A field interface method for plastic-sheathed steel hot water pipes in low-temperature environments
A low temperature environment, hot water pipeline technology, applied in the direction of heat insulation protection pipeline, pipeline protection, non-detachable pipe connection, etc., can solve the problems that affect the quality of equipment and pipeline insulation effect, construction quality can not be guaranteed, etc., to achieve insulation efficiency and Improve equipment safety, avoid cracking accidents, and ensure the effect of enlightening temperature
Active Publication Date: 2017-06-16
山东鼎超供热设备有限公司
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Problems solved by technology
However, when the ambient temperature is low in winter construction, the existing conventional operation is not conducive to the heuristic reaction of polyurethane insulation materials, resulting in the consequence that the construction quality cannot be guaranteed, and ultimately affects the quality of equipment and the insulation effect of pipelines after commissioning
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[0026] Accompanying drawing is the specific embodiment of the present invention. Such as Figure 1 to Figure 2 As shown, the on-site interface method of the plastic-sheathed steel hot water pipe in a low-temperature environment includes the following steps:
[0027] 1) Add an automatic temperature control heating device 1 to the injection pipe 9 of the composite material A tank and the composite material B tank;
[0028] 2) After the flaw detection of the steel pipe butt weld 5 is completed, derust the steel pipe part in the on-site patching and heat preservation melting chamber 4;
[0029] 3) Start the automatic temperature control heating device 1 of the material pipe, adjust the automatic temperature control temperature, preheat the injection pipe 9 of the composite material A tank and the composite material B tank, and use the inherent characteristics of the composite material A tank and the composite material B tank. The heating device preheats the A component in the co...
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The invention relates to the field of municipal facilities, and particularly discloses a field connection method of a plastic steel hot water pipeline in a low-temperature environment. The field connection method comprises the steps of preheating, derusting, wrapping, packaging, heating, injecting materials and removing. According to the field connection method, the construction problem of a pipeline joint in the low-temperature environment in winter is solved, the initiation temperature and the initiation quality of pipeline insulation materials are guaranteed, and the pipeline operation effect is guaranteed. Compared with a traditional insulation repaired mouth, the problem of loss or reduction of the insulation effect due to low initiation temperature in the low-temperature environment is solved, and additionally, a cracking accident caused by rapid cooling of a hot melt sleeve is avoided by using an insulation quilt. According to the design of the field connection method, the whole insulation effect and the safety of equipment are increased, and the effect is obvious.
Description
[0001] (1) Technical field [0002] The invention relates to the field of municipal facilities, in particular to an on-site interface method for plastic-sheathed steel hot water pipes in a low-temperature environment. [0003] (2) Background technology [0004] At present, the on-site construction of rigid polyurethane foam prefabricated direct-buried insulation pipes for high-density polyethylene outer protection pipes is done after the working steel pipes have been welded and passed the flaw detection, and then the steel pipes at the joints are derusted, welded with hot-melt sleeves, and sealed with heat-shrinking tape. , and then fill the polyurethane composite material until the inspiration is completed. Since the reasonable temperature range for the inspiration of the polyurethane composite material is 25±5°C, when the ambient temperature is above 20°C, the filling and inspiration of the polyurethane insulation material can be better completed. However, during constructio...
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IPC IPC(8): F16L13/02F16L59/02
CPCF16L13/02F16L59/02
Inventor 王明海马元安
Owner 山东鼎超供热设备有限公司