CN106644285A - Engine plugging sealing device having function of air pressure existence self-checking - Google Patents

Engine plugging sealing device having function of air pressure existence self-checking Download PDF

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Publication number
CN106644285A
CN106644285A CN201611193109.7A CN201611193109A CN106644285A CN 106644285 A CN106644285 A CN 106644285A CN 201611193109 A CN201611193109 A CN 201611193109A CN 106644285 A CN106644285 A CN 106644285A
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CN
China
Prior art keywords
main plug
sealing
self
slide
bar
Prior art date
Application number
CN201611193109.7A
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Chinese (zh)
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CN106644285B (en
Inventor
荣俊林
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上海天永智能装备股份有限公司
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Priority to CN201611193109.7A priority Critical patent/CN106644285B/en
Publication of CN106644285A publication Critical patent/CN106644285A/en
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Publication of CN106644285B publication Critical patent/CN106644285B/en

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Classifications

    • 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
    • G01M3/025Details with respect to the testing of engines or engine parts

Abstract

The invention discloses an engine plugging sealing device having the function of air pressure existence self-checking. A plunger body structure includes a first main plug body, a second main plug body, a first O-shaped sealing ring, and a connecting column, a sealing piston structure includes a slip shaft, a sealing piston and a spring; and a detection unit comprises a Hall proximity sensor and a sensor seat. The sealing piston structure slides in the main plug body, the spring precompresses the first O-shaped sealing ring to realize the variable diameter sealing of the first O-shaped sealing ring; and meanwhile, the inner side has test gas pressure, the inner and outer pressure difference enables the slip shaft to move outwards, so that the self-locking and compression of the O-shaped sealing ring can be realized, and the air-pressure self-checking function after the Hall proximity sensor makes the slip shaft displace is achieved. The sealing device is advantageous in that the aperture plugging function is achieved, the inner and outer pressure difference self-locking and sealing function is achieved, and whether the plugging position has pressure gas or the hole position has natural plugging can be detected; and has the characteristics of simple structure, convenient device installation debugging, and possible ventilation pressure detection.

Description

Engine blocks the sealing device existed with self-inspection air pressure

Technical field

The present invention relates to engine closure detection leak test technical field, more particularly, to a kind of engine band self-inspection gas is blocked The sealing that pressure is present, it is applied to automatic engine closure detection leak test equipment and instrument.

Background technology

Engine closure detection leak test is the cylinder interior oil circuit to engine, water route and gas circuit etc. using blocking pressurization inspection Gas is surveyed, is realized with the method such as detection pressure or detection detection gas leakage.And then it is high to the technical requirements of engine closure, The mass effect of closure sealing is required strictly.

Engine closure detection requires that blocking technology should have:Good airproof performance, plugging operations are good, gas leaks it is low with And reliability it is high the features such as.

At present engine blocking technology hole end face press seal, hole hole wall block and mix blocking technology.End face pressure Envelope goes to block aperture using the compression axial deformation such as software polyurethane, nitrile rubber and silica gel;The closure of hole hole wall adopts O-ring Or polyurethane molded body equipressure contracting radial deformation goes to block aperture;Mixing closure is simultaneously using the method for both the above technology. But the closure of hole hole wall is most is realized using pressing method, defect substantially, such as blocks that the uneven, life-span is low and reliability is low The shortcomings of, existing market needs the sealing device that blocking technology exists with self-inspection air pressure.

The content of the invention

The invention aims to make up the deficiencies in the prior art, there is provided a kind of engine closure band self-inspection air pressure is deposited Sealing device, it not only makes the sealing of O-ring seal effective reducing, the self-locking of detection gas compress sealing and detect gas pressure With the presence or absence of functions such as property detections, with sealing, uniformity is good, easy to operate and the characteristics of simple structure.

In order to reach the purpose of the present invention, technical scheme is as follows:

A kind of engine blocks the sealing device existed with self-inspection air pressure, it is characterised in that close including main plug body construction Envelope piston structure and detector unit, the main plug body construction is included:It is first main plug body, the second main plug body, first O-shaped close Seal, the second O-ring seal and connecting pole, are connected between the first main plug body and the second main plug body by four connecting poles Fixed, in the gap that first O-ring seal is placed between the first main plug body and the second main plug body, described second is O-shaped Sealing ring is placed in the second main plug, and this is internal,

The sealing piston structure includes:Slide-bar, sealing piston and spring, the slide-bar and first it is main plug body, second Coordinate between main plug body and slide, and with the second O-ring seal fitted seal between slide-bar and the second main plug body, it is described close Envelope tight with piston is fixed on slide-bar, and the spring is fixed on the first main plug body through one end after slide-bar, and the other end is fixed On the step of slide-bar one end,

The detector unit is included:Hall proximity transducer and sensor holder, 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, the described first main plug body seal face has 4 ° of angles, the second main plug body seal face with the face of cylinder There are 6 ° of angles with the face of cylinder.

Preferably, have between the Hall proximity transducer sensitive surface and the sensor holder end face and gap is installed.

Preferably, it is 1mm that the sensor holder stretches out maximum distance with slide-bar.

The course of work:The sensor holder pressure makes the O-ring seal of slide-bar displacement first bounce back, and by engine closure band certainly The sealing device that inspection air pressure is present is sent into engine plugging hole, and the sensor holder is retracted, and the spring is stretched out makes slide-bar position Move, and open first O-ring seal.

The device have the advantages that:

Structure design provided by the present invention not only can make the effective reducing of O-ring seal uniformly seal, detect gas Self-locking compress sealing and detect gas pressure with the presence or absence of property detection etc. function, with sealing uniformity it is good, easy to operate and The characteristics of simple structure.

Description of the drawings

Fig. 1 is that engine blocks the sealing device axonometric drawing existed with self-inspection air pressure;

Fig. 2 is that engine blocks the sealing device compressive state cross-sectional view existed with self-inspection air pressure;

Fig. 3 is that engine blocks the sealing device sealing state cross-sectional view existed with self-inspection air pressure;

Fig. 4 is slide-bar and sealing piston combination axonometric drawing;

Body construction combination axonometric drawing is filled in based on Fig. 5.

Specific embodiment

With reference to embodiment, the invention will be further described, 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 the sealing device existed with self-inspection air pressure, including main plug is originally Body structure 101, sealing piston structure 102 and detector unit 103.Wherein sealing piston structure 102 is placed in main plug body construction 101 In can slide, detector unit 103 is placed on the axis of sealing piston structure 102, detector unit 103 and sealing piston structure 102 Between exist minimum 1mm spacing.

Main plug body construction 101 is included: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 pole 3.First main plug body 4 and second main the plug is connected between body 7 by four connecting poles 3, First O-ring seal 8 is placed in the first main gap filled between the main plug body 7 of body 4 and second, 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 main plug body 4 of the slide-bar 2 and first, Coordinate between second main plug body 7 and slide, and coordinate close with the second O-ring seal 1 between the main plug body 7 of slide-bar 2 and second Envelope.The close-fitting of the sealing piston 9 is fixed on slide-bar 2, and the spring is fixed on the first main plug body 4 through one end after slide-bar 2 On, the other end is fixed on the step of the one end of slide-bar 2.

Detector 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.

First main plug body seal face has 4 ° of angles with the face of cylinder, and the second main plug body seal face has 6 ° with the face of cylinder Angle.Installation gap with 0.5mm between Hall proximity transducer sensitive surface and the sensor holder end face.Sensor holder 11 It is 1mm to stretch out maximum distance with slide-bar 2.

Closure seal operation process:There is engine need to block hole post 10, and engine need to block hole post 10 and main plug sheet There is 1mm gaps between body structure 101, being first pressed on sensor holder 11 makes slide-bar 2 and the displacement of sealing piston 9, and first O-shaped Sealing ring 8 bounces back, and then engine is blocked the sealing device feeding engine existed with self-inspection air pressure need to block in hole post 10, The sensor holder 11 is retracted, and the spring 5 is stretched out makes the slide-bar 2 and the displacement of sealing piston 9, and realizes that spreading first is O-shaped Sealing ring 8, the main plug body of first O-ring seal 8 and first, the second main plug body B and engine need to block the shape of hole post 10 Into extruding so as to sealing.

