Method for solving heat generation problem of cable concentration area in high-voltage cable tunnel
A technology for high-voltage cables and tunnel cables, which is applied in the field of solving heating problems in concentrated areas of high-voltage cable tunnels and cables, and can solve problems such as cable insulation aging and fires
Active Publication Date: 2014-05-28
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: how to solve the problem that the high temperature in the cable concentration area of the high-voltage cable tunnel is likely to cause the aging of the cable insulation, and even the problem of fire
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[0014] Such as figure 1 As shown, fire isolation walls are built at both ends of the cable concentration area of the high-voltage cable tunnel, and the high-voltage cables are installed separately. The overhead device is a support made of insulators on the overhead device; ventilation shafts are established at both ends of the high-voltage cable tunnel cable concentration area The ventilation shaft is close to the fire isolation wall. The ventilation shaft is divided into an air inlet shaft and an air outlet shaft. The inlet of the air inlet shaft is equipped with a supply air fan, and an induced air fan is installed at the outlet of the air shaft; in the high-voltage cable tunnel cable concentrated area Multiple guide fans are installed on the top. The outside wind enters the high-voltage cable tunnel cable concentration area through the air supply fan from the air inlet, and the wind outlet is discharged through the induced draft fan through the multiple guide fans installe...
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The invention relates to the field of safe power utilization, and particularly relates to a method for solving the heat generation problem of a cable concentration area in a high-voltage cable tunnel. The method comprises the following steps: building a fireproof separating wall at each of the two ends of the cable concentration area in the high-voltage cable tunnel; arranging high-voltage cables on an overhead device in a scattered way; building a ventilation shaft in each of the two ends of the cable concentration area in the high-voltage cable tunnel, wherein the ventilation shafts are close to the fireproof separating walls; and arranging a plurality of guide fans at the top of the cable concentration area in the high-voltage cable tunnel. By virtue of the method, the problem of over-high temperature of the cable concentration area in the high-voltage cable tunnel is solved; after the use of the method, the temperature of the cable concentration area is below 25 DEG C in summer and below 10 DEG C in winter.
Description
Technical field [0001] The invention relates to the field of safe electricity use, in particular to a method for solving the problem of heat generation in a high-voltage cable tunnel cable concentrated area. Background technique [0002] The 110KV Ximen Road cable tunnel of Shanxi Taigang Stainless Steel Co., Ltd. has a section of the cable intensive area from the substation to the load area. The 10KV and 35KV load cables from the three substations and the 110KV and 220KV power cables from the three substations have a length of 50 The temperature in the tunnel is above 50 degrees in summer and 45 degrees in winter due to the concentrated heating of cables in this area. The temperature of the cable body is also above 60 degrees due to the high ambient temperature. Long-term operation will inevitably cause the cable insulation to age , A serious fire accident occurred, causing power outages in multiple substations, causing huge economic losses to the production of enterprises. [00...
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IPC IPC(8): H02G9/08
Inventor 李建廷
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD