Injector
OwnerRobert C. Rajewskiinventor
Life of this patent
Estimating the term…
Abstract
An injector injects fluids, such as hydrate inhibitors into a pipeline such as a natural gas pipeline. The injector is comprised of two motor valves with different force constants such that they open and close in a sequence that injects fluid into the pipeline. The motor valves are controlled by pressure in a control line, where the pressure in the control line is controlled by a latching solenoid valve that pressurizes and vents the control line, according to the signals received from a control panel. When used with a natural gas pipeline, the displaced natural gas captured by the overhead storage tank can be used to fuel a natural gas heater.
Claims24
An injector for injecting fluids into a pipeline, the injector comprising:
- a source of fluid to be injected;
- a first and a second motor valve the first motor valve having a larger force constant and being connected to regulate flow between the source of fluid and a displacer tube, the second motor valve having a lesser force constant and being connected to regulate flow between the displacer tube and the pipeline;
- and
- a control line connected to the first and second motor valve for controlling the first and second motor valve.
A hydrate inhibitor injector for injecting hydrate inhibitor into a natural gas pipeline, the injector comprising:
- a source of hydrate inhibitor;
- and
- a first valve and a second valve on a line connected to the source of hydrate inhibitor, the first valve and the second valve being configured to isolate a slug of hydrate inhibitor in response to a first signal from a controller and deposit the slug of hydrate inhibitor in a natural gas pipeline in response to a second signal from the controller.
Dependencies are inferred from the claim text.