Complete machine heat dissipation device for high-frequency power supply of electric dust remover

Abstract

The utility model discloses an electric dust remover high-frequency power supply whole machine heat dissipation device which comprises a shell, an inverter heat dissipation unit and a rectifier transformer heat dissipation unit are arranged in the shell, the inverter heat dissipation unit comprises a heat dissipation plate, an external heat pipe radiator and an auxiliary heat dissipation assembly, an inverter device is installed on the front face of the heat dissipation plate, and the rectifier transformer heat dissipation unit is installed on the back face of the heat dissipation plate. The rectifier transformer heat dissipation unit comprises a transformer oil tank, a box body wrapping the outer side of the transformer oil tank and a heat dissipation fan, a plurality of left partition plates and right partition plates are fixed in the box body in a downward inclined mode, and the left partition plates and the right partition plates are arranged in the box body. And blowpipes are fixedly arranged at the bottoms of the left partition plate and the right partition plate. According to the utility model, the heat dissipation devices of the two main heating units of the high-frequency power supply are independently arranged, so that targeted control can be conveniently carried out according to the respective heating conditions of the two heating units, the operation stability and reliability of the system are improved, and the heat dissipation effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrostatic precipitators, and particularly relates to a whole-machine heat dissipation device for a high-frequency power supply of an electrostatic precipitator. Background Art

[0002] An electrostatic precipitator is a flue gas purification system device used in coal-fired power plants to remove particulate soot so that the discharged flue gas meets the national emission standards. The core working principle of the electrostatic precipitator is to utilize the electrostatic force, i.e., Coulomb force, generated by a high-voltage electric field to separate dust particles from the dust-containing gas flow. The high-frequency power supply of the electrostatic precipitator is an important device for generating a high-voltage electric field.

[0003] The input power supply required by the electrostatic precipitator is a high-voltage DC power supply. Therefore, the high-frequency power supply of the electrostatic precipitator generally inputs a three-phase AC 380V power supply, which is rectified and inverted, boosted by a step-up transformer and rectified to output a DC high voltage of 72kV or 80kV. As a power supply device, heat generated due to energy loss during the power conversion process of the high-frequency power supply is inevitable. Without an effective heat dissipation method, the overheating of internal power devices will directly affect their service life and reliability. With the introduction of the national ultra-low emission requirements, the power output of the electrostatic precipitator is developing towards a larger direction, and therefore, the requirements for heat dissipation are also getting higher and higher. For example, for a high-power power supply with an output of more than 120KW, its heat loss is generally more than 10KW. With the increasing miniaturization of current high-frequency power supply products, the equipment volume is generally limited to a narrow cabinet space of about 1 cubic meter, and its volume heat power density is very high, which poses higher requirements for the heat dissipation performance of the whole machine of the high-frequency power supply of the electrostatic precipitator.

[0004] Existing high-frequency power supply cabinets usually adopt natural heat dissipation or forced air cooling. Natural heat dissipation equipment has a large volume and is relatively bulky. At the same time, with the increase in power level, the problem of insufficient heat dissipation capacity becomes prominent. Forced air cooling, that is, a circulating air duct is established inside the equipment, and heat-generating bodies such as power device radiators and transformer corrugated sheets are arranged in the air duct, and external cooling air flow is used to enter the air duct to take out the heat from the equipment. This heat dissipation method has strong practicability and is convenient for maintenance, so it is relatively popular. However, for a power supply with a larger heat and a smaller volume, its heat exchange efficiency cannot meet the requirements. In view of this, it is necessary to study a whole-machine heat dissipation device for a high-frequency power supply of an electrostatic precipitator. Summary of the Invention

[0005] In order to solve the deficiencies of the existing technology, the purpose of the utility model is to provide a whole-machine heat dissipation device for a high-frequency power supply of an electrostatic precipitator, in which the heat dissipation devices of the two main heat-generating units of the high-frequency power supply are independently set, which is convenient to control targeted according to the respective heat generation situations of the two heat-generating units, improves the operation stability and reliability of the system, and has good heat dissipation effect.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A high-frequency power supply whole-machine heat dissipation device for an electrostatic precipitator, comprising a housing. An inverter heat dissipation unit and a rectifier transformer heat dissipation unit are arranged inside the housing. The inverter heat dissipation unit includes a heat dissipation plate, an external heat pipe radiator and an auxiliary heat dissipation component. Inverter devices are installed on the front of the heat dissipation plate, and a heat exchange pipe is fixedly installed on the back. The heat exchange pipe is connected to the external heat pipe radiator through a pipeline. The rectifier transformer heat dissipation unit includes a transformer oil tank, a box body wrapped outside the transformer oil tank and a heat dissipation fan. A plurality of left partitions and right partitions are fixedly arranged inside the box body in a downward-sloping manner. Air blowing pipes are fixedly arranged at the bottoms of the left partitions and the right partitions, and a plurality of air blowing holes are evenly arranged at the bottoms of the air blowing pipes.

[0008] Preferably, the aforementioned left partitions and right partitions are arranged alternately, and air inlets are formed between the left partition and the right inner wall of the box body and between the right partition and the left wall of the box body.

[0009] Preferably, a first air inlet and a second air inlet are arranged at the top of the aforementioned box body. The first air inlet is located above the higher end of the left partition, and the second air inlet is connected to the air blowing pipe through a pipeline.

[0010] Preferably, the aforementioned first air inlet and second air inlet are connected to the heat dissipation fan through a pipeline, and the heat dissipation fan is installed at the top of the housing.

[0011] Preferably, a fan wind cap is installed at the top of the aforementioned heat dissipation fan.

[0012] Preferably, the aforementioned auxiliary heat dissipation component includes a first arc track installed at the rear of the heat dissipation plate, a second arc track located below the first arc track, and a blowing component slidably connected to the first arc track and the second arc track.

[0013] Preferably, the aforementioned blowing component includes a nozzle, a moving block, and a connecting pipe connecting the nozzle and the moving block. The rear sides of the two moving blocks are respectively slidably connected to the first arc track and the second arc track through sliders to drive the movement of the two nozzles.

[0014] Preferably, the interior of the aforementioned moving block is a cavity, the cavity is connected to the nozzle through a connecting pipe, one end of the cavity is connected to a vertical pipe fixed on the side wall of the box body through an air supply pipe, and the vertical pipe is connected to the heat dissipation fan through a pipeline.

[0015] Preferably, the aforementioned air supply pipe is a telescopic flexible pipe.

[0016] Preferably, heat dissipation corrugated sheets are installed at the lower part of the aforementioned housing.

[0017] The beneficial effects of the utility model are as follows:

[0018] (1) The heat dissipation devices of the two main heating units of the high-frequency power supply in the present utility model are independently arranged, which is convenient for targeted control according to the respective heating conditions of the two heating units, and improves the operation stability and reliability of the system.

[0019] (2) In the present utility model, the inverter unit adopts the heat pipe liquid cooling method, and the heat generated by the heating unit is led out through the heat exchange pipe to the external heat pipe radiator outside the equipment for treatment. Thus, while the heat is quickly taken away, the influence on the internal environment temperature of the equipment is reduced, and the influence on the transformer heat dissipation unit is also reduced, and the coupling of the two heat dissipation systems is reduced; the two moving nozzles of the auxiliary heat dissipation component can blow air towards the heat dissipation plate, further improving the heat dissipation effect and the temperature uniformity of the heat dissipation plate.

[0020] (3) In the present utility model, the transformer oil tank is arranged in the box body, and cold air is introduced into it. Coupled with the inclined partition plate, the cold air and the oil tank can better contact, increasing the contact time, fully exchanging heat, and improving the heat exchange efficiency; a blowing air pipe is installed at the bottom of the partition plate to blow in new cold air, which can improve the heat dissipation effect of the box body. Description of the Drawings

[0021] Figure 1 is the structural schematic diagram of the present utility model;

[0022] Figure 2 is the structural schematic diagram of the inverter heat dissipation unit and the rectifier transformer heat dissipation unit in the present utility model;

[0023] Figure 3 is the cross-sectional view of the box body in the present utility model.

[0024] The meanings of the reference numerals in the drawings: 1. housing, 2. heat dissipation plate, 3. external heat pipe radiator, 4. inverter device, 5. heat exchange pipe, 6. transformer oil tank, 7. box body, 701. left partition plate, 702. right partition plate, 703. blowing air pipe, 704. first air inlet, 705. second air inlet, 8. heat dissipation fan, 9. fan wind cap, 10. first arc track, 11. second arc track, 12. nozzle, 13. moving block, 14. connecting pipe, 15. air supply pipe, 16. vertical pipe, 17. heat dissipation corrugated sheet. Detailed Embodiments

[0025] The present utility model will be specifically introduced below in conjunction with the drawings and specific embodiments.

[0026] See Figures 1 to 3, a whole-machine heat dissipation device for the high-frequency power supply of an electrostatic precipitator of the present utility model, includes a housing 1. An inverter heat dissipation unit and a rectifier transformer heat dissipation unit are arranged inside the housing 1. The inverter unit is one of the main heat-generating components of the high-frequency power supply and is composed of multiple heat-generating components, including IGBT module devices and rectifier bridge module devices

[0027] The inverter heat dissipation unit includes a heat dissipation plate 2, an external heat pipe radiator 3, and an auxiliary heat dissipation component. The front of the heat dissipation plate 2 is installed with inverter devices 4, and the reverse side is fixedly installed with a heat exchange pipe 5. The heat exchange pipe 5 is connected to the external heat pipe radiator 3 through a pipeline. The external heat pipe radiator 3 is independently arranged near the high-frequency power supply of the electrostatic precipitator and is connected to the aluminum profile heat pipe heat dissipation plate 2 through a pipeline. The height of the external heat pipe radiator 3 is more than 10.5 m higher than that of the aluminum profile heat pipe heat dissipation plate 2. A pull-out and detachable filter screen is arranged at the air inlet of the cooling fan 8 of the external heat pipe radiator 3, which is convenient for cleaning the filter screen and improves the maintainability of the system. The filter screen is made of stainless steel to improve the corrosion resistance

[0028] The auxiliary heat dissipation component includes a first arc track 10 installed at the rear side of the heat dissipation plate 2, a second arc track 11 located below the first arc track 10, and a blowing component slidably connected to the first arc track 10 and the second arc track 11. The blowing component includes a nozzle 12, a moving block 13, and a connecting pipe 14 connecting the nozzle 12 and the moving block 13. The rear sides of the two moving blocks 13 are respectively slidably connected to the first arc track 10 and the second arc track 11 through sliders. The sliders are linked to a sliding motor to drive the back-and-forth movement of the two nozzles 12. The inside of the moving block 13 is a cavity, and the cavity is connected to the nozzle 12 through the connecting pipe 14. One end of the cavity is connected to a vertical pipe 16 fixed to the side wall of the box body 7 through an air supply pipe 15. The vertical pipe 16 is connected to the cooling fan 8 through a pipeline. The air supply pipe 15 is a telescopic hose, which can avoid affecting the movement of the two nozzles 12. The cooling fan 8 sends cold air into the vertical pipe 16, and then through the air supply pipe 15 and the moving block 13 to the nozzle 12, and is ejected from the nozzle 12 to conduct air-cooled heat dissipation on the heat dissipation plate 2

[0029] The rectifier transformer is another main heat-generating component of the high-frequency power supply. It is internally composed of multiple heat-generating components such as a transformer wire coil, a transformer iron core, and a rectifier bridge plate, and is integrally arranged in a closed box body 7 space filled with transformer oil. The rectifier transformer heat dissipation unit includes a transformer oil tank 6, a box body 7 wrapped around the outside of the transformer oil tank 6, and a heat dissipation fan 8. A plurality of left partitions 701 and right partitions 702 are fixedly installed inside the box body 7 and inclined downward. At the bottom of both the left partition 701 and the right partition 702, there is a blowing pipe 703 fixedly installed. There is no need to install a blowing pipe at the bottom of the partition at the lowermost end. A plurality of blowing holes are evenly arranged at the bottom of the blowing pipe 703. The left partition 701 and the right partition 702 are alternately arranged, and an air outlet is formed between the left partition 701 and the right inner wall of the box body 7 and between the right partition 702 and the left wall of the box body 7.

