CN1112521C - Power-saving energy-accumulating hydraulic power system - Google Patents
Power-saving energy-accumulating hydraulic power system Download PDFInfo
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- CN1112521C CN1112521C CN 01127928 CN01127928A CN1112521C CN 1112521 C CN1112521 C CN 1112521C CN 01127928 CN01127928 CN 01127928 CN 01127928 A CN01127928 A CN 01127928A CN 1112521 C CN1112521 C CN 1112521C
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Abstract
The present invention relates to an energy saving and energy storage type hydraulic power system which provides power for a hydraulic executive device and controls the hydraulic executive device. The present invention is composed of an energy accumulator, a pressure relay, a pressure meter, a stop valve, a shuttle valve, an oil pump, a motor, a hydraulic control reversing valve, an overflow valve, a manual pump and a hydraulic control one-way valve, wherein one end of the overflow valve is communicated with an oil tank, and simultaneously is connected with one end of the manual pump, one end of the energy accumulator, one end of the shuttle valve and an outlet of the hydraulic control reversing valve; the other end of the overflow valve is connected with the other outlet of the hydraulic control reversing valve, and is simultaneously connected with the other end of the manual pump; two inlets of the hydraulic control reversing valve are respectively connected with an inlet and an outlet of the oil pump, both ends of the hydraulic control one-way valve and both of the two ends of the shuttle valve in parallel, and are simultaneously and respectively connected with both ends of the hydraulic power device. As the energy accumulator is always communicated with a pressure oil cavity, an oil suction opening of the oil pump is always communicated with the oil tank, and a pressure oil opening of the oil pump is always communicated with the overflow valve, the present invention has the characteristics of reduction of energy loss, smooth and reasonable operation, safe opening of the system, etc.
Description
A kind of power-saving energy-accumulating hydraulic power system that hydraulic pressure execution device is provided power and control.
Hydraulic pressure installation is the power plant that multiple industrial class is widely used.During hydraulic pressure execution device work, need provide hydraulic power by hydraulic power system.
In the past hydraulic power system Placement such as documents accompanying drawing show that its working method is as follows:
Motor 3 forward rotation drive oil pump 1 by coupling 2 and rotate, the inlet port of oil pump passes through one-way valve 5.1 from the fuel tank oil suction, the pressure oil that oil pump is discharged arrives the A point through one-way valve 5.3PA point, 13.1, enters the cavity of resorption of hydraulic actuator 6, promotes the piston stroking upward of hydraulic actuator.After the oil of hydraulic actuator 6 epicoeles is discharged, through B point, Pilot operated check valve 12.2, and the T point flow back to fuel tank.The unlatching of Pilot operated check valve 12.2 is to be controlled by the pressure oil of PA to open.Oil pump also holds oil to accumulator 11 in the time of hydraulic actuator 6 cavity of resorption fuel feeding, the pressure of accumulator is shown by pressure gauge 8, when pressure reached the setting value of pressure relay 9, moving the doing of pressure relay 9 were sent electrical signal, controlled Oil pump electrical machinery and quit work and send cue to the operator.After oil pump quit work, the pressure of hydraulic actuator 6 cavity of resorptions was kept by accumulator 11.
When motor 3 backward rotation, oil pump passes through one-way valve 5.2 from the fuel tank oil suction, the pressure oil that oil pump is discharged arrives the B point through one-way valve 13.2, enter the epicoele of hydraulic actuator 6, promote the descent of piston of hydraulic actuator 6, after the oil of hydraulic actuator 6 cavity of resorptions is discharged through A point, Pilot operated check valve 12.1, and the T point flow back to fuel tank.The unlatching of Pilot operated check valve 12.1 is to be controlled by the pressure oil that PB is ordered to open.The pressure oil of accumulator 11 storages simultaneously also flows back to fuel tank via 12.1.Relief valve 4.1 and 4.2 pairs 6 cavity of resorption and the pressure of epicoele play the safety protection effect.
When oil pump 1 can't be worked owing to motor 3 has a power failure, hand oil pump 10 can be to the cavity of resorption fuel feeding of hydraulic actuator 6, and the pressure oil of one-way valve 5.3 protection hand oil pumps 10 does not flow to oil pump.
Hydraulic power system shortcoming before above-mentioned is:
1, accumulator 11, pressure gauge 8 can not work to the epicoele of hydraulic actuator 6 with pressure relay 9.
2, when the cavity of resorption oil extraction of hydraulic actuator 6, accumulator 11 also oil extraction causes energy loss.
3, hand pump 10 can only be carried out 6 cavity of resorption fuel feeding to hydraulic pressure.
4, element is many.
The objective of the invention is to make its quantity that not only can reduce element by a kind of design of simplified system, and working procedure is reasonable, smooth and easy, more can have the characteristics of energy-conservation impairment.
The present invention is by accumulator, pressure relay, pressure gauge, stop valve, shuttle valve, oil pump, motor, pilot operated directional control valve, relief valve, hand pump, Pilot operated check valve is formed, relief valve one end communicates with fuel tank, while and hand pump one end, accumulator one end, shuttle valve one end and liquid controlled reversing valve outlet port join, another outlet of the other end and pilot operated directional control valve is joined, join with the hand pump the other end simultaneously, two inlets of pilot operated directional control valve are imported and exported with oil pump respectively, and the two ends of Pilot operated check valve and the two ends of shuttle valve also connect, connect the two ends of hydraulic power unit simultaneously respectively, accumulator and hand pump are serially connected with stop valve between the relief valve, be connected to pressure relay and pressure gauge between accumulator and the stop valve, join with the shuttle valve control point simultaneously, all connect oil pipe and are high pressure resistant pipe.
Fig. 1 is a system of the present invention connection diagram, also is specification digest figure, and Fig. 2 is the pilot operated directional control valve structural representation, and Fig. 3 is the shuttle valve structural representation.Each label is respectively among the figure: 1, hydraulic actuator, 2, accumulator, 3, pressure relay, 4, pressure gauge, 5, shuttle valve, 6, oil pump, 7, motor, 8, pilot operated directional control valve, 9, relief valve, 10, fuel tank, 11, hand pump, 12, Pilot operated check valve, 13, stop valve, A, the B tubing interface, C, D, E, F, G, H, I, M, N, O, L, U is a contact, 14, valve body, 15, oil pocket, 16, passage, 17, spool, 18, oil pocket, 19, passage, 20, oil pocket, 21,22,23, oil duct, 24, valve body, 25, oil duct, 26, oil duct, 27, spool, 28, oil duct, 29,31, axle, 30,32,33,34, oil duct, 35, oil pocket.
The course of work of the present invention is as follows:
Motor 7 forward rotation drive oil pump by shaft coupling and rotate, and oil pump is from the G point Oil suction, the oil extraction of F point, one road pressure oil flows to the H point and acts on by oil circuit control The pilot operated directional control valve left end moves to right change-over valve core, and M and L are connected, N with O connects, and H point and overflow valve (or unloader) are connected, and I point and O point are connected Communicate with fuel tank by the U point. Another road pressure oil arrives the C point through hydraulic control one-way valve Communicated by A point and the left chamber of hydraulic actuator again, make the actuator piston move to right the right side The oil in chamber was order the D point from B and was flowed to G point, the You Yilu that G is ordered via hydraulic control one-way valve Communicate with the oil pump inlet port, another road and fuel tank communicate. Oil pump flows to the pressure that C is ordered Power oil one tunnel removes the A point, and another road flows to shuttle valve, and C and E are communicated. D and C, 2 of E are obstructed, and the E point is connected with accumulator, Pressure gauge, and pressure switch holds Can save pressure oil by device, Pressure gauge shows pressure oil pressure, and pressure switch is sent out Go out signal, the job control of oil pump has two kinds, and one is posted a letter by pressure switch Number control oil pump motor quits work. Its two pressure oil by E passes through oil circuit control Control the unloader off-load, make oil pump no-load running.
When motor has a power failure, available hand pump is to the oil circuit fuel feeding, when needs during to left side oil circuit fuel feeding, manually promote pilot operated directional control valve left side button, spool is moved to right, L and M are communicated, N and O communicate, and behind the manual reverse of direction, the working position of spool is kept by control oil, when needs during, manually promote pilot operated directional control valve the right button to the right oil circuit fuel feeding.
When needs move repairing to system, open stop valve, pressure oil flows back to fuel tank.
Advantage of the present invention is as follows:
1, accumulator always communicates with pressure oil cavity, and energy loss all can pressurize be reduced in two chambeies.
2, the inlet port of oil pump always communicates with fuel tank, makes oil circuit work smooth and easy rationally.
3, the pressure hydraulic fluid port of oil pump always communicates with relief valve, can fully guarantee system works safety.
Another kind of scheme of the present invention is that the relief valve in the accompanying drawing is changed to unloading valve.When using unloading valve, the control oil pipe of unloading valve is connected on the stop valve front end.
Now in conjunction with the accompanying drawings the utility model is described further.
Embodiment: accumulator 2 is the NOX-1.6/200 type, pressure relay 3 is the HED type, pressure gauge is the Y-100 type, shuttle valve is a non-standard equipment, its structure such as Fig. 3 show, oil pocket is three, with passage 16,19 are chained together, spool 17 is the shuttle valve of two ends band tapering, be arranged in the middle oil pocket 18, it is external that each oil pocket respectively has an oil duct to lead to, Pilot operated check valve 12 is the SL10 type, oil pump 6 is the 2-5mcY type, pilot operated directional control valve 8 is a non-standard equipment, its structure such as accompanying drawing 2 show, oil pocket is 5 oil-in chamber, connect with passage between the oil-in chamber, spool 27 is established 6 ring platforms with oil pocket internal channel internal diameter Spielpassung for how desk-top major axis is, and valve 27 is arranged in the oil pocket 35, the oil-in chamber of both sides connects by oil duct 26, the oil-in chamber of two inboards is respectively by oil duct 25,28 connect with the oil pocket two ends, and four oil-in chamber of a side are respectively by oil duct 30,32,33,34 lead to externally, and relief valve 9 is the DBD type, hand pump 11 is common hydraulic handle formula hand pump, stop valve is the high-pressure ball valve of 10mm latus rectum, and all connect oil pipe, is the high pressure resistant pipe of 10mm diameter.
Claims (1)
- A kind of power-saving energy-accumulating hydraulic power system that hydraulic pressure execution device is provided power and control, by accumulator, pressure relay, pressure gauge, stop valve, shuttle cuts down, oil pump, motor, pilot operated directional control valve, relief valve, hand pump, Pilot operated check valve is formed, and relief valve one end communicates with fuel tank, simultaneously with hand pump one end, accumulator one end, shuttle valve one end and liquid controlled reversing valve outlet port join, and another outlet of the other end and pilot operated directional control valve is joined, and join with the hand pump the other end simultaneously, two inlets of pilot operated directional control valve are imported and exported with oil pump respectively, the two ends of Pilot operated check valve and the two ends of shuttle valve also connect, and connect the two ends of hydraulic power unit simultaneously respectively, accumulator and hand pump, be serially connected with stop valve between the relief valve, be connected to pressure relay and pressure gauge between accumulator and the stop valve, join with the shuttle valve control point simultaneously, all connect oil pipe and are high pressure resistant pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127928 CN1112521C (en) | 2001-07-13 | 2001-07-13 | Power-saving energy-accumulating hydraulic power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127928 CN1112521C (en) | 2001-07-13 | 2001-07-13 | Power-saving energy-accumulating hydraulic power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1323956A CN1323956A (en) | 2001-11-28 |
| CN1112521C true CN1112521C (en) | 2003-06-25 |
Family
ID=4667833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01127928 Expired - Fee Related CN1112521C (en) | 2001-07-13 | 2001-07-13 | Power-saving energy-accumulating hydraulic power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1112521C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1815040A (en) * | 2005-02-06 | 2006-08-09 | 何扬东 | Concrete pump hydraulic system auxiliary energy-storage flow-increasing device (2) |
| CN100577400C (en) * | 2008-07-01 | 2010-01-06 | 南通市南方润滑液压设备有限公司 | Controllable type rolling machine hydraulic system |
| CN102003421B (en) * | 2010-12-03 | 2013-02-13 | 泰兴市同济工程机械厂 | Efficient and energy-saving device for hydraulic station |
| CN102536933B (en) * | 2012-02-06 | 2015-05-20 | 三一重工股份有限公司 | Hydraulic pumping system and concrete-pumping equipment comprising same |
| CN103307059B (en) * | 2013-06-03 | 2016-07-13 | 天津优瑞纳斯液压机械有限公司 | Hydraulic actuator |
| CN103982472B (en) * | 2014-05-28 | 2016-01-27 | 青岛大学 | A kind of load isolation formula fluid integrated power system |
| CN105443462A (en) * | 2014-08-12 | 2016-03-30 | 安钛医疗设备股份有限公司 | Two-way output hybrid hydraulic power system |
-
2001
- 2001-07-13 CN CN 01127928 patent/CN1112521C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1323956A (en) | 2001-11-28 |
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