CN211700176U - Special arc extinguish chamber for switching reactor - Google Patents

Abstract

The utility model relates to a special arc extinguish chamber for a switching reactor, which comprises an arc extinguish chamber unit, a rapid switching unit and a resistance-capacitance unit, wherein the arc extinguish chamber unit comprises a first insulating supporting cylinder fixedly connected with a first static contact unit and a first moving contact unit, the first static contact unit comprises a first static contact, and the first moving contact unit comprises a first moving contact arranged opposite to the first static contact; the rapid switching-on unit comprises a second insulating supporting cylinder and a second moving contact which is connected in the second insulating supporting cylinder in a sliding mode, a transmission device which is connected with the transmission pull rod and drives the second moving contact to move is arranged in the second insulating supporting cylinder, and a pressable static contact which is electrically connected with the resistance-capacitance unit is arranged in the fixed seat. When the arc extinguish chamber unit is switched on or off, the overvoltage generated during switching on or off is reduced due to the input of the resistance-capacitance unit, and the generation of heavy breakdown and heavy burning is avoided; when the switch is closed, the resistance-capacitance units are isolated, and the service life of the resistance-capacitance units is prolonged.

Description

Special arc extinguish chamber for switching reactor

Technical Field

The utility model relates to a high tension switchgear technical field especially involves a dedicated explosion chamber of switching reactor.

Background

And the shunt reactor is arranged in the power system and used for absorbing reactive power and ensuring voltage stability. The shunt reactor is directly connected with a power grid or connected in series in a balance winding of a transformer, and is usually directly switched by a circuit breaker. When the circuit breaker switches the reactor, because the switching frequency is frequent, and the special structure of the reactor, overvoltage always exists for a certain number of times. The recent reliability survey report of CIGRE indicates that every 100 times of switching of a circuit breaker on the high-voltage shunt reactor side, there are nearly 2.5 times of serious switching failures, one reason is that in the electrical industry, because the circuit breaker is used for cutting off the maximum short-circuit current, the huge arc extinguishing capacity of the circuit breaker can also act for cutting off low-inductance current load, so that the electric arc is cleared in advance before the current is overflowed.

The breakdown and re-ignition of the fracture gap can lead to the generation of overvoltages, which are generally of very high frequency. Due to the generation of high-frequency overvoltage, unbalanced action can be performed on the first turns of the reactor coil, so that the problems of turn-to-turn breakdown and the like are caused, and the reactor is damaged. Therefore, a new structure type of circuit breaker for switching the reactor is urgently needed at present, and the core part of the circuit breaker is just the arc extinguish chamber, so that the arc extinguish chamber special for switching the reactor is very necessary.

Disclosure of Invention

To the technical problem, the utility model provides a dedicated explosion chamber of switching reactor to solve current explosion chamber when being used for breaking the reactor, there is the breakdown probability height, easily takes place the problem of overvoltage.

The utility model is realized by the following technical proposal, and provides a special arc extinguish chamber for a switching reactor, which comprises an arc extinguish chamber unit, a rapid switching unit and a resistance-capacitance unit which are arranged in sequence,

the arc extinguish chamber unit comprises a first insulating support cylinder and a first moving contact unit, wherein one end of the first insulating support cylinder is fixedly connected with a first fixed contact unit, the first moving contact unit is arranged in the first insulating support cylinder in a sliding mode, the other end of the first insulating support cylinder is fixedly connected with a quick switching-on unit, the first fixed contact unit comprises a fixedly arranged first fixed contact, the first moving contact unit comprises a first moving contact and a transmission pull rod, the first moving contact is axially opposite to the first fixed contact, the transmission pull rod is fixedly connected with the first moving contact, and the transmission pull rod is fixedly connected with an insulating pull rod connected with an operating mechanism;

the rapid switching-on unit comprises a second insulating support cylinder, a fixed seat and a second moving contact, wherein one end of the second insulating support cylinder is fixedly connected with the first insulating support cylinder, the fixed seat is fixedly connected with the other end of the second insulating support cylinder, the second moving contact is connected in the second insulating support cylinder in a sliding mode, a transmission device which is connected with the transmission pull rod and drives the second moving contact to move along the axial direction is arranged in the second insulating support cylinder, a pressable static contact which is opposite to the second moving contact along the axial direction is arranged in the fixed seat, and the pressable static contact is electrically connected with the capacitance-.

When the arc extinguish chamber unit is switched on, the operating mechanism acts in the opposite direction to drive the first moving contact to move towards the first fixed contact, and meanwhile, the second moving contact moves away from the pressable fixed contact; when the arc extinguish chamber unit is switched on, the rapid switching-on unit is switched off, and the resistance-capacitance unit is separated from the high-voltage line; when the arc extinguish chamber unit performs the opening operation, the rapid closing unit performs the closing operation, and the resistance-capacitance unit is put into operation to limit the generation of overvoltage and improve the operation reliability of the power system.

Preferably, the transmission device comprises a transmission shaft fixedly connected with the transmission pull rod and a crank arm with one end hinged with the second insulating support cylinder, the other end of the crank arm is hinged with a connecting arm, the connecting arm is hinged with the second moving contact, one side, far away from the connecting arm, of the crank arm is connected with the second insulating support cylinder through a separating brake spring, a guide wheel is installed at one end, facing the crank arm, of the transmission shaft, and a step opposite to the guide wheel is arranged on the side face of the crank arm. The transmission device of the optimized scheme adopts a connecting rod type structure, when the transmission shaft moves, the connecting lever is pushed to rotate through the guide wheel, so that the connecting arm is driven to push the second moving contact to move, the structure is simple, the opening spring is arranged, when the arc extinguish chamber unit is switched on, the connecting lever is driven to rotate by the opening spring, the second moving contact is far away from the pressable fixed contact to move, meanwhile, the hysteresis of the opening spring is utilized, the rapid switching-on unit is switched off slowly, and the resistance-capacitance unit is cut off.

Preferably, a partition board is arranged in the second insulating support cylinder, and a guide hole matched with the second moving contact is formed in the partition board. According to the optimized scheme, the partition plate and the guide hole are arranged, so that support and guide are provided for the second moving contact, and the contact reliability of the second moving contact and the pressable fixed contact is improved.

Preferably, the capacitance resistance unit comprises a conductive plate fixedly connected with the fixing seat, the pressable static contact penetrates through the conductive plate and is in contact with the conductive plate, and the conductive plate and the pressable static contact are further connected through a second conductive spring. According to the optimized scheme, the compressible static contact is conductive to the conductive plate, and the second conductive spring is arranged, so that the conductive plate and the compressible static contact are tightly pressed by the second conductive spring, and the contact is tighter and the conductive reliability is better.

Preferably, the pressable static contact is in sliding connection with the fixed seat, a compression spring is sleeved on the pressable static contact, one end of the compression spring is propped against the conductive plate, and the other end of the compression spring is propped against a limiting table arranged on the pressable static contact. The structure of the optimized scheme is arranged, so that the compressible static contact can move under the action of the second movable contact, after the second movable contact is contacted with the compressible static contact, the arc extinguish chamber unit can continue to be switched off, the rapid switching-on unit keeps a switching-on state unchanged, and when the arc extinguish chamber unit needs to execute a switching-on action, and the first movable contact just starts to move, the rapid switching-on unit executes an idle stroke without moving, so that the rapid switching-on unit is still in a switching-on state.

As optimization, the resistance-capacitance unit includes current conducting plate and the first fixed plate through the insulation board rigid coupling to and wear to establish the insulator spindle on current conducting plate and the first fixed plate, and the cover is equipped with regulating block, first briquetting, second briquetting and pressure spring on the insulator spindle between current conducting plate and the first fixed plate in proper order, still is equipped with a plurality of resistance cards that the cover was established on the insulator spindle between first briquetting and the second briquetting, the resistance card passes through the wire with first fixed plate and is connected, and first fixed plate passes through electric capacity connection ground connection fixed plate. The resistance-capacitance unit of this optimization scheme makes each resistance card in close contact with through hold-down spring's effect, guarantees to switch on the effect to can change the quantity of resistance card according to actual need.

The utility model has the advantages that: when the arc extinguish chamber unit is switched on or off, overvoltage generated during switching on or off is reduced due to the input of the resistance-capacitance unit, and the generation of heavy breakdown and restriking is avoided; when the switch is closed, the resistance-capacitance unit is isolated through the on-off operation of the rapid switch-on unit, and the service life of the resistance-capacitance unit is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the utility model during closing;

FIG. 2 is a schematic view of the transmission of FIG. 1 in a state;

fig. 3 is a schematic top view of the structure of the present invention during opening;

FIG. 4 is a schematic structural view of the present invention during opening;

fig. 5 is a schematic structural diagram of the first fixed contact unit in fig. 4;

fig. 6 is a schematic structural view of the first movable contact unit in fig. 4;

FIG. 7 is a schematic view of the transmission of FIG. 4 in a state;

FIG. 8 is a schematic view of the internal structure of the fixing base in FIG. 4;

FIG. 9 is a schematic structural diagram of the RC unit shown in FIG. 4;

shown in the figure:

1. an arc extinguish chamber unit, 2, a rapid closing unit, 3, a resistance-capacitance unit, 4, a first fixed contact unit, 5, a first insulating supporting cylinder, 6, a first movable contact unit, 7, a second movable contact unit, 8, a second insulating supporting cylinder, 9, a pressable fixed contact, 10, a resistance unit, 11, a capacitance unit, 12, an insulating pull rod, 13, a transmission arm, 14, a first wire outlet seat, 15, a fixed contact supporting seat, 16, a first static arc contact, 17, a guide cylinder, 18, a contact finger fixing seat, 19, a first outer supporting ring, 20, a first static main contact, 21, an insulating supporting cylinder, 22, a large nozzle, 23, a first dynamic main contact, 24, an outer supporting seat, 25, a second wire outlet seat, 26, a separating brake spring, 27, a transmission mechanism chamber, 28, a guide wheel, 29, a guide belt, 30, a second movable contact, 31, an insulating cylinder, 32, a second outer supporting ring, 33, a guide belt, 30, a second movable contact, a first movable contact spring, a second contact spring, The device comprises a second fixed contact, 34, a second guide strip, 35, a phase-locked loop, 36, a conductive plate, 37, an adjusting block, 38, a second pressing block, 39, an insulating rod, 40, a compression spring, 41, a first fixing plate, 42, a capacitor, 43, a grounding fixing plate, 44, an insulating plate, 45, a resistor disc, 46, a first pressing block, 47, a second conductive spring, 48, a compression spring, 49, a fixing seat, 50, a second fixed main contact, 51, a first guide plate, 52, a third conductive spring, 53, a second guide plate, 54, a connecting arm, 55, a crank arm, 56, a transmission shaft, 57, an inner support seat, 58, a transmission pull rod, 59, a first conductive spring, 60, an elastic rubber ring, 61, a first guide strip, 62, a pressure cylinder, 63, a piston, 64, a first moving arc contact, 65 and a small nozzle.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 to 3, the arc extinguish chamber for the switching reactor comprises an arc extinguish chamber unit 1, a rapid switching-on unit 2 and a resistance-capacitance unit 3 which are sequentially arranged along an axial direction. An outer supporting seat 24 of the arc extinguish chamber unit is connected with a wire outlet seat 25 of the rapid switching-on unit through a bolt, and a transmission arm 13 of the arc extinguish chamber unit of an internal transmission part is connected with a transmission shaft 56 of the rapid switching-on unit through a screw; the fixed seat 49 of the quick closing unit is connected with the fixed plate 36 of the resistance-capacitance unit through a screw.

The arc extinguish chamber unit 1 comprises a first fixed contact unit 4, a first insulating support cylinder 5, a first movable contact unit 6 and an insulating pull rod 12, wherein the insulating pull rod 12 is connected with an operating mechanism. The first fixed contact unit 4 is fixedly connected to one end of the first insulating support cylinder 5, the fast switching-on unit is fixedly connected to the other end of the first insulating support cylinder, and the first movable contact unit 6 is slidably arranged in the first insulating support cylinder 5. During assembly, the inner support seat 57 of the first movable contact unit 6 and the outer support seat 24 of the first insulating support cylinder 5 are fixed by bolts, then the first fixed contact unit 4 is placed on the other side of the first insulating support cylinder 5, after the first fixed arc contact 16 of the first fixed contact unit 4 and the first movable arc contact 64 of the first movable contact unit 6 are adjusted to be aligned, the fixed contact support seat 15 of the first fixed contact unit 4 and the first outer support ring 19 of the first insulating support cylinder 5 are fixed by bolts, and finally the insulating pull rod 12 and the transmission arm 13 of the first movable contact unit 6 are fixed by bolts.

The first fixed contact unit 4 comprises a first wire outlet seat 14, a fixed contact support seat 15, a guide cylinder 17, a contact finger fixing seat 18 and a first fixed contact which is fixedly arranged, the first fixed contact comprises a first fixed arc contact 16 positioned at the center and a first fixed main contact 20 positioned at the periphery of the first fixed arc contact, the first fixed arc contact 16 is fixedly connected with the fixed contact support seat 15 through threads, and the first fixed main contact 20 is fixedly connected with the contact finger fixing seat 18 through screws. During assembly, the contact finger fixing seat 18 is firstly connected with the first static main contact 20 through a screw; then, centering the contact finger fixing seat 18 and the first static contact supporting seat 15, fixing the contact finger fixing seat by using a screw, pressing the guide cylinder 17 into the interior, and fixing the relative position of the guide cylinder 17 and the contact finger fixing seat 18 by using the screw; finally, the first stationary arc contact 16 is screwed into the stationary contact support seat 15 through threads, and the first wire outlet seat 14 and the stationary contact support seat 15 are fixed through bolts.

The first movable contact unit 6 comprises a first movable contact arranged opposite to the first fixed contact along the axial direction, a transmission pull rod 58 fixedly connected with the first movable contact, a transmission arm 13, a large nozzle 22, an inner support seat 57, a first conductive spring 59, an elastic rubber ring 60, a first guide belt 61, a pressure cylinder 62, a piston 63 and a small nozzle 65, wherein the transmission pull rod is made of aluminum alloy, the transmission pull rod is fixedly connected with the insulation pull rod through the transmission arm, the first movable contact comprises a first movable main contact 23 and a first movable arc contact 64, the first movable main contact 23 is opposite to the first fixed main contact 20 along the axial direction, and the first movable arc contact 64 is opposite to the first fixed arc contact 16 along the axial direction. During assembly, the inner supporting seat 57 is vertically placed and arranged in the transmission arm 13, the first conductive spring 59 is placed in a conductive groove of the inner supporting seat 57, and the elastic rubber ring 60 and the first guide belt 61 are placed in a guide groove; the first moving arc contact 64 is arranged inside the small nozzle 65 and then inside the piston 63, and then the connection between the first moving arc contact 64 and the transmission pull rod 58 is completed through threads; the large nozzle 22 is placed in the first movable main contact 23, and then the first movable main contact 23, the piston 63 and the air cylinder 62 are fixed through screws to form an assembly body; finally, the assembly body is placed into the inner supporting seat 57, and the transmission pull rod 58 of the assembly body is fixed with the transmission arm 13 through a screw.

The first insulating supporting cylinder 5 comprises a first outer supporting ring 19, an insulating supporting cylinder 21 and an outer supporting seat 24, and the first outer supporting ring 19, the insulating supporting cylinder 21 and the outer supporting seat 24 are assembled into a whole by a press machine after being aligned by a special tool.

The rapid switching-on unit comprises a second moving contact unit 7, a second insulating supporting cylinder 8 and a pressable static contact 9, when the rapid switching-on unit is assembled, the second insulating supporting cylinder 8 is firstly horizontally placed, and a transmission mechanism chamber 27 is connected with a second wire outlet seat 25 of the second moving contact unit through a screw; and then the fixed seat 49 of the pressable fixed contact is fixed with the outer support ring 32 of the second insulating support cylinder through bolts. The second movable contact unit 7 comprises a second wire outlet seat 25, a switching-off spring 26, a guide belt 29, a second movable contact 30, a first guide plate 51, a third conductive spring 52, a second guide plate 53, a connecting arm 54, a crank arm 55 and a transmission shaft 56, wherein a copper-tungsten alloy is sintered at the end part of the first movable contact 30.

Specifically, the fast closing unit 2 of this embodiment includes a second insulating supporting cylinder 8 having one end fixedly connected to the first insulating supporting cylinder 5, a fixing seat 49 fixedly connected to the other end of the second insulating supporting cylinder, and a second moving contact 30 slidably connected to the second insulating supporting cylinder, a transmission device connected to the transmission rod and driving the second moving contact to move along the axial direction is disposed in the second insulating supporting cylinder, a compressible static contact 9 axially opposite to the second moving contact is disposed in the fixing seat, and the compressible static contact is electrically connected to the capacitance-resistance unit. The stationary depressible contact 9 of this embodiment is slidably connected to a fixing seat 49, and a compression spring 48 is sleeved on the stationary depressible contact, and one end of the compression spring is abutted to the conductive plate, and the other end of the compression spring is abutted to a limit table disposed on the stationary depressible contact. Specifically, the compressible stationary contact 9 includes a second stationary contact 33, a second guide strip 34, a compression spring 48, a fixed seat 49, and a second stationary main contact 50, and an end of the second stationary contact 33 is sintered with a copper-tungsten alloy. During assembly, the second guide strip 34 is firstly installed in the fixed seat 49, the second fixed main contact 50 is fixed through a screw, then the second fixed contact 33 is inserted, and finally the compression spring 48 is sleeved on the second fixed contact 33.

The transmission device comprises a transmission shaft 56 fixedly connected with a transmission pull rod and a connecting lever 55 with one end hinged with the second insulating supporting cylinder 8, the other end of the connecting lever 55 is hinged with a connecting arm 54, the connecting arm 54 is hinged with the second moving contact 30, one side of the connecting lever far away from the connecting arm is connected with the second insulating supporting cylinder 8 through a switching-off spring, one end of the transmission shaft 56 facing the connecting lever is provided with a guide wheel 28, the side surface of the connecting lever 55 is provided with a step opposite to the guide wheel, when the arc extinguish chamber unit is switched off, the transmission shaft drives the guide wheel to move, the guide wheel is contacted with the step and pushes the connecting lever to rotate, when the connecting lever rotates to a position lower than the guide wheel, the guide wheel loses the pushing effect on the step through the surface of the step, the transmission shaft provided with the guide wheel limits the rotation of the connecting lever, when the arc extinguish chamber unit continues to be switched off, the rapid switching-on, the transmission shaft is enabled to move along the axial direction, and the radial displacement of the transmission shaft is limited.

The second insulating supporting cylinder 8 comprises a transmission mechanism chamber 27, an insulating cylinder 31 and a second outer supporting ring 32, and the transmission mechanism chamber 27, the insulating cylinder 31 and the second outer supporting ring 32 are centered through an alignment tool and then are pressed by a press machine. A partition board is arranged in the second insulating supporting cylinder 8, a guide hole matched with the second moving contact is formed in the partition board, the guide hole is further connected with the second moving contact through a third conductive spring 52, a first guide plate 51 and a second guide plate 53 are fixedly connected to two sides of the guide hole respectively, and the second moving contact sequentially penetrates through the first guide plate 51, the partition board and the second guide plate 53.

During assembly, firstly, a third conductive spring 52 is placed in the transmission mechanism chamber 27 of the second insulating support cylinder 8, then a first guide plate 51 and a second guide plate 53 are fixed on the left and the right through bolts, a guide belt 29 is placed in the first guide plate 51 and the second guide plate 53, a crank arm 55 is fixed in the transmission mechanism chamber 27 through a shaft pin, and a guide wheel 28 is connected with a transmission shaft 56 and then placed in a guide position of the transmission mechanism chamber 27; the second moving contact 30 is connected with the connecting arm 54 through a shaft pin, then the moving contact 30 is inserted into the conductive spring 52, and the connecting arm 54 is connected with the crank arm 55 through the adjusting shaft pin; the second wire outlet base 25 is fixed to the transmission mechanism chamber 27 by screws, and then the opening spring 26 is connected to the second wire outlet base 25 and the crank arm 55, respectively.

The resistance-capacitance unit 3 includes a resistance unit 10 and a capacitance unit 11, and the resistance unit 10 and the capacitance unit 11 are respectively connected to the first fixing plate 41.

The resistance unit 10 includes a phase-locked loop 35, a conductive plate 36, an adjusting block 37, a second press block 38, an insulating rod 39, a compression spring 40, a first fixing plate 41, an insulating plate 44, a resistance sheet 45, and a first press block 46.

