Gas tank structure and gas insulation cabinet with same

Abstract

The utility model relates to a gas tank structure, which comprises a gas tank body with a gas tank rear cover plate and an inner frame arranged in the gas tank body and fixedly welded with the gas tank body, one side of an isolating switch assembly close to the gas tank rear cover plate is connected with a fixed beam, and the inner frame comprises a stand column. The outer side face, close to one side of the gas tank rear cover plate, of the stand column is attached to the inner side face of the gas tank rear cover plate and fixed to the inner side face of the gas tank rear cover plate in a welded mode, a concave groove is formed in the stand column and concaves from the outer side face of the stand column to the side away from the gas tank rear cover plate, and the part of the fixing beam is located in the concave groove. The outer side face of the fixing beam and the outer side face of the stand column are located on different planes, the outer side face of the fixing beam retracts relative to the outer side face of the stand column, and the two ends of the fixing beam are connected with the gas tank body. According to the utility model, most of the gas pressure acts on the inner frame, and the deformation of the fixed beam is small, so that the deformation of the isolating switch is reduced, the isolating switch can be normally switched on, and the occurrence rate of faults is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas insulation cabinets, in particular to a gas box structure and a gas insulation cabinet having the gas box structure. Background Art

[0002] The gas-insulated cabinet has a gas box structure, which is used in electrical equipment to improve the reliability of equipment insulation. The environmentally friendly gas-insulated cabinet is insulated by sealing all the live parts of the main circuit in the gas box and injecting gas such as SF6. However, the existing gas box structure generally includes a gas box rear cover plate, a transverse beam and a longitudinal beam for supporting the gas box. The side of the transverse beam and the longitudinal beam facing the gas box rear cover plate are welded to the gas box rear cover plate. The transverse beam and the longitudinal beam (i.e., the flat iron piece) are also welded together, and an isolating switch is arranged on the longitudinal beam. When the gas rushes into the gas box, the gas will act on the transverse beam and the longitudinal beam, especially the longitudinal beam will be subjected to greater pressure, and the pressure will cause the isolating switch to be stretched and deformed, so that the moving contact and the static contact in the isolating switch cannot be adapted to be used when they are closed, resulting in a fault. In the existing technology, when a fault occurs, a hole is cut out in the gas box, adjusted by a tool, and then the cut hole is re-sealed, which is very troublesome to repair. Summary of the invention

[0003] The utility model aims to provide a gas box structure and a gas insulation cabinet having the gas box structure, so as to solve the above technical problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An air box structure, characterized in that it includes an air box body with an air box rear cover plate, an inner frame arranged in the air box body and welded and fixed to the air box body, the inner frame divides the air box body, and an isolating switch assembly is arranged in the separation area, and a fixed beam is connected to the isolating switch assembly on the side close to the air box rear cover plate, the inner frame includes a column, and the outer side surface of the column close to the side of the air box rear cover plate is affixed to the inner side surface of the air box rear cover plate and fixed by welding, a recessed groove is formed on the column, and the recessed groove is recessed from the outer side surface of the column to the side away from the air box rear cover plate, a part of the fixed beam is located in the recessed groove, the outer side surface of the fixed beam and the outer side surface of the column are located in different planes, and the outer side surface of the fixed beam is indented relative to the outer side surface of the column, and both ends of the fixed beam are connected to the air box body.

[0006] The utility model is further arranged that the gas box body also includes a left side plate and a right side plate of the gas box, and connecting seats are arranged on the left side plate and the right side plate of the gas box, and the connecting seats are fixedly connected to the two ends of the fixed beam to fix the isolating switch.

[0007] The utility model is further configured that the air box body also includes an air box front cover plate, an air box upper cover plate and an air box lower cover plate, the column close to one side of the air box front cover plate is welded and fixed to the air box front cover plate, and the inner frame also includes a support beam located on one side of the air box upper cover plate and the air box lower cover plate.

[0008] The utility model is further arranged that the isolating switch assembly comprises a switch body and a mounting plate, wherein the mounting plates are located at two sides of the switch body and connected to the switch body, and the mounting plates are connected to the fixing beam.

[0009] The utility model is further arranged that the fixed beam is a plate-like structure or a sheet metal part or a square steel or a channel steel.

[0010] The utility model is further arranged that the horizontal distance difference between the outer side surface of the fixed beam and the outer side surface of the column is 0.5-1mm.

[0011] The utility model is further configured that the inner frame also includes reinforcing plates distributed along the columns, and the reinforcing plates, the columns and the support beams are integrally formed.

[0012] The utility model is further arranged that the connecting seat includes a first side panel fitted with the fixed beam and a second side panel connected to the left side panel and the right side panel of the air box, the first side panel and the second side panel are arranged at 90°, the first side panel and the second side panel are provided with connecting holes, and the corresponding fixed beam, the left side panel and the right side panel of the air box are also provided with docking holes.

[0013] The utility model also provides a gas insulation cabinet, characterized in that it comprises the above-mentioned gas box structure.

[0014] The beneficial effects of the utility model are as follows: the utility model changes the internal structure of the air box, specifically: the outer side surface of the fixed beam is indented relative to the outer side surface of the column, and the fixed beam is no longer fixed to the column, but is directly fixed to the air box body, while the column and the rear cover plate of the air box are still connected by welding, so that during inflation, most of the gas pressure acts on the inner frame, the deformation of the fixed beam is small, thereby reducing the deformation of the isolating switch, so that the isolating switch can be closed normally, greatly reducing the occurrence rate of failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0018] Reference numerals,

[0019] 10. Gas box body; 10a. Gas box rear cover plate; 10b. Gas box front cover plate; 10c. Gas box left side plate; 10d. Gas box right side plate; 10e. Gas box upper cover plate; 10f. Gas box lower cover plate; 20. Isolating switch assembly; 201. Switch body; 202. Mounting plate; 30. Fixed beam; 40. Inner frame; 401. Column; 4011. Concave groove; 402. Support beam; 403. Reinforced plate; 50. Connecting seat; 501. First side plate; 502. Second side plate; DETAILED DESCRIPTION

[0020] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] like Figure 1-2 As shown, the utility model is an air box structure, comprising an air box body 10 having an air box rear cover plate 10a, an inner frame 40 arranged in the air box body 10 and welded and fixed to the air box body 10, the inner frame 40 divides the air box body 10, and an isolating switch assembly 20 is arranged in the separation area, and a fixed beam 30 is connected to the isolating switch assembly 20 near the side of the air box rear cover plate 10a, and the inner frame 40 includes a column 401, and the outer side surface of the column 401 near the side of the air box rear cover plate 10a is connected to the air box rear cover plate 10a. The inner side surface of the cover plate 10a is adhered and fixed by welding, and a recessed groove 4011 is formed on the column 401, and the recessed groove 4011 is recessed from the outer side surface of the column 401 to the side away from the rear cover plate 10a of the air box, and part of the fixed beam 30 is located in the recessed groove 401, and the outer side surface of the fixed beam 30 and the outer side surface of the column 401 are located in different planes, and the outer side surface of the fixed beam 30 is indented relative to the outer side surface of the column 401, and both ends of the fixed beam 30 are connected to the air box body 10.

[0022] The air box body 10 also includes an air box left side plate 10c and an air box right side plate 10d. A connecting seat 50 is provided on the air box left side plate 10c and the air box right side plate 10d. The connecting seat 50 is fixedly connected to both ends of the fixed beam 30 to fix the isolating switch.

[0023] The air box body 10 also includes an air box front cover plate 10b, an air box upper cover plate 10e and an air box lower cover plate 10f. The column 401 close to the side of the air box front cover plate 10b is welded and fixed to the air box front cover plate 10b. The inner frame 40 also includes a support beam 402 located on one side of the air box upper cover plate 10e and the air box lower cover plate 10f.

[0024] The isolating switch assembly 20 includes a switch body 201 and a mounting plate 202 . The mounting plate 202 is located at two sides of the switch body 201 and connected to the switch body 201 . The mounting plate 202 is connected to the fixing beam 30 .

[0025] like Figure 2 As shown, the fixed beam 30 in the present invention is a plate-like structure or a sheet metal part or a square steel or a channel steel. The number of fixed beams 30 in the present invention is 2, and the number of recessed grooves 4011 on the same column 401 is 2. For example, when a plate-like structure is adopted, the number of plate-like structures is 2. Figure 2 The plate-like structures and sheet metal structures shown are for illustration purposes only.

[0026] The horizontal distance difference D between the outer side surface of the fixing beam 30 and the outer side surface of the column 401 is 0.5-1 mm.

[0027] The inner frame 40 further includes reinforcing plates distributed along the columns 401 , and the reinforcing plates, the columns 401 and the support beams 402 are integrally formed.

[0028] The connecting seat 50 includes a first side plate 501 that is in contact with the fixed beam 30 and a second side plate 502 that is connected to the left side plate 10c and the right side plate 10d of the air box. The first side plate 501 and the second side plate 502 are arranged at 90°. The first side plate 501 and the second side plate 502 are provided with connecting holes, and the corresponding fixed beam 30, the left side plate 10c and the right side plate 10d of the air box are also provided with docking holes.

[0029] The utility model also provides a gas insulation cabinet, comprising the above-mentioned gas box structure.

[0030] The utility model sets up a control group and an experimental group, each group is provided with 1000 gas-insulated cabinets for operation test, the test duration is six months, the control group is the structure adopted in the prior art, the experimental group is the scheme adopted in the utility model, the closing conditions of the moving contacts and the static contacts of the isolating switch are statistically analyzed, the number of failures in the control group is 82; the number of failures in the experimental group is 5, and the failure rates between the two are quite different, so the utility model can greatly reduce the failure rate when the moving contacts and the static contacts of the isolating switch are closed.

[0031] The utility model changes the internal structure of the gas box, specifically: the outer side surface of the fixed beam 30 is set to be indented relative to the outer side surface of the column 401, and the fixed beam 30 is no longer fixed to the column 401, but is directly fixed to the gas box body 10, while the column 401 and the gas box rear cover plate 10a are still connected by welding. In this way, when inflating, most of the gas pressure acts on the inner frame 40, the deformation of the fixed beam 30 is small, thereby reducing the deformation of the isolating switch, so that the isolating switch can be closed normally, and the occurrence rate of failure is greatly reduced.

[0032] The utility model changes the internal structure of the gas box. Specifically, the outer side surface of the fixed beam is indented relative to the outer side surface of the column. At the same time, the fixed beam is no longer fixed to the column, but is directly fixed to the gas box body, while the column and the rear cover plate of the gas box are still connected by welding. In this way, during inflation, most of the gas pressure acts on the inner frame, the deformation of the fixed beam is small, thereby reducing the deformation of the isolating switch, so that the isolating switch can be closed normally, and the occurrence rate of failure is greatly reduced.

[0033] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0034] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An air box structure, characterized in that: The invention comprises an air box body having an air box rear cover plate, and an inner frame arranged in the air box body and welded and fixed to the air box body, wherein the inner frame divides the air box body, and an isolating switch assembly is arranged in the separation area, and a fixed beam is connected to the side of the isolating switch assembly close to the air box rear cover plate, and the inner frame comprises a column, and the outer side surface of the column close to the side of the air box rear cover plate is affixed to the inner side surface of the air box rear cover plate and fixed by welding, and a recessed groove is formed on the column, and the recessed groove is recessed from the outer side surface of the column to the side away from the air box rear cover plate, and part of the fixed beam is located in the recessed groove, and the outer side surface of the fixed beam and the outer side surface of the column are located in different planes, and the outer side surface of the fixed beam is indented relative to the outer side surface of the column, and the two ends of the fixed beam are connected to the air box body.

2. An air box structure according to claim 1, characterized in that: The gas box body also includes a left side plate and a right side plate of the gas box. The left side plate and the right side plate of the gas box are provided with connecting seats, and the connecting seats are fixedly connected to the two ends of the fixed beam to fix the isolating switch.

3. An air box structure according to claim 1, characterized in that: The air box body also includes an air box front cover plate, an air box upper cover plate and an air box lower cover plate. The column close to the side of the air box front cover plate is welded and fixed to the air box front cover plate. The inner frame also includes a support beam located on one side of the air box upper cover plate and the air box lower cover plate.

4. An air box structure according to claim 1, characterized in that: The isolating switch assembly comprises a switch body and a mounting plate, wherein the mounting plates are located at two sides of the switch body and connected to the switch body, and the mounting plates are connected to the fixing beam.

5. An air box structure according to claim 1, characterized in that: The fixed beam is a plate-shaped structure or a sheet metal part or a square steel or a channel steel.

6. An air box structure according to claim 1, characterized in that: The horizontal distance difference between the outer side surface of the fixed beam and the outer side surface of the column is 0.5-1mm.

7. An air box structure according to claim 1 or 3, characterized in that: The inner frame further comprises reinforcing plates distributed along the columns, and the reinforcing plates, the columns and the supporting beams are integrally formed.

8. An air box structure as claimed in claim 2, characterized in that: The connecting seat includes a first side plate that is in contact with the fixed beam and a second side plate that is connected to the left side plate and the right side plate of the air box. The first side plate and the second side plate are arranged at 90°. The first side plate and the second side plate are provided with connecting holes, and the corresponding fixed beam, the left side plate and the right side plate of the air box are also provided with docking holes.

9. A gas insulated cabinet, characterized in that: Comprising the air box structure as described in any one of claims 1-8.

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