Three-dimensional measuring equipment for submarine pipelines

Abstract

The invention discloses three-dimensional measuring equipment for submarine pipelines, which comprises a main bracket, a hydraulic clamping mechanism symmetrically disposed on the main bracket, a concentric positioning device, an axial displacement mechanism and a circumferential rotation mechanism. The main bracket is composed of a guide rod used for connecting a front support with a rear support. The hydraulic clamping mechanism is composed of oil cylinders arranged on the front and rear supports. The oil cylinders are connected with clamping claws. The concentric positioning device comprises a fixed seat fixed on the front and rear supports, and the fixed seat is internally provided with a screw. The screw is provided with a support rod. The axial displacement mechanism comprises an upper motor fixed on the front support, a rolling bearing installed at the upper part of the rear support, and a second semi-circular frame structure arranged between the front and rear supports. The circumferential rotation mechanism comprises a lower motor arranged on the second semi-circular frame structure, and a plurality of rollers connected with the second semi-circular frame structure. By means of the three-dimensional measuring equipment, a bent submarine pipeline or other heavily deformed / damaged submarine pipelines can still be accurately measured. Therefore, the one-shot success rate of the repair job is improved.

Description

technical field [0001] The invention relates to a measuring device, in particular to a three-dimensional measuring device for a submarine pipeline. It belongs to the field of offshore oil engineering. Background technique [0002] In submarine pipelines, due to various external force damage and corrosion of seawater itself, submarine pipelines often deform and sag, thus causing oil and gas leakage, causing huge economic losses and marine environmental pollution. In this case, the damaged pipe needs to be repaired. Before repairing, usually, maintenance personnel need to know the damage situation in detail. [0003] At present, the general method is: the diver goes into the water to explore the video, and then uses measuring tools such as tape measure and square to measure. However, this method cannot accurately measure when the submarine pipeline is damaged due to large deformation such as bending, and thus brings some obstacles to the repair work. Contents of the inven...

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Problems solved by technology

[0004] The main purpose of the present invention is to overcome the above-mentioned shortcoming existing in the prior art, and provide a kind of three-dimensional measurement device of submarine pipeline, it can not only effectively carry out three-dimensional imaging to the deformation damage of submarine pipeline and pit damage, and, in the presence of submarine pipeline Accurate measurement can be made when large deformation damage such as bending occurs, so that a complete repair plan can be determined, and the first-time success rate of repair work can be improved; the problem of inability to measure accurately when large deformation damage of submarine pipelines is solved

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