Steam turbine rotor blade cleaning device

Abstract

The utility model discloses a cleaning device for rotor blades of a steam turbine. Comprising a sweeping mechanism used for sweeping blades, a swing driving mechanism used for driving the sweeping mechanism to swing, a longitudinal driving mechanism used for driving the sweeping mechanism to get close to or get away from the blades, and a vertical driving mechanism used for driving the sweeping mechanism to move vertically. The sweeping mechanism comprises a brush and a rotation driving mechanism used for driving the brush to rotate. The plane where the swing driving mechanism drives the sweeping mechanism to swing is perpendicular to the driving direction of the longitudinal driving mechanism. The cleaning device can automatically clean the rotor blades of the steam turbine and has high working efficiency.

Description

Technical Field

[0001] This utility model relates to a cleaning device, specifically a steam turbine rotor blade cleaning device. Background Technology

[0002] A steam turbine is a rotating machine that uses steam as its power source and converts the heat energy of steam into mechanical work. It is the most widely used prime mover in modern thermal power plants. The blades are key components of a steam turbine, and also among its most delicate and important parts.

[0003] Because steam contains a large number of impurities, a lot of scale will be generated on the turbine blades during operation. Scale buildup on the blades will affect the efficiency of the turbine. Therefore, the impeller blades of turbine units that have been running for a long time need to be cleaned regularly.

[0004] Existing turbine blades are generally cleaned by water jetting, which is done manually, time-consuming, labor-intensive, and has a low degree of automation. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide a steam turbine rotor blade cleaning device that can automatically clean the steam turbine rotor blades and has high working efficiency.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A steam turbine rotor blade cleaning device includes a cleaning mechanism for cleaning the blades, a swing drive mechanism for driving the cleaning mechanism to swing, a longitudinal drive mechanism for driving the cleaning mechanism to move closer to or away from the blades, and a vertical drive mechanism for driving the cleaning mechanism to move vertically.

[0008] The cleaning mechanism includes a brush and a rotation drive mechanism for driving the brush to rotate.

[0009] The plane in which the swinging drive mechanism drives the cleaning mechanism to swing is perpendicular to the driving direction of the longitudinal drive mechanism.

[0010] The working principle of the above-mentioned steam turbine rotor blade cleaning device is as follows:

[0011] During operation, a longitudinal drive mechanism propels the cleaning mechanism closer to the blade, moving the brush to the cleaning starting point. A rotation drive mechanism then drives the brush to rotate, initiating cleaning of the blade surface. Simultaneously, the combined longitudinal and vertical drive mechanisms move the brush both longitudinally and vertically, gradually cleaning the entire blade surface. Furthermore, the blade has a spirally extending structure; as the brush rotates and wipes, a oscillating drive mechanism drives the brush to oscillate in a contour-following manner, allowing the brush to adaptively match the blade's shape and ensure thorough cleaning, effectively removing dirt.

[0012] In a preferred embodiment of this utility model, the self-rotation drive mechanism includes a self-rotation mounting base and a self-rotation drive motor, wherein the self-rotation drive motor is fixedly mounted on the self-rotation mounting base and is connected to the brush.

[0013] Furthermore, the self-rotation drive mechanism also includes a self-rotation transmission assembly, which includes a self-rotation driving gear and a self-rotation driven gear. The self-rotation driving gear is connected to the self-rotation drive motor. There are two brushes and two self-rotation driven gears. One brush is directly connected to the self-rotation drive motor, and the other brush is connected to one of the self-rotation driven gears.

[0014] With the above structure, the two brushes can rotate under the drive of the self-rotating motor, thereby cleaning the blades.

[0015] In a preferred embodiment of this invention, the oscillating drive mechanism includes an oscillating drive motor and an oscillating transmission assembly. The oscillating drive motor is mounted on a rotating mounting base. The oscillating transmission assembly includes an oscillating shaft, an oscillating drive gear, and an oscillating driven gear. One end of the oscillating shaft is rotatably connected to the rotating mounting base, and the other end is fixedly connected to a longitudinal drive mechanism. The oscillating drive gear is connected to the oscillating drive motor, and the oscillating driven gear is fixedly connected to the oscillating shaft. With this structure, driven by the oscillating drive motor, the oscillating shaft and the oscillating driven gear remain stationary, while the oscillating drive gear drives the rotating mounting base to oscillate, thereby cooperating with the helically extending blades.

[0016] In a preferred embodiment of this utility model, the vertical drive mechanism includes a vertical mounting base, a vertical drive motor, and a vertical transmission assembly. The vertical transmission assembly includes a vertical transmission seat, a vertical transmission gear, and a vertical transmission rack. The vertical transmission seat is connected to the vertical mounting base via a vertical sliding structure, and the vertical drive mechanism is mounted on the vertical transmission seat. The vertical drive motor is mounted on the vertical transmission seat, the vertical transmission gear is connected to the vertical drive motor, and the vertical transmission rack is fixedly connected to the vertical mounting base. With this structure, driven by the vertical drive motor, the cleaning mechanism can move vertically, thereby cleaning the surface of the blades vertically.

[0017] Furthermore, the longitudinal drive mechanism includes a longitudinal drive motor and a longitudinal transmission assembly. The longitudinal transmission assembly includes a longitudinal transmission gear and a longitudinal transmission rack. The longitudinal drive motor is mounted on a vertical transmission base, the longitudinal transmission gear is connected to the longitudinal drive motor, and the longitudinal transmission rack is connected to the vertical transmission base via a longitudinal sliding structure. This longitudinal transmission rack is connected to the swing drive mechanism. With this structure, driven by the longitudinal drive motor, the cleaning mechanism can move longitudinally, thereby cleaning the surface of the blades longitudinally.

[0018] In a preferred embodiment of this invention, a lateral traveling mechanism is further included. This lateral traveling mechanism comprises a lateral guide rail and a lateral traveling chassis. The extension direction of the lateral guide rail is parallel to the axis of the blades. The vertical drive mechanism and the longitudinal drive mechanism are disposed on the lateral traveling chassis, which has a lateral traveling structure that cooperates with the lateral guide rail. Through this structure, the cleaning mechanism can be driven to move laterally, thereby cleaning the blades at different positions on the rotor.

[0019] In a preferred embodiment of this utility model, the rotor is placed on a support device, which has the function of driving the rotor to rotate so as to rotate the uncleaned parts to the front of the cleaning mechanism.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The cleaning device of this utility model can automatically clean the rotor blades of a steam turbine and has high working efficiency.

[0022] 2. When the brush is rotating and wiping, the brush is driven to swing in a contour-following manner by the swing drive mechanism, so that the brush adapts to the shape of the blade and ensures that the brush can effectively clean the blade and remove dirt. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of the steam turbine rotor blade cleaning device of this utility model in the working state.

[0024] Figures 2-3 These are three-dimensional structural diagrams of the steam turbine rotor blade cleaning device of this utility model from two different perspectives.

[0025] Figure 4 for Figure 2 A magnified view of X in the image.

[0026] Figure 5 for Figure 2 A magnified view of the Y-axis. Detailed Implementation

[0027] To enable those skilled in the art to fully understand the technical solution of this utility model, the present utility model will be further described below in conjunction with the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0028] The steam turbine rotor blade cleaning device of this embodiment includes a lateral traveling mechanism, a cleaning mechanism for cleaning the blades, a swing driving mechanism for driving the cleaning mechanism to swing, a longitudinal driving mechanism for driving the cleaning mechanism to move closer to or away from the blades, and a vertical driving mechanism for driving the cleaning mechanism to move vertically.

[0029] Combination Figure 1 The lateral travel mechanism includes a lateral guide rail 1 and a lateral travel chassis 2. The extension direction of the lateral guide rail 1 is parallel to the axis of the blade. The vertical drive mechanism and the longitudinal drive mechanism are mounted on the lateral travel chassis 2, which has a lateral travel structure that cooperates with the lateral guide rail 1. Through this structure, the cleaning mechanism can be driven to move laterally, thereby cleaning the blades at different positions on the rotor.

