Air volume control device and method for stabilizing growth of optical fiber preform core rod

Abstract

The invention relates to an air volume control device and a method for stabilizing the growth of an optical fiber preform core rod. Including quartz cavity, metal boom, quartz target rod, lift motor, chuck, exhaust main pipe, exhaust branch pipe, quartz torch, raw gas gas plate, exhaust gas treatment tower, fan unit, anemometer, electromagnetic Air valve, mobile motor, movable cover, connecting rod, industrial computer, PC. The lift motor is connected with the chuck, the chuck clamps the metal boom, hangs the quartz target rod on the end of the metal boom, and extends into the quartz cavity, and the lift motor controls the rise and rotation of the chuck. The quartz torch is installed on the right side of the quartz cavity and is connected to the raw gas gas plate through a pipeline. The main exhaust pipe is installed on the upper left side of the quartz cavity, and an anemometer is installed in the main exhaust pipe. The main exhaust pipe is connected to the exhaust gas treatment tower and then to the fan unit. An exhaust branch pipe is opened on the exhaust pipe, and an electromagnetic air valve is installed in the exhaust branch pipe.

Description

technical field [0001] The invention relates to an air volume control device and method for stabilizing the growth of optical fiber prefabricated rod core rods, which relates to the manufacture of optical fiber prefabricated rod core rods by VAD method. A device and method for maintaining a stable airflow in a deposition chamber. The mandrel powder rod manufactured by using the device and method has fewer air bubbles after sintering, which effectively improves the utilization rate of the mandrel rod, and has high rod diameter uniformity, effectively improving Fiber parameter consistency. technical background [0002] With the development of optical fiber preform technology, the more mature preform core rod preparation methods mainly include axial vapor deposition (VAD), modified chemical vapor deposition (MCVD), and plasma chemical vapor deposition (MCVD). . The background of the device used in this patent is axial vapor deposition (VAD). [0003] The VAD method is used t...

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Problems solved by technology

[0008] The object of the present invention is to provide an air volume control device and method for stabilizing the growth of the core rod of the optical fiber preform in view of the above disadvantages, which can effectively solve the problem of uneven rod diameter in the axial growth of the core rod of the optical fiber preform, thereby ensuring that the core rod The basic parameters of the core are evenly distributed in the axial direction, which can also reduce the number of air bubbles in the mandrel powder rod and improve the utilization rate of the mandrel.

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