Thermal pipeline hot air heating pre-stretching device and method
A technology for hot air heating and thermal pipelines, which is applied in pipeline heating/cooling, pipeline laying and maintenance, pipes/pipe joints/pipe fittings, etc. It can solve problems such as long preheating time, restricted application, and self-weight effects, and achieve fast heating speed. , the effect of convenient operation and low cost
Active Publication Date: 2018-08-14
CHINA 22MCC GROUP CORP
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Problems solved by technology
[0004] Non-compensated preheating direct burial is a laying method with high reliability and low cost. At present, water is generally used as the medium for preheating in engineering applications. Due to the limitation of the thermophysical properties of water, in preheating, especially for large diameter The heating pipeline has disadvantages such as too long preheating time and the influence of water self-weight on thermal expansion, which to a certain extent also restricts the application of this laying method in engineering
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[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but the present embodiments do not constitute any limitation to the present invention.
[0019] see figure 1 , a thermal pipeline hot air heating pre-stretching device, which is composed of a hot air circulation system formed by connecting a heating main machine 3, a water supply pipeline 1, a heating auxiliary machine 4, and a return water pipeline 2 in sequence, and the water supply pipeline 1 and the return water pipeline 2 are respectively Placed in the excavated pre-buried trench, the head end of the water supply pipeline 1 and the tail end of the return water pipeline 2 are installed with a heating host 3, and the heating host 3 is equipped with a main heater 5 and an auxiliary heater 6, and the water supply The first end of the pipe 1 is connected to the fan outlet of the heating main machine 3, and the tail end of the return water pipe 2 is conn...
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The invention relates to a hot air heating prestretching device and method of a heat distribution pipeline. A water supply pipeline and a water returning pipeline are arranged in an excavated embedded groove, the head end of the water supply pipeline and the tail end of the water returning pipeline are provided with a heating host, the heating host is provided with a main heater and an auxiliary heater, the head end of the water supply pipeline is connected with a draught fan outlet of the heating host, the tail end of the water returning pipeline is connected with an air bellow of the heating host; the tail end of the water supply pipeline and the head end of the water returning pipeline are provided with a heating auxiliary machine which is provided with a heater, the tail end of the water supply pipeline is connected with an air bellow of the heating auxiliary machine, the head end of the water returning pipeline is connected with a draught fan outlet of the heating auxiliary machine, the head end of the water supply pipeline and the head end of the water returning pipeline are each provided with an air inlet temperature probe, and the tail end of the water supply pipeline and the tail end of the water returning pipeline are each provided with an air outlet temperature probe. The problems that the water heating time is too long, and heat expansion is affected due to the dead load of water are solved, water resources are saved, construction is easy, running is convenient, the heating speed is high, controllability is high, and the device is environment-friendly and free of pollution.
Description
technical field [0001] The invention relates to a thermal pipeline non-compensated preheating direct burial construction method, in particular to a thermal pipeline hot air heating pre-stretching device and method. Background technique [0002] During the operation of the heating pipe network, the hot water pipes will be elongated under the influence of the heat medium. If no effective compensation is made, the stress on the pipes will increase. When it reaches a certain level, rupture will occur. The common method of pipe compensation is on the pipes. The installation of pipeline compensators is called pipeline compensation laying. [0003] Non-compensated preheating direct burial compensates the deformation of the pipelines on both sides under the design temperature difference, so that the tensile stress and compressive stress of the pipelines are basically equal under normal working conditions, so as to effectively reduce the deformation stress of the pipelines; When the...
Claims
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IPC IPC(8): F16L1/06F16L53/32
CPCF16L1/06F16L53/30
Inventor 张甲立张丽王艳伶徐升乾何彬
Owner CHINA 22MCC GROUP CORP