High-power frequency conversion electric control cabinet

Abstract

The utility model discloses a high-power frequency conversion electric control cabinet, which comprises a cabinet body and a cabinet door, the cabinet door is hinged to the side wall of the cabinet body, an installation cavity is arranged in the cabinet body, an installation plate is fixedly assembled in the installation cavity, connection cavities are arranged in the cabinet body in a bilateral symmetry mode, and connection grooves are arranged between the connection cavities and the installation cavity. First heat dissipation holes are evenly formed in the side wall of the connecting cavity, a sealing mechanism is fixedly assembled in the connecting cavity, and an auxiliary fire extinguishing mechanism is fixedly assembled on the inner side wall of the cabinet door. According to the utility model, the communicated heat dissipation design of the mounting cavity, the connecting cavity and the heat dissipation holes is adopted. By means of the design, it can be ensured that the internal environment temperature of the high-power frequency conversion equipment assembled in the device is kept stable in the operation process. Besides, a sealing mechanism is arranged in the connecting cavity, and once a fire occurs, a shielding frame in the sealing mechanism shields the heat dissipation holes, so that a relatively closed space is formed in the mounting cavity, and the fire is effectively prevented from spreading.

Description

Technical Field

[0001] This utility model relates to the field of electrical control cabinet technology, specifically to a high-power frequency conversion electrical control cabinet. Background Art

[0002] An electrical control cabinet is a metal enclosure designed to install and protect various electrical control equipment. These cabinets are typically made of explosion-proof metal materials, providing excellent protection and effectively shielding the internal electrical equipment from external environmental damage. Variable frequency drive (VFD) control cabinets are specifically designed for the installation and operation of VFD electrical equipment, and they are widely used in industrial and commercial sectors. However, existing VFD control cabinets have some shortcomings in practical use. Most have a simple structure and poor fire resistance. If the electrical equipment installed inside the VFD control cabinet malfunctions, especially when these malfunctions involve overheating or short circuits, a fire hazard can easily arise, and existing VFD control cabinets may not be able to respond to fire situations in a timely and effective manner. This can not only damage the electrical equipment itself but also potentially lead to larger safety accidents, threatening the safety of people and property. Therefore, we propose a high-power VFD control cabinet. Utility Model Content

[0003] The purpose of this utility model is to provide a high-power frequency conversion electrical control cabinet to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-power frequency conversion electrical control cabinet, comprising a cabinet body and a cabinet door, wherein the cabinet door is hinged to the side wall of the cabinet body, an installation cavity is provided inside the cabinet body, an installation plate is fixedly assembled in the installation cavity, connecting cavities are symmetrically provided inside the cabinet body, a connecting groove is provided between the connecting cavity and the installation cavity, first heat dissipation holes are uniformly provided on the side wall of the connecting cavity, a sealing mechanism is fixedly assembled in the connecting cavity, an auxiliary fire extinguishing mechanism is fixedly assembled on the inner side wall of the cabinet door, a smoke detection sensor is fixedly assembled on the inner side wall of the cabinet door, and a liquid supply assembly is fixedly assembled on the outer side wall of the cabinet door.

[0005] Preferably, the sealing mechanism includes a shielding frame, which is assembled in the connecting cavity. The side wall of the shielding frame is evenly provided with second heat dissipation holes. An electric telescopic rod that is fixedly connected to the bottom of the shielding frame is fixedly assembled in the connecting cavity. A limiting slide rail that penetrates the shielding frame is fixedly assembled in the connecting cavity.

[0006] Preferably, the auxiliary fire extinguishing mechanism includes an assembly frame, which is fixedly mounted on the side wall of the cabinet door. A spray pipe is rotatably connected inside the assembly frame, and nozzles are uniformly fixedly mounted on the side wall of the spray pipe.

[0007] Preferably, there are two spray pipes, which are symmetrically distributed on the side wall of the cabinet door.

[0008] Preferably, the liquid supply assembly includes a liquid storage tank, which is fixedly mounted on the side wall of the cabinet door. A liquid supply pump is fixedly mounted on the top of the liquid storage tank. The output end of the liquid supply pump is fixedly connected to a liquid distribution pipe that passes through the cabinet door. One end of a connecting hose is fixedly connected to one of the two output ends of the liquid distribution pipe, and the other end of the connecting hose is fixedly connected to the input end of the spray pipe.

[0009] Preferably, a drive assembly that is connected to the spray pipe is fixedly mounted on the side wall of the cabinet door. The drive assembly includes a telescopic cylinder, which is fixedly mounted on the outer side wall of the cabinet door. A drive frame with a through-opening slot is fixedly connected to the output end of the telescopic cylinder. The opening slot is opened on the side wall of the cabinet door. A drive rack is fixedly connected to the side wall of the drive frame. A drive gear is fixedly mounted at the end of the spray pipe. The drive rack meshes with the drive gear.

