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A high-power electric heating rod used under high temperature and high pressure using optical fiber temperature measurement

A high-temperature, high-pressure, electric heating rod technology, applied in the direction of ohmic resistance heating parts, heat measurement, heating elements, etc., can solve the problem of temperature measurement accuracy and response speed decline, the limitation of the central aperture of the lining ceramic tube, manufacturing, processing and use Difficulty and other issues, to achieve the effect of small spacing, complete overall shape and stable performance

Active Publication Date: 2022-02-11
NUCLEAR POWER INSTITUTE OF CHINA
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  • Description
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Problems solved by technology

But first of all, in order to ensure its stable operation under high temperature and high conditions, the central aperture of its lining ceramic tube is relatively limited, resulting in a small number of thermocouples it can accommodate, so it can only measure the temperature of a few places on the wall; Secondly, the thermocouple and the wall of the heating pipe are separated by ceramics, which leads to a significant decrease in the accuracy and response speed of its temperature measurement; thirdly, the complex structure of the heating element brings great difficulties to its manufacture, processing and use

Method used

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  • A high-power electric heating rod used under high temperature and high pressure using optical fiber temperature measurement
  • A high-power electric heating rod used under high temperature and high pressure using optical fiber temperature measurement
  • A high-power electric heating rod used under high temperature and high pressure using optical fiber temperature measurement

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Embodiment

[0046] The invention is very suitable for high-power direct electric heating rods used under high-temperature and high-pressure conditions that require continuous monitoring of wall surface temperature. This embodiment describes the process of assembling and using a single electric heating rod. The specific process is as follows: (1) According to figure 2 and the internal diameter of the heating tube to determine the size of each part of the positioning ring 3, and complete the processing and assembly; (2) determine the length of the filled ceramic 5 and the quantity and arrangement of the filled ceramic 5 and the positioning ring 3 according to the length of the heating tube 2; (3) use the positioning The wire 4 connects the arranged filling ceramics 5 and the positioning ring 3 in series to form a whole and determines that the reserved optical fiber groove of the filling ceramics 5 is consistent with the circumferential position of the optical fiber perforation 3-5-3 of the...

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Abstract

The invention discloses a high-power electric heating rod used under high temperature and high pressure using optical fiber to measure temperature. The material selection and structural design of each part of the electric heating rod take into account the requirements of electrical conductivity, high temperature strength, withstand voltage capability, and insulation performance between components, which can realize continuous measurement of wall temperature and ensure the accuracy of wall temperature signal measurement. The response speed can be used stably under high temperature and high pressure conditions, and it is easy to manufacture and use.

Description

technical field [0001] The invention belongs to the technical field of electric heating rods, and in particular relates to a high-power electric heating rod used under high temperature and high pressure using optical fiber temperature measurement. Background technique [0002] An electric heating rod is a device that converts electrical energy into heat energy after being energized. In reactor engineering experimental research, high-power electric heating rods are often used to simulate reactor fuel elements to study the flow and heat transfer characteristics of the reactor core, and provide key experimental data for reactor design and safety analysis. In order to truly simulate the operating environment of the reactor and obtain key experimental parameters, it is required that the electric heating rod can operate stably under high temperature and high pressure conditions, and at the same time have the function of measuring the wall temperature. [0003] For example, a util...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/42H05B3/06G01K11/32
CPCH05B3/42H05B3/06G01K11/32
Inventor 仇子铖赵大卫刘文兴昝元锋李朋洲
Owner NUCLEAR POWER INSTITUTE OF CHINA
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