WO2021184848A1 - 一种液压操动机构及其控制阀 - Google Patents

一种液压操动机构及其控制阀 Download PDF

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Publication number
WO2021184848A1
WO2021184848A1 PCT/CN2020/135965 CN2020135965W WO2021184848A1 WO 2021184848 A1 WO2021184848 A1 WO 2021184848A1 CN 2020135965 W CN2020135965 W CN 2020135965W WO 2021184848 A1 WO2021184848 A1 WO 2021184848A1
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WIPO (PCT)
Prior art keywords
valve
oil
port
control valve
opening
Prior art date
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PCT/CN2020/135965
Other languages
English (en)
French (fr)
Inventor
钟建英
雷琴
刘煜
刘宇
李海文
韩国辉
谭盛武
江经华
段晓辉
孙英杰
何保营
Original Assignee
平高集团有限公司
国家电网有限公司
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Application filed by 平高集团有限公司, 国家电网有限公司 filed Critical 平高集团有限公司
Publication of WO2021184848A1 publication Critical patent/WO2021184848A1/zh

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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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices

Definitions

  • the fast switch is the key equipment for power transmission, and the operating mechanism is the key component of the fast switch.
  • the operating mechanism of quick switch is mainly divided into hydraulic operating mechanism, spring operating mechanism and pneumatic operating mechanism. Among them, hydraulic operating mechanism is widely used because of its high output power and high reliability.
  • a hydraulic operating mechanism in the prior art is shown in Fig. 1 and includes a working cylinder 101.
  • the working cylinder 101 has a piston cavity 102.
  • the piston cavity 102 is sealed and slidingly fitted with a piston 107, and a piston rod 103 is fixed on the piston 107.
  • the piston rod 103 passes through the working cylinder 101, and the protruding end of the piston rod 103 is connected to the moving end part of the main fracture through a transmission mechanism.
  • the piston 107 and the piston rod 103 constitute a piston assembly, and the piston assembly connects the piston chamber 102 It is divided into a rod cavity and a rodless cavity; it also includes an accumulator 106, which is connected to the rod cavity through a high-pressure oil passage.
  • the two-position three-way valve 104 is connected to the rodless cavity.
  • the two-position three-way valve 104 is an electromagnetic control valve.
  • the two-position three-way valve 104 has a port Z, a port P, and a port T.
  • the port Z is connected to the rodless cavity.
  • the port is connected with the accumulator 106, and the T port is connected with the oil tank 105.
  • the spool of the two-position three-way valve 104 has two positions.
  • the electromagnetic control valve of the hydraulic operating mechanism in the prior art has a long inherent response time, and in order to ensure that the electromagnet of the electromagnetic control valve has sufficient output force, its structure generally adopts a multi-stage amplification method, from the electrification of the electromagnet coil to the Moving iron core action, primary valve action, secondary valve action, main valve action, and finally hydraulic operating mechanism action, the inherent action time is longer. At this time, the conventional hydraulic operating mechanism can no longer meet the requirements of the action time of the fast switch.
  • Hydraulic operating mechanism including:
  • the working cylinder includes a rod cavity and a rodless cavity, and the rod cavity is connected with a high-pressure oil source;
  • Control valve including high-pressure oil port, working oil port and low-pressure oil port;
  • the high-pressure oil port is in communication with a high-pressure oil source, the working oil port is in communication with the rodless cavity, and the low-pressure oil port is in communication with an oil tank;
  • the control valve also includes a closing control valve unit, an opening control valve unit, and a driving part;
  • Both the closing control valve unit and the opening control valve unit include a valve body, a spool and a driving part;
  • the valve body is provided with an oil inlet and an oil outlet, as well as an oil inlet and an oil outlet.
  • the oil inlet and the oil outlet are respectively connected with the oil inlet and the oil outlet, and the oil inlet and the oil outlet There are valve ports between the channels;
  • the valve core is movably arranged in the valve body and used to block and open the valve port;
  • a spool spring is provided in the valve body, and the spool spring is used to apply force to the spool to block the valve port;
  • the oil inlet of the closing control valve unit forms the high-pressure oil port
  • the oil outlet of the opening control valve unit forms the low-pressure oil port
  • the oil outlet of the closing control valve unit and the oil inlet of the opening control valve unit ⁇ forms the working oil port
  • the driver corresponding to the valve core, is used to drive the valve core to open the valve port;
  • the driving member is connected with a repulsive force mechanism, and the repulsive force mechanism is used to drive the driving member to move.
  • the beneficial effect is that the opening and closing of the corresponding control valve unit is directly controlled by the repulsion mechanism to realize the on and off of the oil passage of the hydraulic operating mechanism, thereby driving the working cylinder to perform opening or closing operations, reducing the action of the intermediate multi-stage valve Link, shorten the response time of the components, can meet the requirements of the opening and closing action time of the fast switch of the power grid system, reduce the short-circuit current of the circuit breaker opening, and improve the safety of the power grid system.
  • valve port is formed by an opening at one end of the oil inlet passage away from the high-pressure oil port;
  • the valve body is provided with a valve cavity, and the valve core is slidingly sealed and arranged in the valve cavity;
  • the side of the spool facing away from the valve port is provided with a movable chamber, which is used to provide a movable space for the spool, and a bypass oil passage is provided between the movable chamber and the oil inlet.
  • the beneficial effect is that the movable chamber on the side of the valve core facing away from the valve port will not become a dead space, thereby ensuring the flexibility of the valve core movement.
  • the driving member is slidably sealed and assembled on the valve body and penetrates into the oil inlet passage.
  • the beneficial effect is that the drive member penetrates into the oil passage to drive the valve core to move, which reduces the opening on the valve body, not only reduces the processing procedures, but also better guarantees the sealing performance of the valve body.
  • the driving part and the valve core are separated from each other;
  • the repulsion mechanism includes a repulsion disc and a repulsion disc return spring. After the repulsion disc drives the driving element to push the valve core to open, the repulsion disc return spring is used to drive the repulsion disc to reset, so that the driving element releases the push of the valve core.
