Derusting device for support column of offshore drilling platform

Abstract

The invention discloses a support column derusting device of an offshore drilling platform, which comprises a drilling platform and a plurality of support columns. An electric telescopic rod is installed at the lower end of the drilling platform, and a device block is fixed at the telescopic end of the electric telescopic rod. The device block is sleeved on the supporting column, and the side wall of the device block is provided with a device port, and a push wave board is placed in the device port, and a resisting rod is fixed on the rear side of the push wave board, and the two sides of the device block There is a cavity inside, and the end of the rod extends into the cavity and is fixedly connected with a piston. The piston divides the cavity into an air cavity and a paint cavity. The side wall of the piston and the inner wall of the air cavity pass through the first A spring is elastically connected, and the lower end of the device block is provided with an annular groove, and an annular folded air bag is installed in the annular groove. The invention has a reasonable structure, can use sea waves to automatically carry out derusting operations on the supporting columns, is safer, and can automatically spray antirust paint.

Description

technical field [0001] The invention relates to the technical field of offshore drilling platforms, in particular to a rust removal device for support columns of offshore drilling platforms. Background technique [0002] An offshore drilling platform is an offshore structure mainly used for drilling wells. Top-mounted drilling, power, communication, navigation and other equipment, as well as safety and lifesaving and personnel living facilities. The indispensable means of offshore oil and gas exploration and development mainly include jack-up and semi-submersible drilling platforms. [0003] The support column of the offshore drilling platform is eroded by seawater. Even if it is coated with anti-rust paint, rust will still appear on the outer wall after a period of use. If it is not cleaned in time, the rust will gradually expand and corrode the inside, causing serious consequences . At present, it is necessary to manually go down to the bottom of the drilling platform f...

AI Technical Summary

Problems solved by technology

[0003] The support column of the offshore drilling platform is eroded by seawater. Even if it is coated with anti-rust paint, rust will still appear on the outer wall after a period of use. If it is not cleaned in time, the rust will gradually expand and corrode the inside, causing serious consequences

At present, it is necessary to manually go down to the bottom of the drilling platform for rust removal, which has great safety hazards, and rust removal takes a lot of time

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