CN108767703B

CN108767703B - Looped network circuit breaker switch cabinet

Info

Publication number: CN108767703B
Application number: CN201810684023.7A
Authority: CN
Inventors: 李金海; 张惠芳; 徐伟峰; 彭良军; 舒柯辉; 史虹
Original assignee: Yinzhou Electric Branch Of Ningbo Yongneng Electric Power Industry Investment Co ltd
Current assignee: Yinzhou Electric Branch Of Ningbo Yongneng Electric Power Industry Investment Co ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2023-07-07
Anticipated expiration: 2038-06-28
Also published as: CN108767703A

Abstract

The invention relates to the technical field of electrical cabinets, in particular to a ring network breaker switch cabinet, at least one of vertical beams (28) is hollow, an air channel (35) is formed at the hollow position of the vertical beam (28), an air vent (36) is formed in the side wall of the hollow vertical beam (28), the ring network breaker switch cabinet further comprises a hollow bottom plate (37), the hollow bottom plate (37) is provided with an air vent cavity (38), the hollow bottom plate (37) is fixedly connected with the bottom ends of the four vertical beams (28), a plurality of air holes (40) are formed in the upward side wall of the hollow bottom plate (37), the air vent cavity (38) is communicated with the air channel (35), and a fan (41) for blowing outside air into the air channel (35) is fixed in the vertical beam (28). The looped network circuit breaker switch cabinet is better in internal air circulation effect, and therefore normal and stable operation is guaranteed.

Description

Looped network circuit breaker switch cabinet

Technical Field

The invention relates to the technical field of electrical cabinets, in particular to a looped network circuit breaker switch cabinet.

Background

Ring network circuit breaker switch cabinets are commonly used in power supply facility equipment and occupy an important role in the power supply field.

Ring network circuit breaker cubical switchboard among the prior art is generally square to all include the cabinet body, and the cabinet body includes curb plate, vertical beam and door etc. again, is provided with the primordial qi piece in the cabinet body. When the ring network circuit breaker switch cabinet works, the element can generate heat, and if the heat is not timely radiated, the element is overheated to influence the working performance.

In addition, the switch cabinet of the ring network circuit breaker is generally provided with a knife and a switch seat, and when the knife is clamped with or disconnected from the switch seat, the switch-on and switch-off of the switch cabinet of the ring network circuit breaker are realized. In the prior art, the brake shoe is generally formed by two brake blades, and the brake blade is generally formed by a metal block, and the brake blade is generally a metal block with elasticity, and the brake shoe middle part has the gate, and the brake blade can the joint in the gate, is fixed to the brake blade by the elasticity effect of brake blade, and such structure has following not enough:

1. after multiple uses, the elasticity of brake pad can decay to probably make the closing state under vibrations, gravity or other factors, the knife switch also can produce not hard up, influences looped netowrk circuit breaker cubical switchboard's normal work.

2. The brake pads and the brake blades are not covered, so that the brake pads and the brake blades are exposed, and foreign matters can touch the brake pads or the brake blades carelessly, so that the working stability of the brake pads and the brake blades can be influenced, and even electric shock risks can be caused.

Disclosure of Invention

The present invention aims to solve at least one of the above technical problems.

The invention aims to solve the technical problem of providing at least one ring network breaker switch cabinet with better internal air circulation effect, thereby ensuring normal and stable operation.

In order to solve the technical problems, the ring network breaker switch cabinet comprises a square cabinet body, the cabinet body comprises a plurality of side plates and four vertical beams, the side plates are fixedly connected with the vertical beams, a support is fixedly arranged in the cabinet body, a rotating shaft is rotatably connected to the support, a driver for driving the rotating shaft to rotate is fixedly connected to the support, the driver is in driving connection with one end of the rotating shaft, a mounting seat is fixedly arranged on the rotating shaft, a first brake pad and a second brake pad are fixedly connected to the mounting seat, a brake port is formed in the middle of the brake seat, a mounting rod is fixedly connected to the support, a brake blade seat is fixedly connected to the mounting rod, a brake blade is fixedly arranged on the brake blade seat, the ring network breaker switch cabinet is characterized in that at least one of the vertical beams is hollow, an air channel is formed at the hollow position of the vertical beams, an air vent is arranged on the side wall of the hollow vertical beams, the ring network breaker switch cabinet further comprises a hollow bottom plate, the hollow bottom plate is fixedly connected with a first brake pad and a second brake pad, a brake port is arranged in the hollow bottom plate, the bottom plate is fixedly connected to the hollow bottom plate is arranged on the hollow bottom plate, and the hollow bottom plate is fixedly connected to the hollow side walls of the vertical beams, and the air channels are fixedly connected to the air channels are blown into the air channels.

After adopting above-mentioned structure, have following advantage: when the ring network breaker switch cabinet works, the fan can be started, the fan blows external air into the air duct, then flows into the ventilation cavity, and then blows to the inside of the ring network breaker switch cabinet through the air hole, so that the air circulation effect inside the ring network breaker switch cabinet is better, and the temperature of components inside the ring network breaker switch cabinet can be effectively reduced.

Preferably, one end fixedly connected with insulating rubber straight board of plug-in strip, the upper end and the floodgate blade holder butt of insulating rubber straight board, the outer fixedly connected with insulating rubber "C" template of floodgate seat, the lower extreme and the mount pad butt of insulating rubber "C" template, insulating rubber "C" template has the opening, the opening is towards insulating rubber straight board direction, works as when plug-in strip and floodgate joint, the lower extreme and the mount pad butt of insulating rubber straight board, the upper end and the floodgate blade holder butt of insulating rubber "C" template, the side of insulating rubber "C" template and the straight board butt of insulating rubber. Like this, formed a relatively confined structure, the material of insulating rubber straight board and insulating rubber "C" template is insulating rubber, can avoid the external touching to it to cause danger, perhaps influence looped netowrk circuit breaker cubical switchboard's work, perhaps prevent the influence of dust etc. further guarantees looped netowrk circuit breaker cubical switchboard normal stable work.

Drawings

Fig. 1 is a side view of a looped network circuit breaker switchgear of the present invention.

Fig. 2 is a schematic diagram of the structure of the looped network breaker switch cabinet according to the present invention at the bracket position.

Fig. 3 is a schematic view of the structure of the switch seat and the switch blade at the time of closing.

Fig. 4 is a schematic view of another view angle structure of the switch base and the switch blade at the time of closing.

Fig. 5 is a front view of the gate seat and knife in position during closing.

FIG. 6 is a front view of the shutter base and blade in position when the shutter is opened.

FIG. 7 is a schematic view of the structure of the switch seat and the switch blade at the switch-on position.

Fig. 8 is a schematic view of an explosion structure at the gate seat and knife position.

Fig. 9 is a schematic view of an exploded structure from another perspective at the gate seat and knife position.

Fig. 10 is a schematic cross-sectional view at A-A in fig. 5.

Fig. 11 is a schematic cross-sectional view of the blade.

FIG. 12 is a schematic cross-sectional view of a brake shoe.

Fig. 13 is a schematic diagram of the cabinet body of the looped network circuit breaker switch cabinet of the present invention.

Fig. 14 is a schematic diagram of a split cabinet of the ring network circuit breaker switchgear of the present invention.

Fig. 15 is a schematic view of a water absorbing plate of the looped network breaker switchgear of the present invention.

Fig. 16 is a schematic cross-sectional view of the ring network breaker switch cabinet of the invention at the installation position of the vertical beam and the water absorbing plate.

Fig. 17 is a schematic view of the invention at a top position of a vertical beam in a ring network circuit breaker switchgear.

Fig. 18 is a schematic view of a vertical beam in a ring network circuit breaker switchgear of the present invention.

Fig. 19 is a schematic view of another view of a vertical beam in a ring network circuit breaker switchgear of the invention.

Fig. 20 is an enlarged schematic view at a in fig. 19.

Fig. 21 is a schematic view of the invention in a looped network circuit breaker switchgear at the installation location of the vertical beam and the hollow bottom plate.

Fig. 22 is a partial schematic view of a hollow bottom plate in a ring network circuit breaker switchgear of the present invention.

Fig. 23 is a schematic cross-sectional view of a hollow floor in a looped network circuit breaker switchgear of the present invention.

Wherein:

1. a bracket; 2. a rotating shaft; 3. a driver; 4. a mounting base; 5. a first shutter; 6. a second shutter; 7. a brake base; 8. a gate; 9. a mounting rod; 10. a gate knife holder; 11. a knife switch; 12. m-shaped clamp springs; 13. perforating; 14. a threaded hole; 15. a screw; 16. bending sections; 17. an insulating rubber straight plate; 18. insulating rubber 'C' shaped board; 19. an opening; 20. a concave arc profile; 21. a convex arc profile; 22. a relief groove; 23. a convex arc surface; 24. a concave arc surface; 25. a guide surface; 26. a cabinet body; 27. a side plate; 28. a vertical beam; 29. a first limit bar; 30. the second limit bar; 31. a clamping groove; 32. a water absorbing plate; 33. mounting steps; 34. an elastic frame; 35. an air duct; 36. a vent; 37. a hollow bottom plate; 38. a ventilation chamber; 39. a limiting block; 40. air holes; 41. a blower; 42. a convex arc sidewall; 43. a through hole; 44. concave arc type groove; 45. a through port; 46. and (3) a sealing ring.

Detailed Description

The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of their inclusion to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. A component, step or element from one embodiment may be conceived that may be present or utilized in another embodiment. The particular embodiments shown and described may be replaced with a wide variety of alternative and/or equivalent implementations without departing from the scope of the embodiments of the present disclosure. This application is intended to cover any adaptations or variations of the embodiments discussed herein. It will be apparent to those skilled in the art that alternative embodiments may be practiced using only some of the described aspects. Specific numbers, materials, and configurations are described herein in the embodiments for purposes of illustration, however, alternative embodiments may be practiced by one skilled in the art without these specific details. In other instances, well-known features may be omitted or simplified in order not to obscure the illustrative embodiments.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "upper" and "lower" are used herein with reference to corresponding positions in the drawings.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "provided with," "mounted to," "connected to," and "connected to" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-23, in one embodiment, a looped network circuit breaker switch cabinet comprises a square cabinet body 26, the cabinet body 26 comprises a plurality of side plates 27 and four vertical beams 28, a support 1 is fixed in the cabinet body 26, a rotating shaft 2 is connected to the support 1 in a rotating mode, a driver 3 for driving the rotating shaft 2 is fixedly connected to the support 1, the driver 3 is connected with one end of the rotating shaft 2 in a driving mode, a mounting seat 4 is fixedly arranged on the rotating shaft 2, a first brake pad 5 and a second brake pad 6 are fixedly connected to the mounting seat 4, the first brake pad 5 and the second brake pad 6 form a brake seat 7, a brake port 8 is arranged in the middle of the brake seat 7, a mounting rod 9 is fixedly connected to the support 1, the axis of the mounting rod 9 is parallel to the axis of the rotating shaft 2, a brake blade seat 10 is fixedly connected to the mounting rod 9, a brake blade 11 is fixedly arranged on the brake blade seat 10, the looped network circuit breaker switch cabinet further comprises an M-shaped clamp spring 12, the M-shaped clamp spring 12 is provided to the first brake pad 5 and the second brake pad 6, the M-shaped clamp spring is in a mode 12 and is in a mode of being close to one side to the first brake pad 6 and is in a mode of being abutted against the second brake pad 6, and the second brake pad 6 is in a mode of being abutted against the second brake pad 6.

The first brake pad 5 and the second brake pad 6 generally have certain elasticity, but the situation that elasticity is weakened still to generate looseness when the brake is closed still occurs after long-term use, and after the M-shaped clamp spring 12 is added, the elastic restoring force of the first brake pad 5 and the second brake pad 6 can be ensured, so that the folding effect of the first brake pad 5 and the second brake pad 6 after the brake port 8 is opened is ensured, and the first brake pad 5 and the second brake pad 6 are not loosened when being matched with the brake blade 11.

The middle section of the M-shaped clamp spring 12 is fixedly connected with the first brake pad 5 and the second brake pad 6, a through hole 13 is formed in the middle section of the M-shaped clamp spring 12, a threaded hole 14 is formed in the first brake pad 5 and the second brake pad 6, the looped network circuit breaker switch cabinet further comprises a screw 15, and the screw 15 penetrates through the through hole 13 and is in threaded connection with the threaded hole 14. The screw 15 is adopted for installation, so that the installation is convenient.

The M-shaped clamp spring 12 is provided with a bending section 16 at the position of the gate 8. Therefore, when the first brake pad 5 and the second brake pad 6 are opened relatively, the bending section 16 has corresponding deformability, and is suitable for the relative opening of the first brake pad 5 and the second brake pad 6, so that the first brake pad 5 and the second brake pad 6 can be opened smoothly to enable the knife switch 11 to enter.

One end fixedly connected with insulating rubber straight board 17 of switch blade 11, the upper end and the switch blade seat 10 butt of insulating rubber straight board 17, the outer fixedly connected with insulating rubber "C" template 18 of switch blade seat 7, insulating rubber "C" template 18's lower extreme and mount pad 4 butt, insulating rubber "C" template 18 has opening 19, opening 19 is towards insulating rubber straight board 17 direction, works as when switch blade 11 and switch 8 joint, the lower extreme and the mount pad 4 butt of insulating rubber straight board 17, the upper end and the switch blade seat 10 butt of insulating rubber "C" template 18, the side of insulating rubber "C" template 18 and the straight board 17 butt of insulating rubber. The driver 3 can drive the pivot 2 to rotate, like this, can make plug-in strip 11 and plug-in strip 8 joint or separation, be in the combined floodgate state promptly when plug-in strip 11 and plug-in strip 8 joint, because the one end fixedly connected with insulating rubber straight board 17 of plug-in strip 11, the outer fixedly connected with insulating rubber "C" template 18 of brake pad 7, insulating rubber "C" template 18 has opening 19, opening 19 orientation insulating rubber straight board 17 direction, works as when plug-in strip 11 and plug-in strip 8 joint, the upper end and the plug-in strip 10 butt of insulating rubber straight board 17, the lower extreme and the mount pad 4 butt of insulating rubber straight board 17, the upper end and the plug-in strip 10 butt of insulating rubber "C" template 18, the lower extreme and the mount pad 4 butt of insulating rubber "C" template 18, the side of insulating rubber "C" template 18 and insulating rubber straight board 17 butt, like this has formed a relatively confined structure, insulating rubber straight board 17 and insulating rubber "C" 18 "can avoid the influence of the material of insulating rubber to the switch cabinet or the danger of dust or the like to the outside influence on the switch or prevent. The insulating rubber "C" shaped plate 18 has an opening 19 so as to give way to the blade 11 and avoid blocking the blade 11 during opening or closing.

The insulating rubber "C" shaped plate 18 is "C" shaped in cross section and the material is insulating rubber, and is therefore referred to as an insulating rubber "C" shaped plate.

The gate knife seat 10 has a concave arc surface 20 towards one end of the gate seat 7, and the insulating rubber 'C' shaped plate 18 has a convex arc surface 21 corresponding to the concave arc surface 20 towards one end of the gate knife seat 10. Because the rotating shaft 2 is generally located right below the knife switch 11, when the rotating shaft 2 rotates, the concave arc molded surface 20 and the convex arc molded surface 21 can properly give way to the insulating rubber 'C' -shaped plate 18, so that the matching effect of the insulating rubber 'C' -shaped plate 18 and the knife switch seat 10 is better.

The inner side of the insulating rubber C-shaped plate 18 is provided with a yielding groove 22 for yielding the M-shaped clamping spring 12, and the M-shaped clamping spring 12 is positioned in the yielding groove 22. In this way, the assembly is convenient, and the M-shaped clamp spring 12 is covered by the insulating rubber C-shaped plate 18, so that the influence of the external environment on the M-shaped clamp spring is avoided.

The outer fixedly connected with insulating rubber "C" template 18 of brake shoe 7 means, insulating rubber "C" template 18 is equipped with perforation 13, be equipped with screw hole 14 on first brake block 5, the second brake block 6, looped netowrk circuit breaker cubical switchboard still includes screw 15, screw 15 passes perforation 13 and screw hole 14 threaded connection, screw 15 is insulating screw.

One end fixedly connected with insulating rubber straight board 17 of switch blade 11 means, insulating rubber straight board 17 is equipped with perforation 13, be equipped with screw hole 14 on the switch blade 11, looped netowrk circuit breaker cubical switchboard still includes screw 15, screw 15 passes perforation 13 and screw hole 14 threaded connection, screw 15 is insulating screw. The screw 15 is adopted for installation, so that the installation is convenient. And, the screw 15 is an insulating screw, avoiding the influence on the inside when the screw is contacted with the outside. Insulating screws are commercially available, in particular screws made of plastic material.

The surfaces on both sides of the knife 11 are convex arc surfaces 23, and the surfaces on one side of the first gate 5 and the second gate 6 facing the knife 11 are concave arc surfaces 24 matched with the convex arc surfaces 23. In this way, the cooperation of the convex arc surface 23 and the concave arc surface 24 can keep the first brake pad 5 and the second brake pad 6 stable when being closed with the knife 11, and avoid the brake release due to vibration or other factors.

The ends of the first shutter 5 and the second shutter 6 have guiding surfaces 25 for guiding the blades 11 into the gate 8. In this way, the guiding surface 25 plays a guiding role, and can facilitate closing.

The vertical beams 28 are provided with a first limit bar 29 and a second limit bar 30 on two opposite side walls, a space is reserved between the first limit bar 29 and the second limit bar 30, a clamping groove 31 is formed at the space, the side plate 27 is fixedly connected with the first limit bar 29, the ring network circuit breaker switch cabinet further comprises at least one water absorbing plate 32, one end of the water absorbing plate 32 is clamped with the clamping groove 31 of one vertical beam 28, the other end of the water absorbing plate 32 is clamped with the clamping groove 31 of the other vertical beam 28, and the water absorbing plate 32 is positioned on the inner side of the side plate 27. The vertical beams of the side plates 27 can be two or three, etc., and the rest of the looped network breaker switch cabinet can be covered by a door. The number of the water absorbing sheets 32 may be one, but may be plural, corresponding to the number of sides of the cabinet 26.

Due to the water absorbing plate 32, when the looped network breaker switch cabinet is in a humid environment, the water absorbing plate 32 can absorb moisture in the air of the looped network breaker switch cabinet, and the use safety of the looped network breaker switch cabinet is ensured. In addition, the water absorbing plate 32 is also convenient to install and detach under the action of the first limit bar 29 and the second limit bar 30.

The material of the water absorbing sheet 32 may be specifically made of water absorbing cotton that absorbs water well.

The outer side surface of the first limiting bar 29 and the side wall of the vertical beam 28 form an installation step 33 for installing the side plate 27. In this way, the mounting step 33 just mounts the side plate 27, so that the whole ring network breaker switch cabinet is compact in structure. The side plate 27 can be fixed to the first limiting bar 29 by screws.

An elastic frame 34 is arranged around the water absorbing plate 32. Therefore, when the water absorbing plate 32 is installed, the water absorbing plate 32 can be bent manually, and then the water absorbing plate 32 is clamped in the clamping groove 31 to be installed, so that the installation and the disassembly are convenient.

The material of the elastic frame 34 is metal.

The elastic frame 34 is made of plastic.

At least one of the vertical beams 28 is hollow, in particular, one or two or three or four may be hollow; the hollow position of the vertical beam 28 is provided with an air duct 35, the side wall of the hollow vertical beam 28 is provided with an air vent 36, the ring network breaker switch cabinet further comprises a hollow bottom plate 37, the hollow bottom plate 37 is provided with an air vent cavity 38, the hollow bottom plate 37 is fixedly connected with the bottom ends of the four vertical beams 28, specifically, two limiting blocks 39 are fixedly connected to the vertical beam 28 through screws, the two limiting blocks 39 are respectively positioned on the upper side and the lower side of the hollow bottom plate 37, and the hollow bottom plate 37 is clamped and fixed by the two limiting blocks 39; of course, other structures are possible, for example, the hollow base plate 37 is directly connected with the base plate of the ring network breaker switch cabinet by screws; the side wall of the hollow bottom plate 37 facing upwards is provided with a plurality of air holes 40, the ventilation cavity 38 is communicated with the air duct 35, and a fan 41 for blowing outside air into the air duct 35 is fixed in the vertical beam 28. After having above-mentioned structure, at looped netowrk circuit breaker switch cabinet during operation, can start fan 41, fan 41 blows the wind channel 35 with outside air, later flows in ventilation chamber 38, and rethread gas pocket 40 blows to inside the looped netowrk circuit breaker switch cabinet to make the inside air circulation effect of looped netowrk circuit breaker switch cabinet better, can effectively reduce the temperature of the inside components and parts of looped netowrk circuit breaker switch cabinet. The hollow floor 37 may be made of plastic material.

The ventilation cavity 38 is communicated with the air duct 35, namely, a convex arc-shaped side wall 42 is arranged on the inner side of the hollow vertical beam 28, a through hole 43 is formed in the convex arc-shaped side wall 42 and at a position corresponding to the hollow bottom plate 37, the hollow bottom plate 37 is provided with a concave arc-shaped notch 44 matched with the convex arc-shaped side wall 42, a through hole 45 is formed in the concave arc-shaped notch 44, the concave arc-shaped notch 44 is abutted to the convex arc-shaped side wall 42, and the through hole 43 is communicated with the through hole 45. Thus, on one hand, the concave arc-shaped groove 44 and the convex arc-shaped side wall 42 just play a role in positioning, so that the installation is convenient, and on the other hand, the communication between the through hole 43 and the through hole 45 realizes the communication between the ventilation cavity 38 and the air duct 35.

An airtight structure is arranged between the concave arc-shaped groove 44 and the convex arc-shaped side wall 42.

The airtight structure is that a sealing ring 46 is arranged on the wall surface of the concave arc-shaped groove 44.

The convex arc side wall 42 is provided with a plurality of air holes 40 from top to bottom. Thus, the air in the air duct 35 can be blown out through the air hole 40, and the air circulation effect in the looped network breaker switch cabinet is further improved.

Preferably, the top of the looped network circuit breaker switch cabinet is provided with an exhaust fan.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the claims, and other corresponding modifications, which would be apparent to those skilled in the art using the technical solutions and concepts of the present invention, are intended to fall within the scope of the claims.

Claims

1. The looped network circuit breaker switch cabinet comprises a cabinet body (26) which is square, the cabinet body (26) comprises a plurality of side plates (27) and four vertical beams (28), the side plates (27) are fixedly connected with the vertical beams (28), a bracket (1) is fixedly arranged in the cabinet body (26), a rotating shaft (2) is rotationally connected to the bracket (1), a driver (3) which is used for driving the rotating shaft (2) to rotate is fixedly connected to the bracket (1), the driver (3) is in driving connection with one end of the rotating shaft (2), a mounting seat (4) is fixedly arranged on the rotating shaft (2), a first brake blade (5) and a second brake blade (6) are fixedly connected to the mounting seat (4), a brake seat (7) is formed by the first brake blade (5) and the second brake blade (6), a brake port (8) is arranged in the middle of the brake seat (7), a mounting rod (9) is fixedly connected to the bracket (1), a brake seat (10) is fixedly connected to the mounting rod (9), a brake blade (11) is fixedly arranged on the knife seat (10),

at least one of the vertical beams (28) is hollow, an air channel (35) is formed at the hollow position of the vertical beam (28), an air vent (36) is formed in the side wall of the hollow vertical beam (28), the ring network breaker switch cabinet further comprises a hollow bottom plate (37), the hollow bottom plate (37) is provided with an air vent cavity (38), the hollow bottom plate (37) is fixedly connected with the bottom ends of the four vertical beams (28), a plurality of air holes (40) are formed in the upward side wall of the hollow bottom plate (37), the air vent cavity (38) is communicated with the air channel (35), and a fan (41) for blowing external air into the air channel (35) is fixed in the vertical beam (28);

one end fixedly connected with insulating rubber straight board (17) of plug-in strip (11), the upper end and the gate blade holder (10) butt of insulating rubber straight board (17), the outer fixedly connected with insulating rubber "C" template (18) of gate seat (7), the lower extreme and mount pad (4) butt of insulating rubber "C" template (18), insulating rubber "C" template (18) have opening (19), opening (19) are towards insulating rubber straight board (17) direction, works as when plug-in strip (11) and gate (8) joint, the lower extreme and mount pad (4) butt of insulating rubber straight board (17), the upper end and gate blade holder (10) butt of insulating rubber "C" template (18), the side of insulating rubber "C" template (18) and insulating rubber straight board (17) butt.

2. The ring network circuit breaker switch cabinet according to claim 1, wherein the ventilation cavity (38) is communicated with the air duct (35), the inner side of the hollow vertical beam (28) is provided with a convex arc-shaped side wall (42), a through hole (43) is formed in the convex arc-shaped side wall (42) and at a position corresponding to the hollow bottom plate (37), the hollow bottom plate (37) is provided with a concave arc-shaped notch (44) matched with the convex arc-shaped side wall (42), a through hole (45) is formed in the concave arc-shaped notch (44), the concave arc-shaped notch (44) is abutted with the convex arc-shaped side wall (42), and the through hole (43) is communicated with the through hole (45).

3. The looped network circuit breaker switchgear according to claim 2, wherein an airtight seal is provided between said concave arc-shaped slot (44) and convex arc-shaped side wall (42).

4. The ring network circuit breaker switch cabinet according to claim 1, characterized in that the gate blade holder (10) has a concave arc profile (20) towards one end of the gate seat (7), and the insulating rubber "C" shaped plate (18) has a convex arc profile (21) corresponding to the concave arc profile (20) towards one end of the gate blade holder (10).

5. The ring network circuit breaker switch cabinet according to claim 1, wherein the outer fixedly connected with insulating rubber 'C' shaped plate (18) of the brake base (7) means that the insulating rubber 'C' shaped plate (18) is provided with a through hole (13), threaded holes (14) are formed in the first brake pad (5) and the second brake pad (6), the ring network circuit breaker switch cabinet further comprises a screw (15), the screw (15) penetrates through the through hole (13) to be in threaded connection with the threaded hole (14), and the screw (15) is an insulating screw.

6. The looped network circuit breaker switch cabinet according to claim 1, wherein one end of the knife switch (11) is fixedly connected with an insulating rubber straight plate (17), the insulating rubber straight plate (17) is provided with a through hole (13), the knife switch (11) is provided with a threaded hole (14), the looped network circuit breaker switch cabinet further comprises a screw (15), the screw (15) penetrates through the through hole (13) to be in threaded connection with the threaded hole (14), and the screw (15) is an insulating screw.