Distribution box with good sealing performance

Abstract

The utility model discloses a distribution box with good sealing performance, which relates to the technical field of distribution boxes, and comprises a box body, an inner box is fixedly arranged in the box body, an arc light preventing mechanism is arranged in the inner box, the arc light preventing mechanism comprises an air bag, a spring is arranged in the air bag, and the arc light preventing mechanism is arranged in the air bag. The two ends of the spring are fixedly connected with supporting plates, the supporting plates are fixedly installed on the inner wall of the air bag, a flow dividing block is arranged on one side of the air bag, the flow dividing block is of an annular structure, the flow dividing block is slidably connected to the inner box, and an inner cavity of the flow dividing block communicates with the air bag; the side, back to the air bag, of the flow dividing block fixedly communicates with a spray head, and an electric push rod is fixedly installed on the side, away from the flow dividing block, of the air bag. According to the utility model, gas in the air bag is sprayed out through the nozzle, so that electric arc is blown out, and burnout of electrical elements and damage to an electric cabinet are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution boxes, in particular to a distribution box with good sealing performance. Background Art

[0002] A distribution box or electric control box contains one or more low-voltage switchgear and related control, measurement, signal, protection, regulation and other equipment, and is fully assembled together with structural components by the manufacturer.

[0003] For example, a patent entitled: An explosion-proof electric control box (patent publication number: CN219893718U) discloses an explosion-proof electric control box, including a box body, the box body including a first side panel and a bottom panel, the first side panel having a notch; at least one partition panel, the partition panel is arranged inside the box body, the partition panel and the first side panel form a heat dissipation chamber, the partition panel has a plurality of through holes, the heat dissipation chamber is connected to the box body through the through holes; a heat dissipation fan, the heat dissipation fan is arranged on the bottom panel, and the heat dissipation fan is used to blow air into the heat dissipation chamber.

[0004] However, this patent only considers the heat dissipation of the electric control box, and does not consider the working environment of the explosion-proof electric control box. When the explosion-proof electric control box is working, there may be dangerous dust or dangerous gas in the environment. If the inside and outside of the explosion-proof electric control box are directly ventilated, once an electrical component short circuits and generates an arc, this high-temperature and high-energy electric spark can easily ignite the surrounding dangerous dust or gas, and then cause a fire or explosion, which will not only cause serious damage to the electronic components in the electric control box, but also pose a huge risk to personnel safety and production equipment.

[0005] Therefore, it is necessary to propose a distribution box with good sealing to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a distribution box with good sealing performance to solve the problem that when the explosion-proof electric control box is working, there may be dangerous dust or dangerous gas in the environment, which will not only cause serious damage to the electronic components in the electric control box, but also pose a huge risk to personnel safety and production equipment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a distribution box with good sealing performance, comprising a box body, an inner box is fixedly installed inside the box body, an arc protection mechanism is arranged inside the inner box, the arc protection mechanism comprises an airbag, a spring is arranged inside the airbag, both ends of the spring are fixedly connected with support plates, the support plate is fixedly installed on the inner wall of the airbag, a shunt block is arranged on one side of the airbag, the shunt block is annular in structure, the shunt block is slidably connected to the inner box, and the inner cavity of the shunt block is connected to the airbag.

[0008] Preferably, a nozzle is fixedly connected to the side of the diverter block facing away from the airbag, and a plurality of nozzles are provided. An electric push rod is fixedly installed on the side of the airbag away from the diverter block, and the electric push rod is fixedly installed on the inner wall of the inner box.

[0009] Preferably, a mounting plate is provided inside the inner box, the diverter block is fixedly sleeved on the mounting plate, and the airbag is fixedly mounted on the mounting plate.

[0010] Preferably, sliding grooves are provided on both sides of the diverter block, and a clamping block is slidably connected in the sliding groove, and a limiting rod is fixedly installed on one side of the clamping block, and the limiting rod is slidably connected to the diverter block.

[0011] Preferably, a clamping groove is provided on one side of the inner box close to the clamping block, and a magnet is fixedly installed in the clamping groove.

[0012] Preferably, a chamber is formed between the box body and the inner box, a liquid cooling pipe is arranged in the chamber, and the liquid cooling pipe is fixedly sleeved on the inner box.

[0013] Preferably, a heat dissipation device is fixedly installed on the top of the box body, and the heat dissipation device is fixedly connected to the liquid cooling pipe.

[0014] Preferably, a box cover is fixedly mounted on one side of the box body, and a sealing ring is fixedly mounted on a side of the box cover close to the box body.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model uses an electric push rod to eject the gas in the air bag from the nozzle, thereby blowing out the arc, avoiding burning of electrical components and damage to the electric control box. When opening the box for inspection or installation of electrical components, the electric push rod pushes the installation plate to move, making it easier for workers to install electrical components in the box;

[0017] 2. The utility model controls the continuous circulation of the coolant in the liquid cooling pipe through the heat dissipation device, thereby discharging the heat in the electric control box, avoiding the performance degradation of the electrical components and prolonging the service life of the electric control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the explosion-proof electric control box structure with good sealing structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the box body and inner box structure of the utility model.

[0020] Figure 3 This is a cross-sectional view of the explosion-proof electric control box structure with good sealing structure of the utility model.

[0021] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0022] In the figure: 1. box body; 2. box cover; 3. heat dissipation device; 4. mounting plate; 5. diverter block; 6. nozzle; 7. inner box; 8. liquid cooling pipe; 9. air bag; 10. electric push rod; 11. spring; 12. support plate; 13. block; 14. limit rod; 15. snap groove; 16. magnet; 17. chamber. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-Figure 4 A distribution box with good sealing performance is shown, including a box body 1, which is used to protect the internal electrical components. A box cover 2 is fixedly installed on one side of the box body 1, and the box cover 2 is used to cooperate with the box body 1 so that the electric control box has sealing performance. A sealing ring is fixedly installed on the side of the box cover 2 close to the box body 1, and the sealing ring further enhances the sealing performance of the electric control box and prevents external gas or dust from entering the electric control box.

[0025] Taking into account that the electric control box is in a completely sealed environment, the internal heat cannot be dissipated, which may easily lead to the degradation of the performance of the electrical components and shorten the service life of the electric control box. Therefore, an inner box 7 is fixedly installed inside the box body 1. The inner box 7 cooperates with the box body 1, so that the electric control box has sealing properties and the internal heat can be well transferred out. A chamber 17 is formed between the box body 1 and the inner box 7. A liquid cooling pipe 8 is arranged in the chamber 17. The liquid cooling pipe 8 is used to transfer the heat generated by the electrical components in the inner box 7. The liquid cooling pipe 8 is fixedly mounted on the inner box 7.

[0026] Specifically, a mounting plate 4 is provided inside the inner box 7, and the mounting plate 4 is used for mounting electrical components.

[0027] Furthermore, a heat dissipation device 3 is fixedly installed on the top of the box body 1 . The heat dissipation device 3 is used to control the movement of the coolant in the liquid cooling pipe 8 . The heat dissipation device 3 is fixedly connected to the liquid cooling pipe 8 .

[0028] It should be noted that the heat dissipation device 3 is composed of common heat dissipation components in the prior art, including components such as a fan and a water pump, which will not be described in detail here.

[0029] During specific operation, the heat dissipation device 3 is started, and the coolant in the liquid cooling pipe 8 is controlled to circulate continuously through the heat dissipation device 3, so as to discharge the heat in the electric control box, avoid the performance degradation of the electrical components, and increase the service life of the electric control box.

[0030] Considering that the electric control box is not easy to open in a sealed environment, an arc will be generated when an electrical component short-circuits. If the arc is not handled in time, the surrounding electrical components will be burned and the electric control box will be damaged. Therefore, an arc protection mechanism is provided inside the inner box 7, and the arc protection mechanism adopts an air-blowing arc extinguishing method.

[0031] The arc protection mechanism includes an airbag 9, which is used to store the gas required for blowing out the arc. A spring 11 is arranged inside the airbag 9, and the spring 11 is used to reset the airbag 9 after blowing out the gas. Both ends of the spring 11 are fixedly connected with a support plate 12, and the support plate 12 is used to provide a support area between the spring 11 and the airbag 9. The support plate 12 is fixedly mounted on the inner wall of the airbag 9.

[0032] Considering that there are many electrical components installed in the electric control box, a diverter block 5 is provided on one side of the airbag 9. The diverter block 5 is used to disperse the gas blown out of the airbag 9. The diverter block 5 has an annular structure, which can fit well on the mounting plate 4. The diverter block 5 is fixedly mounted on the mounting plate 4. The airbag 9 is fixedly mounted on the mounting plate 4. The diverter block 5 is slidably connected to the inner box 7, and the inner cavity of the diverter block 5 is connected to the airbag 9.

[0033] Furthermore, a nozzle 6 is fixedly connected to the side of the diverter block 5 facing away from the airbag 9. The nozzle 6 is used to compress the gas so that the blown gas has a stronger impact force. An electric push rod 10 is fixedly installed on the side of the airbag 9 away from the diverter block 5. The electric push rod 10 is used to squeeze the airbag 9 and control the movement of the mounting plate 4. The electric push rod 10 is fixedly installed on the inner wall of the inner box 7.

[0034] Specifically, a plurality of nozzles 6 are provided.

[0035] It should be noted that an arc sensor is also provided in the inner box 7. The arc sensor is a common sensor in the prior art and will not be described in detail here.

[0036] Taking into account that it is inconvenient for workers to install electrical components due to limited space in the electrical control box, sliding grooves are provided on both sides of the shunt block 5, and a card block 13 is slidably connected in the sliding groove, and a limit rod 14 is fixedly installed on one side of the card block 13. The limit rod 14 is used to control the up and down movement of the card block 13. The limit rod 14 is slidably connected to the shunt block 5, and a snap-fit ​​groove 15 is provided on one side of the inner box 7 close to the card block 13. The snap-fit ​​groove 15 is used to cooperate with the card block 13 to fix the shunt block 5. A magnet 16 is fixedly installed in the snap-fit ​​groove 15, and the magnet 16 is used to fix the card block 13. It should be noted that the card block 13 has magnetic force, and the shunt block 5 is fixed by being attracted to the magnet 16.

[0037] During operation, the electric push rod 10 pulls the mounting plate 4 to move into the box, and the mounting plate 4 is fixed by the clamping block 13 being engaged in the clamping groove 15, thereby realizing the movement of the position of the mounting plate 4 and avoiding inconvenience for the staff during installation.

[0038] Specifically, a controller can be provided to be connected between the electric push rod 10 and the arc sensor. The arc sensor detects the arc. When the arc sensor detects that an arc is generated in the inner box 7, the controller controls the electric push rod 10 to push the airbag 9 to compress by transmitting information to the controller. The gas in the airbag 9 is ejected through the nozzle 6, thereby blowing out the arc and avoiding burning of electrical components and damage to the electrical control box.

Claims

1. A distribution box with good sealing performance, comprising a box body (1), wherein an inner box (7) is fixedly installed inside the box body (1), characterized in that: An arc-proof mechanism is arranged inside the inner box (7), and the arc-proof mechanism comprises an airbag (9). A spring (11) is arranged inside the airbag (9), and both ends of the spring (11) are fixedly connected to support plates (12), and the support plate (12) is fixedly installed on the inner wall of the airbag (9). A diverter block (5) is arranged on one side of the airbag (9), and the diverter block (5) is annular in structure. The diverter block (5) is slidably connected to the inner box (7), and the inner cavity of the diverter block (5) is connected to the airbag (9).

2. A distribution box with good sealing performance according to claim 1, characterized in that: The side of the diverter block (5) facing away from the airbag (9) is fixedly connected to a nozzle (6), and a plurality of nozzles (6) are provided. The side of the airbag (9) away from the diverter block (5) is fixedly installed with an electric push rod (10), and the electric push rod (10) is fixedly installed on the inner wall of the inner box (7).

3. A distribution box with good sealing performance according to claim 1, characterized in that: A mounting plate (4) is provided inside the inner box (7), the diverter block (5) is fixedly sleeved on the mounting plate (4), and the air bag (9) is fixedly mounted on the mounting plate (4).

4. A distribution box with good sealing performance according to claim 1, characterized in that: Sliding grooves are provided on both sides of the diverter block (5), and a clamping block (13) is slidably connected in the sliding groove. A limiting rod (14) is fixedly installed on one side of the clamping block (13), and the limiting rod (14) is slidably connected to the diverter block (5).

5. A distribution box with good sealing performance according to claim 4, characterized in that: A clamping groove (15) is provided on one side of the inner box (7) close to the clamping block (13), and a magnet (16) is fixedly installed in the clamping groove (15).

6. A distribution box with good sealing performance according to claim 1, characterized in that: A chamber (17) is formed between the box body (1) and the inner box (7), a liquid cooling pipe (8) is arranged in the chamber (17), and the liquid cooling pipe (8) is fixedly sleeved on the inner box (7).

7. A distribution box with good sealing performance according to claim 1, characterized in that: A heat dissipation device (3) is fixedly mounted on the top of the box body (1), and the heat dissipation device (3) is fixedly connected to a liquid cooling pipe (8).

8. The distribution box with good sealing performance according to claim 1, characterized in that: A box cover (2) is fixedly mounted on one side of the box body (1), and a sealing ring is fixedly mounted on a side of the box cover (2) close to the box body (1).

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