CN102155464A - Novel variable pump system of hydraulic power unit - Google Patents
Novel variable pump system of hydraulic power unit Download PDFInfo
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- CN102155464A CN102155464A CN2011100846717A CN201110084671A CN102155464A CN 102155464 A CN102155464 A CN 102155464A CN 2011100846717 A CN2011100846717 A CN 2011100846717A CN 201110084671 A CN201110084671 A CN 201110084671A CN 102155464 A CN102155464 A CN 102155464A
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Abstract
The invention relates to a novel variable pump system of a hydraulic power unit, comprising a pump body, a motor main body, a hydraulic motor, an overflow valve unit and a split-flow reducing valve, wherein the motor main body and the hydraulic motor are respectively arranged at two sides of the pump body, an external oil path of the hydraulic motor is connected with a throttle valve I, a power-driven one-way valve and an energy accumulator in sequence, the overflow valve unit is arranged on another oil path outside the pump body, and the overflow valve unit is connected with the split-flow reducing valve and a throttle valve II in sequence. The novel variable pump system has the beneficial effects that the variable of flow rate from zero to full flow can be realized, the core principles of the pump are realized by fixed displacement pump types (such as a gear pump, a vane pump, plunger pump and the like); moreover, the conversion of constant pressure, constant power, proportion variable and load sensitivity can be realized by the novel variable pump system.
Description
Technical field
The present invention relates to the oil hydraulic pump technical field, relate in particular to a kind of New Variable Displacement Pump system of hydraulic power unit.
Background technique
Variable displacement pump mainly is divided into variable vane pump and Variable plunger pump, does not also have gear pump with variable capacity; Gear pump wherein is solid durable because of it, and therefore easy processing still has very large-scale application, but can not cause a lot of energy waste problems by variable because of it.In addition, variable displacement pump is divided into multiple patterns such as constant-pressure variable, permanent power and variable, load-sensitive type variable, rate variable again on its variable mode, and it respectively has pluses and minuses, but can not use on-the-spot stochastic transformation, thereby brings inconvenience or energy waste.Though variable-frequency motor adds metering pump certain development is arranged in recent years, because of oil pump from absorption, minimum speed is had certain requirement, can not accomplish that flow is 0 variable, still exists energy waste.
Summary of the invention
At above defective, the invention provides a kind of New Variable Displacement Pump system of hydraulic power unit, thereby help the convenient conversion that realizes between constant voltage, permanent power, rate variable, the load-sensitive.
For achieving the above object, the present invention is by the following technical solutions:
A kind of New Variable Displacement Pump system of hydraulic power unit, comprise the pump housing, motor main body, oil hydraulic motor, relief valve unit and shunting decompression valve, described pump housing both sides are provided with motor main body and oil hydraulic motor respectively, the outside oil circuit of oil hydraulic motor wherein connects throttle valve one, electronic one-way valve and accumulator successively, on the outside oil circuit of the described pump housing relief valve unit is set, this relief valve unit and shunting decompression valve, throttle valve two are linked in sequence successively; Described accumulator outside is furnished with pressure gauge with electric contact.
The beneficial effect of the New Variable Displacement Pump system of hydraulic power unit of the present invention is: not only can realize flow by 0 variable to full flow, and the central principle of this pump is metering pump pattern (being that metering pumps such as available gear pump, vane pump, plunger pump are realized); Simultaneously, this product can conveniently be realized the conversion between constant voltage, permanent power, rate variable, the load-sensitive.
Description of drawings
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the New Variable Displacement Pump system principle structural drawing of the described hydraulic power unit of the embodiment of the invention.
Among the figure:
1, accumulator; 2, electronic one-way valve; 3, throttle valve one; 4, the pump housing; 5, motor main body; 6, oil hydraulic motor; 7, pressure gauge with electric contact; 8, one-way valve; 9, relief valve unit; 10, shunting decompression valve; 11, throttle valve two; 12, fuel tank; 13, level meter.
Embodiment
As shown in Figure 1, the New Variable Displacement Pump system of the described hydraulic power unit of the embodiment of the invention, comprise the pump housing 4, motor main body 5, oil hydraulic motor 6, relief valve unit 9 and shunting decompression valve 10, the described pump housing 4 both sides are provided with motor main body 5 and oil hydraulic motor 6 respectively, oil hydraulic motor 6 outside oil circuits wherein connect throttle valve 1, electronic one-way valve 2 and accumulator 1 successively, and described accumulator 1 outside is furnished with pressure gauge with electric contact 7; The described pump housing 4 outsides one-way valve 8 that is connected in series, this one-way valve 6 connects the fuel tank 12 that has level meter 13; On the described pump housing 4 outside another oil circuits relief valve unit 9 is set, this relief valve unit 9 is linked in sequence successively with shunting decompression valve 10, throttle valve 2 11.Wherein, motor main body 5 drives the pump housing 4, oil hydraulic motor 6 coaxial rotation, and relief valve unit 9 has safety effect, and shunting decompression valve 10 plays system pressure and sets and shunting action, throttle valve 2 11 has the load-sensitive effect of output, and throttle valve 1 has the effect of the power way of output.Behind electric motor starting, fluid is through the pump housing 4 pressurizations, when shunting decompression valve 10 reaches setting pressure P1, the reduction valve main valve plug is to closing the motion of P1 direction, the PK mouth of main valve plug moves towards opening direction simultaneously, unnecessary pressure flow flows to fluid pressure motor 6 through PK, and oil hydraulic motor 6 active movements are given motor with the kinetic energy anti-pass, can save energy; Keep setting pressure and do not have fluid when output when the P1 mouth, decompression flow divider valve core P closes to be close to and closes, and the PK mouth is close to and opens entirely, and fluid kinetic energy all feeds back to motor by oil hydraulic motor 6, and at this moment whole pumping source shows as the effect of constant pressure variable displacement pump; Zero delivery output, but keep delivery pressure P1.In like manner, when the P1 mouth pressure is lower than setting pressure, decompression flow divider valve core P1 mouth standard-sized sheet, PK mouth complete shut-down, the pressure oil that the pump housing 4 comes out be outwards output all, oil pump full flow output this moment, oil motor is formed the idle running loop with one-way valve, and when throttle valve 1 was opened entirely, pumping source showed as the effect of constant pressure variable displacement pump, part shows as the effect of permanent power when opening, be metering pump when complete shut-down is dead; Throttle valve 2 11 is suitably regulated, and can reach flow output feedback, reaches the effect of load-sensitive; If change the pilot valve of shunting decompression valve 10 into proportional pressure-reducing valve, then pump shows as the pressure proportional variable displacement pump, if change throttle valve 2 11 into proportional throttle valve, then pump shows as the flow proportional pump.
Claims (3)
1. the New Variable Displacement Pump system of a hydraulic power unit, comprise the pump housing (4), motor main body (5), oil hydraulic motor (6), relief valve unit (9) and shunting decompression valve (10), it is characterized in that: the described pump housing (4) both sides are provided with motor main body (5) and oil hydraulic motor (6) respectively, on the outside oil circuit of the described pump housing (4) relief valve unit (9) is set, this relief valve unit (9) is linked in sequence successively with shunting decompression valve (10), throttle valve two (11).
2. the New Variable Displacement Pump system of hydraulic power unit according to claim 1, it is characterized in that: described accumulator (1) outside is furnished with pressure gauge with electric contact (7).
3. the New Variable Displacement Pump system of hydraulic power unit according to claim 1, it is characterized in that: the outside oil circuit of described oil hydraulic motor (6) connects throttle valve one (3), electronic one-way valve (2) and accumulator (1) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100846717A CN102155464A (en) | 2011-04-06 | 2011-04-06 | Novel variable pump system of hydraulic power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100846717A CN102155464A (en) | 2011-04-06 | 2011-04-06 | Novel variable pump system of hydraulic power unit |
Publications (1)
| Publication Number | Publication Date |
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| CN102155464A true CN102155464A (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100846717A Pending CN102155464A (en) | 2011-04-06 | 2011-04-06 | Novel variable pump system of hydraulic power unit |
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| CN (1) | CN102155464A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720475A (en) * | 2012-07-12 | 2012-10-10 | 中国海洋石油总公司 | Safe and energy-saving immovable-string viscosity-breaking and paraffin-inhibiting system for offshore oilfields |
| 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 |
| CN105313370A (en) * | 2014-06-20 | 2016-02-10 | 天津市天锻压力机有限公司 | Method for proportioning pump constant power control for bedding-in hydraulic machine |
| CN106151122A (en) * | 2015-04-15 | 2016-11-23 | 天津航天瑞莱科技有限公司 | A kind of multifunction hydraulic substation |
| CN107725506A (en) * | 2017-10-23 | 2018-02-23 | 天津世仓工业设备有限公司 | A kind of numerical control press electrohydraulic servo-controlling system |
| WO2019000251A1 (en) * | 2017-06-28 | 2019-01-03 | 吉林省云动力装备制造有限公司 | Intelligent adjustable high-pressure pump station system |
| CN109595204A (en) * | 2018-12-07 | 2019-04-09 | 中联重科股份有限公司 | Variable pump hydraulic system, control method thereof and crane |
| CN110043526A (en) * | 2019-04-26 | 2019-07-23 | 燕山大学 | A kind of Direct Action Type overflow motor and its hydraulic pressure circuit |
| CN114294303A (en) * | 2022-01-05 | 2022-04-08 | 三一汽车起重机械有限公司 | Power-adjustable hydraulic system, power-adjustable hydraulic method and working machine |
| CN114755776A (en) * | 2022-03-18 | 2022-07-15 | 天津市精研工程机械传动有限公司 | Synchronous control system and control method of multi-tire type cable laying machine |
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| CN201288721Y (en) * | 2008-10-31 | 2009-08-12 | 浙江大学 | Energy recovery system of mixed power single-valve multiple actuator assembly |
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| CN201753057U (en) * | 2010-07-22 | 2011-03-02 | 肖公平 | Hydraulic driving system for manual overflow speed-adjusting type mining ropeway |
| CN202381442U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Novel variable capacity pump system for hydraulic power station |
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- 2011-04-06 CN CN2011100846717A patent/CN102155464A/en active Pending
Patent Citations (5)
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| CN201288721Y (en) * | 2008-10-31 | 2009-08-12 | 浙江大学 | Energy recovery system of mixed power single-valve multiple actuator assembly |
| CN101839208A (en) * | 2009-03-16 | 2010-09-22 | 马广奇 | Hydraulic motor-driving generator device |
| CN201659883U (en) * | 2010-04-02 | 2010-12-01 | 杭州浙力叉车集团有限公司 | Collocation and combination of forklift system units |
| CN201753057U (en) * | 2010-07-22 | 2011-03-02 | 肖公平 | Hydraulic driving system for manual overflow speed-adjusting type mining ropeway |
| CN202381442U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Novel variable capacity pump system for hydraulic power station |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720475A (en) * | 2012-07-12 | 2012-10-10 | 中国海洋石油总公司 | Safe and energy-saving immovable-string viscosity-breaking and paraffin-inhibiting system for offshore oilfields |
| 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 |
| CN105313370A (en) * | 2014-06-20 | 2016-02-10 | 天津市天锻压力机有限公司 | Method for proportioning pump constant power control for bedding-in hydraulic machine |
| CN105313370B (en) * | 2014-06-20 | 2017-11-03 | 天津市天锻压力机有限公司 | The proportioning pump constant-power control method of bedding-in hydraulic press |
| CN106151122A (en) * | 2015-04-15 | 2016-11-23 | 天津航天瑞莱科技有限公司 | A kind of multifunction hydraulic substation |
| CN106151122B (en) * | 2015-04-15 | 2017-11-28 | 天津航天瑞莱科技有限公司 | A kind of multifunction hydraulic substation |
| WO2019000251A1 (en) * | 2017-06-28 | 2019-01-03 | 吉林省云动力装备制造有限公司 | Intelligent adjustable high-pressure pump station system |
| CN107725506A (en) * | 2017-10-23 | 2018-02-23 | 天津世仓工业设备有限公司 | A kind of numerical control press electrohydraulic servo-controlling system |
| CN109595204A (en) * | 2018-12-07 | 2019-04-09 | 中联重科股份有限公司 | Variable pump hydraulic system, control method thereof and crane |
| CN109595204B (en) * | 2018-12-07 | 2020-09-29 | 中联重科股份有限公司 | Variable pump hydraulic system, control method thereof and crane |
| CN110043526A (en) * | 2019-04-26 | 2019-07-23 | 燕山大学 | A kind of Direct Action Type overflow motor and its hydraulic pressure circuit |
| CN114294303A (en) * | 2022-01-05 | 2022-04-08 | 三一汽车起重机械有限公司 | Power-adjustable hydraulic system, power-adjustable hydraulic method and working machine |
| CN114755776A (en) * | 2022-03-18 | 2022-07-15 | 天津市精研工程机械传动有限公司 | Synchronous control system and control method of multi-tire type cable laying machine |
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Application publication date: 20110817 |