CN101655116B - Hydraulic power source system - Google Patents
Hydraulic power source system Download PDFInfo
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- CN101655116B CN101655116B CN200910307160XA CN200910307160A CN101655116B CN 101655116 B CN101655116 B CN 101655116B CN 200910307160X A CN200910307160X A CN 200910307160XA CN 200910307160 A CN200910307160 A CN 200910307160A CN 101655116 B CN101655116 B CN 101655116B
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Abstract
The invention discloses a hydraulic power source system which comprises a hydraulic system and an auxiliary hydraulic device. The hydraulic system comprises an oil pump, a one-way valve, a first oil filter, a second oil filter, a switch, a scavenge filter and a radiator which are sequentially connected to form a loop; the auxiliary hydraulic device comprises an oil tank and a low-pressure oil transfer pump unit; the oil tank is connected between the oil pump and the radiator of the hydraulic system by a one-way counterbalance valve; and the low-pressure oil transfer pump unit is connected between the first oil filter and the one-way valve of the hydraulic system by an oil supply one-way valve. The invention has the advantages that a switching device in an open-close mode in a common hydraulic power source system is canceled and replaced by a hydraulic auxiliary system, thereby improving the reliability and the safety of the hydraulic power source system and decreasing the production cost. When the hydraulic system works, the auxiliary hydraulic device does not work, and the common characteristics and respective independence of the two systems are fully ensured.
Description
Technical field
The present invention relates to a kind of hydraulic power source system.
Background technique
A large amount of hydraulic equipments, device, work system need the outside that hydraulic power supply is provided, for example, and hydraulic work equipment of the ground check of aircraft and maintenance, deep-sea, underground work or the like.In general, hydraulic power supply has complete oil hydraulic circuit and unit, by the extremely outside hydraulic work equipment that connects therewith of work voltage supply power oil sources, by start or drive to form oil return again to the return line of hydraulic power source device, form a loop, this circuit system requires to form closed circuit, promptly, keep the fluid amount not change in the whole loop of two equipment of requirement connection work, the return pressure in the loop keeps not losing efficacy.So at least, require the necessary and system closing of fuel tank of hydraulic power source system.
Generally, hydraulic power source system need satisfy the operation work under multiple demand before not connecting hydraulic work equipment, so must have a system and fuel tank to carry out the switching of open and close formula, comparatively common design as shown in Figure 2: its oil hydraulic circuit comprises oil pump 4, one-way valve 5, the first oil filter, 6, the second oil filter 7, switch 8, oil return filter 1, radiator 2 and two-position four way change valve 25; Return line comprises oil return filter 1, radiator 2, two-position four-way valve 25, fuel tank 10 and safety valve 23.It realizes that fuel tank switches the main two-position four way change valve 25 (electronic or manual) that passes through and realizes, requires reliable operation, does not allow operate miss, and the strict demand of switching the inner ne-leakage of equipment is arranged.If flow system flow is big, then COMM communication is in order to satisfy inner latus rectum requirement, and its volume, weight all need very big, installs, uses operation to bring difficulty and restriction for design and manufacturing.
Summary of the invention
The present invention has overcome shortcoming of the prior art, and a kind of hydraulic power source system is provided, and can satisfy the demand of closed type hydraulic system under different working modes, has improved the reliability and the Security of hydraulic power source system, has reduced cost of production.
Technological scheme of the present invention is as follows: a kind of hydraulic power source system, comprise hydraulic system and auxiliary hydraulic set, and described hydraulic system is connected with radiator successively by oil pump, one-way valve, the first oil filter, the second oily filter, switch, oil return filter, forms the loop; Described auxiliary hydraulic set comprises fuel tank and low pressure oil transfer pump group, and fuel tank inserts by unidirectional back pressure valve between the oil pump and radiator of hydraulic system, and low pressure oil transfer pump group inserts between the first oil filter and one-way valve of hydraulic system by oil feed non-return valve.
