Method for blocking holes of secondary cables in relay protection screen cabinet of substation

Abstract

The invention relates to a method for blocking holes of secondary cables in a relay protection screen cabinet of a substation. The method comprises the steps a, statistics, arranging and cable type recording are conducted on the cables in the relay protection cabinet of the substation; b, marking is conducted on a blocking foam board according to the cable type and positions; c, a special drill bit is adopted and used for drilling corresponding holes in the marked positions on the blocking board according to the cable type; d, the fixed-size blocking foam board is placed at the bottom of a protection screen, the four corners of the blocking foam board are provided with fixing screws, the blocking foam board and a protection screen base are fixedly connected, and when the blocking foam board can not be fixedly connected with the protection screen base, the blocking foam board is fixed with fireproof mud or fireproof sand bags; e, the cables penetrate through the corresponding holes, and the cables and seams between the drilled holes in the blocking foam board are sealed with the fireproof mud; and f, newly-added cables are drilled and blocked temporarily. The method can be used for blocking the secondary cables such as coupling boxes and protection screens in the substation, construction is easy, convenient and quick, fireproof performance is excellent, and secondary cables can be used within -160 DEG C-200 DEG C, and are free of toxicity and friendly to the environment.

Description

technical field [0001] The invention relates to the technical field of cable sealing, in particular to a method for sealing secondary cable holes in substation relay protection screen cabinets. Background technique [0002] At present, most of the secondary cable sealing in substation construction sites use fireproof mud or fireproof sandbags as cable sealing materials. Although fireproof mud has good sealing performance, its reutilization rate is low. Performance is poor. With the increase of the primary equipment of the substation, if the above two methods are used for secondary cable sealing, a large amount of manpower and material resources are required to complete. [0003] In technical transformation projects such as substation capacity expansion, reconstruction, and new construction, the primary equipment will increase, and the secondary equipment will also increase, and the related secondary cables will also increase. For example, to replace or install a new bus di...

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Problems solved by technology

[0003] In technical transformation projects such as substation capacity expansion, reconstruction, and new construction, the primary equipment will increase, and the secondary equipment will also increase, and the related secondary cables will also increase. For example, to replace or install a new bus differential protection, re-lay cables for each line distribution box, and the cable sealing completed before the distribution box will be destroyed, because most of the on-site cable sealing uses fire-proof mud and In the form of sandbags, after the cable is blocked and damaged, the reutilization rate of the fireproof mud is low, and the sealing performance of the fireproof sandbags on the cable threading holes is not high. If the fireproof mud or fireproof sandbags are used to block again, it will take a lot of time and human and material resources

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