CN105374615B - A kind of phase selecting switching-on apparatus of high-voltage great-current - Google Patents
A kind of phase selecting switching-on apparatus of high-voltage great-current Download PDFInfo
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- CN105374615B CN105374615B CN201510908163.4A CN201510908163A CN105374615B CN 105374615 B CN105374615 B CN 105374615B CN 201510908163 A CN201510908163 A CN 201510908163A CN 105374615 B CN105374615 B CN 105374615B
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- contact
- static contact
- thyratron
- insulating cylinder
- moving contact
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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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
-
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
Abstract
A kind of phase selecting switching-on apparatus of high-voltage great-current of the present invention, including operating mechanism, arc-chutes and control loop；Arc-chutes include the insulating cylinder that sealing is set, and the moving contact and static contact being arranged in insulating cylinder that cooperate；Static contact includes the first static contact and the second static contact for connecting inlet-outlet line respectively；First static contact and the second static contact are separately fixed at the two ends of insulating cylinder；Moving contact slides with the second static contact electrically connect all the time, and completes breaking-closing operating by the separation with the first static contact and electrical contact；Charged air pressure in insulating cylinder；The output end of operating mechanism is connected with moving contact, and control loop is used for the action for controlling operating mechanism.Arc-chutes in the present invention are insulated by using pressure-air, will be opened between contact away from diminution, so as to adapt to required its class of insulation of raising of high-voltage field, reduction is opened away from so as to ensure that its rapid closing is acted；Intrinsic closing time is stabilized, combined floodgate reliability is added.
Description
Technical field
The present invention relates to option closing device, specially a kind of phase selecting switching-on apparatus of high-voltage great-current.
Background technology
In High-Voltage Electrical Appliances high power laboratory place, the regular event connection that each in the success or not of experiment and loop is switched
System is abnormal close, and switch must successively be acted according to setting time, and acts in place, just can guarantee that each test parameters, otherwise
The probability of invalid experiment can greatly be increased.In some type approval tests, such as T100a, the mode 1 of fuse, 2 and of breaker
3, transformer sudden short circuit experiment etc. requires very high, it is necessary to which laboratory's establishing criteria artificially creates most harsh to closing phase angle
Transient process examine test product, at this moment will use phase selection switch technology.General use 2 to 3 is single-phase in laboratory opens
Close dedicated for phase selection, matched somebody with somebody using high-power control loop and the thrust electromagnetic mechanism of quick acting based on hydrogen thyratron
Close and thread off, so as to realize rapid closing.Conventional phase selection switch can only accomplish the low-voltage and high-current of KV level, Zhi Nengying
Experiment for low-voltage electrical apparatus.The present invention can reach 12kV, 330kA, can be widely applied to the examination of 12kV generator system
Test in station.
The latter stage eighties, Shanghai Electric Appliances Science Inst invention 1650V Large Copacity phase selecting switching-on apparatus by identification,
Just rarely has the message of such product afterwards, phase selection conjunction is now served as with single-phase vacuum circuit breaker or SF6 breakers by major experiment stations
Lock is switched.Product typically uses air insulation before, to ensure closing speed so opening away from can not be excessive, so as to have impact on product
Voltage class, operating mechanism uses thrust electromagnetic mechanism for tripping mechanism, provides higher by intrinsic cluster spring
Closing speed, the bounce of closing switch is prevented using oil bumper and cushion pad, increases the life-span of switch.
In control loop based on the control loop based on hydrogen thyratron, principle is：Charge circuit is connected to hydrogen thyratron
Anode, trigger circuit is connected with the grid of hydrogen thyratron, after charge circuit charging is finished, due to the forward blocking of thyratron
Property, charge circuit do not turned on the coil of thrust electromagnetic mechanism, is sending after conjunction (divides) lock order, and one is exported in trigger circuit
Precipitous positive pulse, turns on thyratron, and the energy in charging capacitor directly inputs the coil of thrust electromagnetic mechanism, promotes and coil
The aluminium dish action of cooperation is threaded off, and acts Switch main body.
Existing phase selecting switching-on apparatus has that voltage is low, and through-current capability is small, the small shortcoming of capacity, flies in High-Voltage Electrical Appliances industry
Today of speed development, existing equipment and environment far can not be competent at, add its oil bumper part-structure complexity, maintenance is tired
Difficulty, is eliminated unavoidable.And it is corresponding in high voltage, high current, in the environment of strong-electromagnetic field, existing control loop
Grid triggering is not protected, causes its malfuncton probability higher, test efficiency is influenceed.
The content of the invention
For problems of the prior art, the present invention provides a kind of insulation voltage grade height, and action is quick, through-flow energy
Power is strong, the phase selecting switching-on apparatus of high-voltage great-current simple in construction.
The present invention is to be achieved through the following technical solutions：
A kind of phase selecting switching-on apparatus of high-voltage great-current of the present invention, including operating mechanism, arc-chutes and control loop；Arc extinguishing
Room includes the insulating cylinder that sealing is set, and the moving contact and static contact being arranged in insulating cylinder that cooperate；Static contact includes
The first static contact and the second static contact of inlet-outlet line are connected respectively；First static contact and the second static contact are separately fixed at insulating cylinder
Two ends；Moving contact slides with the second static contact electrically connect all the time, and is completed by the separation with the first static contact and electrical contact
Breaking-closing operating；Charged air pressure in insulating cylinder；The output end of operating mechanism is connected with moving contact, and control loop is used to control
The action of operating mechanism.
It is preferred that, operating mechanism includes Electromagnetic Repulsion Mechanism, matching mechanism and stored energy mechanism；Matching mechanism includes double rocking arms
Quadric chain, kinematic link and drive rod；Double rocking arm quadric chains include the first rocking arm, the connecting rod and second being sequentially connected
Rocking arm；One end of drive rod is connected with moving contact, the two ends of kinematic link respectively with the other end of drive rod and the first rocking arm
Turning end is hinged；Stored energy mechanism includes shell, and the energy-stored spring group and piston being arranged in shell；The two of energy-stored spring group
End is separately mounted on shell one end and piston, is fixed on drive rod upper piston and the separating brake gas of shell other end formation sealing
Room；When being inflated in separating brake air chamber, drive after the completion of drive rod and moving contact motion separating brake, double rocking arm quadric chains are in dead point
Locking state；Electromagnetic Repulsion Mechanism is used to promote the second rocking arm to open dead point when closing a floodgate.
Further, control loop includes thyratron, charge circuit, trigger circuit and anti-interference protective loop；Thyratron
Anode connects charge circuit by the high-tension coil of Electromagnetic Repulsion Mechanism, minus earth, grid connection trigger circuit in parallel and
Anti-interference protective loop；Charge circuit includes charging transformer, discharge loop and storage capacitor, and charging transformer is used for energy storage
Electric capacity charges, and discharge loop is used to give storage capacitor electric discharge；Trigger circuit is used to provide the pulse for turning on thyratron to grid
Signal, trigger circuit includes the pulse transformer for producing pulse signal；Anti-interference protective loop is used to provide minus gate voltage to grid；
After thyratron is turned on, storage capacitor is discharged by high-tension coil, completes Electromagnetic Repulsion Mechanism action.
Further, anti-interference protective loop include first and second electrolytic capacitor, the first diode, the second diode and
AC power；One end of AC power connects the negative electrode of the first diode and the anode of the second diode, other end connection first
The negative electrode of the anode of electrolytic capacitor and the second electrolytic capacitor；The anode of the negative electrode of second diode and the second electrolytic capacitor
It is connected and is grounded；The negative electrode of the anode of first diode and the first electrolytic capacitor is connected and connects the grid of thyratron.
Further, charge circuit also includes the polar relay for being used to indicate storage capacitor electricity.
Further, trigger circuit also includes being used to be connected to charge circuit before the pulse signal of trigger circuit is provided
The preparation relay of thyratron anode；Charge circuit is by preparing the ready node of relay and the high-voltage line of Electromagnetic Repulsion Mechanism
Circle connection.
Further, control loop also includes delay triggered time relay and the charging that co- controlling trigger circuit is turned on
Finish indicating relay；The node that delay triggered time relay and charging finish indicating relay is connected respectively to pulse transforming
The two ends of device low-pressure side.
It is preferred that, the first static contact is connected to one end of insulating cylinder by mounting flange；Inside moving contact successively vertically
It is provided with contact plate, buffer spring and fixed plate；During combined floodgate, contact plate is moved with moving contact to combined floodgate direction, with mounting flange
Buffer spring compresses energy absorption after contact；Fixed plate is connected with the output end and moving contact of operating mechanism respectively.
It is preferred that, the also insulation support device including being arranged on arc-chutes lower end；Being provided with insulation support device is used for
The air inlet pipe of compressed air is provided to arc-chutes.
It is preferred that, the compressed air air pressure of filling is 1.8-2.2MPa in insulating cylinder.
Compared with prior art, the present invention has following beneficial technique effect：
Arc-chutes in the present invention insulate by using pressure-air, will be opened between contact away from diminution, so as to adapt to for example
12kV high-voltage field is required to improve its class of insulation, and reduction is opened away from so as to ensure that its rapid closing is acted；On the one hand it is stable
Intrinsic closing time, on the one hand adds combined floodgate reliability.Motion guide and electrical connection are act as by the second static contact, led to
Cross the first static contact and bear electric arc, coordinate with moving contact and realize folding.
Further, the completion lock-off coordinated by using Electromagnetic Repulsion Mechanism and double leval jib-crank block interlocking gear
Button operation, controls closing operation, and the control using control loop to Electromagnetic Repulsion Mechanism realizes that electric degree level control is closed a floodgate.
Further, control loop utilizes hydrogen thyratron forward blocking, need to can just be led after grid applies a trigger pulse
Logical characteristic, to control high-tension coil to act, so as to carry out fast operating to switching mechanism.Charge circuit and thyratron anode phase
Even, it is that charging transformer charges to charging capacitor；The gate pole for obtaining precipitous positive pulse and being sent to thyratron is made lock by trigger circuit
Flow tube is triggered；By the increased anti-interference protective loop in thyratron grid, prevent it in high pressure place, control loop by
To electromagnetic interference misoperation.
Further, anti-interference protective loop is by the combination of diode and electrolytic capacitor, and the gate pole to thyratron is applied
Plus -110V voltage, prevent that interference signal from turning on thyratron；Strong antijamming capability, dispersiveness is small, and reliable in action etc. is excellent
Point.In the case where not overhauling, it can operate continuously 500 times, and combined floodgate decentralization is no more than ± 2.7 electric degrees.
Further, finished using the polar relay realization charging of setting chain with arteries and veins low pressure side；Utilize preparation
Relay realizes the chain of switching signal and high-tension coil；Using postponing triggered time relay and charging finishes indicating relay
The chain of charge circuit and trigger signal is completed, the probability of false triggering is reduced, it is ensured that the reliability in loop.
Further, closing power is provided using cluster spring, combines to ensure combined floodgate using the compression spring of elastic constant
The fast and stable of time；Using spring bumper is devised in moving contact, closing rebound and vibration are reduced, when absorbing combined floodgate
Excessive remaining energy, adds mechanical life.
Brief description of the drawings
Fig. 1 is the structural representation of the phase selecting switching-on apparatus of high-voltage great-current described in present example.
Fig. 2 is the structural representation of control loop described in present example.
Fig. 3 is Electromagnetic Repulsion Mechanism schematic diagram described in present example.
Fig. 4 is the configuration state figure of lower pair of rocking arm quadric chain of opening and closing state in present example.A is gate-dividing state
Figure, b is "on" position figure.
Fig. 5 is the schematic enlarged-scale view of arc-chutes described in present example.
Fig. 6 is the control action flow chart described in present example.
In figure：Moving contact 1, contact plate 101, buffer spring 102, fixed plate 103, the first static contact 201, the second static contact
202, insulating cylinder 3, mounting flange 301, kinematic link 4, drive rod 5, the first rocking arm 601, the second rocking arm 602, connecting rod 7, energy storage
Groups of springs 8, piston 9, separating brake air chamber 10, insulation support device 11, air inlet pipe 12, thyratron 13, charging transformer 14, energy storage electricity
Hold 15, pulse transformer 16, the first electrolytic capacitor 17, the second electrolytic capacitor 18, the first diode 19, the second diode
20, AC power 21, polar relay 22 prepares relay 23, and charging finishes indicating relay 24, postpones triggered time relay
Device 25.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of phase selecting switching-on apparatus of high-voltage great-current of the present invention, as shown in figure 1, it include operating mechanism, arc-chutes and
Control loop；Wherein operating mechanism includes Electromagnetic Repulsion Mechanism, matching mechanism and stored energy mechanism.
As shown in figure 3, realizing it in electric degree level control device by using actuation time very small Electromagnetic Repulsion Mechanism
Close a floodgate, when precharging the large bulk capacitance finished to coil discharge, instantaneous transient transcendence produces electrodynamic repulsion force to metal dish,
The upward high-speed motion triggering tripping mechanism of metal dish, promotes dead point, device closes a floodgate.
As shown in Figure 1 and Figure 4, matching mechanism is utilized using the chain setting of quadric chain and crank block during separating brake
Dead point is spacing, it is necessary to only need to slightly apply external force when closing a floodgate on dead point, just releasable spring ability rapid closing.Stored energy mechanism is used
Compressed energy-storage groups of springs 8 is closed a floodgate to device and carries out energy conveying, during separating brake, and to being inflated in separating brake air chamber 10, air pressure promotes piston 9
Compressed energy-storage groups of springs 8, drives drive rod 5 to move upwards, when finishing position to compression, dead point is locked.During combined floodgate, electromagnetic push
Mechanism action, dead point is opened, and drive rod 5 is driven by energy-stored spring group 8 and moved downward, and moving contact 1 inserts the first static contact 201
In, complete to close a floodgate.
Wherein, when matching mechanism is specifically acted, as shown in figure 4, in figure a when rod member is in " dead point " A, in sliding block CD side
To great power namely no matter is applied on the direction of drive rod 5, it can not be made to produce displacement.When being threaded off in figure b, only need
Apply the power of a very little on A points, rocking bar OA namely the second rocking bars 602 is produced a small amount of angular displacement, just can make mechanism
Disintegrate, the energy being at this moment stored in energy-stored spring group 8, which is just discharged, makes sliding block CD namely be moved downward in drive rod 5, reaches
The purpose closed a floodgate to high speed.
High force combination spring in energy-stored spring group 8 is from around to difference, internal diameter, two brute springs that thickness differs
Composition coaxially is arranged, there is elastic constant, with the stability for the intrinsic closing time for ensureing device.Act on energy storage bullet
Operating air pressure in the separating brake air chamber 10 of spring group 8 is the atmospheric pressure of 0.6MPa, i.e., 6, due to the operating air pressure with lower section arc-chutes
Difference, so being independent closed between this part and arc-chutes.As shown in figure 1, be now "on" position, it is necessary to during separating brake,
Intake valve is opened, the gas of 6 atmospheric pressure enters from lower right corner tracheae, promotes piston 9 to move upwards, so that compressed energy-storage spring
8 energy storage of group, prepare to close a floodgate.During combined floodgate, dead-centre position recited above top need to only be opened, energy-stored spring group 8 will be rapid
Release energy, drive drive rod 5 to move downward, in moving contact 3 of the bottom of drive rod 5 for switch, moved in drive rod 5
Meanwhile, moving contact 3 is inserted in the first static contact 201, completes to close a floodgate.
As shown in Figure 1 and Figure 5, arc-chutes part is insulated using pressure-air, is improved while closing speed is ensured
Dielectric level, on the one hand stabilizes intrinsic closing time, on the one hand adds combined floodgate reliability.First static contact 201 and second
Static contact 202 uses Mume flower contact, and the end of the first static contact 201 and moving contact 1 is made of copper-tungsten material.Adopt
Blossom type contact is used, to mitigate vibration and the enhancing resistance fusion welding energy of contact during rapid closing, and the end of dynamic/static contact is become
Into the material of copper-tungsten, the ablation resistance of contact is added.The main function of second static contact 202 is motion guide, first
Static contact 201 is only static contact truly, and that serves as bears the work of electric arc.The wherein bottom of moving contact 3 and first
The fingertip upper end of static contact 201 has selected copper-tungsten as electric arc arcing material, adds its resistance to scaling loss, extends
Life-span.
Because present apparatus closing speed is very high, and the steady contact between dynamic/static contact is must assure that, moving contact 3 is first
There must be a stable insert the distance in static contact 201, so, in moving contact 3 envisaged underneath, one spring bumper, mesh
Be in order to the mounting flange 301 for allowing moving contact 3 to move to it is spacing when, do not discharged using buffer spring 102 to absorb remaining
Energy, reduce vibration, prevent close a floodgate beat, improve mechanical life.Opened between present apparatus dynamic/static contact 3 away from for 13 ± 1mm, arc extinguishing
Room air pressure is the atmospheric pressure of 2MPa, i.e., 20, and on this condition, the class of insulation can reach 12kV.
Present invention additionally comprises the support meanss 11 that support and insulation protection are provided for whole device, as shown in figure 1, it is preferred that
It is made up of insulating cylinder, and in bottom has an air inlet pipe 12 there is provided the air pressure of the 2MPa needed for arc-chutes, arc-chutes laxative remedy
Stomata is designed between the supports insulative cylinder of blue and support meanss 11, the air pressure in supports insulative cylinder is entered in arc-chutes.
The control loop of the present invention includes thyratron 13, charge circuit, trigger circuit and anti-interference protective loop.
It is divided into live part and indicating section, wherein live part loop and the anode phase of thyratron 13 again in charge circuit
Even, charging capacitor is charged by charging transformer manually before needing to close a floodgate, after charging, disconnects in parallel with charging capacitor put
Electrical circuit, due to the characteristic of the forward blocking of thyratron 13, loop can not be turned on；Meanwhile, the polarization in parallel with charging capacitor after
Electrical equipment 22 is monitoring whether charging voltage reaches setting value always, and charging is lighted when voltage is enough and finishes indicator lamp and will trigger
The low-pressure side of pulse transformer is connected with negative wire in loop, enables pulse circuit, completes the company finished with arteries and veins low pressure side of charging
Lock.
Trigger circuit is the grid that the precipitous positive pulse for inducing pulse transformer secondary winding is sent to thyratron
Trigger thyratron；There are a pair of normal opened contacts for preparing relay 23 between charge circuit and high-tension coil, providing combined floodgate
During signal, this contact could be turned on, and coil could be powered, realize the chain of switching signal and high-tension coil, but do not touch now
Generate electricity pressure, so thyratron is not turned on；To ensure that charge circuit could be triggered after being communicated with high-tension coil, instruction is finished in charging
After relay 24 is powered, an also normal opened contact is powered to be connected with delay triggered time relay 25, after a fixed response time, makes
Go here and there in the normal opened contact of delay triggered time relay 25 closure of trigger circuit primary side, now, pulse transformer could be powered,
Realize the chain of charge circuit and trigger signal.
Anti-interference protective loop has the tandem compound of two diodes and two electrolytic capacitors for gate electrode side, for a long time to grid
Pole application -110V voltage, prevents that interference signal from turning on thyratron into grid, to simplify device, can push back negative grid
PCB single-sided circuit boards are made in road part, are easy to maintenance；Pulse transformer primary side is a diode and an electrolytic capacitor
Tandem compound, when pulse transformer needs output, grid is offset in the stable precipitous pulse that a positive polarity is exported to grid
Minus gate voltage and triggering, thyratron conducting, high-tension coil is powered, electrical apparatus release action, switch motion.
Insulated by arc-chutes part using pressure-air, safe and reliable nontoxic pollution-free；Blossom type touch base and copper tungsten are closed
The lower static contact finger of gold adds its ablation resistance, extends the life-span.Quadric chain and crank block interlocking fit are used
Lock-off buckle mechanism, simple in construction, easy to maintenance, reliability is high.Cluster spring elastic constant, is effectively ensured the intrinsic combined floodgate of device
Time.Using increase anti-interference protective loop in terms of control loop and charging finish etc. it is chain, in high-voltage great-current strong electromagnetic
The characteristics of there is strong antijamming capability in the environment of；Coordinate operating mechanism and arc-chutes in the case where not overhauling, can be continuous
Operation 500 times, and combined floodgate decentralization is no more than ± 2.7 electric degrees.
Described in this preferred embodiment, the excellent parameter that it can reach is as follows, rated voltage：12kV；Switching current：
120kA (effective), 330kA (peak value)；Heat-stable current：120kA (0.3s), 120kA (1s)；Separating brake magnetic valve rated voltage：
Direct current 220V；The energy needed for closing coil：Charge to 6kV 10uf capacitor operating air pressures：20±1ATM；Clearance between open contacts：13
±1mm；Admittedly close the time：20ms；Combined floodgate decentralization：± 2.7 electric degrees；1 minute industrial frequency withstand voltage between contact：42kV；To foundational shock
Load：1.5 tons；The electrical wear life-span：Do not overhaul, continuously make 500 hot line jobs, combined floodgate decentralization is no more than ± 2.7 electric degrees.
Switch, high-tension coil is discharged using high-voltage capacitor, by the line of Electromagnetic Repulsion Mechanism for quick, exact operations
Circle repulsion acts electrical apparatus release, carrys out Operation switch.
Now by taking remote operation as an example, as shown in Figure 2 and Figure 6, according to this control loop, by switching manipulation process, details are as follows.
1st, needed by experiment, the closing switch phase for selecting to operate by button switch makes the middle relay of corresponding phase
Device 24ZJ coil electricities, normal opened contact closure, connect the control loop power supply of corresponding phase and to thyratron 13 plus filament supply and
Negative-grid bias.
2nd, by charge switch 21K dextrorotation 45 ° be put in charge position, now HK has divided, its normally closed auxiliary contact closure, makes
21ZC charging contactor coil band points, 21ZC a pair of normal opened contacts closure, form 21ZC self-holding circuit.Even if now putting
21K is opened, controlling switch returns to " 0 " position, and 21ZC two pairs of main contacts still connect the charging rectifier loop of main capacitance.
3rd, to be charged to predetermined voltage, the namely voltage monitoring relay 2JJ of polar relay 22 reaches startup voltage, fills
The normal opened contact that electricity finishes indicating relay 24 connects 21ZJ relay coils, and 21ZJ junction closures connect " charging is finished " letter
Signal lamp, sends optical signal, and the namely closing pulse transformer 2MB of make pulse transformer 16 electric power loop carries out combined floodgate standard
It is standby.
A. closing operation：It is manually operated.
Controlling switch 22K on master station is put in right 45 ° of positions, the 5 of 22K, 6 contacts make preparation relay 23 namely
High voltage connector 22ZC coil electricities, the anode of thyratron 13 is added to by the high-pressure side of the storage capacitor 15 charged, this time gating stream
The grid of pipe 13 has applied back bias voltage, is still not turned on.
The 1 of 22K controlling switches, 2 contacts are also connected at 45 degree of positions, make the namely time of delay trigger relay 25 after
Electric apparatus coil 2SJ is powered, after certain time-delay, that is, after treating 22ZC contacts, 2SJ contact pulse transformer 2MB, its
Pulse front edge senses a precipitous positive pulse in 2MB secondary windings, and being sent to thyratron grid through 23C isolation capacitances makes thyratron
Triggering.Thyratron turn on process only counts microsecond, so as to greatly accelerate the time delay of the electromagnetic process of wire loop.
B. program control instrument is controlled
5,6 and 1 of 22K on above-mentioned master station, 2 operation contents made are respectively completed by two pulses, first, making height
Tentaculum 22ZC coil electricities are crimped, thyratron anode and capacitor high-pressure side are connected.
Second delayed about 0.2s of the previous pulse of pulse ratio is sent out to pulse transformer, to ensure to have on thyratron positive pole
In the case of the high-voltage power supply stably turned on, trigger pulse is sent out to thyratron grid, the phase selection operation of closing switch is completed.
Claims (9)
1. a kind of phase selecting switching-on apparatus of high-voltage great-current, it is characterised in that including operating mechanism, arc-chutes and control loop；
The arc-chutes include the insulating cylinder (3) that sealing is set, and the moving contact being arranged in insulating cylinder (3) that cooperates
And static contact (1)；Static contact includes the first static contact (201) and the second static contact (202) for connecting inlet-outlet line respectively；First is quiet
Contact (201) and the second static contact (202) are separately fixed at the two ends of insulating cylinder (3)；Moving contact (1) all the time with the second static contact
(202) electrical connection is slided, and breaking-closing operating is completed by the separation with the first static contact (201) and electrical contact；Insulating cylinder (3)
Interior charged air pressure；
The output end of operating mechanism is connected with moving contact (1), and control loop is used for the action for controlling operating mechanism；
The operating mechanism includes Electromagnetic Repulsion Mechanism, matching mechanism and stored energy mechanism；
Matching mechanism includes double rocking arm quadric chains, kinematic link (4) and drive rod (5)；Double rocking arm quadric chains include
The first rocking arm (601), connecting rod (7) and the second rocking arm (602) being sequentially connected；One end of drive rod (5) connects with moving contact (1)
Connect, the two ends of kinematic link (4) are hinged with the other end of drive rod (5) and the turning end of the first rocking arm (601) respectively；
Stored energy mechanism includes shell, and the energy-stored spring group (8) and piston (9) being arranged in shell；Energy-stored spring group (8)
Two ends are separately mounted on shell one end and piston (9), and piston (9) and the shell other end being fixed on drive rod (5) are formed
The separating brake air chamber (10) of sealing；
When inflation in separating brake air chamber (10), after the completion of drive drive rod (5) and moving contact (1) motion separating brake, double rocking arm double leval jibs
Mechanism is in dead point locking state；
Electromagnetic Repulsion Mechanism is used to promote the second rocking arm to open dead point when closing a floodgate.
2. a kind of phase selecting switching-on apparatus of high-voltage great-current according to claim 1, it is characterised in that the control loop
Including thyratron (13), charge circuit, trigger circuit and anti-interference protective loop；
The anode of thyratron (13) connects charge circuit, minus earth, grid connection by the high-tension coil of Electromagnetic Repulsion Mechanism
Trigger circuit and anti-interference protective loop in parallel；
Charge circuit includes charging transformer (14), discharge loop and storage capacitor (15), and charging transformer (14) is used for storage
Energy electric capacity (15) charging, discharge loop is used to give storage capacitor (15) electric discharge；
Trigger circuit is used to provide the pulse signal for turning on thyratron (13) to grid, and trigger circuit includes producing pulse signal
Pulse transformer (16)；
Anti-interference protective loop is used to provide minus gate voltage to grid；
After thyratron (13) is turned on, storage capacitor (15) is discharged by high-tension coil, completes Electromagnetic Repulsion Mechanism action.
3. the phase selecting switching-on apparatus of a kind of high-voltage great-current according to claim 2, it is characterised in that anti-interference protection is returned
Road includes the first electrolytic capacitor (17), the second electrolytic capacitor (18), the first diode (19), the second diode (20) and friendship
Flow power supply (21)；One end of AC power (21) connects the negative electrode of the first diode (19) and the anode of the second diode (20),
The other end connects the anode of the first electrolytic capacitor (17) and the negative electrode of the second electrolytic capacitor (18)；Second diode (20)
The anode of negative electrode and the second electrolytic capacitor (18) is connected and is grounded；The anode and the first electrolytic capacitor of first diode (19)
(17) negative electrode is connected and connects the grid of thyratron (13).
4. the phase selecting switching-on apparatus of a kind of high-voltage great-current according to claim 2, it is characterised in that charge circuit is also wrapped
Include the polar relay (22) for indicating storage capacitor electricity.
5. the phase selecting switching-on apparatus of a kind of high-voltage great-current according to claim 2, it is characterised in that trigger circuit is also wrapped
Include the preparation relay (23) for charge circuit to be connected to thyratron anode before the pulse signal of trigger circuit is provided；Fill
Electrical circuit is connected by preparing the ready node of relay (23) and the high-tension coil of Electromagnetic Repulsion Mechanism.
6. a kind of phase selecting switching-on apparatus of high-voltage great-current according to claim 2, it is characterised in that the control loop
The delay triggered time relay (25) and charging for also including the conducting of co- controlling trigger circuit finish indicating relay (24)；Prolong
Slow triggered time relay (25) and charging finish the node of indicating relay (24), and to be connected respectively to pulse transformer (16) low
Press the two ends of side.
7. a kind of phase selecting switching-on apparatus of high-voltage great-current according to claim 1, it is characterised in that the first static contact
(201) one end of insulating cylinder (3) is connected to by mounting flange (301)；Moving contact (1) inside is axially disposed successively contact
Plate (101), buffer spring (102) and fixed plate (103)；During combined floodgate, contact plate (101) is transported with moving contact (1) to combined floodgate direction
Dynamic, buffer spring (102) compresses energy absorption after being contacted with mounting flange (301)；Fixed plate (103) respectively with operating mechanism
Output end and moving contact (1) connection.
8. the phase selecting switching-on apparatus of a kind of high-voltage great-current according to claim 1, it is characterised in that also including being arranged on
The insulation support device (11) of arc-chutes lower end；It is provided with insulation support device for providing entering for compressed air to arc-chutes
Tracheae (12).
9. the phase selecting switching-on apparatus of a kind of high-voltage great-current according to claim 1, it is characterised in that in insulating cylinder (3)
The compressed air air pressure of filling is 1.8-2.2MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908163.4A CN105374615B (en) | 2015-12-09 | 2015-12-09 | A kind of phase selecting switching-on apparatus of high-voltage great-current |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510908163.4A CN105374615B (en) | 2015-12-09 | 2015-12-09 | A kind of phase selecting switching-on apparatus of high-voltage great-current |
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| CN105374615B true CN105374615B (en) | 2017-07-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107947135B (en) * | 2017-12-07 | 2023-10-27 | 常州博瑞电力自动化设备有限公司 | Plug-in trigger loop device |
| EP3928345A1 (en) * | 2019-03-27 | 2021-12-29 | Siemens Aktiengesellschaft | Arc extinguishing systems |
| CN112951523B (en) * | 2021-01-19 | 2023-09-05 | 中车株洲电力机车有限公司 | Insulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102006042101B4 (en) * | 2006-09-07 | 2008-09-25 | Switchcraft Europe Gmbh | Vacuum switch for medium and high voltages |
| EP1930929B2 (en) * | 2006-12-06 | 2013-01-30 | Abb Research Ltd. | High-tension circuit breaker with a metal tank filled with dielectric gas |
| KR101045158B1 (en) * | 2008-12-31 | 2011-06-30 | 엘에스산전 주식회사 | High voltage gas circuit breaker |
| CN101504895A (en) * | 2009-01-16 | 2009-08-12 | 北京维益埃电气有限公司 | Novel air pressing type load switching unit |
| CN102867677A (en) * | 2012-09-26 | 2013-01-09 | 中电装备恩翼帕瓦（山东）高压开关有限公司 | Braking device for spring energy storage mechanism of breaker |
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Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |