CN213601776U

CN213601776U - Sealed coupling assembly of totally closed control chamber

Info

Publication number: CN213601776U
Application number: CN202022748066.2U
Authority: CN
Inventors: 郑佳; 朱佩龙; 欧张力; 蒋孝海; 倪永杰
Original assignee: Ningbo Naisen Electrical Technology Co ltd
Current assignee: Ningbo Naisen Electrical Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-02
Anticipated expiration: 2030-11-24

Abstract

The application discloses a sealed coupling component of a totally-enclosed operating chamber, which comprises an operating part, a perforation external member and a driving shaft; the driving shaft is rotatably arranged on the circuit breaker operating mechanism or the disconnecting switch operating mechanism, and the rotation of the driving shaft is suitable for realizing the functional actions of the circuit breaker operating mechanism and the disconnecting switch operating mechanism respectively; the operation part is arranged in the perforation external member in a sealing and rotating mode, extends into the box body and is suitable for being linked with the driving shaft to rotate; the slider interlocking mechanism comprises a front linkage position arranged at the rear end of the operating piece, a rear linkage position arranged at the front end of the driving shaft and an intermediate disc arranged between the front linkage position and the rear linkage position. The device has the advantages of good sealing performance, convenient assembly and reliable linkage.

Description

Sealed coupling assembly of totally closed control chamber

Technical Field

The application relates to the field of electrical equipment, in particular to a high-voltage switch cabinet.

Background

Offshore wind power is offshore wind power generation, and is a novel power plant for generating power by utilizing offshore wind resources, under the background that offshore wind power in the world begins to enter a large-scale development stage, the sequence curtain is also opened in the construction of offshore wind power plants in China, in the aspect of offshore wind power, the development of wind energy resources on the sea in the east coast of China can reach about 7.5 hundred million kilowatts, so that the offshore wind power generation system has huge resource potential and good development and utilization market conditions. In the field of offshore wind power, a high-voltage switch cabinet is also a crucial ring and is used for switching on and off, controlling and protecting power generation, power transmission, power distribution, electric energy conversion and consumption in an offshore wind power system. Because the environment of the offshore wind power field is severe, the high-voltage switch cabinet adopts an inflatable cabinet structure. The gas-filled cabinet is short for indoor AC high-voltage gas insulated metal-enclosed switchgear, and is a new generation of switchgear, the main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, and the primary electrified loop is sealed in a sulfur hexafluoride gas compartment, so that the gas-filled cabinet is compact and expandable, and is suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking and the like, and can provide satisfactory technical schemes for various application occasions (particularly places with severe environment) and different user requirements.

At present, an inflatable cabinet generally comprises an air chamber, an operation chamber, a cable chamber and an instrument chamber, sulfur hexafluoride gas is generally filled in the air chamber to serve as insulating gas, a circuit breaker and a disconnecting switch are installed in the air chamber, and a circuit breaker operation mechanism and a disconnecting switch operation mechanism are installed in the operation chamber. The offshore wind farm environment is abominable, mainly reflects in high salinity, high humidity and high temperature difference round the clock, can cause the corruption to electrical element, operating device part on the one hand, and on the other hand leads to the structure to take place to warp or misplace easily, all can influence the normal use of aerifing the cabinet. Under the environment with high salinity, high humidity and high day and night temperature difference, the air chamber has strict air tightness requirement, so the influence of severe environment is basically avoided; the cable accessories, instruments and other elements in the cable chamber and the instrument chamber can adopt products with high protection level so as to be suitable for severe environment; the protection level of the operation room can only reach IP4X generally, and the operation room is easily influenced by the environment, and the current common solution is to install a cabinet door which can be closed on the operation room. However, the door of the operation chamber still needs to be opened when the circuit breaker operation mechanism and the disconnecting switch operation mechanism need to be operated, and air with high salinity and high humidity still enters the operation chamber, so that the circuit breaker operation mechanism and the disconnecting switch operation mechanism still can be corroded in the past.

Therefore, how to further improve the existing inflatable cabinet to adapt to the severe environment of offshore wind power is a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

An object of this application is to provide a leakproofness is good, convenient assembling, the reliable sealed coupling subassembly of totally closed control chamber of linkage.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: the utility model provides a totally closed control chamber's sealed coupling subassembly which characterized in that: comprises an operating member, a perforation external member and a driving shaft; the driving shaft is rotatably arranged on the circuit breaker operating mechanism or the disconnecting switch operating mechanism, and the rotation of the driving shaft is suitable for realizing the functional actions of the circuit breaker operating mechanism and the disconnecting switch operating mechanism respectively; the operation part is arranged in the perforation external member in a sealing and rotating mode, extends into the box body and is suitable for being linked with the driving shaft to rotate;

the sliding block interlocking mechanism comprises a front linkage position, a rear linkage position and a middle disc, wherein the front linkage position is arranged at the rear end of the operating piece, the rear linkage position is arranged at the front end of the driving shaft, the middle disc is arranged between the front linkage position and the rear linkage position, the two sides of the middle disc are respectively provided with middle linkage positions which are perpendicular to each other, and the middle linkage positions at the two sides are respectively in sliding connection with the front linkage position and the rear linkage position.

Preferably, the perforation external member includes a T-shaped threaded sleeve and a gland nut, the T-shaped threaded sleeve includes a sealing ring and a threaded pipe, the T-shaped threaded sleeve is suitable for passing through the operation hole, the rear end of the sealing ring is suitable for abutting against the front side face of the front sealing plate, an end sealing ring is arranged between the sealing ring and the front sealing plate, the operation member is rotatably arranged on the inner side of the threaded pipe, a radial sealing ring is arranged between the operation member and the threaded pipe, the gland nut is in threaded connection with the outer side of the threaded pipe, and the gland nut is suitable for abutting against the rear side face of the front sealing plate and fixing the perforation external member on the front sealing plate. The structure can simply and reliably realize the sealing between the perforation external member and the front closing plate and the sealing between the perforation external member and the operation piece; and the threaded connection mode of the T-shaped threaded sleeve and the compression nut has the advantages of convenience in installation and reliability in fixation.

As an improvement, the front end of the driving shaft is also fixedly provided with a limiting sleeve, the inner diameters of the T-shaped threaded sleeve and the limiting sleeve are slightly larger than the outer diameter of the intermediate disc, and the intermediate disc is positioned in the T-shaped threaded sleeve and/or the limiting sleeve. The T-shaped threaded sleeve and the limiting sleeve both have a limiting effect on the intermediate disc, so that the intermediate sleeve can be reliably and movably arranged between the operating piece and the driving shaft.

Preferably, a first sealing groove is formed in the rear side of the sealing ring, and the end sealing ring is mounted in the first sealing groove; a second sealing groove is formed in the outer side of the operating piece, and the radial sealing ring is installed in the second sealing groove.

As an improvement, operation notches are formed in the peripheral sides of the T-shaped threaded sleeve and the compression nut, and the operation notches are suitable for operating the T-shaped threaded sleeve and the compression nut by using a spanner. Two wrenches are conveniently used to respectively rotate or fix the T-shaped threaded sleeve and the compression nut, so that the perforated sleeve is more firmly fixed while the assembly is convenient.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the arrangement of the sealing coupling component can ensure the sealing performance of the box body and realize the normal operation of the circuit breaker operating mechanism and the isolating switch operating mechanism. And when operating circuit breaker operating device and isolator operating device, also need not to open the box, make circuit breaker operating device and isolator operating device be in closed isolation state all the time, avoided current sealed control room to need the loaded down with trivial details of briefly opening and the risk of getting into the air of high salinity, high humidity when the operation.

(2) In addition, since the circuit breaker operating mechanism and the disconnector operating mechanism are installed in the case, the driving shaft is naturally installed on the circuit breaker operating mechanism or the disconnector operating mechanism, and the operating member and the penetration assembly are installed on the front sealing plate. Therefore, during assembly, the front sealing plate is required to cover the front side of the side plate frame, the operating part is aligned with the driving shaft, and synchronous rotation of the operating part and the driving shaft is realized. Because machining error and assembly error's existence, the operating part is with great degree of difficulty with concentric alignment drive shaft during shrouding before the assembly, consequently this scheme has set up slider interlocking device between operating part and drive shaft, has set up the slider shaft coupling at operating part and drive shaft in other words for the assembly error between compensation operating part and the drive shaft guarantees that the operating part can reliable and stable drive shaft rotate. Besides, the slider interlocking mechanism can compensate possible dislocation and deformation of the operating part and the driving shaft (due to the increase of the operation times and the influence of severe environment, the operating part and the driving shaft can be dislocated or deformed more or less) in addition to the compensation of the assembly error, and the linkage reliability of the operating part and the driving shaft is ensured.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment according to the present application;

FIG. 2 is an exploded view of a preferred embodiment according to the present application;

FIG. 3 is a perspective view of the seal coupling assembly mounted to the front closure plate in accordance with a preferred embodiment of the present application;

FIG. 4 is a perspective view of the sealed coupling assembly in an open/close operating position in accordance with a preferred embodiment of the present application;

FIG. 5 is a perspective view of the sealed coupling assembly in a stored energy operating position in accordance with a preferred embodiment of the present application;

FIG. 6 is an exploded view of FIG. 4 in accordance with a preferred embodiment of the present application;

FIG. 7 is an exploded view of FIG. 5 in accordance with a preferred embodiment of the present application;

FIG. 8 is a half sectional view of FIG. 4 in accordance with a preferred embodiment of the present application;

FIG. 9 is a half sectional view of FIG. 5 in accordance with a preferred embodiment of the present application;

FIG. 10 is a schematic perspective view of a housing according to a preferred embodiment of the present application;

FIG. 11 is an exploded view of the housing in accordance with a preferred embodiment of the present application;

FIG. 12 is a perspective view of a side panel frame according to a preferred embodiment of the present application;

FIG. 13 is a perspective view of a preferred embodiment according to the present application when installed in a plenum.

In the figure: 100. a totally-enclosed operating chamber; 200. an air chamber; 201. a circuit breaker; 202. an isolating switch;

1. a box body; 2. a circuit breaker operating mechanism; 3. an isolator operating mechanism; 4. a sealed coupling assembly; 5. an interlock assembly; 6. a circuit breaker panel; 7. an isolator panel;

11. a side plate frame; 12. a front closing plate; 13. a front cover plate; 14. a mounting cavity; 15. a shield ring; 16. a rectangular gasket; 17. a fastener; 111. an upper side plate; 112. a lower side plate; 113. a left side plate; 114. a right side plate; 115. a rectangular mounting ring; 116. an upper wire outlet hole; 117. a lower outlet hole; 118. threading the wire sleeve; 1111. an upper sealing plate; 1121. a lower sealing plate; 1131. a left seal plate; 1141. a right sealing plate; 121. an operation hole; 122. a transparent window; 123. positioning a plate; 131. a first notch; 132. a second notch; 133. an observation hole; 134. a support plate; 21. an opening and closing operation position; 22. an energy storage operating position; 31. a ground operation site; 32. a disconnection operation position; 33. indicating an operation position;

41. an operating member; 42. a perforation kit; 43. a drive shaft; 44. an intermediate tray; 45. a limiting sleeve; 421. a T-shaped threaded sleeve; 422. a compression nut; 423. an end seal ring; 424. a radial seal ring; 425. operating the incision; 4211. a seal ring; 4212. a threaded pipe; 4213. a first seal groove; 4214. a second seal groove; 411. a front linkage position; 431. a rear linkage position; 441. and the middle linkage position.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present embodiment is suitable for being applied to a totally enclosed operating room, so the present embodiment will be described more clearly and more fully below with reference to the specific structure of the totally enclosed operating room.

As shown in fig. 1 to 13, a totally enclosed operating room 100 of a preferred embodiment of the present application includes a case 1, and a circuit breaker operating mechanism 2 and a disconnector operating mechanism 3 provided in the case 1; the box body 1 comprises a side plate frame 11 and a front sealing plate 12, wherein the side plate frame 11 is suitable for being hermetically fixed at the front side of the air chamber 200 (in the embodiment, the back plate of the box body 1 is shared with the air chamber 200), and the front sealing plate 12 is hermetically sealed at the front side of the side plate frame 11; a plurality of operation positions are arranged on the circuit breaker operating mechanism 2 and the isolating switch operating mechanism 3, a plurality of operation holes 121 corresponding to the operation positions are formed in the front sealing plate 12, and a sealing coupling component 4 is arranged in each operation hole 121.

In this embodiment, the operation positions on the circuit breaker operating mechanism 2 include an opening and closing operation position 21 and an energy storage operation position 22, the operation element 41 on the opening and closing operation position 21 is an opening and closing knob, and the operation element 41 on the energy storage operation position 22 is an energy storage shaft sleeve; the operation positions on the disconnecting switch operation mechanism 3 comprise a grounding operation position 31, an opening operation position 32 and an indication operation position 33, wherein the operation piece 41 on the grounding operation position 31 is a grounding shaft sleeve, the operation piece 41 on the opening operation position 32 is an opening shaft sleeve, and the operation piece 41 on the indication operation position 33 is an indication plate. The above-mentioned various operating positions are conventional arrangements of the gas-filled cabinet, without excluding the presence of other operating positions. It should be noted that the specific structures and operating principles of the circuit breaker operating mechanism 2 and the disconnector operating mechanism 3 are the prior art, and therefore, they are not specifically described in this embodiment, but this does not prevent the specific structures and operating principles from becoming the technical features implicit in this application.

As shown in fig. 4 to 9, the sealing coupling assembly 4 on the switching-on/off operation position 21 and the sealing coupling assembly 4 on the energy storage operation position 22 are respectively shown, and each of the two sealing coupling assemblies 4 comprises an operation member 41, a perforation sleeve 42 and a driving shaft 43; the driving shaft 43 is rotatably arranged on the circuit breaker operating mechanism 2 or the disconnecting switch operating mechanism 3, and the driving shaft 43 is rotatably suitable for realizing the functional actions of the circuit breaker operating mechanism 2 and the disconnecting switch operating mechanism 3 respectively; the perforation sleeve 42 passes through the operation hole 121 and is hermetically fixed on the front sealing plate 12, the operation member 41 is hermetically and rotatably arranged in the perforation sleeve 42, and the operation member 41 extends into the box body 1 and is suitable for being linked with the rotation of the driving shaft 43.

The perforation kit 42 comprises a T-shaped threaded sleeve 421 and a compression nut 422, the T-shaped threaded sleeve 421 comprises a sealing ring 4211 and a threaded pipe 4212, the T-shaped threaded sleeve 421 is suitable for penetrating through the operation hole 121, the rear end of the sealing ring 4211 is suitable for abutting against the front side face of the front sealing plate 12, an end sealing ring 423 is arranged between the sealing ring 4211 and the front sealing plate 12, the operation part 41 is rotatably arranged on the inner side of the threaded pipe 4212, a radial sealing ring 424 is arranged between the operation part 41 and the threaded pipe 4212, the compression nut 422 is in threaded connection with the outer side of the threaded pipe 4212, and the compression nut 422 is suitable for abutting against the rear side face of the front sealing. In this embodiment, a first sealing groove 4213 is formed in the rear side of the sealing ring 4211, and the end sealing ring 423 is installed in the first sealing groove 4213; a second seal groove 4214 is formed outside the operating element 41, and the radial seal ring 424 is installed in the second seal groove 4214. For convenient assembly, operation incisions 425 are formed in the peripheral sides of the T-shaped threaded sleeve 421 and the compression nut 422, and the operation incisions 425 facilitate the use of a wrench to rotate or fix the T-shaped threaded sleeve 421 and the compression nut 422.

In order to compensate machining and assembly errors and offset and deformation caused by use, a slider interlocking mechanism is arranged between the operating element 41 and the driving shaft 43, the slider interlocking mechanism comprises a front linkage position 411 arranged at the rear end of the operating element 41, a rear linkage position 431 arranged at the front end of the driving shaft 43 and an intermediate disc 44 arranged between the front linkage position 411 and the rear linkage position 431, two sides of the intermediate disc 44 are respectively provided with an intermediate linkage position 441 which are perpendicular to each other, and the intermediate linkage positions 441 at the two sides are respectively connected with the front linkage position 411 and the rear linkage position 431 in a sliding manner. The slide block interlocking mechanism is essentially a slide block coupling, and can make two shafts which are not on the same axis or have larger folding angle or larger axial movement at the same angular speed to continuously rotate at the same angular speed by utilizing the structural characteristics of the slide block interlocking mechanism, and reliably transmit torque and movement. The linkage position is a groove or a bump, and the following specific setting of the linkage position is exemplified: as shown in fig. 6, the front linkage position 411 of the sealed coupling component 4 on the opening and closing operation position 21 is a convex block, the two middle linkage positions 441 are both grooves, and the rear linkage position 431 is a groove; the front linkage position 411 of the sealed coupling component 4 of the energy storage operation position 22 is a convex block, the middle linkage position 441 on the front side is a concave groove, the middle linkage position 441 on the rear side is a convex block, and the rear linkage position 431 is a convex block. As shown in fig. 9, for reliable installation of the intermediate disk 44, a limiting sleeve 45 is fixedly arranged at the front end of the driving shaft 43, the inner diameters of the limiting sleeve 45 are slightly larger than the outer diameter of the intermediate disk 44, and the intermediate disk 44 is positioned in the limiting sleeve 45; as shown in fig. 8, the T-shaped thread insert 421 may also be used to limit the intermediate disk 44, and at this time, the inner diameter of the T-shaped thread insert 421 is slightly larger than the outer diameter of the intermediate disk 44, and the intermediate disk 44 is located in the T-shaped thread insert 421.

Further, the front side of the front closing plate 12 is further provided with a front cover plate 13, an installation cavity 14 is formed between the front closing plate 12 and the front cover plate 13, an interlocking component 5 is arranged in the installation cavity 14, the interlocking component 5 is arranged between a plurality of operation positions on the circuit breaker operation mechanism 2 and the disconnecting switch operation mechanism 3 in a linkage mode, and the interlocking component 5 is suitable for achieving interlocking between the plurality of operation positions. It should be noted that the specific structure and operation principle of the interlocking component 5 are the prior art, and therefore are not specifically described in the present embodiment, but this does not prevent the specific structure and operation principle from becoming the technical features implicit in the present application. Furthermore, the interlocking component 5 can also extend into the box body 1 or out of the box body 1 for further interlocking.

As supplementary setting, still fixedly in the installation cavity 14 be provided with circuit breaker panel 6 and isolator panel 7, interlock subassembly 5 sets up in circuit breaker panel 6 and isolator panel 7 rear, has seted up first breach 131 and second breach 132 on the apron 13, and circuit breaker panel 6 aims at first breach 131 and hugs closely the apron 13 rear side, and isolator panel 7 aims at second breach 132 and hugs closely the apron 13 rear side. The front sealing plate 12 is provided with a transparent window 122, and the front cover plate 13 is provided with an observation hole 133 aligned with the transparent window 122. The rear side of the observation hole 133 is fixedly disposed on the shielding ring 15, and the shielding ring 15 extends to the transparent window 122. The embodiment has two transparent windows 122, the transparent window 122 of top aims at the energy storage sign and opens and shuts the indicator panel, and the transparent window 122 of below aims at the barometer, and the corresponding three observation hole 133 and the shading ring 15 that aim at the energy storage sign, open and shut indicator panel and barometer respectively that have set up.

As shown in fig. 10 to 12, the case 1 has a further detailed structure as follows:

the side plate frame 11 comprises an upper side plate 111, a lower side plate 112, a left side plate 113 and a right side plate 114, wherein the upper side plate 111, the lower side plate 112, the left side plate 113 and the right side plate 114 are welded in sequence to form a rectangular frame; the upper side plate 111 is bent downwards to form an upper sealing plate 1111, the lower side plate 112 is bent upwards to form a lower sealing plate 1121, the left side plate 113 is bent rightwards to form a left sealing plate 1131, the right side plate 114 is bent leftwards to form a right sealing plate 1141, the upper sealing plate 1111, the lower sealing plate 1121, the left sealing plate 1131 and the right sealing plate 1141 are sequentially butted to form a rectangular mounting ring 115, the front sealing plate 12 is suitable for being fixedly arranged on the rectangular mounting ring 115 through a fastener 17, and a rectangular sealing gasket 16 is arranged between the front sealing plate 12 and the rectangular mounting ring 115. The side plate frame 11 is formed by bending and welding a plate, and has the advantages of convenience in processing, reliable structure, good sealing property and low cost; and the rectangular mounting ring 115 that forms of bending cooperates with the rectangular sealing gasket 16, can guarantee the leakproofness between curb plate frame 11 and the preceding shrouding 12, and fastener 17 can pass preceding shrouding 12 and rectangular sealing gasket 16 in proper order and fix, has simple to operate's advantage.

The front closing plate 12 is bent backward at both sides to form positioning plates 123, and the positioning plates 123 at both sides are adapted to be tightly attached to both sides of the side plate frame 11. The positioning plate 123 enables the front sealing plate 12 to be accurately mounted on the side plate frame 11, and the positioning plate 123 can increase the wrapping performance of the front sealing plate 12, so as to further increase the sealing performance of the box body 1.

The front cover plate 13 is formed with a support plate 134 bent backward in the circumferential direction, and the rear end of the support plate 134 abuts against the front closure plate 12, so that a mounting cavity 14 is formed between the front closure plate 12 and the front cover plate 13. The structure of the support plate 134 of the front cover plate 13 can be formed only by bending a plate material, and is convenient to process and assemble.

An upper wire outlet hole 116 is formed at the upper end of the side plate frame 11, a lower wire outlet hole 117 is formed at the lower end of the side plate frame 11, and a wire penetrating sleeve 118 is hermetically arranged in the upper wire outlet hole 116 and the lower wire outlet hole 117. The upper part of the box body 1 is suitable for installing an instrument room, and the upper wire outlet hole 116 is used for connecting the instrument room through secondary wire laying; the lower part of the box body 1 is suitable for installing a cable chamber, and the lower outlet hole 117 is used for connecting the cable chamber through secondary paying-off. In addition, the threading sleeve 118 can completely wrap the secondary paying-off, so that the sealing performance of the box body 1 is ensured.

As shown in fig. 13, there is shown a switchgear comprising a gas chamber 200, and a totally enclosed operating chamber 100; a breaker 201 and a disconnecting switch 202 are arranged in the gas chamber 200, the totally-enclosed operating chamber 100 is fixedly arranged on the front side of the gas chamber 200, the breaker operating mechanism 2 is suitable for penetrating through the gas chamber 200 and driving the breaker 201 to act, and the disconnecting switch operating mechanism 3 is suitable for penetrating through the gas chamber 200 and driving the disconnecting switch 202 to act.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides a totally closed control chamber's sealed coupling subassembly which characterized in that: comprises an operating member, a perforation external member and a driving shaft; the driving shaft is rotatably arranged on the circuit breaker operating mechanism or the disconnecting switch operating mechanism, and the rotation of the driving shaft is suitable for realizing the functional actions of the circuit breaker operating mechanism and the disconnecting switch operating mechanism respectively; the operation part is arranged in the perforation external member in a sealing and rotating mode, extends into the box body and is suitable for being linked with the driving shaft to rotate;

2. The sealed coupling assembly of a totally enclosed operator compartment as claimed in claim 1, wherein: the perforation external member includes T type swivel nut and gland nut, T type swivel nut includes sealing ring and screwed pipe, T type swivel nut is suitable for passing the handle hole, the sealing ring rear end is suitable for to support tightly preceding shrouding leading flank, the sealing ring with be provided with the tip sealing washer between the preceding shrouding, the operating part rotate set up in the screwed pipe is inboard, the operating part with be provided with radial sealing washer between the screwed pipe, gland nut threaded connection in the screwed pipe outside, gland nut is suitable for to support tightly preceding shrouding trailing flank will the perforation external member is fixed in on the preceding shrouding.

3. The sealed coupling assembly of a totally enclosed operator compartment as claimed in claim 2, wherein: the front end of the driving shaft is also fixedly provided with a limiting sleeve, the inner diameters of the T-shaped threaded sleeve and the limiting sleeve are slightly larger than the outer diameter of the intermediate disc, and the intermediate disc is positioned in the T-shaped threaded sleeve and/or the limiting sleeve.

4. The sealed coupling assembly of a totally enclosed operator compartment as claimed in claim 2, wherein: a first sealing groove is formed in the rear side of the sealing ring, and the end sealing ring is installed in the first sealing groove; a second sealing groove is formed in the outer side of the operating piece, and the radial sealing ring is installed in the second sealing groove.

5. The sealed coupling assembly of a totally enclosed operator compartment as claimed in claim 2, wherein: operation incisions are formed in the peripheral sides of the T-shaped threaded sleeve and the compression nut, and the operation incisions are suitable for operating the T-shaped threaded sleeve and the compression nut through a wrench.