CN103307057B - Pollution and abrasion test system for electro-hydraulic servo valve - Google Patents
Pollution and abrasion test system for electro-hydraulic servo valve Download PDFInfo
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- CN103307057B CN103307057B CN201310256169.9A CN201310256169A CN103307057B CN 103307057 B CN103307057 B CN 103307057B CN 201310256169 A CN201310256169 A CN 201310256169A CN 103307057 B CN103307057 B CN 103307057B
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Abstract
A pollution and abrasion test system for an electro-hydraulic servo valve comprises four parts: a power source, an oil pollution degree control part, an electro-hydraulic servo valve mounting table and a system oil pollution degree detection part, wherein the power source part provides source power for the whole test system, the oil pollution degree control part is directly connected at the back of the power source part of the system, and controls the working oil pollution degree in test, the electro-hydraulic servo valve mounting table part is connected between a pollution level control part and the system oil pollution degree detection part, the system oil pollution degree detection part is connected with a return circuit of the system, that is between the electro-hydraulic servo valve mounting table and a system oil tank. The system is used for carrying out pollution and abrasion test on the electro-hydraulic servo valve, avoiding test error caused by particles pollution, the pollution degree of the test system is stabled in the pollution degree condition required by the test, the real-time monitoring to the pollution degree is achieved, the real-time adjustment is realized, and the test system is high in reliability, stable to operate, and easy to operate.
Description
Technical field
The present invention relates to a kind of electrohydraulic control contamination wear pilot system, be specifically related to the pilot system that a kind of electrohydraulic control work contamination level of oil liquid is variable, controlled.This pilot system can ensure that electrohydraulic control carries out contamination wear test under different contamination level of oil liquid grade.Native system smooth running, is easy to control.Belonging to technical field of hydraulic pressure, is a kind of hydraulic test system.
Background technique
At present, pollute the testing apparatus of design for hydrovalve, the external world all adopted adds the test method of standard A C experiment scheme design or MTD experiment scheme design.Such as JB/T7857-2006 (hydrovalve contaminant sensitivity assessment method), the test loop of the hydrovalve contaminant sensitivity provided is exactly the test loop of the method design by additional MTD experiment scheme design; Authorize publication number to be the Chinese utility model patent application of CN2179483Y, devise a kind of pollution susceptibility testing device for hydraulic valve with two covers test pipelines, but this device is also according to the patten's design of additional contamination particle.
And electrohydraulic control is when reality uses, the pollutant in fluid is mainly derived from, in electrohydraulic control work system, and electrohydraulic control self and other hydraulic element, the burr produced in running, chip etc.And hydraulic system can produce a large amount of pollutants in the course of the work, such as oil hydraulic pump is exactly one of pollution sources.The test method of outer boundary applying AC experiment scheme design or MTD experiment scheme design deposits problem both ways: first, the prerequisite of carrying out the contamination wear test of hydraulic element needs pilot system itself not produce pollutant and interference test result, under the condition that this point is carried out continuously in test requirements document, be difficult at present ensure; Secondly, the size of the pollutant that electrohydraulic control is run in actual use and hardness are complicated and changeable, and only replace the pollutant in actual use to test with the contamination particle of single hardness, test result and actual conditions have certain deviation.
Therefore, being directed to the pollutant feature of bearing in the actual use of electrohydraulic control is necessary to design the research of electrohydraulic control contamination wear pilot system.The present invention is exactly the electrohydraulic control contamination wear pilot system developed on this basis.Pollutant in pilot system is mainly, the particulate matter that system element produces in running.When using this pilot system to carry out contamination wear test, by oil in parallel in regulating system filter, the class of pollution of working solution can be controlled.This kind of pilot system is used to reflect more accurately, the influence degree that the size of the particulate pollutant in fluid that works in the actual use of electrohydraulic control and concentration are worn and torn to it.
