CN214543151U - Combined force balance structure for GIS equipment - Google Patents

Abstract

The utility model provides a combination power balanced structure for GIS equipment, include: the support frame comprises two front upright columns, two rear upright columns, a longitudinal beam fixed between the front upright columns and the rear upright columns and/or a cross beam fixed between the two front upright columns and the two rear upright columns; the lower barrel is a three-way barrel and comprises a front side flange, a rear side flange and a top flange, the front side flange is fixed on the two front upright posts, the rear side flange is fixed on the two rear upright posts, and/or the top flange is fixed on the cross beam or the longitudinal beam; the upper cylinder body comprises a left flange, a right flange and a bottom flange, and the bottom flange is fixed with the top flange of the lower cylinder body. The lower cylinder body of the utility model omits a bottom flange, has simple structure and low manufacturing cost; the front and rear upright posts and/or the cross beam or the longitudinal beam of the support frame are utilized to realize the fixation with the lower barrel, and a bottom plate on the support frame is omitted, so that the structure of the support frame is simplified, and the manufacturing cost can be reduced.

Description

Combined force balance structure for GIS equipment

Technical Field

The utility model relates to a GIS equipment technical field, concretely relates to combination power balanced structure for GIS equipment.

Background

With the rapid development of national economy and power industry, the power grid scale is increasingly huge, and gas insulated metal enclosed switchgear (GIS for short) is widely adopted in transformer substations in recent years due to the advantages that the operation of the gas insulated metal enclosed switchgear is slightly influenced by external environment, frequent maintenance is not needed, the occupied area is small, and the like. GIS equipmentThe method is characterized in that primary equipment except a transformer in a transformer substation, including a bus, a circuit breaker, a disconnecting switch, a grounding switch, a voltage transformer, a current transformer, a lightning arrester, a cable terminal, an inlet and outlet wire sleeve and the like, are organically combined together through optimized design, and the container is sealed and filled with SF (sulfur hexafluoride)₆Gas to insulate. In practical application, in order to eliminate damage to the GIS equipment caused by expansion and contraction of the bus due to heat, a pressure balance expansion joint needs to be arranged on the bus.

The existing combined balance expansion joint structure is shown in fig. 1 and 2, and comprises an upper four-way cylinder 300 and a lower four-way cylinder 200, wherein the lower four-way cylinder 200 is fixed on a support frame 100 and used for guiding flow of equipment in a string, the upper four-way cylinder 300 is fixed on the lower four-way cylinder 200 and used for guiding flow of branch buses or main buses from the interior of the string, expansion joints 400 are respectively arranged on the left side and the right side of the upper four-way cylinder 300, first flanges 401 and fourth flanges 404 of the two expansion joints 400 are locked by long screws 405, and the long screws 405 freely penetrate through the second flanges 402 and the third flanges 403, so that when one corrugated pipe is compressed, the other corrugated pipe is stretched, and thermal expansion and cold contraction of the buses are absorbed.

The support frame 100 is a frame structure formed by assembling and welding a plurality of H-shaped steels, a bottom plate 101 is fixed at the bottom of the support frame 100, and a bottom flange 201 of the lower cylinder is fixed on the bottom plate 101, so that the lower four-way cylinder 200 is fixed and supported. The front flange 202 and the rear flange 203 of the lower four-way cylinder 200 extend out of the support frame 100 and are respectively used for connecting other cylinders or parts, and the top flange 204 of the lower cylinder is fixedly connected with the bottom flange 304 of the upper cylinder, so that the upper four-way cylinder 300 is fixed and supported. The upper cylinder top flange 303 is used for mounting a live display device, the left flange 301 and the right flange 302 are respectively connected with the telescopic joint 400, wherein the telescopic joint on the left side is a tip telescopic joint, and the telescopic joint on the right side is a middle telescopic joint.

The upper barrel and the lower barrel in the existing combined balance telescopic joint structure are four-way barrels, each barrel is provided with four flanges, the structure is complex, the manufacturing cost is high, especially the lower four-way barrel needs to be specially provided with a bottom flange to realize fixation with a support frame, a fixing bottom plate is needed on the support frame, the structure of the support frame is complex, and the manufacturing cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combined force balanced structure for GIS equipment to the lower barrel of solving among the prior art is the cross-section barrel, needs set up the bottom flange specially and fix and lead to the structure of barrel and support frame more complicated, the higher problem of manufacturing cost down.

In order to achieve the above object, the utility model provides a combination power balance structure for GIS equipment adopts following technical scheme:

a combined force-balancing structure for GIS devices, comprising:

the support frame comprises two front columns, two rear columns and base plates arranged at the bottoms of the front columns and the rear columns, and also comprises longitudinal beams fixed between the front columns and the rear columns and/or cross beams respectively fixed between the two front columns and between the two rear columns;

the lower barrel is fixed on the support frame, the lower barrel is a three-way barrel and comprises a front side flange, a rear side flange and a top flange, the front side flange of the lower barrel is fixedly connected to the two front upright columns, the rear side flange is fixedly connected to the two rear upright columns, and/or the top flange of the lower barrel is fixedly connected to the cross beam or the longitudinal beam;

the upper barrel is fixed on the lower barrel and comprises a left flange, a right flange and a bottom flange, and the bottom flange of the upper barrel is fixedly connected with the top flange of the lower barrel;

the left telescopic joint is fixedly connected with the left flange and comprises a first flange and a second flange at the left end and the right end and a left corrugated pipe fixed between the first flange and the second flange;

the right telescopic joint is fixedly connected with the right flange and comprises a third flange and a fourth flange at the left end and the right end and a right corrugated pipe fixed between the third flange and the fourth flange;

wherein, be connected with short screw rod between first flange and the second flange, between third flange and the fourth flange respectively, be connected with the long screw rod between first flange and the fourth flange, the long screw rod runs through second flange and third flange.

The beneficial effects of the above technical scheme are that: the connection between the left expansion joint and the upper cylinder body, the connection between the right expansion joint and the upper cylinder body, and the arrangement of the short screw and the long screw realize that when one corrugated pipe is compressed, the other corrugated pipe is stretched, so that the expansion caused by heat and the contraction caused by cold of the bus are absorbed, and the basic function of a combined force balance structure is realized; the lower barrel in the utility model is a three-way barrel, which comprises a front flange, a rear flange and a top flange, and the bottom flange is omitted compared with the prior art, so the structure is relatively simple and the manufacturing cost is low; the lower barrel is respectively fixedly connected with the two front columns and the two rear columns of the support frame through the front side flange and the rear side flange, and/or the lower barrel is fixedly connected with the cross beam or the longitudinal beam of the support frame through the top flange, so that the fixed connection between the lower barrel and the support frame can be realized, and a bottom plate on the support frame is omitted compared with the prior art, therefore, the structure of the support frame is simplified, and the manufacturing cost can be reduced.

Furthermore, in order to facilitate the connection between the front flange and the two front columns and the connection between the rear flange and the two rear columns, the front columns are provided with front side faces facing forwards, the distance between the two front columns is smaller than the outer diameter of the front flange, the rear side end faces of the front flanges are attached to the front side faces of the front columns and fixed through bolts, and bolt mounting holes are formed in the front flanges; the rear upright posts are provided with rear side faces facing backwards, the distance between the two rear upright posts is smaller than the outer diameter of the rear side flange, the front side end face of the rear side flange is attached to the rear side faces of the rear upright posts and fixed through bolts, and bolt mounting holes are also formed in the rear side flange.

Furthermore, in order to facilitate the arrangement of the bolt mounting holes, the front side flange and the rear side flange are respectively provided with a connecting hole used for being connected with other cylinders or parts, the connecting holes in the front side flange and the rear side flange are uniformly distributed in a plurality of circles, and the bolt mounting holes in the front side flange and the rear side flange are both provided with a plurality of bolt mounting holes and each bolt mounting hole is located between two adjacent connecting holes.

Furthermore, in order to facilitate the manufacture of the front upright post and the rear upright post and reduce the manufacturing cost, the front upright post and the rear upright post are both made of angle steel, and the front side surface of the front upright post and the rear side surface of the rear upright post are respectively formed by one side plane of the angle steel.

Furthermore, in order to facilitate connection between the upper side flange and the cross beam or the longitudinal beam, the cross beam or the longitudinal beam is provided with an upward upper side face, the distance between the two cross beams is smaller than the outer diameter of the top flange or the distance between the two longitudinal beams is smaller than the outer diameter of the top flange, the lower side end face of the top flange is attached to the upper side face of the cross beam or the longitudinal beam and fixed through bolts, and the top flange is provided with bolt mounting holes.

Furthermore, in order to facilitate the arrangement of the bolt mounting holes, the top flange is provided with a connecting hole which is fixedly connected with the bottom flange of the upper cylinder, the connecting holes in the top flange are uniformly distributed on a plurality of circumferences, and the bolt mounting holes in the top flange are provided with a plurality of bolt mounting holes and each bolt mounting hole is located between two adjacent connecting holes.

Furthermore, in order to disperse stress and improve the use performance of the lower cylinder body, the bottom wall of the lower cylinder body bulges outwards to form a drum shape.

Furthermore, in order to save cost, disperse stress and improve the use performance of the telescopic joint, one of the left side telescopic joint and the right side telescopic joint is an end telescopic joint, the other one of the left side telescopic joint and the right side telescopic joint is an intermediate telescopic joint, the length of the end telescopic joint is smaller than that of the intermediate telescopic joint, the end telescopic joint comprises a sealing plate, and the sealing plate is a ball panel which bulges outwards.

Furthermore, for the convenience of supporting the movement of the end telescopic joint, the top of the support frame is fixed with a guide rail with the length extending along the left-right direction, the guide rail is provided with a U-shaped groove with a groove opening arranged towards the end telescopic joint, the U-shaped groove comprises a lower groove wall, a support sliding plate is fixedly connected to the end telescopic joint, and the support sliding plate is matched with the lower groove wall sliding support of the U-shaped groove.

Furthermore, in order to simplify the structure of the upper cylinder body, reduce the manufacturing cost, disperse the stress and improve the service performance of the upper cylinder body, the upper cylinder body is a three-way cylinder body, and the top wall of the upper cylinder body bulges outwards to form a drum shape.

Drawings

FIG. 1 is a front view of a prior art composite balance telescopic joint structure;

FIG. 2 is a perspective view of a prior art combined balanced expansion joint;

in the figure: 100-a support frame; 101-a base plate; 200-lower four-way cylinder; 201-lower cylinder bottom flange; 202-front flange; 203-rear flange; 204-lower cylinder top flange; 300-upper four-way cylinder; 301-left flange; 302-right flange; 303-upper barrel top flange; 304-upper barrel bottom flange; 400-expansion joint; 401-a first flange; 402-a second flange; 403-a third flange; 404-a fourth flange; 405-a long screw;

fig. 3 is a front view of the combined force balance structure for the GIS device according to the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a side view of the combined force balance structure for GIS equipment according to the present invention;

fig. 6 is an enlarged view at B in fig. 5.

In the figure: 1-a support frame; 11-a front pillar; 12-rear upright post; 13-roof rail; 14-a top cross beam; 15-bottom stringer; 16-a bottom cross beam; 2-lower cylinder body; 21-a front flange; 22-rear flange; 23-a top flange; 24-bolt mounting holes; 25-connecting holes; 3, mounting the cylinder; 31-left flange; 32-right flange; 33-bottom flange; 4-left expansion joint; 41-a first flange; 42-a second flange; 43-left short screw; 44-left bellows; 5-right expansion joint; 51-a third flange; 52-a fourth flange; 53-short right screw; 54-right bellows; 55-closing plate; 6-long screw rod; 7-supporting the sliding plate; 71-a support plate; 72-a connecting plate; 73-upper sliding resistant plate; 8-a guide rail; 81-lower durable slide plate; 9-basin insulator.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses an embodiment of well combination power balanced structure that is used for GIS equipment is shown in fig. 3 and fig. 5, including support frame 1, lower barrel 2, go up barrel 3, left side telescopic joint 4, right side telescopic joint 5.

The support frame 1 includes two front columns 11, two rear columns 12 and base plates (not shown) disposed at the bottoms of the front columns 11 and the rear columns 12, and the front columns 11 and the rear columns 12 are made of angle steel. The support frame 1 further comprises bottom cross beams 16 which are located at the bottom and fixed between the two rear upright posts 12 and between the two front upright posts 11 respectively, the support frame 1 further comprises bottom longitudinal beams 15 which are located at the bottom and fixed between the front upright posts 11 and the rear upright posts 12 respectively, the bottom cross beams 16 and the bottom longitudinal beams 15 are made of angle steel and located on the inner sides of the front upright posts 11 and the rear upright posts 12 respectively. The support frame 1 further comprises a top longitudinal beam 13 which is positioned at the top and is respectively fixed between the front upright post 11 and the rear upright post 12, and the top longitudinal beam 13 is also made of angle steel and is positioned at the inner side of the front upright post 11 and the inner side of the rear upright post 12. The support frame 1 further comprises a top cross beam 14 located at the top and respectively fixed between the two rear uprights 12 and between the two front uprights 11, wherein the top cross beam 14 is also made of angle steel and located at the outer sides of the front uprights 11 and the rear uprights 12, as shown in fig. 6.

Referring to fig. 3, 5 and 6, the lower barrel 2 is a three-way barrel, the bottom wall of the lower barrel 2 bulges outwards to form a drum shape, the lower barrel 2 includes a front flange 21, a rear flange 22 and a top flange 23, the front flange 21 is fixedly connected to the two front pillars 11, the rear flange 22 is fixedly connected to the two rear pillars 12, and the top flange 23 is fixedly connected to the two top longitudinal beams 13. The upper cylinder 3 is also a three-way cylinder, the top wall of the upper cylinder 3 bulges outwards to form a drum shape, and the upper cylinder 3 comprises a left flange 31, a right flange 32 and a bottom flange 33.

Specifically, since the front and rear pillars are both angle steel, the rear pillar 12 has a rear side surface facing rearward, which is formed by a side plane of the angle steel. As shown in fig. 3, the distance between the two rear pillars 12 is smaller than the outer diameter of the rear flange 22, and as shown in fig. 5 and 6, the rear flange 22 is located at the rear side of the two rear pillars 12, and the front side end surface of the rear flange 22 is fitted to the rear side surface of the rear pillar 12 and fixed by bolts, and for this purpose, bolt mounting holes 24 are provided in the rear flange 22. The rear flange 22 is further provided with a plurality of connecting holes 25 for connecting with other cylinders, the connecting holes 25 on the rear flange 22 are uniformly distributed on the circumference, the number of the bolt mounting holes 24 on the rear flange 22 is six, the number of the bolt mounting holes is three on the left and the right, and each bolt mounting hole 24 is located between two adjacent connecting holes 25.

Likewise, the front pillar 11 has a forward facing front side surface formed by one side plane of the angle iron. The distance between the two front pillars 11 is smaller than the outer diameter of the front flange 21, and as shown in fig. 5, the front flange 21 is located at the front side of the two front pillars 11, and the rear end face of the front flange 21 is attached to the front side faces of the two front pillars 11 and fixed by bolts, so bolt mounting holes (not shown in the figure) are also provided in the front flange 21. Meanwhile, the front side flange 21 is further provided with a plurality of connecting holes (not shown in the figure) for connecting with the basin-type insulator 9, the connecting holes in the front side flange 21 are uniformly distributed on the circumference, the number of the bolt mounting holes in the front side flange 21 is six, the number of the bolt mounting holes is three, and each bolt mounting hole is located between two adjacent connecting holes.

As shown in fig. 3 and 6, since the roof side rail 13 is an angle steel, the roof side rail 13 has an upward upper side surface formed by one side plane of the angle steel. The distance between the two top longitudinal beams 13 is smaller than the outer diameter of the top flange 23, the top flange 23 is located on the upper sides of the two top longitudinal beams 13, the lower side end face of the top flange 23 is attached to the upper side face of the top longitudinal beam 13 and fixed through bolts, and therefore bolt mounting holes (not shown in the figure) are formed in the top flange 23. Similarly, the top flange 23 is provided with a plurality of connecting holes (not shown in the figure) for fixedly connecting with the bottom flange 33 of the upper barrel 3, the connecting holes on the top flange 23 are uniformly distributed on the circumference, and the bolt mounting holes on the top flange 23 are a plurality of bolt mounting holes, and each bolt mounting hole is located between two adjacent connecting holes.

