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TRACER GAS AIRFLOW MEASUREMENT SYSTEM WITH HIGH TURNDOWN RATIO

机译:量程比高的示踪气体流量测量系统

摘要

A gas injector apparatus and method for use with a tracer gas airflow measurement system that allows for large, continuous tracer gas flow rates while avoiding operation at very cold temperatures that will damage equipment. The controlled and variable heating of high pressure tracer gas flow before a gas regulator allows all points in the system to remain above freezing, and within a safe temperature range. The system has a tracer gas source and a heater that heats the gas isobarically at high pressure (100 psi) and the hot gas is expanded across a pressure regulator to a lower working pressure to ~30 psi. The gas flow is modulated using a mass flow controller with a high turndown ratio and injected into a bulk fluid flow with an injector.
机译:一种与示踪气体流量测量系统一起使用的气体注射器设备和方法,其允许大的连续示踪气体流量,同时避免在非常冷的温度下运行,这会损坏设备。在气体调节器之前,高压示踪气体的受控加热和可变加热使系统中的所有点都保持在冰点以上,并处于安全的温度范围内。该系统具有示踪气体源和加热器,该加热器在高压(> 100 psi)下等压地加热气体,并且热气通过压力调节器膨胀至较低的工作压力至〜30 psi。使用具有高调节比的质量流量控制器调节气流,并使用喷射器将其注入大量流体中。

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