CN205280291U - Measurement device for small leakage quantity that lets out of hydraulic component - Google Patents
Measurement device for small leakage quantity that lets out of hydraulic component Download PDFInfo
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- CN205280291U CN205280291U CN201521067639.8U CN201521067639U CN205280291U CN 205280291 U CN205280291 U CN 205280291U CN 201521067639 U CN201521067639 U CN 201521067639U CN 205280291 U CN205280291 U CN 205280291U
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- pressure valve
- high pressure
- fluid
- low pressure
- way cock
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Abstract
The utility model provides a measurement device for small leakage quantity that lets out of hydraulic component, includes: three way connection, a high pressure valve, the 2nd high pressure valve, low pressure valve, fluid pressure line, take the measuring graduate: three way connection's A end is connected with the low pressure oil pocket oil -out by the test piece, and three way connection's B end is connected with the test bench through a high pressure valve, three way connection's C end and the 2nd high pressure valve's access connection, and the 2nd high pressure valve's export is connected with taking the measuring graduate through the fluid pressure line, is close to the vertical low pressure valve of upwards installing of the 2nd high pressure valve department on the fluid pressure line. It is unrestricted that the device makes the hydraulic component hydraulic fluid port connect the orientation, need not wait for for a long time that the inside fluid of remaining has flowed, need not pressurize for a long time messenger's leakage fluid and is full of the inner chamber, can measure in succession and let out leakage quantity, the error is little. The device compact structure is reasonable, convenient to use is swift, and measured data is accurate, satisfies the test standard requirement.
Description
Technical field
This utility model belongs to testing experiment apparatus field, relates to leakage amount measuring device for electricity during a kind of Hydraulic Elements internal leakage test, particularly relates to the measurement apparatus of a kind of Hydraulic Elements micro leakage.
Background technology
At present, domestic relevant enterprise, when carrying out Hydraulic Elements internal leakage test and measuring leakage rate, is generally adopted measuring cup and measures, especially when leakage rate is only small. but adopt measuring cup to measure, this method has the disadvantage that: during first internal leakage test, Hydraulic Elements are put restricted, namely Hydraulic Elements port connection can not be put as when normally using, and port connection can only be put towards level and direction below horizontal, so could catch fluid with measuring cup. because when Hydraulic Elements port connection direction above towards level, the fluid leaked out will flow down along joint outer surface, cannot collecting with measuring cup, such to put requirement different with putting possibility time actually used, and also limit Hydraulic Elements installation position on testing stand, it two is after in test, the fluid that leaks out needs integrated some drop-wise drippage, could being collected into row measurement with measuring cup, owing to this gets blamed continuous way but discontinuous, but leakage is continuous print, during meter, the selection of node varies with each individual, and error of measured data can be made bigger. additionally, may be used without detecting device measurement, as, " the Hydraulic Elements internal leakage detecting device of a kind of wide-range " patent of invention that patent No. ZL201110445668.3 records, involved is the change in displacement adopting magnetostriction principle to measure liquid level float, and be transferred to signal processor and displacement signal is processed, calculate the method obtaining leakage flow signal. but no matter adopt measuring cup to measure, or adopt " the Hydraulic Elements leakage amount detector of a kind of wide-range " measurement, all suffer from the problem that test period is longer, because starting after pressurization carries out internal leakage test, leak into the fluid of low pressure oil pocket from high-voltage oil cavity to first have to when flowing to oil-out adhere to low pressure oil intracavity portion, on hydraulic fluid port and inner nosepiece wall, until being stained with completely, the fluid being further continued for leaking out afterwards flows out and forms oil droplet, could collect with measuring cup or utilize " the Hydraulic Elements leak detecting device of a kind of wide-range " measurement, so needing pressurization during test for a long time. especially leak test starts to be accomplished by waiting the longer time with residual fluid in front Hydraulic Elements internal low-voltage oil pocket, hydraulic fluid port and inner nosepiece wall. because these fluid are not leak tests start after the fluid that just leaks, so leak test measurement can not be started at once, need to wait that oil residues liquid stream goes out, confirm that the residual fluid of the inwall of Hydraulic Elements internal low-voltage oil pocket, hydraulic fluid port and joint flows completely out before leak test starts, the leakage fluid measured is not the residual fluid of Hydraulic Elements joint hydraulic fluid port vias inner walls, it is real leakage rate, pressurization could be started after this and carry out internal leakage test. therefore, it is completely necessary for developing a kind of measurement apparatus that can put, without waiting for for a long time, can accurately measure again micro leakage by the normal direction used.
Utility model content
The purpose of this utility model is in that to provide a kind of compact conformation reasonable, convenient to use, meets the measurement apparatus of the Hydraulic Elements micro leakage that test standard requires.
The technical solution of the utility model is: the measurement apparatus of a kind of Hydraulic Elements micro leakage, including: three way cock, first high pressure valve, second high pressure valve, low pressure valve, fluid pressure line, measuring cup with a scale: the A end of three way cock is connected with by the low pressure oil pocket oil-out of test specimen, the B end of three way cock is connected with testing stand by the first high pressure valve, the C end of three way cock and the import of the second high pressure valve connect, the outlet of the second high pressure valve is connected with measuring cup with a scale by fluid pressure line, fluid pressure line installs low pressure valve straight up close to the second high pressure valve place.
This utility model can also adopt another kind of connected mode: the A end of three way cock is connected with by the low pressure oil pocket oil-out of test specimen, the C end of three way cock is connected with testing stand by the first high pressure valve, the B end of three way cock and the import of the second high pressure valve connect, the outlet of the second high pressure valve is connected with measuring cup with a scale by fluid pressure line, installs low pressure valve straight up close to the second high pressure valve place on fluid pressure line.
