Pipe temperature measurement device
A technology for temperature measuring devices and pipelines, applied to measuring devices, electrical devices, thermometers, etc., can solve problems such as blowing damage and erosion of temperature sleeves, achieve the effect of preventing blowing damage and erosion, and improving the safety of use
Active Publication Date: 2020-06-26
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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Problems solved by technology
[0003] The purpose of the present invention is to provide a pipeline temperature measuring device to solve the technical problem of severe blowing damage and erosion of the temperature sleeve by steam in the prior art
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[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] Please also refer to Figure 1 to Figure 7 , the pipeline temperature measuring device provided by the present invention will now be described. The pipeline temperature measuring device includes a temperature sleeve 2 for communicating with the inner cavity of the pipeline 1, a thermocouple 3 arranged in the temperature sleeve 2, and a thermocouple 3 arranged on the outer periphery of the thermocouple 3 and distributed along the direction of the long axis of the thermocouple 3. A plurality of annular throttling pieces 4 are arranged at intervals between the...
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The invention provides a pipe temperature measuring device, which belongs to the field of thermodynamic measurement, and includes a temperature sleeve used to communicate with the inner cavity of the pipeline, a thermocouple arranged in the temperature sleeve, and a thermocouple arranged on the outer periphery of the thermocouple along the A plurality of annular throttling fins distributed in the long axis direction of the thermocouple, the outer wall of the throttling fin and the inner wall of the temperature sleeve are arranged at intervals, and the inner wall of the throttling fin and the outer wall of the thermocouple are arranged There are gaps. The pipe temperature measuring device provided by the present invention reduces the size of the casing-enclosed steam flow channel through the first-stage throttling, and at the same time cooperates with the double-throttling effect to gradually reduce the steam flow into the casing-enclosed steam flow path And reduce the steam parameters and blowing loss energy in the steam flow channel entering the closed space of the casing, thereby preventing the steam blowing damage and erosion of the inner wall of the temperature casing, and improving the safety of use.
Description
technical field [0001] The invention belongs to the technical field of thermal measurement, and more specifically relates to a pipe temperature measuring device. Background technique [0002] Thermocouple devices are generally used to measure steam temperature in thermal power plants. Thermocouple devices are installed on the pipes to be measured through temperature sleeves. The temperature sleeves are welded to the pipes in the form of fillet welds. The sleeves and pipes form a closed The connecting space of the thermocouple is exposed through the casing to the steam flow field in the pipeline to measure the steam temperature. During the operation of the unit, high-temperature and high-pressure steam flows in the pipeline, and the flow rate of superheated steam is generally 40-50m / s. Due to the existence of the casing, the high-speed flowing steam will continue to flow into the closed steam channel of the casing. One end of the flow channel is closed, and the steam will fo...
Claims
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IPC IPC(8): G01K7/06G01K1/08
CPCG01K1/08G01K7/06
Inventor 敬尚前董国振康永胜王庆李文彬徐雪霞李国维王勇
Owner STATE GRID HEBEI ELECTRIC POWER RES INST