CN118073129A

CN118073129A - Voltage fluctuation resistant quick response vacuum switch

Info

Publication number: CN118073129A
Application number: CN202410411647.7A
Authority: CN
Inventors: 孙珂; 李兴朝; 周宁
Original assignee: Bofang Electric Co ltd
Current assignee: Bofang Electric Co ltd
Priority date: 2024-04-08
Filing date: 2024-04-08
Publication date: 2024-05-24
Anticipated expiration: 2044-04-08

Abstract

The invention discloses a voltage fluctuation resistant quick response vacuum switch, which relates to the technical field of vacuum switches and comprises a shell, wherein a contact assembly is arranged in the shell, an auxiliary assembly is arranged on the upper side of the interior of the shell, heat dissipation assemblies are symmetrically arranged on two sides of the bottom of the shell, the contact assembly comprises a movable conducting rod and a static conducting rod, an insulating seat is arranged at one end of the movable conducting rod, which is positioned in the shell, one end of the insulating seat is fixedly penetrated with a first contact rod, a first movable contact is arranged at the bottom end of the first contact rod, a second contact rod is penetrated at the other end of the insulating seat, and a second movable contact is arranged at the bottom end of the second contact rod. The invention can be switched to the standby power supply rapidly when voltage fluctuation occurs, so that the high-power equipment is prevented from being powered off, a heat dissipation effect can be provided, high temperature is prevented from occurring inside, in addition, the contact surface between the contacts can be detected and maintained after long-time use, and the normal use is prevented from being influenced.

Description

Voltage fluctuation resistant quick response vacuum switch

Technical Field

The invention relates to the technical field of vacuum switches, in particular to a voltage fluctuation resistant quick response vacuum switch.

Background

The vacuum switch is a switch device using vacuum as insulating and arc-extinguishing medium, its electrode is placed in sealed vacuum environment for implementing circuit breaking, and the vacuum switch has excellent arc-extinguishing function, and its on-off process is stable and reliable, and the discharge arc and steam are not leaked out, and because its medium is vacuum, the vacuum switch has higher safety compared with traditional oil circuit breaker, and the danger of fire and explosion is avoided.

The patent application number 201880018969.8 discloses a vacuum switch comprising an insulating housing, made of a suitable insulating material, two conductive caps, and a first contact and a second contact, each of which is firmly fixed at an opening of the insulating housing to form a sealed vacuum chamber, the first contact and the second contact being movable relative to each other inside the sealed vacuum chamber and between an open position, in which the first contact and the second contact are not in contact, and a closed position, in which the first contact and the second contact are in contact, the vacuum switch and the first and second contacts being designed such that a high short-circuit current passes through the contacts in the closed position, but remain in the closed position in which the triggering response is slow in the event of high-power voltage fluctuations during use, and cannot be switched to a standby power supply in time, easily resulting in a loss of power and data of the high-power equipment.

And when using, the inside heat that can produce of vacuum switch, and then influence the life of inside spare part to can lead to inside pressure unusual and influence normal work, in addition, after long-time use, can take place to ablate between the contact, lead to the contact surface roughness, influence the normal contact between the contact.

Disclosure of Invention

The invention aims to overcome the existing defects, provides the anti-voltage fluctuation quick response vacuum switch, quickly switches to a standby power supply when voltage fluctuation occurs, prevents high-power equipment from being powered off, can provide a heat dissipation effect, prevents high temperature from occurring inside, can detect and maintain contact surfaces between contacts after long-time use, avoids influencing normal use, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an anti voltage fluctuation quick response vacuum switch, includes the casing, the inside of casing is equipped with the contact assembly, the inside upside of casing is equipped with auxiliary assembly, the bottom bilateral symmetry of casing is equipped with the radiator unit;

The contact assembly comprises a movable conducting rod and a static conducting rod, wherein an insulating seat is arranged at one end of the movable conducting rod, which is positioned in the shell, a first contact rod is fixedly penetrated through one end of the insulating seat, a first movable contact is arranged at the bottom end of the first contact rod, a second contact rod is penetrated through the other end of the insulating seat, a second movable contact is arranged at the bottom end of the second contact rod, and a reset spring is sleeved at the bottom position of the insulating seat;

The top of static conducting rod has cup jointed the static contact, the both sides of static contact are equipped with first contact block and second contact block respectively, the height of first contact block is less than the height of second contact block.

