Marine top tension riser leakage monitoring device with interference type distributed optical fibers

• Main Authors: FAN XINWEI, GU XIAOHONG, WU LINLIN, WANG QIANG, HAN LINGJUAN
• Format: Patent
• Language: Chinese; English
• Published: 30.03.2016
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; PIPE-LINE SYSTEMS; PIPE-LINES; STORING OF DISTRIBUTING GASES OR LIQUIDS; WEAPONS

The invention discloses a marine top tension riser leakage monitoring device with interference type distributed optical fibers. The marine top tension riser leakage monitoring device comprises a first light path system, a second light path system, a signal processing system and a distributed optical fiber sensing system. A first sensing optical fiber, a first Faraday rotation mirror, a second sensing optical fiber and a second Faraday rotation mirror of the distributed optical fiber sensing system are connected with the first light path system to form three interferometers; a third sensing optical fiber, a third Faraday rotation mirror, a fourth sensing optical fiber and a fourth Faraday rotation mirror of the distributed optical fiber sensing system are connected with the second light path system to form three interferometers. The first light path system and the second light path system transmit light signals to the distributed optical fiber sensing system in the opposite directions respectively. The signal