CN106644285B - A kind of engine blocks sealing device existing for band self-test air pressure - Google Patents
A kind of engine blocks sealing device existing for band self-test air pressure Download PDFInfo
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- CN106644285B CN106644285B CN201611193109.7A CN201611193109A CN106644285B CN 106644285 B CN106644285 B CN 106644285B CN 201611193109 A CN201611193109 A CN 201611193109A CN 106644285 B CN106644285 B CN 106644285B
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- main plug
- plug body
- slide
- bar
- air pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/025—Details with respect to the testing of engines or engine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of engines to block sealing device existing for band self-test air pressure, and plunger body structure includes the first main plug body, the second main plug body, the first O-ring seal and connecting column；Sealing piston structure includes slide-bar, sealing piston and spring；Detection unit includes: Hall proximity transducer, sensor holder.Sealing piston structure is placed in main plug body and slides, the first O-ring seal of spring precompressed, and the sealing of the first O-ring seal variable diameter may be implemented；Meanwhile there is test gas pressure in inside, inside and outside differential pressure makes to move outside slide-bar, realizes self-locking compression O-ring seal；And realize Hall proximity transducer to whether there is or not the self-checking functions of air pressure after slide-bar displacement.The invention has the advantages that realizing the blocking function in aperture, whether the self-locking seal function of inside and outside differential pressure can also detect blocking position with the presence of pressed gas or hole location nature blocking.Have the characteristics that detect whether structure is simple, rigging up and debugging is convenient and venting pressure.
Description
Technical field
The present invention relates to engines to block detection leak test technical field, blocks band self-test gas more particularly, to a kind of engine
The existing sealing of pressure, it is suitable for automatic engines to block detection leak test equipment and instrument.
Background technique
It is to cylinder interior oil circuit, water route and gas circuit of engine etc. using blocking pressurization inspection that engine, which blocks detection leak test,
Gas is surveyed, is realized with the methods of detection pressure or detection detection gas leakage.And then the technical requirements blocked to engine are high,
The mass effect for blocking sealing is required stringent.
Engine block testing requirements blocking technology should include good airproof performance, plugging operations are good, gas leaks it is low with
And the features such as high reliablity.
Engine blocking technology hole end face press seal, hole hole wall block and mix blocking technology at present.End face pressure
Envelope compresses axial deformation using software polyurethane, nitrile rubber and silica gel etc. and goes to block aperture；Hole hole wall, which blocks, uses O-ring
Or polyurethane molded body equipressure contracting radial deformation goes to block aperture；It is the method for using both the above technology simultaneously that mixing, which blocks,.
However hole hole wall closure majority realizes that defect is obvious using pressing method, such as closure is unevenly, the service life is low and reliability is low
The disadvantages of, existing market needs sealing device existing for blocking technology band self-test air pressure.
Summary of the invention
The purpose of the invention is to make up the deficiencies in the prior art, provides a kind of engine and block band self-test air pressure and deposit
Sealing device, not only make that the sealing of O-ring seal effective variable diameter, self-locking compressions of detection gas seals and detection gas pressure
With the presence or absence of functions such as property detections, have the characteristics that sealing uniformity is good, easy to operate and structure is simple.
In order to reach the purpose of the present invention, technical solution is as follows:
A kind of engine blocks sealing device existing for band self-test air pressure, which is characterized in that close including main plug body structure
Piston structure and detection unit are sealed, the main plug body structure includes: the first main plug body, the second main plug body, first O-shaped close
Seal, the second O-ring seal and connecting column are connected between the first main plug body and the second main plug body by four connecting columns
Fixed, first O-ring seal is placed in the gap between the first main plug body and the second main plug body, and described second is O-shaped
Sealing ring is placed in the second main plug body,
The sealing piston structure includes: slide-bar, sealing piston and spring, the slide-bar and the first main plug body, second
Cooperate sliding between main plug body, and is cooperated between slide-bar and the second main plug body with the second O-ring seal and sealed, it is described close
Envelope tight with piston is fixed on slide-bar, and one end is fixed in the first main plug body after the spring passes through slide-bar, and the other end is fixed
In on the step of slide-bar one end,
The detection unit includes: Hall proximity transducer and sensor holder, and the Hall proximity transducer is placed in sensing
In device seat, the sensor holder is placed in outside slide-bar.
Preferably, the outer wall of the sealing piston and the first main plug body, the outer wall of sealing piston and the second main plug body
Between have gap.
Preferably, there are 4 ° of angles, the second main plug body seal face in the described first main plug body seal face and cylindrical surface
There are 6 ° of angles with cylindrical surface.
Preferably, there is installation gap between the Hall proximity transducer sensitive surface and the sensor holder end face.
Preferably, it is 1mm that the sensor holder and slide-bar, which stretch out maximum distance,.
The course of work: the sensor holder pressure makes slide-bar be displaced the first O-ring seal retraction, and engine is blocked band certainly
It examines sealing device existing for air pressure to be sent into engine plugging hole, the sensor holder retracts, and the spring, which is stretched out, makes slide-bar position
It moves, and opens first O-ring seal.
