CN104197074A - Integrated type electro-hydraulic drive regulating valve and control method - Google Patents
Integrated type electro-hydraulic drive regulating valve and control method Download PDFInfo
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- CN104197074A CN104197074A CN201410414844.0A CN201410414844A CN104197074A CN 104197074 A CN104197074 A CN 104197074A CN 201410414844 A CN201410414844 A CN 201410414844A CN 104197074 A CN104197074 A CN 104197074A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an integrated type electro-hydraulic drive regulating valve and a control method. The integrated type electro-hydraulic drive regulating valve comprises a valve body, a valve element and a valve rod which are connected are arranged in the valve body, the valve rod is connected with a lower piston rod of a double-outlet-rod-symmetrical hydraulic cylinder through a flexible connection sleeve, and a valve position detection sensor is arranged at the top end of an upper piston rod of the double-outlet-rod-symmetrical hydraulic cylinder. In addition, an upper oil port and a lower oil port of the double-outlet-rod-symmetrical hydraulic cylinder are communicated with two oil outlets of a two-way gear pump, and the two-way gear pump is connected with a motor and driven by the motor to operate. A frequency changer is arranged on a common motor and connected with a single-chip microcomputer control unit. The integrated type electro-hydraulic drive regulating valve is small in size and light, the function of controlling the motor is achieved in the mode that the frequency changer is combined with the common motor, the good cost performance is achieved, the output pressure and the flow of an electro-hydraulic drive system can be automatically regulated along with changes of loads, the service life of the regulating valve is prolonged, long-time stable operation of the system is guaranteed, and high reliability is achieved.
Description
Technical field
The present invention relates to a kind of integrated electrical liquid driving modulating valve and controlling method of utilizing plug-in mounting structure to form, belong to modulating valve technical field.
Background technique
Modulating valve is one of key equipment of industrial process control system, is widely used in the fluids such as thermal power generation, nuclear power, chemical industry and controls occasion, and be the most frequently used final controlling elements of industrial processes.Electricity liquid drives modulating valve to combine the advantage of electronic technology and hydraulics two aspects, has the features such as output power is large, fast response time, control accuracy is high, signal processing is flexible.But traditional electric liquid drives modulating valve to need complicated fluid pipeline, with a bulky and heavy hydraulic station, make troubles to the transportation, installation, maintenance of modulating valve, be limited in electric liquid and driven further applying of modulating valve.
Summary of the invention
The present invention is directed to that existing electric liquid drives that modulating valve exists bulky, need to build the complicated problems such as fluid pipeline, a kind of compact structure is provided, needs the electric liquid that fluid pipeline connects to drive modulating valve hardly.
The technical solution used in the present invention is as follows:
Integrated electrical liquid drives modulating valve, comprise valve body, in valve body, be provided with connected spool and valve rod, described valve rod is connected with the lower piston rod of two rod symmetrical hydraulic cylinders by a flexible connecting sleeve, and the top of the upper piston rod of described two rod symmetrical hydraulic cylinders is provided with valve position detection sensor; And the upper and lower hydraulic fluid port of described two rod symmetrical hydraulic cylinders is connected with two oil outlets of double-direction gearpump, and described double-direction gearpump is connected with motor, by driven by motor double-direction gearpump, is turned round; And on common electric machine, have frequency variator, frequency variator is connected with Single-chip Controlling unit.
Described motor is arranged on by motor installation screw on the ear end face of a cartridge valve valve piece, and double-direction gearpump is arranged on the front-end face of described valve piece by double-direction gearpump installation screw; The output shaft of described motor stretches in the through hole of opening on described valve piece, and the input shaft of double-direction gearpump also stretches in the through hole of opening on described valve piece, and the output shaft of motor and the input shaft of double-direction gearpump link together by coupling.
Described repairing fuel tank is arranged on by fuel tank installation screw on the front-end face of valve piece, and double-direction gearpump, double-direction gearpump drain tap and safety valve unloading port are surrounded in fuel tank inner chamber.
