CN203114786U - Leakage measuring system - Google Patents
Leakage measuring system Download PDFInfo
- Publication number
- CN203114786U CN203114786U CN 201220739920 CN201220739920U CN203114786U CN 203114786 U CN203114786 U CN 203114786U CN 201220739920 CN201220739920 CN 201220739920 CN 201220739920 U CN201220739920 U CN 201220739920U CN 203114786 U CN203114786 U CN 203114786U
- Authority
- CN
- China
- Prior art keywords
- double
- main cartridge
- microprocessor
- displacement sensor
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a leakage measuring system, belongs to the technical field of a hydraulic system, and comprises a main cartridge valve (1), a pilot reversing control valve (2), a double-acting double-piston rod oil cylinder (3), a high-precision displacement sensor (4), a microprocessor (5) and a display (6), wherein the inlet opening of the main cartridge valve (1) is communicated with the inlet opening of the pilot reversing control valve (2); the return opening of the pilot reversing control valve (2) is connected with an oil tank; the left and right ends of the main cartridge valve (1) are respectively connected with the left and right cavities of the double-acting double-piston rod oil cylinder (3); the high-precision displacement sensor (4) is arranged on the double-acting double-piston rod oil cylinder (3); the signal end of the high-precision displacement sensor (4) is connected with the signal input end of the microprocessor (5); and the output end of the microprocessor (5) is connected with the input end of the display (6). The system is high in measurement precision, wide in measurement range and simple and convenient in measurement.
Description
Technical field
The utility model relates to a kind of measuring system, specifically is a kind of leakage measuring instrumentation system.
Background technique
Leakage problem is still one of persistent ailment of hydraulic system, needs us to pay close attention to.The leakage of hydraulic system is having a strong impact on the Security of system works, causes the wasting of resources, environmental pollution, increase dead time, reduces productivity, increases problems such as cost of production.
Internal leakage is one of key index of judging the hydraulic element performance, and it has reflected manufacturing precision and the degree of wear of hydraulic element.Yet the internal leakage test of hydraulic element is a difficult problem always, and is main because the leakage rate of different hydraulic element is widely different, changes to thousands of milliliters (big flow electrohydraulic control) from several milliliters of per minutes (one-way valve leakage rate).The detecting method of traditional internal leakage mainly contains pressurize method, measuring cup method of measurement, flowmeter survey method etc.The pressurize method is connected tested hydraulic element exactly with hydraulic oil source, boost in pressure to testing specified value, is seen this pressure situation over time then, but this method can only reflect qualitatively that hydraulic element have or not internal leakage; The measuring cup method is to measure the internal leakage of hydraulic element with measuring cup, and this method measuring accuracy is not high, when leakage rate hour is difficult to measure; The flowmeter survey method generally adopts micro flowmeter, but its effective span is very limited, therefore, is difficult to satisfy the demand of leakage rate variation so on a large scale, influences testing precision.When leakage rate is big, damage micro flowmeter again easily.
Summary of the invention
At the problem that above-mentioned prior art exists, the utility model provides a kind of leakage measuring instrumentation system, can accurately measure hydraulic system and arrive large-scale leakage rate among a small circle.
To achieve these goals, the technical solution adopted in the utility model is: a kind of leakage measuring instrumentation system comprises main cartridge valve, guide's reversing control valve, double-action double rod cylinder, high accuracy displacement sensor, microprocessor and display device; The filler opening of main cartridge valve is connected with the filler opening of guide's reversing control valve, the return opening of guide's reversing control valve links to each other with fuel tank, the two ends, the left and right sides of main cartridge valve link to each other with two chambeies about the double-action double rod cylinder respectively, high accuracy displacement sensor is installed on the double-action double rod cylinder, the signal end of high accuracy displacement sensor links to each other with the signal input part of microprocessor, and the output terminal of microprocessor links to each other with the display device input end.
The left and right sides end valve core area of main cartridge valve is than being 2:1.
Compare with existing system, the utility model is by the combination of double-action double rod cylinder, high accuracy displacement sensor, microprocessor, can accurately calculate tested element and arrive large-scale leakage rate among a small circle, the utilization of main cartridge valve has guaranteed excellent sealing performance, has guaranteed the seal of system.
Description of drawings
Fig. 1 is the utility model hydraulic schematic diagram.
Among the figure: 1, main cartridge valve, 2, guide's reversing control valve, 3, the double-action double rod cylinder, 4, high accuracy displacement sensor, 5, microprocessor, 6, display device.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of leakage measuring instrumentation system comprises main cartridge valve 1, guide's reversing control valve 2, double-action double rod cylinder 3, high accuracy displacement sensor 4, microprocessor 5 and display device 6; The filler opening of main cartridge valve 1 is connected with the filler opening of guide's reversing control valve 2, the return opening of guide's reversing control valve 2 links to each other with fuel tank, the two ends, the left and right sides of main cartridge valve 1 link to each other with two chambeies about double-action double rod cylinder 3 respectively, high accuracy displacement sensor 4 is installed on the double-action double rod cylinder 3, the signal end of high accuracy displacement sensor 4 links to each other with the signal input part of microprocessor 5, and the output terminal of microprocessor 5 links to each other with display device 6 input ends.
During test: the oil outlet that at first filler opening of tested element is connected in main cartridge valve 1, guide's reversing control valve 2 is in right position, the pressure oil of fuel tank enters the right chamber of tested element and double-action double rod cylinder 3 by main cartridge valve 1, the piston of double-action double rod cylinder 3 is pushed to high order end under the pressure oil effect, the fluid in double-action double rod cylinder 3 left chambeies is by damping hole, guide's reversing control valve 2 right bit stream oil sump tanks of main cartridge valve 1, make tested element reach the test pressure value of expectation simultaneously, this moment, detected element began to have leakage to produce; Then with the extremely left position of guide's reversing control valve 2 commutations, pressure oil one branch road enters the left chamber of spool left end and the double-action double rod cylinder 3 of main cartridge valve 1 by the position, a left side of guide's reversing control valve 2, another branch road acts on the spool right-hand member of main cartridge valve 1, the left and right sides end valve core area ratio of main cartridge valve 1 can be 2:1,1.5:1,1.2:1, but when the left and right area ratio is 2:1, make main cartridge valve 1 be in closed condition, keep best sealability.Double-action double rod cylinder about 3 two chambeies link to each other with the left end of main cartridge valve 1, the filler opening of tested element respectively, when tested element has the generation of leakage, the pressure oil in double-action double rod cylinder 3 left chambeies promotes piston rod toward moving right, and replenishes the leakage rate of detected element by the movement of piston rod.High accuracy displacement sensor 4 is sent to microprocessor 5 with the displacement signal of double-action double rod cylinder 3 piston rods simultaneously, microprocessor 5 is when handling double-action double rod cylinder 3 piston rod displacement signals, its clock module is determined the time that this displacement is used, microprocessor 5 calculates the leakage rate of tested element by program then, and sends display device 6 to and show.In tested element leakage rate hour, a fixing relatively long test time is selected in test, so that measuring accuracy is higher; When leakage rate is big, uses whole effective travels of double-action double rod cylinder 3 to carry out leak-testing, and calculate leakage rate after recording the used time.
Claims (2)
1. a leakage measuring instrumentation system is characterized in that, comprises main cartridge valve (1), guide's reversing control valve (2), double-action double rod cylinder (3), high accuracy displacement sensor (4), microprocessor (5) and display device (6); The filler opening of main cartridge valve (1) is connected with the filler opening of guide's reversing control valve (2), the return opening of guide's reversing control valve (2) links to each other with fuel tank, the two ends, the left and right sides of main cartridge valve (1) link to each other with two chambeies about double-action double rod cylinder (3) respectively, high accuracy displacement sensor (4) is installed on the double-action double rod cylinder (3), the signal end of high accuracy displacement sensor (4) links to each other with the signal input part of microprocessor (5), and the output terminal of microprocessor (5) links to each other with display device (6) input end.
