초록 ▼

A vapor recovery system employs a sensor apparatus for determining the actual content of hydrocarbon in the effluent vapor stream. The vapor flow of the hydrocarbon effluents is regulated by controlling an adjustable valve configured at the intake or outtake side of the vapor pump in accordance with

A vapor recovery system employs a sensor apparatus for determining the actual content of hydrocarbon in the effluent vapor stream. The vapor flow of the hydrocarbon effluents is regulated by controlling an adjustable valve configured at the intake or outtake side of the vapor pump in accordance with the measured hydrocarbon content. The vapor flow rate is effectively varied without requiring any change in the pump operating speed. Sensor apparatus for performing the hydrocarbon measurements include a fiber-optic sensor, an oxygen sensor, and a crystal oscillation sensor. A solenoid assembly is provided to suitably activate the valve in response to the sensor measurement data.

대표청구항 ▼

[ What is claimed is:] [1.]1. A system for recovering hydrocarbon vapor effluents from a fuel storage container for use with a fuel delivery system, comprising:vapor transfer means for generating a vapor drawing action effective in communicating vapor between an inlet port and an outlet port thereof

[ What is claimed is:] [1.]1. A system for recovering hydrocarbon vapor effluents from a fuel storage container for use with a fuel delivery system, comprising:vapor transfer means for generating a vapor drawing action effective in communicating vapor between an inlet port and an outlet port thereof;sensor means, disposed in effluent-detecting relationship to said fuel storage container, for providing a measurement indicative of the hydrocarbon content in said hydrocarbon effluents; andvalve means, disposed in vapor communicating relationship at an inlet port thereof to said fuel storage container and disposed in vapor communicating relationship at an outlet port thereof to the inlet port of said vapor transfer means, for controllably regulating the vapor flow of hydrocarbon effluents to said vapor transfer means in accordance with the hydrocarbon content measurement provided by said sensor means by causing said vapor transfer means to internally circulate the vapor flow of hydrocarbon effluents.