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CN-224203911-U - Step-up isolation transformer for offshore wind turbine generator

CN224203911UCN 224203911 UCN224203911 UCN 224203911UCN-224203911-U

Abstract

The application provides a boosting isolation transformer for an offshore wind turbine, which comprises a transformer body, a shell for wrapping the transformer body, wherein the shell comprises side plates, radiating frames are arranged on the adjacent three side plates, radiating blades which are transversely arranged on the radiating frames, a driving component arranged at the top of the radiating frames is connected with a control device of the radiating blades and the driving component, and the control device comprises a support column penetrating through the central line of the radiating blades in the x direction, a traction rope connected with a clamping part and separated at two sides of the support column, and a baffle plate arranged on the bottom surface of the radiating blades and connected with the traction rope. According to the application, the heat dissipation frame is arranged on the transformer shell, and the cooperative optimization of the efficient heat dissipation and protection functions is realized through the modular driving structure and the design of the adjustable heat dissipation blades, so that the problem that the offshore transformer shell in the prior art is difficult to consider heat dissipation and rain protection is solved.

Inventors

  • HA YUE
  • ZHANG XIAO
  • ZHANG YAN
  • SUN YANPING
  • TANG SIJIE
  • LI JUAN
  • CHEN TAI
  • LI AIQIANG

Assignees

  • 银川欣安瑞电气有限公司

Dates

Publication Date
20260505
Application Date
20250519

Claims (8)

  1. 1. A step-up isolation transformer for an offshore wind turbine, comprising: A transformer body (1); The transformer comprises a shell (2) for coating the transformer body (1), wherein the shell (2) comprises side plates (21) for coating the periphery of the transformer body (1), heat dissipation frames (22) are arranged on the adjacent three side plates (21), and heat dissipation blades (23) which are transversely arranged are arranged on the heat dissipation frames (22); The driving assembly (3) is arranged at the top of the heat dissipation frame (22), the driving assembly (3) comprises a shell (31), a double-shaft motor (32) arranged inside the shell (31), a transmission shaft (33) connected with an output shaft of the double-shaft motor (32) through a coupling, a winch (34) arranged on the transmission shaft (33), and clamping parts (35) distributed on the surface of the winch (34) in a circumferential array manner; The control device (4) is used for connecting the radiating blade (23) and the driving assembly (3), wherein the control device (4) comprises a support column (41) penetrating through the X-direction central line of the radiating blade (23), traction ropes (42) connected with the clamping parts (35) and separated on two sides of the support column (41), and baffle plates (43) arranged on the bottom surface of the radiating blade (23) and connected with the traction ropes (42).
  2. 2. Step-up isolation transformer for offshore wind turbines according to claim 1, wherein said clamping portion (35) comprises two clamping blocks (351) arranged symmetrically, and a clamping groove (352) arranged between two clamping blocks (351).
  3. 3. Step-up isolation transformer for offshore wind turbines according to claim 2, wherein the direction of the clamping groove (352) is always radially perpendicular to the winch (34).
  4. 4. The step-up isolation transformer for the offshore wind turbine generator according to claim 1, wherein the traction rope (42) comprises a traction rope body (421) which is clamped in a clamping groove (352) of the clamping part (35) and two end parts of which penetrate through the bottom of the shell (31), and rigid connecting sleeves (422) sleeved at two ends of the traction rope body (421), the end parts of the rigid connecting sleeves (422) are hinged with double-fulcrum control rods (423), and the double-fulcrum control rods (423) are separated from two sides of the support column (41) at an included angle of 120 degrees along the y-axis direction.
  5. 5. Step-up isolation transformer for offshore wind turbines according to claim 4, wherein the baffle (43) is connected to the dual fulcrum control lever (423) and engages the bottom surface of the cooling fin (23).
  6. 6. The step-up isolation transformer for an offshore wind turbine generator according to claim 4, wherein a rectangular guide window (311) is formed in the bottom of the housing (31), and the haulage rope body (421) penetrates through the rectangular guide window (311).
  7. 7. The step-up isolation transformer for the offshore wind turbine generator according to claim 4, wherein a double-row tapered roller bearing (4221) is rotatably arranged at the end part of the rigid connection sleeve (422), an annular limiting groove (4222) is formed in the outer ring of the double-row tapered roller bearing (4221), and the traction rope body (421) is embedded in the annular limiting groove (4222) to form circumferential constraint.
  8. 8. Step-up isolation transformer for offshore wind turbines according to claim 1, wherein the side walls of the cooling fins (23) are connected to the side walls of the cooling frame (22) by fasteners.

Description

Step-up isolation transformer for offshore wind turbine generator Technical Field The utility model relates to the technical field of offshore transformers, in particular to a boosting isolation transformer for an offshore wind turbine generator. Background The marine step-up isolation transformer is power equipment specially designed for marine environments, is mainly used for the scenes of marine wind power, oil gas platforms, ships and the like, and has the core functions of raising the low voltage output by a generator or a power supply to high voltage (such as from 690V to 33kV or higher) suitable for long-distance transmission or grid connection, and simultaneously blocking the current of a grounding loop, inhibiting harmonic interference and improving the safety of a system by isolating primary side windings and secondary side windings. The transformer is required to adopt high-strength anti-corrosion materials (such as epoxy resin coating and stainless steel shell) to resist corrosion of salt fog, humidity and extreme temperature difference, and meanwhile, a corrosion-resistant shell is additionally arranged on the transformer so as to avoid direct contact of rainwater and the like with the transformer body, and forced air cooling is provided to ensure long-term stable operation. In the prior art, the design of the protective shell of the offshore boosting isolation transformer faces multiple environmental adaptability contradictions that on one hand, a complete waterproof barrier needs to be constructed to resist salt spray erosion and rainwater penetration peculiar to marine environments, so that the area of a radiating hole needs to be reduced to prevent rainwater from directly falling onto a transformer body through the radiating hole, and on the other hand, enough heat exchange efficiency needs to be ensured to cope with continuous insolation environments of up to 55 ℃ in tropical sea areas, so that forced air cooling equipment is arranged to improve the radiating efficiency while the area of the radiating hole needs to be increased. However, in the practical use process, the service life of the air-cooled equipment in long-term operation is far lower than that of the transformer body, meanwhile, due to the environmental influence, the transformer is difficult to overhaul, and when the air-cooled equipment is damaged, the transformer is limited by a smaller radiating hole area and can fail due to overlarge temperature rise. Disclosure of utility model The utility model aims to solve the problem that in the prior art, the heat dissipation and the rain protection of the offshore transformer shell are difficult to be achieved simultaneously. The application provides a boosting isolation transformer for an offshore wind turbine, which comprises a transformer body, a shell for wrapping the transformer body, wherein the shell comprises side plates for wrapping the periphery of the transformer body, radiating frames are arranged on the adjacent three side plates, radiating blades transversely distributed on the radiating frames, a driving assembly arranged on the top of the radiating frames, the driving assembly comprises a shell, a double-shaft motor arranged in the shell, a transmission shaft connected with an output shaft of the double-shaft motor through a shaft coupling, a winch arranged on the transmission shaft, clamping parts distributed on the circumferential array of the surface of the winch, a control device for connecting the radiating blades with the driving assembly, and the control device comprises support columns penetrating through central lines of the radiating blades in the x direction, a traction cable connected with the clamping parts and arranged on the two sides of the support columns in a separated mode, and a baffle plate arranged on the bottom surface of the radiating blades and connected with the traction cable. According to the application, the radiating frame is arranged on the transformer shell, the cooperative optimization of high-efficiency heat radiation and protection functions is realized through the modularized driving structure and the design of the adjustable radiating blades, wherein the radiating blades arranged on the radiating frame are controlled to be opened and closed by the driving assembly and the control device, when the transformer shell is rainy, the opening degree of the radiating blades is reduced, the radiating area is further reduced, the situation that rainwater directly passes through the shell and falls on the transformer body to cause corrosion of the transformer body is prevented, when the transformer shell is not rainy, the opening and closing degree of the radiating blades is increased, the radiating capacity of the transformer is enhanced, and the problem that the offshore transformer shell is difficult to be simultaneously cooled and rainproof in the prior art is solved. Further, in order to clamp and fix the traction rope and strengthen t