Detection device for oil pipe coupling

Abstract

The invention provides a detection device for an oil pipe coupling. The detection device comprises a half-sealed ram preventer. The half-sealed ram preventer comprises a body, a protective cover, a screw rod and flashboards, wherein flashboard cavities are symmetrically arranged on two sides of a main through route of the body; two flashboards are arranged in the two flashboard cavities respectively; the protective cover and a pressing cap are sequentially arranged on the outer side of the flashboard cavities; the internal end of the screw rod is positioned in the flashboard cavities; an operating handle and a lock nut are arranged at the external end of the screw rod; a driving nut is arranged on the internal end of the screw rod; a guide sleeve is sleeved on the outer side of the driving nut; a lug boss clamped at the external end of the driving nut is arranged at the external end of the guide sleeve; the internal end of the guide sleeve is connected with the flashboards; a rack is arranged on the flashboards, and meshed with a gear on a gear shaft; and a sensing wheel is also arranged on the gear shaft. The oil pipe coupling detecting device has a simple structure, is convenient to operate and accurate in detection results, avoids damage to the preventer and greatly improves the working efficiency of pressure operation.

Description

technical field [0001] The invention relates to a control device for oil and gas wells in an oil field, in particular to a detection device for oil pipe collars suitable for pressure operation. Background technique [0002] The main device for hot work is the annular blowout preventer or the ram blowout preventer, which deforms under the control of hydraulic pressure, so as to hold the tubing in the well tightly and seal the wellhead. Since the diameter of the coupling of the oil pipe is larger than the diameter of the pipe, when it is forced to pass through the blowout preventer, it will cause friction and tear to the annular rubber core, shorten the service life of the rubber core, increase the production cost, and reduce the work efficiency. The function of the oil pipe coupling detection device is to send an alarm or control signal when the oil pipe coupling is close to the blowout preventer, so that the blowout preventer can be opened quickly and timely to ensure the sm...

AI Technical Summary

Problems solved by technology

The currently used oil pipe coupling detection devices are usually electromagnetic induction, which not only has a complex structure and is inconvenient to use, but also is affected by factors such as the instantaneous instability of the external power frequency power supply, and the oil pollution and metal materials on the job site. Big error, low reliability

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