Preferably, both ends of the shell are respectively fixed and penetrate through an upper end seat and a lower end seat, a limit spring is arranged between the fixed contact and the lower end seat, a shielding cylinder is arranged in the middle of the inner side of the shell, a driving mechanism is arranged at the top end of the shell, the top end of the movable conducting rod is fixedly connected with the output end of the driving mechanism, a fixed ring is arranged at the top of the inner side of the shell, a shielding cover is arranged in the middle of the fixed ring, and a first corrugated pipe is arranged between the shielding cover and the upper end seat.

Preferably, the top of moving the conducting rod is connected with outside main power supply electricity, move the conducting rod and run through the middle part of shield cover, the outside one end of static conducting rod is connected with outside load electricity, move the conducting rod activity and run through the middle part of upper end seat, the top side of first feeler lever pass through the conducting seat with move the conducting rod electric connection, reset spring's both ends respectively with insulating seat and second movable contact fixed connection, the inside first locking mechanism that is used for the locking of second feeler lever that is equipped with of insulating seat, the top side of second feeler lever is equipped with the butt joint seat, the side bottom of moving the conducting rod be equipped with the butt joint seat corresponds complex conductive column.

Preferably, the static conductive rod is fixedly penetrating through the middle part of the lower end seat, the static contact is electrically connected with the static conductive rod, the first contact block and the second contact block respectively correspond to the first moving contact and the second moving contact, and a second locking mechanism for locking the static contact is arranged on the static contact.

Preferably, the auxiliary assembly comprises a frame seat, a cylindrical seat is fixedly penetrated at one side of the frame seat corresponding to the first feeler lever, a connecting spring is arranged at the top of the cylindrical seat, an insulating plate is correspondingly arranged at the bottom of the cylindrical seat, a communicating seat corresponding to the second feeler lever is fixedly penetrated at the other side of the frame seat, and a binding post is integrally arranged at the side face of the shell.

Preferably, the frame seat is made of conductive materials, two sides of the frame seat are rotationally connected with the inner wall of the shell through insulating rods, the cylindrical seat is made of insulating materials, and the top end of the connecting spring is fixedly connected with the bottom surface of the shielding cover.

Preferably, the insulating board with the top fixed connection of first feeler lever, the intercommunication seat is electrically conductive material, terminal and outside stand-by power supply electric connection, be equipped with connecting wire between the terminal of inside one end of terminal and the terminal surface of frame seat.

Preferably, the heat dissipation assembly comprises heat conduction rods, the heat conduction rods symmetrically penetrate through two sides of the bottom of the shell in a movable mode, the second corrugated pipe is sleeved on one side, located inside the shell, of the heat conduction rods, and the abutting springs are sleeved on the positions, located in the second corrugated pipe, of the heat conduction rods.

Preferably, the outside one end of heat conduction pole is equipped with the heat-conducting plate, the side of heat-conducting plate evenly is equipped with the fin, the inside one end of heat conduction pole is equipped with the L shaped plate, the L shaped plate is the heat conduction material, the inside of L shaped plate evenly is equipped with wedge absorber plate, two upper and lower surfaces of L shaped plate all are equipped with evenly distributed's rubber piece.

Preferably, one end of the second corrugated pipe is closed and fixedly connected with the heat conducting rod, the other end of the second corrugated pipe is fixedly connected with the inner wall of the shell, a distance sensor is arranged on the inner end face of the second corrugated pipe, and two ends of the abutting spring are respectively fixedly connected with the end face of the second corrugated pipe and the inner wall of the shell.

Compared with the prior art, the invention has the following beneficial effects:

1. When the external controller detects that voltage fluctuation occurs, the external standby power supply is communicated with the binding post, locking of the second contact rod is released, the driving mechanism drives the movable conducting rod to move upwards to drive the first movable contact to move, the first movable contact is separated from the first contact block at first, the reset spring is reset gradually, meanwhile, the second movable contact still abuts against the second contact block, the conductive post is separated from the butt joint seat synchronously, the insulating plate abuts against the cylindrical seat to move upwards when the first contact rod moves upwards, the other end of the frame seat moves downwards, at the moment, the second movable contact still abuts against the second contact block, and therefore the external standby power supply can be conducted with external load equipment or electrical equipment quickly, and power failure of the external load equipment or electrical equipment is prevented.

2. According to the invention, when the contact surface is detected and maintained, the second locking mechanism does not lock the fixed contact, the movable conducting rod and the insulating plate are driven to upwards extrude the cylindrical seat, the connecting seat downwards extrudes the second movable contact to the bottommost end and then locks the second contact rod, the bottommost end of the second movable contact is enabled to be in contact with the second contact block by utilizing the driving mechanism, at the moment, the distance between the first contact block and the first movable contact is slightly larger than the height of the L-shaped plate, the second movable contact is enabled to push the second contact block to continuously move downwards, the first contact block is gradually contacted with the inclined surface of the wedge-shaped heat absorbing plate and enables the abutting spring to compress, when the top surface of the first contact block corresponds to the bottom surface of the L-shaped plate, the abutting spring enables the L-shaped plate and the rubber block to horizontally reciprocate between the first movable contact block and the first contact block, and the ablative substances protruding on the contact surface are removed.

3. According to the invention, when the contact surface of the second moving contact and the second contact block is detected and maintained, the second contact rod is locked, the locking of the fixed contact is released, the first moving contact and the second moving contact move downwards through the driving mechanism, the second moving contact pushes the second contact block to move downwards, when the top surface of the second contact block corresponds to the rubber block at the bottom of the L-shaped plate at the corresponding side, the second corrugated pipe and the corresponding abutting spring are compressed under the action of the wedge-shaped heat absorbing plate, the fixed contact is locked, the movable conducting rod is driven to move upwards again, and when the distance between the second contact block and the second moving contact is gradually increased to correspond to the height of the L-shaped plate, the L-shaped plate reciprocates between the second contact block and the second moving contact by the compressed abutting spring, and the opposite surfaces between the second contact block and the second moving contact are cleaned by the rubber blocks at the upper side and the lower side.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2B;

fig. 5 is a schematic view of the internal structure of the present invention.

In the figure: 1. a housing; 101. an upper end seat; 102. a lower end seat; 103. a shielding cylinder; 104. a driving mechanism; 105. a fixing ring; 106. a shield; 107. a first bellows; 2. a contact assembly; 201. a movable conductive rod; 202. an insulating base; 203. a first feeler lever; 204. a first moving contact; 205. a conductive base; 206. a second feeler lever; 207. a second moving contact; 208. a return spring; 209. a butt joint seat; 210. a conductive post; 211. a static conductive rod; 212. a stationary contact; 214. a first contact block; 215. a second contact block; 216. a limit spring; 3. an auxiliary component; 301. a frame base; 302. a cylinder seat; 303. a connecting spring; 304. an insulating plate; 305. a communication seat; 306. an insulating rod; 307. binding posts; 308. connecting wires; 4. a heat dissipation assembly; 401. a heat conduction rod; 402. a second bellows; 403. a heat conductive plate; 404. a heat sink; 405. a contact spring; 406. an L-shaped plate; 407. wedge-shaped heat absorbing plate; 408. rubber blocks.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-5, the invention provides a fast response vacuum switch capable of resisting voltage fluctuation, which comprises a shell 1, wherein an upper end seat 101 and a lower end seat 102 are respectively and fixedly penetrated at two ends of the shell 1, a shielding cylinder 103 is arranged in the middle of the inner side of the shell 1, the shielding cylinder 103 can prevent a large amount of metal vapor and liquid drops generated between contacts from splashing, the inner wall of the shell 1 is prevented from being polluted, the arc extinguishing and insulating capacity of the vacuum switch are improved, the working stability is improved, and a pressure detection module for detecting the vacuum degree is arranged in the shell 1.

The top of casing 1 is equipped with actuating mechanism 104, and actuating mechanism 104 is preferably electromagnetic drive, and actuating mechanism 201's top and actuating mechanism 104's output fixed connection, actuating mechanism 104 are used for controlling the extension and the shrink of actuating mechanism 201, and casing 1's inboard top is equipped with solid fixed ring 105, and gu fixed ring 105's middle part is equipped with shield cover 106 and is equipped with first bellows 107 between shield cover 106 and the upper end seat 101, and shield cover 106 is used for protecting the bellows, prevents that the electric arc resultant from splash to the bellows.

