CN107017117B - A kind of pneumatic operation system for motor-car vacuum circuit breaker - Google Patents
A kind of pneumatic operation system for motor-car vacuum circuit breaker Download PDFInfo
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- CN107017117B CN107017117B CN201710343560.0A CN201710343560A CN107017117B CN 107017117 B CN107017117 B CN 107017117B CN 201710343560 A CN201710343560 A CN 201710343560A CN 107017117 B CN107017117 B CN 107017117B
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- 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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a kind of pneumatic operation systems for motor-car vacuum circuit breaker in pneumatic execution field, including main valve, pilot valve and execution cylinder, main valve epicoele is equipped with upper valve core and outer vent, and main valve cavity of resorption is equipped with bottom spool, upper valve core is connected with bottom spool, and main valve cavity of resorption is equipped with reset spring；Pilot valve epicoele is communicated with the atmosphere, pilot valve epicoele is equipped with upper pilot valve, pilot valve epicoele is equipped with movable pressure plate, pilot valve cavity of resorption is equipped with lower pilot valve, upper pilot valve is connected with lower pilot valve, pilot valve lumen is equipped with upper guide's valve seat, and pilot valve lumen is equipped with lower guide's valve seat, intracavitary under pilot valve to be equipped with elastic mechanism；Execution cylinder includes upper chamber of air cylinder and lower chamber of air cylinder, and upper chamber of air cylinder connects atmosphere, and lower chamber of air cylinder connects main valve lumen；Main valve cavity of resorption, pilot valve cavity of resorption are connected with gas source respectively, and main valve epicoele is connected with pilot valve lumen.The present invention passes through gas path controlled vacuum circuit-breaker switching on-off, more energy saving and safe, is easily installed.
Description
Technical field
The invention belongs to Pneumatic actuator technical field, in particular to a kind of pneumatically holding for motor-car vacuum circuit breaker
Luggage is set.
Background technique
There is no special headstock when high-speed rail is run at present to draw entire train groups, but is all installed on each group of train
There is traction electric machine, the traction electric machine by railway contact line on the way to each group of train provides electric energy, corresponding traction electric machine
Entire train groups are driven to run.Electric energy enters the main electronic box of train from railway contact line on the way by the pantograph on train,
Vacuum circuit breaker is installed in main electronic box, for controlling the on-off powered on train.
In the prior art, vacuum circuit breaker is divided into spring operating mechanism and permanent-magnet operating mechanism, and operating mechanism passes through control
The upper and lower contact of vacuum interrupter separates or contact, to control the separating brake and combined floodgate of vacuum circuit breaker.The upper touching of vacuum circuit breaker
Head and immense pressure of the lower contact by spring energy agency, thus huge energy is required when vacuum circuit breaker separating brake, combined floodgate
Amount.In the prior art often with energy storage motor by spring-compressed or stretching, needs when for providing vacuum circuit breaker separating brake, closing a floodgate
Huge energy, disadvantage is that: energy storage motor needs biggish voltage to be driven, not energy saving enough；Energy storage motor
Volume is larger, and the space occupied is excessive, it is difficult to be mounted in the main electronic box of train, installation is not convenient enough.
Summary of the invention
The object of the present invention is to provide a kind of pneumatic operation systems for motor-car vacuum circuit breaker, pass through pilot valve and master
Valve controls the on-off of gas circuit, stretches to control the piston rod of execution cylinder, realizes that control vacuum circuit breaker separating brake closes a floodgate, avoids making
Vacuum circuit breaker is controlled with energy storage motor, with more energy saving on high-speed rail train, whole device is compact-sized, is easily installed and is arranging
Che Shang.
The object of the present invention is achieved like this: a kind of pneumatic operation system for motor-car vacuum circuit breaker, including master
Valve, pilot valve and execution cylinder, are coaxially arranged with main valve epicoele, main valve lumen and main valve cavity of resorption in the valve body of main valve, on main valve
Intracavitary circumferential seal is equipped with upper valve core, offers outer vent on the main valve epicoele side wall below upper valve core, main
It is intracavitary under valve to be equipped with bottom spool, it is connected between upper valve core and bottom spool through the main valve stem across main valve lumen, main valve lumen is suitable for reading
Equipped with upper valve base corresponding with upper valve core, mouth is equipped with lower valve base corresponding with bottom spool under main valve lumen, intracavitary under main valve
Equipped with the reset spring for pushing up against bottom spool；Pilot valve epicoele is coaxially arranged in the valve body of the pilot valve, in pilot valve
Chamber and pilot valve cavity of resorption, the upper opening of pilot valve epicoele are connected to ambient atmosphere, intracavitary on pilot valve to be equipped with upper pilot valve, first
The movable pressure plate that pilot valve can be pushed to move is equipped at the upper opening of pilot valve epicoele, it is intracavitary under pilot valve to be equipped with lower pilot valve
Core, upper pilot valve are connected with lower pilot valve, and pilot valve lumen is suitable for reading to be equipped with upper pilot valve corresponding with upper pilot valve
, mouth is equipped with lower guide's valve seat corresponding with lower pilot valve under pilot valve lumen, and intracavitary be equipped with pushes up against under pilot valve
The elastic mechanism of lower pilot valve；The execution cylinder includes the upper chamber of air cylinder and lower chamber of air cylinder separated via piston, cylinder
Epicoele connects atmosphere, and lower chamber of air cylinder connects main valve lumen；The main valve cavity of resorption, pilot valve cavity of resorption are connected with gas source respectively, described
Main valve epicoele is connected with pilot valve lumen.
When the invention works, movable pressure plate is pressed downward pilot valve, elastic mechanism compression, and upper pilot valve blocks
Guide's valve seat, lower pilot valve are separated with lower guide's valve seat, and valve port is opened on pilot valve, and gas source is ventilated to pilot valve cavity of resorption, gas
Body enters main valve epicoele through pilot valve lumen, and gas push upper valve core moves down, and reset spring compression, upper valve core blocks
Valve seat, bottom spool are separated with lower valve base, and main valve lower valve port is opened, and gas source is ventilated to main valve cavity of resorption, and gas passes through main valve lumen again
Into lower chamber of air cylinder, the piston rod of execution cylinder is protruding, and vacuum circuit breaker closes a floodgate；Movable pressure plate moves down, in elasticity
Under the action of mechanism, upper pilot valve resets, and valve port is opened on pilot valve, and pilot valve lower valve port is closed, intracavitary gas on main valve
Body sequentially enters pilot valve lumen, pilot valve epicoele, and intracavitary gas eventually enters into atmosphere emptying on main valve, and upper valve core is resetting
It is resetted under the action of spring, valve port is opened on main valve, and main valve lower valve port is closed, lower chamber of air cylinder no longer air inlet, the work of execution cylinder
Stopper rod retracts under external loading effect, and the gas in lower chamber of air cylinder is successively pressed into main valve lumen, main valve epicoele by piston, finally
It is emptied by outer vent, vacuum circuit breaker separating brake.
Compared with prior art, the beneficial effects of the present invention are: movable pressure plates to control upper pilot valve and lower pilot valve
Core movement, by the on-off of pilot valve control bound gas circuit, gas source is supplied by main valve to execution cylinder, the piston of execution cylinder
Bar determines that the separating brake of vacuum circuit breaker closes a floodgate, and realizes that the separating brake of pneumatic control vacuum circuit breaker closes a floodgate；The spool of pilot valve is only
Needing the power of very little can be controlled, and avoid controlling vacuum circuit breaker using energy storage motor, and energy storage motor needs when working
Very big voltage, it is not energy saving enough, it is dangerous, vacuum circuit breaker divide-shut brake is controlled by pneumatic operation system, can be high-speed rail
Train energy-saving realizes the speed for further promoting train, and pneumatic control is safer, has ensured the life of numerous passengers on train
Safety.
As a further improvement of the present invention, the pressure being in contact with movable pressure plate is provided at the top of the upper pilot valve
Head, pressure head top are arc, are correspondingly arranged below movable pressure plate cored, and iron core is perpendicular with movable pressure plate, and outer diameter twines
It is wound with electromagnetic coil, movable pressure plate is made of magnetic material.When electromagnetic coil is powered, iron core generates magnetism, by movable pressure plate
It inhales down, movable pressure plate presses down upper pilot valve, and the lower valve port of pilot valve is opened；When electromagnetic coil power loss, iron core is lost
Magnetism, movable pressure plate move up, and upper pilot valve resets, and the lower valve port of pilot valve is closed, and electric current needed for electromagnetic coil is remote
It is more energy saving less than the operating current of energy storage motor；The separating brake combined floodgate by magnet control vacuum circuit breaker is realized, automatically
Change degree is high, easy to control.
As a further improvement of the present invention, the cylinder body of the execution cylinder is set by cylinder, front cover and rear cover composition, piston
Set between the front cover and the rear cover, be upper chamber of air cylinder above piston, be provided with outwardly directed piston rod on piston, after cover axial direction
Offer throttle orifice, throttle orifice is blind hole, after cover it is also radial offer the inlet channel being connected with throttle orifice, inlet channel
Air inlet is connected with main valve lumen, is lower chamber of air cylinder below piston, piston lower portion, which is provided with, to be moved axially in throttle orifice
Restrictor ring, the upper end closed of restrictor ring, lower end is equipped with blow vent, and the side of restrictor ring offers several to be connected with blow vent
Venthole, venthole setting corresponding with throttle orifice, there are throttle clearances between the side and throttle orifice of restrictor ring.Gas from
Air inlet enters inlet channel, enters throttle clearance subsequently into the blow vent of restrictor ring, then from venthole, gas enters rear cover
Slowly piston is pushed to move up behind top, when the venthole top of restrictor ring is moved to above rear cover, the movement speed of piston becomes faster,
Until piston reaches upper vertex；When piston moves down, the movement speed that piston starts is fast, and the venthole lower part of restrictor ring is mobile
When at rear cover, gas is needed through throttle clearance, and the movement speed of piston is slack-off, is moved by design throttle clearance and restrictor ring
Matching relationship between dynamic distance can control the stretching time of piston rod within 120ms, and the retraction time of piston rod is controlled
System realizes that the time for pushing vacuum circuit breaker separating brake to close a floodgate is different within 60ms.
For the ease of adjusting the moving distance of restrictor ring, the lower end of the piston rod extends through piston, and restrictor ring is arranged
On the piston rod, it is threaded with locking nut on piston rod, adjusting gasket is equipped between restrictor ring and locking nut.
In order to enable the structure of pneumatic operation system is more compact, it is mounted in main electronic box and more saves space, the master
Valve is equipped with the first mounting surface and the second mounting surface, is provided with pilot valve on the first mounting surface, is provided with and holds on the second mounting surface
Promoting the circulation of qi cylinder.
As a further improvement of the present invention, the first gas channel being connected with pilot valve lumen is offered on the pilot valve
And the second gas channel being connected with pilot valve cavity of resorption, offer on main valve the third gas channel being connected with main valve epicoele, with it is main
The 5th gas channel the 4th connected gas channel of valve cavity of resorption and be connected with main valve lumen, the first gas channel and third gas channel phase
Connection, the second gas channel are connected with the 4th gas channel, and the 4th gas channel is connected with gas source, the 5th gas channel and lower chamber of air cylinder phase
It connects.Pilot valve lumen is connected with main valve epicoele by the first gas channel and third gas channel, under pilot valve cavity of resorption and main valve
Chamber is connected by the second gas channel, the 4th gas channel, and main valve lumen is connected with lower chamber of air cylinder by the 5th gas channel.Formerly
Gas channel is opened up on pilot valve and main valve, avoids that connecting pipe is arranged between pilot valve and main valve, and structure is more compact, is convenient for
It is installed in main electronic box.
As a further improvement of the present invention, the gas source includes air accumulator, and the gas in air accumulator enters through air supply pipe
In 4th gas channel.Air accumulator is used to storing compressed air, keeps pressure stabilizing to the gas of execution cylinder gas supply, avoids fluctuating, hold
The piston movement of promoting the circulation of qi cylinder is more stable, and the separating brake for accurately controlling vacuum circuit breaker closes a floodgate.
As a further improvement of the present invention, the elastic mechanism includes adjustment seat, between adjustment seat and pilot valve cavity of resorption
Equipped with sealing ring, pilot hole is offered in the middle part of adjustment seat, pressure spring is axially provided in pilot hole, lower pilot valve protrudes into pilot hole
Interior, one end elasticity of pressure spring contradicts on adjusting bolt, and other end elasticity is contradicted in lower pilot valve bottom.Lower pilot valve edge
Pilot hole move up and down, movement it is more steady, by adjust the adjustable pressure spring of bolt compression distance, with movable pressure plate
Extruding force matches, so that pressure spring compresses lower guide's valve seat.
As a further improvement of the present invention, the upper valve core includes the main valve piston to match with main valve epicoele, main valve
Piston base is embedded with blocking.Main valve piston is intracavitary on main valve to be moved up and down, and blocking can block the upper valve port of main valve.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of electromagnet, pilot valve, main valve and execution cylinder.
Fig. 3 is the structural schematic diagram of pilot valve and main valve.
Fig. 4 is the structural schematic diagram of main valve.
Fig. 5 is the structural schematic diagram of pilot valve.
Fig. 6 is the structural schematic diagram of rear cover.
Fig. 7 is the partial structural diagram of execution cylinder.
Fig. 8 is the enlarged drawing in Fig. 7 at A.
Wherein, 1 main valve, 1a main valve epicoele, 1b main valve lumen, 1c main valve cavity of resorption, 2 pilot valves, 2a pilot valve epicoele, 2b are first
Pilot valve lumen, 2c pilot valve cavity of resorption, 3 execution cylinders, 3a upper chamber of air cylinder, 3b lower chamber of air cylinder, 4 upper valve cores, 4a main valve piston, 4b envelope
It fills in, 5 outer vents, 6 bottom spools, 7 main valve stems, 8 upper valve bases, 9 lower valve bases, 10 reset springs, pilot valve on 11,12 can dynamic pressure
Plate, 13 lower pilot valves, guide's valve seat on 14,15 lower guide's valve seats, 16 pressure heads, 17 iron cores, 18 electromagnetic coils, 19 cylinders, 20
Front cover, 21 rear covers, 21a inlet channel, 21b throttle orifice, 22 pistons, 22a piston rod, 23 restrictor rings, 23a blow vent, 23b ventilation
Hole, 24 adjustment gaskets, 25 locking nuts, 26 air accumulators, 27 air supply pipes, 28 adjustment seats, 29 pressure springs, 30 adjust bolt, 31 throttlings
Gap, the first mounting surface of N1, the second mounting surface of N2, the first gas of K1 channel, the second gas of K2 channel, K3 third gas channel, K4 the 4th
Gas channel, the 5th gas channel K5.
Specific embodiment
It is a kind of pneumatic operation system for motor-car vacuum circuit breaker such as Fig. 1-8, including main valve 1, pilot valve 2 and holds
Promoting the circulation of qi cylinder 3, is coaxially arranged with main valve epicoele 1a, main valve lumen 1b and main valve cavity of resorption 1c in the valve body of main valve 1, in main valve epicoele 1a
Circumferential seal is equipped with upper valve core 4, offers outer vent 5 on the main valve epicoele 1a side wall of 4 lower section of upper valve core, main
It is equipped with bottom spool 6 in valve cavity of resorption 1c, is connected between upper valve core 4 and bottom spool 6 through the main valve stem 7 across main valve lumen 1b, main valve
Lumen 1b is suitable for reading to be equipped with upper valve base 8 corresponding with upper valve core 4, under main valve lumen 1b mouth be equipped with it is corresponding with bottom spool 6 under
Valve seat 8, main valve cavity of resorption 1c is interior to be equipped with the reset spring 10 for pushing up against bottom spool 6；Elder generation is coaxially arranged in the valve body of pilot valve 2
Pilot valve epicoele 2a, pilot valve lumen 2b and pilot valve cavity of resorption 2c, the upper opening of pilot valve epicoele 2a are connected to ambient atmosphere, guide
Upper pilot valve 11 is equipped in valve epicoele 2a, the movement of pilot valve 11 can be pushed by being equipped at the upper opening of pilot valve epicoele 2a
Movable pressure plate 12, pilot valve cavity of resorption 2c is interior to be equipped with lower pilot valve 13, and upper pilot valve 11 is connected with lower pilot valve 13, guide
Valve lumen 2b is suitable for reading to be equipped with upper guide's valve seat 14 corresponding with upper pilot valve 11, and mouth is equipped with and lower elder generation under pilot valve lumen 2b
The corresponding lower guide's valve seat 15 of guide valve core 13, pilot valve cavity of resorption 2c is interior to be equipped with the elastic machine for pushing up against lower pilot valve 13
Structure；Execution cylinder 3 includes the upper chamber of air cylinder 3a and lower chamber of air cylinder 3b separated via piston 22, and upper chamber of air cylinder 3a connects atmosphere,
Lower chamber of air cylinder 3b connects main valve lumen 1b；Main valve cavity of resorption 1c, pilot valve cavity of resorption 2c are connected with gas source respectively, main valve epicoele 1a and elder generation
Pilot valve lumen 2b is connected.The pressure head 16 being in contact with movable pressure plate 12 is provided at the top of upper pilot valve 11,16 top of pressure head is
Arc is correspondingly arranged cored 17 below movable pressure plate 12, and iron core 17 and movable pressure plate 12 are perpendicular, and 17 periphery of iron core is wound with
Electromagnetic coil 18, movable pressure plate 12 are made of magnetic material.The cylinder body of execution cylinder 3 is by cylinder 19, front cover 20 and rear cover 21
Composition, piston 22 are arranged between front cover 20 and rear cover 21, are upper chamber of air cylinder 3a above piston 22, are provided on piston 22 outward
The piston rod 22a of stretching, axially offers throttle orifice 21b on rear cover 21, and throttle orifice 21b is blind hole, also radial on rear cover 21 to open
Equipped with the inlet channel 21a being connected with throttle orifice 21b, the air inlet of inlet channel 21a is connected with main valve lumen 1b, piston 22
Lower section is lower chamber of air cylinder 3b, and 22 lower part of piston is provided with the restrictor ring 23 that can be moved axially in throttle orifice 21b, restrictor ring 23
Upper end closed, lower end are equipped with blow vent 23a, and the side of restrictor ring 23 offers several ventholes being connected with blow vent 23a
23b, venthole 23b setting corresponding with throttle orifice 21b, there are throttle clearances between the side and throttle orifice 21b of restrictor ring 23
31.The lower end of piston rod 22a extends through piston 22, and restrictor ring 23 is set on piston rod 22a, and screw thread connects on piston rod 22a
It is connected to locking nut 25, adjusting gasket 24 is equipped between restrictor ring 23 and locking nut 25.Main valve 1 is equipped with the first mounting surface N1
It is provided with pilot valve 2 on the second mounting surface N2, the first mounting surface N1, is provided with execution cylinder 3 on the second mounting surface N2.Guide
The the second gas channel for offering the first gas channel K1 being connected with pilot valve lumen 2b on valve 2 and being connected with pilot valve cavity of resorption 2c
K2, the 4th gas channel K4 for offering the third gas channel K3 being connected with main valve epicoele 1a, being connected with main valve cavity of resorption 1c on main valve 1
And the 5th gas channel K5 being connected with main valve lumen 1b, the first gas channel K1 are connected with third gas channel K3, the second gas is logical
Road K2 and the 4th gas channel K4 are connected, and the 4th gas channel K4 is connected with gas source, and the 5th gas channel K5 connects with lower chamber of air cylinder 3b
It is logical.The gas source includes air accumulator 26, and the gas in air accumulator 26 enters in the 4th gas channel K4 through air supply pipe 27.The elasticity
Mechanism includes adjustment seat 28, and sealing ring is equipped between adjustment seat 28 and pilot valve cavity of resorption 2c, offers guiding in the middle part of adjustment seat 28
Hole is axially provided with pressure spring 29 in pilot hole, and lower pilot valve 13 protrudes into pilot hole, and one end elasticity conflict of pressure spring 29 is being adjusted
It saves on bolt 30, other end elasticity is contradicted in lower 13 bottom of pilot valve.Upper valve core 4 includes the master to match with main valve epicoele 1a
Valve piston 4a, the bottom main valve piston 4a are embedded with blocking 4b.
When work, movable pressure plate 12 is pressed downward pilot valve 11, and pressure spring 29 compresses, and upper pilot valve 11 blocks elder generation
Guide valve seat 14, lower pilot valve 13 are separated with lower guide's valve seat 15, and valve port is opened on pilot valve 2, and air accumulator 26 is through air supply pipe 27
Into the 4th gas channel K4, then through the second gas channel K2, pilot valve cavity of resorption 2c, pilot valve lumen 2b, the first gas channel K1, third
Gas channel K3 enters main valve epicoele 1a, and gas push upper valve core 4 moves down, and reset spring 10 compresses, and blocking 4b is blocked
Valve seat 8, bottom spool 6 are separated with lower valve base 9,1 lower valve port of main valve open, air accumulator 26 through air supply pipe 27, the 4th gas channel K4 to
Main valve cavity of resorption 1c ventilation, gas pass through main valve lumen 1b, the 5th gas channel K5, inlet channel 21a again and enter lower chamber of air cylinder 3b, holds
The piston rod 22a of promoting the circulation of qi cylinder 3 is protruding, and vacuum circuit breaker closes a floodgate；Movable pressure plate 12 moves down, in the effect of pressure spring 29
Under, upper pilot valve 11 resets, and valve port is opened on pilot valve 2, and 2 lower valve port of pilot valve is closed, and the gas in main valve epicoele 1a is logical
Cross third gas channel K5, the first gas channel K1 enters pilot valve lumen 2b, pilot valve epicoele 2a, the gas in main valve epicoele 1a is most
Enter atmosphere eventually to empty, upper valve core 4 resets under the action of reset spring 10, and valve port is opened on main valve 1, and 1 lower valve port of main valve closes
It closes, lower chamber of air cylinder 3b no longer air inlet, the piston rod 22a of execution cylinder 3 is retracted under external loading effect, and piston 22 will be under cylinder
Gas in chamber 3b is pressed into main valve lumen 1b through inlet channel 21a, the 5th gas channel K5, eventually by the outlet of main valve epicoele 1a
Stomata 7 empties, vacuum circuit breaker separating brake.
