A double-sealed hydraulic telescopic grouting clamp for an underwater jacket

Abstract

The invention aims at providing a double-seal hydraulic telescopic grouting clamp for an underwater jacket. The double-seal hydraulic telescopic grouting clamp comprises a clamp sleeve part, a filler seal part and a locking part, wherein the clamp is integrally moved by a hanger rope to a jacket to be repaired, a saddle plate is controlled by a hydraulic cylinder to unfold, the saddle plate is enabled to cover the jacket by adjusting the position of the hanger rope, and the saddle plate is controlled to fold by virtue of the return of the hydraulic cylinder; then a locking hydraulic cylinder stretches out to drive a locking rod piece so as to lock two clamps. Finally an inner end cover and an outer end cover for sealing filler are arranged on two ends of the clamp, a filler hydraulic cylinder stretches out to close the end covers, and the end covers are fixed on the clamp by virtue of bolts so as to realize the secondary seal. By adopting the double seals and double hydraulic telescopic structures, the double-seal hydraulic telescopic grouting clamp is suitable for repairing and reinforcing the underwater damaged jacket due to a series of reasons such as accidental collision of marine organisms, increasing corrosion of seawater, abrasion of a platform, fatigue of materials and the like, the reinforcing efficiency is obviously improved compared with the prior art, and the sealing capability is also improved.

Description

technical field [0001] The invention relates to a repairing device for a marine underwater jacket. Background technique [0002] In the 21st century, people's demand for oil and gas resources is increasing day by day, while land oil and gas resources are gradually decreasing or even depleting. Therefore, my country has listed the development of marine oil and gas resources as a key project. The development of offshore oil and gas resources is inseparable from the auxiliary role of offshore platforms. However, due to a series of reasons such as marine organisms and accidental collisions, increasing corrosion of seawater, platform wear, and material fatigue, the underwater steel pipe rods and pipelines used to build offshore platforms are difficult to perform. Local stresses at contact nodes can exceed the applied criteria. The stiffness and strength of some locally significant structures may exceed application code requirements. This local damage will reduce the reliability...

AI Technical Summary

Problems solved by technology

This method is time-consuming and laborious, and the effect of the common sealing method on multi-lobe clamps is not very good. Therefore, a double-sealed hydraulic telescopic grouting clamp for underwater jackets is particularly important

[0004] The existing grouting clamp technology for repairing the jacket platform adopts single-layer sealing, and the installation process requires more manpower, and the degree of automation is relatively low, which is time-consuming and laborious

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