CN201083213Y - Super-high-pressure hydraulic pump station - Google Patents

Super-high-pressure hydraulic pump station Download PDF

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Publication number
CN201083213Y
CN201083213Y CNU2007200411767U CN200720041176U CN201083213Y CN 201083213 Y CN201083213 Y CN 201083213Y CN U2007200411767 U CNU2007200411767 U CN U2007200411767U CN 200720041176 U CN200720041176 U CN 200720041176U CN 201083213 Y CN201083213 Y CN 201083213Y
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CN
China
Prior art keywords
pressure
valve
low
plunger chamber
oil
Prior art date
Application number
CNU2007200411767U
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Chinese (zh)
Inventor
吴小松
金燕
王粉才
方秋冬
圣兰
Original Assignee
爱环吴世(苏州)环保有限公司
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Priority to CNU2007200411767U priority Critical patent/CN201083213Y/en
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Publication of CN201083213Y publication Critical patent/CN201083213Y/en

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Abstract

The utility model discloses an ultrahigh pressure hydraulic pumping station, comprising an oil pump, an electric motor, an oil tank and a control valve, and is characterized in that the oil pump is a high and low-pressure double-stage piston pump, the inside of which is at least provided with a low pressure piston chamber and a high pressure piston chamber; the control valve comprises an M-type three-position four-way valve, a low pressure check valve, a high pressure check valve, a hydraulic control check valve, a high pressure relief valve, a low pressure relief valve and an oil return relief valve; the inlet of the low pressure piston chamber is connected with the oil tank, the outlet is divided into two branches; one of the branches is connected with the inlet of the high pressure piston chamber, the other one is connected with the inlet [T]of the M-type three-position four-way valve through the low pressure check valve; the outlet of the high pressure piston chamber is connected with the inlet [T] of the M-type three-position four-way valve through the high pressure check valve; a branch led out between the inlet of the low pressure piston chamber and the low pressure check valve is connected with the oil tank through the low pressure relief valve; and a branch led out between the inlet of the high pressure piston chamber and the high pressure check valve is connected with the oil tank through the high pressure relief valve. The utility model is able to output ultrahigh oil pressure, which can achieve 40-80 Mpa.

