Valve body insert apparatus and related methods

Patent metadata

Field	Value
Publication number	US-11525516-B2
Application number	US-202017035117-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	Oct 7, 2015
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

Valve body insert apparatus and related methods are described. An example method includes inserting a first sleeve in a drive shaft bore of a valve body. The first sleeve is to line a first inner surface of the drive shaft bore to protect the first inner surface of the drive shaft bore from corrosion or erosion, and the first sleeve defining a first opening to receive a drive shaft. The method includes applying cladding to wetted surfaces of the valve body defining a fluid flow passageway and to at least a portion adjacent a first end of the first sleeve positioned in the fluid flow passageway, where cladding material is not applied to portions of the first inner surface of the drive shaft bore covered by the first sleeve.

First claim

What is claimed is:

1. A method comprising:
inserting a first sleeve in a drive shaft bore of a valve, the first sleeve to line a first inner surface of the drive shaft bore to protect the first inner surface of the drive shaft bore from corrosion or erosion, the first sleeve defining a first opening to receive a drive shaft; and
applying cladding, via at least one of fusion or welding, to wetted surfaces of a valve body, defining a fluid flow passageway including inlet and outlet passages of the valve body, and to at least a portion adjacent a first end of the first sleeve positioned in the fluid flow passageway, wherein cladding material is not applied to portions of the first inner surface of the drive shaft bore covered by the first sleeve.

2. The method as defined in claim 1 , further comprising welding an outer wall of the first sleeve to the valve body.

3. The method of claim 1 , wherein the valve body is a unitary, single piece structure.

4. The method as defined in claim 1 , further comprising positioning a first bushing in a second opening of the first sleeve.

5. The method as defined in claim 4 , further comprising positioning a packing assembly in a third opening of the first sleeve.

6. The method as defined in claim 5 , further comprising inserting a second sleeve in a follower shaft bore of the valve body.

7. The method as defined in claim 6 , further comprising positioning a second bushing in a first opening of the second sleeve.

8. The method as defined in claim 7 , further comprising positioning the drive shaft through the first opening of the first sleeve and at least partially through the first opening of the second sleeve and coupling a closure member to the drive shaft.

9. The method as defined in claim 1 , further comprising applying cladding to a portion of the drive shaft bore adjacent a second end of the first sleeve opposite the first end.

10. A method comprising:
obtaining a valve body having a fluid flow passageway and a first shaft bore;
positioning a first insert in the first shaft bore, the first insert having a first edge recessed relative to a first end of the first shaft bore and a second edge to at least partially extend in the fluid flow passageway beyond a second end of the first shaft bore opposite the first end;
applying a first cladding material to wetted surfaces of the fluid flow passageway including inlet and outlet passages of the valve body and to the second edge of the first insert to encase the second edge of the first insert extending in the fluid flow passageway; and
applying a second cladding material, via at least one of fusion or welding, adjacent the first end of the first shaft bore to at least partially encase the first edge of the first insert such that the first insert is positioned between the first cladding material and the second cladding material.

11. The method as defined in claim 10 , further comprising positioning a bushing in a second opening of the first insert prior to applying the second cladding to the first end of the first shaft bore.

12. The method as defined in claim 11 , further comprising positioning a packing assembly in a third opening of the first insert.

13. The method as defined in claim 10 , further comprising inserting a second insert in a follower shaft bore of the valve body.

14. The method as defined in claim 13 , further comprising positioning a second bushing in a first opening of the second insert.

15. The method as defined in claim 14 , further comprising applying a third cladding material to a portion of the second insert and the second bushing.

16. A method comprising:
obtaining a valve body made of a first material having a low corrosion or erosion resistant characteristic and defining a fluid flow passageway and a first shaft bore;
positioning a first sleeve in the first shaft bore to line a first inner surface of the first shaft bore to protect the first inner surface of the first shaft bore from corrosion or erosion, the first sleeve made of a second material different than the first material, the second material having a higher corrosion or erosion resistance characteristic than the first material, the first sleeve having a first end and a second end opposite the first end, wherein the first end is positioned adjacent a third end of the first shaft bore and the second end is positioned adjacent a fourth end of the first shaft bore; and
applying a cladding material adjacent the third end of the first shaft bore and the fourth end of the first shaft bore such that cladding material engages the first end of the first sleeve and the second end of the first sleeve, and wherein cladding material is not applied to portions of the first inner surface of the first shaft bore covered by the first sleeve.

17. The method as defined in claim 16 , further including positioning a drive shaft through a first opening of the first sleeve.

18. The method as defined in claim 16 , further comprising positioning a bushing in a counterbore of the first sleeve, the counterbore defining a first inner wall to restrict movement of the bushing, and further comprising applying cladding material to at least partially encase first sleeve and the bushing.

19. The method as defined in claim 16 , wherein the valve body defines a second shaft bore coaxially aligned with the first shaft bore, and further comprising positioning a second sleeve in the second shaft bore to line a second inner surface of the second shaft bore to protect the second inner surface of the first shaft bore from corrosion or erosion, the second sleeve made of a third material different than the first material, the third material having a higher corrosion or erosion resistance characteristic than the first material, the second sleeve having a fifth end and a sixth end opposite the fifth end, wherein the fifth end is positioned adjacent a seventh end of the second shaft bore and the sixth end is positioned adjacent an eighth end of the second shaft bore.

20. The method as defined in claim 19 , further comprising applying the cladding material adjacent the seventh end of the second shaft bore and the eighth end of the second shaft bore such that cladding material engages the fifth end of the second sleeve and the sixth end of the second sleeve, and wherein cladding material is not applied to portions of the second inner surface of the second shaft bore covered by the second sleeve.

21. The method as defined in claim 20 , further comprising positioning a bushing in a counterbore of the second sleeve, the counterbore defining an inner wall to restrict movement of the bushing, and further comprising applying cladding material to at least partially encase second sleeve and the bushing.

Assignees

• Fisher Controls Int Llc

Inventors

• Helfer Wade Jonathon

Classifications

• F16K41/026

  for rotating valves · CPC title

• F16K27/0218 Primary

  Butterfly valves · CPC title

• F16K1/2268

  Sealing means for the axis of rotation · CPC title

• F16K1/224 Primary

  Details of bearings for the axis of rotation · CPC title

• F16K1/22 Primary

  with axis of rotation crossing the valve member, e.g. butterfly valves · CPC title