CN109506854A - A kind of detection method of automobile pipeline sealing performance - Google Patents

A kind of detection method of automobile pipeline sealing performance Download PDF

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Publication number
CN109506854A
CN109506854A CN201811262450.2A CN201811262450A CN109506854A CN 109506854 A CN109506854 A CN 109506854A CN 201811262450 A CN201811262450 A CN 201811262450A CN 109506854 A CN109506854 A CN 109506854A
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CN
China
Prior art keywords
connector
pipeline
gas source
terminal
sealing performance
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Granted
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CN201811262450.2A
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Chinese (zh)
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CN109506854B (en
Inventor
沈皓
赵永忠
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Jiangyin Automotive Components Ltd By Share Ltd
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Jiangyin Automotive Components Ltd By Share Ltd
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Priority to CN201811262450.2A priority Critical patent/CN109506854B/en
Publication of CN109506854A publication Critical patent/CN109506854A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention relates to a kind of detection methods of automobile pipeline sealing performance, including pipeline to be tested to be fixedly mounted in test equipment;Leak detector is connect on A connector, and is passed through the positive pressure gas source of 600hPa, and B connector and C connector are opened, solenoid valve no power;A connector is opened wide, leak detector is connect on B connector, and is passed through the negative pressure gas source of -400hPa, C connector blocks, solenoid valve no power;A connector is opened wide, B connector opens wide, and leak detector is connect on C connector and is passed through the negative pressure gas source of -400hPa, solenoid valve no power;A connector is opened wide, B connector opens wide, and outside -50hPa negative pressure gas source is connect on C connector, and negative pressure gas source is equipped with flowmeter, and solenoid valve leads to 13.5V direct current, completes entire testing procedure.Test method provided by the invention can be with the sealing performance and smoothness of test product entirety;The leakproofness under electromagnetism valve closing state in test product;Test the forward conduction performance of tee one-way valve and the sealing performance in reversed cut-off direction.

Description

A kind of detection method of automobile pipeline sealing performance
Technical field
The present invention relates to a kind of detection method of automobile connecting line more particularly to a kind of inspections of automobile pipeline sealing performance Survey method.Belong to automobile pipeline Components field.
Background technique
Whether the leakproofness of automobile pipeline system is good, is directly related to the normal performance of vehicle related system function, very To the safety for influencing driver and passenger.Therefore, being sealed property of vehicle pipeline is detected most important.It is more in vehicle high-volume Under the conditions of kind mixed production, due to being limited by productive temp, the time for pipeline sealing propertytest is extremely limited how The accuracy for guaranteeing detection is our emphasis in need of consideration.
Routine test is tested only for the sealing performance of pipeline entirety, unidirectional to the solenoid valve in pipeline, threeway The smoothness of correlated performance and the pipeline entirety of the important components such as valve lacks the function of verifying.So in actual application In often there is sealing problem on the important component in pipeline, cause whole pipe-line system to be scrapped, on the one hand improve On the other hand the risk of actual use also increases the cost of production firm.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of automobile pipeline sealing performance for the above-mentioned prior art Detection method, the sealing performance and smoothness of test product entirety, to improve the qualification rate and service life of product.
