Thermal power plant ventilation and heat dissipation device provided with flexible filter screen sleeve capable of being continuously cleaned

Abstract

The invention discloses a thermal power plant ventilation and heat dissipation device provided with a flexible filter screen sleeve capable of being continuously cleaned in the technical field of thermal power plants, and the thermal power plant ventilation and heat dissipation device comprises a thermal power plant room, an air inlet and an air outlet are oppositely formed in the two sides of the thermal power plant room in a penetrating mode, and ventilation and heat dissipation blades are installed on the air inlet and the air outlet; the installation positions of the air inlet and the air outlet correspond to the interior of the thermal power plant room; through cooperation of rotation of the cleaning assembly and the flexible filter screen sleeve, continuous cleaning can be completed without shutdown, the defect that traditional filter screen cleaning needs shutdown disassembly is thoroughly overcome, and continuous operation of a ventilation and heat dissipation system of a thermal power plant is guaranteed; the service life of the flexible filter screen sleeve is effectively prolonged through continuous cleaning, the filter screen replacement frequency is reduced, the operation and maintenance workload and cost are reduced, and the working condition requirements of high-load continuous operation of a thermal power plant are completely met.

Description

Technical Field

[0001] This invention relates to the field of thermal power plant technology, specifically to a thermal power plant ventilation and heat dissipation device equipped with a continuously cleanable flexible filter sleeve. Background Technology

[0002] During the production and operation of thermal power plants, various core equipment such as steam turbines, generators, and boiler auxiliary systems generate a large amount of heat when operating at high speeds. If this heat cannot be dissipated in time through ventilation and heat dissipation devices, it will lead to an abnormal increase in the internal temperature of the equipment, directly affecting the operating efficiency of the equipment, and even causing serious problems such as component aging, failure and shutdown.

[0003] To prevent dust, particulate matter, lint, and other impurities from the outside air from entering the indoor environment of thermal power plants and contaminating equipment or clogging heat dissipation channels during operation, ventilation and heat dissipation devices typically have a filter structure at the air inlet. Currently, the cleaning methods for flexible filter sleeves in thermal power plant ventilation and heat dissipation devices mostly involve manual periodic disassembly and cleaning or traditional mechanical intermittent cleaning structures. Manual cleaning not only requires frequent shutdowns, severely impacting the continuous production process of thermal power plants, but also involves high labor intensity and low efficiency. Traditional mechanical intermittent cleaning structures generally suffer from incomplete cleaning; impurities detached during cleaning tend to disperse and accumulate inside the filter, and some impurities may even re-adhere to the filter surface, making it difficult to effectively restore the filter's filtration performance.

[0004] Based on this, the present invention designs a ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ventilation and heat dissipation device for a thermal power plant with a continuously cleanable flexible filter sleeve, comprising a thermal power plant chamber, wherein an air inlet and an air outlet are provided through the two sides of the thermal power plant chamber, and ventilation and heat dissipation blades are installed on the air inlet and the air outlet. Inside the thermal power plant chamber, corresponding to the installation positions of the air inlet and the air outlet, a flexible filter sleeve with the function of intercepting impurities is configured. The flexible filter sleeve, through its structural adaptation design with the air inlet and the air outlet, can effectively intercept the airflow flowing through the air inlet and the exhaust airflow flowing through the air outlet, thereby filtering and blocking pollutants such as particulate matter and impurities mixed in the airflow, and ensuring the cleanliness of the operating environment of the equipment inside the thermal power plant chamber; The flexible filter sleeve is provided with a cleaning component capable of continuously cleaning it; the flexible filter sleeve is provided with a driving component capable of driving it to rotate.

[0007] As a further embodiment of the present invention, the drive assembly includes four electric rotating shafts arranged inside the interior of the thermal power plant. The four electric rotating shafts support the flexible filter sleeve to form a closed sleeve-shaped structure. By positioning and adjusting the tension of the rotating shafts, the outer surface of the flexible filter sleeve is tightly fitted to the inner wall of the air inlet and air outlet, ensuring the airtight fit of the airflow channel and the full coverage of filtration and interception.

[0008] As a further embodiment of the present invention, the cleaning component includes two sets of cleaning plates for cleaning the flexible filter sleeve. The cleaning plates adopt a U-shaped structure design, and the opening size is adapted to the thickness of the flexible filter sleeve. The cleaning plates form a close contact with the inner and outer surfaces of the flexible filter sleeve through the two side walls of the U-shaped structure, respectively. During the relative movement, the cleaning treatment of impurities attached to both sides of the flexible filter sleeve can be realized simultaneously, so as to ensure the stable performance of the filter screen. Each of the two sets of cleaning plates has a sliding plate fixedly connected to one side of its opposite side. Both sliding plates are connected to a limiting plate, which is fixedly connected inside the power plant chamber. Each of the two sliding plates has a toothed plate that can drive their relative movement. Both toothed plates are elastically connected to the limiting plate by springs. Both toothed plates mesh with an incomplete gear that can drive their relative movement. A power component is fixedly connected to the shaft of the incomplete gear.

[0009] As a further embodiment of the present invention, the power component includes a drive motor fixedly connected to the outside of the thermal power plant, the output shaft of the drive motor passing through and extending into the interior of the thermal power plant and fixedly connected to the shaft of the incomplete gear.

[0010] As a further embodiment of the present invention, the cleaning assembly further includes an adsorption cylinder fixedly connected to the limiting plate. Each adsorption cylinder has an adsorption hole that can adsorb impurities brushed off inside the flexible filter sleeve. An output pipe is fixedly connected to the adsorption cylinder, and a waste discharge box is fixedly connected to the upper end of the output pipe. The waste discharge box is fixedly connected to the upper end of the thermal power plant chamber.

[0011] As a further embodiment of the present invention, a flexible brush plate is provided on the opposite side of the cleaning plate, which is capable of further cleaning the flexible filter sleeve.

[0012] As a further embodiment of the present invention, the limiting plate is provided with a guide groove adapted to the sliding plate, and the sliding plate is slidably embedded in the guide groove.

[0013] As a further embodiment of the present invention, a one-way valve is connected in series on the output pipe, and a detachable dust collection drawer is provided at the bottom of the waste discharge box.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the thermal power plant chamber of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cleaning plate structure of the present invention on the flexible filter sleeve; Figure 5 This is a schematic diagram of the toothed plate position structure of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 for Figure 5 Enlarged structural diagram of the structure at point C; Figure 8 This is a schematic diagram of the front structure of the limiting plate of the present invention; The attached diagram lists the components represented by each number as follows: 1. Air inlet 2. Air outlet 3. Ventilation and heat dissipation blades 4. Flexible filter screen 5. Electric rotating shaft 6. Cleaning plate 7. Sliding plate 8. Limiting plate 9. Toothed plate 10. Incomplete gear 11. Drive motor 12. Adsorption cylinder 13. Adsorption hole 14. Output pipe 15. Waste discharge box 16. Flexible brush plate 17. Detailed Implementation

[0015] Please see Figures 1-8 This invention provides a technical solution: a ventilation and heat dissipation device for a thermal power plant with a continuously cleanable flexible filter sleeve, comprising a thermal power plant chamber 1, wherein an air inlet 2 and an air outlet 3 are provided through the two sides of the thermal power plant chamber 1, and ventilation and heat dissipation blades 4 are installed on the air inlet 2 and the air outlet 3. A flexible filter sleeve 5 with the function of intercepting impurities is configured inside the thermal power plant chamber 1 corresponding to the installation positions of the air inlet 2 and the air outlet 3. The flexible filter sleeve 5, through its structural adaptation design with the air inlet 2 and the air outlet 3, can effectively intercept the airflow flowing through the air inlet 2 and the exhaust airflow flowing through the air outlet 3, thereby filtering and blocking pollutants such as particulate matter and impurities mixed in the airflow, and ensuring the cleanliness of the operating environment of the equipment inside the thermal power plant chamber 1. The flexible filter sleeve 5 is provided with a cleaning component capable of continuously cleaning it; the flexible filter sleeve 5 is provided with a driving component capable of driving it to rotate.

[0016] During operation, the ventilation and heat dissipation blades 4 at the air inlet 2 and air outlet 3 are activated simultaneously, forming an airflow channel that runs through the thermal power plant chamber 1 to ventilate and dissipate heat. When outside air enters through the air inlet 2, the flexible filter sleeve 5, through its structural adaptation design with the air inlet 2 and air outlet 3, comprehensively intercepts pollutants such as particulate matter and impurities in the airflow. The filtered clean airflow provides a good operating environment for the equipment inside the thermal power plant chamber 1 and is finally discharged through the air outlet 3. At the same time, the drive component drives the flexible filter sleeve 5 to rotate continuously, so that the filtration areas on the filter surface are evenly alternating to avoid local over-clogging. During this process, the cleaning component works simultaneously to continuously clean the flexible filter sleeve 5 during rotation, ensuring that the filter always maintains a high-efficiency filtration state, and achieving coordinated operation of ventilation and heat dissipation and filter cleaning.

[0017] The design of the flexible filter sleeve 5, which is adapted to the air inlet 2 and the air outlet 3, enables all-round filtration and blocking of the incoming and outgoing airflow, effectively removing particulate matter, impurities and other pollutants, significantly improving the cleanliness of the operating environment of the equipment inside the thermal power plant chamber 1, reducing the erosion and wear of the equipment by pollutants, extending the service life of the equipment and reducing the failure rate. On the other hand, the cooperation between the drive component and the cleaning component enables the flexible filter sleeve 5 to have a continuous self-cleaning function, which can complete the filter cleaning without stopping the machine to disassemble it. This avoids the production interruption problem caused by traditional filter cleaning, ensures the continuous and stable operation of the ventilation and heat dissipation system, reduces the cost of manual cleaning, improves the operating efficiency and practicality of the device, and meets the high-load and continuous operation requirements of thermal power plants.

[0018] As a further embodiment of the present invention, the drive assembly includes four electric rotating shafts 6 arranged inside the thermal power plant chamber 1. The four electric rotating shafts 6 support the flexible filter sleeve 5 to form a closed sleeve-shaped structure. By positioning and adjusting the tension of the rotating shafts 6, the outer surface of the flexible filter sleeve 5 is tightly fitted to the inner wall of the air inlet 2 and the air outlet 3, ensuring the airtight fit of the airflow channel and the full coverage of filtration and interception.

[0019] During operation, four electric rotating shafts 6 installed inside the thermal power plant chamber 1 start synchronously and maintain uniform rotation, so that the outer surface of the flexible filter sleeve 5 forms a tight fit with the inner wall of the air inlet 2 and the air outlet 3, eliminating gaps in the airflow channel. During the ventilation and heat dissipation process of the device, the electric rotating shafts 6 continuously drive the flexible filter sleeve 5 to rotate smoothly in the circumferential direction, so that the filter surface of the filter screen participates in the airflow interception work evenly, avoiding the accumulation of impurities in local areas due to long-term filtration, and realizing the dynamic alternation of the filter screen filtration area.

[0020] The flexible filter sleeve 5 forms a closed sleeve-shaped structure and fits tightly against the walls of the air inlet and outlet, effectively ensuring the airtightness of the airflow channel and preventing unfiltered airflow from leaking through the gaps. At the same time, it achieves full coverage of filtering and interception of the inlet and outlet airflow, improving the comprehensiveness and reliability of the filtration effect.

[0021] As a further embodiment of the present invention, the cleaning component includes two sets of cleaning plates 7 for cleaning the flexible filter sleeve 5. The cleaning plates 7 adopt a U-shaped structure design, and the opening size is adapted to the thickness of the flexible filter sleeve 5. The cleaning plates 7 form a close contact with the inner surface and outer surface of the flexible filter sleeve 5 through the two side walls of the U-shaped structure, respectively. During the relative movement, the cleaning treatment of impurities attached to both sides of the flexible filter sleeve 5 can be realized simultaneously, so as to ensure the stable performance of the filter screen. Each of the two sets of cleaning plates 7 has a sliding plate 8 fixedly connected to one side of its opposite side. Both sliding plates 8 are connected to a limiting plate 9, which is fixedly connected inside the power plant chamber 1. Both sliding plates 8 have a toothed plate 10 that can drive their relative movement fixedly connected to them. Both toothed plates 10 are elastically connected to the limiting plate 9 by springs. Both toothed plates 10 mesh with an incomplete gear 11 that can drive their relative movement. A power component is fixedly connected to the shaft of the incomplete gear 11.

[0022] When the cleaning assembly is in operation, the driving force is first provided by the power component at the shaft of the incomplete gear 11, causing the incomplete gear 11 to rotate at a constant speed. Since the two toothed plates 10 are symmetrically arranged and mesh with the incomplete gear 11, and both are elastically connected to the limiting plate 9 fixed inside the thermal power plant chamber 1 by springs, when the incomplete gear 11 rotates to the section where the tooth surface meshes with the two toothed plates 10 simultaneously, it will drive the two toothed plates 10 to overcome the elastic tension of the springs and move synchronously in a relatively closer direction. The two toothed plates 10 respectively drive the sliding plate 8 fixedly connected to it to slide smoothly along the guide structure of the limiting plate 9, thereby driving the upper and lower cleaning plates 7 to move closer to the flexible filter sleeve 5. When the incomplete gear 11 rotates to the toothless section, it disengages from the two toothed plates 10, and the two toothed plates 10 move in a relatively farther direction under the elastic reset action of their respective connecting springs, causing the sliding plate 8 and the cleaning plate 7 to move synchronously away from the flexible filter sleeve 5. During this cycle, when the cleaning plate 7 approaches the flexible filter sleeve 5, due to the U-shaped structure adapted to the thickness of the filter, its two side walls will form a tight fit with the inner and outer surfaces of the flexible filter sleeve 5, respectively. Combined with the rotation of the flexible filter sleeve 5 itself, the impurities attached to both sides of the filter are scraped synchronously through the relative movement between the two, so as to achieve continuous and stable cleaning operation.

[0023] The cleaning components work in tandem with the rotation of the flexible filter sleeve 5, enabling continuous cleaning without stopping the machine. This completely solves the drawback of traditional filter cleaning requiring machine shutdown and disassembly, ensuring the continuous operation of the ventilation and heat dissipation system of thermal power plants. Continuous cleaning effectively extends the service life of the flexible filter sleeve 5, reduces the frequency of filter replacement, and lowers the workload and cost of operation and maintenance, fully meeting the requirements of high-load continuous operation in thermal power plants.

[0024] As a further embodiment of the present invention, the power component includes a drive motor 12 fixedly connected to the outside of the thermal power plant chamber 1, the output shaft of the drive motor 12 passing through and extending into the thermal power plant chamber 1 and fixedly connected to the shaft of the incomplete gear 11.

[0025] The drive motor 12, which is fixedly connected to the outside of the thermal power plant chamber 1, is started. After the drive motor 12 is powered on, it generates rotational power, and its output shaft begins to rotate at a preset speed and direction. Since the output shaft of the drive motor 12 passes through the side wall of the thermal power plant chamber 1 and extends into the interior, and is fixedly connected to the shaft of the incomplete gear 11, the rotational power of the output shaft is directly transmitted to the incomplete gear 11 through a rigid connection, causing the incomplete gear 11 to rotate synchronously.

[0026] As a further embodiment of the present invention, the cleaning assembly further includes an adsorption cylinder 13 fixedly connected to the limiting plate 9. Each adsorption cylinder 13 is provided with an adsorption hole 14 capable of adsorbing impurities brushed off inside the flexible filter sleeve 5. An output pipe 15 is fixedly connected to the adsorption cylinder 13. A waste discharge box 16 is fixedly connected to the upper end of the output pipe 15. The waste discharge box 16 is fixedly connected to the upper end of the thermal power plant chamber 1.

[0027] When the cleaning components clean the flexible filter sleeve 5, as the cleaning action progresses, dust, particulate matter, and other impurities adhering to the surface of the flexible filter sleeve 5 are brushed off and fall into the inner space of the filter. At this time, the adsorption cylinder 13, which is fixedly connected to the limiting plate 9, is simultaneously in working condition. The adsorption holes 14 on its surface generate adsorption force, accurately capturing various impurities that have fallen from the flexible filter sleeve 5, preventing impurities from accumulating inside the filter or re-adhering to the filter surface. The adsorption cylinder 13 forms an impurity transport channel through the fixedly connected output pipe 15. The impurities captured by the adsorption holes 14 are transported upward along the output pipe 15 under the adsorption force and airflow, and finally enter the waste discharge box 16, which is fixedly connected to the upper end of the thermal power plant chamber 1, through the connection port at the upper end of the output pipe 15. The waste discharge box 16 centrally collects and stores the impurities transported to the interior, completing the closed-loop transport and treatment of impurities from the cleaning area to the collection area, ensuring that the cleaning operation is continuously and efficiently carried out.

[0028] The adsorption cylinder 13 precisely adsorbs impurities that fall into the flexible filter sleeve 5 through the adsorption holes 14, effectively solving the problem of impurities scattering and accumulating during the cleaning process. This significantly improves the thoroughness of filter cleaning, prevents impurities from affecting the filter efficiency, and ensures the air intake quality or media purification effect of related equipment in the power plant chamber 1. On the other hand, the coordinated design of the output pipe 15 and the impurity discharge box 16 constructs an efficient impurity transportation and collection system, realizing centralized processing of impurities. This not only reduces the pollution of the internal environment of the power plant chamber 1 by impurities and reduces the workload of secondary cleaning, but also prevents impurities from clogging the cleaning components or filter structure, extending the service life of the cleaning components and the flexible filter sleeve 5.

