A high-efficiency in-situ thermoplastic molding construction process
A technology of thermoplastic molding and construction technology, which is applied in the field of in-situ thermoplastic molding construction technology, can solve problems such as slow process, and achieve the effect of improving construction efficiency and shortening construction time
Active Publication Date: 2021-03-19
上海乐通管道工程有限公司
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Problems solved by technology
[0011] But this process is usually very slow. As the length of the pipe increases, one end will enter the air. If the temperature reaches the curing temperature, it will usually take a long time for the other end to reach the curing temperature, and it will take a long time for the other end to complete the curing.
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[0026] The invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Such as Figure 1-3 As shown, a high-efficiency in-situ thermoplastic molding construction process includes the following steps:
[0028] 1) Hose laying: Lay the cushion film, pull the inner liner 100 into the original pipe, and extend the two ends of the original pipe. The inner liner 100 includes the inner light curing layer 120 and the outer heat curing layer 110 ; The fiber net is fixed in the thermosetting layer 110, and the fiber net is made of composite fibers braided or wound, the composite fibers contain metal wires, the volume ratio is 20%-40%, and the metal wires are made of copper;
[0029] 2) Illumination curing: Inflate the inner liner 100 into a circular tube shape, irradiate with ultraviolet light to cure the light curing layer 120, and the ultraviolet irradiating equipment includes an elastic shaft 60, which is made of rubber or spring, and its cente...
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Abstract
The invention provides a high-efficiency in-situ thermoforming construction process. The process comprises the following steps of 1), laying a hose, specifically, laying a cushion film, drawing a liner pipe into an original pipe, extending the two ends of the liner pipe out of the original pipe, wherein the liner pipe comprises an inner-layer light-cured layer and an outer-layer heat-cured layer;2), carrying out lighting curing, specifically, inflating the liner pipe into a circular pipe shape, irradiating the liner pipe by ultraviolet light, and curing the light-cured layer of the liner pipe; and 3), finally curing, specifically, introducing hot air into the liner pipe by using hot air equipment, and curing the heat-cured layer. According to the process, through distributed curing, hot spots of two curing modes can be overcome, the working efficiency is improved, and the construction time is shortened.
Description
technical field [0001] The invention relates to an in-situ thermoplastic forming construction process for pipeline repair, in particular to an in-situ thermoplastic forming construction process capable of shortening the construction period. Background technique [0002] The biggest feature of in-situ thermoplastic forming pipeline repair technology is the high degree of factory prefabrication. Similar to the traditional pipeline buried by excavation, the properties of the liner, including material mechanical parameters, chemical anti-corrosion parameters, pipe wall thickness, etc., are all determined on the strictly controlled factory assembly line. Change the shape of the produced pipe (make it close to the inner wall of the pipeline to be repaired), without causing any material shape change, and without changing the mechanical parameters of the pipe. Thereby greatly improving the engineering quality of trenchless pipeline repair. [0003] The construction process include...
Claims
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IPC IPC(8): B29C73/04B29C73/34
CPCB29C73/04B29C73/34
Inventor 刘清波
Owner 上海乐通管道工程有限公司