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CN-122025369-A - Multistage elastic compaction fixing transformer for iron core

CN122025369ACN 122025369 ACN122025369 ACN 122025369ACN-122025369-A

Abstract

The invention relates to the technical field of transformer iron core structures, and provides an iron core multistage elastic compression fixed transformer which comprises a transformer body and an iron core body arranged in the transformer body, wherein the iron core body is composed of an upper iron yoke, a lower iron yoke, a plurality of core columns between the upper iron yoke and the lower iron yoke, an upper clamping plate, a lower clamping plate, a flexible compression assembly and a mounting structure, wherein the upper clamping plate is respectively arranged on the front side and the rear side of the upper iron yoke, the lower clamping plate is respectively arranged on the front side and the rear side of the lower iron yoke, the flexible compression assemblies are respectively arranged between the two upper clamping plates and between the two lower clamping plates, the flexible compression assembly is respectively arranged between every two adjacent core columns, and the mounting structure is arranged between the two lower clamping plates.

Inventors

  • WANG XUECHUN
  • SUN YUANSHENG

Assignees

  • 河北安升电力设备有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (9)

  1. 1. The utility model provides a multistage elasticity of iron core compresses tightly fixed transformer, includes transformer body (1) and installs inside iron core body (2) of transformer body (1), iron core body (2) are by last yoke (201), lower yoke (202) and go up yoke (201) with a plurality of stem cores (203) between lower yoke (202), its characterized in that still includes: binding bands (3), wherein a plurality of binding bands (3) are arranged on each core column (203) at equal distances; The winding (4) is sleeved on each core column (203); The upper clamping plates (5) and the lower clamping plates (6) are respectively arranged on the front side and the rear side of the upper iron yoke (201), the upper clamping plates (5) are symmetrically arranged on the two upper clamping plates, the lower clamping plates (6) are respectively arranged on the front side and the rear side of the lower iron yoke (202), and the lower clamping plates (6) are symmetrically arranged; The flexible compression assemblies are arranged between the two upper clamping plates (5) and between the two lower clamping plates (6), and each two adjacent core columns (203) are provided with the flexible compression assemblies which are used for being matched with the upper clamping plates (5) and the lower clamping plates (6) to compress the iron core body (2), and the flexible compression assemblies can provide buffering allowance through elastic deformation when being subjected to vibration or thermal expansion and contraction; and the installation structure is arranged between the two lower clamping plates (6) and is used for installing the iron core body (2) in the transformer body (1).
  2. 2. A multistage elastic compression fixed transformer for iron cores according to claim 1, characterized in that a flexible diaphragm (7) is mounted on the side of each upper clamping plate (5) contacting the upper yoke (201) and on the side of each lower clamping plate (6) contacting the lower yoke (202).
  3. 3. The multi-stage spring compression fixed transformer of claim 1, wherein the flexible compression assembly comprises: The upper iron yoke (201) and the lower iron yoke (202) are respectively bound with a plurality of pressing belts, and each pressing belt is composed of two elastic binding belts (8) and two arc-shaped connecting frames (9); the through grooves (10) are formed in the positions, matched with the elastic binding bands (8), of each upper clamping plate (5) and each lower clamping plate (6), the through grooves (10) are formed in the positions, matched with the elastic binding bands (8), of the upper clamping plates and the lower clamping plates, and the through grooves (10) are used for the elastic binding bands (8) to penetrate through; The elastic pressing parts are arranged on one side, close to the iron core body (2), of each arc-shaped connecting frame (9), and a plurality of elastic pressing parts are respectively arranged on the corresponding upper clamping plates (5) and the corresponding lower clamping plates (6); Compress tightly connecting portion, every two between upper plate (5) and every two between lower plate (6) all install compress tightly connecting portion, compress tightly connecting portion are used for connecting two symmetrical arrangement upper plate (5) and two symmetrical arrangement lower plate (6).
  4. 4. The multistage elastic compaction fixed transformer of iron core according to claim 3, characterized in that the arc-shaped connecting frame (9) is composed of a spring piece (901) and arc-shaped connectors (902) fixedly installed on two sides of the spring piece (901), mounting grooves (11) are formed in two ends of the elastic binding band (8), and the mounting grooves (11) are matched with the arc-shaped connectors (902).
  5. 5. The multistage elastic compression fixed transformer of claim 4, wherein the elastic compression part comprises: Go up gasbag (12) and lower gasbag (13), two upper clamping plate (5) are kept away from one side of iron core body (2) all installs a plurality of go up gasbag (12), two lower clamping plate (6) are kept away from one side of iron core body (2) all installs a plurality of lower gasbag (13), a plurality of go up gasbag (12) and a plurality of lower gasbag (13) all with corresponding arc link (9) butt.
  6. 6. The multi-stage spring compression fixed transformer of claim 5, further comprising: The pipe network (14), the pipe network (14) is respectively arranged on the upper clamping plate (5) and the lower clamping plate (6), the two groups of pipe networks (14) are composed of gas pipes (1401), a plurality of communicating pipes (1402) and communicating joints (1403), and the input end of each gas pipe (1401) is communicated with an inflating valve (1404); And each upper air bag (12) is communicated with the communicating pipe (1402) at the corresponding position in one group of pipe networks (14) through the ventilation joint (15), and each lower air bag (13) is communicated with the communicating pipe (1402) at the corresponding position in the other group of pipe networks (14) through the ventilation joint (15).
  7. 7. The multistage resilient compression fixed transformer of claim 6, wherein the compression connection comprises: The connecting frame, every two symmetry is installed between splint (5) connecting frame, two connecting frame comprises first link (16) and second link (17), first link (16) slidable mounting is in on second link (17), first link (16) with fixed mounting has tensile spring (18) between second link (17), first link (16) are installed through fastener (21) on one of them splint (5), second link (17) are passed through fastener (21) are installed on another splint (5).
  8. 8. The multistage elastic compression fixed transformer of an iron core according to claim 7, characterized in that two connecting frames are symmetrically installed between every two lower clamping plates (6), the first connecting frame (16) of the corresponding two connecting frames is installed on one lower clamping plate (6) through the fastening piece (21), and the second connecting frame (17) is installed on the other lower clamping plate (6) through the fastening piece (21).
  9. 9. The multistage elastic compression fixed transformer of an iron core according to claim 1, wherein the mounting structure comprises a mounting frame (19), the mounting frame (19) is arranged at the bottoms of the two lower clamping plates (6), the mounting frame (19) is fixedly connected with the two lower clamping plates (6) through a limiting frame (20), and the mounting frame (19) is mounted inside the transformer body (1).

Description

Multistage elastic compaction fixing transformer for iron core Technical Field The invention relates to the technical field of transformer core structures, in particular to a transformer with a multistage elastic compression fixing core. Background The iron core of the transformer is a key component for normal operation of the transformer, the iron core is formed by overlapping silicon steel sheets to form a closed magnetic circuit, so that energy is transferred between the primary side and the secondary side of the transformer through the magnetic circuit, the effect of absorbing and eliminating noise and vibration caused by electromagnetic torque is achieved, and the iron core is a core basic component of the transformer. The transformer core is a main magnetic circuit of the transformer and also is a mechanical framework, the core consists of two parts of a core column and an iron yoke, the core column is sleeved with windings, the iron yoke has the function of closing the whole magnetic circuit, the laminated core is divided into a core type and a shell type according to the structural form, the core type transformer has a simpler structure, the windings are assembled and insulated easily, and the domestic power transformer core mainly adopts a core type structure. At present, the core type transformer iron core adopts a conventional compaction mode of matching a rigid clamping plate with a metal fastener, and because of mechanical vibration caused by alternating magnetic flux and thermal expansion and contraction caused by load temperature rise when the transformer operates, if a rigid compaction structure is adopted, the iron core is free of buffer allowance, the compaction force is easy to lose efficacy, a silicon steel sheet is loose, the air gap of a magnetic circuit is further increased, the problem that no-load loss of the iron core is increased and the operation noise is higher occurs, the grounding requirement of the iron core is damaged, a local vortex passage is easy to form, the iron core is locally heated, and the energy efficiency loss is improved. Disclosure of Invention The invention provides a multistage elastic compaction fixed transformer for an iron core, which is used for solving the problems that in the prior art, the iron core is poor in rigid compaction buffer performance, and a plurality of layers of silicon steel sheets forming the iron core are easy to loosen during long-term operation, so that the air gap of a magnetic circuit is increased, and the no-load loss of the iron core is increased. The technical scheme of the invention is as follows: The utility model provides a multistage elasticity of iron core compresses tightly fixed transformer, includes the transformer body and installs the inside iron core body of transformer body, the iron core body comprises last yoke, lower yoke and go up the yoke with a plurality of stem cores between the lower yoke still include: binding bands, wherein a plurality of binding bands are arranged on each core column at equal distance; the winding is sleeved on each core column; the upper clamping plates are respectively arranged on the front side and the rear side of the upper iron yoke, the two upper clamping plates are symmetrically arranged, the lower clamping plates are respectively arranged on the front side and the rear side of the lower iron yoke, and the two lower clamping plates are symmetrically arranged; The flexible compression assemblies are arranged between the two upper clamping plates and between the two lower clamping plates, the flexible compression assemblies are arranged between every two adjacent core columns and used for being matched with the upper clamping plates and the lower clamping plates to compress the iron core body, and buffer allowance can be provided through elastic deformation when vibration or expansion and contraction are carried out; And the installation structure is arranged between the two lower clamping plates and is used for installing the iron core body in the transformer body. Further, a flexible separator is mounted on a side of each upper clamping plate, which is in contact with the upper iron yoke, and a side of each lower clamping plate, which is in contact with the lower iron yoke. In order to compress tightly a plurality of silicon steel sheets that constitute the iron core body to for the iron core body provides buffering surplus, flexible compression assembly includes: the upper iron yoke and the lower iron yoke are respectively bound with a plurality of pressing belts, and each pressing belt consists of two elastic binding belts and two arc-shaped connecting frames; The through grooves are formed in the positions, matched with the elastic binding bands, of each upper clamping plate and each lower clamping plate, and the through grooves are used for the elastic binding bands to pass through; the elastic pressing parts are arranged on one side, close to the iron core body, of each arc-shape