[0029] As a further embodiment of the present invention, a flexible brush plate 17 is provided on the opposite side of the cleaning plate 7, which is capable of further cleaning the flexible filter sleeve 5.

[0030] As a further embodiment of the present invention, the limiting plate 9 is provided with a guide groove adapted to the sliding plate 8, and the sliding plate 8 is slidably embedded in the guide groove.

[0031] As a further embodiment of the present invention, a one-way valve is connected in series on the output pipe 15, and a detachable dust collection drawer is provided at the bottom of the waste discharge box 16.

Claims

1. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve, comprising a thermal power plant chamber (1), characterized in that: The thermal power plant chamber (1) has an air inlet (2) and an air outlet (3) through it on both sides. Ventilation and heat dissipation blades (4) are installed on the air inlet (2) and the air outlet (3). The interior of the thermal power plant chamber (1) is equipped with a flexible filter screen (5) with the function of intercepting impurities, corresponding to the installation positions of the air inlet (2) and the air outlet (3). The flexible filter screen (5) is designed to be compatible with the structure of the air inlet (2) and the air outlet (3), and can effectively intercept the airflow flowing through the air inlet (2) and the exhaust airflow flowing through the air outlet (3), thereby filtering and blocking pollutants such as particulate matter and impurities mixed in the airflow, and ensuring the cleanliness of the operating environment of the equipment inside the thermal power plant chamber (1). The flexible filter sleeve (5) is provided with a cleaning component that can continuously clean it; the flexible filter sleeve (5) is provided with a driving component that can drive it to rotate.

2. The ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve according to claim 1, characterized in that: The drive assembly includes four electric rotating shafts (6) arranged inside the thermal power plant chamber (1). The four electric rotating shafts (6) support the flexible filter sleeve (5) to form a closed sleeve structure. By positioning and adjusting the tension of the rotating shafts (6), the outer surface of the flexible filter sleeve (5) is tightly fitted with the inner wall of the air inlet (2) and the air outlet (3), ensuring the airflow channel's sealing fit and the full coverage of filtration and interception.

3. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 2, characterized in that: The cleaning assembly includes two sets of cleaning plates (7) for cleaning the flexible filter sleeve (5). The cleaning plate (7) adopts a U-shaped structure design, and its opening size is adapted to the thickness of the flexible filter sleeve (5). The cleaning plate (7) forms a close contact with the inner and outer surfaces of the flexible filter sleeve (5) through the two side walls of the U-shaped structure, and can simultaneously clean the impurities attached to the two sides of the flexible filter sleeve (5) during relative movement, so as to ensure the stable performance of the filter screen. Each of the two sets of cleaning plates (7) is fixedly connected to a sliding plate (8) on one side of each other. Both sliding plates (8) are connected to a limiting plate (9), which is fixedly connected inside the thermal power plant chamber (1). Both sliding plates (8) are fixedly connected to a toothed plate (10) that can drive their relative movement. Both toothed plates (10) are elastically connected to the limiting plate (9) by springs. Both toothed plates (10) mesh with an incomplete gear (11) that can drive their relative movement. A power component is fixedly connected to the shaft of the incomplete gear (11).

4. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 3, characterized in that: The power unit includes a drive motor (12) fixedly connected to the outside of the thermal power plant chamber (1). The output shaft of the drive motor (12) passes through and extends into the thermal power plant chamber (1) and is fixedly connected to the shaft of the incomplete gear (11).

5. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 4, characterized in that: The cleaning assembly also includes an adsorption cylinder (13) fixedly connected to the limiting plate (9). Each adsorption cylinder (13) has an adsorption hole (14) that can adsorb impurities brushed off inside the flexible filter sleeve (5). An output pipe (15) is fixedly connected to the adsorption cylinder (13). A waste discharge box (16) is fixedly connected to the upper end of the output pipe (15). The waste discharge box (16) is fixedly connected to the upper end of the thermal power plant chamber (1).

6. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 3, characterized in that: The cleaning plate (7) is provided with a flexible brush plate (17) on the opposite side, which is capable of further cleaning the flexible filter sleeve (5).

7. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 3, characterized in that: The limiting plate (9) is provided with a guide groove that is adapted to the sliding plate (8), and the sliding plate (8) is slidably embedded in the guide groove.

8. A ventilation and heat dissipation device for thermal power plants with a continuously cleanable flexible filter sleeve as described in claim 5, characterized in that: A one-way valve is connected in series on the output pipe (15), and a detachable dust collection drawer is provided at the bottom of the waste discharge box (16).

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