An Instrument Compression System for Polyester Plant
A technology of instrumentation and polyester, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as sudden drop in pipeline pressure, instrument failure, and sudden increase in consumption, so as to avoid losses and prevent valve failures Effect
Active Publication Date: 2017-06-30
JIANGSU SHENJIU CHEM FIBER CO LTD
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Problems solved by technology
[0003] However, since polyester instrument pressure and spinning production use a large pipeline together, when an abnormal car jump occurs during spinning production, the spinning suction gun will be automatically put into use, resulting in a sharp increase in the amount of compressed air in a short period of time. If the pipeline pressure drops suddenly, the polyester instrument will under-report the loss of pressure, and even cause the instrument to fail
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[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] figure 1 It is a schematic diagram of Embodiment 1 of the instrument air pressure system of the present invention. Such as figure 1 As shown, the instrument pressure system includes the nitrogen pipeline, the interlock system and the pressure pipeline directly connected with the polyester unit. An automatic valve (V2) is provided on the compressed air pipeline, and an automatic valve (V′2) is provided on the nitrogen pipeline. The compressed air pipeline is connected to the nitrogen pipeline, and the polyester unit is There is a pressure gauge (P2) in the air line between them. The chain...
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The present invention relates to a kind of instrument pressure air system for polyester plant, it is characterized in that, comprises, nitrogen pipeline interlocking system and the air pressure line directly connected with polyester machine, and automatic valve (V2) is arranged on the air line, An automatic valve (V′2) is provided on the nitrogen pipeline, and the compressed air pipeline is connected to the nitrogen pipeline, and a pressure gauge (P2) is provided on the compressed air pipeline between the nitrogen pipeline and the compressed air pipeline to the polyester unit, The interlocking system includes: automatic valves (V2), (V′2) and pressure gauge (P2). When the pressure of the pressure gauge (P2) is lower than the predetermined value of the system, a signal is sent out, and the system closes the automatic valve (V2) at the same time Open the automatic valve (V'2). Through the instrument air pressure system provided by the present invention, when the instrument air pressure is abnormal, nitrogen gas is introduced, so as to prevent valve failure caused by instrument air pressure loss and avoid the loss and occurrence of major accidents.
Description
technical field [0001] The invention relates to the field of instrument depressurization, in particular to an instrument depressurization system for a polyester plant. Background technique [0002] In the production of polyester, the instrument pressure system plays a very important role in the safety, stability, economy and reliability of the whole system. Therefore, it is particularly important to ensure the stability of the instrument pressure system. In order to ensure the stable operation of the instrument pressure system, stable air pressure is required. [0003] However, since polyester instrument pressure and spinning production use a large pipeline together, when an abnormal jump occurs in spinning production, spinning suction guns are automatically put into use, resulting in a sharp increase in the amount of compressed air in a short period of time. If the pipeline pressure drops suddenly, the polyester instrument will under-report the loss of pressure, and even ...
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IPC IPC(8): F17D1/02F17D1/08
Inventor 邱国全张治义朱希访谭荣波
Owner JIANGSU SHENJIU CHEM FIBER CO LTD