Flow machine

Patent metadata

Field	Value
Publication number	US-9920770-B2
Application number	US-201514881233-A
Country	US
Kind code	B2
Filing date	Oct 13, 2015
Priority date	Nov 7, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A flow machine with a rotor-side shaft includes: a stator-side housing in which the rotor-side shaft is mounted; a seal bushing configured to seal a gap between the stator-side housing and the rotor-side shaft; a retaining bolt configured to center the seal bushing at the stator-side housing in a heat-resilient manner; and a clamp configured to fix the seal bushing in a positively engaging manner at the stator-side housing while ensuring a radial displaceability of the seal bushing relative to the stator-side housing.

First claim

What is claimed is:

1. A flow machine with a rotor-side shaft, the flow machine comprising:
a stator-side housing ( 10 ) in which the rotor-side shaft is mounted;
a seal bushing ( 11 ) configured to seal a gap between the stator-side housing ( 10 ) and the rotor-side shaft;
a retaining bolt ( 16 ) configured to center the seal bushing ( 11 ) at the stator-side housing ( 10 ) in a heat-resilient manner; and
a clamp ( 17 ) configured to fix the seal bushing ( 11 ) in a positively engaging manner at the stator-side housing ( 10 ) while ensuring a radial displaceability of the seal bushing ( 11 ) relative to the stator-side housing ( 10 ).

2. The flow machine according to claim 1 , wherein the clamp ( 17 ) has:
a first projection ( 21 ) configured to engage, by positive engagement, in a housing recess ( 22 ) of the stator-side housing ( 10 );
a second projection ( 23 ) configured to engage, by positive engagement, in a retaining bolt recess ( 24 ) of the retaining bolt ( 16 ); and
a third projection ( 25 ) configured to engage in a seal bushing recess ( 26 ) of the seal bushing ( 11 ),
wherein a radial dimensioning of the seal bushing recess ( 26 ) of the seal bushing ( 11 ) is greater than a radial dimensioning of the third projection ( 25 ) so as to ensure the radial displaceability of the seal bushing ( 11 ) relative to the stator-side housing ( 10 ).

3. The flow machine according to claim 2 , wherein the clamp ( 17 ) has a base body ( 15 ) extending in a radial direction and the first, second and third projections ( 21 , 23 , 25 ) protrude in relation to the base body ( 15 ) such that the clamp ( 17 ) has an E-shaped contour at one side of the base body ( 15 ) of the clamp ( 17 ).

4. The flow machine according to claim 1 , wherein the stator-side housing ( 10 ) is divided into an upper housing part ( 10 a ) and a lower housing part ( 10 b ), and the seal bushing ( 11 ) is fixed to the stator-side housing ( 10 ), by positive engagement, by the clamp ( 17 ) and an oppositely located second clamp ( 17 ) at a partial joint area located in a dividing area ( 12 ) of the stator-side housing ( 10 ).

5. The flow machine according to claim 4 , wherein the clamps ( 17 ) are diametrically opposed in the partial joint area.

6. The flow machine according to claim 1 , further comprising a first fastening screw ( 27 ) configured to extend into the stator-side housing ( 10 ) through the clamp ( 17 ) and the retaining bolt ( 16 ).

7. The flow machine according to claim 6 , wherein a second fastening screw ( 28 ) extends into the stator-side housing ( 10 ) exclusively through the clamp ( 17 ).

8. The flow machine according to claim 1 , wherein the flow machine is a turbine.

Assignees

• Bennewa Carsten
• Ebbing Hildegard
• Aschenbruck Emil
• Man Diesel & Turbo Se

Inventors

• Bennewa Carsten
• Ebbing Hildegard
• Aschenbruck Emil

Classifications

• F04D29/644

  especially adapted for elastic fluid pumps · CPC title

• F04D29/624

  especially adapted for elastic fluid pumps · CPC title

• F05D2230/642

  using maintaining alignment while permitting differential dilatation · CPC title

• F01D11/003 Primary

  by packing rings; Mechanical seals · CPC title

• F04D29/54 Primary

  Fluid-guiding means, e.g. diffusers · CPC title