Cylindrical heating rod test section with chamber and parameter measurement method thereof

Abstract

The invention relates to a cylindrical heating rod test section with a chamber and a parameter measurement method thereof. The test section comprises a full development pipe, a lower chamber, a test section outer sleeve, an upper chamber and a cylindrical heating rod arranged in the test section outer sleeve, wherein the full development pipe, the lower chamber, the test section outer sleeve and the upper chamber are sequentially connected by flanges. The pressure tapping channels and the thermal resistors arranged in the lower chamber and the upper chamber can be used for measuring the pressure and temperature of cooling water at the inlet and the outlet of the inner channel. A pressure tapping channel and three water outlets which are uniformly distributed at an angle of 90 degrees are formed in the side edge of the upper flange of the test section outer sleeve, and the water outlets are connected with a pipeline and converged in the outer channel chamber. The pressure and temperature of cooling water at the outlet of the outer channel are measured through the test section outer sleeve pressure tapping channel and a thermal resistor arranged in the outer channel chamber. The testsection can simulate heating of the cylindrical heating rod and accurately and reasonably measure fluid parameters of the inner channel and the outer channel; the difficulty caused by a special innerchannel structure and a special outer channel structure of the cylindrical heating rod is solved; and meanwhile, uncertainty caused by large radial temperature gradient to measurement is avoided, andtherefore the measurement accuracy is improved.

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 experiments. However, the unique and complex structure of the cylindrical heating rod inside the tube brings difficulties to the measurement o...

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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