CN114530781A - Switch board for circuit breaker with multinode outage function - Google Patents

Abstract

The invention relates to the field of circuit breakers, and specifically discloses a power distribution cabinet for circuit breakers with a multi-node power-off function. The circuit breaker body is disassembled and installed, both ends of the circuit breaker body are electrically connected with terminal blocks through the rectangular mounting frame, and one end of the terminal block close to the circuit breaker body is provided with an opening component. Through the setting of the insulating and heat-conducting plate, the heat generated inside the device can be conducted through the connecting contacts, and will be conducted to the insulating and heat-conducting plate. Rod for efficient heat dissipation.

Description

A power distribution cabinet for circuit breakers with multi-node power-off function

technical field

The invention relates to a power distribution cabinet, in particular to a power distribution cabinet for a circuit breaker with a multi-node power-off function, belonging to the field of circuit breakers.

Background technique

The circuit breaker is installed in the power distribution cabinet to protect the circuit equipment, and the circuit breaker is often connected to the line between the power supply and the electrical equipment.

However, the existing power distribution cabinets for circuit breakers with multi-node power-off function still have certain defects in use, especially for power distribution cabinets in some special cases, such as: sealed power distribution cabinets for In such cases, power distribution cabinets for circuit breakers with multi-node power-off function often have difficulties in heat dissipation, and there are also many inconveniences when technicians perform closing and opening experiments on circuit breakers. Only the power distribution cabinet can perform closing and opening experiments on the circuit breaker, which is very cumbersome and has certain safety risks. For this reason, we propose a power distribution cabinet for circuit breakers with multi-node power-off function.

SUMMARY OF THE INVENTION

In view of the problems in the prior art, the present invention provides a power distribution cabinet for circuit breakers with a multi-node power-off function.

The object of the present invention can be realized through the following technical solutions:

A power distribution cabinet for a circuit breaker with a multi-node power-off function, comprising a cabinet body, a rectangular mounting frame is slidably installed in the inner center of the cabinet body, a circuit breaker body is detachably installed in the rectangular installation frame, and a circuit breaker body is detachably installed. Both ends are electrically connected with terminal blocks through the rectangular mounting frame, and one end of the terminal block close to the circuit breaker body is provided with an opening component, the opening component is movably abutted with a heat dissipation component, and the end of the cabinet away from the opening component is hinged with a door panel. An end of the inner bottom of the cabinet away from the door panel is provided with an air box, the air box is connected with a sealing airbag, and the sealing airbag is arranged at the gap between the cabinet body and the door panel.

Preferably, a piston plate is slidably sleeved on the inside of the air box, a sliding rod is fixedly connected to both ends of the side of the piston plate close to the door panel, the sliding rod is provided with a first through hole, and the bottom side of the door panel is fixedly connected with a sliding rod. The fixing frame, the fixing frame is provided with a second through hole, the sliding rod located on the same side of the cabinet and the fixing frame are connected by a U-shaped rod, and the two ends of the U-shaped rod are respectively inserted into the first through hole and the second through hole. inside the through hole.

Preferably, the middle sections of the two sliding bars are fixedly sleeved with a horizontal plate, the two sliding bars are respectively sleeved on both ends of the horizontal plate, and both ends of the top of the horizontal plate are fixedly connected with support rods, and the support rods are far away from the horizontal plate. One end of the cabinet is fixedly connected to the rectangular installation frame, slide rails are provided on both inner side walls of the cabinet, and slide bars are fixedly connected to both sides of the rectangular installation frame, and the two slide bars are respectively slidably connected in the two slide rails.

Preferably, both ends of one side of the rectangular installation frame away from the door panel are fixedly connected with electrical terminals, the two electrical terminals are respectively electrically connected to the input end and the output end of the circuit breaker body, and the two electrical terminals are opened through the opening of the circuit breaker. The components are respectively electrically connected with the two terminals.

Preferably, the switch-off assembly includes connecting contacts that are electrically connected to the two terminals and the two terminals, respectively, and a U-shaped insulating and heat-conducting plate is fixed and sleeved on the outside of the two connecting contacts, and a U-shaped insulating and heat-conducting plate is installed between the two insulating and heat-conducting plates. A plurality of connecting rods are fixedly connected, a telescopic rod is fixedly connected to the top of the insulating heat-conducting plate located above, a telescopic switch is fixedly connected to the outer side wall of the cabinet, and the telescopic switch is electrically connected to the telescopic rod.

Preferably, the heat dissipation assembly comprises a rectangular heat-conducting plate movably abutting with the outer sidewalls at both ends of the two insulating heat-conducting plates, the rectangular heat-conducting plates are embedded in the two sidewalls of the cabinet, and the rectangular heat-conducting plates are far away from the inside of the cabinet. A plurality of heat-conducting rods are fixedly connected to one side of the cabinet, and the four rectangular heat-conducting plates are respectively fixedly connected with four auxiliary support plates through the plurality of heat-conducting rods. The auxiliary support plates are provided with grooves along the horizontal direction for auxiliary fixing of the cabinet.

Preferably, two L-shaped panels are fixedly connected to the inner two sidewall panels of the cabinet, respectively, the inner sidewall panel of the L-shaped panel, the bottom panel of the insulating and heat-conducting panel, and the wall panel on the side of the insulating and heat-conducting panel close to the door panel. Abut.

Preferably, a first U-shaped tube and a second U-shaped tube are communicated with the bottom of the air-tight air bag, and one end of the first U-shaped tube away from the air-tight air bag is communicated with the air box, and the communication place is located in the inner part of the air box where the piston plate is close to the door plate. At the bottom of one side, one end of the second U-shaped tube away from the airbag is communicated with the air box, and the connection is located at the bottom of the side of the piston plate inside the air box away from the door plate.

Preferably, the first U-shaped pipe is provided with a first one-way valve, the second U-shaped pipe is provided with a second one-way valve, and a side wall of the air box close to the door plate is provided with an air intake one-way valve. The end of the top of the box away from the door plate is provided with an air outlet solenoid valve. The air outlet solenoid valve is located just above the connection between the air box and the second U-shaped pipe. The air outlet solenoid valve is electrically connected with a valve switch, which is fixedly connected to the side of the cabinet. .

Preferably, a transparent observation window is provided on the door panel, a sealing ring is provided at the connection between the observation window and the door panel, and a sealing strip is provided on the side of the door panel away from the hinged joint between the door panel and the cabinet body.

Beneficial effects of the present invention:

1. Through the setting of the insulating and heat-conducting plate, the heat generated inside the device can be conducted through the connection contacts, and will be conducted to the insulating and heat-conducting plate. Effective heat dissipation is carried out through the heat conduction rod, and in rainy weather, the evaporation of rainwater on the heat conduction rod will also promote the heat dissipation of the device, and in normal weather, the heat conduction rod can also effectively carry out the heat dissipation of the device. heat dissipation.

2. Through the setting of the telescopic rod and the telescopic switch, the technicians only need to observe and analyze the action of the circuit breaker body through the observation window when performing the closing and opening experiments on the circuit breaker body. Personnel can perform effective closing and opening experiments on the circuit breaker body without opening the door, which greatly improves the safety of technicians. The accuracy of the experimental data enables technicians to carry out effective experiments on the circuit breaker body in application under the condition of safety guarantee, which greatly improves the reliability of closing and opening experiments.

3. By increasing the distance between the wiring head and the electrical connection head, the current on the wiring head can be further prevented from penetrating the air, and the multi-node power failure can be achieved by insulating the heat-conducting plate and the rectangular mounting frame away from the wiring head. Effectively ensure that the circuit breaker body will not be energized, so that the safety of the repair and replacement of the circuit breaker body by the technician after opening the door panel is effectively guaranteed.

4. Through the setting of the horizontal plate and the rectangular mounting frame, the circuit breaker body is moved to the door plate of the cabinet after the door plate is opened, which effectively prevents the technicians from repairing and maintaining the circuit breaker body because the circuit breaker body is located in the cabinet. The situation that the technicians need to enter the cabinet to repair and maintain the circuit breaker body caused by the inside of the body occurs, so that the technicians can repair, maintain and replace the circuit breaker body in a more spacious place, which greatly improves the work efficiency of the technicians. .

Description of drawings

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

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

FIG. 2 is a schematic diagram of the overall structure of the present invention after the door panel is removed.

FIG. 3 is a schematic diagram of the installation structure of the rectangular installation frame of the present invention.

FIG. 4 is an enlarged schematic view of the structure of part A shown in FIG. 3 of the present invention.

FIG. 5 is a schematic cross-sectional view of the structure of the insulating and heat-conducting plate of the present invention.

FIG. 6 is a schematic diagram of the connection structure of the horizontal plate of the present invention.

FIG. 7 is a schematic diagram of the installation structure of the connecting contact according to the present invention.

In the figure: 1. Cabinet body; 2. Door panel; 3. Thermal rod; 4. Auxiliary support plate; 5. Rectangular thermal conductive plate; 6. Telescopic switch; 7. Valve switch; 8. Observation window; 9. Rectangular mounting frame; 10. Circuit breaker body; 11. L-shaped plate; 12. Insulation heat-conducting plate; 13. Slide bar; 14. Horizontal plate; 15. Sealed airbag; 16. Air box; 17. Support rod; 18. Slide bar; 19. U-shaped rod; 20, air inlet check valve; 21, air outlet solenoid valve; 22, telescopic rod; 23, connecting contact; 24, wiring head; 25, electrical connection head; 26, slide rail; 28, first U 29, the second U-shaped pipe; 30, the piston plate; 31, the connecting rod; 32, the fixing frame.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, a power distribution cabinet for circuit breakers with multi-node power-off function includes a cabinet body 1, and a rectangular mounting frame 9 is slidably installed at the inner center of the cabinet body 1. The rectangular mounting frame 9 can accommodate The circuit breaker body 10 is disassembled and installed, and both ends of the circuit breaker body 10 are electrically connected with the terminal block 24 through the rectangular mounting frame 9. One end of the terminal block 24 close to the circuit breaker body 10 is provided with an opening component, and the opening component is movable against the circuit breaker body 10. A heat dissipation assembly is connected, a door panel 2 is hinged at one end of the cabinet body 1 away from the opening assembly, and an air box 16 is arranged at one end of the inner bottom of the cabinet body 1 away from the door panel 2, and the air box 16 is connected with a sealing air bag 15. The gap between the cabinet 1 and the door panel 2. The sealing of the cabinet 1 can be effectively ensured by the arrangement of the sealing airbag 15 .

As a technical optimization solution of the present invention, the inside of the air box 16 is slidably sleeved with a piston plate 30 , and both ends of the piston plate 30 close to the door panel 2 are fixedly connected with a sliding rod 18 , and the sliding rod 18 is provided with a first Through hole, a fixing frame 32 is fixedly connected to the bottom side of the door panel 2, and a second through hole is opened on the fixing frame 32. , the two ends of the U-shaped rod 19 are respectively inserted into the first through hole and the second through hole. The U-shaped rod 19 is arranged so that when the door panel 2 is opened, the sliding bar 18 can be effectively driven to move, so that the air bag 15 can be effectively supplemented with air, and the rectangular mounting frame 9 can move toward the door panel 2 .

As a technical optimization scheme of the present invention, the middle sections of the two sliding bars 18 are fixedly sleeved with the horizontal plates 14 , the two sliding bars 18 are respectively sleeved on both ends of the horizontal plates 14 , and the top ends of the horizontal plates 14 are fixed at both ends. A support rod 17 is connected, and one end of the support rod 17 away from the horizontal plate 14 is fixedly connected to the rectangular mounting frame 9 . Slide rails 26 are provided on both inner side walls of the cabinet 1 , and both sides of the rectangular mounting frame 9 are fixed. A sliding rod 13 is connected, and the two sliding rods 13 are slidably connected in the two sliding rails 26 respectively. The arrangement of the slide rails 26 and the slide bars 13 can effectively share the supporting force of the support bars 17 on the rectangular mounting frame 9 on the one hand, and on the other hand, can also ensure that the rectangular mounting frame 9 will not be offset and inclined.

As a technical optimization scheme of the present invention, the two ends of the side of the rectangular mounting frame 9 away from the door panel 2 are fixedly connected with electrical terminals 25 , and the two electrical terminals 25 are respectively electrically connected to the input end and the output end of the circuit breaker body 10 . The two terminals 25 are electrically connected to the two terminals 24 respectively through the switch-off assembly. Among the two terminals 24, the upper terminal 24 is electrically connected to one end of the power supply in the line, and the lower terminal 24 is electrically connected to the electrical equipment.

As a technical optimization scheme of the present invention, the opening assembly includes connecting contacts 23 that are electrically connected to the two terminals 25 and the two terminals 24 respectively, and the outer sides of the two connecting contacts 23 are fixedly sleeved with U-shaped insulation The heat-conducting plate 12, a plurality of connecting rods 31 are fixedly connected between the two insulating heat-conducting plates 12, a telescopic rod 22 is fixedly connected to the top of the insulating heat-conducting plate 12 located above, and a telescopic switch 6 is fixedly connected to the outer side wall of the cabinet 1 , the telescopic switch 6 is electrically connected with the telescopic rod 22 . The telescopic switch 6 is a contact switch. When the telescopic switch 6 is pressed for the first time, the telescopic rod 22 contracts; when the telescopic switch 6 is pressed for the second time, the telescopic rod 22 extends; when the telescopic switch 6 is pressed for the third time, the telescopic rod 22 contracts ; When pressing the telescopic switch 6 for the fourth time, the telescopic rod 22 is extended;

As a technical optimization solution of the present invention, the heat dissipation assembly includes rectangular heat-conducting plates 5 movably in contact with the outer sidewalls at both ends of the two insulating heat-conducting plates 12 , and the rectangular heat-conducting plates 5 are embedded in the two sidewalls of the cabinet 1 . On the side of the rectangular heat-conducting plate 5 away from the interior of the cabinet 1, a plurality of heat-conducting rods 3 are fixedly connected, and the four rectangular heat-conducting plates 5 are respectively fixedly connected with four auxiliary support plates 4 through the plurality of heat-conducting rods 3. The auxiliary support plates 4 A groove for auxiliary fixing of the cabinet 1 is provided on the top along the horizontal direction. The arrangement of the groove enables the auxiliary support plate 4 to be clamped with the railings preset on the installation frame, which further ensures the stability of the installation of the cabinet 1 .

As a technical optimization solution of the present invention, two L-shaped boards 11 are fixedly connected to the inner two side walls of the cabinet 1 respectively. The heat-conducting plate 12 is in contact with the wall plate on the side close to the door panel 2 . The insulating heat-conducting plate 12 is an organic silicon heat-conducting glue, and the model of the organic heat-conducting silica gel is: Osbon 160 heat-conducting silica gel.

As a technical optimization solution of the present invention, a first U-shaped tube 28 and a second U-shaped tube 29 are communicated with the bottom of the air-tight airbag 15, and the end of the first U-shaped tube 28 away from the air-tight airbag 15 is communicated with the air box 16 and the The communication point is located at the bottom of the side of the inner piston plate 30 of the air box 16 close to the door panel 2 , and the end of the second U-shaped tube 29 away from the sealing air bag 15 is communicated with the air box 16 , and the communication point is located inside the air box 16 The piston plate 30 is far away from the door panel 2 . side bottom. The air intake check valve 20 provided on the side of the air box 16 close to the door panel 2 enables the outside air to enter the chamber inside the air box 16 located on the side of the piston plate 30 close to the door panel 2. When the door panel 2 is closed, the air box 16 The chamber located on the side of the piston plate 30 close to the door plate 2 can effectively supply gas to the chamber located on the side of the piston plate 30 close to the door plate 2 in the air box 16 through the intake check valve 20 .

As a technical optimization scheme of the present invention, the first U-shaped pipe 28 is provided with a first one-way valve, the second U-shaped pipe 29 is provided with a second one-way valve, and the air box 16 is close to one side wall of the door panel 2 An air intake check valve 20 is provided on the board, and an air outlet solenoid valve 21 is provided at the end of the top of the air box 16 away from the door panel 2. The valve 21 is electrically connected with the valve switch 7 , and the valve switch 7 is fixedly connected to the side of the cabinet 1 . The first one-way valve allows the gas in the air box 16 to only enter the air-tight airbag 15 , the second one-way valve is an air pressure one-way valve, and the second one-way valve is set with an air pressure preset value. When the air pressure is higher than this preset value, the second one-way valve will be opened, so that the air in the airtight airbag 15 enters the air box 16 through the second U-shaped pipe 29, and the air pressure in the airtight airbag 15 is lower than this preset value value, the second one-way valve is closed.

As a technical optimization scheme of the present invention, a transparent observation window 8 is provided on the door panel 2, a sealing ring is provided at the connection between the observation window 8 and the door panel 2, and a side of the door panel 2 away from the hinge of the door panel 2 and the cabinet 1 is provided Has seals. The arrangement of the sealing ring and the sealing strip further ensures the airtightness of the cabinet body 1 and prevents outside air from entering the cabinet body 1 .

The power distribution cabinet is often installed on a preset mounting frame between two utility poles, and the power distribution cabinet is often set below the transformer. Therefore, when installing the power distribution cabinet, it is often pre-fixed on the power pole. Install the mounting frame for the power distribution cabinet. At the same time, in order to ensure the safety of electricity use and the convenience of the maintenance of the power distribution cabinet, a guardrail is often fixed around the installed frame.

When the present invention is in use, the cabinet body 1 is installed on a preset installation frame between the two utility poles, and then the grooves on the auxiliary support plate 4 are abutted on the guardrails arranged around the installation frame, so as to be used for The cabinet body 1 is supported, the stability of the cabinet body 1 is improved, and the risk of tipping and shaking of the cabinet body 1 is prevented. After the cabinet body 1 is fixed, the device can be effectively sealed by closing the door panel 2. When the circuit breaker body 10 is running, the circuit breaker body 10, the connection contacts 23, the wiring heads 24 and the electrical connection heads 25 will be A certain amount of heat is generated by the current, so the device needs to be dissipated. The heat is conducted through the connection contacts 23 and will be conducted to the insulating heat-conducting plate 12. The insulating heat-conducting plate 12 then guides the heat to the rectangular heat-conducting plate 5. The rectangular heat-conducting plate 5 effectively dissipates heat through the heat-conducting rods 3, and in rainy weather, after the heat-conducting rods 3 are exposed to rain, the evaporation of rainwater will also promote the heat dissipation of the device, and when the weather is normal, the heat-conducting rods 3 also The device can be effectively dissipated.

When it is necessary to perform closing and opening experiments on the circuit breaker body 10, the technician does not need to open the door panel 2. In the opening experiment, the telescopic rod 22 is contracted by pressing the telescopic switch 6, and the contraction of the telescopic rod 22 will drive the insulating heat-conducting plate 12 to move upward. Then, the insulating and heat-conducting plate 12 drives the connecting contacts 23 to move upward, so that the connection between the connecting contacts 23 and the terminals 24 and the contacts 25 is disconnected, so that the circuit breaker body 10 is effectively disconnected, and the closing experiment is passed. Press the telescopic switch 6 again to extend the telescopic rod 22, and the extension of the telescopic rod 22 will drive the insulating and heat-conducting plate 12 to move downward, thereby causing the insulating and heat-conducting plate 12 to drive the connecting contact 23 to move downward, thereby making the connecting contact 23 and the wiring head move downward. The electrical connection between 24 and the power connection head 25 is re-established, so that the circuit breaker body 10 is reconnected to the circuit. In this process, the technician only needs to observe and analyze the action of the circuit breaker body 10 through the observation window 8. On the one hand, the technician can perform an effective closing and opening experiment on the circuit breaker body 10 without opening the door panel 2. The safety of the technicians is greatly improved. On the other hand, by directly performing the closing and opening experiments of the circuit breaker body 10 in the cabinet 1, the accuracy of the experimental data can be ensured, so that the technicians can obtain the safety guarantee. In this case, the circuit breaker body 10 in application can be effectively tested, which greatly improves the reliability of the closing and opening experiments.

When the circuit breaker body 10 needs to be repaired and replaced, the telescopic rod 22 can disconnect the connection contact 23 from the connection head 24 and the electrical connection head 25 by pressing the telescopic switch 6 , so that the circuit breaker body 10 is in a non-energized state. , and at this time, the insulating heat-conducting plate 12 will block the front of the terminal 24 to prevent the current on the charged terminal 24 from penetrating the air, thereby causing the personal safety of the technician to be threatened, which greatly ensures the technical personnel safety. Then, by pressing the valve switch 7, the air outlet solenoid valve 21 is opened, so that the gas in the air box 16 located on the side of the piston plate 30 away from the door plate 2 flows into the cabinet 1, thereby effectively preventing the air inside the cabinet 1 from heating and cooling. The air pressure inside the cabinet 1 is lower than the outside air pressure caused by the shrinkage, so that the door panel 2 is difficult to open. In the process of opening the door panel 2, the fixing frame 32 at the bottom of the door panel 2 will drive the sliding bar 18 to move toward the direction close to the door panel 2 through the U-shaped rod 19, so that the sliding bar 18 drives the piston plate 30 to move in the direction of the door panel 2, After the door panel 2 opens a gap, the air inside the cabinet 1 will be in relative circulation with the outside air, so that the internal air pressure of the cabinet 1 is balanced with the outside air pressure. At the same time, the U-shaped rod 19 drives the sliding rod 18 to move, which can effectively prevent the door panel 2 from being ejected and opened due to the air pressure inside the cabinet 1 being greater than the outside air pressure, which greatly improves the safety of the door panel 2 opening.

In the process of opening the door panel 2, the gas inside the air box 16 in the chamber on the side of the piston plate 30 close to the door panel 2 will pass through the first U-shaped pipe 28 and the first one-way valve to seal the airbag under the movement of the piston plate 30. 15 is supplemented with gas, thereby effectively ensuring the airtightness of the airbag 15 to the door panel 2. At the same time, after the air pressure inside the cabinet 1 is balanced with the outside air pressure, the air outlet solenoid valve 21 is not closed at this time, so the inside of the air box 16 is located on the piston plate. 30 The chamber on the side away from the door panel 2 will be supplemented with gas through the air outlet solenoid valve 21 to absorb the gas inside the cabinet 1. During this process, the second one-way valve arranged inside the second U-shaped pipe 29 is sealed. When the air pressure in the air bag 15 is greater than the preset value, the gas will be discharged into the chamber inside the air box 16 on the side of the piston plate 30 away from the door plate 2, on the one hand, it can effectively prevent the sealing air bag 15 from being caused by excessive supplemental gas. It can effectively improve the service life of the sealed air bag 15. On the other hand, the second U-shaped pipe 29 can also effectively supply air to the chamber located on the side of the piston plate 30 away from the door plate 2 in the air box 16. The air supply efficiency of the air outlet solenoid valve 21 is improved.

When the fixed frame 32 drives the sliding bar 18 to move in the direction of the door panel 2 , the sliding bar 18 also drives the rectangular mounting frame 9 to move in the direction of the door panel 2 through the horizontal plate 14 and the support rod 17 , and the rectangular mounting frame 9 moves toward the door panel 2 . The direction of movement can effectively drive the terminal 25 away from the terminal 24 with dots, and by increasing the distance between the terminal 24 and the terminal 25, it can further prevent the current on the terminal 24 from penetrating the air. By means of the multi-node power-off of the insulating heat-conducting plate 12 and the rectangular mounting frame 9 away from the terminal 24, it can effectively ensure that the circuit breaker body 10 will not be energized, so that the technician can repair the circuit breaker body 10 after opening the door panel 2. The safety of replacement is effectively guaranteed. When the sliding bar 18 also drives the rectangular mounting frame 9 to move in the direction of the door panel 2 through the horizontal plate 14 and the support rod 17, the sliding bars 13 on both sides of the rectangular mounting frame 9 will slide in the sliding rails 26, thereby making the rectangular mounting frame 9 slide. The frame 9 drives the circuit breaker body 10 to move toward the direction close to the door panel 2, so that the circuit breaker body 10 moves to the door panel 2 of the cabinet 1 after the door panel 2 is opened, which effectively prevents technicians from repairing the circuit breaker body 10. During maintenance, because the circuit breaker body 10 is located in the cabinet body 1, the technician needs to enter the cabinet body 1 to perform inspection and maintenance on the circuit breaker body 10, so that the technician can inspect the circuit breaker body in a more spacious place. 10 Carry out overhaul, maintenance and replacement, which greatly improves the work efficiency of technicians.

After the maintenance or replacement of the circuit breaker body 10 is completed, the air outlet solenoid valve 21 is closed first through the valve switch 7, and then the door panel 2 is closed. The shaped rod 19 pushes the sliding bar 18 to move away from the door panel 2 , so as to reset the rectangular mounting frame 9 , and also makes the piston plate 30 move away from the door panel 2 . When the piston plate 30 moves in the direction away from the door panel 2, it will squeeze the gas inside the air box 16 in the chamber on the side of the piston plate 30 away from the door panel 2, so that the door panel 2 can be opened smoothly next time, and the door panel 2 will be closed after closing. Squeeze the sealing airbag 15 so that the door panel 2 and the sealing airbag 15 can effectively seal the cabinet 1 . After the door panel 2 is closed, by pressing the telescopic switch 6, the telescopic rod 22 is extended, so that the electrical connection head 25, the connection contact 23 and the wiring head 24 form a passage, thereby enabling the circuit breaker body 10 to work smoothly.

The above-disclosed preferred embodiments of the present invention are provided only to help illustrate the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (10)

1. A power distribution cabinet with multi-node power failure function for a circuit breaker comprises a cabinet body (1), the novel multifunctional cabinet is characterized in that a rectangular mounting frame (9) is slidably mounted at the inner center of the cabinet body (1), a circuit breaker body (10) is detachably mounted in the rectangular mounting frame (9), a connector lug (24) is electrically connected to the two ends of the circuit breaker body (10) through the rectangular mounting frame (9), a brake separating assembly is arranged at one end, close to the circuit breaker body (10), of the connector lug (24), the heat dissipation assembly is abutted to the activity of the brake separating assembly, a door plate (2) is hinged to one end, far away from the brake separating assembly, of the cabinet body (1), an air box (16) is arranged at one end, far away from the door plate (2), of the inner bottom of the cabinet body (1), the air box (16) is communicated with a sealing air bag (15), and the sealing air bag (15) is arranged at a gap between the cabinet body (1) and the door plate (2).

2. The power distribution cabinet with the multi-node power-off function for the circuit breaker is characterized in that a piston plate (30) is sleeved in the gas box (16) in a sliding mode, two ends of one side, close to the door plate (2), of the piston plate (30) are fixedly connected with sliding rods (18), first through holes are formed in the sliding rods (18), a fixing frame (32) is fixedly connected to one side of the bottom of the door plate (2), second through holes are formed in the fixing frame (32), the sliding rods (18) located on the same side of the cabinet body (1) are in transmission connection with the fixing frame (32) through U-shaped rods (19), and two ends of the U-shaped rods (19) are inserted into the first through holes and the second through holes respectively.

3. The power distribution cabinet with the multi-node power failure function for the circuit breaker according to claim 2, wherein a transverse plate (14) is fixedly sleeved at the middle section of each of the two slide bars (18), the two slide bars (18) are respectively sleeved at two ends of the transverse plate (14), support rods (17) are fixedly connected at two ends of the top of the transverse plate (14), one ends of the support rods (17) far away from the transverse plate (14) are fixedly connected to the rectangular mounting frame (9), slide rails (26) are respectively arranged on two side wall plates inside the cabinet body (1), slide bars (13) are respectively fixedly connected to two sides of the rectangular mounting frame (9), and the two slide bars (13) are respectively slidably connected in the two slide rails (26).

4. The power distribution cabinet with the multi-node power-off function for the circuit breaker is characterized in that two end parts of one side, far away from the door plate (2), of the rectangular mounting frame (9) are fixedly connected with electric connectors (25), the two electric connectors (25) are respectively and electrically connected with the input end and the output end of the circuit breaker body (10), and the two electric connectors (25) are respectively and electrically connected with the two connector terminals (24) through a switching-off assembly.

5. The switch board with the multi-node power-off function for the circuit breaker is characterized in that the switching-off component comprises connecting contacts (23) which are respectively electrically connected with two connecting terminals (25) and two connecting terminals (24), the outer sides of the two connecting contacts (23) are fixedly sleeved with U-shaped insulating heat-conducting plates (12), a plurality of connecting rods (31) are fixedly connected between the two insulating heat-conducting plates (12), telescopic rods (22) are fixedly connected to the tops of the insulating heat-conducting plates (12) above, telescopic switches (6) are fixedly connected to the outer side wall plates of the cabinet body (1), and the telescopic switches (6) are electrically connected with the telescopic rods (22).

6. The power distribution cabinet with the multi-node power failure function for the circuit breaker is characterized in that the heat dissipation assembly comprises rectangular heat conduction plates (5) movably abutted to outer side wall plates at two ends of two insulating heat conduction plates (12), the rectangular heat conduction plates (5) are embedded on the two side wall plates of the cabinet body (1), one sides, far away from the inside of the cabinet body (1), of the rectangular heat conduction plates (5) are fixedly connected with a plurality of heat conduction rods (3), the four rectangular heat conduction plates (5) are respectively and fixedly connected with four auxiliary supporting plates (4) through the plurality of heat conduction rods (3), and grooves for assisting and fixing the cabinet body (1) are formed in the auxiliary supporting plates (4) in the horizontal direction.

7. The switch board with multi-node power-off function for the circuit breaker according to claim 5, characterized in that two L-shaped plates (11) are fixedly connected to two side wall plates inside the cabinet body (1), respectively, and the inner side wall plate of the L-shaped plate (11) is abutted to the bottom wall plate of the insulated heat-conducting plate (12) and the wall plate of the insulated heat-conducting plate (12) close to one side of the door panel (2).

8. The switch board with the multi-node power-off function for the circuit breaker is characterized in that a first U-shaped pipe (28) and a second U-shaped pipe (29) are communicated with the bottom of the sealing air bag (15), one end, far away from the sealing air bag (15), of the first U-shaped pipe (28) is communicated with the air box (16) and is positioned at the bottom of one side, close to the door plate (2), of the piston plate (30) in the air box (16), and one end, far away from the sealing air bag (15), of the second U-shaped pipe (29) is communicated with the air box (16) and is positioned at the bottom of one side, far away from the door plate (2), of the piston plate (30) in the air box (16).

9. The power distribution cabinet with the multi-node power failure function for the circuit breaker according to claim 8, wherein a first one-way valve is arranged in the first U-shaped pipe (28), a second one-way valve is arranged in the second U-shaped pipe (29), an air inlet one-way valve (20) is arranged on a side wall plate, close to the door plate (2), of the air box (16), an air outlet electromagnetic valve (21) is arranged at one end, far away from the door plate (2), of the top of the air box (16), the air outlet electromagnetic valve (21) is located right above a communication position of the air box (16) and the second U-shaped pipe (29), the air outlet electromagnetic valve (21) is electrically connected with a valve switch (7), and the valve switch (7) is fixedly connected to the side of the cabinet body (1).

10. The power distribution cabinet with the multi-node power failure function for the circuit breaker is characterized in that a transparent observation window (8) is arranged on the door panel (2), a sealing ring is arranged at the joint of the observation window (8) and the door panel (2), and a sealing strip is arranged on one side, away from the hinge joint of the door panel (2) and the cabinet body (1), of the door panel (2).

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