  • the beneficial effect is that the driving part and the valve core are separated from each other, so that the repulsive force mechanism can drive the driving part to release the pushing of the valve core.
  • a sealing spherical surface is provided on the valve core, and the sealing spherical surface is used for sealingly matching with the valve port.
  • the high-pressure oil port is used to communicate with the high-pressure oil source, the working oil port is used to communicate with the rodless cavity, and the low-pressure oil port is used to communicate with the oil tank;
  • Both the closing control valve unit and the opening control valve unit include a valve body, a spool and a driving part;
  • the valve core is movably arranged in the valve body and used to block and open the valve port;
  • a spool spring is provided in the valve body, and the spool spring is used to apply force to the spool to block the valve port;
  • the driving member is connected with a repulsive force mechanism, and the repulsive force mechanism is used to drive the driving member to move.
  • the beneficial effect is that the opening and closing of the corresponding control valve unit is directly controlled by the repulsion mechanism to realize the on and off of the oil passage of the hydraulic operating mechanism, thereby driving the working cylinder to perform opening or closing operations, reducing the action of the intermediate multi-stage valve Link, shorten the response time of the components, can meet the requirements of the opening and closing action time of the fast switch of the power grid system, reduce the short-circuit current of the circuit breaker opening, and improve the safety of the power grid system.
  • valve port is formed by an opening at one end of the oil inlet passage away from the high-pressure oil port;
  • the valve body is provided with a valve cavity, and the valve core is slidingly sealed and arranged in the valve cavity;
  • the side of the spool facing away from the valve port is provided with a movable chamber, which is used to provide a movable space for the spool, and a bypass oil passage is provided between the movable chamber and the oil inlet.
  • the beneficial effect is that the movable chamber on the side of the valve core facing away from the valve port will not become a dead space, thereby ensuring the flexibility of the valve core movement.
  • the driving member is slidably sealed and assembled on the valve body and penetrates into the oil inlet passage.
  • the beneficial effect is that the drive member penetrates into the oil passage to drive the valve core to move, which reduces the opening on the valve body, not only reduces the processing procedures, but also better guarantees the sealing performance of the valve body.
  • the driving part and the valve core are separated from each other;
  • the repulsion mechanism includes a repulsion disc and a repulsion disc return spring. After the repulsion disc drives the driving element to push the valve core to open, the repulsion disc return spring is used to drive the repulsion disc to reset, so that the driving element releases the push of the valve core.
  • the beneficial effect is that the driving part and the valve core are separated from each other, so that the repulsive force mechanism can drive the driving part to release the pushing of the valve core.
  • a sealing spherical surface is provided on the valve core, and the sealing spherical surface is used for sealingly matching with the valve port.
  • Figure 1 is a schematic structural diagram of a hydraulic operating mechanism in the prior art
  • Fig. 3 is a schematic diagram of the structure of the closing control valve unit in Fig. 2;
  • Fig. 4 is a schematic diagram of the structure of the opening control valve unit in Fig. 2.
  • Figure 1 101-working cylinder; 102-piston chamber; 103-piston rod; 104-two-position three-way valve; 105-fuel tank; 106-accumulator; 107-piston;
  • first and “second” and other relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between.
  • the terms “include”, “include” or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence “including a" does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.
  • the hydraulic operating mechanism includes a working cylinder 1.
  • the working cylinder 1 has a piston cavity.
  • the piston 3 is sealed and slidingly fitted in the piston cavity.
  • a piston rod 2 is fixed on the piston 3.
  • the piston rod 2 is penetrated by the working cylinder 1.
  • the end of the piston rod 2 extending out of the working cylinder 1 is drivingly connected to the moving end portion 20 of the main fracture through a transmission mechanism; it also includes a control valve, which includes a closing control valve unit and an opening control valve unit.
  • the piston 3 and the piston rod 2 constitute a piston assembly, and the piston assembly divides the piston cavity into a rod cavity and a rodless cavity.
  • an accumulator 4 is connected to the rod cavity through an oil passage, and the accumulator 4 is connected to a closing control valve unit through the oil passage.
  • the closing control valve unit includes a closing valve body 11, which has a closing valve cavity.
  • the closing valve body 11 is provided with a closing oil inlet 22 and a closing oil outlet 21.
  • the closing oil passage 22 communicates with the closing valve cavity and the accumulator 4;
  • the closing oil passage 21 communicates with the closing valve cavity and the rodless cavity, and the oil outlet communicating with the closing oil passage 21 and the rodless cavity constitutes a working oil port.
  • the closing oil inlet passage 22 and the closing oil outlet passage 21 are communicated through the closing valve cavity.
  • the accumulator 4 constitutes a high-pressure oil source.
  • a closing valve core 24 and a third return spring 23 are arranged in the closing valve cavity, and the third return spring 23 constitutes a valve core spring.
  • the closing valve core 24 includes a closing valve ball 25.
  • the closing valve ball 25 is arranged on the side of the closing valve core 24 away from the third return spring 23.
  • the closing valve ball 25 has a sealing spherical surface.
  • the third return spring 23 is pressed against the closing valve core 24. , So that the closing valve ball 25 and the closing valve port 33 are sealed and matched, and the closing oil inlet 22 and the closing oil outlet 21 are cut off.
  • a closing baffle 10 is provided under the closing valve cavity, and the closing baffle 10 is used to block the closing valve cavity.
  • a closing movable chamber 31 is provided under the closing valve core 24, and a closing bypass oil passage 9 is also provided in the closing valve body 11.
  • the closing bypass oil passage 9 communicates with the closing oil inlet 22 and the closing valve.
  • the gate movable chamber 31 prevents the closing movable chamber 31 below the closing valve core 24 from becoming a dead space, thereby ensuring that the closing valve core 24 operates flexibly.
  • the closing oil inlet 22 has a closing valve port 33 and a closing oil inlet.
  • the closing oil inlet forms a high pressure oil port, and the closing oil inlet communicates with the accumulator.
  • the closing valve port 33 communicates with the closing valve cavity.
  • the center line of the closing valve port 33 coincides with the center line of the closing valve cavity.
  • the closing valve body is sealed and slidingly fitted with a closing drive rod 8, and the lower end of the closing drive rod 8 passes through Closing valve port 33.
  • the closing drive rod 8 drives the closing valve ball 25 to move downward, so as to realize the communication between the closing oil inlet 22 and the closing oil outlet 21.
  • the closing driving rod 8 constitutes a closing driving member.
  • the closing drive rod 8 and the closing repulsive force mechanism 5 are both provided with connecting flanges, the closing repulsive force mechanism 5 is fixedly connected to the closing drive rod 8 through the closing flange structure 7, and the closing repulsive force mechanism 5 It includes the repulsion plate and the first return spring 6.
  • the first return spring 6 can ensure that the repulsion plate returns to its original position after action, and the initial position of each action is consistent, which is beneficial to ensure the stability of the product action parameters.
  • the first return spring 6 constitutes a repulsive disc return spring.
  • the gate opening control valve unit includes a gate valve body 15, which has a gate valve cavity.
  • the gate valve body 15 is provided with an opening oil inlet 27 and an opening oil outlet 26.
  • the opening oil inlet passage 27 communicates with the opening valve cavity and the rodless cavity;
  • the opening oil passage 26 communicates with the closing valve cavity and the oil tank 14, and the oil outlet communicating with the opening oil passage and the oil tank constitutes a low pressure oil port.
  • the opening oil inlet passage 27 and the opening oil outlet passage 26 are communicated through the opening valve cavity.
  • An opening valve core 29 and a fourth return spring 28 are arranged in the opening valve cavity, and the fourth return spring 28 constitutes a valve core spring.
  • the gate valve core 29 includes a gate valve ball 30.
  • the gate valve ball 30 is arranged on the side of the gate valve core 29 away from the fourth return spring 28.
  • the gate valve ball 30 has a sealing spherical surface.
  • the fourth return spring 28 is pressed against the gate valve core 29. , So that the opening valve ball 30 and the opening valve port 34 are sealed and matched, and then the opening oil inlet 27 and the opening oil outlet 26 are cut off.
  • an opening baffle 13 is provided under the opening valve cavity, and the opening baffle 13 is used to block the opening valve cavity.
  • the opening driving rod 16 and the opening repulsive force mechanism 19 are both provided with connecting flanges.
  • the opening repulsive force mechanism 19 is fixedly connected to the opening driving rod 16 through the opening flange structure 17.
  • the opening repulsive force mechanism 19 includes the repulsion plate and the second return spring 18.
  • the second return spring 18 can ensure that the repulsion plate returns to its original position after action, and the initial position is consistent every time it is actuated, which is beneficial to ensure the stability of the product action parameters.
  • the second return spring 18 constitutes a repulsive disc return spring.
  • both the closing repulsive force mechanism and the opening repulsive force mechanism constitute a driving device.
  • the repulsive force mechanism is an existing mature product. It stops by itself.
  • the response time of the repulsive force mechanism to drive the working cylinder is about 1/5 to 1/4 of the response time of the traditional solenoid control valve, and the output force is large, which can completely overcome the hydraulic resistance. Directly control the on and off of the oil passage of the hydraulic operating mechanism.
  • the P cavity is connected to the accumulator 4, and high pressure oil is always in it.
  • the Z cavity is connected to the rodless cavity, and it is connected to the P cavity in the closing position, which is high pressure oil; when it is in the opening position, it is connected to the T cavity and is low pressure oil.
  • the T cavity is connected to the oil tank, which is always low pressure oil.
  • the closing repulsive force mechanism 5 acts to drive the closing driving rod 8 to open the closing valve ball 25, the closing oil inlet 22 and the closing oil outlet 21 are connected, and the valve in the P cavity The hydraulic oil enters the Z cavity. At this time, both the P cavity and the Z cavity are high pressure oil. Since the piston area of the rodless cavity is larger than the piston area of the rod cavity, the piston rod 2 moves to the rod cavity under the action of the pressure difference, thereby driving The moving end part 20 of the main fracture completes the closing operation, and then the closing repulsive force mechanism 5 returns to the original position under the action of the first return spring 6.
  • the opening repulsive force mechanism 19 acts to drive the opening drive rod 16 to open the opening valve ball 30, the opening inlet oil passage 27 and the opening outlet oil passage 26 are connected, and the hydraulic oil in the Z cavity enters T At this time, the P cavity is high pressure oil, and the Z cavity is low pressure oil. Therefore, the piston rod 2 moves to the rodless cavity under the action of the pressure difference of the piston rod 2, thereby driving the moving end part 20 of the main fracture to complete the opening operation, and then the opening repulsion mechanism 19 returns to its original position under the action of the second return spring 18, completing the opening and closing operation.
  • the closing drive rod 8 drives the closing spool 24 from above the closing spool 24, and the opening drive rod 16 drives the opening spool 29 from above the opening spool 29.
  • the closing driving rod is sealed and slidingly assembled on the closing valve body at the lower part of the closing spool, and the closing driving rod passes through the third return spring and is fixedly connected to the closing spool; at the same time, the opening driving rod is sealed and sliding It is assembled on the opening valve body at the lower part of the opening valve core, and the opening driving rod passes through the fourth return spring and is fixedly connected with the opening valve core.
  • the closing valve core 24 includes a closing valve ball 25, and the closing valve core 24 cuts off the closing oil inlet 22 and closing oil outlet 21 through the closing valve ball 25; the opening valve core 29 includes the opening valve ball 30.
  • the opening valve core 29 cuts off the opening inlet oil passage 27 and the opening outlet oil passage 26 through the opening valve ball 30.
