CN216120164U

CN216120164U - Quick arc extinguishing device for grounding switch of high-voltage switch cabinet

Info

Publication number: CN216120164U
Application number: CN202122805057.7U
Authority: CN
Inventors: 张忠志; 刘辉; 赵海洋
Original assignee: Jinzhou Zhongrui Electric Appliance Equipment Co ltd
Current assignee: Jinzhou Zhongrui Electric Appliance Equipment Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-22
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a high-voltage switch cabinet grounding knife rapid arc quenching device, which comprises a high-voltage switch cabinet mechanism, a movable switch mechanism and a rapid return mechanism, wherein the high-voltage switch cabinet mechanism comprises a cabinet body and an inner gear ring, a bottom plate is arranged below the cabinet body, a ground wire ceramic plate is uniformly arranged on the surface of the top of the bottom plate, a ground wire connecting plate is arranged in the ground wire ceramic plate and penetrates through the surface of the top of the ground wire ceramic plate, a clamping plate is arranged on one side of the ground wire connecting plate, the ground wire ceramic plate is arranged above the ground wire ceramic plate, the rapid return mechanism comprises a rotating shaft and an extension rod, mounting isolation plates are symmetrically arranged on the top of the bottom plate, and the rotating shaft is arranged between the two mounting isolation plates through a bearing. The current is switched off at the fastest speed.

Description

Quick arc extinguishing device for grounding switch of high-voltage switch cabinet

Technical Field

The utility model belongs to the technical field of high-voltage switch cabinets, and particularly relates to a quick arc quenching device for a grounding switch of a high-voltage switch cabinet.

Background

The high-voltage switch cabinet is used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and plays roles of on-off, control or protection and the like. The high-voltage switch cabinet is used as an electric appliance product with the voltage grade of 3.6kV to 550kV, a high-voltage isolating switch, a grounding switch, a high-voltage load switch, a high-voltage automatic reclosing and sectionalizing device, a high-voltage operating mechanism, a high-voltage explosion-proof power distribution device, a high-voltage switch cabinet and the like. The high-voltage switch cabinet is compact in interior and narrow in space, and is not easy to enter the interior for installing a grounding wire. Along with the reduction of the manufacturing cost, most manufacturers integrate the grounding knife switch in the switch cabinet so as to be convenient for users to replace a grounding wire to arrange safety measures when overhauling the switch cabinet, and meanwhile, the five-prevention measures are adopted, so that the occurrence of manual misoperation accidents can be effectively avoided, and the safety switch cabinet is also very favorable for personal safety. Because the current and voltage of internal connection are great, the switch can not artifical direct contact again, when utilizing drive mechanism to realize opening and shutting to the switch, the speed of opening and shutting is slower, will lead to producing electric arc in the instant of switching off, and high-voltage arc's direction is uncontrollable, and powerful electric arc can influence the use of other inside components of cubical switchboard, can lead to the inside spark that produces of cubical switchboard even, brings the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a quick arc quenching device for a grounding switch of a high-voltage switch cabinet, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-voltage switch cabinet grounding knife rapid arc extinguishing device comprises a high-voltage switch cabinet mechanism, a movable switch mechanism and a rapid return mechanism, wherein the high-voltage switch cabinet mechanism comprises a cabinet body and an inner gear ring, a bottom plate is arranged below the cabinet body, a ground wire ceramic plate is uniformly arranged on the surface of the top of the bottom plate, a ground wire connecting plate is arranged in the ground wire ceramic plate and penetrates through the surface of the top of the ground wire ceramic plate, a clamping plate is arranged on one side of the ground wire connecting plate and is arranged above the ground wire ceramic plate, the rapid return mechanism comprises a rotating shaft and an extension rod, mounting isolation plates are symmetrically arranged on the top of the bottom plate, a rotating shaft is arranged between the two mounting isolation plates through a bearing and penetrates through a main body of the mounting isolation plates, a first conical tooth is arranged at one end of the rotating shaft, the rapid return mechanism comprises a main shaft and a tooth rod, the utility model discloses a cabinet body, including cabinet body main part, main shaft, mount table, first toper tooth, the inside hexagonal groove of main shaft other end surface, the internal portion of cabinet is arranged in to the main shaft, the second toper tooth, the second preferably, mount table internally mounted has the ring gear, the main shaft runs through the ring gear, inside spout B of having seted up of main shaft, the inside slidable mounting of spout B has the slide bar, hexagonal inslot portion is arranged in to slide bar one end, the inside activity inner chamber of having seted up of main shaft, the activity inner chamber link up with spout B is inside, the slide bar runs through movable inner chamber, open groove has been seted up to the main shaft arc surface, open groove link up with movable inner chamber is inside.

Preferably, the slide bar arc surface is provided with a connecting rod through a pin shaft, the connecting rod is arranged in the movable inner cavity, one end of the connecting rod departing from the slide bar is provided with a toothed bar through a pin shaft, and the toothed bar penetrates through the open groove.

Preferably, the toothed bar is meshed with the inner gear ring, a limiting spring is mounted inside the sliding groove B, one end of the limiting spring is in contact with the end of the sliding bar, and the other end of the limiting spring is in contact with the inner wall of the sliding groove B.

Preferably, the rotating shaft circular arc surface is uniformly provided with connecting pieces, a knife switch is installed on the surface of each connecting piece through a bolt, one end of each knife switch, which is far away from each connecting piece, is provided with a clamping groove, the clamping grooves are matched with the clamping plates in size, and a plurality of linkage rods are installed between the connecting pieces.

Preferably, the surface of the connecting piece is provided with a boss, the boss is perpendicular to the knife switch, and two installation isolation plates are provided with installation pipes through bearings.

Preferably, installation pipe surface symmetry is provided with the dead lever, the inside spout A of having seted up of dead lever, extension rod one end is provided with the slider, slider slidable mounting is inside spout A, the extension rod runs through spout A, the one end that the extension rod deviates from the dead lever is installed on the boss through the round pin axle.

Preferably, the surface of the extension rod is sleeved with a return spring, one end of the return spring is in contact with the sliding block, and the other end of the return spring is in contact with the inner wall of the sliding groove A.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a switch cabinet grounding knife rapid arc quenching device, which is characterized in that at the moment when a grounding knife is opened, a spring stores force to realize instantaneous opening when the grounding knife is released to be closed, current is cut off at the fastest speed, the distance between contacts is enlarged at the moment when the current passes through a zero value, when the voltage between the contacts is not enough to break down the distance between the contacts, an electric arc cannot be ignited, the higher the separation speed of the contacts is, the faster the electric arc is quenched, and the danger is prevented from occurring at the moment when the grounding knife is opened and closed.

Drawings

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

FIG. 2 is a longitudinal left sectional view of the cabinet of the present invention;

FIG. 3 is a longitudinal left cross-sectional view of a sizing rod of the present invention;

FIG. 4 is an enlarged view of area A of FIG. 2 according to the present invention.

Fig. 5 is a schematic diagram of a ground wire connection plate structure according to the present invention.

In the figure: 1. a high voltage switchgear mechanism; 101. a cabinet body; 102. a base plate; 103. a ground wire ceramic wafer; 104. a ground wire connecting plate; 105. clamping a plate; 106. an installation table; 107. an inner gear ring; 2. a movable switch mechanism; 201. installing an isolation plate; 202. a rotating shaft; 203. a first conical tooth; 204. a connecting member; 205. a knife switch; 206. a card slot; 207. a boss; 208. a linkage rod; 209. installing a pipe; 210. fixing the rod; 211. a chute A; 212. an extension rod; 213. a slider; 214. a return spring; 3. a quick return mechanism; 301. a main shaft; 302. a second tapered tooth; 303. a hexagonal groove; 304. a movable inner cavity; 305. a chute B; 306. opening the groove; 307. a slide bar; 308. a connecting rod; 309. a rack bar; 310. and a limiting spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: a high-voltage switch cabinet grounding knife rapid arc quenching device comprises a high-voltage switch cabinet mechanism 1, a movable switch mechanism 2 and a rapid return mechanism 3, wherein the high-voltage switch cabinet mechanism 1 comprises a cabinet body 101 and an inner gear ring 107, a bottom plate 102 is arranged below the cabinet body 101, a ground wire ceramic plate 103 is uniformly arranged on the top surface of the bottom plate 102, a ground wire connecting plate 104 is arranged in the ground wire ceramic plate 103, the ground wire connecting plate 104 penetrates through the top surface of the ground wire ceramic plate 103, a clamping plate 105 is arranged on one side of the ground wire connecting plate 104, the ground wire ceramic plate 103 is arranged above the ground wire ceramic plate 103, the rapid return mechanism 3 comprises a rotating shaft 202 and an extension rod 212, mounting isolation plates 201 are symmetrically arranged on the top of the bottom plate 102, the rotating shaft 202 is mounted between the two mounting isolation plates 201 through a bearing, the rotating shaft 202 penetrates through the main body of the mounting isolation plates 201, a first conical tooth 203 is mounted at one end of the rotating shaft 202, the rapid return mechanism 3 comprises a main shaft 301 and a tooth rod 309, a mounting table 106 is arranged on one side surface of the inside of the main body of the cabinet body 101, a main shaft 301 is mounted inside the mounting table 106 through a bearing, the main shaft 301 penetrates through the mounting table 106 and the cabinet body 101, a first conical tooth 203 is mounted at one end of the main shaft 301, a hexagonal groove 303 is formed in the other end surface of the main shaft 301, a second conical tooth 302 is arranged inside the cabinet body 101, second preferred, an inner gear ring 107 is mounted inside the mounting table 106, the main shaft 301 penetrates through the inner gear ring 107, a sliding groove B305 is formed inside the main shaft 301, a sliding rod 307 is slidably mounted inside the sliding groove B305, one end of the sliding rod 307 is arranged inside the hexagonal groove 303, a movable inner cavity 304 is formed inside the main shaft 301, the movable inner cavity 304 is communicated with the sliding groove B305, the sliding rod 307 penetrates through the movable inner cavity 304, an open groove 306 is formed in an arc surface of the main shaft 301, and the open groove 306 is communicated with the movable inner cavity 304.

In order to ensure that the toothed bar 309 is driven to extend by the elastic force of the limiting spring 310 under the state that the sliding bar 307 is not pressed, so that the toothed bar 309 is matched with the inner gear ring 107 to achieve the purpose of self-locking, in the embodiment, a connecting rod 308 is installed on the circular arc surface of the sliding bar 307 through a pin shaft, the connecting rod 308 is arranged in the movable inner cavity 304, one end of the connecting rod 308, which is far away from the sliding bar 307, is provided with the toothed bar 309 through the pin shaft, the toothed bar 309 penetrates through the open groove 306, the toothed bar 309 is meshed with the inner gear ring 107, the limiting spring 310 is installed in the sliding groove B305, one end of the limiting spring 310 is contacted with the end of the sliding bar 307, and the other end of the limiting spring 310 is contacted with the inner wall of the sliding groove B305.

In order to enable the clamping groove 206 to achieve the largest-area contact of the clamping plate 105, and enable current to smoothly enter the ground wire connecting plate 104 through the knife switch 205, in this embodiment, preferably, the arc surface of the rotating shaft 202 is uniformly provided with the connecting pieces 204, the knife switch 205 is installed on the surface of the connecting pieces 204 through bolts, the clamping groove 206 is formed in one end of the knife switch 205 departing from the connecting pieces 204, the clamping groove 206 is matched with the clamping plate 105 in size, and the linkage rods 208 are installed between the connecting pieces 204.

In order to simultaneously drive the knife switch 205 and the boss 207 to rotate in the same direction by rotating the connecting member 204, so that the elastic force of the return spring 214 can directly act on the rotating shaft 202, in this embodiment, preferably, the boss 207 is arranged on the surface of the connecting member 204, the boss 207 is arranged perpendicular to the knife switch 205, and the mounting pipe 209 is mounted between the two mounting isolation plates 201 through a bearing.

For guaranteeing that return spring 214 can hold power when closing a floodgate, store power, release original power of storing in the twinkling of an eye when opening a floodgate, realize the effect of express delivery outage then, wherein dead lever 210 and extension rod 212 all adopt the material that does not conduct, installation pipe 209 can guarantee that dead lever 210 takes place certain rotation, in this embodiment, installation pipe 209 surface symmetry is provided with dead lever 210, inside spout A211 of having seted up of dead lever 210, extension rod 212 one end is provided with slider 213, slider 213 slidable mounting is inside spout A211, extension rod 212 runs through spout A211, extension rod 212 deviates from the one end of dead lever 210 and installs on boss 207 through the round pin axle, extension rod 212 surface cover is equipped with return spring 214, return spring 214 one end and slider 213 contact, and the other end and spout A211 inner wall contact.

The working principle and the using process of the utility model are as follows: after the installation of the utility model, firstly, the installation fixing and the safety protection of the utility model are checked, then the utility model can be used, the ground wire connecting plate 104 penetrates through the bottom plate 102 and the ground wire ceramic plate 103 to be connected with the ground wire, the current enters and is firstly connected with the boss 207 in the middle, at the moment, the hexagonal wrench is utilized to rotate the main shaft 301, when the hexagonal wrench is inserted into the hexagonal groove 303, the sliding rod 307 is extruded to move inwards, the rotating main shaft 301 can drive the second conical tooth 302 to rotate, the second conical tooth 302 is meshed with the first conical tooth 203, the rotating shaft 202 can be driven to rotate, at the moment, the connecting piece 204 rotates, the switch blade 205 rotates towards one side of the ground wire connecting plate 104, so that the clamping groove 206 and the clamping plate 105 are clamped with each other and electrified, meanwhile, because the connecting piece 204 rotates, the boss 207 can be driven to rotate, the rotating direction can lead the boss 207 to be far away from the installation pipe 209, at this time, the extension rod 212 can be pulled to drive the sliding block 213 to slide in the sliding chute a211, the return spring 214 stores force, the hexagonal wrench can be pulled out after the switch is closed in place, at this time, although the return spring 214 pulls the extension rod 212 upwards, the device cannot rotate at this time, the hexagonal wrench leaves to make the sliding rod 307 lose the extrusion force, at this time, the sliding rod 307 returns, the toothed rod 309 can be pushed outwards under the limit of the opening groove 306 through the connecting rod 308 to be meshed with the inner gear ring 107, at this time, the second conical gear 302 cannot rotate, because the second conical gear 302 is meshed with the first conical gear 203, at this time, the rotating shaft 202 cannot rotate, when power needs to be cut off, the sliding rod 307 can be pushed inwards by using a tool, then the connecting rod 308 drives the toothed rod 309 to move inwards to be disengaged from the inner gear ring 107, at this time, the main shaft 301 will not be restricted, and the rotating shaft 202 is also disengaged from the restriction when the main shaft 301 is disengaged, at this moment, the elastic force of the return spring 214 can instantaneously recover the slider 213, and then the extension rod 212 is recovered, so that the connecting piece 204 rotates to separate the clamping groove 206 from the clamping plate 105, and in the separation process, the elastic force of the return spring 214 is utilized to continue returning, so that the quick power failure can be realized, the electric arc generated by the power failure is quickly extinguished, and even the power failure state of the electric arc-free belt is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high tension switchgear earthing switch device of putting out arc fast, includes high tension switchgear mechanism (1), movable switch mechanism (2) and quick return mechanism (3), its characterized in that: the high-voltage switch cabinet mechanism (1) comprises a cabinet body (101) and an inner gear ring (107), a bottom plate (102) is arranged below the cabinet body (101), ground wire ceramic pieces (103) are uniformly arranged on the surface of the top of the bottom plate (102), a ground wire connecting plate (104) is arranged inside the ground wire ceramic pieces (103), the ground wire connecting plate (104) penetrates through the surface of the top of the ground wire ceramic pieces (103), a clamping plate (105) is arranged on one side of the ground wire connecting plate (104), the ground wire ceramic pieces (103) are arranged above the ground wire ceramic pieces (103), the quick return mechanism (3) comprises a rotating shaft (202) and an extension rod (212), installation isolation plates (201) are symmetrically arranged on the top of the bottom plate (102), the rotating shaft (202) is installed between the two installation isolation plates (201) through a bearing, and the rotating shaft (202) penetrates through the main body of the installation isolation plates (201), first toper tooth (203) is installed to pivot (202) one end, quick return mechanism (3) are including main shaft (301) and ratch (309), the inside side surface of cabinet body (101) main part is provided with mount table (106), main shaft (301) are installed inside mount table (106) through the bearing, just mount table (106) and cabinet body (101) are run through to main shaft (301), first toper tooth (203) is installed to main shaft (301) one end, just hexagonal groove (303) have been seted up on main shaft (301) other end surface, and inside cabinet body (101) were arranged in to second toper tooth (302), second toper tooth (302) and first toper tooth (203) meshing.

2. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 1, characterized in that: the utility model discloses a six-angle groove (303) is arranged in installing platform (106), mount table (106) internally mounted has ring gear (107), main shaft (301) run through ring gear (107), main shaft (301) are inside to have seted up spout B (305), spout B (305) inside slidable mounting has slide bar (307), inside hexagonal groove (303) is arranged in to slide bar (307) one end, movable inner chamber (304) have been seted up to main shaft (301) inside, movable inner chamber (304) and spout B (305) are inside to be link up, slide bar (307) run through movable inner chamber (304), open groove (306) have been seted up to main shaft (301) arc surface, open groove (306) and the inside link up of movable inner chamber (304).

3. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 2, characterized in that: a connecting rod (308) is installed on the arc surface of the sliding rod (307) through a pin shaft, the connecting rod (308) is arranged in the movable inner cavity (304), a toothed bar (309) is installed at one end, deviating from the sliding rod (307), of the connecting rod (308) through the pin shaft, and the toothed bar (309) penetrates through the open groove (306).

4. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 3, characterized in that: the gear rod (309) and the inner gear ring (107) are meshed with each other, a limiting spring (310) is installed inside the sliding groove B (305), one end of the limiting spring (310) is in contact with the end of the sliding rod (307), and the other end of the limiting spring (310) is in contact with the inner wall of the sliding groove B (305).

5. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 1, characterized in that: the arc surface of the rotating shaft (202) is uniformly provided with connecting pieces (204), the surface of each connecting piece (204) is provided with a knife switch (205) through a bolt, one end of each knife switch (205) departing from the corresponding connecting piece (204) is provided with a clamping groove (206), the clamping grooves (206) are matched with the clamping plates (105) in size, and a plurality of linkage rods (208) are arranged between the connecting pieces (204).

6. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 5, characterized in that: the surface of the connecting piece (204) is provided with a boss (207), the boss (207) is perpendicular to the knife switch (205), and two installation pipes (209) are installed between the installation isolation plates (201) through bearings.

7. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 6, characterized in that: installation pipe (209) surface symmetry is provided with dead lever (210), spout A (211) have been seted up to dead lever (210) inside, extension rod (212) one end is provided with slider (213), slider (213) slidable mounting is inside spout A (211), extension rod (212) run through spout A (211), the one end that extension rod (212) deviate from dead lever (210) is installed on boss (207) through the round pin axle.

8. The high-voltage switch cabinet grounding switch rapid arc quenching device according to claim 7, characterized in that: extension rod (212) surface cover is equipped with return spring (214), return spring (214) one end and slider (213) contact, and the other end and spout A (211) inner wall contact.