CN103527564B - A kind of adjusting method of return oil pressure of hydraulic pump shell - Google Patents
A kind of adjusting method of return oil pressure of hydraulic pump shell Download PDFInfo
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- CN103527564B CN103527564B CN201310543111.2A CN201310543111A CN103527564B CN 103527564 B CN103527564 B CN 103527564B CN 201310543111 A CN201310543111 A CN 201310543111A CN 103527564 B CN103527564 B CN 103527564B
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Abstract
The invention belongs to technical field of aerospace, relate to a kind of motor in-flight test hydraulic load simulator, particularly relate to a kind of adjusting method of return oil pressure of hydraulic pump shell.In motor in-flight test, under limited conditions, by energising and the power-off of a solenoid directional control valve, casing of hydraulic pump oil return selects different pipelines to get back to the method for hydraulic oil container, ensures that return oil pressure of hydraulic pump shell meets the adjusting method of a kind of return oil pressure of hydraulic pump shell that hydraulic pump works requires.
Description
Technical field
The invention belongs to technical field of aerospace, relate to a kind of motor in-flight test hydraulic load simulator, particularly relate to a kind of adjusting method of return oil pressure of hydraulic pump shell.
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, hydraulic oil container should be got back to after Fuel Oil Cooler cooling.
In the in-flight test of motor, because installing space 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, casing of hydraulic pump oil return directly gets back to hydraulic oil container, 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 be cooled, and the oil temperature of whole system is raised rapidly, so that system cisco unity malfunction.
Summary of the invention
The object of this invention is to provide a kind of in motor in-flight test, ensure that return oil pressure of hydraulic pump shell meets the adjusting method of a kind of return oil pressure of hydraulic pump shell that hydraulic pump works requires under limited conditions.
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, a solenoid directional control valve is connected between the rear end of the front end of fuel cools system and casing of hydraulic pump oil return filter, this solenoid directional control valve is two position, three-way electromagnetic change valve open in usual, the outlet that pressure oil port and the casing of hydraulic pump oil return of solenoid directional control valve are filtered is connected, the return opening of solenoid directional control valve is connected with hydraulic oil container, the outlet of solenoid directional control valve and the hydraulic pipe line parallel connection of fuel cools system; When hydraulic load simulation part flow lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure oil port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, through Fuel Oil Cooler together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, hydraulic return fuel tank; When hydraulic load simulation part flow higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure oil 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 directly returns 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, casing of hydraulic pump oil return directly gets back to hydraulic oil container, 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 be cooled, and the oil temperature of whole system is raised rapidly, so that system cisco unity malfunction.And adopting technological scheme of the present invention, the housing oil return of oil hydraulic pump simulates the flow of part from minimum in the scope of rated flow in hydraulic load, all can be cooled or mix rear cooling fully, protect the normal work of oil hydraulic pump;
2) technological scheme of the present invention, decreases a Fuel Oil Cooler, thus decreases the demand to the aircraft fuel oil amount for cooling, and ensure that by the fuel delivery of spreadsheet engine, guarantees carrying out smoothly of engine test;
3) decrease a Fuel Oil Cooler, the weight of whole system reduces, and has made contribution to whole platform of taking a flight test.
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 the housing oil return for oil hydraulic pump cooling itself lubrication;
2) hydraulic oil pumping high pressure gets back to hydraulic oil container by hydraulic load simulation part 3, fuel cools system 5; Wherein hydraulic load simulation part is converted into thermal energy consumption the pressure energy of hydraulic oil and has fallen.
3) for the housing oil return of oil hydraulic pump cooling itself lubrication, through filter, be connected in the pressure oil 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 outlet that pressure oil port and the casing of hydraulic pump oil return of solenoid directional control valve are filtered is connected, the return opening of solenoid directional control valve is connected with hydraulic oil container, the outlet of solenoid directional control valve and the hydraulic pipe line parallel connection of fuel cools system;
5) when hydraulic load simulation part flow lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure oil port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, through fuel cools system together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, hydraulic return fuel tank; When hydraulic load simulation part flow higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure oil 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 directly returns 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 return oil pressure of hydraulic pump shell, comprise hydraulic oil container, oil hydraulic pump, hydraulic load simulation part and fuel cools system, it is characterized in that: 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 outlet that pressure oil port and the casing of hydraulic pump oil return of solenoid directional control valve are filtered is connected, the return opening of solenoid directional control valve is connected with hydraulic oil container, oil and the fuel-displaced of hydraulic load simulation part of electromagnetic switch valve outlet port are incorporated to fuel cools system jointly, when hydraulic load simulation part flow lower than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve no electric circuit, the pressure oil port of solenoid directional control valve and the outlet of solenoid directional control valve are connected, through Fuel Oil Cooler together with the hydraulic oil of the housing oil return of oil hydraulic pump and hydraulic load simulation part, hydraulic return fuel tank, when hydraulic load simulation part flow higher than oil hydraulic pump rated flow 2/3 time, solenoid directional control valve energising commutation, the pressure oil 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 directly returns 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 |
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| Publication Number | Publication Date |
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| CN103527564A CN103527564A (en) | 2014-01-22 |
| CN103527564B true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351895A (en) * | 2016-08-29 | 2017-01-25 | 北汽福田汽车股份有限公司 | plunger pump hydraulic system and engineering machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713734B (en) * | 2015-04-07 | 2017-02-22 | 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 |
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 |
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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 |
|---|
| 飞机液压系统流量压力负载模拟;江辉军 等;《航空学报》;20110725;第32卷(第7期);第1357-1370页 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351895A (en) * | 2016-08-29 | 2017-01-25 | 北汽福田汽车股份有限公司 | plunger pump hydraulic system and engineering machine |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103527564A (en) | 2014-01-22 |
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