The inside of casing 1 is equipped with contact assembly 2, contact assembly 2 includes movable conducting rod 201 and static conducting rod 211, the top and the outside main power electric connection of movable conducting rod 201, the middle part of shield cover 106 is run through to movable conducting rod 201, the outside one end of static conducting rod 211 and outside load equipment or with electrical apparatus electric connection, movable conducting rod 201 activity is run through the middle part of upper end seat 101, the one end that movable conducting rod 201 is located inside casing 1 is equipped with insulating seat 202, the fixed first contact rod 203 that runs through of one end of insulating seat 202, first contact rod 203 is electrically conductive material, the top side of first contact rod 203 is through electrically conductive seat 205 and movable conducting rod 201 electric connection, the bottom of first contact rod 203 is equipped with first moving contact 204, first moving contact 204 is electrically conductive material, the other end of insulating seat 202 is run through and is equipped with second contact rod 206, second contact rod 206 is electrically conductive material, the top side of second contact rod 206 is equipped with butt joint seat 209, the side bottom of movable conducting rod 201 is equipped with and is electrically conductive material with the corresponding contact rod 210 and is electrically conductive rod 210 and is equipped with the first contact rod 210 and is electrically conductive rod 206 through the inside contact rod 206 of mutual locking contact rod 209, the even contact rod is equipped with the corresponding contact rod 210 and the inside is electrically conductive rod 209, the contact rod is connected with the inside is through the corresponding contact rod 209, the contact rod is electrically conductive rod is connected with the butt joint.

The second contact rod 206 is positioned at the bottom of the insulating base 202 and sleeved with a return spring 208, and two ends of the return spring 208 are fixedly connected with the insulating base 202 and the second movable contact 207 respectively.

The static conductive rod 211 is fixedly penetrating through the middle of the lower end seat 102, the top of the static conductive rod 211 is sleeved with the static contact 212, the static contact 212 is electrically connected with the static conductive rod 211, at this time, the static contact 212 is fixedly connected with the static conductive rod 211, a first contact block 214 and a second contact block 215 are respectively arranged on two sides of the static contact 212, the first contact block 214 and the second contact block 215 are made of conductive materials, the first contact block 214 and the second contact block 215 respectively correspond to the first moving contact 204 and the second moving contact 207, the height of the first contact block 214 is smaller than that of the second contact block 215, when the first moving contact 204 and the second moving contact 207 move downwards, the second moving contact 207 is firstly contacted with the second contact block 215, and relative movement is generated between the second contact rod 206 and the insulating seat 202.

When the vacuum switch is used, when the circuit is conducted, the driving mechanism 104 is used for driving the movable conducting rod 201 to move downwards, at the moment, the first locking mechanism does not lock the second contact rod 206, because the second contact block 215 is higher than the first contact block 214, the second movable contact 207 is firstly abutted against the second contact block 215, and at the moment, the fixed contact 212 is fixedly sleeved on the fixed conducting rod 211, so that the insulating base 202 moves downwards along the second contact rod 206, the reset spring 208 is compressed until the first movable contact 204 is completely abutted against the first contact block 214, at the moment, the joint of the inclined planes between the butt joint base 209 and the conducting column 210 is realized, the conduction between the movable conducting rod 201 and the fixed conducting rod 211 can be realized, and the arc generated in the conduction process is randomly extinguished by the vacuum environment in the shell 1.

When the pressure detection module in the shell 1 detects that the internal pressure is increased or reduced and normal breaking operation is performed, the first locking mechanism locks the second feeler lever 206, the driving mechanism 104 is utilized to drive the movable conducting rod 201 to move upwards, the first movable contact 204 and the second movable contact 207 can be separated from the first contact block 214 and the second contact block 215 respectively rapidly, the rapid breaking of the vacuum switch is realized, the first locking mechanism releases the locking of the second feeler lever 206 during separation, and the compressed reset spring 208 stretches and resets and drives the second movable contact 207 to stretch and reset.

In addition, when the external controller detects that voltage fluctuation occurs, such as power failure, overload and under-voltage, the external controller can rapidly open the circuit of the vacuum switch under the control of the driving mechanism 104 to realize self protection, but the external high-power equipment or electrical appliance is suddenly powered off, so that the equipment data is lost, so as to solve the problems:

The inside upside of casing 1 is equipped with auxiliary assembly 3, auxiliary assembly 3 includes frame seat 301, frame seat 301 is electrically conductive material, the both sides of frame seat 301 are all rotated with the inner wall of casing 1 through insulator spindle 306 and are connected, make the both ends of frame seat 301 round insulator spindle 306 up-and-down swing, the fixed cylindrical seat 302 that runs through in one side that corresponds of frame seat 301 and first feeler lever 203, cylindrical seat 302 is electrically insulating material, the top of cylindrical seat 302 is equipped with connecting spring 303, connecting spring 303 is used for realizing the reposition of cylindrical seat 302, connecting spring 303's top and shield 106's bottom fixed connection, cylindrical seat 302's bottom correspondence is equipped with insulation board 304, insulation board 304 and first feeler lever 203's top fixed connection, insulation board 304 makes the top of first feeler lever 203 be higher than the top of second feeler lever 206, the opposite side fixed the run through of frame seat 301 has the intercommunication seat 305 that corresponds with second feeler lever 206, the intercommunication seat 305 is electrically conductive material, realize electric conduction when the bottom and the top of intercommunication seat 305 is the second feeler lever 206, casing 1's side is integrative is equipped with 307, 307 and outside stand-by power supply electrical connection's top surface electrical connection, be equipped with sufficient length between terminal 301 and the inside terminal 308 of frame 301 is connected to the wire that makes the limited connection.

When the vacuum switch is used, when the vacuum switch is set to be in a passage state, the driving mechanism 104 is utilized to drive the movable conducting rod 201 to move downwards, at the moment, the first locking mechanism still does not lock the second contact rod 206 until the first movable contact 204 and the second movable contact 207 respectively collide with the first contact block 214 and the second contact block 215, at the moment, the reset spring 208 is in a compressed state, the butt joint seat 209 and the conducting column 210 are in butt joint, the vacuum switch is in a conducting state, and the static contact 212 is still fixedly sleeved at the top of the static conducting rod 211.

When the external controller detects that voltage fluctuation occurs, an instruction is sent to the driving mechanism 104 to enable the vacuum switch to be in an open-circuit state, meanwhile, an external standby power supply is communicated with the wiring terminal 307, so that the first locking mechanism releases locking of the second contact rod 206, the driving mechanism 104 receives the instruction to drive the movable conducting rod 201 to move upwards, meanwhile, the insulating base 202 drives the first contact rod 203 and the first movable contact 204 to move upwards, the first movable contact 204 is separated from the first contact block 214 firstly, the insulating base 202 moves upwards along the second contact rod 206, the reset spring 208 is reset gradually, meanwhile, the second movable contact 207 still abuts against the second contact block 215 under the reverse acting force of the reset spring 208, the second contact rod 206 does not move upwards before the reset spring 208 is reset completely, but the conducting column 210 is separated from the contact base 209 firstly, and the second movable contact 207 and the movable conducting rod 201 are in the open-circuit state.

When the first contact rod 203 moves upward, the insulating plate 304 pushes the cylindrical seat 302 to move upward due to the action of the insulating plate 304, the connecting spring 303 is compressed, meanwhile, one end of the frame seat 301 close to the binding post 307 moves upward, the other end of the frame seat 301 drives the connecting seat 305 to move downward, and the return spring 208 is still not completely reset, that is, the second moving contact 207 still pushes against the second contact block 215, and the external standby power can be quickly conducted with the external load device or electrical appliance in a very short time through the binding post 307, the connecting wire 308, the frame seat 301, the connecting seat 305, the second contact rod 206, the second moving contact 207, the second contact block 215 and the static conductive rod 211, so that the external load device or electrical appliance can be prevented from being powered off, and the speed of the upward movement of the moving conductive rod 201 is driven by the driving mechanism 104 at a high speed to be insufficient to power off the external load device or electrical appliance before being communicated with the standby power.

It should be noted that, in order to adapt the present vacuum switch to normal open circuit, when the present vacuum switch is opened under other conditions, the driving mechanism 104 drives the movable conductive rod 201 to move upwards by a distance insufficient to make the top end of the first contact rod 203 collide with the cylindrical seat 302, and in this process, the present vacuum switch operates in the same manner as the above-mentioned manner.

In addition, can produce more heat when this vacuum switch normally works, lead to casing 1 inside temperature to rise, influence normal work, in order to solve above-mentioned problem:

The bottom bilateral symmetry of casing 1 is equipped with radiator unit 4, radiator unit 4 includes heat conduction rod 401, the bottom both sides of heat conduction rod 401 symmetry activity run through casing 1, second bellows 402 has been cup jointed to the inside one side of heat conduction rod 401 position in casing 1, the one end of second bellows 402 is sealed and with heat conduction rod 401 fixed connection, the other end of second bellows 402 and the inner wall fixed connection of casing 1, second bellows 402 is used for sealing between heat conduction rod 401 and casing 1, the inside terminal surface of second bellows 402 is equipped with distance sensor, distance sensor is used for monitoring the travel distance of second bellows 402 terminal surface, the position that heat conduction rod 401 is located second bellows 402 has cup jointed conflict spring 405, the both ends of conflict spring 405 respectively with the terminal surface of second bellows 402 and the inner wall fixed connection of casing 1, conflict spring 405 is used for realizing the reset to second bellows 402.

The outside one end of heat conduction pole 401 is equipped with heat conduction board 403, the side of heat conduction board 403 evenly is equipped with fin 404, heat conduction board 403 and fin 404 are arranged in dispersing the heat of discharging in the heat conduction pole 401, reach inside cooling's purpose, the inside one end of heat conduction pole 401 is equipped with L shaped plate 406, L shaped plate 406 is the heat conduction material, the inside of L shaped plate 406 evenly is equipped with wedge absorber plate 407, wedge absorber plate 407 is used for absorbing the inside heat of casing 1 and is conducted to the outside of casing 1 by heat conduction pole 401, two upper and lower surfaces of L shaped plate 406 all are equipped with evenly distributed's rubber piece 408.

When in use, the high-temperature heat in the shell 1 is absorbed by the wedge-shaped heat absorbing plate 407 and the L-shaped plate 406, then is conducted to the heat conducting plate 403 and the heat radiating fins 404 through the heat conducting rod 401 and is radiated into the outside air, so that the heat radiation in the shell 1 is realized.

In addition, after long-term use, the contact surfaces between the first moving contact 204 and the first contact block 214 and the second moving contact 207 and the second contact block 215 are ablated by the arc, so that the contact surfaces between the contacts and the contact blocks are uneven, and the contact effect is affected, therefore, the contact surfaces need to be periodically detected and maintained, and in order to solve the above problems:

The fixed contact 212 is provided with a second locking mechanism for locking the fixed contact 212, and at the moment, the fixed contact 212 is movably sleeved on the static conductive rod 211, so that the fixed contact 212 slides along the static conductive rod 211, and the fixed contact 212 is locked and positioned through the second locking mechanism.

A limiting spring 216 is arranged between the fixed contact 212 and the lower end seat 102, and the limiting spring 216 realizes the reset of the fixed contact 212.

When the contact surface is detected and maintained, the whole circuit is in an open circuit state, external load equipment and an electric appliance stop working, at the moment, the second locking mechanism does not lock the fixed contact 212, the driving mechanism 104 drives the movable conducting rod 201 to move upwards, the insulating plate 304 presses the cylindrical seat 302 upwards, meanwhile, the communicating seat 305 at the other end of the frame seat 301 presses the second contact rod 206 downwards, the second movable contact 207 moves downwards, after the second movable contact 207 moves downwards to the bottommost end, the first locking mechanism locks and fixes the second contact rod 206, the second movable contact 207 keeps the lowest position, the driving mechanism 104 is started again to drive the movable conducting rod 201 to move downwards, the bottommost end of the second movable contact 207 is abutted against the second contact block 215, at the moment, the distance between the first contact block 214 and the first movable contact 204 is slightly larger than the distance between the topmost end and the bottommost end of the L-shaped plate 406, and continuously enabling the second movable contact 207 to push the second contact block 215 to move downwards, enabling the first contact block 214 to gradually contact with the inclined surface of the wedge-shaped heat absorbing plate 407, further pushing the heat conducting rod 401 to move towards the outside of the shell 1 through the L-shaped plate 406, enabling the second corrugated tube 402 and the abutting spring 405 to be compressed, stopping when the top surface of the first contact block 214 just reaches the bottom surface of the L-shaped plate 406, enabling the limiting spring 216 to be compressed, enabling the second corrugated tube 402 and the abutting spring 405 to drive the L-shaped plate 406 to reset rapidly, namely enabling rubber blocks 408 on the top surface and the bottom surface of the L-shaped plate 406 to move relatively with the bottom surface of the first movable contact 204 and the top surface of the first contact block 214 respectively, enabling the L-shaped plate 406 to horizontally reciprocate between the first contact block 214 and the first movable contact 204 under the action of the abutting spring 405, removing the ablative substances attached to the bottom surface of the first moving contact 204 and the top surface of the first contact block 214, when the bottom surface of the first moving contact 204 and the top surface of the first contact block 214 are recessed in a large area, the slightly extruded rubber block 408 stretches into the recess, so that the L-shaped plate 406 is blocked, at the moment, the distance sensor detects that the second corrugated tube 402 is not moved any more, more recesses are actively judged to appear on the bottom surface of the first moving contact 204 and the top surface of the first contact block 214, and at the moment, workers are reminded to stop using and replace.

When the L-shaped plate 406 is required to reset, as the top edges of the first contact block 214 and the second contact block 215 are provided with conical surfaces, under the reaction of the limiting spring 216, the conical surfaces correspond to the conical surfaces when the L-shaped plate 406 is stationary, so that the conical surfaces are matched with the bottom end surfaces of the L-shaped plate 406, the first contact block 214 can move upwards and simultaneously the L-shaped plate 406 is extruded to move to the outer side of the shell 1, and when the bottom end surfaces of the L-shaped plate 406 completely pass through the conical surfaces, the reset of the first contact block 214 can be realized.

When the opposite surfaces of the second movable contact 207 and the second contact block 215 are detected and maintained, the first locking mechanism locks the second contact rod 206 at the initial position, the second locking mechanism releases the locking of the fixed contact 212, the driving mechanism 104 is used for driving the movable conducting rod 201 to move downwards, so that the first movable contact 204 and the second movable contact 207 move downwards, the second movable contact 207 firstly props against the second contact block 215 and pushes the second contact block 215 to move downwards, the top surface of the second contact block 215 moves to correspond to the rubber block 408 at the bottom of the L-shaped plate 406 at the corresponding side, at the moment, the L-shaped plate 406 is pressed to the outer side of the shell 1 by the second contact block 215, the second corrugated pipe 402 and the corresponding interference spring 405 are compressed, at the moment, the fixed contact 212 is locked on the fixed conducting rod 211 by the second locking mechanism, the position of the fixed contact 212 is kept fixed, then the driving mechanism 104 drives the movable conducting rod 201 to move upwards slowly, at this time, the distance between the second contact block 215 and the second movable contact 207 is gradually increased, when the distance between the second contact block 215 and the second movable contact 207 is slightly larger than the distance between the top end and the bottom end of the L-shaped plate 406 at the corresponding side, the compressed abutting spring 405 and the second bellows 402 reset rapidly, the L-shaped plate 406 reciprocates between the second contact block 215 and the second movable contact 207, and the reciprocating stroke is reduced until the L-shaped plate 406 is stationary, namely, the opposite surfaces between the second contact block 215 and the second movable contact 207 can be cleaned by the rubber blocks 408 at the upper side and the lower side of the L-shaped plate 406, in this process, when the opposite surfaces between the second contact block 215 and the second movable contact 207 are recessed in a large area, the rubber blocks 408 extend into the recess to cause the L-shaped plate 406 to be blocked rapidly and cannot reciprocate, at this time, the distance sensor detects that the movement of the end face of the second bellows 402 is stopped rapidly, so that it can be determined that a large area of recess appears on the opposite surface between the second contact block 215 and the second moving contact 207, that is, a worker is reminded of maintenance and replacement, and the resetting mode of the second contact block 215 is the same as the resetting operation mode of the first contact block 214, and the chamfer at the edge of the top surface of the second contact block 215 is also used for matching with the inclined plane of the wedge-shaped heat absorbing plate 407.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. The utility model provides an anti voltage fluctuation quick response vacuum switch which is characterized in that, including casing (1), the inside of casing (1) is equipped with contact assembly (2), the inside upside of casing (1) is equipped with auxiliary assembly (3), the bottom bilateral symmetry of casing (1) is equipped with radiator unit (4);

The contact assembly (2) comprises a movable conducting rod (201) and a static conducting rod (211), wherein an insulating seat (202) is arranged at one end of the movable conducting rod (201) positioned in the shell (1), a first contact rod (203) is fixedly penetrated through one end of the insulating seat (202), a first movable contact (204) is arranged at the bottom end of the first contact rod (203), a second contact rod (206) is penetrated through the other end of the insulating seat (202), a second movable contact (207) is arranged at the bottom end of the second contact rod (206), and a reset spring (208) is sleeved at the bottom position of the insulating seat (202) in a sleeved mode;

the top of static conducting rod (211) has cup jointed static contact (212), the both sides of static contact (212) are equipped with first contact block (214) and second contact block (215) respectively, the height of first contact block (214) is less than the height of second contact block (215).

2. The vacuum switch according to claim 1, wherein two ends of the housing (1) are respectively fixedly penetrated with an upper end seat (101) and a lower end seat (102), a limit spring (216) is arranged between the fixed contact (212) and the lower end seat (102), a shielding cylinder (103) is arranged in the middle of the inner side of the housing (1), a driving mechanism (104) is arranged at the top end of the housing (1), the top end of the movable conducting rod (201) is fixedly connected with the output end of the driving mechanism (104), a fixed ring (105) is arranged at the top of the inner side of the housing (1), a shielding cover (106) is arranged in the middle of the fixed ring (105), and a first corrugated pipe (107) is arranged between the shielding cover (106) and the upper end seat (101).

3. The vacuum switch of claim 1, wherein the top of the movable conducting rod (201) is electrically connected with an external main power supply, the movable conducting rod (201) penetrates through the middle of the shielding cover (106), one external end of the static conducting rod (211) is electrically connected with an external load, the movable conducting rod (201) movably penetrates through the middle of the upper end seat (101), the top side surface of the first contact rod (203) is electrically connected with the movable conducting rod (201) through a conducting seat (205), two ends of the return spring (208) are fixedly connected with an insulating seat (202) and a second movable contact (207) respectively, a first locking mechanism for locking the second contact rod (206) is arranged in the insulating seat (202), a butt seat (209) is arranged on the top side surface of the second contact rod (206), and a conducting column (210) corresponding to the butt seat (209) is arranged at the bottom of the side surface of the movable conducting rod (201).

4. The vacuum switch according to claim 2, wherein the static conductive rod (211) is fixedly penetrating through the middle part of the lower end seat (102), the static contact (212) is electrically connected with the static conductive rod (211), the first contact block (214) and the second contact block (215) respectively correspond to the first moving contact (204) and the second moving contact (207), and a second locking mechanism for locking the static contact (212) is arranged on the static contact (212).

5. A vacuum switch according to claim 3, wherein the auxiliary assembly (3) comprises a frame base (301), a cylindrical base (302) is fixedly penetrated on one side of the frame base (301) corresponding to the first feeler lever (203), a connecting spring (303) is arranged at the top of the cylindrical base (302), an insulating plate (304) is correspondingly arranged at the bottom of the cylindrical base (302), a communicating base (305) corresponding to the second feeler lever (206) is fixedly penetrated on the other side of the frame base (301), and a binding post (307) is integrally arranged on the side face of the shell (1).

6. The vacuum switch according to claim 5, wherein the frame base (301) is made of a conductive material, two sides of the frame base (301) are rotatably connected with the inner wall of the housing (1) through insulation rods (306), the cylindrical base (302) is made of an insulating material, and the top end of the connecting spring (303) is fixedly connected with the bottom surface of the shielding cover (106).

7. The vacuum switch of claim 5, wherein the insulating plate (304) is fixedly connected with the top end of the first contact rod (203), the communication seat (305) is made of a conductive material, the binding post (307) is electrically connected with an external standby power supply, and a connecting wire (308) is arranged between the inner end of the binding post (307) and the end face of the frame seat (301).

8. The vacuum switch according to claim 1, wherein the heat dissipation assembly (4) comprises a heat conduction rod (401), the heat conduction rod (401) symmetrically penetrates through two sides of the bottom of the shell (1) in a movable mode, a second corrugated pipe (402) is sleeved on one side, located inside the shell (1), of the heat conduction rod (401), and an abutting spring (405) is sleeved on the position, located inside the second corrugated pipe (402), of the heat conduction rod (401).

9. The vacuum switch of claim 8, wherein a heat conducting plate (403) is arranged at one end of the outer portion of the heat conducting rod (401), heat radiating fins (404) are uniformly arranged on the side face of the heat conducting plate (403), an L-shaped plate (406) is arranged at one end of the inner portion of the heat conducting rod (401), the L-shaped plate (406) is made of heat conducting materials, wedge-shaped heat absorbing plates (407) are uniformly arranged in the L-shaped plate (406), and rubber blocks (408) which are uniformly distributed are arranged on the upper surface and the lower surface of the L-shaped plate (406).

10. The vacuum switch according to claim 8, wherein one end of the second bellows (402) is closed and fixedly connected with the heat conducting rod (401), the other end of the second bellows (402) is fixedly connected with the inner wall of the housing (1), a distance sensor is arranged on the inner end face of the second bellows (402), and two ends of the abutting spring (405) are fixedly connected with the end face of the second bellows (402) and the inner wall of the housing (1) respectively.