CN218183798U - A three-phase high-voltage power supply for bag dust removal and pre-charging - Google Patents

Abstract

The utility model discloses a three-phase high-voltage power supply for bag dust removal and pre-charging. The IGBT module is provided with a heat-conducting copper plate to connect with the heat dissipation backplane. The dust removal and heat dissipation assembly includes a dust removal board, a drive assembly and fan blades. The dust removal board is fixed at the end of the drive assembly. The dust removal The plate is equipped with a gear rack and a gear meshing transmission. The gear drives the fan blade to rotate and blows and dissipates heat to the heat dissipation backplane. The dust on the heat dissipation backplane is cleaned through the vertically movable dust cleaning plate, which can avoid dust accumulation due to dust accumulation. The heat dissipation effect caused by it is not good; the movement of the dust removal plate drives the fan blade to rotate, which can increase the heat dissipation effect on the one hand, and blow off the scraped dust on the other hand; the design of the deflector can be blown out by the wind blade The wind blows to the lower area of the dust cleaning board at the same time, and the heat dissipation effect is better.

Description

A three-phase high-voltage power supply for bag dust removal and pre-charging

technical field

The utility model relates to the field of power supply equipment, in particular to a three-phase high-voltage power supply for bag dust removal and pre-charging.

Background technique

When the high-frequency power supply works at full frequency and full power for a long time, the temperature of the IGBT is very high, especially in the high temperature season, the temperature rise of the IGBT will reach more than 90°C, and long-term work will increase the failure rate of the IGBT module and reduce the life of the module. Under the premise that the load is small and does not affect emissions, in order to make the high-frequency power supply work stably and well, coal-fired power plants will adopt frequency reduction measures, which will lead to a reduction in dust removal efficiency.

For example, the patent No. CN208460749U discloses a high-frequency power supply IGBT cooling structure for electric dust removal, which only transmits the heat generated by the IGBT to the radiator, and the cooling ribs on the back have a larger contact area with the air to achieve natural cooling.

However, in some areas, the air is humid, and when the dust adheres to the heat dissipation ribs, it is not easy to fall off and accumulate. After that, the heat dissipation effect of the radiator will drop sharply, which cannot meet the production needs.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a three-phase high-voltage power supply for bag dust removal and pre-charging to solve the above problems.

The technical solution adopted by the utility model to solve the technical problem is: a three-phase high-voltage power supply for bag dust removal and pre-charging, including an IGBT module, a heat dissipation backplane and ash cleaning and heat dissipation components. The IGBT module is fixed on the On the heat dissipation backplane, the IGBT module is provided with a heat conduction copper plate to connect with the heat dissipation backplane. The dust removal and heat dissipation assembly includes a dust removal board, a drive assembly and fan blades, and the dust removal board is fixed on the At the end of the drive assembly, the dust cleaning plate is provided with a rack and a gear for meshing transmission, and the gear drives the fan blade to rotate and blows air to the heat dissipation back plate to dissipate heat.

In the above technical solution, further, the heat dissipation back plate is provided with a plurality of heat dissipation ribs, and the ash removal plate is provided with a plurality of ash removal protrusions to slide longitudinally between the heat dissipation ribs.

In the above technical solution, further, an ash-falling cavity is arranged in the middle of the ash-clearing convex part, the ash-falling cavity is a through hole, and the ash-falling cavity is set to a guide chute near the side of the heat dissipation back plate .

In the above technical solution, further, a deflector is provided at the bottom of the cleaning board.

In the above technical solution, further, the heat dissipation backboard is arranged between the upper cover plate and the lower top plate, the upper cover plate and the lower top plate are connected by guide columns, and the dust cleaning plate is slidably arranged on the on the guide post.

In the above technical solution, further, an air guide cover is provided on the upper cover, one end of the air guide cover is connected to the heat dissipation backplane, and the other end is used as a fan blade to rotate and enter the wind.

In the above technical solution, further, a support seat is provided on the upper cover plate, and a rotating shaft is rotatably arranged on the support seat, and the gear and the fan blade are fixedly arranged on the rotating shaft.

The beneficial effects of the utility model are as follows: 1. Clean the dust on the heat dissipation backboard through the vertically movable dust removal board, which can avoid problems such as poor heat dissipation caused by dust accumulation; 2. The dust removal board moves while Drive the wind blades to rotate, on the one hand, it can increase the heat dissipation effect, on the other hand, it can blow off the scraped dust; 3. The design of the deflector can blow the wind blown by the wind blades to the lower area of the dust cleaning board at the same time, and the heat dissipation effect is improved. better.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the state schematic diagram of the facade of the present utility model.

Fig. 2 is a structural schematic diagram of the back of Fig. 1 of the present utility model.

Fig. 3 is a schematic diagram of the internal structure of Fig. 1 of the present invention.

In the figure, 1. IGBT module, 11. Heat conduction bronze medal, 2. Heat dissipation backplane, 21. Heat dissipation rib, 3. Ash removal heat dissipation component, 31. Ash removal plate, 311. Ash removal convex part, 312. Ash falling cavity , 313. Guide chute, 314. Deflector, 32. Drive assembly, 33. Wind vane, 34. Wind deflector, 35. Gear, 36. Rack, 4. Upper cover plate, 41. Support seat, 5 . Lower top plate, 6. Guide column.

detailed description

Referring to Figure 1-3, a three-phase high-voltage power supply for bag dust removal and pre-charging is shown, including an IGBT module, a heat dissipation backplane 2 and ash cleaning and heat dissipation assembly 3, and the IGBT module is fixed on the heat dissipation backplane through a stopper 2, the IGBT module is provided with a heat conduction copper plate 11 connected to the heat dissipation backplane 2, the dust removal and heat dissipation assembly 3 includes a dust removal board 31, a drive assembly 32 and fan blades 33, and the dust removal board 31 is fixed At the end of the driving assembly 32 , the cleaning board 31 is provided with a rack 36 meshed with a gear 35 for transmission, and the gear 35 drives the blade 33 to rotate and blows air to the heat dissipation backplane 2 to dissipate heat.

In order to improve the heat dissipation effect and increase the heat dissipation area, the heat dissipation backplane 2 is provided with several heat dissipation ribs 21 .

In order to remove the dust on the heat dissipation ribs 21, the soot removal plate 31 is provided with a plurality of dust removal protrusions 311 to slide longitudinally between the heat dissipation ribs 21, and the heat dissipation back plate 2 is provided with an upper cover plate 4 and a lower top plate 5 In between, the upper cover plate 4 and the lower top plate 5 are connected by a guide column 6 , and the dust cleaning plate 31 is slidably arranged on the guide column 6 .

In order to prevent dust from accumulating on the dust-cleaning board 31, a dust-falling cavity 312 is arranged in the middle of the dust-cleaning protrusion 311, and the dust-falling cavity 312 is a through hole, and the dust-falling cavity 312 is close to the heat dissipation backboard 2. One side is set to the guide chute 313.

In order to make the area at the bottom of the soot cleaning plate 31 also be blown by the wind, the bottom of the soot cleaning plate 31 is provided with a deflector 314, so that the wind is guided outward by the guide chute 313, and the deflector 314 will blow outwards. The direction of the wind is drawn back inward so that the area at the bottom of the cleaning board 31 can also be blown by the wind.

In order to make the heat dissipation effect better, the upper cover plate 4 is provided with a support seat 41, and the support seat 41 is provided with a rotating shaft for rotation, and the gear 35 and the fan blade 33 are fixedly arranged on the rotating shaft. The upper cover 4 is provided with an air guide cover 34 , one end of the air guide cover 34 is connected to the heat dissipation backplane 2 , and the other end is used as the fan blade 33 to rotate and enter the wind.

According to the above design, the dust on the heat dissipation backboard is cleaned by the vertically movable dust removal board, which can avoid problems such as poor heat dissipation caused by dust accumulation; the movement of the dust removal board drives the fan blades to rotate at the same time. It can increase the heat dissipation effect, and on the other hand, it can blow off the scraped dust; the design of the deflector can blow the wind blown by the fan blades to the lower area of the dust cleaning board at the same time, and the heat dissipation effect is better.

The above is only a preferred embodiment of the utility model, and does not make any formal restrictions on the utility model. On the basis of not departing from the technical solution of the utility model, any simple modifications, equivalent changes or modifications made shall fall within the scope of the present utility model. Into the scope of protection of the utility model.

Claims (7)

1. The utility model provides a sack removes three-phase high voltage power supply for charge in advance, includes IGBT module, heat dissipation backplate and deashing radiator unit, the IGBT module passes through the locating part to be fixed on the heat dissipation backplate, set up heat conduction copper tablet on the IGBT module with the heat dissipation backplate is connected, its characterized in that, deashing radiator unit includes deashing board, drive assembly and fan blade, the deashing board is fixed to be set up the drive assembly tip, be provided with rack and gear engagement transmission on the deashing board, the gear drives the fan blade rotates and bloies the heat dissipation to the heat dissipation backplate.

2. The three-phase high-voltage power supply for the bag-type dust removal precharge of claim 1, wherein the heat dissipation back plate is provided with a plurality of heat dissipation ribs, and the ash removal plate is provided with a plurality of ash removal protrusions which longitudinally slide between the heat dissipation ribs.

3. The three-phase high-voltage power supply for the bag-type dust removal pre-charging as claimed in claim 2, wherein an ash falling cavity is arranged in the middle of the ash removal convex part, the ash falling cavity is a through hole, and a guide chute is arranged at one side of the ash falling cavity, which is close to the heat dissipation back plate.

4. The three-phase high-voltage power supply for bag-type dust removal pre-charging as claimed in claim 3, wherein a flow guide plate is arranged at the bottom of the ash cleaning plate.

5. The three-phase high-voltage power supply for bag-type dust removal pre-charging as claimed in claim 1, wherein the heat dissipation back plate is arranged between an upper cover plate and a lower top plate, the upper cover plate is connected with the lower top plate through a guide post, and the ash removal plate is slidably arranged on the guide post.

6. The three-phase high-voltage power supply for the bag-type dust removal pre-charging of claim 5, wherein an air guide cover is arranged on the upper cover plate, one end of the air guide cover is connected with the heat dissipation back plate, and the other end of the air guide cover is used for wind blade rotation air inlet.

7. The three-phase high-voltage power supply for bag-type dust removal precharge of claim 6, wherein the upper cover plate is provided with a support seat, the support seat is rotatably provided with a rotating shaft, and the gear and the fan blade are fixedly arranged on the rotating shaft.

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