Dismantling method for horizontal U-tube heat exchanger tube bundle

Abstract

The invention provides a dismantling method for a horizontal U-tube heat exchanger tube bundle and relates to the field of heat exchanger dismantling. The method comprises the following steps: a firstchain block is fixed directly above a heat exchanger; the other end of the first chain block is connected with a tube plate of the heat exchanger; the front of the tube plate of the heat exchanger isconnected with a movable pulley; a traction rope is wound around the movable pulley, one end of the traction rope is fixed and the other end of the traction rope passes through a fixed pulley and isconnected with a first crane; the fixed pulley is connected with one end connected with a second chain block, and the other end connected with the second chain block is fixed on the ground; the firstcrane is started to pull the traction rope and draw out the tube bundle. According to the dismantling method for the horizontal U-tube heat exchanger tube bundle, a horizontal displacement is converted into a vertical displacement by using the fixed pulley, the movable pulley plays a role in reducing the traction force generated by friction, and the tube bundle of the heat exchanger is rapidly pulled out in an environment without the assistance of a fixed lifting tool, so manpower, time and cost are saved.

Description

technical field [0001] The invention relates to the field of heat exchanger disassembly, in particular to a method for dismantling a tube bundle of a horizontal U-shaped tube heat exchanger. Background technique [0002] U-shaped tube heat exchanger is a kind of shell-and-tube heat exchanger, which is composed of tube plate, shell, tube bundle and other components. Under the condition of the same diameter, the U-shaped tube heat exchanger has the largest heat exchange area; it has a simple structure, compact structure, high sealing performance, convenient maintenance and cleaning, the least metal consumption and the lowest cost under high temperature and high pressure; The heater has only one tube plate, which has good thermal compensation performance and strong pressure bearing capacity, and is suitable for operation under high temperature and high pressure conditions. [0003] The core problem in the dismantling process of the U-shaped tube heat exchanger is how to extrac...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for dismantling the tube bundle of a horizontal U-shaped tube heat exchanger, which solves the problem that in the existing method, it is difficult to maintain balance in the traction of lifting equipment when the working conditions and environment on site are relatively complicated. , easy to cause equipment damage

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