Electronic device mounting structure and cabinet

Abstract

The utility model provides an electronic device mounting structure and a cabinet, which belong to the technical field of cabinets and comprise a device body and a first insulation structure. The first insulation structure is connected to the outer surface of at least one side of the device body; the first insulation structure is provided with an insulation installation part, and the insulation installation part is used for being connected with a cabinet frame. According to the electronic device installation structure provided by the utility model, the device body is connected with the cabinet frame through the first insulation structure and the insulation installation part, so that double insulation exists between the device body and the cabinet frame, the insulation grade of the device body is improved, and even if the insulation grade of self packaging of the device body is low, the device body cannot be damaged. And the high voltage resistance requirement of the cabinet can also be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of cabinets, and more specifically, relates to an electronic device mounting structure and a cabinet. Background Art

[0002] Electronic devices are often used in high-voltage environments, that is, it is required that the insulating medium between the live terminals of the electronic devices and the cabinet can withstand high voltage to meet the actual operating conditions. For cabinets with high requirements for withstand voltage performance, the requirements for insulation performance are also high.

[0003] The insulation level between the mounting contact surface of the existing electronic devices and the live terminals or the insulation level of the self-encapsulation of the electronic devices usually fails to meet the high-voltage withstand requirements, resulting in difficult selection of electronic devices and complex safety design of the cabinet. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electronic device mounting structure and a cabinet, aiming to solve the technical problem that the insulation level of the electronic devices in the existing technology fails to meet the high-voltage withstand requirements.

[0005] To achieve the above purpose, in the first aspect, the utility model provides an electronic device mounting structure, including:

[0006] A device body; and

[0007] A first insulation structure connected to the outer surface of the device body; an insulation mounting portion is provided on the first insulation structure, and the insulation mounting portion is used for connecting to a cabinet frame.

[0008] In a possible implementation manner, the surface area of the first insulation structure is larger than the surface area of one side outer surface of the device body, and the outer peripheral edge of the first insulation structure protrudes outward relative to the outer peripheral edge of the device body.

[0009] In a possible implementation manner, the first insulation structure is an insulation board, the device body is arranged on one board surface of the insulation board, and the insulation mounting portion is arranged on the other board surface of the insulation board.

[0010] In a possible implementation manner, the insulation mounting portion includes an L-shaped mounting bracket, and the mounting bracket is connected between the first insulation structure and the cabinet frame so that there is a gap between the first insulation structure and the cabinet frame.

[0011] The beneficial effect of the electronic device installation structure provided by the utility model is that compared with the prior art, in the electronic device installation structure of the utility model, the device body is connected to the first insulating structure, the first insulating structure is provided with an insulating installation part, and the device body is connected to the cabinet frame through the first insulating structure and the insulating installation part, so that there is double insulation between the device body and the cabinet frame, thereby improving the insulation level of the device body and being able to meet the high voltage resistance requirements of the cabinet.

[0012] In a second aspect, the utility model further provides a cabinet, comprising:

[0013] Cabinet frame; and

[0014] The above-mentioned electronic device mounting structure.

[0015] In a possible implementation, the inner cavity of the cabinet frame is divided into a power device chamber and a switch device chamber; the power device chamber and the switch device chamber are spaced apart and distributed along the left-right direction;

[0016] The multiple groups of electronic device mounting structures include multiple groups of power device mounting structures arranged in the power device chamber, and multiple groups of switch device mounting structures arranged in the switch device chamber.

[0017] In some embodiments, a plurality of groups of support beams are provided in the power device chamber, and the support beams are connected to the insulating mounting portion of the power device mounting structure for supporting the power device mounting structure.

[0018] In a possible implementation manner, the cabinet frame is placed on the ground, and a second insulating structure is provided between the cabinet frame and the ground.

[0019] In some embodiments, a channel steel is pre-buried in the ground, and a first mounting hole is provided on the channel steel; a second mounting hole is provided at the bottom of the cabinet frame, and the second mounting hole is axially corresponding to and connected with the first mounting hole;

[0020] A third insulating structure is commonly provided in the first mounting hole and the second mounting hole, and the upper end of the third insulating structure also passes through the second mounting hole and extends toward the periphery of the second mounting hole; a third mounting hole is provided on the third insulating structure; a fastener is passed through the third mounting hole; the cabinet frame and the channel steel are fixedly connected by the fastener.

[0021] The cabinet provided by the utility model adopts the above-mentioned electronic device installation structure, so that double insulation can be formed between the device body and the cabinet frame. Even if the insulation level of the device body itself is low, it can meet the high voltage resistance requirement of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Structural schematic diagram of the electronic device mounting structure provided by the embodiment of the present invention;

[0024] Figure 2 Internal structural schematic diagram of the cabinet provided by the embodiment of the present invention;

[0025] Figure 3 Fixed structural schematic diagram of the cabinet provided by the embodiment of the present invention;

[0026] Figure 4 For Figure 3 Enlarged structural schematic diagram at circle A in

[0027] In the figure: 1, device body; 2, first insulating structure; 21, insulating mounting part; 3, cabinet frame; 31, second mounting hole; 4, power device chamber; 5, switching device chamber; 6, second insulating structure; 7, third insulating structure; 8, fastener; 100, ground; 200, channel steel; 201, first mounting hole. Specific embodiments

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Please refer to Figure 1 and Figure 2 simultaneously, and now the electronic device mounting structure provided by the present invention will be described. The electronic device mounting structure includes a device body 1 and a first insulating structure 2. The first insulating structure 2 is connected to at least one outer surface of the device body 1; an insulating mounting part 21 is provided on the first insulating structure 2, and the insulating mounting part 21 is used to connect to the cabinet frame 3.

[0030] The device body 1 is a conventional electronic component in the prior art, such as a capacitor, a power module, a notch filter, an inductor, a resistor, etc. The device body 1 has an outer surface, and the outer surface can be a continuous plane, a continuous plane, a continuous curved surface, a discontinuous curved surface, etc., as long as the first insulating structure 2 is connected to a certain place on the outer surface of the device body 1.

[0031] The first insulating structure 2 is made of insulating material. The first insulating structure 2 can be a block structure, a plate structure, a box structure, etc. The specific structure of the first insulating structure 2 is not limited in this embodiment. The first insulating structure 2 can cover the outer periphery of the device body 1 or be directly connected to a certain side surface of the device body 1.

[0032] The insulating mounting portion 21 is a part of the first insulating structure 2. Preferably, the occupied area of the insulating mounting portion 21 is smaller than that of the first insulating structure 2. The insulating mounting portion 21 only needs to be adapted to the mounting position of the cabinet frame 3.

[0033] The device body 1 and the first insulating structure 2 can be insulatingly connected or non-insulatingly connected. Specifically, connection methods such as clamping, plugging, and covering can be adopted. Similarly, the first insulating structure 2 and the insulating mounting portion 21, and between the insulating mounting portion 21 and the cabinet frame 3 can be insulatingly connected or non-insulatingly connected. Specifically, connection methods such as clamping, plugging, and screwing can be adopted. If all non-insulating connections are used, as long as the connectors do not contact each other.

[0034] Compared with the prior art, for the electronic device mounting structure provided by the present utility model, the device body 1 is connected to the first insulating structure 2, and the insulating mounting portion 21 is provided on the first insulating structure 2. The device body 1 is connected to the cabinet frame 3 through the first insulating structure 2 and the insulating mounting portion 21, so that there is double insulation between the device body 1 and the cabinet frame 3, improving the insulation level of the device body 1. Even if the insulation level of the self-packaging of the device body 1 is low, it can meet the high voltage resistance requirements of the cabinet.

[0035] In some embodiments, the following structure can be adopted between the first insulating structure 2 and the device body 1 Figure 1 As shown, see Figure 1 , the surface area of the first insulating structure 2 is larger than the surface area of one of the outer surfaces of the device body 1, and the outer peripheral edge of the first insulating structure 2 protrudes outward relative to the outer peripheral edge of the device body 1.

[0036] In order to facilitate the electrical connection between multiple device bodies 1 and make it convenient to wire the device body 1, the first insulating structure 2 is only connected to one of the outer surfaces of the device body 1. Compared with the way that the first insulating structure 2 covers the device body 1, the overall occupied space can be reduced to improve the integration degree inside the cabinet and facilitate wiring for the device body 1.

[0037] In addition, the outer peripheral edge of the first insulating structure 2 protrudes outward relative to the outer peripheral edge of the device body 1, so that the first insulating structure 2 completely covers one of the outer surfaces of the device body 1, and the protruding part can increase the insulation space between two adjacent device bodies 1 and between the device body 1 and the cabinet frame 3, further improving the insulation level.

[0038] In some embodiments, the above-mentioned first insulating structure 2 may adopt the structure as shown in Figure 1 See Figure 1 . The first insulating structure 2 is an insulating board, the device body 1 is disposed on one board surface of the insulating board, and the insulating mounting portion 21 is disposed on the other board surface of the insulating board.

[0039] The insulating board has a relatively thin thickness and occupies a small space. After the insulating board is combined with the device body 1, the overall height (or width) is only slightly larger than the height (or width) of the device body 1. Since there is a safety clearance between two adjacent device bodies 1, the insulating board can be placed in the safety clearance and hardly occupies extra space, thereby improving the integration degree of the devices inside the cabinet.

[0040] The insulating mounting portion 21 and the device body 1 are respectively located on two sides of the insulating board, so that there is no interference between the insulating mounting portion 21 and the device body 1. When connecting the insulating board and the device body 1, there is no need to additionally avoid the insulating mounting portion 21, and it is also convenient to assemble the insulating mounting portion 21 to the cabinet frame 3.

[0041] In some embodiments, the above-mentioned insulating mounting portion 21 may adopt the structure as shown in Figure 1 See Figure 1 . The insulating mounting portion 21 includes an L-shaped mounting bracket, and the mounting bracket is connected between the first insulating structure 2 and the cabinet frame 3 to form a gap between the first insulating structure 2 and the cabinet frame 3.

[0042] One side portion of the L-shaped mounting bracket is connected to the first insulating structure 2, and the other side portion is connected to the cabinet frame 3. The L-shaped mounting bracket has a simple structure and is convenient for manufacturing and assembling; moreover, the L-shaped mounting bracket can also lift the device body 1 and the first insulating structure 2, and there is a gap between the first insulating structure 2 and the cabinet frame 3, which can prevent the plate-shaped first insulating structure 2 from being damaged due to uneven force when resting on the beam-shaped cabinet frame 3.

[0043] Please refer to Figure 2 . Based on the same inventive concept, an embodiment of the present application further provides a cabinet, including a cabinet frame 3 and multiple groups of the above-mentioned electronic device mounting structures.

[0044] The above-mentioned cabinet may be a subway regenerative braking energy feedback cabinet. At present, the regenerative braking energy generated when the subway brakes generally adopts the method of inverter feedback to feed the energy back to the AC medium-voltage power supply system to realize the recycling of its energy. The total power of this device reaches the megawatt level, the DC side voltage is as high as 1500V - 2000V, and the AC side grid-connected output voltage is as high as 1kV / 10kV. There may be interference between strong electricity and weak electricity, and there may be interference between high voltage and low voltage. The reliability, operation safety and personal safety of the equipment must be considered as key points, and no safety problems can occur.

[0045] When the subway regenerative braking energy feedback cabinet is in operation, the equipment must have perfect multi-level protection functions, including software, hardware, and electrical multi-level protection functions, as well as multi-level protection functions at the module level, device level, and system level; the equipment also needs to have multiple protection functions. The installation wiring between high-voltage and low-voltage components needs to be isolated and partitioned, and the high-voltage parts need to be strengthened in insulation for high-strength protection.

[0046] For the cabinet provided by the present utility model, due to the adoption of the above-mentioned electronic device installation structure, a double insulation can be formed between the device body 1 and the cabinet frame 3. Even if the insulation level of the device body's own package is low, it can meet the high voltage withstand requirements of the cabinet, reducing the design cost of the cabinet.

[0047] In some embodiments, the above-mentioned cabinet frame 3 can adopt the structure as Figure 2 shown, see Figure 2 . The inner cavity of the cabinet frame 3 is divided into a power device chamber 4 and a switching device chamber 5; the power device chamber 4 and the switching device chamber 5 are spaced apart along the left-right direction; multiple groups of electronic device installation structures include multiple groups of power device installation structures arranged in the power device chamber 4 and multiple groups of switching device installation structures arranged in the switching device chamber 5.

[0048] The device body 1 in multiple groups of power device installation structures includes a power module, a DC capacitor, an LC filter inductor, an LC filter capacitor, a heating and dehumidifying device, and a cooling fan. The device body 1 in multiple groups of switching device installation structures includes a wave trap, an AC circuit breaker, an AC contactor, a soft start module, a DC isolator switch, a DC contactor, a DC fuse, and a control single board, etc. Among them, secondary control circuit devices such as the control single board and the terminal block are located in the low-voltage cabin in the upper middle part of the relatively independent switching device chamber 5, and other high-voltage devices are located in the lower part of the switching device chamber 5.

[0049] The power device chamber 4 and the switching device chamber 5 are spaced apart along the left-right direction, optimizing the layout of the power devices and the switching devices, and facilitating operation and maintenance by personnel.

[0050] In some embodiments, multiple groups of support beams are provided in the above-mentioned power device chamber 4. The support beams are connected to the insulation installation part 21 of the power device installation structure and are used to support the power device installation structure.

[0051] Multiple groups of power device installation structures are generally arranged at intervals along the up-down direction. The support beams not only play a role in supporting and fixing the power device installation structure, but also divide the power device chamber 4 into multiple installation spaces, and one or more power devices are evenly distributed in each installation space, thereby optimizing the layout of the power device chamber 4.

[0052] In some embodiments, the above-mentioned cabinet frame 3 may also adopt the structure as shown in Figure 3 and Figure 4 . Refer to Figure 3 and Figure 4 . The cabinet frame 3 is placed on the ground 100, and a second insulating structure 6 is provided between the cabinet frame 3 and the ground 100. The second insulating structure 6 is used to insulate and isolate the cabinet frame 3 from the ground 100.

[0053] The second insulating structure 6 may be an epoxy insulating board adapted to the bottom surface of the cabinet frame 3. The epoxy insulating board is laid on the ground 100, and the cabinet frame 3 is placed on the epoxy insulating board.

[0054] Preferably, channel steel 200 is embedded in the ground 100, and a first mounting hole 201 is provided on the channel steel 200; a second mounting hole 31 is provided at the bottom of the cabinet frame 3, and the second mounting hole 31 corresponds axially and communicates with the first mounting hole 201.

[0055] A third insulating structure 7 is jointly provided in the first mounting hole 201 and the second mounting hole 31. The upper end of the third insulating structure 7 also penetrates out of the second mounting hole 31 and extends towards the periphery of the second mounting hole 31; a third mounting hole is provided on the third insulating structure 7; a fastener 8 is inserted through the third mounting hole; the cabinet frame 3 and the channel steel 200 are fixedly connected through the fastener 8.

[0056] Channel steel 200 is embedded in the ground 100, and the cabinet frame 3 is connected to the channel steel 200 through the fastener 8. The channel steel 200 has high self-strength and can provide stable support for the cabinet frame 3, avoiding the vibration of the cabinet caused by the vibration of the ground 100.

[0057] The cabinet frame 3, the channel steel 200 and the fastener 8 are all metal parts. In order to insulate the cabinet frame 3 from the channel steel 200, a third insulating structure 7 is jointly provided in the first mounting hole 201 of the channel steel 200 and the second mounting hole 31 of the cabinet frame 3. The upper end of the third insulating structure 7 also penetrates out of the second mounting hole 31 and extends towards the periphery of the second mounting hole 31. The fastener 8 passes through the third mounting hole of the third insulating structure 7, so that the fastener 8 is insulated and isolated from the cabinet frame 3, thereby ensuring the insulation and isolation between the cabinet frame 3 and the channel steel 200.

[0058] Preferably, the third insulating structure 7 is a T-shaped block structure, the vertical part of which is located in the first mounting hole 201 and the second mounting hole 31, and the horizontal part is located at the periphery of the top surface of the second mounting hole 31.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electronic device mounting structure, characterized in that: include: Device body (1); as well as A first insulating structure (2) is connected to the outer surface of the device body (1); an insulating mounting portion (21) is provided on the first insulating structure (2), and the insulating mounting portion (21) is used to be connected to a cabinet frame (3).

2. The electronic device mounting structure according to claim 1, characterized in that: The surface area of ​​the first insulating structure (2) is greater than the surface area of ​​one side outer surface of the device body (1), and the outer peripheral edge of the first insulating structure (2) is arranged to protrude outwards relative to the outer peripheral edge of the device body (1).

3. The electronic device mounting structure according to claim 1, characterized in that: The first insulating structure (2) is an insulating plate, the device body (1) is arranged on one surface of the insulating plate, and the insulating mounting portion (21) is arranged on the other surface of the insulating plate.

4. The electronic device mounting structure according to claim 1, characterized in that: The insulating mounting portion (21) comprises an L-shaped mounting bracket, and the mounting bracket is connected between the first insulating structure (2) and the cabinet frame (3) so that a gap exists between the first insulating structure (2) and the cabinet frame (3).

5. A cabinet, characterized in that: include: a cabinet frame (3); and A plurality of electronic device mounting structures as described in any one of claims 1 to 4.

6. The cabinet according to claim 5, characterized in that: The inner cavity of the cabinet frame (3) is divided into a power device chamber (4) and a switch device chamber (5); the power device chamber (4) and the switch device chamber (5) are spaced apart in the left-right direction; The multiple groups of electronic device mounting structures include multiple groups of power device mounting structures arranged in the power device chamber (4), and multiple groups of switch device mounting structures arranged in the switch device chamber (5).

7. The cabinet according to claim 6, characterized in that: A plurality of groups of support beams are provided in the power device chamber (4); the support beams are connected to the insulating mounting portion (21) of the power device mounting structure and are used to support the power device mounting structure.

8. The cabinet according to claim 5, characterized in that: The cabinet frame (3) is placed on the ground (100), and a second insulating structure (6) is provided between the cabinet frame (3) and the ground (100).

9. The cabinet according to claim 8, characterized in that: The ground (100) is pre-buried with a channel steel (200), and the channel steel (200) is provided with a first mounting hole (201); the bottom of the cabinet frame (3) is provided with a second mounting hole (31), and the second mounting hole (31) is axially corresponding to and connected with the first mounting hole (201); A third insulating structure (7) is provided in both the first mounting hole (201) and the second mounting hole (31); the upper end of the third insulating structure (7) also passes through the second mounting hole (31) and extends toward the periphery of the second mounting hole (31); a third mounting hole is provided on the third insulating structure (7); a fastener (8) is passed through the third mounting hole; and the cabinet frame (3) and the channel steel (200) are fixedly connected via the fastener (8).

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