The present invention solves the above problems used technical solution are as follows: a kind of detection method of automobile pipeline sealing performance, The automobile pipeline includes solenoid valve, tee one-way valve and three supervisors and a branch pipe, is distinguished on two supervisors wherein It is provided with A connector and C connector, the branch pipe is connected on tee one-way valve, and the branch tube end is provided with B connector, the inspection Survey method the following steps are included:
Step 1: pipeline to be tested is fixedly mounted in test equipment, enter after the installation is completed in next step;
Step 2: connecing leak detector on A connector, and it is passed through the positive pressure gas source of 600hPa, B connector and C connector are opened, electricity Magnet valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage rate ≤ 10ml/min enters in next step if meeting the requirements;
Step 3: A connector is opened wide, leak detector is connect on B connector, and is passed through the negative pressure gas source of -400hPa, C connector blocks, Solenoid valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage Amount≤5ml/min enters in next step if meeting the requirements;
Step 4: A connector is opened wide, B connector is opened wide, and leak detector is connect on C connector and is passed through the negative pressure gas of -400hPa
The source -1-, solenoid valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, Test request: leakage rate≤5ml/min enters in next step if meeting the requirements;
Step 5: A connector is opened wide, B connector is opened wide, and outside -50hPa negative pressure gas source is connect on C connector, is set on negative pressure gas source There is a flowmeter, solenoid valve leads to 13.5V direct current, inflationtime 2-3s, test request: traffic requirement 40L/min-50L/min, If met the requirements, entire testing procedure is completed, is put in storage after pipeline is removed from test equipment.
Preferably, the test equipment in step 1 includes rack, is set respectively in the rack according to the trend of pipeline Be equipped with the end A detecting tool, the end B detecting tool and C-terminal detecting tool, the C-terminal detecting tool side of the rack from top to bottom It is disposed with the first guide-localization seat, the second guide-localization seat, locking device and third guide-localization seat, is led in the third It is provided with the steering support base being vertically arranged below to positioning seat, pipeline is guided to the detecting tool of the end B, at the end B Horizontally-supported seat is provided in detecting tool, so that pipeline is horizontally directed to Motionless electromagnetic valve at solenoid valve fixing seat, pipe Cloth postpones A connector and is fixed in the end A detecting tool 12 in road direction, completes the installation of entire pipeline.
Preferably, the C-terminal detecting tool includes the mounting plate being fixed on the rack, and is provided with C on the mounting plate Fixing seat is held, the C-terminal fixing seat is provided with C-terminal support base, C-terminal activity push-pull rod, institute are provided on the C-terminal support base The one end for stating C-terminal activity push-pull rod is provided with C-terminal flexible handle, and the other end is equipped with C-terminal connector plug, while in the C-terminal Connector plug position is equipped with C-terminal gas source connector, after connecting by C-terminal gas source connector with leak detector, is passed through gas in C connector Source.
Preferably, the locking device is used to pipeline positioning on the rack, pipeline be facilitated to move towards, including locking installation Seat, is provided with set lever in the locking mounting base, is hinged with locking pressure arm in one end of the set lever, by turning Dynamic set lever is realized the pushing of locking pressure arm and is lifted, and the end of the locking pressure arm is provided with soft compact heap, Pipeline is pressed in locking mounting base by the groove that matching pipeline is offered on the compact heap by the groove on compact heap.
Preferably, the end B detecting tool includes the end the B support base being fixed on the rack, and is pacified on the support base of the end B Equipped with the end B flexible handle, at the end B, the lower end of flexible handle is hinged with the end B cursor, is arranged on the cursor of the end B There is down-pressed pole, the end of the down-pressed pole is provided with the locating piece of taper, sets on the end the B support base immediately below the locating piece It is equipped with joint sleeve, B connector is pressed into the joint sleeve under the action of locating piece, is set in the opposite face of the joint sleeve It is equipped with the end B gas source connector, is connect with leak detector.
Preferably, the end A detecting tool includes the end the A support base being fixed on the rack, and is pacified on the support base of the end A Equipped with the end A flexible handle, at the end A, the lower end of flexible handle is hinged with the end A activity push-pull rod, pushes and pulls in the end A activity The end of bar is provided with A connector plug, while being equipped with the end A gas source connector in the A end connector plug position, passes through the end A gas After source connector is connect with leak detector, gas source is passed through in A connector.
Compared with the prior art, the advantages of the present invention are as follows:
Test method provided by the invention can be with the sealing performance and smoothness of test product entirety;Electricity in test product Leakproofness under magnet valve closed state;Test the forward conduction performance of tee one-way valve and the sealing performance in reversed cut-off direction; The smoothness of pipeline entirety can be detected adequately before coming into operation, improve the service life of pipeline, simultaneously Save the production cost of enterprise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that pipeline is tested in the embodiment of the present invention.
