Questions regarding the connection methods for thermoresistive thermocouples and the selection of sleeves
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Here are my personal opinions: 1. Thermal resistors, on pipelines, low pressure (PN
The strength of a connector’s voltage resistance is not determined by the size of anyone’s face. . Small threads can withstand 100MPa and 700MPa without losing their integrity; they’re easy to use. It’s just as simple as when you, the original poster, let little urine droplets fall one by one～～～ The flange has a huge \"face\" – if you slap that face until it swells, it won’t even be able to withstand 100MPa either {:3_51:}.
The thermometer nozzles on the equipment are mostly flanged, while those on the pipes are mostly threaded. The *customs of each design institute may vary.
What the expert meant is that one shouldn’t choose threaded connections just because of low pressure and low temperature, nor should flanged connections be used solely due to high pressure and high temperature. By the way, a few days ago I tried to upload some materials from a forum, but it wasn’t possible; you can search on the site for “Knowledge of Common Instrument Installation and Basic Instrument Principles”
When deciding whether to use a sleeve, several factors need to be considered: the ease of maintenance, the required speed of response to temperature changes, the degree of corrosion of the medium, and pressure levels as well.
I recommend using welded blind end sleeves for the pipes or equipment whenever possible, and employing armored thermometers with slip-on threaded connections between the sleeves.
After reading \"Knowledge of Common Instrument Installation and Basic Instrument Principles,\" it’s clear that pressure is not the main focus; rather, temperature and the properties of the medium are what matter most.
What are the advantages and disadvantages of using welded sleeves and flanged sleeves? Or which place is more suitable?
The weight of the material is reduced by at least half, which contributes to energy savings and environmental protection; it is cost-effective, requires low replacement costs in the future, is easy to replace, can be replaced online, and the thermometers can be standardized to improve interchangeability.....