CN205047582U - Leak testing system in compound pneumatic cylinder - Google Patents
Leak testing system in compound pneumatic cylinder Download PDFInfo
- Publication number
- CN205047582U CN205047582U CN201520818742.5U CN201520818742U CN205047582U CN 205047582 U CN205047582 U CN 205047582U CN 201520818742 U CN201520818742 U CN 201520818742U CN 205047582 U CN205047582 U CN 205047582U
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- pneumatic cylinder
- internal leakage
- valve
- servocylinder
- hydraulic cylinder
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Abstract
The utility model discloses a leak testing system in compound pneumatic cylinder. Leak testing system in compound pneumatic cylinder includes tribit four -way reversing valve and two for two switching -over valve including the parts such as valve, stop valve, overflow valve, internally piloting sequence valve, servo -cylinder, displacement sensor, manometer, filter that commutate, switching -over valve. Adopt the filter to filter the impurity in the fluid, get rid of the unfavorable factor of fluid impurity to detecting the pneumatic cylinder internal leakage, adopt the servo -cylinder, through the piston motion of servo -cylinder and the internal leakage of oil extraction volume dual factors detection pneumatic cylinder, adopt the switching -over valve, can detect the internal leakage that the pneumatic cylinder has pole chamber and no pole chamber respectively, further detect the internal leakage of pneumatic cylinder accurately. This leak testing system in compound pneumatic cylinder can detect the internal leakage that the pneumatic cylinder does not have the pole chamber and has the pole chamber with high precision, is of great advantage to the quality of judging the pneumatic cylinder.
Description
Technical field
The utility model relates to Compound hydraulic cylinder internal leakage detection system, it is characterized in that utilizing the piston movement of servocylinder and oil drain quantity dual factors to detect the internal leakage situation of tested cylinder.
Background technique
Oil hydraulic cylinder occupies very important status in hydraulic equipment, in a lot of heavy mechanical equipment and engineering, have general application.The leakage of oil hydraulic cylinder is divided into internal leakage and outward leakage, and wherein internal leakage is the important parameter judging oil hydraulic cylinder quality.It is very common that hydraulic cylinder interior leakage leaks the fault caused, but very hidden, can not be artificial directly observe.Traditional hydraulic cylinder interior leakage leaks detecting method mainly measuring cup method of measurement, but the validity of measuring cup method of measurement is not high, and when internal leakage is little, oil droplet is discontinuity drippage, and the calculating of time has certain measurement error.As can be seen here, the detecting method that hydraulic cylinder interior leakage leaks haves much room for improvement.
Summary of the invention
In order to the internal leakage of oil hydraulic cylinder can be detected more accurately, the utility model provides a kind of oil liquid pressure adopting relief valve to control tested cylinder, utilize internal control sequence valve to control the oil liquid pressure of servocylinder, utilize the piston movement of servocylinder to detect the detection system of the internal leakage of oil hydraulic cylinder.For achieving the above object, the technological scheme of employing is the utility model:
Compound hydraulic cylinder internal leakage detection system, comprises selector valve, stop valve, relief valve, internal control sequence valve, servocylinder and displacement transducer etc.Selector valve is the path for changing fluid conveying, stop valve stops fluid to enter this path, relief valve is the oil liquid pressure for determining to enter tested cylinder, internal control sequence valve is the motion for controlling servocylinder according to circuit pressure, and displacement transducer is the displacement of the piston movement for recording servocylinder.Above-mentioned Compound hydraulic cylinder internal leakage detection system adopts class symmetrical structure, can detect the internal leakage of tested cylinder rod chamber and rodless cavity respectively.The utility model has two indices can determine the internal leakage of tested cylinder, and one is the fluid amount that servocylinder is discharged, and two is displacement and time of servocylinder piston movement.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
In figure, each label is expressed as follows: 1 oil hydraulic pump; 2 motors; 3 filters; 4 three position four-way directional control valves; 5 relief valves; 6 2/2-way selector valves; 7 stop valves; 8 servocylinders; 9 pressure gauges; 10 internal control sequence valves; 11 tested liquid cylinder pressures; 12 displacement transducers.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
See Fig. 1, Compound hydraulic cylinder internal leakage detection system, comprises the structures such as selector valve, stop valve, relief valve, internal control sequence valve and servocylinder.First, open No. 7-3 and 7-4 stop valve, stop fluid to enter tested cylinder; Close No. 7-1, No. 7-2, No. 7-5 and 7-6 stop valve, No. 6-1 and 6-2 2/2-way selector valve are all got to left position, No. 4 three position four-way directional control valves also get to left position, starting electrical machinery, two paths of fluid are respectively: one is fluid through No. 1 oil hydraulic pump, No. 3 filters, No. 4 three position four-way directional control valves, 5-1 relief valve, No. 7-1 and 7-2 stop valve, 10-1 internal control sequence valve, 8-1 servocylinder, 6-1 2/2-way selector valve, gets back to fuel tank; Another is fluid through No. 1 oil hydraulic pump, No. 3 filters, 6-2 2/2-way selector valve, 8-2 servocylinder, 10-2 internal control sequence valve, No. 7-5 and 7-6 stop valve, 5-2 relief valve, finally gets back to fuel tank.Record related data, this process is the internal leakage in order to prevent the internal leakage of other elements from having influence on tested cylinder.
