CN2795479Y - Digital variable pump - Google Patents
Digital variable pump Download PDFInfo
- Publication number
- CN2795479Y CN2795479Y CN 200420150930 CN200420150930U CN2795479Y CN 2795479 Y CN2795479 Y CN 2795479Y CN 200420150930 CN200420150930 CN 200420150930 CN 200420150930 U CN200420150930 U CN 200420150930U CN 2795479 Y CN2795479 Y CN 2795479Y
- Authority
- CN
- China
- Prior art keywords
- variable
- pump
- microcontroller
- displacement
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a digital variable pump. A pressure sensor for measuring output pressure is arranged on the output end of the variable pump, and a displacement sensor for measuring output flow rate is arranged on a flow controller of the variable pump. Both the pressure sensor and the displacement sensor are connected with an analogue-to-digital converter which is connected with a microcontroller for controlling an output value, and the microcontroller is connected with a relay which is connected with a high speed on-off valve for controlling a variable oil cylinder. The variable pump is a plunger type variable pump or a vane pump type variable pump. The utility model has the advantages of low cost, and capability of working independently and being connected with a computer, and can conveniently realize automatic control by the computer.
Description
Technical field:
The utility model relates to a kind ofly can be realized digital control and realize the digital displacement variable pump of computer controlled automatic, belongs to variable displacement pump control technique field.
Background technique:
Along with the development of modern industry informationization technology, many enterprises have adopted computer to carry out industrial control.Since traditional variable displacement pump control gear can not be directly and computer controlled system integrated, and adopt electronically controlled electrical equipment drive technology to replace oil hydraulic pump, limited the application that variable displacement pump is gone up in a lot of fields, but since hydraulic system have following electric drive system the advantage that can not compare:
1, the power Zhao weight ratio of hydraulic actuator and moment of torsion Zhao ratio of inertias are big, thus hydraulic control system to have an acceleration good, compact structure, little, the lightweight characteristics of size.
2, the rigidity of hydraulic control system is big, promptly exports displacement and is subjected to the influence of outer load little, and the location is accurate, and error is little, and the precision height is electric and pneumatic system is incomparable.
3, the hydraulic oil lubricated effect of can having held concurrently.
So hydraulic system remains a kind of important kind of drive in numerous engineerings field, but its control technique has lagged behind the demand of main frame.Therefore, hydraulic transmission and information technology combine, and are the inexorable trends of hydraulic transmission development.
Summary of the invention:
The purpose of this utility model is: provide a kind of fabricating cost low and carry the digital displacement variable pump of controller, to overcome the deficiencies in the prior art.
The utility model is achieved in that it comprises variable displacement pump (1), output terminal at variable displacement pump (1) is provided with the pressure transducer (2) of measuring delivery pressure, on the flow control device (9) of variable displacement pump (1), be provided with the displacement transducer (3) of measuring output flow, the signal conveys of pressure transducer (2) and displacement transducer (3) is to A/D converter (4), the digital signal of A/D converter (4) is transported to the signal input part of microcontroller (5), and microcontroller (5) outputs a control signal to the high-speed switch valve (8) of controlled variable oil cylinder (7) action; Between microcontroller (5) and high-speed switch valve (8), be connected with the relay (6) that amplifies usefulness as signal, microcontroller (5) output a control signal to relay (6), the signal after relay (6) output is amplified is to high-speed switch valve (8); Relay (6) can adopt power amplifier to replace; Variable displacement pump (1) is plunger variable pump or blade variable displacement pump.
The utility model adopts microcontroller (5) and high-speed switch valve (8) that the pressure and the flow of variable displacement pump (1) output are controlled, and pressure is gathered by pressure transducer (2), delivers to microcontroller (5) after mould/number conversion; The position signal that flow is gathered oil pump flow control gear (9) by displacement transducer is delivered to microcontroller (5) after mould/number conversion; Microcontroller (5) configures desired oil pump variable curve in advance, after then pressure and the flux signal of being gathered being compared, analyzes, output a control signal to high-speed switch valve (8), hydraulic oil by the big end of Speed On-off Valve entering variable oil cylinder (7) piston, the piston of variable oil cylinder (7) is moved by desired direction, change oil pump capacity, thereby realize required control.Owing to adopted such scheme, the utility model is compared with prior art, the utility model not only has cost of production advantage lower, that can work alone, can be connected with the host computer in the manufacture control but also have, and realizes the advantage of computer controlled automatic; And if by computer software control, in principle, this variable displacement pump can carry out variable by the variable curve that any available mathematic(al) representation provides; Therefore, can adapt to multiple control modes such as constant flux control, constant pressure control, permanent power control, given flow and pressure dependence, and can easily realize manyly being difficult to the Variable Control that realizes and can't realize, thereby greatly enrich the Variable Control mode of variable displacement pump with machine control unit.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Embodiment:
Embodiment of the present utility model: all accessories of the present utility model: the variable displacement pump (1) that has flow control device (9), pressure transducer (2), displacement transducer (3), A/D converter (4), microcontroller (5), relay (6) and high-speed switch valve (8) all can adopt the finished product in the existing market, wherein variable displacement pump (1) can adopt plunger variable pump or the blade variable displacement pump finished product of selling on the market, and microcontroller (5) adopts the single-chip microcomputer finished product of selling on the market to get final product, during making, output terminal at variable displacement pump (1) is installed a pressure transducer (2), because the flux signal of oil pump can be by the position signal reflection of flow control device (9), can measure the displacement transducer of output flow (3) by measuring its change in location so go up one of installation at the flow control device (9) of variable displacement pump (1), the output signal of pressure transducer (2) and displacement transducer (3) is connected to A/D converter (4), the output signal of A/D converter (4) is transferred to microcontroller (5), and microcontroller (5) is compared the signal of collection and pre-set oil pump variable curve, analyze, microcontroller (5) is input to control signal as amplifying the relay (6) that control signal is used, action by relay (6) control high-speed switch valve (8), and motion by control high-speed switch valve (8), and then the piston position of controlled variable oil cylinder (7), the piston of variable oil cylinder (7) is moved by desired direction, in control procedure, constantly pressure and flux signal are gathered, with desired variable curve contrast, and send control signal, by the high-speed motion of high-speed switch valve (8), the output value of variable displacement pump (1) is got a desired effect.
Claims (4)
1. digital displacement variable pump, it comprises variable displacement pump (1), it is characterized in that: the output terminal at variable displacement pump (1) is provided with the pressure transducer (2) of measuring delivery pressure, on the flow control device (9) of variable displacement pump (1), be provided with the displacement transducer (3) of measuring output flow, the signal conveys of pressure transducer (2) and displacement transducer (3) is to A/D converter (4), the digital signal of A/D converter (4) is transported to the signal input part of microcontroller (5), and microcontroller (5) outputs a control signal to the high-speed switch valve (8) of controlled variable oil cylinder (7) action.
2. digital displacement variable pump according to claim 1, it is characterized in that: between microcontroller (5) and high-speed switch valve (8), be connected with the relay (6) that amplifies usefulness as signal, microcontroller (5) output a control signal to relay (6), the signal after relay (6) output is amplified is to high-speed switch valve (8).
3. digital displacement variable pump according to claim 2 is characterized in that: relay (6) can adopt power amplifier to replace.
4. digital displacement variable pump according to claim 1 is characterized in that: variable displacement pump (1) is plunger variable pump or blade variable displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150930 CN2795479Y (en) | 2004-12-16 | 2004-12-16 | Digital variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150930 CN2795479Y (en) | 2004-12-16 | 2004-12-16 | Digital variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795479Y true CN2795479Y (en) | 2006-07-12 |
Family
ID=36813234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150930 Expired - Fee Related CN2795479Y (en) | 2004-12-16 | 2004-12-16 | Digital variable pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795479Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019006A (en) * | 2014-06-16 | 2014-09-03 | 福州大学 | Plunger pump variable displacement mechanism control loop |
| CN104074747A (en) * | 2013-03-28 | 2014-10-01 | 上海诺科泵业有限公司 | Digital display screw pump |
| CN109083880A (en) * | 2018-08-17 | 2018-12-25 | 合肥工业大学 | Become discharge capacity with streaming system based on switching flow and the enclosed digital pump for compiling strategy |
| CN110762065A (en) * | 2019-10-30 | 2020-02-07 | 燕山大学 | Digital hydraulic actuator system for closed pump valve composite speed regulation and control method thereof |
-
2004
- 2004-12-16 CN CN 200420150930 patent/CN2795479Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074747A (en) * | 2013-03-28 | 2014-10-01 | 上海诺科泵业有限公司 | Digital display screw pump |
| CN104019006A (en) * | 2014-06-16 | 2014-09-03 | 福州大学 | Plunger pump variable displacement mechanism control loop |
| CN109083880A (en) * | 2018-08-17 | 2018-12-25 | 合肥工业大学 | Become discharge capacity with streaming system based on switching flow and the enclosed digital pump for compiling strategy |
| CN110762065A (en) * | 2019-10-30 | 2020-02-07 | 燕山大学 | Digital hydraulic actuator system for closed pump valve composite speed regulation and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2795479Y (en) | Digital variable pump | |
| CN1614232A (en) | Digital displacement variable pump | |
| CN202490833U (en) | Electrical control system of high-strength cutting line water tank wiredrawing machine | |
| CN201344166Y (en) | Device for driving and controlling precise travel of hydraulic cylinder | |
| CN101994807A (en) | Lever type dynamic output device | |
| CN101004610A (en) | Device for automatic controlling final position of moving element | |
| CN201113645Y (en) | Servo-jar | |
| CN102392844A (en) | Hydraulic cylinder speed and pressure control system | |
| CN201399785Y (en) | Servo drive mechanism of mechanical arm | |
| CN201998460U (en) | Control device on digital controlled press machine | |
| CN2864772Y (en) | Automatic control device for final position of moving parts | |
| CN201321999Y (en) | Adjustment control device of adjustable stator blade of axial flow compressor | |
| CN2868487Y (en) | Automatic precision hydraulic straightening machine | |
| CN201317101Y (en) | Lifting control device for track of pipe tractor | |
| CN109469655B (en) | Quick movement device for oil cylinder and control mode | |
| CN204099336U (en) | Electro-hydraulic servo power cylinder | |
| CN101025208A (en) | Electric-controlled pneumatic control valve for heavy automobile clutch and electric-controlled pneumatic operation system | |
| CN203441609U (en) | Exhaust and brake butterfly valve control system | |
| CN201321873Y (en) | Rotary speed control device of vehicular air-powered engine | |
| CN201251018Y (en) | Energy conservation flow control device | |
| CN201027850Y (en) | Electric-controlled pneumatic control valve and electric-controlled pneumatic operation system used for heavy truck clutch | |
| CN101007327A (en) | Automatic precision hydraulic straightening machine | |
| CN202418098U (en) | Speed and pressure control system of hydraulic cylinder | |
| CN202348447U (en) | Multi-stage speed regulating device of diesel engine | |
| CN202045896U (en) | Energy-saving power device of mechanical pressing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091016 Address after: Chua Jia Guan, Guiyang, Guizhou Province, zip code: 550003 Co-patentee after: Liyuan Hydraulic Co., Ltd. of Aviation Industry Corporation of China Patentee after: Guizhou University Address before: Chua Jia Guan, Guiyang, Guizhou Province, zip code: 550003 Co-patentee before: Guizhou Liyuan Hydraulic Co., Ltd. Patentee before: Guizhou University |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060712 Termination date: 20111216 |