Systems and devices for pumping and controlling high temperature fluids

Patent metadata

Field	Value
Publication number	US-10808694-B2
Application number	US-201715677801-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Aug 15, 2016
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

The disclosed technology includes pumps, pipes, valves, seals, and systems for pumping and controlling high temperature fluids, such as liquid tin, at temperatures of between 1000-3000° C. The systems and device may be partially or entirely constructed using brittle materials, such as ceramics, that are capable of withstanding extreme heat without significantly degrading, and may be secured using components made of refractory metals, such as tungsten. The systems and devices may utilize static and dynamic seals made from brittle materials, such as graphite, to enable the high temperature operation of such pumps, pipes, valves, and systems without leakage.

First claim

We claim:

1. A pump comprising:
pump components comprising:
a pump body made at least in part by a first brittle material;
a seal comprised of a second brittle material;
a first plate;
a second plate comprising:
a fluid inlet; and
a fluid outlet;

a shaft; and
securing members;

wherein the pump body comprises:
a closed face having an aperture for receiving a shaft;
an open face;
a chamber disposed between the closed face and the open face, the chamber having a first side, a second side, and housing at least a first gear; and
a first plurality of apertures for receiving the securing members;

wherein the first plate is positioned externally to the closed face of the pump body, and having an aperture for receiving a shaft;
wherein the second plate is attached to the pump body at the open face such that the chamber is enclosed, and the fluid inlet is in communication with the first side of the chamber and the fluid outlet is in communication with the second side of the chamber;
wherein the first gear is attached to the shaft;
wherein the first plate is made of one of the first brittle material and a refractory metal, and has a second plurality of apertures for receiving the securing members; and
wherein the second plate is made of the first brittle material;
wherein the securing members are made of a refractory metal and are disposed in the first and second plurality of apertures to secure the first plate to the pump body;
wherein the seal is disposed between the pump body and the second plate; and
wherein the pump is configured to operate at temperatures between 500° C. and 3000° C.

2. The pump of claim 1 further comprising a second gear housed within the chamber, the second gear comprises a plurality of teeth with a full radius fillet dedendum.

3. The pump of claim 2 , wherein the first gear comprises a plurality of teeth with a full radius fillet dedendum, and wherein the first gear and second gear are configured to rotatably engage each other.

4. The pump of claim 1 , wherein the refractory metal is tungsten; and
wherein the seal is a graphite sheet.

5. The pump of claim 1 , wherein the pump components further comprise a packing seal positioned around a portion of the shaft positioned within the chamber to form a seal between the shaft and an internal surface of the pump body.

6. The pump of claim 5 , wherein the packing seal is configured to be tightened in response to a tightening of at least a portion of the securing members.

7. The pump of claim 5 , wherein the packing seal comprises packing rope wrapped around the shaft; and
wherein the packing rope comprises a soft and compressible graphite.

8. The pump of claim 1 , wherein the pump components include stationary pump components and moveable pump components;
wherein the pump components further comprise a second seal comprising the second brittle material;
wherein the seal is a static seal; and
wherein the second seal is a dynamic seal located between at least a portion of two adjacent moveable pump components.

9. A pump comprising:
pump components comprising:
a pump body made at least in part by a first brittle material;
a first plate;
a second plate comprising:
a fluid inlet; and
a fluid outlet; and

a fluid connection adapter attached to the second plate, the fluid connection adapter being made of a brittle material and comprising:
a first thread configured to be attached to the fluid inlet or fluid outlet, the first thread being hollow; and
a second thread comprising:
an aperture configured to receive the end of a pipe having a graphite ferrule that is configured to expand radially to form a seal between the pipe and the second thread in response to an axial force; and
threading configured to receive a nut;

wherein the pump body comprises:
a closed face having an aperture for receiving a shaft;
an open face; and
a chamber disposed between the closed face and the open face, the chamber having a first side, a second side, and housing at least a first gear;

wherein the first plate is positioned externally to the closed face of the pump body, and having an aperture for receiving a shaft;
wherein the second plate is attached to the pump body at the open face such that the chamber is enclosed, and the fluid inlet is in communication with the first side of the chamber and the fluid outlet is in communication with the second side of the chamber; and
wherein the pump is configured to operate at temperatures between 500° C. and 3000° C.

10. The pump of claim 9 , wherein the pump components further comprise a seal comprised of a second brittle material.

11. The pump of claim 9 , wherein the pump components include stationary pump components and moveable pump components;
wherein a static seal comprised of a second brittle material is located between at least a portion of two adjacent stationary pump components; and
wherein a dynamic seal comprised of the second brittle material is located between at least a portion of two adjacent moveable pump components.

12. The pump of claim 9 further comprising a second gear housed within the chamber, the second gear comprises a plurality of teeth with a full radius fillet dedendum.

13. The pump of claim 12 , wherein the first gear comprises a plurality of teeth with a full radius fillet dedendum, and wherein the first gear and second gear are configured to rotatably engage each other.

14. The pump of claim 9 , wherein the pump components further comprise a packing seal positioned around a portion of the shaft positioned within the chamber to form a seal between the shaft and an internal surface of the pump body.

15. The pump of claim 14 , wherein the packing seal is configured to be tightened in response to a tightening of at least a portion of the securing members;
wherein the packing seal comprises packing rope wrapped around the shaft; and
wherein the packing rope comprises a soft and compressible graphite.

16. A pump and motor system comprising:
a pump comprising:
pump components comprising:
a pump body made at least in part by a first brittle material;
a first plate;
a second plate comprising:
a fluid inlet; and
a fluid outlet;

wherein the pump body comprises:
a closed face having an aperture for receiving a shaft;
an open face; and
a chamber disposed between the closed face and the open face, the chamber having a first side, a second side, and housing at least a first gear;

wherein the first plate is positioned externally to the closed face of the pump body, and having an aperture for receiving a shaft;
wherein the second plate is attached to the pump body at the open face such that the chamber is enclosed, and the fluid inlet is in communication with the first side of the chamber and the fluid outlet is in communication with the second side of the chamber; and
wherein the pump is configured to operate at temperatures between 500° C. and 3000° C.; and

a motor configured to operate at temperatures between 0° C. and 300° C.;
an insulating shaft that mechanically connects the pump to the motor;
a motor shaft attached to the motor;
the insulating shaft positioned between a pump shaft and the motor shaft, the insulating shaft comprising a second coupler configured to rotatably engage a first coupler of the pump shaft;
a flexible joint that attaches the insulating shaft to the motor shaft; and
a bearing mount comprising a plate with an aperture configured to support the insulating shaft, wherein the bearing mount enables insulating shaft to be angularly flexible but axially constrained;
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Assignees

• Georgia Tech Res Inst

Inventors

• Henry Asegun
• Amy Caleb
• Bagepalli Malavika
• Budenstein Daniel
• England Diane
• Kelsall Colin

Classifications

• F16K5/0242

  Spindles and actuating means · CPC title

• F04C13/00

  Adaptations of machines or pumps for special use, e.g. for extremely high pressures (of pumps specially adapted for elastic fluids F04C25/00) · CPC title

• F04C2/18

  with similar tooth forms (F04C2/16 takes precedence) · CPC title

• F05C2203/08

  Ceramics; Oxides · CPC title

• F04C2/084 Primary

  Toothed wheels · CPC title