CN111677879B - Bidirectional throttle valve and pantograph air supply control system formed by same - Google Patents

Bidirectional throttle valve and pantograph air supply control system formed by same Download PDF

Info

Publication number
CN111677879B
CN111677879B CN202010611785.1A CN202010611785A CN111677879B CN 111677879 B CN111677879 B CN 111677879B CN 202010611785 A CN202010611785 A CN 202010611785A CN 111677879 B CN111677879 B CN 111677879B
Authority
CN
China
Prior art keywords
chamber
inner core
valve
throttle valve
outer core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010611785.1A
Other languages
Chinese (zh)
Other versions
CN111677879A (en
Inventor
李海超
郝翰
张斌
姜葛
孙川
肖阳华
华利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Ziyang Co Ltd
Original Assignee
CRRC Ziyang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Ziyang Co Ltd filed Critical CRRC Ziyang Co Ltd
Priority to CN202010611785.1A priority Critical patent/CN111677879B/en
Publication of CN111677879A publication Critical patent/CN111677879A/en
Application granted granted Critical
Publication of CN111677879B publication Critical patent/CN111677879B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/22—Supporting means for the contact bow
    • B60L5/28—Devices for lifting and resetting the collector
    • B60L5/32—Devices for lifting and resetting the collector using fluid pressure
    • 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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The invention relates to the technical field of power control, in particular to a structure of a pneumatic valve and a hydraulic valve, and particularly relates to a bidirectional throttle valve and a pantograph air supply control system formed by the same; the outer core is provided with a pressure relief opening, and the inner core is in sliding fit with the outer core and is used for opening and closing the pressure relief opening; the first chamber is internally provided with a first elastic component for propping the outer core, and the second chamber is internally provided with a second elastic component for propping the inner core. The air supply control system adopts the bidirectional throttle valve, the structure is more simplified, the pantograph lifting and lowering operation of the pantograph can be realized by only adopting one throttle valve, the operation is simple, and the efficiency is higher.

