CN102418719B - Energy-saving hydraulic station - Google Patents
Energy-saving hydraulic station Download PDFInfo
- Publication number
- CN102418719B CN102418719B CN201210001513.5A CN201210001513A CN102418719B CN 102418719 B CN102418719 B CN 102418719B CN 201210001513 A CN201210001513 A CN 201210001513A CN 102418719 B CN102418719 B CN 102418719B
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- Prior art keywords
- oil
- low
- pressure
- valve
- low pressure
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- 239000000446 fuel Substances 0.000 claims description 41
- 239000002828 fuel tank Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract 7
- 239000007788 liquid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004512 die casting Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
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 an existing class hydraulic equipment is primarily of compositions such as low pressure fuel pump, high pressure oil pump, motor, fuel tank, two-way plug-in valve, relief circuits, this hydraulic station at work, when system pressure rises to the rated pressure of low pressure fuel pump, low pressure fuel pump, by relief circuit off-load, gives system fuel feeding separately by high pressure oil pump.The deficiency that existing this hydraulic station exists is: low pressure fuel pump is not utilized preferably, and motor power waste is larger; The power provided load oil hydraulic cylinder in hydraulic system is insufficient.
Summary of the invention
The object of the present invention is to provide a kind of energy-saving hydraulic station, the low pressure fuel pump of this hydraulic station can be fully utilized, and then can make the power reduction of motor, and can provide sufficient power to the oil hydraulic cylinder in hydraulic system.
For achieving the above object, the present invention adopts following scheme: energy-saving hydraulic station, there is low pressure fuel pump and high pressure oil pump, low pressure fuel pump and high pressure oil Pump and Electromotor connect, the oil drain out of high pressure oil pump connects with oil feed line, the oil drain out of low pressure fuel pump is connected with oil feed line by two-way plug-in valve, the oil drain out of low pressure fuel pump is connected by the return line of Low-pressure load discharge loop with logical fuel tank, the oil drain out of low pressure fuel pump is connected with low pressure accumulator by the first one-way valve, and the oil outlet of low pressure accumulator is connected with oil feed line by release control loop and the second one-way valve; Low-pressure load discharge loop is connected to form by damped type two-way plug-in valve, pilot operated compound relief valve, two position four-way solenoid valves; Release control loop has two-way plug-in valve and two position four-way solenoid valves, two-way plug-in valve connects with two position four-way solenoid valves, the return opening of two position four-way solenoid valves connects with fuel tank, the oil outlet of low pressure accumulator connects with the filler opening of two-way plug-in valve, the oil outlet of two-way plug-in valve is connected with oil feed line by the second one-way valve, between oil feed line and return line, be connected to pilot operated compound relief valve.
From such scheme, starting electrical machinery, low pressure fuel pump and high pressure oil pump start boosting and common by oil feed line to system fuel feeding, when system pressure rises to the rated pressure of low pressure fuel pump, two-way plug-in valve is closed, low pressure fuel pump is to low pressure accumulator fuel feeding, accumulation of energy is carried out by low pressure accumulator, high pressure oil pump then gives system fuel feeding separately, when the pressure of low pressure accumulator and the rated pressure of low pressure fuel pump reach balance, low pressure fuel pump is by the off-load of Low-pressure load discharge loop, when needs use low pressure accumulator, by release control loop, low pressure accumulator and oil feed line are connected.
This use new structure is reasonable, reliable performance, and it can make low pressure fuel pump be fully utilized, and then reduces the power consumption of motor, energy-conservation to realize; It can provide more sufficient power for system, the movement speed of each load oil hydraulic cylinder is improved, and then increases work efficiency and quality of processing.
Accompanying drawing explanation
Accompanying drawing is the structural representation of one embodiment of the invention.
Embodiment
The present invention is further illustrated below in conjunction with embodiment and accompanying drawing.
See accompanying drawing
Energy-saving hydraulic station provided by the invention has 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 connects with oil feed line 16, the oil drain out of low pressure fuel pump 2 is connected with oil feed line 16 by two-way plug-in valve 14, and the oil drain out of low pressure fuel pump 2 is connected by the return line 17 of Low-pressure load discharge loop with logical fuel tank 7.Low-pressure load discharge loop is connected to form by damped type two-way plug-in valve 12, pilot operated compound relief valve 11, two position four-way solenoid valve 10.Oil pressure gauge 13 is connected between low pressure fuel pump 2 and Low-pressure load discharge loop.
The oil drain out of low pressure fuel pump 2 is connected with low pressure accumulator 5 by the first one-way valve 4, and the oil outlet of low pressure accumulator 5 is connected with oil feed line 16 by release control loop and the second one-way valve 8.Release control loop has two-way plug-in valve 6 and two position four-way solenoid valves 9, two-way plug-in valve 6 connects with two position four-way solenoid valves 9, the return opening of two position four-way solenoid valves 9 connects with fuel tank 7, the oil outlet of low pressure accumulator 5 connects with the filler opening of two-way plug-in valve 6, the oil outlet of two-way plug-in valve 6 is connected with oil feed line 16 by the second one-way valve 8, is connected to pilot operated compound relief valve 15 between oil feed line 14 and return line 15.
From accompanying drawing, starting electrical machinery 3, low pressure fuel pump 2 and high pressure oil pump 1 start boosting and common to oil feed line 16 fuel feeding, and by oil feed line 16 and three position four-way electromagnetic valve 18 to hydraulic system fuel feeding, when system pressure rises to the rated pressure of low pressure fuel pump 2, two-way plug-in valve 14 is 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, high pressure oil pump 1 gives system fuel feeding separately; When the pressure of low pressure accumulator 5 and the rated pressure of low pressure fuel pump 2 reach balance, low pressure fuel pump is by the off-load of Low-pressure load discharge loop; When needs use accumulator 5, connected with fuel tank 7 by two position four-way solenoid valves 9, the oil outlet of two-way plug-in valve 6 is opened, and low pressure accumulator 5 and oil feed line 16 are connected.In addition, after in system, the hydraulic cylinder of load puts in place, system delay power-off, 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 action starts, repeats above-mentioned cyclic process.
This hydraulic station mesolow accumulator setting, following good effect can be reached:
1, under equipment tonnage is identical, the power of motor can be reduced, to realize energy-conservation 30 ~ 50%;
2, after low pressure accumulator release, it can provide more sufficient power for system, and the movement speed of each load oil hydraulic cylinder is improved.
In addition, this hydraulic station is particularly useful in the hydraulic system of die casting machine.This hydraulic station is used in the hydraulic system of die casting machine, when providing power by low pressure accumulator to slow shot, slow shot speed can be improved, after slow shot speed improves by low pressure accumulator release, work efficiency can be improved first, second the raising of quality of die casting is conducive to, simultaneously, metal liquid can be made by injection chamber to be entered time shorten in mold cavity, reduce the difference variation of metal liquid, and then suitably can reduce the temperature of metal liquid, the consumption of processing metal liquid fuel can be reduced thus, reach the effect of energy-saving and emission-reduction.
Claims (1)
1. energy-saving hydraulic station, there is 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) connects with oil feed line (16), the oil drain out of low pressure fuel pump (2) is connected with oil feed line (16) by two-way plug-in valve (14), it is characterized in that: the oil drain out of low pressure fuel pump (2) is connected with the return line (17) of logical fuel tank (7) by Low-pressure load discharge loop, the oil drain out of low pressure fuel pump (2) is connected with low pressure accumulator (5) by the first one-way valve (4), the oil outlet of low pressure accumulator (5) is connected with oil feed line (16) by release control loop and the second one-way valve (8), Low-pressure load discharge loop 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), release control loop has two-way plug-in valve (6) and two position four-way solenoid valves (9), two-way plug-in valve (6) connects with two position four-way solenoid valves (9), the return opening of two position four-way solenoid valves (9) connects with fuel tank (7), the oil outlet of low pressure accumulator (5) connects with the filler opening of two-way plug-in valve (6), the oil outlet of two-way plug-in valve (6) is connected with oil feed line (16) by the second one-way valve (8), is connected to pilot operated compound relief valve (15) between oil feed line (16) and return line (17).
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 CN102418719A (en) | 2012-04-18 |
| CN102418719B true CN102418719B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210001513.5A Active CN102418719B (en) | 2012-01-05 | 2012-01-05 | Energy-saving hydraulic station |
Country Status (1)
| Country | Link |
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| CN (1) | CN102418719B (en) |
Families Citing this family (6)
| 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 |
| 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 |
| CN104976170B (en) * | 2015-07-15 | 2017-05-10 | 中冶华天南京工程技术有限公司 | Hydraulic pump station with energy-saving buffering protection device |
| 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 |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6378301B2 (en) * | 1996-09-25 | 2002-04-30 | Komatsu Ltd. | Pressurized fluid recovery/reutilization system |
-
2012
- 2012-01-05 CN CN201210001513.5A patent/CN102418719B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102418719A (en) | 2012-04-18 |
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