Measuring Accurate Depth Sensors

Abstract

The invention in particular relates to a depth sensor capable of accurately measuring and belongs to the technical field of depth measurement of petroleum drilling. The depth sensor capable of accurately measuring is accurate in measurement, good in stability and long in service life. The depth sensor capable of accurately measuring comprises a shell, wherein a first vertical through hole is formed in the middle of the shell; a central shaft penetrates through the first vertical through hole; upper and lower bearings sleeve the outer side of the middle shaft; the bearings are in transition fit with the first vertical through hole. The depth sensor is structurally characterized in that a magnetic disc is arranged on an outer wall of a central shaft at the upper end of the upper bearing around the central shaft; the middle part of the upper end face of the magnetic disc is connected with the lower end face of a transverse lug boss which is arranged on the outer wall of the central shaft around the central shaft; the middle part of the lower end face of the magnetic disc is connected with the upper end face of the upper bearing; a shaft sleeve capable of preventing the bearing from moving in the axial direction is arranged on the central shaft at the lower end of the lower bearing; a housing is fixed at the upper part of the shell and a transverse through hole is formed in one side of the housing; a connector is arranged at the outer end of the transverse through hole.

Description

technical field [0001] The invention belongs to the technical field of oil drilling depth measurement, in particular to a depth sensor with accurate measurement. Background technique [0002] The sensor for measuring depth in the oil drilling industry is installed on the shaft of the winch drum, and the rotation of the winch drum drives the input shaft of the depth sensor to rotate, which can detect the angular displacement change of the shaft of the winch drum during the drilling process. The height position changes, so as to measure the drilling depth. [0003] At present, there is only one support bearing for the depth sensor, which is under unilateral force during operation. When the winch drives the input end of the depth sensor to rotate, eccentricity and other situations will inevitably occur, resulting in wear of the central shaft and poor stability. At the same time, if the eccentricity of the frame oil seal and the shaft is too large, the sealing performance will ...

AI Technical Summary

Problems solved by technology

However, the processing requirements for the tooth piece are relatively high, which increases the processing cost. The tooth piece rotates between the openings of the proximity switch. The thickness should not be too thick, otherwise the tooth piece will wear the proximity switch, and it should not be too thin, otherwise it will be easily deformed, and the installation of the thin tooth piece is difficult.

Images