Flow control device for mitigating thermal stratification in mixing tee pipe

Patent metadata

Field	Value
Publication number	US-10406490-B2
Application number	US-201715710787-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Nov 1, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A flow control device for mitigating thermal stratification in a mixing tee pipe includes a mixing bowl provided as an empty sphere; a main pipe having a tubular shape, through which a fluid flows, and coupled to the mixing bowl in linkage with the mixing bowl; a branch pipe having a tubular shape, through which a fluid flows, and coupled to the mixing bowl in linkage with the mixing bowl; and a mixing tee pipe having a tubular shape, through which the fluid in the mixing bowl flows, and coupled to the mixing bowl in linkage with the mixing bowl, wherein a fluid introduced from the main pipe and a fluid introduced from the branch pipe are mixed in the mixing bowl and discharged through the mixing tee pipe.

First claim

What is claimed is:

1. A flow control device for mitigating thermal stratification in a mixing tee pipe, the flow control device comprising:
a mixing bowl having an empty sphere shape;
a main pipe having a tubular shape and connected to the mixing bowl, wherein a fluid flows through the main pipe;
a branch pipe having a tubular shape and connected to the mixing bowl, wherein a fluid flows through the branch pipe;
a mixing tee pipe having a tubular shape, through which a fluid in the mixing bowl flows, and connected to the mixing bowl, wherein the fluid introduced from the main pipe and the fluid introduced from the branch pipe are mixed in the mixing bowl and are discharged through the mixing tee pipe; and
an ejector and a mixer arranged in the mixing bowl, wherein the ejector has an empty cylindrical shape and is disposed in an area where the main pipe and the mixing bowl are connected to each other, the ejector has an open bottom surface in communication with the main pipe and comprises a plurality of first holes in a side surface and a top surface thereof, the mixer has an empty cylindrical shape and is disposed in an area where the mixing tee pipe and the mixing bowl are connected to each other, and the mixer comprises a plurality of second holes in a side surface thereof and a plurality of third holes in a top surface thereof, so that the mixer communicates with the mixing tee pipe through the plurality of third holes, and wherein the plurality of first holes of the ejector comprise first side surface holes formed in the side surface of the ejector and a first top surface hole formed in the top surface of the ejector, the first side surface holes and the plurality of second holes are configured to have diameters that gradually increase or reduce in a predetermined direction, and a direction in which the diameters of the first side surface holes increase or reduce and a direction in which the diameters of the plurality of second holes increase or reduce are opposite each other.

2. The flow control device of claim 1 , wherein the plurality of first holes have different diameters from one another, the plurality of second holes have different diameters from one another, and the plurality of third holes have different diameters from one another.

3. The flow control device of claim 1 , wherein the ejector and the mixer arranged in the mixing bowl are spaced apart from each other to form a separate space therebetween.

4. The flow control device of claim 1 wherein the ejector further comprises lower side holes having the same diameter, and the first side surface holes have diameters that are gradually reduced from a direction facing the branch pipe to a direction opposite the direction facing the branch pipe.

5. The flow control device of claim 1 , wherein the first top surface hole is located in a portion of the top surface closest to the branch pipe.

6. The flow control device of claim 1 , wherein the plurality of second holes of the mixer have diameters that are gradually increased from a direction facing the branch pipe to a direction opposite the direction facing the branch pipe.

7. The flow control device of claim 1 , wherein a top surface of the mixer comprises a discharge plate that is formed as a perforated plate including the plurality of third holes.

Assignees

• Kepco Eng And Construction Company Inc
• Kepco Eng & Constr Co Inc

Inventors

• Kim Kwangchu

Classifications

• F16L55/07

  Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (apparatus for draining F16T) · CPC title

• F16L41/021

  T- or cross-pieces (F16L41/025, F16L41/026, F16L41/028 take precedence) · CPC title

• F15D1/025 Primary

  by means of orifice or throttle elements · CPC title

• F15D1/04

  Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow · CPC title

• F16L55/00

  Devices or appurtenances for use in, or in connection with, pipes or pipe systems (F16L1/00 - F16L53/00, F16L57/00, F16L59/00 take precedence; repairing or joining pipes on or under water F16L1/26; cleaning of pipes B08B9/02, e.g. removal of blockages B08B9/027; devices for preventing bursting of water pipes by freezing E03B7/10) · CPC title