A foldable circulating water forebay flat filter screen and its folding method

Abstract

The invention belongs to the technical field of flat filtration, and in particular relates to a foldable flat filter screen for a circulating water front pool, including a filter screen, wherein the filter screen is multiple, and the outer side of the filter screen is provided with a fixed frame that is fixedly connected. The upper and lower ends of the fixed frame are provided with symmetrically distributed adjustment grooves, the adjustment grooves are located on the same side of the fixed frame, and the cross-section of the adjustment grooves is concave, and there is an active connection between the adjacent fixed frames. There is a lifting chain in the adjustment groove, the bottom of the lifting chain is connected and fixed with the bottom of the filter screen at the bottom, and the lifting chain is provided with a plurality of lifting rings for lifting the fixed frame, and the length of the lifting ring is greater than that of the adjustment groove. It can avoid the problem that the filter screen cannot be cleaned and can not be lifted out for cleaning due to mechanical failure, solve the problems of lifting, spreading, cleaning and slow speed of the filter screen, and also solve the danger that the operator does not need to climb to a high place to work.

Description

technical field [0001] The invention belongs to the field of flat filter technology, and in particular relates to a foldable flat filter net of a circulating water forebay and a folding method thereof. Background technique [0002] Every year from late April to mid-May, a large number of catkins and catkins will be produced. A large number of catkins and catkins will fall into the river and cooling tower and will be brought to the circulating water system of the power plant, which has brought great hidden dangers to the safe production of the power plant. . In this season, the power plant will organize personnel to continuously flush the forebay filter screen of the circulating water pump to prevent the interruption of circulating water and the tripping accident of the steam turbine generator set. [0003] At present, there are two kinds of circulating water pump forebay filters used in power plants: the first is the mechanical rotary filter, and its disadvantage is that th...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two kinds of circulating water pump forebay filters used in power plants: the first is the mechanical rotary filter, and its disadvantage is that the mechanical rotary filter is not effective in cleaning catkins and catkins during the season when a large amount of catkins and poplar catkins are produced. Well, if the mechanical rotating filter screen fails to be cleaned once a mechanical failure occurs, the circulating water will be interrupted and the turbine generator set will be disassembled and tripped; It takes a long time to clean the whole process. If the blocked filter screen is not replaced in time, it will cause a tripping accident of the steam turbine generator set. The electric hoist above the flat filter screen is faulty, and the filter screen cannot be hoisted out for cleaning, which will also cause the interruption of circulating water and the tripping accident of the steam turbine generator set

Images