Optical fiber hydrogen loading device and method

Abstract

The invention relates to an optical fiber hydrogen loading device and method. The optical fiber hydrogen loading device comprises a reactor, a pneumatic vacuum pump and a pneumatic hydrogen booster pump, wherein a vacuumized gas outlet is formed in the pneumatic vacuum pump and is connected with the reactor through a pipeline; a high-pressure hydrogen inlet and a high-pressure hydrogen outlet are formed in the pneumatic hydrogen booster pump; the high-pressure hydrogen inlet is connected with a hydrogen cylinder through a pipeline; the high-pressure hydrogen outlet is connected with the reactor through a pipeline; the reactor is used for placing optical fibers needing to be loaded with hydrogen; a hydrogen exhaust pipe is arranged on the reactor; after the reactor is vacuumized by the pneumatic vacuum pump, high-pressure hydrogen is injected into the reactor by the pneumatic hydrogen booster pump, and after the hydrogen loading process is completed, the hydrogen is discharged by a hydrogen discharge pipe. With the adoption of the scheme, the optical fiber hydrogen loading device has the beneficial effects that the operations of vacuumizing, injecting hydrogen and discharging the hydrogen are respectively performed by adopting different valves, the vacuum degree before hydrogen injection is ensured, the vacuumizing effect is improved, and the safety of the hydrogen loading operation is ensured.

Description

technical field [0001] The invention relates to the technical field of optical fiber manufacturing, in particular to an optical fiber hydrogen-carrying device and method. Background technique [0002] High-pressure hydrogen loading can make ordinary optical fibers have photosensitivity. The hydrogen-carrying device is to allow hydrogen molecules to be doped into the fiber core under high pressure. Using the hydrogen-carrying device, low-cost ordinary optical fibers can be used to make fiber gratings, which can reduce costs. [0003] The hydrogen-carrying device in the prior art can realize hydrogen-carrying treatment, but no effective measures are taken to evacuate the air in the system. The explosion limit range of hydrogen is between 4.0% and 75.6% of the volume percentage of hydrogen in the total gas content. When the vacuum effect is not good, directly use hydrogen to pressurize the loading tank, so that hydrogen and air are directly mixed, which will cause A great se...

AI Technical Summary

Problems solved by technology

The explosion limit range of hydrogen is between 4.0% and 75.6% of the volume percentage of hydrogen in the total gas content. When the vacuum effect is not good, directly use hydrogen to pressurize the loading tank, so that hydrogen is directly mixed with air, which will cause great safety hazard

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