SHUT-OFF DEVICE

• US 20090166572A1
• Filed: 05/30/2006
• Published: 07/02/2009
• Est. Priority Date: 06/17/2005
• Status: Abandoned Application

• Current Assignee: Metso Mapag GmbH
• Original Assignee: Metso Mapag GmbH
• Inventors: Gerceker, Metin
• Application Number:
  US11/917,697
• Publication Number:
  US 20090166572A1
• Time in Patent Office: Days
• US Class Current: 251/305
• CPC Class Codes: F16K 27/0218 Butterfly valves

Abstract

The invention relates to a shut-off device for low-temperature media, with a housing (2), a valve seat (5) located in the housing (2), and a butterfly valve (3) that triggers the valve seat and that is pivotally supported in the housing (2), on the housing (2) at least one flange (10) being formed for mounting the shut-off device in a pipeline. The object of making available a low-temperature shut-off device at low construction cost and maintenance cost is achieved according to the invention in that the flange (10) of the housing (2) is designed as a welding flange (10a, 10b) for attachment of the shut-off device (1) in the pipeline by means of a weld joint, especially a butt weld joint, and the housing (2) is provided with a housing opening (11) for mounting and/or removing the butterfly valve (3).

Claims

1. Shut-off device for low-temperature media with a housing, a valve seat located in the housing, and a butterfly valve that triggers the valve seat and that is pivotally supported in the housing, on the housing at least one flange being designed for mounting of the shut-off device in a pipeline, characterized in that the flange (10) of the housing (2) is designed as a welding flange (10a, 10b) for attachment of the shut-off device (1) in the pipeline by means of a weld joint, especially a butt weld joint, and the housing (2) is provided with a housing opening (11) for mounting and/or removing the butterfly valve (3).

2. Shut-off device according to claim 1, wherein the valve seat (5) is made on a valve seat component (6) that is detachably mounted in the housing (2) by means of a flange (7), especially a screw flange, and the valve seat component (6) can be mounted and/or removed through the housing opening (11).

3. Shut-off device according to claim 1, wherein the housing opening (11) is located perpendicular to the axis of rotation (D) of the butterfly valve (3).

4. Shut-off device according to claim 1, wherein the housing diameter (DM) of the housing (2) in the region of the welding flange (10a, 10b) corresponds to the pipe diameter of the pipeline.

5. Shut-off device according to claim 1, wherein the butterfly valve (3) is dynamically connected to a drive shaft (4) that is supported in a bearing component (12), the bearing component (12) being detachably mounted on the housing (2) in the region of the housing opening (11).

6. Shut-off device according to claim 5, wherein the drive shaft (4) has one shaft section (4a) supported in the bearing component (12) and one shaft section (4b) supported in the housing (2), the butterfly valve (3) being detachably mounted on the shaft sections (4a, 4b).

7. Shut-off device according to claim 5, wherein a drive means (19) that is dynamically connected to the drive shaft (4) is mounted on the bearing component (12).

8. Shut-off device according to claim 5, wherein a mounting flange (13), especially a screw flange, is made on the housing opening (11) for attachment of the bearing component (12).

9. Shut-off device according to claim 8, wherein there is a centering and/or sealing means (15) between the mounting flange (13) and the bearing component (12).

10. Shut-off device according to claim 9, wherein the centering and/or sealing means (15) is designed as a projection that is located in a peripheral groove.

11. Shut-off device according to claim 8, wherein a blind flange can be detachably mounted on the mounting flange (13) that is located on the housing opening (11).

12. Shut-off device according to claim 1, wherein a mounting means (20) for detachable mounting of a testing means is made on the housing (2) in the region of the welding flange (10a, 10b).

13. Shut-off device according to claim 12, wherein the mounting means (20) is designed as a peripheral groove (21) that is located on the housing (2).

14. Shut-off device according to claim 1, wherein after mounting the housing (2) in the pipeline, a test housing is provided for inspecting the butterfly valve (3) and/or the valve seat (5).

15. Shut-off device according to claim 14, wherein the bearing component (12) provided with the butterfly valve (2) and the valve seat component (6) are detachably mounted in the test housing.