Rotary machine and method for the heat exchange in a rotary machine

Patent metadata

Field	Value
Publication number	US-2016348687-A1
Application number	US-201515116633-A
Country	US
Kind code	A1
Filing date	Feb 2, 2015
Priority date	Feb 19, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

A rotary machine for conveying a fluid includes a drive unit configured to drive a shaft, an impeller arranged at the shaft, and configured to convey the fluid, at least one mechanical seal configured to seal the shaft, a first and a second heat exchange system configured to cool or heat the mechanical seal, the first heat exchange system configured for direct application of a fluid heat carrier at the mechanical seal and the second heat exchange system comprising a heat exchange jacket capable of having a fluid heat carrier flow therethrough without direct contact with the mechanical seal, the first and the second heat exchange systems forming a common heat exchange system in which a common fluid heat carrier is capable of being circulated, and a fan wheel configured to circulate the common fluid heat carrier in the common heat exchange system.

First claim

1 . A rotary machine for conveying a fluid, comprising:
a drive unit configured to drive a shaft; an impeller arranged at the shaft, and configured to convey the fluid; at least one mechanical seal configured to seal the shaft; a first and a second heat exchange system configured to cool or heat the mechanical seal, the first heat exchange system configured for direct application of a fluid heat carrier at the mechanical seal and the second heat exchange system comprising a heat exchange jacket capable of having a fluid heat carrier flow therethrough without direct contact with the mechanical seal, the first and the second heat exchange systems forming a common heat exchange system in which a common fluid heat carrier is capable of being circulated; and a fan wheel configured to circulate the common fluid heat carrier in the common heat exchange system.

2 . A rotary machine in accordance with claim 1 , wherein the rotary machine is a pump, and the drive unit comprises a motor arranged in a motor housing.

3 . A rotary machine in accordance with claim 2 , wherein the impeller is arranged in a pump housing connected to the motor housing forming a common housing.

4 . A rotary machine in accordance with claim 1 , wherein the drive unit is arranged above a pump unit in a normal position of use.

5 . A rotary machine in accordance with claim 2 , wherein the motor housing is filled with a sealing liquid in an operating state.

6 . A rotary machine in accordance with claim 5 , wherein the sealing liquid is the common fluid heat carrier.

7 . A rotary machine in accordance with claim 1 , wherein the fan wheel is driven for the circulation of the heat carrier by the drive unit and is disposed at a side of the drive unit remote from the impeller.

8 . A rotary machine in accordance with claim 1 , wherein the rotary machine is an undersea pump.

9 . A method, comprising:
operating the rotary machine of claim 1 to convey hot fluids having temperature of at least 150° C.

10 . A method for heat exchange in a rotary machine for conveying a fluid, the rotary machine having a drive unit for driving a shaft, an impeller arranged at the shaft for conveying the fluid, at least one mechanical seal for sealing the shaft, the method comprising:
cooling or heating the mechanical seal with a first and a second heat exchange system, by directly applying a fluid heat carrier by the first heat exchange system; and flowing a fluid heat carrier through a heat exchange jacket without direct contact with the mechanical seal in the second heat exchange system; the first and the second heat exchange systems being connected to a common heat exchange system, circulating a common fluid heat carrier in the common heat exchange system; and circulating the common fluid heat carrier in the common heat exchange system by a fan wheel.

11 . A method in accordance with claim 10 , wherein the common heat exchange system is a cooling system.

12 . A method in accordance with claim 10 , wherein the rotary machine is a pump, and the drive unit comprises a motor arranged in a motor housing, using the fluid heat carrier as a sealing liquid with which the motor housing is filled and wherein the fan wheel is preferably driven by the drive unit.

13 . A method in accordance with claim 10 , wherein the fluid heat carrier is a water-based liquid.

14 . A method in accordance with claim 10 , wherein the fluid to be conveyed has a temperature of at least 150° C.

15 . A method in accordance with claim 10 , wherein the rotary machine is an undersea pump.

Assignees

• Sulzer Management Ag

Inventors

• Gassmann Simon
• Trottmann Benedikt
• Inforsati Marcelo
• Felix Thomas

Classifications

• F04D29/128 Primary

  with special means for adducting cooling or sealing fluid · CPC title

• F04D7/06

  the fluids being hot or corrosive, e.g. liquid metals · CPC title

• F04D29/5873

  flow schemes and regulation thereto · CPC title

• F04D13/08

  for submerged use · CPC title

• F04D29/588 Primary

  cooling or heating the machine (F04D29/5886, F04D29/5893 take precedence) · CPC title