[0010] Preferably, a limiting frame is sleeved on the outer side wall of the drive frame, and the limiting frame is fixedly assembled to the side wall of the cabinet door.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: A high-power frequency converter control cabinet, compared to traditional control cabinets, adopts a connected heat dissipation design with an installation cavity, a connecting cavity, and heat dissipation holes. This design ensures that the internal ambient temperature of the high-power frequency converter equipment installed within remains stable during operation. Furthermore, a sealing mechanism is configured within the connecting cavity. In the event of a fire, the shielding frame within the sealing mechanism will block the heat dissipation holes, thereby forming a relatively sealed space within the installation cavity and effectively preventing the spread of fire. Simultaneously, an auxiliary fire extinguishing mechanism is installed on the side wall of the cabinet door. This mechanism can spray fire extinguishing solution into the installation cavity to further control the fire, prevent its occurrence, and improve the safety of this control cabinet during use. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the closure mechanism of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model.

[0016] Figure 5 for Figure 4 Detailed image of point a in the image.

[0017] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Mounting cavity; 4. Mounting plate; 5. Connecting cavity; 6. Connecting groove; 7. First heat dissipation hole; 8. Sealing mechanism; 81. Shielding frame; 82. Second heat dissipation hole; 83. Electric telescopic rod; 84. Limiting slide rail; 9. Auxiliary fire extinguishing mechanism; 91. Assembly frame; 92. Spray pipe; 93. Nozzle; 10. Liquid supply assembly; 101. Liquid storage tank; 102. Liquid supply pump; 103. Distributor pipe; 104. Connecting hose; 11. Drive assembly; 111. Telescopic cylinder; 112. Opening groove; 113. Drive frame; 114. Drive rack; 115. Drive gear; 116. Limiting frame; 12. Smoke detection sensor. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a technical solution: a high-power frequency converter control cabinet, including a cabinet body 1 and a cabinet door 2. The cabinet door 2 is hinged to the cabinet body 1. This control cabinet is mainly used for the installation of high-power frequency converter equipment and provides a stable working environment for the high-power frequency converter equipment.

[0020] The cabinet 1 has an installation cavity 3, and an installation plate 4 is fixedly installed in the installation cavity 3. The installation plate 4 is used for the installation and fixation of the equipment. The side wall of the installation plate 4 is evenly provided with installation holes. The evenly provided installation holes facilitate the adjustment of the installation position of the equipment according to the needs during the installation process. The cabinet 1 has connecting cavities 5 symmetrically distributed on the left and right sides. The connecting cavities 5 are located on the left and right sides of the installation cavity 3, respectively. The side wall of the connecting cavity 5 near the installation cavity 3 has a connecting groove 6. The side wall of the connecting cavity 5 away from the installation cavity 3 has a first heat dissipation hole 7 evenly provided. By setting the connecting cavity 5, the first heat dissipation hole 7 is connected to the inner cavity of the installation cavity 3, so that the heat generated by the equipment installed in the installation cavity 3 during operation can be dissipated outward in sequence through the connecting groove 6, the connecting cavity 5 and the first heat dissipation hole 7, effectively dissipating heat from the installation cavity 3 and maintaining the stability of the ambient temperature inside the installation cavity 3.

[0021] like Figure 2 and Figure 3As shown, a sealing mechanism 8 is fixedly installed in each of the two connecting cavities 5. Since this utility model is applicable to high-power frequency conversion equipment, when the equipment malfunctions and causes a fire hazard in the mounting cavity 3, the sealing mechanism 8 can act in time to seal the first heat dissipation hole 7, making the mounting cavity 3 a relatively sealed environment, which can effectively reduce the fire and prevent the fire from spreading further.

[0022] The sealing mechanism 8 includes a shielding frame 81. The side wall of the shielding frame 81 is evenly provided with second heat dissipation holes 82, which correspond to the positions of the first heat dissipation holes 7. The bottom of the shielding frame 81 is fixedly connected to an electric telescopic rod 83 that is symmetrically distributed in front and back. The electric telescopic rod 83 is electrically connected to an external power source and an external controller. When the electric telescopic rod 83 receives a command, it can drive the shielding frame 81 to move upward by a certain stroke. When the positions of the second heat dissipation holes 82 and the first heat dissipation holes 7 are staggered, the shielding frame 81 can close the first heat dissipation holes 7. The connecting cavity 5 is fixedly equipped with a limiting slide rail 84 that is symmetrically distributed in front and back. The shielding frame 81 is slidably connected to the limiting slide rail 84. By setting the limiting slide rail 84, the accuracy of the movement stroke of the shielding frame 81 is improved, ensuring that the shielding frame 81 can accurately and completely block the first heat dissipation holes 7 after moving upward.

[0023] like Figure 2 and Figure 4 As shown, an auxiliary fire extinguishing mechanism 9 is fixedly installed on the inner wall of the cabinet door 2. This mechanism can work in conjunction with the sealing mechanism 8 when a fire occurs in the installation cavity 3, effectively improving the fire extinguishing efficiency inside the installation cavity 3, thereby reducing the losses caused by the fire.

[0024] The auxiliary fire extinguishing mechanism 9 includes an assembly frame 91, which is fixedly mounted on the inner side wall of the cabinet door 2. Two spray pipes 92 are rotatably connected between the assembly frames 91. The two spray pipes 92 are symmetrically distributed at the top and bottom. Nozzles 93 are evenly fixedly mounted on the side wall of the spray pipes 92. A liquid supply assembly 10 connected to the spray pipes 92 is fixedly mounted on the outer side wall of the cabinet door 2. The liquid supply assembly 10 provides fire extinguishing solution to the spray pipes 92. The fire extinguishing solution is sprayed into the installation cavity 3 through the spray pipes 92 and the nozzles 93 to perform fire extinguishing operation in the installation cavity 3.

[0025] like Figure 1 and Figure 2As shown, the liquid supply assembly 10 includes a storage tank 101, which is mainly used for storing fire extinguishing solution. The fire extinguishing solution is mainly composed of water, penetrant, flame retardant and other additives. A liquid supply pump 102 is fixedly installed on the top of the storage tank 101. The liquid supply pump 102 is electrically connected to an external power source. The input end of the liquid supply pump 102 is fixedly connected to a suction pipe (not shown in the figure) inserted into the bottom of the storage tank 101. The output end of the liquid supply pump 102 is fixedly connected to a distribution pipe 103 that passes through the cabinet door 2. The two output ends of the distribution pipe 103 are respectively fixedly connected to the spray pipe 92 with connecting hoses 104. After the liquid supply pump 102 is powered on, it draws the fire extinguishing solution from the storage tank 101 and supplies it into the spray pipe 92 through the distribution pipe 103 and the connecting hoses 104. The solution is then sprayed into the installation cavity 3 through the nozzles 93 on the side wall of the spray pipe 92.

[0026] like Figure 2 and Figure 4 As shown, a drive assembly 11 is fixedly installed on the outer wall of the cabinet door 2, penetrating the cabinet door 2 and connected to the spray pipe 92. There are two sets of drive assemblies 11, which are arranged symmetrically on the left and right. By setting the drive assembly 11, the spray pipe 92 can be driven to perform reciprocating up and down tilting movements within a certain range, thereby changing the spray direction of the nozzle 93 within a certain angle, improving the uniformity of the distribution of the extinguishing solution in the installation cavity 3, and thus improving the extinguishing effect in the installation cavity 3.

[0027] The drive assembly 11 includes a telescopic cylinder 111, which is fixedly mounted on the outer side wall of the cabinet door 2. The telescopic cylinder 111 is a double-stroke telescopic cylinder, and its upper and lower output ends are respectively fixedly connected to a drive frame 113 with a through opening slot 112. The opening slot 112 is opened in the side wall of the cabinet door 2, and the drive frame 113 can move inside it by setting the opening slot 112. A drive rack 114 is fixedly connected to the side wall of the drive frame 113, and drive racks are fixedly connected to the left and right ends of the spray pipe 92. Wheel 115, drive gear 115 meshes with drive rack 114, telescopic cylinder 111 is connected to external air pump, the external air pump controls the action of the output end of telescopic cylinder 111. When telescopic cylinder 111 is started, its two output ends drive drive frame 113 and drive rack 114 to reciprocate up and down within a certain stroke, thereby causing drive rack 114 to drive drive gear 115 to rotate within a certain range, and adjust the spray direction of nozzle 93 on the side wall of spray pipe 92.

[0028] A limit frame 116 is fitted onto the outer wall of the drive frame 113. The limit frame 116 is fixedly connected to the side wall of the cabinet door 2. By setting the limit frame 116, the movement stroke of the drive frame 113 is limited, thereby improving the accuracy of the connection position between the drive rack 114 and the drive gear 115.

[0029] A smoke detection sensor 12 is fixedly installed on the inner side wall of the cabinet door 2. The smoke detection sensor 12 is electrically connected to an external power supply and an external controller. The smoke detection sensor 12 is used to provide early warning of fire conditions in the installation cavity 3.

[0030] Working Principle: This utility model is equipped with an installation cavity 3, in which a high-power frequency converter is installed on the side wall of the mounting plate 4. The utility model also includes a main switch for power-off control of the installed equipment. In the event of a fire, the main switch cuts off the power, preventing short circuits in the high-power frequency converter during firefighting and thus avoiding safety hazards. When a fire occurs, the smoke detection sensor 12 is triggered, transmitting a signal to an external controller. The external controller can be a computer or microcontroller. After receiving the data signal from the smoke detection sensor 12, the external controller controls the corresponding electronic components to perform actions. First, the electric telescopic rod 83 inside the enclosed mechanism 8 drives the shielding frame 8. 1. The first heat dissipation hole 7 is sealed off by the shielding bracket 81, making the installation cavity 3 a relatively sealed space. Then, the external controller controls the liquid supply pump 102 to start and the telescopic cylinder 111 to operate. The liquid supply pump 102 supplies the fire extinguishing solution in the storage tank 101 into the spray pipe 92, and then sprays it into the installation cavity 3 through the nozzle 93. Due to the reciprocating action of the two output ends of the telescopic cylinder 111, the nozzle 93 can be deflected within a certain angle, expanding the spray range in the installation cavity 3 and enhancing the fire extinguishing effect in the installation cavity 3. At the same time, the external controller can also be connected to alarm devices and other related reminder devices to promptly notify the corresponding personnel to handle the situation when a fire occurs.

Claims

1. A high-power frequency converter control cabinet, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet door (2) is hinged to the side wall of the cabinet body (1), characterized in that: The cabinet (1) has an installation cavity (3) inside, and an installation plate (4) is fixedly installed in the installation cavity (3). The cabinet (1) has a connecting cavity (5) symmetrically arranged on the left and right sides. A connecting groove (6) is provided between the connecting cavity (5) and the installation cavity (3). The side wall of the connecting cavity (5) is evenly provided with a first heat dissipation hole (7). A sealing mechanism (8) is fixedly installed in the connecting cavity (5). An auxiliary fire extinguishing mechanism (9) is fixedly installed on the inner side wall of the cabinet door (2). A smoke detection sensor (12) is fixedly installed on the inner side wall of the cabinet door (2). A liquid supply assembly (10) is fixedly installed on the outer side wall of the cabinet door (2).

2. The high-power frequency conversion electrical control cabinet according to claim 1, characterized in that: The closing mechanism (8) includes a shielding frame (81), which is assembled in the connecting cavity (5). The side wall of the shielding frame (81) is evenly provided with second heat dissipation holes (82). An electric telescopic rod (83) fixedly connected to the bottom of the shielding frame (81) is fixedly assembled in the connecting cavity (5). A limiting slide rail (84) penetrating the shielding frame (81) is fixedly assembled in the connecting cavity (5).

3. A high-power frequency conversion electrical control cabinet according to claim 1, characterized in that: The auxiliary fire extinguishing mechanism (9) includes an assembly frame (91), which is fixedly mounted on the side wall of the cabinet door (2). A spray pipe (92) is rotatably connected inside the assembly frame (91), and nozzles (93) are uniformly fixedly mounted on the side wall of the spray pipe (92).

4. A high-power frequency conversion electrical control cabinet according to claim 3, characterized in that: There are two spray pipes (92), which are symmetrically distributed on the side wall of the cabinet door (2).

5. A high-power frequency conversion electrical control cabinet according to claim 1, characterized in that: The liquid supply assembly (10) includes a liquid storage tank (101), which is fixedly mounted on the side wall of the cabinet door (2). A liquid supply pump (102) is fixedly mounted on the top of the liquid storage tank (101). The output end of the liquid supply pump (102) is fixedly connected to a liquid distribution pipe (103) that passes through the cabinet door (2). The two output ends of the liquid distribution pipe (103) are fixedly connected to one end of a connecting hose (104). The other end of the connecting hose (104) is fixedly connected to the input end of the spray pipe (92).

6. A high-power frequency conversion electrical control cabinet according to claim 3, characterized in that: The side wall of the cabinet door (2) is fixedly equipped with a drive assembly (11) that is connected to the spray pipe (92). The drive assembly (11) includes a telescopic cylinder (111). The telescopic cylinder (111) is fixedly assembled on the outer side wall of the cabinet door (2). The output end of the telescopic cylinder (111) is fixedly connected to a drive frame (113) that passes through an opening slot (112). The opening slot (112) is opened on the side wall of the cabinet door (2). The side wall of the drive frame (113) is fixedly connected to a drive rack (114). The end of the spray pipe (92) is fixedly equipped with a drive gear (115). The drive rack (114) meshes with the drive gear (115).

7. A high-power frequency conversion electrical control cabinet according to claim 6, characterized in that: The outer side wall of the drive frame (113) is fitted with a limiting frame (116), which is fixedly mounted on the side wall of the cabinet door (2).

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