CN104197074B - Integrated electrical liquid drives modulating valve and controlling method - Google Patents
Integrated electrical liquid drives modulating valve and controlling method Download PDFInfo
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- CN104197074B CN104197074B CN201410414844.0A CN201410414844A CN104197074B CN 104197074 B CN104197074 B CN 104197074B CN 201410414844 A CN201410414844 A CN 201410414844A CN 104197074 B CN104197074 B CN 104197074B
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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 a kind of integrated electrical liquid and drive modulating valve and controlling method, comprise valve body, connected spool and valve rod is provided with in valve body, valve rod is connected by the lower piston rod of a flexible connecting sleeve with a two rod symmetrical hydraulic cylinder, and the top of the upper piston rod of two rod symmetrical hydraulic cylinder is provided with valve position detection sensor; And the upper and lower hydraulic fluid port of two rod symmetrical hydraulic cylinder is connected with two oil outlets of double-direction gearpump, double-direction gearpump is connected with motor, is operated by driven by motor double-direction gearpump; And frequency variator is had on common electric machine, frequency variator is connected with single chip control unit.Integrated electrical liquid of the present invention drives modulating valve volume little, lightweight, the mode adopting frequency variator and common drive motor to combine realizes controlling the function of motor, there is reasonable cost performance, delivery pressure and the flow of electricity liquid drive system can adjust automatically with the change of load, extend the life-span of modulating valve, ensure system long-time steady operation, there is very high reliability.
Description
Technical field
The present invention relates to a kind of integrated electrical liquid utilizing plug-in mounting structure to be formed and drive modulating valve and controlling method, 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 fluid such as thermal power generation, nuclear power, chemical industry and controls occasion, is 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 aspect, has the features such as output power is large, fast response time, control accuracy are high, signal transacting is flexible.But traditional electric liquid drives modulating valve to need complicated fluid pipeline, the bulky and hydraulic station of heaviness with, makes troubles to the transportation, installation, maintenance of modulating valve, has been limited in the further genralrlization application that electric liquid drives modulating valve.
Summary of the invention
Bulky, the needs that the present invention is directed to the existence of existing electric liquid driving modulating valve build the problems such as complicated fluid pipeline, the electric liquid driving modulating valve provide a kind of compact structure, needing fluid pipeline to connect hardly.
The technical solution used in the present invention is as follows:
Integrated electrical liquid drives modulating valve, comprise valve body, connected spool and valve rod is provided with in valve body, described valve rod is connected by the lower piston rod of a flexible connecting sleeve with a two rod symmetrical hydraulic cylinder, 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, described double-direction gearpump is connected with motor, is operated by driven by motor double-direction gearpump; And frequency variator is had on common electric machine, frequency variator is connected with single chip control unit.
Described motor is arranged on the ear end face of a cartridge valve valve block by motor installation screw, and double-direction gearpump is arranged on the front-end face of described valve block by double-direction gearpump installation screw; The output shaft of described motor stretches in the through hole that described valve block is opened, and the input shaft of double-direction gearpump also stretches in the through hole that described valve block is opened, and the output shaft of motor and the input shaft of double-direction gearpump are linked together by coupling.
Described repairing fuel tank is arranged on by fuel tank installation screw on the front-end face of valve block, and double-direction gearpump, double-direction gearpump drain tap and safety valve unloading port are surrounded in fuel tank inner chamber.
Described cartridge valve valve block is 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 used for plug-in mounting hydraulic lock, described safety valve plug-in mounting mouth is used for plug-in mounting safety valve, on the upper hydraulic fluid port that described hydraulic oil port receives two rod symmetrical hydraulic cylinder respectively by flexible pipe and lower hydraulic fluid port.
Described cartridge valve valve block is arranged on the side of two rod symmetrical hydraulic cylinder.
Flexibly connect external member, comprise left earrings and auris dextra ring, the groove matched with the top of valve rod is formed in the middle of left earrings and auris dextra ring, left earrings and auris dextra ring are gone here and there at the two ends of great circle pin respectively, one is provided with its intersect vertical axis and the aperture of through great circle pin at the middle part of great circle pin, connect the roundlet pin of great circle pin and seat of honour arc pedestal through one in aperture, described seat of honour arc pedestal is set with one is implemented pretightening force anti-skidding equal power spring to it, and great circle pin, roundlet pin are surrounded by anti-skidding equal power spring; 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 matched 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 great circle pin, roundlet pin skids off pin-and-hole.
A whole set of hydraulic power system is except being connected with except flexible pipe 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, saves space, compact structure.
Described valve position detection sensor detects the displacement distance of upper piston rod, and testing result is fed back to governor valve control device; This distance reflects the opening degree of modulating valve.
Fluid-transporting tubing is provided with controlled parameter detecting sensor.
Controlling method of the present invention is as follows:
By the controlled parameter of governor valve control device setting Pipeline transport fluid, the signal feed back that collects to governor valve control device, is carried out difference conversion with setting value by controlled parameter detecting sensor; The signal of computing gained is exported to frequency variator by governor valve control device again, and frequency variator receives from the signal of governor valve control device, and according to the sense of rotation of control signal determination motor and speed; Driven by motor double-direction gearpump running and to system fuel feeding;
When double-direction gearpump from left to right fuel feeding time, hydraulic oil, first by hydraulic lock, is then entered the epicoele of two rod symmetrical hydraulic cylinder 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 steadily balancedly exported by two rod symmetrical hydraulic cylinder 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 cylinder by lower hydraulic fluid port, promote piston and move 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, and steadily balancedly act on valve rod by the pulling force that two rod symmetrical hydraulic cylinder exports, 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:
Compared with traditional hydraulic driving modulating valve, integrated electrical liquid of the present invention drives modulating valve volume little, lightweight, the mode adopting frequency variator and common drive motor to combine realizes controlling the function of motor, and have reasonable cost performance, delivery pressure and the flow of electric liquid drive system can adjust automatically with the change of load, power consumpiton is little, extend the life-span of modulating valve, ensure system long-time steady operation, there is very high reliability.
The masterpiece that hydraulic actuator exports is used in and flexibly connects in external member, because the roundlet pin and great circle pin that flexibly connect external member can freely rotate, can rotate at the seat of honour and left earrings, auris dextra interannular, can the position difference that causes of the output shaft of automatic straightening actuator and controlling mechanism input shaft disalignment, thus the power effect that actuator exports fast and effeciently is 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 is the structural representation flexibly connecting 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 cylinder, 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 block, 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 block 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:
Entirety 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 are communicated with two rod symmetrical hydraulic cylinder 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 adjustment portion of modulating valve, directly with controlled medium contact, by spool action, can change the orifice size of valve, the parameters such as the pressure of fluid and speed are changed.Valve part is connected with hydraulic driving system, can the signal that transmits of response module.Control module adopts Single-chip Controlling, and in-built Control System Software, can complete the collection of data, process and storage, 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, drives double-direction gearpump to operate by common electric machine 7, and common electric machine 7 has frequency variator, and frequency variator is connected with single chip control unit.Two oil outlets of double-direction gearpump 8 are connected by the hydraulic fluid port up and down 13,15 of hydraulic lock 9 with two rod symmetrical hydraulic cylinder 12, the lower piston rod 16 of two rod symmetrical hydraulic cylinder 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 the ear end face of valve block 23 by motor installation screw 40, and double-direction gearpump 8 is arranged on the front-end face of valve block 23 by double-direction gearpump installation screw 26 and 35.The output shaft of common electric machine 7 stretches in the through hole 41 that cartridge valve valve block 23 is opened, the input shaft of double-direction gearpump 8 also stretches in the through hole 41 that cartridge valve valve block 34 is opened, and the output shaft of common electric machine 7 and the input shaft of double-direction gearpump 8 are linked together by coupling.27 and 36 is the hydraulic fluid port of double-direction gearpump 8, and 31 is the drain tap of double-direction gearpump.Repairing fuel tank 1 is arranged on the front-end face of valve block 23 by fuel tank installation screw 38, and double-direction gearpump 8, double-direction gearpump drain tap 31 and safety valve unloading port 30,33 are surrounded in fuel tank inner chamber.After fuel tank pours into hydraulic oil, double-direction gearpump 8 is just dipped in hydraulic oil.
