Horizontal balancing device and method for dismounting flue gas turbine bearing box cover

Abstract

The invention discloses a horizontal balancing device and a method for dismounting a flue gas turbine bearing box cover. The horizontal balancing device is characterized in that the horizontal balancing device comprises a balancing beam; a detachable balancing weight is arranged at the rear end of the balancing beam; a first hoisting lug connected with a first hoisting point of the bearing box cover through a shaft is arranged at the front end of the balancing beam; a third hoisting lug connected with a second hoisting point of the bearing box cover through a shaft is arranged between the front end and the rear end of the balancing beam; a second hoisting lug connected with a construction machine is arranged between the first hoisting lug and the third hoisting lug; and a fourth hoisting lug is arranged at the rear end of the balancing beam. The horizontal balancing device and the method for dismounting the flue gas turbine bearing box cover have the advantages that the hoisting gravity center of the bearing box cover is moved outwards to the outer portion of a flue gas turbine, thus, the bearing box cover can be maintained horizontal to be in place directly and does not need to be dragged, the construction difficulty is lowered, manpower input is reduced, the working efficiency is improved, parts such as bearings and sealing faces of the bearing box cover are not damaged, the mounting quality is improved, and errors of measured data are reduced; and in addition, the horizontal balancing device can adapt to demands of different bearing box covers by replacing balancing weights with different weights and adjusting the positions of all the hoisting lugs.

Description

technical field [0001] The invention relates to the field of disassembly and assembly of the bearing box cover of a flue gas turbine, in particular to a horizontal balance device and a disassembly method for the disassembly and assembly of the bearing box cover of a cigarette machine. Background technique [0002] In the field of petrochemical industry, due to the frequent maintenance of large flue gas turbines, the bearing box cover also needs to be opened frequently. In addition, due to the need for gap measurement during the maintenance process, the bearing box cover also needs to be disassembled and assembled many times. However, most of the bearing box cover needs to enter the interior of the flue gas turbine equipment during installation. The installation space of the inner wall of the flue gas turbine shell is in the shape of a horizontal semi-cone with a narrow inside and a wide outside. The installation space is narrow, and the weight of the box cover is about 900kg....

AI Technical Summary

Problems solved by technology

However, since the center of gravity of the bearing box cover at the final position is inside the equipment, and due to the limitation of the installation environment, no lifting point can be set above the center of gravity at the final position. In order to install the bearing box cover smoothly, additional people are required to drag it Lifting and other manual operations, the installation space is narrow, and it is not easy to construct. Therefore, the above-mentioned method of hoisting directly by using the upside-down wire rope and relying on dragging to position accurately is not only time-consuming and laborious, but also the bearing box cover cannot be completely kept in place horizontally, which is easy to damage Bearings and bearing housing cover sealing surface and other components, in addition will increase the error of measurement data

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