CN214153746U

CN214153746U - Unit type SF6 gas insulation ring main unit

Info

Publication number: CN214153746U
Application number: CN202022138624.3U
Authority: CN
Inventors: 侯凯; 贾彪
Original assignee: Shandong Shangjiu Electric Technology Co ltd
Current assignee: Shandong Shangjiu Electric Technology Co ltd
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2021-09-07
Anticipated expiration: 2030-09-26

Abstract

The utility model discloses a unit type SF6 gas insulation ring main unit, which comprises a main body, wherein the main body comprises an outer layer, an inner layer and a buffer tube, a cavity is formed between the outer layer and the inner layer, the buffer tube is fixedly arranged on the top end of the outer layer in a penetrating way, the bottom end of the buffer tube is fixedly connected with a buffering elastic membrane, the top end in the buffer tube is slidably connected with a buffering piston, the top end of the buffering piston extends outside the buffer tube, the top end of the buffering elastic membrane is fixedly connected with a rubber connecting sheet, the top end of the rubber connecting sheet is fixedly connected with a movable rod, and the top end of the movable rod is connected with the buffering piston; through install the movable rod additional between buffering elastic diaphragm and buffering piston, when filling SF gas in to the cavity, drive the protection casing by buffering piston again and remove, the protection casing drives and indicates the directional scale mark of piece, even under buffering piston damages or the leakproofness goes wrong the condition, does not influence the removal of buffering piston yet, has further made things convenient for the staff to master the gaseous condition of SF in the cavity.

Description

Unit type SF6 gas insulation ring main unit

Technical Field

The utility model belongs to the technical field of insulating looped netowrk cabinet, concretely relates to cell type SF6 gas insulation looped netowrk cabinet.

Background

The ring main unit (ringmain unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, the core part of the ring main unit adopts a load switch and a fuse, and the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like, and is widely used in distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like. In order to meet the market demand, the top gas insulation ring is generally insulated by using SF6 sulfur hexafluoride gas.

The content of sulfur hexafluoride of the existing ring main unit extrudes the buffering elastic diaphragm through the sulfur hexafluoride, the buffering elastic diaphragm deforms to compress air in the buffering pipe, the compressed air extrudes the buffering piston, the buffering piston drives the protective cover to point to the scale mark on the outer side of the buffering pipe, and once the buffering piston is damaged or the sealing performance is in problem, a worker cannot know the content of the sulfur hexafluoride in the cavity, so that the insulating performance of the ring main unit is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cell type SF6 gas insulation looped netowrk cabinet to propose the content of current looped netowrk cabinet sulfur hexafluoride among the solution above-mentioned background art, through sulfur hexafluoride extrusion buffering elastic diaphragm, cushion the interior air of elastic diaphragm deformation compression buffer tube, compressed air extrusion buffering piston drives the directional buffer tube outside scale mark of protection casing by buffering piston again, but buffering piston damages or leakproofness goes wrong, the staff will't learn cavity sulfur hexafluoride content, thereby influence the insulating properties's of looped netowrk cabinet problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cell type SF6 gas insulation looped netowrk cabinet, includes, the cabinet body is including skin, inlayer and buffer tube, vacuole formation between skin and the inlayer, the buffer tube is fixed wears to establish on outer top, buffer tube bottom end fixedly connected with buffering elastic diaphragm, top sliding connection has buffering piston in the buffer tube, buffering piston top extends outside at the buffer tube, buffering elastic diaphragm top fixedly connected with rubber connection piece, rubber connection piece top fixedly connected with movable rod, the movable rod top is connected with buffering piston.

Preferably, a limiting ring is arranged between the buffering elastic membrane and the buffering piston, the outer side of the limiting ring is in contact with the inner wall of the buffer tube, a through hole and a through hole which are communicated with the limiting ring are formed in the top end of the limiting ring respectively, the through hole is located in the center of the limiting ring, and the movable rod penetrates through the through hole.

Preferably, the inner wall of the through hole is rotatably connected with a pulley, and one side of the pulley is in contact with the outer surface of the movable rod.

Preferably, the through holes are uniformly distributed around the circle center of the limiting ring.

Preferably, the pulleys are distributed on the inner wall of the through hole at equal intervals.

Preferably, the cavity is filled with SF gas.

Preferably, the cabinet body is internally provided with a load switch and a fuse respectively.

Preferably, the top end of the buffering piston is fixedly connected with a protective cover, and the protective cover is sleeved on the outer side of the buffering tube.

Preferably, the outside of the buffer tube is provided with graduation lines.

Preferably, the two sides of the bottom end of the protective cover are symmetrically provided with indicating sheets, one end of each indicating sheet is provided with a tip part, and the tip part points to the scale mark.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through install the movable rod additional between buffering elastic diaphragm and buffering piston, when filling SF gas in to the cavity, by the gaseous extrusion buffering elastic diaphragm of SF, buffering elastic diaphragm deformation drives rubber connection piece and removes, rubber connection piece passes through the movable rod and drives buffering piston and remove, drive the protection casing by buffering piston again and remove, the protection casing drives the directional scale mark of instruction piece, even under buffering piston damages or the leakproofness problem condition, also do not influence buffering piston's removal, further made things convenient for the staff to master the gaseous condition of SF in the cavity.

(2) Through install the spacing ring additional in the movable rod outside, when the movable rod reciprocated, removed in the through hole at the movable rod, guaranteed that the movable rod when reciprocating, can not control and rock, guarantee that the movable rod drives the buffer piston smoothly and removes, drive the pulley rotation simultaneously, under the effect of pulley, reduced the removal frictional force of movable rod with the through hole, ensured the movable rod smoothness nature that reciprocates.

Drawings

Fig. 1 is a schematic structural view of the insulating ring main unit of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1;

FIG. 3 is an enlarged view of the structure at b in FIG. 1;

FIG. 4 is an enlarged view of the structure at c in FIG. 1;

in the figure: 1. a cabinet body; 11. an outer layer; 12. an inner side; 13. a cavity; 2. a load switch; 3. a fuse; 4. a buffer tube; 41. a protective cover; 43. a cushion piston; 44. a movable rod; 45. a buffer elastic membrane; 46. a rubber connecting sheet; 47. a limiting ring; 48. a through hole; 49. a pulley; 410. a through hole; 411. Scale lines; 412. an indicator sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Combine shown in fig. 1 and fig. 2, a cell type SF6 gas insulation looped netowrk cabinet, include, cabinet body 1 includes outer 11, inlayer 12 and buffer tube 4, vacuole 13 is formed between outer 11 and the inlayer 12, cavity 13 intussuseption is filled with SF6 gas, be equipped with load switch 2 and fuse 3 in the cabinet body 1 respectively, buffer tube 4 is fixed to be worn to establish on outer 11 top, 4 bottom fixedly connected with buffering elastic diaphragm 45 of buffer tube, 4 interior top sliding connection of buffer tube has buffering piston 43, buffering piston 43 top extends outside 4 buffer tubes, buffering elastic diaphragm 45 top fixedly connected with

rubber connection piece

46, 46 top fixedly connected with movable rod 44 of rubber connection piece, the movable rod 44 top is connected with buffering piston 43.

During the use, when filling SF6 gas in to cavity 13, by SF6 gas extrusion buffering elastic diaphragm 45, buffering elastic diaphragm 45 deformation drives rubber connection piece 46 and removes, rubber connection piece 46 drives buffering piston 43 through movable rod 44 and removes, drive protection casing 41 by buffering piston 43 again and remove, protection casing 41 drives the directional scale mark 411 of instruction piece 412, even under buffering piston 43 damaged or the leakproofness goes wrong the condition, also do not influence the removal of buffering piston 43, further made things convenient for the staff to master the gaseous condition of SF6 in the cavity 13.

Referring to fig. 3, a limiting ring 47 is disposed between the elastic buffer membrane 45 and the buffer piston 43, the outer side of the limiting ring 47 contacts the inner wall of the buffer tube 4, a through hole 410 and a through hole 48, which are communicated with the limiting ring 47, are respectively formed at the top end of the limiting ring 47, the through holes 48 are uniformly distributed around the center of the limiting ring 47, the number of the through holes 48 is increased, the air flow efficiency in the buffer tube 4 is improved, the through hole 410 is located at the center of the limiting ring 47, the movable rod 44 penetrates through the through hole 410, a pulley 49 is rotatably connected to the inner wall of the through hole 410, one side of the pulley 49 contacts with the outer surface of the movable rod 44, the pulley 49 is equidistantly distributed on the inner wall of the through hole 410, and under the action of the pulley 49, the moving friction force between the pulley 49 and the through hole 410 is reduced.

When the buffer device is used, when the movable rod 44 moves up and down, the movable rod 44 moves in the through hole 410, so that the movable rod 44 cannot sway left and right when moving up and down, the movable rod 44 is guaranteed to smoothly drive the buffer piston 43 to move, the pulley 49 is driven to rotate, the moving friction force between the movable rod 44 and the through hole 410 is reduced under the action of the pulley 49, and the moving smoothness of the movable rod 44 in moving up and down is guaranteed.

Referring to fig. 1, a protective cover 41 is fixedly connected to the top end of the buffer piston 43, the protective cover 41 is sleeved on the outer side of the buffer tube 4, and the protective cover 41 covers the outer side of the buffer tube 4 to reduce dust from entering the buffer tube 4 and reduce the influence of the dust on the buffer piston 43.

Referring to fig. 4, the outside of the buffer tube 4 is provided with scale marks 411, two sides of the bottom end of the protective cover 41 are symmetrically provided with indicating sheets 412, one end of each indicating sheet 412 is provided with a tip portion, and the tip portion points to the scale marks 411, so that a worker can observe the numerical values of the scale marks 411 conveniently.

The utility model discloses a theory of operation and use flow: by additionally arranging the movable rod 44 between the buffer elastic diaphragm 45 and the buffer piston 43, when SF6 gas is filled into the cavity 13, the buffer elastic diaphragm 45 is extruded by SF6 gas, the buffer elastic diaphragm 45 deforms to drive the rubber connecting piece 46 to move, the rubber connecting piece 46 drives the buffer piston 43 to move through the movable rod 44, then the buffer piston 43 drives the protective cover 41 to move, the protective cover 41 drives the indicating piece 412 to point to the scale mark 411, even if the buffer piston 43 is damaged or the tightness has a problem, the movement of the buffer piston 43 is not influenced, and the working personnel can further conveniently master the SF6 gas condition in the cavity 13; through installing spacing ring 47 additional outside movable rod 44, when movable rod 44 reciprocated, moved in through hole 410 at movable rod 44, guaranteed that movable rod 44 when reciprocating, can not rock about, guarantee that movable rod 44 drives buffer piston 43 and removes smoothly, drive pulley 49 simultaneously and rotate, under pulley 49's effect, reduced the removal frictional force of movable rod 44 with through hole 410, ensured that movable rod 44 reciprocates the smoothness.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a unit type SF6 gas insulation looped netowrk cabinet, includes, cabinet body (1) includes outer layer (11), inlayer (12) and buffer tube (4), vacuole formation (13) between outer layer (11) and inlayer (12), buffer tube (4) are fixed to be worn to establish on outer layer (11) top, its characterized in that: buffer tube (4) bottom fixedly connected with buffering elastic diaphragm (45), top sliding connection has buffering piston (43) in buffer tube (4), buffering piston (43) top extends outside at buffer tube (4), buffering elastic diaphragm (45) top fixedly connected with rubber connection piece (46), rubber connection piece (46) top fixedly connected with movable rod (44), movable rod (44) top is connected with buffering piston (43).

2. The unit type SF6 gas insulated ring main unit as claimed in claim 1, wherein: be equipped with spacing ring (47) between buffering elastic diaphragm (45) and buffering piston (43), spacing ring (47) outside and buffer tube (4) inner wall contact, through hole (410) and through-hole (48) rather than intercommunicating are seted up respectively to spacing ring (47) top, through hole (410) are located spacing ring (47) center department, movable rod (44) run through hole (410).

3. The unit type SF6 gas insulated ring main unit as claimed in claim 2, wherein: the inner wall of the through hole (410) is rotatably connected with a pulley (49), and one side of the pulley (49) is in contact with the outer surface of the movable rod (44).

4. The unit type SF6 gas insulated ring main unit as claimed in claim 2, wherein: the through holes (48) are uniformly distributed around the circle center of the limiting ring (47).

5. The unit type SF6 gas insulated ring main unit as claimed in claim 3, wherein: the pulleys (49) are distributed on the inner wall of the through hole (410) at equal intervals.

6. The unit type SF6 gas insulated ring main unit as claimed in claim 1, wherein: the cavity (13) is filled with SF6 gas.

7. The unit type SF6 gas insulated ring main unit as claimed in claim 1, wherein: the cabinet body (1) is internally provided with a load switch (2) and a fuse (3) respectively.

8. The unit type SF6 gas insulated ring main unit as claimed in claim 1, wherein: the buffer piston (43) top fixedly connected with protection casing (41), protection casing (41) cover is established in the buffer tube (4) outside.

9. The unit type SF6 gas insulated ring main unit as claimed in claim 8, wherein: and scale marks (411) are arranged on the outer side of the buffer tube (4).

10. The unit type SF6 gas insulated ring main unit as claimed in claim 9, wherein: the two sides of the bottom end of the protective cover (41) are symmetrically provided with indicating sheets (412), one end of each indicating sheet (412) is provided with a tip, and the tip points to the scale marks (411).