CN214705670U

CN214705670U - Connecting device used between transformer oil tank and transformer

Info

Publication number: CN214705670U
Application number: CN202122362507.XU
Authority: CN
Inventors: 王斌; 任洁; 刘永彬; 马传惠
Original assignee: Weifang Wuzhou Haote Electric Co ltd
Current assignee: Weifang Wuzhou Haote Electric Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2021-11-12
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a connecting device for between transformer tank and transformer belongs to oil-immersed transformer technical field, including a plurality of buffer components that set up respectively between the bight of oil tank bottom plate and the bight of the iron core base of transformer, buffer component includes the pipe of fixed mounting on oil tank bottom plate and the tubular bracing piece of fixed mounting in the iron core base, the lower extreme of bracing piece stretches into in the pipe, and be provided with the elastic component between the bottom of bracing piece and the bottom of pipe, the bracing piece is provided with limit structure with the pipe cooperation, this connecting device simple structure, strong stability can guarantee to support transformer body demand, limit the further displacement of iron core in the vertical direction, have the function of buffering shock attenuation again, improve the stability of transformer operation, the comprehensive cost of transformer has been practiced thrift; the looseness of the sealing bolt of the oil tank body caused by the long-time accumulation of vibration is avoided, and the environmental pollution caused by oil leakage is prevented.

Description

Connecting device used between transformer oil tank and transformer

Technical Field

The utility model belongs to the technical field of oil-immersed transformer, concretely relates to a connecting device for be used for between transformer tank and the transformer.

Background

The connecting device between traditional transformer tank and transformer adopts a connection structure more: a positioning nail 11 is welded on a fuel tank bottom plate 10 inside a transformer fuel tank, a transformer iron core base 12 is provided with a positioning round hole 13, and the positioning nail 11 penetrates through the positioning round hole 13 to be in through connection with the iron core base 12, as shown in figure 1.

Because the structure only uses the positioning nail 11 to be connected with the iron core base 12 in a penetrating way, the structure only can provide the positioning function of the iron core base 12 in the horizontal direction, and the iron core base 12 can freely move in the vertical direction. This connection structure function is simple, there is not the shock attenuation effect, after transformer installation is accomplished, receive iron core gravity oppression, the direct tight crimping contact with the oil tank bottom plate of iron core base, the vibrations that the transformer produced when moving in the oil tank, can pass through the location nail and transmit the oil tank bottom plate, can lead to the vibrations of whole oil tank box, and then lead to the vibrations of each fixed connection structure of transformer, the long-time accumulation of vibrations can increase transformer fault rate, increase the potential safety hazard of transformer operation, also can arouse that oil tank box body sealing bolt is not hard up, lead to the transformer oil leak, cause environmental pollution.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the connecting device for the transformer oil tank and the transformer has the advantages that the damping effect and the vertical limiting function are achieved, the fault rate of the transformer can be reduced, and the safety and stability performance of the transformer are improved.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides a connecting device for between transformer tank and transformer, includes a plurality of buffer assembly that set up respectively between the bight of oil tank bottom plate and the bight of the iron core base of transformer, buffer assembly include fixed mounting in pipe and fixed mounting on the oil tank bottom plate in the tubulose bracing piece of iron core base, the lower extreme of bracing piece stretches into in the pipe, just the bottom of bracing piece with be provided with the elastic component between the bottom of pipe, the bracing piece with the pipe cooperation is provided with limit structure.

Furthermore, limit structure including set up in the protruding type stopper of bracing piece inner wall and axial set up in the gag lever post in the pipe, the protruding card of upper end axial of gag lever post is in the top of stopper, lower extreme are fixed the bottom of pipe.

Furthermore, the elastic part is a spring, and the spring is sleeved on the outer side of the limiting rod.

Furthermore, a support plate is arranged between the circular tube and the oil tank bottom plate.

Furthermore, the limiting rod is a bolt, and the bolt is in threaded connection with the support plate.

Furthermore, the middle part of the outer wall of the supporting rod is provided with a supporting lug plate which is supported at the bottom of the iron core base, and the upper end of the supporting rod extends out of a positioning round hole in the iron core base and is fixedly connected with a limiting pipe.

Furthermore, the upper end of the supporting rod is provided with a buckle hole, the inner wall of the limiting pipe is provided with a concave limiting groove, and a limiting elastic sheet arranged in the supporting rod penetrates through the buckle hole and is clamped in the limiting groove.

Furthermore, the limiting elastic sheet is of a U-shaped structure and comprises bending portions arranged at two ends and two buckling portions which are close to the bending portions respectively, the bending portions are clamped in the mounting grooves in the inner wall of the supporting rod, and the buckling portions extend out of the buckling holes and are clamped in the limiting grooves.

Furthermore, the limiting groove is of an annular structure, and the upper half part and the lower half part of the limiting groove are inclined planes.

Furthermore, the lower end of the positioning round hole is a conical inclined plane, and the inner diameter of the conical inclined plane is gradually reduced from the bottom surface of the iron core base upwards.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

because the connecting device used between the transformer oil tank and the transformer of the utility model comprises a plurality of buffer components which are respectively arranged between the corner part of the oil tank bottom plate and the corner part of the iron core base of the transformer, the buffer components comprise a round tube which is fixedly arranged on the oil tank bottom plate and a tubular supporting rod which is fixedly arranged on the iron core base, the lower end of the supporting rod extends into the round tube, an elastic part is arranged between the bottom of the supporting rod and the bottom of the round tube, and the supporting rod is matched with the round tube to be provided with a limit structure, the connecting device has simple structure and strong stability, not only can guarantee the requirement of supporting the transformer body and limit the further displacement of the iron core in the vertical direction, but also has the function of buffering and damping, and improves the stability and the safety of the operation of the transformer by consuming the kinetic energy of vibration in the vibration transmission process, reduces the failure rate of the transformer, reduces the repair and repair caused by the failure of the transformer, the number of maintenance personnel is reduced, the running stability of the transformer is improved, and the comprehensive cost of the transformer is saved; the structure is strong in stability, simple and convenient to install and maintain; the looseness of the sealing bolt of the oil tank body caused by the long-time accumulation of vibration is avoided, the oil leakage phenomenon of the transformer is effectively reduced, and the environmental pollution caused by oil leakage is prevented.

Drawings

FIG. 1 is a schematic diagram of a connection device between a transformer tank and a transformer in the prior art;

fig. 2 is a schematic structural diagram of the connecting device for the transformer between the transformer oil tank and the transformer of the present invention;

FIG. 3 is a schematic structural view of a cushioning assembly;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

in the figure, 10-an oil tank bottom plate, 11-a positioning nail, 12-an iron core base, 13-a positioning round hole, 14-a conical inclined plane, 15-a buffer component, 20-a support plate, 21-a round tube, 22-a spring, 23-a limiting rod, 30-a support rod, 31-a limiting block, 32-a support lug plate, 33-a buckling hole, 34-a mounting groove, 40-a limiting elastic sheet, 41-a buckling part, 42-a bending part, 50-a limiting tube and 51-a limiting groove.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.

As shown in fig. 2 and 3 together, a connecting device for a transformer tank and a transformer comprises a plurality of buffer assemblies 15 respectively arranged between corners of a tank bottom plate 10 and corners of a core base 12 of the transformer. The buffer assembly 15 comprises a round tube 21 fixedly mounted on the oil tank bottom plate 10 and a tubular supporting rod 30 fixedly mounted on the iron core base 12, the lower end of the supporting rod 30 extends into the round tube 21, an elastic part is arranged between the bottom of the supporting rod 30 and the bottom of the round tube 21, and a limiting structure is arranged between the supporting rod 30 and the round tube 21 in a matched mode. No matter the transformer receives external force and produces and rock or the ware body vibrations, the elastic component is inside at the flexible deformation of vertical direction in pipe 21, can play very big shock attenuation cushioning effect, can effectually reduce the transformer and rock the displacement that produces, effectively reduces transformer ware body vibrations to whole box structure and the internal and external fixed connection structure's of box influence, prevents that the bolt is not hard up, guarantees the stability of transformer operation, has effectively reduced transformer oil leak risk, prevents environmental pollution. The support rod 30 is made of high-quality steel and has the functions of vertically positioning and supporting the core base 12.

As shown in fig. 3, the limiting structure includes a convex limiting block 31 disposed on the inner wall of the supporting rod 30 and a limiting rod 23 axially disposed in the circular tube 21, and an axial protrusion at the upper end of the limiting rod 23 is clamped above the limiting block 31 and the lower end is fixed at the bottom of the circular tube 21. The round tube 21 can position and support the support rod 30. Wherein, the elastic component is a spring 22, and the spring 22 is sleeved outside the limiting rod 23. The limiting rod 23 is matched with the limiting block 31 in the supporting rod 30, and can play a role in fixing and limiting the vertical upward displacement of the supporting rod 30.

As shown in fig. 3, a stay 20 is provided between the circular tube 21 and the tank bottom plate 10, the stay 20 is welded to the tank bottom plate, and the circular tube 21 is welded to the stay 20. The support plate 20 can support the whole structure and the iron core, and has an isolation protection effect on the oil tank bottom plate 10, so that the spring 22 is prevented from being in direct contact with the tank bottom plate, and the abrasion phenomenon of the tank bottom plate caused by the spring 22 in the expansion process is avoided. The limiting rod 23 is a bolt, the bolt is connected to the support plate 20 through threads, and the bolt is a cross hexagon bolt.

As shown in fig. 3 and 4, the middle part of the outer wall of the support rod 30 is provided with a support ear plate 32 supported at the bottom of the iron core base 12, and the upper end of the support rod 30 extends out of the positioning round hole 13 on the iron core base 12 and is fixedly connected with the limiting tube 50. The supporting ear plate 32 can support the iron core base 12, so that the iron core base 12 is separated from the oil tank bottom plate 10 and is not in direct contact with the oil tank bottom plate, and the transmission of vibration during the operation of the transformer is reduced.

As shown in fig. 4, the upper end of the supporting rod 30 is provided with a fastening hole 33, the inner wall of the limiting tube 50 is provided with a concave limiting groove 51, and the limiting elastic sheet 40 installed in the supporting rod 30 passes through the fastening hole 33 and is fastened in the limiting groove 51. The limiting elastic sheet 40 can limit the vertical upward displacement of the iron core base 12, the structural stability is improved, the limiting capacity is increased, the transformer iron core base 12 is limited at a fixed position, the possibility that the iron core generates upward displacement due to external impact in the box body is reduced, and the fault rate of the transformer is further reduced.

As shown in fig. 4, the limiting elastic sheet 40 is a U-shaped structure, the limiting elastic sheet 40 includes two buckling portions 41 respectively close to the two bending portions 42 and bending portions 42 disposed at two ends, the bending portions 42 are buckled in the mounting grooves 34 of the inner wall of the supporting rod 30, and the buckling portions 41 extend out of the buckling holes 33 and are buckled in the limiting grooves 51. The limiting groove 51 is of an annular structure, and the upper half part and the lower half part of the limiting groove 51 are inclined planes, so that the clamping part 41 can slide in and out conveniently. The lower end of the positioning round hole 13 is a conical inclined surface 14, and the inner diameter of the conical inclined surface 14 is gradually reduced from the bottom surface of the iron core base 12 upwards, so that the clamping part 41 is convenient to install.

When the transformer iron core is installed, the spring 22 and the support rod 30 are fixed on the support plate 20 by using a cross hexagon bolt in advance, then the limiting elastic sheet 40 is arranged in the clamping hole 33, and the iron core is vertically installed. In the process of vertical falling of the iron core, the conical inclined surface 14 at the positioning round hole 13 of the iron core base 12 extrudes the limiting elastic sheet 40, the limiting elastic sheet 40 is compressed under stress, and two ends of the limiting elastic sheet shrink inwards, so that the installation is not influenced. When the iron core base 12 reaches the position contacting with the supporting ear plate 32, the two ends of the limiting elastic sheet 40 extend and are clamped into the limiting groove 51 of the limiting tube 50, so that the iron core base 12 is limited in the fixed area, the iron core base 12 is prevented from moving in the vertical direction, and the limiting effect is achieved. When the transformer needs to be disassembled, the iron core is only required to be hoisted to give vertical upward tensile force, under the extrusion action of the inclined plane of the limiting groove 51 of the limiting tube 50, the two ends of the limiting elastic sheet 40 contract inwards, the limiting groove 51 is withdrawn, the limiting effect is cancelled, and the normal operation of hoisting and disassembling the transformer is ensured.

The utility model discloses a connecting device for between transformer tank and transformer sets up the buffering subassembly through setting up between the bight of the oil tank bottom plate and the bight of the iron core base of transformer, the buffering subassembly includes pipe and the tubular bracing piece of fixed mounting in iron core base on the oil tank bottom plate of fixed mounting, the lower extreme of bracing piece stretches into in the pipe, and be provided with the elastic component between the bottom of bracing piece and the bottom of pipe, the bracing piece is provided with limit structure with the pipe cooperation, this structure has shock attenuation effect and perpendicular limit function, and is strong in stability, moreover, the steam generator is simple in structure, be convenient for install and maintain, can effectively reduce transformer fault rate, reduce the troubleshooting because of the transformer, repair work, the stability of transformer operation has been improved.

Although specific embodiments of the present invention have been described above, it should be understood by those skilled in the art that the described embodiments are only some of the embodiments of the present invention, rather than all embodiments, which are given by way of illustration only, and the scope of the present invention is defined by the appended claims. Without any inventive step, those skilled in the art can make various changes or modifications to the embodiments without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a connecting device for between transformer tank and transformer, its characterized in that, includes a plurality of buffer assembly that set up respectively between the bight of oil tank bottom plate and the bight of the iron core base of transformer, buffer assembly include fixed mounting in pipe and fixed mounting on the oil tank bottom plate in the tubulose bracing piece of iron core base, the lower extreme of bracing piece stretches into in the pipe, just the bottom of bracing piece with be provided with the elastic component between the bottom of pipe, the bracing piece with the pipe cooperation is provided with limit structure.

2. The connecting device for connecting between transformer tank and transformer of claim 1, characterized in that, limit structure includes the protruding type stopper that sets up in bracing piece inner wall and the gag lever post that sets up axially in the pipe, the upper end axial bulge card of gag lever post is in the top of stopper, the lower extreme is fixed in the bottom of pipe.

3. The connecting device for the oil tank of the transformer and the transformer as claimed in claim 2, wherein the elastic member is a spring, and the spring is sleeved outside the limiting rod.

4. The connecting device for the transformer tank and the transformer as claimed in claim 3, wherein a support plate is arranged between the circular tube and the oil tank bottom plate.

5. The connecting device for the oil tank of the transformer and the transformer as claimed in claim 4, wherein the limiting rod is a bolt, and the bolt is in threaded connection with the support plate.

6. The connecting device for the oil tank of the transformer and the transformer as claimed in any one of claims 1 to 5, wherein a support lug plate supported at the bottom of the iron core base is arranged in the middle of the outer wall of the support rod, and the upper end of the support rod extends out of a positioning round hole on the iron core base to be fixedly connected with a limiting pipe.

7. The connecting device for the oil tank and the transformer of the claim 6, wherein the upper end of the support rod is provided with a buckling hole, the inner wall of the limit tube is provided with a concave limit groove, and a limit elastic sheet installed in the support rod passes through the buckling hole to be buckled in the limit groove.

8. The connecting device for connecting between transformer tank and transformer of claim 7, wherein the limiting elastic sheet is a U-shaped structure, the limiting elastic sheet comprises two bending portions disposed at two ends and two buckling portions respectively close to the two bending portions, the bending portions are buckled in the mounting grooves of the inner wall of the support rod, and the buckling portions extend out of the buckling holes and are buckled in the limiting grooves.

9. The connecting device for the oil tank and the transformer of claim 8, wherein the limiting groove is of a ring structure, and the upper half part and the lower half part of the limiting groove are both inclined surfaces.

10. The connecting device for the oil tank and the transformer of the claim 6, wherein the lower end of the positioning round hole is a conical inclined surface, and the inner diameter of the conical inclined surface is gradually reduced from the bottom surface of the iron core base to the top.