CN218124137U

CN218124137U - Environment-friendly gas-insulated switch cabinet gas tank

Info

Publication number: CN218124137U
Application number: CN202221856475.7U
Authority: CN
Inventors: 曹玉生; 詹永钦
Original assignee: Shanghai Bapei Switch Equipment Co ltd
Current assignee: Shanghai Bapei Switch Equipment Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-12-23
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses an environmental protection gas insulation cubical switchboard gas tank, include: three groups of pole columns are arranged in the gas box and correspond to the three phases A, B and C, and a three-phase outlet sleeve is connected to a bottom outlet end of each pole column; the top of the pole is connected with a circuit breaker mechanism outside the gas tank through a corrugated pipe; the line outlet end of the pole is connected with a support, the support is connected with a guide rod, the guide rod is provided with a sliding guide sleeve, and two ends of the sliding guide sleeve are provided with a second watchband contact grease and a third watchband contact grease; one end of the transmission shaft is rotatably connected to the inner wall of the air box, the other end of the transmission shaft is connected with an isolation mechanism outside the air box, and a crank arm is arranged on the transmission shaft and connected with the sliding guide sleeve; the gas tank top is equipped with the three-phase wire casing pipe, the intraductal contact that matches with the slip uide bushing that is equipped with of cover, the gas tank lateral part is equipped with ground bus bar and the ground contact that matches with the slip uide bushing.

Description

Environment-friendly gas insulation switch cabinet gas tank

Technical Field

The utility model relates to an environmental protection gas insulation switch cabinet gas tank belongs to high tension switchgear technical field.

Background

The gas insulation switch cabinet in the current market adopts sulfur hexafluoride, nitrogen and dry air as insulation, among three gases, the sulfur hexafluoride gas insulation capability is strongest, the sulfur hexafluoride gas insulation capability occupies the output of a large number of switch cabinets in the market, the environmental climate temperature rise can be caused to generate greenhouse effect by using a large amount of sulfur hexafluoride for a long time, and the nitrogen or dry air adopted as the insulation switch cabinet can only meet the design of a switch cabinet product with the voltage of 12 kilovolts at present or can not meet the insulation design of the switch cabinet product with the voltage of 40.5 kilovolts at very high rated pressure. At present, three-station switches of a switch cabinet in the whole market adopt the structural design of knife switch rotation and direct-acting rotation, and the problems of high cost, limited insulation distance, uneven electric field, high temperature rise, large volume and the like of a product are solved. The not enough problem of cubical switchboard in this product design structure solution existing market. The three stations adopt the rotatory fracture insulation distance increase of design that slides, insulating ability obtains promoting, three stations sliding structure bodies all are the cylinder shape, and the electric field is more even. When the three-station switch-on state is realized, the current is from top to bottom when the three-station switch-on state is used as a feeder cabinet, the current is from bottom to top when the three-station switch-on state is used as an incoming cabinet, and the heat of the heating body is radiated and flows out from bottom to top, so that the temperature is favorably reduced. The three-position switch structure can realize the advantage of a two-position switch by removing the grounding position. When the width of the product is not changed, the structure can be filled with any one of the following three gases (sulfur hexafluoride, nitrogen and dry air) to realize the product design of the 12-40.5 KV switch cabinet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide an environmental protection gas insulated switchgear gas tank.

An environmental protection gas insulated switchgear gas tank, includes:

the air box is internally provided with three groups of polar columns corresponding to three phases A, B and C, and a three-phase outlet sleeve is connected to a bottom outlet end of the polar column; the top of the pole is connected with a circuit breaker mechanism outside the gas tank through a corrugated pipe;

the support is connected with a lead-out end of the pole, the support is connected with a guide rod, the guide rod is provided with a sliding guide sleeve, and two ends of the sliding guide sleeve are provided with a second watchband contact grease and a third watchband contact grease;

one end of the transmission shaft is rotatably connected to the inner wall of the air box, the other end of the transmission shaft is connected with an isolation mechanism outside the air box, and a crank arm is arranged on the transmission shaft and connected with the sliding guide sleeve; the gas tank top is equipped with the three-phase wire casing pipe, the intraductal contact that matches with the slip uide bushing that is equipped with of cover, the gas tank lateral part is equipped with ground bus bar and the ground contact that matches with the slip uide bushing.

Furthermore, the middle part of the pole is provided with a conductive clamp, and the side part of the conductive clamp is connected with the support through flexible connection.

Further, the conductive clamp is provided with an insulating pull rod, the insulating pull rod is connected with the corrugated pipe, and the corrugated pipe and the air box are sealed through a sealing ring.

Furthermore, the bottom of the pole is connected with a first feeder, a second feeder and a third feeder through a second cushion block, a first cushion block is arranged between the second feeder and the third feeder, and the first feeder, the second feeder and the third feeder are connected with a three-phase outgoing sleeve.

Furthermore, the guide rod is connected with the support through a guide sleeve, and a first watchband contact grease is arranged between the guide rod and the guide sleeve.

Furthermore, an explosion-proof pressure relief valve device is arranged at the lower part of the rear plate of the air box.

Furthermore, the sliding guide sleeve is connected with the guide rod through a fixing screw.

Furthermore, one end of the transmission shaft is connected with the air box through a first bearing seat, and the other end of the transmission shaft is connected with a contact part of the air box through a second bearing seat.

Compared with the prior art, the utility model discloses the beneficial effect who reaches: the utility model discloses product safety insulation distance is higher than conventional product, compares with present product, as long as fill into normal pressure gas just can satisfy insulating requirement, really accomplishes the pollution-free environment of environmental protection, and the product cost is low, and environmental protection cubical switchboard is also future development trend.

Drawings

Fig. 1 is a sectional view of the switching-on state of the utility model;

fig. 2 is a front view of the closing state of the utility model;

FIG. 3 is a schematic diagram of the grounding state of the present invention;

FIG. 4 is a schematic view of a second embodiment of the present invention;

in the figure: 1. a circuit breaker mechanism; 2. an isolation mechanism; 3. a gas tank; 4. a wire outlet sleeve; 5. a first feeder line; 6. a second feeder line; 7. a feeder line III; 8. a first cushion block; 9. a second cushion block; 10. a pole column; 11. a support; 12. a guide sleeve; 13. the watch strap contacts grease I; 14. a guide rod; 15. a ground contact; 16. a ground bus; 17. contacting the watchband with grease; 18. a sliding guide sleeve; 19. the watch band contacts grease; 20. a sleeve; 21. a crank arm; 22. a drive shaft; 23. fixing screws; 24. a conductive clip; 25. soft connection; 26. an insulating pull rod; 27. a bellows; 28. a first bearing seat; 29. a second bearing seat; 30. and a ground terminal.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example one

As shown in fig. 1-4, an environment-friendly gas-insulated switchgear gas cabinet is disclosed, comprising:

the air box 3 is internally provided with three-phase pole columns which are divided into a far, a middle and a near corresponding A, B and C three-phase layout, and the lower outlet end at the bottom of each pole column is connected with a three-phase outlet sleeve; the top of the pole is connected with the breaker mechanism 1 through a corrugated pipe, the bottom of the pole 10 is connected with a first feeder 5, a second feeder 6 and a third feeder 7 through a second cushion block 9, a first cushion block 8 is arranged between the second feeder 6 and the third feeder 7, and the first feeder 5, the second feeder 6 and the third feeder 7 are connected with a three-phase outlet sleeve; a conductive clamp 24 is arranged inside the pole 10, an insulating pull rod 26 is arranged on the conductive clamp 24, the insulating pull rod 26 is connected with a corrugated pipe 27, and the corrugated pipe 27 and the air box 3 are sealed through a sealing ring;

the side part of the conductive clamp 24 is connected with the support 11 through a flexible connection 25, the other end of the conductive clamp is movably connected with a guide sleeve 12, the guide sleeve 12 is connected with a guide rod 14, a watchband contact grease I13 is arranged between the guide sleeve 12 and the guide rod 14, and the guide rod 14 is connected with a sliding guide sleeve 18;

one end of the transmission shaft 22 is rotatably connected to the inner wall of the air box 3, the other end of the transmission shaft 22 is used for being connected with the circuit breaker mechanism 1 outside the air box 3, a crank arm 21 is arranged on the transmission shaft 22, and the crank arm 21 is connected with the sliding guide sleeve 18; the top of the air box 3 is provided with a sleeve 20 matched with the sliding guide sleeve 18, the side part of the air box 3 is provided with a grounding busbar 16 matched with the sliding guide sleeve 18, and the grounding busbar 16 is connected with a grounding contact 15;

in this embodiment, the utility model discloses have the rotatory three-position switch structure of slidingtype, drive axis of rotation 22 through circuit breaker mechanism 1 and rotate, drive the position that slip uide bushing 18 moved between ground busbar 16 and sleeve pipe 20 through turning arm 21 and be the separating brake state, when slip uide bushing 18 moved the position of ground busbar 16 and was connected with the contact of ground busbar 16, be the ground state; a closing state when the sliding guide sleeve 18 moves to a position where it is connected to the sleeve 20 and is connected to a contact inside the sleeve 20;

a second watchband contact grease 17 and a third watchband contact grease 19 are respectively arranged at both ends of the sliding guide sleeve 18, wherein the sliding guide sleeve 18 is connected with the guide rod 14 through a fixing screw 23.

One end of the transmission shaft 22 is connected with the air box 3 through a first bearing seat 28, and the other end of the transmission shaft is connected with the contact part of the air box 3 through a second bearing seat 29.

The isolation mechanism 2 is connected with a transmission shaft 22, the transmission shaft 22 is connected with a sliding guide sleeve 18 through a crank arm 21, the sliding guide sleeve 18 is sleeved on the guide rod 14, and the upper end and the lower end of the sliding guide sleeve 18 are provided with a watchband contact finger 19 or a spring contact finger; when the isolation mechanism 2 is in the opening state, the crank arm 21 is in the opening state (232.5 degrees), when the isolation mechanism 2 operates to the closing state, the crank arm 21 rotates to 180 degrees in the reverse direction, the sliding guide sleeve 18 is connected with the sleeve 20 to be conducted to form a loop, and if the isolation mechanism 2 operates to the grounding state, the crank arm 21 rotates to 285 degrees in the clockwise direction, and the sliding guide sleeve 18 is connected with the grounding contact 15 to be conducted to form a grounding loop.

The circuit breaker mechanism 1 is connected with a movable end of a pole 10 (a vacuum arc-extinguishing chamber) through a connecting corrugated pipe 27 and an insulating pull rod 26;

when current flows in from the insulating sleeve 4, the current flows into the pole 10 (the static end of the vacuum arc-extinguishing chamber) through the feeder line I5, the feeder line II 6, the feeder line III 7, the cushion block I8 and the cushion block II 9;

breaker mechanism 1 pushes down operation closing button, breaker mechanism 1 transmission shaft 22 promotes bellows 27, insulating pull rod 26 is down moved, move when utmost point post 10 (vacuum interrupter) move the end and contact static end, the electric current flows to moving the end from static end, utmost point post 10 (vacuum interrupter) move the end and are connected to electrically conductive clamp 24, flexible coupling 25, support 11 is connected to uide bushing 12, uide bushing 12 is equipped with the watchband and touches fat 13 (the spring touches the fat), the watchband touches fat 13 (the spring touches the fat) and contacts with guide bar 14. The guide bar 14 is connected to the sliding guide sleeve 18 with a contact grease (spring contact grease) contact. The sliding guide sleeve 18 and the sleeve 20 are connected to form a current output loop, and the sleeve 20 is connected with the adjacent switch cabinet sleeve through a bus.

Example two

As shown in fig. 4, the difference between the second embodiment and the first embodiment is that the installation position of the pole 10 is adjusted from the vertical position in fig. 1 to the horizontal position in the state of fig. 4, and the rest of the structure and the working principle are consistent with those of the first embodiment.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an environmental protection gas insulation cubical switchboard gas tank, characterized by includes:

the air box (3) is internally provided with three groups of pole posts (10) corresponding to three phases A, B and C, and a three-phase outgoing line sleeve is connected to a bottom outgoing line end of each pole post (10); the top of the pole (10) is connected with a circuit breaker mechanism (1) outside the gas tank (3) through a corrugated pipe (27);

the lead-out end of the pole (10) is connected with the support (11), the support (11) is connected with a guide rod (14), the guide rod (14) is provided with a sliding guide sleeve (18), and two ends of the sliding guide sleeve (18) are provided with a second watchband contact grease and a third watchband contact grease;

one end of the transmission shaft (22) is rotatably connected to the inner wall of the air box (3), the other end of the transmission shaft (22) is connected with the isolation mechanism (2) outside the air box (3), a crank arm (21) is arranged on the transmission shaft (22), and the crank arm (21) is connected with the sliding guide sleeve (18); the gas tank (3) top is equipped with three-phase wire outgoing sleeve pipe (20), be equipped with the contact that matches with slip uide bushing (18) in sleeve pipe (20), gas tank (3) lateral part is equipped with ground bus bar (16) and ground contact (30) with slip uide bushing (18) matching.

2. The gas box of an environmentally friendly gas insulated switchgear according to claim 1, wherein the middle of the pole (10) is provided with a conductive clip (24), and the side of the conductive clip (24) is connected with the support (11) through a flexible connection (25).

3. The gas tank of the environmental-friendly gas insulated switchgear according to claim 2, wherein the conductive clip (24) is provided with an insulating pull rod (26), the insulating pull rod (26) is connected with a corrugated pipe (27), and the corrugated pipe (27) and the gas tank (3) are sealed by a sealing ring.

4. The gas tank of the environment-friendly gas insulated switchgear according to claim 1, wherein the bottom of the pole (10) is connected with a feeder line I (5), a feeder line II (6) and a feeder line III (7) through a pad block II (9), a pad block I (8) is arranged between the feeder line II (6) and the feeder line III (7), and the feeder line I (5), the feeder line II (6) and the feeder line III (7) are connected with a three-phase outlet bushing.

5. An environmental protection gas-insulated switchgear gas tank according to claim 1, characterized in that the guide bar (14) is connected to the support (11) by a guide sleeve (12), and a strap contact grease (13) is provided between the guide bar (14) and the guide sleeve (12).

6. An environmental protection gas insulated switchgear gas tank according to claim 1, characterized in that the explosion-proof relief valve device is provided under the back plate of the gas tank (3).

7. An environmentally friendly gas insulated switchgear gas cabinet according to claim 1, characterized in that the sliding guide sleeve (18) is connected to the guide bar (14) by means of a set screw (23).

8. The gas tank of the environmentally friendly gas insulated switchgear according to claim 1, wherein one end of the transmission shaft (22) is connected to the gas tank (3) through a first bearing seat (28), and the other end is connected to the contact portion of the gas tank (3) through a second bearing seat (29).