On described cartridge valve valve piece, be also provided with hydraulic lock plug-in mounting mouth, safety valve plug-in mounting mouth, hydraulic oil port, described hydraulic lock plug-in mounting mouth is for plug-in mounting hydraulic lock, described safety valve plug-in mounting mouth is for plug-in mounting safety valve, and described hydraulic oil port is received respectively on the upper hydraulic fluid port and lower hydraulic fluid port of two rod symmetrical hydraulic cylinders by flexible pipe.
Described cartridge valve valve piece is arranged on a side of two rod symmetrical hydraulic cylinders.
Flexibly connect external member, comprise left earrings and auris dextra ring, in the middle of left earrings and auris dextra ring, form the groove matching with the top of valve rod, left earrings and auris dextra ring are gone here and there respectively at the two ends of great circle pin, at the middle part of great circle pin, be provided with one with its intersect vertical axis and connect the aperture of great circle pin, in aperture, pass a roundlet pin that connects great circle pin and seat of honour arc pedestal, on described seat of honour arc pedestal, be set with an anti-skidding equal power spring that it is implemented to pretightening force, anti-skidding equal power spring is surrounded great circle pin, roundlet pin; Anti-skidding equal power spring upper end portion withstands on the seat of honour, and underpart withstands on left earrings and auris dextra ring, and the described seat of honour is provided with the head threads matching with piston rod.
Left earrings and auris dextra ring are symmetrical arranged, and form I-shaped groove.
The length of great circle pin, roundlet pin is all less than the internal diameter of anti-skidding equal power spring, therefore anti-skidding equal power spring can prevent that great circle pin, roundlet pin from skidding off pin-and-hole.
A whole set of hydraulic power system is connected with flexible pipe except between hydraulic oil port and two rod symmetrical hydraulic cylinder, and all the other are everywhere all without hydraulic pipe line, and system architecture height is integrated, has saved space, compact structure.
Described valve position detection sensor detects the displacement distance of upper piston rod, and testing result is fed back to modulating valve controller; This is apart from the opening degree that has reflected modulating valve.
Controlled parameter detecting sensor is installed on fluid-transporting tubing.
Controlling method of the present invention is as follows:
By modulating valve controller, set the controlled parameter of Pipeline transport fluid, controlled parameter detecting sensor to modulating valve controller, carries out difference conversion with setting value by the signal feed back collecting; Modulating valve controller is exported to frequency variator by the signal of computing gained again, and frequency variator receives the signal of self-regulating valve controller, and according to control signal, determines sense of rotation and the speed of motor; Driven by motor double-direction gearpump running to system fuel feeding;
When double-direction gearpump is from left to right during fuel feeding, hydraulic oil, first by hydraulic lock, is then entered the epicoele of two rod symmetrical hydraulic cylinders by upper hydraulic fluid port, promote piston and move downward with upper piston rod and lower piston rod; Lower piston rod acts on and flexibly connects in external member, flexibly connects external member by self-regulation effect, and the thrust of steadily balancedly two rod symmetrical hydraulic cylinders being exported is on valve rod, and the spool that valve rod promotes modulating valve again moves downward, and reduces the aperture of modulating valve;
When double-direction gearpump right-to-left fuel feeding, hydraulic oil, first by hydraulic lock, is then entered the cavity of resorption of two rod symmetrical hydraulic cylinders by lower hydraulic fluid port, promotes piston and moves upward with upper piston rod and lower piston rod.Lower piston rod acts on and flexibly connects in external member, flexibly connects external member by self-regulation effect, steadily balancedly the pulling force of two rod symmetrical hydraulic cylinder outputs is acted on valve rod, and valve rod draws the spool of modulating valve to move upward again, increases the aperture of modulating valve.
