Standardized environment-friendly gas insulated switchgear

Abstract

The utility model discloses a standardized environment-friendly gas insulated switchgear, which comprises a switch cabinet, a plurality of mounting holes are arranged in the switch cabinet, and sealing devices are fixedly arranged in the mounting holes, and is characterized in that each sealing device comprises a box body, an inner cavity is arranged in the box body, a top baffle plate is arranged on the top side in the inner cavity, and a bottom baffle plate is arranged on the bottom side in the inner cavity. A top baffle is arranged in the inner cavity and divides the inner cavity into two spaces, two communicating cavities are formed in the top of the inner cavity, a transverse plate is arranged in the box body, a plurality of threading holes are formed in the transverse plate, and the inner cavity is soaked with gearbox oil or other insulating liquid media. The inner wall of the bottom of the inner cavity is provided with a threading hole, and is completely submerged in the space between the top baffle plate and the inner wall of the bottom of the inner cavity, so that after an external line passes through the threading hole and the inner cavity, the external space and the interior of the switch cabinet can be effectively isolated, and the insulation gas in the switch cabinet is prevented from being communicated with the air in the external space.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly gas insulated switchgear, in particular to a standardized environmentally friendly gas insulated switchgear. Background Art

[0002] The standardized environmentally friendly gas insulated switchgear is a relatively common prior art in the field of switchgear. A main control switch is arranged in the switch cabinet, and an external line is connected from the outside of the switch cabinet to the inside. In order to avoid safety accidents inside the switch cabinet, the prior art uses environmentally friendly insulating gas filled therein to achieve the internal insulation function. Since there is insulating gas inside the switch cabinet and there are devices for balancing air pressure and replenishing insulating gas, the air pressure inside the switch cabinet can be maintained in balance with the atmospheric pressure in the external space. However, when the external line is connected to the inside of the switch cabinet, the sealing performance between the external line and the switch cabinet is poor, and a lot of research has been carried out on this. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a standardized environmentally friendly gas insulated switchgear, which can solve the problems in the above-mentioned prior art.

[0004] The utility model is realized by the following technical solutions: A standardized environmentally friendly gas insulated switchgear of the utility model includes a switch cabinet. A plurality of mounting holes are arranged in the switch cabinet, and a sealing device is fixedly arranged in the mounting holes. It is characterized in that the sealing device includes a box body. An inner cavity is arranged in the box body. A top baffle is arranged on the top side inside the inner cavity. The top baffle divides the inner cavity into two spaces. Two communication cavities are arranged on the top of the inner cavity. A cross plate is arranged in the box body. A plurality of wire passing holes are arranged in the cross plate. A vertical baffle is arranged at the bottom of the cross plate. The inner cavity runs through the box body, and the vertical baffle closes the side surface of the inner cavity.

[0005] In a further technical solution, an internally threaded oil injection hole is arranged in the box body, and an externally threaded plug is arranged in the internally threaded oil injection hole.

[0006] In a further technical solution, a sealing gasket is further arranged on one side of the vertical baffle.

[0007] In a further technical solution, a cover plate is further arranged on one side of the vertical baffle. A pressing plate is arranged on one side of the cover plate, and the pressing plate abuts against one side of the sealing gasket.

[0008] In a further technical solution, a horizontal slot and an abutting groove are arranged on the inner wall of the communication cavity. The cross plate is inserted into the horizontal slot and the abutting groove. A matching groove is further arranged on the inner wall of the inner cavity. The matching groove is communicated with the horizontal slot, and the vertical baffle is abutted and clamped in the matching groove.

[0009] According to a further technical solution, a vertical slot is provided in the box body, the vertical slot is communicated with the matching slot, the sealing pad is inserted into the vertical slot, and the sealing pad abuts against the vertical baffle.

[0010] The beneficial effects of the utility model are as follows: 1. The inner cavity is impregnated with transmission oil or other insulating liquid medium, and is completely submerged in the space between the top baffle and the inner wall of the bottom of the inner cavity. After the external wire passes through the threading hole and the inner cavity, the external space and the interior of the switch cabinet can be effectively isolated, thereby preventing the insulating gas inside the switch cabinet from communicating with the air in the external space.

[0011] Second, the composite structure consisting of a cover plate, a pressure plate, a vertical baffle plate, a horizontal plate and a sealing pad can be used to seal the opening areas on both sides of the inner cavity, and the structure consisting of the vertical baffle plate, the threading hole and the horizontal plate is convenient for the insertion of external wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of a standardized environmentally friendly gas-insulated switchgear of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the rear structure of the device;

[0015] Figure 3 is a schematic diagram of the structure of the sealing device;

[0016] Figure 4 for Figure 3 A schematic diagram of the cross-section structure of the middle sealing device;

[0017] Figure 5 for Figure 3 A schematic diagram of the structure of each component of the sealing device;

[0018] Figure 6 for Figure 5 Schematic diagram at A in the middle;

[0019] Figure 7 for Figure 5 Schematic diagram at B in the middle;

[0020] In the figure, the box body 11, the switch cabinet 12, the mounting hole 13, the internal thread oil filling hole 18, the external thread plug 19, the inner cavity 21, the vertical baffle 22, the cover plate 23, the pressure plate 24, the threading hole 25, the horizontal plate 26, the sealing gasket 27, the vertical slot 31, the horizontal slot 32, the abutting slot 33, the top baffle 34, the matching slot 35, and the connecting cavity 36. DETAILED DESCRIPTION

[0021] like Figures 1-7 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship are consistent. The utility model is a standardized environmentally friendly gas-insulated switchgear, including a switch cabinet 12. A plurality of mounting holes 13 are arranged in the switch cabinet 12. A sealing device is fixedly arranged in the mounting hole 13. The external wire passes through the sealing device and then extends into the switch cabinet 12.

[0022] Advantageously, the sealing device comprises a box body 11, an inner cavity 21 is arranged in the box body 11, a top baffle 34 is arranged on the top side of the inner cavity 21, the top baffle 34 divides the inner cavity 21 into two spaces, two connecting cavities 36 are arranged on the top of the inner cavity 21, when the sealing device is installed in the mounting hole 13, the box body 11 needs to be fixed in the mounting hole 13, and the connecting cavities 36 on both sides are respectively located on the inner side and the outer side of the switch cabinet 12, the switch cabinet 12 separates the connecting cavities 36 on both sides, the box body 11 is impregnated with gearbox oil or other insulating liquid medium, the gearbox oil is immersed in one side of the top baffle 34, the space between the top baffle 34 and the bottom of the inner cavity 21 is filled with gearbox oil or other insulating liquid medium, the function of the gearbox oil or other insulating liquid medium sealing the channel is realized, the external line is introduced from the connecting cavity 36 located on the outer side of the switch cabinet 12, and then passes through the space between the top baffle 34 and the inner cavity 21, and is led out from the connecting cavity 36 located in the switch cabinet 12.

[0023] Advantageously, an internally threaded oil filling hole 18 is provided in the box body 11 , and an externally threaded cock 19 is provided in the internally threaded oil filling hole 18 for filling the box body 11 with transmission oil or other insulating liquid media.

[0024] Advantageously, a transverse plate 26 is provided in the box body 11, and a plurality of threading holes 25 are provided in the transverse plate 26. The threading holes 25 are used for threading. When threading, a sealing ring can be selected and arranged in the threading holes 25 according to actual conditions. A vertical baffle 22 is provided at the bottom of the transverse plate 26. The inner cavity 21 is arranged through the box body 11, and the vertical baffle 22 closes the side of the inner cavity 21.

[0025] Advantageously, a sealing pad 27 is provided on one side of the vertical baffle 22, and the sealing pad 27 plays a sealing role.

[0026] Advantageously, a cover plate 23 is further provided on one side of the vertical baffle 22. After the cover plate 23 is fixed to the box body 11 by fasteners, the pressing plate 24 on one side of the cover plate 23 abuts against the sealing gasket 27, pressing the sealing gasket 27 against one side of the vertical baffle 22 to prevent the leakage of the transmission oil or other insulating liquid media in the box body 11.

[0027] Advantageously, a horizontal slot 32 and an abutting slot 33 are provided on the inner wall of the communication cavity 36. The transverse plate 26 is inserted into the horizontal slot 32 and the abutting slot 33. A mating slot 35 is further provided on the inner wall of the inner cavity 21. The mating slot 35 communicates with the horizontal slot 32, and the vertical baffle 22 is abutted and clamped in the mating slot 35.

[0028] Advantageously, a vertical slot 31 is provided in the box body 11. The vertical slot 31 communicates with the mating slot 35. The sealing gasket 27 is inserted into the vertical slot 31 and is arranged to abut against the vertical baffle 22.

[0029] Advantageously, after the cover plate 23 is installed and fixed to the box body 11, the pressing plate 24 is snapped into the interior of the box body 11 and is arranged to abut against the sealing gasket 27.

[0030] By installing the box body 11 in the switch cabinet 12 and making the wire passing holes 25 on both sides be located outside and inside the switch cabinet 12 respectively, with the inner cavity 21 impregnated with transmission oil or other insulating liquid media and completely submerging the space between the top baffle 34 and the inner bottom wall of the inner cavity 21, after the external wire passes through the wire passing hole 25 and the inner cavity 21, it can effectively isolate the external space from the interior of the switch cabinet 12, avoiding the communication between the insulating gas inside the switch cabinet 12 and the air in the external space.

[0031] When replenishing the transmission oil or other insulating liquid media, it is realized by replenishing through the internal thread oil injection hole 18 and the external thread plug 19.

[0032] When installing the sealing device, the box body 11 is connected and fixed to the switch cabinet 12 by pre-welding or other fixing methods to avoid poor sealing performance after the box body 11 is connected to the switch cabinet 12.

[0033] Thereafter, an external wire is installed in the wire threading hole 25, and then the cross plate 26 is slid and clamped into the horizontal slot 32 and the abutting slot 33, and the vertical baffle 22 is abutted against the mating slot 35; the sealing gasket 27 is inserted into the vertical slot 31 from top to bottom, and the sealing gasket 27 is abutted against the vertical baffle 22; then the cover plate 23 is fixed to one side of the box body 11, and the pressing plate 24 is abutted against one side of the sealing gasket 27 to improve the sealing effect between the sealing gasket 27 and the vertical baffle 22 and prevent the leakage of gearbox oil or other insulating liquid media; thereafter, after the external thread plug 19 is unscrewed, supplementary gearbox oil or other insulating liquid media is injected into the internal thread oil injection hole 18 into the box body 11, and the gearbox oil or other insulating liquid media submerges one side of the top baffle 34.

[0034] Since a sealing ring can also be provided between the external wire and the wire threading hole 25, the sealing performance of the device can be further improved, and the gearbox oil or other insulating liquid media in the box body 11 can be prevented from overflowing the device under the action of air pressure.

[0035] The internal thread oil injection hole 18 and the external thread plug 19 are in threaded fit connection.

[0036] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model; therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A standardized environmentally friendly gas-insulated switchgear, comprising a switch cabinet (12), wherein a plurality of mounting holes (13) are arranged in the switch cabinet (12), and a sealing device is fixedly arranged in the mounting hole (13), characterized in that: The sealing device comprises a box body (11), wherein an inner cavity (21) is arranged in the box body (11), a top baffle (34) is arranged on the top side of the inner cavity (21), the top baffle (34) divides the inner cavity (21) into two spaces, two connecting cavities (36) are arranged on the top of the inner cavity (21), a transverse plate (26) is arranged in the box body (11), a plurality of threading holes (25) are arranged in the transverse plate (26), a vertical baffle (22) is arranged at the bottom of the transverse plate (26), the inner cavity (21) is arranged through the box body (11), and the vertical baffle (22) seals the side of the inner cavity (21).

2. A standardized environmentally friendly gas insulated switchgear according to claim 1, characterized in that: An internally threaded oil injection hole (18) is provided in the box body (11), and an externally threaded cock (19) is provided in the internally threaded oil injection hole (18).

3. A standardized environmentally friendly gas-insulated switchgear according to claim 1 or 2, characterized in that: A sealing pad (27) is also provided on one side of the vertical baffle (22).

4. A standardized environmentally friendly gas insulated switchgear according to claim 3, characterized in that: A cover plate (23) is also provided on one side of the vertical baffle plate (22), and a pressure plate (24) is provided on one side of the cover plate (23), wherein the pressure plate (24) abuts against one side of the sealing pad plate (27).

5. A standardized environmentally friendly gas insulated switchgear according to claim 4, characterized in that: The inner wall of the connecting cavity (36) is provided with a horizontal slot (32) and an abutting slot (33), the transverse plate (26) is inserted into the horizontal slot (32) and the abutting slot (33), the inner wall of the inner cavity (21) is also provided with a matching slot (35), the matching slot (35) is connected with the horizontal slot (32), and the vertical baffle (22) is abutted and snapped into the matching slot (35).

6. A standardized environmentally friendly gas-insulated switchgear according to claim 5, characterized in that: A vertical slot (31) is provided in the box body (11), the vertical slot (31) is communicated with the matching slot (35), the sealing pad (27) is inserted into the vertical slot (31), and the sealing pad (27) abuts against the vertical baffle (22).

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