Description

Bidirectional throttle valve and pantograph air supply control system formed by same
Technical Field
The invention relates to the technical field of power control, in particular to structures of a pneumatic valve and a hydraulic valve, and especially relates to a bidirectional throttle valve and a pantograph air supply control system formed by the bidirectional throttle valve.
Background
The electric traction locomotive obtains electric energy from the overhead contact system and is used as driving energy, and the electric traction locomotive is mainly realized through a pantograph; the pantograph is close to the contact net and obtains electric energy after rising, and is far away from the contact net and stops obtaining the electric energy after descending. In the process of controlling the lifting of the pantograph, the prior art adopts a pneumatic control system or a hydraulic control system and controls by arranging two sets of throttle valve devices for lifting and lowering the pantograph, so that the whole set of control system has a complex structure and large occupied space, and the later maintenance is inconvenient.
Therefore, the existing pantograph lifting control system has unreasonable design, needs to be improved and optimized to obtain a more reasonable technical scheme, and solves the defects in the prior art.
Disclosure of Invention
In order to overcome the defects of the prior art mentioned in the content, the invention provides a bidirectional throttle valve and a pantograph air supply control system formed by the bidirectional throttle valve, and aims to improve the throttle valve structure of pantograph lifting control, realize bidirectional control of a valve body, simplify the composition structure of a control system, simplify the operation of the system and facilitate control and maintenance; due to the adoption of bidirectional throttling control, the pantograph can avoid equipment damage caused by too high action speed in the lifting process.
In order to achieve the above purpose, the invention firstly improves the structure of the bidirectional throttle valve, and adopts the technical scheme that:
the two-way throttle valve comprises a valve body and a valve core, wherein a first cavity for communicating pressure medium and a second cavity for communicating an executing component are arranged in the valve body, a communication port is arranged between the first cavity and the second cavity, the valve core comprises an outer core and an inner core which are arranged in a sleeved mode, the outer core slides in the first cavity, the outer core opens the communication port under the action of the pressure medium, and a first elastic component for propping against the outer core and enabling the outer core to close the communication port is arranged in the first cavity; the outer core on be provided with the pressure release mouth of intercommunication first cavity and second cavity, inner core and outer core sliding fit and inner core open the pressure release mouth under pressure medium effect, be equipped with in the second cavity and be used for supporting tight inner core and make the second elastic component of inner core seal the pressure release mouth.
According to the bidirectional throttle valve disclosed by the invention, the two chambers are alternately pressurized to push the valve core to move so as to change the trend of a high-pressure fluid medium, thereby realizing bidirectional regulation and throttle. The working principle of the two-way throttle valve is as follows: the second cavity is communicated with an external fluid pressure medium, when the high-pressure fluid pressure medium enters the second cavity and acts on the lower surfaces of the outer core and the inner core, the outer core moves towards the first cavity against the acting force of the first elastic component, the communication port is opened, the inner core moves along with the outer core under the acting force of the high-pressure fluid pressure medium and the second elastic component and always closes the pressure relief port, and the high-pressure fluid pressure medium enters the first cavity and is conveyed to the execution component to realize action; when the executing component adjusts the gesture, fluid pressure medium from the executing component enters into and flows back to the second chamber, the top of the outer core receives pressure to face the second chamber and seals the communication port, the high-pressure fluid medium pushes the inner core to overcome the thrust of the second elastic component from the pressure release port to move, the pressure release port is opened, and the high-pressure fluid medium returns to the second chamber from the pressure release port, so that pressure release is realized, and the fluid pressure medium is conveyed outwards from the second chamber, so that gesture adjustment of the executing component is realized.
Further, the inner core is tightly propped against the pressure relief opening through the second elastic component, when the pressure of the fluid pressure medium in the first cavity acting on the inner core is larger than the propping force of the second elastic component, the inner core can be pushed, and otherwise, the pressure cannot be relieved. In order to realize that the pressure can be relieved under the condition, the residual fluid pressure medium in the first cavity is avoided, the structure of the inner core is optimized, and the following feasible scheme is specifically shown: the inner core on be equipped with damping pressure release passageway, damping pressure release passageway's one end communicates to the pressure release mouth, the other end communicates to the second cavity. As one of many possible choices, the meaning of the arrangement is that the damping pressure release channel is arranged and communicated with the pressure release opening, and when the fluid pressure in the first chamber is greater than that in the second chamber, according to newton's third law, the fluid pressure medium in the first chamber automatically enters the second chamber through the damping pressure release channel to realize pressure balance.
Still further, after setting up the damping pressure release passageway, can avoid the fluid pressure medium in the first chamber to appear remaining, lead to the execution part posture adjustment not in place. Meanwhile, the damping pressure relief channel is optimized, the aperture of the damping pressure relief channel is extremely small and is generally set to be 0.5-1.5 mm, and the aperture of the pressure relief opening is generally set to be 10-20 mm. After the device is arranged, the pressure release speed of the fluid pressure medium through the damping pressure release channel is lower, so that the final stroke of the gesture adjustment of the execution part is reduced, and the damage to equipment caused by the too high action speed is avoided.
Further, when the outer core moves towards the first cavity, the opening of the communication port can be met for realizing shorter displacement, the structures of the outer core and the communication port are optimized, and the following concrete and feasible scheme is given out: the contact surface between the outer core and the communication port is a conical surface, a step surface, an elliptical cambered surface or an arc surface. When the scheme is adopted, after the outer core is pushed and displaced towards the first cavity by the fluid pressure medium, an annular gap can be formed at the communication port, so that the fluid pressure medium can conveniently pass through, the working pressure of the fluid pressure medium can be reduced, and the strength requirement on the throttle valve is also reduced.
Further, the outer core and the inner core are slidably matched, and various structures can be specifically adopted, and specific feasible schemes are listed here: the outer core on be provided with the slide, the pressure release mouth communicates to the slide, the inner core slide in the slide.
Still further, to when the inner core removes towards the second cavity, can satisfy to open the pressure release mouth for realizing shorter displacement, optimize the structure of inner core and slide, the specific scheme is lifted here: the contact surface of the inner core and the slideway is a conical surface, a step surface, an elliptical cambered surface or an arc surface. By adopting the scheme, the fluid pressure medium enters the pushing inner core from the pressure relief opening to displace, and the annular gap can be formed at the pressure relief opening, so that the fluid pressure medium can conveniently pass through, the working pressure of the fluid pressure medium can be reduced, and the strength requirement on the throttle valve is also reduced.
Further, the setting of the pressure relief opening is optimized, and the following specific and feasible scheme is given as follows: the pressure relief opening set up the tip at the slide, the tip of inner core and the laminating of the tip of slide, and there is the clearance between the lateral wall of inner core and the lateral wall of slide. As one of many possible options, the meaning of this arrangement is that, by the end of the inner core abutting against the pressure relief opening, when the inner core is pushed by the fluid pressure medium, the fluid pressure medium can be released from the pressure relief opening outwards, so that the working pressure of the fluid pressure medium can be reduced.
Further, the first elastic component is optimized, and the following possible schemes are listed: the first elastic component comprises a pressing block located in the first cavity, a compression spring is arranged between the pressing block and the outer core, a first adjusting handle is further arranged on the valve body, and the first adjusting handle is in running fit with the valve body and adjusts the distance between the pressing block and the outer core.
Still further, the number of the pressing springs may be plural and arranged at intervals along the circumference of the outer periphery of the rotary rod of the first adjusting handle. The upper surface of the outer core can be provided with corresponding spring holes, and the springs are accommodated in the spring holes.
Further, the second elastic component is optimized, and the following possible schemes are listed: the second elastic component comprises a second adjusting handle, the second adjusting handle is in running fit with the valve body and adjusts the length of a rotating rod extending into the valve body, and the rotating rod is connected with the abutting spring and abuts against the inner core through the abutting spring.
The invention also discloses a technical scheme for applying the bidirectional throttle valve to a pantograph air supply control system, which comprises the following steps:
a pantograph air supply control system integrating a bidirectional throttle valve adopts the bidirectional throttle valve, wherein a first cavity of the bidirectional throttle valve is communicated with an air pipe of a pantograph, and a second cavity of the bidirectional throttle valve is sequentially communicated with an electromagnetic control valve, a pressure reducing valve and an air source.
Furthermore, the electromagnetic control valve adopts a two-position three-way electromagnetic valve. Wherein, a working position of the electromagnetic valve is communicated with an air source and a throttle valve, and a gaseous medium from the air source is conveyed to the second chamber to help the pantograph to adjust to the first posture; the other working position of the electromagnetic valve is used for disconnecting the air source and the throttle valve, communicating the second chamber of the throttle valve to the external pressure relief space, helping the pantograph to adjust to the second posture, and simultaneously realizing the pressure relief of the air throttle valve.
Compared with the prior art, the invention has the following beneficial effects:
the bidirectional throttle valve disclosed by the invention has the advantages of simple action relation and accurate control effect, and can be used for damping regulation and control on the pressurizing and pressure releasing processes of the fluid pressure medium, so that the transient overlarge pressure value of the fluid pressure medium can be avoided, and damage caused by too fast action of an executing component can be avoided.
The pantograph air supply control system has a more simplified structure, can realize the operation of raising and lowering the pantograph by only adopting one throttle valve, and has simple operation and higher efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the composition of a two-way throttle valve;
FIG. 2 is a schematic view of the structure of the outer core when the outer core is displaced to the first chamber to open the communication port;
FIG. 3 is a schematic view of the structure when the inner core is displaced toward the second chamber to open the pressure relief port;
FIG. 4 is a schematic illustration of the media flow when the fluid pressure media pressure in the first chamber cannot push against the spring;
fig. 5 is a schematic diagram showing the connection of the constituent elements of the air supply system.
In the above figures, the meaning of each symbol is: 1. a valve body; 2. a first chamber; 3. a second chamber; 4. a first adjustment handle; 5. briquetting; 6. a compression spring; 7. an inner core; 8. damping pressure release channel; 9. a communication port; 10. a pressure relief port; 11. a first media interface; 12. a second media interface; 13. a second adjustment handle; 14. a spring is abutted tightly; 15. an outer core; 16. a pressure reducing valve; 17. an electromagnetic control valve.
Detailed Description
The invention is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.
It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention. Specific structural and functional details disclosed herein are merely representative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Example 1
As shown in fig. 1, the present embodiment mainly solves the structural optimization of a throttle valve, and the existing throttle valve is generally a unidirectional throttle valve.
The scheme adopted is as follows: the bidirectional throttle valve comprises a valve body 1 and a valve core, wherein a first chamber 2 for communicating pressure medium and a second chamber 3 for communicating an executing component are arranged in the valve body 1, a communication port 9 is arranged between the first chamber 2 and the second chamber 3, the valve core comprises an outer core 15 and an inner core 7 which are arranged in a sleeved mode, the outer core 15 slides in the first chamber 2 and is used for opening and closing the communication port 9, and a first elastic component for abutting against the outer core 15 and enabling the outer core 15 to close the communication port 9 is arranged in the first chamber 2; the outer core 15 is provided with a pressure relief opening 10 communicated with the first chamber 2 and the second chamber 3, and a second elastic component used for propping against the inner core 7 and enabling the inner core 7 to seal the pressure relief opening 10 is arranged in the second chamber 3.
According to the bidirectional throttle valve disclosed by the embodiment, the two chambers are alternately pressurized to push the valve core to move so as to change the trend of a high-pressure fluid medium, so that bidirectional regulation and throttle are realized. The working principle of the two-way throttle valve is as follows: as shown in fig. 2, the second chamber 3 is communicated with external fluid pressure medium, when high-pressure fluid pressure medium enters the second chamber 3 and acts on the lower surfaces of the outer core 15 and the inner core 7, the outer core 15 moves towards the first chamber 2 against the acting force of the first elastic component, the communication port 9 is opened, in the process, the inner core 7 moves along with the outer core 15 under the acting force of the high-pressure fluid pressure medium and the second elastic component and always closes the pressure relief port 10, and the high-pressure fluid pressure medium enters the first chamber 2 and is conveyed to the execution component to realize action; as shown in fig. 3, when the posture of the execution component is adjusted, the fluid pressure medium from the execution component enters and flows back to the second chamber 3, the top of the outer core 15 receives pressure to face the second chamber 3 and seals the communication port 9, the high-pressure fluid medium pushes the inner core 7 from the pressure release port 10 to overcome the thrust of the second elastic component and move, the pressure release port 10 is opened, the high-pressure fluid medium returns to the second chamber 3 from the pressure release port 10, so that pressure release is realized, and the fluid medium is conveyed outwards from the second chamber 3, so that posture adjustment of the execution component is realized.
In this embodiment, the valve body 1 may be made of reinforced 95 steel, the first chamber 2 and the second chamber 3 inside are both cylindrical, and the outer core 15 and the inner core 7 are both cylindrical cores. The side wall of the first chamber 2 is provided with a first medium connection 11 and the side wall of the second chamber 3 is provided with a second medium connection 12.
The inner core 7 is abutted against the pressure relief opening 10 through the second elastic component, and when the pressure of the fluid pressure medium in the first cavity 2 acting on the inner core 7 is larger than the abutting force of the second elastic component, the inner core 7 can be pushed, otherwise, the pressure cannot be relieved. In order to achieve that in this case also a pressure relief is possible, avoiding the occurrence of residual fluid pressure medium in the first chamber 2, the structure of the inner core 7 is optimized, specifically by the following possible solutions: as shown in fig. 4, the inner core 7 is provided with a damping pressure release channel 8, one end of the damping pressure release channel 8 is communicated with the pressure release opening 10, and the other end is communicated with the second chamber 3. As one of many possible alternatives, this is provided in that the damping relief channel 8 is provided and the relief port 10 is connected, so that when the fluid pressure in the first chamber 2 is greater than that in the second chamber 3, according to newton's third law, the fluid pressure medium in the first chamber 2 automatically enters the second chamber 3 through the damping relief channel 8 to achieve pressure balance.
After the damping pressure release channel 8 is arranged, the phenomenon that the posture of an executing component is not adjusted in place due to the fact that the residual fluid pressure medium in the first chamber 2 exists can be avoided. Meanwhile, the damping pressure relief channel 8 is optimized, the aperture of the damping pressure relief channel 8 is set to be extremely small, in the embodiment, 1mm is set, and the caliber of the pressure relief opening 10 is generally 10-20 mm. After the device is arranged in this way, the pressure release speed of the fluid pressure medium through the damping pressure release channel 8 is slower, so that the final stroke of the executing component for adjusting the gesture can be reduced, and the damage to equipment caused by the too high action speed is avoided.
When the outer core 15 moves towards the first chamber 2, the opening of the communication port 9 can be satisfied for realizing shorter displacement, and the structures of the outer core 15 and the communication port 9 are optimized, so that the following specific and feasible scheme is adopted in the embodiment: the contact surface between the outer core 15 and the communication port 9 is a conical surface.
