Hydraulic turbine generator rotor maintenance equipment and use method thereof

Abstract

The invention discloses hydraulic turbine generator rotor maintenance equipment and a using method thereof.The hydraulic turbine generator rotor maintenance equipment comprises a rotating base, a rotating beam, a maintenance platform, an outer circle measuring rod, a measuring device and a lifting device, the rotating beam is rotationally installed on the rotating base, and the maintenance platform and the outer circle measuring rod are installed on the lower sides of the two ends of the rotating beam respectively; the measuring device is installed on the outer circle measuring rod, and the lifting device is installed on the rotating beam. The maintenance platform is used for checking and maintaining the outer wall of the generator rotor, the measuring device is used for measuring the outer circle of the generator rotor when the outer circle measuring rod rotates, and the lifting device is used for loading workers to enter a rotor center body. While the outer circumference of the generator rotor is inspected and overhauled, the problem of conveniently entering the interior of the rotor center body is solved, and the problem of measuring the roundness of the outer circumference of the generator rotor is also solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic turbine generator rotor maintenance, and in particular to hydraulic turbine generator rotor maintenance equipment and a use method thereof. Background Art

[0002] When the hydro-turbine generator set is overhauled, the generator rotor needs to be hoisted out for inspection and maintenance. At present, when inspecting and repairing the generator rotor, the outer circumference of the generator rotor is carried out by the staff standing on the scaffolding. After inspecting and repairing the structure at one place, the scaffolding is moved. When the scaffolding is moved, at least two people are required to push the scaffolding. In addition, in order to prevent the scaffolding from overturning, the staff on the scaffolding are required to go down to the ground. This reciprocating operation has low operating efficiency. In addition, when it is necessary to go down to the inside of the rotor center body, either climb in from the bottom of the motor rotor or move a ladder to enter from the passage on the rotor center body. Since the internal space is not interconnected, the staff also needs to climb in and out repeatedly, which is extremely inconvenient and has low operating efficiency. In addition, when the generator rotor is overhauled, the roundness of the outer circumference of the generator rotor needs to be measured, and there is currently no suitable equipment for measurement.

[0003] Although Chinese patent document CN116581940A, published (announcement) date: 2023.08.11, discloses an automatic walking maintenance device and maintenance method for the inner bore of a large hydro-turbine generator stator, the device includes a circular track, a walking trolley is installed on the circular track, the walking trolley is fixedly connected to the lifting track and the counterweight frame, the counterweight frame is detachably connected to multiple counterweight blocks, and the lifting track is connected to a lifting work basket, wherein the counterweight frame is located on the outside of the circular track, and the lifting work basket is located on the inside of the circular track. Its characteristics are: the use of this device can effectively reduce the amount of construction and dismantling of the maintenance platform, shorten the stator maintenance cycle, and reduce the safety risk of high-altitude operations; its shortcomings are: the device and method are for maintenance of the inner bore of the hydro-turbine generator stator, and cannot solve the problem of how to conveniently enter the rotor center body when the generator rotor is repaired, and the problem of measuring the roundness of the outer circumference of the generator rotor. Summary of the invention

[0004] The purpose of the present invention is to provide a turbine generator rotor maintenance device and a method for using the same, wherein the outer wall of the generator rotor is inspected and maintained by a maintenance platform, the outer circle of the generator rotor is measured by a measuring device when an outer circle measuring rod rotates, and a lifting device is used to load workers into the rotor center body, thereby solving the problem of conveniently entering the rotor center body and measuring the roundness of the outer circumference of the generator rotor.

[0005] To achieve the above-mentioned purpose, the present invention provides a turbine generator rotor maintenance equipment, including a rotating seat, a rotating beam, a maintenance platform, an outer circle measuring rod, a measuring device and a lifting device, wherein the rotating beam is rotatably installed on the rotating seat, the maintenance platform and the outer circle measuring rod are respectively installed on the lower sides of both ends of the rotating beam, the measuring device is installed on the outer circle measuring rod, and the lifting device is installed on the rotating beam; the maintenance platform is used to inspect and repair the outer wall of the generator rotor, the measuring device is used to measure the outer circle of the generator rotor when the outer circle measuring rod rotates, and the lifting device is used to carry the staff to enter the rotor center body.

