Buried electrical cabinet

Abstract

The utility model relates to a buried electrical cabinet, which belongs to the technical field of electrical cabinets, and comprises an outer cabinet body, a mounting structure, and a power supply and a transformer which are arranged in the outer cabinet body through the mounting structure, the mounting structure comprises a supporting frame and a fixing cover, the supporting frame is arranged in the outer cabinet body, the top of the supporting frame is open, and the periphery of the top of the supporting frame is provided with an outer edge extending outwards; mounting plates are arranged on the front and rear sides of the power supply and the transformer respectively, placing grooves corresponding to the mounting plates are formed in the outer edges of the front and rear sides of the supporting frame, and the power supply and the transformer can be hung in the placing grooves through the corresponding mounting plates respectively; a sealing gasket is arranged at the bottom of the fixing cover, the thickness of the mounting plate is equal to or larger than the depth of the containing groove, and the fixing cover can tightly cover the top of the supporting frame after mounting is completed. The LED lamp has the advantages of being reasonable in structure, convenient to disassemble and assemble, stable in installation and good in sealing performance and heat dissipation performance.

Description

Technical Field

[0001] The utility model relates to the field of electrical cabinets, in particular to an underground electrical cabinet. Background Art

[0002] Electrical cabinets are made of steel and are used to protect the normal operation of components. They are widely used in the chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, transportation industry, etc.

[0003] The underground electrical cabinet is a cabinet whose shell is buried underground. The top surface is usually covered with a high-strength stainless steel cover. After installation, the cover on the top of the underground electrical cabinet is flush with the ground. Therefore, compared with ordinary distribution boxes, the underground electrical cabinet has the advantages of not occupying roads, not taking up space, and not affecting the flow of people and vehicles. It is suitable for squares, roads, exhibition halls, parks, factories, airports and other places.

[0004] Underground electrical cabinets are buried underground, and the electrical equipment inside them generates heat during operation. The cabinet body is usually provided with heat dissipation holes for heat dissipation, but at the same time, it is also necessary to prevent rainwater from entering the cabinet body and damaging the internal electrical equipment. Therefore, in order to achieve good sealing performance, existing underground electrical cabinets are often provided with multiple layers of sealing, and in order to ensure the stability of the electrical equipment, a large number of bolts or screws are used for structural fixation, which can easily cause inconvenience in disassembly and assembly. Its structural design is reasonable, disassembly and assembly are convenient, installation is stable, and it has good sealing and heat dissipation. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an underground electrical cabinet with reasonable structure, convenient assembly and disassembly, stable installation, good sealing and heat dissipation.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A buried electrical cabinet comprises an outer cabinet body, a mounting structure, and a power supply and a transformer arranged inside the outer cabinet body via the mounting structure; the mounting structure comprises a support frame and a fixed cover, the support frame being arranged inside the outer cabinet body, the top of the support frame being open, and the top of the support frame being provided with outer edges extending outwards; a mounting plate is respectively provided on the front and rear sides of the power supply, and the front and rear sides of the transformer, and placement grooves are provided on the outer edges of the front and rear sides of the support frame corresponding to the mounting plates, and the power supply and transformer can be respectively hung on the placement grooves via the corresponding mounting plates; a sealing gasket is provided at the bottom of the fixed cover, and the thickness of the mounting plate is equal to or greater than the depth of the placement groove. After installation is completed, the fixed cover can be tightly covered with the top of the support frame so that the mounting plate can be sealed and pressed between the fixed cover and the support frame.

[0008] In a preferred embodiment of the present invention, a mounting hole or a U-shaped mounting groove is provided on the mounting plate, and a positioning column protruding upward is provided in the placement groove corresponding to the mounting hole or the U-shaped mounting groove; the top of the positioning column is flush with the outer edge of the support frame.

[0009] In a preferred embodiment of this solution, the mounting structure further comprises a U-shaped frame; the U-shaped frame is mounted within the outer cabinet, with a support plate horizontally disposed on each of the two side panels of the U-shaped frame; the support frame can be mounted on the two support plates of the U-shaped frame via its left and right outer edges; each end of the support plate has a threaded hole, and the fixing cover and the outer edge of the support frame have through-holes corresponding to the threaded holes. Thus, the fixing cover and the support frame can be fixed to the U-shaped frame via the threaded holes and screws, thereby simultaneously achieving fixed installation of the power supply and transformer.

[0010] In a preferred embodiment of this solution, a plurality of reinforcing ribs are provided on the inner side of the side panels of the U-shaped frame, and U-shaped reinforcement plates are vertically fixed to both ends of the side panels of the U-shaped frame.

[0011] In a preferred embodiment of the present solution, the side walls of the support frame are provided with holes for cables to pass through, and the side walls of the outer cabinet are provided with power input and output connectors.

[0012] In a preferred embodiment of this solution, holes are provided on the front and rear side walls of the support frame to facilitate heat dissipation of the power supply and transformer.

[0013] In a preferred embodiment of this solution, the outer cabinet includes a box body and an outer cover; the outer cover is provided with screw holes corresponding one-to-one with the top of the box body; an outer waterproof ring is provided between the outer cover and the box body for sealing the box body; an inner protective frame extends upward from the inner edge of the box body top, and an upper concave cavity is provided at the top of the outer cover corresponding to the inner protective frame; an inner waterproof ring is also provided at the top of the inner protective frame. When the outer cover is closed over the top of the box body, the inner wall of the upper concave cavity can press against the inner waterproof ring, thereby ensuring the sealing performance of the box body.

[0014] In a preferred embodiment of this solution, a limit edge is provided at the top of the inner protective frame. The thickness of the inner waterproof ring is greater than the height of the limit edge, so that the top of the inner waterproof ring protrudes upward from the limit edge after installation. The design of the inner waterproof ring and the inner protective frame further improves the sealing performance of the device.

[0015] In a preferred embodiment of this scheme, four mounting blocks are provided at the bottom of the U-shaped frame, and an inverted U-shaped mounting seat is provided corresponding to the mounting blocks at the bottom of the box body. The mounting blocks are fixed to the inverted U-shaped mounting seat by screws or bolts to achieve the installation and fixation of the U-shaped frame.

[0016] In a preferred embodiment of the present scheme, after installation, there is a gap between the front and rear outer walls of the support frame and the front and rear inner walls of the box body, so that an air outlet cavity and an air inlet cavity can be formed between the front and rear outer walls of the support frame and the front and rear inner walls of the box body respectively; an air outlet duct is provided on the front top side of the outer cover, and an air inlet duct is provided on the rear top side; the bottoms of the air outlet duct and the air inlet duct are respectively located above the air outlet cavity and the air inlet cavity, and are correspondingly connected to the air outlet cavity and the air inlet cavity; the hole on the front side wall of the support frame is a circular air outlet hole, and the hole on the rear side wall is a strip air inlet hole; an induced draft fan is provided on the inner side of the front wall of the support frame at the air outlet hole to guide the gas in the support frame from the circular air outlet hole into the air outlet cavity. The design advantage of the strip air inlet hole is that the strip hole can make the wind entering the support frame more uniform.

[0017] In a preferred embodiment of this solution, a second induced draft fan is provided in the air outlet duct, and a filter is provided in the air inlet duct.

[0018] The beneficial effects of the utility model are:

[0019] (1) This solution achieves sealing and waterproofing of the electrical cabinet through the outer cabinet body, and fixes electrical equipment such as power supplies and transformers inside the outer cabinet body through the mounting structure. The power supplies and transformers are installed by hanging them using their mounting plate structure, and then the mounting plate is tightly pressed together by cooperating with the fixed cover and the support frame. Therefore, during the disassembly process of this solution, the locking state of the power supply and transformer can be released by removing the outer cover and the fixed cover in turn, and the power supply and transformer can be directly extracted upward for inspection or replacement, which is convenient for disassembly and assembly. In addition, the mounting holes or U-shaped mounting grooves on the mounting plate of this solution are compatible with the positioning columns, thereby realizing the limited hanging of the power supply and transformer, and the structure is simple and stable.

[0020] (2) In this solution, an outer waterproof ring is provided between the outer cover and the box body, and an inner waterproof ring is also provided on the top of the inner protective frame at the top of the support frame. When the outer cover is closed on the top of the box body, the inner wall of the top of the upper concave cavity can press the inner waterproof ring tightly, thereby achieving double waterproofing and ensuring the sealing and waterproof performance of the interior of the box body;

[0021] In addition, an air outlet cavity and an air inlet cavity are respectively formed between the front and rear outer walls of the support frame and the front and rear inner walls of the outer cabinet, and an air outlet hole and an air inlet hole are respectively opened on the front and rear walls of the support frame; an air outlet duct and an air inlet duct are respectively provided in front of the top of the outer cover; the bottom ends of the air outlet duct and the air inlet duct are respectively connected with the air outlet cavity and the air inlet cavity, and at the same time, an induced draft fan 1 is provided at the air outlet hole, and an induced draft fan 2 is provided at the air outlet duct. The external air of the equipment enters the air inlet cavity from the air inlet duct. The induced draft fan 1 can introduce the gas in the air inlet cavity into the support frame, and then introduce it into the air outlet cavity from the air inlet hole, and then be guided out of the outer cabinet by the induced draft fan 2, so that the heat inside the device is brought out by the gas, and the heat dissipation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the support frame of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the support frame of the utility model installed in the outer cabinet;

[0024] Figure 3 This is a schematic diagram of the U-shaped frame structure of the utility model;

[0025] Figure 4 It is a structural diagram of the utility model;

[0026] Figure 5 It is a schematic diagram of the transformer mounting plate of the utility model;

[0027] Figure 6 This is a schematic diagram of another transformer mounting plate of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0030] It should be noted that the terms "first", "second" etc. in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the application described herein. In this application, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "center", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the directions or positional relationships shown in the accompanying drawings.

[0031] like Figure 1 、 Figure 2 、 Figure 4 As shown, the underground electrical cabinet includes an outer cabinet body, a mounting structure, a power supply 15, and a transformer 16. The power supply 15 and the transformer 16 are arranged inside the outer cabinet body through the mounting structure; the outer cabinet body serves as the external shell structure of the underground electrical cabinet to ensure the sealing and waterproof performance of the underground electrical cabinet.

[0032] To be more specific, the installation structure includes a support frame 3 and a fixed cover 4. The top of the support frame 3 is open, and the top of the support frame 3 is provided with an outer edge extending outward; the side wall of the support frame 3 is provided with holes for cables to pass through and out, and the side wall of the outer cabinet is provided with power input and output connectors; the front and rear sides of the power supply 15, as well as the front and rear sides of the transformer 16 are respectively provided with a mounting plate 17, and the outer edges of the front and rear sides of the support frame 3 are provided with placement grooves 301 corresponding to the mounting plates 17; a sealing gasket 401 is provided at the bottom of the fixed cover 4, and the thickness of the mounting plate 17 is greater than the depth of the placement groove 301. After the installation is completed, the support frame 3 and the fixed cover 4 are hung at the placement groove 301, and the fixed cover 4 is tightly covered with the top of the support frame 3.

[0033] In this embodiment, reference Figure 5 As shown, the mounting plate 17 is provided with a mounting hole (or as shown in FIG. Figure 6 The U-shaped mounting groove shown in the figure) is provided with an upwardly protruding positioning column 3011 corresponding to the mounting hole of the placement groove 301; the top of the positioning column 3011 is flush with the outer edge of the support frame 3. The advantage of this design is that while the mounting plate 17 is pressed between the fixed cover 4 and the support frame 3, the positioning column 3011 can prevent the electrical equipment from shifting under strong shaking, thereby further ensuring the stability of the installation.

[0034] refer to Figure 3 As shown, further, in this embodiment, the mounting structure also includes a U-shaped frame 23; the U-shaped frame 23 is mounted within the outer cabinet, with a support plate 20 horizontally mounted on each of the two side panels of the U-shaped frame 23; the support frame 3 can be mounted on the two support plates 20 of the U-shaped frame 23 via its left and right outer edges; each end of the support plate 20 has a threaded hole 2001, and the fixed cover 4 and the outer edge of the support frame 3 have through-holes corresponding to the threaded holes 2001. Thus, the fixed cover 4 and the support frame 3 can be fixed to the U-shaped frame 23 via the threaded holes and screws, thereby simultaneously achieving the fixed installation of the power supply 15 and the transformer 16.

[0035] In this embodiment, four mounting blocks 2032 are provided at the bottom of the U-shaped frame 23, and an inverted U-shaped mounting seat is provided at the bottom of the box body 1 corresponding to the mounting blocks 2032. The mounting blocks 2032 are fixed to the inverted U-shaped mounting seat by bolts to achieve the installation and fixation of the U-shaped frame 23.

[0036] In order to enhance the stability of the installation structure, further, in this solution, a plurality of reinforcing ribs 2301 are provided on the inner side of the side panels of the U-shaped frame 23 , and U-shaped reinforcement plates 2302 are vertically fixed at both ends of the side panels of the U-shaped frame 23 .

[0037] In this embodiment, the outer cabinet includes a box body 1 and an outer cover 2; the outer cover 2 is provided with screw holes corresponding one to one with the top of the box body 1, and an outer waterproof ring 11 is provided between the outer cover 2 and the box body 1 for sealing the box body 1; an inner protective frame 18 extends upward from the inner edge of the top of the box body 1, and an upper concave cavity is provided on the top of the outer cover 2 corresponding to the inner protective frame 18; an inner waterproof ring 19 is also provided on the top of the inner protective frame 18. When the outer cover 2 covers the top of the box body 1, the inner wall of the top of the upper concave cavity can press the inner waterproof ring 19 tightly; the design of the outer waterproof ring 11 and the inner waterproof ring 19 ensures double sealing and waterproofing inside the box body.

[0038] Furthermore, in this solution, a stopper edge is provided at the top of the inner protective frame 18. The thickness of the inner waterproof ring 19 is greater than the height of the stopper edge, so that the top of the inner waterproof ring 19 protrudes upward from the stopper edge after installation. The design of the inner waterproof ring and the inner protective frame further improves the sealing performance of the device.

[0039] In this embodiment, after the installation is completed, there is a gap between the front and rear outer walls of the support frame 3 and the front and rear inner walls of the box body 1, so that an air outlet cavity and an air inlet cavity can be formed between the front and rear outer walls of the support frame 3 and the front and rear inner walls of the box body 1 respectively; the outer cover 2 is provided with an air outlet duct 6 on the front side of its top, and an air inlet duct 7 on the rear side of its top; the bottoms of the air outlet duct 6 and the air inlet duct 7 are respectively located above the air outlet cavity and the air inlet cavity, and are correspondingly connected to the air outlet cavity and the air inlet cavity, and an induced draft fan 2 is provided in the air outlet duct 6, and a filter is provided in the air inlet duct 7, through which dust and water vapor in the incoming air can be filtered; the hole on the front side wall of the support frame 3 is a circular air outlet hole 9, and the hole on the rear side wall is a strip-shaped air inlet hole 8, so that the incoming air is more uniform; on the inner side of the front wall of the support frame 3, an induced draft fan 5 is provided at the air outlet to guide the gas in the support frame 3 from the circular air outlet hole 9 into the air outlet cavity.

[0040] Installation steps of underground electrical cabinet:

[0041] S1, fix the U-shaped frame 23 inside the box 1 with bolts;

[0042] S2, placing the support frame 3 on the support plate 20 of the U-shaped frame 23;

[0043] S3, hang the power supply 15 and transformer 16 on the support frame 3, and make the mounting plate 17 be located in the placement groove 301;

[0044] S4, cover the fixed cover 4 and lock the fixed cover 4 and the U-shaped frame 23 with screws;

[0045] S5, placing the outer waterproof ring 11 and the inner waterproof ring 19 on the top of the box 1;

[0046] S6. Cover the outer cover 2 and fasten the outer cover 2 and the box body 1 with screws.

[0047] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. An underground electrical cabinet, characterized in that: It includes an outer cabinet, a mounting structure, and a power supply (15) and a transformer (16) arranged inside the outer cabinet via the mounting structure; The mounting structure comprises a support frame (3) and a fixed cover (4); the support frame (3) is arranged inside the outer cabinet; the top of the support frame (3) is open; and the top of the support frame (3) is provided with an outer edge extending outwards around the periphery; The front and rear sides of the power supply (15) and the front and rear sides of the transformer (16) are respectively provided with a mounting plate (17); the outer edges of the front and rear sides of the support frame (3) are provided with placement grooves (301) corresponding to the mounting plates (17); the power supply (15) and the transformer (16) can be respectively hung on the placement grooves (301) via the corresponding mounting plates (17); A sealing gasket (401) is provided at the bottom of the fixed cover (4), and the thickness of the mounting plate (17) is equal to or greater than the depth of the placement groove (301). After installation is completed, the fixed cover (4) can be tightly covered with the top of the support frame (3), so that the mounting plate (17) can be sealed and pressed between the fixed cover (4) and the support frame (3).

2. The underground electrical cabinet according to claim 1, characterized in that: The mounting plate (17) is provided with a mounting hole or a U-shaped mounting groove, and the placement groove (301) is provided with a positioning column (3011) protruding upwards corresponding to the mounting hole or the U-shaped mounting groove; The top of the positioning column (3011) is flush with the outer edge of the support frame (3).

3. The underground electrical cabinet according to claim 2, characterized in that: The mounting structure further comprises a U-shaped frame (23); The U-shaped frame (23) is installed in the outer cabinet, and a support plate (20) is horizontally provided on each of the two side plates of the U-shaped frame (23); The support frame (3) can be mounted on two support plates (20) of the U-shaped frame (23) via its left and right outer edges; The support plate (20) is provided with a threaded hole (2001) at each end, and the fixed cover (4) and the outer edge of the support frame (3) are provided with through holes corresponding to the threaded holes (2001).

4. The underground electrical cabinet according to claim 3, characterized in that: A plurality of reinforcing ribs (2301) are provided on the inner side of the side plate of the U-shaped frame (23), and U-shaped reinforcing plates (2302) are vertically fixed to both ends of the side plate of the U-shaped frame (23).

5. The underground electrical cabinet according to claim 3, characterized in that: The side wall of the support frame (3) is provided with holes for cables to pass through, and the side wall of the outer cabinet is provided with power input and output connectors.

6. The underground electrical cabinet according to claim 3, characterized in that: The front and rear side walls of the support frame (3) are both provided with holes to facilitate heat dissipation of the power supply (15) and the transformer (16).

7. The underground electrical cabinet according to any one of claims 1 to 6, characterized in that: The outer cabinet comprises a box body (1) and an outer cover (2); The outer cover (2) is provided with screw holes corresponding one to one with the top of the box body (1), and an outer waterproof ring (11) is provided between the outer cover (2) and the box body (1) for sealing the box body (1); An inner protective frame (18) extends upward from the inner edge of the top of the box body (1), and an upper concave cavity is provided on the top of the outer cover (2) corresponding to the inner protective frame (18); The top of the inner protection frame (18) is also equipped with an inner waterproof ring (19). When the outer cover (2) covers the top of the box body (1), the inner wall of the top of the upper concave cavity can press the inner waterproof ring (19).

8. The underground electrical cabinet according to claim 7, characterized in that: A limiting outer edge is provided on the top of the inner protective frame (18), and the thickness of the inner waterproof ring (19) is greater than the height of the limiting outer edge, so that the top of the inner waterproof ring (19) protrudes upward from the limiting outer edge after installation.

9. The underground electrical cabinet according to claim 6, characterized in that: Four mounting blocks (2032) are provided at the bottom of the U-shaped frame (23); an inverted U-shaped mounting seat is provided at the bottom of the box body (1) corresponding to the mounting blocks (2032); the mounting blocks (2032) are fixed to the inverted U-shaped mounting seat by screws or bolts to achieve the installation and fixation of the U-shaped frame (23).

10. The underground electrical cabinet according to claim 6, characterized in that: After installation, there is a gap between the front and rear outer walls of the support frame (3) and the front and rear inner walls of the box body (1), so that support box (3) An air outlet cavity and an air inlet cavity can be formed between the front and rear outer walls and the front and rear inner walls of the box body (1); The outer cover (2) is provided with an air outlet duct (6) on the front side of its top, and an air inlet duct (7) on the rear side of its top; The bottoms of the air outlet pipe (6) and the air inlet pipe (7) are respectively located above the air outlet cavity and the air inlet cavity, and are connected to the air outlet cavity and the air inlet cavity respectively; The front side wall hole of the support frame (3) is a circular air outlet hole (9), and the rear side wall hole is a strip-shaped air inlet hole (8); An induced air fan (5) is provided on the inner side of the front wall of the support frame (3) at the air outlet to guide the gas in the support frame (3) into the air outlet cavity from the air outlet circular hole (9).

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