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Axial flow paddle turbine installation method

An installation method and water turbine technology, which are applied in hoisting devices, mechanical equipment, hydroelectric power generation, etc., can solve the problems of installation work safety risks, doubts about the rationality of the installation process, and the broken wire rope of the support cover installation hole.

Active Publication Date: 2020-01-10
CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, during the actual installation process, the steel wire rope in the installation hole of the support cover was partially broken and the strands were broken, which brought great safety risks to the installation work. During the installation process of the 4 units, two of the above-mentioned phenomena occurred, and all of them appeared in the support In the process of lowering the cover, one has to doubt the rationality of the installation process

Method used

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  • Axial flow paddle turbine installation method
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  • Axial flow paddle turbine installation method

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Embodiment Construction

[0040] Take the installation of water turbines of Tongjiezi Hydropower Station as an example below to describe the present invention in detail.

[0041] The hydraulic turbine of Tongjiezi Hydropower Station is a vertical axial flow propeller structure with a runner diameter of 8.5m. The "three-body crane" hoisting of the turbine uses a special spreader to transfer the runner, support cover, and the main shaft of the turbine into the machine pit as a whole, and the total lifting weight is about 490.2t. See Table 1 for the main components and total quantity of the overall hoisting of the turbine.

[0042] Table 1 Weight list of various components for hoisting of the turbine

[0043]

[0044] According to the design of the unit supplier Dongfang Electric Machinery Factory, the hoisting method of the turbine is the "three-in-one hoisting" method of the runner, the support cover, and the main shaft of the turbine. The specific steps have been described in the background techno...

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Abstract

The invention discloses an installing method of an axial flow hydroturbine with movable blade. A three-body coupled lifting method of an axial flow movable-blade type runner, a supporting cove and a hydroturbine main shaft is adopted. The installing method is characterized in that after an original technology of which the supporting cover is lowered after main shaft bolts and nuts are assembled ischanged into the installing method that the main shaft bolts and nuts are assembled after the supporting cover is lowered, the lifting and lowering heights of the supporting cover and the hanging time of the supporting cover on a main shaft are greatly reduced, steel wire ropes are prevented from being damaged, and distraction of installing personnel due to fatigue is prevented; and the securityrisk is effectively reduced, the installing working efficiency is improved, and the installing period of time is shortened.

Description

technical field [0001] The invention belongs to the technical field of hydropower, and in particular relates to an installation method of an axial flow paddle water turbine. Background technique [0002] Jinsha River, Dadu River and other rivers in southwest Sichuan are rich in hydropower resources, and many hydropower stations have been built, such as Dadu River Tongjiezi Hydropower Station, which is equipped with several axial-flow propeller turbine generator sets, which are manufactured by Dongfang Electric Machinery Factory. The installation process of the water turbine is also provided by the factory. The process is a "three-in-one hoisting" method of the runner, the support cover, and the main shaft. The steps are: [0003] 1. Install the main shaft of the turbine vertically on the designated foundation plate in the installation room, and use anchor bolts to position it together to prevent it from falling over; [0004] 2. Lift the support cover, insert it into the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/08B66C1/12B66D1/04F03B11/00
CPCB66C1/12B66C13/08B66D1/04F03B11/00Y02E10/20
Inventor 杜杰向虹光韩涛强海军
Owner CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD