Buried pipeline temperature measuring method

Abstract

The invention discloses a buried pipeline temperature measuring method, and belongs to the technical field of oil and gas pipeline temperature measurement. The method comprises the following steps: a threaded boss is fixed to a buried pipeline, and the threaded boss is in threaded connection with a thermometer outer protective sleeve; one end of a mounting bracket is fixed to the ground, and a plug-in thermometer is fixed to the other end of the mounting bracket; a cable trench box is fixed to the mounting bracket; one end of a capillary is connected with the plug-in thermometer, and the other end passes through the cable trench box to be connected with the thermometer outer protective sleeve; a protective steel pipe is arranged outside the plug-in thermometer, and the capillary, the threaded boss and the thermometer outer protective sleeve are disposed in the protective steel pipe; one end of the protective steel pipe is fixedly connected with the buried pipeline, and the other end is equipped with a sealing block; and the plug-in thermometer carries out real-time detection through a temperature sensor inserted into the buried pipeline so as to realize in-situ temperature display and remote transmission. The buried pipeline temperature measuring method of the invention has the advantages of high accuracy of buried pipeline temperature measurement, high stability, investment saving, and easy operation and maintenance.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline temperature measurement, in particular to a buried pipeline temperature measurement method. Background technique [0002] For the temperature measurement of buried pipelines, previous projects have adopted the method of raising buried pipelines to the ground to install temperature measuring instruments and then burying them or setting instrument wells at the pipelines where temperature measuring instruments need to be installed, and installing instruments in wells. [0003] The method of raising the pipeline to the ground to install the temperature measuring instrument has the advantage of convenient installation and maintenance, but the measurement accuracy is reduced due to the change of the flow state of the elbow and the elbow, and the cost is increased; in addition, due to the There is increased pipeline stress, causing certain safety hazards to pipelines. The advantage of setti...

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Problems solved by technology

[0004] In order to solve the problems of low measurement accuracy, high construction and maintenance costs, poor safety or stability existing in the existing buried pipeline temperature measurement method, the present invention provides a buried pipeline temperature measurement method, which consists of a plug-in thermometer, a capillary tube , thermometer outer protective casing, threaded boss, protective steel pipe, sealing block, mounting bracket and cable box, specifically including: fixing the threaded boss on the buried pipeline, the threaded boss and the outer surface of the thermometer The protective casing is connected by threads; one end of the mounting bracket is fixed on the ground, and the other end is fixed with the plug-in thermometer; the cable box is fixed on the mounting bracket; one end of the capillary is connected to the plug-in thermometer The other end is connected to the outer protective sleeve of the thermometer after passing through the cable trough box; the protective steel pipe is set outside the plug-in thermometer, and the capillary, threaded boss and outer protective sleeve of the thermometer are located on the In the protective steel pipe; one end of the protective steel pipe is fixedly connected with the buried pipeline, and the other end is installed with the sealing block; the inserted thermometer is detected in real time by a temperature sensor inserted into the buried pipeline to realize the on-site temperature Display and remote transmission

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