Excuse me, is the thermometer installed on the jacket as shown in the diagram?
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This means that the thermometer tubing has to pass through the jacket, and the openings in the jacket and the process tube must be perfectly aligned. Is it feasible to carry out this construction?
This can be achieved by welding a thermometer sleeve at the location where the thermometer will be installed on the pipe or container in advance; either flange connection or threaded connection can be used. The length of the sleeve that extends inward should be sufficient to allow for accurate measurement of the working temperature of the medium, while the exposed part should be insulated and heated. Non-destructive testing of the welds is carried out in accordance with the specifications.
This is indeed quite challenging for the construction team, but installing thermometers on pipes with jackets is exactly what is required
No. At the installation location, the jacket should be removed, and then installation should be carried out according to normal requirements. Two layers are welded at the jacket area, which makes construction and inspection difficult; moreover, the jacket temperature affects the measurements. The image below was drawn with a mouse; just give it a look.
In other words, this is equivalent to providing a separate pipeline for the thermometer, with both ends connected to pipeline flanges, and the jacket layer bridging across them
Not necessarily. Holes can be made in the outer layer of the jacket, and the edges can be sealed against the equipment.
A magnifying tube can be used at the temperature measurement site, and it does not affect the heat conduction sleeve
This type of thermometer is generally inserted at an angle into the pipeline
The full jacket and half jacket installation methods are different; one can refer to the petrochemical standards for jacket pipes