A narrow gap cleaning device for a generator set stator and rotor

Abstract

The utility model discloses a narrow gap cleaning operation device of generator set stator and rotor, including drive assembly, guide rail subassembly and cleaning assembly, the cleaning assembly is installed on the guide rail subassembly and slides up and down, drive assembly is installed on the guide rail subassembly, and drive assembly is connected with the transmission of cleaning assembly, to drive cleaning assembly and move up and down along the guide rail subassembly, the cleaning assembly includes slide and nozzle, and the slide is connected with the sliding fit of guide rail subassembly, and drive assembly is connected with the transmission of slide, and the nozzle is installed on the slide, the utility model discloses through drive assembly drive cleaning assembly and move up and down along the guide rail subassembly reciprocating cleaning, and the cleaning efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of maintenance tools for hydro generators, and in particular to a cleaning device for the narrow gap between the stator and rotor of a generator set. Background Technology

[0002] After a hydro-generator completes one operating cycle, the inner wall of the stator and the outer wall of the rotor accumulate a significant amount of dust and dirt, which can severely impact normal operation. Traditional cleaning methods involve manually cleaning the inner stator and outer rotor walls separately while the generator rotor is lifted out. Without lifting the rotor, cleaning the dust from both surfaces becomes impossible due to the limited clearance between the stator and rotor. Existing solutions employ robotic devices to clean between the stator and rotor, such as Chinese patent document CN119467180A, published on February 18, 2025, which discloses a peristaltic turbine narrow-gap cleaning device. While this device offers good cleaning results, its practical cleaning efficiency is low. Therefore, this application proposes a generator set stator-rotor narrow-gap cleaning device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a generator set stator and rotor narrow gap cleaning device, which drives the cleaning component to move up and down along the guide rail component for cleaning, resulting in higher cleaning efficiency.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A generator set stator and rotor narrow gap cleaning device includes a drive assembly, a guide rail assembly, and a cleaning assembly. The cleaning assembly is slidably mounted on the guide rail assembly. The drive assembly is mounted on the guide rail assembly and is drivenly connected to the cleaning assembly to drive the cleaning assembly to move up and down along the guide rail assembly. The cleaning assembly includes a sliding plate and a nozzle. The sliding plate is slidably connected to the guide rail assembly. The drive assembly is drivenly connected to the sliding plate, and the nozzle is mounted on the sliding plate.

[0005] The cleaning assembly also includes a rotating tube and a first driver. The rotating tube is rotatably mounted on a slide plate. One end of the rotating tube is equipped with a nozzle, and the other end is used to connect to a cleaning pipe. A first transmission component is installed on the outer wall of the rotating tube. The first driver is mounted on the slide plate, and a second transmission component is installed on the output shaft of the first driver. The first transmission component and the second transmission component are connected in a transmission manner.

[0006] The slide plate is provided with mounting holes, and a bearing is installed in the mounting holes. The rotating tube passes through the mounting holes and the inner hole of the bearing.

[0007] The nozzle includes an extension tube, the lower end of which is provided with a bend tube, the central axis of which is offset from the central axis of the extension tube, and the upper end of the extension tube is connected to a rotating tube.

[0008] The upper end of the extension tube is provided with a flange, and a nut cap is also installed on the outside of the extension tube outside the flange. The nut cap is screwed and fixed to the rotating tube, and the flange abuts against the end of the rotating tube.

[0009] Both the first and second transmission components are gears, and the first and second transmission components mesh with each other for transmission.

[0010] Alternatively, both the first and second transmission components are pulleys, and the first and second transmission components are connected by a belt drive.

[0011] A rotary joint is installed at one end of the rotating tube that connects to the cleaning pipe, and the cleaning pipe is connected to the rotary joint.

[0012] The slide plate has rotating tubes installed on both sides of the first driver;

[0013] The cleaning pipeline includes a branch pipe, a tee pipe, and a main pipe. One port on the upper side of the tee pipe is connected to the main pipe, and the two ports on the lower side of the tee pipe are respectively connected to the branch pipe. The branch pipe is connected to the rotary joint.