[0030] At the top of the box body 7, there are a first air inlet 704 and a second air inlet 705. The first air inlet 704 is located above the higher end of the left partition 701. The second air inlet 705 is connected to the blowing pipe 703 through a pipeline. The first air inlet 704 and the second air inlet 705 are connected to the heat dissipation fan 8 through a pipeline. The heat dissipation fan 8 is installed on the top of the housing 1. A fan wind cap 9 is installed on the top of the heat dissipation fan 8.

[0031] A heat dissipation corrugated sheet 17 is also installed at the lower part of the housing 1, which can play a role in ventilation and heat dissipation. The bottom of the box body 7 is connected to an air outlet pipe leading to the heat dissipation corrugated sheet 17 at the lower part of the housing to discharge the hot air.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A heat dissipation device for a high-frequency power supply of an electrostatic precipitator, comprising a housing (1), wherein an inverter heat dissipation unit and a rectifier transformer heat dissipation unit are arranged inside the housing (1), characterized in that: The inverter heat dissipation unit comprises a heat dissipation plate (2), an external heat pipe heat sink (3) and an auxiliary heat dissipation component; an inverter device (4) is installed on the front of the heat dissipation plate (2); a heat exchange tube (5) is fixedly installed on the back; the heat exchange tube (5) is connected to the external heat pipe heat sink (3) through a pipeline; the rectifier transformer heat dissipation unit comprises a transformer oil tank (6), a box body (7) wrapped around the outside of the transformer oil tank (6) and a heat dissipation fan (8); a plurality of left partitions (701) and right partitions (702) are fixedly arranged in a downwardly inclined manner inside the box body (7); a blowing pipe (703) is fixedly arranged at the bottom of each of the left partitions (701) and the right partitions (702); and a plurality of blowing holes are evenly arranged at the bottom of each of the blowing pipes (703).

2. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: The left partition plate (701) and the right partition plate (702) are alternately arranged, and downwind vents are formed between the left partition plate (701) and the right inner wall of the box body (7), and between the right partition plate (702) and the left wall of the box body (7).

3. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: A first air inlet (704) and a second air inlet (705) are provided on the top of the box body (7); the first air inlet (704) is located above the higher end of the left partition (701); and the second air inlet (705) is connected to the blowing pipe (703) via a pipeline.

4. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 3, characterized in that: The first air inlet (704) and the second air inlet (705) are connected to a heat dissipation fan (8) via a pipeline, and the heat dissipation fan (8) is installed on the top of the housing (1).

5. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: A fan hood (9) is installed on the top of the heat dissipation fan (8).

6. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: The auxiliary heat dissipation component comprises a first arc track (10) mounted on the rear side of the heat dissipation plate (2), a second arc track (11) located below the first arc track (10), and a blowing component slidably connected to the first arc track (10) and the second arc track (11).

7. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 6, characterized in that: The blowing assembly comprises a nozzle (12), a moving block (13), and a connecting pipe (14) connecting the nozzle (12) and the moving block (13); the rear sides of the two moving blocks (13) are slidably connected to the first arc track (10) and the second arc track (11) respectively through sliders to drive the movement of the two nozzles (12).

8. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 7, characterized in that: The interior of the moving block (13) is a cavity, the cavity is connected to the nozzle (12) via a connecting pipe (14), one end of the cavity is connected to a vertical pipe (16) fixed on the side wall of the box body (7) via an air supply pipe (15), and the vertical pipe (16) is connected to the heat dissipation fan (8) via a pipeline.

9. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 8, characterized in that: The air supply pipe (15) is a retractable hose.

10. The heat dissipation device for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: A heat dissipation corrugated sheet (17) is installed at the lower part of the housing (1).

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