Described fuel tank, low pressure oil transfer pump group and externally refuel one-way valve, the 3rd oil filter and add oil switch and be connected successively insert between the 3rd oil filter and fuel tank and refuel pressure switch, form external filling conduit.
Between described the 3rd oil filter and fuel tank, insert relief valve.
Compared with prior art, advantage of the present invention is: cancelled the COMM communication in the common hydraulic power source system, substituted with a kind of hydraulic booster system, improved the reliability and the Security of hydraulic power supply system, reduced cost of production.
Hydraulic system and auxiliary hydraulic set are installed in the same equipment body, and form interlocking on electrical design, promptly can only start a table oil pump work wherein, prevent that misoperation from causing that functions of the equipments lost efficacy.
Owing to have unidirectional back pressure valve to be connected between the fuel tank of hydraulic system and auxiliary hydraulic set, need do circulating filtration, replenish fluid, when getting rid of work such as gas, auxiliary hydraulic set work, fluid is infeeded the voltage supply pipeline of hydraulic system, by the hydraulic units such as oil filter of hydraulic system itself, again through with unidirectional back pressure opened by pressure that hydraulic system return line end is connected after be back to fuel tank scheme realize; When hydraulic work system, auxiliary hydraulic set does not participate in work, has guaranteed the shared characteristic of two systems and independence separately fully.
Because hydraulic system oil return end has coupled unidirectional back pressure, is back to fuel tank by opened by pressure, form circulation, and when hydraulic work system, can be used as the return pressure relief valve, improved the Security of hydraulic power source system.
Because fuel tank and low pressure oil transfer pump group also are connected with external filling conduit, make low pressure oil transfer pump group play the function that a pump is used more, have both simplified system, have reduced cost of production again.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a schematic representation of the present invention;
Fig. 2 is the schematic representation of common hydraulic power source system.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
As shown in Figure 1, a kind of hydraulic power source system comprises hydraulic system and auxiliary hydraulic set, and hydraulic system comprises the loop that oil pump 4, one-way valve 5, the first oil filter, 6, the second oil filter 7, switch 8, oil return filter 1 and radiator 2 form; Auxiliary hydraulic set comprises fuel tank 10 and low pressure oil transfer pump group 11, fuel tank 10 inserts between the oil pump 4 and radiator 2 of hydraulic system by unidirectional back pressure valve 3, and low pressure oil transfer pump group 11 inserts between the first oil filter 6 and one-way valve 5 of hydraulic system by oil feed non-return valve 12.
Working principle of the present invention is: when auxiliary hydraulic set is worked, 11 work of low pressure oil transfer pump group, close and add oil switch 17, fluid is opened oil feed non-return valve 12 and is entered hydraulic system, filter through the first oil filter, 6, the second oil filter 7, the switch 8 through opening, oil return filter 1 and radiator 2, depended on pressure is opened unidirectional back pressure valve 3, be back to fuel tank 10 and form circulating filtration, replenish the fluid of hydraulic system.If connected outside hydraulic work equipment, then can be to the hydraulic work equipment fuel feeding of outside.
Through certain circulation, its fuel tank fluid and pipeline are well filtered, can by external oiling one-way valve 13, the 3rd oil filter 14, refuel pressure switch 15, add 17 pairs of external dressings of oil switch.
When hydraulic work system, auxiliary hydraulic set quits work.Owing to be provided with oil feed non-return valve 12, the fuel feeding during work can not be back to auxiliary hydraulic system; Again since the cracking pressure that unidirectional back pressure valve 3 is provided with greater than maximum return pressure, unidirectional back pressure valve 3 is in closed condition fully, do not participate in work so guaranteed fuel tank 10, form a closed system completely, when fortuitous event occurring, the pressure of closed system is excessive, and when surpassing the cracking pressure of unidirectional back pressure valve 3, unidirectional back pressure valve 3 can play the effect of oil return relief valve again.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (2)
1. a hydraulic power source system comprises hydraulic system and auxiliary hydraulic set, and described hydraulic system is connected with radiator successively by oil pump, one-way valve, the first oil filter, the second oily filter, switch, oil return filter, forms the loop; It is characterized in that: described auxiliary hydraulic set comprises fuel tank and low pressure oil transfer pump group, fuel tank inserts by unidirectional back pressure valve between the oil pump and radiator of hydraulic system, and low pressure oil transfer pump group inserts between the first oil filter and one-way valve of hydraulic system by oil feed non-return valve; Described fuel tank, low pressure oil transfer pump group and external oiling one-way valve, the 3rd oil are filtered and are added oil switch and is connected successively.
2. hydraulic power source system according to claim 1 is characterized in that: insert relief valve between described the 3rd oil filter and fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910307160XA CN101655116B (en) | 2009-09-17 | 2009-09-17 | Hydraulic power source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910307160XA CN101655116B (en) | 2009-09-17 | 2009-09-17 | Hydraulic power source system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101655116A CN101655116A (en) | 2010-02-24 |
| CN101655116B true CN101655116B (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910307160XA Active CN101655116B (en) | 2009-09-17 | 2009-09-17 | Hydraulic power source system |
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| Country | Link |
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| CN (1) | CN101655116B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120011839A1 (en) * | 2010-07-13 | 2012-01-19 | Kandil Magdy A | Auxiliary hydraulic power generation system |
| CN102312881B (en) * | 2011-08-22 | 2014-07-30 | 三一重工股份有限公司 | Flushing circuit of closed hydraulic system |
| CN102410281B (en) * | 2011-12-05 | 2014-06-25 | 曲国润 | Hydraulic relay wheel |
| CN103818546A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | Operating power steering system for airplane hydraulic control |
| CN105605007A (en) * | 2014-11-20 | 2016-05-25 | 中国直升机设计研究所 | Design of auxiliary hydraulic combination valve |
| CN110920914B (en) * | 2019-12-06 | 2021-04-06 | 南京航空航天大学 | Comprehensive thermal management and regulation system for airplane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777888A (en) * | 1970-05-21 | 1973-12-11 | Bosch Gmbh Robert | Arrangement for pumping a filtered fluid |
| US5395519A (en) * | 1993-08-03 | 1995-03-07 | Caterpillar Inc. | Filter device for a hydraulic system |
| WO2002101246A1 (en) * | 2001-06-08 | 2002-12-19 | Groenfur Joergen | A method and device for fine filtering |
| CN201521510U (en) * | 2009-09-17 | 2010-07-07 | 成都成飞航空设备开发有限责任公司 | Hydraulic power source system |
-
2009
- 2009-09-17 CN CN200910307160XA patent/CN101655116B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777888A (en) * | 1970-05-21 | 1973-12-11 | Bosch Gmbh Robert | Arrangement for pumping a filtered fluid |
| US5395519A (en) * | 1993-08-03 | 1995-03-07 | Caterpillar Inc. | Filter device for a hydraulic system |
| WO2002101246A1 (en) * | 2001-06-08 | 2002-12-19 | Groenfur Joergen | A method and device for fine filtering |
| CN201521510U (en) * | 2009-09-17 | 2010-07-07 | 成都成飞航空设备开发有限责任公司 | Hydraulic power source system |
Non-Patent Citations (1)
| Title |
|---|
| 祁功道.多功能液压源设计.《机床与液压》.2004,(第12期), * |
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| CN101655116A (en) | 2010-02-24 |
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Address after: 610091 Sichuan Province, Chengdu city Qingyang District Qingyang Industrial Development Zone Tongcheng Road No. 333 Patentee after: Chengdu established Aviation Technology Co., Ltd. Address before: 610091 Sichuan Province, Chengdu city Qingyang District Qingyang Industrial Development Zone Tongcheng Road No. 333 Patentee before: CHENGDU CHENGSHE AVIATION TECHNOLOGY CO., LTD. |