Mine distribution box

Abstract

The utility model discloses a mine distribution box which comprises a cabinet body and a cabinet door hinged to the front face of the cabinet body, a first heat dissipation plate and a second heat dissipation plate are horizontally arranged in an inner cavity of the cabinet body, a first heat dissipation cavity is defined by the top of the first heat dissipation plate and the inner cavity of the cabinet body, and a second heat dissipation cavity is defined by the bottom of the second heat dissipation plate and the inner cavity of the cabinet body; a wire placing frame is arranged between the first heat dissipation plate and the second heat dissipation plate, airflow channels are formed between the two sides of the wire placing frame and the side walls of the cabinet body, and the second heat dissipation cavity can be communicated with the first heat dissipation cavity through the airflow channels. According to the mine distribution box, the inner cavity of the cabinet body is divided into the first heat dissipation cavity and the second heat dissipation cavity through the first heat dissipation plate and the second heat dissipation plate, the first heat dissipation cavity and the second heat dissipation cavity are communicated through the airflow channel between the wire placing frame and the side wall of the cabinet body, a flow channel for gas convection is formed, and therefore the gas convection effect is enhanced; and the heat dissipation effect of the distribution box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, and particularly relates to a mine distribution box. Background Art

[0002] The distribution box assembles switch equipment, measuring instruments, protection appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirements to form a low-voltage power distribution device. During normal operation, the circuit can be switched on or off manually or automatically. In case of a fault or abnormal operation, the protection appliance is used to cut off the circuit or give an alarm. The measuring instruments can display various parameters during operation, and some electrical parameters can also be adjusted to prompt or send a signal for deviation from the normal working state. It is commonly used in various power generation, distribution and substation, and the power distribution box will be applied to coal mines.

[0003] However, in the production of mining areas, the environment where the distribution box usually needs to be installed is relatively harsh. During the long-term use of the distribution box, a large amount of heat will accumulate inside, which has an adverse effect on the normal use of electrical equipment.

[0004] In view of this, it is necessary to propose an improved mine distribution box to solve the above problems. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: how to solve the problem that the heat dissipation performance of the existing mine distribution box is poor, resulting in an adverse effect on the normal use of electrical equipment.

[0006] To solve the above technical problem, the utility model provides the following technical solutions:

[0007] A mine distribution box includes a cabinet body and a cabinet door hinged to the front of the cabinet body. A first heat dissipation plate and a second heat dissipation plate are horizontally arranged in the inner cavity of the cabinet body. A first heat dissipation cavity is formed between the top of the first heat dissipation plate and the inner cavity of the cabinet body, and a second heat dissipation cavity is formed between the bottom of the second heat dissipation plate and the inner cavity of the cabinet body;

[0008] A wire placement frame is arranged between the first heat dissipation plate and the second heat dissipation plate. Air flow channels are formed between both sides of the wire placement frame and the side walls of the cabinet body. The second heat dissipation cavity can be communicated with the first heat dissipation cavity through the air flow channels.

[0009] In the mine distribution box of the present application, the inner cavity of the cabinet body is separated by the first heat dissipation plate and the second heat dissipation plate to form a first heat dissipation cavity and a second heat dissipation cavity. The first heat dissipation cavity and the second heat dissipation cavity are communicated through the air flow channels between the wire placement frame and the side walls of the cabinet body, forming a flow path for gas convection, thereby strengthening the gas convection effect and improving the heat dissipation effect of the distribution box.

[0010] As a further solution of the present utility model: air outlet holes and air inlet holes are respectively formed on both side walls of the first heat dissipation cavity and the second heat dissipation cavity, and the air outlet holes and the air inlet holes are arranged obliquely upward.

[0011] As a further solution of the present utility model: the first heat dissipation plate and the second heat dissipation plate are respectively arranged at the upper and lower positions of the inner cavity of the cabinet.

[0012] As a further solution of the present utility model: a plurality of heat dissipation fins are equidistantly arranged on both side walls of the wire placement frame, and the plurality of heat dissipation fins extend into the air flow channel.

[0013] As a further solution of the present utility model: the heat dissipation fins are made of aluminum alloy material, and the structure of the heat dissipation fins is cylindrical or strip-shaped, and its length is 10 mm to 50 mm.

[0014] As a further solution of the present utility model: a switch instrument is installed on the wire placement frame.

[0015] As a further solution of the present utility model: phase change heat conduction layers are further arranged on both side walls of the wire placement frame, and the plurality of heat dissipation fins are formed on the phase change heat conduction layers, wherein the thickness of the phase change heat conduction layer is 5 mm to 10 mm.

[0016] As a further solution of the present utility model: support feet are arranged at the four corner positions of the bottom of the cabinet.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] First of all, for the mine distribution box of the present application, the inner cavity of the cabinet is divided into a first heat dissipation cavity and a second heat dissipation cavity by the first heat dissipation plate and the second heat dissipation plate. The first heat dissipation cavity and the second heat dissipation cavity are communicated through the air flow channel between the wire placement frame and the side wall of the cabinet, forming a flow channel for gas convection, thereby strengthening the gas convection effect and improving the heat dissipation effect of the distribution box;

[0019] Secondly, for the mine distribution box provided by the present application, a plurality of heat dissipation fins are arranged on both side walls of the wire placement frame, so that the heat generated by the operation of the instruments and meters of the distribution box can be quickly and timely exported, avoiding the accumulation of heat from affecting the normal operation of the instruments and meters; at the same time, the gas convection in the air flow channel can also quickly take out the heat exported by the heat dissipation fins, thereby further improving the heat dissipation effect of the distribution box;

[0020] Finally, for the mine distribution box provided by the present application, phase change heat conduction layers are also arranged on both side walls of the wire placement frame. The phase change heat conduction layer can store a large amount of heat through rapid phase change, so the temperature of the instruments and meters can be effectively controlled; in addition, the metal foam material in the phase change heat conduction layer has good heat conduction effect and can be used as a heat conduction skeleton, further improving the heat dissipation effect. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a mine distribution box according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic cross-sectional structural diagram of a mine distribution box according to an embodiment of the present invention;

[0023] Description of the reference numerals:

[0024] 1, cabinet body; 11, cabinet door; 12, strip hole; 13, support feet; 14, first heat dissipation cavity; 15, second heat dissipation cavity; 16, air flow channel;

[0025] 2, wire placement frame;

[0026] 31, first heat dissipation plate; 32, second heat dissipation plate;

[0027] 4, phase change heat conduction layer;

[0028] 5, heat dissipation fins. Detailed Description of the Invention

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of 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 fall within the protection scope of the present invention.

[0030] Referring to Figure 1 and Figure 2 , a mine distribution box includes a cabinet body 1 and a cabinet door 11 hinged to the front of the cabinet body 1. A horizontally arranged first heat dissipation plate 31 and a second heat dissipation plate 32 are provided in the inner cavity of the cabinet body 1. Among them, both the first heat dissipation plate 31 and the second heat dissipation plate 32 are hollow plates, and they are respectively arranged at the upper and lower positions of the inner cavity.

[0031] Furthermore, the first heat dissipation plate 31 and the second heat dissipation plate 32 are made of materials with good thermal conductivity, preferably metal plates, such as aluminum plates, which can be fixed to the inner side wall of the cabinet body 1 by welding, or installed on the inner side wall of the cabinet body 1 by fixing methods such as fixing bolts and pins.

[0032] Referring to Figure 1 and Figure 2, a wire placement frame 2 is also provided inside the cabinet body 1, and various switches and instruments are installed on the wire placement frame 2. In this embodiment, the wire placement frame 2 is a square installation frame, which is arranged between the first heat dissipation plate 31 and the second heat dissipation plate 32. The upper end and the lower end of the wire placement frame 2 can be respectively fixed on the first heat dissipation plate 31 and the second heat dissipation plate 32, and the connection part can be fixed by welding, or fixed by fixing bolts, pin shafts, etc. for fixed installation.

[0033] Referring to Figure 1 and Figure 2 , a first heat dissipation cavity 14 is enclosed between the first heat dissipation plate 31 and the inner cavity of the cabinet body 1, and a second heat dissipation cavity 15 is enclosed between the second heat dissipation plate 32 and the inner cavity of the cabinet body 1; air outlet holes and air inlet holes are respectively opened on the side walls of the first heat dissipation cavity 14 and the second heat dissipation cavity 15; in addition, an air flow channel 16 is formed between the wire placement frame 2 and the side wall of the cabinet body 1. Therefore, the second heat dissipation cavity 15 can be communicated with the first heat dissipation cavity 14 through the air flow channel 16.

[0034] Referring to Figure 1 and Figure 2 , a plurality of support feet 13 are provided at the bottom of the cabinet body 1, preferably four support feet 13, which are respectively arranged at the four corners of the bottom surface of the cabinet body 1.

[0035] Referring to Figure 1 and Figure 2 , both the air inlet hole and the air outlet hole are strip-shaped holes 12 arranged horizontally. Further, the strip-shaped hole 12 is a strip-shaped hole 12 extending obliquely upward. The strip-shaped hole 12 extending obliquely upward can not only prevent rainwater from entering the inside of the cabinet body 1 through the air inlet hole and the air outlet hole, but also block most of the dust because there is a lot of dust in the mine shaft, avoiding it from entering the inside of the cabinet body 1 and affecting the use of the equipment.

[0036] Referring to Figure 1 and Figure 2 , a plurality of heat dissipation fins 5 are also provided on both side walls of the wire placement frame 2, and one end of these heat dissipation fins 5 extends into the air flow channel 16. These heat dissipation fins 5 are made of a metal material with good thermal conductivity. For example, they can be made of aluminum alloy, which has good thermal conductivity. Therefore, the heat dissipation fins 5 can quickly and timely export the heat generated by the operation of the electrical distribution box instruments, avoiding the accumulation of heat and affecting the normal operation of the instruments; at the same time, the gas convection in the air flow channel 16 can also quickly take out the heat exported by the heat dissipation fins 5, thereby further improving the heat dissipation effect of the electrical distribution box.

[0037] Further, the structure of the heat dissipation fins 5 can be cylindrical or strip-shaped, and its length can be 10 mm to 50 mm, such as 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, etc.

[0038] Referring to Figure 1 and Figure 2, phase change heat conduction layers 4 are further provided on both side walls of the wire placing frame 2, and a plurality of heat dissipation fins 5 are formed on the phase change heat conduction layer 4. The phase change heat conduction layer 4 is made of a phase change material. Since the phase change material will undergo a phase change and absorb a large amount of heat when the temperature rises, it can quickly absorb the heat generated by the instruments and meters in the wire placing frame 2 and effectively control the temperature of the instruments and meters. The thickness of the phase change heat conduction layer 4 in the present utility model is not limited, preferably 5 mm to 10 mm, for example, it can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0039] Furthermore, the phase change heat conduction layer 4 can be made of commonly used phase change materials. In a preferred embodiment, the phase change heat conduction layer 4 can be prepared from a metal foam material and an organic phase change material in a mass ratio of 1:3. The metal foam material can be a nickel foam material, and the organic phase change material is PEG3000. In this embodiment, adding the metal foam material to the organic phase change material is mainly to form a heat conduction skeleton and improve the heat conduction performance of the phase change heat conduction layer 4. On the one hand, it can quickly guide the heat generated by the instruments and meters into the phase change heat conduction layer 4, and on the other hand, it can quickly transfer the heat in the phase change heat conduction layer 4 to the heat dissipation fins 5.

[0040] The specific operation principle of this application is as follows:

[0041] In the present utility model, the hollow first heat dissipation plate 31 and the second heat dissipation plate 32 have good heat conductivity and can quickly conduct the heat generated by the operation of the instruments and meters to the first heat dissipation cavity 14 and the second heat dissipation cavity 15, which is conducive to heat dissipation. In addition, air outlet holes and air inlet holes are respectively formed on the side walls of the first heat dissipation cavity 14 and the second heat dissipation cavity 15, and the second heat dissipation cavity 15 is communicated with the first heat dissipation cavity 14 through an air flow channel 16, that is, a convection channel of air inlet hole → second heat dissipation cavity 15 → air flow channel 16 → first heat dissipation cavity 14 → air outlet hole is formed in the cabinet body 1. The heat generated by the operation of the instruments and meters in the cabinet body 1 will heat the air, and the hot air will rise along the air flow channel 16, enter the first heat dissipation cavity 14, and be discharged through the air outlet hole; while the cold air will enter the second heat dissipation cavity 15 through the air inlet hole, the temperature will rise after heat transfer, and then enter the air flow channel 16, thus completing the convection cycle of the air flow. The existence of this convection cycle promotes the air flow in the cabinet body 1, thereby quickly transferring the heat in the cabinet body 1 and improving the heat dissipation performance of the power distribution cabinet.

[0042] In summary, the mine power distribution box provided by the present utility model improves the heat dissipation performance of the power distribution box, can reduce the entry of rainwater and dust into the interior of the cabinet body 1, improves the working environment of the power distribution box, and prolongs the service life of the instruments and meters in the power distribution box.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mine distribution box, comprising a cabinet (1) and a cabinet door (11) hinged to the front of the cabinet, characterized in that: A first heat dissipation plate (31) and a second heat dissipation plate (32) are horizontally arranged in the inner cavity of the cabinet (1); a first heat dissipation cavity (14) is formed between the top of the first heat dissipation plate (31) and the inner cavity of the cabinet (1); and a second heat dissipation cavity (15) is formed between the bottom of the second heat dissipation plate (32) and the inner cavity of the cabinet (1); A wire frame (2) is provided between the first heat dissipation plate (31) and the second heat dissipation plate (32), air flow channels are formed between the two sides of the wire frame (2) and the side walls of the cabinet (1), and the second heat dissipation cavity can be connected to the first heat dissipation cavity through the air flow channels; Phase change heat conducting layers are also arranged on the two side walls of the wire frame, and the phase change heat conducting layers are made of commonly used phase change materials.

2. A mine distribution box according to claim 1, characterized in that: Air outlet holes and air inlet holes are respectively provided on the two side walls of the first heat dissipation cavity and the second heat dissipation cavity, wherein the air outlet holes and the air inlet holes are arranged upwardly in an inclined manner.

3. A mine distribution box according to claim 1, characterized in that: The first heat dissipation plate (31) and the second heat dissipation plate (32) are respectively arranged at upper and lower positions of the inner cavity of the cabinet (1).

4. A mine distribution box according to claim 1, characterized in that: Both side walls of the wire frame are equidistantly provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins extend into the air flow channel.

5. A mine distribution box according to claim 4, characterized in that: The heat dissipation fins are made of aluminum alloy, and the structure of the heat dissipation fins is cylindrical or strip-shaped, and the length thereof is 10 mm to 50 mm.

6. A mine distribution box according to claim 4, characterized in that: A switch instrument is installed on the wire setting frame.

7. A mine distribution box according to claim 4, characterized in that: Phase-change heat-conducting layers are also provided on the two side walls of the wire frame, and a plurality of heat-dissipating fins are formed on the phase-change heat-conducting layers, wherein the thickness of the phase-change heat-conducting layers is 5 mm to 10 mm.

8. A mine distribution box according to claim 7, characterized in that: Support feet (13) are provided at the four corners of the bottom of the cabinet (1).

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