Turnover pile top cable bridge fixed on civil engineering platform

Abstract

The invention belongs to an integral reactor pile top structure, and particularly relates to a turnover pile top cable bridge fixed on a civil engineering platform. A supporting seat is anchored in the civil engineering platform; one end of the cable bridge is movably connected with the supporting seat, and a turnover angle is larger than or equal to 90 degrees; a support frame is arranged above the cable bridge, and is formed by a framework structure and a pull rod; one side of the framework structure is connected with the upper part of the cable bridge; the other side of the framework structure is connected with the pull rod; a fixed seat is anchored in the civil engineering platform, and is located on the outer side of the supporting seat; two support legs are arranged on the other end of the cable bridge; a cable connecting plate is arranged above the reactor pile top structure; when the cable bridge is put horizontally, the support legs are supported above the reactor pile top structure; when the cable bridge is turned over to a vertical position, the pull rod is connected with the fixed seat. According to the integral reactor pile top structure, the axial dimension and the radial dimension of the pile top structure are reduced, the operation steps and the operation time of the pile top structure are reduced, and the economical efficiency and the safety of the reaction pile are improved.

Description

technical field [0001] The invention belongs to the top structure of an integrated reactor, and in particular relates to a top cable bridge fixed on a civil engineering platform and capable of turning over the top structure for guiding and fixing the top cables. Background technique [0002] The integrated reactor roof structure is located on the reactor pressure vessel, and is mainly composed of the pressure vessel roof, control rod drive mechanism (CRDM), CRDM anti-seismic support device, roof spreader, reactor roof cable bracket and cable bridge, etc. [0003] Various cables such as CRDM power cables and measurement cables, in-pile measurement cables, vibration detection cables, etc. are installed above the pile top structure. The cable tray on the top of the pile is just a bridge between the top of the pile and the civil construction platform, and it plays the role of fixing and guiding the cables on the top of the pile to the civil construction platform. [0004] When ...

AI Technical Summary

Problems solved by technology

[0006] However, due to the large size of the cable bridge, after this method is turned over, the following problems will mainly be brought about: in the direction of the reactor axis, the height of the cable bridge is relatively high when it is vertical, which will increase the height of the reactor roof structure, and give rise to the top cover spreader, The hoisting of the reactor roof structure and the height of the reactor containment bring pressure; in the radial direction, the radial dimension above the reactor roof structure is increased, which affects the use of the subsequent overall bolt tensioning machine and the impact on the roof spreader. The ring gauge of the split bolt tensioning machine is affected, that is, the top cover spreader needs to be removed before the cable bridge is turned over, and the spreader is installed on the pile top structure after the cable bridge is turned over, which increases the operating time and does not Conducive to the economics and safety of the reactor

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