Meanwhile, the contact surface of the outer core 15 and the communication port 9 can also adopt a conical surface, a step surface, an elliptical cambered surface or an arc surface. No matter which of the above schemes is adopted, after the outer core 15 is pushed and displaced towards the first chamber 2 by the fluid pressure medium, an annular gap can be formed at the communication port 9, so that the fluid pressure medium can conveniently pass through, the working pressure of the fluid pressure medium can be reduced, and the strength requirement on the throttle valve is also reduced.
The outer core 15 is slidably engaged with the inner core 7, and may specifically take a variety of configurations, and specific possible solutions are set forth herein: the outer core 15 is provided with a slideway, the pressure relief opening 10 is communicated to the slideway, and the inner core 7 slides in the slideway.
When the inner core 7 moves towards the second cavity 3, the pressure relief opening 10 can be opened for realizing shorter displacement, the structures of the inner core 7 and the slide way are optimized, and the specific scheme is adopted in the embodiment: the contact surface of the inner core 7 and the slideway is a conical surface.
Meanwhile, the contact surface of the inner core 7 and the slideway can also adopt a conical surface, a step surface, an elliptic cambered surface or an arc surface. By adopting the scheme, fluid pressure medium enters from the pressure relief opening 10 to push the inner core 7 to displace, and annular gaps can be formed at the pressure relief opening 10, so that the fluid pressure medium can conveniently pass through, the working pressure of the fluid pressure medium can be reduced, and the strength requirement on the throttle valve is also reduced.
The setting of the pressure relief port 10 is optimized in this embodiment, and the following specific possible schemes are listed: the pressure relief opening 10 is arranged at the end part of the slideway, the end part of the inner core 7 is attached to the end part of the slideway, and a gap exists between the side wall of the inner core 7 and the side wall of the slideway. As one of the possible alternatives, this is provided in that the working pressure of the fluid pressure medium is reduced in that the fluid pressure medium is released from the pressure release opening 10 when the fluid pressure medium pushes the inner core 7 by the end of the inner core 7 against the pressure release opening 10.
In this embodiment, in order to make the pressure release smoother, the slide is set to be cylindrical, the top of the slide is set to be conical, the side wall of the inner core 7 is set to be cylindrical corresponding to the slide, and a gap of 1mm is kept between the side wall of the inner core 7 and the slide, and the end part of the inner core 7 is set to be conical and is matched and corresponding to the top of the slide.
The first elastic component is optimized, and the following possible schemes are listed: the first elastic component comprises a pressing block 5 positioned in the first chamber 2, a compression spring 6 is arranged between the pressing block 5 and the outer core 15, a first adjusting handle 4 is further arranged on the valve body 1, and the first adjusting handle 4 is in running fit with the valve body 1 and adjusts the distance between the pressing block 5 and the outer core 15.
In this embodiment, the number of the compression springs 6 is four, and the compression springs 6 are arranged at intervals along the circumference of the periphery of the rotary rod of the first adjusting handle 4, and each interval is 90 degrees. The upper surface of the outer core 15 is provided with corresponding spring holes, and the compression springs 6 are accommodated in the spring holes; the spring hole is a blind hole, and the depth of the spring hole is half of the length of the compression spring 6.
The second elastic component is optimized, and the following possible schemes are listed: the second elastic component comprises a second adjusting handle 13, the second adjusting handle 13 is in running fit with the valve body 1 and adjusts the length of a rotating rod extending into the valve body 1, and the rotating rod is connected with a tight supporting spring 14 and is tightly supported with the inner core 7 through the tight supporting spring 14. The abutting spring 14 is sleeved on a rotary rod of the second adjusting handle 13, and a limiting structure which is matched with the abutting spring 14 and used for axial limiting is arranged on the rotary rod, and can adopt a limiting shaft or a limiting step.
Example 2
The above embodiment discloses a technical solution of a bidirectional throttle valve, and this embodiment provides a technical solution of applying the bidirectional throttle valve in a pantograph air supply control system, which specifically includes:
as shown in fig. 5, a pantograph air supply control system integrated with a bidirectional throttle valve adopts the bidirectional throttle valve described in the embodiment 1, a first chamber 2 of the bidirectional throttle valve is communicated with an air pipe of the pantograph, and a second chamber 3 is sequentially communicated with an electromagnetic control valve 17, a pressure reducing valve 16 and an air source.
The electromagnetic control valve 17 adopts a two-position three-way electromagnetic valve. Wherein, a working position of the electromagnetic valve is communicated with an air source and a two-way throttle valve, and the air medium from the air source is conveyed to the second chamber 3 to help the pantograph to adjust to the first posture; the other working position of the electromagnetic valve is used for disconnecting the air source and the throttle valve, communicating the second chamber 3 of the throttle valve to the external pressure relief space, helping the pantograph to adjust to the second posture, and simultaneously realizing the pressure relief of the air throttle valve.
The embodiments of the present invention are exemplified above, but the present invention is not limited to the above-described alternative embodiments, and those skilled in the art can obtain various other embodiments by any combination of the above-described embodiments, and any person can obtain various other embodiments without departing from the scope of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.

Claims (8)

1. The utility model provides a two-way throttle valve, includes valve body (1) and case, its characterized in that: the valve is characterized in that a first chamber (2) and a second chamber (3) are arranged in the valve body (1), the first chamber (2) and the second chamber (3) are used for communicating pressure media or executing components, a communication port (9) is arranged between the first chamber (2) and the second chamber (3), the valve core comprises an outer core (15) and an inner core (7) which are arranged in a sleeved mode, the outer core (15) slides in the first chamber (2), the outer core (15) opens the communication port (9) under the action of the pressure media, and a first elastic assembly used for abutting against the outer core (15) and enabling the outer core (15) to close the communication port (9) is arranged in the first chamber (2); the outer core (15) is provided with a pressure relief opening (10) communicated with the first cavity (2) and the second cavity (3), the inner core (7) is in sliding fit with the outer core (15), the inner core (7) opens the pressure relief opening (10) under the action of pressure medium, and the second cavity (3) is internally provided with a second elastic component used for propping against the inner core (7) and enabling the inner core (7) to seal the pressure relief opening (10);
a damping pressure release channel (8) is arranged on the inner core (7), one end of the damping pressure release channel (8) is communicated with the pressure release opening (10), and the other end of the damping pressure release channel is communicated with the second chamber (3);
the second elastic component comprises a second adjusting handle (13), the second adjusting handle (13) is in running fit with the valve body (1) and adjusts the length of a rotating rod extending into the valve body (1), and the rotating rod is connected with a tight supporting spring (14) and is tightly supported with the inner core (7) through the tight supporting spring (14).
2. The two-way throttle valve of claim 1, wherein: the contact surface of the outer core (15) and the communication port (9) is a conical surface, a step surface, an elliptic cambered surface or an arc surface.
3. The two-way throttle valve of claim 1, wherein: the outer core (15) is provided with a slideway, the pressure relief opening (10) is communicated to the slideway, and the inner core (7) slides in the slideway.
4. A two-way throttle valve according to claim 3, characterized in that: the contact surface of the inner core (7) and the slideway is a conical surface, a step surface, an elliptic cambered surface or an arc surface.
5. The two-way throttle valve according to claim 3 or 4, characterized in that: the pressure relief opening (10) is arranged at the end part of the slideway, the end part of the inner core (7) is attached to the end part of the slideway, and a gap exists between the side wall of the inner core (7) and the side wall of the slideway.
6. The two-way throttle valve of claim 1, wherein: the first elastic component comprises a pressing block (5) positioned in the first cavity (2), a compression spring (6) is arranged between the pressing block (5) and the outer core (15), a first adjusting handle (4) is further arranged on the valve body (1), and the first adjusting handle (4) is in running fit with the valve body (1) and adjusts the distance between the pressing block (5) and the outer core (15).
7. A pantograph air supply control system of integrated two-way choke valve, its characterized in that: the bidirectional throttle valve as claimed in any one of claims 1 to 6 is adopted, wherein a first chamber (2) of the bidirectional throttle valve is communicated with an air pipe of the pantograph, and a second chamber (3) is sequentially communicated with an electromagnetic control valve (17), a pressure reducing valve (16) and an air source.
8. The integrated bi-directional throttle pantograph air supply control system of claim 7, wherein: the electromagnetic control valve (17) adopts a two-position three-way electromagnetic valve.
CN202010611785.1A 2020-06-30 2020-06-30 Bidirectional throttle valve and pantograph air supply control system formed by same Active CN111677879B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010611785.1A CN111677879B (en) 2020-06-30 2020-06-30 Bidirectional throttle valve and pantograph air supply control system formed by same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010611785.1A CN111677879B (en) 2020-06-30 2020-06-30 Bidirectional throttle valve and pantograph air supply control system formed by same

Publications (2)

Publication Number Publication Date
CN111677879A CN111677879A (en) 2020-09-18
CN111677879B true CN111677879B (en) 2024-04-16

Family

ID=72437500

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010611785.1A Active CN111677879B (en) 2020-06-30 2020-06-30 Bidirectional throttle valve and pantograph air supply control system formed by same

Country Status (1)

Country Link
CN (1) CN111677879B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009103285A (en) * 2007-10-25 2009-05-14 Kayaba Ind Co Ltd Damping valve
CN201335573Y (en) * 2008-07-11 2009-10-28 浙江盾安人工环境设备股份有限公司 Short-tube throttle valve used for air conditioner
CN202393115U (en) * 2011-11-28 2012-08-22 宁波奥克斯空调有限公司 Throttling device for air conditioner refrigerating system
CN102927292A (en) * 2012-11-01 2013-02-13 浙江理工大学 Solenoid valve and weft yarn tension device
CN103216662A (en) * 2013-04-01 2013-07-24 河南航天液压气动技术有限公司 Solenoid valve
CN105387261A (en) * 2015-12-10 2016-03-09 西安航天动力研究所 Step-by-step direct-action electromagnetic operating valve with wide working range
CN206449041U (en) * 2017-02-16 2017-08-29 三一石油智能装备有限公司 Throttle unloading valve and throttling Load Relief System
CN110107636A (en) * 2019-04-25 2019-08-09 江苏大学 A kind of two-way magnetorheological damping regulating valve
CN110939781A (en) * 2019-12-10 2020-03-31 新昌县丰亿电器有限公司 Bidirectional throttle valve
CN212338196U (en) * 2020-06-30 2021-01-12 中车资阳机车有限公司 Bidirectional throttle valve and pantograph air supply control system formed by same

