A cylindrical heating rod test section with a chamber and its parameter measurement method

Abstract

A cylindrical heating rod test section with a chamber and its parameter measurement method. The test section includes a fully developed tube, a lower chamber, a test section outer casing and an upper chamber connected by flanges in sequence, and is arranged on the test section outer casing. A cylindrical heating rod inside a tube. The pressure-taking channels and thermal resistors provided in the lower chamber and the upper chamber can be used to measure the pressure and temperature of the cooling water at the inlet and outlet of the inner channel. A pressure-taking channel and three water outlets evenly distributed at 90° are arranged on the side of the upper flange of the outer casing of the test section, and the connecting pipes of the water outlets are collected in the outer channel chamber. Measure the pressure and temperature of the cooling water at the outlet of the outer channel through the thermal resistors set in the pressure-taking channel of the outer casing of the test section and the outer channel chamber. The test section of the invention can simulate the heating of the cylindrical heating rod and accurately and reasonably measure the fluid parameters of the inner and outer channels, which solves the difficulties caused by the special inner and outer channel structure of the cylindrical heating rod, and at the same time avoids the large radial temperature gradient as a measurement zone. uncertainty, thereby improving the measurement accuracy.

Description

technical field [0001] The invention belongs to the technical field of industrial heating, and relates to a cylindrical heating rod test section with a chamber and a parameter measuring method thereof. [0002] technical background [0003] The cylindrical heating rod has the characteristics of double-sided heating, and the full contact with the large area of ​​the heating fluid can increase the heating power density by 20% to 50% on the premise of maintaining the existing temperature safety margin. Therefore, the cylindrical heating rod is A very safe and economical form of heating. However, its structure is more complex than that of traditional cylindrical heating rods. The size of the inner and outer channels affects the flow rate of the heating fluid and the distribution of heat. It is inevitable to study through thermal-hydraulic tests. However, the unique and complex structure of the cylindrical heating rod inside the tube brings difficulties to the measurement of test...

AI Technical Summary

Problems solved by technology

However, its structure is more complex than that of traditional cylindrical heating rods. The size of the inner and outer channels affects the flow rate of the heating fluid and the distribution of heat. It is inevitable to conduct research through thermal-hydraulic experiments.

The unique and complex structure of the cylindrical heating rod inside the tube brings difficulties to the measurement of test parameters

Based on this requirement, the present invention provides a cylindrical heating rod test section with a chamber and its parameter measurement method, the purpose of which is to solve the pressure and temperature measurement in the inner and outer channels of the cylindrical heating rod test section to study the circular heating rod test section. Problems of Heat Flow Distribution of Cylindrical Heating Rods

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