CN202381442U - Novel variable capacity pump system for hydraulic power station - Google Patents
Novel variable capacity pump system for hydraulic power station Download PDFInfo
- Publication number
- CN202381442U CN202381442U CN2011205584186U CN201120558418U CN202381442U CN 202381442 U CN202381442 U CN 202381442U CN 2011205584186 U CN2011205584186 U CN 2011205584186U CN 201120558418 U CN201120558418 U CN 201120558418U CN 202381442 U CN202381442 U CN 202381442U
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- pump
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- hydraulic motor
- motor
- pump system
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Abstract
The utility model relates to a novel variable capacity pump system for a hydraulic power station, which comprises a pump body, a motor main body, a hydraulic motor, a relief valve unit and a distribution reducing valve, wherein the motor main body and the hydraulic motor are respectively arranged at the two sides of the pump body, an external oil line of the hydraulic motor is sequentially connected with a throttle valve I, an electric check valve and an energy accumulator, and the relief valve unit is arranged on another external oil line of the pump body and sequentially connected with the distribution reducing valve and a throttle valve II. The novel variable capacity pump system has the beneficial effects that not only can the variation from zero to full flow be realized, but also the core principle of the pump is a constant delivery pump type (i.e. a gear pump, a vane pump, a plunger pump and other constant delivery pumps can be utilized to realize); and meanwhile, the product can conveniently realize the conversion among constant voltage, constant power, proportional variation and load sensing.
Description
Technical field
The utility model relates to a kind of variable displacement pump, relates in particular to a kind of New Variable Displacement Pump system of hydraulic power unit.
Background technique
Variable displacement pump is the variable pump of discharge capacity, can be single acting vane pump, radial plunger pump or axial piston pump, and wherein radial plunger pump comprises piston eccentric and eccentric shaft formula, and axial piston comprises inclined disc type and clino-axis type.Variable displacement pump because of its than metering pump energy saving, using scope is more and more wider; 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 on a large scale and use, 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
To above defective, the utility model provides a kind of New Variable Displacement Pump system of hydraulic power unit, thereby helps the convenient conversion that realizes between constant voltage, permanent power, rate variable, the load-sensitive.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
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; Said 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 said pump housing relief valve unit is set, and this relief valve unit and shunting decompression valve, throttle valve two are linked in sequence successively; Said accumulator outside is furnished with pressure gauge with electric contact.
The beneficial effect of the New Variable Displacement Pump system of the described hydraulic power unit of the utility model 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
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the New Variable Displacement Pump system principle structural drawing of the said hydraulic power unit of the utility model embodiment.
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 utility model embodiment; Comprise the pump housing 4, motor main body 5, oil hydraulic motor 6, relief valve unit 9 and shunting decompression valve 10; The said pump housing 4 both sides are provided with motor main body 5 and oil hydraulic motor 6 respectively, and oil hydraulic motor 6 outside oil circuits wherein connect throttle valve 1, electronic one-way valve 2 and accumulator 1 successively, and said accumulator 1 outside is furnished with pressure gauge with electric contact 7; The said 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 said pump housing 4 outside another oil circuits relief valve unit 9 is set, this relief valve unit 9 is linked in sequence with shunting decompression valve 10, throttle valve 2 11 successively.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, and when shunting decompression valve 10 reached setting pressure P1, the reduction valve main valve plug was 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 through 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 (2)
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 said pump housing (4) both sides are provided with motor main body (5) and oil hydraulic motor (6) respectively; The outside oil circuit of oil hydraulic motor wherein (6) connects throttle valve one (3), electronic one-way valve (2) and accumulator (1) successively; On the outside oil circuit of the said pump housing (4) relief valve unit (9) is set, this relief valve unit (9) is linked in sequence with shunting decompression valve (10), throttle valve two (11) successively.
2. the New Variable Displacement Pump system of hydraulic power unit according to claim 1, it is characterized in that: said accumulator (1) outside is furnished with pressure gauge with electric contact (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205584186U CN202381442U (en) | 2011-04-06 | 2011-12-28 | Novel variable capacity pump system for hydraulic power station |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120097220 | 2011-04-06 | ||
| CN201120097220.2 | 2011-04-06 | ||
| CN2011205584186U CN202381442U (en) | 2011-04-06 | 2011-12-28 | Novel variable capacity pump system for hydraulic power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381442U true CN202381442U (en) | 2012-08-15 |
Family
ID=46629947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205584186U Expired - Fee Related CN202381442U (en) | 2011-04-06 | 2011-12-28 | Novel variable capacity pump system for hydraulic power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381442U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155464A (en) * | 2011-04-06 | 2011-08-17 | 上海朝田实业有限公司 | Novel variable pump system of hydraulic power unit |
| CN105156379A (en) * | 2015-10-14 | 2015-12-16 | 东北大学 | Energy-saving constant-pressure oil source system and control method thereof |
-
2011
- 2011-12-28 CN CN2011205584186U patent/CN202381442U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155464A (en) * | 2011-04-06 | 2011-08-17 | 上海朝田实业有限公司 | Novel variable pump system of hydraulic power unit |
| CN105156379A (en) * | 2015-10-14 | 2015-12-16 | 东北大学 | Energy-saving constant-pressure oil source system and control method thereof |
| CN105156379B (en) * | 2015-10-14 | 2017-03-08 | 东北大学 | A kind of energy-saving constant pressure oil source system and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201508 Shanghai city Jinshan District Shanyang Zhen Shan Feng Road No. 58 Patentee after: SHANGHAI CHAOTIAN INDUSTRY CO., LTD. Address before: 201508 Jinshan District Feng Shan Road, Shanghai, No. 88 Patentee before: Shanghai Chaotian Industrial Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |