Heat block device for reducing heat loss of experimental tube section in flowing heat exchange experiment

Abstract

The invention discloses a heat block device for reducing heat loss of an experimental tube section in a flowing heat exchange experiment. The heat block device comprises a heat block matrix, a plurality of heating rods, a plurality of thermocouples and electric wires, wherein the heat block matrix is of a cylindrical shape; the experimental tube section is arranged in the center of the heat block matrix; the electric wires are wound on the periphery of the heat block matrix; the plurality of heating rods are annularly and uniformly distributed in the heat block matrix; an upper graphite gasket is sleeved at one end of the experimental tube section; a lower graphite gasket is sleeved at the other end of the experimental tube section; the plurality of thermocouples are divided into a plurality of groups; and the plurality groups of thermocouples are arranged with different depths in the heat block matrix. The heat block device disclosed by the invention can be used for compensating the heat radiation loss of the experimental section to the environment, is beneficial to improving the experiment precision of a thermal insulation boundary condition experiment, and can further realize a secondary boundary condition for simulating the flowing heat exchange, thereby being applicable to a flowing heat exchange characteristic experiment.

Description

【Technical field】 [0001] The invention belongs to the technical field of experimental devices, and in particular relates to a thermal block device for performing heat compensation on an experimental section in a flow heat exchange experiment. 【Background technique】 [0002] In the flow heat transfer experiment, such as the flow characteristics experiment in the tube under the condition of wall surface insulation, the requirements for the insulation of the tube wall are often strict. In order to meet the requirements of the experimental conditions, the method of wrapping the insulation cotton outside the experimental section is generally adopted. But this method has a disadvantage, that is, if the thermal insulation conditions required by the experiment are met only by wrapping the thermal insulation cotton, the thickness of the thermal insulation cotton required is often ten times or hundreds of times the diameter of the test pipe section, and the use of thermal insulation c...

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Problems solved by technology

However, this invention is designed for industrial furnaces, and its structure is complex, which is suitable for application in industrial production. Moreover, this invention does not perform effective heat dissipation compensation. Therefore, for the insulation requirements of experimental pipe sections under laboratory conditions, this method is inappropriate

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