Distribution box

Abstract

The utility model discloses a power distribution box, which comprises a cabinet body, a wiring frame, a support frame, a power distribution assembly and a heat dissipation assembly. Wherein the wiring frames are fixedly arranged on the inner side wall of the cabinet body, and the interior of each wiring frame is communicated with external air; the support frame is arranged on the wiring frame and is separated from the inner side wall of the cabinet body by a first preset distance; the power distribution assembly comprises a power distribution element arranged on the supporting frame and a wire arranged in the wiring frame, the wire penetrates through the wiring frame, and the cabinet body connects the power distribution element with an external cable; the heat dissipation assembly is arranged in the wiring frame and used for dissipating heat of the wire. According to the utility model, the heat generated by the power distribution element is directly dissipated through the heat dissipation assembly by using the good thermal conductivity of the metal wire, and the wiring frame can gather the heat dissipation path of the heat dissipation assembly, so that the heat dissipation efficiency of the heat dissipation assembly is high, and a large area of heat dissipation plates do not need to be installed on the whole power distribution box shell. The device is integrally light, easy to install, low in cost and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a distribution box. Background Art

[0002] The distribution box is a conventional transfer station for connecting internal and external electrical lines in modern power transmission. The distribution box is a low-voltage distribution box that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the requirements of electrical wiring. In normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches. In case of failure or abnormal operation, the circuit can be cut off or an alarm can be sounded with the help of protective electrical appliances.

[0003] The internal components of the current distribution box are compact and need to be cooled to ensure long-term operation. Chinese Patent: Heat Dissipation Distribution Box (Application No.: 201521105606.8) discloses that an upper heat conduction plate is arranged on the lower side of the top plate, a heat dissipation cavity is formed between the upper heat conduction plate and the top plate, an exhaust fan connected to the heat dissipation cavity is arranged on the top plate, the bottom plate is an aluminum plate, and heat dissipation fins are arranged on the lower side of the bottom plate. This patent achieves the purpose of heat dissipation by installing a heat dissipation structure on the outside of the distribution box and changing the material of the distribution box to an alloy plate with good heat dissipation performance, which makes the entire distribution box high in cost and occupies a large space. Chinese Patent: A distribution box with good thermal insulation and high cooling efficiency (application number: 202122944475.4) discloses that the heat dissipation fins are welded and connected on the back of the inner cabinet, and a heat exchange copper plate is installed on one side of the heat dissipation fin by bolts. A semiconductor refrigeration plate is arranged on one side of the heat exchange copper plate, and a glass fiber mat is glued and connected to the inner wall of the outer cabinet. The patent dissipates heat by installing semiconductor refrigeration plates and glass fiber mats, wherein the glass fiber mats completely lay the upper and lower bottom surfaces of the distribution box, and use semiconductor refrigeration plates to cover the sides of the distribution box for heat dissipation, which makes the entire distribution box costly and has harsh conditions for use. Utility Model Content

[0004] The main purpose of the utility model is to provide a distribution box to solve the problems of high manufacturing cost and large occupied space of the distribution box in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A distribution box comprises a cabinet body;

[0007] A support frame, fixedly mounted on the inner wall of the cabinet;

[0008] At least one wiring frame, fixedly mounted on the support frame and spaced apart from the inner wall of the cabinet by a first preset distance, the interior of each wiring frame being in communication with the external air;

[0009] A power distribution assembly, comprising a power distribution element mounted on the support frame and a wire mounted in the wiring frame, wherein the wire runs through the wiring frame and the cabinet to connect the power distribution element with an external cable;

[0010] At least one heat dissipation component is installed in the wiring frame and is used to dissipate heat from the wires.

[0011] As a further improvement of the present invention, the wiring frame includes a first horizontal edge, a first vertical edge, a second horizontal edge, and a second vertical edge connected in sequence from end to end, the first vertical edge and the second vertical edge are respectively provided with a first mounting piece for being installed on the support frame, first mounting holes matching the first mounting piece are respectively provided on both ends of the support frame, second mounting pieces for fixing the support frame on the cabinet are respectively provided on both ends of the support frame, and a second mounting hole matching the second mounting piece is provided on the side wall of the cabinet.

[0012] As a further improvement of the present invention, the heat dissipation assembly includes at least four fan groups, and at least one fan group is installed on the first horizontal side, the first vertical side, the second horizontal side, and the second vertical side respectively.

[0013] As a further improvement of the utility model, the heat dissipation assembly includes at least four liquid cooling strips for auxiliary heat dissipation, and at least two liquid cooling strips are installed on each wiring frame.

[0014] As a further improvement of the present invention, a plurality of ventilation holes are evenly arranged at a second preset distance on a surface of the wiring frame adjacent to the power distribution element, and the heat dissipation component assists in dissipating the heat of the power distribution element through the ventilation holes.

[0015] As a further improvement of the utility model, a ventilation hole is opened on the side of the cabinet, and a filter screen is installed on the ventilation hole to prevent foreign matter from entering.

[0016] As a further improvement of the present invention, an opening is provided on the side of the cabinet body, a cabinet door is covered on the opening, and one side of the cabinet door is rotatably connected to the cabinet body.

[0017] As a further improvement of the utility model, the distribution box also includes a controller and a temperature detection component installed on the cabinet door, the controller is electrically connected to the heat dissipation components respectively, the detection end of the temperature detection component is facing the distribution element, and the controller detects the surface temperature of the distribution element through the temperature detection component and controls the heat dissipation component to be turned on or off.

[0018] As a further improvement of the utility model, a sealing member for waterproofing is installed on the opening, and the shape of the sealing member matches the shape of the cabinet door.

[0019] As a further improvement of the utility model, a viewport for inspecting the power distribution components is also provided on the cabinet door, and a transparent plate is covered on the viewport.

[0020] The utility model arranges a wiring frame on the inner wall of the cabinet, and arranges heat dissipation wires of the heat dissipation assembly in the wiring frame, and utilizes the good thermal conductivity of the metal wire itself to directly dissipate the heat generated by the distribution element through the heat dissipation assembly. At the same time, the wiring frame can gather the heat dissipation path of the heat dissipation assembly (for example, gathering the wind generated by the fan to form an air duct, attaching a liquid cooling strip to the wiring frame, etc.), so that the heat dissipation efficiency of the heat dissipation assembly is high, and there is no need to install a large area of ​​heat dissipation panels on the outer shell of the entire distribution box. The device is overall light, easy to install, low in cost, and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the power distribution box of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the power distribution box of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of the power distribution box of the utility model;

[0024] Figure 4 A top perspective view of a support frame and a fan assembly of an embodiment of a power distribution box of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the power distribution components of an embodiment of the power distribution box of the utility model;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of a liquid cooling strip of an embodiment of a power distribution box of the utility model;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the vent and filter screen of an embodiment of the power distribution box of the utility model;

[0028] Figure 8 It is a schematic cross-sectional view of the three-dimensional structure of a water cooling assembly in the environment of the first vertical side aa cross section and the second vertical side bb cross section of an embodiment of the power distribution box of the utility model;

[0029] Fig. 9 This is a schematic diagram of the three-dimensional structure assembly state of an embodiment of the power distribution box of the utility model;

[0030] Description of the serial numbers: cabinet 1, support frame 2, wiring frame 3, power distribution component 4, heat dissipation component 5, controller 6, temperature detection component 7, wireless communication component 8, second mounting hole 11, ventilation hole 12, ventilation port 13, filter 14, opening 15, cabinet door 16, seal 17, viewport 18, transparent plate 19, first mounting hole 21, second mounting part 22, first horizontal edge 31, first vertical edge 32, second horizontal edge 33, second vertical edge 34, first mounting part 35, power distribution element 41, wire 42, fan group 51, liquid cooling strip 52, interlayer pipe 53, first pipe layer 531, second pipe layer 532 interlayer 533, water pump 54. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] Figure 1 An embodiment of the utility model distribution box is shown, see Figure 1 In this embodiment, the distribution box includes a cabinet 1, a support frame 2, a wiring frame 3, a distribution component 4, and a heat dissipation component 5.

[0033] Among them, the support frame 2 is fixedly mounted on the inner wall of the cabinet 1, the wiring frame 3 is fixedly mounted on the support frame 2 and is spaced from the inner wall of the cabinet 1 by a first preset distance, and each wiring frame has at least one end that passes through the cabinet 1 and is connected to the external air; the distribution component 4 includes a distribution element 41 mounted on the support frame 2 and a wire 42 installed in the wiring frame 3, and the wire 42 respectively passes through the wiring frame 3 and the cabinet 1 to connect the distribution element 41 with the external cable; the heat dissipation component 5 is installed in the wiring frame 3, and is used to dissipate the heat of the wire 42.

[0034] Preferably, this embodiment selects two routing frames 3 to be installed on two supporting frames 2 respectively, wherein the two routing frames 3 can be arranged side by side or in parallel, the adjacent sides of the two routing frames 3 can be shared, and the shapes of the two routing frames 3 form a "sun" shape or a horizontal "sun" shape.

[0035] Further, see Figure 2 Each routing frame 3 includes a first horizontal edge 31, a first vertical edge 32, a second horizontal edge 33, and a second vertical edge 34 connected in sequence end to end, and each routing frame 3 forms a rectangle.

[0036] Among them, if two routing frames 3 are arranged side by side, the first vertical edge 32 of one routing frame 3 is connected to the second vertical edge 34 of the other routing frame 3; if two routing frames 3 are arranged side by side, the first horizontal edge 31 of one routing frame 3 is connected to the second horizontal edge 33 of the other routing frame.

[0037] Preferably, in this embodiment, two routing frames 3 are arranged in parallel.

[0038] Among them, see Figure 3 In each wiring frame 3, a first mounting member 35 for mounting on the support frame 2 is respectively provided on the first vertical edge 32 and the second vertical edge 34, and a first mounting hole 21 matching the first mounting member 35 is respectively provided on both ends of the support frame 2, and a second mounting member 22 for fixing on the cabinet 1 is respectively provided on both ends of the support frame 2, and a second mounting hole 11 matching the second mounting member 22 is provided on the side wall of the cabinet 1.

[0039] Further, see Figure 4 The heat dissipation component 5 can be configured to dissipate heat by wind, and includes six fan groups 51, and one fan group 51 is respectively arranged at the edge or four corners of each wiring frame 3. That is, one fan group 51 is respectively installed at the first horizontal edge 31, the first vertical edge 32, the second horizontal edge 33, and the second vertical edge 34 of each wiring frame 3, or one fan group 51 is installed at the interconnection of the first horizontal edge 31, the first vertical edge 32, the second horizontal edge 33, and the second vertical edge 34 of each wiring frame 3.

[0040] Preferably, if two wiring frames 3 are arranged in parallel, only two fan groups 51 may be arranged on the mutually connected side, that is, the two parallel wiring frames 3 use a total of six fan groups 51 .

[0041] Preferably, the output directions of the six fan groups 51 are clockwise or counterclockwise to form a circulating air duct in the two parallel wiring frames 3 .

[0042] Preferably, see Figure 5 The cross-sectional shape of each wiring frame 3 can be set to a rectangle, that is, the first horizontal side 31, the first vertical side 32, the second horizontal side 33, and the second vertical side 34 of each wiring frame 3 are all hollow cuboids, one set of opposite faces of the cuboid is parallel to the inner wall of the cabinet 1, and the other set of opposite faces of the rectangle is perpendicular to the inner wall of the cabinet 1; a plurality of ventilation holes 12 for assisting the heat dissipation of the power distribution element 41 are respectively provided at preset intervals on the opposite faces perpendicular to the inner wall of the cabinet 1.

[0043] Further, see Figure 6The heat dissipation assembly 5 also includes eight liquid cooling bars 52 , and a liquid cooling bar 52 is respectively installed on the first horizontal side 31 , the first vertical side 32 , the second horizontal side 33 , and the second vertical side 34 of each wiring frame 3 .

[0044] Preferably, if two wiring frames 3 are arranged in parallel, only one liquid cooling strip 52 may be provided on the side that is connected to each other, that is, a total of six liquid cooling strips 52 are used for the two parallel wiring frames 3 .

[0045] Further, see Figure 7 A vent 13 is provided on the side of the cabinet 1, and a filter 14 is installed on the vent 13 to prevent foreign matter from entering.

[0046] Preferably, a filter (not shown here) may be installed near the penetration point of the input cable or output wire 42 that passes through the distribution box to prevent foreign matter from entering the distribution box through the input cable or output wire 42.

[0047] Preferably, see Figure 8 , this embodiment can also choose liquid cooling. Figure 8 In order to cut a corner of the support frame 2 to form an aa section and a bb section, wherein the aa section is located at the first vertical edge 32 and the bb section is located at the second horizontal edge 33, the heat dissipation component 5 includes a sandwich pipe 53 installed in each wiring frame 3 for accommodating coolant, the sandwich pipe 53 includes two concentric first pipe layers 531 and second pipe layers 532, wherein the diameter of the first pipe layer 531 is smaller than the diameter of the second pipe layer 532, the cavity enclosed by the first pipe layer 531 is used to arrange the wires 42, the sandwich 533 between the first pipe layer 531 and the second pipe layer 532 is used to accommodate coolant, and the outer wall of the second pipe layer 532 is abutted against the inner wall of the wiring frame 3.

[0048] Furthermore, a water pump 54 connected to the interlayer 533 is installed in the cabinet 1. The input end and the output end of the water pump 54 are both connected to the interlayer 533. The water pump 54 is used to extract the coolant in the interlayer 533 through the input end and then pump it out through the output end to drive the coolant in the interlayer to flow and improve the heat dissipation efficiency.

[0049] It should be noted that the power distribution element 41 includes common electrical equipment such as switchgear, measuring instruments, protective devices and auxiliary equipment. The specific structure, arrangement and connection relationship of each electrical equipment in the power distribution element 41 are all prior art and are not the focus of this embodiment. This embodiment will represent the installation area of ​​the power distribution element 41 in the form of a box area in the accompanying drawings. The detailed structure and internal connection relationship of each sub-component in the power distribution element 41 are all prior art and will not be repeated in this embodiment.

[0050] In this embodiment, a wiring frame 3 is arranged on the inner wall of the cabinet 1, and a heat dissipation wire 42 of a heat dissipation component 5 is arranged in the wiring frame 3. The good thermal conductivity of the metal wire 42 itself is used to directly dissipate the heat generated by the distribution element 41 through the heat dissipation component 5. At the same time, the wiring frame 3 can gather the heat dissipation fan air path to form an air duct, or a liquid cooling strip 52 is attached to the wiring frame 3, or a sandwich pipe 53 for accommodating a coolant is installed in the wiring frame 3 to achieve water-cooled heat dissipation. The above heat dissipation methods can all converge the heat dissipation path by the wiring frame 3, thereby improving the heat dissipation efficiency of the heat dissipation component 5. There is no need to install a large area of ​​heat dissipation panels on the outer shell of the entire distribution box. The overall device is light, easy to install, low in cost, and occupies a small space.

[0051] In order to ensure that the distribution box operates smoothly under different temperature environments, based on the above embodiment, see Fig. 9 In this embodiment, an opening 15 is provided on the side of the cabinet body 1 , and a cabinet door 16 is covered on the opening 15 , and one side of the cabinet door 16 is rotatably connected to the cabinet body 1 .

[0052] Furthermore, in order to prevent external foreign matter from entering the distribution box through the cabinet door 16, a waterproof seal 17 is installed on the opening 15. The shape of the seal 17 matches the shape of the cabinet door 16. When the cabinet door 16 covers the opening 15 of the cabinet body 1, the seal 17 fits tightly against the cabinet body 1.

[0053] Preferably, the sealing member 17 can be made of rubber.

[0054] Furthermore, a viewport 18 for inspecting the power distribution components 41 is provided on the cabinet door 16 , and a transparent plate 19 is covered on the viewport 18 .

[0055] Furthermore, the distribution box also includes a controller 6 and a temperature detection component 7 installed on the cabinet door 16. The controller 6 is electrically connected to each fan group 51 or each water pump 54 of the heat dissipation component 5, respectively. The detection end of the temperature detection component 7 faces the distribution element 41. The controller 6 detects the surface temperature of the distribution element 41 through the temperature detection component 7 and controls the heat dissipation component 5 to be turned on or off.

[0056] Preferably, the upper limit of the preferred ambient temperature of the distribution box does not exceed 40°C; the average value of the ambient temperature over 24 hours does not exceed 35°C.

[0057] If the wind heat dissipation in the above embodiment is selected, the controller 6 is electrically connected to each fan group 51. When the temperature detection component 7 detects that the real-time temperature of the power distribution component 4 exceeds 35°C, the controller 6 controls each fan group 51 to turn on and operate at 50% of the rated power. When the temperature detection component 7 detects that the real-time temperature of the power distribution component 4 drops below 35°C, the controller 6 controls each fan group 51 to turn off; when the temperature detection component 7 detects that the real-time temperature of the power distribution component 4 exceeds 40°C, the controller 6 controls each fan group 51 to operate at 100% of the rated power, until the temperature detection component 7 detects that the real-time temperature of the power distribution component 4 drops below 35°C, the controller 6 controls each fan group 51 to drop from 100% of the rated power to 50% of the rated power.

[0058] If water cooling in the above embodiment is used, the controller 6 is electrically connected to the water pump 534. When the temperature detection component 7 detects that the real-time temperature of the distribution component 4 exceeds 35°C, the controller 6 controls the water pump 534 to turn on and operate at 50% of the rated power. When the temperature detection component 7 detects that the real-time temperature of the distribution component 4 drops below 35°C, the controller 6 controls the water pump 534 to turn off. When the temperature detection component 7 detects that the real-time temperature of the distribution component 4 exceeds 40°C, the controller 6 controls the water pump 534 to operate at 100% of the rated power, until the temperature detection component 7 detects that the real-time temperature of the distribution component 4 drops below 35°C, the controller 6 controls the water pump 534 to drop from 100% of the rated power to 50% of the rated power.

[0059] Preferably, the distribution box further comprises a wireless communication component 8 mounted on the cabinet door 16, and the controller 6 is electrically connected to the wireless communication component 8. If the temperature detection component 7 detects that the temperature of the distribution component 4 is still above 40°C but below 65°C after a preset time, the distribution box is in a high load state, and the controller 6 generates an early warning signal and transmits it to an external receiving end through the wireless communication component 8.

[0060] Preferably, if the temperature detection component 7 detects that the temperature of the distribution component 4 exceeds 65°C, the distribution box may be faulty, and the controller 6 cuts off the circuit of the distribution box and generates a warning signal, which is sent to the external receiving end through the wireless communication component 8.

[0061] Preferably, the temperature detection component 7 can use a temperature sensor, and the wireless communication component 8 can use a wireless network transmitter (such as 3G, 4G, 5G, WIFI, etc.).

[0062] It should be noted that the focus of the controller 6, temperature detection component 7, and wireless communication component 8 in this embodiment is on their control principles. The accompanying drawings only show the installation areas of the controller 6, temperature detection component 7, and wireless communication component 8, without showing their detailed structures and electrical connections. Their structures and electrical connections are all existing technologies and are not elaborated in this embodiment. Only the installation areas are shown in the accompanying drawings.

[0063] This embodiment detects the temperature of the power distribution component 4 in real time through the temperature detection component 7, and controls the heat dissipation component 5 to turn on or off or change the real-time power through the controller 6 to ensure that the power distribution component 4 is at an optimal working temperature, and notifies the user through the wireless communication component 8 to check or repair when the real-time temperature of the power distribution component 4 is abnormal, thereby ensuring the service life of the distribution box and improving the user experience.

[0064] The above detailed description of the specific implementation of the utility model is only used as an example, and the utility model is not limited to the specific implementation described above. For those skilled in the art, any equivalent modification or substitution of the utility model is also within the scope of the utility model. Therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the utility model should be included in the scope of the utility model.

Claims

1. A distribution box, characterized in that: The distribution box comprises: Cabinet; A support frame, fixedly mounted on the inner wall of the cabinet; At least one wiring frame, fixedly mounted on the support frame and spaced apart from the inner wall of the cabinet by a first preset distance, the interior of each wiring frame being in communication with the external air; A power distribution assembly, comprising a power distribution element mounted on the support frame and a wire mounted in the wiring frame, wherein the wire runs through the wiring frame and the cabinet to connect the power distribution element with an external cable; At least one heat dissipation component is installed in the wiring frame and is used to dissipate heat from the wires.

2. The distribution box according to claim 1, characterized in that: The wiring frame includes a first horizontal side, a first vertical side, a second horizontal side, and a second vertical side connected in sequence from end to end, the first vertical side and the second vertical side are respectively provided with a first mounting piece for being mounted on the support frame, both ends of the support frame are respectively provided with a first mounting hole matching the first mounting piece, both ends of the support frame are respectively provided with a second mounting piece for fixing the support frame to the cabinet, and the side wall of the cabinet is provided with a second mounting hole matching the second mounting piece.

3. The distribution box according to claim 2, characterized in that: The heat dissipation component includes at least four fan groups, and at least one fan group is installed on the first horizontal side, the first vertical side, the second horizontal side, and the second vertical side respectively.

4. The distribution box according to claim 2, characterized in that: The heat dissipation component includes at least four liquid cooling bars for auxiliary heat dissipation, and at least two liquid cooling bars are installed on each wiring frame.

5. The distribution box according to claim 1, characterized in that: A plurality of ventilation holes are evenly arranged at a second preset distance on a surface of the wiring frame adjacent to the power distribution element, and the heat dissipation component assists in dissipating the power distribution element through the ventilation holes.

6. The distribution box according to claim 1, characterized in that: A vent is provided on the side of the cabinet, and a filter is installed on the vent to prevent foreign matter from entering.

7. The distribution box according to claim 1, characterized in that: An opening is provided on the side of the cabinet body, and a cabinet door is covered on the opening. One side of the cabinet door is rotatably connected to the cabinet body.

8. The distribution box according to claim 7, characterized in that: The distribution box also includes a controller and a temperature detection component installed on the cabinet door. The controller is electrically connected to the heat dissipation components respectively. The detection end of the temperature detection component faces the distribution element. The controller detects the surface temperature of the distribution element through the temperature detection component and controls the heat dissipation component to be turned on or off.

9. The distribution box according to claim 7, characterized in that: A sealing member for waterproofing is arranged on the opening, and the shape of the sealing member matches the shape of the cabinet door.

10. The distribution box according to claim 7, characterized in that: The cabinet door is also provided with a viewport for inspecting the power distribution components, and the viewport is covered with a transparent plate.

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