Double-hole parallel thermal power tube

Abstract

The invention relates to a double-hole parallel thermal power tube, relates to thermal power tube network projects, and in particular relates to a tube and fittings of a thermal power tube network. According to the double-hole parallel thermal power tube, a partition plate is arranged in the middle of an elliptic tube wall of the cross section of the double-hole parallel thermal power tube, and then two horizontally parallel tube holes are formed; a heat-preservation layer is arranged on the outer side of the double-hole parallel thermal power tube; the cross section areas of the two tube holes are identical; the two tube holes are respectively used as a water supply tube and a water return tube of a thermal power tube network. On premise that the cross section areas of the tube holes are identical to those of round tubes of a same nominal diameter and the cross section areas of the water supply tube and the water return tube are ensured, the pipeline laying width is reduced, the underground space is saved, underground pipelines can be laid conveniently, the volume of earthwork of troughs is reduced, and the workload of pipeline hoisting and positioning is also reduced when being compared with that of the prior art; the outer surface area of the tube wall is smaller than those of two tubes of the prior art, so that thermal energy consumption can be effectively reduced, and the energy can be saved; the steel consumption of steel tube sections and outer heat-preservation layers is less than that of double tubes of the prior art, and materials can be saved.

Description

technical field [0001] The invention relates to a double-hole parallel heat pipe, relates to heat pipe network engineering, in particular to a pipe material and fittings of the heat pipe network. Background technique [0002] The media used in the urban heat pipe network mainly include steam and hot water. "Code for Design of Urban Heating Pipeline Network" (CJJ34-2010) stipulates that "when the heat load of the production process is the main load and steam must be used for heating, steam should be used as the heating medium; when water is used as the heating medium can When meeting the needs of the production process (including conversion to steam at the user's site), and when the technology and economy are reasonable, water should be used as the heating medium." In the prior art, hot water is the main medium of the heat pipe network used for urban heating, ventilation, and air-conditioning heat load. After heat exchange, send it back to the thermal power plant or regiona...

AI Technical Summary

Problems solved by technology

[0004] The medium temperature of the heat pipe is high. In order to reduce heat loss, an insulation layer needs to be installed. The thickness of the insulation layer is calculated according to the temperature of the medium in the pipe network and the ambient temperature. The greater the temperature difference between the two, the thicker the insulation layer is. layer, the greater the temperature difference between the medium and the environment, the greater the heat loss; the larger the surface area of ​​the pipe, the greater the heat loss, and the larger the surface area of ​​the double pipe, the greater the corresponding heat loss

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