What is the Shell and tube heat exchanger installation precautions?

- Aug 24, 2018-

Shell and tube heat exchanger installation precautions


Since the shell-and-tube heat exchanger is one of the traditional heat exchangers, there are inevitably many key issues that must be paid attention to during the construction of the shell-and-tube heat exchanger. What are the precautions for the installation of shell-and-tube heat exchangers? Guangzhou Union tells you the following information:

 

Shell and tube heat exchangers must be pressure tested before installation

 

The heat exchanger must be tested for hydraulic pressure test within 1.5 times of the working pressure. The steam part must not be lower than the steam supply pressure plus 0.3 MPa; the hot water part must not be lower than 0.4 MPa. Under the test pressure, the pressure should be kept for 10 minutes without any change.

 

Shell-and-tube heat exchanger construction must have sufficient building space and access


The front end of the shell-and-tube heat exchanger in the building space should have space for pumping and unloading the tube bundle, that is, the distance between the head of the shell and the roof should not be less than the length of the heat exchanger, and the net width of the equipment operation and operation channel should not be less than 0.8m. Sufficient operating space facilitates disassembly and refurbishment.

 

The instrumentation of the shell-and-tube heat exchanger is guaranteed to be observed


Heat exchanger installation

Relevant instruments and meters are convenient for inspection and inspection. The installation height of all kinds of valves and instruments should be easy to operate and observe, so that problems can be solved once problems arise.

 

Vertical space distance also has corresponding requirements

 

The vertical clearance from the high point of the upper part of the heater to the low point of the building structure shall meet the requirements for installation and inspection, and shall not be less than 0.2m. This reason is for easy maintenance.