Air supply device
The air supply device guides the outside natural wind into the high-frequency power supply, solving the problem of excessive temperature of the coolant of the high-frequency power supply, and achieving improved cooling effect and simplicity of maintenance.
Patent Information
- Application Number
- CN202421944272.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-12
AI Technical Summary
High-frequency power supplies are prone to tripping due to excessive coolant temperature, resulting in unqualified environmental protection indicators and production losses of thermal power units.
Design an air supply device to guide the outside natural wind into the high-frequency power supply through the fan and air guide plate, increase the air inlet volume to cool the coolant and avoid excessive temperature.
Effectively reduce the internal coolant temperature of high-frequency power supply, avoid tripping, simplify the maintenance process, and extend the filter cleaning cycle.
Smart Images
Figure CN223142350U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of dust removal in thermal power plants, and more specifically, to an air supply device. Background Art
[0002] Common dust removal equipment in thermal power plants includes: high-frequency power supplies, rectifier transformers, cloth bags, etc. Currently, high-frequency power supplies are more common due to their energy-saving, high-efficiency, and simple installation. Among them, a high-frequency power supply is a device that provides a DC negative high voltage for the cathode of an electrostatic precipitator. It rectifies the industrial frequency three-phase AC power supply and then converts it into a DC negative high voltage output through high-frequency inversion, boosting, and secondary rectification. If the high-frequency power supply frequently malfunctions, it may cause the high-frequency power supply to trip, which not only makes the environmental protection indicators of the thermal power unit unqualified but also affects the unit load, causing significant losses to the enterprise production.
[0003] Currently, the main reason for the high-frequency power supply to trip is that the coolant temperature is too high. Therefore, how to avoid this problem is the main problem that needs to be solved urgently at present. Utility Model Content
[0004] The purpose of the present disclosure is to provide an air supply device that can ensure the cooling effect of the coolant inside the high-frequency power supply by increasing the air intake of the high-frequency power supply.
[0005] To achieve the above purpose, the present disclosure provides an air supply device for a high-frequency power supply. The high-frequency power supply has a first air inlet, and a filter screen is provided at the first air inlet. The air supply device includes an air duct, a fan, and a wind guide plate. The air duct has a second air inlet and an air outlet. The fan is arranged at the second air inlet and is electrically connected to an external power supply. The air outlet is used to communicate with the first air inlet. The wind guide plate is arranged inside the air duct to guide the air flow towards the first air inlet.
[0006] Optionally, the wind guide plate includes an uphill section and a downhill section connected to each other. The uphill section and the downhill section are respectively arranged close to the fan and the air outlet.
[0007] Optionally, the wind guide plate is configured as an inverted V-shaped plate, and the inverted V-shaped plate is arranged on the inner wall of the air duct.
[0008] Optionally, the first included angle α between the uphill section and the inner wall of the air duct is 30° to 60°.
[0009] Optionally, the air duct further has a debris discharge port, and the debris discharge port is located on one side of the wind guide plate close to the downhill section.
[0010] Optionally, the second included angle β between the downhill section and the inner wall of the air duct is 30° to 60°.
[0011] Optionally, the ratio between the height h of the air deflector and the height H of the air duct is 0.4 to 0.6.
[0012] Optionally, a protective net is further provided at the second air inlet.
[0013] Optionally, the protective net is configured as an iron net.
[0014] Optionally, a flanging is provided on the air duct, and the air duct is installed in the installation groove at the first air inlet through the flanging.
[0015] Through the above technical solution, when the air supply device provided by the present disclosure is in use, the fan provided at the second air inlet can introduce the external natural wind into the air duct, and then under the guiding action of the air deflector, this part of the natural wind is passed into the high-frequency power supply through the air outlet and the first air inlet, so as to increase the air volume introduced into the high-frequency power supply through artificial intervention, ensure the cooling effect of the coolant inside the high-frequency power supply, and avoid tripping of the high-frequency power supply due to too high coolant temperature. In addition, the air supply device is small in size and easy to carry, so it will not affect the disassembly and installation of the filter screen, making the maintenance of the entire high-frequency power supply easier and more convenient.
[0016] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification, and are used to explain the present disclosure together with the following specific implementation manners, but do not constitute a limitation to the present disclosure. In the drawings:
[0018] Figure 1 is a schematic structural diagram of an air supply device provided by an exemplary embodiment of the present disclosure;
[0019] Figure 2 is another schematic structural diagram of an air supply device provided by an exemplary embodiment of the present disclosure.
[0020] DESCRIPTION OF THE REFERENCE NUMERALS
[0021] 1 - air duct; 11 - second air inlet; 12 - air outlet; 13 - debris discharge port; 14 - flanging; 2 - fan; 3 - air deflector; 31 - inverted V-shaped plate; 311 - uphill section; 312 - downhill section; 4 - protective net. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following will describe in detail the specific implementation manners of the present disclosure with reference to the drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.
[0023] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" refer to the upper and lower directions in the direction of gravity during actual use. Among them, the "upper" and "lower" orientations correspond to Figure 1 and Figure 2 the upper and lower orientations in the drawing of. In addition, "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element and do not have an order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as a limitation to the present disclosure.
[0024] The present disclosure provides an air supply device. Referring to Figure 1 as shown in, the air supply device is used for a high-frequency power supply (not shown in the figure). The high-frequency power supply has a first air inlet (not shown in the figure), and a filter screen (not shown in the figure) is provided at the first air inlet. The air supply device includes an air duct 1, a fan 2, and a wind guide plate 3. The air duct 1 has a second air inlet 11 and an air outlet 12. The fan 2 is disposed at the second air inlet 11 and is electrically connected to an external power supply. The air outlet 12 is used to communicate with the first air inlet. The wind guide plate 3 is disposed inside the air duct 1 to guide the air flow toward the first air inlet.
[0025] Through the above technical solution, when the air supply device provided by the present disclosure is in use, the fan 2 provided at the second air inlet 11 can introduce the external natural wind into the air duct 1, and then under the guiding action of the wind guide plate 3, this part of the natural wind is introduced into the high-frequency power supply through the air outlet 12 and the first air inlet, thereby increasing the air volume introduced into the high-frequency power supply through manual intervention, ensuring the cooling effect of the coolant inside the high-frequency power supply, and avoiding the high-frequency power supply from tripping due to too high coolant temperature. In addition, the air supply device is small and easy to carry, so it will not affect the disassembly and installation of the filter screen, making the maintenance of the entire high-frequency power supply easier and more convenient.
[0026] Among them, to ensure that the air guiding effect of the fan 2 meets the requirements, a fan 2 with an air volume of 160 m 3 / h can be selected.
[0027] In the exemplary embodiment provided by the present disclosure, referring to Figure 1 and Figure 2 as shown in, the wind guide plate 3 can be set to include an uphill section 311 and a downhill section 312 that are connected to each other. The uphill section 311 and the downhill section 312 are respectively disposed close to the fan 2 and the air outlet 12. Through such a setting, when the air flow entering the air duct 1 passes through the wind guide plate 3, it will first pass through the uphill section 311, and then under the guidance of the uphill section 311, the air flow will be guided toward the first air inlet.
[0028] In the exemplary embodiments provided by the present disclosure, the air deflector 3 can be constructed in any suitable structure, and the present disclosure places no limitation thereon. Exemplarily, as shown in Figure 1 and Figure 2 , the air deflector 3 can be constructed as an inverted V-shaped plate 31. The inverted V-shaped plate 31 can be arranged on the inner wall of the air duct 1. With such an arrangement, when the natural wind from the outside enters the air duct 1 under the action of the fan 2, the arrangement of the inverted V-shaped plate 31 can make the air flow along the path formed by the inverted V-shaped plate 31, so as to guide the air flow towards the first air inlet.
[0029] In the exemplary embodiments provided by the present disclosure, as shown in Figure 2 , in order to ensure that the air flow has a relatively high wind speed when passing through the uphill section 311 of the air deflector 3, so that under the action of the air deflector 3, the air flow in the air duct 1 can be guided towards the first air inlet as much as possible, the first included angle α between the uphill section 311 and the inner wall of the air duct 1 can be set to 30° - 60°. Exemplarily, the first included angle α can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, or any other suitable angle within the range of 30° - 60°. The present disclosure places no limitation thereon, and it can be specifically selected flexibly according to the actual situation.
[0030] In the exemplary embodiments provided by the present disclosure, as shown in Figure 1 , the air duct 1 can further have a debris discharge port 13. The debris discharge port 13 is located on one side of the air deflector 3 close to the downhill section 312. In this way, according to the principle of aerodynamics, the wind speed of the uphill section 311 of the air deflector 3 is fast and the pressure is high, while the wind speed of the downhill section 312 is slow and the pressure is low. In this way, a small part of the air flow will form a vortex at the downhill section 312, driving the objects in the air to turn downwards. In this way, the fluff, dust and other debris that enter the inside of the air duct 1 during the air guiding process can be discharged through the debris discharge port 13, so that the frequency of workers cleaning the filter screen of the high-frequency power supply can be reduced and the cleaning cycle can be extended.
[0031] In the exemplary embodiments provided by the present disclosure, as shown in Figure 2 , in order to ensure that a small part of the air flow forms a vortex at the downhill section 312 of the air deflector 3, so as to drive the objects in the air to turn downwards to remove the fluff, dust and other debris in the air, the second included angle β between the downhill section 312 and the inner wall of the air duct 1 can be set to 30° - 60°. Exemplarily, the second included angle β can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, or any other suitable angle within the range of 30° - 60°. The present disclosure places no limitation thereon, and it can be specifically selected flexibly according to the actual situation.
[0032] In the exemplary embodiments provided by the present disclosure, refer to Figure 2 As shown in Figure 2 , in order to enable the air deflector 3 to simultaneously introduce most of the air flow into the high-frequency power supply and allow a small portion of the air to be used to remove debris in the air, the ratio of the height h of the air deflector 3 to the height H of the air duct 1 can be set to 0.4 to 0.6. Exemplarily, the ratio of the height h of the air deflector 3 to the height H of the air duct 1 can be 0.4, 0.45, 0.5, 0.55, or 0.6, or any other suitable ratio within the range of 0.4 to 0.6. The present disclosure does not limit this, and it can be specifically flexibly selected according to the actual situation.
[0033] In the exemplary embodiments provided by the present disclosure, refer to Figure 1 As shown in Figure 1 , a protective net 4 can also be provided at the second air inlet 11. By such a setting, personal safety can be ensured, and the risk of accidental contact by personnel during the operation of the fan 2 can be avoided.
[0034] In the exemplary embodiments provided by the present disclosure, the protective net 4 and the air duct 1 can be constructed in any suitable manner, and the present disclosure does not limit this. Optionally, since iron is a common metal material, and its thermal conductivity and price are much lower than those of copper and aluminum, it is not easy to absorb heat from the outside, and its rigidity is also better than that of copper and aluminum. Therefore, the protective net 4 can be constructed as an iron net, and the air duct 1 can be constructed as an iron air duct.
[0035] In the exemplary embodiments provided by the present disclosure, refer to Figure 1 As shown in Figure 1 , a flanging 14 can also be provided on the air duct 1. The air duct 1 is used to be installed in an installation groove (not shown in the figure) at the first air inlet through the flanging 14. By such a setting, the air duct 1 can be installed on the high-frequency power supply without changing the structure of the high-frequency power supply itself, so the adaptability is better. Among them, the size of the flanging 14 can be set in combination with the size of the installation groove on the high-frequency power supply in the actual situation.
[0036] The working principle of the air supply device of the present disclosure is as follows: When the fan 2 is turned on, the outside natural wind is introduced into the air duct 1 by the fan 2. After that, most of the air flow will directly enter the high-frequency power supply through the air supply port 12 and the first air inlet after passing through the uphill section 311 of the air deflector 3, and then cool the coolant inside the high-frequency power supply to prevent the coolant temperature from being too high and causing the high-frequency power supply to trip. And a small portion of the air flow will continue to pass through the downhill section 312 of the air deflector 3 after passing through the uphill section 311 of the air deflector 3, and form a vortex in the downhill section 312 of the air deflector 3, thereby driving the fluff, dust and other debris in the air to be turned up and discharged from the debris discharge port 13 to remove the debris inside the air duct 1.
[0037] In addition, it should be noted that in order to verify the functions of the air supply device of the present disclosure, the temperatures of different high-frequency power supplies were measured during the same time period (for example, around 15:00, the time with the highest temperature in a day in August in the local summer). Through statistics, the temperatures at the first air inlets have all been reduced to below 40°C. The inlet air temperature has been effectively reduced. At the same time, the filter screen is cleaned once a month instead of once a week as before, which extends the equipment maintenance cycle and saves manpower.
[0038] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0039] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0040] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.
Claims
1. An air supply device for a high-frequency power supply, the high-frequency power supply having a first air inlet provided with a filter, characterized in that, The air supply device includes an air duct, a fan, and a wind deflector. The air duct has a second air inlet and an air outlet. The fan is disposed at the second air inlet and electrically connected to an external power source. The air outlet is used to communicate with the first air inlet. The wind deflector is disposed inside the air duct to guide the air flow towards the first air inlet.
2. The air supply device according to claim 1, wherein The wind deflector includes an uphill section and a downhill section connected to each other. The uphill section and the downhill section are respectively disposed close to the fan and the air outlet.
3. The air supply device according to claim 2, characterized in that, The wind deflector is configured as an inverted V-shaped plate, and the inverted V-shaped plate is disposed on the inner wall of the air duct.
4. The air supply device according to claim 3, characterized in that, The first included angle α between the uphill section and the inner wall of the air duct is 30° to 60°.
5. The air supply device according to claim 4, characterized in that The air duct further has a debris discharge outlet, and the debris discharge outlet is located on one side of the wind deflector close to the downhill section.
6. The air supply device according to claim 5, characterized in that, The second included angle β between the downhill section and the inner wall of the air duct is 30° to 60°.
7. The air supply device according to claim 1, characterized in that The ratio of the height h of the wind deflector to the height H of the air duct is 0.4 to 0.
6.
8. The air supply device according to claim 7, wherein, A protective net is further disposed at the second air inlet.
9. The air supply device according to claim 8, characterized in that, The protective net is configured as an iron net.
10. The air supply device according to claim 1, characterized in that, The air duct is provided with a flanging, and the air duct is installed in the installation groove at the first air inlet through the flanging.