[0006] The rotating seat comprises a base plate, a fixed seat, a support plate and a rotating column. The fixed seat is installed on the base plate. A plurality of support plates are fixedly connected to the outside of the fixed seat. The rotating column is rotatably connected to the fixed seat, and the rotating beam is fixedly connected to the rotating column.

[0007] A driver is installed on the fixing seat, the driver is in transmission connection with the rotating column, and the rotating column is rotated by the driving of the driver.

[0008] The maintenance platform is connected to the rotating beam through an adjustment device.

[0009] The maintenance platform is surrounded by fences, and connecting rods extending upward are installed on both sides of the fence; the adjustment device includes a sliding sleeve frame and a first push rod, the lower ends of the two connecting rods are respectively connected and fixed to the maintenance platform, and the upper ends are respectively slidably inserted into the sliding sleeve frame, one end of the first push rod is connected to the sliding sleeve frame, and the other end is connected to the connecting rod.

[0010] The adjustment device also includes a first slide and a second push rod. The first slide is slidably connected with the rotating beam. One end of the second push rod is connected to the rotating beam and the other end is connected to the first slide. The sliding sleeve frame is connected to the first slide.

[0011] The maintenance platform is provided with supporting wheels on the side close to the generator rotor.

[0012] A second slide is installed on the outer circle measuring rod, and the second slide is slidably connected with the rotating beam. One end of the third push rod is connected with the rotating beam, and the other end is connected with the second slide.

[0013] The lifting device includes a fixed sleeve, a telescopic rod, a loading platform and a fourth push rod. The fixed sleeve is installed and connected to the rotating beam. The telescopic rod is slidably and directionally telescopically connected to the fixed sleeve. The loading platform is installed on the telescopic rod. One end of the fourth push rod is connected to the fixed sleeve, and the other end is connected to the telescopic rod.

[0014] The method for using the turbine generator rotor maintenance equipment comprises the following steps: S1. Lift the generator rotor out of the generator set and place it on the base; S2. Hoist the rotating beam together with the rotating seat, align the rotating seat with the center hole of the rotor center body, and connect and fix it to the rotor center body; S3. Install an inspection platform and an outer circle measuring rod at both ends of the rotating beam; S4. During maintenance, the staff enters the maintenance platform to inspect and repair the outer wall of the generator rotor. The rotating beam rotates through the rotating seat to adjust the inspection and maintenance position; When it is necessary to enter the rotor center body for operation, the worker descends through the lifting device and passes through the passage on the rotor center body to enter the rotor center body; When it is necessary to measure the roundness of the outer circumference of the generator rotor, a measuring device is installed on the outer circle measuring rod, the rotating beam rotates one circle, and the roundness of the outer circumference of the generator rotor is measured by the measuring device.

[0015] Compared with the prior art, the present invention has the following technical effects: 1. The rotating seat of the present invention is used to be installed on the center hole of the rotor center body of the generator rotor. The rotating seat determines the center position through the center hole on the rotor center body. The rotating beam is welded on the rotating seat, and the rotating beam can rotate 360 ​​degrees through the rotating seat. The maintenance platform is used to inspect and repair the outer wall of the generator rotor, the measuring device is used to measure the outer circle of the generator rotor when the outer circle measuring rod rotates, and the lifting device is used to load the staff to enter the inside of the rotor center body. While solving the problem of inspecting and repairing the outer circumference of the generator rotor, it also solves the problem of convenient entry into the rotor center body and the problem of measuring the roundness of the outer circumference of the generator rotor.

[0016] 2. The adjustment device of the present invention is driven by the first push rod, thereby moving up and down to adjust the height of the maintenance platform, which is suitable for the scene with a high height of the generator rotor.

[0017] 3. The adjustment device of the present invention pushes and pulls the first slide seat by pushing and pulling the second push rod, thereby adjusting the distance between the maintenance platform and the outer wall of the generator rotor.

[0018] 4. When inspecting the outer wall of the generator rotor, the present invention adjusts the position of the inspection platform through the second push rod so that the support wheel abuts against the outer wall of the generator rotor, thereby improving the stability of the inspection platform during lifting and lowering, and preventing the inspection platform from shaking and hitting the outer wall of the generator rotor. When the rotating beam rotates, the second push rod pushes the first slide seat out to keep the support wheel away from the outer wall of the generator rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description: Figure 1 A state diagram when used for the present invention; Figure 2 It is a side view schematic diagram of the structure of the present invention when in use; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of the main structure of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the maintenance platform of the present invention.

[0020] Reference numerals: Generator rotor 10, yoke 11, rotor center body 12, channel 13, base 14; Turbine generator rotor maintenance equipment 20; Rotating seat 21, bottom plate 211, fixed seat 212, supporting plate 213, rotating column 214, driver 215; Rotating beam 22, truss 221; Maintenance platform 23, fence 231, connecting rod 232, support wheel 233, ladder 234; External circle measuring rod 24, second slide seat 241, third push rod 242; Measuring device 25; Lifting device 26, fixing sleeve 261, telescopic rod 262, loading platform 263, fourth push rod 264; Pedal 27; Adjusting device 28 , sliding sleeve frame 281 , first push rod 282 , first sliding seat 283 , second push rod 284 . DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0022] Embodiment 1: See also Figure 1-5 A turbine generator rotor maintenance equipment comprises a rotating seat 21, a rotating beam 22, a maintenance platform 23, an outer circle measuring rod 24, a measuring device 25 and a lifting device 26. The rotating beam 22 is rotatably installed on the rotating seat 21, and the maintenance platform 23 and the outer circle measuring rod 24 are respectively installed on the lower sides of both ends of the rotating beam 22. The measuring device 25 is installed on the outer circle measuring rod 24, and the lifting device 26 is installed on the rotating beam 22; the maintenance platform 23 is used to inspect and repair the outer wall of the generator rotor 10, the measuring device 25 is used to measure the outer circle of the generator rotor 10 when the outer circle measuring rod 24 rotates, and the lifting device 26 is used to carry the staff to enter the rotor center body 12.

[0023] When in use, the rotating seat 21 is used to be installed on the center hole of the rotor center body 12 of the generator rotor 10. The rotating seat 21 determines the center position through the center hole on the rotor center body 12. The rotating beam 22 is welded on the rotating seat 21, and the rotating beam 22 can rotate 360 ​​degrees through the rotating seat 21. The maintenance platform 23 is used to inspect and repair the outer wall of the generator rotor 10. The measuring device 25 is used to measure the outer circle of the generator rotor 10 when the outer circle measuring rod 24 rotates. The lifting device 26 is used to load the staff into the rotor center body 12. While solving the problem of inspecting and repairing the outer circumference of the generator rotor 10, it also solves the problem of conveniently entering the inside of the rotor center body and measuring the roundness of the outer circumference of the generator rotor.

[0024] See also Figure 3 The rotating seat 21 includes a base plate 211, a fixed seat 212, a support plate 213 and a rotating column 214. The fixed seat 212 is installed on the base plate 211. A plurality of support plates 213 are fixedly connected to the outside of the fixed seat 212. The rotating column 214 is rotatably connected to the fixed seat 212, and the rotating beam 22 is fixedly connected to the rotating column 214.

[0025] The bottom plate 211 is used to connect with the rotor center body 12 by bolts, and the support plate 213 is welded with the fixing seat 212 and the bottom plate 211 to improve the stability of the structure, and the support plate 213 also extends out of one end of the bottom plate 211. When installed on the rotor center body 12, the support plate 213 also supports the rotor center body 12, further improving the stability of the rotating seat 21. For details, see Figure 4 A boss that matches with the center hole of the rotor center body 12 is provided at the bottom of the bottom plate 211 , and the boss matches with the center hole of the rotor center body 12 to perform center positioning on the rotating seat 21 .

[0026] In this embodiment, the rotating beam 22 is composed of two sections which are opposite to each other and are welded on the rotating column 214. Furthermore, a truss 221 is welded on the rotating beam 22 to improve the structural strength of the rotating beam 22.

[0027] Further, in Figure 3 In the embodiment, a driver 215 is installed on the fixed seat 212, and the driver 215 is connected to the rotating column 214 by transmission, and the rotating column 214 is rotated by the drive of the driver 215. The driver 215 can be connected to the rotating column 214 by transmission through gear transmission, or can be connected to the rotating column 214 by transmission through a synchronous belt structure, and the rotating column 214 is driven to rotate by the driver 215, thereby driving the rotating beam 22 to rotate. The driver 215 can be a reduction motor or a hydraulic motor.

[0028] See also Figure 3 , 45. The maintenance platform 23 is connected to the rotating beam 22 through an adjustment device 28, which facilitates the adjustment of the height of the maintenance platform 23 and / or the distance between the maintenance platform 23 and the outer wall of the generator rotor 10.

[0029] See also Figure 4 , 5 The inspection platform 23 is surrounded by a fence 231, and connecting rods 232 extending upward are installed on both sides of the fence 231; the adjustment device 28 includes a sliding frame 281 and a first push rod 282, the lower ends of the two connecting rods 232 are respectively connected and fixed to the inspection platform 23, and the upper ends are respectively slidably inserted into the sliding frame 281, and one end of the first push rod 282 is connected to the sliding frame 281, and the other end is connected to the connecting rod 232. The height of the inspection platform 23 is adjusted by the first push rod 282 to move up and down.

[0030] Furthermore, the adjustment device 28 also includes a first slide 283 and a second push rod 284. The first slide 283 is slidably connected with the rotating beam 22. One end of the second push rod 284 is connected to the rotating beam 22, and the other end is connected to the first slide 283. The sliding sleeve frame 281 is connected to the first slide 283. The second push rod 284 is pushed and pulled, thereby pushing and pulling the first slide 283, so as to adjust the distance between the maintenance platform 23 and the outer wall of the generator rotor 10.

[0031] Furthermore, the maintenance platform 23 is provided with a support wheel 233 on the side close to the generator rotor 10. When the outer wall of the generator rotor 10 is being maintained, the position of the maintenance platform 23 is adjusted by the second push rod 284 so that the support wheel 233 abuts against the outer wall of the generator rotor 10, thereby improving the stability of the maintenance platform 23 in lifting and lowering, and preventing the maintenance platform 23 from shaking and hitting the outer wall of the generator rotor 10. When the rotating beam 22 rotates, the second push rod 284 pushes the first slide 283 out so that the support wheel 233 is away from the outer wall of the generator rotor 10.

[0032] Furthermore, in order to facilitate personnel to enter the maintenance platform 23 , a ladder 234 is installed on one or more sides of the maintenance platform 23 .

[0033] See also Figure 4 The outer circle measuring rod 24 is provided with a second slide 241, which is slidably connected with the rotating beam 22. One end of the third push rod 242 is connected with the rotating beam 22, and the other end is connected with the second slide 241. When measurement is required, the third push rod 242 is retracted to make the outer circle measuring rod 24 close to the outer wall of the generator rotor 10, so that the measuring device 25 can measure. When no measurement is performed, the third push rod 242 is extended to make the outer circle measuring rod 24 away from the outer wall of the generator rotor 10.

[0034] In this embodiment, the measuring device 25 may be a micrometer or a laser rangefinder.

