CN104713686A - Air channel structure of cylinder cover air tightness detector - Google Patents
Air channel structure of cylinder cover air tightness detector Download PDFInfo
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- CN104713686A CN104713686A CN201510158649.0A CN201510158649A CN104713686A CN 104713686 A CN104713686 A CN 104713686A CN 201510158649 A CN201510158649 A CN 201510158649A CN 104713686 A CN104713686 A CN 104713686A
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Abstract
The invention discloses an air channel structure of a cylinder cover air tightness detector. The air channel structure comprises a pneumatic box, a bottom plate and a limiting plate, wherein an air storing tank is arranged in the pneumatic box; a supporting plate is arranged on the pneumatic box; a strip-shaped through groove is formed in the middle of the supporting plate from left to right; slide rails which are symmetric about the strip-shaped through groove used as the center are arranged on the supporting plate; the limiting plate vertical to the supporting plate is arranged at the right end of each slide rail; the bottom plate in slide connection with the slide rails is arranged on the slide plates; the air storing tank outputs compressed air, the compressed air enters an air channel nozzle in the bottom plate and a water channel nozzle in the limiting plate, then pressure is charged into a cylinder cover, and a differential pressure leaking tester is utilized to detect the air tightness. The air channel structure of the cylinder cover air tightness detector can overcome the shortages in cylinder cover air tightness detection of the traditional air channel structure of the cylinder cover air tightness detector; with the adoption of the air channel structure, the work intensity of operators can be reduced; the detection precision can be obviously increased, and the cylinder cover can avoid water or oil corrosion.
Description
Technical field
The invention belongs to air-leakage detector field, be specifically related to cylinder cap air-leakage detector.
Background technology
Cylinder cap is mainly used for closed cylinder top, form firing chamber. and also have the support of air inlet-outlet pipe as camshaft and rocking shaft. mainly air is drawn onto cylinder internal, burning mixture lighted by spark plug, and drive piston acting, waste gas is discharged from gas outlet.The impermeability of cylinder cap is one of key factor affecting product quality, and therefore, air-leakage test is the essential items for inspection in engine cylinder cover production run, the importance of visible air-leakage test in motor car engine production run.And cylinder cap air-leakage detector is mainly when cylinder cap dispatches from the factory, be used for detecting its impermeability.
The traditional detection cylinder cap sealing of cylinder cap air-leakage detector adopts immersion or the visual bubble method of immersion oil, its equipment is simple, visual result, but the personnel of depending merely on use eye observation bubble, judge impermeability, possibly because, operating personnel are tired, the reasons such as other gases mix, not only increase labor intensity of operating staff, precision and efficiency of detecting also can be caused to reduce, automatic ration cannot be realized and leak hunting, also humidity can be brought to get rusty to workpiece, the harmful effects such as impurity immersion and loaded down with trivial details surface of test piece attached water or oily aftertreatment simultaneously.
Summary of the invention
The present invention be directed to the air passage structure of traditional cylinder cap air-leakage detector, when carrying out air-leakage test to cylinder cap, because it adopts immersion or the visual bubble method of immersion oil, cause that operating personnel's working strength is large, accuracy of detection is low, and make the problem that cylinder cap humidity is got rusty; Provide the working strength that can reduce operating personnel, significantly improve accuracy of detection, and make cylinder cap not be subject to the air passage structure of the cylinder cap air-leakage detector of water or oil corrosion.
In order to solve the problems of the technologies described above, the invention provides following technical scheme: the air passage structure of cylinder cap air-leakage detector, comprise Pneumatic controlled box, base plate and limiting plate, gas-holder is provided with in Pneumatic controlled box, Pneumatic controlled box is provided with back up pad, back up pad is provided with bar shaped groove, back up pad is provided with slide rail symmetrical centered by bar shaped groove, one end of slide rail is provided with the limiting plate perpendicular to back up pad, slide rail slidably connects base plate, limiting plate is provided with through hole away from the back up pad of the side of slide rail, limiting plate has water route nozzle on the side of slide rail side, limiting plate is provided with the first rubber cushion near the side of slide rail side, first rubber cushion has the first venthole, water route nozzle communicates with the first venthole, base plate has gas circuit nozzle, base plate is provided with the second rubber cushion, second rubber cushion has the second venthole, gas circuit nozzle communicates with the second venthole, gas-holder is provided with main escape pipe, main escape pipe is branched off into waterway tube and gas circuit pipe away from the other end of gas-holder, waterway tube and gas circuit pipe are respectively equipped with solenoid valve, solenoid valve is respectively equipped with first branch's differential pressure leak test pipe and the 3rd branch's differential pressure leak test pipe near the side of gas-holder on waterway tube He on gas circuit pipe, the opposite side of solenoid valve is respectively equipped with second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe on waterway tube He on gas circuit pipe, differential pressure leak test instrument is connected with between first branch's differential pressure leak test pipe and second branch's differential pressure leak test pipe, differential pressure leak test instrument is connected with between 3rd branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe, waterway tube and gas circuit pipe are each passed through through hole away from one end of second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe and bar shaped groove communicates with water route nozzle and gas circuit nozzle.
Adopt the air passage structure of the cylinder cap air-leakage detector of technical solution of the present invention, comprise Pneumatic controlled box, gas-holder is provided with in Pneumatic controlled box, Pneumatic controlled box is provided with back up pad, stores the pressure gas with certain pressure in gas-holder, for whole system provides source of the gas, when detecting the impermeability of cylinder cap, cylinder cap can be installed on the supporting plate, and back up pad is to support cylinder cap, and detection is better run, back up pad is provided with bar shaped groove, and bar shaped groove can make gas circuit pipe pass through, back up pad is provided with slide rail symmetrical centered by bar shaped groove, and one end of slide rail is provided with the limiting plate perpendicular to back up pad, and the existence of limiting plate, defines the position that base plate slides to right-hand member, limiting plate is provided with through hole away from the back up pad of the side of slide rail, and through hole can make waterway tube pass through, limiting plate has water route nozzle on the side of slide rail side, and when detecting cylinder cap impermeability, water route nozzle can pass into pressurized air in cylinder head water paths, limiting plate is provided with the first rubber cushion near the side of slide rail side, and the first rubber cushion is the contact position in order to good seal water route nozzle and cylinder head water paths mouth, first rubber cushion has one and goes out pore, water route nozzle communicates with the first venthole, slide rail slidably connects base plate, when detecting cylinder cap impermeability, because on fixing cylinder cap position, there are a lot of cylinder and plug, limit base plate upper space, and first cylinder cap is arranged on base plate, need larger activity space, so base plate slides to the direction away from limiting plate, there is the existence of bar shaped chute, the gas circuit pipe be connected with gas circuit nozzle can not be stopped, base plate skids off fixing cylinder cap position, cylinder cap is arranged on base plate, base plate slides near the direction of limiting plate again, slide into cylinder cap and touch limiting plate place, cylinder cap is accurately located and fixes, pressure gas is passed into subsequently in gentle road, cylinder cap water route, carry out air-leakage test, base plate has gas circuit nozzle, gas circuit nozzle can pass into pressurized air in cylinder cap gas channels, base plate is provided with the second rubber cushion, and the second rubber cushion is the contact position in order to seal the gas circuit nozzle on cylinder cap gas channels and base plate, second rubber cushion has the second venthole, gas circuit nozzle communicates with the second venthole, gas-holder is provided with main escape pipe, opens reservoir outlet, and gas-holder can carry out output squeezing gas to main escape pipe, main escape pipe is branched off into waterway tube and gas circuit pipe away from the other end of gas-holder, in the water route that pressurized air can be made to enter cylinder cap respectively and gas circuit, waterway tube and gas circuit pipe are respectively equipped with solenoid valve, the controlled pressurized air processed of solenoid valve enters in waterway tube and gas circuit pipe sequentially, can realize first detecting cylinder cap gas circuit impermeability and whether meet factory calibration, then detect cylinder cap water route impermeability and whether meet factory calibration, solenoid valve is respectively equipped with first branch's differential pressure leak test pipe and the 3rd branch's differential pressure leak test pipe near the side of gas-holder on waterway tube He on gas circuit pipe, the opposite side of solenoid valve is respectively equipped with second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe on waterway tube He on gas circuit pipe, differential pressure leak test instrument is connected with between first branch's differential pressure leak test pipe and second branch's differential pressure leak test pipe, differential pressure leak test instrument is connected with between 3rd branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe, after gas-holder passes into pressurized air balance to cylinder cap gas circuit or water route, shut electromagnetic valve, differential pressure leak test instrument can realize the difference detecting the gaseous tension in cylinder cap and the pressure in gas-holder, judge the impermeability of cylinder cap, waterway tube and gas circuit pipe are each passed through through hole away from the other end of second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe and bar shaped groove communicates with water route nozzle and gas circuit nozzle, achieve gas-holder to water route nozzle and gas circuit nozzle output squeezing gas, the existence of solenoid valve, pressure gas can enter in gentle road, cylinder cap water route respectively.
Beneficial effect of the present invention is: according to the shape of cylinder cap, base plate arranges gas circuit nozzle, water route nozzle is set on limiting plate simultaneously, gas-holder is to waterway tube and the gas transmission of gas circuit pipe, and solenoid control enters the sequencing in cylinder cap gas circuit and water route, and first the solenoid valve on gas circuit pipe is opened, pressurising is carried out to the gas circuit of cylinder cap, after pressure equilibrium, by closed electromagnetic valve, observe the pressure difference value of differential pressure leak test instrument, when the impermeability of cylinder cap gas circuit does not meet standard, whole detector can be reported to the police and shut-down operation, compared with traditional detection instrument, operating personnel are not needed to go to observe foaming, decrease the working strength of operating personnel, and cylinder cap does not need to immerse in water or oil more yet, so cylinder cap can not be subject to the erosion of water or oil, and traditional method, just to detect by an unaided eye bubble by operating personnel, judge whether cylinder cap leaks gas, and the generation of bubble, be likely that other reasons causes, human factor impact is very large, so testing result is inaccurate, and with differential pressure leak test instrument, detect the pressure difference value in cylinder cap and in gas-holder, the same like the weight weighing two objects with a sky chessboard, heavy one end will inevitably be fallen, as long as so had leakage by the gas of pressurize in cylinder cap, pointer on differential pressure leak test instrument will offset, thus judge whether cylinder cap has the situation of leakage, eliminating above factor makes accuracy of detection be significantly improved, and adopt sequencing to detect gas circuit and the water route of cylinder cap, when the gas-path leakage situation detected in the ban does not meet factory calibration, machine would not carry out detecting the water route of cylinder cap again, save source of the gas, thus saved resource.
Further: gas circuit nozzle quantity be four and from left to right equally spaced distribution on the base plate center line, water route nozzle quantity is two, detect cylinder cap impermeability time, four gas circuit nozzles and two water route nozzles, reduce the pressurising time, improve work efficiency.
Further: to be provided with oil-water separator between gas-holder and solenoid valve, oil-water separator is located on main escape pipe, and water can cause damage to a certain degree to cylinder cap, and gas is compressed, and hydrone content raises, and can remove the water in gas through oil-water separator.
Further: base plate is provided with register pin, rubber cushion is provided with circular hole, and register pin is through circular hole, and when base plate is installed cylinder cap, register pin can carry out pre-determined bit to cylinder cap, for location lays the first stone further.
Further: slide rail both sides are provided with symmetrical positioning cylinder, through the pre-determined bit of register pin, it is more accurate that this location makes cylinder cap reach requirement position.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated:
Fig. 1 is the front view of the air passage structure embodiment one of cylinder cap air-leakage detector of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the front view of the air passage structure embodiment two of cylinder cap air-leakage detector of the present invention;
In figure: Pneumatic controlled box 1, gas-holder 2, back up pad 3, slide rail 4, positioning cylinder 5, register pin 6, gas circuit nozzle 7, second rubber cushion 8, base plate 9, first rubber cushion 10, water route nozzle 11, limiting plate 12, differential pressure leak test instrument 13, solenoid valve 14, oil-water separator 15, second venthole 16, first venthole 17, 3rd branch's differential pressure leak test pipe 18, 4th branch's differential pressure leak test pipe 19, gas circuit pipe 20, first branch's differential pressure leak test pipe 21, second branch's differential pressure leak test pipe 22, waterway tube 23, main escape pipe 24, through hole 25, bar shaped groove 26, circular hole 27.
Embodiment
Embodiment one:
As depicted in figs. 1 and 2, the embodiment of the safeguard structure of cylinder cap air-leakage detector of the present invention is: the air passage structure of cylinder cap air-leakage detector, comprise Pneumatic controlled box 1, gas-holder 2 is provided with in Pneumatic controlled box 1, Pneumatic controlled box 1 is provided with back up pad 3, back up pad 3 is provided with bar shaped groove 26, back up pad 3 is provided with slide rail 4 symmetrical centered by bar shaped groove 26, one end of slide rail 4 is provided with the limiting plate 12 perpendicular to back up pad 3, slide rail 4 slidably connects base plate 9, limiting plate 12 is provided with through hole 25 away from the back up pad 3 of slide rail 4 side, limiting plate 12 has water route nozzle 11 on the side of slide rail 4 side, limiting plate 12 is provided with the first rubber cushion 10 near the side of slide rail 4 side, first rubber cushion 10 has the first venthole 17, water route nozzle 11 communicates with the first venthole 17, base plate 9 has gas circuit nozzle 7, base plate 9 is provided with the second rubber cushion 8, second rubber cushion 8 has the second venthole 16, gas circuit nozzle 7 communicates with the second venthole 16, gas-holder 2 is provided with main escape pipe 24, main escape pipe 24 is branched off into waterway tube 23 and gas circuit pipe 20 away from the other end of gas-holder 2, waterway tube 23 and gas circuit pipe 20 are respectively equipped with solenoid valve 14, solenoid valve 14 is respectively equipped with the first branch's differential pressure leak test pipe 21 and the 3rd branch's differential pressure leak test pipe 18 near the side of gas-holder 2 on waterway tube 23 He on gas circuit pipe 20, the opposite side of solenoid valve 14 is respectively equipped with the second branch's differential pressure leak test pipe 22 and the 4th branch's differential pressure leak test pipe 19 on waterway tube 23 He on gas circuit pipe 20, differential pressure leak test instrument 13 is connected with between first branch's differential pressure leak test pipe 21 and second branch's differential pressure leak test pipe 22, differential pressure leak test instrument 13 is connected with between 3rd branch's differential pressure leak test pipe 18 and the 4th branch's differential pressure leak test pipe 19, waterway tube 23 and gas circuit pipe 20 are each passed through through hole 25 away from one end of second branch's differential pressure leak test pipe 22 and the 4th branch's differential pressure leak test pipe 19 and bar shaped groove 26 communicates with water route nozzle 11 and gas circuit nozzle 7, gas circuit nozzle 7 quantity is four and is equally spacedly from left to right distributed on base plate 9 center line, water route nozzle 11 quantity is two, base plate 9 is provided with register pin 6, rubber cushion 8 is provided with circular hole 27, register pin 6 is through circular hole 27, slide rail 4 both sides are provided with symmetrical positioning cylinder 5.
Embodiment two:
As shown in Figure 3, on the basis of embodiment one, be provided with oil-water separator 15 between gas-holder 2 and solenoid valve 14, oil-water separator 15 is located on main escape pipe 24.
In concrete implementation and operation, base plate 9 is slided into the left end of back up pad 3 by slide rail 4, cylinder cap is arranged on base plate 9 by register pin 6 pre-determined bit, again base plate 9 is slided into slide rail 4 right-hand member to limiting plate 12 place, positioning cylinder 5 pairs of cylinder caps are used to locate further, after, cylinder cap is fixed and the hole of cylinder cap is blocked, open gas-holder 2, pressure gas is introduced in oil-water separator 15, by the water contained in pressure gas, be separated and remove, pressure gas enters in gas circuit pipe 20 and waterway tube 23, first open the solenoid valve 14 on gas circuit pipe 20, pressure gas carries out pressurising through 4 gas circuit nozzles, 7 pairs of cylinder caps, after the pressure stability of front and back, shut electromagnetic valve 14, according to the pressure difference value on differential pressure leak test instrument 13, judge cylinder cap gas-path leakage situation, as do not met factory calibration, detector will be reported to the police, and it is out of service, if pressure difference meets standard, solenoid valve 14 on waterway tube 23 will be opened, pressure gas carries out pressurising through the water route of 2 water route nozzles, 11 pairs of cylinder caps, after the pressure stability of front and back, shut electromagnetic valve 14, according to the pressure difference value on differential pressure leak test instrument 13, judge cylinder cap gas-path leakage situation, as do not met factory calibration, detector will be reported to the police, and it is out of service, if pressure difference meets standard, detector can send other sound, and it is out of service.By above operation, operating personnel do not need to observe detector always, detect and just can go out result, reduce the labour intensity of operating personnel; And cylinder cap can not by invasion water or oil, so decrease cylinder cap by oil or water erosion; Because observe bubble method can be subject to external interference, can because human factor makes accuracy of detection reduce, and use differential pressure method to detect the impermeability of cylinder cap, according to sky chessboard principle, even if there is small imbalance at two ends, a heavy side also can to whereabouts, what differential pressure leak test instrument 13 left end detected is the pressure of gas-holder 2, pressure is always constant, gas circuit in the cylinder cap of pressurize that what differential pressure leak test instrument 13 right-hand member detected is or the pressure in water route, even if there is small change, the pointer of differential pressure leak test instrument 13 also can offset, thus by pressure differential detection out, significantly improve accuracy of detection.
For a person skilled in the art, under the prerequisite not departing from structure of the present invention, can also make some distortion and improvement, these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. the air passage structure of cylinder cap air-leakage detector, comprise Pneumatic controlled box, gas-holder is provided with in Pneumatic controlled box, Pneumatic controlled box is provided with back up pad, bar shaped groove is provided with in the middle of back up pad, back up pad is provided with slide rail symmetrical centered by bar shaped groove, one end of slide rail is provided with the limiting plate perpendicular to back up pad, slide rail slidably connects base plate, it is characterized in that: limiting plate is provided with through hole away from the back up pad of the side of slide rail, limiting plate has water route nozzle on the side of slide rail side, limiting plate is provided with the first rubber cushion near the side of slide rail side, first rubber cushion has the first venthole, water route nozzle communicates with the first venthole, base plate has gas circuit nozzle, base plate is provided with the second rubber cushion, second rubber cushion has the second venthole, gas circuit nozzle communicates with the second venthole, gas-holder is provided with main escape pipe, main escape pipe is branched off into waterway tube and gas circuit pipe away from the other end of gas-holder, waterway tube and gas circuit pipe are respectively equipped with solenoid valve, solenoid valve is respectively equipped with first branch's differential pressure leak test pipe and the 3rd branch's differential pressure leak test pipe near the side of gas-holder on waterway tube He on gas circuit pipe, the opposite side of solenoid valve is respectively equipped with second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe on waterway tube He on gas circuit pipe, differential pressure leak test instrument is connected with between first branch's differential pressure leak test pipe and second branch's differential pressure leak test pipe, differential pressure leak test instrument is connected with between 3rd branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe, waterway tube and gas circuit pipe are each passed through through hole away from one end of second branch's differential pressure leak test pipe and the 4th branch's differential pressure leak test pipe and bar shaped groove communicates with water route nozzle and gas circuit nozzle.
2. the air passage structure of cylinder cap air-leakage detector according to claim 1, is characterized in that: gas circuit nozzle quantity be four and from left to right equally spaced distribution on the base plate center line, water route nozzle quantity is two.
3. the air passage structure of cylinder cap air-leakage detector according to claim 2, is characterized in that: be provided with oil-water separator between gas-holder and solenoid valve, and oil-water separator is located on main escape pipe.
4. the air passage structure of cylinder cap air-leakage detector according to claim 3, it is characterized in that: base plate is provided with register pin, rubber cushion is provided with circular hole, and register pin is through circular hole.
5. the air passage structure of cylinder cap air-leakage detector according to claim 4, is characterized in that: slide rail both sides are provided with symmetrical positioning cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158649.0A CN104713686A (en) | 2015-04-07 | 2015-04-07 | Air channel structure of cylinder cover air tightness detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158649.0A CN104713686A (en) | 2015-04-07 | 2015-04-07 | Air channel structure of cylinder cover air tightness detector |
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| CN104713686A true CN104713686A (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510158649.0A Pending CN104713686A (en) | 2015-04-07 | 2015-04-07 | Air channel structure of cylinder cover air tightness detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806970A (en) * | 2017-09-08 | 2018-03-16 | 东莞市德尔能新能源股份有限公司 | A kind of battery seal detection device and detection method |
| CN112353394A (en) * | 2020-11-11 | 2021-02-12 | 深圳市科瑞康实业有限公司 | Pelvic floor muscle pressure detection device and calibration method thereof |
| CN115229502A (en) * | 2022-05-20 | 2022-10-25 | 浙江合达铝业有限公司 | Method for machining cylinder cover of diesel engine |
-
2015
- 2015-04-07 CN CN201510158649.0A patent/CN104713686A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806970A (en) * | 2017-09-08 | 2018-03-16 | 东莞市德尔能新能源股份有限公司 | A kind of battery seal detection device and detection method |
| CN112353394A (en) * | 2020-11-11 | 2021-02-12 | 深圳市科瑞康实业有限公司 | Pelvic floor muscle pressure detection device and calibration method thereof |
| CN112353394B (en) * | 2020-11-11 | 2024-05-17 | 深圳市科瑞康实业有限公司 | Pelvic floor muscle pressure detection device and calibration method thereof |
| CN115229502A (en) * | 2022-05-20 | 2022-10-25 | 浙江合达铝业有限公司 | Method for machining cylinder cover of diesel engine |
| CN115229502B (en) * | 2022-05-20 | 2023-08-04 | 浙江合达铝业有限公司 | Processing method of diesel engine cylinder cover |
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Application publication date: 20150617 |
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