CN110966429A - High-speed two-position three-way hydraulic valve - Google Patents
High-speed two-position three-way hydraulic valve Download PDFInfo
- Publication number
- CN110966429A CN110966429A CN201911401957.6A CN201911401957A CN110966429A CN 110966429 A CN110966429 A CN 110966429A CN 201911401957 A CN201911401957 A CN 201911401957A CN 110966429 A CN110966429 A CN 110966429A
- Authority
- CN
- China
- Prior art keywords
- oil
- main valve
- pilot
- valve body
- valve
- 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.)
- Pending
Links
Images
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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
-
- 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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot 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
- 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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
- F15B13/0435—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being sliding valves
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means
-
- 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
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
Abstract
The invention belongs to the technical field of hydraulic operating mechanisms of high-voltage circuit breakers, and relates to a high-speed two-position three-way valve, which comprises a main valve body and a pilot valve body, wherein the main valve body and the pilot valve body are mutually matched and connected; the main valve body is internally provided with a main valve core in a sliding fit manner, the limit position of the axial movement of the main valve core is limited by a cone valve, the two axial ends of the main valve body are respectively provided with an external cone part, and the external cone parts are correspondingly matched with the internal cone parts respectively arranged at the two axial ends of the inner cavity of the main valve body; the main valve core is of a hollow structure, a pilot valve is installed at the end part, close to an oil inlet, of one side of the main valve core, a damping oil through hole is formed between a working oil port of the main valve core and a control oil cavity of the pilot valve, an oil inlet and an oil return port which are communicated with a hollow cavity of the main valve core are further formed in the main valve body, a working oil port is formed in the axial outer end of the main valve body, and the working oil port is communicated with the hollow cavity of. The two-position three-way valve can meet various working requirements of the hydraulic operating mechanism of the circuit breaker.
Description
Technical Field
The invention belongs to the technical field of hydraulic operating mechanisms of high-voltage circuit breakers, and relates to a high-speed two-position three-way valve.
Background
A sulfur hexafluoride high-voltage circuit breaker is commonly used in a high-voltage power transmission system to switch on and off a loaded power transmission line. The contact sealed in sulfur hexafluoride gas needs an operating mechanism moving at high speed to control the opening and closing of the contact, and the response of a hydraulic transmission mode is very quick, which is undoubtedly the best choice of the operating mechanism. Because the speed of the contact is extremely high when the contact is switched on and switched off, particularly during the opening operation, the contact must be separated by the operating mechanism within about 20ms, and therefore the instantaneous flow rate of the fluid in the hydraulic operating mechanism is extremely high.
Because the high-voltage circuit breaker does not work frequently, in order to reduce energy consumption, when not working at ordinary times, the pressure oil stored in the energy accumulator is hoped not to leak as much as possible.
In order to ensure the safety of the high-voltage circuit breaker, the opening state or the closing state of the high-voltage circuit breaker needs to be stable and reliable, and even if the high-voltage circuit breaker is in a power failure state or a voltage failure state, the operating mechanism can still reliably keep the opening state or the closing state.
High speed, large flow, no leakage and bistable state are the requirements of the hydraulic operating mechanism on the control valve.
Disclosure of Invention
The invention aims at the problems and provides a high-speed two-position three-way valve which can meet various working requirements of a hydraulic operating mechanism of a circuit breaker.
According to the technical scheme of the invention: the utility model provides a high-speed two three-way valve which characterized in that: the high-speed leakage-free pilot electromagnetic valve comprises a main valve body, a pilot valve body and a high-speed leakage-free pilot electromagnetic valve, wherein the main valve body and the pilot valve body are mutually matched and connected;
the main valve body is internally provided with a main valve core of a hollow structure in a sliding fit manner, one axial end of the main valve core and the axial end part corresponding to the main valve body form an oil inlet cone valve, and the other axial end of the main valve core and the axial end part corresponding to the main valve body form an oil return cone valve;
the main valve body is provided with an oil inlet, an oil return port and a working oil port, and the oil inlet cone valve and the oil return cone valve are used for communicating the oil inlet or the oil outlet with the working oil port.
The axial two ends of the main valve core are respectively provided with an outer cone part, the axial two ends of the main valve body are respectively provided with an inner cone part, the inner cone part at one axial end of the main valve body and the outer cone part at the same axial end of the main valve core form an oil inlet cone valve, and the inner cone part at the other axial end of the main valve body and the outer cone part at the same axial end of the main valve core form an oil return cone valve.
The pilot valve is arranged at the end part of one side, close to the oil inlet, of the main valve core, a damping oil through hole is formed between a working oil port of the main valve core and a control oil cavity of the pilot valve, the pilot valve core extends into an inner hole of the pilot valve body and is connected with the main valve core, and a control oil port is formed in the pilot valve body and is communicated with the control oil cavity of the pilot valve body.
The inner wall of the main valve body is provided with a first bulge and a second bulge, the outer surface of the main valve core is provided with a boss, the boss is arranged between the first bulge and the second bulge, a first oil cavity and a second oil cavity are formed between the boss and the bulges, the first oil cavity is communicated with the oil inlet, and the second oil cavity is communicated with the oil return port.
The pilot valve body is further provided with a damping hole, and the damping hole is communicated with the working oil port and the control oil port.
The hole of guide's valve body is equipped with the mounting groove, spring positioning device set up in the mounting groove, the surface of pilot valve is provided with a recess, and the recess cooperatees with spring positioning device for under the decompression state, the pilot valve still can be in separating brake or the position of closing, sets up the sealing washer in the one side that is close to main valve core, the sealing washer is sealed with the hole of guide's valve body and is cooperated.
The high-speed leakage-free electromagnetic valve further comprises an opening pilot electromagnetic valve and a closing pilot electromagnetic valve, oil outlets of the opening pilot electromagnetic valve and the closing pilot electromagnetic valve are respectively communicated with a pilot valve control oil port, an oil inlet of the opening pilot electromagnetic valve is communicated with an oil return port, and an oil inlet of the closing pilot electromagnetic valve is communicated with an oil inlet.
The invention has the technical effects that: the two-position three-way valve can perfectly meet various working requirements of the hydraulic operating mechanism of the circuit breaker, has no leakage when not working, can ensure safe and reliable opening and closing operation of the high-voltage circuit breaker when working, has stable and reliable opening state or closing state, and can still reliably keep the opening state or closing state even in the power-off and voltage-loss states.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the present invention.
Fig. 2 is a schematic diagram of a closing state of the present invention.
FIG. 3 is a schematic diagram of the opening state of the present invention.
Fig. 4 is a schematic view of the working state of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the drawings 1-4, the hydraulic control valve comprises a main valve core 1, an oil through hole 1-1, a boss 1-2, a main valve body 2, a first protrusion 2-1, a second protrusion 2-2, a first oil cavity 2-3, a second oil cavity 2-4, a pilot valve 3, a groove 3-1, a pilot valve body 4, a damping hole 5, a spring positioning device 6, a separating pilot electromagnetic valve 7, an oil way 8, a closing pilot electromagnetic valve 9, a single-action operating oil cylinder 10, an energy accumulator 11, a one-way valve 12, a high-pressure pump 13 and the like.
As shown in fig. 1 to 4, the invention relates to a high-speed two-position three-way valve, which comprises a main valve body 2, a pilot valve body 4 and a high-speed non-leakage pilot electromagnetic valve integrated on the pilot valve body, wherein the main valve body and the pilot valve body are mutually matched and connected;
the main valve body 2 is internally provided with a main valve core 1 in a sliding fit manner, the main valve core 1 is of a hollow structure, one axial end of the main valve core 1 and the corresponding axial end of the main valve body 2 form an oil inlet cone valve, and the other axial end of the main valve core 1 and the corresponding axial end of the main valve body 2 form an oil return cone valve;
the main valve body 2 is provided with an oil inlet P, an oil return port T and a working oil port A, and the oil inlet conical valve and the oil return conical valve are used for communicating the oil inlet P or the oil outlet T with the working oil port A.
The axial two ends of the main valve element 1 are respectively provided with an outer cone part, the axial two ends of the main valve element 2 are respectively provided with an inner cone part, the inner cone part at one axial end of the main valve element 2 and the outer cone part at the same axial end of the main valve element 1 form an oil inlet cone valve, and the inner cone part at the other axial end of the main valve element 2 and the outer cone part at the same axial end of the main valve element 1 form an oil return cone valve.
The end part of one side, close to the oil inlet P, of the main valve core 1 is provided with a pilot valve 3, a damping oil through hole 1-1 is arranged between a working oil port A of the main valve core 1 and a control oil cavity of the pilot valve 3, the pilot valve core 3 extends into an inner hole of a pilot valve body 4 and is connected with the main valve core 1, and the pilot valve body 4 is provided with a control oil port C to be communicated with the control oil cavity of the pilot valve body 4.
The inner wall of the main valve body 2 is provided with a first bulge 2-1 and a second bulge 2-2, the outer surface of the main valve core 1 is provided with a boss 1-2, the boss 1-2 is arranged between the first bulge 2-1 and the second bulge 2-2, a first oil cavity 2-3 and a second oil cavity 2-4 are formed between the boss and the bulges, the first oil cavity 2-3 is communicated with an oil inlet P, and the second oil cavity 2-4 is communicated with an oil return port T.
The pilot valve body 4 is further provided with a damping hole 5, and the damping hole 5 is communicated with the working oil port A and the control oil port C.
The inner hole of the pilot valve body 4 is provided with a mounting groove, the spring positioning device 6 is arranged in the mounting groove, the surface of the pilot valve 3 is provided with a groove 3-3, the groove 3-3 is matched with the spring positioning device 6, the pilot valve 3 can still be in a brake opening or brake closing position under the decompression state, a sealing ring is arranged on one side close to the main valve element 1, and the sealing ring is in sealing fit with the inner hole of the pilot valve body 4.
The high-speed leakage-free electromagnetic valve further comprises an opening pilot electromagnetic valve 7 and a closing pilot electromagnetic valve 9, oil outlets of the opening pilot electromagnetic valve 7 and the closing pilot electromagnetic valve 9 are respectively communicated with the control oil port C, an oil inlet of the opening pilot electromagnetic valve 7 is communicated with the oil return port T, and an oil inlet of the closing pilot electromagnetic valve 9 is communicated with the oil inlet P.
The working principle of the product of the invention is as follows: the three-way valve is provided with an oil inlet P, an oil return port T, a working oil port A and a control oil port C, as shown in figure 1, a hollow main valve core 1 is arranged in a valve body 2, two ends of the hollow main valve core 1 are of a non-leakage cone valve structure, a boss 1-2 is arranged in the middle of the valve core 1, and the pressure area of the boss 1-2 is a1And is connected with an oil inlet P, and the main valve core always receives the force towards the direction of the pilot valve 3. Control oil chamber pressure receiving area a of pilot valve 32Wherein a is2=2a1. Pilot valve 3 notWhen the force is applied, the main valve core 1 moves towards the pilot valve direction, and the passage of the oil inlet P and the working oil port A is closed, so that the working oil port A is communicated with the oil return port T. When the pilot valve 3 is stressed, the pilot valve 3 overcomes the acting force borne by the main valve core 1, and pushes the main valve core 1 to move in the opposite direction, so that the oil inlet P is communicated with the working oil port A, and the passage of the working oil port A and the oil return port T is closed;
a pilot valve 3 is connected to a main valve 1, the pilot valve 3 slides in a pilot valve body 4, and an opening pilot electromagnetic valve 7, an oil path 8 and a closing pilot electromagnetic valve 9 which are integrated on the pilot valve 3 form an external control oil path.
The closing state is shown in fig. 2: when the closing pilot electromagnetic valve 7 is powered on, the control oil port C is communicated with the oil inlet P, the thrust of the pilot valve 3 overcomes the thrust of the main valve core 1 and moves towards the closing direction together with the main valve core 1, the passage of the working oil port A and the oil return port T is closed, and pressure oil is communicated with the working oil port A through the oil inlet P and the hollow main valve core 1.
The open state is shown in fig. 3: when the opening pilot electromagnetic valve 7 is powered on, the control oil port C is communicated with the oil return port T, the main valve 1 and the pilot valve 3 move towards the opening direction under the action force of the main valve 1, the working oil port A and the oil return port T are communicated, and the oil inlet P and the working oil port A are closed.
The damping hole 5 communicates the oil pressure of the working oil port A to the control oil cavity of the pilot valve body 4 in the closing state to form positive feedback, and even if the closing pilot solenoid valve 9 of the control oil port C loses power and the control oil pressure disappears, as long as the control oil port C is still in the closing state, the position of the main valve core 1 cannot move and is in a stable closing state, and similarly, the main valve core 1 is in the opening state and can also keep a stable opening state by the damping hole 5.
The pilot valve is also provided with a mechanical spring positioning device 6, even if the external oil pressure P is completely interrupted, the position of the valve core cannot be changed by the spring positioning device 6, and the state of the valve core can be changed only by the oil pressure pulse of the control oil port C. The mechanical spring positioning device 6 is a cylindrical helical spring and is arranged in a groove of the pilot valve body 4.
The specific application scheme of the product in the hydraulic operating mechanism is shown in fig. 4, the working oil port a is connected with a single-action operating oil cylinder 10 of the operating mechanism, and a piston rod of the single-action operating oil cylinder 10 is connected with an electrical contact of a high-voltage switch. A high-pressure oil pump inputs oil into the energy accumulator 11, the high-pressure hydraulic oil stored in the energy accumulator 11 is enough to make the single-acting oil cylinder of the operating mechanism reciprocate more than one time, when the control valve is static, because the sealing surface of the cone valve has no leakage, the high-pressure hydraulic oil stored in the energy accumulator does not generate loss, when the pilot valve is controlled to be opened and closed by an external instruction, the high-pressure oil stored in the energy accumulator rapidly flushes into the oil cylinder, so that the contacts of the electric appliance are separated and combined at high speed.
When the closing pilot electromagnetic valve 9 is switched on, pressure oil stored in the energy accumulator enters the pilot valve body 4 through the closing pilot electromagnetic valve 9 to push the pilot valve 3 and the main valve core 1 to enter a closing state, high-pressure oil stored in the energy accumulator rapidly rushes into the operating oil cylinder through the hollow main valve core 1 to push the piston rod of the oil cylinder to rapidly extend out, and an electrical contact connected with the piston rod is switched on. Because the damping hole 5 in the pilot valve body 4 connects the control oil port C with the working oil port A, even if the closing pilot electromagnetic valve 9 loses power, the operating oil cylinder can still be reliably kept in a closing state.
When the operating mechanism in a closing state is switched on, as long as the opening pilot electromagnetic valve 7 is switched on, the oil pressure in the pilot valve body 4 can be unloaded into the oil tank through the opening pilot electromagnetic valve 7, the pilot valve core 3 is pushed to an opening oil return state by the main valve core 1, so that the working oil port A is communicated with the oil return port T, and the oil in the rodless cavity of the operating oil cylinder is rapidly discharged into the oil tank, so that the piston rod retracts at the highest speed, and the high-speed breaking of the electrical contact is realized. Because the damping hole 5 in the pilot valve body 4 communicates the control oil port C with the working oil port A, even if the opening pilot electromagnetic valve 7 is de-energized, the single-action operating oil cylinder 10 can still be reliably kept in the opening state.
Claims (7)
1. The utility model provides a high-speed two three-way valve which characterized in that: the high-speed leakage-free pilot electromagnetic valve comprises a main valve body (2), a pilot valve body (4) and a high-speed leakage-free pilot electromagnetic valve, wherein the main valve body and the pilot valve body are mutually matched and connected;
the main valve body (2) is internally provided with a main valve core (1) in a hollow structure in a sliding fit mode, one axial end of the main valve core (1) and the axial end part corresponding to the main valve body (2) form an oil inlet cone valve, and the other axial end of the main valve core (1) and the axial end part corresponding to the main valve body (2) form an oil return cone valve;
the main valve body (2) is provided with an oil inlet (P), an oil return port (T) and a working oil port (A), and the oil inlet cone valve and the oil return cone valve are used for communicating the oil inlet (P) or the oil outlet (T) with the working oil port (A).
2. A high speed two position three way valve according to claim 1 wherein: the axial both ends of main valve core (1) are provided with outer pyramis respectively, and the axial both ends of the main valve body (2) set up interior pyramis respectively, and the interior pyramis of main valve body (2) axial one end constitutes the oil feed cone valve with the outer pyramis of the same end of main valve core (1) axial, and the interior pyramis of the main valve body (2) axial other end constitutes the oil return cone valve with the outer pyramis of the same end of main valve core (1) axial.
3. A high speed two position three way valve according to claim 1 wherein: the hydraulic control valve is characterized in that a pilot valve (3) is installed at the end part of one side, close to an oil inlet (P), of the main valve core (1), a damping oil through hole 1-1 is formed between a working oil port A of the main valve core 1 and a control oil cavity of the pilot valve 3, the pilot valve core (3) extends into an inner hole of the pilot valve body (4) and is connected with the main valve core (1), and a control oil port (C) is formed in the pilot valve body (4) and is communicated with the control oil cavity of the pilot valve body (4).
4. A high speed two position three way valve according to claim 1 wherein: the inner wall of the main valve body (2) is provided with a first bulge (2-1) and a second bulge (2-2), and the outside of the main valve core (1)
The surface of the oil inlet is provided with a boss (1-2), the boss (1-2) is arranged between the first protrusion (2-1) and the second protrusion (2-2), a first oil cavity (2-3) and a second oil cavity (2-4) are formed between the boss and the protrusions, the first oil cavity (2-3) is communicated with the oil inlet (P), and the second oil cavity (2-4) is communicated with the oil return port (T).
5. A high speed two position three way valve according to claim 1 wherein: the pilot valve body (4) is further provided with a damping hole (5), and the damping hole (5) is communicated with the working oil port (A) and the control oil port (C).
6. A high speed two position three way valve according to claim 1 wherein: the inner hole of the pilot valve body (4) is provided with a mounting groove, the spring positioning device (6) is arranged in the mounting groove, a groove (3-3) is formed in the surface of the pilot valve (3), the groove (3-3) is matched with the spring positioning device (6), the pilot valve (3) can still be in a brake opening or brake closing position under a decompression state, a sealing ring is arranged on one side close to the main valve core (1), and the sealing ring is in sealing fit with the inner hole of the pilot valve body (4).
7. A high speed two position three way valve according to claim 1 wherein: the high-speed leakage-free electromagnetic valve comprises an opening pilot electromagnetic valve (7) and a closing pilot electromagnetic valve (9), oil outlets of the opening pilot electromagnetic valve (7) and the closing pilot electromagnetic valve (9) are respectively communicated with a control oil port (C), an oil inlet of the opening pilot electromagnetic valve (7) is communicated with an oil return port (T), and an oil inlet of the closing pilot electromagnetic valve (9) is communicated with an oil inlet (P).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401957.6A CN110966429A (en) | 2019-12-31 | 2019-12-31 | High-speed two-position three-way hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401957.6A CN110966429A (en) | 2019-12-31 | 2019-12-31 | High-speed two-position three-way hydraulic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110966429A true CN110966429A (en) | 2020-04-07 |
Family
ID=70037471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911401957.6A Pending CN110966429A (en) | 2019-12-31 | 2019-12-31 | High-speed two-position three-way hydraulic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110966429A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820577A (en) * | 2020-12-30 | 2021-05-18 | 南方电网科学研究院有限责任公司 | Operating mechanism and circuit breaker for quickly cutting off circuit |
-
2019
- 2019-12-31 CN CN201911401957.6A patent/CN110966429A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820577A (en) * | 2020-12-30 | 2021-05-18 | 南方电网科学研究院有限责任公司 | Operating mechanism and circuit breaker for quickly cutting off circuit |
| CN112820577B (en) * | 2020-12-30 | 2024-01-26 | 南方电网科学研究院有限责任公司 | Operating mechanism for quick circuit breaking and circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8910660B2 (en) | Valve arrangement | |
| CN108458151B (en) | Self-sealing type double-redundancy two-position three-way electromagnetic valve | |
| CN110966429A (en) | High-speed two-position three-way hydraulic valve | |
| CN112503044B (en) | Hydraulic control valve and hydraulic operating mechanism | |
| CN212718161U (en) | High-speed two-position three-way hydraulic valve | |
| CN102221023A (en) | Guide normally-closed type hydraulic electromagnetic valve | |
| CN112178006B (en) | Automatic reversing hydraulic cylinder | |
| CN108368860A (en) | Valve gear | |
| CN110131433B (en) | Switching valve capable of increasing response time | |
| CN111059096A (en) | Hydraulic centering locking actuating cylinder structure | |
| CN109372812A (en) | A kind of damping guide's valve pocket control formula switch valve | |
| CN202360807U (en) | Reversing valve structure | |
| CN205036666U (en) | Hydraulic pressure keeps electro -hydraulic reversing valve of valve position | |
| CN111188801B (en) | Two-position six-way hydraulic control reversing valve | |
| CN212225645U (en) | Pneumatic control type oil pressure valve | |
| CN204361027U (en) | For the hydraulic electromagnetic changement of primary cut-out hydraulic spring grease cup powder operation device | |
| CN217713656U (en) | Knife switch type normal low temperature zero leakage electromagnetic valve | |
| CN109296575A (en) | A kind of pilot control formula switch valve | |
| CN213236189U (en) | High-response two-way cartridge valve | |
| CN112289599B (en) | Control valve, hydraulic operating mechanism and circuit breaker | |
| CN115306939A (en) | Gas switch electromagnetic valve driven by electromagnetic coil and used by vacuum system | |
| CN214368089U (en) | Electromagnetic valve with manual emergency switch | |
| CN218582260U (en) | Novel electronic expansion valve | |
| CN218062899U (en) | Hydraulic cylinder capable of quickly starting return stroke | |
| CN219221420U (en) | Switch solenoid 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 |