Summary of the invention
The object of this invention is to provide a kind of electrohydraulic control contamination wear pilot system, by this pilot system, contamination wear test is carried out to electrohydraulic control, can reflect more accurately, electrohydraulic control works the influence degree that the dustiness of contamination particle weares and teares to it in fluid in actual use.This system has and operates steadily, the feature that dustiness is controlled.
A kind of electrohydraulic control contamination wear of the present invention pilot system, is made up of four parts:
First portion is the power source of this pilot system, is whole pilot system providing source power; Second portion is contamination level of oil liquid control section, is connected directly between after system dynamic source, by a road only the pipeline of belt switch and five routing switch and oil filter the pipeline be composed in series and composes in parallel, be the fluid pollutional equivalent amount part that works in testing; Part III is electrohydraulic control mounting platform part, is connected between class of pollution control section and Part IV system contamination level of oil liquid detecting portion, is electrohydraulic control mounting platform part; Part IV is system contamination level of oil liquid detecting portion, is connected on the oil circuit of system, is namely connected between electrohydraulic control mounting platform and system fuel tank.
Wherein, first portion's pilot system power source, this part composition situation is as follows:
1) thermometer 1, selects ordinary temperature meter, is installed together with fuel tank 2, be used for measuring system work time fluid temperature;
2) fuel tank 2, this fuel tank 2 is designed to bottom for triangle, and the form of stirrer is installed on top, in order to the proof test uniformity of pollutant mixing in work fluid;
3) relief valve 3, is conventional relief valve, is installed in parallel with conventional plunger pump 4, and anti-locking system is because of pressure or fluid flow is excessive causes damage to system element and performance;
4) plunger pump 4, selects the conventional plunger pump of the required flow of test according to the flow of test electrohydraulic control 17.Plunger pump 4 filler opening is connected with fuel tank 2, and oil outlet connects one-way valve 6, and be the dynamical element of whole hydraulic system, the mechanical energy exported by oil hydraulic motor 5 is the pressure energy of fluid;
5) oil hydraulic motor 5, selects the conventional hydraulic motor of satisfied test demand according to the specification of test electrohydraulic control 17.Oil hydraulic motor 5 is connected with plunger pump 4, for plunger pump 4 provides prime kinetic energy;
6) one-way valve 6 is conventional one-way valve, is arranged on the in parallel with relief valve 3 of plunger pump 4 below, prevents fluid from flowing backwards and causes damage to plunger pump 4;
7) accumulator 7, needs according to test the bladder accumulator selecting different size, is arranged on after relief valve 3 and plunger pump 4 shunt circuit, is reduce the pressure pulsation in system circuit;
8) pressure gauge 8, selects normal pressures table, is arranged on after accumulator 7, plays the effect detected system pressure;
Wherein, second portion, contamination level of oil liquid control section, this part composition situation is as follows:
1) switch 9 is the switch of conventional adjustable switch aperture, before the oil filter being arranged on each parallel connection, by regulating the opening and closing of switch in oily filter system 10 before each oil filter, controls the service condition of the oil filter of different filter precision;
2) oily filter system 10, filters (10-1,10-2,10-3,10-4,10-5) by the oil that five filter precisioies are different and is connected in parallel composition, is used for the dustiness of fluid in control system loop;
Wherein, Part III, electrohydraulic control mounting platform part, this part composition situation is as follows:
1) pinboard 16, according to the model testing the electrohydraulic control 17 selected, selects the pinboard of different flow, after being arranged on oil filter system 10 in parallel, plays fixing electrohydraulic control and the effect providing required flow for electrohydraulic control;
2) pressure gauge 12 and 13, is connected with two load ports of electrohydraulic control 17 respectively, is used for measuring tested electrohydraulic control 17 load pressure at two ends;
3) switch 14 and flowmeter 15, be connected with two load ports of test electrohydraulic control 17, is used for sensing lead flow;
Wherein, Part IV, contamination level of oil liquid detecting portion, part composition situation is as follows:
1) flowmeter 19, conventional turbine flowmeter, is connected in series with the oil circuit 18 of online dustiness monitor 22, for measuring the fluid flow flowing through on-line computing model;
2) switch 20 is the ordinary tap of adjustable opening, carrys out the fluid flow of control flow check through online dustiness monitor 22 by the aperture of by-pass cock;
3) oil cooling machine 23, according to the heating value of pilot system, selects the water-cooling type oil cold that heat dissipating capacity degree is different.The main oil circuit 24 of the system that is arranged on, one end connects the outlet of one-way valve 21 and online dustiness monitor 22 shunt circuit, and the other end is connected with fuel tank 2, is to reduce system oil temperature;
4) one-way valve 21 is conventional one-way valve, is connected in parallel with online dustiness monitor 22, in order to increase pressure to oil circuit, and oil return can be diverted in the oil circuit 18 of online dustiness monitor 22.
5) online dustiness monitor 22, for the instrument of conventional hydraulic oil contamination level of oil liquid on-line monitoring, be connected in parallel with the oil circuit installing one-way valve 21, by the Real-Time Monitoring of online dustiness monitor 22 pairs of system contamination level of oil liquid, instruct the service condition that the oil of the different filter precisioies of second portion parallel connection is filtered, thus make the dustiness of system fluid meet test requirements document.
A kind of electrohydraulic control contamination wear of the present invention pilot system, its advantage is: use this system to carry out contamination wear test to electrohydraulic control, avoid the extraneous test error applying particulate pollutant and bring, and by the oil circuit of different oily Lv Yu mono-tunnel of adjustment five road filter precision only belt switch, again in conjunction with dustiness on-line computing model, the dustiness of pilot system can be made to be stabilized in dustiness condition needed for test, to reach the real-time monitoring to dustiness, the effect of adjustment in real time.It is high that this pilot system has reliability, operates steadily, and is easy to the features such as operation.
Accompanying drawing explanation
Fig. 1 electrohydraulic control contamination wear of the present invention pilot system pie graph
Fig. 2 electrohydraulic control contamination wear of the present invention test system architecture figure
In Fig. 2, sequence number is described as follows:
1, thermometer, 2, fuel tank, 3, relief valve, 4, plunger pump, 5, oil hydraulic motor, 6, one-way valve, 7, accumulator, 8, pressure gauge, 9, switch, 10, oily filter system (10-1,10-2,10-3,10-4,10-5 represent the different oil filter of filter precision respectively), 11, pressure gauge, 12, pressure gauge, 13, pressure gauge, 14, switch, 15, flowmeter, 16, pinboard, 17, electrohydraulic control, 18, oil circuit, 19, flowmeter, 20, switch, 21, one-way valve, 22, online dustiness monitor, 23, oil cooling machine, 24, main oil circuit
Specific implementation method
Below in conjunction with accompanying drawing, the present invention is described in detail:
Technological scheme provided by the invention is:
See shown in Fig. 1,2, a kind of electrohydraulic control contamination wear of the present invention pilot system, this system specifically forms and comprises:
First portion is the power source of this pilot system, is whole pilot system providing source power; Second portion is contamination level of oil liquid control section, is connected directly between after system dynamic source, by a road only the pipeline of belt switch and five routing switch and oil filter the pipeline be composed in series and composes in parallel, be the fluid pollutional equivalent amount part that works in testing; Part III is electrohydraulic control mounting platform part, is connected between class of pollution control section and Part IV system contamination level of oil liquid detecting portion, is electrohydraulic control mounting platform part; Part IV is system contamination level of oil liquid detecting portion, is connected on the oil circuit of system, is namely connected between electrohydraulic control mounting platform and system fuel tank.
Wherein, first portion is pilot system power source, and this part composition situation is as follows:
1) thermometer 1, selects ordinary temperature meter, is installed together with fuel tank 2, be used for measuring system work time fluid temperature;
2) fuel tank 2, fuel tank 2 is designed to bottom for triangle, and the form of stirrer is installed on top, in order to the proof test uniformity of pollutant mixing in work fluid;
3) relief valve 3, is conventional relief valve, is installed in parallel with conventional plunger pump 4, and anti-locking system is because of pressure or fluid flow is excessive causes damage to system element and performance;
4) plunger pump 4, selects the conventional plunger pump of the required flow of test according to the flow of test electrohydraulic control 17.Plunger pump 4 filler opening is connected with fuel tank 2, and oil outlet connects one-way valve 6, and be the dynamical element of whole hydraulic system, the mechanical energy exported by oil hydraulic motor 5 is the pressure energy of fluid;
5) oil hydraulic motor 5, selects the conventional hydraulic motor of satisfied test demand according to the specification of test electrohydraulic control 17.Oil hydraulic motor 5 is connected with plunger pump 4, for plunger pump 4 provides prime kinetic energy;
6) one-way valve 6 is conventional one-way valve, is arranged on the in parallel with relief valve 3 of plunger pump 4 below, prevents fluid from flowing backwards and causes damage to plunger pump 4;
7) accumulator 7, needs according to test the bladder accumulator selecting different size, is arranged on after relief valve 3 and plunger pump 4 shunt circuit, is reduce the pressure pulsation in system circuit;
8) pressure gauge 8, selects normal pressures table, is arranged on after accumulator 7, plays the effect detected system pressure;
Wherein, second portion is contamination level of oil liquid control section, and this part composition situation is as follows:
1) switch 9 is the switch of conventional adjustable switch aperture, before the oil filter being arranged on each parallel connection, by regulating the opening and closing of switch in oily filter system 10 before each oil filter, controls the service condition of the oil filter of different filter precision;
2) oily filter system 10, filters (10-1,10-2,10-3,10-4,10-5) by the oil that five filter precisioies are different and is connected in parallel composition, is used for the dustiness of fluid in control system loop;
Wherein, Part III is electrohydraulic control mounting platform part, and this part composition situation is as follows:
1) pinboard 16, according to the model testing the electrohydraulic control 17 selected, selects the pinboard of different flow, after being arranged on oil filter system 10 in parallel, plays fixing electrohydraulic control and the effect providing required flow for electrohydraulic control;
2) pressure gauge 12 and 13, is connected with two load ports of electrohydraulic control 17 respectively, is used for measuring tested electrohydraulic control 17 load pressure at two ends;
3) switch 14 and flowmeter 15, be connected with two load ports of test electrohydraulic control 17, is used for sensing lead flow;
Wherein, Part IV is contamination level of oil liquid detecting portion, and part composition situation is as follows:
1) flowmeter 19, conventional turbine flowmeter, is connected in series with the oil circuit 18 of online dustiness monitor 22, for measuring the fluid flow flowing through on-line computing model;
2) switch 20 is the ordinary tap of adjustable opening, carrys out the fluid flow of control flow check through online dustiness monitor 22 by the aperture of by-pass cock;
3) oil cooling machine 23, according to the heating value of pilot system, selects the water-cooling type oil cold that heat dissipating capacity degree is different.The main oil circuit 24 of the system that is arranged on, one end connects the outlet of one-way valve 21 and online dustiness monitor 22 shunt circuit, and the other end is connected with fuel tank 2, is to reduce system oil temperature;
4) one-way valve 21 is conventional one-way valve, is connected in parallel with online dustiness monitor 22, in order to increase pressure to oil circuit, and oil return can be diverted in the oil circuit 18 of online dustiness monitor 22.
5) online dustiness monitor 22, for the instrument of conventional hydraulic oil contamination level of oil liquid on-line monitoring, be connected in parallel with the oil circuit installing one-way valve 21, by the Real-Time Monitoring of online dustiness monitor 22 pairs of system contamination level of oil liquid, instruct the service condition that the oil of the different filter precisioies of second portion parallel connection is filtered, thus make the dustiness of system fluid meet test requirements document.
Claims (1)
1. an electrohydraulic control contamination wear pilot system, is characterized in that: it is made up of four parts:
First portion is the power source of this pilot system, is whole pilot system providing source power; Second portion is contamination level of oil liquid control section, is connected directly between after system dynamic source, by a road only the pipeline of belt switch and five routing switch and oil filter the pipeline be composed in series and composes in parallel, be the fluid pollutional equivalent amount part that works in testing; Part III is electrohydraulic control mounting platform part, is connected between class of pollution control section and Part IV system contamination level of oil liquid detecting portion, is electrohydraulic control mounting platform part; Part IV is system contamination level of oil liquid detecting portion, is connected on the oil circuit of system, is namely connected between electrohydraulic control mounting platform and system fuel tank;
Wherein, first portion is pilot system power source, and this part composition situation is as follows:
1) thermometer (1), selects ordinary temperature meter, is installed together with fuel tank (2), be used for measuring system work time fluid temperature;
2) fuel tank (2), this fuel tank (2) is designed to bottom for triangle, and the form of stirrer is installed on top, in order to the proof test uniformity of pollutant mixing in work fluid;
3) relief valve (3), is conventional relief valve, is installed in parallel with conventional plunger pump (4), and anti-locking system is because of pressure or fluid flow is excessive causes damage to system element and performance;
4) plunger pump (4), selects the conventional plunger pump of the required flow of test according to the flow of test electrohydraulic control (17); Plunger pump (4) filler opening is connected with fuel tank (2), and oil outlet connects one-way valve (6), and being the dynamical element of whole hydraulic system, is the pressure energy of fluid by the mechanical energy that oil hydraulic motor (5) exports;
5) oil hydraulic motor (5), selects the conventional hydraulic motor of satisfied test demand according to the specification of test electrohydraulic control (17); Oil hydraulic motor (5) is connected with plunger pump (4), for plunger pump (4) provides prime kinetic energy;
6) one-way valve (6), is conventional one-way valve, is arranged on the in parallel with relief valve (3) of plunger pump (4) below, prevents fluid from flowing backwards and causes damage to plunger pump (4);
7) accumulator (7), needs according to test the bladder accumulator selecting different size, is arranged on after relief valve (3) and plunger pump (4) shunt circuit, is reduce the pressure pulsation in system circuit;
8) the first pressure gauge (8), selects normal pressures table, is arranged on after accumulator (7), plays the effect detected system pressure;
Wherein, second portion is contamination level of oil liquid control section, and this part composition situation is as follows:
1) switch (9), for the switch of conventional adjustable switch aperture, before the oil filter being arranged on each parallel connection, by regulating the opening and closing of switch in oily filter system (10) before each oil filter, control the service condition of the oil filter of different filter precision;
2) oily filter system (10), filters (10-1,10-2,10-3,10-4,10-5) by the oil that five filter precisioies are different and is connected in parallel composition, is used for the dustiness of fluid in control system loop;
Wherein, Part III is electrohydraulic control mounting platform part, and this part composition situation is as follows:
1) pinboard (16), according to the model testing the electrohydraulic control (17) selected, select the pinboard of different flow, after being arranged on oil filter system (10) in parallel, play fixing electrohydraulic control and the effect that required flow is provided for electrohydraulic control;
2) the second pressure gauge (12) and the 3rd pressure gauge (13), be connected with two load ports of electrohydraulic control (17) respectively, be used for measuring tested electrohydraulic control (17) load pressure at two ends;
3) switch (14) and flowmeter (15), is connected with two load ports of test electrohydraulic control (17), is used for sensing lead flow;
Wherein, Part IV is contamination level of oil liquid detecting portion, and this part composition situation is as follows:
1) flowmeter (19), conventional turbine flowmeter, is connected in series with the oil circuit (18) of online dustiness monitor (22), for measuring the fluid flow flowing through online dustiness monitor (22);
2) switch (20) is the ordinary tap of adjustable opening, carrys out the fluid flow of control flow check through online dustiness monitor (22) by the aperture of by-pass cock;
3) oil cooling machine (23), according to the heating value of pilot system, select the water-cooling type oil cold that heat dissipating capacity degree is different, the main oil circuit of the system that is arranged on (24), one end connects the outlet of one-way valve (21) and online dustiness monitor (22) shunt circuit, the other end is connected with fuel tank (2), for reducing system oil temperature;
4) one-way valve (21), for conventional one-way valve, being connected in parallel with online dustiness monitor (22), in order to increase pressure to oil circuit, and making oil return can be diverted in the oil circuit (18) of online dustiness monitor (22);
5) online dustiness monitor (22), for the online dustiness monitor of conventional hydraulic oil contamination level of oil liquid, be connected in parallel with the oil circuit installing one-way valve (21), by online dustiness monitor (22) to the Real-Time Monitoring of system contamination level of oil liquid, instruct the service condition that the oil of the different filter precisioies of second portion parallel connection is filtered, thus make the dustiness of system fluid meet test requirements document.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310256169.9A CN103307057B (en) | 2013-06-25 | 2013-06-25 | Pollution and abrasion test system for electro-hydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310256169.9A CN103307057B (en) | 2013-06-25 | 2013-06-25 | Pollution and abrasion test system for electro-hydraulic servo valve |
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| CN103307057A CN103307057A (en) | 2013-09-18 |
| CN103307057B true CN103307057B (en) | 2015-07-15 |
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| CN201310256169.9A Expired - Fee Related CN103307057B (en) | 2013-06-25 | 2013-06-25 | Pollution and abrasion test system for electro-hydraulic servo valve |
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| CN103557204B (en) * | 2013-11-12 | 2016-02-03 | 北京理工大学 | A kind of hydraulicdirectional control valve contamination wear and Environment restore test stand |
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| CN107559266B (en) * | 2017-10-25 | 2023-12-15 | 北京富力通达科技有限公司 | Servo control mechanism device and parallel synchronization control method |
| CN108169091B (en) * | 2018-01-14 | 2023-05-16 | 陕西东方长安航空科技有限公司 | Servo valve pollution sensitivity measurement test device and test method |
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| CN110131247B (en) * | 2019-05-20 | 2024-03-08 | 洛阳大工检测技术有限公司 | Oil pollution degree control method and control system based on-line detection |
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| CN112963407B (en) * | 2021-04-01 | 2022-10-25 | 北京天玛智控科技股份有限公司 | System for testing pollution sensitivity of reversing valve |
| CN112963408B (en) * | 2021-04-01 | 2022-09-23 | 北京天玛智控科技股份有限公司 | Method for testing pollution sensitivity of reversing valve |
| CN114321097B (en) * | 2021-12-06 | 2023-07-25 | 中国航空综合技术研究所 | Method for determining valve core and valve sleeve life prediction model for servo valve |
| CN115789021A (en) * | 2023-02-03 | 2023-03-14 | 烟台中宇航空液压有限公司 | Electro-hydraulic servo valve pollution abrasion test device |
| CN116658473A (en) * | 2023-07-31 | 2023-08-29 | 河南卓元航空动力***有限公司 | Pollution characteristic verification test system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500133A (en) * | 1975-12-30 | 1978-02-08 | Secr Defence | Hydraulic test equipment |
| CN2179483Y (en) * | 1993-06-11 | 1994-10-12 | 中国矿业大学北京研究生部 | Pollution susceptibility testing device for hydraulic valve |
| DE202005018061U1 (en) * | 2005-11-18 | 2006-01-19 | Dipl.-Ing. H. Schulz Hds Hydraulik Gmbh & Co. Kg | Testing device for hose lines |
| CN201396339Y (en) * | 2009-04-28 | 2010-02-03 | 西安建筑科技大学 | Oil contamination-monitoring system for hydraulic system |
| CN201621133U (en) * | 2010-04-02 | 2010-11-03 | 山东电力研究院 | Servo valve test system |
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2013
- 2013-06-25 CN CN201310256169.9A patent/CN103307057B/en not_active Expired - Fee Related
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