Mining flame-proof high-low voltage switch cabinet

Abstract

The utility model relates to the technical field of switch cabinets, and discloses a mining flame-proof high-low voltage switch cabinet, which comprises a cabinet body and a cabinet door, a plurality of inner box bodies are fixedly arranged in the cabinet body, two sides of each inner box body are respectively and fixedly provided with a wire inlet box and a wire outlet box, and a first cable joint and a second cable joint are respectively communicated with the wire inlet box and the wire outlet box; a base is fixedly installed at the bottom of the cabinet body, an air supply pipe is fixedly installed in the base, an air guide vertical pipe is fixedly installed on the surface of the air supply pipe and extends into an inner cavity of the cabinet body, a plurality of spray heads are arranged on the surface of the air guide vertical pipe, and a plurality of pressure relief one-way valves are fixedly installed on the side face of the cabinet body. According to the switch cabinet, the internal space of equipment is separated from the surrounding environment through the closed cabinet body, and inert gas is injected into the cabinet body through the gas supply pipe, so that dust and explosive gas can be prevented from entering the switch cabinet, generation of electric arcs can be effectively inhibited, a better explosion-proof effect is achieved, and the safety of the switch cabinet is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a flameproof high and low voltage switch cabinet for mining. Background Art

[0002] The high and low voltage switch cabinets used in the mine have high safety requirements, otherwise it is easy to cause an explosion, and dust entering the cabinet body will also cause damage to electronic components and lead to accidental power outages. The prior art discloses a high and low voltage switch cabinet for mining, with announcement number CN219760419U, which includes a switch cabinet body, an electric control switch body is arranged on the inner rear end face of the switch cabinet body, and positioning slots are symmetrically provided on the upper end face of the switch cabinet body. A heat dissipation frame is arranged on the upper end of the switch cabinet body, and a connecting component is fixed to the inner wall of the heat dissipation frame. A heat dissipation mechanism is arranged on the inner side of the connecting component. An air guide port is fixed to the center of the upper end face of the switch cabinet body, and a filter mesh layer is arranged on the lower end of the inner wall of the air guide port. The utility model can quickly guide the gas through the fan body and filter the gas through the moisture-proof filter screen, so that the gas can be introduced into the switch cabinet, and the electric control switch body can be quickly cooled. At the same time, the inclined slope can divert the gas introduced by the fan body, and then the dust and water stains on the surface of the switch cabinet can be cleaned, thereby ensuring the service life of the switch cabinet.

[0003] Then, this type of switch cabinet cannot place components that can generate sparks, arcs and dangerous temperatures into a flameproof enclosure. The flameproof enclosure is used to separate the internal space of the equipment from the surrounding environment, and the usage scenarios are very limited. In particular, the interior of the mining area contains gas and a large amount of dust. When an explosion occurs, the electronic components inside the cabinet will be damaged, and there are many safety hazards. Based on this, the existing high and low voltage switch cabinets for mining have poor flameproof effects and need further improvement. Utility Model Content

[0004] The utility model aims to provide a flameproof high and low voltage switch cabinet for mining, so as to solve the problem of poor flameproof effect of the existing flameproof high and low voltage switch cabinet for mining.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flameproof high and low voltage switch cabinet for mining, comprising a cabinet body and a cabinet door, a sealing ring is arranged on the front of the cabinet body, the cabinet door covers the sealing ring, and the cabinet door is fixedly connected to the cabinet body by bolts, and a plurality of first cable connectors and second cable connectors are fixedly installed on both sides of the cabinet body, and the first cable connectors and the second cable connectors both extend into the cabinet body.

[0006] Multiple inner boxes are fixedly installed in the cabinet, and an incoming box and an outgoing box are fixedly installed on both sides of each inner box, and the first cable connector and the second cable connector are connected to the incoming box and the outgoing box respectively; a base is fixedly installed at the bottom of the cabinet, and an air supply pipe is fixedly installed in the base, and a gas vertical pipe is fixedly installed on the surface of the gas supply pipe, which extends into the inner cavity of the cabinet. There are multiple nozzles on the surface of the gas vertical pipe, and multiple pressure relief one-way valves are fixedly installed on the side of the cabinet. Inert gas is injected into the cabinet through the air supply pipe, which can not only prevent dust and explosive gas from entering, but also effectively suppress the generation of electric arc.

[0007] In some embodiments, a plurality of partition boards are fixedly installed inside the cabinet, and the plurality of partition boards divide the inner cavity of the cabinet into a plurality of installation chambers. The inner box is respectively installed in each of the installation chambers. Partition sealing strips are fixedly installed on the front sides of the plurality of partition boards. The inner wall of the cabinet door is pressed against the surface of the partition sealing strip. The cabinet door is made of transparent material, so that the inner cavity of the cabinet presents a plurality of independent chambers, thereby avoiding mutual interference of the electrical modules and improving safety.

[0008] In some embodiments, the gas guide vertical pipe passes through multiple partition plates, each of the installation chambers has at least one nozzle, and the multiple pressure relief check valves are divided into multiple groups, each group has two pressure relief check valves, and the two pressure relief check valves in each group are respectively arranged on the side wall panels of the cabinet. The multiple groups of pressure relief check valves are respectively connected to each installation chamber so that gas can be injected into each installation chamber. When the gas in the cabinet reaches a certain pressure, it can be discharged from the pressure relief check valve in one direction.

[0009] In some embodiments, a display mounting plate is rotatably installed on the front of the inner box, and a display window and an indicator light mounting hole are opened on the front of the display mounting plate. The display mounting plate is fixed to the front of the inner box by screws, and the electronic components are placed in the inner box to form a whole, forming a complete set of electrical modules, which is convenient for assembly and placement in the switch cabinet.

[0010] In some embodiments, a cooler is fixedly installed on the back of the cabinet, an input water pipe is fixedly installed on one side of the cooler, and an output water pipe is fixedly installed on the other side of the cooler. The cooler is a plate-like structure, and a rectangular cavity is provided inside the cooler. A heat exchange conduit and a heat conducting plate are provided inside the cooler. The heat conducting plate is fixedly connected to the cooler. The heat exchange conduit is bent and coiled and placed in the cooler, and passes through each heat conducting plate. The two ends of the heat exchange conduit are respectively fixedly connected to the input water pipe and the output water pipe, so as to realize the function of active heat dissipation and ensure that the switch cabinet operates stably in a high temperature environment.

[0011] In some embodiments, the mining explosion-proof high and low voltage switchgear includes multiple cabinets, which are arranged in a linear array so that the multiple cabinets share one gas supply pipe. According to actual installation needs, multiple cabinets are used in combination to expand the capacity of the switchgear. Beneficial Effects

[0012] The utility model provides a mine flameproof high and low voltage switch cabinet, which has the following beneficial effects:

[0013] 1. The flameproof high and low voltage switchgear for mines uses a closed cabinet to separate the internal space of the equipment from the surrounding environment, and injects inert gas into the cabinet through the gas supply pipe, which can not only prevent dust and explosive gas from entering, but also effectively suppress the generation of arcs, thereby achieving better flameproof effect and greatly improving its safety.

[0014] 2. The flameproof high and low voltage switchgear for mines is equipped with an inner box, an incoming wire box and an outgoing wire box, and the electronic components are placed in the inner box to form a whole, forming a complete set of electrical modules, which is convenient for assembly and placement in the switchgear. In addition, partition boards are provided to make the inner cavity of the cabinet into multiple independent chambers, avoiding mutual interference between the electrical modules and improving safety. The switchgear is cooled by a cooler, making the switchgear run more stably in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (after removing the cabinet door);

[0017] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 This is a schematic diagram of the rear cross-section structure of the cooler.

[0019] In the figure: 1 cabinet body; 2 cabinet door; 3 sealing ring; 4 first cable connector; 5 second cable connector; 6 inner cabinet body; 7 inlet box; 8 outlet box; 9 base; 10 air supply pipe; 11 air guide riser; 12 nozzle; 13 pressure relief check valve; 14 partition board; 15 display mounting board; 16 display window; 17 indicator light mounting hole; 18 cooler; 19 input water pipe; 20 output water pipe; 21 partition sealing strip; 22 heat exchange conduit; 23 heat conduction plate. Implementation

[0020] 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.

[0021] See also Figure 1-4 The utility model provides a technical solution: a mine explosion-proof high and low voltage switch cabinet, including a cabinet body 1 and a cabinet door 2, a sealing ring 3 is arranged on the front of the cabinet body 1, the cabinet door 2 covers the sealing ring 3, and the cabinet door 2 is fixedly connected to the cabinet body 1 by bolts, a plurality of partition plates 14 are fixedly installed inside the cabinet body 1, the plurality of partition plates 14 divide the inner cavity of the cabinet body 1 into a plurality of installation chambers, the inner box body 6 is respectively installed in each installation chamber, the front of the plurality of partition plates 14 are fixedly installed with partition sealing strips 21, the inner wall of the cabinet door 2 is pressed against the surface of the partition sealing strip 21, and the cabinet door 2 is made of transparent material.

[0022] A plurality of first cable connectors 4 and second cable connectors 5 are respectively fixedly mounted on both sides of the cabinet 1 , and both the first cable connectors 4 and the second cable connectors 5 extend into the cabinet 1 .

[0023] A plurality of inner boxes 6 are fixedly installed in the cabinet 1, and an incoming box 7 and an outgoing box 8 are fixedly installed on both sides of each inner box 6, and the first cable connector 4 and the second cable connector 5 are connected to the incoming box 7 and the outgoing box 8 respectively; Figure 3 As shown, a display mounting plate 15 is rotatably mounted on the front of the inner box 6, and a display window 16 and an indicator light mounting hole 17 are provided on the front of the display mounting plate 15. The display mounting plate 15 is fixed to the front of the inner box 6 by screws, and electronic components are mounted in the inner box 6, with the display screen placed at the display window 16.

[0024] A base 9 is fixedly installed at the bottom of the cabinet 1, and an air supply pipe 10 is fixedly installed inside the base 9. An air guide riser 11 is fixedly installed on the surface of the air supply pipe 10. The air guide riser 11 extends into the inner cavity of the cabinet 1. A plurality of nozzles 12 are provided on the surface of the air guide riser 11. A plurality of pressure relief one-way valves 13 are fixedly installed on the side of the cabinet 1. When the gas in the cabinet 1 reaches a certain pressure, it can only be discharged from the pressure relief one-way valve 13 to the outside of the cabinet 1 in one direction.

[0025] Among them, the gas guide vertical pipe 11 passes through multiple partition plates 14, each installation chamber has at least one nozzle 12, and multiple pressure relief check valves 13 are divided into multiple groups, each group of pressure relief check valves 13 has two, and the two pressure relief check valves 13 in each group are respectively arranged on the side wall panels of the cabinet 1. The multiple groups of pressure relief check valves 13 are respectively connected to each installation chamber, and dust-removed air or inert gas (such as argon) is injected into the cabinet 1 through the air supply pipe 10, so that the cabinet 1 is in a positive pressure state to prevent external flammable gases and dust from entering the cabinet 1.

[0026] By providing an inner box 6, an incoming line box 7 and an outgoing line box 8, electronic components are placed in the inner box 6 to form a whole, forming a complete set of electrical modules, which is convenient for assembly and placement in the switch cabinet. In addition, a partition plate 14 is provided to make the inner cavity of the cabinet 1 present multiple independent chambers, thereby avoiding mutual interference among the electrical modules and improving safety.

[0027] In this embodiment, a cooler 18 is fixedly installed on the back of the cabinet 1, an input water pipe 19 is fixedly installed on one side of the cooler 18, and an output water pipe 20 is fixedly installed on the other side of the cooler 18. The cooler 18 is a plate-shaped structure, and a rectangular cavity is provided inside the cooler 18. A heat exchange conduit 22 and a heat conducting plate 23 are provided inside the cooler 18. The heat conducting plate 23 is fixedly connected to the cooler 18. The heat exchange conduit 22 is bent and coiled and placed in the cooler 18, and passes through each heat conducting plate 23. The two ends of the heat exchange conduit 22 are respectively fixedly connected to the input water pipe 19 and the output water pipe 20. Coolant is injected into the heat exchange conduit 22 from the input water pipe 19 to absorb the heat of the heat conducting plate 23. By setting the cooler 18, the switch cabinet is cooled, so that the switch cabinet can operate more stably in a high temperature environment.

[0028] The mine flameproof high and low voltage switch cabinet comprises a plurality of cabinets 1, which are arranged in a linear array so that the plurality of cabinets 1 share a gas supply pipe 10. The plurality of cabinets 1 are used in combination to expand the capacity of the switch cabinet.

[0029] The mine flameproof high and low voltage switchgear has a closed cabinet body 1, which uses the cabinet body 1 to separate the internal space of the equipment from the surrounding environment, and injects inert gas into the cabinet body 1 through the gas supply pipe 10, which can not only prevent dust and explosive gas from entering, but also effectively suppress the generation of electric arcs, thereby achieving a better flameproof effect and greatly improving its safety.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flameproof high and low voltage switch cabinet for mining, comprising a cabinet body (1) and a cabinet door (2), characterized in that: The front of the cabinet (1) is provided with a sealing ring (3), the cabinet door (2) covers the sealing ring (3), and the cabinet door (2) is fixedly connected to the cabinet (1) by bolts, and a plurality of first cable connectors (4) and second cable connectors (5) are respectively fixedly installed on both sides of the cabinet (1), and the first cable connectors (4) and the second cable connectors (5) both extend into the cabinet (1); A plurality of inner boxes (6) are fixedly installed in the cabinet (1), an incoming wire box (7) and an outgoing wire box (8) are fixedly installed on both sides of each inner box (6), and the first cable connector (4) and the second cable connector (5) are respectively connected to the incoming wire box (7) and the outgoing wire box (8); A base (9) is fixedly mounted on the bottom of the cabinet (1), an air supply pipe (10) is fixedly mounted inside the base (9), an air guide vertical pipe (11) is fixedly mounted on the surface of the air supply pipe (10), the air guide vertical pipe (11) extends into the inner cavity of the cabinet (1), a plurality of nozzles (12) are mounted on the surface of the air guide vertical pipe (11), and a plurality of pressure relief one-way valves (13) are fixedly mounted on the side of the cabinet (1).

2. The flameproof high and low voltage switch cabinet for mining according to claim 1 is characterized in that: A plurality of partition plates (14) are fixedly installed inside the cabinet (1), and the plurality of partition plates (14) divide the inner cavity of the cabinet (1) into a plurality of installation chambers, and the inner box (6) is respectively installed in each of the installation chambers.

3. The flameproof high and low voltage switch cabinet for mining according to claim 2 is characterized in that: The gas guide riser (11) passes through a plurality of partition plates (14), each of the installation chambers has at least one nozzle (12), and the plurality of pressure relief one-way valves (13) are divided into a plurality of groups, each group of pressure relief one-way valves (13) has two, and the two pressure relief one-way valves (13) in each group are respectively arranged on the side wall plates of the cabinet (1), and the plurality of groups of pressure relief one-way valves (13) are respectively connected to each installation chamber.

4. The flameproof high and low voltage switch cabinet for mining according to claim 3 is characterized in that: The front surfaces of the plurality of partition plates (14) are all fixedly mounted with partition sealing strips (21); the inner wall of the cabinet door (2) is pressed tightly against the surface of the partition sealing strip (21); and the cabinet door (2) is made of a transparent material.

5. The flameproof high and low voltage switch cabinet for mining according to claim 4 is characterized in that: A display mounting plate (15) is rotatably mounted on the front of the inner box (6); a display window (16) and an indicator light mounting hole (17) are provided on the front of the display mounting plate (15); the display mounting plate (15) is fixedly connected to the front of the inner box (6) by screws.

6. The flameproof high and low voltage switch cabinet for mining according to claim 5 is characterized in that: A cooler (18) is fixedly mounted on the back of the cabinet (1), an input water pipe (19) is fixedly mounted on one side of the cooler (18), and an output water pipe (20) is fixedly mounted on the other side of the cooler (18).

7. The flameproof high and low voltage switch cabinet for mining according to claim 6 is characterized in that: The cooler (18) is a plate-shaped structure, and a rectangular cavity is provided inside the cooler (18). A heat exchange conduit (22) and a heat conducting plate (23) are provided inside the cooler (18). The heat conducting plate (23) is fixedly connected to the cooler (18). The heat exchange conduit (22) is bent and coiled and placed inside the cooler (18), and passes through each heat conducting plate (23). The two ends of the heat exchange conduit (22) are respectively fixedly connected to the input water pipe (19) and the output water pipe (20).

8. The flameproof high and low voltage switch cabinet for mining according to claim 7 is characterized in that: The flameproof high and low voltage switch cabinet for mining comprises a plurality of cabinet bodies (1), wherein the plurality of cabinet bodies (1) are arranged in a linear array so that the plurality of cabinet bodies (1) share a common gas supply pipe (10).

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