Search

CN-121983411-A - Dry-type transformer core fixed knot constructs

CN121983411ACN 121983411 ACN121983411 ACN 121983411ACN-121983411-A

Abstract

The invention relates to the technical field of transformers, in particular to a dry type transformer iron core fixing structure. The dry-type transformer iron core fixing structure comprises a fixing assembly, a base assembly and a sliding rail frame, wherein the fixing assembly comprises two fixing sleeve plates which are positioned on the front face of an iron core and symmetrically distributed relative to the iron core, side cover plates are arranged on the left side and the right side of the iron core, the base assembly is arranged at the bottom of the fixing assembly, the sliding rail frame comprises an upper rail and a lower rail which are parallel to each other, the upper rail and the lower rail are connected through a frame, a heat transfer sleeve member is arranged at the top of the iron core and is in sliding connection with the upper rail, and the base assembly is in sliding connection with the lower rail. The invention utilizes the cooperation of the multipoint wrapped type fixing and buffering vibration reduction mechanism to realize the stable constraint and vibration isolation of the iron core, combines the directional air cooling and the micro-displacement disturbance, and realizes the efficient heat dissipation and the surface self-cleaning, thereby comprehensively improving the running stability and the service life of the transformer.

Inventors

  • GUO SHIXUAN

Assignees

  • 福建福清核电有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (10)

  1. 1. The dry type transformer iron core fixing structure is characterized by comprising a fixing assembly (2), a base assembly (3) and a sliding rail frame (33); the fixing assembly (2) comprises two fixing sleeve plates (21) which are positioned on the front surface of the iron core (1), wherein the two fixing sleeve plates (21) are symmetrically distributed relative to the iron core (1), and side cover plates (22) are arranged on the left side and the right side of the iron core (1); the bottom of the fixing component (2) is provided with a base component (3); The sliding rail frame (33) comprises an upper rail (332) and a lower rail (331) which are parallel to each other, and the upper rail (332) and the lower rail (331) are connected through a frame; The top of the iron core (1) is provided with a heat transfer sleeve (43), and the heat transfer sleeve (43) is in sliding connection with the upper rail (332); the base component (3) is in sliding connection with the lower rail (331); The fixed sleeve plate (21) comprises: The upper plate (211), the upper plate (211) is fixedly connected to the top of the iron core (1), and a through hole is formed in the front of the upper plate (211), the top of the iron core (1) is fixedly connected with a ventilation filler strip (23), the ventilation filler strip (23) is positioned in the upper plate (211), and the left side of the ventilation filler strip (23) is penetrated with the through hole; The middle sleeve plate (212), the middle sleeve plate (212) is fixedly connected to the bottom of the upper plate (211), and the middle sleeve plate (212) is positioned on the front surface of the surface between the two through holes of the iron core (1); The inner sleeve plates (213) are fixedly connected to the bottom of the upper plate (211), and the inner sleeve plates (213) are two in total and are positioned at one side, close to the outer surface of the iron core (1), of the inner part of the through hole of the iron core (1); The lower plate (214), the lower plate (214) is fixedly connected to the bottom of the middle sleeve plate (212), and the front surface of the lower plate (214) is provided with a through hole; the bottom hook plate (215) is positioned at the bottom of the iron core (1) and is fixedly connected between the two lower plates (214).
  2. 2. The dry-type transformer core fixing structure of claim 1, wherein the side cover plates (22) are arranged at the left side and the right side of the fixed sleeve plate (21), through holes are formed in the outer surfaces of the side cover plates (22), grooved plates are fixedly connected to the bottoms of the side cover plates (22), the grooved plates at the bottoms of the side cover plates (22) are fixedly connected with the bottom hook plates (215), an air cushion strip (23) is fixedly connected to the top of the core (1), the air cushion strip (23) is arranged in the upper plate (211), and through holes are formed in the left side of the air cushion strip (23) in a penetrating mode.
  3. 3. The dry-type transformer core fixing structure according to claim 1, wherein the base assembly (3) comprises a traverse carriage (31), a buffer seat (32); The transverse sliding carriage (31) is connected to the bottom of the bottom hook plate (215) in a sliding manner, and a buffer seat (32) is arranged at the bottom of the transverse sliding carriage (31); The buffer seat (32) comprises a bottom sliding block (321) positioned at the bottom of the transverse sliding carriage (31), a sliding head rod (322) is connected to the top of the bottom sliding block (321) through a spring in a sliding manner, the top of the sliding head rod (322) is rotationally connected to the bottom of the transverse sliding carriage (31) through a ball head, a filling gasket (323) is fixedly connected to the top of the bottom sliding block (321), a sliding rail frame (33) is arranged at the bottom of the buffer seat (32), and the sliding rail frame (33) comprises a lower rail (331) which is connected to the outer surface of the bottom sliding block (321) through a spring in a sliding manner.
  4. 4. The dry-type transformer core fixing structure according to claim 3, wherein the permanent magnet is embedded in the slider bar (322), and an electromagnet base (34) is fixedly connected to the bottom of the lower rail (331).
  5. 5. The dry-type transformer core fixing structure of claim 4, wherein the front and the back of the bottom sliding block (321) are fixedly connected with guide sliding bars (324), the lower rail (331) is slidably connected with the lower rail (331) through a through hole on the front, and a displacement sensor (35) is fixedly connected to the front of the through hole of the lower rail (331).
  6. 6. The dry-type transformer core fixing structure according to claim 1, wherein the heat transfer sleeve (43) comprises a top plate (431) fixedly connected to the top of the upper plate (211), a supporting frame (432) is connected to the bottom of the top plate (431) in a specified and linked mode, and a through hole is formed in the left side of the supporting frame (432).
  7. 7. The dry-type transformer core fixing structure of claim 6, wherein an outer sliding sleeve (433) is slidably connected to the bottom of the upper rail (332), an inner sliding sleeve (434) is slidably connected to the inside of the outer sliding sleeve (433), the bottom of the inner sliding sleeve (434) is rotatably connected to the top of a top plate (431), and a heat dissipating row (435) is fixedly connected to the top of the top plate (431).
  8. 8. The dry-type transformer core fixing structure according to claim 1, further comprising a blower (41), wherein the blower (41) is fixedly connected to the left side of the upper rail (332); The blower (41) is communicated with the left side part of the side cover plate (22); the bottom of the frame between the upper rails (332) is fixedly connected with a temperature probe (6).
  9. 9. The dry-type transformer core fixing structure according to claim 1, wherein an installation plate (42) is fixedly connected to the outer surface of the inner sleeve plate (213), a spacing barrel plate (44) is fixedly connected to the bottom of the installation plate (42), the spacing barrel plate (44) is formed by splicing two semicircular plates, and a groove is formed in the inner side of the outer surface of the spacing barrel plate (44).
  10. 10. A dry-type transformer core fixing structure is characterized in that a vibration assembly (45) is arranged in a spacer tube plate (44), the vibration assembly (45) comprises a mounting arc plate (451) fixedly connected to the inside of the spacer tube plate (44), a crankshaft (452) is rotatably connected to the inner side of the outer surface of the mounting arc plate (451), the other end of the crankshaft (452) is rotatably connected to the outer surface of a middle sleeve plate (212), a first impeller (453) is rotatably connected to the outer surface of the mounting arc plate (451), the first impeller (453) is right opposite to a through hole on the outer surface side of the middle sleeve plate (212), a transfer sliding block (454) is rotatably connected to the outer surface of the mounting arc plate (451), a vertical rod (455) is rotatably connected to the bottom of the transfer sliding block (454), an action cam (457) is fixedly connected to the bottom of the second impeller (456), a bump is rotatably connected to the bottom of the vertical rod (455), and one end of the bump is slidably connected to the outer surface of the mounting arc plate (451).

Description

Dry-type transformer core fixed knot constructs Technical Field The invention relates to the technical field of transformers, in particular to a dry type transformer iron core fixing structure. Background The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core, and the main functions of the transformer include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization and the like, and the transformer can be divided into a dry type transformer, an oil immersed type transformer, a combined transformer and the like according to purposes, wherein the dry type transformer refers to a transformer with the iron core and windings not immersed in insulating oil, and the transformer has the advantages of strong short circuit resistance, small maintenance workload, high operation efficiency, small volume, low noise and the like, and is commonly used in places with high performance requirements such as fire resistance, explosion resistance and the like; The existing transformer iron core is usually fixed by adopting clamping pieces at the upper end and the lower end, the fixing conditions at the upper end and the lower end can be changed differently under the long-term influence of magnetostriction of the iron core and external factors, after the clamping piece at one end is loosened, the rigidity distribution of the whole structure is changed, the loosening of the clamping piece at the other end is further promoted, no-load loss is finally caused to rise, and the operation safety of the transformer can be threatened even. Disclosure of Invention The invention aims to solve the technical problem of providing the iron core fixing structure of the dry-type transformer, which improves the overall structural rigidity and the fixing reliability of the iron core under the condition of long-term electromagnetic force and vibration. The invention provides a dry-type transformer iron core fixing structure which comprises a fixing assembly, a base assembly and a sliding rail frame, wherein the base assembly is arranged on the base assembly; The fixing assembly comprises two fixing sleeve plates positioned on the front surface of the iron core, the fixing sleeve plates are symmetrically distributed about the iron core, and side cover plates are arranged on the left side and the right side of the iron core; the bottom of the fixing component is provided with a base component; the sliding rail frame comprises an upper rail and a lower rail which are parallel to each other, and the upper rail and the lower rail are connected through a frame; the top of the iron core is provided with a heat transfer sleeve, and the heat transfer sleeve is in sliding connection with the upper rail; The base assembly is in sliding connection with the lower rail. As a further technical solution, the fixing sleeve plate includes: The upper plate is fixedly connected to the top of the iron core, and a through hole is formed in the front surface of the upper plate; The middle sleeve plate is fixedly connected to the bottom of the upper plate and is positioned on the front surface of the surface between the two through holes of the iron core; the inner sleeve plates are fixedly connected to the bottom of the upper plate, and the inner sleeve plates are two in number and are positioned at one side, close to the outer surface of the iron core, of the inner core through hole; the lower plate is fixedly connected to the bottom of the middle sleeve plate, and a through hole is formed in the front surface of the lower plate; the bottom hook plate is positioned at the bottom of the iron core and is fixedly connected between the two lower plates. As a further technical scheme, the side cover plates are two in total and are located at the left side and the right side of the fixed sleeve plate, the through holes are formed in the outer surfaces of the side cover plates, the grooved plates at the bottoms of the side cover plates are fixedly connected with the grooved plates, the grooved plates at the bottoms of the side cover plates are fixedly connected with the bottom hook plates, the top of the iron core is fixedly connected with the ventilation filler strip, the ventilation filler strip is located inside the upper plate, and the through holes are formed in the left side of the ventilation filler strip in a penetrating mode. As a further technical scheme, the base component comprises a transverse sliding carriage and a buffer seat; The transverse sliding rack is connected to the bottom of the bottom hook plate in a sliding manner, and a buffer seat is arranged at the bottom of the transverse sliding rack; the buffer seat comprises a bottom sliding block positioned at the bottom of the transverse sliding carriage, the top of the bottom sliding block is connected with a sliding head rod throug