[0030] Combination Figures 2-5 The cleaning mechanism includes a brush 3 and a rotation drive mechanism for driving the brush 3 to rotate; wherein, the rotation drive mechanism includes a rotation mounting base 4 and a rotation drive motor 5, the rotation drive motor 5 is fixedly mounted on the rotation mounting base 4, and the rotation drive motor 5 is connected to the brush 3.

[0031] Furthermore, the self-rotation drive mechanism also includes a self-rotation transmission assembly, which includes a self-rotation driving gear 6 and a self-rotation driven gear 7. The self-rotation driving gear 6 is connected to the self-rotation drive motor 5. There are two brushes 3 and two self-rotation driven gears 7. One brush 3 is directly connected to the self-rotation drive motor 5, and the other brush 3 is connected to one of the self-rotation driven gears 7.

[0032] With the above structure, the two brushes 3 can rotate under the drive of the self-rotating motor 5, thereby cleaning the blades.

[0033] Combination Figures 2-5 The plane in which the oscillating drive mechanism drives the cleaning mechanism to oscillate is perpendicular to the driving direction of the longitudinal drive mechanism. The oscillating drive mechanism includes an oscillating drive motor 8 and an oscillating transmission assembly. The oscillating drive motor 8 is mounted on the self-rotating mounting base 4. The oscillating transmission assembly includes an oscillating shaft 9, an oscillating drive gear 10, and an oscillating driven gear 11. One end of the oscillating shaft 9 is rotatably connected to the self-rotating mounting base 4, and the other end is fixedly connected to the longitudinal drive mechanism. The oscillating drive gear 10 is connected to the oscillating drive motor 8, and the oscillating driven gear 11 is fixedly connected to the oscillating shaft 9. With this structure, driven by the oscillating drive motor 8, the oscillating shaft 9 and the oscillating driven gear 11 remain stationary, while the oscillating drive gear 10 drives the self-rotating mounting base 4 to oscillate, thereby cooperating with the spirally extending blades.

[0034] Combination Figures 2-5 The vertical drive mechanism includes a vertical mounting base 12, a vertical drive motor 13, and a vertical transmission assembly. The vertical transmission assembly includes a vertical transmission seat 14, a vertical transmission gear, and a vertical transmission rack 15. The vertical transmission seat 14 is connected to the vertical mounting base 12 via a vertical sliding structure, and the vertical drive mechanism is mounted on the vertical transmission seat 14. The vertical drive motor 13 is mounted on the vertical transmission seat 14, the vertical transmission gear is connected to the vertical drive motor 13, and the vertical transmission rack 15 is fixedly connected to the vertical mounting base 12. With this structure, driven by the vertical drive motor 13, the cleaning mechanism can move vertically, thereby cleaning the surface of the blades vertically.

[0035] Combination Figures 2-5 The longitudinal drive mechanism includes a longitudinal drive motor 16 and a longitudinal transmission assembly. The longitudinal transmission assembly includes a longitudinal transmission gear 17 and a longitudinal transmission rack 18. The longitudinal drive motor 16 is mounted on a vertical transmission base 14, and the longitudinal transmission gear 17 is connected to the longitudinal drive motor 16. The longitudinal transmission rack 18 is connected to the vertical transmission base 14 via a longitudinal sliding structure and is connected to a swing drive mechanism. With this structure, driven by the longitudinal drive motor 16, the cleaning mechanism can move longitudinally, thereby cleaning the surface of the blades longitudinally.

[0036] Specifically, the rotor is placed on a support device that has the function of driving the rotor to rotate so as to rotate the uncleaned parts to the front of the cleaning mechanism. The specific structure of the support device can be referred to the prior art.

[0037] Combination Figures 2-5 The working principle of the above-mentioned steam turbine rotor blade cleaning device is as follows:

[0038] During operation, the longitudinal drive mechanism propels the cleaning mechanism closer to the blade, moving the brush 3 to the cleaning starting point of the blade. A rotation drive mechanism then drives the brush 3 to rotate, initiating the cleaning of the blade surface. Simultaneously, the combined longitudinal and vertical drive mechanisms cause the brush 3 to move longitudinally and vertically, gradually cleaning the entire surface of the blade. Furthermore, the blade has a spirally extending structure; while the brush 3 rotates and wipes, a oscillating drive mechanism drives the brush 3 to oscillate in a contour-following manner, allowing the brush 3 to adaptively conform to the shape of the blade, ensuring that the brush 3 can effectively clean the blade and remove dirt.

[0039] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A steam turbine rotor blade cleaning device, characterized in that, It includes a cleaning mechanism for cleaning the blades, a swing drive mechanism for driving the cleaning mechanism to swing, a longitudinal drive mechanism for driving the cleaning mechanism to move closer to or away from the blades, and a vertical drive mechanism for driving the cleaning mechanism to move vertically. The cleaning mechanism includes a brush and a rotation drive mechanism for driving the brush to rotate. The plane in which the swinging drive mechanism drives the cleaning mechanism to swing is perpendicular to the driving direction of the longitudinal drive mechanism.

2. The steam turbine rotor blade cleaning device according to claim 1, characterized in that, The self-rotation drive mechanism includes a self-rotation mounting base and a self-rotation drive motor. The self-rotation drive motor is fixedly mounted on the self-rotation mounting base and is connected to the brush.

3. The steam turbine rotor blade cleaning device according to claim 2, characterized in that, The self-rotation drive mechanism also includes a self-rotation transmission assembly, which includes a self-rotation driving gear and a self-rotation driven gear. The self-rotation driving gear is connected to the self-rotation drive motor. There are two brushes and two self-rotation driven gears. One brush is directly connected to the self-rotation drive motor, and the other brush is connected to one of the self-rotation driven gears.

4. The steam turbine rotor blade cleaning device according to claim 2, characterized in that, The swing drive mechanism includes a swing drive motor and a swing transmission assembly. The swing drive motor is mounted on a self-rotating mounting base. The swing transmission assembly includes a swing shaft, a swing drive gear, and a swing driven gear. One end of the swing shaft is rotatably connected to the self-rotating mounting base, and the other end of the swing shaft is fixedly connected to a longitudinal drive mechanism. The swing drive gear is connected to the swing drive motor, and the swing driven gear is fixedly connected to the swing shaft.

5. The steam turbine rotor blade cleaning device according to claim 1, characterized in that, The vertical drive mechanism includes a vertical mounting base, a vertical drive motor, and a vertical transmission assembly. The vertical transmission assembly includes a vertical transmission seat, a vertical transmission gear, and a vertical transmission rack. The vertical transmission seat is connected to the vertical mounting base via a vertical sliding structure. The vertical drive mechanism is mounted on the vertical transmission seat. The vertical drive motor is mounted on the vertical transmission seat. The vertical transmission gear is connected to the vertical drive motor. The vertical transmission rack is fixedly connected to the vertical mounting base.

6. The steam turbine rotor blade cleaning device according to claim 5, characterized in that, The longitudinal drive mechanism includes a longitudinal drive motor and a longitudinal transmission assembly. The longitudinal transmission assembly includes a longitudinal transmission gear and a longitudinal transmission rack. The longitudinal drive motor is mounted on a vertical transmission base. The longitudinal transmission gear is connected to the longitudinal drive motor. The longitudinal transmission rack is connected to the vertical transmission base through a longitudinal sliding structure and is connected to the swing drive mechanism.

7. The steam turbine rotor blade cleaning device according to claim 1, characterized in that, It also includes a lateral travel mechanism, which includes a lateral guide rail and a lateral travel chassis. The extension direction of the lateral guide rail is parallel to the axis of the blade. The vertical drive mechanism and the longitudinal drive mechanism are disposed on the lateral travel chassis. The lateral travel chassis is provided with a lateral travel structure that cooperates with the lateral guide rail.

8. The steam turbine rotor blade cleaning device according to claim 1, characterized in that, The rotor is placed on a support device, which is equipped with a mechanism for driving the rotor to rotate.

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