[0014] The guide rail assembly includes an upper bracket, a lower bracket, and linear guide rails. The two ends of the two linear guide rails are fixedly installed on the upper bracket and the lower bracket, respectively. Slider blocks are slidably installed on the linear guide rails. The two ends of the slide plate are respectively installed on the sliders of the two linear guide rails on both sides. A limit seat is also installed on the upper bracket.

[0015] The drive assembly includes a mounting base, a second driver, a drive wheel, a transmission belt, and a driven wheel. The mounting base is mounted on one side of the upper bracket, the second driver is mounted on the mounting base, and the drive wheel is mounted on the output shaft of the second driver. The driven wheel is rotatably mounted on the lower bracket or on a linear guide rail located on one side of the second driver via a support. The transmission belt is fitted onto the drive wheel and the driven wheel. The slide plate is located on one side of the transmission belt, or a pressure plate is mounted on the slider located on one side of the transmission belt. The transmission belt passes through the pressure plate, connecting and fixing the transmission belt to the slide plate or slider.

[0016] The rack has a camera mounted on at least one side.

[0017] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0018] 1. This utility model uses a drive assembly to drive the cleaning assembly to move up and down along the guide rail assembly for cleaning, resulting in higher cleaning efficiency. In use, the nozzle is connected to a compressed air source via a hose, allowing it to blow away dust from the outer circumference of the rotor or the inner circumference of the stator. Alternatively, the nozzle can be connected to a dry ice cleaner via a hose, spraying liquid dry ice to clean dirt from the outer circumference of the rotor or the inner circumference of the stator.

[0019] 2. The first driver of this utility model is mounted on a sliding plate, and a second transmission component is mounted on the output shaft of the first driver. The first transmission component and the second transmission component are connected in a transmission connection. Through the above structure, the nozzle is driven to swing left and right, thereby expanding the working area of ​​the nozzle and further improving efficiency.

[0020] 3. By installing a rotary joint, this utility model allows the rotating tube to rotate continuously without reciprocating, thus enabling simultaneous cleaning of the outer circumferential wall of the rotor and the inner circumferential wall of the stator. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a diagram showing the usage state of this utility model.

[0023] Figure 2 This is a diagram showing the usage state of this utility model within a narrow gap.

[0024] Figure 3 This is a schematic diagram of the structure of this utility model.

[0025] Figure 4 This is a schematic diagram of the cleaning component of this utility model.

[0026] Figure 5 This is a cross-sectional structural diagram of the rotating tube and the sliding plate rotatably connected in the cleaning component of this utility model.

[0027] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0028] Figure label:

[0029] Stator 1, narrow gap 2, rotor 3;

[0030] Drive assembly 4, mounting base 41, second driver 42, drive wheel 43, transmission belt 44, driven wheel 45, support 46;

[0031] Guide rail assembly 5, upper bracket 51, linear guide rail 52, lower bracket 53, slider 54, pressure plate 55, limit seat 56;

[0032] Cleaning component 6, slide plate 61, mounting hole 611, bearing 612, rotating tube 62, nozzle 63, extension tube 631, angled tube 632, flange 633, nut cap 634, first transmission component 64, rotary joint 65, cleaning pipe 66, branch pipe 661, tee pipe 662, main pipe 663, first driver 67, second transmission component 68, belt 69. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0035] Example 1:

[0036] See Figure 2-6 A generator set stator and rotor narrow gap cleaning device includes a drive assembly 4, a guide rail assembly 5, and a cleaning assembly 6. The cleaning assembly 6 is slidably mounted on the guide rail assembly 5. The drive assembly 4 is mounted on the guide rail assembly 5 and is drively connected to the cleaning assembly 6 to drive the cleaning assembly 6 to move up and down along the guide rail assembly 5. The cleaning assembly 6 includes a slide plate 61 and a nozzle 63. The slide plate 61 is slidably connected to the guide rail assembly 5, and the drive assembly 4 is drively connected to the slide plate 61. The nozzle 63 is mounted on the slide plate 61. This invention uses the drive assembly 4 to drive the cleaning assembly 6 to move up and down along the guide rail assembly 5 for cleaning, resulting in higher cleaning efficiency.

