Potting packaging method of fiber-optic hydrophone probe

A fiber optic hydrophone and packaging method technology, applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as fiber damage, fiber stress unevenness, fiber optic hydrophone probe failure, etc. Reliability and the effect of improving yield

Active Publication Date: 2019-03-01
HAIYING ENTERPRISE GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under the change of ambient temperature and pressure, the stress on the optical fiber is not uniform, resulting in damage to the optical fiber, resulting in the failure of the entire optical fiber hydrophone probe

Method used

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  • Potting packaging method of fiber-optic hydrophone probe
  • Potting packaging method of fiber-optic hydrophone probe
  • Potting packaging method of fiber-optic hydrophone probe

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specific Embodiment

[0029] Specific embodiment: when the sound-transmitting material 4 is polyurethane, and the material of the elastic cylinder 2 is PC, an optical fiber ring is arranged on the outer wall of the elastic cylinder 2 to form an optical fiber ring 3, and the sound-transmitting material 4 is poured under normal pressure. Installed on the exposed surface of the fiber optic ring 3, so that the sound-transmitting material 4 is coated on the exposed surface of the fiber-optic ring 3, and in the uncured state of the sound-transmitting material 4, put the entire fiber optic hydrophone probe into the cavity of the airtight container , seal the airtight container, and then inject high-pressure inert gas into the airtight cavity, so that the pressure in the airtight cavity reaches 1 MPa, and then maintain the pressure for 8 hours, so that the sound-transmitting material 4 can fully enter between the optical fiber ring 3 and the elastic cylinder 2 The sound-transmitting material 4 completely wr...

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Abstract

The invention provides a potting packaging method of a fiber-optic hydrophone probe. By the potting packaging method, an acoustic transmission material fully enters a gap between an optical fiber ringand an elastic cylinder in a potting process, and the non-defective rate in production of hydrophone probes and long-time serviceability are improved. According to the potting packaging method, the acoustic transmission material is poured into a hydrophone probe under ordinary pressure, the fiber-optic hydrophone probe is integrally put into a closed container when the acoustic transmission material is not cured, pressure in a closed cavity is raised and maintained, after a period of time, the acoustic transmission material is cured in the closed container, and packaging is finished.

Description

technical field [0001] The invention relates to the technical field of making optical fiber hydrophones, in particular to a method for filling and encapsulating optical fiber hydrophone probes. Background technique [0002] Optical fiber hydrophone is an underwater acoustic signal sensor based on optical fiber and photoelectric technology. It converts underwater acoustic vibrations into optical signals through high-sensitivity optical coherent detection, and transmits them to the signal processing system through optical fibers to extract the acoustic signal information. [0003] The structure of fiber optic hydrophone probe, see figure 1 , which generally includes a support and protection frame 1 , an elastic cylinder 2 , an optical fiber ring 3 and a sound-transmitting material 4 . The existing encapsulation method is to wrap the sound-permeable material around the optical fiber ring by normal-pressure perfusion, so as to play the role of sound-permeability, structural pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29C45/57G01H9/00
CPCB29C45/0025B29C45/14819B29C45/57G01H9/004
Inventor 李治凯顾晓红李嘉张永华陈佳运
Owner HAIYING ENTERPRISE GROUP
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