Liquid hydrocarbon delivery means including means for monitoring gas content
AssigneeSchlumberger Industries
InventorsSylvain Janssen, Jacques Fournier
Life of this patent
Estimating the term…
Abstract
When a hydrocarbon liquid is pumped (11) for retail delivery, it is degassed by means of a vortex device (13). A control valve (21) shuts off delivery if the gas content in the degassed liquid being delivered via a main duct (16) is too high. Unlike prior systems which sense gas content only in the liquid being delivered, the present invention senses the greater gas content in the recycled gas-enriched fraction from the vortex separator device (13). This is done by means of a venturi system (19) controlling a servo-valve (25) which in turn controls the control valve (21). By using a magnified image of the gas content, the system is made more sensitive and more reliable.
Claims4
Hydrocarbon delivery means comprising:
- a pump for extracting hydrocarbon from a storage tank;
- a vortex type degassing device comprising an inlet duct connected to said pump, an outlet duct, and an axial auxiliary outlet for taking off a fraction of the hydrocarbon which is enriched in gas;
- a hydrocarbon delivery tube;
- a control valve mounted between said delivery tube and the outlet from said degassing device;
- and
- a servo-control device for servo-controlling said control valve as a function of the gas content in the hydrocarbon, said servo-control device comprising a venturi system mounted on said auxiliary outlet and means for causing said control valve to close as a function of the pressure in said venturi system.
Dependencies are inferred from the claim text.