CN117810841A - High-low voltage switch cabinet - Google Patents

Abstract

The invention discloses a high-low voltage switch cabinet, belonging to the technical field of electrical equipment; comprises an electric cabinet, a power-off device and a heat dissipation device; the electric cabinet comprises a cabinet body, wherein a lower partition plate and an upper partition plate are linearly and fixedly arranged in the cabinet body, the upper partition plate is positioned above the lower partition plate, the power-off device comprises three power-off mechanisms which are linearly arranged and two groups of power-on mechanisms, the two groups of power-on mechanisms are respectively arranged on the lower partition plate and the upper partition plate, each group of power-on mechanisms comprises three power-on assemblies which are identical in structure and are linearly arranged, and the power-off mechanisms are used for controlling the on-off of the power-on assemblies; the two radiating devices are symmetrically arranged on the cabinet body and used for radiating heat of the cabinet body. According to the invention, the heat dissipation and power-off work in the electric cabinet is automatically completed through the power-off mechanism and the heat dissipation mechanism, so that the structure is simple, and the operation is convenient.

Description

High-low voltage switch cabinet

Technical Field

The invention belongs to the technical field of electrical equipment, and particularly relates to a high-low voltage switch cabinet.

Background

The high-low voltage switch cabinet is a common switch cabinet arranged in a high-voltage chamber or a low-voltage chamber, is mainly used for long-distance electricity transmission or conversion of electric energy, plays an important role in the process of power generation, power transmission and power distribution of a power system, and is a convenient electrical cabinet.

When the high-low voltage switch cabinet is arranged in suburbs, due to the working relation, people cannot observe the situation of the scene at any time, especially when thunderstorm weather and the like are encountered, water is easily introduced into the switch cabinet, so that electric elements are damaged, even the whole circuit is damaged, and the problem of electricity safety of people is threatened in severe cases.

The Chinese patent with the publication number of CN115528560A discloses a high-low voltage switch cabinet, which comprises a cabinet body, rectangular strips, an adjusting device and a placing device, and can solve the problem that the existing switch cabinet is not easy to adjust when being installed, but the invention still cannot automatically cut off power under the condition that water accumulation occurs around the switch cabinet in thunderstorm weather, and simultaneously cannot automatically dissipate heat in order to ensure electricity safety. In order to solve the problems, the invention provides a high-low voltage switch cabinet.

Disclosure of Invention

Aiming at the technical problems, the invention adopts the following technical scheme: a high-low voltage switch cabinet comprises an electric cabinet, wherein a power-off device and a heat dissipation device are arranged on the electric cabinet.

The electric cabinet comprises a cabinet body and two cabinet doors symmetrically arranged on the cabinet body, wherein a lower partition plate and an upper partition plate are linearly and fixedly arranged in the cabinet body, and the upper partition plate is positioned above the lower partition plate.

The power-off device comprises three power-off mechanisms which are in linear arrangement and two groups of power-on mechanisms, the two groups of power-on mechanisms are respectively arranged on the lower partition board and the upper partition board, each group of power-on mechanisms comprises three power-on components which are in the same structure and in linear arrangement, and the power-off mechanisms are used for controlling the on-off of the power-on components.

The two radiating devices are symmetrically arranged on the cabinet body and used for radiating heat of the cabinet body.

Further, outage mechanism include cursory, cursory be located the below outside of the cabinet body, cursory and the one end fixed connection of slip post, the other end of slip post and the slide bar fixed connection who is located the internal portion of cabinet, slip post and slide bar all with cabinet body sliding fit, the slide bar on be provided with reset spring one between one end and the cabinet body that are connected with the slip post, reset spring one set establish in the outside of slip post, follow the length direction fixed mounting of slide bar have outage rack one and outage rack two, outage rack two be located the below of last baffle, outage rack one is located the below of baffle down.

Further, the power-off mechanism also comprises two linearly arranged central shafts, the two ends of the central shaft are respectively fixedly provided with a first cylindrical gear and a second cylindrical gear, one central shaft is positioned below the upper partition plate, the other central shaft is positioned below the lower partition plate, and the central shafts are rotatably arranged inside the cabinet body.

Further, the distance between the power-off rack II and the cylindrical gear I close to the upper partition plate is larger than the distance between the power-off rack I and the cylindrical gear I close to the lower partition plate.

Further, power supply unit include rack down, rack down fixed mounting on the sleeve, sleeve slidable mounting inside the electric cabinet, the sleeve on be provided with inclined plane one, inclined plane one with the movable plate on inclined plane two sliding fit that one end set up, the movable plate on keep away from the one end fixed mounting of inclined plane two have terminal one, terminal one and switch sliding fit, still fixed mounting has terminal two on the switch, when terminal one and terminal two contact, the circuit switch on, movable plate and guide bar one sliding fit, movable plate and guide bar one between be provided with reset spring four.

Further, the power supply assembly still include the preforming, the one end of preforming be connected with the button on the switch, the other end and the sleeve sliding fit of preforming, the sleeve mounting inside the electric cabinet, be provided with the breach on the sleeve, breach department slidable mounting have the bulb pole, bulb pole and push rod fixed connection, and the one end that is close to the breach on the bulb pole is located telescopic lower extreme contact with the preforming.

Further, the heat dissipation device comprises a threaded rod rotatably arranged in the cabinet body, three threaded cylinders are linearly arranged along the central axis direction of the threaded rod, the threaded cylinders are in threaded fit with the threaded rod, two sides of each threaded cylinder are respectively provided with one end of a rotating rod in a rotating mode, the other end of each rotating rod is rotatably connected with a sliding cylinder, the sliding cylinder is in sliding fit with a second guide rod, the second guide rod is fixedly arranged in the cabinet body, and a third reset spring is arranged between the second guide rod and the sliding cylinder; the sliding cylinder on rotate the one end of installing the pull rod, the other end of pull rod articulated with the one end of cylinder pole, the other end and the heating panel fixed connection of cylinder pole, heating panel and the radiating groove sliding fit on the cabinet body, be provided with the louvre on the heating panel, fixed mounting has the dust cover on the radiating groove.

Further, the heat dissipation mechanism still include two belt components, two belt components's one end respectively with two threaded rods are connected, two belt components's the other end all is connected with the motor, motor fixed mounting in the cabinet body inside, the outside cover of motor is equipped with the cover, cover fixed mounting in the cabinet body inside, cover top arranges the through-hole of installation belt component.

Further, the inside of the cabinet body be linear fixed mounting and have three liquid nitrogen to store the bucket, liquid nitrogen store the bucket inside store and have liquid nitrogen, liquid nitrogen store the opening part sliding fit of bucket and have the inserted bar, the inserted bar be the toper, keep away from the one end of liquid nitrogen store the bucket on the three inserted bar respectively with three slide bar fixed connection.

Compared with the prior art, the invention has the beneficial effects that: (1) According to the invention, the heat dissipation and power-off work in the electric cabinet is automatically completed through the power-off mechanism and the heat dissipation mechanism, so that the structure is simple, and the operation is convenient; (2) The power-off mechanism can adaptively select the number of power-off according to the water accumulation amount, so that the power-on safety can be ensured, and the power supply can be ensured; (3) The heat dissipation mechanism can adjust the heat dissipation plate to leave the heat dissipation groove according to the temperature sensed by the sensor arranged in the cabinet body, so that heat dissipation can be performed rapidly.

Drawings

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

Fig. 2 is a schematic view of the structure of the cabinet door in fig. 1 in an opened state.

FIG. 3 is a schematic diagram of a power-off mechanism.

Fig. 4 is a schematic diagram of a portion of the power-off mechanism.

Fig. 5 is a schematic view of a partial enlarged structure at a in fig. 4.

Fig. 6 is a schematic diagram of a portion of a power-off mechanism.

Fig. 7 is a schematic view of a partial enlarged structure at B in fig. 6.

Fig. 8 is a schematic structural diagram of a heat dissipation mechanism.

Fig. 9 is a schematic view of a partially enlarged structure at C in fig. 8.

Fig. 10 is a schematic view of a partially enlarged structure at D in fig. 8.

Fig. 11 is a cross-sectional view of a liquid nitrogen storage barrel and plunger.

Reference numerals: 1-an electric cabinet; 101-a cabinet body; 102-fixing frame; 103-a cabinet door; 104-a solar panel; 105-lower separator; 106-upper partition plate; 2-a power-off mechanism; 201-floating; 202-a sliding column; 203-a first return spring; 204-shaft support; 205-slide bar; 206-limiting plates; 207-first power-off rack; 208-cylindrical gear one; 209-central axis; 210-a second cylindrical gear; 211-push rod; 212-lower rack; 213-a moving plate; 214-guide bar one; 215-first binding post; 216-a second binding post; 217-switch; 218-button; 219-tabletting; 220-a second reset spring; 221-sleeve; 222-a club head stem; 223-power-off rack two; 3-a heat dissipation mechanism; 301-a belt assembly; 302-a threaded rod; 303-a threaded cylinder; 304-rotating rod; 305-slide cylinder; 306-a second guide rod; 307-return spring three; 308-tie rod; 309-a heat radiating plate; 310-dust cap; 311-rectangular plate; 312-cover; 313-cylindrical rod; 4-a liquid nitrogen storage barrel; 5-inserting rod.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Examples: the high-low voltage switch cabinet shown in fig. 1-11 comprises an electric cabinet 1, wherein a power-off device and a heat dissipation device are arranged on the electric cabinet 1.

The electric cabinet 1 comprises a cabinet body 101 and two cabinet doors 103 symmetrically arranged on the cabinet body 101, wherein a lower partition plate 105 and an upper partition plate 106 are linearly and fixedly arranged in the cabinet body 101, and the upper partition plate 106 is positioned above the lower partition plate 105.

Specifically, the electric cabinet 1 further includes a fixing frame 102 and a solar panel 104, the solar panel 104 is installed above the exterior of the cabinet body 101, the solar panel 104 is used for shielding rain and generating electricity, two fixing frames 102 are provided, two fixing frames 102 are fixedly installed below the exterior of the cabinet body 101, and the fixing frames 102 are used for fixing the cabinet body 101.

The power-off device comprises three power-off mechanisms which are in linear arrangement and two groups of power-on mechanisms, the two groups of power-on mechanisms are respectively arranged on the lower partition 105 and the upper partition 106, each group of power-on mechanisms comprises three power-on assemblies which are identical in structure and in linear arrangement, and the power-off mechanisms are used for controlling the on-off of the power-on assemblies.

Specifically, the three sets of power supply mechanisms on the lower partition 105 and the upper partition 106 are all arranged linearly in the horizontal direction and correspond to each other in the vertical direction, that is, the projections in the vertical direction are coincident, so that the power supply assemblies on the same vertical line can be controlled by the three power supply mechanisms, respectively (as shown in fig. 3).

The two heat dissipation devices are symmetrically arranged on the cabinet body 101 and are used for dissipating heat of the cabinet body 101.

The outage mechanism includes cursory 201, cursory 201 is located the below outside of cabinet 101, cursory 201 and the one end fixed connection of slip post 202, the other end of slip post 202 and the slide bar 205 fixed connection that is located the inside of cabinet 101, slip post 202 and slide bar 205 all with cabinet 101 sliding fit, be provided with reset spring one 203 between the one end that is connected with slip post 202 and the cabinet 101 on the slide bar 205, reset spring one 203 cover is established in the outside of slip post 202, there are outage rack one 207 and outage rack two 223 along the length direction fixed mounting of slide bar 205, outage rack two 223 is located the below of upper baffle 106, outage rack one 207 is located the below of lower baffle 105.

Specifically, the sliding rod 205 is in sliding fit with two limiting plates 206, the limiting plates 206 are fixedly installed inside the cabinet 101, and the limiting plates 206 play a limiting role on the sliding rod 205.

The power-off mechanism further comprises two linearly arranged central shafts 209, a first cylindrical gear 208 and a second cylindrical gear 210 are fixedly arranged at two ends of the central shafts 209 respectively, one central shaft 209 is located below the upper partition plate 106, the other central shaft 209 is located below the lower partition plate 105, and the central shafts 209 are rotatably arranged inside the cabinet body 101.

Specifically, the lower partition 105 and the upper partition 106 are fixedly provided with a shaft support 204, the shaft support 204 is in running fit with the central shaft 209, and the shaft support 204 plays a role in supporting the central shaft 209.

The distance between the power-off rack two 223 and the first cylindrical gear 208 near the upper partition 106 is greater than the distance between the power-off rack one 207 and the first cylindrical gear 208 near the lower partition 105.

Specifically, when the first power-off rack 207 slides up to the position of the first cylindrical gear 208 below the lower partition 105 along with the slide rod 205, the first power-off rack 207 is meshed with the first cylindrical gear 208, but the distance that the second power-off rack 223 moves up along with the slide rod 205 at this time does not reach the position where the second power-off rack 223 can mesh with the first cylindrical gear 208 below the upper partition 106, which aims to power off the power supply mechanism on the lower partition 105 below first, and the power supply mechanism on the upper partition 106 can continue to supply power, so as to ensure the supply of power.

The power supply assembly comprises a lower rack 212, the lower rack 212 is fixedly arranged on a sleeve 221, the sleeve 221 is slidably arranged inside the electric cabinet 1, a first inclined surface is arranged on the sleeve 221 and is slidably matched with a second inclined surface arranged at one end of the movable plate 213, a first binding post 215 is fixedly arranged at one end, far away from the second inclined surface, of the movable plate 213, the first binding post 215 is slidably matched with a switch 217, a second binding post 216 is fixedly arranged on the switch 217, when the first binding post 215 is in contact with the second binding post 216, a circuit is connected, the movable plate 213 is slidably matched with the first guide rod 214, and a fourth reset spring is arranged between the movable plate 213 and the first guide rod 214.

Specifically, the moving plate 213 and the sleeve 221 in the power supply assembly on the lower partition 105 are both in sliding fit with the lower partition 105, and the first guide rod 214 is fixedly connected with the lower partition 105; the moving plate 213 and the sleeve 221 in the power supply assembly on the upper partition 106 are slidably engaged with the upper partition 106, and the first guide rod 214 is fixedly connected with the upper partition 106.

The power supply assembly further comprises a pressing piece 219, one end of the pressing piece 219 is connected with a button 218 on the switch 217, the other end of the pressing piece 219 is in sliding fit with a sleeve 221, the sleeve 221 is installed inside the electric cabinet 1, a notch is formed in the sleeve 221, a ball rod 222 is slidably installed at the notch, the ball rod 222 is fixedly connected with the push rod 211, and one end, close to the notch, of the ball rod 222 is in contact with the lower end of the pressing piece 219, located in the sleeve 221.

Specifically, a sleeve 221 in the power supply assembly on the lower partition plate 105 is fixedly connected with the lower partition plate 105, and a second return spring 220 is arranged between a pressing piece 219 in the power supply assembly on the lower partition plate 105 and the lower partition plate 105; a sleeve 221 in the power supply assembly on the upper partition 106 is fixedly connected with the upper partition 106, and a return spring two 220 is arranged between a pressing piece 219 in the power supply assembly on the upper partition 106 and the upper partition 106.

The heat dissipation device comprises a threaded rod 302 rotatably arranged in the cabinet body 101, three threaded cylinders 303 are linearly arranged along the central axis direction of the threaded rod 302, the threaded cylinders 303 are in threaded fit with the threaded rod 302, two sides of each threaded cylinder 303 are respectively rotatably provided with one end of a rotating rod 304, the other end of each rotating rod 304 is rotatably connected with a sliding cylinder 305, the sliding cylinders 305 are in sliding fit with a second guide rod 306, the second guide rod 306 is fixedly arranged in the cabinet body 101, and a third reset spring 307 is arranged between the second guide rod 306 and the sliding cylinders 305; one end of a pull rod 308 is rotatably arranged on the sliding cylinder 305, the other end of the pull rod 308 is hinged with one end of a cylindrical rod 313, the other end of the cylindrical rod 313 is fixedly connected with a heat dissipation plate 309, the heat dissipation plate 309 is in sliding fit with a heat dissipation groove on the cabinet 101, a heat dissipation hole is formed in the heat dissipation plate 309, and a dust cover 310 is fixedly arranged on the heat dissipation groove.

Specifically, the heat dissipation grooves are disposed on two sides of the cabinet 101, three heat dissipation grooves on each side, and each heat dissipation groove has the same shape and size as the heat dissipation plate 309. The rectangular plate 311 is fixedly arranged in the radiating groove, the rectangular plate 311 is in sliding fit with the two cylindrical rods 313, the guiding function is achieved, the rectangular plate 311 is located between the radiating plate 309 and the dust cover 310, and the dust cover 310 is used for blocking dust entering the cabinet 101 from the radiating hole in the radiating plate 309.

The heat dissipation mechanism further comprises two belt assemblies 301, one ends of the two belt assemblies 301 are respectively connected with the two threaded rods 302, the other ends of the two belt assemblies 301 are connected with motors, the motors are fixedly installed inside the cabinet body 101, covers 312 are sleeved outside the motors, the covers 312 are fixedly installed inside the cabinet body 101, and through holes for installing the belt assemblies 301 are arranged above the covers 312.

Specifically, the through hole is provided above the cover 312 in order not to interfere with the operation of the belt assembly 301 and to radiate heat from the motor, and the lower side of the cover 312 is in a sealed state, which is to prevent a small amount of water from damaging the motor when water enters the cabinet 101.

The inside of the cabinet body 101 is linear fixed mounting and has three liquid nitrogen storage barrels 4, liquid nitrogen is stored in the liquid nitrogen storage barrels 4, the opening part sliding fit of the liquid nitrogen storage barrels 4 has inserted bars 5, the inserted bars 5 are conical, and one ends, far away from the liquid nitrogen storage barrels 4, of the three inserted bars 5 are fixedly connected with three sliding bars 205 respectively.

Working principle: when the novel electric cabinet is used, the cabinet body 101 is fixed firstly, the fixing frame 102 and other structural members can be welded and fixed, and the fixing frame 102 can be buried to finish the fixation, so that after the fixing frame 102 finishes the fixation, the cabinet body 101 finishes the fixation, then a wire connected with electricity is connected with the first binding post 215 and the second binding post 216, and in an initial state, the first binding post 215 and the second binding post 216 are contacted with each other, and a circuit is a passage. The solar panel 104 above the cabinet 101 plays a role of an eave, and can generate electricity through solar energy, so that the cabinet door 103 is convenient to open when an electric element mounted in the cabinet 101 is operated.

In the use process, due to the power problem, the power is electrified to generate heat, namely, the interior of the cabinet body 101 generates heat, and the generated heat can pass through the heat dissipation plate 309 and then dissipate heat through the heat dissipation holes on the dust cover 310; when the temperature sensor installed in the cabinet body 101 detects that the temperature in the cabinet body 101 is too high and the natural state heat dissipation rate is low, the temperature sensor transmits a temperature signal to the control center, then the control center controls the motor to start, and finally the heat dissipation plate 309 is adjusted to leave from the heat dissipation groove, specifically:

the motor is started, so that two belt assemblies 301 connected to the motor output shaft rotate, the belt assemblies 301 are connected with the threaded rod 302, the threaded rod 302 rotates in the cabinet 101, the threaded rod 302 passes through the lower partition plate 105 and the upper partition plate 106, the threaded rod 302 cannot be interfered by the lower partition plate 105 and the upper partition plate 106 in the rotating process, when the threaded rod 302 rotates, the threaded cylinder 303 in threaded fit with the threaded rod 302 moves upwards along the threaded rod 302, the outer ring of the threaded rod 302 is in sliding fit with the ferrule for ensuring stable movement of the threaded cylinder 303, the ferrule is mounted in the cabinet 101, and the ferrule plays a guiding role on the threaded cylinder 303.

When the threaded cylinder 303 moves upwards, the threaded cylinder 303 pulls the rotating rod 304, so that the rotating rod 304 moves towards the direction close to the central axis of the threaded cylinder 303, the sliding cylinder 305 connected to the rotating rod 304 moves towards one side close to the central axis of the threaded rod 302 under the pulling of the rotating rod 304, the guide rod II 306 plays a role in guiding the movement of the sliding cylinder 305, and the elastic force generated by deformation of the return spring III 307 is used for assisting the return of the sliding cylinder 305.

In the process of moving the slide cylinder 305 to the position close to the central axis of the threaded rod 302, the slide cylinder 305 pushes the cylindrical rod 313 through the pull rod 308, and the pull rod 308 is hinged to the cylindrical rod 313, so that the slide cylinder 313 is not blocked, the pushed cylindrical rod 313 slides against the rectangular plate 311, and meanwhile, the cylindrical rod 313 pushes the heat dissipation plate 309, so that the heat dissipation plate 309 leaves the heat dissipation groove on the cabinet 101, and the interior of the cabinet 101 can be directly dissipated into the air through the heat dissipation groove, but not only can be used for dissipating heat through the heat dissipation holes on the heat dissipation plate 309, so that heat dissipation is promoted. Of course, to return the heat sink 309 to the heat sink, the motor simply has to be reversed, so that the threaded rod 302 is reversed and the screw barrel 303 is moved downward, thereby causing the slide barrel 305 and the pull rod 308 to pull the heat sink 309 back into the heat sink. It should be noted that, the temperature sensor is used to detect the temperature inside the cabinet 101 in the prior art, and the temperature signal detected by the temperature sensor is transmitted to the control center, so that the start and stop of the motor controlled by the control center are in the mature prior art, which can be realized by those skilled in the art.

When rainy weather appears, ponding appears in cabinet body 101 below, along with ponding grow, ponding can produce bigger and bigger buoyancy to cursory 201, will float 201 upwards gradually, because cursory 201 and slip post 202 fixed connection, so slip post 202 will slide along cabinet body 101, make the part that slip post 202 is located the inside of cabinet body 101 increase gradually, the slide bar 205 of fixed connection will slide upwards along cabinet body 101 and limiting plate 206 on the slip post 202, this in-process reset spring one 203 can be compressed, reset spring one 203's effect is supplementary slide bar 205 reset.

When the accumulated water is small, the water amount can only drive the buoy 201 to slide upwards for a small distance, and the first power-off rack 207 is close to the first cylindrical gear 208 below the lower partition plate 105, so that the first power-off rack 207 can be meshed with the first cylindrical gear 208 below the lower partition plate 105 and drive the first cylindrical gear 208 to rotate; the second power-off rack 223 is far away from the first cylindrical gear 208 below the upper partition 106, so that the second power-off rack 223 is not meshed with the first cylindrical gear 208, which means that the power-off component on the lower partition 105 is driven to power off, and the power-off component on the upper partition 106 is not driven to power off, so that the power-off component is not powered off, and the purpose of the power-off mechanism is to perform corresponding power off according to the accumulated water amount, and ensure power supply on the premise of safety.

Specifically, in the power-off process, the sliding rod 205 slides upwards, the power-off rack 207 and the power-off rack 223 fixedly connected to the sliding rod 205 slide upwards, firstly, the power-off rack 207 contacts the cylindrical gear 208 below the lower partition 105, so that the cylindrical gear 208 rotates, the cylindrical gear 208 is fixedly arranged on the central shaft 209, so that the central shaft 209 rotates on the shaft support 204, the cylindrical gear 210 fixedly arranged at the other end of the central shaft 209 rotates, the cylindrical gear 210 is meshed with the lower rack 212 fixedly arranged on the sleeve 221, so that the cylindrical gear 210 can drive the push rod 211 to slide on the lower partition 105 through the lower rack 212, the push rod 211 moves to the side close to the second binding post 216, at the moment, the spherical rod 222 fixedly arranged on the push rod 211 moves, one end of the spherical rod 222 inserted into a notch of the sleeve 221 rapidly leaves the part of the pressing piece 219, so that the pressing piece 219 is not supported by the spherical rod 222, the pressing piece 219 rapidly slides downwards along the sleeve 221 under the elastic force of the reset spring 220, the end of the pressing piece 219 rapidly presses the push button 218, and the first binding post 215 is rapidly pressed down by the push button 218, and the second binding post 215 is rapidly pressed by the first binding post 216 and the second binding post 216 is not pressed by the second binding post 216; meanwhile, when the push rod 211 moves, the first inclined surface on the push rod 211 drives the second inclined surface on the moving plate 213, so that the moving plate 213 slides along the lower partition 105 towards the second principle binding post 216, and the first guide rod 214 plays a guiding role in the process, and the fourth return spring plays a role in assisting the reset of the moving plate 213. After the first binding post 215 leaves the second binding post 216, the situation of electricity connection caused by damp can be prevented, and meanwhile, a closed circuit is not formed among the first binding post 215, the second binding post 216 and an external electric wire, so that electric leakage is prevented. It should be noted that, at this time, only the first binding post 215 and the second binding post 216 on the lower partition plate 105 are powered off, and the powered-off rack 223 does not contact the first cylindrical gear 208 below the upper partition plate 106, so that the first binding post 215 and the second binding post 216 on the upper partition plate 106 can still supply power when water accumulation is less, and thus, power supply can be ensured.

