Development of Extended-Throat Venturimeter for On-Line Measurement of Gas-Solid Flows

用于在线测量气固流的加长喉管文丘里计的研制

• 批准号: 8660579
• 负责人: Samuel Bernstein
• 金额: $ 4.26万
• 依托单位: Energy International Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-02-01 至 1987-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8660579&HistoricalAwards=false
• 关键词: Development; Extended; Throat; Venturimeter; Line

In development of coal-based energy systems, there is an acute need for instrumentation capable of measuring flow rates of solids and gas in gas-solid suspensions under high temperature (up to 1700oF) and high pressure (up to 100 atm) conditions. Several instrumentation concepts have been or are currently under study (i.e., sonic Doppler meters, correlation meters, capacitive transducers, Coriolis-effect meters, and laser-based devices). Many show some promise, although they are quite complex, and others require considerably more development or will be restricted to use only in limited flow conditions. This proposal represents a plan for investigation and development of an innovative gas-solids flow meter currently under development at Energy International, Inc., in cooperation with Washington State University. Preliminary technical and system studies conducted have shown that extending the throat of a typical venturimeter will improve the sensitivity of the device. Further experiments and analysis have shown that the extended-throat venturimeter will be capable of measuring flow rates for both the solids and gas phases without requiring particle size information. The principal investigators are well qualified to conduct this research, and a grant is highly recommended. This is for Phase I of the Small Business Innovation Program Solicitation, NSF 86-19.

在煤基能源系统的开发中，迫切需要能够在高温（高达 1700oF）和高压（高达 100 atm）条件下测量气固悬浮液中固体和气体流量的仪器。 一些仪器概念已经或正在研究中（即声波多普勒测量仪、相关测量仪、电容式传感器、科里奥利效应测量仪和基于激光的设备）。 尽管它们相当复杂，但许多都显示出一些前景，而其他一些则需要更多的开发或仅限于在有限的流量条件下使用。 该提案代表了一项研究和开发创新型气固流量计的计划，目前 Energy International, Inc. 正在与华盛顿州立大学合作开发。 进行的初步技术和系统研究表明，延长典型文丘里计的喉部将提高设备的灵敏度。 进一步的实验和分析表明，加长喉式文丘里计将能够测量固相和气相的流速，而无需颗粒尺寸信息。 主要研究人员完全有资格进行这项研究，强烈建议给予资助。 这是小型企业创新计划征集的第一阶段，NSF 86-19。