CN1746647A - Method for testing air tightness of cylinder body and cylinder cover of diesel engine - Google Patents
Method for testing air tightness of cylinder body and cylinder cover of diesel engine Download PDFInfo
- Publication number
- CN1746647A CN1746647A CN 200410041916 CN200410041916A CN1746647A CN 1746647 A CN1746647 A CN 1746647A CN 200410041916 CN200410041916 CN 200410041916 CN 200410041916 A CN200410041916 A CN 200410041916A CN 1746647 A CN1746647 A CN 1746647A
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- water
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- diesel engine
- water tank
- pressure
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Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 7
- 230000003028 elevating effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229940059082 douche Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
- Testing Of Engines (AREA)
Abstract
A method for detecting the air tightness of a cylinder body and a cylinder cover of a diesel engine belongs to a mechanical part detection process and mainly comprises the following operation steps: positioning and clamping the cylinder body or the cylinder cover in a clamp, and simultaneously sealing the water channel to only leave an air inlet; (b) high-pressure gas with the pressure of 300KPa to 400KPa is input into the inner cavity of the workpiece water channel through a gas pipeline; (c) a water storage device or a lifting mechanism of the outer water tank and the inner water tank are reversely buckled, so that the workpiece is submerged into water; (d) and observing whether bubbles exist in water, and judging whether the air tightness of the workpiece is qualified. The invention is used for the airtightness test of the cylinder cover of the diesel engine cylinder body, overcomes the defects of misjudgment caused by air bags and sand grains and easy occurrence of electric appliance accidents caused by splash splashing in the existing water injection method test, has the advantages of good test effect and good safety, simultaneously directly utilizes a workshop air source, does not need an external water source, is convenient to operate and saves the cost.
Description
Technical field
The present invention relates to a kind of component of machine air tight test technology, particularly diesel engine cylinder block cylinder cap air tight test method.
Background technology
Cylinder body, cylinder cap are one of main parts of diesel engine, in process, check cylinder body, the cylinder cap water channel has or not seepage, is one of indispensable operation in the diesel engine quality inspection.Chang Yong detection method was to utilize special-purpose squeezer in the past, by the driven by motor water pump, poured water in the chamber to cylinder body, cylinder cap water channel, line pressure is adjusted to required pressure after, check in required time whether appearance has the seepage phenomenon.There are many drawbacks in this detection method, at first, has unacceptable product sometimes and does not detect, its reason has a lot, such as, when cylinder body, cylinder cap inner chamber air discharge unclear, just make inner chamber can not fully be full of the water source, the part at underfill water source just detects not come out like this; And for example, during owing to this operation of detection, may also there be atomic little casting sand grains in some workpiece lumen, because of aqueous solution has certain adsorbability, when water slowly was full of inner chamber, these sand grains just might be gone to leakage and leakage is temporarily blocked with water, cause erroneous judgement; For another example, before this operation, oil injector hole copper sheathing and all baffle holes of cylinder cap all seal with fluid sealant, but sealing place seepage whether, this method just be can not check at all.Secondly, this method forms spray easily and splashes everywhere, and the place humidity influences work, might cause the short circuit of circuit, or burns out the accident of motor, also might judge into certified products by accident unacceptable product because spray splashes.In addition, this method also needs external water source, and operation is convenient inadequately.
Summary of the invention
The technical problem to be solved in the present invention is to overcome to adopt the bubble-tight above-mentioned weak point of douche check cylinder block and head water channel in the existing diesel industry, provide a kind of test effect good, operation is convenient again, and the high airtight method of inspection of diesel engine cylinder block cylinder cap of safe reliability.
Technical scheme of the present invention is: operate (a) as follows cylinder body or cylinder cap are located in anchor clamps and clamped, seal each window, water hole that side surface of workpiece communicates with water channel simultaneously, only have an air intake opening to communicate with pipeline; (b) be the gases at high pressure of 300Kpa～400Kpa by pipeline to workpiece water channel inner chamber input pressure; (c) all flood workpiece in the clear water; (d) have or not bubble in the observation water, judge whether air tightness of workpiece is qualified; (e) with workpiece and moisture from, discharging workpiece inner high voltage gas, and from anchor clamps, unload workpiece, check finishes.
Further, should comprise tracheae, joint, ball valve, pressure regulator valve, tensimeter in the used pipeline, earlier the gas of high-pressure air source be adjusted to required pressure and import to the workpiece water channel again.
Described step (c) is to adopt the water storage device of back-off inner water tank in the outer water tank, and inwardly water tank cavity top inflation forces the water in the inner water tank to enter outer water tank, up to flooding workpiece; Or the anchor clamps of clamping workpiece are slowly put into water by elevating mechanism.Used elevating mechanism can be a leading screw---drag-cup type reciprocator, or chain, sprocket-type elevating mechanism, or other similar means can be manual, also can be electronic, pneumatic types.
Adopt method of the present invention that the diesel engine cylinder block cylinder cap is carried out airtight check, because to water channel inner chamber input gases at high pressure, the misjudgment phenomenon of having avoided the water flood check to cause because of air bag, sand grains, and because of spray splash the work that influences, easily the drawback of electrical equipment accident takes place, thereby test effect is good, the safe reliability height.Simultaneously, this method can directly be utilized the workshop compressed air gas source, needn't external water source, and easy to operate, also save cost.
Embodiment
The invention will be further described below by embodiment.
Embodiment one: step: (a) diesel engine cylinder block is located in anchor clamps and clamped, seal each window, water hole that side surface of workpiece communicates with water channel simultaneously, only have an air intake opening to communicate with pipeline; (b) pressure of being adjusted by pressure regulator valve, tensimeter to the input of workpiece water channel inner chamber by pipeline is the gases at high pressure of 300Kpa; (c) water storage device of back-off inner water tank in the employing outer water tank, the inner water tank top seal, the bottom communicates with outer water tank, cylinder body is placed in the outer water tank of inner water tank top, inwardly water tank cavity top inflation, pressure is 300Kpa, force the water in the inner water tank to enter outer water tank, until flooding cylinder body; (d) have or not bubble in the observation water, judge whether the cylinder body impermeability is qualified; (e) open the vent valve of inner water tank, the outer water tank water surface is fallen after rise, open the cylinder block passage vent valve, and unload lower cylinder body from anchor clamps, check finishes.
Embodiment two: step: (a) diesel engine cylinder cover is located in anchor clamps and clamped, all the other are with example one; (b) pressure of being adjusted by pressure regulator valve, tensimeter to the input of cylinder cap water channel inner chamber by pipeline is the gases at high pressure of 380Kpa; (c) adopt leading screw---drag-cup type elevating mechanism,, cylinder cap is put into reserve tank, flood fully with driven by motor; (d) with example one; (e) cylinder cap is left the water, open cylinder cap water channel vent valve, and unload cylinder cap from anchor clamps, check finishes.
Claims (4)
1, the airtight method of inspection of a kind of diesel engine cylinder block cylinder cap, its operation steps is:
(a) cylinder body or cylinder cap are located in anchor clamps and clamped, seal each window, water hole that side surface of workpiece communicates with water channel simultaneously, only have an air intake opening to communicate with pipeline;
(b) be the gases at high pressure of 300Kpa～400Kpa by pipeline to workpiece water channel inner chamber input pressure;
(c) all flood workpiece in the clear water;
(d) have or not bubble in the observation water, judge whether air tightness of workpiece is qualified;
(e) with workpiece and moisture from, discharging workpiece inner high voltage gas, and from anchor clamps, unload workpiece, check finishes.
2, by the airtight method of inspection of the described diesel engine cylinder block cylinder cap of claim 1, it is characterized in that to comprise tracheae, joint, ball valve, pressure regulator valve, tensimeter in the used pipeline, earlier the gas of high-pressure air source is adjusted to required pressure and import to the workpiece water channel again.
3, by the airtight method of inspection of the described diesel engine cylinder block cylinder cap of claim 1, it is characterized in that described step (c) is to adopt the water storage device of back-off inner water tank in the outer water tank, inwardly water tank cavity top inflation forces the water in the inner water tank to enter outer water tank, up to flooding workpiece.
4, by the airtight method of inspection of the described diesel engine cylinder block cylinder cap of claim 1, it is characterized in that described step (c) is that the anchor clamps of clamping workpiece are slowly put into water by elevating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041916 CN1746647A (en) | 2004-09-09 | 2004-09-09 | Method for testing air tightness of cylinder body and cylinder cover of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041916 CN1746647A (en) | 2004-09-09 | 2004-09-09 | Method for testing air tightness of cylinder body and cylinder cover of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746647A true CN1746647A (en) | 2006-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410041916 Pending CN1746647A (en) | 2004-09-09 | 2004-09-09 | Method for testing air tightness of cylinder body and cylinder cover of diesel engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN1746647A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995319A (en) * | 2010-10-22 | 2011-03-30 | 粱刚 | Airtightness testing machine |
| CN102175398A (en) * | 2011-01-15 | 2011-09-07 | 安徽艾可蓝节能环保科技有限公司 | Pressure measuring platform of purifier |
| CN102435396A (en) * | 2011-09-02 | 2012-05-02 | 上海中船三井造船柴油机有限公司 | Water jacket of cylinder block of diesel engine as well as watertightness detection device and method of water jacket of cylinder block |
| CN101696662B (en) * | 2009-09-08 | 2012-07-11 | 上海明兴开城超音波科技有限公司 | Automobile engine cylinder head with complex shape and device for detecting flaws and leakage of tightness of automobile engine cylinder head with complex shape |
| CN103411739A (en) * | 2013-08-12 | 2013-11-27 | 芜湖永裕汽车工业有限公司 | Engine cylinder cover air flue air tightness detecting method |
| CN103728107A (en) * | 2013-12-31 | 2014-04-16 | 上海集成电路研发中心有限公司 | Device and method for detecting gas leakage of tubular object |
| CN103868659A (en) * | 2013-12-31 | 2014-06-18 | 广西玉柴机器股份有限公司 | Leakage testing method for sealing property of cylinder cover oil atomizer copper bush |
| CN104034486A (en) * | 2014-05-23 | 2014-09-10 | 含山县朝霞铸造有限公司 | Pressure test device for air cylinder |
| CN104089743A (en) * | 2014-07-02 | 2014-10-08 | 天津金海兴业科技有限公司 | Gas escaping detection device |
| CN104655369A (en) * | 2013-08-12 | 2015-05-27 | 芜湖永裕汽车工业有限公司 | Air tightness detection method of engine cylinder head air passage |
| CN104677563A (en) * | 2013-08-12 | 2015-06-03 | 芜湖永裕汽车工业有限公司 | Air tightness detecting method for air passage of engine cylinder head |
-
2004
- 2004-09-09 CN CN 200410041916 patent/CN1746647A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696662B (en) * | 2009-09-08 | 2012-07-11 | 上海明兴开城超音波科技有限公司 | Automobile engine cylinder head with complex shape and device for detecting flaws and leakage of tightness of automobile engine cylinder head with complex shape |
| CN101995319B (en) * | 2010-10-22 | 2012-05-30 | 梁刚 | Airtightness testing machine |
| CN101995319A (en) * | 2010-10-22 | 2011-03-30 | 粱刚 | Airtightness testing machine |
| CN102175398A (en) * | 2011-01-15 | 2011-09-07 | 安徽艾可蓝节能环保科技有限公司 | Pressure measuring platform of purifier |
| CN102435396B (en) * | 2011-09-02 | 2013-12-25 | 上海中船三井造船柴油机有限公司 | Water jacket of cylinder block of diesel engine as well as watertightness detection device and method of water jacket of cylinder block |
| CN102435396A (en) * | 2011-09-02 | 2012-05-02 | 上海中船三井造船柴油机有限公司 | Water jacket of cylinder block of diesel engine as well as watertightness detection device and method of water jacket of cylinder block |
| CN104677563A (en) * | 2013-08-12 | 2015-06-03 | 芜湖永裕汽车工业有限公司 | Air tightness detecting method for air passage of engine cylinder head |
| CN104655369A (en) * | 2013-08-12 | 2015-05-27 | 芜湖永裕汽车工业有限公司 | Air tightness detection method of engine cylinder head air passage |
| CN103411739A (en) * | 2013-08-12 | 2013-11-27 | 芜湖永裕汽车工业有限公司 | Engine cylinder cover air flue air tightness detecting method |
| CN103411739B (en) * | 2013-08-12 | 2015-08-12 | 芜湖永裕汽车工业有限公司 | A kind of engine cylinder cover air flue air-tightness detection method |
| CN104677563B (en) * | 2013-08-12 | 2017-03-01 | 芜湖永裕汽车工业有限公司 | A kind of engine cylinder cover air flue air-tightness detection method |
| CN103728107A (en) * | 2013-12-31 | 2014-04-16 | 上海集成电路研发中心有限公司 | Device and method for detecting gas leakage of tubular object |
| CN103868659A (en) * | 2013-12-31 | 2014-06-18 | 广西玉柴机器股份有限公司 | Leakage testing method for sealing property of cylinder cover oil atomizer copper bush |
| CN103868659B (en) * | 2013-12-31 | 2016-05-25 | 广西玉柴机器股份有限公司 | A kind of cylinder cap fuel injector copper sheathing sealing leak testing process |
| CN104034486A (en) * | 2014-05-23 | 2014-09-10 | 含山县朝霞铸造有限公司 | Pressure test device for air cylinder |
| CN104089743A (en) * | 2014-07-02 | 2014-10-08 | 天津金海兴业科技有限公司 | Gas escaping detection device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |