CN201331421Y - Air tightness detecting device of engine cylinder head - Google Patents
Air tightness detecting device of engine cylinder head Download PDFInfo
- Publication number
- CN201331421Y CN201331421Y CNU2008202045878U CN200820204587U CN201331421Y CN 201331421 Y CN201331421 Y CN 201331421Y CN U2008202045878 U CNU2008202045878 U CN U2008202045878U CN 200820204587 U CN200820204587 U CN 200820204587U CN 201331421 Y CN201331421 Y CN 201331421Y
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- combustion chamber
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- spherical combustion
- engine cylinder
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Abstract
The utility model discloses an air tightness detecting device of engine cylinder head, which comprises a detecting air supply which supplies gas to a spherical combustion chamber, and a laminar flow pipe which is connected with an air inlet pipeline and/or an exhausting pipeline, wherein a valve and a pressure gauge are further connected between the detecting air supply and the spherical combustion chamber, a differential pressure gauge is connected on the laminar flow pipe, an air filter, a pressure reducing valve, an oil-fog separator and a make-and-break valve are further connected between the detecting air supply and the spherical combustion chamber, after a to-be detected sealed space (the spherical combustion chamber) is filled with gas with constant pressure, leaked gas flows through the laminar flow pipe on a sealed cavity through a pipeline and enters into atmosphere, the differential pressure gauge rapidly measures the actual leakage amount of the to-be detected sealed space in fixed amount, thereby acquiring the air tightness of the sealing surface of a cylinder head, the detecting results are displayed through the differential pressure gauge, which is directviewing and clear, does not need converting, and does not limit the measuring range.
Description
Technical field
The utility model relates to a kind of mechanical part air-tightness detection device, relates in particular to a kind of bubble-tight device of detection of engine cylinder cap sealing surface that is applied to.
Background technology
In automobile manufacture industry, the quality of engine cylinder cover sealing surface air-tightness directly has influence on the overall performance of engine, existing a kind of engine cylinder cover, as shown in Figure 1, comprise spherical combustion chamber 55, air inlet pipeline 56 that is communicated with spherical combustion chamber 55 and gas exhaust piping 53, and be arranged on the inlet valve tappet 58 in the air inlet pipeline 56 and be arranged on exhaust valve lifter 51 in the gas exhaust piping 53, spherical combustion chamber 55 is provided with shutoff GA face 54, two valve lifters are externally under the effect of camshaft, cycle back and forth is communicated with, block gas exhaust piping, path between air inlet pipeline and the spherical combustion chamber, thereby realize charging into of the indoor mixed gas of engine combustion, burning, acting, the action of discharging, the sealing surface of the metal-clad ring-type between this cylinder cap two valve lifter front end faces and the spherical combustion chamber roof (also being valve door line), be the place that might have leakage, must carry out strict detection before dispatching from the factory.
The present device that this cylinder head valve impermeability is detected, known generally all is immersion bubble proving installation or differential pressure leak detecting device.
When immersion bubble proving installation, principle of work were based on the small opening both sides and have pressure reduction, probe gas flowed from small opening high pressure direction finding low-pressure side, imposes demonstration liquid in low-pressure side, and the small opening place will blow afloat bubble and realize.This proving installation too much relies on and gives operating personnel, though can search leak source, can not quantitatively provide leakage rate, and automaticity is not high, and needs to increase the workpiece that soak such as is dried at aided process, production cycle, production cost growth.
The differential pressure leak detecting device, be not have the tested workpiece of leakage with one to make standard items, simultaneously more tested workpiece and standard items two separate gas sealing system pressure drop values in the section at the appointed time after standard items and tested workpiece charge into gas are decision making by accurate differential pressure pick-up sensing.The pressure difference of leakage can fast, be quantitatively measured in this test, obtain actual leakage rate through converting, but be exactly owing to be through converting, so when the leakage of workpiece is excessive, cause the loss of measured workpiece internal pressure very soon too much, the leakage rate that converses is very big, untrue with actual leakage deviation.
Therefore, develop quick, the quantitative measurement amount of leakage of a kind of energy, simple and clear need not of testing result converted, measured the unrestricted engine cylinder cover air-tightness detection device of range, is industry assistant officer problem to be solved.
The utility model content
The purpose of this utility model is to provide a kind of engine cylinder cover air-tightness detection device, the amount of leakage of the measurement engine cylinder cover sealing surface that it can be quick, quantitative, and intuitive measurement results understand need not to convert, to measure range unrestricted.
The technical scheme that its technical matters that solves the utility model adopts is: the engine cylinder cover air-tightness detection device, comprise to spherical combustion chamber the detection source of the gas of gas and the laminar flow pipe that is connected with air inlet pipeline and/or gas exhaust piping are provided, also be connected with valve and tensimeter between described detection source of the gas and the spherical combustion chamber, be connected with differential manometer on the described laminar flow pipe.
Also be connected with air strainer, reduction valve, oil mist separator and on-off valve between described detection source of the gas and the spherical combustion chamber.
Described detection source of the gas is connected with spherical combustion chamber after connecting valve, air strainer, reduction valve, oil mist separator, tensimeter, on-off valve successively.
The beneficial effects of the utility model are: if with the shutoff of cylinder cap GA face, seal cavity to be detected is regarded in the space that spherical combustion chamber and two valve lifters constitute as, then gas exhaust piping is with respect to the sealing space, air inlet pipeline is with respect to the sealing space, all constitute one and can collect the sealed chamber that reveals gas, thereby, the utility model device has constituted an impermeability detection system as shown in Figure 2, seal cavity to be detected charges into after the gas of constant pressure, the gas that leaks out flows through the laminar flow pipe that is connected in the sealed chamber by pipeline and enters atmosphere, differential pressure gauge is quick, the quantitative actual leakage rate of measuring seal cavity to be detected, can understand the impermeability of cylinder cap sealing surface, testing result shows that by differential pressure gauge simple and clear need not converted, the measurement range is unrestricted.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of engine cylinder cover to be detected;
Fig. 2 is the principle of work simplified schematic diagram of the utility model device;
Fig. 3 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to shown in Figure 3, the engine cylinder cover air-tightness detection device, comprise to spherical combustion chamber 55 the detection source of the gas 10 of gas and the laminar flow pipe 80 that is connected with air inlet pipeline 56 and/or gas exhaust piping 53 are provided, also be connected with valve 20 and tensimeter 30 between described detection source of the gas 10 and the spherical combustion chamber 55, be connected in parallel to differential manometer 70 on the described laminar flow pipe 80, if shutoff GA face 54 with cylinder cap, seal cavity to be detected is regarded in spherical combustion chamber 55 and two valve lifters 51 and 58 spaces that constitute as, then gas exhaust piping 53 is with respect to the sealing space, air inlet pipeline 56 is with respect to the sealing space, all constitute one and can collect the sealed chamber 60 that reveals gas, thereby, the utility model device has constituted an impermeability detection system as shown in Figure 2, seal cavity 50 to be detected charges into after the gas of constant pressure, the gas that leaks out flows through the laminar flow pipe 80 that is connected in the sealed chamber 60 by pipeline and enters atmosphere, differential pressure gauge 70 is quick, the quantitative actual leakage rate of measuring seal cavity 50 to be detected, can understand the impermeability of cylinder cap sealing surface, testing result presses meter to show by differential pressure gauge, mode with electric signal has been given measured value, and simple and clear need not converted, the measurement range is unrestricted.
Wherein, also be connected with air strainer 11 between described detection source of the gas 10 and the spherical combustion chamber 55, be used for removing impurity such as moisture that gas is mixed with, micronic dust; Also be connected with reduction valve 12, be used for gaseous tension is adjusted to the needed value of cylinder cap; Also be connected with oil mist separator 13, remove the mist of oil molecule in the pressurized air, effectively protect differential pressure gauge; Also be connected with on-off valve 40.Through filtration, decompression, etc. the pressurized air after handling, be exactly the final test gas that uses, through the monitoring and the demonstration of tensimeter 30, the permission through on-off valve 40 fills into spherical combustion chamber 55, realizes the detection gas replenishment process to the cylinder cap sealing surface.
As a kind of specific embodiment of the present utility model, described detection source of the gas 10 is connected to shutoff with GA face 54 after connecting valve 20, air strainer 11, reduction valve 12, oil mist separator 13, tensimeter 30, on-off valve 40 successively, is connected with spherical combustion chamber 55.General factory is with the pressure gas of 5～6kgf/cm2; the manual residual voltage relief valve VHS40 of process (SMC) allows to flow among the air strainer AF40-02BD (SMC); carry out effective filtering of impurity such as moisture, micronic dust; pass through accurate reduction valve IR2020-02 (SMC) again and be adjusted to the detected pressures that cylinder cap needs; and then carry out oil mist separator AFM40-02BD (smc); remove compressed-air actuated mist of oil molecule, effectively protection detects the differential pressure gauge in the loop.Like this through filtration, decompression, etc. the pressurized air after handling, the final exactly test of the using body of calming the anger.The test pressure Table I SE40 (SMC) that flows through monitoring and show passes through the permission of electromagnetism on-off valve VDW31-5DL-402 (SMC) again, charges in the spherical combustion chamber, realizes the detection gas replenishment process to the cylinder cap workpiece.
The foregoing description is illustrative principle of the present utility model and effect thereof only, and the embodiment of part utilization, but not is used to limit the utility model; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (7)
1, engine cylinder cover air-tightness detection device, comprise to spherical combustion chamber (55) the detection source of the gas (10) of gas and the laminar flow pipe (80) that is connected with air inlet pipeline (56) and/or gas exhaust piping (53) are provided, it is characterized in that: also be connected with valve (20) and tensimeter (30) between described detection source of the gas (10) and the spherical combustion chamber (55), be connected with differential manometer (70) on the described laminar flow pipe (80).
2, engine cylinder cover air-tightness detection device according to claim 1 is characterized in that, described differential manometer (70) and laminar flow pipe (80) are in parallel.
3, engine cylinder cover air-tightness detection device according to claim 1 and 2 is characterized in that, also is connected with air strainer (11) between described detection source of the gas (10) and the spherical combustion chamber (55).
4, engine cylinder cover air-tightness detection device according to claim 3 is characterized in that, also is connected with reduction valve (12) between described detection source of the gas (10) and the spherical combustion chamber (55).
5, engine cylinder cover air-tightness detection device according to claim 4 is characterized in that, also is connected with oil mist separator (13) between described detection source of the gas (10) and the spherical combustion chamber (55).
6, engine cylinder cover air-tightness detection device according to claim 5 is characterized in that, also is connected with on-off valve (40) between described detection source of the gas (10) and the spherical combustion chamber (55).
7, engine cylinder cover air-tightness detection device according to claim 6, it is characterized in that described detection source of the gas (10) connects valve (20), air strainer (11), reduction valve (12), oil mist separator (13), tensimeter (30), on-off valve (40) successively and is connected with spherical combustion chamber (55) afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202045878U CN201331421Y (en) | 2008-12-03 | 2008-12-03 | Air tightness detecting device of engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202045878U CN201331421Y (en) | 2008-12-03 | 2008-12-03 | Air tightness detecting device of engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331421Y true CN201331421Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202045878U Expired - Fee Related CN201331421Y (en) | 2008-12-03 | 2008-12-03 | Air tightness detecting device of engine cylinder head |
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| CN (1) | CN201331421Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928179A (en) * | 2012-11-08 | 2013-02-13 | 南车戚墅堰机车有限公司 | Device for testing tightness of combustors of diesel engine |
| CN103954407A (en) * | 2014-04-22 | 2014-07-30 | 河北工业大学 | Engine cylinder cover oil channel leakage testing device |
| CN103808465B (en) * | 2012-11-14 | 2016-01-27 | 中国科学院沈阳计算技术研究所有限公司 | A kind of automobile engine cylinder head impermeability test equipment |
| CN105387977A (en) * | 2015-09-14 | 2016-03-09 | 沈阳航空航天大学 | Installing edge leak detection system and method for two-chamber three-pressure zone structure of aero-engine |
| CN105806570A (en) * | 2016-05-16 | 2016-07-27 | 沈阳紫微机电设备有限公司 | Gas leak-checking detecting device |
| CN110249211A (en) * | 2017-02-27 | 2019-09-17 | 尔克·艾西 | Combustion chamber leak detection external member in car engine |
-
2008
- 2008-12-03 CN CNU2008202045878U patent/CN201331421Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928179A (en) * | 2012-11-08 | 2013-02-13 | 南车戚墅堰机车有限公司 | Device for testing tightness of combustors of diesel engine |
| CN103808465B (en) * | 2012-11-14 | 2016-01-27 | 中国科学院沈阳计算技术研究所有限公司 | A kind of automobile engine cylinder head impermeability test equipment |
| CN103954407A (en) * | 2014-04-22 | 2014-07-30 | 河北工业大学 | Engine cylinder cover oil channel leakage testing device |
| CN105387977A (en) * | 2015-09-14 | 2016-03-09 | 沈阳航空航天大学 | Installing edge leak detection system and method for two-chamber three-pressure zone structure of aero-engine |
| CN105387977B (en) * | 2015-09-14 | 2018-09-14 | 沈阳航空航天大学 | A kind of two chambers, three pressure plot structure for aero-engine installs side leak detection system and method |
| CN105806570A (en) * | 2016-05-16 | 2016-07-27 | 沈阳紫微机电设备有限公司 | Gas leak-checking detecting device |
| CN110249211A (en) * | 2017-02-27 | 2019-09-17 | 尔克·艾西 | Combustion chamber leak detection external member in car engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20121203 |