Method for butting buried cable steel tube on site during construction
A technology for steel pipes and cables, which is applied in the field of connection between cable steel pipes, can solve problems affecting the construction period and quality of cable laying, burrs at the nozzles of cable steel pipes, and the inability of cables to pass through, etc., so as to achieve simple and practical production process, guarantee efficiency and quality , The effect of facilitating on-site construction
Inactive Publication Date: 2010-09-15
CHINA FIRST METALLURGICAL GROUP
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Problems solved by technology
At this time, the installation quality of the direct-buried cable pipe directly affects the construction period and quality of the cable laying, and the installation of the cable pipe is most affected by the dislocation of the nozzle and the burr of the nozzle, which may easily cause the cable to fail to pass through or scratch the insulation layer.
At present, there is no simple and easy method to carry out on-site docking of directly buried cable steel pipes
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[0021] In order to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the embodiments and accompanying drawings, see Fig. 1 to Fig. 3:
[0022] According to the present invention, the bushing used for butt jointing of directly buried cable steel pipes includes a butt joint sleeve 5. In order to make the butt joint sleeve 5 fit smoothly outside the cable steel pipe 6, the pipe diameter of the butt joint sleeve 5 needs to be enlarged. , the method is to make a wedge-shaped reaming pipe 2 for diameter expansion on the spot earlier. The production process of the wedge-shaped reaming pipe 2 is as follows: use a cutting machine to cut a section of steel pipe of the same material as the cable steel pipe 6, symmetrically cut out three or four triangular openings on the side wall of the nozzle at one end, reduce the size and weld to make the wedge-shaped pipe 1, Three or four steel bars with a dia...
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The invention relates to the technical field of electric engineering construction, in particular to a method for butting a buried cable steel tube on site during construction. The method comprises the following steps of: (1) manufacturing a wedge-shaped chambering tube; (b) wedging the wedge-shaped chambering tube into a ring opening tube to expand the tube diameter of the ring opening tube, and welding fixed diameter steel bars to side walls on two sides of the opening of the ring opening tube to form a butting sleeve; (c) sleeving the tube ends of two polished cable steel tubes into the butting sleeve, and cutting off the fixed diameter steel bars on the butting sleeve; (d) totally fitting the tube orifices of the cable steel tubes, fixing the cable steel tubes by spot welding, and then tightly welding each connector; and (e) polishing the welding slag at the welded part, and coating anti-rusting paint on the cable steel tubes so as to finish butting the cable steel tubes. By using the method, materials are taken from the construction site, no extra material is needed, the manufacturing process is simple and practical, on-site construction is convenient, the construction cost is saved, the butting misalignment and burrs of the tube orifices can be reduced, and the efficiency and quality of paving cables are guaranteed.
Description
technical field [0001] The invention relates to the technical field of electrical engineering construction, in particular to a method for connecting cable steel pipes in long-distance direct-buried cable pipe trenches, which is easy to implement on site during construction. Background technique [0002] In the electrical equipment installation project, due to the requirements of the on-site environmental conditions, many electrical pipe fittings are directly buried underground according to the design. For example, when laying cables, sometimes it is necessary to meet the power distribution requirements of the system through long-distance direct buried cable trenches. At this time, the installation quality of the direct-buried cable pipe directly affects the construction period and quality of the cable laying, and the installation of the cable pipe is most affected by the dislocation of the nozzle and the burr of the nozzle, which may easily cause the cable to fail to pass th...
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IPC IPC(8): F16L21/00H02G9/06
Inventor 李德家张晓峰胡太松冯佑波季华峰
Owner CHINA FIRST METALLURGICAL GROUP
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