As shown in fig. 3, the bottom flange 33 of the upper cylinder 3 is fixedly connected with the top flange 23 of the lower cylinder 2, so as to fix and support the upper cylinder 3. The left expansion joint 4 is fixedly connected with a left flange 31 of the upper barrel 3, a basin-type insulator is clamped in the middle of the left expansion joint 4, the left expansion joint 4 comprises a first flange 41 and a second flange 42 at the left end and the right end, and a left corrugated pipe 44 fixed between the first flange 41 and the second flange 42, and a left short screw 43 is connected between the first flange 41 and the second flange 42. The right telescopic joint 5 is fixedly connected with a right flange 32 of the upper barrel 3, the right telescopic joint 5 comprises a third flange 51 and a fourth flange 52 at the left end and the right end, and a right corrugated pipe 54 fixed between the third flange 51 and the fourth flange 52, and a right short screw 53 is connected between the third flange 51 and the fourth flange 52. The long screw 6 is connected between the first flange 41 and the fourth flange 52, the long screw 6 freely penetrates through the second flange 42 and the third flange 51, when one corrugated pipe is compressed integrally, the other corrugated pipe is stretched, elastic force generated by deformation of the expansion joint can balance air pressure, and thermal expansion and cold contraction deformation of the cylinder body is absorbed.

In this embodiment, left side telescopic joint 4 is middle telescopic joint, and right side telescopic joint 5 is the end telescopic joint, also promptly right side telescopic joint 5 no longer connects other parts, and right side telescopic joint 5 includes the shrouding 55 of right-hand member, and shrouding 55 is the spherical surface board of outwards bulging, can disperse stress like this, improves performance.

The right telescopic joint 5 is shorter than the left telescopic joint 4 in length, and the right telescopic joint 5 is a tip telescopic joint, so that the right telescopic joint is shorter in length in practical application. Meanwhile, in order to further reduce the manufacturing cost, the flanges at the two ends of the left telescopic joint 4 and the right telescopic joint 5 and the sealing plate 55 are made of carbon steel, and the middle corrugated pipe is still made of stainless steel. The two telescopic joints are omitted, connecting pipes are omitted, welding seams are reduced, and therefore the risk points of air leakage are reduced while the welding workload is reduced. Meanwhile, the seal plate 55 is directly welded and fixed, the structure is simple, standard parts such as a seal ring and a bolt are required to be configured when the bolt is connected, the material cost is reduced, and the assembly process is simplified. In addition, the lower cylinder body 2 and the upper cylinder body 3 are both formed by casting aluminum, and compared with a welded four-way cylinder body in the original structure, the structure is simpler, and the cost is lower.

In addition, as shown in fig. 3, 4, 5 and 6, a guide rail 8 with a length extending in the left-right direction is fixed on the top cross beam 14, one right-angle side of the top cross beam 14 is fixedly connected with the front upright post 11 or the rear upright post 12, the other right-angle side extends outwards, and the guide rail 8 is fixed on the one right-angle side extending outwards and located above the top cross beam 14. The guide rail 8 is made of U-shaped channel steel, and is provided with a U-shaped groove with a notch arranged towards the end expansion joint, the U-shaped groove comprises a lower groove wall, and a lower sliding-resistant plate 81 is fixed on the lower groove wall.

Fixedly connected with support slide on the end telescopic joint, support slide and bear slide 81 sliding support cooperation on the lower cell wall, it is specific, as shown in fig. 4 and fig. 6, support slide including fixing backup pad 71 on fourth flange 52, fix the connecting plate 72 in backup pad 71 bottom, connecting plate 72 adopts the angle steel, its right-angle side and backup pad 71 fixed connection, be fixed with on the bottom surface of another right-angle side and bear slide 73, it bears contact and sliding fit with lower resistant slide 81 to bear slide 73, can support the removal of end telescopic joint.

The guide rail 8 is made of angle steel, so that the cost is reduced, and meanwhile, the whole support frame 1 is also made of angle steel, so that the manufacturing cost and the whole weight are saved.

The utility model discloses in left side telescopic joint, right side telescopic joint and last being connected between the barrel and the setting of short screw rod and long screw rod, when having realized a bellows compression, another bellows is tensile to absorb the expend with heat and contract with cold of generating line, realize the foundation function of combined force balanced structure.

The utility model changes the lower cylinder into a three-way cylinder, which comprises a front flange, a rear flange and a top flange, and saves a bottom flange compared with the prior art, thereby having relatively simple structure and low manufacturing cost; and the front and rear upright posts and the top longitudinal beam of the support frame are ingeniously utilized to realize the fixed connection between the lower barrel and the support frame, and compared with the prior art, a bottom plate on the support frame is omitted, so that the structure of the support frame is simplified, and the manufacturing cost can be reduced.

Additionally, the utility model discloses also changing into the tee bend barrel with last barrel, saved the top flange, the structure obtains simplifying, and manufacturing cost reduces, and original electrified display device can install in other suitable positions.

In other embodiments of the combined force-balancing structure for GIS equipment, the upper cylinder may still be a four-way cylinder.

In other embodiments of the combined force balance structure for the GIS equipment, the guide rail may also be H-shaped steel, and the support sliding plate may be a support plate plus a sliding-resistant plate.

In other embodiments of the combined force balancing structure for GIS equipment, the top of the support frame may not fix the guide rail, nor the support slide plate is provided at this time.

In other embodiments of the combined force balancing structure for GIS devices, the left expansion joint may be a tip expansion joint and the right expansion joint may be a middle expansion joint.

In other embodiments of the combined force-balancing structure for GIS devices, the lengths of the tip and intermediate telescoping sections may be the same.

In other embodiments of the combined force-balancing structure for GIS equipment, the closure plate of the tip expansion joint may also be a flat plate.

In other embodiments of the combined force balancing structure for GIS devices, both the left and right expansion joints may be intermediate expansion joints.

In other embodiments of the combined force-balancing structure for GIS devices, the bottom wall of the lower cylinder may not be drum-shaped, but normally cylindrical.

In other embodiments of the combined force balancing structure for GIS equipment, the bolt mounting holes on the top flange may not be located between two adjacent connecting holes, but the region where the plurality of bolt mounting holes are provided is no longer provided with a connecting hole.

In other embodiments of the combined force-balancing structure for GIS equipment, the top flange may also be connected to the top beam.

In other embodiments of the combined force balancing structure for GIS equipment, the top flange and the top cross beam or the top longitudinal beam may be welded and fixed.

In other embodiments of the combined force balancing structure for GIS equipment, the front and rear uprights may also be H-section steel or rectangular section steel.

In other embodiments of the combined force balancing structure for GIS equipment, the bolt mounting holes on the front side flange and the rear side flange may not be located between two adjacent connecting holes, but the region where the plurality of bolt mounting holes are provided is not provided with a connecting hole.

In other embodiments of the combined force balancing structure for the GIS device, the front flange and the front pillar may be welded together, and the rear flange and the rear pillar may be welded together.

In other embodiments of the combined force balancing structure for GIS equipment, the bottom cross beam and the bottom longitudinal beam may not be provided, and the bottom ends of the four columns may be fixed on one bottom plate.

In other embodiments of the combined force-compensating structure for GIS systems, the roof flange can also be connected fixedly to both the roof longitudinal beams and the roof transverse beams.

In other embodiments of the combined force-balancing structure for GIS installations, it is possible to provide only the top transverse beams or only the top longitudinal beams without the provision of guide rails.

In other embodiments of the combined force balance structure for the GIS device, only the front flange may be connected to the front pillar, and the rear flange may be connected to the rear pillar, so as to fix the lower cylinder to the support frame, or only the top flange may be connected to the top longitudinal beam or the top cross beam, so as to fix the lower cylinder to the support frame.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A combined force balancing structure for a GIS device, comprising:

the support frame comprises two front columns, two rear columns and base plates arranged at the bottoms of the front columns and the rear columns, and also comprises longitudinal beams fixed between the front columns and the rear columns and/or cross beams respectively fixed between the two front columns and between the two rear columns;

the lower barrel is fixed on the support frame, the lower barrel is a three-way barrel and comprises a front side flange, a rear side flange and a top flange, the front side flange of the lower barrel is fixedly connected to the two front upright columns, the rear side flange is fixedly connected to the two rear upright columns, and/or the top flange of the lower barrel is fixedly connected to the cross beam or the longitudinal beam;

the upper barrel is fixed on the lower barrel and comprises a left flange, a right flange and a bottom flange, and the bottom flange of the upper barrel is fixedly connected with the top flange of the lower barrel;

the left telescopic joint is fixedly connected with the left flange and comprises a first flange and a second flange at the left end and the right end and a left corrugated pipe fixed between the first flange and the second flange;

the right telescopic joint is fixedly connected with the right flange and comprises a third flange and a fourth flange at the left end and the right end and a right corrugated pipe fixed between the third flange and the fourth flange;

wherein, be connected with short screw rod between first flange and the second flange, between third flange and the fourth flange respectively, be connected with the long screw rod between first flange and the fourth flange, the long screw rod runs through second flange and third flange.

2. The combined force balance structure for the GIS equipment according to claim 1, wherein the front columns have front side faces facing forward, the distance between the two front columns is smaller than the outer diameter of the front side flange, the rear side end face of the front side flange is attached to the front side faces of the front columns and fixed through bolts, and bolt mounting holes are formed in the front side flange; the rear upright posts are provided with rear side faces facing backwards, the distance between the two rear upright posts is smaller than the outer diameter of the rear side flange, the front side end face of the rear side flange is attached to the rear side faces of the rear upright posts and fixed through bolts, and bolt mounting holes are also formed in the rear side flange.

3. The combined force balancing structure for the GIS equipment according to claim 2, wherein the front flange and the rear flange are respectively provided with a plurality of connecting holes for connecting with other cylinders or components, the connecting holes on the front flange and the rear flange are uniformly distributed and circumferentially distributed, the bolt mounting holes on the front flange and the rear flange are respectively provided with a plurality of bolt mounting holes, and each bolt mounting hole is located between two adjacent connecting holes.

4. The combined force balancing structure for the GIS equipment of claim 2 or 3, wherein the front pillar and the rear pillar are made of angle steel, and the front side surface of the front pillar and the rear side surface of the rear pillar are respectively formed by a side plane of the angle steel.

5. The combined force balancing structure for the GIS equipment according to any one of claims 1 to 3, wherein the cross beams or the longitudinal beams have upward upper side surfaces, the distance between the two cross beams is smaller than the outer diameter of the top flange or the distance between the two longitudinal beams is smaller than the outer diameter of the top flange, the lower side end surfaces of the top flanges are attached to the upper side surfaces of the cross beams or the longitudinal beams and fixed through bolts, and bolt mounting holes are formed in the top flanges.

6. The combined force balancing structure for the GIS device according to claim 5, wherein the top flange is provided with a plurality of connecting holes for fixedly connecting with the bottom flange of the upper cylinder, the connecting holes on the top flange are uniformly distributed in a circumferential direction, the bolt mounting holes on the top flange are a plurality, and each bolt mounting hole is located between two adjacent connecting holes.

7. The combined force balance structure for the GIS device according to any one of claims 1 to 3, wherein the bottom wall of the lower cylinder is bulged outwards in a drum shape.

8. The combined force balancing structure for the GIS device according to any one of claims 1 to 3, wherein one of the left-side expansion joint and the right-side expansion joint is a tip expansion joint, the other one of the left-side expansion joint and the right-side expansion joint is an intermediate expansion joint, the length of the tip expansion joint is smaller than that of the intermediate expansion joint, the tip expansion joint comprises a sealing plate, and the sealing plate is an outwardly bulged spherical surface plate.

9. The combined force balancing structure for the GIS device of claim 8, wherein the top of the supporting frame is fixed with a guide rail having a length extending in a left-right direction, the guide rail has a U-shaped groove with a notch facing the end expansion joint, the U-shaped groove includes a lower groove wall, a supporting sliding plate is fixedly connected to the end expansion joint, and the supporting sliding plate is slidably supported and matched with the lower groove wall of the U-shaped groove.

10. The combined force balancing structure for the GIS device according to any one of claims 1 to 3, wherein the upper cylinder is a three-way cylinder, and the top wall of the upper cylinder bulges outwards in a drum shape.

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