An optical cable connection device

Abstract

The invention discloses an optical connection device. The optical connection device comprises a main body structure and sealing structures, wherein the sealing structures are arranged at two ends of the main body structure, the main body structure comprises a fiber accommodating piece and a protection sleeve, first penetrating holes are respectively formed in two ends of the fiber accommodating piece, a melting point is arranged on the exterior of the fiber accommodating piece, fibers of two optical cables respectively penetrate through the sealing structures and the first penetrating holes inthe two ends of the main body structure and are respectively wound around the fiber accommodating piece after the melting point is welded, and the protection sleeve sleeves the exterior of the fiberaccommodating piece after the fibers are wound around. In the optical connection device, winding of a redundancy fiber is achieved by the fiber accommodating piece, the risk that the fiber is broken can be prevented by such an optical cable connection and fixing mode, the device has a relatively good sealing protection effect, so that the fiber is free from influence of an underground severe environment, and site operation is convenient.

Description

technical field [0001] The present application relates to the technical field of optical cables, in particular to an optical cable connection device. Background technique [0002] Due to its small size, easy installation, high temperature and high pressure resistance, strong anti-interference ability and corrosion resistance, fiber optic sensors are more and more used in the detection of temperature, pressure and vibration of oil wells. The optical fiber sensor needs to be connected to the equipment on land through the optical cable when going down the well. The optical cable connection is usually performed by fusion splicing machine to weld the optical fiber. Due to the harsh environment in the underground, such as high temperature, high pressure, vibration and corrosive fluid, etc., it is easy to cause the optical fiber especially It is the damage at the fusion splicing point, so it is necessary to provide protection for the optical cable connection while realizing the opt...

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Problems solved by technology

[0003] The existing optical cable connection device only sets a sealing layer on the outside of the optical fiber connection, such as metal tube sealing, glue injection sealing, etc. However, although the method can prevent the optical fiber from being directly exposed to the downhole environment, the sealing protection effect is limited. There is a risk of being pulled and broken, and the actual operation on site is often complicated, resulting in low efficiency of optical cable connection

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