Swirl-type demulsification and dehydration device for oil-water emulsion

A swirl-type demulsification and dehydration device for an oil-water emulsion, comprising:

• a swirler;
• wherein the swirler comprises a swirl chamber and an underflow pipe;
• the swirl chamber is cylindrical, and the underflow pipe is coaxial with the swirl chamber;
• the swirl chamber comprises a closed end and an open end;
• the closed end of the swirl chamber is connected with an inlet pipe and an overflow pipe;
• the overflow pipe is coaxial with the swirl chamber;
• the inlet pipe is tangent to a circumferential inner wall of the swirl chamber, and communicates with the swirl chamber;
• the overflow pipe passes insulatively through the closed end of the swirl chamber, and communicates with the swirl chamber;
• a wall of the swirl chamber and the overflow pipe are made of a conductive material;
• the open end of the swirl chamber faces towards the underflow pipe, and communicates with the underflow pipe through a composite curved pipe section;
• and the composite curved pipe section is coaxial with the swirl chamber;
• on an axial section of the swirl, an inner wall of the composite curved pipe section comprises a concave arc transition section, a straight cone transition section and a convex elliptical arc transition section connected sequentially;
• and
• a first end of the concave arc transition section is connected to the open end of the swirl chamber;
• an inner diameter of the first end of the concave arc transition section is equal to an inner diameter of the swirl chamber;
• a first end of the straight cone transition section is tangent to a second end of the concave arc transition section;
• a second end of the straight cone transition section is tangent to a first end of the convex elliptical arc transition section;
• a second end of the convex elliptical arc transition section is connected to the underflow pipe;
• the first end of the concave arc transition section is larger than the second end of the concave arc transition section in diameter;
• the first end of the straight cone transition section is larger than the second end of the straight cone transition section in diameter;
• the first end of the convex elliptical arc transition section is larger than the second end of the convex elliptical arc transition section in diameter;
• and an inner diameter of the second end of the convex elliptical arc transition section is equal to an inner diameter of the underflow pipe.