The conductive plate 36 is fixedly connected to the first fixing plate 41 through the insulating plate 44, the conductive plate 36 is fixedly connected to the fixing base 49, the depressible contact penetrates through the conductive plate and contacts with the conductive plate, and the conductive plate and the depressible contact are further connected through the second conductive spring 47. The insulating rod 39 penetrates through the conducting plate 36 and the first fixing plate 41, the adjusting block 37, the first pressing block 46, the second pressing block 38 and the compression spring 40 are sequentially sleeved on the insulating rod between the conducting plate and the first fixing plate, the insulating rod between the first pressing block 46 and the second pressing block 38 is sleeved with the plurality of resistor discs 45, the resistor discs 45 are connected with the first fixing plate through leads, and the first fixing plate is connected with the grounding fixing plate 43 through the capacitor 42. During assembly, firstly, the insulating rod 39 with the groove is connected with the conductive plate 36 through the phase-locked loop 35, and then the adjusting block 37, the first pressing block 46, the resistor disc 45, the second pressing block 38 and the compression spring 40 are sequentially connected onto the insulating rod 39 in series, wherein the second pressing block 38 is connected with the first fixing plate 41 through a wire; the insulating plate 44 is connected to the conductive plate 36 by bolts; then, the first fixing plate 41 is connected in series with the insulating rod 39, the phase-locked loop 35 is placed in the groove of the insulating rod 39 to prevent the insulating rod 39 from moving back and forth, and the insulating plate 44 is connected with the first fixing plate 41 through screws; finally, a second conductive spring 47 is disposed in the conductive slot of the conductive plate 36 to ensure that the tail end of the second stationary contact 33 is in good contact with the conductive plate 36, thereby completing the conductive function.

The capacitor unit 11 comprises a capacitor 42 and a grounding fixing plate 43, wherein the capacitor 42 is connected with the grounding fixing plate 43 through a screw, and the other side of the capacitor is connected with the first fixing plate 41 through a screw; the ground fixing plate 43 is connected to the ground terminal by a bolt.

The utility model discloses an operating principle does, under operating device's drive, drives the motion of driving arm 13 through insulating pull rod 12, and then drives the movable part motion of the second moving contact unit of the first moving contact unit 6 movable part of explosion chamber unit and rapid closing unit 2. When the arc extinguish chamber unit carries out switching-on operation, the rapid switching-on unit carries out switching-off operation, and the resistance-capacitance unit is separated from the high-voltage line; when the arc extinguish chamber unit performs the opening operation, the rapid closing unit performs the closing operation, and the resistance-capacitance unit is put into operation to limit the generation of overvoltage and improve the operation reliability of the power system.

The utility model discloses dedicated explosion chamber application method of switching reactor, including following aspect:

1. when the arc extinguish chamber unit performs the opening operation, the operating mechanism drives the first moving contact to move away from the first fixed contact through the insulating pull rod, and simultaneously pushes the second moving contact to move towards the pressable fixed contact through the transmission device;

when the first moving contact and the first fixed contact of the arc extinguish chamber unit are at the rigid separation position, the second moving contact of the rapid switching-on unit faces towards the rigid connection position with the compressible fixed contact;

when the arc extinguish chamber unit continues to perform the switching-off operation, the second moving contact of the rapid switching-on unit continues to move to perform the switching-on operation until the guide wheel of the connecting arm loses the action, at the moment, the arc extinguish chamber unit continues to perform the switching-off operation, and the rapid switching-on unit is switched on in place and is not switched on any more;

2. when the arc extinguish chamber unit executes a switching-on command, the operating mechanism drives the first moving contact to move towards the first fixed contact through the insulating pull rod, when the first moving contact of the arc extinguish chamber unit just moves, the rapid switching-on unit does not move during an idle stroke, when a guide wheel of the connecting arm retreats to the position where the guide wheel does not act on the connecting lever any longer, the connecting lever starts to execute switching-off operation under the action of a switching-off spring, and when the arc extinguish chamber unit is completely switched on, the rapid switching-on unit slowly switches off due to the spring hysteresis of the rapid switching-on unit to complete the switching-off of the capacitance resistance unit;

3. for the rapid switching-on unit, when the arc extinguish chamber unit executes a switching-off command, the rapid switching-on unit performs switching-on operation, the second moving contact performs switching-on under the action of the transmission shaft, when the second moving contact is in contact with the second fixed contact, the second fixed contact is pushed to continue to move, the compression spring is compressed, and the second fixed contact ensures the contact pressure of the second moving contact and the second fixed contact under the action of the spring force; when the arc extinguish chamber unit executes a switching-on command, the rapid switching-on unit performs switching-off operation, and the second moving contact completes the switching-off operation at a low speed under the action of the switching-off spring;

4. for the resistance-capacitance unit, when the arc extinguish chamber unit executes the opening operation, the arc extinguish chamber unit is put into operation; when the arc extinguish chamber unit executes the switching-on operation, the rapid switching-on unit is used for switching off the switch at a low speed so as to enable the switch to quit the operation.

When the reactor is cut off, the resistance-capacitance unit is put into use in due time, the switching-off overvoltage is limited, and the occurrence of heavy breakdown and reburning between the fractures of the arc extinguish chamber is prevented; after the reactor is put into operation, the resistance-capacitance unit is isolated by utilizing the separation of the contacts in the quick switching-on unit, the reactor is not put into a power grid system any more, and the service life of the resistance-capacitance unit is prolonged.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims (6)

1. The utility model provides a dedicated explosion chamber of switching reactor which characterized in that: comprises an arc extinguish chamber unit (1), a rapid switch-on unit (2) and a resistance-capacitance unit (3) which are arranged in sequence,

the arc extinguish chamber unit (1) comprises a first insulating support cylinder (5) and a first moving contact unit (6), wherein one end of the first insulating support cylinder is fixedly connected with a first fixed contact unit, the first moving contact unit is slidably arranged in the first insulating support cylinder, the other end of the first insulating support cylinder is fixedly connected with the quick switching-on unit, the first fixed contact unit comprises a fixedly arranged first fixed contact, the first moving contact unit comprises a first moving contact and a transmission pull rod, the first moving contact is axially opposite to the first fixed contact, the transmission pull rod is fixedly connected with the first moving contact, and the transmission pull rod is fixedly connected with an insulating pull rod (12) connected with an operating mechanism;

the rapid switching-on unit (2) comprises a second insulating support cylinder (8) with one end fixedly connected with the first insulating support cylinder (5), a fixed seat (49) fixedly connected with the other end of the second insulating support cylinder and a second moving contact (30) in sliding connection with the second insulating support cylinder, a transmission device which is connected with the transmission pull rod and drives the second moving contact to move along the axial direction is arranged in the second insulating support cylinder, a pressable fixed contact which is opposite to the second moving contact along the axial direction is arranged in the fixed seat, and the pressable fixed contact is electrically connected with the capacitance resistance unit.

2. The special arc extinguish chamber for the switching reactor according to claim 1, which is characterized in that: the transmission device comprises a transmission shaft (56) fixedly connected with the transmission pull rod and a crank arm (55) with one end hinged to the second insulating support cylinder (8), the other end of the crank arm (55) is hinged to a connecting arm (54), the connecting arm (54) is hinged to the second moving contact (30), one side, away from the connecting arm, of the crank arm is connected with the second insulating support cylinder (8) through a brake separating spring, a guide wheel (28) is installed towards one end of the crank arm on the transmission shaft (56), and a step opposite to the guide wheel is arranged on the side face of the crank arm.

3. The special arc extinguish chamber for the switching reactor according to claim 2, which is characterized in that: a partition board is arranged in the second insulating supporting cylinder (8), and a guide hole matched with the second moving contact is formed in the partition board.

4. The special arc extinguish chamber for the switching reactor according to claim 1, which is characterized in that: the resistance-capacitance unit comprises a conductive plate (36) fixedly connected with a fixed seat (49), the pressable static contact penetrates through the conductive plate and is in contact with the conductive plate, and the conductive plate and the pressable static contact are further connected through a second conductive spring (47).

5. The special arc extinguish chamber for the switching reactor according to claim 4, which is characterized in that: the pressable static contact is in sliding connection with the fixed seat, a compression spring (48) is sleeved on the pressable static contact, one end of the compression spring is propped against the conductive plate, and the other end of the compression spring is propped against a limiting table arranged on the pressable static contact.

6. The special arc extinguish chamber for the switching reactor according to claim 1, which is characterized in that: the resistance-capacitance unit comprises a current-conducting plate (36) and a first fixing plate (41) which are fixedly connected through an insulating plate (44), an insulating rod (39) is arranged on the current-conducting plate (36) and the first fixing plate (41) in a penetrating mode, an adjusting block (37), a first pressing block (46), a second pressing block (38) and a compression spring (40) are sequentially sleeved on the insulating rod between the current-conducting plate and the first fixing plate, a plurality of resistance discs which are sleeved on the insulating rod are further arranged between the first pressing block (46) and the second pressing block (38), the resistance discs are connected with the first fixing plate through conducting wires, and the first fixing plate is connected with a grounding fixing plate (43) through a capacitor (42).

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