Description

Ultrahigh voltage hydraulic pump station
Technical field
The utility model relates to the hydraulic system field, is specifically related to a kind of ultrahigh voltage hydraulic pump station.
Background technique
Hydraulic power unit is exactly a hydraulic pressure installation independently, and its effect is the pressure energy that mechanical energy is converted into hydraulic oil, and size, direction and the flow of control hydraulic fluid pressure, it is supplied with hydraulic machinery, in order to the work of drive controlling hydraulic machinery.It is applicable to hydraulic pressure installation and the separable various hydraulic machineries of hydraulic machinery main frame.
In general, hydraulic power unit mainly is made up of oil pump, motor, fuel tank and control valve, and described control valve comprises selector valve, relief valve, one-way valve or the like.Domestic hydraulic fluid pumping plant has two kinds substantially at present: a kind of is the simple single channel fuel feeding that adopts single oil pump, and oil pressure can not be adjusted; Another kind is to adopt two oil pumps: a high pressure oil pump and a low pressure fuel pump divide the two-way fuel feeding, its advantage is that oil pressure can be selected in high pressure, low pressure by user's requirement, but the unloaded oil return of its its low pressure pump for high pressure oil the time, the high pressure of output only depends on high pressure oil pump to provide, delivery pressure is still limited, the pressure of understanding the highest output hydraulic oil of existing hydraulic power unit according to the claimant can only reach 31.5Mpa, the pressurize coefficient is the highest also can only to reach 21~22Mpa, and such hydraulic power unit can't satisfy the pressure requirement of the hydraulic machinery of needs hyperpressures such as pressure filter.
Summary of the invention
The utility model provides a kind of novel ultrahigh voltage hydraulic pump station for solving the technical problem that delivery pressure is not high, the pressurize coefficient is also lower that prior art exists.
For achieving the above object, the technical solution adopted in the utility model is:
Related content in the technique scheme is explained as follows: a kind of ultrahigh voltage hydraulic pump station comprises oil pump, motor, fuel tank and control valve; Described oil pump is a high low pressure twin-stage plunger pump, and its inside is provided with a low-pressure plunger chamber and a high-pressure plunger chamber at least; Described control valve comprises M type three position four-way directional control valve, low pressure check valve, high pressure one-way valve, Pilot operated check valve, high-pressure overflow valve, low pressure relief valve and oil return relief valve; The inlet connected tank of described low-pressure plunger chamber, its outlet divides two-way, one the tunnel connects the inlet of high-pressure plunger chamber, and another road connects the import of M type three position four-way directional control valve through low pressure check valve, and the outlet of high-pressure plunger chamber also is connected in parallel in the import of M type three position four-way directional control valve through the high pressure one-way valve; Draw one the tunnel through the low pressure relief valve connected tank between the outlet of described low-pressure plunger chamber and the low pressure check valve, and also draw one the tunnel between the outlet of high-pressure plunger chamber and the high pressure one-way valve through the high-pressure overflow valve connected tank; As fuel feeding A mouth, its second outlet is exported as oil return B mouth, and also draws one the tunnel through oil return relief valve connected tank in second outlet through Pilot operated check valve output in first outlet of described M type three position four-way directional control valve; The control oil channel of described Pilot operated check valve is connected in second outlet.
1, in the such scheme, described " M type three position four-way directional control valve " is meant that the meta function is the three position four-way directional control valve of M type, specifically can adopt hand-operated direction valve, solenoid directional control valve, motor-driven selector valve or hydraulicchange-over valve etc. by user's requirement.
2, in the such scheme, in the described high low pressure twin-stage plunger pump, one or more (the best is 2-4) low-pressure plunger chamber and one or more (the best is 2-4) high-pressure plunger chamber can be set, each low-pressure plunger chamber is in parallel, and each high-pressure plunger chamber also is in parallel.
3, in the such scheme, draw again on the described fuel feeding A mouth and be connected to pressure relay and pressure gauge, reach pressure-display and protective action with this.
4, in the such scheme, described Pilot operated check valve and oil return relief valve are formed an integrated valve block; Described low pressure relief valve, low pressure check valve, high-pressure overflow valve and high pressure one-way valve are formed another integrated valve block.Make compact structure with this, reduce volume.
5, in the such scheme, described high low pressure twin-stage plunger pump the best is to adopt inclined disc type, self-priming axial piston pump.
The utility model design principle is: the utility model adopts plunger pump, and the structure of one tunnel supply high-pressure plunger chamber is told in the output of its low-pressure plunger chamber, promptly be similar to the high low pressure plunger compartment and the high-pressure plunger chamber is in series, the output after high-pressure plunger chamber secondary improves of the pressure of low-pressure plunger chamber output, final delivery pressure is increased, can reach 40-80MPa.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, because the utility model adopts high low pressure twin-stage plunger pump, and the oil of fuel tank is connected to the high-pressure plunger chamber through the low-pressure plunger chamber, promptly earlier with pressurizeing through high-pressure plunger chamber secondary again after the pressurization of low-pressure plunger chamber, thereby improved final delivery pressure, through experiment, delivery pressure of the present utility model can reach 40-80MPa.
2, because the utility model adopts high low pressure twin-stage plunger pump, and the delivery pressure of plunger pump own is big, also from having guaranteed the height of delivery pressure on the one hand.
3, the utility model volume is less, floor space is few, compact structure, with oil less, reliable operation also, stable performance.
Description of drawings
Accompanying drawing 1 is a hydraulic circuit diagram of the present utility model;
Accompanying drawing 2 is the structural representation of high low pressure twin-stage plunger pump of the present utility model.
In the above accompanying drawing: 1, motor; 2, fuel tank; 3, high low pressure twin-stage plunger pump; 4, low-pressure plunger chamber; 5, high-pressure plunger chamber; 6, M type three position four-way directional control valve; 7, low pressure check valve; 8, high pressure one-way valve; 9, Pilot operated check valve; 10, high-pressure overflow valve; 11, low pressure relief valve; 12, oil return relief valve; 13, pressure relay; 14, pressure gauge; 15, rotating shaft; 16, swash plate; 17, plunger rod.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1, a kind of ultrahigh voltage hydraulic pump station is made up of oil pump, motor 1, fuel tank 2, control valve, electric box.Described oil pump is a high low pressure twin-stage plunger pump 3, its inside is provided with one or more (being exemplified as 3) low-pressure plunger chambers 4 and one or more (being exemplified as 3) high-pressure plunger chamber 5.Described control valve is: the meta function is that three position four-way directional control valve 6, low pressure check valve 7, the high pressure of M type is unidirectional 8, Pilot operated check valve 9, high-pressure overflow valve 10, low pressure relief valve 11 and oil return relief valve 12.
Shown in accompanying drawing 1, oil hydraulic circuit is: the inlet connected tank 2 of described low-pressure plunger chamber 4, its outlet divides two-way, one the tunnel connects the inlet of high-pressure plunger chamber 5, another road meets the import T of M type three position four-way directional control valve 6 through low pressure check valve 7, and the outlet of high-pressure plunger chamber 5 also is connected in parallel on the import T of M type three position four-way directional control valve 6 through high pressure one-way valve 8; And, draw one the tunnel between the outlet of described low-pressure plunger chamber 4 and the low pressure check valve 7 through low pressure relief valve 11 connected tanks 2, and also draw one the tunnel between the outlet of high-pressure plunger chamber 5 and the high pressure one-way valve 8 through high-pressure overflow valve 10 connected tanks 2; As fuel feeding A mouth, its second outlet B exports as oil return B mouth the first outlet A of described M type three position four-way directional control valve 6, and also draws one the tunnel through oil return relief valve 12 connected tanks 2 on the second outlet B through Pilot operated check valve 9 outputs; The control oil channel of described Pilot operated check valve 9 is connected on the second outlet B; And, on fuel feeding A mouth, draw and be connected to pressure relay 13 and pressure gauge 14.Shown in accompanying drawing 1, above-mentioned Pilot operated check valve 9 and oil return relief valve 12 are formed an integrated valve block, and low pressure relief valve 11, low pressure check valve 7, high-pressure overflow valve 10 and high pressure one-way valve 8 are formed another integrated valve block, see the dot-dash wire frame among the figure.
Shown in accompanying drawing 2, described high low pressure twin-stage plunger pump 3 is inclined disc type, self-priming axial piston pump, drives a swash plate 16 by rotating shaft 15 in its pump housing, plunger rod 17 ends that swash plate 16 drives in each low-pressure plunger chamber 4 and the high-pressure plunger chamber 5.Only be to illustrate to draw a low-pressure plunger chamber 4 and a high-pressure plunger chamber 5 in the accompanying drawing 2, low-pressure plunger chamber 4 is the plunger of φ 12mm, and the high-pressure plunger chamber is the plunger of φ 6mm.
Shown in M type three position four-way directional control valve 6 figure in the present embodiment is manually operated valve, and reality also can adopt solenoid valve, hydraulic operated valve or motor valve etc., and this is by user's the design that needs.Above-mentioned electric box also can be two kinds: a kind of is the terminal board of external lead wire to be set in order to external outer electric wiring of joining, and another kind is the electric wiring that has disposed a complete set of control apparatus.These needs by the user are selected for use.
The working procedure of present embodiment is as follows:
Before the use, at first the oil hydraulic cylinder of the fuel feeding A mouth of present embodiment and oil return B mouth and hydraulic machinery is imported and exported and connected with high-pressure oil pipe, the circuit with the motor of present embodiment connects wiring through electric box and power supply again.Open motor switch, motor rotation.Set the operating pressure of low pressure relief valve 11, high-pressure overflow valve 10, oil return relief valve 12 and pressure relay 13 then, the operating pressure of general pressure relay 13 is set in about 33-43MPa, low pressure relief valve 11 is located at about 8MPa, high-pressure overflow valve 10 is set in about 50MPa, and oil return relief valve 12 is set in about 14 MPa.
During first the use, because each low-pressure plunger chamber 4 and high-pressure plunger chamber 5 are filled with air, so must make pumping plant idle running several minutes earlier, air in lubricated preheating and the blowdown pump.Handle M type three position four-way directional control valve 6 then to position, a left side, starting electrical machinery 1 makes 3 work of high low pressure twin-stage plunger pump, 4 outputs divide two-way to oil through the low-pressure plunger chamber, one the tunnel directly through low pressure check valve 7 fuel feeding, and another road enter high-pressure plunger chamber 5 through the high-pressure plunger chamber again through high pressure one-way valve 8 fuel feeding, at this moment, low pressure and high pressure two-way simultaneously through M type three position four-way directional control valve 6 to fuel feeding A confession oil, and the oil return of oil return B mouth makes the operating cylinder action of hydraulic machinery to fuel tank.System pressure constantly raises, when the oil pressure in the pipeline surpasses 8MPa, low pressure relief valve 11 action conductings, make the part oil unloading oil sump tank of the output of low-pressure plunger chamber 4, but also have the oil identical to supply with high-pressure plunger chamber 5, boost through high-pressure plunger chamber 5 and continue to fuel feeding A confession oil with high-pressure plunger chamber 5 required flows, pressure in pipeline reaches 43MPa, the power supply of motor 1 is cut off in pressure relay 13 actions, makes high low pressure twin-stage plunger pump 3 integral body shut down energy efficient; But, this moment is because the effect of Pilot operated check valve 9, but system's output pressurize, and As time goes on, when delivery pressure descended to some extent, pressure relay 13 can reset again, restarted motor 1 and drove 3 work of high low pressure twin-stage plunger pump, so circulation makes output oil pressure remain at the state of 33MPa-43MPa.In above-mentioned working procedure, during low pressure (less than 8MPa), by high low pressure two-way pipeline while fuel feeding, the pumping plant flow is 2.2L/min, when pressure in the pipeline raises (greater than 8MPa), changes the independent fuel feeding of pressure duct into, make flow reduce to 0.4L/min automatically, to save power.And, the time oil of above-mentioned high-pressure plunger chamber 5 is provided by low-pressure plunger chamber 4, high-pressure plunger chamber 5 is the oil pressure further risings again with 4 outputs of low-pressure plunger chamber, therefore the size of high-pressure oil feed is the stack by low-pressure plunger chamber 4 and high-pressure plunger chamber 5 amount of boost, therefore the high-pressure that provides can reach 43MPa, even also can be set at 80MPa.
After the hydraulic cylinder works stroke of hydraulic machinery is finished; handle M type three position four-way directional control valve 6 again to right position; this pumping plant is oppositely to oil return B confession oil; pressure one raises and promptly opens Pilot operated check valve 9 automatically in the oil return B mouth place pipeline; make the hydraulic oil can be through fuel feeding A mouth oil sump tank; make the oil hydraulic cylinder backhaul of hydraulic machinery, setting oil return relief valve 12 is the pressure of safety protection oil hydraulic cylinder backhaul, prevents to damage oil hydraulic cylinder.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims (5)

1. a ultrahigh voltage hydraulic pump station comprises oil pump, motor [1], fuel tank [2] and control valve, it is characterized in that: described oil pump is a high low pressure twin-stage plunger pump [3], and its inside is provided with a low-pressure plunger chamber [4] and a high-pressure plunger chamber [5] at least; Described control valve comprises M type three position four-way directional control valve [6], low pressure check valve [7], high pressure one-way valve [8], Pilot operated check valve [9], high-pressure overflow valve [10], low pressure relief valve [11] and oil return relief valve [12]; The inlet connected tank [2] of described low-pressure plunger chamber [4], its outlet divides two-way, one the tunnel connects the inlet of high-pressure plunger chamber [5], another road connects the import [T] of M type three position four-way directional control valve [6] through low pressure check valve [7], and the outlet of high-pressure plunger chamber [5] also is connected in parallel in the import [T] of M type three position four-way directional control valve [6] through high pressure one-way valve [8]; Draw one the tunnel through low pressure relief valve [11] connected tank [2] between the outlet of described low-pressure plunger chamber [4] and the low pressure check valve [7], and also draw one the tunnel between the outlet of high-pressure plunger chamber [5] and the high pressure one-way valve [8] through high-pressure overflow valve [10] connected tank [2]; As fuel feeding A mouth, its second outlet [B] is exported as oil return B mouth, and also draws one the tunnel through oil return relief valve [12] connected tank [2] in second outlet [B] through Pilot operated check valve [9] output in first outlet [A] of described M type three position four-way directional control valve [6]; The control oil channel of described Pilot operated check valve [9] is connected in second outlet [B].
2. ultrahigh voltage hydraulic pump station according to claim 1, it is characterized in that: in the described high low pressure twin-stage plunger pump [3], be provided with 2-4 low-pressure plunger chamber [4] and 2-4 high-pressure plunger chamber [5], each low-pressure plunger chamber [4] is in parallel, and each high-pressure plunger chamber [5] also is in parallel.
3. ultrahigh voltage hydraulic pump station according to claim 1 is characterized in that: draw again on the described fuel feeding A mouth and be connected to pressure relay [13] and pressure gauge [14].
4. ultrahigh voltage hydraulic pump station according to claim 1 is characterized in that: described Pilot operated check valve [9] and oil return relief valve [12] are formed an integrated valve block; Described low pressure relief valve [11], low pressure check valve [7], high-pressure overflow valve [10] and high pressure one-way valve [8] are formed another integrated valve block.
5. ultrahigh voltage hydraulic pump station according to claim 1 is characterized in that: described high low pressure twin-stage plunger pump [3] is inclined disc type, self-priming axial piston pump.
CNU2007200411767U 2007-08-01 2007-08-01 Super-high-pressure hydraulic pump station CN201083213Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865107A (en) * 2010-07-02 2010-10-20 张银根 Ultrahigh voltage hydraulic pump station
CN102022400A (en) * 2009-09-21 2011-04-20 邵阳维克液压有限责任公司 System for switching to reserve pump in hydraulic system of ordinary power station
CN102108983A (en) * 2010-12-28 2011-06-29 宁夏永旺机电设备制造有限公司 Hydraulic magnesium pressing machine
CN102434539A (en) * 2011-10-20 2012-05-02 大连橡胶塑料机械股份有限公司 Double-station hydraulic station of internal mixer
CN102829028A (en) * 2012-09-25 2012-12-19 莱芜钢铁集团有限公司 Oil supply system of hydraulic pump station and oil interruption loop of oil supply system
CN105508349A (en) * 2016-02-02 2016-04-20 上海朝田实业股份有限公司 Emergency cut-off oil duct valve for hydraulic power station
CN105570211A (en) * 2015-12-25 2016-05-11 上海华龙测试仪器股份有限公司 Controlling system for high-pressure oil source
CN107655698A (en) * 2017-08-30 2018-02-02 中国煤炭科工集团太原研究院有限公司 A kind of hydraulic power unit for the experiment of explosion-proof wet brake

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022400A (en) * 2009-09-21 2011-04-20 邵阳维克液压有限责任公司 System for switching to reserve pump in hydraulic system of ordinary power station
CN101865107A (en) * 2010-07-02 2010-10-20 张银根 Ultrahigh voltage hydraulic pump station
CN101865107B (en) * 2010-07-02 2012-07-18 张银根 Ultrahigh voltage hydraulic pump station
CN102108983A (en) * 2010-12-28 2011-06-29 宁夏永旺机电设备制造有限公司 Hydraulic magnesium pressing machine
CN102434539A (en) * 2011-10-20 2012-05-02 大连橡胶塑料机械股份有限公司 Double-station hydraulic station of internal mixer
CN102829028A (en) * 2012-09-25 2012-12-19 莱芜钢铁集团有限公司 Oil supply system of hydraulic pump station and oil interruption loop of oil supply system
CN102829028B (en) * 2012-09-25 2015-03-11 莱芜钢铁集团有限公司 Oil supply system of hydraulic pump station and oil interruption loop of oil supply system
CN105570211A (en) * 2015-12-25 2016-05-11 上海华龙测试仪器股份有限公司 Controlling system for high-pressure oil source
CN105570211B (en) * 2015-12-25 2017-06-23 上海华龙测试仪器股份有限公司 A kind of high pressure fuel source control system
CN105508349A (en) * 2016-02-02 2016-04-20 上海朝田实业股份有限公司 Emergency cut-off oil duct valve for hydraulic power station
CN107655698A (en) * 2017-08-30 2018-02-02 中国煤炭科工集团太原研究院有限公司 A kind of hydraulic power unit for the experiment of explosion-proof wet brake

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080709

Termination date: 20110801

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