Narrow gap cleaning device for worm type water turbine and cleaning method thereof

Abstract

This invention discloses a peristaltic cleaning device and method for narrow gaps in hydro-generators, comprising an airbag unit, a frame, a cleaning unit, and an air supply control unit. Two airbag units are located on opposite sides of the frame, with one end fixedly connected to the frame and the other end slidably connected to the frame. The cleaning unit and air supply control unit are mounted on the frame. The cleaning unit cleans the hydro-generator, and the air supply control unit controls the air supply to the airbag units, causing them to expand and contract, thus supporting the frame in a peristaltic movement. When the airbag unit expands, the cleaning device can fit into the gap between the hydro-generator stator and rotor. When one end of the airbag unit releases air, the airbag unit contracts, allowing the cleaning device to move within the gap. This cleaning device significantly improves the cleaning efficiency and effectiveness of cleaning the gap between the stator and rotor of large hydro-generators.

Description

Technical Field

[0001] This invention relates to the field of generator set maintenance equipment technology, and in particular to a peristaltic turbine narrow gap cleaning device and its cleaning method. Background Technology

[0002] Hydropower turbines, as important hydroelectric power generation equipment, play a crucial role in the energy sector. However, during long-term operation, dirt, impurities, and sediment easily accumulate in the narrow spaces inside the turbine. Traditional cleaning methods often have many limitations. For example, manual cleaning is inefficient and difficult to effectively reach some narrow and complex spaces, and may also pose high safety risks. Using conventional cleaning tools and methods may not be able to thoroughly remove the deposits in the narrow spaces, leading to a gradual decline in turbine performance, reduced efficiency, and even potential malfunctions. Against this backdrop, there is an urgent need for a highly efficient, safe, and reliable cleaning device specifically designed for the narrow spaces of hydropower turbines. This device should be able to penetrate these hard-to-reach narrow spaces and effectively remove various dirt and impurities to ensure the normal operation and efficient power generation of the turbine. This need led to the development of the peristaltic hydropower turbine narrow-gap cleaning device of this invention. Summary of the Invention

[0003] To address the existing technical problems, the main objective of this invention is to provide a peristaltic turbine narrow gap cleaning device and cleaning method, in order to solve the problems of low cleaning efficiency and poor cleaning effect between the stator and rotor of large hydro generators.

[0004] The technical solution adopted in this invention is: a peristaltic water turbine narrow gap cleaning device, including a frame and a power transmission device, a walking device, a striking device and a sound acquisition device mounted on the frame; wherein the power transmission device provides power support for the robot, and the walking device is a peristaltic water turbine narrow gap cleaning device including an airbag unit, a frame, a cleaning unit and an air supply control unit. The two airbag units are respectively located on both sides of the frame. One end of the airbag unit is fixedly connected to the frame, and the other end is slidably connected to the frame. The cleaning unit and the air supply control unit are mounted on the frame. The cleaning unit is used to clean the water turbine, and the air supply control unit is used to control the air supply to the airbag unit so that the airbag unit expands and contracts, thereby supporting the frame to move peristally.

[0005] The airbag unit includes a first inflatable airbag, a telescopic airbag, and a second inflatable airbag. The first inflatable airbag and the telescopic airbag are connected by a first connecting structure, and the telescopic airbag and the second inflatable airbag are connected by a second connecting structure. Each of the first inflatable airbag, the telescopic airbag, and the second inflatable airbag is connected to an air supply control unit. The first connecting structure is fixedly connected to one end of the frame, and the second connecting structure is guided and slidably connected to the other end of the frame.

[0006] The first connecting structure is provided with a first connecting plate, which is fixedly connected to one end of the frame. The second connecting structure is provided with a second connecting plate, and the second connecting plates of the airbag units on both sides are respectively connected to the two ends of the sliding plate. The sliding plate is slidably connected to the frame guide.

[0007] One end of the frame is connected to a guide frame, and a sliding groove is provided on the guide frame. The second connecting structure is guided to slide along the sliding groove by a sliding column.

[0008] The cleaning unit is mounted on a slide, and both ends of the slide are slidably connected to the frame guide. A drive device is also mounted on the frame and connected to the slide to drive the slide to move back and forth along the frame.

[0009] The upper side of the frame is equipped with guide rails at both ends of the slide block, and sliders are slidably mounted on the guide rails. The two ends of the slide block are respectively mounted on the sliders on both sides.

[0010] The drive device includes a motor, a drive wheel, a driven wheel, and a belt. A motor is installed at one end of the frame, a drive wheel is installed on the output shaft of the motor, and a driven wheel is installed at one end of the frame through a wheel seat. The belt is fitted onto the drive wheel and the driven wheel, and the belt is connected to the slide.

[0011] It also includes a vision unit, which includes a connector and a camera. One end of the connector is connected to the end of the frame, and the other end is provided with a mounting groove, in which the camera is installed.

[0012] The gas supply control unit is powered by a battery mounted on the frame or by an umbilical cable.

[0013] The cleaning method using the aforementioned peristaltic turbine narrow gap cleaning device is used to clean the gap between the stator and rotor of a turbine. The cleaning method includes the following steps:

[0014] S1. With the airbag unit venting, first place the peristaltic turbine narrow gap cleaning device into the gap between the turbine stator and the turbine rotor.

[0015] S2. While the peristaltic turbine narrow gap cleaning device is limited, the air supply control unit is controlled to inflate the airbag unit, the airbag unit expands, and the airbag unit abuts against the turbine stator and turbine rotor.

[0016] S3. The air supply control unit controls the second expansion airbag to vent, and then the air supply control unit controls the telescopic airbag to vent. At this time, the telescopic airbag begins to contract, and at the same time, it drives the second expansion airbag to move towards the first expansion airbag.

[0017] S4. When the telescopic airbag is fully retracted, the air supply control unit inflates the second expansion airbag until the second expansion airbag comes into contact with the turbine stator and turbine rotor.

[0018] S5, the air supply control unit controls the exhaust of the first inflation airbag;

[0019] S6. The air supply control unit inflates the telescopic airbag, causing the telescopic airbag to extend, thereby moving the peristaltic turbine narrow gap cleaning device.

[0020] S7. Repeat S3-S6, and the peristaltic turbine narrow gap cleaning device moves up or down between the turbine stator and the turbine rotor; wherein, during the movement of the peristaltic turbine narrow gap cleaning device or when both the first expansion air bladder and the second expansion air bladder are inflated, the cleaning unit cleans the inner wall of the turbine stator or the outer wall of the turbine rotor.

[0021] The present invention has the following beneficial effects:

[0022] 1. The cleaning unit of this invention is used to clean a water turbine, and the air supply control unit is used to control the air supply to the airbag unit, causing the airbag unit to expand and contract, thereby supporting the peristaltic movement of the frame. When the airbag unit expands, the cleaning device can be positioned in the gap between the water turbine stator and the water turbine rotor. When one end of the airbag unit releases air, the airbag unit contracts, allowing the cleaning device to move within the gap. During the movement of the peristaltic water turbine narrow-gap cleaning device, or when both the first and second expansion airbags are inflated, the cleaning unit cleans the inner wall of the water turbine stator or the outer wall of the water turbine rotor. The cleaning device of this application significantly improves the cleaning efficiency and achieves better cleaning results in the gap between the stator and rotor of a large water turbine generator.

[0023] 2. By setting up a slide, multiple cleaning units can be installed on the slide, thereby increasing the cleaning area. At the same time, by driving the slide to reciprocate, the cleaning area can be further increased, and the cleaning effect can be improved. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram showing the state when the present invention is in use.

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 3 This is a schematic diagram of the airbag unit of the present invention.

[0028] Figure 4 This is a schematic diagram of the structure of the present invention with a cleaning unit mounted on the frame.

[0029] Figure 5 This is a schematic diagram of the structure of the visual unit of the present invention.

[0030] Figure 6 This is a schematic diagram of the main structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the airbag unit in its initial working state during use.

[0032] Figure 8 This is a schematic diagram of the second inflatable airbag in its deflating state during the use of the present invention.

[0033] Figure 9 This is a schematic diagram of the telescopic airbag in its deflating and retracting state during use, according to the present invention.

[0034] Figure label:

[0035] Airbag unit 1, first inflatable airbag 101, telescopic airbag 102, second inflatable airbag 103, first connecting structure 104, second connecting structure 105, first connecting plate 106, second connecting plate 107, air supply pipe 108, sliding plate 109, sliding column 110.

[0036] Frame 2, guide frame 201, slide 202;

[0037] Vision unit 3, connector 301, mounting slot 302, camera 303;

[0038] Cleaning unit 4, guide rail 401, slider 402, slide block 403, motor 404, drive wheel 405, driven wheel 406, belt 407;

[0039] 5. Gas supply control unit; 6. Umbilical cable; 7. Turbine stator; 8. Turbine rotor. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1:

[0042] See Figure 1-9 This invention provides a peristaltic cleaning device for narrow gaps in a hydro-turbine, comprising an airbag unit 1, a frame 2, a cleaning unit 4, and an air supply control unit 5. Two airbag units 1 are located on opposite sides of the frame 2, with one end fixedly connected to the frame 2 and the other end slidably connected to it. The cleaning unit 4 and the air supply control unit 5 are mounted on the frame 2. The cleaning unit 4 cleans the hydro-turbine, and the air supply control unit 5 controls the air supply to the airbag units 1, causing them to expand and contract, thus supporting the frame 2 in a peristaltic movement. When the airbag unit 1 expands, the cleaning device can fit into the gap between the hydro-turbine stator 7 and the hydro-turbine rotor 8. When one end of the airbag unit 1 releases air, it contracts, allowing the cleaning device to move within the gap. The cleaning unit 4 can be a brush, a roller brush, or a small vacuum cleaner with a brush or roller brush. This cleaning device significantly improves the cleaning efficiency and effectiveness of cleaning the gap between the stator and rotor of a large hydro-generator.

[0043] In this embodiment, see Figure 3 The airbag unit 1 includes a first inflatable airbag 101, a telescopic airbag 102, and a second inflatable airbag 103. The first inflatable airbag 101 and the telescopic airbag 102 are connected by a first connecting structure 104, and the telescopic airbag 102 and the second inflatable airbag 103 are connected by a second connecting structure 105. Air supply pipes 108 are connected to the first inflatable airbag 101, the telescopic airbag 102, and the second inflatable airbag 103, respectively, and each air supply pipe 108 is connected to an air supply control unit 5. The first connecting structure 104 is fixedly connected to one end of the frame 2, and the second connecting structure 105 is guided and slidably connected to the other end of the frame 2. Through this structure, when the first inflatable airbag 101, the telescopic airbag 102, and the second inflatable airbag 103 are inflated and deflated respectively, the load frame 2, the cleaning unit 4, and the air supply control unit 5 can move within a narrow gap. The air supply pipes 108 are flexible hoses.

[0044] See Figure 7 When the first inflatable airbag 101, the telescopic airbag 102 and the second inflatable airbag 103 are all inflated, the cleaning device is fixedly locked in the narrow gap.

[0045] See Figure 8 When the first inflatable airbag 101 or the second inflatable airbag 103 deflates, the cleaning device is trapped in the narrow gap by the second inflatable airbag 103 or the first inflatable airbag 101. Then the telescopic airbag 102 deflates and contracts, as... Figure 9 As shown, this causes the first inflatable airbag 101 to move toward the second inflatable airbag 103, or the second inflatable airbag 103 to move toward the first inflatable airbag 101. Then, either the first inflatable airbag 101 or the second inflatable airbag 103 inflates, or the second inflatable airbag 103 or the first inflatable airbag 101 deflates, and the telescopic airbag 102 inflates and extends. This process is repeated, allowing movement within a narrow gap.

[0046] To increase friction, convex rings may be provided on the outer walls of the first inflatable airbag 101 and the second inflatable airbag 103.

[0047] Further, see Figure 2 , 3 The first connecting structure 104 is provided with a first connecting plate 106, which is fixedly connected to one end of the frame 2. The second connecting structure 105 is provided with a second connecting plate 107. The second connecting plates 107 of the airbag units 1 on both sides are respectively connected to both ends of the sliding plate 109, and the sliding plate 109 is slidably connected to the frame 2. Through the above structure, it is easy to connect the airbag units 1 and the frame 2, and the second connecting plates 107 on both sides are respectively connected to the sliding plate 109, so that the airbag units 1 on both sides can extend and retract synchronously, enabling the robot to maintain straight-line movement.

[0048] Further, see Figure 4 One end of the frame 2 is connected to a guide frame 201, and a sliding groove 202 is provided on the guide frame 201. The second connecting structure 105 is guided to slide along the sliding groove 202 via a sliding column 110. Similarly, the sliding plate 109 can also be guided to slide along the sliding groove 202 via the sliding column 110.

[0049] See Figure 4 The cleaning unit 4 is mounted on the slide 403, and both ends of the slide 403 are slidably connected to the frame 2. A drive device is also mounted on the frame 2, and the drive device is connected to the slide 403 to drive the slide 403 to reciprocate along the frame 2. By setting the slide 403, multiple cleaning units 4 can be installed on the slide 403, thereby increasing the cleaning area. At the same time, the reciprocating motion of the slide 403 driven by the drive device not only further increases the cleaning area, but also improves the cleaning effect.

[0050] In application, the drive device can be a cylinder, which is controlled by the air supply control unit 5.

[0051] Specifically, guide rails 401 are installed on the upper side of the frame 2 and at both ends of the slide block 403. Slider blocks 402 are slidably installed on the guide rails 401, and the two ends of the slide block 403 are respectively installed on the slider blocks 402 on both sides.

[0052] In this embodiment, see Figure 4 The driving device includes a motor 404, a drive wheel 405, a driven wheel 406, and a belt 407. The motor 404 is mounted on one end of the frame 2, and the drive wheel 405 is mounted on the output shaft of the motor 404. The driven wheel 406 is mounted on the other end of the frame 2 via a wheel seat. The belt 407 is fitted onto the drive wheel 405 and the driven wheel 406, and is connected to the slide 403. The rapid forward and reverse rotation of the motor 404 drives the belt 407 to rotate. Since the belt 407 is connected to the slide 403, it drives the cleaning unit 4 to reciprocate rapidly, resulting in high cleaning efficiency.

[0053] Furthermore, it also includes a vision unit 3, which includes a connector 301 and a camera 303. One end of the connector 301 is connected to the end of the frame 2, and the other end is provided with a mounting groove 302, in which the camera 303 is mounted. The camera 303 provides an image of the interior of narrow gaps, facilitating control of the cleaning device and focused cleaning of key areas. The camera 303 is mounted in the mounting groove 302, making the structure flatter and more suitable for narrow spaces. In this embodiment, three cameras 303 are installed at different angles, thus providing a wider field of view.

[0054] In this embodiment, the gas supply control unit 5 is powered by a battery mounted on the frame 2 or by an umbilical cable 6.

[0055] Specifically, the air supply control unit 5 includes a controller and an air pump. The air pump is connected to the air supply pipe 108 through a three-way solenoid valve. By controlling the three-way solenoid valve, the inflation and deflation of each airbag in the airbag unit 1 can be controlled.

[0056] Example 2:

[0057] The cleaning method using the aforementioned peristaltic turbine narrow gap cleaning device is used to clean the gap between the stator and rotor of a turbine. The cleaning method includes the following steps:

[0058] S1. With the airbag unit 1 venting, first place the peristaltic turbine narrow gap cleaning device into the gap between the turbine stator 7 and the turbine rotor 8. This step is performed manually by the operator.

[0059] S2. With the peristaltic turbine narrow-gap cleaning device in the limiting position, control the air supply control unit 5 to inflate the airbag unit 1. The airbag unit 1 expands and presses against the turbine stator 7 and turbine rotor 8. Afterwards, the operator can release the airbag and leave. (See below) Figure 7 .

[0060] S3, see also Figure 8 The air supply control unit 5 controls the second inflation chamber 103 to release air. Then, see... Figure 9 The air supply control unit 5 controls the telescopic airbag 102 to release air. At this time, the telescopic airbag 102 begins to contract, and at the same time, it drives the second inflatable airbag 103 to move to the side of the first inflatable airbag 101.

[0061] S4. When the telescopic airbag 102 is retracted to the position, the air supply control unit 5 inflates the second expansion airbag 103 until the second expansion airbag 103 abuts against the turbine stator 7 and the turbine rotor 8.

[0062] S5, the air supply control unit 5 controls the first inflatable airbag 101 to release air.

[0063] S6. The air supply control unit 5 inflates the telescopic airbag 102, causing the telescopic airbag 102 to extend, thereby moving the peristaltic turbine narrow gap cleaning device.

[0064] S7. Repeat S3-S6, and the peristaltic turbine narrow gap cleaning device moves up or down between the turbine stator 7 and the turbine rotor 8; wherein, during the movement of the peristaltic turbine narrow gap cleaning device or when both the first expansion air bladder 101 and the second expansion air bladder 103 are inflated, the cleaning unit 4 cleans the inner wall of the turbine stator 7 or the outer wall of the turbine rotor 8.

Claims

1. A peristaltic water turbine narrow gap cleaning device, characterized in that, The system includes an airbag unit (1), a frame (2), a cleaning unit (4), and an air supply control unit (5). The two airbag units (1) are located on both sides of the frame (2). One end of the airbag unit (1) is fixedly connected to the frame (2), and the other end is slidably connected to the frame (2). The cleaning unit (4) and the air supply control unit (5) are installed on the frame (2). The cleaning unit (4) is used to clean the water turbine, and the air supply control unit (5) is used to control the air supply to the airbag unit (1) so that the airbag unit (1) expands and contracts, thereby supporting the frame (2) to move in a creeping manner. The airbag unit (1) includes a first inflatable airbag (101), a telescopic airbag (102), and a second inflatable airbag (103). The first inflatable airbag (101) and the telescopic airbag (102) are connected by a first connecting structure (104), and the telescopic airbag (102) and the second inflatable airbag (103) are connected by a second connecting structure (105). Air supply pipes (108) are respectively connected to the first inflatable airbag (101), the telescopic airbag (102), and the second inflatable airbag (103), and each air supply pipe (108) is respectively connected to the air supply control unit (5). The first connecting structure (104) is fixedly connected to one end of the frame (2), and the second connecting structure (105) is guided and slidably connected to the other end of the frame (2). The first connecting structure (104) is provided with a first connecting plate (106), which is fixedly connected to one end of the frame (2). The second connecting structure (105) is provided with a second connecting plate (107). The second connecting plates (107) of the airbag units (1) on both sides are respectively connected to the two ends of the sliding plate (109). The sliding plate (109) is guided and slidably connected to the frame (2). One end of the frame (2) is connected to a guide frame (201), and a slide groove (202) is provided on the guide frame (201). The second connecting structure (105) slides along the slide groove (202) through the sliding column (110). When the airbag unit (1) expands, the cleaning device can be stuck in the gap between the turbine stator (7) and the turbine rotor (8). When one end of the airbag unit (1) is vented, the airbag unit contracts again, so that the cleaning device can move in the gap. During the movement of the peristaltic turbine narrow gap cleaning device or when both the first and second expansion airbags are inflated, the cleaning unit (4) cleans the inner wall of the turbine stator (7) or the outer wall of the turbine rotor (8).

2. The peristaltic turbine narrow-gap cleaning device according to claim 1, characterized in that, The cleaning unit (4) is installed on the slide (403). The two ends of the slide (403) are respectively guided and slidably connected to the frame (2). The frame (2) is also equipped with a driving device, which is connected to the slide (403) to drive the slide (403) to move back and forth along the frame (2).

3. The peristaltic turbine narrow-gap cleaning device according to claim 2, characterized in that, The upper side of the frame (2) is provided with guide rails (401) at both ends of the slide block (403), and sliders (402) are slidably mounted on the guide rails (401). The two ends of the slide block (403) are respectively mounted on the sliders (402) on both sides.

4. The peristaltic turbine narrow-gap cleaning device according to claim 2 or 3, characterized in that, The drive device includes a motor (404), a drive wheel (405), a driven wheel (406), and a belt (407). The motor (404) is mounted on one end of the frame (2), the drive wheel (405) is mounted on the output shaft of the motor (404), the driven wheel (406) is mounted on one end of the frame (2) through a wheel seat, the belt (407) is fitted on the drive wheel (405) and the driven wheel (406), and the belt (407) is connected to the slide (403).

5. The peristaltic turbine narrow-gap cleaning device according to claim 1, characterized in that, It also includes a vision unit (3), which includes a connector (301) and a camera (303). One end of the connector (301) is connected to the end of the frame (2), and the other end is provided with a mounting groove (302). The camera (303) is installed in the mounting groove (302).

6. The peristaltic turbine narrow-gap cleaning device according to claim 1, characterized in that, The gas supply control unit (5) is powered by a battery mounted on the frame (2) or by an umbilical cable (6).

7. A cleaning method using the peristaltic turbine narrow-gap cleaning device according to any one of claims 1-6, characterized in that, Used for cleaning the gap between the stator and rotor of a water turbine, the cleaning method includes the following steps: S1. With the airbag unit (1) venting, first place the peristaltic turbine narrow gap cleaning device into the gap between the turbine stator (7) and the turbine rotor (8); S2. When the peristaltic turbine narrow gap cleaning device is limited, the air supply control unit (5) is controlled to inflate the airbag unit (1), the airbag unit (1) expands, and the airbag unit (1) abuts against the turbine stator (7) and the turbine rotor (8). S3. The air supply control unit (5) controls the second expansion airbag (103) to vent, and then the air supply control unit (5) controls the telescopic airbag (102) to vent. At this time, the telescopic airbag (102) begins to contract, and at the same time, it drives the second expansion airbag (103) to move towards the first expansion airbag (101). S4. When the telescopic airbag (102) is retracted to the position, the air supply control unit (5) inflates the second expansion airbag (103) until the second expansion airbag (103) comes into contact with the turbine stator (7) and the turbine rotor (8). S5, the air supply control unit (5) controls the first inflation airbag (101) to vent; S6. The air supply control unit (5) inflates the telescopic airbag (102), and the telescopic airbag (102) extends, thereby moving the peristaltic turbine narrow gap cleaning device. S7. Repeat S3-S6, and the peristaltic turbine narrow gap cleaning device moves up or down between the turbine stator (7) and the turbine rotor (8); wherein, during the movement of the peristaltic turbine narrow gap cleaning device or when both the first expansion airbag (101) and the second expansion airbag (103) are inflated, the cleaning unit (4) cleans the inner wall of the turbine stator (7) or the outer wall of the turbine rotor (8).

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