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Cable Tray Installation Problem And Its Solution
- May 24, 2017 -

Cable tray path installation work is the most cumbersome and important process in the installation of nuclear power plant electrical installation, the combination of materials involved in hundreds, so the technical preparation staff and installation personnel installation skills will directly affect the construction of nuclear power construction progress and quality. Therefore, I combined with years of participation in the nuclear power plant cable tray installation process encountered some of the actual situation, summed up some of the electrical tray installation process problems and solutions.

Tray elbow prefabricated size and calculation

  Elbow prefabricated angle can not meet the tray elevation or change the angle of the path requirements.

  During the installation of the cable tray, the main reason for this problem is due to the fact that the on-site installation workers are recruited by technical schools or social recruits, etc., due to the lack of skill in the installation of the workers. Less learning in the process of such installation work, usually social recruitment workers will only produce some simple water and electricity lines and pipelines. Solution: In the process of installation of the tray, especially the Taishan nuclear power plant tray specifications, including 100 side high × 100 wide (200 wide, 300 wide, 400 wide, 500 wide, 600 wide); 50 side high × 50 wide , 50 sides high × 100 wide; climbing tray section need to use to all types of elbow, but also because there are many unavoidable surrounding environment to the elbow processing and installation caused difficulties, so also on the processing All kinds of different specifications tray angle has a higher demand. Therefore, according to the actual situation of the scene, designed a suitable for a variety of elbow production processing methods, the elbow processing method does not require the amount of pallet climbing degree, only a simple measurement tool - ruler or tape.

   Cable Tray M is the vertical height of the climbing section of the pallet (ie, the elevation of the upper and lower pallets is the measuring datum), n is the horizontal distance of the climbing section, L is the actual length of the climbing section pallet, and the pallet climbing degree is α. This is the side view of the pallet climbing section, where h is the edge height of the pallet, which varies according to the different type of tray. Z is the tangential length of the tray, which corresponds to the h in Figure 1; the cut-out of the cut- The angle is α = α / 2 + α / 2.