CN219349976U

CN219349976U - Dustproof device of box-type transformer

Info

Publication number: CN219349976U
Application number: CN202320253323.6U
Authority: CN
Inventors: 卢磊; 李凡; 张孟; 张娇
Original assignee: Shaanxi Construction Engineering New Energy Co ltd
Current assignee: Shaanxi Construction Engineering New Energy Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-07-14
Anticipated expiration: 2033-02-20

Abstract

The utility model discloses a box transformer dust keeper, including the mounting box, the mounting box both sides rigid coupling has a plurality of blast pipes, be provided with dustproof subassembly in the blast pipe, dustproof subassembly is including the needle that discharges, the needle that discharges sets up the air intake at the blast pipe, needle electric connection is anodal, the negative pole that discharges, the air outlet of blast pipe is provided with adsorption part, adsorption part is including fixed frame, fixed frame inboard rigid coupling has the insulating plastic piece of linear arrangement, the inside of insulating plastic piece is provided with the graphite electrode layer, adjacent two insulating plastic pieces are respectively through graphite electrode layer switch-on anodal, the negative pole, the insulating plastic piece of switch-on positive electrode is provided with the convex part, the convex part contacts with the insulating plastic piece of switch-on negative pole. The utility model is energy-saving and environment-friendly, can increase the adsorption area under the condition of equal electric field uniformity, and can achieve better adsorption effect and be recycled for multiple times.

Description

Dustproof device of box-type transformer

Technical Field

The utility model belongs to the technical field of transformers, and relates to a dustproof device of a box-type transformer.

Background

Billions of mu of deserts and Gobi are distributed in northwest, north China and northeast and west areas of China, and the air quality is poor and floating dust is more due to the fact that local climate causes are combined. These floating dust, which is deposited after entering the inside of the box transformer, can cause the following problems to the box transformer: the air inlet and the air outlet are blocked, so that the box transformer can not timely dissipate heat to the surrounding air, and the internal temperature of the box transformer is too high, which is not beneficial to the safe operation of the box transformer; the mechanical harm, the floating dust belongs to mechanical active particles, the particles enter the box body to cause the blockage and corrosion of mechanical parts, and then the corrosion is generated due to acidic or alkaline chemical reaction generated in the high-temperature environment, so that the operation performance of the machine is affected; the electrical damage is caused by excessive dust accumulation, the insulation strength of electrical equipment is damaged, electrical breakdown short-circuit accidents are extremely easy to occur in the electrical operation process, for example, the transformer discharge can be caused by serious dust accumulation in a switch cabinet, and poor contact can be caused by serious dust accumulation in a contact of an electrical switch; meanwhile, the cleaning of maintenance personnel is not facilitated.

Patent number CN113782304a, "a dust-proof box type transformer" discloses a dust-proof box type transformer, it makes the brush hair on two pivots of movable plate and its periphery remove along first filter screen through setting up clearance subassembly in the in-process that removes, and the in-process brush hair that removes will sweep the dust on the side of first filter screen, and the dust after sweeping will fall to the inside of fixed frame, then discharges through the bar mouth to after the discharge, thereby can effectively avoid the dust to pile up on first filter screen. The device is that the filter screen filters, and the filter screen has the disadvantages that the particle diameter of filtering dust depends on the aperture of mesh, and the mesh is too big and can't thoroughly filter air, and the mesh is too little to be unfavorable for air circulation, especially in desert and gobi, must separate and adsorb the particulate matter more than 0.075 micron, and the filter screen obviously does not meet the requirements, thus aiming at the above problem, the utility model provides a technical scheme to realize the effect of reducing the dust in the box transformer substation, and make the box transformer substation safely and stably run.

Disclosure of Invention

The utility model aims to provide the dustproof device for the box-type transformer, which can separate and adsorb particles with the particle size of more than 0.075 microns, and realize the effect of reducing dust in the box transformer, so that the box transformer can safely and stably run, and maintenance personnel can ensure the dustproof effect by only periodically replacing the dustproof device.

The technical scheme of the utility model is that the dustproof device of the box-type transformer comprises a mounting box, wherein a transformer body is mounted in the mounting box, a plurality of blast pipes and air outlet pipes are fixedly connected to two sides of the mounting box, a fan is arranged at an air outlet of each blast pipe, the fan is electrically connected with a power supply through a motor, a dustproof component is arranged in a blast pipe, the dustproof component comprises a discharge needle, the discharge needle is arranged at an air inlet of the blast pipe, the discharge needle is electrically connected with a positive electrode and a negative electrode, an air outlet of the blast pipe is provided with an adsorption part, the adsorption part comprises a fixing frame, the shape of the fixing frame is identical to that of the blast pipe, the outer wall of the fixing frame is fixedly connected to the inner wall of the blast pipe, insulating plastic sheets in linear arrangement are fixedly connected to the inner side of the fixing frame, graphite electrode layers are arranged inside the insulating plastic sheets, the positive electrode and the negative electrode are respectively connected to the two adjacent insulating plastic sheets through the graphite electrode layers, the positive electrode is arranged, and the positive electrode is contacted with the insulating plastic sheet.

The utility model is also characterized in that:

an electric field polarization area is formed around the discharge needle, and floating dust entering the air supply pipe is charged after passing through the electric field polarization area and is adsorbed after entering an electric field adsorption area of the adsorption part along with air flow.

An air channel is formed between two adjacent insulating plastic sheets, conical protrusions are formed on the surfaces of the insulating plastic sheets, and the conical protrusions are distributed in the air channel.

The width of the air channel is 1-2 mm.

The graphite electrode layer is connected with the positive electrode and the negative electrode, and the voltage of the positive electrode and the negative electrode is DC 5500V-DC 6000V.

The air supply pipe is fixedly connected with the side wall of the split pipe, the air supply pipe is communicated with the inside of the split pipe, the air inlet pipe is fixedly connected with the air inlet pipe, and the air inlet pipe is communicated with the inside of the split pipe.

The air inlet pipe is internally provided with a V-shaped flow dividing plate, the flow dividing plate is arranged at the air outlet of the air inlet pipe, the end parts of the two ends of the flow dividing plate are respectively fixedly connected with the upper top wall and the lower bottom wall of the flow dividing pipe, and the center of the flow dividing plate protrudes towards the air outlet of the air inlet pipe.

The beneficial effects of the utility model are as follows:

the utility model is energy-saving and environment-friendly, and can increase the adsorption area under the condition of equal electric field uniformity, so that better adsorption effect can be achieved, and the utility model can be recycled for multiple times. The adsorption device has the characteristics of simple and reasonable structure, reliable performance, low manufacturing cost, easiness in production, easiness in realization, strong adsorption capacity and the like, and is high in practicability.

Drawings

FIG. 1 is a schematic view of a dust-proof device for a box-type transformer according to the present utility model;

FIG. 2 is an enlarged view of the dustproof device of the box-type transformer at A;

FIG. 3 is a front view of the suction part of the dust-proof device of the box-type transformer of the present utility model;

FIG. 4 is a schematic view of a dust-proof device for a box-type transformer according to the present utility model;

FIG. 5 is a top view of a dust keeper of a box transformer of the present utility model;

in the figure, 1, a mounting box, 2, an air supply pipe, 3, an air outlet pipe, 4, a fan, 5, a motor, 6, a dustproof component, 6-1, a discharge needle, 6-2, an electric field polarization area, 6-3, an adsorption part, 6-4, an electric field adsorption area, 6-3-1, a fixing frame, 6-3-2, an insulating plastic sheet, 6-3-3, a graphite electrode layer, 6-3-4, a convex part, 6-3-5, an air channel, 6-3-6, conical bulges, 7, a shunt pipe, 8, an air inlet pipe, 9 and a shunt plate.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

The utility model relates to a dustproof device for a box-type transformer, which is shown in figure 1, and comprises a mounting box 1, wherein the outer wall of the mounting box 1 is provided with an openable and closable door, the bottom of the mounting box is fixedly connected with a support, and a transformer body is mounted in the mounting box 1. The installation case 1 both sides rigid coupling has a plurality of blast pipes 2 and air-out pipe 3, and the air outlet of blast pipe 2 is provided with fan 4, and fan 4 passes through motor 5 drive, and motor 5 electric connection has the power, switch on motor 5's power, and fan 4 begins work, and fan 4 produces the air pressure difference, and blast pipe 2 draws air from the outside and gets into installation case 1 heat transfer, and air is discharged from air-out pipe 3 after the heat transfer.

As shown in fig. 2, 3 and 4, a dust-proof component 6 is arranged in the pipeline of the blast pipe 2, and the dust-proof component 6 filters floating dust mixed in the fed heat exchange air. The dustproof assembly 6 comprises a discharge needle 6-1, the discharge needle 6-1 is arranged at an air inlet of the air supply pipe 2, the discharge needle 6-1 is electrically connected with an anode and a cathode, an electric field polarization area 6-2 is formed around the discharge needle 6-1, and floating dust entering the air supply pipe 2 is charged after passing through the electric field polarization area 6-2.

The air outlet of the air supply pipe 2 is provided with an adsorption part 6-3, and floating dust with charges enters an electric field adsorption area 6-4 of the adsorption part 6-3 along with air flow and is adsorbed. The adsorption part 6-3 comprises a fixing frame 6-3-1, the shape of the fixing frame 6-3-1 is the same as that of the blast pipe 2, the outer wall of the fixing frame 6-3-1 is fixedly connected to the inner wall of the blast pipe 2, the inner side of the fixing frame 6-3-1 is fixedly connected with insulating plastic sheets 6-3-2 which are arranged in a straight line and have toughness, the insulating plastic sheets 6-3-2 are rectangular plastic sheets, an interlayer is arranged in the insulating plastic sheets 6-3-2, graphite electrode layers 6-3-3 are arranged in the insulating plastic sheets 6-3-2, the graphite electrode layers 6-3-3 are placed in the interlayer, and the adjacent two insulating plastic sheets 6-3-2 are respectively connected with an anode and a cathode through the graphite electrode layers 6-3-3.

An air channel 6-3-5 is formed between two adjacent insulating plastic sheets 6-3-2, conical protrusions 6-3-6 are arranged on the surfaces of the insulating plastic sheets 6-3-2, conical protrusions 6-3-6 are distributed on the air channel 6-3-5, protruding portions 6-3-4 are arranged on the insulating plastic sheets 6-3-2 connected with the positive electrode, and the protruding portions 6-3-4 are in contact with the insulating plastic sheets 6-3-2 connected with the negative electrode.

Considering that the temperature of the transformer rises too fast, a large amount of air is required to enter the installation box for heat exchange, a large amount of floating dust is prevented from being inhaled, the length of the insulating plastic sheet 6-3-2 is increased for filtering, and the length of the air supply pipe 2 is correspondingly increased, as shown in fig. 5, the scheme adopts another mode, a plurality of air supply pipes 2 are connected in parallel, the device is provided with a cuboid type split pipe 7, a plurality of air supply pipes 2 are arranged in parallel, an air inlet of the air supply pipe 2 is fixedly connected to the side wall of the split pipe 7, the air supply pipe 2 is communicated with the inside of the split pipe 7, an air inlet pipe 8 is fixedly connected to the outer wall of the split pipe 7, and the air inlet pipe 8 is communicated with the inside of the split pipe 7.

The air inlet pipe 31 is internally provided with a V-shaped flow dividing plate 9, the flow dividing plate 9 is arranged at the air outlet of the air inlet pipe 8, the end parts at the two ends of the flow dividing plate 9 are respectively fixedly connected with the upper top wall and the lower bottom wall of the flow dividing pipe 7, and the center of the flow dividing plate 9 protrudes towards the air outlet of the air inlet pipe 8. After the air passes through the turbulence of the flow dividing plate 9, the air flow can more gently enter the air supply pipe, the air flow speed is slowed down, the time side length of the air stay in the air supply pipe 2 is longer, and then the heat exchange air filtering effect is further improved.

The utility model relates to a dustproof device of a box-type transformer, which has the following working principle:

the air passes through the discharge needle 6-1, the needle tip and the needle tail of the discharge needle 6-1 are discharged to form an electric field polarization area 6-2, so that fly ash, pollutants and small molecular particles in the air are rapidly polarized, the polarized fly ash, pollutants and small molecular particles move from an air inlet to an air outlet of the air supply pipe, in the figure, the positive and negative high voltages pass through the electric field adsorption area 6-4 of the adsorption part 6-3, and when the insulating plastic sheet 6-3-2 with the graphite electrode layer 6-3 is added, the positive and negative high voltages are closed through the conical protrusions 6-3-6, a uniform electromagnetic field is generated, and the fly ash, the polarized pollutants and the small molecular particles passing through an air channel are adsorbed on the adsorption sheet, so that the aim of removing particles in the air is fulfilled, and the fly ash above 0.01 micrometer is effectively removed.

