Shut-off device for pipelines

• US 9,464,726 B2
• Filed: 09/08/2014
• Issued: 10/11/2016
• Est. Priority Date: 05/30/2006
• Status: Active Grant

• Current Assignee: Neles Finland OY (Neles Oyj)
• Original Assignee: Metso Flow Control Oy (Neles Oyj)
• Inventors: Gerceker, Metin
• Primary Examiner(s): Bastianelli, John
• Application Number:
  US14/479,961
• Publication Number:
  US 20140374638A1
• Time in Patent Office: 764 Days
• Field of Search: 251305-308, 251360-363, 251/315.12
• US Class Current: 1/1
• CPC Class Codes: F16K 27/0218 Butterfly valves
• CPC Class Codes: Y02E 60/32 Hydrogen storage

Abstract

A shut-off device for low-temperature media includes a housing (2), a valve seat (5) located in the housing (2), and a valve (3) that cooperates with the valve seat and is pivotally supported in the housing (2). On the housing (2) there is at least one flange (10) for mounting the shut-off device in a pipeline. The low-temperature shut-off device, low construction cost and low maintenance cost is achieved because 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 a weld joint, especially a butt weld joint, and because the housing (2) is provided with a housing opening (11) for mounting and/or removing the valve (3).

Claims

1. Low-temperature shut-off device (1) for use in a pipeline transporting cryogenic media, the device (1) comprising:

a single housing (2), a valve seat (5) arranged in the housing (2), and a butterfly valve (3) that cooperates with the valve seat (5) to open and shut-off the device (1) and is mounted to rotate in the housing (2), wherein the housing (2) has at least one end flange (10a or 10b) configured to attach the shut-off device (1) to a pipeline, the end flange (10a or 10b) of the housing (2) being a welding flange (10a, 10b) to attach the shut-off device (1) to the pipeline and configured as a butt-welded joint, the housing (2) being provided with a housing opening (11) for installation and removal of the butterfly valve (3);

the valve seat (5) being defined by a valve seat component (6), which valve seat component (6) is removably attached within the housing (2) by a screw receiving flange (7) in the housing (2);

the butterfly valve (3) being connected to a drive shaft (4) mounted in a bearing component (12) having a lateral extent sufficient to cover and close the housing opening (11), the bearing component (12), drive shaft (4) and butterfly valve (3) being connected to one another so as to be removable from the housing (2) as an integral assembly, the bearing component (12) being removably attached to the housing (2) adjacent to the housing opening (11), and the valve seat component (6) being installed in and removable from the housing (2) through the housing opening (11) while the housing (2) is in place in a pipeline.

2. 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).

3. 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.

4. Shut-off device according to claim 1, 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).

5. Shut-off device according to claim 1, wherein a drive means (19) that is dynamically connected to the drive shaft (4) is mounted on the bearing component (12).

6. Shut-off device according to claim 1, wherein a mounting flange (13), is made on the housing opening (11) for attachment of the bearing component (12).

7. Shut-off device according to claim 6, wherein there is a centering and/or sealing means (15) between the mounting flange (13) and the bearing component (12).

8. Shut-off device according to claim 7, wherein the centering and/or sealing means (15) is designed as a projection that is located in a peripheral groove.

9. The shut-off device of claim 6, wherein a mounting flange (13) is a screw flange.

10. The low temperature shut-off device (1) of claim 9, wherein the bearing component (12) is unitary.

11. The low temperature butterfly valve (3) of claim 1, wherein the butterfly valve is a disc valve.