A crosslinking line nitrogen circulation system

Abstract

The invention discloses a crossed-wire nitrogen gas circulating system which comprises the components of crossed-connected wires, a nitrogen gas circulating pipe, a first circulating air-returning port flange, a second circulating air-returning port flange, a first temperature measuring thermocouple, a first pressure gauge, a condenser, a circulating air fan, a second temperature measuring thermocouple, a second pressure gauge, a nitrogen gas pipe, a cooling water inlet pipe, a cooling water outlet pipe, a by-product collecting tank and a control valve set. The first temperature measuring thermocouple, the first pressure gauge, the condenser, the circulating air fan, the second temperature measuring thermocouple and the second pressure gauge are successively connected. The control valve set comprises a high-temperature sluice valve, a normally closed high-temperature pneumatic butterfly valve, a corner seat control valve, a normally open high-temperature pneumatic butterfly valve and a high-temperature butterfly valve. The control valve set is used for controlling input / output amount and circulating speed of the nitrogen gas. The crossed-connected wire nitrogen gas circulating system performs real-time adjustment on the nitrogen gas circulating speed and furthermore improves quality of crossed-connected cables.

Description

technical field [0001] The invention relates to the field of crosslinking line production, in particular to a crosslinking line nitrogen circulation system. Background technique [0002] During the shutdown process of the cross-linking line, the general manufacturer will have a shutdown line. In the absence of a shutdown nitrogen circulation system, the process requires that the thickness of the insulating layer be reduced during the speed reduction process to reduce shutdown costs. The cables made from this shutdown line are waste products, and there will generally be a waste of 60 to 70 meters. . The cross-linked pipeline is composed of heating pipeline, pre-cooling pipeline and cooling pipeline. Half of the pre-cooling pipeline is filled with nitrogen with a certain pressure. The nitrogen mainly plays a cooling role. The high-pressure nitrogen is to prevent the formation of large For air bubbles and excessive moisture, nitrogen is mainly used as a heat transfer medium t...

AI Technical Summary

Problems solved by technology

In the absence of a shutdown nitrogen circulation system, the process requires that the thickness of the insulating layer be reduced during the speed reduction process to reduce shutdown costs. The cables made from this shutdown line are waste products, and there will generally be a waste of 60 to 70 meters.

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