Fig. 2 is that test pipeline is mounted on the schematic diagram in test equipment in the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the C-terminal detecting tool in the embodiment of the present invention in test equipment.
Fig. 4 is the structural schematic diagram of the locking device in the embodiment of the present invention in test equipment.
Fig. 5 is the structural schematic diagram of the end the B detecting tool in the embodiment of the present invention in test equipment.
Fig. 6 is the structural schematic diagram of the end the A detecting tool in the embodiment of the present invention in test equipment.
Wherein:
Solenoid valve 1,3, second supervisor 4 of the supervisor of tee one-way valve 2, first, third are responsible for 5, A connector 6, C connector 7, branch pipe 8, B connector 9, rack 11, the end A detecting tool 12, the end A support base 12.1, the end A flexible handle 12.2, the end A activity push-pull rod 12.3, A connector plug 12.4, the end A gas source connector 12.5, the end B detecting tool 13, the end B support base 13.1, the end B flexible handle 13.2, the end B cursor 13.3, joint sleeve 13.4, the end B gas source connector 13.5, down-pressed pole 13.6, locating piece 13.7, C-terminal detection Tooling 14, mounting plate 14.1, C-terminal fixing seat 14.2, C-terminal support base 14.3, C-terminal activity push-pull rod 14.4, C-terminal flexible handle 14.5, C-terminal connector plug 14.6, C-terminal gas source connector 14.7, the first guide-localization seat 15, the second guide-localization seat 16, locking dress It sets 17, locking mounting base 17.1, set lever 17.2, locking pressure arm 17.3, compact heap 17.4, third guide-localization seat 18, turn To support base 19, horizontally-supported seat 20, solenoid valve fixing seat 21.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, the detection method of one of the present embodiment automobile pipeline sealing performance, described in the present embodiment Automobile pipeline includes solenoid valve 1, tee one-way valve 2 and three supervisors: first the 3, second supervisor 4 of supervisor and third supervisor 5, institute It states and electricity is connected to by 3 connection of the first supervisor, the second supervisor 4 and third supervisor 5 between solenoid valve 1 and tee one-way valve 2 The other side of magnet valve 1 and tee one-way valve 2, and the other end of the second supervisor 4 and third supervisor 5 are provided with A connector 6 and C Connector 7, the third connector of the tee one-way valve 2 are connected with a branch pipe 8, and the end of the branch pipe 8 is provided with B connector 9.
It is as follows for the test method of above-mentioned automobile pipeline:
Step 1: pipeline to be tested is fixedly mounted in test equipment, enter after the installation is completed in next step;
Step 2: connecing leak detector on A connector, and it is passed through the positive pressure gas source of 600hPa, B connector and C connector are opened, electricity Magnet valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage rate ≤ 10ml/min, the pipeline leakproofness and solenoid valve that this step is used to test A connector to solenoid valve end are in cold situation Under leakproofness;Enter in next step if meeting the requirements;
Step 3: A connector is opened wide, leak detector is connect on B connector, and is passed through the negative pressure gas source of -400hPa, C connector blocks, Solenoid valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage Amount≤5ml/min, leakproofness of this step for pipeline between test b connector, C connector, tee one-way valve and solenoid valve;Such as It meets the requirements and then enters in next step;
Step 4: A connector is opened wide, B connector is opened wide, and leak detector is connect on C connector and is passed through the negative pressure gas source of -400hPa, Solenoid valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage Amount≤5ml/min, this step are used for the pipeline leakproofness tested between C connector, tee one-way valve, solenoid valve;Tee one-way valve The leakproofness in reversed cut-off direction;Enter in next step if meeting the requirements;
Step 5: A connector is opened wide, B connector is opened wide, and outside -50hPa negative pressure gas source is connect on C connector, is set on negative pressure gas source There is a flowmeter, solenoid valve leads to 13.5V direct current, inflationtime 2-3s, test request: traffic requirement 40L/min-50L/min, This step is for testing when solenoid valves are opened, the smoothness of entire pipeline;Entire survey is completed if meeting the requirements Try is rapid, is put in storage after pipeline is removed from test equipment.
As shown in Fig. 2, special test equipment is used in step 1 in order to preferably realize above-mentioned technique, including Rack 11 is respectively arranged with the end A detecting tool 12, the end B detecting tool 13 and C-terminal according to the trend of pipeline in the rack 11 Detecting tool 14, A connector are fixed in the end A detecting tool 12, and are realized by the end A detecting tool 12 and blocked and open wide, B connector It is fixed in the end B detecting tool 13, and is realized by the end B detecting tool 13 and block and open wide, C connector is fixed on C-terminal detection work It fills on 14, and is realized by C-terminal detecting tool 14 and block and open wide, in 14 side of C-terminal detecting tool of the rack 11 from upper The first guide-localization seat 15, the second guide-localization seat 16, locking device 17 and third guide-localization seat 18 are disposed under and, The lower section of the third guide-localization seat 18 is provided with the steering support base 19 being vertically arranged, pipeline is guided to the end B and is detected In tooling 13, horizontally-supported seat 20 is provided in the end B detecting tool 13, so that pipeline is horizontally directed to solenoid valve At fixing seat 21, solenoid valve is fixed, the upward cloth of pipeline postpones A connector and is fixed in the end A detecting tool 12, completes entire pipeline Installation.
As shown in figure 3, the C-terminal detecting tool 14 includes the mounting plate 14.1 being fixed in rack 11, in the installation It is provided with C-terminal fixing seat 14.2 on plate 14.1, the C-terminal fixing seat 14.2 is provided with C-terminal support base 14.3, the C-terminal branch It is provided with C-terminal activity push-pull rod 14.4 on support seat 14.3, one end of the C-terminal activity push-pull rod 14.4 is provided with C-terminal movable hand Handle 14.5, the other end are equipped with C-terminal connector plug 14.6, by acting on C-terminal flexible handle 14.5, drive C-terminal activity push-pull rod 14.4 movements are realized C-terminal connector plug 14.6 to the closure of C connector and are opened wide.Simultaneously in 14.6 position of C-terminal connector plug C-terminal gas source connector 14.7 is installed, after connecting by C-terminal gas source connector 14.7 with leak detector, is passed through gas source in C connector.
As shown in figure 4, the locking device 17 is used to pipeline positioning on the rack, facilitate pipeline to move towards, including locking Mounting base 17.1 is provided with set lever 17.2 in the locking mounting base 17.1, in one end of the set lever 17.2 It is hinged with locking pressure arm 17.3, the pushing of locking pressure arm 17.3 is realized by rotation lock handle 17.2 and is lifted, in the lock The end for pressing arm 17.3 is provided with soft compact heap 17.4, and the recessed of matching pipeline is offered on the compact heap 17.4 Pipeline is pressed in locking mounting base 17.1 by slot by the groove on compact heap 17.4.
As shown in figure 5, the end B detecting tool 13 includes the end the B support base 13.1 being fixed in rack 11, in the B The end B flexible handle 13.2 is installed on the support base 13.1 of end, the lower end of flexible handle 13.2 is hinged with the rotation of the end B at the end B Arm 13.3, flexible handle 13.2 are vertically arranged, and 13.3 horizontal direction of the end B cursor arrangement is arranged on the end B cursor 13.3 Have down-pressed pole 13.6, the end of the down-pressed pole 13.6 is provided with the locating piece 13.7 of taper, the locating piece 13.7 just under Joint sleeve 13.4 is provided on the end the B support base 13.1 of side, B connector is pressed into the connector envelope under the action of locating piece 13.7 In set 13.4, is wrapped up closed realization and blocked, the opposite face of the joint sleeve 13.4 is provided with the end B gas source connector 13.5, it is connect with leak detector.
