Suspension type hydraulic generator stator maintenance auxiliary platform

Abstract

The utility model provides a suspension type hydro-generator stator maintenance auxiliary platform which comprises a plurality of hook platforms, each hook platform comprises a hook mechanism which is arranged on the ground of a foundation pit and connected with a platform beam frame through a connecting stand column, a springboard beam frame is arranged between the hook platforms, and the two ends of the springboard beam frame are connected with the platform beam frame. The platform beam frame is arranged on the upper side of the top end of the stator platform, the springboard beam frame and the platform beam frame form an annular platform, checkered steel is laid on the upper side of the annular platform, and at least one group of entering channels are arranged between the foundation pit ground and the annular platform which is connected with the stator overhaul bent frame through a second channel. The annular platform is connected with the stator annular maintenance platform through a third channel. The platform assists workers in entering a stator annular maintenance platform and a stator maintenance bent frame, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine stator maintenance, in particular to a suspended water turbine generator stator maintenance auxiliary platform. Background Art

[0002] In the maintenance of hydropower station generators, the maintenance of generator stators is a relatively complicated project. Since the stators of hydropower station generator sets are usually large in size and fixedly installed in the installation pit of the generator, the stator maintenance is generally carried out by keeping the stator in the original installation position for maintenance, that is, the stator is kept in the original installation position, the upper frame, rotor, lower frame, runner, top cover, etc. of the generator are removed and lifted out of the pit, and then the stator is inspected. Due to the large size of the stator and the deep pit, there are great safety hazards when using escalators, cranes and other equipment to send maintenance personnel into the stator for maintenance. In addition, maintenance personnel need complex cooperation of the crane when performing 360° maintenance on the inside of the stator, which leads to low maintenance efficiency and poor maintenance coverage, and it is easy to produce maintenance dead corners; and during maintenance, the maintenance personnel's body movements are usually strictly restricted by hanging baskets, safety belts, etc., making it difficult to use complex instruments to repair the stator. Therefore, a stator maintenance rack is generally constructed, and then a stator annular maintenance platform is constructed on the stator maintenance rack for maintenance. However, it is not easy for workers to enter the stator annular maintenance platform or the stator maintenance rack from the factory building, so the maintenance takes a long time. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a suspended hydraulic generator stator maintenance auxiliary platform, which assists access to the stator annular maintenance platform and the stator maintenance rack and is convenient for installation.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a suspended hydraulic generator stator maintenance auxiliary platform, including a plurality of hook platforms, the hook platform includes a hook mechanism, the hook mechanism is arranged on the foundation pit ground, the hook mechanism is connected to the platform beam frame by connecting columns, a springboard beam frame is arranged between the hook platforms, the two ends of the springboard beam frame are connected to the platform beam frame, the platform beam frame is arranged on the upper side of the top of the stator platform, the springboard beam frame and the platform beam frame form an annular platform, patterned steel is laid on the upper side of the annular platform, at least one group of access channels is arranged between the foundation pit ground and the annular platform, the annular platform is connected to the stator maintenance rack through the second channel, and the annular platform is connected to the stator annular maintenance platform through the third channel.

[0005] In a preferred solution, the hook mechanism is provided with a connecting base, and the connecting base is connected to the foundation pit ground through anchor bolts.

[0006] In a preferred solution, skirting boards are provided on both the inner and outer sides of the annular platform.

[0007] In a preferred solution, a fence is provided on the inner side of the annular platform.

[0008] In a preferred solution, support sleeves are provided at both ends of the platform beam frame, and both ends of the gangway beam frame are inserted into the support sleeves.

[0009] The utility model provides a suspended hydraulic generator stator maintenance auxiliary platform, which is installed on the foundation pit ground by hanging installation. It is installed between the stator base and the outer foundation of the machine pit. It is easy to install and convenient for workers to enter the stator annular maintenance platform or the stator maintenance rack from the factory building, which facilitates maintenance and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0011] Figure 1 It is the plan layout of the utility model;

[0012] Figure 2 The plan layout of the stator maintenance rack and the stator ring maintenance platform;

[0013] Figure 3 for Figure 1 Section view along plane AA;

[0014] Figure 4 It is the installation cross-sectional view of the hook platform;

[0015] Figure 5 It is a structural diagram of the hooking platform;

[0016] Figure 6 A top view of the hook platform;

[0017] Figure 7 It is the local laying diagram of pattern steel;

[0018] In the figure: hook mechanism 1, connecting column 2, platform beam frame 3, springboard beam frame 4, annular platform 5, patterned steel 6, entry channel 7, fence 8, second channel 9, third channel 10, skirting board 11, foundation pit floor 12, stator platform 13, stator maintenance rack 14, stator annular maintenance platform 15, connecting base 101, supporting sleeve 301. DETAILED DESCRIPTION

[0019] like Figures 1 to 7 As shown, a suspended hydro-turbine generator stator maintenance auxiliary platform includes a plurality of hook platforms, which are distributed in a ring along the foundation pit ground 12. The hook platform includes a hook mechanism 1, which is arranged on the foundation pit ground 12. The hook mechanism 1 is made by welding square tubes. The hook mechanism 1 is connected to the platform beam 3 through a connecting column 2, and the platform beam 3 is made by welding square tubes and angle steels.

[0020] A springboard beam frame 4 is provided between the hook platforms, and both ends of the springboard beam frame 4 are connected to the platform beam frame 3, which can be bolted or welded. In this embodiment, Figure 1 and 6 As shown, the two ends of the platform beam 3 are provided with support sleeves 301, and the two ends of the springboard beam 4 are inserted into the support sleeves 301. After specific use, they can be reinforced by bolts to achieve rapid assembly of the platform beam 3 and the springboard beam 4.

[0021] The platform beam frame 3 is arranged on the upper side of the top of the stator platform 13, and the springboard beam frame 4 and the platform beam frame 3 form an annular platform 5. Figure 7 As shown, patterned steel 6 is laid on the upper side of the annular platform 5, and the patterned steel 6 can prevent slipping during walking. The width of the annular platform 5 needs to cover the stator base.

[0022] like Figure 1 and 3 As shown, at least one set of access channels 7 is provided between the foundation pit floor 12 and the annular platform 5. In this embodiment, two sets of access channels 7 are provided, which are symmetrically arranged. The annular platform 5 is connected to the stator maintenance rack 14 through the second channel 9, and the annular platform 5 is connected to the stator annular maintenance platform 15 through the third channel 10. Figure 2 As shown, the stator maintenance rack 14 and the stator annular maintenance platform 15 are existing stator maintenance platforms. The stator maintenance rack 14 is built outside the generator pit and hoisted into the pit as a whole for use. The stator annular maintenance platform 15 is built on the upper side of the stator maintenance rack 14 and can be arranged in layers according to height.

[0023] The entrance channel 7 connects the foundation pit ground 12 and the annular platform 5, the second channel 9 connects the annular platform 5 and the stator maintenance rack 14, and the third channel 10 connects the annular platform 5 and the stator annular maintenance platform 15. The entrance channel 7, the second channel 9 and the third channel 10 ensure that the operating personnel can go up and down safely and conveniently. The overall load capacity is not less than 1000kg, and the angle is about 45°, which is convenient for the operating personnel to go up and down safely.

[0024] Preferably, Figures 5 and 6 As shown, the hook mechanism 1 is provided with a connecting base 101, and the connecting base 101 is connected to the foundation pit ground 12 through anchor bolts to facilitate the installation of the hook platform.

[0025] During specific use, the inner and outer sides of the annular platform 5 are provided with skirting boards 11, and the inner side of the annular platform 5 is provided with a fence 8 to ensure walking safety and prevent tools from falling.

[0026] The hydraulic generator stator maintenance auxiliary platform is installed on the foundation pit ground 12 by hanging installation, which is easy to install and can be assembled on site or assembled outside the foundation pit and then hoisted and installed as a whole, so that the staff can conveniently enter the stator annular maintenance platform or the stator maintenance rack from the factory building, thereby facilitating maintenance and improving maintenance efficiency.

Claims

1. A suspended hydro-generator stator maintenance auxiliary platform, characterized in that: The invention comprises a plurality of hook platforms, wherein the hook platforms comprise a hook mechanism (1), the hook mechanism (1) being arranged on a foundation pit ground (12), the hook mechanism (1) being connected to a platform beam frame (3) through a connecting column (2), a springboard beam frame (4) being arranged between the hook platforms, the two ends of the springboard beam frame (4) being connected to the platform beam frame (3), the platform beam frame (3) being arranged on the upper side of the top of a stator platform (13), the springboard beam frame (4) and the platform beam frame (3) forming an annular platform (5), the upper side of the annular platform (5) being paved with patterned steel (6), at least one set of access passages (7) being arranged between the foundation pit ground (12) and the annular platform (5), the annular platform (5) being connected to a stator maintenance rack (14) through a second passage (9), and the annular platform (5) being connected to a stator annular maintenance platform (15) through a third passage (10).

2. The suspended hydro-generator stator maintenance auxiliary platform according to claim 1 is characterized in that: The hook mechanism (1) is provided with a connection base (101), and the connection base (101) is connected to the foundation pit ground (12) via anchor bolts.

3. The suspended hydro-generator stator maintenance auxiliary platform according to claim 1 is characterized by: The inner side and the outer side of the annular platform (5) are both provided with skirting boards (11).

4. The suspended hydro-generator stator maintenance auxiliary platform according to claim 1 is characterized in that: A fence (8) is provided on the inner side of the annular platform (5).

5. The suspended hydro-generator stator maintenance auxiliary platform according to claim 1 is characterized by: Support sleeves (301) are provided at both ends of the platform beam frame (3), and both ends of the springboard beam frame (4) are inserted into the support sleeves (301).

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