An improved high and low voltage switch cabinet

Abstract

The present invention relates to the field of switch cabinet technology, and in particular to an improved high and low voltage switch cabinet, comprising a prefabricated chassis structure, a low voltage AC switch cabinet is arranged on the top of the prefabricated chassis structure, an inductive air supply structure is arranged on the outside of the low voltage AC switch cabinet, an exchange return structure is arranged on the top of the low voltage AC switch cabinet, the prefabricated chassis structure comprises a pre-buried frame plate, the low voltage AC switch cabinet comprises a cabinet body, an upper clamping plate is fixedly arranged at the bottom of the cabinet body, the inductive air supply structure comprises an air supply pipe, a valve port mechanism is arranged at the bottom of the air supply pipe, and one end of the air supply pipe is fixedly connected to an end pipe structure. The present invention forms an anchor assembly of the low voltage AC switch cabinet and an efficient circulation and cooling effect on the internal components through the prefabricated chassis structure, the low voltage AC switch cabinet, the inductive air supply structure and the exchange return structure.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, in particular to an improved high and low voltage switch cabinet. Background Art

[0002] High and low voltage switchgear is a device used to connect high and low voltage cables. The high voltage is transmitted through the high voltage cabinet, and then stepped down to the low voltage cabinet through the transformer. Then the low voltage cabinet steps down the voltage to each power distribution box. The switchgear is usually composed of a series of electrical equipment such as circuit breakers. Take the low voltage AC switchgear installed in an industrial plant as an example.

[0003] Some low-voltage AC switch cabinets installed in industrial plants have the problem of moisture on the bottom of the cabinet. At the same time, the built-in exhaust fan has a low efficiency in exhausting the air accumulated in the internal components. Therefore, an improved high and low voltage switch cabinet is proposed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an improved high and low voltage switch cabinet to solve the problem of moisture on the bottom of the cabinet body of some low voltage AC switch cabinets installed in industrial plants mentioned in the above background technology, and the problem of low efficiency of exhausting the hot air accumulated in internal components by using a built-in exhaust fan.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An improved high and low voltage switch cabinet, comprising a prefabricated chassis structure, the key technology of which is: a low voltage AC switch cabinet is arranged on the top of the prefabricated chassis structure, an inductive air supply structure is arranged on the outside of the low voltage AC switch cabinet, an exchange return structure is arranged on the top of the low voltage AC switch cabinet, the prefabricated chassis structure comprises an embedded frame plate, a cable pipe, a gas pipe and a return pipe are fixedly arranged inside the embedded frame plate, a plate frame is fixedly arranged on the top of the embedded frame plate, a lower card plate is fixedly arranged on the top of the plate frame, the low voltage AC switch cabinet comprises a cabinet body, an upper card plate is fixedly arranged at the bottom of the cabinet body, the inductive air supply structure comprises an air supply pipe, a valve port mechanism is arranged at the bottom of the air supply pipe, one end of the air supply pipe is fixedly connected with an end pipe structure, the valve port mechanism comprises a cylinder fixedly arranged at the top and bottom of the bottom pipe of the air supply pipe, a column box is fixedly arranged on the top of the cylinder arranged at the top, the column box The top and side walls are both embedded and fixed with copper-aluminum thermal conductive gaskets, the column box is filled with a heat-sensitive paraffin layer, the bottom of the heat-sensitive paraffin layer is provided with an adjusting rod, the bottom of the column box and the first damping spring are fixedly provided between the side plates of the adjusting rod, the bottom end of the cylinder arranged at the bottom is fixedly provided with a connecting tube, the bottom end of the adjusting rod is fixedly provided with a cover block, the inner wall of the connecting tube is fixedly provided with a circular plate, the end pipe structure includes an air outlet tube, the outer side of the air outlet tube is fixedly connected with a perforated tube, the exchange reflux structure includes a reflux box, the left and right ends of the reflux box are fixedly connected with an exhaust pipe, the inner wall plate of the reflux box and one end of the exhaust pipe are fixedly connected with a copper tube, a sleeve is embedded and fixedly provided inside the bottom end of the reflux box, a limiting cylinder and a second damping spring are fixedly provided on the inner wall of the top end of the reflux box, the top of the sleeve is slidably embedded with the chuck, and the top of the chuck is fixedly provided with a guide rod.

[0007] Preferably, the adjusting rod is fixed by welding the top disc and the bottom column, a silicone pad is fixed between the bottom of the column of the adjusting rod and the top of the cover block, and the bottom of the through hole arranged inside the circular plate is in close contact with the silicone pad.

[0008] Furthermore, the cylinder and column box at the top are both located inside the bottom of the cabinet, and the bottom of the connecting cylinder is fixedly connected to the gas pipe through the threaded fixing arrangement of the external stud and the flange.

[0009] Furthermore, the air supply pipe is fixedly engaged with the inner wall of the cabinet, the end pipe structure is located inside the cabinet, and the top of the cable pipe is fixedly connected to the inside of the cabinet.

[0010] Furthermore, there are two exhaust pipes, two copper tubes, two limit tubes and two guide rods, and the vertical center axis of the chuck is the center line of the symmetrical distribution of the exhaust pipes, two copper tubes, two limit tubes and two guide rods.

[0011] Furthermore, the sleeve is fixedly connected to the top of the cabinet, the bottom end of the exhaust pipe is fixedly connected to the return pipe through the threaded fixing of the external stud and the flange, and the exhaust pipe is fixedly connected to the outer wall of the cabinet.

[0012] Furthermore, the bottom end of the second damping spring is fixedly arranged with the top support rod of the chuck, and the outer side of the top of the guide rod is slidably engaged with the inside of the limiting cylinder.

[0013] After adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, the top surface of the embedded frame is flush with the horizontal base surface, and the cable pipe, gas pipe and return pipe arranged inside the embedded frame are all preset pipeline structures. The gas pipe is fixedly connected to the cold air pipe of the external air conditioning and refrigeration equipment, and the return pipe is connected to the external pipeline of the factory to discharge the mixed air after the heat exchange. The lower card plate set on the top of the plate frame is placed in an inlaid manner with the upper card plate set at the bottom of the cabinet, which can effectively reduce the impact of moisture on the horizontal base surface of the factory on the bottom of the cabinet.

[0015] 2. In the present invention, the first damping spring is always in a stretched state, and the second damping spring is always in a compressed state. The partition chambers inside the cabinet where instruments and lines are placed are all provided with air guide holes to connect the air inside the cabinet. The air with accumulated heat inside the cabinet conducts heat through the copper-aluminum thermal conductive gasket embedded inside the column box, and the thermally sensitive paraffin layer filled inside the column box expands due to heat, driving the adjusting rod to move downward. At this time, the cover block is out of contact with the circular plate, and the air-conditioned cold air inside the gas pipe enters the air supply pipe through the through hole inside the circular plate. The air supply pipe is connected to the air outlet and the orifice pipe, and air-conditioned cold air can be poured into the cabinet. The sinking of the cold air can squeeze and lift the air with accumulated heat inside for heat exchange and cooling.

[0016] 3. In the present invention, when a certain pressure is generated inside, the air squeezes and pushes open the chuck, circulates and cools down through the copper tube, and then enters the return pipe through the exhaust pipe. When the temperature of the air inside the cabinet drops, the thermosensitive paraffin layer shrinks and resets, and the vertical tensile force formed by the first damping spring serves to accelerate the reset of the cover block. Subsequently, the internal air pressure inside the cabinet is insufficient, and the second damping spring drives the chuck and sleeve to reset to form a closed structure. Without relying on the electric control valve tube structure, the automatic exchange and exhaust of the hot air inside the cabinet is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 A schematic diagram of the structure at A;

[0019] Figure 3 This is a schematic diagram of the installation structure of the embedded frame plate of the present invention;

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at B;

[0021] Figure 5 This is a schematic diagram of the induction gas supply structure of the present invention;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at C;

[0023] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at D;

[0024] Figure 8 This is a schematic diagram of the installation structure of the adjustment rod of the present invention;

[0025] Fig. 9 It is a schematic diagram of the circular plate structure of the present invention;

[0026] Fig.10 It is a schematic diagram of the cross-sectional structure of the reflux box of the present invention;

[0027] Fig.11 For the present invention Fig.10 Schematic diagram of the structure at E.

[0028] In the figure: 1. Prefabricated chassis structure; 11. Pre-buried frame plate; 12. Cable pipe; 13. Gas pipe; 14. Return pipe; 15. Plate frame; 16. Lower cardboard; 2. Low-voltage AC switch cabinet; 21. Cabinet; 22. Upper cardboard; 3. Inductive gas supply structure; 31. Gas supply pipe; 32. Valve port mechanism; 321. Cylinder; 322. Column box; 323. Copper-aluminum thermal pad; 324. Thermistor Wax layer; 325, adjusting rod; 326, first damping spring; 327, connecting tube; 328, cover block; 329, round plate; 33, end tube structure; 331, air outlet tube; 332, hole tube; 4, exchange reflux structure; 41, reflux box; 42, exhaust pipe; 43, copper tube; 44, sleeve; 45, limit tube; 46, second damping spring; 47, chuck; 48, guide rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See attached Figure 1-11 , the technical solution of the embodiment of the present invention is as follows:

[0031] The improved high and low voltage switch cabinet comprises a prefabricated chassis structure 1, a low voltage AC switch cabinet 2 is arranged on the top of the prefabricated chassis structure 1, an induction gas supply structure 3 is arranged on the outside of the low voltage AC switch cabinet 2, an exchange return structure 4 is arranged on the top of the low voltage AC switch cabinet 2, the prefabricated chassis structure 1 comprises an embedded frame plate 11, a cable tube 12, a gas supply pipe 13 and a return pipe 14 are fixedly arranged inside the embedded frame plate 11, a plate frame 15 is fixedly arranged on the top of the embedded frame plate 11, and a lower card is fixedly arranged on the top of the plate frame 15 The low-voltage AC switch cabinet 2 includes a cabinet body 21, an upper cardboard 22 is fixedly arranged at the bottom of the cabinet body 21, the induction gas supply structure 3 includes a gas supply pipe 31, a valve port mechanism 32 is arranged at the bottom of the gas supply pipe 31, and an end pipe structure 33 is fixedly connected to one end of the gas supply pipe 31. The valve port mechanism 32 includes a cylinder 321 fixedly arranged at the top and bottom of the bottom pipe of the gas supply pipe 31, and a column box 322 is fixedly arranged at the top of the cylinder 321 arranged at the top, and the top and side walls of the column box 322 are both fixedly arranged with copper-aluminum conductors. The column box 322 is filled with a thermosensitive paraffin layer 324, and an adjusting rod 325 is arranged at the bottom of the thermosensitive paraffin layer 324. A first damping spring 326 is fixedly arranged between the bottom of the column box 322 and the side plate of the adjusting rod 325. A connecting cylinder 327 is fixedly arranged at the bottom of the cylinder 321 arranged at the bottom, a cover block 328 is fixedly arranged at the bottom of the adjusting rod 325, and a circular plate 329 is fixedly arranged on the inner wall of the connecting cylinder 327. The end pipe structure 33 includes an air outlet cylinder 331, an air outlet cylinder 332, and an air outlet cylinder 333. The outer side of 31 is fixedly connected with a perforated tube 332, the exchange reflux structure 4 includes a reflux box 41, the left and right ends of the reflux box 41 are fixedly connected with exhaust pipes 42, the inner wall plate of the reflux box 41 and one end of the exhaust pipe 42 are fixedly connected with a copper tube 43, a sleeve 44 is fixedly arranged inside the bottom end of the reflux box 41, a limiting cylinder 45 and a second damping spring 46 are fixedly arranged on the inner wall of the top end of the reflux box 41, the top of the sleeve 44 is slidably arranged in an embossing manner with a chuck 47, and a guide rod 48 is fixedly arranged on the top end of the chuck 47.

[0032] The adjusting rod 325 is fixed by welding the top disc and the bottom column. A silicone pad is fixed between the bottom of the column of the adjusting rod 325 and the top of the cover block 328. The bottom of the through hole set inside the circular plate 329 is in contact with the silicone pad. The cylinder 321 and the column box 322 at the top are both located inside the bottom end of the cabinet 21. The bottom end of the connecting tube 327 is fixedly connected to the gas pipe 13 through the threaded fixing of the external stud and the flange. The gas supply pipe 31 is fixedly engaged with the inner wall of the cabinet 21, the end pipe structure 33 is located inside the cabinet 21, and the top of the cable pipe 12 is fixedly connected to the inside of the cabinet 21. There are two exhaust pipes 42, copper tubes 43, limit tubes 45 and guide rods 48. The vertical center axis of the chuck 47 is the center line of the symmetrical distribution of the above-mentioned exhaust pipes 42, copper tubes 43, limit tubes 45 and guide rods 48. The sleeve 44 is fixedly connected to the top of the cabinet 21, the bottom of the exhaust pipe 42 is fixedly connected to the return pipe 14 through the threaded fixing of the external stud and the flange, and the exhaust pipe 42 is fixed to the outer wall of the cabinet 21. The bottom end of the second damping spring 46 is fixed to the top support rod of the chuck 47, and the top outer side of the guide rod 48 is slidably engaged with the inside of the limit tube 45.

[0033] Working principle and process of the present invention: The present invention is provided with a prefabricated chassis structure 1 at the horizontal base surface of the factory, and the top surface of the embedded frame plate 11 is flush with the height of the horizontal base surface, wherein the cable tube 12, the gas pipe 13 and the return pipe 14 arranged inside the embedded frame plate 11 are all preset pipeline structures. The gas pipe 13 is fixedly connected with the cold air pipe and the booster air pump of the external air conditioning and refrigeration equipment, and the return pipe 14 is connected with the external pipeline of the factory to discharge the mixed air after the heat exchange. The lower card plate 16 arranged on the top of the plate frame 15 is placed in an embedded manner with the upper card plate 22 arranged at the bottom of the cabinet 21, which can effectively reduce the influence of the moisture return of the horizontal base surface of the factory on the bottom of the cabinet 21. The first damping spring 326 is always in a stretched state. The second damping spring 46 is always in a compressed state. The partition chambers for placing instruments and lines inside the cabinet 21 are all provided with air guide holes, so that the air inside the cabinet 21 is connected. The heat-accumulated air inside the cabinet 21 conducts heat through the copper-aluminum heat-conducting pad 323 embedded in the column box 322, and the thermosensitive paraffin layer 324 filled in the column box 322 expands due to heat, driving the adjusting rod 325 to move downward. At this time, the cover block 328 is out of contact with the circular plate 329, and the air-conditioned cold air inside the air delivery pipe 13 enters the inside of the air supply pipe 31 through the through hole inside the circular plate 329. The air supply pipe 31 is connected with the air outlet 331 and the orifice pipe 332, and the air-conditioned cold air can be poured into the cabinet 21. The sinking of the cold air can squeeze and lift the air with heat accumulation inside. When a certain pressure is generated inside, the air squeezes and pushes the chuck 47 open, circulates and cools through the copper tube 43, and then enters the inside of the return pipe 14 through the exhaust pipe 42. When the temperature of the air inside the cabinet 21 drops, the thermosensitive paraffin layer 324 shrinks and resets, and the vertical tensile force formed by the first damping spring 326 plays a role in accelerating the reset of the cover block 328. Then, the air pressure inside the cabinet 21 is insufficient, and the second damping spring 46 drives the chuck 47 to engage with the sleeve 44 to reset to form a closed structure. Without relying on the electric control valve pipe structure, the automatic exchange and exhaust of the hot air inside the cabinet 21 is achieved.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved high and low voltage switchgear, comprising a prefabricated chassis structure (1), characterized in that: A low-voltage AC switch cabinet (2) is arranged on the top of the prefabricated chassis structure (1), an induction gas supply structure (3) is arranged on the outside of the low-voltage AC switch cabinet (2), and an exchange return structure (4) is arranged on the top of the low-voltage AC switch cabinet (2). The prefabricated chassis structure (1) comprises a pre-buried frame plate (11), a cable tube (12), a gas supply tube (13) and a return tube (14) are fixedly arranged inside the pre-buried frame plate (11), a plate frame (15) is fixedly arranged on the top of the pre-buried frame plate (11), and a lower clamping plate (16) is fixedly arranged on the top of the plate frame (15); The low-voltage AC switch cabinet (2) comprises a cabinet body (21), an upper clamping plate (22) is fixedly arranged at the bottom end of the cabinet body (21), the induction air supply structure (3) comprises an air supply pipe (31), a valve mechanism (32) is arranged at the bottom of the air supply pipe (31), one end of the air supply pipe (31) is fixedly connected to an end pipe structure (33), the valve mechanism (32) comprises a cylinder (321) fixedly arranged at the top and bottom of the bottom pipe of the air supply pipe (31), a column box (322) is fixedly arranged at the top end of the cylinder (321) arranged at the top, a copper-aluminum thermal conductive gasket (323) is fixedly arranged at the top end and the side wall of the column box (322), and the The column box (322) is filled with a thermosensitive paraffin layer (324), an adjusting rod (325) is arranged at the bottom end of the thermosensitive paraffin layer (324), a first damping spring (326) is fixedly arranged between the bottom end of the column box (322) and the side plate of the adjusting rod (325), a connecting tube (327) is fixedly arranged at the bottom end of the cylinder (321) arranged at the bottom, a cover block (328) is fixedly arranged at the bottom end of the adjusting rod (325), a circular plate (329) is fixedly arranged on the inner wall of the connecting tube (327), and the end pipe structure (33) includes an air outlet tube (331), and the outer side of the air outlet tube (331) is fixedly connected to a perforated tube (332); The exchange reflux structure (4) comprises a reflux box (41), the left and right ends of the reflux box (41) are fixedly connected to exhaust pipes (42), the inner wall plate of the reflux box (41) and one end of the exhaust pipe (42) are fixedly connected to copper tubes (43), a sleeve (44) is fixedly arranged inside the bottom end of the reflux box (41), a limit cylinder (45) and a second damping spring (46) are fixedly arranged on the inner wall of the top end of the reflux box (41), the top of the sleeve (44) is slidably arranged in a chuck (47), and a guide rod (48) is fixedly arranged on the top end of the chuck (47); The adjusting rod (325) is fixedly arranged by welding a top circular plate and a bottom column, a silicone pad is fixedly arranged between the bottom of the column of the adjusting rod (325) and the top of the cover block (328), and the bottom of the through hole arranged inside the circular plate (329) is in close contact with the silicone pad; The cylinder (321) and the column box (322) located at the top are both located inside the bottom end of the cabinet (21), and the bottom end of the connecting cylinder (327) is fixedly connected to the gas pipe (13) through the threaded fixing arrangement of the external stud and the flange; The air supply pipe (31) is fixedly engaged with the inner wall of the cabinet (21), the end pipe structure (33) is located inside the cabinet (21), and the top of the cable pipe (12) is fixedly connected to the inside of the cabinet (21); There are two exhaust pipes (42), two copper pipes (43), two stoppers (45) and two guide rods (48), and the vertical center axis of the chuck (47) is the center line of the symmetrical distribution of the exhaust pipes (42), the copper pipes (43), the stoppers (45) and the guide rods (48); The sleeve (44) is fixedly connected to the top of the cabinet (21), the bottom end of the exhaust pipe (42) is fixedly connected to the return pipe (14) through the threaded fixing of the external stud and the flange, and the exhaust pipe (42) is fixedly connected to the outer wall of the cabinet (21); The bottom end of the second damping spring (46) is fixedly arranged with the top support rod of the chuck (47), and the outer side of the top of the guide rod (48) is slidably engaged with the inside of the limiting cylinder (45).

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