  • the closing valve core is provided on the side facing away from the third return spring. Closing cone structure, the closing valve core is sealed and matched with the closing valve opening through the opening cone structure; at the same time, the side of the opening spool facing away from the fourth return spring is provided with an opening cone structure, and the opening spool passes through the opening cone. The structure is matched with the opening of the gate valve.
  • the opening driving rod 16 and the closing driving rod 8 are both provided with connecting flanges, and the two driving rods are respectively fixedly connected with the corresponding repulsive force mechanism through the connecting flange.
  • the end of the opening driving rod and the closing driving rod away from the corresponding valve body is provided with a threaded hole along its radial direction.
  • the bolt passes through the through hole and is screwed on the threaded hole to realize the fixed connection between the opening driving rod and the closing driving rod and the corresponding repulsive force mechanism.
  • the opening driving rod and the closing driving rod and the corresponding repulsive force mechanism may also be connected by threads.
  • the closing bypass oil passage 9 is provided in the closing valve body 11, so that the closing valve cavity under the closing valve core 24 will not become a dead space, and the opening valve body 15
  • the opening bypass oil passage 12 is provided inside, so that the opening valve cavity under the opening valve core 29 will not become a dead space.
  • the closing bypass oil passage and the opening bypass oil passage are not provided.
  • the elasticity of the third return spring and the fourth return spring are both greater than the pressure of the P cavity.
  • the closing valve cavity below the closing valve core is the closing cavity.
  • the closing cavity is communicated with the closing valve body to ensure that the closing cavity is not It will become a dead space, and the opening valve cavity under the opening valve core is the opening cavity, and the opening cavity is connected to the body of the opening valve to ensure that the opening cavity will not become a dead space.
  • control valve of the hydraulic operating mechanism of the present application has the same structure as the control valve described in any one of the above specific embodiments 1-5 of the hydraulic operating mechanism. I won't repeat them here.
  • the control valve of the hydraulic operating mechanism includes a high-pressure oil port, a working oil port, and a low-pressure oil port; the control valve also includes a closing control valve unit, an opening control valve unit and a driving part;
  • the closing control valve unit includes a valve body, a valve core and a driving part; the valve body is provided with an oil inlet, an oil outlet, and an oil inlet and an oil outlet.
  • the oil inlet and the oil outlet are respectively Connected with the oil inlet and outlet, a valve port is arranged between the oil inlet and the oil outlet;
  • the valve core is movably arranged in the valve body for blocking and opening the valve port;
  • the valve body is provided with a valve core Spring;
  • the oil inlet of the closing control valve unit forms the high-pressure oil port,
  • the oil outlet of the opening control valve unit forms the low-pressure oil port, and the oil inlet of the opening and closing control valve unit forms a working oil port;
  • the driving part is used to drive the valve core to move to open the valve port;
  • the driving part is connected with a repulsive force mechanism, and the repulsive force mechanism is used to drive the driving part to move.
  • the repulsion mechanism directly controls the opening and closing of the corresponding control valve unit to realize the on and off of the oil passage of the hydraulic operating mechanism, thereby driving the working cylinder to open or close, reducing the action links of the intermediate multi-stage valve and shortening
  • the response time of the component can meet the opening and closing action time requirements of the fast switch of the power grid system, reduce the short-circuit current of the circuit breaker opening, and improve the safety of the power grid system.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

一种液压操动机构及其控制阀。该液压操动机构的控制阀，包括高压油口、工作油口和低压油口；控制阀还包括合闸控制阀单元、分闸控制阀单元及驱动件；分、合闸控制阀单元均包括阀体（11、15）、阀芯（24、29）和驱动件；阀体（11、15），其上设有进油口、出油口，还设有进油道（22、27）和出油道（21、26），进油道（22、27）和出油道（21、26）分别与进油口和出油口连通，进油道（22、27）和出油道（21、26）之间设有阀口（33、34）；阀芯（24、29），活动设置在阀体（11、15）内，用于封堵和打开所述阀口（33、34）；阀体（11、15）内设有阀芯弹簧；合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，分、合闸控制阀单元的进油口形成工作油口；驱动件，用于带动阀芯（24、29）动作以打开阀口（33、34）；驱动件连接有斥力机构（5、19），斥力机构（5、19）用于驱动所述驱动件动作。

Description

一种液压操动机构及其控制阀
相关申请的交叉引用
本公开基于申请号为202011264273.9、申请日为2020年11月12日,和申请号为202010191727.8、申请日为2020年03年18日的中国专利申请提出，并要求上述中国专利申请的优先权，上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及液压设备领域，尤其涉及一种液压操动机构及液压控制阀。
背景技术
快速开关是电力输送的关键设备，而操动机构是快速开关的关键部件。快速开关的操动机构主要分为液压操动机构、弹簧操动机构及气动操动机构等，其中，液压操动机构以其输出功率大、可靠性高等特点被广泛应用。
现有技术中的一种液压操动机构如图1所示，包括工作缸101，工作缸101具有活塞腔102，活塞腔102内密封滑动装配有活塞107，活塞107上固定有活塞杆103，活塞杆103由工作缸101中穿出，活塞杆103的伸出端通过传动机构与主断口的动端部分传动连接，其中，活塞107和活塞杆103构成了活塞组件，活塞组件将活塞腔102分割为有杆腔和无杆腔；还包括蓄能器106，蓄能器106与有杆腔之间通过高压油道相连。在无杆腔上连接有两位三通阀104，两位三通阀104为电磁控制阀，两位三通阀104具有Z口、P口以及T口，Z口与无杆腔相连，P口与蓄能器106相连，T口与油箱105相连。两位三通阀104的阀芯具有两个位置，阀芯处于左位时，Z口和P口连通，蓄能器106内的高压油流入无杆腔内，推动活塞组件向有 杆腔移动，活塞杆103带动主断口合闸；阀芯处于右位时，Z口和T口连通，无杆腔内的液压油回流至油箱105内，有杆腔内的高压油推动活塞组件向无杆腔移动，活塞杆103带动主断口分闸。
现有技术中的液压操动机构的电磁控制阀固有响应时间长，而且为了保证电磁控制阀的电磁铁有足够的输出力，其结构一般采取多级放大的方式，从电磁铁线圈带电，到动铁芯动作、一级阀动作、二级阀动作、主阀动作，最后到液压操动机构动作，固有动作时间较长。此时常规的液压操动机构已经无法满足快速开关的动作时间要求。
申请内容
本申请的目的在于提供一种液压操动机构，以解决现有技术中的液压操动机构无法满足快速开关的动作时间要求的技术问题；本申请的目的还在于提供一种液压操动机构的控制阀，以解决现有技术中的液压操动机构无法满足快速开关的动作时间要求的技术问题。
为实现上述目的，本申请液压操动机构的技术方案是：
液压操动机构，包括：
工作缸，工作缸包括有杆腔和无杆腔，有杆腔连接有高压油源；
控制阀，包括高压油口、工作油口和低压油口；
所述高压油口与高压油源连通，工作油口与所述无杆腔连通，低压油口与油箱连通；
所述控制阀还包括合闸控制阀单元、分闸控制阀单元及驱动件；
合闸控制阀单元和分闸控制阀单元均包括阀体、阀芯和驱动件；
阀体，其上设有进油口、出油口，还设有进油道和出油道，进油道和出油道分别与进油口和出油口连通，进油道和出油道之间设有阀口；
阀芯，活动设置在阀体内，用于封堵和打开所述阀口；
阀体内设有阀芯弹簧，阀芯弹簧用于对阀芯施加封堵阀口的作用力；
合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，合闸控制阀单元的出油口和分闸控制阀单元的进油口形成所述工作油口；
驱动件，对应于阀芯设置，用于带动阀芯动作以打开所述阀口；
所述驱动件连接有斥力机构，斥力机构用于驱动所述驱动件动作。
有益效果是：通过斥力机构直接控制相应控制阀单元的打开和关闭，以实现液压操动机构油道的通断，从而驱动工作缸进行分闸或合闸操作，减少了中间多级阀的动作环节，缩短了元件的响应时间，能够满足电网系统的快速开关的分合闸动作时间要求，减小断路器开断的短路电流，提高电网系统的安全性。
进一步的，所述阀口由进油道远离高压油口的一端端部开口形成；
阀体内设有阀腔，阀芯滑动密封设置在阀腔中；
阀芯背向阀口的一侧设有活动腔室，活动腔室用于为阀芯提供活动空间，活动腔室与进油道之间设有旁路油道。
有益效果是：使阀芯背向阀口一侧的活动腔室不会变成死腔，进而保证阀芯动作的灵活性。
进一步的，所述驱动件滑动密封装配在阀体上且穿入所述进油道内。
有益效果是：驱动件穿入进油道带动阀芯动作，减少了在阀体上的开孔，不仅减少了加工工序，而且也能较好的保证阀体的密封性能。
进一步的，所述驱动件与阀芯相互分离；
所述斥力机构包括斥力盘和斥力盘复位弹簧，在斥力盘带动驱动件顶推阀芯打开后，斥力盘复位弹簧用于带动斥力盘复位，以使驱动件解除对阀芯顶推。
有益效果是：将驱动件与阀芯相互分离设置，便于斥力机构带动驱动件解除对阀芯顶推。
进一步的，所述阀芯上设有密封球面，密封球面用于与阀口密封配合。
有益效果是：通过密封球面与阀口密封配合，密封效果较好。
为实现上述目的，本申请液压操动机构的控制阀的技术方案是：
液压操动机构的控制阀，包括高压油口、工作油口和低压油口；
高压油口用于与高压油源连通，工作油口用于与无杆腔连通，低压油口用于与油箱连通；
还包括合闸控制阀单元、分闸控制阀单元及驱动件；
合闸控制阀单元和分闸控制阀单元均包括阀体、阀芯和驱动件；
阀体，其上设有进油口、出油口，还设有进油道和出油道，进油道和出油道分别与进油口和出油口连通，进油道和出油道之间设有阀口；
阀芯，活动设置在阀体内，用于封堵和打开所述阀口；
阀体内设有阀芯弹簧，阀芯弹簧用于对阀芯施加封堵阀口的作用力；
合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，合闸控制阀单元的出油口和分闸控制阀单元的进油口形成所述工作油口；
驱动件，对应于阀芯设置，用于带动阀芯动作以打开所述阀口；
所述驱动件连接有斥力机构，斥力机构用于驱动所述驱动件动作。
有益效果是：通过斥力机构直接控制相应控制阀单元的打开和关闭，以实现液压操动机构油道的通断，从而驱动工作缸进行分闸或合闸操作，减少了中间多级阀的动作环节，缩短了元件的响应时间，能够满足电网系统的快速开关的分合闸动作时间要求，减小断路器开断的短路电流，提高电网系统的安全性。
进一步的，所述阀口由进油道远离高压油口的一端端部开口形成；
阀体内设有阀腔，阀芯滑动密封设置在阀腔中；
阀芯背向阀口的一侧设有活动腔室，活动腔室用于为阀芯提供活动空 间，活动腔室与进油道之间设有旁路油道。
有益效果是：使阀芯背向阀口一侧的活动腔室不会变成死腔，进而保证阀芯动作的灵活性。
进一步的，所述驱动件滑动密封装配在阀体上且穿入所述进油道内。
有益效果是：驱动件穿入进油道带动阀芯动作，减少了在阀体上的开孔，不仅减少了加工工序，而且也能较好的保证阀体的密封性能。
进一步的，所述驱动件与阀芯相互分离；
所述斥力机构包括斥力盘和斥力盘复位弹簧，在斥力盘带动驱动件顶推阀芯打开后，斥力盘复位弹簧用于带动斥力盘复位，以使驱动件解除对阀芯顶推。
有益效果是：将驱动件与阀芯相互分离设置，便于斥力机构带动驱动件解除对阀芯顶推。
进一步的，所述阀芯上设有密封球面，密封球面用于与阀口密封配合。
有益效果是：通过密封球面与阀口密封配合，密封效果较好。
附图说明
图1为现有技术中液压操动机构的结构示意图；
图2为本申请液压操动机构的具体实施例1的结构示意图；
图3为图2中合闸控制阀单元的结构示意图；
图4为图2中分闸控制阀单元的结构示意图。
图1中：101-工作缸；102-活塞腔；103-活塞杆；104-两位三通阀；105-油箱；106-蓄能器；107-活塞；
图2至图4中：1-工作缸；2-活塞杆；3-活塞；4-蓄能器；5-合闸斥力机构；6-第一复位弹簧；7-合闸法兰结构；8-合闸驱动杆；9-合闸旁路油道；10-合闸挡板；11-合闸阀体；12-分闸旁路油道；13-分闸挡板；14-油箱；15-分闸阀体；16-分闸驱动杆；17-分闸法兰结构；18-第二复位弹簧；19-分闸 斥力机构；20-动端部分；21-合闸出油道；22-合闸进油道；23-第三复位弹簧；24-合闸阀芯；25-合闸阀球；26-分闸出油道；27-分闸进油道；28-第四复位弹簧；29-分闸阀芯；30-分闸阀球；31-合闸活动腔室；32-分闸活动腔室；33-合闸阀口；34-分闸阀口。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请，即所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，术语“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。此外，术语“上”、“下”是基于附图所示的方位和位置关系，仅是为了便于描述本申请，而不是指示所指的装置或部件必须具有特定的方位，因此不能理解为对本申请的限制。
以下结合实施例对本申请的特征和性能作进一步的详细描述。
本申请液压操动机构的具体实施例1：
如图2所示，液压操动机构包括工作缸1，工作缸1具有活塞腔，活塞腔内密封滑动装配有活塞3，活塞3上固定有活塞杆2，活塞杆2由工作缸1中穿出，活塞杆2伸出工作缸1的一端通过传动机构与主断口的动端部分20传动连接；还包括控制阀，控制阀包括合闸控制阀单元和分闸控制阀单元。其中，活塞3和活塞杆2构成了活塞组件，活塞组件将活塞腔分割成有杆腔和无杆腔。
本实施例中，在有杆腔上通过油道连接有蓄能器4，蓄能器4通过油道连接合闸控制阀单元。如图2和图3所示，合闸控制阀单元包括合闸阀体11，合闸阀体11具有合闸阀腔，合闸阀体11上设有合闸进油道22和合闸出油道21，合闸进油道22连通合闸阀腔和蓄能器4；合闸出油道21连通合闸阀腔和无杆腔，合闸出油道21与无杆腔连通的出油口构成工作油口。合闸进油道22和合闸出油道21通过合闸阀腔实现连通。其中，蓄能器4构成高压油源。
合闸阀腔内布置有合闸阀芯24和第三复位弹簧23，第三复位弹簧23构成阀芯弹簧。合闸阀芯24包括合闸阀球25，合闸阀球25设置在合闸阀芯24远离第三复位弹簧23的一侧，合闸阀球25具有密封球面，第三复位弹簧23顶压在合闸阀芯24上，以使合闸阀球25与合闸阀口33密封配合，进而切断合闸进油道22和合闸出油道21。其中，合闸阀腔的下方设有合闸挡板10，合闸挡板10用于封堵合闸阀腔。
本实施例中，合闸阀芯24下方设有合闸活动腔室31，合闸阀体11内还设有合闸旁路油道9，合闸旁路油道9连通合闸进油道22和合闸活动腔室31，使合闸阀芯24下方的合闸活动腔室31不会变成死腔，进而保证合闸阀芯24动作灵活。
本实施例中，合闸进油道22具有合闸阀口33和合闸进油口，合闸进油口形成高压油口，合闸进油口与蓄能器连通。合闸阀口33与合闸阀腔连通，该合闸阀口33的中心线与合闸阀腔的中心线重合，合闸阀体上密封滑动装配有合闸驱动杆8，合闸驱动杆8的下端穿过合闸阀口33。在合闸斥力机构5的驱动下，合闸驱动杆8驱动合闸阀球25向下移动，以实现合闸进油道22和合闸出油道21的连通。其中，合闸驱动杆8构成合闸驱动件。
如图2所示，合闸驱动杆8和合闸斥力机构5上均设有连接法兰，合闸斥力机构5通过合闸法兰结构7与合闸驱动杆8固定连接，合闸斥力机构5包括斥力盘和第一复位弹簧6，第一复位弹簧6能够保证斥力盘动作后回复原位，而且保证每次动作时的初始位置一致，有利于保证产品动作参数的稳定。其中，第一复位弹簧6构成斥力盘复位弹簧。
如图2和图4所示，分闸控制阀单元包括分闸阀体15，分闸阀体15具有分闸阀腔，分闸阀体15上设有分闸进油道27和分闸出油道26，分闸进油道27连通分闸阀腔和无杆腔；分闸出油道26连通合闸阀腔和油箱14，分闸出油道与油箱连通的出油口构成低压油口。分闸进油道27和分闸出油道26通过分闸阀腔实现连通。
分闸阀腔内布置有分闸阀芯29和第四复位弹簧28，第四复位弹簧28构成阀芯弹簧。分闸阀芯29包括分闸阀球30，分闸阀球30设置在分闸阀芯29远离第四复位弹簧28的一侧，分闸阀球30具有密封球面，第四复位弹簧28顶压在分闸阀芯29上，以使分闸阀球30与分闸阀口34密封配合，进而切断分闸进油道27和分闸出油道26。其中，分闸阀腔的下方设有分闸挡板13，分闸挡板13用于封堵分闸阀腔。
本实施例中，分闸阀芯29下方设有分闸活动腔室32，分闸阀体15内还设有分闸旁路油道12，分闸旁路油道12连通分闸进油道27和分闸阀芯29下方的分闸活动腔室32，使分闸阀芯29下方的分闸活动腔室32不会变 成死腔，进而保证分闸阀芯29动作灵活。
本实施例中，分闸进油道27具有分闸阀口34和分闸进油口，分闸进油口形成工作油口，分闸进油口与无杆腔连通。分闸阀口34与分闸阀腔连通，该分闸阀口34的中心线与分闸阀腔的中心线重合，分闸阀体上密封滑动装配有分闸驱动杆16，分闸驱动杆16的下端穿过分闸阀口34。在分闸斥力机构19的驱动下，分闸驱动杆16驱动分闸阀球30向下移动，以实现分闸进油道27和分闸出油道26的连通。其中，分闸驱动杆16构成分闸驱动件。
如图2所示，分闸驱动杆16和分闸斥力机构19上均设有连接法兰，分闸斥力机构19通过分闸法兰结构17与分闸驱动杆16固定连接，分闸斥力机构19包括斥力盘和第二复位弹簧18，第二复位弹簧18能够保证斥力盘动作后回复原位，而且保证每次动作时的初始位置一致，有利于保证产品动作参数的稳定。其中，第二复位弹簧18构成斥力盘复位弹簧。
本实施例中，合闸斥力机构和分闸斥力机构均构成驱动装置。斥力机构为现有成熟产品，靠自身止位，斥力机构驱动工作缸的响应时间约为传统电磁控制阀响应时间的1/5～1/4，而且输出力大，完全可以克服液压阻力，从而直接控制液压操动机构油道的通断。
如图2所示，P腔与蓄能器4相连，其内一直是高压油。Z腔与无杆腔相连，在合闸位置时和P腔连通，是高压油；在分闸位置时和T腔连通，是低压油。T腔与油箱相连，一直是低压油。
该液压操动机构在进行合闸操作时，合闸斥力机构5动作，驱动合闸驱动杆8顶开合闸阀球25，合闸进油道22和合闸出油道21连通，P腔内的液压油进入Z腔，此时P腔和Z腔均为高压油，由于无杆腔的活塞面积大于有杆腔活塞面积，因此，活塞杆2在压差作用下向有杆腔运动，从而驱动主断口的动端部分20完成合闸操作，之后合闸斥力机构5在第一复位 弹簧6的作用下回复原位。在进行分闸操作时，分闸斥力机构19动作，驱动分闸驱动杆16顶开分闸阀球30，分闸进油道27和分闸出油道26连通，Z腔的液压油进入到T腔，此时P腔为高压油，Z腔为低压油，因此，活塞杆2压差作用下向无杆腔运动，从而驱动主断口的动端部分20完成分闸操作，之后分闸斥力机构19在第二复位弹簧18的作用下回复原位，完成了分合闸操作。
本申请的液压操动机构通过斥力机构直接控制液压操动机构油道的通断，从而驱动工作缸进行分闸或合闸操作，减少了中间控制阀的动作环节，缩短了元件的响应时间，能够满足电网系统的快速开关的分闸动作时间要求，减小断路器开断的短路电流，提高电网系统的安全性。
本申请液压操动机构的具体实施例2：
与具体实施例1的区别在于，实施例1中，合闸驱动杆8从合闸阀芯24的上方驱动合闸阀芯24，分闸驱动杆16从分闸阀芯29的上方驱动分闸阀芯29，本实施例中，合闸驱动杆密封滑动装配在合闸阀体上于合闸阀芯的下部，且合闸驱动杆穿过第三复位弹簧与合闸阀芯固定连接；同时，分闸驱动杆密封滑动装配在分闸阀体上于分闸阀芯的下部，且分闸驱动杆穿过第四复位弹簧与分闸阀芯固定连接。
本申请液压操动机构的具体实施例3：
与具体实施例1的区别在于，实施例1中，合闸阀芯24包括合闸阀球25，合闸阀芯24通过合闸阀球25切断合闸进油道22和合闸出油道21；分闸阀芯29包括分闸阀球30，分闸阀芯29通过分闸阀球30切断分闸进油道27和分闸出油道26，本实施例中，合闸阀芯背向第三复位弹簧的一侧设有合闸锥形结构，合闸阀芯通过分闸锥形结构合闸阀口密封配合；同时分闸阀芯背向第四复位弹簧的一侧设有分闸锥形结构，分闸阀芯通过分闸锥形结构与分闸阀口密封配合。
本申请液压操动机构的具体实施例4：
与具体实施例1的区别在于，实施例1中，分闸驱动杆16和合闸驱动杆8上均设有连接法兰，两个驱动杆分别通过连接法兰与相应斥力机构固定连接，本实施例中，分闸驱动杆和合闸驱动杆远离相应阀体的一端沿其径向设有螺纹孔，相应斥力机构的输出端为套筒结构，套筒结构上设有沿其径向延伸的通孔，螺栓穿过通孔并旋拧在螺纹孔上，以实现分闸驱动杆和合闸驱动杆与相应斥力机构的固定连接。在其他实施例中，分闸驱动杆和合闸驱动杆与相应斥力机构也可以通过螺纹连接。
本申请液压操动机构的具体实施例5：
与具体实施例1的区别在于，实施例1中，合闸阀体11内设有合闸旁路油道9，使合闸阀芯24下方的合闸阀腔不会变成死腔，分闸阀体15内设有分闸旁路油道12，使分闸阀芯29下方的分闸阀腔不会变成死腔，本实施例中，不设置合闸旁路油道和分闸旁路油道，第三复位弹簧和第四复位弹簧的弹性均大于P腔的压力，合闸阀芯下方的合闸阀腔为合闸空腔，该合闸空腔与合闸阀体外连通，以保证该合闸空腔不会变成死腔，分闸阀芯下方的分闸阀腔为分闸空腔，该分闸空腔与分闸阀体外连通，以保证该分闸空腔不会变成死腔。
本申请液压操动机构的控制阀的具体实施例，本实施例中液压操动机构的控制阀与上述液压操动机构的具体实施例1-5中任一个所述的控制阀的结构相同，在此不再赘述。
以上所述，仅为本申请的较佳实施例，并不用以限制本申请，本申请的专利保护范围以权利要求书为准，凡是运用本申请的说明书及附图内容所作的等同结构变化，同理均应包含在本申请的保护范围内。
工业实用性
本公开实施例的技术方案，液压操动机构的控制阀，包括高压油口、 工作油口和低压油口；控制阀还包括合闸控制阀单元、分闸控制阀单元及驱动件；分、合闸控制阀单元均包括阀体、阀芯和驱动件；阀体，其上设有进油口、出油口，还设有进油道和出油道，进油道和出油道分别与进油口和出油口连通，进油道和出油道之间设有阀口；阀芯，活动设置在阀体内，用于封堵和打开所述阀口；阀体内设有阀芯弹簧；合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，分、合闸控制阀单元的进油口形成工作油口；驱动件，用于带动阀芯动作以打开阀口；驱动件连接有斥力机构，斥力机构用于驱动所述驱动件动作。通过斥力机构直接控制相应控制阀单元的打开和关闭，以实现液压操动机构油道的通断，从而驱动工作缸进行分闸或合闸操作，减少了中间多级阀的动作环节，缩短了元件的响应时间，能够满足电网系统的快速开关的分合闸动作时间要求，减小断路器开断的短路电流，提高电网系统的安全性。

Claims (10)

  1. 液压操动机构，包括：
    工作缸，工作缸包括有杆腔和无杆腔，有杆腔连接有高压油源；
    控制阀，包括高压油口、工作油口和低压油口；
    所述高压油口与高压油源连通，工作油口与所述无杆腔连通，低压油口与油箱连通；
    其中，
    所述控制阀还包括合闸控制阀单元、分闸控制阀单元及驱动件；
    合闸控制阀单元和分闸控制阀单元均包括阀体、阀芯和驱动件；
    阀体，其上设有进油口、出油口，还设有进油道和出油道，进油道和出油道分别与进油口和出油口连通，进油道和出油道之间设有阀口；
    阀芯，活动设置在阀体内，用于封堵和打开所述阀口；
    阀体内设有阀芯弹簧，阀芯弹簧用于对阀芯施加封堵阀口的作用力；
    合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，合闸控制阀单元的出油口和分闸控制阀单元的进油口形成所述工作油口；
    驱动件，对应于阀芯设置，用于带动阀芯动作以打开所述阀口；
    所述驱动件连接有斥力机构，斥力机构用于驱动所述驱动件动作。
  2. 根据权利要求1所述的液压操动机构，其中，所述阀口由进油道远离高压油口的一端端部开口形成；
    阀体内设有阀腔，阀芯滑动密封设置在阀腔中；
    阀芯背向阀口的一侧设有活动腔室，活动腔室用于为阀芯提供活动空间，活动腔室与进油道之间设有旁路油道。
  3. 根据权利要求2所述的液压操动机构，其中，所述驱动件滑动密封装配在阀体上且穿入所述进油道内。
  4. 根据权利要求1或2或3所述的液压操动机构，其中，所述驱动件与阀芯相互分离；
    所述斥力机构包括斥力盘和斥力盘复位弹簧，在斥力盘带动驱动件顶推阀芯打开后，斥力盘复位弹簧用于带动斥力盘复位，以使驱动件解除对阀芯顶推。
  5. 根据权利要求1或2或3所述的液压操动机构，其中，所述阀芯上设有密封球面，密封球面用于与阀口密封配合。
  6. 液压操动机构的控制阀，包括高压油口、工作油口和低压油口；
    高压油口用于与高压油源连通，工作油口用于与无杆腔连通，低压油口用于与油箱连通；
    其中，
    还包括合闸控制阀单元、分闸控制阀单元及驱动件；
    合闸控制阀单元和分闸控制阀单元均包括阀体、阀芯和驱动件；
    阀体，其上设有进油口、出油口，还设有进油道和出油道，进油道和出油道分别与进油口和出油口连通，进油道和出油道之间设有阀口；
    阀芯，活动设置在阀体内，用于封堵和打开所述阀口；
    阀体内设有阀芯弹簧，阀芯弹簧用于对阀芯施加封堵阀口的作用力；
    合闸控制阀单元的进油口形成所述高压油口，分闸控制阀单元的出油口形成所述低压油口，合闸控制阀单元的出油口和分闸控制阀单元的进油口形成所述工作油口；
    驱动件，对应于阀芯设置，用于带动阀芯动作以打开所述阀口；
    所述驱动件连接有斥力机构，斥力机构用于驱动所述驱动件动作。
  7. 根据权利要求6所述的液压操动机构的控制阀，其中，所述阀口由进油道远离高压油口的一端端部开口形成；
    阀体内设有阀腔，阀芯滑动密封设置在阀腔中；
    阀芯背向阀口的一侧设有活动腔室，活动腔室用于为阀芯提供活动空间，活动腔室与进油道之间设有旁路油道。
  8. 根据权利要求7所述的液压操动机构的控制阀，其中，所述驱动件滑动密封装配在阀体上且穿入所述进油道内。
  9. 根据权利要求6或7或8所述的液压操动机构的控制阀，其中，所述驱动件与阀芯相互分离；
    所述斥力机构包括斥力盘和斥力盘复位弹簧，在斥力盘带动驱动件顶推阀芯打开后，斥力盘复位弹簧用于带动斥力盘复位，以使驱动件解除对阀芯顶推。
  10. 根据权利要求6或7或8所述的液压操动机构的控制阀，其中，所述阀芯上设有密封球面，密封球面用于与阀口密封配合。
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