Search

CN-121460351-B - Transformer coil assembly adopting winding positioning stay composite structure

CN121460351BCN 121460351 BCN121460351 BCN 121460351BCN-121460351-B

Abstract

The invention relates to the technical field of transformers and discloses a transformer coil assembly adopting a winding positioning stay composite structure, which comprises an insulating sleeve, wherein mounting plates are symmetrically and fixedly connected on the insulating sleeve in a left-right mode, isolating parts for isolating windings and iron cores are connected on the mounting plates on the right side, and ventilation parts for assisting in heat dissipation of the windings are further arranged on the insulating sleeve and the mounting plates, wherein the isolating parts comprise annular plates, a plurality of annular plates are uniformly and slidably nested from inside to outside, and a plurality of stays are uniformly and fixedly connected at the left end of each annular plate along the circumferential direction. This adopt to wind transformer coil subassembly of location stay composite construction, can solve among the prior art effectively, when the manual work installation transformer stay, the easy operating deviation that appears leads to each interval of stay uneven, and then causes the uneven distance between winding and iron core or the adjacent winding from this, leads to insulating inadequately, the extravagant and aggravate the problem of magnetic leakage phenomenon in space.

Inventors

  • FANG HUA
  • ZHOU JIAMING
  • GU SHUTING
  • Yin Guojin
  • TANG HUI

Assignees

  • 江西华源磁业有限公司

Dates

Publication Date
20260508
Application Date
20251208

Claims (9)

  1. 1. A transformer coil assembly employing a winding location stay composite structure, comprising: the insulation sleeve (1), the mounting plate (2) is fixedly connected on the insulation sleeve (1) in bilateral symmetry, the isolation part (3) for isolating the winding and the iron core is connected on the mounting plate (2) positioned on the right side, and the ventilation part (4) for assisting the winding to dissipate heat is also arranged on the insulation sleeve (1) and the mounting plate (2); The isolation part (3) comprises an annular plate (31), wherein a plurality of annular plates (31) are uniformly and slidably nested from inside to outside, a plurality of supporting bars (32) are uniformly and fixedly connected to the left end of the annular plate (31) along the circumferential direction, and the supporting bars (32) on the plurality of annular plates (31) are in one-to-one correspondence; The left sides of the two mounting plates (2) are respectively and uniformly provided with a stepped groove (21) corresponding to the stay (32) along the circumferential direction, the left end of the stay (32) is provided with a butt joint assembly (33) matched with the stepped groove (21), and the right end of the mounting plate (2) positioned on the right side is connected with an interlocking assembly (34) for limiting the mounting sequence of the stay (32); Wherein, the stay (32) is connected with a support component (35) for preventing the stay from bending.
  2. 2. The transformer coil assembly adopting the winding positioning stay composite structure according to claim 1, wherein the butt joint assembly (33) comprises a waist-shaped groove (331), the left end of the stay (32) is provided with the waist-shaped groove (331) in a penetrating way, and the left end of the stay (32) is symmetrically provided with a chamfer and fixedly connected with a clamping block (332).
  3. 3. The transformer coil assembly adopting the winding positioning stay composite structure according to claim 1, wherein the interlocking assembly (34) comprises a locking block (341), the locking block (341) slides along the radial direction of the right mounting plate (2) and is uniformly provided with a plurality of locking grooves (342) along the circumferential direction at the right end of the mounting plate (2), all the rest stays (32) except the innermost stay (32) are provided with clamping grooves (342) and are connected with the locking block (341) in a sliding manner through the clamping grooves (342), the right end of the stay (32) is connected with a pushing block (343) in a sliding manner, and the right mounting plate (2) is connected with a synchronous module (344) which enables the locking blocks (341) to slide synchronously.
  4. 4. A transformer coil assembly adopting a winding positioning stay composite structure according to claim 3, wherein the locking block (341) adopts a two-section design, the width of one end of the locking block (341) close to the geometric center of the right mounting plate (2) is smaller than the width of one end of the locking block (341) far away from the right mounting plate (2), and a chamfer smooth transition is adopted between the two sections of the locking block (341).
  5. 5. A transformer coil assembly adopting a winding positioning stay composite structure according to claim 3, wherein the right end face of the narrower section of the locking block (341) adopts an inclined plane design, the left end face of the pushing block (343) also adopts an inclined plane design with the same inclination as the locking block (341), and the inclined plane length of the pushing block (343) is larger than the inclined plane length of the locking block (341).
  6. 6. A transformer coil assembly adopting a winding positioning stay composite structure according to claim 3, wherein the synchronization module (344) comprises an annular frame (3441), the annular frame (3441) is connected to the right mounting plate (2) in a damping rotation mode, hanging plates (3442) are uniformly and fixedly connected to the inner circumferential surface of the annular frame (3441), inclined grooves (3443) are formed in the hanging plates (3442), and one end, far away from the geometric center of the right mounting plate (2), of the locking block (341) is connected with the inclined grooves (3443) in a sliding mode through cylindrical blocks (3444).
  7. 7. The transformer coil assembly adopting the winding positioning stay composite structure according to claim 3, wherein the supporting assembly (35) comprises a supporting strip (351), the supporting strip (351) is connected in a sliding and penetrating mode in the supporting strip (32), a supporting block (352) is uniformly and fixedly connected to the lower end of the supporting strip (351), a supporting block (353) is fixedly connected to the right end of the pushing block (343), a guide rod (354) is symmetrically and fixedly connected to the left end of the pushing block (343), a moving block (355) is fixedly connected to the left end of the guide rod (354) in a sliding and penetrating mode in the supporting strip (32) through a reset spring, and a chamfer design matched with the left end of the moving block (355) is adopted by the right end of the supporting strip (351).
  8. 8. The transformer coil assembly adopting the winding positioning stay composite structure according to claim 1, wherein the ventilation part (4) comprises straight grooves (41), the circumferential outer surface of the insulating sleeve (1) is uniformly provided with the straight grooves (41) which extend into the mounting plate (2) and are communicated with the mounting plate, one end, far away from the insulating sleeve (1), of the mounting plate (2) is detachably connected with a sealing plate (42), a notch which is positioned on the right side and is used for avoiding interference with the annular plate (31) is formed in the center of the sealing plate (42), curved grooves (43) which are aligned with the stepped grooves (21) are uniformly formed in the circumferential direction from inside to outside of the mounting plate (2), and through holes (44) are uniformly formed in the two sealing plates (42).
  9. 9. The transformer coil assembly adopting the winding positioning stay composite structure according to claim 2, wherein a plurality of limiting strips (333) matched with the waist-shaped grooves (331) are uniformly and fixedly connected to the right end face of the left sealing plate (42) along the circumferential direction, and chamfers are formed at the right ends of the limiting strips (333).

Description

Transformer coil assembly adopting winding positioning stay composite structure Technical Field The invention relates to the technical field of transformers, in particular to a transformer coil assembly adopting a winding positioning stay composite structure. Background A stay is usually required to be arranged in the winding of the small-sized transformer, and the core reason is that a certain potential difference exists between the iron core and the high-voltage winding and the low-voltage winding. Through the installation stay, can ensure with the help of the physical isolation mode that keeps safe insulation distance between the three, effectively avoid because of wire and iron core direct contact or the too close insulating breakdown problem that causes of interval between the winding, simultaneously, the stay can build up heat dissipation passageway (including air duct or oil duct), prevents that heat from piling up and leading to insulating material (such as wire enamel) to accelerate ageing to extension transformer life. The stay is generally evenly distributed along the circumferential direction of the iron core column, and is stuck on the insulating paper by manpower, the installation mode is easy to cause the following problems that the manual installation process needs to be marked and positioned by means of a scale, so that the installation process is complicated, even if the marking is finished, the installation process can still cause position deviation due to operation deviation, the interval of each stay is uneven, the interval of each stay can cause the winding to deviate to one side with bigger interval after winding, on one hand, the interval of one side between the winding and the iron core or adjacent winding is too small, the insulation deficiency problem is caused, and the interval of the other side is too large, not only the space waste is caused, but also the magnetic leakage phenomenon is aggravated. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a transformer coil assembly adopting a winding positioning stay composite structure, which can effectively solve the problems of insufficient insulation, space waste and aggravation of magnetic leakage phenomenon caused by uneven spacing of each stay and uneven distance between a winding and an iron core or adjacent windings due to uneven operation deviation easily occurring when the transformer stay is manually installed in the prior art. In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides a transformer coil assembly adopting a winding positioning stay composite structure, which comprises the following components: The insulation sleeve is symmetrically and fixedly connected with a mounting plate in a left-right mode, the mounting plate positioned on the right side is connected with an isolation part used for isolating the winding and the iron core, and the insulation sleeve and the mounting plate are also provided with a ventilation part used for assisting the heat dissipation of the winding; The isolation part comprises a plurality of annular plates which are uniformly and slidably nested from inside to outside, a plurality of stay bars are uniformly and fixedly connected with the left end of each annular plate along the circumferential direction, and the stay bars on the plurality of annular plates are in one-to-one correspondence; The left sides of the two mounting plates are respectively and uniformly provided with a stepped groove corresponding to the stay in the circumferential direction, the left end of the stay is provided with a butt joint assembly matched with the stepped groove, and the right end of the mounting plate positioned on the right side is connected with an interlocking assembly for limiting the mounting sequence of the stay; Wherein, be connected with the supporting component that prevents its crooked on the stay. Further, the butt joint assembly comprises a waist-shaped groove, the left end of the stay is penetrated and provided with the waist-shaped groove, and the left end of the stay is symmetrically provided with a chamfer and fixedly connected with a clamping block. Further, the interlocking assembly comprises locking blocks, the locking blocks slide along the radial direction of the mounting plate on the right side and are uniformly arranged on the right end of the mounting plate along the circumferential direction, clamping grooves are formed in all other stays except for the stay on the innermost side and are connected with the locking blocks in a sliding manner through the clamping grooves, the right ends of the stays are all connected with pushing blocks in a sliding manner, and a plurality of synchronous modules which enable the locking blocks to slide synchronously are connected to the mounting plate on the right side. Further, the locking piece adopts two-section design, and the width