CN101995319A - Airtightness testing machine - Google Patents
Airtightness testing machine Download PDFInfo
- 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
- Authority
- CN
- China
- Prior art keywords
- air
- airtight
- solenoid valve
- electromagnetic valve
- cylinder
- Prior art date
Links
- 239000011901 water Substances 0.000 claims abstract description 45
- 239000003570 air Substances 0.000 claims abstract description 37
- 239000003921 oils Substances 0.000 claims abstract description 11
- 239000007789 gases Substances 0.000 claims description 40
- 239000011148 porous materials Substances 0.000 claims description 13
- 238000000034 methods Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reactions Methods 0.000 description 2
- 230000000087 stabilizing Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002283 diesel fuels Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 230000003203 everyday Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000295 fuel oils Substances 0.000 description 1
- 239000000446 fuels Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000011521 glasses Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000011257 shell materials Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
Description
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105295862A CN101995319B (en) | 2010-10-22 | 2010-10-22 | Airtightness testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105295862A CN101995319B (en) | 2010-10-22 | 2010-10-22 | Airtightness testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101995319A true CN101995319A (en) | 2011-03-30 |
| CN101995319B CN101995319B (en) | 2012-05-30 |
Family
ID=43785778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105295862A CN101995319B (en) | 2010-10-22 | 2010-10-22 | Airtightness testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101995319B (en) |
Cited By (9)
| 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)
| 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 |
-
2010
- 2010-10-22 CN CN2010105295862A patent/CN101995319B/en not_active IP Right Cessation
Patent Citations (6)
| 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)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101995319B (en) | 2012-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103743633B (en) | Fluid structure interaction coal rock shear-seepage test device | |
| CN104266803B (en) | Air tightness detecting system and airtight detection method | |
| CN102023654B (en) | Large environment simulation laboratory pressure control system and control method thereof | |
| CN201331418Y (en) | Air-tightness detection device of shell body | |
| CN203132804U (en) | Exhaust-manifold intelligent leakage-detection marking machine | |
| CN204255581U (en) | A kind of enmgine exhaust air-tightness detection device | |
| CN203745156U (en) | Workpiece leak detecting device | |
| CN202720101U (en) | Pipeline gas tightness detection apparatus | |
| CN204783953U (en) | Energy -conserving test device of synthesis of solenoid valve and pneumatic cylinder reliability | |
| CN103680829B (en) | Transformer vacuum oil, detection system | |
| CN103743634B (en) | Fluid structure interaction coal rock shear-seepage test fluid pressure-loaded shear box | |
| CN201688948U (en) | Engine cylinder air-tightness detection platform | |
| CN104697861B (en) | A kind of low energy consumption it is multistage from supercharging high-pressure tank atmosphere cyclic test system | |
| CN103760040B (en) | Fluid structure interaction coal rock shear-seepage test shearing slip combined shear box | |
| CN104215513B (en) | High pressure hydrogen embrittlement structural testing setup and test method | |
| CN202614481U (en) | Positive voltage leakage detection apparatus of lithium ion battery | |
| CN101696899B (en) | Maintenance-free detection device and method thereof of air tightness of small cell cover | |
| CN202033160U (en) | Air-tightness tester | |
| CN101598623B (en) | Leak detection tool applied to high pressure gas leak detection method | |
| CN202033253U (en) | Valve pressure testing medium system | |
| CN201417206Y (en) | Engine cylinder cover valve leakage testing device | |
| CN100585357C (en) | Voltage-regulating transformer valve body detection device | |
| CN203534772U (en) | Automatic leakage testing device | |
| CN102012302B (en) | Comprehensive air pressure test bed for vehicle-mounted steel tank | |
| CN202149850U (en) | Test cabin for simulation of high altitude performance of internal combustion power device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C06 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400035 SHAPINGBA, CHONGQING TO: 638500 GUANG'AN, SICHUAN PROVINCE Free format text: CORRECT: ADDRESS; FROM: 400035 SHAPINGBA, CHONGQING TO: 638500 GUANG AN, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140702 Address after: The two South Industrial Park Economic Development Zone 638500 Guang'an city of Sichuan province Linshui County Patentee after: Sichuan Yonggang Machinery Co., Ltd. Address before: 400035 No. 237 cave Road, Geleshan Town, Shapingba District, Chongqing Patentee before: Liang Gang Effective date of registration: 20140702 Address after: The two South Industrial Park Economic Development Zone 638500 Guang'an city of Sichuan province Linshui County Patentee after: Sichuan Yonggang Machinery Co., Ltd. Address before: 400035 No. 237 cave Road, Geleshan Town, Shapingba District, Chongqing Patentee before: Liang Gang |
|
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN YONGGANG MACHINERY CO., LTD. Free format text: FORMER OWNER: LIANG GANG Effective date: 20140702 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20191022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |