CN-120600458-B - Flame-retardant power transformer capable of improving stability in operation process

Abstract

The invention relates to the technical field of power transformers, and discloses a flame-retardant power transformer capable of improving stability in an operation process, which comprises a protective shell, wherein a transformer main body is arranged in the protective shell, an air cooler is arranged at the bottom of the transformer main body, the bottom fixedly connected with protection casing in the protection casing, the symmetry is equipped with two air inlet spare in the protection casing, is provided with dust removal mechanism on the air inlet spare, installs drive unit on the protection casing, and drive unit is used for driving air inlet spare and dust removal mechanism rotation. The part position of the dustproof ring net is shielded through the arc-shaped seat, and the air inlet piece is in partial air flow entering the arc-shaped seat and the arc-shaped groove when in air inlet, and the partial air flow is changed into vertical movement from horizontal movement and is blown to the interception surface of the dustproof ring net, so that impurities intercepted on the surface of the dustproof ring net can be blown down into the air guide pipe and discharged to the outside, thereby realizing non-contact cleaning, avoiding workpiece loss and reducing working noise.

Inventors

• ZHA FENGWEI
• YU JIAN
• Zhao Qiandong

Assignees

• 常州市瑾瑜精密科技有限公司

Dates

Publication Date

20260512

Application Date

20250618

Claims (6)

1. 1. The flame-retardant power transformer capable of improving stability in the operation process comprises a protective shell, wherein a transformer main body is arranged in the protective shell, and an air cooler is arranged at the bottom of the transformer main body; the top of the protective cover is symmetrically provided with two through holes, the dustproof ring net and the through holes are concentrically arranged, the upper side annular plate is in rotary contact with the protective cover, the bottom of the lower side annular plate is rotationally connected with a first base which is in a major arc structure, the first base is fixedly connected with the inner bottom of the protective shell, the first base is annularly and equidistant fixedly connected with a plurality of second bases, and the rotating plate is rotationally connected with the second bases; The air inlet piece comprises two annular plates which are vertically and concentrically arranged, a plurality of air deflectors are fixedly connected between the two annular plates at equal intervals in an annular shape, a dustproof ring net is fixedly connected on the inner annular wall of the annular plate in a downward extending mode, the annular plates on the lower side are rotatably connected to the bottom of a protecting shell, a plurality of air deflectors are annularly and uniformly arranged between the two annular plates, the air deflectors are arranged between two adjacent air deflectors, one end of each air deflector is rotatably connected with the annular plate, and an elastic piece is commonly connected between each air deflector and one air deflector; The dust removing mechanism comprises a dust blowing component, the dust blowing component comprises a rotating plate which is arranged at the bottom of a lower side circular plate and is in a circular plate shape, an arc-shaped seat which is in a cavity structure is fixedly connected to the top surface of the rotating plate, the arc-shaped seat is close to the outer side wall of the dustproof ring net, air inlets are formed in two ends of the outer arc side of the arc-shaped seat, an air guide opening is formed in the middle of the inner arc side of the arc-shaped seat, an air guide pipe is fixedly connected to the bottom of the arc-shaped seat, the air guide pipe fixedly penetrates through the rotating plate and extends downwards, the arc-shaped seat shields the position where the dustproof ring net is located, and when the air inlet piece rotates, part of wind power of the air inlet is intercepted, flows through the air guide opening and guides the air pipe, and the position where the dustproof ring net is shielded is subjected to blowing dust removal; The novel dust removal device comprises a protective cover, and is characterized in that a driving unit is mounted on the protective cover and used for driving an air inlet piece and a dust removal mechanism to rotate, the driving unit comprises a motor fixedly penetrating through the protective cover, a first gear is fixedly connected to the output end of the motor, a second gear is connected to one side of the first gear in a meshed mode, two gears three which are meshed with each other are arranged on two symmetrical sides of the second gear, the second gear is meshed with a similar gear in a three-phase mode, the second gear and the third gear are rotatably connected with the bottom of a protective cover, an inner gear ring is fixedly connected to the bottom of a circular plate on the lower side of the protective cover, an outer gear ring is fixedly connected to the outer side wall of the circular plate, and the inner gear ring and the outer gear ring are meshed with corresponding gears in a three-phase mode respectively.
2. 2. The flame retardant power transformer capable of improving stability in a running process according to claim 1, wherein an arc-shaped block is fixedly connected to the inner wall of the outer arc side of the arc-shaped seat, and air guide inclined planes are arranged at two ends of the arc-shaped block.
3. 3. The flame-retardant power transformer capable of improving stability in the operation process according to claim 1, wherein the dust blowing component further comprises an arc-shaped groove plate which is arranged close to the inner side wall of the dustproof ring network, the arc-shaped groove plate is fixedly connected with the rotating plate, and an air guide groove which is communicated with the arc-shaped seat and the arc-shaped groove plate is formed in the rotating plate; And a baffle plate is horizontally and fixedly connected in the arc-shaped seat.
4. 4. The flame retardant power transformer capable of improving stability in a running process according to claim 1, wherein the bottom of the protective shell is provided with a plurality of arc-shaped holes on the outer side of the air inlet piece, the bottom of the protective shell is provided with round holes on the lower side of the rotating plate, and the air guide pipe penetrates through the round holes and extends to the lower side of the protective shell.
5. 5. The flame-retardant power transformer capable of improving stability in a running process according to claim 1, wherein the dust removing mechanism further comprises a pressurizing assembly, the pressurizing assembly comprises a pressurizing pipe fixedly connected with the lower end of the air guide pipe, and the pressurizing pipe is composed of a rectangular pipe body and a bucket-shaped pipe body.
6. 6. The flame retardant power transformer capable of improving stability in a running process according to claim 5, wherein a baffle is rotatably connected to one side, facing the bucket-shaped pipe body, of the rectangular pipe body, a dust discharging piece is rotatably connected to the other side of the rectangular pipe body, the dust discharging piece comprises an interception plate in an arc-shaped structure and a T-shaped plate fixedly connected to the lower end of the interception plate, a plurality of interception holes are formed in the interception plate, and one end of the T-shaped plate is in abutting fit with the pressurizing pipe.

Description

Flame-retardant power transformer capable of improving stability in operation process Technical Field The invention relates to the technical field of power transformers, in particular to a flame-retardant power transformer capable of improving stability in an operation process. Background The power transformer is a static electric device for converting an alternating voltage (current) with a certain value into a voltage (current) with the same frequency but different values through electromagnetic induction, wherein the dry power transformer adopts an oil-free design and uses epoxy resin as an insulating medium, so that the dry power transformer can be suitable for places with strict fireproof requirements. The dry-type power transformer mainly comprises iron core, winding, insulation system, cooling device, shell, and the through-hole is offered at both ends about the shell and is used for air inlet and heat dissipation respectively, and when outdoor environment used, the transformer very easily produced high temperature operating mode, if the shell through-hole is less, then air inlet, heat dissipation difficulty to lead to the inside unable ideal temperature environment that drops in casing, influence the steady operation of transformer, if the shell through-hole is great, then need set up the protection network in the through-hole department for intercept the protection to external impurity, and the protection network has the jam probably in long-term use, consequently needs periodic cleaning or change. The utility model discloses a dry-type power transformer in prior art bulletin number CN 119028701A's patent, when can entering the air through dustproof portion, intercept dust etc. to drive dustproof portion up-and-down vibration through the circulation unit, on the one hand can reduce the adsorption affinity of dust on dustproof portion, and can clear up the dust on dustproof portion through cleaning portion, when guaranteeing dustproof effect of dustproof portion, can reduce the influence that the dust entered the air, be favorable to the cooling to the transformer. The dust collector has the following defects that the surface of the dust-proof plate is scraped and cleaned through the movement of the scraping plate, but the cleaned dust is still adsorbed on one side of the air inlet surface of the dust-proof plate under the action of suction force and cannot fall off, meanwhile, the scraping plate is in friction contact with the dust-proof plate, working noise is generated, workpiece loss is generated, and periodic replacement and maintenance are required. Disclosure of Invention In view of the problems of noise and workpiece loss generated during cleaning of the dust-proof plate in the prior art, a flame-retardant power transformer capable of improving stability in the operation process is provided. The dust-blowing assembly is used for shielding the dust-proof ring net, part of wind power in the air inlet interception piece is used for blowing downwards to the blocking section of the dust-proof ring net, sundries on the dust-proof ring net are removed, and non-contact low-noise cleaning is achieved. The technical scheme of the invention is that the flame-retardant power transformer capable of improving stability in the operation process comprises a protective shell, wherein a transformer main body is arranged in the protective shell, an air cooler is arranged at the bottom of the transformer main body, a protective cover is fixedly connected to the bottom in the protective shell, two air inlet pieces are symmetrically arranged in the protective cover, and a dust removing mechanism is arranged on each air inlet piece; The air inlet piece comprises two annular plates which are vertically and concentrically arranged, a plurality of air deflectors are fixedly connected between the two annular plates at equal intervals in an annular shape, a dustproof ring net is fixedly connected on the inner annular wall of the annular plate in a downward extending mode, and the annular plate on the lower side is rotatably connected to the bottom of the protective shell; The dust removing mechanism comprises a dust blowing component, the dust blowing component comprises a rotating plate which is arranged at the bottom of a lower side circular plate and is in a circular plate shape, an arc-shaped seat which is in a cavity structure is fixedly connected to the top surface of the rotating plate, the arc-shaped seat is close to the outer side wall of the dustproof ring net, air inlets are formed in two ends of the outer arc side of the arc-shaped seat, an air guide opening is formed in the middle of the inner arc side of the arc-shaped seat, an air guide pipe is fixedly connected to the bottom of the arc-shaped seat, the air guide pipe fixedly penetrates through the rotating plate and extends downwards, the arc-shaped seat shields the position where the dustproof ring net is located, and when the air inlet piece rotates,