Water cooling system for large-size optical fiber preformed rod and water cooling method thereof

Abstract

The invention relates to a water cooling system for a large-size optical fiber preformed rod and a water cooling method thereof. According to the system, on one hand, the temperature of an equipment operation room can be reduced and the service life of components and parts in equipment is prolonged; on the other hand, the system can be used for reducing the temperature of an exhausting pipe (an FRP (Fiber Reinforce Plastic) pipeline) and improving the waste gas treatment capability. The system comprises a cooling base part, an exhausting cover outer cooling device, an exhausting pipe cooling device and a water cooling set; the cooling base part comprises a water cooling plate and a flow guide device; the water cooling plate is sealed in the flow guide device and the flow guide device is in a semi-closed structure and comprises a flow guide cover and a connector; the flow guide cover is internally provided with a flow guide groove; the exhausting pipe cooling device comprises an inner sleeve, an outer sleeve and an exhausting pipe cooling water pipe; the exhausting cover outer cooling device and the exhausting pipe cooling device adopt the same structure; the water cooling set comprises a cooling tower, a water tank, a circulating water pump, a refrigerating machine, a cooling water pump, a frequency converter, a temperature sensor, a water tank water filling opening, a water returning opening, a cooling fan, a spraying pipe, a refrigerating machine and a cooling fan.

Description

technical field [0001] The present invention relates to a large-size optical fiber preform water cooling system and its water cooling method. On the one hand, the system can reduce the temperature of the equipment operating room and improve the life of components in the equipment; on the other hand, the system can reduce the exhaust duct (FRP pipe) temperature, improve exhaust gas treatment capacity. Background technique [0002] Since 2005, on the one hand, the demand for optical fiber has increased year by year, and on the other hand, the price of optical fiber has continued to be at a low point. This has put a lot of pressure on optical fiber manufacturers. To survive in this era of meager or even no profit, only Take the road to reduce the cost of optical fiber production. Large-size optical fiber preform has become the main direction of preform technology development. [0003] There are four main methods of producing silica optical fiber prefabricated core rods: [0...

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Problems solved by technology

[0007] 1. SiCl used in large size preform 4 、H 2 , O 2 The flow rate is relatively high. Under this condition, a large amount of heat is generated during the deposition process, the temperature in the operation room is high, the loss of internal components is increased, and the service life will be relatively reduced;

[0008] 2. The high heat generated during the deposition process will also put a huge pressure on the exhaust system and waste gas treatment. On the one hand, in order to remove the heat in the equipment, the frequency of the exhaust fan needs to be increased; in addition, under high flow conditions, raw materials The utilization rate will be reduced, and the waste gas generated will be relatively increased, which will put a huge pressure on the waste gas treatment

[0017] In the existing large-size optical fiber preform OVD manufacturing technology, due to the device and process, the heat generated during the deposition process is relatively high. On the one hand, the life of the components in the equipment is relatively low, and the frequency of damage is high; The deposition efficiency is low, the exhaust gas volume is large, and the exhaust gas temperature is high, which puts forward higher requirements for the exhaust gas treatment equipment, and the equipment load is relatively large

[0018] Equipment depreciation loss, equipment components, raw materials, gas, electricity, etc. are the main components of the preform cost. If the components are damaged or the equipment is abnormally shut down due to high heat deposition, it will directly lead to the scrapping of raw materials, etc. loss

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