Shutter-shaped baffle plate fixed tube-sheet heat exchanger and machining and installing method

Abstract

The invention discloses a shutter-shaped baffle plate fixed tube-sheet heat exchanger and a machining and installing method and belongs to the technical field of heat exchangers used in industries of petrochemical engineering, energy power and the like. The shutter-shaped baffle plate fixed tube-sheet heat exchanger is characterized in that a heat exchange tube bundle installed on a shutter-shaped baffle plate in a penetrating and inserted manner is arranged in a heat exchanger shell; the heat exchange tube bundle is connected to fixed tube sheets arranged between a tube box and the shell in an expanded manner or is welded and fixed to the fixed tube sheets arranged between the tube box and the shell. A tube side inlet is formed in the upper side of a front tube box body, and a tube side outlet is formed in the lower side of a rear tube box body. A shell side outlet is formed in the upper side of the shell, and a shell side inlet is formed in the lower side of the shell. The shutter baffle plate is composed of a baffle ring and shutter blades arranged at a certain inclination angle. A flowing flow field of a shell side is even, a flowing dead zone of the shell side is small, meanwhile, the local fluid turbulence level is improved through the shutter baffle plate, the heat exchange efficiency is improved, consumption of pump power under the same heat exchange amount is reduced, the structure is compact, installing and machining are simple, scaling is not liable to be generated, the service life is long, and the shutter-shaped baffle plate fixed tube-sheet heat exchanger is suitable for occasions such as petrochemical engineering and power plants where fluid flow is large and consumption of pump power is large.

Description

technical field [0001] The invention relates to a louver-shaped baffle-fixed tube-sheet heat exchanger and a processing and installation method thereof, belonging to the technical field of heat exchangers used in petrochemical, energy and power industries, and in particular to a louver-shaped baffle-fixed tube-sheet heat exchanger The technical scheme of the processing and installation method of the heat exchanger and the louver-shaped baffle. Background technique [0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, and plays an important role in chemical, petroleum, food and many other industrial productions. In chemical production, it can be used as a heater, cooler, condenser, evaporator, etc., and is widely used. Among them, the shell-and-tube heat exchanger is the majority, which has a series of advantages such as easy manufacture, low production cost, wide range of material selection, convenient cleaning, strong adaptab...

AI Technical Summary

Problems solved by technology

However, there are many problems in the commonly used traditional bow-shaped baffle shell-and-tube heat exchangers: (1) The shell side forms a "Z" shape to restrict the outflow. This flow form has a large resistance along the way and requires a large power of power equipment; ( 2) The flow dead zone is easy to form behind the vertical baffles, resulting in a decrease in heat transfer efficiency and serious scaling; (3) The fluid with a certain speed "sweeps" the tube bundle, which induces vibration of the heat transfer tube bundle and shortens its service life

[0004] Among them, the spiral baffle rod heat exchanger can effectively reduce the flow dead zone, and has greatly improved the heat transfer effect and flow resistance, but the structure, manufacturing and installation are complicated

The flow direction of the shell-side fluid of the baffle rod heat exchanger is parallel to the tube bundle, which almost realizes the complete counterflow of the tube-side and shell-side fluid. It has good shockproof and anti-fouling performance and low flow resistance; Strict, limited in mass promotion and use

Across the existing technologies, various new heat exchangers have improved the disadvantages caused by the use of traditional heat exchangers to a certain extent, but they still cannot replace the bow-shaped baffle heat exchangers and promote their use.

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