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009103285A (en) * 2007-10-25 2009-05-14 Kayaba Ind Co Ltd Damping valve
CN201335573Y (en) * 2008-07-11 2009-10-28 浙江盾安人工环境设备股份有限公司 Short-tube throttle valve used for air conditioner
CN202393115U (en) * 2011-11-28 2012-08-22 宁波奥克斯空调有限公司 Throttling device for air conditioner refrigerating system
CN102927292A (en) * 2012-11-01 2013-02-13 浙江理工大学 Solenoid valve and weft yarn tension device
CN103216662A (en) * 2013-04-01 2013-07-24 河南航天液压气动技术有限公司 Solenoid valve
CN105387261A (en) * 2015-12-10 2016-03-09 西安航天动力研究所 Step-by-step direct-action electromagnetic operating valve with wide working range
CN206449041U (en) * 2017-02-16 2017-08-29 三一石油智能装备有限公司 Throttle unloading valve and throttling Load Relief System
CN110107636A (en) * 2019-04-25 2019-08-09 江苏大学 A kind of two-way magnetorheological damping regulating valve
CN110939781A (en) * 2019-12-10 2020-03-31 新昌县丰亿电器有限公司 Bidirectional throttle valve
CN212338196U (en) * 2020-06-30 2021-01-12 中车资阳机车有限公司 Bidirectional throttle valve and pantograph air supply control system formed by same

Also Published As

Publication number Publication date
CN111677879A (en) 2020-09-18

Similar Documents

Publication Publication Date Title
MX2007004962A (en) Downhole electrical-to-hydraulic conversion module for well completions.
CN103090070A (en) Piloted type pressure reducing valve
CN105952702A (en) Balance valve
CN212338196U (en) Bidirectional throttle valve and pantograph air supply control system formed by same
CN111677879B (en) Bidirectional throttle valve and pantograph air supply control system formed by same
CN101737503B (en) Self-balancing stop valve with piston type valve core and hidden rod
CN101307785B (en) Ultra-high hydraulic lifting valve group for double-acting hydraulic oil cylinder
CN101614282A (en) Differential type pneumatic angle pedestal valve
CN103470846A (en) Singe-acting and double-acting integrated shifting fork pneumatic actuator assembly
CN205371160U (en) Pressure boost overflow valve
CN201650181U (en) Expansion pipe assembly and driving mechanism thereof
CN203477563U (en) Single-dual effect integrated shifting fork pneumatic executor assembly
CN201144905Y (en) Cover board type two-way cartridge inserted valve
CN105422537B (en) Pressure-increasing overflow valve
CN202220898U (en) Hydraulic damping device for valve
CN106939883B (en) Hydraulic grouting pump
CN205136207U (en) A cylinder for third rail pantagraph current collector
CN205136220U (en) Nonoculture is with two piston -cylinder actuating mechanism
CN204113801U (en) A kind of damping device
CN203948648U (en) Duplex channel pressure medium sealing valve unit
CN203067860U (en) Counter-balance valve
CN206874891U (en) A kind of home pipeline multiple exit gas pressure regulating valve
CN201851419U (en) Three-position three-way fast-slow-descending air control reversing limit valve
CN201155496Y (en) Manual integral multitandem valve
CN216518928U (en) Stack formula liquid accuse check valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant