CN103527564A - Method for adjusting return oil pressure of hydraulic pump shell - Google Patents
Method for adjusting return oil pressure of hydraulic pump shell Download PDFInfo
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- CN103527564A CN103527564A CN201310543111.2A CN201310543111A CN103527564A CN 103527564 A CN103527564 A CN 103527564A CN 201310543111 A CN201310543111 A CN 201310543111A CN 103527564 A CN103527564 A CN 103527564A
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Abstract
The invention belongs to the technical field of aviation, and relates to an engine aerial test hydraulic load simulating device, in particular to a method for adjusting return oil pressure of a hydraulic pump shell. According to the method for adjusting the return oil pressure of the hydraulic pump shell, return oil of the hydraulic pump shell returns to a hydraulic oil tank through different pipelines by powering on and powering off of an electromagnetic directional valve under limited conditions in an engine aerial test, and it is ensured that the return oil pressure of the hydraulic pump shell meets the requirement for work of a hydraulic pump.
Description
Technical field
The invention belongs to aeronautical technology field, relate to a kind of motor in-flight test hydraulic load simulator, relate in particular to a kind of adjusting method of casing of hydraulic pump return pressure.
Background technique
In engine hydraulic Load test, the pressure of the housing oil return of oil hydraulic pump has certain restriction.But the housing returning-oil temperature of oil hydraulic pump is very high, should after Fuel Oil Cooler is cooling, get back to hydraulic oil container.
In the in-flight test of motor, because installing space is limit, the housing oil return that independent Fuel Oil Cooler carrys out cooling liquid press pump is specially installed in inconvenience, so also causes the waste of system.
At present, when carrying out the in-flight test of motor, hydraulic oil container is directly got back in casing of hydraulic pump oil return, and the hydraulic oil of hydraulic load simulation part returns hydraulic oil container after fuel cools system.In this kind of test method, when flow system flow hour, the oil temperature of hydraulic pressure housing oil return can not obtain cooling, and the oil temperature of whole system is raise rapidly, so that system cisco unity malfunction.
Summary of the invention
The object of this invention is to provide a kind ofly in motor in-flight test, under limited condition, guarantee that casing of hydraulic pump return pressure meets the adjusting method of a kind of casing of hydraulic pump return pressure that hydraulic pump works requires.
Technical solution of the present invention is, test will be put and be comprised hydraulic oil container, oil hydraulic pump, hydraulic load simulation part and fuel cools system, between the rear end of the front end of fuel cools system and casing of hydraulic pump oil return filter, connect a solenoid directional control valve, this solenoid directional control valve is two position, three-way electromagnetic change valve open in usual, the pressure hydraulic fluid port of solenoid directional control valve is connected with the outlet of casing of hydraulic pump oil return filter, the return opening of solenoid directional control valve is connected with hydraulic oil container, and the hydraulic pipe line of the outlet of solenoid directional control valve and fuel cools system is in parallel; When the flow of hydraulic load simulation part lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure hydraulic fluid port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, pass through Fuel Oil Cooler, hydraulic return fuel tank; When the flow of hydraulic load simulation part higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure hydraulic fluid port of solenoid directional control valve and the return opening of solenoid directional control valve are connected, the housing oil return of oil hydraulic pump is directly returned hydraulic oil container without fuel cools system, and the hydraulic oil of hydraulic load simulation part returns hydraulic oil container through fuel cools system.
The advantageous effect that the present invention has:
1) when carrying out the in-flight test of motor, hydraulic oil container is directly got back in casing of hydraulic pump oil return, and the hydraulic oil of hydraulic load simulation part returns hydraulic oil container after fuel cools system.In this kind of test method, when flow system flow hour, the oil temperature of hydraulic pressure housing oil return can not obtain cooling, and the oil temperature of whole system is raise rapidly, so that system cisco unity malfunction.And adopt technological scheme of the present invention, the housing oil return of oil hydraulic pump in the scope from minimum to rated flow, all can obtain cooling or mixing fully rear cooling at hydraulic load simulation flow partly, protected the normal operation of oil hydraulic pump;
2) technological scheme of the present invention, has reduced by a Fuel Oil Cooler, thereby has reduced the demand to the aircraft fuel oil amount for cooling, has guaranteed by the fuel delivery of spreadsheet engine, guarantees carrying out smoothly of engine test;
3) reduced by a Fuel Oil Cooler, the weight of whole system reduces, and the whole platform of taking a flight test has been made to contribution.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
Embodiment
1) oil hydraulic pump 2 is arranged on by clip on the output shaft of engine accessory power rating case, and when oil hydraulic pump rotates, oil suction from hydraulic oil container 1, pumps the hydraulic oil of high pressure and for the lubricated housing oil return of oil hydraulic pump cooling itself;
2) hydraulic oil that pumps high pressure by hydraulic load simulate part 3, fuel cools system 5 is got back to hydraulic oil container; Wherein hydraulic load simulation part is converted into thermal energy consumption the pressure energy of hydraulic oil and has fallen.
3), for the lubricated housing oil return of oil hydraulic pump cooling itself, pass through filter, be connected on the pressure hydraulic fluid port of solenoid directional control valve 4;
4) solenoid directional control valve 4 is two position, three-way electromagnetic change valves open in usual, the pressure hydraulic fluid port of solenoid directional control valve is connected with the outlet of casing of hydraulic pump oil return filter, the return opening of solenoid directional control valve is connected with hydraulic oil container, and the hydraulic pipe line of the outlet of solenoid directional control valve and fuel cools system is in parallel;
5) when the flow of hydraulic load simulation part lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure hydraulic fluid port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, pass through fuel cools system, hydraulic return fuel tank; When the flow of hydraulic load simulation part higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure hydraulic fluid port of solenoid directional control valve and the return opening of solenoid directional control valve are connected, the housing oil return of oil hydraulic pump is directly returned hydraulic oil container without fuel cools system, and the hydraulic oil of hydraulic load simulation part returns hydraulic oil container through fuel cools system.
Claims (1)
1. the adjusting method of a casing of hydraulic pump return pressure, comprise hydraulic oil container, oil hydraulic pump, hydraulic load simulation part and fuel cools system, it is characterized in that: between the front end of fuel cools system and the rear end of casing of hydraulic pump oil return filter, connect a solenoid directional control valve, this solenoid directional control valve is two position, three-way electromagnetic change valve open in usual, the pressure hydraulic fluid port of solenoid directional control valve is connected with the outlet of casing of hydraulic pump oil return filter, the return opening of solenoid directional control valve is connected with hydraulic oil container, and the hydraulic pipe line of the outlet of solenoid directional control valve and fuel cools system is in parallel; When the flow of hydraulic load simulation part lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure hydraulic fluid port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, pass through Fuel Oil Cooler, hydraulic return fuel tank; When the flow of hydraulic load simulation part higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure hydraulic fluid port of solenoid directional control valve and the return opening of solenoid directional control valve are connected, the housing oil return of oil hydraulic pump is directly returned hydraulic oil container without fuel cools system, and the hydraulic oil of hydraulic load simulation part returns hydraulic oil container through fuel cools system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543111.2A CN103527564B (en) | 2013-11-05 | 2013-11-05 | A kind of adjusting method of return oil pressure of hydraulic pump shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543111.2A CN103527564B (en) | 2013-11-05 | 2013-11-05 | A kind of adjusting method of return oil pressure of hydraulic pump shell |
Publications (2)
| Publication Number | Publication Date |
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| CN103527564A true CN103527564A (en) | 2014-01-22 |
| CN103527564B CN103527564B (en) | 2015-10-28 |
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| CN201310543111.2A Active CN103527564B (en) | 2013-11-05 | 2013-11-05 | A kind of adjusting method of return oil pressure of hydraulic pump shell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713734A (en) * | 2015-04-07 | 2015-06-17 | 上海中船三井造船柴油机有限公司 | Automatic measurement system and method for return oil of low-speed diesel engine for test run platform |
| CN106523473A (en) * | 2016-12-28 | 2017-03-22 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic load simulation device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351895B (en) * | 2016-08-29 | 2018-08-07 | 北汽福田汽车股份有限公司 | Plunger pump hydraulic system and engineering machinery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5941689A (en) * | 1996-06-03 | 1999-08-24 | Sauer Inc. | Control system and method to control variable hydraulic pumps with a temperature sensor |
| EP1788373A2 (en) * | 2005-11-18 | 2007-05-23 | Dipl.-Ing. H. Schulz HDS Hydraulic GmbH & Co. KG | Hose testing device |
| CN101498328A (en) * | 2009-03-13 | 2009-08-05 | 南京高精船用设备有限公司 | Ship hydraulic station for realizing automatic cycle cooling |
| CN201858218U (en) * | 2010-10-13 | 2011-06-08 | 三一重机有限公司 | Oil return device for engineering machinery |
-
2013
- 2013-11-05 CN CN201310543111.2A patent/CN103527564B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5941689A (en) * | 1996-06-03 | 1999-08-24 | Sauer Inc. | Control system and method to control variable hydraulic pumps with a temperature sensor |
| EP1788373A2 (en) * | 2005-11-18 | 2007-05-23 | Dipl.-Ing. H. Schulz HDS Hydraulic GmbH & Co. KG | Hose testing device |
| CN101498328A (en) * | 2009-03-13 | 2009-08-05 | 南京高精船用设备有限公司 | Ship hydraulic station for realizing automatic cycle cooling |
| CN201858218U (en) * | 2010-10-13 | 2011-06-08 | 三一重机有限公司 | Oil return device for engineering machinery |
Non-Patent Citations (1)
| Title |
|---|
| 江辉军 等: "飞机液压系统流量压力负载模拟", 《航空学报》, vol. 32, no. 7, 25 July 2011 (2011-07-25), pages 1357 - 1370 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713734A (en) * | 2015-04-07 | 2015-06-17 | 上海中船三井造船柴油机有限公司 | Automatic measurement system and method for return oil of low-speed diesel engine for test run platform |
| CN106523473A (en) * | 2016-12-28 | 2017-03-22 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic load simulation device |
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| CN103527564B (en) | 2015-10-28 |
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