[0037] In use, nozzle 63 is connected to a compressed air source via a hose, allowing dust to be blown away and cleaned from the outer circumferential wall of the rotor or the inner circumferential wall of the stator. Nozzle 63 can also be connected to a dry ice cleaner via a hose, spraying liquid dry ice to clean dirt from the outer circumferential wall of the rotor or the inner circumferential wall of the stator.

[0038] In this embodiment, nozzle 63 can be a W wide-angle fan nozzle from Dongguan Changyuan Spray Technology Co., Ltd.

[0039] Example 2:

[0040] Based on Example 1, see Figure 4 , 5 The cleaning assembly 6 also includes a rotating tube 62 and a first driver 67. The rotating tube 62 is rotatably mounted on the slide plate 61. A nozzle 63 is installed at one end of the rotating tube 62, and the other end is used to connect to the cleaning pipe 66. A first transmission member 64 is fixedly installed on the outer wall of the rotating tube 62. The first driver 67 is mounted on the slide plate 61, and a second transmission member 68 is installed on the output shaft of the first driver 67. The first transmission member 64 and the second transmission member 68 are connected in a transmission manner. Through the above structure, the nozzle 63 is driven to swing left and right, thereby expanding the working area of ​​the nozzle 63 and further improving efficiency.

[0041] When using, please refer to Figure 4 , 5 The first driver 67 drives the second transmission component 68 to rotate back and forth, thereby driving the first transmission component 64 to rotate, which in turn drives the rotating tube 62 to rotate back and forth, thereby driving the nozzle 63 to swing back and forth.

[0042] In one embodiment, both the first transmission component 64 and the second transmission component 68 are gears, and the first transmission component 64 and the second transmission component 68 mesh with each other for transmission.

[0043] In another embodiment, both the first transmission component 64 and the second transmission component 68 are pulleys, and are connected by a belt 69. Specifically, the pulleys are synchronous pulleys, and the belt 69 is a synchronous belt.

[0044] In this embodiment, see Figure 4 , 5 The nozzle 63 includes an extension tube 631, and a bend tube 632 is provided at the lower end of the extension tube 631. The central axis of the bend tube 632 is offset from the central axis of the extension tube 631, and the upper end of the extension tube 631 is connected to the rotating tube 62. The extension tube 631 is bent at a certain angle to clean the inner circumferential wall of the stator or the outer circumferential wall of the rotor.

[0045] Furthermore, the upper end of the extension tube 631 is provided with a flange 633, and a nut cap 634 is also installed on the extension tube 631 outside the flange 633. The nut cap 634 is screwed and fixed to the rotating tube 62, and the flange 633 abuts against the end of the rotating tube 62. The lower end of the rotating tube 62 is provided with an external thread, and the nut cap 634 is screwed and fixed to the rotating tube 62 to facilitate the connection between the nozzle 63 and the rotating tube 62.

[0046] In this embodiment, see Figure 5 The slide plate 61 is provided with mounting holes 611, and bearings 612 are installed at both the upper and lower ends of the mounting holes 611. The rotating tube 62 passes through the mounting holes 611 and the inner holes of the bearings 612 to achieve a rotatable connection between the rotating tube 62 and the slide plate 61.

[0047] In this embodiment, the first driver 67 is a servo or stepper motor.

[0048] Example 3:

[0049] Based on Example 2, see Figure 4 , 5 A rotary joint 65 is installed at one end of the rotating tube 62 that connects to the cleaning pipe 66, and the cleaning pipe 66 is connected to the rotary joint 65. By installing the rotary joint 65, the rotating tube 62 can rotate continuously without reciprocating, thus cleaning both the outer circumferential wall of the rotor and the inner circumferential wall of the stator simultaneously.

[0050] The rotary joint 65 uses existing technology and can be purchased directly from the market.

[0051] Example 4:

[0052] Based on Example 2 or 3, see Figure 4 The slide plate 61 has rotating tubes 62 installed on both sides of the first driver 67 to improve cleaning efficiency.

[0053] Furthermore, the cleaning pipe 66 includes a branch pipe 661, a tee pipe 662, and a main pipe 663. One port on the upper side of the tee pipe 662 is connected to the main pipe 663, and the two ports on the lower side of the tee pipe 662 are respectively connected to the branch pipe 661. The branch pipe 661 is connected to the rotary joint 65.

[0054] Example 5:

[0055] Based on Example 1, 2, 3, or 4, see [link to example]. Figure 2 , 3 The guide rail assembly 5 includes an upper bracket 51, a lower bracket 53, and linear guide rails 52. The two ends of the two linear guide rails 52 are fixedly installed on the upper bracket 51 and the lower bracket 53, respectively. Slider 54 is slidably installed on the linear guide rails 52, and the two ends of the slide plate 61 are respectively installed on the slider 54 of the linear guide rails 52 on both sides.

[0056] A limiting seat 56 is also installed on the upper bracket 51. In use, the guide rail assembly 5 can be hung on the top of the narrow gap 2 via the limiting seat 56.

[0057] Example 6:

[0058] Based on Example 5, see Figure 3 , 6 The drive assembly 4 includes a mounting base 41, a second driver 42, a drive wheel 43, a transmission belt 44, and a driven wheel 45. The mounting base 41 is mounted on one side of the upper bracket 51. The second driver 42 is mounted on the mounting base 41. The drive wheel 43 is mounted on the output shaft of the second driver 42. The driven wheel 45 is rotatably mounted on the lower bracket 53 or on the linear guide rail 52 located on one side of the second driver 42 via a support 46. The transmission belt 44 is fitted onto the drive wheel 43 and the driven wheel 45. The slide plate 61 is located on one side of the transmission belt 44. Alternatively, a pressure plate 55 is mounted on the slider 54 located on one side of the transmission belt 44. The transmission belt 44 passes through the pressure plate 55, connecting and fixing the transmission belt 44 to the slide plate 61 or the slider 54.

[0059] The second driver 42 drives the drive wheel 43 to rotate in both directions, and the drive wheel 43 drives the transmission belt 44 to rotate in both directions. Since the transmission belt 44 is fixed to the slide plate 61 or the slider 54 through the pressure plate 55, it can drive the cleaning component 6 to move up and down.

[0060] In this embodiment, the first driver 67 is a servo or stepper motor.

[0061] The working principle or process of this utility model:

[0062] When using, please refer to Figure 1 , 2 The guide rail assembly 5 is placed in the narrow gap 2 between the stator 1 and the rotor 3. Since the limiting seat 56 is much wider than the narrow gap 2, the guide rail assembly 5 can be suspended and installed through the limiting seat 56.

[0063] The second driver 42 drives the drive wheel 43 to rotate in both directions, and the drive wheel 43 drives the transmission belt 44 to rotate in both directions. Since the transmission belt 44 is fixed to the slide plate 61 or the slider 54 through the pressure plate 55, it can drive the cleaning component 6 to move up and down.

[0064] The dry pipe 663 on the cleaning pipe 66 is connected to a flexible hose, which is connected to a compressed air source. At this time, the dust on the outer circumferential wall of the rotor or the inner circumferential wall of the stator can be blown away and cleaned through the nozzle 63. Alternatively, the flexible hose can be connected to a dry ice cleaning machine, and liquid dry ice can be sprayed out through the nozzle 63 to clean the dirt on the outer circumferential wall of the rotor or the inner circumferential wall of the stator.

[0065] During cleaning, the nozzle 63 is driven by the first driver 67 to swing left and right or rotate in a circle, thereby expanding the working area of ​​the nozzle 63 and simultaneously cleaning the dirt on the outer circumferential wall of the rotor and the inner circumferential wall of the stator, further improving efficiency.

[0066] After the cleaning component 6 moves up and down several times, it moves the guide rail component 5 a certain distance around the narrow gap 2 to clean the next section.

[0067] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A generator set stator and rotor narrow gap cleaning device, characterized in that: The device includes a drive assembly (4), a guide rail assembly (5), and a cleaning assembly (6). The cleaning assembly (6) is slidably mounted on the guide rail assembly (5). The drive assembly (4) is mounted on the guide rail assembly (5) and is connected to the cleaning assembly (6) in a transmission manner to drive the cleaning assembly (6) to move up and down along the guide rail assembly (5). The cleaning assembly (6) includes a slide plate (61) and a nozzle (63). The slide plate (61) is slidably connected to the guide rail assembly (5), the drive assembly (4) is connected to the slide plate (61) in a transmission manner, and the nozzle (63) is mounted on the slide plate (61).