As required, cartridge valve valve block 23 processes a series of valve plug-in opening and liquid flow channel for oil.2 hydraulic lock 9 are arranged in hydraulic lock plug-in mounting mouth 25,37 respectively, and 2 safety valves 2 are arranged in safety valve plug-in mounting mouth 28,34 respectively, and one-way valve 3,4,5,6 and filter 22 are arranged on double-direction gearpump 8 respectively.The hydraulic oil port 24,39 that valve block 23 is external, on the upper hydraulic fluid port 13 receiving two rod symmetrical hydraulic cylinder 12 respectively by flexible pipe and lower hydraulic fluid port 15.Like this, a whole set of hydraulic power system is except being connected with except flexible pipe between hydraulic oil port and two rod symmetrical hydraulic cylinder 12, and all the other are everywhere all without hydraulic pipe line, and system architecture height is integrated, saves space, compact structure.
Flexibly connect external member, comprise left earrings 18-1 and auris dextra ring 18-8, the groove matched with the top of valve rod is formed in the middle of left earrings 18-1 and auris dextra ring 18-8, left earrings 18-1 and auris dextra ring 18-8 goes here and there at the two ends of great circle pin respectively, one is provided with its intersect vertical axis and the aperture of through great circle pin at the middle part of great circle pin, connect the roundlet pin 18-4 of great circle pin 18-3 and seat of honour arc pedestal through one in aperture, described seat of honour arc pedestal 18-10 is set with one is implemented pretightening force anti-skidding equal power spring to it, anti-skidding equal power spring is by great circle pin, roundlet pin is surrounded, anti-skidding equal power spring 18-5 upper end portion withstands on the 18-6 of 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 18-7 matched 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 great circle pin, roundlet pin skids off pin-and-hole.Be connected by bolt 18-2 between left earrings with auris dextra ring.
After the masterpiece exported when oil hydraulic cylinder is used in and flexibly connects external member, active force by the seat of honour, seat of honour curved support frame, roundlet pin, great circle pin, left earrings and auris dextra ring, valve rod, will pass to spool, adjust the opening degree of control valve.
Due in the as installed process of control valve, be difficult to accomplish that piston and valve rod are completely coaxial completely, may unbalance loading be there is in the power therefore acted on valve rod, if adopt traditional being rigidly connected between piston-rod lower end and valve rod, then easily cause the valve rod of control valve to be bent, cause control valve generation jam phenomenon.Adopt of the present invention flexibly connect external member after, when piston-rod lower end and valve rod disalignment, because roundlet pin and great circle pin can freely rotate, can rotate at the seat of honour and left earrings, auris dextra interannular, can the position difference that causes of automatic straightening piston-rod lower end and valve rod disalignment, thus the power that oil hydraulic cylinder 1 exports fast and effeciently is passed to spool, avoid the control valve jam phenomenon that disalignment causes, extend the life-span of control valve, improve speed of response and the control accuracy of control valve.
Fig. 3 gives control principle of the present invention.Valve position detection sensor is provided with on upper piston rod 11 top of two rod symmetrical hydraulic cylinder 12.Valve position detection sensor detects the displacement distance of upper piston rod 11, and testing result is fed back to governor valve control device, and this distance reflects the opening degree of modulating valve.Controlled parameter detecting sensor is arranged on fluid-transporting tubing, for carrying the controlled parameter of fluid in testing pipes, as pressure, flow etc.By the controlled parameter of governor valve control device setting Pipeline transport fluid, as the pressure and flow etc. of fluid, controlled parameter detecting sensor by the signal feed back that collects to governor valve control device, difference conversion is carried out with setting value, according to control algorithm, the signal of computing gained is exported to frequency variator by governor valve control device again, and the aperture of hydraulic control drive system to modulating valve adjusts, with the controlled parameter of stable Pipeline transport fluid, as flow and pressure etc.
Frequency variator receives from the signal of governor valve control device, and according to the sense of rotation of control signal determination common electric machine 7 and speed.Common electric machine 7 drives double-direction gearpump 8 to operate and to system fuel feeding.As shown in Figure 1, when double-direction gearpump 8 from left to right fuel feeding time, hydraulic oil, first by hydraulic lock 9, is then entered the epicoele of two rod symmetrical hydraulic cylinder 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 steadily balancedly exported by two rod symmetrical hydraulic cylinder 12 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 cylinder 12 by lower hydraulic fluid port 15, promote piston 14 and move 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 act on valve rod 10 by the pulling force that two rod symmetrical hydraulic cylinder 12 exports, 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 Time Delay to the impact of control system, O.J.M.Smith proposes a kind of time lag compensation method, i.e. smith Prediction Control algorithm.In the present invention, in order to eliminate the time lag characteristic of pipe-line transportation system to the impact of modulating valve control performance, intelligent complex control algorithm serials control and Smith Prediction Control being carried out compound is proposed.The difference of signal that the controlled parameter being input as Pipeline transport fluid of previous controller and controlled parameter detecting sensor will collect; The output of previous controller is as the setting value of next controller; The output value being 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; The previous PID controller be on main ring is master controller, the rear PID controller be on inner loop is after submaster controller adopts intelligent complex control algorithm of the present invention, the influence degree of Parameters variation to system gain of each link diminishes, control system allows the characteristic of each link to change within the specific limits, and do not affect the Control platform of whole system, namely system has good adaptive ability.
Claims (8)
1. integrated electrical liquid drives modulating valve, comprise valve body, connected spool and valve rod is provided with in valve body, it is characterized in that: described valve rod is connected by the lower piston rod of a flexible connecting sleeve with a two rod symmetrical hydraulic cylinder, 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, described double-direction gearpump is connected with motor, is operated by driven by motor double-direction gearpump; And frequency variator is had on common electric machine, frequency variator is connected with single chip control unit;
Described flexibly connects external member, comprise left earrings and auris dextra ring, the groove matched with the top of valve rod is formed in the middle of left earrings and auris dextra ring, left earrings and auris dextra ring are gone here and there at the two ends of great circle pin respectively, one is provided with its intersect vertical axis and the aperture of through great circle pin at the middle part of great circle pin, connect the roundlet pin of great circle pin and seat of honour arc pedestal through one in aperture, described seat of honour arc pedestal is set with one is implemented pretightening force anti-skidding equal power spring to it, and great circle pin, roundlet pin are surrounded by anti-skidding equal power spring; 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 matched with piston rod;
Two oil outlets of described double-direction gearpump are connected by the hydraulic fluid port up and down of hydraulic lock with two rod symmetrical hydraulic cylinder.
2. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: described motor is arranged on the ear end face of a cartridge valve valve block by motor installation screw, double-direction gearpump is arranged on the front-end face of described valve block by double-direction gearpump installation screw; The output shaft of described motor stretches in the through hole that described valve block is opened, and the input shaft of double-direction gearpump also stretches in the through hole that described valve block is opened, and the output shaft of motor and the input shaft of double-direction gearpump are linked together by coupling.
3. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: also comprise a repairing fuel tank, described repairing fuel tank is arranged on by fuel tank installation screw on the front-end face of valve block, and double-direction gearpump, double-direction gearpump drain tap and safety valve unloading port are surrounded in fuel tank inner chamber.
4. integrated electrical liquid as claimed in claim 2 drives modulating valve, it is characterized in that: described cartridge valve valve block is 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 used for plug-in mounting hydraulic lock, described safety valve plug-in mounting mouth is used for plug-in mounting safety valve, on the upper hydraulic fluid port that described hydraulic oil port receives two rod symmetrical hydraulic cylinder respectively by flexible pipe and lower hydraulic fluid port.
5. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: on fluid-transporting tubing, be provided with controlled parameter detecting sensor.
6. integrated electrical liquid as claimed in claim 1 drives modulating valve, it is characterized in that: left earrings and auris dextra ring are symmetrical arranged, and form I-shaped groove.
7. integrated electrical liquid as claimed in claim 1 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 great circle pin, roundlet pin skids off pin-and-hole.
8. integrated electrical liquid as claimed in claim 1 drives the controlling method of modulating valve, it is characterized in that:
By the controlled parameter of governor valve control device setting Pipeline transport fluid, the signal feed back that collects to governor valve control device, is carried out difference conversion with setting value by controlled parameter detecting sensor; According to control algorithm, the signal of computing gained is exported to frequency variator by governor valve control device again, and frequency variator receives from the signal of governor valve control device, and according to the sense of rotation of control signal determination motor and speed; Driven by motor double-direction gearpump running and to system fuel feeding;
When double-direction gearpump from left to right fuel feeding time, hydraulic oil, first by hydraulic lock, is then entered the epicoele of two rod symmetrical hydraulic cylinder 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 steadily balancedly exported by two rod symmetrical hydraulic cylinder 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 cylinder by lower hydraulic fluid port, promote piston and move 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, and steadily balancedly act on valve rod by the pulling force that two rod symmetrical hydraulic cylinder exports, 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 true CN104197074B (en) | 2015-09-02 |
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| WO2016026391A1 (en) * | 2014-08-21 | 2016-02-25 | 山东大学 | Integrated electro-hydraulic driven regulating valve and control method |
| CN106838379B (en) * | 2015-12-07 | 2020-09-29 | 浙江三花制冷集团有限公司 | Electric switching valve |
| CN105650289B (en) * | 2016-03-08 | 2019-02-26 | 陈国顺 | Suitable for program-controlled shut-off valve |
| 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 |
| CN108317289B (en) * | 2017-12-29 | 2019-09-10 | 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 |
| CN109812615B (en) * | 2019-03-18 | 2023-06-27 | 山东大学 | Regulating valve system and method with energy regeneration function |
| CN112963560B (en) * | 2021-04-16 | 2022-03-29 | 江苏理工学院 | Electro-hydraulic drive gas gate valve with stress detection function and control system |
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| US4132071A (en) * | 1977-10-11 | 1979-01-02 | Hills-Mccanna Company | Electro-hydraulic controlled valve actuator system |
| CN2246740Y (en) * | 1995-10-20 | 1997-02-05 | 煤炭科学研究院唐山分院 | Electric-control hydraulic driver of driving valve |
| CN201057155Y (en) * | 2007-06-29 | 2008-05-07 | 邵建农 | Hydraulic flashboard type stuff pump control valve |
| CN201162841Y (en) * | 2008-02-28 | 2008-12-10 | 朱玉民 | Hydraulic closing and opening valve |
| CN201306149Y (en) * | 2008-12-01 | 2009-09-09 | 什邡慧丰采油机械有限责任公司 | Wellhead safety hydraulic cutoff device |
| CN101598232B (en) * | 2009-07-20 | 2011-01-26 | 山东大学 | Electro-hydraulic driver of control valve |
| CN201909095U (en) * | 2011-01-12 | 2011-07-27 | 浙江博恩自控阀门有限公司 | Electro-hydraulic linkage actuating mechanism |
| CN204099686U (en) * | 2014-08-21 | 2015-01-14 | 山东大学 | Integrated electrical liquid drives modulating valve |
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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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