm 61 and second arm 62), cylinder 7, the 3rd air-operated solenoid valve 8, emergency stop switch 9, air pressure regulator 10, rubber cushion 11, test board 12, pipe adapter 13, hydraulic cylinder 14, depression bar 15, briquetting 16, separator 17, register pin 18, water drum 19, rain glass 20, electronic digital display table 21, counter 22, workpiece 23, PLC controller 24, gas pressure sensor 25, intake tunnel 26, the first air-operated solenoid valve (not shown), the second air-operated solenoid valve (not shown), induced electricity magnet valve (not shown), the wireway (not shown).

The annexation of each parts is described in the above-described embodiments, is not giving unnecessary details at this, the course of work of introducing airtight test machine of the present invention below in conjunction with accompanying drawing in detail is as follows:

(1) location workpiece

Operating personnel aim at pre-packed register pin 18 on the test platform with the pilot hole of workpiece 23, and described register pin 18 can better be positioned at workpiece 23 on the test board 12, realize the location to workpiece 23.

(2) 14 pairs of workpiece 23 of hydraulic cylinder compress action

PLC controller 24 provides signal for the hydraulic buttery valve (not shown), and the generation electromagnetic force was opened oil inlet passage after hydraulic buttery valve obtained signal; Open Hydraulic Station 5, fluid enters oil inlet passage, separator 17 is divided into many to oil circuit, be sent to a plurality of hydraulic cylinders 14, under the cooperation of briquetting 15, depression bar 16, hydraulic cylinder 14 is pressed on workpiece 23 on the rubber cushion 11 on the test board 12, makes workpiece 23 base plane and rubber cushion 11 fit, workpiece 23 all sealing forms internal cavities, realizes the pressuring action of 14 pairs of workpiece 23 of hydraulic cylinder.Described briquetting 15, depression bar 16 are parts of hydraulic cylinder, are responsible for measured workpiece is compressed.

(3) cylinder compound rubber plug (not marking among the figure) is realized the plug-hole effect

Open air compressor 3, gases at high pressure enter air supply pipe 6 after by air pressure energy storage canister 4, cooperate rain glasss 20 to regulate the pressure of the gases at high pressure of input at air pressure regulator 10, make the force value of gases at high pressure of input reach the value that sets in advance.PLC controller 24 provides signal for the first air-operated solenoid valve (not shown), and the generation electromagnetic force was opened gas circuit after first air-operated solenoid valve obtained signal; Under the effect of first air-operated solenoid valve, gas enters first arm 61, inflates in cylinder 7, under the cooperation of rubber plug (not marking among the figure), stops up the hole on the workpiece 23, realizes the plug-hole action of 7 pairs of workpiece 23 of cylinder.

(4) gas enters the internal cavities of workpiece 23

PLC controller 24 provides signal for the second air-operated solenoid valve (not shown), the generation electromagnetic force was opened gas circuit after second air-operated solenoid valve obtained signal, gases at high pressure enter the wireway (not shown) that links to each other with second air-operated solenoid valve with pipe adapter 13, enter the inner chamber of workpiece 23 then via pipe adapter 13; Because it is the inflation of carrying out for 4 seconds that the PLC controller is given the signal of second air-operated solenoid valve, can guarantee the minimum 0.2Mpa of atmospheric pressure value of inner chamber requirement later in 4 seconds, the described atmospheric pressure value that requires is made as 0.2Mpa, the automatic dead electricity of coil in second air-operated solenoid valve, inflation finishes.

(5) whether the voltage stabilizing test leaks gas

PLC controller 24 transmits signal to air pressure probe 25 according to the variation of workpiece 23 internal cavities pressure.Air pressure probe 25 is presented at the sensed pressure variation on the electronic digital display table 21.Inflation is observed electronic digital display table 21 after finishing for 10 seconds, because the otherness of workpiece 23 qualities has two kinds of situations:

1) if electronic digital display table 21 shows that inner chamber air pressure keeps or greater than the atmospheric pressure value 0.2Mpa that requires, then workpiece 23 is qualified, dried examination is finished; PLC controller 24 sends exhaust signal supply and exhaust solenoid valve (not shown), and exhaust solenoid valve is received signal, and the exhaust passage (not shown) is opened, discharge gas, take out workpiece 23, test finishes, the numerical value of counter 22 increases, the real-time statistics detection limit.

