Cable field repair should pay attention to the problem

In the field laying process of the cable sheath surface scratch damage phenomenon is common, the damage is slight only hurt the sheath, how to repair to ensure the quality, and repair time is short, but also to ensure the quality has become a common concern of cable consumers. Moreover, the investment is small, and it is easy to achieve under the harsh conditions of the site, so the repair technology and quality of the site sheath are increasingly becoming the user's concern.

The on-site construction conditions of the cable are generally harsh, may be located in the initial construction of the power plant, may also be located in the preliminary construction of the field of new railway, may be on the bridge, may also be in the cable tunnel, because the repair of the field cable jacket are carried out by the plastic welding torch, and the heating of the plastic welding torch requires 220V AC, and is in the field of emerging construction. The site generally lacks power supply, or there may be power supply due to the random location of the site cable laying, which brings certain difficulties to the supply of power supply, so to achieve the repair of the cable sheath, on the one hand, the personnel are in place, on the other hand, the supply of power supply, only the above two basic preparations are made. Only in this way can the repair work of cable sheath be carried out normally.

In order to facilitate the smooth progress of cable repair work, the construction unit should be equipped with field small generators. At the same time, the convenience of on-site repair is now provided with plastic welding guns of excellent quality. The heating area of the nozzle should be large, and the heating speed should be fast. In general cities and plain areas, this work is better to carry out, but in some mountainous areas, due to the impact of complex terrain, cable repair work is actually very difficult. Therefore, to reduce the investment in the corresponding aspects and quickly solve the problem, a very key problem is that the number of personnel in the cable laying process must be sufficient, and the use of regular cable professional laying equipment for formal pay-off, to avoid and reduce the phenomenon of sheath damage in the process of cable pay-off.

The technology required for on-site repair of the cable is not very high, and the cable laying construction unit must repair the cable after the cable is damaged, under the premise of confirming that the cable is not damaged inside, and then repair the cable, otherwise the practical significance of cable sheath repair is not great. The repair of the cable must be timely, otherwise the entry of external moisture and moisture for a long time will affect the service life of the cable. In the southern Meiyu weather, after the cable end is laid, the end of the cable is not sealed in time, resulting in the water flowing into the cable trench into the cable fracture 10-20 meters, stripping the insulation of the opening head and finding that the conductors have been all black, resulting in a waste of the cable after laying. Therefore, the cable is laid to strengthen the corresponding inspection. Maintain and store to prevent the cable from shortening and ending its life due to various external factors on site before it is powered on.