When the accumulated water gradually increases, the distance that the buoy 201 can push the sliding column 202 and the sliding rod 205 to rise increases, and at this time, the power-off rack two 223 will rise to a position contacting with the cylindrical gear one 208 below the upper partition 106 and drive the cylindrical gear one 208 to rotate, and power off is performed through rotation of the cylindrical gear one 208, and a specific power-off process is the same as that of the first binding post 215 and the second binding post 216 on the lower partition 105.

In the process of gradually moving the slide bar 205 upwards, the inserted bar 5 fixedly connected with the slide bar 205 also rises, so that the part of the inserted bar 5 positioned inside the liquid nitrogen storage barrel 4 gradually rises, and as the inserted bar 5 is conical, the diameter of the upper part of the inserted bar 5 is equal to the caliber of the upper part of the liquid nitrogen storage barrel 4, under the condition that the accumulated water is less and the upward moving distance of the shaft support 204 is less, the cylindrical part of the upper part of the inserted bar 5 can still seal the opening of the upper part of the liquid nitrogen storage barrel 4, but when the slide bar 205 drives the inserted bar 5 to move upwards to a larger distance, the conical part of the inserted bar 5 can reach the opening of the upper part of the liquid nitrogen storage barrel 4, even the inserted bar 5 leaves the liquid nitrogen storage barrel 4, thus representing that the accumulated water is much and enters the cabinet 101. At this time, the liquid nitrogen in the liquid nitrogen storage barrel 4 provides a low-temperature environment to cool or even freeze the water entering the cabinet body 101, so that the frozen ice can block gaps between the cabinet body 101 and the cabinet door 103 and the like, and the water is prevented from further entering the cabinet body 101, so that the electric elements in the cabinet body 101 are damaged. At the same time, the cover 312 inside the cabinet 101 also provides a sealed protection for the motor.

Claims (9)

1. The utility model provides a high-low voltage switchgear, includes electric cabinet (1), its characterized in that: the electric cabinet (1) is provided with a power-off device and a heat dissipation device;

the electric cabinet (1) comprises a cabinet body (101) and two cabinet doors (103) symmetrically arranged on the cabinet body (101), wherein a lower partition plate (105) and an upper partition plate (106) are linearly and fixedly arranged in the cabinet body (101), and the upper partition plate (106) is positioned above the lower partition plate (105);

the power-off device comprises three power-off mechanisms which are arranged linearly and two groups of power-on mechanisms, wherein the two groups of power-on mechanisms are respectively arranged on a lower partition board (105) and an upper partition board (106), each group of power-on mechanisms comprises three power-on components which are identical in structure and are arranged linearly, and the power-off mechanisms are used for controlling the on-off of the power-on components;

the two radiating devices are symmetrically arranged on the cabinet body (101) and used for radiating heat of the cabinet body (101).

2. A high and low voltage switchgear as claimed in claim 1, wherein: the utility model provides a power-off mechanism include cursory (201), cursory (201) be located the below outside of cabinet body (101), cursory (201) and the one end fixed connection of slip post (202), the other end of slip post (202) and be located the inside slide bar (205) fixed connection of cabinet body (101), slip post (202) and slide bar (205) all with cabinet body (101) sliding fit, slide bar (205) on one end and cabinet body (101) that are connected with slip post (202) between be provided with reset spring (203), reset spring (203) cover establish in the outside of slip post (202), follow the length direction fixed mounting of slide bar (205) have outage rack one (207) and outage rack two (223), outage rack two (223) be located the below of last baffle (106), outage rack one (207) are located the below of baffle (105).

3. A high and low voltage switchgear as claimed in claim 2, wherein: the power-off mechanism also comprises two linearly arranged central shafts (209), a first cylindrical gear (208) and a second cylindrical gear (210) are fixedly arranged at two ends of the central shafts (209), one central shaft (209) is positioned below the upper partition plate (106), the other central shaft (209) is positioned below the lower partition plate (105), and the central shaft (209) is rotatably arranged inside the cabinet body (101).

4. A high and low voltage switchgear as claimed in claim 3, wherein: the distance between the power-off rack II (223) and the cylindrical gear I (208) close to the upper partition plate (106) is larger than the distance between the power-off rack I (207) and the cylindrical gear I (208) close to the lower partition plate (105).

5. A high and low voltage switchgear as claimed in claim 4, wherein: the power supply assembly comprises a lower rack (212), the lower rack (212) is fixedly arranged on a sleeve (221), the sleeve (221) is slidably arranged inside the electric cabinet (1), a first inclined surface is arranged on the sleeve (221), a second inclined surface which is slidably matched with one end of a moving plate (213) is arranged on the first inclined surface, a first binding post (215) is fixedly arranged at one end, far away from the second inclined surface, of the moving plate (213), the first binding post (215) is slidably matched with a switch (217), a second binding post (216) is fixedly arranged on the switch (217), when the first binding post (215) is in contact with the second binding post (216), a circuit is connected, the moving plate (213) is slidably matched with the first guide rod (214), and a fourth reset spring is arranged between the moving plate (213) and the first guide rod (214).

6. A high and low voltage switchgear as claimed in claim 5, wherein: the power supply assembly further comprises a pressing piece (219), one end of the pressing piece (219) is connected with a button (218) on the switch (217), the other end of the pressing piece (219) is in sliding fit with the sleeve (221), the sleeve (221) is installed inside the electric cabinet (1), a notch is formed in the sleeve (221), a ball head rod (222) is slidably installed at the notch, the ball head rod (222) is fixedly connected with the push rod (211), and one end, close to the notch, of the ball head rod (222) is in contact with the lower end of the sleeve (221) in the pressing piece (219).

7. A high and low voltage switchgear as claimed in claim 6, wherein: the heat dissipation device comprises a threaded rod (302) rotatably arranged in the cabinet body (101), three threaded cylinders (303) are linearly arranged along the central axis direction of the threaded rod (302), the threaded cylinders (303) are in threaded fit with the threaded rod (302), two sides of each threaded cylinder (303) are respectively rotatably provided with one end of a rotating rod (304), the other end of each rotating rod (304) is rotatably connected with a sliding cylinder (305), the sliding cylinders (305) are in sliding fit with a guide rod II (306), the guide rod II (306) is fixedly arranged in the cabinet body (101), and a reset spring III (307) is arranged between the guide rod II (306) and the sliding cylinders (305); one end of a pull rod (308) is rotatably arranged on the sliding cylinder (305), the other end of the pull rod (308) is hinged with one end of a cylindrical rod (313), the other end of the cylindrical rod (313) is fixedly connected with a radiating plate (309), the radiating plate (309) is in sliding fit with a radiating groove on the cabinet body (101), a radiating hole is formed in the radiating plate (309), and a dust cover (310) is fixedly arranged on the radiating groove.

8. A high and low voltage switchgear as claimed in claim 7, wherein: the heat dissipation mechanism also comprises two belt assemblies (301), one ends of the two belt assemblies (301) are respectively connected with two threaded rods (302), the other ends of the two belt assemblies (301) are connected with a motor, the motor is fixedly installed inside the cabinet body (101), a cover (312) is sleeved outside the motor, the cover (312) is fixedly installed inside the cabinet body (101), and through holes for installing the belt assemblies (301) are arranged above the cover (312).

9. A high and low voltage switchgear as claimed in any of claims 1-8, wherein: the inside of the cabinet body (101) is linear fixed mounting and has three liquid nitrogen storage barrels (4), liquid nitrogen storage barrels (4) inside store and have liquid nitrogen, the opening part sliding fit of liquid nitrogen storage barrels (4) has inserted bars (5), inserted bars (5) be the toper, the one end that keeps away from liquid nitrogen storage barrels (4) on three inserted bars (5) is respectively with three slide bar (205) fixed connection.