Fastening structure suitable for movable floating nuclear power plant platforms

Abstract

The invention discloses a fastening structure suitable for movable floating nuclear power plant platforms. The fastening structure comprises bolt column bodies, the platforms connected through the bolt column bodies and two nuts matched with the bolt column bodies; a plurality of small bolt holes are evenly formed in each nut, and the two adjacent nuts are connected in the mode that small bolts are installed in the small bolt holes. According to the actual sea condition characteristics, an existing fastening structure is improved; according to the bolt screwing principle, the multiple small bolt holes are formed in the end face of each nut, the structure mode that the small bolts are arranged is used, and the multiple small bolt holes are formed to reduce the weight of the main nuts; meanwhile, the small bolts are evenly distributed so that fixation between the nuts can be scattered to the end faces of the nuts, the contact area between the two nuts is accordingly increased, the mutual stress area is increased, the possibility of looseness between the nuts is greatly reduced, and the overall sealing performance of the bolts is improved.

Description

technical field [0001] The invention relates to the field of offshore floating nuclear power plants, in particular to a fastening structure suitable for a movable floating nuclear power plant platform. Background technique [0002] Floating nuclear power plants can be used for power generation, seawater desalination, heating, and can meet the special needs of regional power supply, district heating, offshore oil exploitation, chemical industry, polar or remote areas, and isolated islands. As far as my country is concerned, floating nuclear power plants can meet the large-scale energy demand of islands and oil drilling platforms far away from the mainland, and provide abundant energy for the development of coastal islands and deep-sea oil and gas development in my country in terms of power supply and seawater desalination. It can be used as a military small nuclear power source in military bases and islands. At present, there are no offshore nuclear power plants in service or...

AI Technical Summary

Problems solved by technology

In addition, the size of the general offshore platform is more than 300M, and the height of the steel containment is more than 30M. Due to the huge size and weight of the platform and the steel containment, and the requirements of the installation specifications, it is necessary to use super-sized fastening bolts to connect, and the general length is more than 3 meters. The weight of fastening bolts with a diameter of 0.5 meters will reach about 2 tons. Due to the weight, it will be very inconvenient to install screws at sea

[0004] However, the currently designed bolt fastening method has many defects in the actual experimental use process: offshore installation is not as convenient as onshore, which limits the size of the bolts, in addition, the fatigue and aging of the bolts, the continuous impact of seawater and the generation of fluid media during reactor operation The continuous vibration of the platform, etc., will produce continuous vibration to the platform, which will cause the screws to loosen, affect the fastening effect of the bolts, and finally affect the fixing of the reactor steel containment vessel and the platform

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