CN109520676A - A kind of cylinder head air tight test device and its control system and operating method - Google Patents
A kind of cylinder head air tight test device and its control system and operating method Download PDFInfo
- Publication number
- CN109520676A CN109520676A CN201811437287.9A CN201811437287A CN109520676A CN 109520676 A CN109520676 A CN 109520676A CN 201811437287 A CN201811437287 A CN 201811437287A CN 109520676 A CN109520676 A CN 109520676A
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- China
- Prior art keywords
- cylinder head
- air
- air inlet
- valve
- pneumatic operated
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Classifications
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
Abstract
The invention belongs to cylinder head inspection during manufacture fields, it is related to a kind of cylinder head air tight test device and its control system and operating method, the present invention is divided into water tank, airtight test box, plug, four part of pipeline, cooperate plug by multiple air inlet pins, the air-leakage test of multistation or single-station may be implemented, detection station is more, water filling, the process that discharges water is fast, airtight checkability is high, it can use the function adjustment liquid level to discharge water, accurate judgement air leak position, its testing accuracy is examined higher than pressure-air in the prior art, its all manual operation can be adjusted to automatic operation by simple electric-control system, it is low to solve checkability in existing check system, it is easy erroneous judgement, the technical problems such as at high cost.
Description
Technical field
The invention belongs to cylinder head inspection during manufacture field, it is related to a kind of cylinder head air tight test device and its control system
With operating method.
Background technique
Cylinder head is one of main parts size of diesel engine, in process, checks that cylinder head water cavity has ne-leakage, is
One of indispensable process in diesel engine quality inspection.It is typically employed in cylinder cover cavity and pours into high pressure water, and pressure maintaining is certain
The method that time carries out hydraulic pressure detection carries out air-tightness test, but this kind of method suffers from the drawback that one, when cylinder cover cavity is empty
When gas discharge is incomplete, inner cavity cannot complete water-filling, the air-tightness of chamber portion can not detect；Two, cylinder head is due to manufacturing work
The limitation of skill, a small number of cylinder head can remain small casting sand grains in inner cavity, and during water is full of inner cavity, sand grains is possible to
Leakage is gone to water to block, and forms erroneous judgement；Three, due to that can not judge exist and miss qualified product to Micro blazed-grating when The water splash in all directions
The case where being judged to rejected product or judge rejected product at qualified product by accident；Four, the hydraulic pressure detection check time is long, also needs when doing over again
Hydraulic pressure detection is carried out again, and low efficiency of doing over again influences the delivery cycle.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of cylinder head air tight test device and its control system and behaviour
Make method, to improve the reliability and checkability of cylinder head inspection.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of cylinder head air tight test device, comprising: water tank, for storing liquid；Airtight test box, for airtight
It examines；Station is arranged in airtight test box, for installing cylinder head, which is provided in matrix form setting several into
Gas pin；Air inlet is connected with air inlet pin by tracheae for being passed through high pressure gas into air inlet pin；Water pump is used for water storage
Pumping liquid in case is arranged in water tank；Exhaust valve is arranged on tracheae for high pressure gas to be discharged；And dewatering outlet,
For liquid in airtight test box to be discarded to water tank, it is arranged in airtight test box bottom.
Optionally, muffler is additionally provided on the exhaust valve.
Optionally, the air gauge for showing intratracheal air pressure is additionally provided on the tracheae.
Optionally, further include plug for blocking the air inlet pin of not connected cylinder head.
Optionally, further include sealing ring for seal plug.
Optionally, the airtight test box is arranged above water tank or any direction, inside station is installed.It can
Selection of land further includes water pipe, and the water pipe connects water tank and airtight test box by water pump.
A kind of control system of cylinder head air tightness checking device, including the first ball valve, are connected with high pressure gas, are used for
Control system air inlet, one end far from high pressure gas are respectively communicated with total pneumatic operated valve and total solenoid valve；Total pneumatic operated valve is remote
One end from the first ball valve is connected to the second ball valve；Second ball valve is respectively communicated with several far from one end of total pneumatic operated valve and is used for
The gas controlling brancher of independent control disengaging high pressure gas；Single gas controlling brancher include divide solenoid valve, air inlet branch road and
Outlet branch, described that solenoid valve is divided to be arranged on side of second ball valve far from total pneumatic operated valve, the air inlet branch road and outlet branch
Lu Yufen solenoid valve is connected far from the side of the second ball valve；The air inlet branch road is equipped with the first pneumatic operated valve, the outlet branch
Road is equipped with the second pneumatic operated valve；First pneumatic operated valve, the second pneumatic operated valve are returned far from one end of point solenoid valve is connected to the second ball
Between valve and total pneumatic operated valve.
Optionally, second pneumatic operated valve is connected with muffler.
Optionally, the gas controlling brancher is equipped with two groups.
A kind of detection method of cylinder head air-tightness, comprising the following steps:
Cylinder head is mounted on air inlet pin；Liquid is passed through into airtight test box, liquid level did not had all cylinder head；
High pressure gas is passed through into air inlet pin；Pressure maintaining certain time observes whether generate bubble on liquid level；Empty high pressure gas in air inlet pin
Body；Empty liquid in airtight test box；Cylinder head is removed from air inlet pin.
Optionally, before " being passed through high pressure gas into air inlet pin ", the air inlet pin of cylinder head is not installed in blocking.
Optionally, in the water tank liquid be antirust agent aqueous solution.
The beneficial effects of the present invention are:
(1) airtight test box is arranged in above water tank, saves space；
(2) station is equipped with two rows, shares 12 stations, can lift 12 cylinder head simultaneously and test, checkability
It is high；Two rows of stations respectively connect an air inlet, it can be achieved that single double air inlet is examined；And the oral area of each air inlet pin is equipped with
Screw thread can be blocked when not in use with plug, it can be achieved that single-station air inlet is examined；
(3) air inlet pin is only higher by that station is a little, and the material is soft, and outer diameter and cylinder head lower part water inlet interporal lacuna are larger, hangs
Only need to be to just when dress, positioning requirements are not high, convenient for operation, can disposably lift after more than one piece cylinder head manually to just, lift efficiency
Height, and without bump injury hidden danger；
(4) two-way tracheae is respectively equipped with solenoid valve, pneumatic operated valve, it can be achieved that auto-admission and automatic deflation, gas vent installation
There is muffler, reduces noise pollution, eliminate safe hidden trouble；
(5) tracheae is equipped with air filter, it can be achieved that the airtight adjusting for examining total pressure；
(6) each branch of tracheae is equipped with solenoid directional control valve, using manual mode, is realized by crawl pressure regulation in difference
It tests under pressure condition；
(7) the injecting process has automatic hold function, and is equipped with and stops water filling button, can also be carried out according to actually required water
Control；
(8) there are dewatering outlet in airtight test box two sides of the bottom, and dewatering outlet handle need to only be lifted and be hung by aperture face water tank
It can be realized on locating piece and discharge water to water tank, realize that liquid circulation utilizes, discharge water and only need 1min, it is high-efficient；Furthermore
The function that liquid level follows air leak position is fast implemented using flush handle；
(9) plug of cylinder head water channel hole is sealed using conical surface seal circle, is screwed into, and assembly skill requirement is low, and gas
Pressure is higher, and leakproofness is better, and there is no dedicated plugs to assemble the case where gas leakage not in place need to do over again, assembly efficiency height, reliability
It is high；
(10) the airtight inspection of cylinder head of doing over again only needs 6min, does over again high-efficient；
(11) the airtight verifying attachment design when it is contemplated that all kinds of vulnerable part later periods replacement operability, installation,
Convenient disassembly is quick；
(12) workpiece surface is only equipped with plug when examining, and multiplexing interdigit is there are sufficient space, air leak position of being more convenient for
Observation, determination.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is pressure work schematic diagram of the invention；
Fig. 3 is control principle drawing of the invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of invention；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "front", "rear"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore is described in attached drawing
The term of positional relationship only for illustration, is not considered as limiting the invention, for the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Fig. 1-Fig. 3 is please referred to, the element numbers in attached drawing respectively indicate: station 1, air inlet pin 2, airtight test box 3, water
Pipe 4, tracheae 5, water pump 6, water tank 7.
The present invention relates to a kind of cylinder head air tight test devices, comprising: water tank, for storing liquid；Airtight inspection
Case is used for airtight inspection；Station is arranged in water tank, for installing cylinder head, if which is provided in matrix form setting
Dry air inlet pin；Air inlet is connected with air inlet pin by tracheae for being passed through high pressure gas into air inlet pin；Water pump is used for
The pumping liquid into water tank is arranged in water tank；Exhaust valve is arranged on tracheae for high pressure gas to be discharged；And it puts
The mouth of a river is arranged for liquid in airtight test box to be discarded to water tank in airtight test box bottom.
Optionally, muffler is additionally provided on the exhaust valve；It is additionally provided on the tracheae for showing intratracheal air pressure
Air gauge；It further include the plug for blocking the air inlet pin of not connected cylinder head；It further include the sealing ring for seal plug；Also
Including airtight test box, be arranged above water tank or any direction, inside station is installed, for observing cylinder head gas
Close situation；It further include water pipe, the water pipe connects water tank and airtight test box by water pump.
The invention further relates to a kind of control systems of cylinder head air tightness checking device, including the first ball valve, with high pressure gas
Body is connected, and is used for control system air inlet, one end far from high pressure gas is respectively communicated with total pneumatic operated valve and total solenoid valve；Institute
It states total pneumatic operated valve and is connected to the second ball valve far from one end of the first ball valve；The described one end of second ball valve far from total pneumatic operated valve connects respectively
Lead to several gas controlling branchers for independent control disengaging high pressure gas；Single gas controlling brancher includes dividing electromagnetism
Valve, air inlet branch road and outlet branch, described that solenoid valve is divided to be arranged on side of second ball valve far from total pneumatic operated valve, the air inlet
Branch and outlet branch are connected with solenoid valve is divided far from the side of the second ball valve；It is pneumatic that the air inlet branch road is equipped with first
Valve, outlet branch road are equipped with the second pneumatic operated valve；First pneumatic operated valve, the second pneumatic operated valve are separate to divide one end of solenoid valve equal
It returns and is connected between the second ball valve and total pneumatic operated valve.
Optionally, second pneumatic operated valve is connected with muffler；The gas controlling brancher is equipped with two groups.
The invention further relates to a kind of detection methods of cylinder head air-tightness, comprising the following steps:
Cylinder head is mounted on air inlet pin；Liquid is passed through into airtight test box, liquid level did not had all cylinder head；
High pressure gas is passed through into air inlet pin；Pressure maintaining certain time observes whether generate bubble on liquid level；Empty high pressure gas in air inlet pin
Body；Empty liquid in airtight test box；Cylinder head is removed from air inlet pin.
Optionally, before " being passed through high pressure gas into air inlet pin ", the air inlet pin of cylinder head is not installed in blocking；The storage
Liquid is the aqueous solution of antirust agent in water tank.
Verifying attachment in the present invention is divided into four parts, predominantly water tank, airtight test box, plug and pipeline；
Liquid needed for water tank stores airtight inspection, the liquid are the mixture that water and antirust agent are mixed in a certain proportion, and add antirust agent
Purpose be to prevent cylinder head from getting rusty, be also equipped with water pump in water tank, Model of pump, quantity need to according to inspection institute's water requirement,
Pump height, water-injection efficiency is selected；It is equipped with station in airtight test box, has compression screw hole and air inlet pin on station, into
Gas pin connects with cylinder head bottom inlet opening；There are also dewatering outlet in airtight test box, dewatering outlet size, quantity need to put according to needed for
Water efficient design, the dewatering outlet aperture face water tank；Plug consists of two parts, and is connected through a screw thread, by plug from cylinder
The insertion of lid water channel hole two sides screws；Pipeline is divided into water pipe, tracheae, and water pipe connects water tank and airtight inspection by water pump
Case, tracheae then connect pressure-air and station in workshop.
Working principle of the present invention is as follows opening the first ball valve, air inlet button is pressed, pressure-air passes through tracheae, total gas
Dynamic valve enters station, and the plug sealing ring on cylinder head water channel hole bulges, and part is fully sealed, and whether observation air gauge numerical value
Reach the pressure of examination requirements (the cylinder head requirements air pressure that this verifying attachment is examined reaches 0.5MPa-0.7MPa)；Then it presses
Start button starts pumping, and liquid in water tank is pumped into airtight test box (this verifying attachment required liquid appearance when examining by water pump
About 1 cubic metre is measured, while opening two water pump 25S to fill)；Rear pressure maintaining 5min is filled, observing liquid level at this time has bubble-free
It emerges；Dewatering outlet handle is lifted after test ending, liquid 1min can streamer；Finally press button of dying, pressure-air passes through the
One pneumatic operated valve, muffler are released in workshop, are reduced to 0MPa to pressure gauge numerical value, can be unclamped cylinder head and be hung airtight inspection
Platform.
After the airtight verifying attachment is designed, completed, the airtight checkability of cylinder head is significantly promoted.Meanwhile to test
The reliability of airtight verifying attachment is demonstrate,proved, inventor has done two tests: (1) it is airtight to examine qualified cylinder head, hydraulic pressure is done again
It is same qualified to examine；The cylinder head of airtight disqualified upon inspection, does that hydraulic test part is qualified, part is unqualified again；(2) it examines
Device is equipped with voltage regulation function, carries out test discovery by the way that air pressure is stepped up to 0.7MPa from 0MPa, and cylinder head has been when low pressure
Start gas leakage, bubble is not intensive, and as air pressure increases, bubble is more and more intensive, and liquid level boiling degree is reinforced, so gas is not present
Press through high the case where washing out the sealing element of original qualification.
For the present invention using semi-automatic design, the cost inputs such as design, installation, maintenance are low, but therefore do not reduce airtight
Checkability；Testing station of the invention is more, fill the water, the process that discharges water it is fast, airtight checkability is high；The present invention is using the hand that discharges water
Handle fast implements the function that liquid level follows air leak position, accurate judgement air leak position；Water channel hole sealing device in the present invention can
By property height；The present invention can realize that single double air inlet inspection, single-station air inlet are examined according to workpiece actual quantity；The present invention can basis
Examine pressure requirements to carry out accurate pressure value adjusting, can test whether due to examining pressure is excessive to lead to the close of qualified workpiece
Envelope position is destroyed.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of cylinder head air tight test device characterized by comprising
Water tank, for storing liquid；
Airtight test box is used for airtight inspection；
Station is arranged in airtight test box, for installing cylinder head, which is provided with several air inlets being arranged in matrix form
Pin；
Air inlet is connected with air inlet pin by tracheae for being passed through high pressure gas into air inlet pin；
Water pump is arranged in water tank for the pumping liquid into airtight test box；
Exhaust valve is arranged on tracheae for high pressure gas to be discharged；
And dewatering outlet is arranged for liquid in airtight test box to be discarded to water tank in airtight test box bottom.
2. cylinder head air tight test device as described in claim 1, which is characterized in that be additionally provided with and disappear on the exhaust valve
Sound device.
3. cylinder head air tight test device as described in claim 1, which is characterized in that be additionally provided with and be used on the tracheae
Show the air gauge of intratracheal air pressure.
4. cylinder head air tight test device as described in claim 1, which is characterized in that further include not connected for blocking
The plug of the air inlet pin of cylinder head.
5. a kind of control system of cylinder head air tightness checking device, which is characterized in that
Including the first ball valve, it is connected with high pressure gas, is used for control system air inlet, one end far from high pressure gas connects respectively
Lead to total pneumatic operated valve and total solenoid valve；
Total pneumatic operated valve is connected to the second ball valve far from one end of the first ball valve；
Second ball valve is respectively communicated with several gas for independent control disengaging high pressure gas far from one end of total pneumatic operated valve
Body controlling brancher；
Single gas controlling brancher includes dividing solenoid valve, air inlet branch road and outlet branch,
Described point of solenoid valve is arranged on side of second ball valve far from total pneumatic operated valve, the air inlet branch road and outlet branch with point
Solenoid valve is connected far from the side of the second ball valve；
The air inlet branch road is equipped with the first pneumatic operated valve, outlet branch road is equipped with the second pneumatic operated valve；
First pneumatic operated valve, the second pneumatic operated valve far from divide one end of solenoid valve return be connected to the second ball valve and total pneumatic operated valve it
Between.
6. the control system of cylinder head air tightness checking device as described in claim 5, which is characterized in that second gas
Dynamic valve is connected with muffler.
7. the control system of cylinder head air tightness checking device as described in claim 5, which is characterized in that the gas control
Branch processed is equipped with two groups.
8. a kind of detection method of cylinder head air-tightness, uses the cylinder head air-tightness as described in any one of Claims 1 to 4
Verifying attachment, which comprises the following steps:
Cylinder head is mounted on air inlet pin；
Liquid is passed through into airtight test box, liquid level did not had all cylinder head；
High pressure gas is passed through into air inlet pin；
Pressure maintaining certain time observes whether generate bubble on liquid level；
Empty high pressure gas in air inlet pin；
Empty liquid in airtight test box；
Cylinder head is removed from air inlet pin.
9. the detection method of cylinder head air-tightness as described in claim 8, which is characterized in that " be passed through into air inlet pin
Before high pressure gas ", the air inlet pin of cylinder head is not installed in blocking.
10. the detection method of cylinder head air-tightness as described in claim 8, which is characterized in that liquid in the water tank
For the aqueous solution of antirust agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437287.9A CN109520676A (en) | 2018-11-28 | 2018-11-28 | A kind of cylinder head air tight test device and its control system and operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437287.9A CN109520676A (en) | 2018-11-28 | 2018-11-28 | A kind of cylinder head air tight test device and its control system and operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520676A true CN109520676A (en) | 2019-03-26 |
Family
ID=65794808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811437287.9A Pending CN109520676A (en) | 2018-11-28 | 2018-11-28 | A kind of cylinder head air tight test device and its control system and operating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380656A (en) * | 2020-04-01 | 2020-07-07 | 中国北方车辆研究所 | Air tightness inspection tool and inspection method for spiral-flow tube type air filter |
| CN111504796A (en) * | 2020-04-29 | 2020-08-07 | 李俊 | Local compressive property detection device for pressure vessel |
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| CN204064564U (en) * | 2014-07-17 | 2014-12-31 | 潍柴动力股份有限公司 | A kind of cylinder head tightness test device |
| CN104748919A (en) * | 2013-12-25 | 2015-07-01 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN108645573A (en) * | 2018-08-10 | 2018-10-12 | 麦格纳（太仓）汽车科技有限公司 | A kind of Vehicular lamp sealing propertytest integrated test facility and device |
| CN209559421U (en) * | 2018-11-28 | 2019-10-29 | 重庆潍柴发动机有限公司 | A kind of cylinder head air tight test device and its control system |
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2018
- 2018-11-28 CN CN201811437287.9A patent/CN109520676A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748919A (en) * | 2013-12-25 | 2015-07-01 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN204064564U (en) * | 2014-07-17 | 2014-12-31 | 潍柴动力股份有限公司 | A kind of cylinder head tightness test device |
| CN108645573A (en) * | 2018-08-10 | 2018-10-12 | 麦格纳（太仓）汽车科技有限公司 | A kind of Vehicular lamp sealing propertytest integrated test facility and device |
| CN209559421U (en) * | 2018-11-28 | 2019-10-29 | 重庆潍柴发动机有限公司 | A kind of cylinder head air tight test device and its control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380656A (en) * | 2020-04-01 | 2020-07-07 | 中国北方车辆研究所 | Air tightness inspection tool and inspection method for spiral-flow tube type air filter |
| CN111504796A (en) * | 2020-04-29 | 2020-08-07 | 李俊 | Local compressive property detection device for pressure vessel |
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