The closure self-locking seal course of work:Detection gas, pressure such as 0.5Mpa, hole are poured when engine need to block hole post 10 Inner side 105 and hole outside 104 form pressure drop difference, act on slide-bar 2, and forming secondary plugging pressurization makes slide-bar 2 and sealing piston 9 Displacement, forms the auto-lock function of plugging hole.

Closure detection gas pressure whether there is the course of work:In as blocked the self-locking seal course of work, gas is detected Pressure make slide-bar 2 and the displacement of sealing piston 9, and close to the Hall proximity transducer 8 on fixed position after retraction, form sense Should trigger.This function can detect that engine need to block whether unimpeded hole post 10 within the engine or blocking.Machine examination is started in raising The validity of survey.

Finally it should be noted that:Above example only not limits technology described in the invention to illustrate the present invention Scheme, therefore, although this specification with reference to each above-mentioned embodiment pair present invention has been detailed description, this Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent, and all are without departing from this The technical scheme of the spirit and scope of invention and its improvement, it all should cover in scope of the presently claimed invention.

Claims (5)

1. a kind of engine blocks the sealing device existed with self-inspection air pressure, it is characterised in that including main plug body construction (101), sealing piston structure (102) and detector unit (103), the main plug body construction is included:First main plug body (4), Second main plug body (7), the first O-ring seal (8), the second O-ring seal (1) and connecting pole (3), the first main plug body And second it is main plug body between be connected by four connecting poles (3), first O-ring seal (8) be placed in first it is 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 Coordinate between body, the second main plug body and slide, and coordinate close with the second O-ring seal between slide-bar and the second main plug body Envelope, the sealing piston close-fitting is fixed on slide-bar, and the spring is fixed on the first main plug body, separately through one end after slide-bar One end is fixed on the step of slide-bar one end,
The detector 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 the sealing device existed with self-inspection air pressure, it is characterised in that described close There is gap between the outer wall of envelope piston and the first main plug body (4), the outer wall of sealing piston and the second main plug body (7).
3. engine according to claim 1 blocks the sealing device existed with self-inspection air pressure, it is characterised in that described the One main plug body seal face has 4 ° of angles with the face of cylinder, and the second main plug body seal face has 6 ° of angles with the face of cylinder.
4. engine according to claim 1 blocks the sealing device existed with self-inspection air pressure, it is characterised in that it is described suddenly Have between that proximity transducer sensitive surface and the sensor holder end face and gap is installed.
5. engine according to claim 1 blocks the sealing device existed with self-inspection air pressure, it is characterised in that the biography It is 1mm that sensor seat stretches out maximum distance with slide-bar.
CN201611193109.7A 2016-12-21 2016-12-21 A kind of engine blocks sealing device existing for band self-test air pressure CN106644285B (en)

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

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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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CN106644285B CN106644285B (en) 2019-08-02

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Citations (10)

* Cited by examiner, † Cited by third party
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
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
CN101173875A (en) * 2006-10-31 2008-05-07 扬动股份有限公司 Method and device for checking oil channel sealing of engine cylinder
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
CN103528761A (en) * 2013-10-24 2014-01-22 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
CN105546112A (en) * 2016-01-14 2016-05-04 安徽江淮汽车股份有限公司 Engine waterway plugging device
CN105628306A (en) * 2015-11-12 2016-06-01 浙江吉利罗佑发动机有限公司 Test leakage machine plugging assembly
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
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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 Method and device for checking oil channel sealing of engine cylinder
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
CN103528761A (en) * 2013-10-24 2014-01-22 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
CN105628306A (en) * 2015-11-12 2016-06-01 浙江吉利罗佑发动机有限公司 Test leakage machine plugging assembly
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
CN105546112A (en) * 2016-01-14 2016-05-04 安徽江淮汽车股份有限公司 Engine waterway 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
柴红卫等: "新型二次密封试压装置", 《机械工程师》 *

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