Improved structure of lower temperature measuring opening of polymerization kettle and polymerization kettle adopting same

Abstract

The invention discloses an improved structure of a lower temperature measuring opening of a polymerization kettle and the polymerization kettle adopting the same. The improved structure comprises a polymerization kettle body and a kettle body clamping sleeve plate, wherein the outer wall of one end of a hot resistance outer protecting pipe body is fixed on a kettle body clamping sleeve, the other end of the hot resistance outer protecting pipe body is sealed and can educe a hot resistance tail section output section, and an inner end socket of the hot resistance outer protecting pipe body and the outer wall of the polymerization kettle body are separated from each other; one end of a containing connecting pipe of a lower temperature measuring opening is fixed on the polymerization kettle body, the other end of the containing connecting pipe of the lower temperature measuring opening is arranged in the hot resistance outer protecting pipe body in a sealing manner and is separated from the hot resistance outer protecting pipe body; the front part of a hot resistance passes through a sealing end cover of the containing connecting pipe of the lower temperature measuring opening and stretches into the polymerization kettle body, and the tail section of the hot resistance extends out of a sealing end of the hot resistance outer protecting pipe body. The improved structure provided by the invention has the advantages of preventing the potential risk caused by cracks of the kettle body due to that the expansion contractile force generated by the polymerization kettle body can rip a joint of the kettle body clamping sleeve and the polymerization kettle body, preventing water leakage of the lower temperature measuring opening of the polymerization kettle, and improving the production security.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a temperature measuring structure used at a temperature measuring port of a polymerization kettle, and a polymerization kettle adopting the temperature measuring structure. Background technique [0002] The lower temperature measuring point of the polymerization kettle is located above the lower head of the polymerization kettle. It is equipped with a temperature measuring thermal resistance to measure the reaction temperature in the kettle in time and transmit it to the internal operation room so as to know the production reaction status in real time. Because the temperature at the bottom of the polymerization kettle plays a very important role in the reaction process, the batch polymerization reaction, the polymerization kettle often needs to rise and fall to change the temperature, resulting in obvious thermal expansion and contraction. At the end of each production cycle, the ...

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Problems solved by technology

[0003] The present invention solves the unplanned stoppage phenomenon easily caused by the leakage of the lower temperature measuring port in the production process of the existing polymerization kettle, which not only delays the production process, causes direct and indirect economic losses, but also causes unfavorable safety hazards to production management. An improved structure of the temperature measuring port under the polymerization kettle and a polymerization kettle adopting this structure are provided to avoid the occurrence of water leakage at the temperature measuring port under the polymerization kettle and to avoid the hidden dangers of production safety.

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