2. The generator set stator and rotor narrow gap cleaning device according to claim 1, characterized in that: The cleaning assembly (6) further includes a rotating tube (62) and a first driver (67). The rotating tube (62) is rotatably mounted on the slide plate (61). A nozzle (63) is mounted on one end of the rotating tube (62), and the other end is used to connect to the cleaning pipe (66). A first transmission member (64) is mounted on the outer wall of the rotating tube (62). The first driver (67) is mounted on the slide plate (61). A second transmission member (68) is mounted on the output shaft of the first driver (67). The first transmission member (64) and the second transmission member (68) are connected in a transmission manner.

3. The generator set stator and rotor narrow gap cleaning device according to claim 2, characterized in that: The slide plate (61) is provided with a mounting hole (611), and a bearing (612) is installed in the mounting hole (611). The rotating tube (62) passes through the mounting hole (611) and the inner hole of the bearing (612).

4. A generator set stator and rotor narrow gap cleaning device according to claim 2, characterized in that: The nozzle (63) includes an extension tube (631), and a bend tube (632) is provided at the lower end of the extension tube (631). The central axis of the bend tube (632) is offset from the central axis of the extension tube (631), and the upper end of the extension tube (631) is connected to the rotating tube (62).

5. A generator set stator and rotor narrow gap cleaning device according to claim 4, characterized in that: The upper end of the extension tube (631) is provided with a flange (633), and a nut cap (634) is also installed on the outside of the flange (633) of the extension tube (631). The nut cap (634) is screwed and fixed to the rotating tube (62), and the flange (633) abuts against the end of the rotating tube (62).

6. A generator set stator and rotor narrow gap cleaning device according to claim 2, characterized in that: The first transmission component (64) and the second transmission component (68) are both gears, and the first transmission component (64) and the second transmission component (68) mesh and transmit power. Alternatively, both the first transmission component (64) and the second transmission component (68) are pulleys, and the first transmission component (64) and the second transmission component (68) are connected by a belt (69).

7. A generator set stator and rotor narrow gap cleaning device according to claim 2, characterized in that: A rotary joint (65) is installed at one end of the rotating tube (62) that is connected to the cleaning pipe (66), and the cleaning pipe (66) is connected to the rotary joint (65).

8. A generator set stator and rotor narrow gap cleaning device according to claim 7, characterized in that: The slide plate (61) has rotating tubes (62) installed on both sides of the first driver (67). The cleaning pipe (66) includes a branch pipe (661), a tee pipe (662) and a main pipe (663). One port on the upper side of the tee pipe (662) is connected to the main pipe (663), and the two ports on the lower side of the tee pipe (662) are connected to the branch pipe (661) respectively. The branch pipe (661) is connected to the rotary joint (65).

9. A generator set stator and rotor narrow gap cleaning device according to any one of claims 1 to 8, characterized in that: The guide rail assembly (5) includes an upper bracket (51), a lower bracket (53), and linear guide rails (52). The two ends of the two linear guide rails (52) are fixedly installed on the upper bracket (51) and the lower bracket (53), respectively. A slider (54) is slidably installed on the linear guide rail (52). The two ends of the slide plate (61) are respectively installed on the sliders (54) of the two linear guide rails (52). A limit seat (56) is also installed on the upper bracket (51).

10. A generator set stator and rotor narrow gap cleaning device according to claim 9, characterized in that: The drive assembly (4) includes a mounting base (41), a second driver (42), a drive wheel (43), a transmission belt (44), and a driven wheel (45). The mounting base (41) is mounted on one side of the upper bracket (51). The second driver (42) is mounted on the mounting base (41). The drive wheel (43) is mounted on the output shaft of the second driver (42). The driven wheel (45) is rotatably mounted on the lower bracket (53) or on the linear guide rail (52) located on one side of the second driver (42) via a support (46). The transmission belt (44) is fitted onto the drive wheel (43) and the driven wheel (45). The slide plate (61) is located on one side of the transmission belt (44). Alternatively, a pressure plate (55) is mounted on the slider (54) located on one side of the transmission belt (44). The transmission belt (44) passes through the pressure plate (55) to connect and fix the transmission belt (44) to the slide plate (61) or the slider (54).

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