Cleaning device for a cooling air filter device of a hydroelectric generator

Abstract

This utility model provides a cleaning device for a cooling air filter of a hydro-generator. The cleaning device includes a filter box, inside which multiple sets of filter elements are evenly installed. Insert plates are installed at the bottom of each filter element, and multiple sets of slot plates are evenly installed at the bottom of the filter box. This utility model cleans the filter elements by installing scrapers inside the filter box, positioned between two sets of filter elements. Scrapers are located on both sides of each filter element. The scrapers are connected to a lifting plate via connecting blocks. A motor-driven screw rotates, controlling the lifting plate to rise and fall, which in turn moves the scrapers. The scrapers remove dust from the filter elements, achieving cleaning. Compared to manual cleaning, this device is entirely motor-driven, significantly saving labor. Furthermore, the through-slots at the bottom of the filter box allow the dust scraped off by the scrapers to automatically collect in the base for easy cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy and hydropower technology, and in particular relates to a cleaning device for a cooling air filter device for a hydro generator. Background Technology

[0002] A hydroelectric generator is a device that uses a hydroelectric turbine as its prime mover to convert water energy into electrical energy. It is the core power equipment for power generation in a hydroelectric power station. When water flows and impacts the turbine runner, the water energy is first converted into mechanical energy. The turbine's main shaft then drives the generator rotor to rotate. Through the principle of electromagnetic induction, the mechanical energy is finally converted into electrical energy for output. The rotational speed directly determines the frequency of the output AC power. Hydroelectric generators mainly use synchronous generators and are typically available in vertical and horizontal configurations. Large and medium-sized units mostly use a vertical arrangement. They mainly consist of a stator, rotor, frame, and thrust bearing. It consists of components such as guide bearings and coolers. The cooling method is usually air cooling or internal cooling. Since the world's first hydroelectric power station was built in France in 1878, the technology of hydroelectric generators has continued to develop and the single unit capacity has continued to increase. For example, the 700,000-kilowatt unit of the Three Gorges Power Station, the 800,000-kilowatt unit of the Xiangjiaba Power Station, and the million-kilowatt unit of the Baihetan Power Station all represent the world's advanced level. It starts up quickly and operates flexibly. In addition to conventional power generation, it is especially suitable for undertaking grid peak shaving and emergency backup tasks, and is an important part of clean and renewable energy power generation.

[0003] During the installation of a hydro-generator set, a cooling air filter device needs to be installed. This device is an important auxiliary equipment to ensure the safe and efficient operation of the generator. Its main function is to purify the cooling air entering the generator, preventing dust and impurities from entering and ensuring the normal operation of the generator's internal electrical structure. However, after long-term use, the filter element inside the cooling air filter device becomes covered with dust, resulting in a decrease in air filtration efficiency. Dust cleaning is required, which is usually done manually. For a large cooling air filter device, manual cleaning is inconvenient and time-consuming. It would be better to install a cleaning structure directly inside the cooling air filter device. Therefore, it is necessary to provide a cleaning device for the cooling air filter device of the hydro-generator to solve the above problems. Utility Model Content

[0004] The technical content of this utility model is to provide a cleaning device for a cooling air filtration device for a hydro generator.

[0005] To solve the above problems, this utility model provides a cleaning device for a water turbine generator cooling air filtration device, including a filter box. Multiple sets of filter elements are evenly installed inside the filter box. Insert plates are installed at the bottom of each filter element. Multiple sets of slot plates are evenly installed at the bottom of the filter box. Connecting pipes are installed on both sides of the filter box. A base is installed at the bottom of the filter box. A sealing plate is installed on the front of the base. Fixing blocks are installed on both sides of the sealing plate. Multiple sets of scrapers are evenly installed inside the bottom of the filter box. Connecting blocks are installed on both sides of the scrapers. A lifting plate is fixedly connected to the side of the connecting block. Two sets of threaded sleeves are symmetrically installed on the lifting plate. A lead screw is installed in each threaded sleeve. Mounting plates are installed at the top and bottom of the lead screw. Two sets of limiting blocks are symmetrically installed on the side of the lifting plate. A motor is connected to the top of the lead screw. Connecting plates are installed on both sides of the filter box.

[0006] As a further solution of this utility model, the size of the filter element is adapted to the internal size of the filter box, the upper end of the filter element is located in the through groove opened at the top of the filter box, the slot plate is fixedly installed at the bottom of the inside of the filter box, and the top of the slot plate is provided with a slot adapted to the insert plate. By aligning the insert plate with the slot and inserting it into the slot, the filter element can be vertically installed into the inside of the filter box.

[0007] As a further solution of this utility model, a circular through groove is provided in the middle of both sides of the filter box, and the connecting pipe is installed in the groove. The connecting pipe is connected to the inside of the filter box. The top of the base is set as an open structure. The base is fixedly installed at the bottom of the filter box. The front of the base is set as an open structure and is adapted to the size of the sealing plate. The fixing blocks on both sides of the sealing plate are fixedly installed in the fixing grooves opened on both sides of the front of the base by fixing bolts. The bottom of the base is set as a flat structure so as to fix the device in the hydro-generator station.

[0008] As a further solution of this utility model, the scraper is located between two sets of slot plates. The thickness of the slot plates is the same as the thickness of the filter element, and their sides are flush. The scraper is configured with a rhomboid structure, and its two sides are in contact with the opposite side of the two sets of slot plates. A set of scrapers is installed between two adjacent sets of slot plates in the filter box. A set of scrapers is provided on both sides of the filter element. The length of the scraper is the same as the length of the filter element. The top and bottom of the connecting blocks installed on both sides of the scraper are flush with the top and bottom of the sides of the scraper. The connecting blocks are set in the vertical through slots opened on both sides of the filter box. Multiple sets of vertical through slots are evenly opened on both sides of the filter box. The verticality of the vertical through slots is the same as the number of scrapers. The width of the vertical through slots is the same as the width of the connecting blocks. The bottom of the vertical through slots is flush with the bottom of the filter element, and the top of the vertical through slots is flush with the top of the part of the filter element inside the filter box. The scraper can be raised and lowered by the connecting blocks.

[0009] As a further solution of this utility model, the side of the lifting plate is fixedly connected to the side of multiple sets of connecting blocks on one side of the filter box. The length of the lifting plate is the same as the length of the filter box. The threaded sleeve is fixedly installed in the mounting holes opened on both sides of the lifting plate. A set of mounting plates is installed on the bottom and top of both sides of the filter box. The width of the mounting plate is greater than the width of the lifting plate. The bottom of the threaded rod is rotatably connected to the bottom of the bottom set of mounting plates. The top of the threaded rod passes through the through hole opened on the top set of mounting plates. The motor is fixedly installed on the top of the top mounting plate. Four sets of motors are symmetrically installed on the top of the filter box. The bottom of the motor is connected to the top of the threaded rod, so that the motor can drive the threaded rod to rotate. The four sets of motors are synchronously controlled by a controller, so that the synchronous rotation of the four sets of threaded rods can be achieved.

[0010] As a further solution of this utility model, the connecting plate is installed on the side of two sets of mounting plates on one side of the filter box. The connecting plate is fixedly connected to the mounting plate. The top of the connecting plate is flush with the top of the top set of mounting plates, and the bottom of the connecting plate is flush with the bottom of the bottom set of mounting plates. The width of the connecting plate is the same as the width of the mounting plate. The limiting block is set in two sets of limiting grooves symmetrically opened on the side of the connecting plate. The top and bottom of the limiting groove are flush with the top and bottom of the vertical through groove. The limiting block is set as a T-shaped structure, and the limiting groove is set as a structure adapted to it. Thus, the lifting plate is horizontally limited by the limiting block.

[0011] As a further solution of this utility model, the scraper is configured as a frame structure, the middle part of which is configured as a through groove structure. Multiple sets of through grooves are evenly opened at the bottom of the filter box. The through grooves are located directly below the scraper. The size and number of through grooves correspond to the scraper, so that dust falls into the base.

[0012] Compared with related technologies, the cleaning device of the water turbine generator cooling air filtration device provided by this utility model has the following beneficial effects:

[0013] 1. This utility model features a scraper installed inside the filter box, positioned between two sets of filter elements. Scrapers are located on both sides of each set of filter elements. The scrapers are connected to a lifting plate via a connecting block. A motor-driven screw rotates, controlling the lifting plate's movement, which in turn moves the scrapers. The scrapers remove dust from the filter elements, achieving cleaning. Compared to manual cleaning, this device is entirely motor-driven, significantly saving manpower. Furthermore, the groove at the bottom of the filter box allows the dust scraped off by the scrapers to automatically collect in the base for easy cleaning.

[0014] 2. This utility model installs a limiting block on the side of the lifting plate. The limiting block is set in two sets of limiting grooves symmetrically opened on the side of the connecting plate. The top and bottom of the limiting grooves are flush with the top and bottom of the vertical through grooves on both sides of the filter box. The limiting block is set as a T-shaped structure, and the limiting groove is set as a structure that matches it. Thus, the lifting plate is horizontally limited by the limiting block, so that the lifting plate can only move in the vertical direction. This prevents the lateral force from being generated between the threaded sleeve and the threaded rod, ensuring the stability of the structure of both. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a side perspective three-dimensional structural diagram of the cleaning device of the water turbine generator cooling air filtration device of this utility model;

[0017] Figure 2 This is a bottom-view perspective view of the cleaning device of the cooling air filtration device for the hydro-generator of this utility model.

[0018] Figure 3 This is a top view of the filter box structure of the cleaning device of the water turbine generator cooling air filtration device of this utility model;

[0019] Figure 4 This is a cross-sectional view of the filter box of the cleaning device in the cooling air filtration device for the hydro-generator of this utility model.

[0020] Figure 5 This is a bottom view of the filter box structure of the cleaning device of the cooling air filtration device for the hydro-generator of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the filter box of the cleaning device of the water turbine generator cooling air filtration device of this utility model;

[0022] Figure 7 This is a top view of the mounting plate of the cleaning device in the water turbine generator cooling air filter device of this utility model;

[0023] Figure 8 This is a top view of the lifting plate structure of the cleaning device of the water turbine generator cooling air filtration device of this utility model;

[0024] Figure 9 This is a top view schematic diagram of the scraper structure of the cleaning device of the cooling air filtration device for the hydro-generator of this utility model;

[0025] Figure 10 This is a side view of the filter element of the cleaning device in the cooling air filtration device for the hydro-generator of this utility model.

[0026] In the diagram: 1. Filter box; 2. Filter element; 3. Insert plate; 4. Slot plate; 5. Connecting pipe; 6. Base; 7. Sealing plate; 8. Fixing block; 9. Scraper; 10. Connecting block; 11. Lifting plate; 12. Threaded sleeve; 13. Lead screw; 14. Mounting plate; 15. Limiting block; 16. Motor; 17. Connecting plate. Detailed Implementation

[0027] Please refer to the following: Figure 1-10 The cleaning device for the cooling air filtration system of a hydro-generator includes a filter box 1. Multiple filter elements 2 are evenly installed inside the filter box 1. Insert plates 3 are installed at the bottom of the filter elements 2. Multiple slot plates 4 are evenly installed at the bottom of the filter box 1. Connecting pipes 5 are installed on both sides of the filter box 1. A base 6 is installed at the bottom of the filter box 1. A sealing plate 7 is installed on the front of the base 6. Fixing blocks 8 are installed on both sides of the sealing plate 7. Multiple scrapers 9 are evenly installed inside the bottom of the filter box 1. Connecting blocks 10 are installed on both sides of the scrapers 9. A lifting plate 11 is fixedly connected to the side of the connecting block 10. Two sets of threaded sleeves 12 are symmetrically installed on the lifting plate 11. A lead screw 13 is installed in the threaded sleeve 12. Mounting plates 14 are installed at the top and bottom of the lead screw 13. Two sets of limiting blocks 15 are symmetrically installed on the side of the lifting plate 11. A motor 16 is connected to the top of the lead screw 13. Connecting plates 17 are installed on both sides of the filter box 1.

[0028] Preferably, the size of the filter element 2 is adapted to the internal size of the filter box 1. The upper end of the filter element 2 is located in the through groove opened at the top of the filter box 1. The slot plate 4 is fixedly installed at the bottom of the filter box 1. The top of the slot plate 4 is provided with a slot adapted to the insert plate 3. By aligning the insert plate 3 with the slot and inserting it into the slot, the filter element 2 can be vertically installed into the inside of the filter box 1. This structure makes it very convenient to install and remove the filter element 2 in the filter box 1.

[0029] Preferably, the filter box 1 has circular through slots in the middle of both sides, and the connecting pipes 5 are installed in them. The connecting pipes 5 are connected to the inside of the filter box 1. The device can be installed on the hydro-generator through two sets of connecting pipes 5, so that the cooling air can be filtered through the device. The top of the base 6 is set as an open structure. The base 6 is fixedly installed at the bottom of the filter box 1. The front of the base 6 is set as an open structure and is adapted to the size of the sealing plate 7. The fixing blocks 8 on both sides of the sealing plate 7 are fixedly installed in the fixing slots opened on both sides of the front of the base 6 by fixing bolts, so as to realize the fixed installation of the sealing plate 7 on the front of the base 6, thereby realizing the closure of the base 6. The bottom of the base 6 is set as a flat structure so as to fix the device in the hydro-generator station.

[0030] Preferably, the scraper 9 is located between two sets of slot plates 4. The thickness of the slot plates 4 is the same as the thickness of the filter element 2, and the two sides are flush. The scraper 9 is set with a diamond structure. The two sides of the scraper 9 are in contact with the opposite side of the two sets of slot plates 4. A set of scrapers 9 is installed between two adjacent sets of slot plates 4 in the filter box 1. A set of scrapers 9 is provided on both sides of the filter element 2. The length of the scraper 9 is the same as the length of the filter element 2. The top and bottom of the connecting blocks 10 installed on both sides of the scraper 9 are flush with the top and bottom of the two sides of the scraper 9. The connecting blocks 10 are set in the vertical through grooves opened on both sides of the filter box 1. Multiple sets of vertical through grooves are evenly opened on both sides of the filter box 1. The verticality of the vertical through grooves is the same as the number of scrapers 9. The width of the vertical through grooves is the same as the width of the connecting blocks 10. The bottom of the vertical through grooves is flush with the bottom of the filter element 2. The top of the vertical through grooves is flush with the top of the part of the filter element 2 inside the filter box 1. The scraper 9 can be raised and lowered by the connecting blocks 10.

[0031] Preferably, the side of the lifting plate 11 is fixedly connected to the side of multiple sets of connecting blocks 10 on one side of the filter box 1, thereby realizing the fixed installation of the lifting plate 11 on both sides of the filter box 1. The length of the lifting plate 11 is the same as the length of the filter box 1. The threaded sleeve 12 is fixedly installed in the mounting holes opened on both sides of the lifting plate 11. A set of mounting plates 14 is installed on the bottom and top of both sides of the filter box 1. The width of the mounting plates 14 is greater than the width of the lifting plate 11. The bottom of the threaded rod 13 is rotatably connected to the bottom of the bottom set of mounting plates 14. The top of the threaded rod 13 passes through the through hole opened on the top set of mounting plates 14. The motor 16 is fixedly installed on the top of the top mounting plate 14. Four sets of motors 16 are symmetrically installed on the top of the filter box 1. The bottom of motor 16 is connected to the top of screw 13, and motor 16 can drive screw 13 to rotate. Four motors 16 are synchronously controlled by a controller, so that the four screws 13 can rotate synchronously. This causes the four screw sleeves 12 on the two lifting plates 11 to move up and down synchronously along the four screws 13, thereby driving the two lifting plates 11 to move up and down synchronously. This causes the connecting block 10, which is fixedly connected to the lifting plate 11, to move up and down in the vertical through groove. This enables the scraper 9 between the two connecting blocks 10 to move up and down between the two filter elements 2. The multiple scrapers 9 inside the filter box 1 move up and down synchronously, so that the two sides of multiple filter elements 2 can be scraped at the same time.

[0032] Preferably, the connecting plate 17 is installed on the side of the two sets of mounting plates 14 on one side of the filter box 1. The connecting plate 17 is fixedly connected to the mounting plate 14. The top of the connecting plate 17 is flush with the top of the top set of mounting plates 14, and the bottom of the connecting plate 17 is flush with the bottom of the bottom set of mounting plates 14. The width of the connecting plate 17 is the same as the width of the mounting plate 14. Thus, the two sets of connecting plates 17 are fixedly connected through the mounting plate 14. The limiting block 15 is set in two sets of limiting grooves symmetrically opened on the side of the connecting plate 17. The top and bottom of the limiting groove are flush with the top and bottom of the vertical through groove. The limiting block 15 is set as a T-shaped structure, and the limiting groove is set as a structure adapted to it. Thus, the lifting plate 11 is horizontally limited by the limiting block 15, so that the lifting plate 11 can only move in the vertical direction, so that no lateral force is generated between the threaded sleeve 12 and the threaded rod 13, ensuring the structural stability of the two.

[0033] Preferably, the scraper 9 is configured as a frame structure with a through groove structure in the middle. Multiple through grooves are evenly opened at the bottom of the filter box 1. The through grooves are located directly below the scraper 9. The size and number of through grooves correspond to the scraper 9. After the scraper 9 scrapes the dust off the filter element 2, the dust falls into the base 6 through the through groove at the bottom of the filter box 1, thereby collecting the dust for subsequent cleaning.

[0034] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. The technical details of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art, understanding the principle of the above utility model, can clearly understand the specifics of its power mechanism, power supply system, and control system. The control method in the application document is automatic control via a controller. The controller's control circuit can be implemented through simple programming by those skilled in the art. Those skilled in the art can connect all electrical components and their compatible power supplies via wires, and should select a suitable controller according to the actual situation to meet control requirements. The specific connections and control sequence, and the detailed connection methods, are well-known technologies in the field. This document mainly introduces the working principle and process, and will not describe the electrical control.

[0035] All standard parts used can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The fixing bolt of this device is a bolt, and the fixing hole is a screw hole. The machinery, parts and equipment all adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A cleaning device for a water turbine generator cooling air filter device, comprising a filter box (1), the inside of the filter box (1) is uniformly provided with a plurality of groups of filter cartridges (2), characterized in that: The bottom of the filter element (2) is fitted with a plate (3), and the bottom of the filter box (1) is fitted with multiple sets of slot plates (4). Connecting pipes (5) are installed on both sides of the filter box (1). A base (6) is installed at the bottom of the filter box (1). A sealing plate (7) is installed on the front of the base (6). Fixing blocks (8) are installed on both sides of the sealing plate (7). Multiple scrapers (9) are evenly installed inside the bottom of the filter box (1). Connecting blocks (9) are installed on both sides of the scrapers (9). 10) A lifting plate (11) is fixedly connected to the side of the connecting block (10). Two sets of thread sleeves (12) are symmetrically installed on the lifting plate (11). A thread rod (13) is installed in the thread sleeve (12). An installation plate (14) is installed on the top and bottom of the thread rod (13). Two sets of limiting blocks (15) are symmetrically installed on the side of the lifting plate (11). A motor (16) is connected to the top of the thread rod (13). A connecting plate (17) is installed on both sides of the filter box (1).

2. A cleaning device for a cooling air filter arrangement of a hydroelectric generator according to claim 1, characterized in that: The size of the filter element (2) is adapted to the internal size of the filter box (1). The upper end of the filter element (2) is located in the through groove opened at the top of the filter box (1). The slot plate (4) is fixedly installed at the bottom of the filter box (1). The top of the slot plate (4) is provided with a slot adapted to the insert plate (3).

3. The cleaning device of a cooling air filter device of a hydroelectric generator according to claim 1, characterized in that: The filter box (1) has a circular through groove in the middle of both sides, and the connecting pipe (5) is installed in it. The connecting pipe (5) is connected to the inside of the filter box (1). The top of the base (6) is set as an open structure. The base (6) is fixedly installed at the bottom of the filter box (1). The front of the base (6) is set as an open structure and is adapted to the size of the sealing plate (7). The fixing blocks (8) on both sides of the sealing plate (7) are fixedly installed in the fixing grooves opened on both sides of the front of the base (6) by fixing bolts. The bottom of the base (6) is set as a flat structure.

4. The cleaning device of a hydroelectric generator cooling air filter device according to claim 1, characterized in that: The scraper (9) is located between two sets of slot plates (4). The thickness of the slot plates (4) is the same as the thickness of the filter element (2), and their sides are flush. The scraper (9) is configured with a rhomboid structure. The two sides of the scraper (9) are in contact with the opposite side of the two sets of slot plates (4). A set of scrapers (9) is installed between two adjacent sets of slot plates (4) in the filter box (1). A set of scrapers (9) is provided on both sides of the filter element (2). The length of the scraper (9) is the same as the length of the filter element (2). The two sides of the scraper (9) are flush. The top and bottom of the installed connecting block (10) are flush with the top and bottom of the two sides of the scraper (9). The connecting block (10) is set in the vertical through grooves opened on both sides of the filter box (1). Multiple sets of vertical through grooves are evenly opened on both sides of the filter box (1). The verticality of the vertical through grooves is the same as the number of scrapers (9). The width of the vertical through grooves is the same as the width of the connecting block (10). The bottom of the vertical through grooves is flush with the bottom of the filter element (2). The top of the vertical through grooves is flush with the top of the part of the filter element (2) inside the filter box (1).

5. The cleaning device of a hydroelectric generator cooling air filter device according to claim 1, characterized in that: The side of the lifting plate (11) is fixedly connected to the side of multiple sets of connecting blocks (10) on one side of the filter box (1). The length of the lifting plate (11) is the same as the length of the filter box (1). The threaded sleeve (12) is fixedly installed in the mounting holes opened on both sides of the lifting plate (11). A set of mounting plates (14) is installed on the bottom and top of both sides of the filter box (1). The width of the mounting plate (14) is greater than the width of the lifting plate (11). The bottom of the threaded rod (13) is connected to a set of bottom mounting plates. The bottom of the mounting plate (14) is rotatably connected, and the top of the lead screw (13) passes through the through hole opened on the top set of mounting plates (14). The motor (16) is fixedly installed on the top of the top mounting plate (14). Four sets of motors (16) are symmetrically installed on the top of the filter box (1). The bottom of the motor (16) is connected to the top of the lead screw (13), so that the lead screw (13) can be driven to rotate by the motor (16). The four sets of motors (16) are synchronously controlled by a controller.

6. The cleaning device of a hydroelectric generator cooling air filter device according to claim 1, characterized in that: The connecting plate (17) is installed on the side of two sets of mounting plates (14) on one side of the filter box (1). The connecting plate (17) is fixedly connected to the mounting plate (14). The top of the connecting plate (17) is flush with the top of the top set of mounting plates (14). The bottom of the connecting plate (17) is flush with the bottom of the bottom set of mounting plates (14). The width of the connecting plate (17) is the same as the width of the mounting plate (14). The limiting block (15) is set in two sets of limiting grooves symmetrically opened on the side of the connecting plate (17). The top and bottom of the limiting groove are flush with the top and bottom of the vertical through groove. The limiting block (15) is set as a T-shaped structure, and the limiting groove is set as a structure adapted to it.

7. The cleaning device of a hydroelectric generator cooling air filter device according to claim 1, characterized in that: The scraper (9) is configured as a frame structure, with a through groove structure in the middle. Multiple sets of through grooves are evenly opened at the bottom of the filter box (1). The through grooves are located directly below the scraper (9), and the size and number of the through grooves correspond to those of the scraper (9).

Images