CN201396339Y - Oil contamination-monitoring system for hydraulic system - Google Patents
Oil contamination-monitoring system for hydraulic system Download PDFInfo
- Publication number
- CN201396339Y CN201396339Y CN2009200328222U CN200920032822U CN201396339Y CN 201396339 Y CN201396339 Y CN 201396339Y CN 2009200328222 U CN2009200328222 U CN 2009200328222U CN 200920032822 U CN200920032822 U CN 200920032822U CN 201396339 Y CN201396339 Y CN 201396339Y
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- hydraulic system
- filter
- selector valve
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Abstract
An oil contamination-monitoring system for a hydraulic system comprises a relief valve, a reversing valve, flow sensors, a pressure meter, a filter, a micro-controller and a spillover valve; the neutral position of the reversing valve is provided with an oil inlet, a return oil inlet and two oil outlets; the oil contamination-monitoring system also comprises an oil inlet port and an oil outlet port, the oil inlet port is connected with the main oil path of the monitored hydraulic system, and the oil outlet port is connected with the oil tank of the main oil path of the monitored hydraulic system; the relief valve behind the oil inlet port is connected with the oil inlet of the neutral position of the reversing valve; the two oil outlets of the neutral position of the reversing valve are respectively connected with the inlet and outlet of the filter; both ends of the filter are respectively connected in series with a flow sensor; the output ends of the flow sensors are respectively connected with the ports of the micro-controller; a spillover valve is connected with the path connecting the reversing valve with the inlet of the filter, the pressure meter is mounted at the oil inlet of the spillover valve, and the oil discharge outlet is connected with the oil tank of the main oil path. The utility model can monitor the degree of oil contamination on line in the process of the operation of the hydraulic system.
Description
Technical field
The utility model relates to a kind of device for monitoring oil contamination, particularly a kind of system that is used for hydraulic system on-line monitoring oil contamination.
Background technique
In modern hydraulic equipment, the pollution of fluid control is extremely important.At present, many factory and enterprises or unit in charge of construction do not carry out contamination monitoring to the employed fluid of hydraulic equipment, this makes contaminated fluid have a strong impact on the usability and the life-span of each hydraulic element in the system, and the fault that causes because of oil contamination accounts for more than 75% of hydraulic equipment total failare according to statistics.Therefore, it is very necessary oil contamination is monitored and controlled to equipment with the dustiness of oil.But existing monitoring oil contamination method and technology still have following some shortcomings: most monitoring devices all belong to off-line monitoring, its equipment complexity, the cost height, strict to monitoring of environmental, monitoring periods is long, can not accomplish real time on-line monitoring, as microscope monitoring technology, automatic particle collector monitoring technology and spectral analysis technique etc.And the portable monitoring oil contamination instrument that has in the market owing to still there is the interference of personal factor, still can't be realized the on-line monitoring of oil contamination.
Therefore, at existing monitoring oil contamination equipment complexity, the cost height, the loaded down with trivial details deficiency that waits of determining method, study a kind of on-line monitor for pollution in hydraulic system oil liquid, the dustiness of hydraulic equipment fluid is monitored, to the control oil contamination, improve hydraulic element working life, carry out the intelligent diagnostics of hydraulic equipment fault, very important meaning is arranged.
Summary of the invention
The purpose of this utility model provides a kind of oil pollution monitoring device of hydraulic system, this device can on-line monitoring the pollution level of fluid, overcome deficiencies such as existing device for monitoring oil contamination equipment complexity, cost height and determining method be loaded down with trivial details.
To achieve these goals, a kind of oil pollution monitoring device of hydraulic system that the utility model provides comprises and transfers reduction valve, selector valve, flow transducer, pressure gauge, filter, microcontroller and relief valve; Wherein, the meta of selector valve is provided with filler opening, return opening and two oil outlets; Also comprise oil-feed port that is connected with the working connection of monitored hydraulic system and the fuel-displaced port that is connected with the working connection fuel tank of monitored hydraulic system; Reduction valve behind the oil-feed port is connected with the filler opening of the meta of selector valve; Two oil outlets of the meta of this selector valve are connected with outlet with the import of filter respectively; Each series connection of the two ends of filter is provided with a flow transducer; The output terminal of this flow transducer is connected with the interface of described microcontroller respectively; Be connected a relief valve on the access path of selector valve and filter inlet, the oiler of this relief valve is equipped with pressure gauge, and its oil drain out is connected with the working connection fuel tank.
Further, described flow transducer is an electromagnetic flow transducer.
Further, described microcontroller comprises display modular, load module, output module and data transmission module.
Further, described selector valve is a 3-position 4-way M type solenoid directional control valve.
Further, described series flow control valve, reduction valve, flow transducer and selector valve are in series and are installed on the integrated package.
As seen from the above, the utility model is embedded in the hydraulic system, can be in the working procedure of hydraulic system on-line monitoring go out the pollution level of fluid, use microprocessor to the oil liquid pressure signal gather, storage and signal processing, and realize functions such as demonstration, storage, printing and wireless transmission; And main hydraulic is installed on the integrated package, has optimized structure, convenient on-the-spot installation and volume are little.
Description of drawings
Fig. 1 is a working principle schematic representation of the present utility model.
Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.
Embodiment
As shown in Figure 1, device of the present utility model comprises reduction valve 1, selector valve 2, flow transducer 3, pressure gauge 4, filter 5, microcontroller (MCU) 6, relief valve 8, monitored oil circuit fuel tank 9 and oil-feed port A and fuel-displaced port B.In the present embodiment, selector valve 4 adopts the low voltage electromagnetic selector valve, as 3-position 4-way M type solenoid directional control valve; Reduction valve 1 is a level pressure output reduction valve.
The oil-feed port A of device of the present utility model is connected with the working connection that connects monitored hydraulic system, along the oil-feed direction, reduction valve 1 is connected in series with the filler opening of the meta of selector valve 2, two oil outlets of the meta of selector valve 2, and one of them is connected with the import of filter 5; Another outlet with filter 5 is connected; Be connected a relief valve 8 on the access path between selector valve 2 and filter 5 imports, at the oiler place of relief valve 8 pressure gauge 4 be installed, its oil drain out is connected with the working connection fuel tank, and the two ends of filter 5 respectively are provided with a flow transducer 3; That is, two oil outlets of the meta of selector valve 2, one of them is connected with an oiler with the relief valve 8 of filter 5 entrance points, and another oil outlet end with the flow transducer 3 of filter 5 outlet end is connected; The return opening of the meta of selector valve 2 is the fuel-displaced port B of device of the present utility model, connects with the working connection fuel tank 9 of monitored hydraulic system.
The output terminal of flow transducer 3 is connected with AD1 with the interface AD0 of microcontroller 6 respectively.Microcontroller 6 has display modular, load module, output module and data transmission module, can realize functions such as LCD, keyboard operation, printout and wireless data transmission.
Below working method of the present utility model is further described:
During monitoring, at first the oil-feed port A with device of the present utility model is connected on the working connection of monitored hydraulic system, and the fuel-displaced port B of device of the present utility model is connected on the oil circuit of monitored hydraulic system; Give device energising of the present utility model then, the pressure that reduction valve 1 reduces the device fluid of the present utility model of flowing through is adjusted in the 1DT energising of low voltage electromagnetic selector valve 2, makes pressure reduce to suitable scope; Adjust the pressure that relief valve 8 is used for stablizing the hydraulic oil that passes through filter 5 again, stablize to guarantee the pressure reduction of monitoring the filter membrane front and back, the big I of pressure is by pressure gauge 4 demonstrations; Then, set the sampling period, at this moment the fluid filter 5 of flowing through, fluid is by the filter membrane in the filter 5 time, after being intercepted by filter membrane or deposit greater than the contamination particle of filter membrane mesh in the filter 5, under certain pressure, it is many more to deposit, the fluid flow that flows through filter membrane is more little, can monitor the fluid flow of inflow filter 5 and outflow filter 5 by flow transducer 3, two flux signals that flow transducer 3 monitors are transferred to the microprocessing unit of microcontroller 6, microprocessing unit to signal processing after, can calculate the flow difference of filter membrane front end and back end, and rely on the exclusive data interpretation software can set up the corresponding relation of contamination level of oil liquid and flow difference, thus the dustiness value of fluid can be learnt, and this result is presented on the liquid crystal display.
In observation process, if stopping up, the filter membrane of filter 5 cause flow to reduce, when surpassing setting value, device of the present utility model will send warning automatically, the 2DT of low voltage electromagnetic selector valve 2 energising simultaneously, the commutation of control fluid, realization is to the back flush of filter filter membrane, reach washing time after, the 2DT outage of low voltage electromagnetic selector valve 2, the 1DT energising repeats above-mentioned test process this moment.In addition, load module by microcontroller 5, as keyboard etc. can make amendment to data such as sampling period, back flush times, operation such as storage, and as required the data of storage are carried out wireless or wire transmission, so that further to carrying out data analysis by data transmission module.
Device of the present utility model compared with prior art has the following advantages:
1. can in the course of work of hydraulic system, go out the pollution level of fluid by on-line monitoring, and realize aobvious Show, the function such as storage, printing and wireless transmission;
2. use microprocessor to the oil liquid pressure signal gather, storage and signal process, and works as oil contamination When transfiniting, can provide alarm signal, take place with the prevention major accident;
3. can by the time of 3-position 4-way solenoid directional control valve control monitoring and back flush filter membrane, guarantee prison Surveying device can work;
4. main hydraulic is installed on the integrated package, has optimized structure, convenient on-the-spot the installation and body Long-pending little.
Claims (5)
1, a kind of oil pollution monitoring device of hydraulic system comprises and transfers reduction valve (1), selector valve (2), flow transducer (3), pressure gauge (4), filter (5), microcontroller (6) and relief valve (8); Wherein, the meta of described selector valve (2) is provided with filler opening, return opening and two oil outlets;
It is characterized in that:
Also comprise oil-feed port (A) that is connected with the working connection of monitored hydraulic system and the fuel-displaced port (B) that is connected with the working connection fuel tank (9) of monitored hydraulic system;
Described reduction valve (1) behind the described oil-feed port (A) is connected with the filler opening of the meta of described selector valve (2); Two oil outlets of the meta of described selector valve (2) are connected with outlet with the import of described filter (5) respectively; Each series connection of the two ends of described filter (5) is provided with a flow transducer (3); The output terminal of described flow transducer (3) is connected with the interface of described microcontroller (6) respectively; Be connected a relief valve (8) on the access path of described selector valve (2) and described filter (5) import, the oiler of described relief valve (8) is equipped with pressure gauge (4), and its oil drain out is connected with working connection fuel tank (9).
2, oil pollution monitoring device of hydraulic system according to claim 1 is characterized in that: described flow transducer (3) is an electromagnetic flow transducer.
3, oil pollution monitoring device of hydraulic system according to claim 1 is characterized in that: described microcontroller (5) comprises display modular, load module, output module and data transmission module.
4, oil pollution monitoring device of hydraulic system according to claim 1 is characterized in that: described selector valve (4) is a 3-position 4-way M type solenoid directional control valve.
5, oil pollution monitoring device of hydraulic system according to claim 1 is characterized in that: described series flow control valve (1), reduction valve (2), flow transducer (3) and selector valve (4) are in series and are installed on the integrated package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200328222U CN201396339Y (en) | 2009-04-28 | 2009-04-28 | Oil contamination-monitoring system for hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200328222U CN201396339Y (en) | 2009-04-28 | 2009-04-28 | Oil contamination-monitoring system for hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396339Y true CN201396339Y (en) | 2010-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200328222U Expired - Lifetime CN201396339Y (en) | 2009-04-28 | 2009-04-28 | Oil contamination-monitoring system for hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396339Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793892A (en) * | 2010-03-08 | 2010-08-04 | 中国航空工业集团公司西安飞机设计研究所 | On-line detection method of oil contamination in hydraulic system |
| CN101865179A (en) * | 2010-04-23 | 2010-10-20 | 大连海事大学 | Failure analyzing and monitoring system and method for hydraulic system of mechanical equipment |
| CN101539565B (en) * | 2009-04-28 | 2012-07-04 | 西安建筑科技大学 | Oil pollution monitoring device of hydraulic system |
| CN102691698A (en) * | 2012-06-20 | 2012-09-26 | 苏州世力源科技有限公司 | Method for preventing hydraulic impact table oil source from raising temperature |
| CN103307057A (en) * | 2013-06-25 | 2013-09-18 | 北京航空航天大学 | Pollution and abrasion test system for electro-hydraulic servo valve |
| CN103452959A (en) * | 2013-09-07 | 2013-12-18 | 淮南国力液压装备有限公司 | Online comprehensive detection system for oil |
| CN103711749A (en) * | 2012-09-29 | 2014-04-09 | 成都瑞勃投资有限公司 | Integrated hydraulic oil testing system |
| CN105805085A (en) * | 2014-12-29 | 2016-07-27 | 徐工集团工程机械股份有限公司 | Hydraulic oil online monitoring device and engineering machinery |
| CN107218263A (en) * | 2017-08-04 | 2017-09-29 | 刘泽奎 | A kind of electrohydraulic servo proportional commutation flow speed control valve |
| CN107387500A (en) * | 2017-08-29 | 2017-11-24 | 温州大学 | For detecting the detecting system of particulate contaminants in fluid |
| CN109882473A (en) * | 2019-03-19 | 2019-06-14 | 首钢集团有限公司 | A kind of hydraulic system pollution balance control method |
| CN113638941A (en) * | 2021-07-20 | 2021-11-12 | 中国煤炭科工集团太原研究院有限公司 | Anti-pollution automatic oil supplementing and changing device and method for hydraulic oil tank |
-
2009
- 2009-04-28 CN CN2009200328222U patent/CN201396339Y/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539565B (en) * | 2009-04-28 | 2012-07-04 | 西安建筑科技大学 | Oil pollution monitoring device of hydraulic system |
| CN101793892A (en) * | 2010-03-08 | 2010-08-04 | 中国航空工业集团公司西安飞机设计研究所 | On-line detection method of oil contamination in hydraulic system |
| CN101865179A (en) * | 2010-04-23 | 2010-10-20 | 大连海事大学 | Failure analyzing and monitoring system and method for hydraulic system of mechanical equipment |
| CN102691698B (en) * | 2012-06-20 | 2015-07-15 | 苏州世力源科技有限公司 | Method for preventing hydraulic impact table oil source from raising temperature |
| CN102691698A (en) * | 2012-06-20 | 2012-09-26 | 苏州世力源科技有限公司 | Method for preventing hydraulic impact table oil source from raising temperature |
| CN103711749A (en) * | 2012-09-29 | 2014-04-09 | 成都瑞勃投资有限公司 | Integrated hydraulic oil testing system |
| CN103307057A (en) * | 2013-06-25 | 2013-09-18 | 北京航空航天大学 | Pollution and abrasion test system for electro-hydraulic servo valve |
| CN103452959B (en) * | 2013-09-07 | 2015-12-02 | 淮南国力液压装备有限公司 | The online comprehensive detection system of a kind of fluid |
| CN103452959A (en) * | 2013-09-07 | 2013-12-18 | 淮南国力液压装备有限公司 | Online comprehensive detection system for oil |
| CN105805085A (en) * | 2014-12-29 | 2016-07-27 | 徐工集团工程机械股份有限公司 | Hydraulic oil online monitoring device and engineering machinery |
| CN105805085B (en) * | 2014-12-29 | 2018-07-17 | 徐工集团工程机械股份有限公司 | Hydraulic pressure online oil monitoring device and engineering machinery |
| CN107218263A (en) * | 2017-08-04 | 2017-09-29 | 刘泽奎 | A kind of electrohydraulic servo proportional commutation flow speed control valve |
| CN107218263B (en) * | 2017-08-04 | 2018-12-14 | 江苏高特阀业有限公司 | A kind of electrohydraulic servo proportional commutation speed governing valve |
| CN107387500A (en) * | 2017-08-29 | 2017-11-24 | 温州大学 | For detecting the detecting system of particulate contaminants in fluid |
| CN109882473A (en) * | 2019-03-19 | 2019-06-14 | 首钢集团有限公司 | A kind of hydraulic system pollution balance control method |
| CN109882473B (en) * | 2019-03-19 | 2020-06-19 | 首钢集团有限公司 | Pollution balance control method for hydraulic system |
| CN113638941A (en) * | 2021-07-20 | 2021-11-12 | 中国煤炭科工集团太原研究院有限公司 | Anti-pollution automatic oil supplementing and changing device and method for hydraulic oil tank |
| CN113638941B (en) * | 2021-07-20 | 2023-08-11 | 中国煤炭科工集团太原研究院有限公司 | Anti-pollution automatic oil supplementing and changing device and method for hydraulic oil tank |
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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 |
Granted publication date: 20100203 Effective date of abandoning: 20090428 |