Insulation and heat dissipation structure of high-power frequency converter

Abstract

The utility model relates to the technical field of frequency converter insulation and heat dissipation, and discloses a high-power frequency converter insulation and heat dissipation structure which comprises a bottom plate, foot columns and side columns, the foot columns are fixedly connected to the four corners of the upper surface of the bottom plate, and the side columns are fixedly connected to the middle portions of the two sides of the upper surface of the bottom plate. According to the high-power frequency converter insulation heat dissipation structure, the bottom plate, the foot columns and the side columns are combined to form a frame structure used for bearing the heat dissipation assembly and the frequency converter, meanwhile, the rigidity of the whole structure is enhanced, and the frame structure is made of a steel material, can be directly used for grounding and has heat dissipation, impact resistance and lightning stroke resistance performance; the outer side vacant part of the frame body is filled with the side plates, the top of the frame body is sealed and covered with the top plate, the side plates and the top plate are made of metal materials such as copper with high heat conduction performance and high conductivity, the heat dissipation and signal shielding capacity can be achieved, meanwhile, the interior of each side plate is a hollow outer layer, heat dissipation fins and arc-shaped pieces are installed, the heat dissipation area can be increased, and the heat dissipation efficiency is improved. And the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of inverter insulation and heat dissipation technology, specifically to an insulation and heat dissipation structure for high-power inverters. Background Technology

[0002] A full-power pumped storage frequency converter is a type of power equipment used in pumped storage power stations. It is mainly used to control the operation of pumped storage units and achieve efficient conversion between electrical energy and mechanical energy.

[0003] The inverter has a large capacity and generates a lot of heat. The difficulty in heat dissipation of large-capacity inverters can lead to inverter failure risks and cause significant economic losses. In addition, since the inverter is installed in a humid environment, its insulation protection is another important issue. If the insulation is poor, it will affect the normal operation of the inverter and shorten its service life. At the same time, traditional heat dissipation structures cannot simultaneously provide signal shielding and moisture protection.

[0004] Therefore, it is necessary to propose an insulation and heat dissipation structure for high-power frequency converters. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an insulation and heat dissipation structure for high-power frequency converters. It has the advantages of using a composite insulation and heat dissipation structure to improve the insulation performance and impact resistance of the frequency converter, as well as to improve the heat dissipation effect of the frequency converter, thus solving the problems mentioned in the background technology.

[0006] This utility model provides the following technical solution: an insulation and heat dissipation structure for a high-power frequency converter, including a base plate, feet, and side columns:

[0007] The base plate has four corners fixedly connected to foot posts, and the base plate has two side posts fixedly connected to the middle of both sides of the base plate.

[0008] Side plates are fixedly connected to the opposite sides of the foot posts and side posts, and top plates are fixedly connected to the upper ends of the foot posts and side posts. A middle layer square frame is installed inside the frame composed of the bottom plate, foot posts and side posts. An inner layer square frame is installed inside the middle layer square frame. The middle layer square frame is made of inorganic insulating material, and the inner layer square frame is made of organic insulating material.

[0009] Preferably, the side plate has a perforated outer layer inside, an arc-shaped piece is installed inside the perforated outer layer, and heat dissipation fins are installed on the side of the arc-shaped piece. The heat dissipation fins are provided in multiple sets, and the multiple sets of heat dissipation fins are evenly arranged in a square shape.

[0010] Preferably, the side of the base plate is provided with a semi-frame protective sleeve one and a semi-frame protective sleeve two, and the side of the semi-frame protective sleeve one and the semi-frame protective sleeve two are threaded with bolts, and the end of the bolts is threaded into the interior of the base plate.

[0011] Preferably, the first semi-frame protective sleeve has insertion slots at both ends on one side relative to the second semi-frame protective sleeve, and the second semi-frame protective sleeve has insertion blocks fixedly connected to both ends on one side relative to the first semi-frame protective sleeve. The insertion blocks are inserted into the insertion slots, and the opposite sides of the first and second semi-frame protective sleeves are fitted together.

[0012] Preferably, L-shaped blocks are provided on the upper and lower sides of the connection between the semi-frame protective sleeve one and the semi-frame protective sleeve two and the base plate, and the L-shaped blocks are made of sealing strips.

[0013] Preferably, the base plate, foot posts, and side posts are made of steel, and the side plates and top plate are made of copper.

[0014] Preferably, the heat dissipation fins and arc-shaped plates are made of copper.

[0015] Preferably, the top plate and the bottom plate are the same size.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This high-power frequency converter insulation and heat dissipation structure consists of a base plate, foot posts, and side posts forming a frame structure to support the heat dissipation components and the frequency converter, while also enhancing the rigidity of the entire structure. The frame structure is made of steel and can be directly grounded, possessing heat dissipation, impact resistance, and lightning protection capabilities. The outer gaps of the frame are filled with side plates, and the top is covered by a top plate. Both the side plates and the top plate are made of high thermal conductivity and high electrical conductivity metal materials, such as copper, enabling heat dissipation and signal shielding. The interior of the side plates has a hollow outer layer with heat dissipation fins and arc-shaped plates installed, which increases the heat dissipation area and improves the heat dissipation effect. The middle square frame and the inner square frame are made of inorganic and organic insulating materials, respectively, providing impact resistance, insulation, and moisture resistance, further improving the performance of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0020] Figure 2 This utility model Figure 1 Side view structural diagram;

[0021] Figure 3 This is a schematic diagram of the internal structure of the hollowed-out outer layer of this utility model;

[0022] Figure 4 This is a schematic diagram of the protective sleeve part of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base plate; 110. Foot post; 120. Top plate; 130. Side post; 2. Middle layer square frame; 3. Inner layer square frame; 4. Side plate; 410. Hollowed-out outer layer; 5. Heat dissipation fins; 510. Arc-shaped plate; 6. Semi-frame protective sleeve one; 610. Insertion slot; 7. Semi-frame protective sleeve two; 710. Insertion block; 8. Bolt; 9. L-shaped block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The high-power frequency converter insulation and heat dissipation structure includes a base plate 1, foot posts 110, and side posts 130.

[0027] Foot posts 110 are fixedly connected to the four corners of the upper surface of the base plate 1, and side posts 130 are fixedly connected to the middle of both sides of the upper surface of the base plate 1.

[0028] Side plates 4 are fixedly connected to the opposite sides of the foot post 110 and the side post 130. Top plate 120 is fixedly connected to the upper end of the foot post 110 and the side post 130. A middle layer square frame 2 is installed inside the frame composed of the bottom plate 1, the foot post 110 and the side post 130. An inner layer square frame 3 is installed inside the middle layer square frame 2.

[0029] The base plate 1, the foot post 110 and the side post 130 are made of steel structure, the side plate 4 and the top plate 120 are made of copper structure, the heat dissipation fins 5 and the arc-shaped plate 510 are made of copper structure, the middle layer square frame 2 is made of inorganic insulating material, the inner layer square frame 3 is made of organic insulating material, and the top plate 120 is the same size as the base plate 1.

[0030] The frame structure, consisting of a base plate 1, foot posts 110, and side posts 130, is used to support the heat dissipation components and the frequency converter, while also enhancing the rigidity of the entire structure. The frame structure is made of steel and can be directly grounded, providing heat dissipation, impact resistance, and lightning protection. The outer gaps of the frame are filled by side plates 4, and the top is covered by a top plate 120. Both side plates 4 and top plates 120 are made of high thermal conductivity and high electrical conductivity metal materials, such as copper, which enable heat dissipation and signal shielding. The interior of the side plate 4 is a hollow outer layer 410, which is equipped with heat dissipation fins 5 and arc-shaped plates 510, increasing the heat dissipation area and improving the heat dissipation effect. The middle square frame 2 and the inner square frame 3 are made of inorganic and organic insulating materials, respectively, providing impact resistance, insulation, and moisture resistance. The inorganic insulating layer is made of polyimide, and the frequency converter is installed inside the inner square frame 3.

[0031] As a preferred technical solution of this utility model, a semi-frame protective sleeve 6 and a semi-frame protective sleeve 7 are provided on the side of the base plate 1. The side of the semi-frame protective sleeve 6 and the semi-frame protective sleeve 7 are threaded with bolts 8. The end of the bolts 8 is threaded and extends into the interior of the base plate 1. The semi-frame protective sleeve 6 has an insertion groove 610 at both ends on one side of the semi-frame protective sleeve 7. The semi-frame protective sleeve 7 is fixedly connected to an insertion block 710 at both ends on one side of the semi-frame protective sleeve 6. The insertion block 710 is inserted into the interior of the insertion groove 610, and the opposite sides of the semi-frame protective sleeve 6 and the semi-frame protective sleeve 7 are in contact.

[0032] When grounding is required, the grounding assembly is installed on one side of the base plate 1 by welding. At this time, the semi-frame protective sleeve 1 6 and the semi-frame protective sleeve 2 7 are combined into a square frame by the cooperation of the insertion slot 610 and the insertion block 710. This frame is then fitted onto the connection between the grounding assembly and the base plate 1 and fixed to the base plate 1 by bolts 8. This protects the grounding point from water vapor corrosion, preventing rust and breakage at the connection and ensuring the grounding effect.

[0033] As a preferred technical solution of this utility model, L-shaped blocks 9 are provided on the upper and lower sides of the connection between the semi-frame protective sleeve 1 6 and the semi-frame protective sleeve 2 7 and the base plate 1. The material of the L-shaped blocks 9 is sealing strip.

[0034] The L-shaped block 9 is made of sealing strip material, which can effectively seal the connection between the square frame composed of the semi-frame protective sleeve 1 6 and the semi-frame protective sleeve 2 7 and the base plate 1, further improving the protection capability.

[0035] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-power frequency converter insulation and heat dissipation structure, comprising a base plate (1), foot posts (110), and side posts (130), characterized in that: The base plate (1) has four corners of the upper surface fixedly connected with foot posts (110), and the base plate (1) has two sides of the upper surface fixedly connected with side posts (130). Side plates (4) are fixedly connected to the opposite sides of the foot post (110) and side post (130). A top plate (120) is fixedly connected to the upper end of the foot post (110) and side post (130). An intermediate square frame (2) is installed inside the frame composed of the bottom plate (1), foot post (110) and side post (130). An inner square frame (3) is installed inside the intermediate square frame (2). The intermediate square frame (2) is made of inorganic insulating material, and the inner square frame (3) is made of organic insulating material.

2. The high-power frequency converter insulation and heat dissipation structure according to claim 1, characterized in that: The side plate (4) has a hollow outer layer (410) inside, and an arc-shaped piece (510) is installed inside the hollow outer layer (410). Heat dissipation fins (5) are installed on the side of the arc-shaped piece (510). There are multiple sets of heat dissipation fins (5), and the multiple sets of heat dissipation fins (5) are evenly arranged in a square state.

3. The high-power frequency converter insulation and heat dissipation structure according to claim 1, characterized in that: The side of the base plate (1) is provided with a semi-frame protective sleeve one (6) and a semi-frame protective sleeve two (7). The side of the semi-frame protective sleeve one (6) and the semi-frame protective sleeve two (7) are threaded with bolts (8), and the end of the bolts (8) is threaded into the interior of the base plate (1).

4. The high-power frequency converter insulation and heat dissipation structure according to claim 3, characterized in that: The first half-frame protective sleeve (6) has insertion slots (610) at both ends on one side relative to the second half-frame protective sleeve (7). The second half-frame protective sleeve (7) has insertion blocks (710) fixedly connected at both ends on one side relative to the first half-frame protective sleeve (6). The insertion blocks (710) are inserted into the insertion slots (610), and the opposite sides of the first half-frame protective sleeve (6) and the second half-frame protective sleeve (7) are fitted together.

5. The high-power frequency converter insulation and heat dissipation structure according to claim 3, characterized in that: L-shaped blocks (9) are provided on the upper and lower sides of the connection between the semi-frame protective sleeve one (6) and the semi-frame protective sleeve two (7) and the base plate (1). The material of the L-shaped blocks (9) is sealing strip.

6. The high-power frequency converter insulation and heat dissipation structure according to claim 1, characterized in that: The base plate (1), foot column (110) and side column (130) are made of steel, while the side plate (4) and top plate (120) are made of copper.

7. The high-power frequency converter insulation and heat dissipation structure according to claim 2, characterized in that: The heat dissipation fins (5) and the arc-shaped plate (510) are made of copper.

8. The high-power frequency converter insulation and heat dissipation structure according to claim 1, characterized in that: The top plate (120) is the same size as the bottom plate (1).

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