Detect the internal leakage of tested cylinder rodless cavity: open No. 7-2 and 7-6 stop valve, close other several stop valves, No. 4 three position four-way directional control valves are got to left position, 6-2 2/2-way selector valve is got to right position, fluid enters the rodless cavity of tested cylinder through 5-1 relief valve, the internal leakage of tested cylinder rodless cavity is detected by the piston movement of 8-2 servocylinder, by the displacement of 12-2 displacement transducer recording and analyses bar, use stopwatch writing time, and record the oil drain quantity of 8-2 servocylinder, then utilize Computer Analysis related data.9-3 pressure gauge is used for observing the pressure of oil hydraulic cylinder rod chamber, and 9-4 pressure gauge can measure the pressure of servocylinder rodless cavity.
Detect the internal leakage of tested cylinder rod chamber: open No. 7-1 and 7-5 stop valve, close other stop valves, fluid flows to the rod chamber of tested cylinder through 5-2 relief valve, the internal leakage of tested cylinder rod chamber is detected by the piston movement of 8-1 servocylinder, by the displacement of 12-1 displacement transducer recording and analyses bar motion, use stopwatch writing time, and record the oil drain quantity of 8-1 servocylinder, then utilize Computer Analysis process related data.9-2 pressure gauge is for measuring the pressure of oil hydraulic cylinder rodless cavity, and 9-1 pressure gauge is for detecting the pressure of servocylinder rod chamber.
Claims (4)
1. Compound hydraulic cylinder internal leakage detection system, is characterized in that: have relief valve, and the oil liquid pressure entering oil hydraulic cylinder rodless cavity determined by 5-1 relief valve, and 5-2 relief valve controls the oil liquid pressure entering oil hydraulic cylinder rod chamber; There is internal control sequence valve, the pressure of 10-1 internal control sequence valve control 8-1 servocylinder rod chamber, the pressure of 10-2 internal control sequence valve control 8-2 servocylinder rodless cavity; There is servocylinder, detect the internal leakage situation of oil hydraulic cylinder respectively by the piston movement of No. 8-1 and 8-2 servocylinder and oil drain quantity dual factors.
2. Compound hydraulic cylinder internal leakage detection system according to claim 1, is characterized in that: adopt No. 5-1 to control with 5-2 relief valve the pressure that fluid enters oil hydraulic cylinder rodless cavity and rod chamber respectively.
3. Compound hydraulic cylinder internal leakage detection system according to claim 1, is characterized in that: the pressure adopting 10-1 internal control sequence valve control 8-1 servocylinder rod chamber; Adopt the pressure of 10-2 internal control sequence valve control 8-2 servocylinder rodless cavity.
4. Compound hydraulic cylinder internal leakage detection system according to claim 1, is characterized in that: adopt No. 8-1 to detect the internal leakage of oil hydraulic cylinder rod chamber and rodless cavity respectively with 8-2 servocylinder, its detection factors has piston movement and the oil drain quantity of servocylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818742.5U CN205047582U (en) | 2015-10-22 | 2015-10-22 | Leak testing system in compound pneumatic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818742.5U CN205047582U (en) | 2015-10-22 | 2015-10-22 | Leak testing system in compound pneumatic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047582U true CN205047582U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520818742.5U Expired - Fee Related CN205047582U (en) | 2015-10-22 | 2015-10-22 | Leak testing system in compound pneumatic cylinder |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526210A (en) * | 2016-01-13 | 2016-04-27 | 中南大学 | Method and device for measuring micro inner leakage amount of any stroke position of hydraulic cylinder |
| CN106979190A (en) * | 2017-05-22 | 2017-07-25 | 武汉科技大学 | The experimental provision and method of a kind of low-frictional force hydraulic cylinder performance detection |
| CN108240371A (en) * | 2017-12-29 | 2018-07-03 | 苏州梅克卡斯汽车科技有限公司 | A kind of oil cylinder Oil Leakage Detecting method and detection device |
| CN109356910A (en) * | 2018-09-13 | 2019-02-19 | 上海宝钢工业技术服务有限公司 | The test macro and method of position internal leakage in hydraulic cylinder |
| CN110296126A (en) * | 2019-07-12 | 2019-10-01 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having detection hydraulic oil |
| CN114483712A (en) * | 2022-02-04 | 2022-05-13 | 浙江大学 | Hydraulic cylinder micro-internal leakage detection test bed and detection method thereof |
-
2015
- 2015-10-22 CN CN201520818742.5U patent/CN205047582U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526210A (en) * | 2016-01-13 | 2016-04-27 | 中南大学 | Method and device for measuring micro inner leakage amount of any stroke position of hydraulic cylinder |
| CN105526210B (en) * | 2016-01-13 | 2017-09-19 | 中南大学 | A kind of small internal leakage measuring method in hydraulic cylinder arbitrary distance of run position and its device |
| CN106979190A (en) * | 2017-05-22 | 2017-07-25 | 武汉科技大学 | The experimental provision and method of a kind of low-frictional force hydraulic cylinder performance detection |
| CN106979190B (en) * | 2017-05-22 | 2018-08-28 | 武汉科技大学 | A kind of experimental provision and method of low-frictional force hydraulic cylinder performance detection |
| CN108240371A (en) * | 2017-12-29 | 2018-07-03 | 苏州梅克卡斯汽车科技有限公司 | A kind of oil cylinder Oil Leakage Detecting method and detection device |
| CN108240371B (en) * | 2017-12-29 | 2023-09-05 | 苏州梅克卡斯汽车科技有限公司 | Oil cylinder oil leakage detection method and detection device |
| CN109356910A (en) * | 2018-09-13 | 2019-02-19 | 上海宝钢工业技术服务有限公司 | The test macro and method of position internal leakage in hydraulic cylinder |
| CN110296126A (en) * | 2019-07-12 | 2019-10-01 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having detection hydraulic oil |
| CN114483712A (en) * | 2022-02-04 | 2022-05-13 | 浙江大学 | Hydraulic cylinder micro-internal leakage detection test bed and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20161022 |