CN216390184U

CN216390184U - Gas-insulated enclosed switchgear and support device therefor

Info

Publication number: CN216390184U
Application number: CN202122494812.4U
Authority: CN
Inventors: 张娟; 魏素华; 陈晨
Original assignee: Siemens High Voltage Switchgear Co Ltd
Current assignee: Siemens High Voltage Switchgear Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-26
Anticipated expiration: 2031-10-15

Abstract

The present invention provides a gas insulated enclosed switchgear and a supporting device thereof, the supporting device comprising: the bearing part is movably arranged on the support part relative to the support part in the axial direction of the bus tube; the limiting assembly comprises a threaded fastener, a first locking nut and a second locking nut, the threaded fastener comprises a limiting head and a screw rod, the screw rod sequentially penetrates through the supporting piece and the bearing piece, the first locking nut and the second locking nut are sleeved on the screw rod, the bearing piece and the supporting piece are located between the second locking nut and the limiting head, and the first locking nut and the second locking nut are locked with each other. The supporting device enables the bus bar barrel connected with the bearing piece to release internal force generated by thermal expansion through moving in the axial direction of the bus bar barrel when the bus bar barrel is influenced by the internal force of the thermal expansion through the bearing piece moving in the axial direction of the bus bar barrel.

Description

Gas-insulated enclosed switchgear and support device therefor

Technical Field

The embodiment of the application relates to the field of mechanical equipment, in particular to gas-insulated closed switch equipment and a supporting device thereof.

Background

In the prior art, an axial compensator is generally used for releasing internal force generated by thermal expansion so as to perform compensation adjustment, while in the arrangement of general GIS equipment, the position of the compensator is more, and the price of the compensator is high, so that the installation cost of the GIS equipment is greatly increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, embodiments of the present application provide a gas insulated switchgear and a supporting apparatus thereof to at least partially solve the above problems.

According to a first aspect of embodiments of the present application, there is provided a supporting device of a gas-insulated enclosed switchgear, comprising: a support member; the bearing piece is fixedly connected with the bus tube of the gas insulated enclosed switchgear through the bearing piece, and the bearing piece is movably arranged on the support piece in the axial direction of the bus tube relative to the support piece; and the limiting assembly comprises a threaded fastener, a first locking nut and a second locking nut, the threaded fastener comprises a limiting head and a screw rod, the screw rod sequentially penetrates through the supporting piece and the bearing piece, the first locking nut and the second locking nut are sleeved on the screw rod, the bearing piece and the supporting piece are positioned between the second locking nut and the limiting head, and the first locking nut and the second locking nut are mutually locked.

Optionally, the support member is provided with an avoiding hole for avoiding the screw rod, and the screw rod passes through the avoiding hole and can move in the avoiding hole.

Optionally, the support device further comprises a first friction reducing arrangement disposed between the load bearing member and the support member to reduce resistance to movement of the load bearing member relative to the support member.

Optionally, the support device further comprises a second friction reducing arrangement disposed between the stop head and the support to reduce resistance to movement of the threaded fastener relative to the support.

Optionally, the second friction reducing structure is fixedly connected to the support by fastening bolts.

Optionally, the support device further includes a base plate, the base plate is disposed between the limiting head and the support piece, the screw penetrates through the base plate, the length of the base plate in the axial direction of the bus bar barrel is greater than the length of the avoiding hole in the axial direction of the bus bar barrel, and the second friction reducing structure is disposed between the base plate and the support piece.

Optionally, the carrier comprises: the transverse plate is movably arranged on the supporting piece; and the vertical plate is fixedly connected to the transverse plate, is mutually vertical to the transverse plate, and is fixedly connected with the bus tube.

Optionally, an arc-shaped bearing surface is arranged on the vertical plate, and the shape of at least part of the arc-shaped bearing surface is matched with the shape of at least part of the outer peripheral surface of the bus tube.

Optionally, the carrier further comprises a reinforcement plate connected between the vertical plate and the horizontal plate.

According to a second aspect of the embodiments of the present application, there is provided a gas insulated switchgear characterized in that it includes a bus bar drum and the above-mentioned supporting device, the supporting device is connected with the bus bar drum to support the bus bar drum.

According to an embodiment of the present application, there is provided a supporting device of a gas insulated enclosed switchgear, the supporting device including: a support member; the bearing piece is fixedly connected with the bus tube of the gas insulated enclosed switchgear through the bearing piece, and the bearing piece is movably arranged on the support piece in the axial direction of the bus tube relative to the support piece; and the limiting assembly comprises a threaded fastener, a first locking nut and a second locking nut, the threaded fastener comprises a limiting head and a screw rod, the screw rod sequentially penetrates through the supporting piece and the bearing piece, the first locking nut and the second locking nut are sleeved on the screw rod, the bearing piece and the supporting piece are positioned between the second locking nut and the limiting head, and the first locking nut and the second locking nut are mutually locked. The strutting arrangement in this embodiment is through holding the movable setting in support piece of the axial of carrier relative support piece at a generating line section of thick bamboo for when receiving the internal force influence of thermal expansion, can be through moving in the axial of a generating line section of thick bamboo with holding a generating line section of thick bamboo that is connected, thereby release the internal force that thermal expansion produced, and strutting arrangement simple structure in this embodiment, simple to operate, and the part low price that just uses practices thrift the cost.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application. Wherein the content of the first and second substances,

fig. 1 is a schematic view of an application scenario of a supporting device of a gas insulated switchgear according to the present invention;

fig. 2 is a schematic structural view of a supporting device of a gas insulated enclosed switchgear of the present invention;

fig. 3 is a sectional view at I of a supporting device of a gas insulated switchgear of the present invention.

Description of reference numerals:

10. a support member;

11. avoiding holes;

20. a carrier;

21. a vertical plate;

22. a transverse plate;

23. a reinforcing plate;

31. threaded fastener

32. A first lock nut;

33. a second lock nut;

41. a first friction reducing structure;

42. a second friction reducing structure;

50. a backing plate.

Detailed Description

In order to more clearly understand the technical features, objects and effects of the embodiments of the present application, specific embodiments of the present application will be described with reference to the accompanying drawings.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, for simplicity and clarity of understanding, elements having the same structure or function in some of the figures may be shown only schematically or only schematically.

Before describing the structure of the test apparatus according to the embodiment of the present application, a brief description will be given of the supporting apparatus of the gas insulated switchgear for easy understanding with reference to fig. 1.

Fig. 1 is a schematic view of an application scenario of a supporting device of a gas insulated switchgear according to the present invention, wherein a supporting frame for a gas insulated switchgear (also called GIS device) is shown, and the supporting device in this embodiment is disposed at one end of the supporting frame. GIS equipment may typically include circuit breakers, current transformers, grounding switches, disconnectors, busbars, and the like, the busbars including a busbar cartridge and wires disposed within the busbar cartridge. This support frame then is used for supporting GIS equipment and a generating line section of thick bamboo, because support GIS equipment and a generating line section of thick bamboo can produce the thermal expansion after ambient temperature risees and equipment circular telegram, the thermal expansion can lead to producing great internal force and moment of flexure in GIS equipment and support frame thereof, the internal force and the moment of flexure that produce from this can lead to the fact the damage to GIS equipment and support frame thereof, consequently, this embodiment provides a gas insulation closed switchgear's strutting arrangement, this strutting arrangement can be at generating line section of thick bamboo axial extension or when shortening adaptability remove, thereby reach the effect of the internal force that the release thermal expansion produced.

Fig. 2 is a schematic structural diagram of a supporting device of a gas insulated switchgear of the present invention, the supporting device of the gas insulated switchgear includes a supporting member 10, a bearing member 20 and a limiting assembly, the bearing member 20 is used for fixedly connecting with a bus bar of the gas insulated switchgear, the bearing member 20 is movably disposed on the supporting member 10 in an axial direction of the bus bar relative to the supporting member 10; the limiting assembly comprises a threaded fastener 31, a first locking nut 32 and a second locking nut 33, the threaded fastener 31 comprises a limiting head and a screw rod, the screw rod sequentially penetrates through the supporting piece 10 and the bearing piece 20, the first locking nut 32 and the second locking nut 33 are sleeved on the screw rod, the bearing piece 20 and the supporting piece 10 are located between the second locking nut 33 and the limiting head, and the first locking nut 32 and the second locking nut 33 are locked with each other.

The support device in this embodiment is through carrying a thing 20 and gas insulated switchgear's a generating line section of thick bamboo fixed connection, and it sets up in support piece 10 to carry thing 20 and to support piece 10 movably in the axial of a generating line section of thick bamboo, thereby realized that gas insulated switchgear and a generating line section of thick bamboo can move at a generating line section of thick bamboo axial, can release gas insulated switchgear and a generating line section of thick bamboo because of the internal force that thermal expansion produced through gas insulated switchgear and a generating line section of thick bamboo axial removal of a generating line section of thick bamboo, avoid gas insulated switchgear and a generating line section of thick bamboo because of the equipment damage that the internal force of thermal expansion leads to.

The supporting device in the embodiment realizes the supporting of the bus bar cylinder and the function of releasing the internal force of the gas insulated enclosed switchgear and the bus bar cylinder thereof, which is generated by the thermal expansion, through the mutual matching of the supporting piece 10, the bearing piece 20 and the limiting component.

And first lock nut 32 and second lock nut 33 cooperation and locking each other have guaranteed also can ensure not to loosen and take off under the condition that vibration exists at long-time use, service environment to realize bearing the reliable spacing of thing 20, thereby guaranteed the reliability to support such as a generating line section of thick bamboo.

The structure of the through pipe fixing device is described in detail below with reference to the accompanying drawings:

as shown in fig. 2, the supporting member 10 is used for being fixedly connected to a supporting frame of the gas insulated switchgear, and forms a support below the bearing member 20. The support 10 may be a hot-dip galvanized steel sheet and the sheet may be rectangular in shape. Currently, the material shape and the like may be other materials and shapes as long as the carrier 20 can be reliably supported. The support member 10 may be connected to the support frame by bolts, welding, pins, or other fastening means, which are more convenient for installation and removal.

The carrier member 20 is fixedly connected to a bus bar of the gas insulated switchgear, and the carrier member 20 is movably disposed on the support member 10 in an axial direction of the bus bar with respect to the support member 10. Therefore, the bus tube can be supported, and can move along with the axial extension or shortening of the bus tube, so that the internal stress of the bus tube, GIS equipment and the like can be adapted.

The bearing member 20 may include a horizontal plate 22 and a vertical plate 21, the horizontal plate 22 is movably disposed on the supporting member 10, and the horizontal plate 22 may be a rectangular hot-dip galvanized steel plate and may be connected to the supporting member 10 by bolts; the vertical plate 21 is fixedly connected to the horizontal plate 22 by welding, pin connection or other fixed connection methods, the vertical plate 21 and the horizontal plate 22 are perpendicular to each other, and the upper side of the vertical plate 21 is fixedly connected to the bus tube. The bearing part 20 is connected with the supporting part 10 through the transverse plate 22, so that the area of connection with the supporting part 10 is increased, the pressure at the position where the supporting part 10 supports the bearing part 20 is reduced, and the damage to the supporting part 10 caused by overlarge pressure at the supporting position is avoided.

Alternatively, the surface of the vertical plate 21 connected to the bus bar barrel may be provided with an arc-shaped bearing surface, and the shape of at least part of the arc-shaped bearing surface is matched with the shape of at least part of the outer peripheral surface of the bus bar barrel. The vertical plate 21 is in the shape of a circular arc corresponding to the bus bar cylinder on the side connected with the bus bar cylinder, and is more fit with the appearance of the bus bar cylinder, so that the connection with the bus bar cylinder is more tight and stable. In order to make riser 21 more firm with being connected of a generating line section of thick bamboo, can set up the screw hole in riser 21's the position that is close to the arc loading end, the axial direction of screw hole is unanimous with the axial direction of a generating line section of thick bamboo, uses the long screw to pass the screw hole and is connected with a generating line section of thick bamboo for a generating line section of thick bamboo can not take place to remove for the arc loading end, thereby makes a generating line section of thick bamboo be connected more firm with riser 21.

Optionally, the carrier 20 may further include a reinforcing plate 23, and the reinforcing plate 23 is connected between the vertical plate 21 and the horizontal plate 22. The reinforcing plate 23 can be a steel plate in a shape of a right triangle, and is perpendicular to the vertical plate 21 and the transverse plate 22, and the right-angle sides of the reinforcing plate are respectively connected with the vertical plate 21 and the transverse plate 22 and can be fixed in a welding mode. The reinforcing plate 23 is supported by the opposite plate 21 and the horizontal plate 22, so that the connection between the horizontal plate 22 and the vertical plate 21 is more stable, and the problem that the vertical plate 21 is inclined and deformed relative to the horizontal plate 22 when the bearing part 20 is subjected to a force in the length direction of the bus bar barrel is avoided.

The limiting assembly can comprise a threaded fastener 31, a first locking nut 32 and a second locking nut 33, the threaded fastener 31 comprises a limiting head and a screw rod, the screw rod sequentially penetrates through the supporting piece 10 and the bearing piece 20, the first locking nut 32 and the second locking nut 33 are sleeved on the screw rod, the bearing piece 20 and the supporting piece 10 are located between the second locking nut 33 and the limiting head, and the first locking nut 32 and the second locking nut 33 are locked with each other. The limiting assembly fixes the supporting member 10 and the bearing member 20 through double nuts, so that the connection between the supporting member 10 and the bearing member 20 is more stable.

In order to more clearly show the structure of the supporting device of the gas-insulated enclosed switchgear, fig. 3 is formed by cutting the supporting device of the gas-insulated enclosed switchgear from a position I of fig. 2, and fig. 3 is a sectional view at I of the supporting device of the gas-insulated enclosed switchgear of the present invention.

Optionally, the supporting device may further include a first friction reducing structure 41, the first friction reducing structure 41 is disposed between the carrier 20 and the support 10, the first friction reducing structure 41 may be fixedly connected with the carrier 20, and the connection may be fixed by welding. The first friction reducing structure 41 may be a stainless steel plate having a low coefficient of friction, and by providing the first friction reducing structure 41 between the carrier element 20 and the support element 10, a reduction of the resistance of the carrier element 20 when moving relative to the support element 10 is achieved. At the same time, by providing the first friction reducing structures 41, the play between the carrier 20 and the support 10 can be eliminated, so that the connection between the carrier 20 and the support 10 is tighter.

Optionally, the supporting device may further include a second friction reducing structure 42, the second friction reducing structure 42 is disposed between the limiting head and the supporting member 10, and the second friction reducing structure 42 may be fixedly connected to the supporting member 10 by fastening bolts. Similarly, the second friction reducing structure 42 may be a stainless steel plate having a low coefficient of friction, and by providing the second friction reducing structure 42 between the threaded fastener 31 and the support 10, a reduction in the resistance of the threaded fastener 31 to movement relative to the support 10 is achieved. Similarly, by providing the second friction reducing structure 42, the gap between the threaded fastener 31 and the support 10 can be eliminated, resulting in a tighter connection between the threaded fastener 31 and the support 10.

Optionally, the support 10 may be provided with an avoiding hole 11 for avoiding the screw, and the screw passes through the avoiding hole 11 and is movable in the avoiding hole 11. The bearing part 20 is connected with the supporting part 10 through a bolt, when the gas insulated enclosed switchgear and the bus bar barrel thereof generate thermal expansion, the bearing part 20 drives the bus bar barrel to move through the movement of the screw rod in the avoiding hole 11, so that the internal force generated by the thermal expansion of the bus bar barrel is released. The size of the avoiding hole 11 limits the moving range of the bearing part 20, so that the moving position of the gas-insulated closed type switch device and the bus bar barrel thereof is limited, the moving range of the gas-insulated closed type switch device and the bus bar barrel thereof is prevented from being too large under the condition that the gas-insulated closed type switch device and the bus bar barrel thereof can release internal force in the phenomenon of thermal expansion, and the operation safety of the gas-insulated closed type switch device is ensured.

Optionally, the supporting device may further include a backing plate 50, the backing plate 50 is disposed between the stopper and the support 10, the screw rod penetrates through the backing plate 50, the length of the backing plate 50 in the axial direction of the bus bar is greater than the length of the avoiding hole 11 in the axial direction of the bus bar, and the second friction reducing structure 42 is disposed between the backing plate 50 and the support 10. The backing plate 50 may be a galvanized steel sheet, and the shape of the sheet may be a rectangular sheet, a circular sheet, or another shape of sheet. When the support member 10 is required to be provided with the large avoiding hole 11, and the size of the limiting head cannot meet the requirement, the base plate 50 can be arranged between the limiting head and the support member 10, so that the gas-insulated enclosed switchgear and the moving range of the bus bar barrel thereof can be expanded to a certain extent.

