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CN-122025358-A - High radiating oil-immersed transformer

CN122025358ACN 122025358 ACN122025358 ACN 122025358ACN-122025358-A

Abstract

The invention discloses a high-heat-dissipation oil-immersed transformer, which relates to the technical field of oil-immersed transformers and comprises a transformer body, a heat exchange mechanism and a heat dissipation mechanism, wherein the heat exchange mechanism is arranged on the outer side of the transformer body, the heat dissipation mechanism is arranged at the top of the heat exchange mechanism, the heat exchange mechanism comprises a first chain, a first shifting plate and a second shifting plate, the first chain is arranged on the outer side of the first shifting plate, the second shifting plate is arranged on the outer side of the first shifting plate, the first chain is used for driving the first shifting plate to rotate, the first shifting plate is used for shifting the second shifting plate to move, oil is pumped back to an oil delivery bin by an oil pump, and oil flows back to the transformer body through an oil delivery pipe to complete the circulation heat dissipation of the oil, so that the damage to a transformer coil caused by the oil exciting flow generated by a traditional oil pump is avoided, the condition that the insulation failure of the coil and an iron core is accelerated is avoided, and the maintenance cost and the possibility of electrical accident occurrence are reduced.

Inventors

  • MENG CHUNMEI
  • LIU ZEQING
  • YANG CHUNJIANG
  • LIU XIAOJUN
  • LI YAMEI
  • LI YANAN

Assignees

  • 河北开源电力工程有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. The oil immersed transformer with high heat dissipation is characterized by comprising a transformer body (1), a heat exchange mechanism (2) and a heat dissipation mechanism (3), wherein the heat exchange mechanism (2) is arranged on the outer side of the transformer body (1), and the heat dissipation mechanism (3) is arranged on the top of the heat exchange mechanism (2); the heat exchange mechanism (2) comprises a first chain (208), a first shifting plate (212) and a second shifting plate (213), wherein the first chain (208) is arranged on the outer side of the first shifting plate (212), the second shifting plate (213) is arranged on the outer side of the first shifting plate (212), the first chain (208) is used for driving the first shifting plate (212) to rotate, and the first shifting plate (212) is used for shifting the second shifting plate (213) to move.
  2. 2. The high-heat-dissipation oil-immersed transformer according to claim 1, wherein the heat exchange mechanism (2) further comprises two first windows (201), the two first windows (201) are respectively arranged on two sides of the transformer body (1), a first oil bin (203) is arranged on the outer side of the first windows (201), a second window (202) is arranged on the outer side of the transformer body (1), and a second oil bin (204) is arranged on the outer side of the second window (202), and the second oil bin (204) is arranged on the outer side of the transformer body (1).
  3. 3. The high-heat-dissipation oil-immersed transformer as claimed in claim 2, wherein a motor (205) is arranged on the outer side of the bottom of the first oil bin (203), the output end of the motor (205) penetrates through the first oil bin (203) and is provided with a first driving rotating rod (206), and the other end of the first driving rotating rod (206) rotates on the inner side of the first oil bin (203).
  4. 4. The high-heat-dissipation oil-immersed transformer as claimed in claim 3, wherein a plurality of first chain wheels (207) are arranged on the outer side of the first driving rotating rod (206), the number of the first chains (208) is multiple, the first chains (208) are respectively sleeved on the outer sides of the first chain wheels (207), and second chain wheels (209) are respectively sleeved on the inner sides of the other ends of the first chains (208).
  5. 5. The high heat dissipation oil-immersed transformer of claim 4, wherein a first driven rotating rod (210) is arranged on the inner sides of the second chain wheels (209), the first driven rotating rod (210) rotates on the inner side of the top of the first oil bin (203), a first connecting rotating rod (227) is rotatably connected to the lower side of the inner part of the second oil bin (204), a second connecting rotating rod (228) is rotatably connected to the upper side of the inner part of the second oil bin (204), and a third chain wheel (229) is arranged on the outer side of the first connecting rotating rod (227).
  6. 6. The high heat dissipation oil immersed transformer of claim 5, wherein a fourth sprocket (230) is arranged on the outer side of the second connecting rotating rod (228), a second chain (231) is sleeved on the outer sides of the third sprocket (229) and the fourth sprocket (230), a plurality of connecting pieces (211) are arranged on the outer sides of the first chains (208), a first shifting plate (212) is arranged on the outer sides of the corresponding connecting pieces (211), another group of connecting pieces (211) are arranged on the outer sides of the second chains (231), second shifting plates (213) are arranged on the outer sides of the other connecting pieces (211), a plurality of hot oil flow windows (214) are formed on the outer sides of the transformer body (1), and the hot oil flow windows (214) are provided with hot oil flow pipes (215).
  7. 7. The high heat dissipation oil immersed transformer as claimed in claim 6, wherein a plurality of the hot oil flow pipes (215) are arranged on the outer side of the transformer body (1), two heat dissipation oil pipes (216) are communicated with the bottoms of the hot oil flow pipes (215), two connecting oil pipes (217) are communicated with the inner sides of the two heat dissipation oil pipes (216), a plurality of threaded heat dissipation layer pipes (218) are communicated with the bottoms of the connecting oil pipes (217), a collecting oil pipe (219) is communicated with the bottoms of the threaded heat dissipation layer pipes (218), and a concentrated oil bin (220) is communicated with the inner sides of the two collecting oil pipes (219).
  8. 8. The high heat dissipation oil immersed transformer of claim 7, wherein an oil suction pipe (221) is communicated with the bottom of the concentrated oil bin (220), an oil pump (222) is communicated with the top end of the oil suction pipe (221), an oil delivery bin (223) is communicated with the output end of the oil pump (222), the oil delivery bin (223) is arranged at the top of the transformer body (1), an oil delivery pipe (224) is communicated with the bottom of the oil delivery bin (223), and the other end of the oil delivery pipe (224) is communicated with the bottom of the transformer body (1).
  9. 9. The high-heat-dissipation oil-immersed transformer according to claim 1, wherein the heat dissipation mechanism (3) comprises a plurality of first heat dissipation pipes (301), the plurality of first heat dissipation pipes (301) are arranged on the inner side of the transformer body (1), the two sides of the first heat dissipation pipes (301) penetrate through the transformer body (1) and are provided with first heat dissipation cylinders (302), the inner side of the transformer body (1) is provided with a plurality of second heat dissipation pipes (303), the two ends of the plurality of second heat dissipation pipes (303) penetrate through the transformer body (1) and are provided with second heat dissipation cylinders (304), a plurality of side air inlets (305) are formed on the inner sides of the first heat dissipation cylinders (302) and the second heat dissipation cylinders (304), one side of each side air inlet (305) is provided with a first arc-shaped sheet (306), and the other side of each side air inlet (305) is provided with a second arc-shaped sheet (307).
  10. 10. The high heat dissipation oil-immersed transformer as recited in claim 2, wherein a plurality of second cooling fins (226) are installed on top of the first oil bin (203), and a plurality of first cooling fins (225) are installed on top of the second oil bin (204).

Description

High radiating oil-immersed transformer Technical Field The invention relates to the technical field of oil-immersed transformers, in particular to a high-heat-dissipation oil-immersed transformer. Background The transformer is core power equipment for converting electric energy between different voltage classes by utilizing an electromagnetic induction principle, the core consists of an iron core, windings, a shell and an insulating cooling medium, the lifting of voltage and the corresponding adjustment of current can be completed by changing the turns ratio of primary and secondary windings on the premise of not changing the frequency of alternating current, and meanwhile, the electric isolation of primary and secondary circuits is realized, so that the transformer is a key device for electric energy transmission, distribution and electric equipment adaptation in electric power transmission and distribution, industrial production and various electric systems. The high heat dissipation oil immersed transformer is electric energy conversion equipment of a core in an electric power system, on the basis of a common transformer principle, insulating oil is used as core insulation and cooling medium, core electric parts such as an iron core, a coil and the like are sealed in an oil tank, lifting conversion of voltage is realized through electromagnetic induction, heat generated by the iron core and the coil during operation is absorbed by the insulating oil, and heat exchange is completed through a natural convection or auxiliary heat dissipation structure. However, the existing high-heat-dissipation oil-immersed transformer has the following defects: When the oil immersed transformer dissipates heat, heat generated by the coil and the iron core is transferred to transformer oil, hot oil rises to enter the radiator to cool, cooled oil flows back to the lower part of the oil tank by gravity and enters the heating area again to absorb heat to form a continuous circulating cooling oil path, so that the oil pump is additionally arranged on the basis of the oil immersed transformer with high heat dissipation in the prior art, the flow speed of the oil body is increased by the oil pump to achieve the effect of accelerating the heat dissipation speed, but in actual use, the method can improve the flow speed and heat exchange efficiency of oil, but the impact force generated by the oil with high flow speed is easy to accelerate the damage to the iron core inside the transformer and the insulating layer on the outer surface of the coil, thereby accelerating insulation failure and increasing the maintenance cost and the possibility of electrical accidents. The present invention therefore proposes a high heat dissipation oil-immersed transformer in order to solve the problems set forth above. Disclosure of Invention The invention aims to provide a high-heat-dissipation oil immersed transformer, which adopts an oil-gas dual-circulation heat dissipation mode, a motor drives a chain wheel chain to drive a square ring plate formed by a shifting plate and a secondary shifting plate, hot oil around a coil is synchronously and upwards circulated to realize oil replacement and stabilize the temperature of the coil, a plurality of layers of ring plates can counteract the power of backflow oil, the flow of the oil and the stable heat exchange are ensured, the oil is pumped back to a transformer body by an oil pump after being cooled step by step through a plurality of sections of pipelines, meanwhile, the inner part of the transformer body is transversely and longitudinally provided with a heat dissipation pipe with a conical heat dissipation cylinder, the heat dissipation cylinder is provided with a staggered side air inlet and an arc-shaped sheet, hot air flow is accelerated by means of natural wind to be discharged, and the hot air flow can naturally flow out to form air circulation when no wind exists, so that the heat dissipation path is enriched, and the integral heat dissipation efficiency is improved. In order to achieve the aim, the invention provides the technical scheme that the high-heat-dissipation oil immersed transformer comprises a transformer body, a heat exchange mechanism and a heat dissipation mechanism, wherein the heat exchange mechanism is arranged on the outer side of the transformer body, and the heat dissipation mechanism is arranged on the top of the heat exchange mechanism; The heat exchange mechanism comprises a first chain, a first shifting plate and a second shifting plate, wherein the first chain is arranged on the outer side of the first shifting plate, the second shifting plate is arranged on the outer side of the first shifting plate, the first chain is used for driving the first shifting plate to rotate, and the first shifting plate is used for shifting the second shifting plate to move. Preferably, the heat exchange mechanism further comprises a first opening window, the number of the first open