[0035] Continue to see Figure 4 The lifting device 26 includes a fixed sleeve 261, a telescopic rod 262, a loading platform 263 and a fourth push rod 264. The fixed sleeve 261 is installed and connected to the rotating beam 22. The telescopic rod 262 is slidably and directionally telescopically connected to the fixed sleeve 261. The loading platform 263 is installed on the telescopic rod 262. One end of the fourth push rod 264 is connected to the fixed sleeve 261, and the other end is connected to the telescopic rod 262. Through the above structure, when the fourth push rod 264 is extended, the loading platform 263 moves down, and when the fourth push rod 264 is retracted, the loading platform 263 moves up. When a person stands on the loading platform 263, the loading platform 263 moves down through the channel 13 on the rotor central body 12 and enters the rotor central body 12.

[0036] When the lifting device 26 is in operation, the loading platform 263 needs to be aligned with the channel 13 on the rotor center body 12 .

[0037] exist Figure 3 In this embodiment, two lifting devices 26 are symmetrically installed, which not only ensures balance but also facilitates personnel to enter the rotor center body 12 more flexibly.

[0038] exist Figure 3 In the figure, a pedal 27 is also installed on the rotating beam 22. During maintenance, the personnel are located on the pedal 27 to facilitate the inspection and maintenance of the top of the yoke 11 of the generator rotor 10.

[0039] Embodiment 2: The method for using the turbine generator rotor maintenance equipment comprises the following steps: S1. The generator rotor 10 is lifted out of the generator set and placed on the base 14. Before placement, the levels of the upper and side surfaces of the base 14 are adjusted to be consistent.

[0040] S2. Hoist the rotating beam 22 together with the rotating seat 21. The rotating seat 21 is aligned with the center hole of the rotor center body 12 and connected and fixed to the rotor center body 12. Specifically, a boss that matches the center hole of the rotor center body 12 is provided at the bottom of the bottom plate 211. The boss matches the center hole of the rotor center body 12 to center the rotating seat 21. The bottom plate 211 is connected to the rotor center body 12 by bolts, and the support plate 213 also supports the rotor center body 12 at the same time.

[0041] S3. Install the inspection platform 23 and the outer circle measuring rod 24 at both ends of the rotating beam 22 respectively.

[0042] S4. During maintenance, the staff enters the maintenance platform 23 to inspect and repair the outer wall of the generator rotor 10. The rotating beam 22 rotates through the rotating seat 21 to adjust the inspection and maintenance position; When it is necessary to enter the rotor center body 12 for operation, the worker descends through the lifting device 26 and passes through the channel 13 on the rotor center body 12 to enter the rotor center body 12. After that, the lifting device 26 is reset to facilitate the rotating beam 22 to continue rotating; When it is necessary to measure the roundness of the outer circumference of the generator rotor 10 , a measuring device 25 is installed on the outer circle measuring rod 24 , and the rotating beam 22 rotates one circle, and the roundness of the outer circumference of the generator rotor 10 is measured by the measuring device 25 .

Claims

1. A turbine generator rotor maintenance equipment, characterized in that: The invention comprises a rotating seat (21), a rotating beam (22), a maintenance platform (23), an outer circle measuring rod (24), a measuring device (25) and a lifting device (26); the rotating beam (22) is rotatably mounted on the rotating seat (21); the maintenance platform (23) and the outer circle measuring rod (24) are respectively mounted on the lower sides of both ends of the rotating beam (22); the measuring device (25) is mounted on the outer circle measuring rod (24); and the lifting device (26) is mounted on the rotating beam (22); the maintenance platform (23) is used to inspect and repair the outer wall of the generator rotor (10); the measuring device (25) is used to measure the outer circle of the generator rotor (10) when the outer circle measuring rod (24) rotates; and the lifting device (26) is used to carry a worker to enter the interior of the rotor center body (12).

2. The hydro turbine generator rotor maintenance equipment according to claim 1, characterized in that: The rotating seat (21) comprises a bottom plate (211), a fixed seat (212), a support plate (213) and a rotating column (214); the fixed seat (212) is mounted on the bottom plate (211); a plurality of support plates (213) are fixedly connected to the outside of the fixed seat (212); the rotating column (214) is rotatably connected to the fixed seat (212); and the rotating beam (22) is fixedly connected to the rotating column (214).

3. The hydro turbine generator rotor maintenance equipment according to claim 2, characterized in that: A driver (215) is mounted on the fixing seat (212), the driver (215) is in transmission connection with the rotating column (214), and the rotating column (214) is driven to rotate by the driver (215).

4. The hydro turbine generator rotor maintenance equipment according to claim 1, characterized in that: The inspection platform (23) is connected to the rotating beam (22) via an adjustment device (28).

5. The hydro turbine generator rotor maintenance equipment according to claim 4, characterized in that: The inspection platform (23) is provided with a fence (231) around it, and connecting rods (232) extending upward are respectively installed on both sides of the fence (231); the adjustment device (28) comprises a sliding sleeve frame (281) and a first push rod (282); the lower ends of the two connecting rods (232) are respectively connected and fixed to the inspection platform (23), and the upper ends are respectively slidably inserted into the sliding sleeve frame (281); one end of the first push rod (282) is connected to the sliding sleeve frame (281), and the other end is connected to the connecting rod (232).

6. The hydro-turbine generator rotor maintenance equipment according to claim 5, characterized in that: The adjustment device (28) further comprises a first slide seat (283) and a second push rod (284); the first slide seat (283) is slidably connected to the rotating beam (22); one end of the second push rod (284) is connected to the rotating beam (22), and the other end is connected to the first slide seat (283); the sliding sleeve frame (281) is connected to the first slide seat (283).

7. The hydro turbine generator rotor maintenance equipment according to claim 6, characterized in that: The maintenance platform (23) is provided with a support wheel (233) on the side close to the generator rotor (10).

8. The hydro turbine generator rotor maintenance equipment according to claim 1, characterized in that: A second slide seat (241) is mounted on the outer circle measuring rod (24), the second slide seat (241) is slidably connected to the rotating beam (22), and one end of the third push rod (242) is connected to the rotating beam (22), and the other end is connected to the second slide seat (241).

9. The hydro turbine generator rotor maintenance equipment according to claim 1, characterized in that: The lifting device (26) comprises a fixed sleeve (261), a telescopic rod (262), a loading platform (263) and a fourth push rod (264); the fixed sleeve (261) is mounted and connected to the rotating beam (22); the telescopic rod (262) is slidably and directionally telescopically connected to the fixed sleeve (261); the loading platform (263) is mounted on the telescopic rod (262); one end of the fourth push rod (264) is connected to the fixed sleeve (261) and the other end is connected to the telescopic rod (262).

10. A method for using the hydro-turbine generator rotor maintenance equipment according to claim 1, characterized in that: The following steps are involved: S1. Lifting the generator rotor (10) out of the generator set and placing it on a base (14); S2, hoisting the rotating beam (22) together with the rotating seat (21), aligning the rotating seat (21) with the center hole of the rotor center body (12), and connecting and fixing the rotating seat (21) with the rotor center body (12); S3, installing an inspection platform (23) and an outer circle measuring rod (24) at both ends of the rotating beam (22); S4. During maintenance, a worker enters the maintenance platform (23) to inspect and repair the outer wall of the generator rotor (10). The rotating beam (22) rotates through the rotating seat (21), thereby adjusting the inspection and maintenance position; When it is necessary to enter the rotor center body (12) for operation, the worker descends through the lifting device (26) and passes through the passage (13) on the rotor center body (12) to enter the rotor center body (12); When it is necessary to measure the roundness of the outer circumference of the generator rotor (10), a measuring device (25) is installed on the outer circle measuring rod (24), the rotating beam (22) rotates one circle, and the roundness of the outer circumference of the generator rotor (10) is measured by the measuring device (25).

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