CN102829028B - Oil supply system of hydraulic pump station and oil interruption loop of oil supply system - Google Patents

Oil supply system of hydraulic pump station and oil interruption loop of oil supply system Download PDF

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Publication number
CN102829028B
CN102829028B CN201210362100.XA CN201210362100A CN102829028B CN 102829028 B CN102829028 B CN 102829028B CN 201210362100 A CN201210362100 A CN 201210362100A CN 102829028 B CN102829028 B CN 102829028B
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oil
oil supply
valve
main road
communicated
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CN102829028A (en
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孙时建
吴晓光
时元海
武强
亓晓涛
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Laiwu Iron and Steel Group Co Ltd
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Laiwu Iron and Steel Group Co Ltd
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Abstract

The invention discloses an oil interruption loop. When unexpected conditions such as oil leakage occur in a main oil path of an oil supply system and an oil supply pipeline needs to be emergently cut off, an oil supply pump stops working, a first reversing valve and a second reversing valve are both switched to a work station at the right end, and then high-pressure oil enters a control cavity of a hydraulic control one-way valve through the first reversing valve, so that a work station of a valve core of the hydraulic control one-way valve is switched, communication between the oil supply cavity and the main oil path of the oil supply system is cut off, and oil in an energy accumulator and each pipeline flows back into an oil tank respectively through a third branch, a second main path and a fourth branch, so that unloading operation is finished when the oil path is ensured to be rapidly cut off. The invention also discloses an oil supply system adopting the oil interruption loop for the hydraulic pump station. The oil supply system of the hydraulic pump station can be rapidly cut off in necessary.

Description

Hydraulic power unit oil supply system and oil-break loop thereof
Technical field
The present invention relates to Hydraulic Power Transmission System technical field, particularly a kind of oil-break loop.The invention still further relates to the hydraulic power unit oil supply system in this oil-break loop of a kind of application.
Background technique
In general industrial and mining enterprise, hydraulic power unit is widely used in daily process of manufacture as a kind of comparatively common power source, and continuing to increase along with production intensity, people it is also proposed higher requirement to its usability.
In current existing hydraulic power unit working procedure, when the fuel delivery in its oil supply system is comparatively large, oil pressure is higher, when being especially furnished with accumulator in system, if when there is the accidents such as leakage of oil in its oil feed line, due to fast and effeciently working connection cannot be cut off in time, cause a large amount of oil leaks, cause the serious waste of fluid, and cause serious adverse effect to surrounding environment.
Therefore, how to provide a set of circuit system, disconnecting fast where necessary to enable hydraulic power unit oil supply system is the important technological problems that those skilled in the art need to solve at present.
Summary of the invention
The object of this invention is to provide a kind of oil-break loop, this oil-break loop can disconnect hydraulic power unit oil supply system where necessary fast.Another object of the present invention is to provide a kind of hydraulic power unit oil supply system applying above-mentioned oil-break loop.
For solving the problems of the technologies described above, the invention provides a kind of oil-break loop, for hydraulic power unit oil supply system, comprise the Pilot operated check valve and the first selector valve that cooperatively interact, the fuel supply chamber of described Pilot operated check valve is connected with oil supply system working connection, and is communicated with the first main road between the fuel supply chamber of described Pilot operated check valve and the oil feed pump of oil supply system;
Be communicated with the first branch road between described first main road and oil supply system working connection, described first selector valve is specifically arranged on described first branch road, and is communicated with the second branch road between described first selector valve and the control chamber of described Pilot operated check valve;
The second main road is communicated with between the fuel tank of described first selector valve and oil supply system, described first main road and described second main road are connected with oil supply system accumulator respectively, be communicated with the 3rd branch road between described first main road and described second main road, and described 3rd branch road is provided with electromagnetic relief valve;
Be communicated with the 4th branch road between described first main road and fuel tank, and described 4th branch road is provided with the second selector valve.
Preferably, described first main road is provided with the first safety check, and described first safety check is specifically positioned at the upstream of described first main road and described 4th branch road joint;
Described second main road is provided with the second safety check, and described second safety check is specifically positioned at the downstream of described first selector valve;
Described 3rd branch road is provided with the 3rd safety check, and described 3rd safety check is specifically positioned at the downstream of described electromagnetic relief valve.
Preferably, described first safety check, described second safety check and described 3rd safety check are all specially one-way valve.
Preferably, described first selector valve and described second selector valve are all specially two-position four-way solenoid directional control valve.
The present invention also provides a kind of hydraulic power unit oil supply system, comprise the fuel tank, oil feed pump, accumulator and the working connection that cooperatively interact, described working connection and be communicated with oil-break loop between described oil feed pump, described fuel tank and described accumulator, and described oil-break loop is specially the oil-break loop described in above-mentioned any one.
Relative above-mentioned background technology, oil-break loop provided by the present invention, for hydraulic power unit oil supply system, comprise the Pilot operated check valve and the first selector valve that cooperatively interact, the fuel supply chamber of described Pilot operated check valve is connected with oil supply system working connection, and is communicated with the first main road between the fuel supply chamber of described Pilot operated check valve and the oil feed pump of oil supply system; Be communicated with the first branch road between described first main road and oil supply system working connection, described first selector valve is specifically arranged on described first branch road, and is communicated with the second branch road between described first selector valve and the control chamber of described Pilot operated check valve; The second main road is communicated with between the fuel tank of described first selector valve and oil supply system, described first main road and described second main road are connected with oil supply system accumulator respectively, be communicated with the 3rd branch road between described first main road and described second main road, and described 3rd branch road is provided with electromagnetic relief valve; Be communicated with the 4th branch road between described first main road and fuel tank, and described 4th branch road is provided with the second selector valve.In working procedure, when under oil supply system normal operating condition, described first selector valve and described second selector valve are all in left end station, the a part of high-voltage oil liquid exported from oil feed pump enters oil supply system working connection via after described first main road respectively by the fuel supply chamber of described first branch road and described Pilot operated check valve, and another part high-voltage oil liquid enters in accumulator by described first main road, when oil supply system working connection occurs that the emergency case such as leakage of oil need emergency cut-off oil feed line, oil feed pump quits work, described first selector valve and described second selector valve are all converted to right-hand member station, now high-voltage oil liquid enters in the control chamber of described Pilot operated check valve via described first switching valve, make the spool conversion station of described Pilot operated check valve and cut off being communicated with between its fuel supply chamber with oil supply system working connection, fluid in fluid in accumulator and each pipeline is respectively via described 3rd branch road, described second main road and described 4th branch road are back in fuel tank, thus off-load operation is completed while guarantee fast shut-off oil circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The assembly structure schematic diagram in the hydraulic power unit oil supply system that Fig. 1 provides for a kind of embodiment of the present invention and oil-break loop thereof.
Embodiment
Core of the present invention is to provide a kind of oil-break loop, and this oil-break loop can disconnect hydraulic power unit oil supply system where necessary fast; Meanwhile, a kind of hydraulic power unit oil supply system applying above-mentioned oil-break loop is provided.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, the assembly structure schematic diagram in the hydraulic power unit oil supply system that Fig. 1 provides for a kind of embodiment of the present invention and oil-break loop thereof.
