Pipe inner detector for water riser edge

Abstract

The invention discloses a pipe inner detector for a water riser edge, which comprises a longitudinal and long central shaft. The central shaft is provided with a front end and a rear end, wherein thefront end and the rear end are opposite to each other. The front end is provided with a connector and the rear end is provided with a plug end seat. Along the longitudinal direction of the central shaft, at least two detection rings are arranged between the connector and the plug end seat in a sleeving manner. The detection rings comprise two sliding sleeves arranged on the central shaft in a sleeved mode at intervals, and a plurality of elastic pieces respectively connected with the two sliding sleeves. The plurality of elastic pieces are uniformly distributed at intervals in the circumferential direction. Each elastic piece is provided with a mounting surface facing a to-be-tested pipe wall. A sensor box is fixed on the mounting surface and a sensor is arranged in the sensor box. The sensors of every two adjacent detection rings are distributed in a staggered mode, and all the sensors can form a complete coverage area in the circumferential direction. According to the invention, under the condition that buoyancy blocks are not disassembled, a water riser side pipe can be rapidly and efficiently detected. The detection time effectiveness can be improved, and the operation cost canbe reduced.

Description

technical field [0001] The invention relates to the technical field of detection devices, in particular to an in-pipe detector at the side of a riser. Background technique [0002] Drilling riser is the key equipment of semi-submersible platform, which is used in harsh environment, and its performance is directly related to the safety of platform operation. Generally, a single riser includes a central riser main pipe and a plurality of riser side pipes (ie riser auxiliary pipelines) surrounding the riser main pipe. The riser side pipe is an important part of the single riser. Generally, each riser has 4 or 5 auxiliary pipelines with different inner diameters, including high-pressure choke pipelines, kill pipelines, drilling fluid pressurized pipelines, hydraulic transmission pipelines, chemical agent injection pipelines, etc. These pipelines are under high pressure during the working process, and the fluid medium in them is mostly corrosive, so the failure mode often manif...

AI Technical Summary

Problems solved by technology

When the existing detection equipment is used to scan the longitudinal direction of the riser side pipe externally, it is inevitable that the buoyancy block will interfere with the existing detection

Therefore, when using the existing testing equipment for testing, it is necessary to remove the buoyancy block before testing, which has defects such as long operation period, low efficiency, and high cost.

Images