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CN109630491B - Electric control compensation two-way proportional flow valve - Google Patents

Electric control compensation two-way proportional flow valve Download PDF

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Publication number
CN109630491B
CN109630491B CN201811600410.4A CN201811600410A CN109630491B CN 109630491 B CN109630491 B CN 109630491B CN 201811600410 A CN201811600410 A CN 201811600410A CN 109630491 B CN109630491 B CN 109630491B
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valve
compensation
compensation valve
proportional
pressure compensation
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CN109630491A (en
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权龙�
王波
王翔宇
葛磊
郝云晓
杨敬
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Taiyuan University of Technology
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Taiyuan University of Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/026—Pressure compensating valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
  • Servomotors (AREA)

Abstract

The invention provides an electric control compensation two-way proportional flow valve, which adopts a novel electronic pressure compensation valve or an electro-hydraulic pressure compensation valve, and an oil outlet B of the electronic pressure compensation valve or the electro-hydraulic pressure compensation valve1With main valve oil inlet PAControl cavity P of electronic pressure compensation valve or electro-hydraulic pressure compensation valveFThrough, main valve oil outlet PBWith the second control chamber P of the electronic or electrohydraulic pressure compensating valveEAnd (4) communicating. The invention designs a novel element electronic pressure compensation valve and an electro-hydraulic pressure compensation valve, adopts an electronic control unit to control and detect the position of a compensation valve core, realizes the closed-loop control of the compensation valve core and the continuous regulation and control of compensation differential pressure, improves the flow control precision of the whole valve, enhances the flow regulation rigidity of load change resistance, and has the advantages of simple structure, good dynamic characteristic and high-precision flow steady-state control.

Description

Electric control compensation two-way proportional flow valve
Technical Field
The invention belongs to a two-position two-way proportional flow valve, and particularly relates to an electric control compensation two-way proportional flow valve.
Background
The two-way proportional flow valve is used as a core element of an electro-hydraulic control system of major mechanical equipment, can continuously control the flow of a hydraulic actuator, and is widely applied to the fields of ocean engineering, railway tunnels, aerospace, nuclear power and the like. From the valve port flow equation
Figure BDA0001922341100000011
It can be seen that the flow rate through the proportional flow valve is not only related to the valve port opening area a, but also affected by the change in the differential pressure Δ p across the valve port.
In order to eliminate the influence of load variation, as shown in fig. 1, a conventional flow valve is connected with a pressure compensation valve in series at the inlet or the outlet of a proportional throttle valve, so as to maintain the pressure difference Δ p between the two ends of the throttle valve constant and realize the proportional control of the through-flow. However, the flow control valve has poor controllability and slow dynamic response in a low working pressure range; meanwhile, due to the influences of the hydraulic force and the dynamic frequency response of the compensating valve core, the pressure difference delta p of the throttle valve is large in fluctuation, large flow deviation exists, load pressure step starting flow overshoot exists, and a steady-state load characteristic curve and a load step response characteristic curve are respectively shown in fig. 2 and fig. 3.
In order to improve the control accuracy and dynamic characteristics of a proportional flow valve, a two-way cartridge valve is used as a dynamic flow sensor to detect the flow of the valve, the flow passing through the sensor is converted into the displacement or differential pressure of a valve element of the two-way cartridge valve, and the displacement or differential pressure is used as a feedback signal to control the flow of the valve in a closed loop manner. However, the disadvantage of this valve is that the structure is complicated and it is not suitable for a large flow control valve.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the electric control compensation two-way proportional flow valve which is simple in structure, good in dynamic characteristic and large in regulation range, overcomes the defects of large flow overshoot of the traditional flow valve under load step and starting step, and realizes high-precision flow steady-state control.
In order to achieve the purpose, the invention adopts the following technical scheme: an electronic control compensation two-way proportional flow valve comprises a proportional pilot valve (1), a main valve (6) and an I displacement sensor (10); the proportional pilot valve comprises a pilot valve core (2), an I-th proportional electromagnet (3), a pilot valve spring (4), a pilot valve body (5) and a pilot valve oil inlet (A)2) And pilot valve oil outlet (B)2) (ii) a The main valve comprises a main valve core (7), a main valve sleeve (8), a main valve reset spring (9) and a main valve oil inlet (P)A) Main valve oil outlet (P)B) And a main valve control chamber (P)C) (ii) a The first displacement sensor is arranged on the main valve core and used for detecting the displacement of the main valve core; the hydraulic control system is characterized by further comprising an electronic pressure compensation valve (11) or an electro-hydraulic pressure compensation valve (12), wherein the specific type of the pressure compensation valve is determined by load pressure and flow;
the electronic pressure compensation valve is a pressure compensation valve controlled by a proportional electromagnet or a pressure compensation valve controlled by a linear motor or a rotating motor driving ballThe pressure compensating valve controlled by the screw rod comprises a displacement sensor (13), a second proportional electromagnet (14), a compensating valve body (15), a compensating valve core (16), a spring (17) and an oil inlet (A) when the electronic pressure compensating valve is controlled by the proportional electromagnet1) Oil outlet (B)1) I control chamber (P)F) And the second control chamber (P)E) (ii) a The compensating valve core is arranged in the compensating valve body, one end of the spring acts on the left end surface C of the compensating valve core, the other end acts on the compensating valve body and forms a first control cavity P with the compensating valve coreFThe second proportional electromagnet is connected with the compensating valve body, acts on the right end surface D of the compensating valve core, and forms a second control cavity P with the compensating valve core and the compensating valve bodyEThe displacement sensor and the second proportional electromagnet are integrally installed;
when the electronic pressure compensation valve is a pressure compensation valve controlled by a linear motor, the electronic pressure compensation valve comprises a displacement sensor, a compensation valve body, a compensation valve core, a spring, the linear motor (18) and an oil inlet (A)1) Oil outlet (B)1) I control chamber (P)F) And the second control chamber (P)E) (ii) a The compensating valve core is arranged in the compensating valve body, one end of the spring acts on the left end surface C of the compensating valve core, the other end acts on the compensating valve body and forms a first control cavity P with the compensating valve coreFThe linear motor is connected with the compensation valve body, arranged on the right end surface D of the compensation valve core and forms a II-th control cavity P together with the compensation valve body and the compensation valve coreE. Or
When the electronic pressure compensation valve is a pressure compensation valve controlled by a ball screw driven by a rotating motor, the electronic pressure compensation valve comprises a displacement sensor, a compensation valve body, a compensation valve core, a spring, a rotating motor (19), a ball screw (20), a connecting rod (21) and an oil inlet (A)1) Oil outlet (B)1) I control chamber (P)F) And the second control chamber (P)E) (ii) a The compensating valve core is arranged in the compensating valve body, one end of the spring acts on the left end surface C of the compensating valve core, the other end acts on the compensating valve body and forms a first control cavity P with the compensating valve coreFThe displacement sensor is arranged on the compensating valve core through the compensating valve body,directly detecting the position X and speed XV of the valve core, connecting the rotating motor with the compensating valve body, and forming a second control cavity P with the compensating valve body and the compensating valve coreEAn extension shaft of the rotating motor is connected with a screw rod of the ball screw, a nut of the ball screw is connected with the connecting rod, the rotating motor drives the ball screw to rotate, and the rotating motion of the motor is converted into linear motion through the ball screw, so that the connecting rod is driven to output different forces and displacements;
the electro-hydraulic pressure compensation valve comprises a displacement sensor, a compensation valve body, a compensation valve core, a spring, an oil inlet (A), an oil outlet (B) and a first control cavity (P)F) II control chamber (P)E) And III control chamber (P)G) (ii) a The compensating valve core is arranged in the compensating valve body, one end of the spring acts on the left end surface C of the compensating valve core, the other end acts on the compensating valve body and forms a first control cavity P with the compensating valve coreFThe displacement sensor is arranged on the compensating valve core through the compensating valve body to directly detect the position X and the speed XV of the valve core, and the other end of the compensating valve core forms a second control cavity P with the compensating valve body respectivelyEAnd III control chamber PG；
The connection mode of the electronic pressure compensation valve or the electro-hydraulic pressure compensation valve and the main valve is as follows:
oil outlet B of electronic pressure compensation valve or electro-hydraulic pressure compensation valve1With main valve oil inlet PAControl cavity P of electronic pressure compensation valve or electro-hydraulic pressure compensation valveFThrough, main valve oil outlet PBWith the second control chamber P of the electronic or electrohydraulic pressure compensating valveECommunicating;
when the electro-hydraulic pressure compensation valve is adopted, the proportional flow valve further comprises a pilot proportional pressure reducing valve (22), and an oil inlet A of the electro-hydraulic pressure compensation valve1The working oil port of the pilot proportional pressure reducing valve is communicated with a III control cavity P of the electro-hydraulic pressure compensation valveGAnd (4) communicating.
The electronic pressure compensation valve and the electro-hydraulic pressure compensation valve are one of a normally open type and a normally closed type.
The displacement sensor is integrated on the second proportional electromagnet, and detects the position X and the speed XV of the valve core by detecting the second proportional electromagnet, or is arranged on the compensating valve core to directly detect the position X and the speed XV of the valve core.
The second proportional electromagnet is one of a unidirectional proportional electromagnet and a bidirectional proportional electromagnet.
The rotating motor is one of a direct current motor, a synchronous motor and an asynchronous motor.
Compared with the prior art, the invention has the following beneficial effects:
the invention designs a novel element electronic pressure compensation valve and an electro-hydraulic pressure compensation valve, realizes real-time continuous regulation and control of the compensation differential pressure of the proportional flow valve, enlarges the flow regulation and control range of the proportional flow valve, changes the dynamic characteristic, and overcomes the problem of poor controllability of the traditional proportional flow valve in a low working pressure range.
The invention designs a novel element electronic pressure compensation valve and an electro-hydraulic pressure compensation valve, adopts the electronic control unit to control and detect the position of the compensation valve core, can realize the closed-loop control of the compensation valve core, further improves the flow control precision of the whole valve, enhances the load change resistance flow regulation rigidity of the flow valve, and has good steady-state load characteristic.
The invention adopts the novel element electronic pressure compensation valve and the electro-hydraulic pressure compensation valve, can realize the normal open or normal close control of the compensation valve, and solves the problems of response lag and load pressure step starting flow overshoot of the traditional flow valve adopting a decompression type compensation valve.
Drawings
FIG. 1 is a schematic diagram of a conventional proportional flow valve;
FIG. 2 is a steady state flow characteristic of a conventional proportional flow valve;
FIG. 3 is a load step characteristic of a conventional proportional flow valve;
FIG. 4 is a schematic structural component diagram of the electromagnetic proportional pilot valve of the present invention;
FIG. 5 is a schematic view of the main valve of the present invention;
FIG. 6 is a schematic diagram of a first construction of the electronic pressure compensating valve of the present invention;
FIG. 7 is a schematic diagram of a second construction of the electronic pressure compensating valve of the present invention;
FIG. 8 is a schematic diagram of a third construction of the electronic pressure compensating valve of the present invention;
FIG. 9 is a schematic diagram of the electro-hydraulic pressure compensating valve of the present invention;
fig. 10 is a schematic structural view of a proportional governor valve using an electronic pressure compensating valve according to embodiment 1 of the present invention;
fig. 11 is a schematic structural view of a proportional speed control valve using an electro-hydraulic pressure compensating valve according to embodiment 2 of the present invention.
In the figure: 1-proportional pilot valve, 2-pilot valve core, 3-proportion I electromagnet, 4-pilot valve spring, 5-pilot valve body, 6-main valve, 7-main valve core, 8-main valve sleeve, 9-main valve return spring, 10-displacement sensor I, 11-electronic pressure compensation valve, 12-electro-hydraulic pressure compensation valve, 13-displacement sensor II, 14-proportion II electromagnet, 15-compensation valve body, 16-compensation valve core, 17-spring, 18-linear motor, 19-rotary motor, 20-ball screw, 21-connecting rod and 22-pilot proportional pressure reducing valve.
Detailed Description
The principle and structure of an electrically-controlled compensated two-way proportional flow valve according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Example 1
An electronic control compensation two-way proportional flow valve comprises a proportional pilot valve 1, a main valve 6 and an I displacement sensor 10;
as shown in fig. 4, the proportional pilot valve includes a pilot valve core 2, an i-th proportional electromagnet 3, a pilot valve spring 4, a pilot valve body 5, and a pilot valve oil inlet a2And pilot valve oil outlet B2；
As shown in FIG. 5, the main valve includes a main valve core 7, a main valve sleeve 8, a main valve return spring 9, a main valve oil inlet PAMain valve oil outlet PBAnd a main valve control chamber PC(ii) a A first displacement sensor 10 is arranged on the main valve element 7 and is used for detecting the displacement of the main valve element 7; it is characterized by also comprising an electronic pressure compensation valve 11;
the electronic pressure compensation valve 11 is a pressure compensation valve controlled by a proportional electromagnet 14 or a pressure compensation valve controlled by a linear motor 18 or a pressure compensation valve controlled by a ball screw 20 driven by a rotating motor 19.
As shown in fig. 6, when the electronic pressure compensating valve 11 is a pressure compensating valve controlled by the proportional electromagnet 14, it includes a displacement sensor 13, a second proportional electromagnet 14, a compensating valve body 15, a compensating valve core 16, a spring 17, and an oil inlet a1Oil outlet B1I control chamber PFAnd the second control chamber PE(ii) a The compensation valve core 16 is arranged in the compensation valve body 15, one end of the spring 17 acts on the left end surface C of the compensation valve core 16, the other end acts on the compensation valve body 15 and forms an I-th control cavity P with the compensation valve core 16FThe second proportional electromagnet 14 is connected with the compensation valve body 15, acts on the right end surface D of the compensation valve core 16, and forms a second control cavity P with the compensation valve core 16 and the compensation valve body 15EThe displacement sensor 13 and the second proportional electromagnet 14 are integrally installed;
as shown in fig. 7, when the electronic pressure compensating valve 11 is a pressure compensating valve controlled by a linear motor 18, it includes a displacement sensor 13, a compensating valve body 15, a compensating valve core 16, a spring 17, a linear motor 18, and an oil inlet a1Oil outlet B1I control chamber PFAnd the second control chamber PE(ii) a The compensation valve core 16 is arranged in the compensation valve body 15, one end of the spring 17 acts on the left end surface C of the compensation valve core 16, the other end acts on the compensation valve body 15 and forms an I-th control cavity P with the compensation valve core 16FThe displacement sensor 13 is arranged on the compensating valve core 16 through the compensating valve body 15 to directly detect the position X and the speed XV of the valve core, the linear motor 18 is connected with the compensating valve body 15 and arranged on the right end surface D of the compensating valve core 16, and forms a second control cavity P with the compensating valve body 15 and the compensating valve core 16E. Or
As shown in fig. 8, when the electronic pressure compensating valve 11 is a pressure compensating valve controlled by a rotating motor 19 driving a ball screw 20, it includes a displacement sensor 13, a compensating valve body 15, a compensating valve core 16, a spring 17, the rotating motor 19, the ball screw 20, a connecting rod 21, and an oil inlet a1Oil outlet B1I control chamberPFAnd the second control chamber PE(ii) a The compensation valve core 16 is arranged in the compensation valve body 15, one end of the spring 17 acts on the left end surface C of the compensation valve core 16, the other end acts on the compensation valve body 15 and forms an I-th control cavity P with the compensation valve core 16FThe displacement sensor 13 is arranged on the compensating valve core 16 through the compensating valve body 15 and directly detects the position X and the speed XV of the valve core, and the rotating motor 19 is connected with the compensating valve body 15 and forms a second control cavity P with the compensating valve body 15 and the compensating valve core 16EAn extending shaft of the rotating motor 19 is connected with a screw rod of the ball screw 20, a nut of the ball screw 20 is connected with the connecting rod 21, the rotating motor 19 drives the ball screw 20 to rotate, and the rotating motion of the motor is converted into linear motion through the ball screw 20, so that the connecting rod 21 is driven to output different forces and displacements;
as shown in fig. 10, the connection between the electronic pressure compensation valve 11 and the main valve 6 is as follows:
oil outlet B of electronic pressure compensation valve 111With main valve oil inlet PAThe first control chamber P of the electronic pressure compensating valve 11FThrough, main valve 6 oil outlet PBWith the second control chamber P of the electronic pressure compensating valve 11ECommunicating;
the electronic pressure compensating valve 11 is one of a normally open type and a normally closed type.
The displacement sensor 13 is integrated on the second proportional electromagnet 14, and detects the position X and the speed XV of the spool by detecting the second proportional electromagnet 14, or is installed on the compensation spool 16 to directly detect the position X and the speed XV of the spool.
The second proportional electromagnet 14 is one of a unidirectional proportional electromagnet and a bidirectional proportional electromagnet.
The rotating electric machine 19 is one of a direct current motor, a synchronous motor and an asynchronous motor.
Example 2
The second embodiment of the electric control compensation two-way proportional flow valve is the same as the first embodiment in structural composition and connection relationship, and is different from the first embodiment in that the electro-hydraulic pressure compensation valve 12 is adopted.
Electro-hydraulic pressure compensation, as shown in FIG. 9The valve 12 comprises a displacement sensor 13, a compensation valve body 15, a compensation valve core 16, a spring 17, an oil inlet A, an oil outlet B and a control cavity I PFII control chamber PEAnd III control chamber PG(ii) a The compensation valve core 16 is arranged in the compensation valve body 15, one end of the spring 17 acts on the left end surface C of the compensation valve core 16, the other end acts on the compensation valve body 15 and forms an I-th control cavity P with the compensation valve core 16FThe displacement sensor 13 is arranged on the compensating valve core 16 through the compensating valve body 15, directly detects the position X and the speed XV of the valve core 16, and the other end of the compensating valve core 16 forms a second control cavity P with the compensating valve body 15 respectivelyEAnd III control chamber PG。
As shown in FIG. 11, when the electro-hydraulic pressure compensation valve 12 is used, the proportional flow valve further comprises a pilot proportional pressure reducing valve 22, and an oil inlet A of the electro-hydraulic pressure compensation valve 121Is communicated with an oil inlet of the pilot proportional reducing valve 22, an oil outlet of the pilot proportional reducing valve 22 is communicated with an oil tank, a working oil port of the pilot proportional reducing valve 22 is communicated with a III control cavity P of the electro-hydraulic pressure compensation valve 12GAnd (4) communicating.

Claims (5)

1.一种电控补偿二通比例流量阀，包括比例先导阀（1）、主阀（6）和第Ⅰ位移传感器（10）；比例先导阀包括有先导阀芯（2）、第Ⅰ比例电磁铁（3）、先导阀弹簧（4）、先导阀体（5）、先导阀进油口（A2）和先导阀出油口（B2）；主阀包括有主阀芯（7）、主阀套（8）、主阀复位弹簧（9）、主阀进油口（PA）、主阀出油口（PB）和主阀控制腔（PC）；第Ⅰ位移传感器安装在主阀芯上，检测主阀芯位移；其特征在于，还包括电子压力补偿阀（11）或电液压力补偿阀（12），具体包括哪种压力补偿阀由负载压力和流量决定；1. An electronically controlled compensation two-way proportional flow valve, comprising a proportional pilot valve (1), a main valve (6) and a first displacement sensor (10); the proportional pilot valve includes a pilot spool (2), a first proportional Solenoid (3), pilot valve spring (4), pilot valve body (5), pilot valve oil inlet (A 2 ) and pilot valve oil outlet (B 2 ); the main valve includes a main spool (7) , the main valve sleeve (8), the main valve return spring (9), the main valve oil inlet (P A ), the main valve oil outlet (P B ) and the main valve control chamber (P C ); the first displacement sensor is installed On the main spool, the displacement of the main spool is detected; it is characterized in that it also includes an electronic pressure compensation valve (11) or an electro-hydraulic pressure compensation valve (12), which type of pressure compensation valve is specifically determined by the load pressure and flow rate; 所述电子压力补偿阀是比例电磁铁控制的压力补偿阀或直线电机控制的压力补偿阀或旋转电机驱动滚珠丝杠控制的压力补偿阀，电子压力补偿阀是比例电磁铁控制的压力补偿阀时包含有位移传感器（13）、第Ⅱ比例电磁铁（14）、补偿阀体（15）、补偿阀芯（16）、弹簧（17）、进油口（A1）、出油口（B1）、第Ⅰ控制腔（PF）和第Ⅱ控制腔（PE）；补偿阀芯布置在补偿阀体之中，弹簧一端作用在补偿阀芯左端面（C）上，另一端作用在补偿阀体上、并与补偿阀芯形成第Ⅰ控制腔（PF），第Ⅱ比例电磁铁与补偿阀体连接、作用在补偿阀芯右端面（D）上，并与补偿阀芯、补偿阀体形成第Ⅱ控制腔（PE），位移传感器与比例电磁铁集成安装；The electronic pressure compensation valve is a pressure compensation valve controlled by a proportional solenoid or a pressure compensation valve controlled by a linear motor or a pressure compensation valve controlled by a ball screw driven by a rotary motor. When the electronic pressure compensation valve is a pressure compensation valve controlled by a proportional solenoid Including displacement sensor (13), Ⅱ proportional electromagnet (14), compensation valve body (15), compensation spool (16), spring (17), oil inlet (A 1 ), oil outlet (B 1 ), the first control chamber (P F ) and the second control chamber ( PE ); the compensation spool is arranged in the compensation valve body, one end of the spring acts on the left end face (C) of the compensation spool, and the other end acts on the compensation spool The first control chamber (P F ) is formed on the valve body and with the compensation spool. The second proportional electromagnet is connected with the compensation valve body, acts on the right end face (D) of the compensation spool, and is connected with the compensation spool and the compensation valve. The body forms the second control chamber ( PE ), and the displacement sensor and the proportional electromagnet are integrated; 电子压力补偿阀是直线电机控制的压力补偿阀时，包括位移传感器、补偿阀体、补偿阀芯、弹簧、直线电机（18）、进油口（A1）、出油口（B1）、第Ⅰ控制腔（PF）和第Ⅱ控制腔（PE）；补偿阀芯布置在补偿阀体之中，弹簧一端作用在补偿阀芯左端面（C）上，另一端作用在补偿阀体上、并与补偿阀芯形成第Ⅰ控制腔（PF），位移传感器通过补偿阀体安设在补偿阀芯上，直接检测阀芯的位置X和速度XV，直线电机与补偿阀体连接、安设在补偿阀芯右端面（D）上，并与补偿阀体、补偿阀芯形成第Ⅱ控制腔（PE）；When the electronic pressure compensation valve is a pressure compensation valve controlled by a linear motor, it includes a displacement sensor, a compensation valve body, a compensation valve core, a spring, a linear motor (18), an oil inlet (A 1 ), an oil outlet (B 1 ), The first control chamber (P F ) and the second control chamber ( PE ); the compensation valve core is arranged in the compensation valve body, one end of the spring acts on the left end face (C) of the compensation valve core, and the other end acts on the compensation valve body The displacement sensor is installed on the compensation valve core through the compensation valve body to directly detect the position X and speed XV of the valve core, and the linear motor is connected to the compensation valve body. It is installed on the right end face ( D ) of the compensation valve core, and forms the second control chamber (PE ) with the compensation valve body and the compensation valve core; 电子压力补偿阀是旋转电机驱动滚珠丝杠控制的压力补偿阀时，包括位移传感器、补偿阀体、补偿阀芯、弹簧、旋转电机（19）、滚珠丝杠（20）、连杆（21）、进油口（A1）、出油口（B1）、第Ⅰ控制腔（PF）和第Ⅱ控制腔（PE）；补偿阀芯布置在补偿阀体之中，弹簧一端作用在补偿阀芯左端面（C）上，另一端作用在补偿阀体上、并与补偿阀芯形成第Ⅰ控制腔（PF），位移传感器通过补偿阀体安设在补偿阀芯上，直接检测阀芯的位置X和速度XV，旋转电机与补偿阀体连接、并与补偿阀体、补偿阀芯形成第Ⅱ控制腔（PE），旋转电机伸出轴与滚珠丝杠的螺杆连接，滚珠丝杠的螺母与连杆连接，旋转电机带动滚珠丝杠旋转，通过滚珠丝杠将电机的旋转运动转换为直线运动，从而驱动连杆输出不同的力和位移；When the electronic pressure compensation valve is a pressure compensation valve controlled by a ball screw driven by a rotary motor, it includes a displacement sensor, a compensation valve body, a compensation valve core, a spring, a rotary motor (19), a ball screw (20), and a connecting rod (21) , oil inlet ( A 1 ), oil outlet (B 1 ), the first control chamber (P F ) and the second control chamber (PE ); the compensation spool is arranged in the compensation valve body, and one end of the spring acts on the On the left end face (C) of the compensation valve core, the other end acts on the compensation valve body, and forms the first control chamber (P F ) with the compensation valve core. The displacement sensor is installed on the compensation valve core through the compensation valve body and directly detects The position X and speed XV of the valve core, the rotary motor is connected with the compensation valve body, and forms the second control chamber ( PE ) with the compensation valve body and the compensation valve core, and the extension shaft of the rotary motor is connected with the screw of the ball screw, and the ball The nut of the lead screw is connected with the connecting rod, the rotating motor drives the ball screw to rotate, and the rotating motion of the motor is converted into linear motion through the ball screw, thereby driving the connecting rod to output different forces and displacements; 所述的电液压力补偿阀包括位移传感器、补偿阀体、补偿阀芯、弹簧、进油口（A）、出油口（B）、第Ⅰ控制腔（PF）、第Ⅱ控制腔（PE）和第Ⅲ控制腔（PG）；补偿阀芯布置在补偿阀体之中，弹簧一端作用在补偿阀芯左端面（C）上，另一端作用在补偿阀体上、并与补偿阀芯形成第Ⅰ控制腔（PF），位移传感器通过补偿阀体安设在补偿阀芯上，直接检测阀芯的位置X和速度XV，补偿阀芯另一端分别与补偿阀体形成第Ⅱ控制腔（PE）和第Ⅲ控制腔（PG）；The electro-hydraulic pressure compensation valve includes a displacement sensor, a compensation valve body, a compensation valve core, a spring, an oil inlet (A), an oil outlet (B), the first control chamber (P F ), the second control chamber ( P E ) and the third control chamber (P G ); the compensation valve core is arranged in the compensation valve body, one end of the spring acts on the left end face (C) of the compensation valve core, and the other end acts on the compensation valve body, and is connected with the compensation valve body. The valve core forms the first control chamber (P F ), and the displacement sensor is installed on the compensation valve core through the compensation valve body to directly detect the position X and speed XV of the valve core, and the other end of the compensation valve core and the compensation valve body form the second Control cavity ( PE ) and the third control cavity ( PG ); 电子压力补偿阀或电液压力补偿阀与主阀的连接方式为：The connection between the electronic pressure compensation valve or the electro-hydraulic pressure compensation valve and the main valve is as follows: 电子压力补偿阀或电液压力补偿阀出油口（B1）与主阀进油口（PA）、电子压力补偿阀或电液压力补偿阀第Ⅰ控制腔（PF）连通，主阀出油口（PB）与电子压力补偿阀或电液压力补偿阀第Ⅱ控制腔（PE）连通；The oil outlet (B 1 ) of the electronic pressure compensation valve or electro-hydraulic pressure compensation valve is connected with the main valve oil inlet (P A ), the first control chamber (P F ) of the electronic pressure compensation valve or electro-hydraulic pressure compensation valve, and the main valve The oil outlet (P B ) is communicated with the electronic pressure compensation valve or the second control chamber ( PE ) of the electro-hydraulic pressure compensation valve; 当采用电液压力补偿阀时，比例流量阀进一步还包含有先导比例减压阀（22），电液压力补偿阀的进油口（A1）与先导比例减压阀的进油口连通，先导比例减压阀的出油口与油箱连通，先导比例减压阀的工作油口与电液压力补偿阀的第Ⅲ控制腔（PG）连通。When the electro-hydraulic pressure compensation valve is used, the proportional flow valve further includes a pilot proportional pressure reducing valve (22), and the oil inlet (A 1 ) of the electro-hydraulic pressure compensation valve is communicated with the oil inlet of the pilot proportional pressure reducing valve, The oil outlet of the pilot proportional pressure reducing valve is communicated with the oil tank, and the working oil port of the pilot proportional pressure reducing valve is communicated with the third control chamber (P G ) of the electro-hydraulic pressure compensation valve. 2.根据权利要求1所述的一种电控补偿二通比例流量阀，其特征在于：所述的电子压力补偿阀和电液压力补偿阀是常开式和常闭式中的一种。2 . The electronically controlled compensation two-way proportional flow valve according to claim 1 , wherein the electronic pressure compensation valve and the electro-hydraulic pressure compensation valve are one of a normally open type and a normally closed type. 3 . 3.根据权利要求1所述的一种电控补偿二通比例流量阀，其特征在于：所述的位移传感器是集成在第Ⅱ比例电磁铁上，通过检测第Ⅱ比例电磁铁来检测阀芯位置X和速度XV，或是安设在补偿阀芯上，直接检测阀芯的位置X和速度XV。3. An electronically controlled compensation two-way proportional flow valve according to claim 1, characterized in that: the displacement sensor is integrated on the second proportional electromagnet, and the valve core is detected by detecting the second proportional electromagnet Position X and speed XV, or installed on the compensation spool, directly detect the position X and speed XV of the spool. 4.根据权利要求1所述的一种电控补偿二通比例流量阀，其特征在于：所述的第Ⅱ比例电磁铁是单向比例电磁铁和双向比例电磁铁中的一种。4 . The electronically controlled compensation two-way proportional flow valve according to claim 1 , wherein the second proportional electromagnet is one of a one-way proportional electromagnet and a two-way proportional electromagnet. 5 . 5.根据权利要求1所述的一种电控补偿二通比例流量阀，其特征在于：所述的旋转电机是直流电机、同步电机和异步电机中的一种。5 . The electronically controlled compensation two-way proportional flow valve according to claim 1 , wherein the rotating electrical machine is one of a DC motor, a synchronous motor and an asynchronous motor. 6 .
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