确保现场低温分离装置运行的压缩机设备运行模式建模方法分析

M. A. Vorontsov, V. Y. Glazunov, A. S. Grachev, M. S. Mashtalir, S. A. Pospelov, A. V. Chernyshev
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引用次数: 0

摘要

目的。增压压缩机站(BCS)是确保天然气低温分离技术在田间天然气制备运输系统中有效运行所必需的关键技术设施之一。确保增压压缩机站的高效运行模式是一项紧迫任务。方法。解决这一问题的工具之一是建立离心压缩机(以下简称 CPC)运行模式的数学模型,CPC 是气体泵组(GPU)的一部分。数学模型的基础是纸浆和造纸厂的气体动态特性 (GDC)。现有的规范性文件提出了建立 HDC 模型的简化方法,这些方法适用于压力比不超过 1.5 和压缩级数不超过三级的低压制浆造纸厂,但不适用于多级高压制浆造纸厂。结果。以压力比最高为 2.0 的纸浆和造纸厂为例,介绍了高压纸浆和造纸厂流体动力特性建模的三种方法(减小特性法、减小特性精炼法、双参数近似法)的比较结果,该纸浆和造纸厂的目的是为现场增压压缩机站配备气体抽吸装置。对建模结果和实际数据进行了分析和比较。得出结论。在使用 UMPH-2D 建模方法时,获得的误差最小(不超过 2.0%),这反过来又表明,在重新计算高压和多级压缩机气体流量特性的方法中,该方法的准确性最高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of methods for modeling operating modes of compressor equipment that ensures the operation of field low-temperature separation units
Objective. A booster compressor station (BCS) is one of the key technological facilities necessary to ensure the effective operation of low-temperature separation technology for natural gas in field gas preparation systems for transportation. Ensuring promising operating modes of booster compressor stations with high efficiency is an urgent task. Method. One of the tools for solving this problem is mathematical modeling of the operating modes of centrifugal compressors (hereinafter - CPC), which are part of gas pumping units (GPU). The basis of the mathematical model is the gas dynamic characteristic (GDC) of the pulp and paper mill. The existing regulatory documentation presents simplified methods for modeling HDC, which are suitable for low-pressure pulp and paper mills with a pressure ratio of up to 1.5 and the number of compression stages of no more than three, but are not suitable for multi-stage high-pressure pulp and paper mills. Result. The results of a comparison of three methods of modeling the hydrodynamic characteristics (method of reduced characteristics, refined method of reduced characteristics, method of two-parameter approximation) of high-pressure pulp and paper mills are presented using the example of a pulp and paper mill with a pressure ratio of up to 2.0, intended for equipping a gas pumping unit as part of field booster compressor stations. An analysis and comparison of the obtained modeling results with actual data was carried out. Conclusion. When using the UMPH-2D modeling method, the smallest errors were obtained (no more than 2.0%), which, in turn, indicates its highest accuracy among the considered methods for recalculating the gas flow characteristics of high-pressure and multi-stage compressors.
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