Advantage of this system is that: electromagnet 12 controls upper pilot valve 11 and the movement of lower pilot valve 13, passes through guide
The on-off of 2 control bound of valve, 1 gas circuit, air accumulator 26 are supplied by main valve 1 to execution cylinder 3, the piston rod 22a of execution cylinder 3
It determines that the separating brake of vacuum circuit breaker closes a floodgate, realizes that the separating brake of pneumatic control vacuum circuit breaker closes a floodgate；The spool of pilot valve 2 only needs
The power of very little can be controlled, and avoid controlling vacuum circuit breaker using energy storage motor, be needed very when energy storage motor works
Big voltage, it is not energy saving enough, it is dangerous, vacuum circuit breaker divide-shut brake is controlled by pneumatic operation system, can be arranged for high-speed rail
The speed for further promoting train is realized in vehicle energy conservation, and pneumatic control is safer, has ensured the life peace of numerous passengers on train
Entirely, electromagnet, pilot valve 2 and main valve 1 are mounted on inside main electronic box, air accumulator 26 is mounted on outside main electronic box, is easily installed, and is saved
Save space.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (9)
1. a kind of pneumatic operation system for motor-car vacuum circuit breaker, which is characterized in that including main valve, pilot valve and execute gas
Cylinder, main valve epicoele, main valve lumen and main valve cavity of resorption are coaxially arranged in the valve body of main valve, and the sealing cooperation of main valve epicoele inner circumferential is set
It is equipped with upper valve core, offers outer vent on the main valve epicoele side wall below upper valve core, it is intracavitary under main valve to be equipped with bottom spool,
It is connected between upper valve core and bottom spool through the main valve stem across main valve lumen, main valve lumen is suitable for reading equipped with corresponding with upper valve core
Upper valve base, mouth is equipped with lower valve base corresponding with bottom spool under main valve lumen, and intracavitary be equipped with pushes up against bottom spool under main valve
Reset spring；Pilot valve epicoele, pilot valve lumen and pilot valve cavity of resorption, pilot valve are coaxially arranged in the valve body of the pilot valve
The upper opening of epicoele is connected to ambient atmosphere, intracavitary on pilot valve to be equipped with upper pilot valve, is set at the upper opening of pilot valve epicoele
There is the movable pressure plate that pilot valve can be pushed to move, it is intracavitary under pilot valve to be equipped with lower pilot valve, upper pilot valve and lower elder generation
Guide valve core is connected, and pilot valve lumen is suitable for reading to be equipped with upper guide's valve seat corresponding with upper pilot valve, and mouth is set under pilot valve lumen
There is lower guide's valve seat corresponding with lower pilot valve, it is intracavitary under pilot valve to be equipped with the elastic machine for pushing up against lower pilot valve
Structure；The execution cylinder includes the upper chamber of air cylinder and lower chamber of air cylinder separated via piston, and upper chamber of air cylinder connects atmosphere, under cylinder
Chamber connects main valve lumen；The main valve cavity of resorption, pilot valve cavity of resorption are connected with gas source respectively, the main valve epicoele and pilot valve lumen
It is connected.
2. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 1, which is characterized in that described
The pressure head being in contact with movable pressure plate is provided at the top of upper pilot valve, pressure head top is arc, and correspondence is set below movable pressure plate
It is equipped with iron core, iron core is perpendicular with movable pressure plate, and outer diameter is wound with electromagnetic coil, and movable pressure plate uses magnetic material system
At.
3. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 1 or 2, which is characterized in that
The cylinder body of the execution cylinder is arranged between the front cover and the rear cover by cylinder, front cover and rear cover composition, piston, is gas above piston
Cylinder epicoele is provided with outwardly directed piston rod on piston, after cover it is axial offer throttle orifice, throttle orifice is blind hole, rear cover
Upper also radial direction offers the inlet channel being connected with throttle orifice, and the air inlet of inlet channel is connected with main valve lumen, under piston
Side is lower chamber of air cylinder, and piston lower portion is provided with the restrictor ring that can be moved axially in throttle orifice, the upper end closed of restrictor ring, lower end
Equipped with blow vent, the side of restrictor ring offers several ventholes being connected with blow vent, and venthole is corresponding with throttle orifice
Setting, there are throttle clearances between the side and throttle orifice of restrictor ring.
4. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 3, which is characterized in that described
The lower end of piston rod extends through piston, and restrictor ring is arranged on the piston rod, and locking nut is threaded on piston rod, throttling
Adjusting gasket is equipped between ring and locking nut.
5. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 1 or 2, which is characterized in that
The main valve is equipped with the first mounting surface and the second mounting surface, is provided with pilot valve on the first mounting surface, sets on the second mounting surface
It is equipped with execution cylinder.
6. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 5, which is characterized in that described
The first gas channel being connected with pilot valve lumen and the second gas channel being connected with pilot valve cavity of resorption are offered on pilot valve, it is main
Offered on valve the third gas channel being connected with main valve epicoele, the 4th gas channel being connected with main valve cavity of resorption and with main valve lumen
The 5th connected gas channel, the first gas channel are connected with third gas channel, and the second gas channel is connected with the 4th gas channel, the
Four gas channels are connected with gas source, and the 5th gas channel is connected with lower chamber of air cylinder.
7. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 6, which is characterized in that described
Gas source includes air accumulator, and the gas in air accumulator enters in the 4th gas channel through air supply pipe.
8. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 1 or 2, which is characterized in that
The elastic mechanism includes adjustment seat, and sealing ring is equipped between adjustment seat and pilot valve cavity of resorption, offers guiding in the middle part of adjustment seat
Hole is axially provided with pressure spring in pilot hole, and lower pilot valve protrudes into pilot hole, and one end elasticity of pressure spring, which contradicts, is adjusting bolt
On, other end elasticity is contradicted in lower pilot valve bottom.
9. a kind of pneumatic operation system for motor-car vacuum circuit breaker according to claim 1 or 2, which is characterized in that
The upper valve core includes the main valve piston to match with main valve epicoele, and main valve piston bottom is embedded with blocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343560.0A CN107017117B (en) | 2017-05-16 | 2017-05-16 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343560.0A CN107017117B (en) | 2017-05-16 | 2017-05-16 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
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| Publication Number | Publication Date |
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| CN107017117A CN107017117A (en) | 2017-08-04 |
| CN107017117B true CN107017117B (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710343560.0A Active CN107017117B (en) | 2017-05-16 | 2017-05-16 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
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| CN112610724A (en) * | 2020-12-23 | 2021-04-06 | 北京中车赛德铁道电气科技有限公司 | Pneumatic active-break change-over valve |
| CN114413026A (en) * | 2021-12-22 | 2022-04-29 | 北京中车赛德铁道电气科技有限公司 | Pneumatic main power-off solenoid valve |
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| CN102758921A (en) * | 2012-07-30 | 2012-10-31 | 四川海川消防设备有限公司 | Pilot type electromagnetic switch gas valve |
| CN103496190A (en) * | 2013-09-29 | 2014-01-08 | 无锡市拓发自控设备有限公司 | Safety dual electromagnetic valve for mechanical press |
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| DE2705914C2 (en) * | 1977-02-09 | 1982-06-16 | Siemens AG, 1000 Berlin und 8000 München | Reversing valve |
| CN1023923C (en) * | 1990-09-24 | 1994-03-02 | 王勇维 | Operating mechanism for pneumatic switch |
| CN1026536C (en) * | 1992-04-08 | 1994-11-09 | 王勇维 | Structure of pneumatic system of breaker |
| FR2768855B1 (en) * | 1997-09-25 | 1999-11-12 | Gec Alsthom T & D Sa | CONTROL FOR ELECTRICAL APPARATUS, FOR EXAMPLE HIGH VOLTAGE CIRCUIT BREAKER |
| JP3348013B2 (en) * | 1998-03-31 | 2002-11-20 | 株式会社日立製作所 | Circuit breaker fluid drive |
| CN204851819U (en) * | 2015-06-30 | 2015-12-09 | 河南平高电气股份有限公司 | Control valve and use circuit breaker hydraulic pressure operating mechanism of this control valve |
| CN205605521U (en) * | 2016-03-21 | 2016-09-28 | 河南平高电气股份有限公司 | Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof |
| CN206774449U (en) * | 2017-05-16 | 2017-12-19 | 无锡市华通气动制造有限公司 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102758921A (en) * | 2012-07-30 | 2012-10-31 | 四川海川消防设备有限公司 | Pilot type electromagnetic switch gas valve |
| CN103496190A (en) * | 2013-09-29 | 2014-01-08 | 无锡市拓发自控设备有限公司 | Safety dual electromagnetic valve for mechanical press |
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| CN107017117A (en) | 2017-08-04 |
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