CN102829028A - 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
CN102829028A
CN102829028A CN201210362100XA CN201210362100A CN102829028A CN 102829028 A CN102829028 A CN 102829028A CN 201210362100X A CN201210362100X A CN 201210362100XA CN 201210362100 A CN201210362100 A CN 201210362100A CN 102829028 A CN102829028 A CN 102829028A
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China
Prior art keywords
oil
oil supply
valve
main road
communicated
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CN201210362100XA
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Chinese (zh)
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CN102829028B (en
Inventor
孙时建
吴晓光
时元海
武强
亓晓涛
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莱芜钢铁集团有限公司
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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 the 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 the daily process of manufacture as a kind of comparatively common power source, and along with the continuing to increase of production intensity, people also have higher requirement to its usability.
In the present existing hydraulic power unit working procedure; Fuel delivery in its oil supply system is big, oil pressure is higher, when especially being furnished with accumulator in the system, if when occurring accident such as leakage of oil in its oil feed line; Owing to can't in time fast and effeciently cut off working connection; Cause a large amount of oil leaks, caused the serious waste of fluid, and caused severe bad influence to surrounding environment.
Therefore, how a cover loop system being provided, is the important technological problems that those skilled in the art need solve at present so that the hydraulic power unit oil supply system can be broken off where necessary fast.
Summary of the invention
The purpose of this invention is to provide a kind of oil-break loop, this oil-break loop can be broken off the hydraulic power unit oil supply system where necessary fast.Another object of the present invention provides a kind of hydraulic power unit oil supply system of using above-mentioned oil-break loop.
For solving the problems of the technologies described above; The present invention provides a kind of oil-break loop; Be used for the hydraulic power unit oil supply system; Comprise the Pilot operated check valve and first selector valve that cooperatively interact, the fuel supply chamber of said Pilot operated check valve is connected with the oil supply system working connection, and is communicated with first main road between the oil feed pump of the fuel supply chamber of said Pilot operated check valve and oil supply system;
Be communicated with first branch road between said first main road and oil supply system working connection, said first selector valve specifically is arranged on said first branch road, and is communicated with second branch road between the control chamber of said first selector valve and said Pilot operated check valve;
Be communicated with second main road between the fuel tank of said first selector valve and oil supply system; Said first main road and said second main road are connected with the oil supply system accumulator respectively; Be communicated with the 3rd branch road between said first main road and said second main road, and said the 3rd branch road is provided with electromagnetic relief valve;
Be communicated with the 4th branch road between said first main road and fuel tank, and said the 4th branch road is provided with second selector valve.
Preferably, said first main road is provided with first safety check, and said first safety check specifically is positioned at the upper reaches of said first main road and said the 4th branch road joint;
Said second main road is provided with second safety check, and said second safety check specifically is positioned at the downstream of said first selector valve;
Said the 3rd branch road is provided with the 3rd safety check, and said the 3rd safety check specifically is positioned at the downstream of said electromagnetic relief valve.
Preferably, said first safety check, said second safety check and said the 3rd safety check all are specially one-way valve.
Preferably, said first selector valve and said second selector valve all are specially the 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; Be communicated with the oil-break loop between said working connection and said oil feed pump, said fuel tank and said accumulator, and said oil-break loop is specially above-mentioned each described oil-break loop.
Above-mentioned background is technological relatively; Oil-break provided by the present invention loop; Be used for the hydraulic power unit oil supply system; Comprise the Pilot operated check valve and first selector valve that cooperatively interact, the fuel supply chamber of said Pilot operated check valve is connected with the oil supply system working connection, and is communicated with first main road between the oil feed pump of the fuel supply chamber of said Pilot operated check valve and oil supply system; Be communicated with first branch road between said first main road and oil supply system working connection, said first selector valve specifically is arranged on said first branch road, and is communicated with second branch road between the control chamber of said first selector valve and said Pilot operated check valve; Be communicated with second main road between the fuel tank of said first selector valve and oil supply system; Said first main road and said second main road are connected with the oil supply system accumulator respectively; Be communicated with the 3rd branch road between said first main road and said second main road, and said the 3rd branch road is provided with electromagnetic relief valve; Be communicated with the 4th branch road between said first main road and fuel tank, and said the 4th branch road is provided with second selector valve.In the working procedure; Under the oil supply system normal operating condition; Said first selector valve and said second selector valve all are in the left end station; Fuel supply chamber through said first branch road and said Pilot operated check valve gets into the oil supply system working connection respectively after a part of high-voltage oil liquid of oil feed pump output is via said first main road, and another part high-voltage oil liquid is through in said first main road entering accumulator; When occurring emergency case such as leakage of oil when the oil supply system working connection and needing the emergency cut-off oil feed line; Oil feed pump quits work; Said first selector valve and said second selector valve all are converted to the right-hand member station; This moment, high-voltage oil liquid got in the control chamber of said Pilot operated check valve via said first switching valve; Make said Pilot operated check valve spool conversion station and cut off being communicated with between its fuel supply chamber and oil supply system working connection, fluid and the fluid in each pipeline in the accumulator are back in the fuel tank via said the 3rd branch road, said second main road and said the 4th branch road respectively, operate thereby when guaranteeing the fast shut-off oil circuit, accomplish off-load.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The hydraulic power unit oil supply system that Fig. 1 is provided for a kind of embodiment of the present invention and the assembly structure schematic representation in oil-break loop thereof.
Embodiment
Core of the present invention provides a kind of oil-break loop, and this oil-break loop can be broken off the hydraulic power unit oil supply system where necessary fast; Simultaneously, a kind of hydraulic power unit oil supply system of using above-mentioned oil-break loop is provided.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1, the hydraulic power unit oil supply system that Fig. 1 is provided for a kind of embodiment of the present invention and the assembly structure schematic representation in oil-break loop thereof.
In embodiment; Oil-break provided by the present invention loop; Be used for the hydraulic power unit oil supply system; Comprise the Pilot operated check valve 11 and 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 32 of the oil feed pumps of the fuel supply chamber of Pilot operated check valve 11 and oil supply system are communicated with first main road 21; 31 of first main road 21 and oil supply system working connections are communicated with first branch road, 23, the first selector valves 12 and specifically are arranged on first branch road 23, and are communicated with second branch road 24 between the control chamber of first selector valve 12 and Pilot operated check valve 11; 33 of the fuel tanks of first selector valve 12 and oil supply system are communicated with second main road 22; First main road 21 and second main road 22 are connected with oil supply system accumulator 34 respectively; First main road 21 and 22 of second main roads are communicated with the 3rd branch road 25, and the 3rd branch road 25 is provided with electromagnetic relief valve 13; 33 of first main road 21 and fuel tanks are communicated with the 4th branch road 26, and the 4th branch road 26 is provided with second selector valve 14.In the working procedure; Under the oil supply system normal operating condition; First selector valve 12 and second selector valve 14 all are in the left end station; Fuel supply chamber through first branch road 23 and Pilot operated check valve 11 gets into oil supply system working connection 31 respectively after a part of high-voltage oil liquid of oil feed pump 32 output is via first main road 21, and another part high-voltage oil liquid gets in the accumulators 34 through first main road 21; When occurring emergency case such as leakage of oil when oil supply system working connection 31 and needing the emergency cut-off oil feed line; Oil feed pump 32 quits work; First selector valve 12 and second selector valve 14 all are converted to the right-hand member station; This moment, high-voltage oil liquid got in the control chamber of Pilot operated check valve 11 via first switching valve 12; Make Pilot operated check valve 11 spool conversion station and cut off being communicated with of its fuel supply chamber and 31 of oil supply system working connections, fluid in the accumulator 34 and the fluid in each pipeline are back in the fuel tank 33 via the 3rd branch road 25, second main road 22 and the 4th branch road 26 respectively, operate thereby when guaranteeing the fast shut-off oil circuit, accomplish off-load.
Further, first main road 21 is provided with first safety check 15, and first safety check 15 specifically is positioned at the upper reaches of first main road 21 and the 4th branch road 26 joints; Second main road 22 is provided with second safety check 16, and second safety check 16 specifically is positioned at the downstream of first selector valve 12; The 3rd branch road 25 is provided with the 3rd safety check 17, and the 3rd safety check 17 specifically is positioned at the downstream of electromagnetic relief valve 13.In the oil supply system running; First safety check 15, second safety check 16 and the 3rd the safety check 17 rationally fluid in the pilot line flow to; Effectively avoid because of the fluid adverse current causes structural damage to associated components such as pipeline or hydrovalves, thereby make the operation stability of whole oil supply system and Security be able to significantly improve.
More specifically, first safety check 15, second safety check 16 and the 3rd safety check 17 all are specially one-way valve.The apparent availability of this kind one-way valve is big, and buying is convenient, and purchase cost is lower, can make the user cost in whole oil-break loop be able to corresponding reduction.
Certainly; Above-mentioned first safety check 15, second safety check 16 and the 3rd safety check 17 all are specially one-way valve and are merely preferred version; It is not limited to the one-way valve shown in the figure, all can so long as can satisfy the actual use needs in said hydraulic power unit oil supply system oil-break loop.
On the other hand, first selector valve 12 and second selector valve 14 all are specially the two-position four-way solenoid directional control valve.Should be pointed out that this first selector valve 12 and second selector valve 14 are not limited to the two-position four-way solenoid directional control valve shown in the figure, all can so long as can satisfy the actual use needs in said hydraulic power unit oil supply system oil-break loop.
Please continue with reference to figure 1.In 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 oil feed pump 32, fuel tank 33 and 34 of accumulators are communicated with the oil-break loop, and said oil-break loop is specially the hydraulic power unit oil supply system oil-break loop shown in Fig. 1.Said hydraulic power unit oil supply system can be broken off where necessary fast.
To sum up can know; The oil-break loop that provides among the present invention; Be used for the hydraulic power unit oil supply system; Comprise the Pilot operated check valve and first selector valve that cooperatively interact, the fuel supply chamber of said Pilot operated check valve is connected with the oil supply system working connection, and is communicated with first main road between the oil feed pump of the fuel supply chamber of said Pilot operated check valve and oil supply system; Be communicated with first branch road between said first main road and oil supply system working connection, said first selector valve specifically is arranged on said first branch road, and is communicated with second branch road between the control chamber of said first selector valve and said Pilot operated check valve; Be communicated with second main road between the fuel tank of said first selector valve and oil supply system; Said first main road and said second main road are connected with the oil supply system accumulator respectively; Be communicated with the 3rd branch road between said first main road and said second main road, and said the 3rd branch road is provided with electromagnetic relief valve; Be communicated with the 4th branch road between said first main road and fuel tank, and said the 4th branch road is provided with second selector valve.In the working procedure; Under the oil supply system normal operating condition; Said first selector valve and said second selector valve all are in the left end station; Fuel supply chamber through said first branch road and said Pilot operated check valve gets into the oil supply system working connection respectively after a part of high-voltage oil liquid of oil feed pump output is via said first main road, and another part high-voltage oil liquid is through in said first main road entering accumulator; When occurring emergency case such as leakage of oil when the oil supply system working connection and needing the emergency cut-off oil feed line; Oil feed pump quits work; Said first selector valve and said second selector valve all are converted to the right-hand member station; This moment, high-voltage oil liquid got in the control chamber of said Pilot operated check valve via said first switching valve; Make said Pilot operated check valve spool conversion station and cut off being communicated with between its fuel supply chamber and oil supply system working connection, fluid and the fluid in each pipeline in the accumulator are back in the fuel tank via said the 3rd branch road, said second main road and said the 4th branch road respectively, operate thereby when guaranteeing the fast shut-off oil circuit, accomplish off-load.
In addition; The hydraulic power unit oil supply system of having used above-mentioned oil-break loop provided by the invention; Comprise the fuel tank, oil feed pump, accumulator and the working connection that cooperatively interact; Be communicated with the oil-break loop between said working connection and said oil feed pump, said fuel tank and said accumulator, and said oil-break loop is specially the oil-break loop described in above each embodiment.Said hydraulic power unit oil supply system can be broken off where necessary fast.
More than detailed introduction has been carried out in oil-break provided by the present invention loop and the hydraulic power unit oil supply system of having used this oil-break loop.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.

Claims (5)

1. oil-break loop; Be used for the hydraulic power unit oil supply system; It is characterized in that: comprise the Pilot operated check valve and first selector valve that cooperatively interact; The fuel supply chamber of said Pilot operated check valve is connected with the oil supply system working connection, and is communicated with first main road between the oil feed pump of the fuel supply chamber of said Pilot operated check valve and oil supply system;
Be communicated with first branch road between said first main road and oil supply system working connection, said first selector valve specifically is arranged on said first branch road, and is communicated with second branch road between the control chamber of said first selector valve and said Pilot operated check valve;
Be communicated with second main road between the fuel tank of said first selector valve and oil supply system; Said first main road and said second main road are connected with the oil supply system accumulator respectively; Be communicated with the 3rd branch road between said first main road and said second main road, and said the 3rd branch road is provided with electromagnetic relief valve;
Be communicated with the 4th branch road between said first main road and fuel tank, and said the 4th branch road is provided with second selector valve.
2. oil-break as claimed in claim 1 loop is characterized in that: said first main road is provided with first safety check, and said first safety check specifically is positioned at the upper reaches of said first main road and said the 4th branch road joint;
Said second main road is provided with second safety check, and said second safety check specifically is positioned at the downstream of said first selector valve;
Said the 3rd branch road is provided with the 3rd safety check, and said the 3rd safety check specifically is positioned at the downstream of said electromagnetic relief valve.
3. oil-break as claimed in claim 2 loop is characterized in that: said first safety check, said second safety check and said the 3rd safety check all are specially one-way valve.
4. like each described oil-break loop in the claim 1 to 3, it is characterized in that: said first selector valve and said second selector valve all are specially the two-position four-way solenoid directional control valve.
5. 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: be communicated with the oil-break loop between said working connection and said oil feed pump, said fuel tank and said accumulator, and said oil-break loop is specially like each described oil-break loop in the claim 1 to 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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CN102829028B CN102829028B (en) 2015-03-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632737A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Flying shear movable hydraulic station
CN105156370A (en) * 2015-09-21 2015-12-16 中国建筑股份有限公司 Hydraulic source for testing system
CN106122124A (en) * 2016-08-12 2016-11-16 中色科技股份有限公司 Stretching-machine hydraulic power unit oil supply system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01199001A (en) * 1988-01-30 1989-08-10 Komatsu Ltd Position energy recovering activating device for hydraulic excavator
US5048644A (en) * 1987-11-04 1991-09-17 Kone Oy Method for improving the performance of a motor controlled hydraulic elevator
WO2003101881A1 (en) * 2002-05-31 2003-12-11 Xuanzhe Hu The control method and device of a hydraulic apparatus whose cylinder is able to come to a desired work position iteratively
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

Patent Citations (8)

* 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
JPH01199001A (en) * 1988-01-30 1989-08-10 Komatsu Ltd Position energy recovering activating device for hydraulic excavator
WO2003101881A1 (en) * 2002-05-31 2003-12-11 Xuanzhe Hu The control method and device of a hydraulic apparatus whose cylinder is able to come to a desired work position iteratively
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632737A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Flying shear movable hydraulic station
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
CN105156370A (en) * 2015-09-21 2015-12-16 中国建筑股份有限公司 Hydraulic source for testing system
CN106122124A (en) * 2016-08-12 2016-11-16 中色科技股份有限公司 Stretching-machine hydraulic power unit oil supply system

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