Have the benefit effect that 1. these devices make Hydraulic Elements port connection towards unrestricted produced by after this utility model employing technique scheme; 2. this device need not wait as long for that internal residual fluid stream is complete, need not pressurize for a long time makes leakage fluid be full of inner chamber; 3. the continuable measurement leakage rate of this device, error is little. This apparatus structure compact and reasonable, convenient to use, measurement data is accurate, meets test standard requirement.
Accompanying drawing explanation
Fig. 1 is the first structural representation of the measurement apparatus of a kind of Hydraulic Elements micro leakage of this utility model.
Fig. 2 is the another kind of structural representation of the measurement apparatus of this utility model a kind of Hydraulic Elements micro leakage.
Detailed description of the invention
The first structural representation is as it is shown in figure 1, the measurement apparatus of a kind of Hydraulic Elements micro leakage, including three way cock's the 1, first high pressure valve the 2, second high pressure valve 3, low pressure valve 4, fluid pressure line 5, measuring cup with a scale 6. The A end of three way cock 1 is connected with by the low pressure oil pocket oil-out P2 of test specimen D, the B end of three way cock 1 is connected with testing stand by the first high pressure valve 2, the C end of three way cock 1 and the import of the second high pressure valve 3 connect, the outlet of the second high pressure valve 3 is connected with measuring cup 6 with a scale by fluid pressure line 5, installs low pressure valve 4 straight up close to the second high pressure valve 3 place on fluid pressure line 5.
Another kind of structural representation is as shown in Figure 2, the A end of three way cock 1 is connected with by the low pressure oil pocket oil-out P2 of test specimen D, the C end of three way cock 1 is connected with testing stand by the first high pressure valve 2, the B end of three way cock 1 and the import of the second high pressure valve 3 connect, the outlet of the second high pressure valve 3 is connected with measuring cup 6 with a scale by fluid pressure line 5, installs low pressure valve 4 straight up close to the second high pressure valve 3 place on fluid pressure line 5.
During work, open the first high pressure valve 2, close the second high pressure valve 3, firing test platform, utilize the oil supply system of testing stand to make to be full of fluid by the low pressure oil pocket oil-out P2 of test specimen D; Then slowly open the second high pressure valve 3, make fluid pass through the second high pressure valve 3 and enter fluid pressure line 5, measuring cup with a scale 6;
Discharging the gas in fluid by regulating low pressure valve 4 and control the liquid level of measuring cup 6 with a scale simultaneously, after measuring cup 6 liquid level with a scale reaches required position, closing the first high pressure valve 2 and low pressure valve 4, the second high pressure valve 3 stays open; After being pressurizeed by the high-voltage oil cavity oil inlet P 1 of test specimen D, proceed by internal leakage test, the now liquid level of record paper measuring graduate; The liquid level of record paper measuring graduate again during off-test, twice, front and back liquid level difference is the leakage rate of this test.
Claims (1)
1. a measurement apparatus for Hydraulic Elements micro leakage, including: three way cock (1), the first high pressure valve (2), the second high pressure valve (3), low pressure valve (4), fluid pressure line (5), measuring cup with a scale (6); It is characterized in that: the A end of three way cock (1) is connected with by low pressure oil pocket oil-out (P2) of test specimen (D), the B end of three way cock (1) is connected with testing stand by the first high pressure valve (2), the C end of three way cock (1) and the import of the second high pressure valve (3) connect, the outlet of the second high pressure valve (3) is (6) connected with measuring cup with a scale by fluid pressure line (5), installs low pressure valve (4) straight up close to the second high pressure valve (3) place on fluid pressure line (5); Or, the A end of three way cock (1) is connected with by low pressure oil pocket oil-out (P2) of test specimen (D), the C end of three way cock (1) is connected with testing stand by the first high pressure valve (2), the B end of three way cock (1) and the import of the second high pressure valve (3) connect, the outlet of the second high pressure valve (3) is connected with measuring cup with a scale (6) by fluid pressure line (5), installs low pressure valve (4) straight up close to the second high pressure valve (3) place on fluid pressure line (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067639.8U CN205280291U (en) | 2015-12-21 | 2015-12-21 | Measurement device for small leakage quantity that lets out of hydraulic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067639.8U CN205280291U (en) | 2015-12-21 | 2015-12-21 | Measurement device for small leakage quantity that lets out of hydraulic component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205280291U true CN205280291U (en) | 2016-06-01 |
Family
ID=56064857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521067639.8U Withdrawn - After Issue CN205280291U (en) | 2015-12-21 | 2015-12-21 | Measurement device for small leakage quantity that lets out of hydraulic component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205280291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444959A (en) * | 2015-12-21 | 2016-03-30 | 洛阳西苑车辆与动力检验所有限公司 | Hydraulic element tiny leakage rate measuring device and measuring method thereof |
| CN111811754A (en) * | 2020-06-28 | 2020-10-23 | 福建福清核电有限公司 | Air chamber tightness testing process for pneumatic piston type regulating valve |
-
2015
- 2015-12-21 CN CN201521067639.8U patent/CN205280291U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444959A (en) * | 2015-12-21 | 2016-03-30 | 洛阳西苑车辆与动力检验所有限公司 | Hydraulic element tiny leakage rate measuring device and measuring method thereof |
| CN105444959B (en) * | 2015-12-21 | 2017-11-03 | 洛阳西苑车辆与动力检验所有限公司 | A kind of measurement apparatus and its measuring method of Hydraulic Elements micro leakage |
| CN111811754A (en) * | 2020-06-28 | 2020-10-23 | 福建福清核电有限公司 | Air chamber tightness testing process for pneumatic piston type regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20171103 |