CN212985438U

CN212985438U - Impact type runner assembling and disassembling structure

Info

Publication number: CN212985438U
Application number: CN202021410383.7U
Authority: CN
Inventors: 唐杰天; 刘渝奇
Original assignee: Chongqing Water Turbine Works Co Ltd
Current assignee: Chongqing Water Turbine Works Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-16
Anticipated expiration: 2030-07-17

Abstract

The utility model provides a structure is installed and removed to impacted style runner, set up a plurality of lewis holes one on the runner and set up lewis hole two on hydraulic turbine main shaft support piece including the equipartition, lewis hole two is located the hydraulic turbine main shaft outside, its characterized in that: the first lifting hole and the second lifting hole are at least three, the first lifting hole and the second lifting hole are of screw hole structures, a detachable screw type lifting ring I is connected in each first lifting hole in a matched mode, a detachable screw type lifting ring II is connected in each second lifting hole in a center-divided matched mode, the screw type lifting rings II are arranged in an inverted mode, and each lifting ring I is connected with the corresponding lifting ring II through a hand hoist. The utility model provides an impact runner is installed and removed structure has simple structure, workable manufacturing, and advantage such as the operation of being convenient for can overhaul hydraulic turbine runner under the condition of not demolising parts such as generator hood and collecting ring when overhauing hydroelectric set, has effectively shortened the maintenance time, and installs and removes the in-process and have the advantage of installing and removing stability good and the security is high.

Description

Impact type runner assembling and disassembling structure

Technical Field

The utility model relates to a hydraulic turbine, concretely relates to impact runner installs and removes structure.

Background

The water turbine runner is one of the important parts of the water turbine generator set, the runner bears the huge impact force of water flow, and in the use stage, the runner needs to be periodically overhauled and maintained, and the damaged part needs to be subjected to repair welding, polishing, flaw detection spraying and other treatments. In the process of overhauling/maintaining the rotating wheel, the rotating wheel needs to be disassembled from the main shaft, and the rotating wheel is installed on the main shaft again after the rotating wheel is repaired to be qualified.

At present, the conventional impact runner overhaul mode is that a hand block is hung on a travelling crane of a power station, the hand block penetrates through central holes of a generator and a water turbine main shaft, then the hand block is connected with a runner of a horizontal grid plate trolley of a water layer overhaul platform through a runner hoisting tool, and hoisting and detaching of the water turbine runner are realized through the lifting of the travelling crane. The operation method needs to disassemble the upper hood of the generator, the collecting ring and other parts, increases the workload, has higher lifting requirement on the traveling crane due to the smaller size of the central hole of the large shaft, and is easy to cause unstable lifting of the rotating wheel and poor safety due to the long length of the suspended chain block.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an impact type runner structure of installing and removing of easy operation, lift by crane steadily, the security is good.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a structure is installed and removed to impacted style runner, includes that the equipartition sets up a plurality of lewis holes one on the runner and sets up lewis hole two on hydraulic turbine main shaft support spare, and lewis hole two is located the hydraulic turbine main shaft outside, its characterized in that: the first lifting hole and the second lifting hole are at least three, the first lifting hole and the second lifting hole are of screw hole structures, a detachable screw type lifting ring I is connected in each first lifting hole in a matched mode, a detachable screw type lifting ring II is connected in each second lifting hole in a center-divided matched mode, the screw type lifting rings II are arranged in an inverted mode, and each lifting ring I is connected with the corresponding lifting ring II through a hand hoist.

In order to further improve the stability and the safety of the assembly and disassembly structure, the upper end part of the rotating wheel is provided with a small flange, the lower end part of the rotating wheel is provided with a large flange, the rotating wheel is connected with a main shaft of the water turbine through the small flange and a fastening piece, and the rotating wheel is tightly pressed through the large flange and the fastening piece.

As the preferred scheme, four lifting holes I and four lifting holes II are respectively arranged, and four sets of hand hoists are arranged.

Preferably, the small flange and the large flange share the same long screw and the nut thereof as the fastener.

In order to facilitate the maintenance operation, a trolley is arranged on the maintenance platform below the rotating wheel.

Has the advantages that: the utility model provides an impact runner assembly and disassembly structure has simple structure, easy manufacturing, advantages such as convenient operation, when overhauing hydroelectric set, can overhaul the hydraulic turbine runner under the condition of not demolising parts such as generator aircraft bonnet and collecting ring, has effectively shortened the maintenance time, compare in the current mode of assembly and disassembly, need not to wear to draw the hoist from the shaft hole in the assembly and disassembly process, the assembly and disassembly degree of difficulty is little, easy and simple to handle, still saved crane/driving driver and assistant, general worker, can save two manual works/day at least; adopt the utility model provides an impact type runner is installed and removed structure installs and removes the condition that the runner rocks can not appear in the in-process, has the advantage of installing and removing stability good and the security is high.

Drawings

FIG. 1 is a schematic view of an embodiment of an impact runner assembly and disassembly;

fig. 2 is a schematic view of a screw-type hoisting ring of an impact runner assembly and disassembly structure in an embodiment.

Detailed Description

In the following, the technical solution of the present invention will be further explained in conjunction with the following embodiments, which are not to be construed as limiting the scope of the present invention, and those skilled in the art can make some non-essential improvements and modifications according to the contents of the claims of the present invention.

Examples

As shown in fig. 1, an impact type runner assembling and disassembling structure comprises a plurality of first lifting holes uniformly distributed on a runner 12 and a second lifting hole arranged on a main shaft supporting member of a water turbine, wherein the second lifting hole is positioned outside a main shaft 11 of the water turbine, the first lifting hole and the second lifting hole are respectively provided with at least three parts, the first lifting hole and the second lifting hole adopt screw hole structures, as shown in fig. 2, a detachable screw type lifting ring I3 is connected in each first lifting hole in a matching manner, a detachable screw type lifting ring II 1 is connected in each second lifting hole in a halving manner, the screw type lifting ring II 1 is arranged in an inverted manner, and each lifting ring I3 is connected with a corresponding lifting ring II 1 through a hand hoist 2. Wherein, the upper end of the rotating wheel 12 is provided with a small flange 7, the lower end of the rotating wheel 12 is provided with a large flange 8, the rotating wheel 12 is connected with the main shaft 11 of the water turbine through the small flange 7 and a fastening piece, and the rotating wheel 12 is pressed tightly through the large flange 8 and the fastening piece.

In a specific scheme, four lifting holes I and four lifting holes II are respectively arranged, and four sets of hand hoists 2 are arranged; the small flange 7 and the large flange 8 share the same long screw rod 4 and the nut 5 thereof as a fastener. A trolley 13 is arranged on the maintenance platform 14 below the runner 12.

During the use, demolish the connecting fastener of runner 12 and hydraulic turbine main shaft 11 earlier, then transfer the hand calabash 2 simultaneously until runner 12 places on dolly 3, take off hand calabash 2, then push dolly 3 to the position that does not get in the way, after the maintenance finishes push dolly 3 under hydraulic turbine main shaft 11, hang hand calabash 2 again and upwards lifting runner 12 simultaneously, link to each other runner 12 and hydraulic turbine main shaft 11 through small flange 7 and fastener behind the suitable position, compress tightly runner 12 through big flange 8 and fastener, connect main shaft coupling bolt nut again at last, take off hand calabash 2.

The impact type runner assembling and disassembling structure has the advantages of simple structure, easiness in processing and manufacturing, convenience in operation and the like, when the hydroelectric generating set is overhauled, the runner of the hydraulic turbine can be overhauled under the condition that parts such as a generator cover, a collecting ring and the like are not dismounted, the overhauling time is effectively shortened, compared with the existing assembling and disassembling mode, a lifting appliance does not need to be pulled through a shaft hole in the assembling and disassembling process, the assembling and disassembling difficulty is small, the operation is simple and convenient, a crane/driving driver, auxiliary work and common work are also saved, and at least two workers/day can be saved; by adopting the impact type rotating wheel assembling and disassembling structure, the condition that the rotating wheel shakes can not occur in the assembling and disassembling process, and the impact type rotating wheel assembling and disassembling structure has the advantages of good assembling and disassembling stability and high safety.

Claims

1. The utility model provides a structure is installed and removed to impacted style runner, includes that the equipartition sets up a plurality of lewis holes one on runner (12) and sets up the lewis hole two on hydraulic turbine main shaft support spare, and lewis hole two is located hydraulic turbine main shaft (11) outside, its characterized in that: the lifting hole I and the lifting hole II are at least three, the lifting hole I and the lifting hole II are of screw hole structures, a detachable screw type lifting ring I (3) is connected in each lifting hole I in a matched mode, a detachable screw type lifting ring II (1) is connected in each lifting hole II in a matched mode, the screw type lifting ring II (1) is arranged in an inverted mode, and each lifting ring I (3) is connected with the corresponding lifting ring II (1) through a hand hoist (2).

2. The impulse wheel mounting or dismounting structure according to claim 1, wherein: the upper end part of the rotating wheel (12) is provided with a small flange (7), the lower end part of the rotating wheel (12) is provided with a large flange (8), the rotating wheel (12) is connected with a main shaft (11) of the water turbine through the small flange (7) and a fastening piece, and the rotating wheel (12) is compressed through the large flange (8) and the fastening piece.

3. The impulse wheel mounting or dismounting structure according to claim 2, wherein: the first hanging hole and the second hanging hole are respectively provided with four sets of hand hoists (2).

4. The impulse wheel mounting or dismounting structure according to claim 3, wherein: the small flange (7) and the large flange (8) share the same long screw (4) and the nut (5) thereof as a fastener.

5. The impulse wheel mounting or dismounting structure according to claim 4, wherein: a trolley (13) is arranged on the maintenance platform (14) below the rotating wheel (12).