2. a kind of leakage measuring instrumentation according to claim 1 system is characterized in that the left and right sides end valve core area of main cartridge valve (1) is than being 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220739920 CN203114786U (en) | 2012-12-27 | 2012-12-27 | Leakage measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220739920 CN203114786U (en) | 2012-12-27 | 2012-12-27 | Leakage measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114786U true CN203114786U (en) | 2013-08-07 |
Family
ID=48895136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220739920 Expired - Lifetime CN203114786U (en) | 2012-12-27 | 2012-12-27 | Leakage measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114786U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047224A (en) * | 2012-12-27 | 2013-04-17 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measurement system |
| CN103671360A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Oil cylinder auxiliary detection device |
| CN105545876A (en) * | 2015-12-01 | 2016-05-04 | 广东精铟海洋工程股份有限公司 | Field detection device for reversing valve |
| CN108386417A (en) * | 2018-02-08 | 2018-08-10 | 宁波德昂纳机械有限公司 | A kind of multistation testing stand and its detection method |
| CN108691852A (en) * | 2017-04-04 | 2018-10-23 | 上海梅山钢铁股份有限公司 | Slighter compress block calibration system and scaling method |
| CN108692892A (en) * | 2018-06-28 | 2018-10-23 | 芜湖泰和管业股份有限公司 | A kind of device for detecting airtightness of corrugated tube and detection method |
| CN110748531A (en) * | 2019-10-12 | 2020-02-04 | 王勐 | Device for testing liquid leakage amount |
-
2012
- 2012-12-27 CN CN 201220739920 patent/CN203114786U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047224A (en) * | 2012-12-27 | 2013-04-17 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measurement system |
| CN103047224B (en) * | 2012-12-27 | 2016-03-02 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | A kind of leakage measuring instrumentation system |
| CN103671360A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Oil cylinder auxiliary detection device |
| CN105545876A (en) * | 2015-12-01 | 2016-05-04 | 广东精铟海洋工程股份有限公司 | Field detection device for reversing valve |
| CN108691852A (en) * | 2017-04-04 | 2018-10-23 | 上海梅山钢铁股份有限公司 | Slighter compress block calibration system and scaling method |
| CN108386417A (en) * | 2018-02-08 | 2018-08-10 | 宁波德昂纳机械有限公司 | A kind of multistation testing stand and its detection method |
| CN108386417B (en) * | 2018-02-08 | 2023-12-29 | 宁波德昂纳机械有限公司 | Multi-station test bed and detection method thereof |
| CN108692892A (en) * | 2018-06-28 | 2018-10-23 | 芜湖泰和管业股份有限公司 | A kind of device for detecting airtightness of corrugated tube and detection method |
| CN110748531A (en) * | 2019-10-12 | 2020-02-04 | 王勐 | Device for testing liquid leakage amount |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203114786U (en) | Leakage measuring system | |
| CN103047224B (en) | A kind of leakage measuring instrumentation system | |
| CN203643006U (en) | Standard colloid flow meter device | |
| CN202109938U (en) | Wide range flow measuring device | |
| CN203321939U (en) | Hydraulic cylinder internal leakage composite detection system | |
| CN102865271A (en) | Detection method and device of internal leakage of hydraulic valve | |
| CN101608939B (en) | High-temperature high-pressure visual micro-flow measuring instrument and measuring method | |
| CN108361138A (en) | High-pressure common-rail pipe flow-limiting valve diagnosis detecting method and device | |
| CN205047582U (en) | Leak testing system in compound pneumatic cylinder | |
| CN100439895C (en) | Oil elastic modulus detector based on volume elastic modulus definition | |
| CN109368583A (en) | Urea for vehicle charging machine and its use control method | |
| CN104236817A (en) | Dynamic sealing performance testing method and device for plunger cylinder sleeve | |
| CN201945348U (en) | Device using small caliber flow meter to measure flow of large caliber pipeline | |
| CN103791951B (en) | Malleation calibrating gas effusion meter and malleation calibrating gas flow-measuring method | |
| CN105298988A (en) | Hydraulic cylinder internal leakage testing device and method | |
| CN2901296Y (en) | Oil-liquid elasticity modulus detector based on volume elasticity modules definition | |
| CN104074840B (en) | Digital valve pilot system | |
| CN205780047U (en) | A kind of hydraulic cylinder sealing detection device | |
| CN102493973B (en) | Wide-range internal leakage detection device for hydraulic component | |
| CN202066544U (en) | Fuel consumption detector for diesel engines | |
| CN104034396A (en) | Wide-range piston-type gas flow standard device | |
| CN104074841A (en) | Digital valve testing system | |
| CN2521591Y (en) | Linear volume flow meter | |
| CN205154810U (en) | Pneumatic cylinder internal leakage testing arrangement | |
| CN204082776U (en) | Digital valve pilot system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130807 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |