CN103157686A - Large hydraulic pump station with step-less adjustable pressure and flow - Google Patents
Large hydraulic pump station with step-less adjustable pressure and flow Download PDFInfo
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- CN103157686A CN103157686A CN2011104218986A CN201110421898A CN103157686A CN 103157686 A CN103157686 A CN 103157686A CN 2011104218986 A CN2011104218986 A CN 2011104218986A CN 201110421898 A CN201110421898 A CN 201110421898A CN 103157686 A CN103157686 A CN 103157686A
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- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims description 10
- 239000002828 fuel tank Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 28
- 238000006073 displacement reaction Methods 0.000 description 13
- 238000001125 extrusion Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a large hydraulic pump station with step-less adjustable pressure and flow. The large hydraulic pump station comprises an oil tank and at least two groups of oil pump assemblies connected with the oil tank and is characterized in that: the output ends of the at least two groups of oil pump assemblies are connected with a converging assembly through independent output pipelines respectively; and the output end of the converging assembly is connected with a composite control valve for electro-hydraulic proportional pressure flow through a pipeline. According to the large hydraulic pump station, different pressure oil outputs are realized by means of the independent oil pump assemblies and pressure regulating assemblies, high-flow pressure oil is output to a PQ valve by means of the converging assembly, and the parameters of the PQ valve are adjusted by an electronic control system, so that different pressure values and flow values which are acquired in each work stage meet the requirements of systems.
Description
Technical field
The present invention relates to a kind of hydraulic power unit, be specifically related to a kind of stepless adjustable Large-scale Hydraulic Pumping Station of pressure, flow that is mainly used in the inner chamber metal extrusion molding machine.
Background technology
In the inner chamber metal extrusion molding machine, because executing agency's quantity is many, need different pressure and flow in each stage, operating mode is complicated.Existing a kind of hydraulic power unit is to adopt variable pump to meet design requirement, although efficient is high, the shortcomings such as but the variable pump of large flow exists, and cost is high, the pivot angle reaction is slow, noise is large, and the response time of pump control hydraulic system is longer, and there is strict demand the work period of the hydraulic system of inner chamber metal extrusion molding machine, is therefore to adopt variable pump.Also there is a kind of hydraulic power unit to adopt constant displacement pump to meet design requirement, although constant displacement pump cost compare with respect to variable pump is low, working service is simple, and have advantages of that voltage regulation performance is good, dynamic response is fast, but exist pressure to adjust the little shortcoming in space.Therefore, above two schemes all can not satisfy the job requirement of inner chamber metal extrusion molding machine.
Summary of the invention
The object of the invention is to provides a kind of Large-scale Hydraulic Pumping Station for the deficiencies in the prior art part, and it can realize pressure in the different operating stage, flow is stepless adjustable, satisfies the job requirement of inner chamber metal extrusion molding machine.
For achieving the above object, the present invention adopts following technical scheme:
Pressure, the stepless adjustable Large-scale Hydraulic Pumping Station of flow, comprise fuel tank and at least two group oil pump assemblies that are connected with fuel tank, it is characterized in that, the output of described at least two group oil pump assemblies collaborates assembly by output pipe independently and respectively and is connected, and the output of described interflow assembly is connected with a hydraulic proportional pressure flow composite controlling (PQ valve) by pipeline.
As preferably, described oil pump assembly is the quantitative oil pump assembly.
As preferably, the output pipe of every group of oil pump assembly is provided with a pressure regulation assembly.
As preferably, every group of oil pump assembly is connected with fuel tank by a self-sealing oil filter.
As preferably, the quantity of described oil pump assembly is three groups.
The present invention is by independently oil pump assembly and pressure regulation assembly are realized different pressure oil output, and adopting the interflow assembly to realize that the pressure oil of large flow outputs to the PQ valve, the parameter of adjusting the PQ valve by electric-control system makes the different force value of each working stage acquisition and flow value to satisfy the requirement of system.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure:
The 1-fuel tank; 2-quantitative oil pump assembly; 3-collaborates assembly; 4-hydraulic proportional pressure flow composite controlling (PQ valve); 5-pressure oil out splice going splice; 6-pressure regulation assembly; 7-self-sealing oil filter.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
The specific embodiment
As shown in Figure 1, pressure of the present invention, the stepless adjustable Large-scale Hydraulic Pumping Station of flow comprise fuel tank 1, three groups of constant displacement pump assemblies 2, interflow assembly 3 and PQ valves 4.Every group of constant displacement pump assembly 2 by pipeline with is connected a self-sealing oil filter 7 and is connected with fuel tank 1.The output of three groups of constant displacement pump assemblies 2 is connected in parallel by output pipe independently and interflow assembly 3 respectively, and a pressure regulation assembly 6 is set on the output pipe of every group of constant displacement pump assembly 2.The output of interflow assembly 3 is connected with hydraulic proportional pressure flow composite controlling 4 by pipeline, and the output of hydraulic proportional pressure flow composite controlling 4 is connected with pressure oil out splice going splice 5.
The constant displacement pump assembly pressure oil output of this hydraulic power unit is to the interflow assembly, the interflow assembly is realized the also combined stream work of pressure oil, and all pressure oils are outputed to the PQ valve, by adjusting force value and the flow value of PQ valve, can realize the pressure of different brackets and the pressure oil of flow, the pressure oil after adjustment exports hydraulic actuator to through the pressure oil out splice going splice.By regulating every group of pressure regulation assembly on constant displacement pump assembly output pipe, can make the pressure oil of every group of constant displacement pump assembly output different flow and pressure.And the self-sealing oil filter on every group of constant displacement pump assembly intake line is used for cutting off the input oil circuit of corresponding constant displacement pump assembly when maintenance, is convenient to shutdown maintenance.
The hydraulic power unit of the present embodiment has following advantage:
1, each constant displacement pump assembly has been realized the output of big-flow high-pressure oil by the interflow assembly, has satisfied the requirement of system to flow and pressure.
2, each constant displacement pump assembly outlet interflow, pressure oil output flow, pressure all can be by the electric-control system adjustment, easy operating and stylizing, and also the response time is short.
3, the PQ valve provides great convenience for inspection and the debugging of hydraulic system, and at examination phase, hydraulic system can adopt lower pressure and flow to check whether hydraulic system exists leakage of oil; In the debug phase, PQ can realize that stepless-adjustment seamless power and flow are to determine that each parts is at the needed pressure of different phase and flow.
Claims (5)
1. pressure, the stepless adjustable Large-scale Hydraulic Pumping Station of flow, comprise fuel tank, the at least two group oil pump assemblies that are connected with fuel tank, it is characterized in that, the output of described at least two group oil pump assemblies collaborates assembly by output pipe independently and respectively and is connected, and the output of described interflow assembly is connected with a hydraulic proportional pressure flow composite controlling by pipeline.
2. Large-scale Hydraulic Pumping Station according to claim 1, is characterized in that, described oil pump assembly is the quantitative oil pump assembly.
3. Large-scale Hydraulic Pumping Station according to claim 1, is characterized in that, the output pipe of every group of oil pump assembly is provided with a pressure regulation assembly.
4. Large-scale Hydraulic Pumping Station according to claim 1, is characterized in that, every group of oil pump assembly is connected with fuel tank by a self-sealing oil filter.
5. Large-scale Hydraulic Pumping Station according to claim 1, is characterized in that, the quantity of described oil pump assembly is three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104218986A CN103157686A (en) | 2011-12-15 | 2011-12-15 | Large hydraulic pump station with step-less adjustable pressure and flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104218986A CN103157686A (en) | 2011-12-15 | 2011-12-15 | Large hydraulic pump station with step-less adjustable pressure and flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103157686A true CN103157686A (en) | 2013-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104218986A Pending CN103157686A (en) | 2011-12-15 | 2011-12-15 | Large hydraulic pump station with step-less adjustable pressure and flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103157686A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502307A (en) * | 1982-02-18 | 1985-03-05 | Rudolf Grunewald | Wire bending machine |
| JPS62207513A (en) * | 1986-03-06 | 1987-09-11 | Mitsubishi Heavy Ind Ltd | Extrusion forming device for fiber reinforce metallic composite material |
| CN101177930A (en) * | 2007-05-28 | 2008-05-14 | 中交第二公路工程局有限公司 | High-low pump combination hydraulic system |
| CN201326556Y (en) * | 2008-12-17 | 2009-10-14 | 广东科达机电股份有限公司 | Novel double-pump type pump station |
| CN102141063A (en) * | 2011-04-22 | 2011-08-03 | 广东科达机电股份有限公司 | Large-scale upper oil tank hydraulic power unit |
| CN102182725A (en) * | 2011-04-22 | 2011-09-14 | 广东科达机电股份有限公司 | Large step variable control multi-link energy-saving hydraulic pump station |
| CN202387755U (en) * | 2011-12-15 | 2012-08-22 | 广东科达机电股份有限公司 | Large hydraulic pump station with step-less adjustable pressure and flow |
-
2011
- 2011-12-15 CN CN2011104218986A patent/CN103157686A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502307A (en) * | 1982-02-18 | 1985-03-05 | Rudolf Grunewald | Wire bending machine |
| JPS62207513A (en) * | 1986-03-06 | 1987-09-11 | Mitsubishi Heavy Ind Ltd | Extrusion forming device for fiber reinforce metallic composite material |
| CN101177930A (en) * | 2007-05-28 | 2008-05-14 | 中交第二公路工程局有限公司 | High-low pump combination hydraulic system |
| CN201326556Y (en) * | 2008-12-17 | 2009-10-14 | 广东科达机电股份有限公司 | Novel double-pump type pump station |
| CN102141063A (en) * | 2011-04-22 | 2011-08-03 | 广东科达机电股份有限公司 | Large-scale upper oil tank hydraulic power unit |
| CN102182725A (en) * | 2011-04-22 | 2011-09-14 | 广东科达机电股份有限公司 | Large step variable control multi-link energy-saving hydraulic pump station |
| CN202387755U (en) * | 2011-12-15 | 2012-08-22 | 广东科达机电股份有限公司 | Large hydraulic pump station with step-less adjustable pressure and flow |
Non-Patent Citations (1)
| Title |
|---|
| 毛卫平: "《液压阀》", 30 April 2009, 北京化学工业出版社, article "电液比例压力流量复合控制阀", pages: 224-226 * |
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Application publication date: 20130619 |