Special icehouse for hydropower engineering

Abstract

A special icehouse of hydroelectric engineering consists of ice storing house, ice harrowing machine, hoisting system of ice harrowing machine, ice gate, hoisting system of ice gate, cold air fan, ice screw conveyor and ice outgoing gate. It features that left side plate, right side plate and base plate of ice storing house are prepared by welding steel plate and channel steel together and partial root part of chain wheel tooth on ice harrowing machine is formed in wedge shape.

Description

technical field [0001] The invention relates to an ice store, in particular to a special ice store for hydropower projects. Background technique [0002] The amount of concrete used in the pouring system of the dam of the hydropower station is large. After the concrete of the dam body is poured, with the development of cement setting and hardening, a large amount of heat of hydration will be released, which will increase the internal temperature of the concrete. Over time, the internal temperature gradually decreases as the heat is gradually dissipated. At the same time, the volume of concrete is constantly changing. When the concrete is constrained by the foundation or adjacent pouring blocks, the safety factor of the hydraulic structure will be reduced and the stability will be adversely affected. According to the dam building experience at home and abroad, the temperature control of dam body concrete is an effective method to prevent cracks in mass concrete and ensure th...

AI Technical Summary

Problems solved by technology

However, the existing ice storage has the following defects: 1. The existing ice storage is generally an assembled storage body, and the assembled storage body is integrally welded by steel plates and section steel. , and it is not easy to relocate and demolish

2. The existing large-frame ice rake machine was originally an assembled truss type, and its overall rigidity is not easy to be guaranteed, and it is easy to deform

3. The original design uses ordinary transmission sprockets and transmission chains. When there is ice between the two chain plates of the chain, it is easy to skip teeth, causing the chain to slip off from the sprocket and cannot work normally.

Later, during the operation, it was found that because the looseness of the flake ice was constantly changing, if the conveying speed was kept constant, it would sometimes cause too much flake ice to be transported instantaneously, and it would be blocked at the ice outlet gate.

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