CN216250352U

CN216250352U - Coil pressing device of dry-type transformer

Info

Publication number: CN216250352U
Application number: CN202122735898.5U
Authority: CN
Inventors: 姚强; 廖富周; 傅前锋
Original assignee: Wuhu Senpu Iron Core Co ltd
Current assignee: Wuhu Senpu Iron Core Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-08
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to the field of dry-type transformers, in particular to a coil pressing device of a dry-type transformer, which comprises an upper clamping piece, a lower clamping piece, four pressing devices, a pressing block, a high-voltage coil anti-skid pad, a low-voltage coil anti-skid pad, a side clamping mechanism and a top pressing mechanism, the coil pressing device of the dry-type transformer adopts a split structure of the waist-shaped pressing plate and the threaded column, after the coil is pressed by the pressing block, the pressing block does not need to rotate by too much angle, the waist-shaped pressing plate is prevented from being clamped into the waist-shaped groove, the waist-shaped pressing plate is added to avoid the rotation of the pressing nut, so that the pressing is more stable, and the threaded column and the waist-shaped pressing plate adopt a split structure, so that the manufacturing cost is low, the popularization is facilitated, the side clamping mechanism is arranged on the side face, so that the high-voltage coil is further compressed, and the high-voltage coil is prevented from displacing.

Description

Coil pressing device of dry-type transformer

Technical Field

The utility model relates to the field of dry-type transformers, in particular to a coil pressing device of a dry-type transformer.

Background

When a transformer coil is installed, in order to avoid shaking of a high-voltage coil and a low-voltage coil, the coil is often required to be pressed by using a coil pressing device, and sometimes, for the stability of the transformer, channel steel is often replaced by a square pipe, so that the weight is reduced, and the cost is reduced.

Chinese patent application No.: CN 201920691815.7; the utility model discloses an anti-loosening structure for a dry-type transformer, which is convenient to assemble, time-saving and labor-saving, wherein a first pressing structure and a second pressing structure can connect a high-voltage coil and a low-voltage coil with an iron core into a whole, so that the relative positions of the high-voltage coil and the low-voltage coil are ensured, the mechanical performance of the whole dry-type transformer is improved, the hidden danger in the operation process is reduced, and an insulating cylinder is arranged between the high-voltage coil and the low-voltage coil to ensure the insulativity between the high-voltage coil and the low-voltage coil.

The coil hold-down device disclosed in this patent has the following drawbacks:

1. although this scheme can compress tightly transformer coil, this scheme adopts waist shape clamp plate and screw post integrated into one piece's structure, and the cost is with high costs, is unfavorable for the popularization.

2. And this scheme can only compress tightly high-voltage coil through the cushion, and high-voltage coil is in the outside, and the external interference that receives is more big, often can take place the risk of separating with the cushion.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coil pressing device of a dry-type transformer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a dry-type transformer coil closing device, including last folder, folder and four closing device down, still include that every closing device all includes the compact heap, the high-pressure coil slipmat, the low-voltage coil slipmat, side clamping mechanism and top hold-down mechanism, low-voltage coil slipmat fixed mounting is in the left end bottom of compact heap, high-pressure coil slipmat fixed mounting is in the right side bottom of compact heap, side clamping mechanism fixed mounting is at the right-hand member of compact heap, be used for supporting tightly to the high-pressure coil, be provided with support side's pipe on going up the folder, top clamping mechanism's bottom fixed mounting is at the top of compact heap, top clamping mechanism's top and support side's pipe conflict, leave the clearance that supplies insulating cylinder card to go up the transformer between low-voltage coil slipmat and the high-voltage coil slipmat.

Further, top hold-down mechanism includes the screw thread post, push down nut and roof pressure nut, the top of screw thread post is inserted and is established in the support side pipe, set up the hole of dodging that supplies the screw thread post to pass on the support side pipe, the bottom of screw thread post is inserted and is established in the compact heap, set up on the compact heap and supply screw thread post male hole of dodging, roof pressure nut and push down nut meshing are on the screw thread post, the top of roof pressure nut is contradicted with the bottom of support side pipe, the bottom of push down nut is contradicted with the top of compact heap.

Further, top hold-down mechanism still includes waist shape clamp plate and first screw, and the kidney slot that supplies kidney shape clamp plate card to go into is seted up at the top of compact heap, and kidney shape clamp plate is established at the kidney inslot, and the bottom of pushing down the nut is contradicted with the tank bottom in kidney slot, and the kidney shape clamp plate is passed to the bottom of first screw, and is connected with the compact heap meshing, and the screw hole that supplies first screw meshing is seted up to the tank bottom in kidney slot.

Further, side clamping mechanism is including compressing tightly the subassembly, extend the piece, baffle and two second screws, extend the one side of piece and the right-hand member laminating of compact heap, one side of baffle and the opposite side laminating of extending the piece, every second screw all passes the baffle in proper order and extends the piece, and the tip and the compact heap meshing of second screw, set up the side screw hole with second screw meshing on the compact heap, all set up the through-hole that supplies the second screw to pass on baffle and the extension piece, compress tightly subassembly fixed mounting in the bottom of baffle, the tip that compresses tightly the subassembly is contradicted with high-voltage coil's outer fringe.

Furthermore, compress tightly the subassembly and include clamp plate, compression leg, third screw and two guide pillars, the baffle is passed to the one end of two guide pillars, sets up the guide hole that supplies the guide pillar to pass on the baffle, and clamp plate fixed mounting is on the other end of two guide pillars, and the third screw meshing is on the baffle, sets up the screw hole with third screw meshing on the baffle, and the tip and the clamp plate of third screw are contradicted.

The utility model has the beneficial effects that: this dry-type transformer coil closing device, through the structure with waist shape clamp plate and screw thread post adoption components of a whole that can function independently, make the compact heap compress tightly the back to the coil, need not rotate too much angle, avoid the unable card of waist shape clamp plate to go into the kidney inslot, through increasing waist shape clamp plate, avoid pushing down the nut and take place to rotate, make and compress tightly more stable, and because screw thread post and waist shape clamp plate adopt the components of a whole that can function independently structure, the cost is with low costs, do benefit to the popularization, through set up side clamping mechanism in the side, further compress tightly high-voltage coil, avoid high-voltage coil to take place the displacement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.

FIG. 1 is a perspective view of the present invention in an assembled state;

FIG. 2 is a perspective view of the present invention in an assembled state;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is an exploded perspective view of the present invention;

FIG. 5 is an exploded view of a portion of the present invention;

FIG. 6 is a perspective view of the hold-down assembly;

in the figure:

1. an upper clamp; 1a, supporting a square tube;

2. a lower clamp;

3. a compression block; 3a, avoiding holes; 3b, a kidney-shaped groove; 3c, a top threaded hole; 3d, side threaded holes;

4. a high-voltage coil anti-skid pad;

5. a low-voltage coil anti-skid pad;

6. a side clamping mechanism; 6a, a pressing component; 6a1, platen; 6a2, compression leg; 6a3, guide posts; 6a4, third screw; 6b, an extension block; 6c, a guide plate; 6d, a second screw;

7. a top hold down mechanism; 7a, a threaded column; 7b, pressing the nut; 7c, pressing the nut; 7d, a waist-shaped pressing plate; 7e, a first screw.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 6, the coil pressing device for the dry-type transformer comprises an upper clamping piece 1, a lower clamping piece 2, four pressing devices, and each pressing device comprises a pressing block 3, a high-voltage coil anti-slip pad 4, a low-voltage coil anti-slip pad 5, a side clamping mechanism 6, and a top pressing mechanism 7, wherein the low-voltage coil anti-slip pad 5 is fixedly arranged at the bottom of the left end of the pressing block 3, the high-voltage coil anti-slip pad 4 is fixedly arranged at the bottom of the right side of the pressing block 3, the side clamping mechanism 6 is fixedly arranged at the right end of the pressing block 3, the clamping device is used for tightly supporting the high-voltage coil, a supporting square tube 1a is arranged on an upper clamping piece 1, the bottom of a top pressing mechanism 7 is fixedly installed at the top of a pressing block 3, the top of the top pressing mechanism 7 is abutted to the supporting square tube 1a, and a gap for clamping the insulating cylinder on the transformer is reserved between a low-voltage coil non-slip mat 5 and a high-voltage coil non-slip mat 4.

Top hold-down mechanism 7 includes screw thread post 7a, push down nut 7b and roof pressure nut 7c, screw thread post 7 a's top is inserted and is established in support side pipe 1a, set up the hole of dodging that supplies screw thread post 7a to pass on the support side pipe 1a, screw thread post 7 a's bottom is inserted and is established in compact heap 3, set up on the compact heap 3 and supply screw thread post 7a male hole of dodging 3a, roof pressure nut 7c and push down nut 7b meshing are on screw thread post 7a, roof pressure nut 7 c's top is contradicted with the bottom of support side pipe 1a, push down nut 7 b's bottom and compact heap 3's top and are contradicted. After low voltage coil slipmat 5 and high-voltage coil slipmat 4 compress tightly on the transformer, insert the inside of supporting square pipe 1a along dodging earlier with screw post 7 a's top through the workman, and insert in dodging hole 3a with screw post 7 a's bottom, the rethread workman twists roof pressure nut 7c, make roof pressure nut 7 c's top contradict with the bottom of supporting square pipe 1a, rethread workman twists down nut 7b, make down nut 7 b's bottom contradict with the top of compact heap 3, and then accomplish compressing tightly of compact heap 3.

The top pressing mechanism 7 further comprises a waist-shaped pressing plate 7d and a first screw 7e, a waist-shaped groove 3b for clamping the waist-shaped pressing plate 7d is formed in the top of the pressing block 3, the waist-shaped pressing plate 7d is clamped in the waist-shaped groove 3b, the bottom of the lower pressing nut 7b is abutted to the bottom of the waist-shaped groove 3b, the bottom end of the first screw 7e penetrates through the waist-shaped pressing plate 7d and is connected with the pressing block 3 in a meshed mode, and a threaded hole for meshing the first screw 7e is formed in the bottom of the waist-shaped groove 3 b. In this scheme, kidney-shaped groove 3b has been seted up at compact heap 3's top, make to push down nut 7b and can bury in kidney-shaped groove 3b, and push down nut 7b compresses tightly the back, rethread workman vigorously twists many and pushes down nut 7b, make to push down nut 7b and be twisted to the position of settlement, rethread workman overlaps kidney-shaped clamp plate 7d on pushing down nut 7b, and kidney-shaped clamp plate 7d card is established at kidney-shaped groove 3b, make to push down nut 7 b's position by the lock, only when compact heap 3 takes place to rotate, push down nut 7b just can rotate, make through this kind of mode, greatly reduced pushes down nut 7b takes place to rotate because vibrations, compress tightly kidney-shaped clamp plate 7d in kidney-shaped groove 3b through using first screw 7e, avoid kidney-shaped clamp plate 7d to take place to reciprocate.

Side clamping mechanism 6 is including compressing tightly subassembly 6a, extend piece 6b, baffle 6c and two second screws 6d, extend one side of piece 6b and the right-hand member laminating of compact heap 3, one side of baffle 6c and the opposite side laminating of extending piece 6b, every second screw 6d all passes baffle 6c and extension piece 6b in proper order, and the tip and the compact heap 3 meshing of second screw 6d, set up the side screw hole 3d with second screw 6d meshing on the compact heap 3, all set up the through-hole that supplies second screw 6d to pass on baffle 6c and the extension piece 6b, compressing tightly subassembly 6a fixed mounting is in the bottom of baffle 6c, compressing tightly subassembly 6 a's tip and high-voltage coil's outer fringe conflict. Through setting up extension piece 6b for the distance between baffle 6c and the compact heap 3 increases, provides the active position for the motion of compressing tightly subassembly 6a, and the rethread two second screws 6d are with baffle 6c and extension piece 6b fixed connection on compact heap 3.

The pressing assembly 6a comprises a pressing plate 6a1, a pressing column 6a2, a third screw 6a4 and two guide columns 6a3, one end of each of the two guide columns 6a3 penetrates through a guide plate 6c, a guide hole for the guide column 6a3 to penetrate through is formed in the guide plate 6c, the pressing plate 6a1 is fixedly mounted at the other end of each of the two guide columns 6a3, the third screw 6a4 is meshed with the guide plate 6c, a threaded hole for the third screw 6a4 to mesh with is formed in the guide plate 6c, and the end of the third screw 6a4 is abutted against the pressing plate 6a 1. After the compressing block 3 is fixedly installed, the third screw 6a4 is screwed by a worker, so that the third screw 6a4 pushes the pressing plate 6a1 to move, the pressing column 6a2 abuts against the outer edge of the high-voltage coil, and the high-voltage coil is fixed under the action of the four pressing columns 6a 2.

Claims

1. A dry-type transformer coil pressing device comprises an upper clamping piece (1), a lower clamping piece (2) and four pressing devices, and is characterized in that each pressing device comprises a pressing block (3), a high-voltage coil anti-slip pad (4), a low-voltage coil anti-slip pad (5), a side clamping mechanism (6) and a top pressing mechanism (7), the low-voltage coil anti-slip pad (5) is fixedly arranged at the bottom of the left end of the pressing block (3), the high-voltage coil anti-slip pad (4) is fixedly arranged at the bottom of the right side of the pressing block (3), the side clamping mechanism (6) is fixedly arranged at the right end of the pressing block (3) and used for pressing against a high-voltage coil, a supporting square tube (1a) is arranged on the upper clamping piece (1), the bottom of the top pressing mechanism (7) is fixedly arranged at the top of the pressing block (3), the top of the top pressing mechanism (7) is abutted against the supporting square tube (1a), and a gap for clamping the insulating cylinder on the transformer is reserved between the low-voltage coil anti-slip pad (5) and the high-voltage coil anti-slip pad (4).

2. The coil pressing device of the dry-type transformer according to claim 1, wherein the top pressing mechanism (7) comprises a threaded column (7a), a pressing nut (7b) and a pressing nut (7c), the top of the threaded column (7a) is inserted into the supporting square tube (1a), an avoiding hole for the threaded column (7a) to pass through is formed in the supporting square tube (1a), the bottom end of the threaded column (7a) is inserted into the pressing block (3), an avoiding hole (3a) for the threaded column (7a) to insert is formed in the pressing block (3), the pressing nut (7c) and the pressing nut (7b) are meshed with the threaded column (7a), the top of the pressing nut (7c) is abutted against the bottom of the supporting square tube (1a), and the bottom of the pressing nut (7b) is abutted against the top of the pressing block (3).

3. The coil pressing device of the dry-type transformer according to claim 2, wherein the top pressing mechanism (7) further comprises a kidney-shaped pressing plate (7d) and a first screw (7e), the top of the pressing block (3) is provided with a kidney-shaped groove (3b) for the kidney-shaped pressing plate (7d) to be clamped in, the kidney-shaped pressing plate (7d) is clamped in the kidney-shaped groove (3b), the bottom of the lower pressing nut (7b) abuts against the bottom of the kidney-shaped groove (3b), the bottom end of the first screw (7e) penetrates through the kidney-shaped pressing plate (7d) and is meshed with the pressing block (3), and the bottom of the kidney-shaped groove (3b) is provided with a threaded hole for the first screw (7e) to be meshed.

4. The coil pressing device of the dry-type transformer according to claim 3, wherein the side clamping mechanism (6) comprises a pressing component (6a), an extension block (6b), a guide plate (6c) and two second screws (6d), one side of the extension block (6b) is attached to the right end of the pressing block (3), one side of the guide plate (6c) is attached to the other side of the extension block (6b), each second screw (6d) sequentially penetrates through the guide plate (6c) and the extension block (6b), the end of each second screw (6d) is meshed with the pressing block (3), the pressing block (3) is provided with a side threaded hole (3d) meshed with the second screw (6d), the guide plate (6c) and the extension block (6b) are provided with a through hole for the second screw (6d) to penetrate through, the pressing component (6a) is fixedly installed at the bottom of the guide plate (6c), the end of the compressing component (6a) is abutted against the outer edge of the high-voltage coil.

5. The coil pressing device of the dry-type transformer according to claim 4, wherein the pressing assembly (6a) comprises a pressing plate (6a1), a pressing post (6a2), a third screw (6a4) and two guide posts (6a3), one end of each of the two guide posts (6a3) penetrates through the guide plate (6c), a guide hole for the guide post (6a3) to penetrate through is formed in the guide plate (6c), the pressing plate (6a1) is fixedly mounted at the other end of each of the two guide posts (6a3), the third screw (6a4) is engaged with the guide plate (6c), a threaded hole for engaging with the third screw (6a4) is formed in the guide plate (6c), and the end of the third screw (6a4) is abutted against the pressing plate (6a 1).