As shown in fig. 6, the end A detecting tool 12 includes the end the A support base 12.1 being fixed in rack 11, in the A The end A flexible handle 12.2 is installed on the support base 12.1 of end, the lower end of flexible handle 12.2 is hinged with the activity of the end A at the end A Push-pull rod 12.3 is provided with A connector plug 12.4, the A connector plug 12.4 in the end of the end the A activity push-pull rod 12.3 The closure to A connector is realized under the effect of the end A flexible handle 12.2 and is opened wide.Simultaneously in 12.4 position of A end connector plug The end A gas source connector 12.5 is installed, after connecting by the end A gas source connector 12.5 with leak detector, is passed through gas source in A connector.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.

Claims (6)

1. a kind of detection method of automobile pipeline sealing performance, the automobile pipeline includes solenoid valve, tee one-way valve and three Root supervisor and a branch pipe are respectively arranged with A connector and C connector on two supervisors wherein, and the branch pipe is connected to threeway list To on valve, the branch tube end is provided with B connector, it is characterised in that: described detection method includes the following steps:
Step 1: pipeline to be tested is fixedly mounted in test equipment, enter after the installation is completed in next step;
Step 2: connecing leak detector on A connector, and it is passed through the positive pressure gas source of 600hPa, B connector and C connector are opened, solenoid valve No power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage rate≤ 10ml/min enters in next step if meeting the requirements;
Step 3: A connector is opened wide, leak detector is connect on B connector, and is passed through the negative pressure gas source of -400hPa, and C connector blocks, electromagnetism Valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage rate≤ 5ml/min enters in next step if meeting the requirements;
Step 4: A connector is opened wide, B connector is opened wide, and leak detector is connect on C connector and is passed through the negative pressure gas source of -400hPa, electromagnetism Valve no power, inflationtime 2.5-3.5s, dwell time 5-10s, testing time 3-5s, test request: leakage rate≤ 5ml/min enters in next step if meeting the requirements;
Step 5: A connector is opened wide, B connector is opened wide, and outside -50hPa negative pressure gas source is connect on C connector, and negative pressure gas source is equipped with stream Meter, solenoid valve lead to 13.5V direct current, and inflationtime 2-3s, test request: traffic requirement 40L/min-50L/min such as expires Foot requires then to complete entire testing procedure, is put in storage after pipeline is removed from test equipment.
2. a kind of detection method of automobile pipeline sealing performance according to claim 1, it is characterised in that: in step 1 Test equipment include rack, according to the trend of pipeline be respectively arranged in the rack end A detecting tool, the end B detect work Dress and C-terminal detecting tool, the C-terminal detecting tool side of the rack be disposed with from top to bottom the first guide-localization seat, Second guide-localization seat, locking device and third guide-localization seat are provided with vertical below the third guide-localization seat The steering support base of arrangement guides pipeline to the detecting tool of the end B, is provided in the detecting tool of the end B horizontally-supported Seat, so that pipeline is horizontally directed to Motionless electromagnetic valve at solenoid valve fixing seat, the upward cloth of pipeline postpones A connector and is fixed on A It holds in detecting tool, completes the installation of entire pipeline.
3. a kind of detection method of automobile pipeline sealing performance according to claim 2, it is characterised in that: the C-terminal inspection Surveying tooling includes the mounting plate being fixed on the rack, and C-terminal fixing seat is provided on the mounting plate, in the C-terminal fixing seat It is provided with C-terminal support base, C-terminal activity push-pull rod is provided on the C-terminal support base, one end of the C-terminal activity push-pull rod is set It is equipped with C-terminal flexible handle, the other end is equipped with C-terminal connector plug, while being equipped with C-terminal gas in the C-terminal connector plug position Source connector after connecting by C-terminal gas source connector with leak detector, is passed through gas source in C connector.
4. a kind of detection method of automobile pipeline sealing performance according to claim 2, it is characterised in that: the locking dress It sets on the rack, facilitating pipeline to move towards, including lock mounting base, being provided in the locking mounting base pipeline positioning Set lever is hinged with locking pressure arm in one end of the set lever, is realized under locking pressure arm by rotation lock handle It presses and lifts, the end of the locking pressure arm is provided with soft compact heap, matching pipeline is offered on the compact heap Groove, by the groove on compact heap by pipeline be pressed on locking mounting base on.
5. a kind of detection method of automobile pipeline sealing performance according to claim 2, it is characterised in that: the end the B inspection Surveying tooling includes the end the B support base being fixed on the rack, and the end B flexible handle is equipped on the support base of the end B, in the B The lower end of end flexible handle is hinged with the end B cursor, and down-pressed pole, the end of the down-pressed pole are provided on the cursor of the end B Portion is provided with the locating piece of taper, joint sleeve is provided on the end the B support base immediately below the locating piece, B connector is fixed It is pressed into the joint sleeve under the action of the block of position, the opposite face of the joint sleeve is provided with the end B gas source connector, with leak detection Instrument connection.
6. a kind of detection method of automobile pipeline sealing performance according to claim 2, it is characterised in that: the end the A inspection Surveying tooling includes the end the A support base being fixed on the rack, and the end A flexible handle is equipped on the support base of the end A, in the A The lower end of end flexible handle is hinged with the end A activity push-pull rod, and the end of the end the A activity push-pull rod is provided with A connector plug, The end A gas source connector is installed in the A end connector plug position simultaneously, after connecting by the end A gas source connector with leak detector, toward A Gas source is passed through in connector.
CN201811262450.2A 2018-10-27 2018-10-27 Method for detecting sealing performance of automobile pipeline Active CN109506854B (en)

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CN109506854B CN109506854B (en) 2020-07-31

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CN204202825U (en) * 2014-09-24 2015-03-11 常州市宝顿电子机械有限公司 The air tight test device of automobile fuel oil pipeline
CN104515655A (en) * 2013-09-29 2015-04-15 天津台信检测技术有限公司 Engine part and whole engine airtightness detection platform
US20150226630A1 (en) * 2012-10-18 2015-08-13 Mitsubishi Electric Corporation Airtightness evaluation device and airtightness evaluation method
CN206860314U (en) * 2017-06-16 2018-01-09 北京汽车动力总成有限公司 A kind of canister desorption system and automobile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267470A (en) * 1992-04-30 1993-12-07 Siemens Automotive Limited Pressure sensor mounting for canister purge system
CN2824006Y (en) * 2005-08-19 2006-10-04 比亚迪股份有限公司 Detector for sealing performance of automobile fuel system
CN102012302A (en) * 2010-11-24 2011-04-13 山东万事达专用汽车制造有限公司 Comprehensive air pressure test bed for vehicle-mounted steel tank
CN202693231U (en) * 2012-07-27 2013-01-23 浙江工贸职业技术学院 Automobile fuel oil system sealability detector
US20150226630A1 (en) * 2012-10-18 2015-08-13 Mitsubishi Electric Corporation Airtightness evaluation device and airtightness evaluation method
CN203069340U (en) * 2012-12-28 2013-07-17 浙江豪情汽车制造有限公司 Carbon tank performance detecting device
CN104515655A (en) * 2013-09-29 2015-04-15 天津台信检测技术有限公司 Engine part and whole engine airtightness detection platform
CN203629766U (en) * 2013-12-23 2014-06-04 中国兵器装备集团摩托车检测技术研究所 Gas leakage measuring device of motorcycle fuel evaporation control system
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CN206860314U (en) * 2017-06-16 2018-01-09 北京汽车动力总成有限公司 A kind of canister desorption system and automobile

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