CN102418719A - Energy-saving hydraulic station - Google Patents

Energy-saving hydraulic station Download PDF

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Publication number
CN102418719A
CN102418719A CN2012100015135A CN201210001513A CN102418719A CN 102418719 A CN102418719 A CN 102418719A CN 2012100015135 A CN2012100015135 A CN 2012100015135A CN 201210001513 A CN201210001513 A CN 201210001513A CN 102418719 A CN102418719 A CN 102418719A
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CN
China
Prior art keywords
oil
pressure
low pressure
low
valve
Prior art date
Application number
CN2012100015135A
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Chinese (zh)
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CN102418719B (en
Inventor
胡士忠
Original Assignee
蚌埠市淮海压铸机有限责任公司
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Priority to CN201210001513.5A priority Critical patent/CN102418719B/en
Publication of CN102418719A publication Critical patent/CN102418719A/en
Application granted granted Critical
Publication of CN102418719B publication Critical patent/CN102418719B/en

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Abstract

The invention discloses an energy-saving hydraulic station, which comprises a low-pressure oil pump and a high-pressure oil pump, wherein the low-pressure oil pump and the high-pressure oil pump are connected with a motor; an oil discharge outlet of the high-pressure oil pump is connected with an oil supply pipeline; an oil discharge outlet of the low-pressure oil pump is connected with an oil return pipeline communicated with an oil tank through an unloading loop, and is connected with a low-pressure energy storage device through a first one-way valve; the low-pressure energy storage device is connected with the oil supply pipeline through a control loop and a second one-way valve; the motor is started, the low-pressure oil pump and the high-pressure oil pump start supplying oil to a system; when the pressure of the system is increased to the rated pressure of the low-pressure oil pump, the low-pressure oil pump supplies the oil to the low-pressure energy storage device, the low-pressure energy storage device accumulates energy, and the high-pressure oil pump separately supplies the oil to the system; when the pressure of the low-pressure energy storage device is equal to the rated pressure of the low-pressure oil pump, the low-pressure oil pump unloads; and when the low-pressure energy storage device is required to be used, the low-pressure energy storage device and the oil supply pipeline are communicated by releasing the control loop.

Description

The energy-conserving hydraulic station
Technical field
The present invention relates to the hydraulic station in the hydraulic system of hydraulic equipment.
Background technique
Hydraulic station in the hydraulic system of existing one type of hydraulic equipment mainly is made up of low pressure fuel pump, high pressure oil pump, motor, fuel tank, two-way plug-in valve, relief circuit etc.; This hydraulic station at work; When system pressure rises to the rated pressure of low pressure fuel pump; Low pressure fuel pump is given system's fuel feeding through the relief circuit off-load separately by high pressure oil pump.The deficiency that existing this hydraulic station exists is: low pressure fuel pump is not utilized preferably, and the motor power waste is bigger; Power to load oil hydraulic cylinder in the hydraulic system is provided is insufficient.
Summary of the invention
The object of the present invention is to provide a kind of energy-conserving hydraulic station, the low pressure fuel pump of this hydraulic station can be fully utilized, and then can make the power of motor reduce, and sufficient power can be provided the oil hydraulic cylinder in the hydraulic system.
For realizing above-mentioned purpose; The present invention adopts following scheme: the energy-conserving hydraulic station; Have low pressure fuel pump and high pressure oil pump, low pressure fuel pump and high pressure oil pump connect with motor, and the oil drain out and the oil feed line of high pressure oil pump join; The oil drain out of low pressure fuel pump joins through two-way plug-in valve and oil feed line; The oil drain out of low pressure fuel pump joins through the return line of low pressure relief circuit and logical fuel tank, and the oil drain out of low pressure fuel pump joins through first one-way valve and low pressure accumulator, and the oil outlet of low pressure accumulator joins through discharging the control loop and second one-way valve and oil feed line.
Visible by such scheme, starting electrical machinery, low pressure fuel pump and high pressure oil pump begin to boost and pass through oil feed line jointly to system's fuel feeding; When system pressure rose to the rated pressure of low pressure fuel pump, two-way plug-in valve was closed, and low pressure fuel pump is to the low pressure accumulator fuel feeding; Carry out accumulation of energy by low pressure accumulator; High pressure oil pump is then given system's fuel feeding separately, and when the rated pressure of the pressure of low pressure accumulator and low pressure fuel pump reached balance, low pressure fuel pump passed through low pressure relief circuit off-load; When needs use low pressure accumulator, low pressure accumulator and oil feed line are connected by discharging control loop.
This use new structure is reasonable, reliable performance, and it can make that low pressure fuel pump is fully utilized, and then reduces the power consumption of motor, and is energy-conservation to realize; It can improve the movement speed of each load oil hydraulic cylinder, and then increase work efficiency and quality of processing for system provides more sufficient power.
Description of drawings
Accompanying drawing is the structural representation of one embodiment of the invention.
Embodiment
Further specify the present invention below in conjunction with embodiment and accompanying drawing.
Referring to accompanying drawing
Energy-conserving hydraulic provided by the invention station has low pressure fuel pump 2 and high pressure oil pump 1; Low pressure fuel pump 2 connects with motor 3 with high pressure oil pump 1; The oil drain out of high pressure oil pump 1 and oil feed line 16 join; The oil drain out of low pressure fuel pump 2 joins through two-way plug-in valve 14 and oil feed line 16, and the oil drain out of low pressure fuel pump 2 joins through the return line 17 of low pressure relief circuit and logical fuel tank 7.The low pressure relief circuit is connected to form by damped type two-way plug-in valve 12, pilot operated compound relief valve 11, two position four-way solenoid valves 10.Be connected to oil pressure gauge 13 between low pressure fuel pump 2 and low pressure relief circuit.
The oil drain out of low pressure fuel pump 2 joins with low pressure accumulator 5 through first one-way valve 4, and the oil outlet of low pressure accumulator 5 joins through discharging the control loop and second one-way valve 8 and oil feed line 16.Discharge control loop and have two-way plug-in valve 6 and two position four-way solenoid valves 9; Two-way plug-in valve 6 and two position four-way solenoid valves 9 join; The return opening of two position four-way solenoid valves 9 and fuel tank 7 join; The filler opening of the oil outlet of low pressure accumulator 5 and two-way plug-in valve 6 joins, and the oil outlet of two-way plug-in valve 6 joins with oil feed line 16 through second one-way valve 8, between oil feed line 14 and return line 15, is connected to pilot operated compound relief valve 15.
Visible by accompanying drawing, starting electrical machinery 3, low pressure fuel pump 2 begin to boost with high pressure oil pump 1 and jointly to oil feed line 16 fuel feeding; And through oil feed line 16 and three position four-way electromagnetic valve 18 to the hydraulic system fuel feeding; When system pressure rose to the rated pressure of low pressure fuel pump 2, two-way plug-in valve 14 was closed, and low pressure fuel pump 2 is to low pressure accumulator 5 fuel feeding; Carry out accumulation of energy by low pressure accumulator 5,1 of high pressure oil pump is given system's fuel feeding separately; When the rated pressure of the pressure of low pressure accumulator 5 and low pressure fuel pump 2 reached balance, low pressure fuel pump was through low pressure relief circuit off-load; When needs use accumulator 5, two position four-way solenoid valves 9 and fuel tank 7 to be connected, the oil outlet of two-way plug-in valve 6 is opened, and low pressure accumulator 5 is connected with oil feed line 16.In addition, after the oil hydraulic cylinder motion of load in the system puts in place, the system delay outage, three position four-way electromagnetic valve 18 is closed, and pilot operated compound relief valve 15,11 is opened, and whole hydraulic system off-load when next one action beginning, repeats above-mentioned cyclic process.
This hydraulic station mesolow accumulator setting, can reach following good effect:
1, identical down at equipment tonnage, can reduce the power of motor, to realize energy-conservation 30 ~ 50%;
2, after low pressure accumulator discharged, it can improve the movement speed of each load oil hydraulic cylinder for system provides more sufficient power.
In addition, this hydraulic station is particularly useful in the hydraulic system of die casting machine.This hydraulic station is used for the hydraulic system of die casting machine, when slow shot provides power, can slow shot speed be improved by low pressure accumulator; Low pressure accumulator discharges after the raising of slow shot speed, can improve work efficiency first, second helps the raising of quality of die casting; Simultaneously; Metal liquid was shortened by the time that injection chamber gets in the mold cavity, reduce the difference variation of metal liquid, and then can suitably reduce the temperature of metal liquid; Can reduce the consumption of processing metal liquid fuel thus, reach the effect of energy-saving and emission-reduction.

Claims (3)

1. energy-conserving hydraulic station; Have low pressure fuel pump (2) and high pressure oil pump (1); Low pressure fuel pump (2) and high pressure oil pump (1) connect with motor (3); The oil drain out of high pressure oil pump (1) and oil feed line (16) join; The oil drain out of low pressure fuel pump (2) joins through two-way plug-in valve (14) and oil feed line (16); It is characterized in that: the oil drain out of low pressure fuel pump (2) joins through the return line (17) of low pressure relief circuit and logical fuel tank (7), and the oil drain out of low pressure fuel pump (2) joins through first one-way valve (4) and low pressure accumulator (5), and the oil outlet of low pressure accumulator (5) joins with oil feed line (16) through discharging control loop and second one-way valve (8).
2. energy-conserving hydraulic according to claim 1 station is characterized in that: the low pressure relief circuit is connected to form by damped type two-way plug-in valve (12), pilot operated compound relief valve (11), two position four-way solenoid valves (10).
3. energy-conserving hydraulic according to claim 1 station; It is characterized in that: discharge control loop and have two-way plug-in valve (6) and two position four-way solenoid valves (9); Two-way plug-in valve (6) joins with two position four-way solenoid valves (9); The return opening of two position four-way solenoid valves (9) and fuel tank (7) join; The filler opening of the oil outlet of low pressure accumulator (5) and two-way plug-in valve (6) joins, and the oil outlet of two-way plug-in valve (6) joins through second one-way valve (8) and oil feed line (16), between oil feed line (16) and return line (17), is connected to pilot operated compound relief valve (15).
CN201210001513.5A 2012-01-05 2012-01-05 Energy-saving hydraulic station CN102418719B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210001513.5A CN102418719B (en) 2012-01-05 2012-01-05 Energy-saving hydraulic station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210001513.5A CN102418719B (en) 2012-01-05 2012-01-05 Energy-saving hydraulic station

Publications (2)

Publication Number Publication Date
CN102418719A true CN102418719A (en) 2012-04-18
CN102418719B CN102418719B (en) 2015-06-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966634A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Hydraulic pump station energy saving method applicable to load pressure
CN102966636A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Hydraulic device energy saving method capable of effectively reducing starting large current
CN103423488A (en) * 2013-07-23 2013-12-04 武汉船用机械有限责任公司 Automatic tensioning valve set
CN104976170A (en) * 2015-07-15 2015-10-14 中冶华天南京工程技术有限公司 Hydraulic pump station with energy-saving buffering protection device
CN106246615A (en) * 2016-09-21 2016-12-21 武汉理工大学 A kind of high-pressure high-flow quickly responds hydraulic circuit
CN107842530A (en) * 2017-11-27 2018-03-27 南通锻压设备股份有限公司 A kind of hydraulic system of high speed drift

Citations (6)

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US20010035011A1 (en) * 1996-09-25 2001-11-01 Komatsu Ltd. Pressurized fluid recovery/reutilization system
CN201170219Y (en) * 2008-02-20 2008-12-24 山东法因数控机械股份有限公司 Punched hole power hydraulic system of flat plate sinker drill compound machine
CN201606195U (en) * 2009-12-30 2010-10-13 江苏苏亚机电制造有限公司 Digital intelligent braking system of MW-level wind generating set
CN201659239U (en) * 2009-12-09 2010-12-01 安阳锻压机械工业有限公司 Fast spring rebound device of forging hydraulic machine
CN201679802U (en) * 2010-06-01 2010-12-22 湖南山河智能机械股份有限公司 Energy recovery system of hydraulic actuating mechanism
CN202431627U (en) * 2012-01-05 2012-09-12 蚌埠市淮海压铸机有限责任公司 Energy-saving hydraulic station

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010035011A1 (en) * 1996-09-25 2001-11-01 Komatsu Ltd. Pressurized fluid recovery/reutilization system
CN201170219Y (en) * 2008-02-20 2008-12-24 山东法因数控机械股份有限公司 Punched hole power hydraulic system of flat plate sinker drill compound machine
CN201659239U (en) * 2009-12-09 2010-12-01 安阳锻压机械工业有限公司 Fast spring rebound device of forging hydraulic machine
CN201606195U (en) * 2009-12-30 2010-10-13 江苏苏亚机电制造有限公司 Digital intelligent braking system of MW-level wind generating set
CN201679802U (en) * 2010-06-01 2010-12-22 湖南山河智能机械股份有限公司 Energy recovery system of hydraulic actuating mechanism
CN202431627U (en) * 2012-01-05 2012-09-12 蚌埠市淮海压铸机有限责任公司 Energy-saving hydraulic station

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966634A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Hydraulic pump station energy saving method applicable to load pressure
CN102966636A (en) * 2012-11-16 2013-03-13 无锡汇虹机械制造有限公司 Hydraulic device energy saving method capable of effectively reducing starting large current
CN103423488A (en) * 2013-07-23 2013-12-04 武汉船用机械有限责任公司 Automatic tensioning valve set
CN103423488B (en) * 2013-07-23 2016-02-17 武汉船用机械有限责任公司 A kind of auto-tensioning valve group
CN104976170A (en) * 2015-07-15 2015-10-14 中冶华天南京工程技术有限公司 Hydraulic pump station with energy-saving buffering protection device
CN106246615A (en) * 2016-09-21 2016-12-21 武汉理工大学 A kind of high-pressure high-flow quickly responds hydraulic circuit
CN106246615B (en) * 2016-09-21 2017-11-17 武汉理工大学 A kind of high-pressure high-flow quick response hydraulic circuit
CN107842530A (en) * 2017-11-27 2018-03-27 南通锻压设备股份有限公司 A kind of hydraulic system of high speed drift
CN107842530B (en) * 2017-11-27 2019-05-31 南通锻压设备如皋有限公司 A kind of hydraulic system of high speed formed punch

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