2) after 10 seconds, if electronic digital display table 21 shows inner chamber air pressure and is lower than the atmospheric pressure value of requirement, then workpiece 23 is carried out the water examination, water examination process: the entering water electromagnetic valve (not shown) receives that the signal of PLC controller 24 starts working, make water enter airtight casing from intake tunnel 26, when airtight casing 2 middle water levels rise to a certain degree (can flood workpiece 23 after water enters water drum 19 as long as can guarantee), PLC controller 24 sends signal to the 3rd air-operated solenoid valve 8, the generation electromagnetic force was opened gas circuit after the 3rd air-operated solenoid valve 8 was received signal, gas enters airtight casing 2 from second arm 62, described gas is gone into the hydraulic pressure in the airtight casing 2 in the water drum 19, till water enters test casing 1 floods workpiece 23, entering water electromagnetic valve stops automatically, and the 3rd air-operated solenoid valve quits work; Then PLC controller 24 sends signal to second air-operated solenoid valve, workpiece 23 inner chambers were inflated for 4 seconds, stop inflation after 4 seconds automatically, carrying out manual observation workpiece 23 which position then has gas leakage, observe after 10 seconds, the energising of the solenoid valve (not shown) that discharges water picked up signal, draining is carried out in the solenoid valve work that discharges water, decline of water table, exhaust solenoid valve is started working, and gets rid of inner chamber gas, takes out workpiece 23.

Test process finishes, and the numerical value of counter 22 increases, the real-time statistics detection limit.

By above technical scheme of the present invention as can be known, described airtight test machine adopts the PLC controller to control whole test process, and carries out under certain predetermined condition, eliminates the instability that manually-operated brings with this, reduces the probability of flase drop; In addition owing to direct water examination causes damage to workpiece easily, cause unnecessary worker useless, and waste water resource, adopt airtight test machine of the present invention at first to do examination, carry out the water examination under the underproof situation of examination doing, effectively reduced like this because the direct problem that causes of water examination.

The above only is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (8)

1. an airtight test machine is characterized in that, comprising:
Airtight casing, its top is provided with the test casing, and the bottom of this test casing is provided with test board, has the pore that pipe adapter is installed in the middle of this test board, and described pipe adapter links to each other with second air-operated solenoid valve by wireway; This test board is provided with hydraulic cylinder and cylinder, and is respectively arranged with the hydraulic buttery valve and first air-operated solenoid valve on the air supply pipe of the oil inlet pipe of this hydraulic cylinder and cylinder;
Be arranged on airtight box house, the water drum that the two ends that airtight casing is communicated with the test casing are not all sealed;
Air supply pipe comprises first arm that is provided with first air-operated solenoid valve and is connected with cylinder and second arm that is provided with the 3rd air-operated solenoid valve and is communicated with described airtight casing;
Be separately positioned on the entering water electromagnetic valve and the drain solenoid valve of described airtight bottom half water inlet and freeing port;
Be arranged on the exhaust solenoid valve of described airtight casing exhausr port;
The electronic digital display table, this electronic digital display table links to each other with gas pressure sensor, to show gas pressure value;
Controller is used to control the switch of described hydraulic buttery valve, first air-operated solenoid valve, second air-operated solenoid valve, the 3rd air-operated solenoid valve, exhaust solenoid valve, entering water electromagnetic valve and drain solenoid valve.
2. airtight test machine according to claim 1 is characterized in that, described gas pressure sensor links to each other with controller by the induced electricity magnet valve.
3. airtight test machine according to claim 1 is characterized in that, also comprises: be arranged at the rubber cushion that has pore on the test board, the pore that exists on the pore on this rubber cushion and the test board communicates.
4. airtight test machine according to claim 1 is characterized in that, at least two of described cylinder and hydraulic cylinder quantity.
5. airtight test machine according to claim 4 is characterized in that, also comprises: separator;
Described separator links to each other with the oil inlet pipe of hydraulic cylinder.
6. airtight test machine according to claim 1 is characterized in that, also comprises: the air pressure regulator that links to each other with air supply pipe.
7. airtight test machine according to claim 1 is characterized in that, also comprises: the emergency stop switch that links to each other with first arm.
8. airtight test machine according to claim 1 is characterized in that, also comprises: the counter that links to each other with controller is used for statistical magnitude.
CN2010105295862A 2010-10-22 2010-10-22 Airtightness testing machine CN101995319B (en)

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Application Number Priority Date Filing Date Title
CN2010105295862A CN101995319B (en) 2010-10-22 2010-10-22 Airtightness testing machine

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Application Number Priority Date Filing Date Title
CN2010105295862A CN101995319B (en) 2010-10-22 2010-10-22 Airtightness testing machine

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CN101995319A true CN101995319A (en) 2011-03-30
CN101995319B CN101995319B (en) 2012-05-30

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998065A (en) * 2012-12-18 2013-03-27 重庆百吉四兴压铸有限公司 General air tightness detection device
CN103084340A (en) * 2013-01-14 2013-05-08 湖州剑力金属制品有限公司 Automatic air-tightness testing and sorting device
CN103196639A (en) * 2013-04-26 2013-07-10 南通市华冠电器有限公司 Membrane leak detector
CN104655369A (en) * 2013-08-12 2015-05-27 芜湖永裕汽车工业有限公司 Air tightness detection method of engine cylinder head air passage
CN105258867A (en) * 2015-09-22 2016-01-20 航天科工防御技术研究试验中心 Gas tightness detection system
CN105424369A (en) * 2015-12-15 2016-03-23 中国燃气涡轮研究院 Pneumatic model tester for aircraft engine
CN106482915A (en) * 2016-12-15 2017-03-08 四川红光汽车机电有限公司 A kind of air inlet relief valve adnexa assembly leakage flow automatic checkout equipment
CN107238469A (en) * 2017-06-15 2017-10-10 亚杰科技(江苏)有限公司 A kind of engine cylinder-body infiltrates experiment device
CN108956048A (en) * 2018-08-01 2018-12-07 杜宗英 Arch-Breaking Device case weld leakproofness automatic detection system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2101865U (en) * 1991-08-15 1992-04-15 黄永强 Display for air leakage
CN1241717A (en) * 1999-05-10 2000-01-19 唐山爱信齿轮有限责任公司 Dry hermetization testing method and device
KR20050026247A (en) * 2003-09-09 2005-03-15 김양구 Method and device for the water-proofing test
CN1598517A (en) * 2004-08-18 2005-03-23 重庆力帆实业(集团)有限公司 Engine cylinder end airtight, precision detector
CN1746647A (en) * 2004-09-09 2006-03-15 扬动股份有限公司 Inspection of cylinder cap leakage of diesel engine
CN201397220Y (en) * 2009-05-06 2010-02-03 浙江华尔达汽车空调有限公司 Water tank dry type leak detection device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2101865U (en) * 1991-08-15 1992-04-15 黄永强 Display for air leakage
CN1241717A (en) * 1999-05-10 2000-01-19 唐山爱信齿轮有限责任公司 Dry hermetization testing method and device
KR20050026247A (en) * 2003-09-09 2005-03-15 김양구 Method and device for the water-proofing test
CN1598517A (en) * 2004-08-18 2005-03-23 重庆力帆实业(集团)有限公司 Engine cylinder end airtight, precision detector
CN1746647A (en) * 2004-09-09 2006-03-15 扬动股份有限公司 Inspection of cylinder cap leakage of diesel engine
CN201397220Y (en) * 2009-05-06 2010-02-03 浙江华尔达汽车空调有限公司 Water tank dry type leak detection device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998065A (en) * 2012-12-18 2013-03-27 重庆百吉四兴压铸有限公司 General air tightness detection device
CN103084340B (en) * 2013-01-14 2015-11-18 湖州剑力金属制品有限公司 A kind of air tightness test sorting plant automatically
CN103084340A (en) * 2013-01-14 2013-05-08 湖州剑力金属制品有限公司 Automatic air-tightness testing and sorting device
CN103196639A (en) * 2013-04-26 2013-07-10 南通市华冠电器有限公司 Membrane leak detector
CN103196639B (en) * 2013-04-26 2015-11-25 南通市华冠电器有限公司 Membrane leak detector
CN104655369A (en) * 2013-08-12 2015-05-27 芜湖永裕汽车工业有限公司 Air tightness detection method of engine cylinder head air passage
CN105258867A (en) * 2015-09-22 2016-01-20 航天科工防御技术研究试验中心 Gas tightness detection system
CN105424369B (en) * 2015-12-15 2019-01-25 中国燃气涡轮研究院 A kind of aero-engine aerodynamic model exerciser
CN105424369A (en) * 2015-12-15 2016-03-23 中国燃气涡轮研究院 Pneumatic model tester for aircraft engine
CN106482915A (en) * 2016-12-15 2017-03-08 四川红光汽车机电有限公司 A kind of air inlet relief valve adnexa assembly leakage flow automatic checkout equipment
CN106482915B (en) * 2016-12-15 2019-02-26 四川红光汽车机电有限公司 A kind of air inlet relief valve attachment assembly leakage flow automatic checkout equipment
CN107238469A (en) * 2017-06-15 2017-10-10 亚杰科技(江苏)有限公司 A kind of engine cylinder-body infiltrates experiment device
CN107238469B (en) * 2017-06-15 2019-04-12 亚杰科技(江苏)有限公司 A kind of engine cylinder body infiltration experiment device
CN108956048A (en) * 2018-08-01 2018-12-07 杜宗英 Arch-Breaking Device case weld leakproofness automatic detection system

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