In a specific embodiment, oil-break loop provided by the present invention, for hydraulic power unit oil supply system, comprise the Pilot operated check valve 11 and the first selector valve 12 that cooperatively interact, the fuel supply chamber of Pilot operated check valve 11 is connected with oil supply system working connection 31, and is communicated with the first main road 21 between the oil feed pump 32 of the fuel supply chamber of Pilot operated check valve 11 and oil supply system; Be communicated with the first branch road 23, first selector valve 12 between the first main road 21 and oil supply system working connection 31 to be specifically arranged on the first branch road 23, and be communicated with the second branch road 24 between the first selector valve 12 and the control chamber of Pilot operated check valve 11; The second main road 22 is communicated with between the fuel tank 33 of the first selector valve 12 and oil supply system, first main road 21 and the second main road 22 are connected with oil supply system accumulator 34 respectively, be communicated with the 3rd branch road 25 between the first main road 21 and the second main road 22, and the 3rd branch road 25 is provided with electromagnetic relief valve 13; Be communicated with the 4th branch road 26 between the first main road 21 and fuel tank 33, and the 4th branch road 26 is provided with the second selector valve 14.In working procedure, when under oil supply system normal operating condition, first selector valve 12 and the second selector valve 14 are all in left end station, the a part of high-voltage oil liquid exported from oil feed pump 32 enters oil supply system working connection 31 via after the first main road 21 respectively by the fuel supply chamber of the first branch road 23 and Pilot operated check valve 11, and another part high-voltage oil liquid enters in accumulator 34 by the first main road 21, when oil supply system working connection 31 occurs that the emergency case such as leakage of oil need emergency cut-off oil feed line, oil feed pump 32 quits work, first selector valve 12 and the second selector valve 14 are all converted to right-hand member station, now high-voltage oil liquid enters in the control chamber of Pilot operated check valve 11 via the first switching valve 12, make the spool conversion station of Pilot operated check valve 11 and cut off being communicated with between its fuel supply chamber with oil supply system working connection 31, fluid in fluid in accumulator 34 and each pipeline is respectively via the 3rd branch road 25, second main road 22 and the 4th branch road 26 are back in fuel tank 33, thus off-load operation is completed while guarantee fast shut-off oil circuit.
Further, the first main road 21 is provided with the first safety check 15, and the first safety check 15 is specifically positioned at the upstream of the first main road 21 and the 4th branch road 26 joint; Second main road 22 is provided with the second safety check 16, and the second safety check 16 is specifically positioned at the downstream of the first selector valve 12; 3rd branch road 25 is provided with the 3rd safety check 17, and the 3rd safety check 17 is specifically positioned at the downstream of electromagnetic relief valve 13.In oil supply system running, first safety check 15, second safety check 16 and the 3rd safety check 17 can flow to by the fluid in conservative control pipeline, effectively avoid causing structural damage because of fluid adverse current to the associated components such as pipeline or hydrovalve, thus the operation stability of whole oil supply system and Security are significantly improved.
More specifically, the first safety check 15, second safety check 16 and the 3rd safety check 17 are all specially one-way valve.The apparent availability of this kind of one-way valve is large, and buying is convenient, and purchase cost is lower, and the user cost in whole oil-break loop can be made to be able to corresponding reduction.
Certainly, above-mentioned first safety check 15, second safety check 16 and the 3rd safety check 17 are all specially one-way valve and are only preferred version, it is not limited to the one-way valve shown in figure, as long as can meet the actual use needs in described hydraulic power unit oil supply system oil-break loop.
On the other hand, the first selector valve 12 and the second selector valve 14 are all specially two-position four-way solenoid directional control valve.It should be pointed out that this first selector valve 12 and the second selector valve 14 are not limited to the two-position four-way solenoid directional control valve shown in figure, as long as the actual use needs in described hydraulic power unit oil supply system oil-break loop can be met.
Please continue to refer to Fig. 1.In a specific embodiment, hydraulic power unit oil supply system provided by the present invention, comprise the fuel tank 33, oil feed pump 32, accumulator 34 and the working connection 31 that cooperatively interact, working connection 31 and be communicated with oil-break loop between oil feed pump 32, fuel tank 33 and accumulator 34, and described oil-break loop is specially the hydraulic power unit oil supply system oil-break loop shown in Fig. 1.Described hydraulic power unit oil supply system can disconnect where necessary fast.
In summary, the oil-break loop provided in the present invention, for hydraulic power unit oil supply system, comprise the Pilot operated check valve and the first selector valve that cooperatively interact, the fuel supply chamber of described Pilot operated check valve is connected with oil supply system working connection, and is communicated with the first main road between the fuel supply chamber of described Pilot operated check valve and the oil feed pump of oil supply system; Be communicated with the first branch road between described first main road and oil supply system working connection, described first selector valve is specifically arranged on described first branch road, and is communicated with the second branch road between described first selector valve and the control chamber of described Pilot operated check valve; The second main road is communicated with between the fuel tank of described first selector valve and oil supply system, described first main road and described second main road are connected with oil supply system accumulator respectively, be communicated with the 3rd branch road between described first main road and described second main road, and described 3rd branch road is provided with electromagnetic relief valve; Be communicated with the 4th branch road between described first main road and fuel tank, and described 4th branch road is provided with the second selector valve.In working procedure, when under oil supply system normal operating condition, described first selector valve and described second selector valve are all in left end station, the a part of high-voltage oil liquid exported from oil feed pump enters oil supply system working connection via after described first main road respectively by the fuel supply chamber of described first branch road and described Pilot operated check valve, and another part high-voltage oil liquid enters in accumulator by described first main road, when oil supply system working connection occurs that the emergency case such as leakage of oil need emergency cut-off oil feed line, oil feed pump quits work, described first selector valve and described second selector valve are all converted to right-hand member station, now high-voltage oil liquid enters in the control chamber of described Pilot operated check valve via described first switching valve, make the spool conversion station of described Pilot operated check valve and cut off being communicated with between its fuel supply chamber with oil supply system working connection, fluid in fluid in accumulator and each pipeline is respectively via described 3rd branch road, described second main road and described 4th branch road are back in fuel tank, thus off-load operation is completed while guarantee fast shut-off oil circuit.
In addition, the hydraulic power unit oil supply system applying above-mentioned oil-break loop provided by the invention, comprise the fuel tank, oil feed pump, accumulator and the working connection that cooperatively interact, described working connection and be communicated with oil-break loop between described oil feed pump, described fuel tank and described accumulator, and described oil-break loop is specially the oil-break loop described in above each embodiment.Described hydraulic power unit oil supply system can disconnect where necessary fast.
Above oil-break loop provided by the present invention and the hydraulic power unit oil supply system that applies this oil-break loop are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.

Claims (5)

1. an oil-break loop, for hydraulic power unit oil supply system, it is characterized in that: comprise the Pilot operated check valve and the first selector valve that cooperatively interact, the fuel supply chamber of described Pilot operated check valve is connected with oil supply system working connection, and is communicated with the first main road between the fuel supply chamber of described Pilot operated check valve and the oil feed pump of oil supply system;
Be communicated with the first branch road between described first main road and oil supply system working connection, described first selector valve is specifically arranged on described first branch road, and is communicated with the second branch road between described first selector valve and the control chamber of described Pilot operated check valve;
The second main road is communicated with between the fuel tank of described first selector valve and oil supply system, described first main road and described second main road are connected with oil supply system accumulator respectively, be communicated with the 3rd branch road between described first main road and described second main road, and described 3rd branch road is provided with electromagnetic relief valve;
Be communicated with the 4th branch road between described first main road and fuel tank, and described 4th branch road is provided with the second selector valve.
2. oil-break loop as claimed in claim 1, it is characterized in that: described first main road is provided with the first safety check, and described first safety check is specifically positioned at the upstream of described first main road and described 4th branch road joint;
Described second main road is provided with the second safety check, and described second safety check is specifically positioned at the downstream of described first selector valve;
Described 3rd branch road is provided with the 3rd safety check, and described 3rd safety check is specifically positioned at the downstream of described electromagnetic relief valve.
3. oil-break loop as claimed in claim 2, is characterized in that: described first safety check, described second safety check and described 3rd safety check are all specially one-way valve.
4. oil-break loop as claimed any one in claims 1 to 3, is characterized in that: described first selector valve and described second selector valve are all specially two-position four-way solenoid directional control valve.
5. a hydraulic power unit oil supply system, comprise the fuel tank, oil feed pump, accumulator and the working connection that cooperatively interact, it is characterized in that: described working connection and be communicated with oil-break loop between described oil feed pump, described fuel tank and described accumulator, and described oil-break loop is specially the oil-break loop according to any one of Claims 1-4.
CN201210362100.XA 2012-09-25 2012-09-25 Oil supply system of hydraulic pump station and oil interruption loop of oil supply system Active CN102829028B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632737B (en) * 2014-12-30 2017-01-25 大连维乐液压制造有限公司 Flying shear movable hydraulic station
CN105156370B (en) * 2015-09-21 2017-02-01 中国建筑股份有限公司 Hydraulic source for testing system
CN106122124B (en) * 2016-08-12 2018-10-26 中色科技股份有限公司 Stretching-machine hydraulic power unit oil supply system

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US5048644A (en) * 1987-11-04 1991-09-17 Kone Oy Method for improving the performance of a motor controlled hydraulic elevator
CN2725603Y (en) * 2004-09-23 2005-09-14 贵州枫阳液压有限责任公司 Tower crane hydraulic pump station
CN201083213Y (en) * 2007-08-01 2008-07-09 爱环吴世(苏州)环保有限公司 Super-high-pressure hydraulic pump station
CN201155504Y (en) * 2008-01-22 2008-11-26 山东法因数控机械股份有限公司 Pressure, flow quantity adjustable oil supply loop
CN102442528A (en) * 2011-09-19 2012-05-09 大连维乐液压制造有限公司 Hydraulic station for feeding trolley
CN202811664U (en) * 2012-09-25 2013-03-20 莱芜钢铁集团有限公司 Oil supply system of hydraulic pump station and oil cutoff circuit thereof

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Publication number Priority date Publication date Assignee Title
JP2562644B2 (en) * 1988-01-30 1996-12-11 株式会社小松製作所 Boom energy regenerator for hydraulic excavator
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048644A (en) * 1987-11-04 1991-09-17 Kone Oy Method for improving the performance of a motor controlled hydraulic elevator
CN2725603Y (en) * 2004-09-23 2005-09-14 贵州枫阳液压有限责任公司 Tower crane hydraulic pump station
CN201083213Y (en) * 2007-08-01 2008-07-09 爱环吴世(苏州)环保有限公司 Super-high-pressure hydraulic pump station
CN201155504Y (en) * 2008-01-22 2008-11-26 山东法因数控机械股份有限公司 Pressure, flow quantity adjustable oil supply loop
CN102442528A (en) * 2011-09-19 2012-05-09 大连维乐液压制造有限公司 Hydraulic station for feeding trolley
CN202811664U (en) * 2012-09-25 2013-03-20 莱芜钢铁集团有限公司 Oil supply system of hydraulic pump station and oil cutoff circuit thereof

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