JET EJECTOR DEVICE

• US 3,829,247 A
• Filed: 06/12/1973
• Issued: 08/13/1974
• Est. Priority Date: 03/18/1971
• Status: Expired due to Term

• Current Assignee: Russel B. Edmonson
• Original Assignee: Russel B. Edmonson
• Inventors: Edmonson, Russel B.
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Gluck, Richard E.
• Application Number:
  US05/369,158
• Time in Patent Office: 427 Days
• Field of Search: 417/151,182,170,171,198,176,174,196 239/127.3,255.17
• US Class Current: 417/182
• CPC Class Codes: F04F 5/10 displacing liquids, e.g. containing solids, or liquids and elastic fluids
• CPC Class Codes: F04F 5/46 Arrangements of nozzles
• CPC Class Codes: F04F 5/48 Control

Abstract

A device for removing oil field waste material from storage tanks is presented. The storage tanks are equipped with a gravity discharge drain, and may have internal sprayers to flush the waste material from the tank. The discharge drain is connected to a mixing chamber interior to a jet ejector pump. Water under high pressure enters the pump chamber through a converging nozzle, and exits the chamber through a conical constriction at the discharge port. The passage of the water through the chamber creates a partial vacuum therein which draws air through a vent and the waste materials from the tank, into the chamber, which materials are then entrained in the water stream. The waste materials carried by the water stream then jet from the chamber through a pipe connected to the discharge port to a disposal site.

Claims

1. A jet device for withdrawing oilfield waste materials from storage tanks and for entraining them in a stream of water under pressure comprising:

a hollow chamber, a converging nozzle extending through a wall of said chamber, said chamber having a discharge port coaxially aligned with the longitudinal axis of said nozzle, siad nozzle adapted to be coupled to a source of water under pressure and to discharge water therefrom into said chamber, the interior walls of said chamber adjacent the discharge port converging to funnel liquid within said chamber through said discharge port;

a conduit extending through a wall of said chamber and terminating in an opening, the opening being disposed perpendicularly to the longitudinal axis of said nozzle, said conduit opening into the converging walls of said chamber adjacent the discharge port;

means carried by said conduit for coupling said conduit to a drain in at least one storage tank disposed over said device so that the oilfield waste in said storage tank will flow from the drain therein into said conduit and into said chamber by gravity; and

an atmospheric vent pipe extending through a wall of said chamber and terminating in an opening, the pipe opening being disposed perpendicularly to the longitudinal axis of said nozzle, the opening of said conduit and the opening of said vent pipe being disposed in a common plane with the discharge end of said nozzle, the horizontal axis of said vent opening being disposed between the horizontal axis of said conduit opening and said nozzle opening, the ratio of the inside diameter of said nozzle, the insdie diameter of said vent opening and the insdie diamter of said chamber at the common plane containing said openings being about 3;

1;

12, respectively, so that when water under pressure flows through said nozzle into said chamber and exits from said chamber through said discharge port, air from said vent and waste material from said conduit are entrained, in said chamber, in the water and exit said chamber as a jet through the discharge port.

2. The device of claim 1 wherein the inside diameter of said conduit opening is about 1 1/2 inches.

3. The device of claim 1 wherein the inside diamter of said vent pipe opening is about 1/2 inch.