Hoisting rack for hoisting and mounting condenser shell module

Abstract

The invention provides a hoisting rack for hoisting and mounting a condenser shell module. The hoisting rack comprises girders, horizontal stay bars, slant stay bars, top horizontal lifting lugs, top slant lifting lugs and bottom lifting lugs; two girders are connected through the horizontal stay bars and the slant stay bars to form a main frame of the hoisting rack; the two girders are symmetrically arranged on two sides of the longitudinal centerline of the main frame; and the tops of the girders are welded with the top slant lifting lugs and the top slant lifting lugs, and the bottoms of the girders are welded with the bottom lifting lugs. The hoisting rack is simple in structure, reasonably stressed, safe and reliable, and can meet the requirements for hoisting and mounting condenser shell modules at different hoisting points in different power plants. The invention also provides various using methods of hoisting by using single hoisting equipment, hoisting by using two pieces of hoisting equipment on two sides, hoisting by using a plurality of pieces of hoisting equipment alternately and the like. The using methods are wide in application range.

Description

technical field [0001] The invention belongs to the field of lifting steel structures used for installation and construction of large-scale equipment in power plants, and in particular relates to a hoisting frame used for hoisting and installing condenser shell modules. Background technique [0002] The condensing equipment is an important auxiliary machine of the steam turbine unit. In the thermodynamic cycle of the steam turbine unit, the condensing equipment plays the role of a cold source. The main task is: to condense the exhaust steam of the steam turbine into water, and send the condensed water back to the steam generator ( or boiler) to continue to use; establish and maintain a certain degree of vacuum at the exhaust port of the steam turbine. Therefore, condensing equipment plays an important role in the safe and economical operation of the entire power plant. Condenser is an important part of condensing equipment. It is mainly composed of shell, throat, tube bundl...

AI Technical Summary

Problems solved by technology

Due to the obstruction of the internal structure of the steam turbine house, it is impossible to lift the condenser over the obstacle with one or two general-tonnage lifting equipment, and it can be installed with super-large-tonnage lifting equipment, but the economy is poor; at the same time, when the condensate The shell module 1 of the device is directly hoisted at four points using a hoisting device (see Figure 1a ) or lifting on both sides of two lifting devices (see Figure 1b ), the horizontal component force of the lifting rope 2 may have adverse effects on the condenser shell module

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