In the gas-insulated enclosed switchgear in the embodiment of the application, the gas-insulated enclosed switchgear and the bus bar barrel thereof can move in the axial direction of the bus bar barrel through the relative sliding of the bearing piece and the supporting piece in the supporting device, so that the damage of the gas-insulated enclosed switchgear and the bus bar barrel thereof caused by the internal force of thermal expansion is avoided; moreover, the supporting device of the gas insulated enclosed switchgear in the embodiment of the application is simple in structure, compared with the existing compensator, the supporting device in the embodiment is simple in structure and convenient to install, the related parts of the supporting device are low in price, and the installation cost of the gas insulated enclosed switchgear is saved.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only an exemplary embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any person skilled in the art should be able to make equivalent changes, modifications and combinations without departing from the concept and principle of the embodiments of the present application.

Claims

1. A supporting device of a gas insulated enclosed switchgear, comprising:

a support (10);

a bearing part (20), the supporting device is fixedly connected with a bus bar barrel of the gas insulated enclosed switchgear through the bearing part (20), and the bearing part (20) is movably arranged on the supporting part (10) relative to the supporting part (10) in the axial direction of the bus bar barrel;

a spacing subassembly, spacing subassembly includes threaded fastener (31), first lock nut (32) and second lock nut (33), threaded fastener (31) is including spacing head and screw rod, the screw rod passes in proper order support piece (10) with hold carrier (20), first lock nut (32) with second lock nut (33) cover is established on the screw rod, just hold carrier (20) with support piece (10) are located second lock nut (33) with between the spacing head, first lock nut (32) with second lock nut (33) lock each other.

2. The supporting device according to claim 1, characterized in that an avoiding hole (11) for avoiding the screw rod is arranged on the supporting member (10), and the screw rod passes through the avoiding hole (11) and is movable in the avoiding hole (11).

3. A support arrangement according to claim 1, further comprising a first friction reducing structure (41), the first friction reducing structure (41) being arranged between the carrier (20) and the support (10) to reduce resistance to movement of the carrier (20) relative to the support (10).

4. A support arrangement as claimed in claim 1 or 3, characterised in that the support arrangement further comprises a second friction reducing arrangement (42), the second friction reducing arrangement (42) being disposed between the retaining head and the support (10) to reduce resistance to movement of the threaded fastener (31) relative to the support (10).

5. Support device according to claim 4, characterized in that said second friction reducing structure (42) is fixedly connected to said support (10) by means of fastening bolts.

6. The supporting device according to claim 5, wherein the support member (10) is provided with an avoiding hole (11) for avoiding the screw rod, the screw rod passes through the avoiding hole (11) and is movable in the avoiding hole (11), the supporting device further comprises a base plate (50), the base plate (50) is arranged between the limiting head and the support member (10), the screw rod passes through the base plate (50), the base plate (50) is arranged in the axial direction of the bus bar barrel, the length of the avoiding hole (11) is larger than the axial direction of the bus bar barrel, and the second friction reducing structure (42) is arranged between the base plate (50) and the support member (10).

7. The support device according to claim 1, wherein the carrier (20) comprises:

a cross plate (22), the cross plate (22) being movably arranged on the support member (10);

the vertical plate (21) is fixedly connected to the transverse plate (22), the vertical plate (21) is perpendicular to the transverse plate (22), and the vertical plate (21) is fixedly connected with the bus tube.

8. The supporting device according to claim 7, wherein the vertical plate (21) is provided with an arc-shaped bearing surface, and at least a part of the arc-shaped bearing surface is matched with at least a part of the outer peripheral surface of the bus bar barrel.

9. Support device according to claim 7 or 8, characterized in that said carrier (20) further comprises a reinforcement plate (23), said reinforcement plate (23) being connected between said vertical plate (21) and said transverse plate (22).

10. A gas-insulated enclosed switchgear device, characterized in that it comprises a bus-bar drum and a support means according to any one of claims 1-9, said support means being connected to said bus-bar drum for supporting said bus-bar drum.