Beneficial effect of the present invention is as follows:
Compare with traditional hydraulic driving modulating valve, integrated electrical liquid of the present invention drives modulating valve volume little, lightweight, adopt the mode of frequency variator and the combination of common drive motor to realize the function of controlling motor, have reasonable cost performance, the delivery pressure of electric liquid drive system and flow can be adjusted automatically with the variation of load, power consumpiton is little, extend the life-span of modulating valve, guaranteed system long-time steady operation, there is very high reliability.
The masterpiece of hydraulic actuator output is used in and flexibly connects in external member, owing to flexibly connecting roundlet pin and the great circle pin of external member, can freely rotate, at the seat of honour and left earrings, auris dextra interannular, can rotate, output shaft that can automatic straightening actuator and the position difference that controlling mechanism input shaft disalignment causes, thereby the power effect of actuator's output is fast and effeciently passed to controlling mechanism, change the aperture of control valve.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is hydraulic system plug-in mounting structure schematic diagram in the present invention;
Fig. 3 is control principle schematic diagram of the present invention;
Fig. 4 is the control algorithm schematic diagram of singlechip controller in the present invention;
Fig. 5 flexibly connects the structural representation of external member in the present invention;
Fig. 6 is the A-A sectional view of Fig. 2;
In figure: 1, repairing fuel tank, 2, safety valve, 3, 4, 5, 6, one-way valve, 7, motor, 8, double-direction gearpump, 9, hydraulic lock, 10, valve rod, 11, upper piston rod, 12, two rod symmetrical hydraulic cylinders, 13, upper hydraulic fluid port, 14, piston, 15, lower hydraulic fluid port, 16, lower piston rod, 17, support, 18, flexibly connect external member, 18-1, left earrings, 18-2, bolt, 18-3, great circle pin, 18-4, roundlet pin, 18-5, anti-skidding equal power spring, 18-6, the seat of honour, 18-7, head threads, 18-8, auris dextra ring, 18-9, I-shaped groove, 18-10, seat of honour arc pedestal, 19, valve body, 20, spool, 21, oil ga(u)ge, 22, filter, 23, cartridge valve valve piece, 24,39, hydraulic oil port, 25,37, hydraulic lock plug-in mounting mouth, 26,35, double-direction gearpump installation screw, 27,36, double-direction gearpump hydraulic fluid port, 28,34, safety valve plug-in mounting mouth, 29,32, valve piece installation screw, 30,33, safety valve unloading port, 31 gear pump unloading ports, 38, fuel tank installation screw, 40, motor installation screw, 41, through hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
Integral body of the present invention comprise plug-in mounting structure Closed Hydraulic Driving system, connect drive system and valve rod flexibly connect external member, valve part and control module.Hydraulic driving system is the closed system of plug-in mounting structure, for the openings of sizes of regulating and controlling valve, comprises frequency variator, motor, double-direction gearpump, filter, one-way valve, safety valve, hydraulic lock, two rod symmetrical hydraulic cylinder 12.Frequency variator is connected with control module, receives the output signal of control module.Motor 7 is driving common electric machine, and its guide line is connected with frequency variator, and output shaft is connected with double-direction gearpump 8.Two hydraulic fluid ports of double-direction gearpump 8 communicate with two rod symmetrical hydraulic cylinders 12 by hydraulic lock 9, and the piston rod of oil hydraulic cylinder is connected with the valve rod 10 of modulating valve valve part by flexibly connecting external member.Valve part is the adjusting part of modulating valve, directly, with controlled medium contact, by spool, moves, and can change the orifice size of valve, and the parameters such as the pressure of fluid and speed are changed.Valve part is connected with hydraulic driving system, the signal can response module transmitting.Control module adopts Single-chip Controlling, and in-built Control System Software, can complete collection, processing and the storage of data, and can carry out telecommunication with upper-position unit.
Concrete structure is as follows:
As shown in Figure 1, integrated electrical liquid of the present invention drives modulating valve to comprise repairing fuel tank 1, safety valve 2, one-way valve 3-6, common electric machine 7, double-direction gearpump 8, hydraulic lock 9, two rod symmetrical hydraulic cylinder 12, support 17, flexibly connect external member 18, valve body 19 etc.Double-direction gearpump 8 is connected with common electric machine 7, by common electric machine 7, drives double-direction gearpump to turn round, and on common electric machine 7, has frequency variator, and frequency variator is connected with Single-chip Controlling unit.Two oil outlets of double-direction gearpump 8 are connected with the hydraulic fluid port up and down 13,15 of two rod symmetrical hydraulic cylinders 12 by hydraulic lock 9, the lower piston rod 16 of two rod symmetrical hydraulic cylinders is connected with valve rod 10 by flexibly connecting external member 18, and valve rod 10 is connected with the spool 20 of modulating valve again.
Fig. 2 is hydraulic system plug-in mounting structure figure of the present invention, and common electric machine 7 is arranged on by motor installation screw 40 on the ear end face of valve piece 23, and double-direction gearpump 8 is arranged on the front-end face of valve piece 23 by double-direction gearpump installation screw 26 and 35.The output shaft of common electric machine 7 stretches in the through hole 41 of opening on cartridge valve valve piece 23, the input shaft of double-direction gearpump 8 also stretches in the through hole 41 of opening on cartridge valve valve piece 34, and the input shaft of the output shaft of common electric machine 7 and double-direction gearpump 8 links together by coupling.27 and 36 is the hydraulic fluid port of double-direction gearpump 8,31 drain taps that are double-direction gearpump.Repairing fuel tank 1 is arranged on by fuel tank installation screw 38 on the front-end face of valve piece 23, and double-direction gearpump 8, double-direction gearpump drain tap 31He safety valve unloading port 30,33 are surrounded in fuel tank inner chamber.When fuel tank pours into after hydraulic oil, double-direction gearpump 8 is just dipped in hydraulic oil.
As required, on cartridge valve valve piece 23, process a series of valve plug-in openings and liquid flow channel for oil.2 hydraulic lock 9 are arranged on respectively in hydraulic lock plug-in mounting mouth 25,37, and 2 safety valves 2 are arranged on respectively in safety valve plug-in mounting mouth 28,34, and one-way valve 3,4,5,6 and filter 22 are arranged on respectively on double-direction gearpump 8.The hydraulic oil port 24,39 that valve piece 23 is external, receives respectively by flexible pipe on the upper hydraulic fluid port 13 and lower hydraulic fluid port 15 of two rod symmetrical hydraulic cylinders 12.Like this, a whole set of hydraulic power system is connected with flexible pipe except hydraulic oil port and two 12 of rod symmetrical hydraulic cylinders, and all the other are everywhere all without hydraulic pipe line, and system architecture height is integrated, has saved space, compact structure.
Flexibly connect external member, comprise left earrings 18-1 and auris dextra ring 18-8, in the middle of left earrings 18-1 and auris dextra ring 18-8, form the groove matching with the top of valve rod, left earrings 18-1 and auris dextra ring 18-8 go here and there respectively at the two ends of great circle pin, at the middle part of great circle pin, be provided with one with its intersect vertical axis and connect the aperture of great circle pin, in aperture, pass a roundlet pin 18-4 who connects great circle pin 18-3 and seat of honour arc pedestal, on described seat of honour arc pedestal 18-10, be set with one it is implemented to the anti-skidding equal power spring of pretightening force, anti-skidding equal power spring is by great circle pin, roundlet pin is surrounded, it is upper that anti-skidding equal power spring 18-5 upper end portion withstands on seat of honour 18-6, and underpart withstands on left earrings and auris dextra ring, and the described seat of honour is provided with the head threads 18-7 matching with piston rod.Left earrings and auris dextra ring are symmetrical arranged, and form I-shaped groove 18-9.The length of great circle pin, roundlet pin is all less than the internal diameter of anti-skidding equal power spring, therefore anti-skidding equal power spring can prevent that great circle pin, roundlet pin from skidding off pin-and-hole.Between left earrings and auris dextra ring, by bolt 18-2, be connected.
When the masterpiece of oil hydraulic cylinder output is used in, flexibly connect after external member, active force will pass to spool by the seat of honour, seat of honour arc supporting frame, roundlet pin, great circle pin, left earrings and auris dextra ring, valve rod, the opening degree of adjustment control valve.
In the as installed process at control valve, be difficult to accomplish that piston and valve rod are completely coaxial completely, may there is unbalance loading in the power therefore acting on valve rod, if adopt traditional being rigidly connected between piston-rod lower end and valve rod, easily cause the valve rod of control valve to be bent, cause control valve generation jam phenomenon.Adopt of the present invention flexibly connecting after external member, when piston-rod lower end and valve rod disalignment, because roundlet pin and great circle pin can freely rotate, at the seat of honour and left earrings, auris dextra interannular, can rotate, can automatic straightening piston-rod lower end and the position difference that causes of valve rod disalignment, thereby the power of oil hydraulic cylinder 1 output is fast and effeciently passed to spool, the control valve jam phenomenon of having avoided disalignment to cause, extend the life-span of control valve, improved speed of response and the control accuracy of control valve.
Fig. 3 has provided control principle of the present invention.Upper piston rod 11 tops at two rod symmetrical hydraulic cylinders 12 are provided with valve position detection sensor.Valve position detection sensor detects the displacement distance of upper piston rod 11, and testing result is fed back to modulating valve controller, and this is apart from the opening degree that has reflected modulating valve.Controlled parameter detecting sensor is arranged on fluid-transporting tubing, for detection of the controlled parameter of carrying fluid in pipeline, as pressure, flow etc.By modulating valve controller, set the controlled parameter of Pipeline transport fluid, as the pressure of fluid and flow etc., controlled parameter detecting sensor arrives modulating valve controller by the signal feed back collecting, carry out difference conversion with setting value, according to control algorithm, modulating valve controller is exported to frequency variator by the signal of computing gained again, controls hydraulic driving system the aperture of modulating valve is adjusted, to stablize the controlled parameter of Pipeline transport fluid, as flow and pressure etc.
Frequency variator receives the signal of self-regulating valve controller, and according to control signal, determines sense of rotation and the speed of common electric machine 7.Common electric machine 7 drives double-direction gearpumps 8 runnings and to system fuel feeding.As shown in Figure 1, when double-direction gearpump 8 is from left to right during fuel feeding, hydraulic oil, first by hydraulic lock 9, is then entered the epicoele of two rod symmetrical hydraulic cylinders 12 by upper hydraulic fluid port 13, promote piston 14 and move downward with upper piston rod 11 and lower piston rod 16.Lower piston rod 16 acts on and flexibly connects in external member 18, flexibly connect external member 18 by self-regulation effect, the thrust of steadily balancedly two rod symmetrical hydraulic cylinders 12 being exported is on valve rod 10, and the spool 20 that valve rod 10 promotes modulating valve again moves downward, and reduces the aperture of modulating valve.When double-direction gearpump 8 right-to-left fuel feeding, hydraulic oil, first by hydraulic lock 9, is then entered the cavity of resorption of two rod symmetrical hydraulic cylinders 12 by lower hydraulic fluid port 15, promotes piston 14 and moves upward with upper piston rod 11 and lower piston rod 16.Lower piston rod 16 acts on and flexibly connects in external member 18, flexibly connect external member 18 by self-regulation effect, steadily balancedly the pulling force of two rod symmetrical hydraulic cylinder 12 outputs is acted on valve rod 10, valve rod 10 draws the spool 20 of modulating valve to move upward again, increases the aperture of modulating valve.
Fig. 4 is the control algorithm schematic diagram of singlechip controller in the present invention.Cascade control system is a kind of conventional complex control system.For eliminating the impact of Time Delay on control system, O.J.M.Smith proposes a kind of time lag compensation method, i.e. smith Prediction Control algorithm.In the present invention, for the impact on modulating valve control performance of the time lag characteristic of eliminating pipe-line transportation system, proposed tandem to control with Smith Prediction Control and carry out compound Intelligent Composite control algorithm.The controlled parameter that is input as Pipeline transport fluid of previous controller and controlled parameter detecting sensor are by the difference of the signal collecting; The output of previous controller is as the setting value of next controller; The output value that is input as previous controller of a rear controller and the difference of control valve position value of feedback; A rear controller export to modulating valve; Previous PID controller on main ring is master controller, a rear PID controller on inner loop is that submaster controller adopts after Intelligent Composite control algorithm of the present invention, the parameter of each link changes the influence degree of system gain is diminished, control system allows the characteristic of each link to change within the specific limits, and do not affect the control quality of whole system, system has good adaptive ability.
Claims (10)
1. integrated electrical liquid drives modulating valve, comprise valve body, in valve body, be provided with connected spool and valve rod, it is characterized in that: described valve rod is connected with the lower piston rod of two rod symmetrical hydraulic cylinders by a flexible connecting sleeve, and the top of the upper piston rod of described two rod symmetrical hydraulic cylinders is provided with valve position detection sensor; And the upper and lower hydraulic fluid port of described two rod symmetrical hydraulic cylinders is connected with two oil outlets of double-direction gearpump, and described double-direction gearpump is connected with motor, by driven by motor double-direction gearpump, is turned round; And on common electric machine, have frequency variator, frequency variator is connected with Single-chip Controlling unit.
2. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: two oil outlets of described double-direction gearpump are connected with the hydraulic fluid port up and down of two rod symmetrical hydraulic cylinders by hydraulic lock.
3. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: described motor is arranged on by motor installation screw on the ear end face of a cartridge valve valve piece, and double-direction gearpump is arranged on the front-end face of described valve piece by double-direction gearpump installation screw; The output shaft of described motor stretches in the through hole of opening on described valve piece, and the input shaft of double-direction gearpump also stretches in the through hole of opening on described valve piece, and the output shaft of motor and the input shaft of double-direction gearpump link together by coupling.
4. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: described repairing fuel tank is arranged on by fuel tank installation screw on the front-end face of valve piece, and double-direction gearpump, double-direction gearpump drain tap and safety valve unloading port are surrounded in fuel tank inner chamber.
5. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: on described cartridge valve valve piece, be also provided with hydraulic lock plug-in mounting mouth, safety valve plug-in mounting mouth, hydraulic oil port, described hydraulic lock plug-in mounting mouth is for plug-in mounting hydraulic lock, described safety valve plug-in mounting mouth is for plug-in mounting safety valve, and described hydraulic oil port is received respectively on the upper hydraulic fluid port and lower hydraulic fluid port of two rod symmetrical hydraulic cylinders by flexible pipe.
6. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: controlled parameter detecting sensor is installed on fluid-transporting tubing.
7. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: the described external member that flexibly connects, comprise left earrings and auris dextra ring, in the middle of left earrings and auris dextra ring, form the groove matching with the top of valve rod, left earrings and auris dextra ring are gone here and there respectively at the two ends of great circle pin, at the middle part of great circle pin, be provided with one with its intersect vertical axis and connect the aperture of great circle pin, in aperture, pass a roundlet pin that connects great circle pin and seat of honour arc pedestal, on described seat of honour arc pedestal, be set with one it is implemented to the anti-skidding equal power spring of pretightening force, anti-skidding equal power spring is by great circle pin, roundlet pin is surrounded, anti-skidding equal power spring upper end portion withstands on the seat of honour, and underpart withstands on left earrings and auris dextra ring, and the described seat of honour is provided with the head threads matching with piston rod.
8. integrated electrical liquid as claimed in claim 7 drives modulating valve, it is characterized in that: left earrings and auris dextra ring are symmetrical arranged, and forms I-shaped groove.
9. integrated electrical liquid as claimed in claim 7 drives modulating valve, it is characterized in that: the length of great circle pin, roundlet pin is all less than the internal diameter of anti-skidding equal power spring, therefore anti-skidding equal power spring can prevent that great circle pin, roundlet pin from skidding off pin-and-hole.
10. integrated electrical liquid as claimed in claim 1 drives the controlling method of modulating valve, it is characterized in that:
By modulating valve controller, set the controlled parameter of Pipeline transport fluid, controlled parameter detecting sensor to modulating valve controller, carries out difference conversion with setting value by the signal feed back collecting; According to control algorithm, modulating valve controller is exported to frequency variator by the signal of computing gained again, and frequency variator receives the signal of self-regulating valve controller, and according to control signal, determines sense of rotation and the speed of motor; Driven by motor double-direction gearpump running to system fuel feeding;
When double-direction gearpump is from left to right during fuel feeding, hydraulic oil, first by hydraulic lock, is then entered the epicoele of two rod symmetrical hydraulic cylinders by upper hydraulic fluid port, promote piston and move downward with upper piston rod and lower piston rod; Lower piston rod acts on and flexibly connects in external member, flexibly connects external member by self-regulation effect, and the thrust of steadily balancedly two rod symmetrical hydraulic cylinders being exported is on valve rod, and the spool that valve rod promotes modulating valve again moves downward, and reduces the aperture of modulating valve;
When double-direction gearpump right-to-left fuel feeding, hydraulic oil, first by hydraulic lock, is then entered the cavity of resorption of two rod symmetrical hydraulic cylinders by lower hydraulic fluid port, promotes piston and moves upward with upper piston rod and lower piston rod.Lower piston rod acts on and flexibly connects in external member, flexibly connects external member by self-regulation effect, steadily balancedly the pulling force of two rod symmetrical hydraulic cylinder outputs is acted on valve rod, and valve rod draws the spool of modulating valve to move upward again, increases the aperture of modulating valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414844.0A CN104197074B (en) | 2014-08-21 | 2014-08-21 | Integrated electrical liquid drives modulating valve and controlling method |
| PCT/CN2015/086426 WO2016026391A1 (en) | 2014-08-21 | 2015-08-08 | Integrated electro-hydraulic driven regulating valve and control method |
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| CN201410414844.0A CN104197074B (en) | 2014-08-21 | 2014-08-21 | Integrated electrical liquid drives modulating valve and controlling method |
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| CN104197074B CN104197074B (en) | 2015-09-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026391A1 (en) * | 2014-08-21 | 2016-02-25 | 山东大学 | Integrated electro-hydraulic driven regulating valve and control method |
| CN105650289A (en) * | 2016-03-08 | 2016-06-08 | 陈国顺 | Stop valve suitable for program control |
| CN106286943A (en) * | 2016-10-18 | 2017-01-04 | 汉盛（上海）海洋装备技术股份有限公司 | A kind of electro-hydraulic device |
| CN106838379A (en) * | 2015-12-07 | 2017-06-13 | 浙江三花制冷集团有限公司 | Dynamoelectric switching valve |
| CN108317289A (en) * | 2017-12-29 | 2018-07-24 | 金卡智能集团股份有限公司 | A kind of metering meter valve valve opening control method and close valve control method |
| CN109812615A (en) * | 2019-03-18 | 2019-05-28 | 山东大学 | A kind of regulating valve system and method with energy regeneration function |
| CN112963560A (en) * | 2021-04-16 | 2021-06-15 | 江苏理工学院 | Electro-hydraulic drive gas gate valve with stress detection function and control system |
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Application publication date: 20141210 Assignee: Yangzhou Hengchun Electronic Co., Ltd. Assignor: Shandong University Contract record no.: 2016320000033 Denomination of invention: Integrated type electro-hydraulic drive regulating valve and control method Granted publication date: 20150902 License type: Exclusive License Record date: 20160224 |
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