Mounting assembly for a bundle of a compressor

Patent metadata

Field	Value
Publication number	US-2016281533-A1
Application number	US-201615073850-A
Country	US
Kind code	A1
Filing date	Mar 18, 2016
Priority date	Mar 27, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

A mounting assembly for assembling a bundle of a compressor is provided. The mounting assembly may include a plurality of biasing members and a mechanical fastener. The plurality of biasing members may be disposed in a recess formed in a first annular body of the bundle, and may be configured to apply a biasing force to a second annular body of the bundle. The mechanical fastener may extend through a mounting flange of the second annular body and the plurality of biasing members. The mechanical fastener may be configured to couple the first annular body with the second annular body such that the first annular body and the second annular body define an axial gap therebetween.

First claim

We claim:

1 . A mounting assembly for assembling a bundle of a compressor, comprising:
a plurality of biasing members disposed in a recess formed in a first annular body of the bundle and configured to apply a biasing force to a second annular body of the bundle; and a mechanical fastener extending through a mounting flange of the second annular body and the plurality of biasing members, the mechanical fastener configured to couple the first annular body with the second annular body such that the first annular body and the second annular body define an axial gap therebetween.

2 . The mounting assembly of claim 1 , wherein a first biasing member and a second biasing member of the plurality of biasing members are oriented in opposing axial directions.

3 . The mounting assembly of claim 1 , wherein a first biasing member and a second biasing member of the plurality of biasing members are oriented in a first axial direction.

4 . The mounting assembly of claim 1 , wherein at least one biasing member of the plurality of biasing members is a Belleville washer.

5 . The mounting assembly of claim 1 , further comprising a spacer at least partially disposed in the recess between the plurality of biasing members and the mounting flange of the second annular body, and wherein the plurality of biasing members is configured to apply the biasing force to the mounting flange of the second annular body via the spacer.

6 . The mounting assembly of claim 1 , wherein the mounting flange defines a perforation extending therethrough, and the mechanical fastener extends through the perforation such that the mounting flange is slidably disposed along at least a portion of the mechanical fastener.

7 . The mounting assembly of claim 6 , wherein the mechanical fastener comprises:
a threaded portion configured to couple the mechanical fastener with the first annular body; a shoulder portion extending through the perforation such that the mounting flange is slidably disposed along the shoulder portion; and a head portion configured to engage the mounting flange.

8 . A compressor, comprising:
an internal assembly comprising a first annular body and a second annular body, the first annular body and the second annular body defining an axial gap therebetween and further defining a fluid pathway of the compressor, the fluid pathway comprising:
an inlet passageway configured to receive a process fluid;
an impeller cavity fluidly coupled with the inlet passageway;
a diffuser fluidly coupled with the impeller cavity; and
a volute fluidly coupled with the diffuser;
a casing configured to receive and at least partially support the internal assembly; and a mounting assembly configured to maintain the axial gap between the first annular body and the second annular body.

9 . The compressor of claim 8 , further comprising:
a rotary shaft disposed in the casing; and an impeller disposed in the impeller cavity and coupled with the rotary shaft.

10 . The compressor of claim 9 , wherein the impeller is configured to receive the process fluid from the inlet passageway and discharge the process fluid to the diffuser at an absolute Mach number of about 1.3 or greater.

11 . The compressor of claim 10 , wherein the compressor is configured to provide a compression ratio of at least about 10.1.

12 . The compressor of claim 11 , wherein the mounting assembly comprises:
a plurality of biasing members disposed in a recess formed in the first annular body and configured to apply a biasing force to the second annular body; and a shoulder bolt coupled with the first annular body and extending through a mounting flange of the second annular body and the plurality of biasing members, the shoulder bolt configured to at least partially maintain the axial gap between the first annular body and the second annular body.

13 . The compressor of claim 12 , wherein a first biasing member of the plurality of biasing members is oriented in a first axial direction, and a second biasing member of the plurality of biasing members is oriented in a second axial direction opposite the first axial direction.

14 . The compressor of claim 12 , wherein a first biasing member and a second biasing member of the plurality of biasing members are oriented in a first axial direction.

15 . The compressor of claim 12 , wherein at least one biasing member of the plurality of biasing members is a Belleville washer.

16 . The compressor of claim 12 , further comprising a spacer at least partially disposed in the recess between the plurality of biasing members and the mounting flange of the second annular body.

17 . The compressor of claim 12 , wherein the shoulder bolt comprises:
a threaded portion configured to couple the shoulder bolt with the first annular body; a shoulder portion configured to extend through the mounting flange such that the mounting flange is slidably disposed along the shoulder portion of the shoulder bolt; and a head portion configured to engage the mounting flange.

18 . A compressor, comprising:
an internal assembly comprising a first annular body and a second annular body, the first annular body and the second annular body defining an axial gap therebetween and further defining a fluid pathway of the compressor, the fluid pathway comprising:
an inlet passageway;
an impeller cavity fluidly coupled with the inlet passageway;
a diffuser fluidly coupled with the impeller cavity; and
a volute fluidly coupled with the diffuser;
a casing configured to receive and at least partially support the internal assembly; and at least one mounting assembly configured to maintain the axial gap between the first annular body and the second annular body, the mounting assembly comprising:
a plurality of biasing members disposed in a recess formed in the first annular body and configured to apply a biasing force to the second annular body; and
a mechanical fastener extending through a mounting flange of the second annular body and the plurality of biasing members, the mechanical fastener coupled with the first annular body such that the first annular body and the second annular body define the axial gap therebetween.

19 . The compressor of claim 18 , wherein the inlet passageway is configured to receive a process fluid comprising carbon dioxide.

20 . The compressor of claim 19 , further comprising:
a rotary shaft disposed in the casing; and an impeller disposed in the impeller cavity and coupled with the rotary shaft, the impeller configured to receive the process fluid from the inlet passageway and discharge the process fluid to the diffuser at an absolute Mach number of about 1.3 or greater, wherein the compressor is configured to provide a compression ratio of at least about 10:1.

Assignees

• Peer David J
• Edmonds Ryan
• Sorokes James M
• Kuzdzal Mark J
• Dresser-Rand Company

Inventors

• Peer David J
• Edmonds Ryan
• Sorokes James M
• Kuzdzal Mark J

Classifications

• F01D25/145 Primary

  Thermally insulated casings · CPC title

• F01D25/28

  Supporting or mounting arrangements, e.g. for turbine casing · CPC title

• F01D25/243

  Flange connections; Bolting arrangements (F01D25/265 takes precedence) · CPC title