The invention has the benefit that
Structure provided by the present invention, which designs, can not only be such that the effective variable diameter of O-ring seal uniformly seals, detection gas
The sealing of self-locking compression and detection gas pressure with the presence or absence of functions such as property detections, have sealing uniformity it is good, it is easy to operate and
The simple feature of structure.
Detailed description of the invention
Fig. 1 is that engine blocks sealing device axonometric drawing existing for band self-test air pressure；
Fig. 2 is that engine blocks sealing device compressive state the schematic diagram of the section structure existing for band self-test air pressure；
Fig. 3 is that engine blocks sealing device sealing state the schematic diagram of the section structure existing for band self-test air pressure；
Fig. 4 is that slide-bar and sealing piston combine axonometric drawing；
Fig. 5 is that main plug body structure combines axonometric drawing.
Specific embodiment
The present invention will be further described below with reference to examples, but protection scope of the present invention is not limited solely to implement
Example.
As shown in Fig. 1,2,3,4 and 5, a kind of engine blocks sealing device existing for band self-test air pressure, including main plug
Body structure 101, sealing piston structure 102 and detection unit 103.Wherein sealing piston structure 102 is placed in main plug body structure 101
In can slide, detection unit 103 is placed on 102 axis of sealing piston structure, detection unit 103 and sealing piston structure 102
Between exist minimum 1mm spacing.
Main plug body structure 101 includes: the first main plug body 4, the second main plug body 7, the first O-ring seal 8, the 2nd O
Type sealing ring 1 and connecting column 3.It is connected and fixed between the first main plug body 4 and the second main plug body 7 by four connecting columns 3,
First O-ring seal 8 is placed in the gap between the first main plug body 4 and the second main plug body 7, and described second is O-shaped close
Seal 1 is placed in the second main plug body 7.
Sealing piston structure 102 includes: slide-bar 2, sealing piston 9 and spring 5, the slide-bar 2 and the first main plug body 4,
Cooperate sliding between second main plug body 7, and is cooperated between slide-bar 2 and the second main plug body 7 with the second O-ring seal 1 close
Envelope.9 close-fitting of sealing piston is fixed on slide-bar 2, and the first main plug body 4 is fixed in one end after the spring passes through slide-bar 2
On, the other end is fixed on the step of 2 one end of slide-bar.
Detection unit 103 includes Hall proximity transducer 12 and sensor holder 11, and the Hall proximity transducer 12 is placed in
In sensor holder 11, the sensor holder 11 is placed in outside slide-bar 2.
Have between the outer wall of sealing piston 9 and the first main plug body 4, the outer wall of sealing piston 9 and the second main plug body 7
The gap of 0.1mm.
There are 4 ° of angles on first main plug body seal face and cylindrical surface, and the second main plug body seal face and cylindrical surface have 6 °
Angle.With the installation gap of 0.5mm between Hall proximity transducer sensitive surface and the sensor holder end face.Sensor holder 11
Stretching out maximum distance with slide-bar 2 is 1mm.
Block seal operation process: there are engines need to block hole post 10, and engine need to block hole post 10 and main plug originally
There are the gaps 1mm between body structure 101, and being first pressed on sensor holder 11 is displaced slide-bar 2 and sealing piston 9, and first is O-shaped
Sealing ring 8 bounces back, and engine, which is then blocked sealing device feeding engine existing for band self-test air pressure, need to block in hole post 10,
The sensor holder 11 retracts, and the spring 5, which is stretched out, is displaced the slide-bar 2 and sealing piston 9, and realizes that spreading first is O-shaped
Sealing ring 8, first O-ring seal 8 and the first main plug body, the second main plug body 7 and engine need to block 10 shape of hole post
At extruding to seal.
It blocks the self-locking seal course of work: pouring detection gas, pressure such as 0.5Mpa, hole when engine need to block hole post 10
104 form pressure drop difference on the outside of inside 105 and hole, act on slide-bar 2, and forming secondary plugging pressurization makes slide-bar 2 and sealing piston 9
Displacement, forms the self-locking function of plugging hole.
Blocking detection gas pressure whether there is the course of work: as blocked in the self-locking seal course of work, detection gas
Pressure be displaced slide-bar 2 and sealing piston 9, and close to the Hall proximity transducer 12 on position is fixed after retraction, formed
Induction triggering.This function can detecte engine need to block hole post 10 within the engine whether it is unimpeded or blocking.Improve engine
The validity of detection.
Finally, it should be noted that above embodiments are only to illustrate the present invention and not limit described in the utility model
Technical solution, therefore, although this specification has been carried out detailed description to the utility model referring to above-mentioned each embodiment,
But those skilled in the art should understand that, it still can modify to the present invention or equivalent replacement, and all are not
It is detached from the technical solution and its improvement of the spirit and scope of the present invention, should all be covered within the scope of the claims of the present invention.
Claims (5)
1. a kind of engine blocks sealing device existing for band self-test air pressure, which is characterized in that including main plug body structure
(101), sealing piston structure (102) and detection unit (103), the main plug body structure includes: the first main plug body (4),
Second main plug body (7), the first O-ring seal (8), the second O-ring seal (1) and connecting column (3), the first main plug body
And second be connected and fixed between main plug body by four connecting columns (3), first O-ring seal (8) be placed in the first main plug this
In gap between body and the second main plug body, second O-ring seal (1) is placed in the second main plug body (7),
The sealing piston structure (102) includes: slide-bar (2), sealing piston (9) and spring (5), the slide-bar and the first main plug
Cooperate sliding between ontology, the second main plug body, and close with the cooperation of the second O-ring seal between slide-bar and the second main plug body
Envelope, the sealing piston close-fitting are fixed on slide-bar, and one end is fixed in the first main plug body after the spring passes through slide-bar, separately
One end is fixed on the step of slide-bar one end,
The detection unit (103) includes: Hall proximity transducer (12) and sensor holder (11), the Hall proximity transducer
It is placed in sensor holder, the sensor holder is placed in outside slide-bar.
2. engine according to claim 1 blocks sealing device existing for band self-test air pressure, which is characterized in that described close
Sealing has gap between the outer wall and the first main plug body (4), the outer wall of sealing piston and the second main plug body (7) of piston.
3. engine according to claim 1 blocks sealing device existing for band self-test air pressure, which is characterized in that described the
There are 4 ° of angles on one main plug body seal face and cylindrical surface, and there are 6 ° of angles on the second main plug body seal face and cylindrical surface.
4. engine according to claim 1 blocks sealing device existing for band self-test air pressure, which is characterized in that it is described suddenly
There is installation gap between that proximity sensor sensitive surface and the sensor holder end face.
5. engine according to claim 1 blocks sealing device existing for band self-test air pressure, which is characterized in that the biography
It is 1mm that sensor seat and slide-bar, which stretch out maximum distance,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193109.7A CN106644285B (en) | 2016-12-21 | 2016-12-21 | A kind of engine blocks sealing device existing for band self-test air pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193109.7A CN106644285B (en) | 2016-12-21 | 2016-12-21 | A kind of engine blocks sealing device existing for band self-test air pressure |
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| Publication Number | Publication Date |
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| CN106644285A CN106644285A (en) | 2017-05-10 |
| CN106644285B true CN106644285B (en) | 2019-08-02 |
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| CN201611193109.7A Active CN106644285B (en) | 2016-12-21 | 2016-12-21 | A kind of engine blocks sealing device existing for band self-test air pressure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568799A (en) * | 2018-06-07 | 2018-09-25 | 上海天永智能装备股份有限公司 | A kind of easy-to-mount AGV pantries pallet |
| CN110631768A (en) * | 2019-09-04 | 2019-12-31 | 天永机械电子（太仓）有限公司 | Sealing device for engine plugging with self-checking air pressure existence |
| CN112213029B (en) * | 2020-11-11 | 2022-06-10 | 麦克传感器股份有限公司 | Calibration test sealing structure of wide-temperature pressure sensor |
| CN114166437B (en) * | 2021-12-03 | 2023-06-27 | 成都秦川物联网科技股份有限公司 | Electromechanical valve tightness detection equipment and method suitable for intelligent manufacturing of Internet of things |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09288030A (en) * | 1996-04-23 | 1997-11-04 | Nippon Soken Inc | Oil leakage detecting system for onboard engine |
| CN101173875A (en) * | 2006-10-31 | 2008-05-07 | 扬动股份有限公司 | Engine cylinder oil duct sealing inspection method and inspection device |
| CN201028991Y (en) * | 2007-03-08 | 2008-02-27 | 重庆宗申技术开发研究有限公司 | Device for fast sealing hole wall |
| CN203162142U (en) * | 2013-03-21 | 2013-08-28 | 广州市井源机电设备有限公司 | Hole sealing tool for leakage detection |
| CN103528761B (en) * | 2013-10-24 | 2015-07-08 | 安徽江淮汽车股份有限公司 | Internal expansion block sealing device for hole |
| CN204881992U (en) * | 2015-08-24 | 2015-12-16 | 重庆科杰实业有限责任公司 | Bolt -up end cap assembly |
| CN105628306B (en) * | 2015-11-12 | 2018-02-02 | 济南吉利汽车零部件有限公司 | Leakage tester blocking component |
| CN205352618U (en) * | 2015-12-14 | 2016-06-29 | 湖南罗佑发动机部件有限公司 | Sealed end cap frock of engine oil chi pipe mounting hole |
| CN105546112B (en) * | 2016-01-14 | 2018-07-20 | 安徽江淮汽车集团股份有限公司 | A kind of engine water channel plugging device |
| CN205745845U (en) * | 2016-05-17 | 2016-11-30 | 南京斯凯汽车设备制造有限责任公司 | A kind of engine pipelines fast plugging device |
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