The utility model relates to a dustproof device of a box-type transformer, which has the advantages that:

the utility model has the advantages that the discharge needle is arranged at the air inlet of the air supply pipe, the positive electrode and the negative electrode are connected through the discharge needle, the electric field polarization area is formed, the discharge is aimed at the air discharge, tiny particles in the air are charged instantly after passing through the electric field polarization area, then the tiny particles enter the electric field adsorption area of the adsorption part along with the air flow and are adsorbed, the adsorption efficiency of the adsorption device is greatly improved, meanwhile, the insulating plastic sheet wrapping the semiconductor graphite electrode is arranged, the tips of the insulating plastic sheet are closed, a uniform electromagnetic field is generated, the adsorption area of the electromagnetic field is more uniform due to the action of tip tiny current, and the adsorption area is greatly increased.

The utility model connects a plurality of blast pipes in parallel for filtering the sucked air at the same time, which is equivalent to increasing the flow cross section, and reduces the air flow rate on the premise of unchanged air flow, thereby ensuring the purifying effect on the sucked air, and the blast pipes can be increased according to the air suction amount of the engine to ensure the purifying effect and the cost.

Claims

1. The utility model provides a box transformer dust keeper, includes install bin (1), install the transformer body in install bin (1), install bin (1) both sides rigid coupling has a plurality of blast pipes (2) and air-out pipe (3), the air-out mouth of blast pipe (2) is provided with fan (4), fan (4) are through motor (5) drive, motor (5) electric connection has the power, characterized in that, be provided with dustproof subassembly (6) in blast pipe (2) pipeline, dustproof subassembly (6) are including discharge needle (6-1), discharge needle (6-1) set up at the air intake of blast pipe (2), discharge needle (6-1) electric connection positive pole, negative pole, the air-out mouth of blast pipe (2) is provided with adsorption part (6-3), adsorption part (6-3) are including fixed frame (6-3-1), the shape of fixed frame (6-3-1) is the same with blast pipe (2), and fixed frame (6-3-1) outer wall rigid coupling is at blast pipe (2) inner wall (6-3-1) inner wall, and fixed inside plastic sheet (6-3) rigid coupling of blast pipe (2), the inside of each insulating plastic sheet (6-3-2) is provided with a graphite electrode layer (6-3-3), two adjacent insulating plastic sheets (6-3-2) are respectively connected with a positive electrode and a negative electrode through the graphite electrode layers (6-3-3), each insulating plastic sheet (6-3-2) connected with the positive electrode is provided with a convex part (6-3-4), and the convex parts (6-3-4) are in contact with the insulating plastic sheets (6-3-2) connected with the negative electrode.

2. A dust-proof device for a box-type transformer according to claim 1, wherein an electric field polarization area (6-2) is formed around the discharge needle (6-1), and floating dust entering the blast pipe (2) is charged after passing through the electric field polarization area (6-2) and adsorbed after entering an electric field adsorption area (6-4) of the adsorption part (6-3) along with air flow.

3. A dust-proof device for a box-type transformer according to claim 1, characterized in that an air channel (6-3-5) is formed between two adjacent insulating plastic sheets (6-3-2), and the surface of the insulating plastic sheet (6-3-2) is provided with conical projections (6-3-6), and the conical projections (6-3-6) are distributed in the air channel (6-3-5).

4. A dust-proof device for a box-type transformer according to claim 3, characterized in that the width of the air channel (6-3-5) is 1-2 mm.

5. A dust-proof device for a box-type transformer according to claim 3, wherein the graphite electrode layer (6-3-3) is connected with the positive electrode and the negative electrode, and the voltage of the positive electrode and the negative electrode is DC 5500V-DC 6000V.

6. The dustproof device for the box-type transformer according to claim 1, further comprising a cuboid-shaped shunt tube (7), wherein a plurality of blast pipes (2) are arranged in parallel, an air inlet of each blast pipe (2) is fixedly connected to the side wall of each shunt tube (7), each blast pipe (2) is communicated with the inside of each shunt tube (7), an air inlet pipe (8) is fixedly connected to the outer wall of each shunt tube (7), and the air inlet pipe (8) is communicated with the inside of each shunt tube (7).

7. The dustproof device for the box-type transformer according to claim 6, wherein a V-shaped splitter plate (9) is arranged in the air inlet pipe (8), the splitter plate (9) is arranged at the air outlet of the air inlet pipe (8), two end parts of the splitter plate (9) are fixedly connected to the upper top wall and the lower bottom wall of the splitter pipe (7) respectively, and the center of the splitter plate (9) protrudes towards the air outlet of the air inlet pipe (8).