CN210827546U

CN210827546U - Limiting device for main transformer foundation of transformer substation

Info

Publication number: CN210827546U
Application number: CN201921121735.4U
Authority: CN
Inventors: 周裕生; 谢谕; 李文杜; 刘志杰; 吴继航; 王小玻; 杨建煌; 叶家荣; 郑薇
Original assignee: Huizhou Electric Power Survey & Design Institute Co ltd
Current assignee: Huizhou Electric Power Survey & Design Institute Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-06-23
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a stop device of transformer substation owner basic, including base plate and spacing subassembly, set up the hole of keeping away on the fixed plate through setting up to and set up the locking hole on the bearing block, and then can be according to the allowable offset that the actual wire is connected, adjust the position of baffle, so that the baffle that makes can carry out the top in the upper substrate within the scope of the allowable offset that the wire is connected, thereby guaranteed not to break off between owner's change and the wire, avoid owner's change to take place the short circuit and cause the incident; meanwhile, the reinforcing ribs are arranged on the baffle, so that the mechanical strength of the baffle can be enhanced, and when the upper base plate is horizontally loaded, the baffle cannot be broken when being supported with the upper base plate.

Description

Limiting device for main transformer foundation of transformer substation

Technical Field

The utility model relates to a transformer substation field especially relates to a transformer substation becomes stop device on basis.

Background

At present, a main transformer is core equipment for normal operation of a transformer substation. The connection between the main transformer and the foundation only depends on the static friction force provided by the self weight of the main transformer, if the horizontal force borne by the main transformer is greater than the static friction force, the main transformer moves, and if the moving amplitude exceeds the allowable offset of the wire connection, a power failure accident is generated. According to experience summarization and data statistics, the earthquake action is the main horizontal load borne by the main transformer, and the magnitude of the earthquake action is related to earthquake fortification intensity, weight of the main transformer and the height of the gravity center from the ground, so that the horizontal earthquake force borne by the main transformer can be effectively reduced by applying the seismic isolation technology to the foundation of the main transformer, and the safe operation of the main transformer is ensured. The shock insulation technology in the main transformer foundation is to prolong the self-vibration period through the tangential deformation of the shock insulation technology, so as to reduce the horizontal earthquake effect; and meanwhile, the vertical rigidity and the bearing capacity can meet the use requirements of the main transformer.

However, at present, the main transformer horizontally moves back and forth under the action of the shock-insulation support, but when the moving amplitude exceeds the allowable offset of the connection of the conducting wire, the main transformer is easily disconnected from the conducting wire, so that the main transformer fails to operate, and the main transformer is easily in danger of short circuit, thereby causing safety accidents.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide one kind and can prevent that the owner from becoming the stop device that the range of motion surpassing the transformer substation owner of the permission offset that the wire is connected becomes the basis under the effect of isolation bearing.

The purpose of the utility model is realized through the following technical scheme:

a stop device on transformer substation owner becomes basis includes:

the shock insulation support is arranged on the upper substrate, and the upper substrate is arranged on one surface of the shock insulation support, which is far away from the lower substrate; and

the limiting assembly comprises a fixing plate, a bearing block, a baffle and reinforcing ribs, wherein the fixing plate is arranged on the lower substrate, the bearing block is arranged on the fixing plate, the baffle is arranged on the bearing block, the baffle is supported by the upper substrate, the reinforcing ribs are arranged on the baffle, a position avoiding hole is formed in the fixing plate, a locking hole is formed in the bearing block, and the position avoiding hole is communicated with the locking hole.

In one embodiment, the fixing plate is provided with a plurality of the avoiding holes, the support block is provided with a plurality of the locking holes, and the avoiding holes are respectively communicated with the locking holes in a one-to-one correspondence manner.

In one embodiment, the upper substrate has a connection hole, the lower substrate has a mounting groove, and the connection hole is communicated with the mounting groove.

In one embodiment, the upper substrate and the lower substrate are respectively made of concrete.

In one embodiment, the limiting assembly comprises a plurality of reinforcing ribs, and the reinforcing ribs are respectively arranged on the baffle at intervals.

In one embodiment, the vibration isolation support comprises a first base plate, a rubber body, a lead core and a second base plate, wherein the rubber body is arranged on the second base plate, the first base plate is arranged on the rubber body far away from the second base plate, and the lead core is arranged in the rubber body.

In one embodiment, the fixing plate has a rectangular structure.

In one embodiment, the fixing plate and the baffle are made of stainless steel.

In one embodiment, the locking holes have a circular cross-section.

In one embodiment, the avoiding hole is a rectangular hole.

The utility model discloses compare in prior art's advantage and beneficial effect as follows:

the utility model relates to a stop device of transformer substation owner basic, set up the hole of keeping away on the fixed plate through setting up to and set up the locking hole on the bearing block, and then can be according to the allowable offset that the actual wire connects, adjust the position of baffle, so that the baffle that makes can carry out the top in the upper substrate within the range of the allowable offset that the wire connects, thereby guaranteed that the owner can not break off with the wire, avoid the owner to become the short circuit and cause the incident; meanwhile, the reinforcing ribs are arranged on the baffle, so that the mechanical strength of the baffle can be enhanced, and when the upper base plate is horizontally loaded, the baffle cannot be broken when being supported with the upper base plate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a limiting device of a main transformer foundation of a transformer substation according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a limiting assembly according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a limiting device 10 for a main transformer base of a transformer substation includes: the transformer comprises a substrate 100 and a limiting assembly 200, wherein the substrate 100 is used for mounting a main transformer, and the limiting assembly 200 is used for supporting the substrate 100.

Referring to fig. 1 again, the substrate 100 includes an upper substrate 110, a vibration isolation support 120 and a lower substrate 130, the vibration isolation support 120 is disposed on the upper substrate 110, and the upper substrate 110 is disposed on a surface of the vibration isolation support 120 away from the lower substrate 130.

Referring to fig. 2, the limiting assembly 200 includes a fixing plate 210, a supporting block 220, a baffle 230 and a stiffener 240, the fixing plate 210 is disposed on the lower substrate 130, the supporting block 220 is disposed on the fixing plate 210, the baffle 230 is disposed on the supporting block 220, the baffle 230 abuts against the upper substrate 110, the stiffener 240 is disposed on the baffle 230, the fixing plate 210 is provided with a position-avoiding hole 211, the supporting block 220 is provided with a locking hole 221, and the position-avoiding hole 211 is communicated with the locking hole 221.

The main transformer is placed on the upper substrate 110, and the fixing plate 210 is fixed to the lower substrate 130 by an embedded part. When an earthquake occurs, because the connection between the main transformer and the substrate 100 only depends on the static friction force provided by the self-weight of the main transformer, if the horizontal force applied to the main transformer is greater than the static friction force, the seismic isolation support 120 prolongs the self-vibration period through the tangential deformation of the seismic isolation support 120, and thus the action of the horizontal force is reduced. Through setting up fixed plate 210 and baffle 230, owing to seted up a plurality of holes 211 of keeping away on the fixed plate 210, the staff can adjust the position of baffle according to the allowable offset that owner becomes and the wire is connected to make baffle 230 can closely push up with upper substrate 110 and hold, thereby avoid isolation bearing 120 excessive tangential deformation, lead to surpassing the allowable offset that owner becomes and the wire is connected, take place the short circuit and cause the incident. Because the bearing block 220 is arranged on the baffle 230, a plurality of locking holes 221 are formed in the bearing block 220, each locking hole 221 is communicated with each avoiding hole 211, and a worker can lock the baffle 230 and the bearing block 220 through the locking holes 221. Further, by arranging the reinforcing ribs 240, the mechanical strength of the baffle 230 can be enhanced, the baffle 230 is guaranteed to be broken in the process of propping the upper substrate 110, and meanwhile, the structural stability of the whole limiting assembly 200 can also be improved. Wherein, be provided with 4 spacing subassemblies 200 altogether in this application, can increase or reduce spacing subassembly 200's quantity according to actual conditions.

Thus, the position of the baffle 230 can be adjusted according to the allowable offset of actual wire connection by arranging the avoiding hole 211 on the fixing plate 210 and the locking hole 221 on the bearing block 220, so that the baffle 230 can be supported on the upper substrate 110 within the allowable offset range of wire connection, thereby ensuring that no fracture occurs between the main transformer and the wire and avoiding safety accidents caused by short circuit of the main transformer; meanwhile, the reinforcing ribs 240 are provided on the baffle plate 230, so that the mechanical strength of the baffle plate 230 can be enhanced, and the baffle plate 230 is not broken when being abutted against the upper substrate 110 when the upper substrate 110 is subjected to a horizontal load.

Referring to fig. 2 again, in one embodiment, the fixing plate 210 is provided with a plurality of avoiding holes 211, the supporting block 220 is provided with a plurality of locking holes 221, and the avoiding holes 211 and the locking holes 221 are respectively in one-to-one correspondence. In this way, the plurality of locking holes 221 are formed, so that the barrier 230 and the support block 220 can be more firmly fixed to the fixing plate 210.

Referring to fig. 1 again, in one embodiment, a connection hole 111 is formed on the upper substrate 110, a mounting groove 131 is formed on the lower substrate 130, and the connection hole 111 is communicated with the mounting groove 131. It should be noted that, the shock insulation support 120 further comprises a connecting column, and because the main transformer needs daily maintenance, the main transformer penetrates through the connecting hole 111 before the base surface of the base plate is moved, one end of the connecting column is arranged in the mounting groove 131, and the other end of the connecting column is exposed out of the connecting hole 111, and because the shock insulation support 120 can generate tangential deformation in the main transformer moving process, the upper base plate 110 and the lower base plate 130 can be fixed temporarily under the action of the connecting column, and relative sliding cannot occur, so that the shock insulation support 120 cannot generate tangential deformation.

Referring to fig. 1 again, in one embodiment, the upper substrate 110 and the lower substrate 130 are made of concrete. It is to be noted that the concrete has the characteristics of rich raw materials, low price and simple production process, so that the consumption of the concrete is increased more and more. Meanwhile, the concrete also has high compressive strength, good durability and wide strength grade range. Meanwhile, the upper substrate 110 may be prefabricated or cast in situ.

Referring again to fig. 2, further, in one embodiment, the limiting assembly 200 includes a plurality of ribs 240, and the ribs 240 are disposed on the baffle 230 at intervals. It should be noted that the limiting assembly 200 includes 2 reinforcing ribs 240, the 2 reinforcing ribs 240 are disposed on the baffle 230 at intervals, and the mechanical strength of the baffle 230 can be enhanced by disposing the 2 reinforcing ribs 240.

Referring to fig. 1 again, in one embodiment, the vibration isolation support 120 includes a first pad, a rubber body, a lead core, and a second pad, the rubber body is disposed on the second pad, the first pad is disposed on the rubber body away from the second pad, and the lead core is disposed in the rubber body. It should be noted that the seismic isolation bearing 120 of the present application is a lead bearing, and a lead is inserted into the center of the rubber body to improve the damping performance of the rubber body. In addition to bearing the weight and horizontal force of the structure, the lead support can absorb energy due to hysteresis damping plastic deformation of the lead and can provide horizontal restoring force through the rubber body.

Referring again to fig. 2, further, in one embodiment, the fixing plate 210 has a rectangular structure. Referring to fig. 1, specifically, the fixing plate 210 and the baffle 230 are made of stainless steel. Through setting the material of fixed plate 210 and baffle 230 to the stainless steel, the stainless steel has certain corrosion resistance, and it can be able to bear or endure weak corrosive medium such as air, steam, water and corrode, because fixed plate 210 and baffle 230 expose in the air for a long time, design into the material of stainless steel and can prevent by the steam corrosion in the air, and then increase of service life.

Referring again to fig. 2, further, in one embodiment, the locking hole 221 has a circular cross-section. Referring to fig. 1, further, in an embodiment, the clearance holes are 211 rectangular holes. It should be noted that the locking hole 221 is a circular hole, and the bearing block 220 can be locked by a screw, so that the operation is simple; the avoiding hole 211 can be an elliptical hole or a rectangular hole and can be set according to actual conditions.

Compared with the prior art, the utility model has the advantages of it is following:

according to the limiting device 10 for the main transformer foundation of the transformer substation, the position-avoiding hole 211 is formed in the fixing plate 210, the locking hole 221 is formed in the bearing block 220, and then the position of the baffle 230 can be adjusted according to the allowable offset of actual lead connection, so that the baffle 230 can be supported on the upper substrate 110 within the range of the allowable offset of lead connection, and therefore breakage between a main transformer and a lead is avoided, and safety accidents caused by short circuit of the main transformer are avoided; meanwhile, the reinforcing ribs 240 are provided on the baffle plate 230, so that the mechanical strength of the baffle plate 230 can be enhanced, and the baffle plate 230 is not broken when being abutted against the upper substrate 110 when the upper substrate 110 is subjected to a horizontal load.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a stop device on basic that transformer substation becomes, its characterized in that includes:

2. The limiting device of the main transformer foundation of the transformer substation according to claim 1, wherein the fixing plate is provided with a plurality of the avoiding holes, the support block is provided with a plurality of locking holes, and the avoiding holes are respectively communicated with the locking holes in a one-to-one correspondence manner.

3. The limiting device of the main transformer foundation of the transformer substation according to claim 1, wherein a connecting hole is formed in the upper substrate, a mounting groove is formed in the lower substrate, and the connecting hole is communicated with the mounting groove.

4. The limiting device of the transformer substation main transformer base of claim 1, wherein the upper substrate and the lower substrate are respectively concrete.

5. The limiting device of the transformer substation main transformer foundation of claim 1, wherein the limiting assembly comprises a plurality of reinforcing ribs, and each reinforcing rib is arranged on the baffle at intervals.

6. The limiting device for the transformer substation main transformer foundation according to claim 1, wherein the isolation bearing comprises a first base plate, a rubber body, a lead core and a second base plate, the rubber body is arranged on the second base plate, the first base plate is arranged on the second base plate far away from the rubber body, and the lead core is arranged in the rubber body.

7. The limiting device of the substation main transformer foundation of claim 1, wherein the fixing plate has a rectangular structure.

8. The limiting device of the transformer substation main transformer foundation of claim 1, wherein the fixing plate and the baffle plate are respectively stainless steel.

9. The spacing device of a substation main transformer foundation according to claim 1, wherein said locking hole has a circular cross-section.

10. The limiting device of the transformer substation main transformer foundation of claim 1, wherein the avoiding hole is a rectangular hole.