Welded structural flats on cases to eliminate nozzles
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04D-017/10
출원번호
US-0014966
(2011-01-27)
등록번호
US-8672621
(2014-03-18)
발명자
/ 주소
Mohr, Byron L.
출원인 / 주소
Dresser-Rand Company
대리인 / 주소
Edmonds & Nolte, PC
인용정보
피인용 횟수 :
0인용 특허 :
34
초록▼
A casing assembly for a compressor where traditional inlet and discharge nozzles are replaced with a mounting surface created from weld filler or weld material applied to the outside surface of a casing. The weld material and a portion of the outside surface of the casing are cooperatively milled to
A casing assembly for a compressor where traditional inlet and discharge nozzles are replaced with a mounting surface created from weld filler or weld material applied to the outside surface of a casing. The weld material and a portion of the outside surface of the casing are cooperatively milled to create a generally planar or flat surface having a casing conduit centrally-disposed therein. A flange may then be coupled to the flat surface for the inlet or discharge of a process gas.
대표청구항▼
1. A casing assembly for a compressor, comprising: a barrel defining a bore concentrically-disposed within the barrel;a conduit defined in the barrel and in fluid communication with the bore; anda mounting surface formed around a perimeter of the conduit on an outside surface of the barrel, at least
1. A casing assembly for a compressor, comprising: a barrel defining a bore concentrically-disposed within the barrel;a conduit defined in the barrel and in fluid communication with the bore; anda mounting surface formed around a perimeter of the conduit on an outside surface of the barrel, at least a portion of the mounting surface formed from multiple built-up layers of a weld material and configured to be substantially planar with a remaining portion of the mounting surface. 2. The casing assembly of claim 1, wherein the remaining portion of the mounting surface further includes a section of the outside surface of the barrel. 3. The casing assembly of claim 1, wherein the mounting surface comprises a milled surface. 4. The casing assembly of claim 3, further comprising a flange connection formed into the mounting surface. 5. The casing assembly of claim 1, wherein the multiple built-up layers of the weld material are applied to the outside surface of the barrel by shielded metal arc welding, TIG welding, flux-cored arc welding, submerged arc welding, strip submerged arc welding, strip electroslag welding, or MIG welding. 6. The casing assembly of claim 1, wherein the weld material is isolated from a process gas flowing within the compressor during compressor operation. 7. The casing assembly of claim 1, wherein the conduit comprises a first conduit for the inlet of a process gas, the barrel further defining a second conduit in fluid communication with the bore for the discharge of the process gas. 8. A method of manufacturing a casing assembly for a compressor, comprising: applying multiple layers of a weld material to an outside surface of a casing around a portion of a perimeter of a conduit defined therein;heat treating the weld material to reduce residual stresses;milling the weld material and a section of the casing to create a planar mounting surface; andforming one or more bores in the planar mounting surface to couple a flange thereto and form a fluid tight seal therebetween. 9. The method of claim 8, further comprising preheating an area adjacent the conduit where the weld material is to be applied. 10. The method of claim 9, wherein the area adjacent the conduit is preheated to a temperature of between about 200° F. and about 500° F. 11. The method of claim 8, wherein applying the multiple layers of weld material to the outside surface of the casing comprises welding the weld material to the casing. 12. The method of claim 11, wherein the multiple layers of weld material are welded to the casing using a multi-pass overlay welding technique configured to melt about half of a previous weld bead. 13. The method of claim 8, further comprising applying the weld material to the outside surface of the casing to a length and width corresponding to a structural dimension of the flange. 14. The method of claim 8, wherein heat treating the weld material further comprises heat treating a heat affected zone adjacent the weld material. 15. The method of claim 14, wherein heat treating comprises increasing the temperature of the weld material and heat affected zone to a temperature of from about 1000° F. to about 1200° F. 16. A casing assembly for a compressor, comprising: a barrel defining a bore concentrically-disposed within the barrel, and the barrel having an outside surface;a conduit defined in the barrel and in fluid communication with the bore; anda mounting surface formed on the outside surface of the barrel, at least a portion of the mounting surface formed from multiple built-up layers of a weld material applied to opposing sides of the conduit about a circumference of the outside surface of the barrel, the at least a portion of the mounting surface configured to be substantially planar with a remaining portion of the mounting surface. 17. The casing assembly of claim 16, wherein the weld material is applied in multiple layers to the outside surface of the compressor casing by shielded metal arc welding, TIG welding, flux-cored arc welding, submerged arc welding, strip submerged arc welding, strip electroslag welding, or MIG welding. 18. The casing assembly of claim 16, wherein the weld material is entirely isolated from a process gas during operation of the compressor. 19. The casing assembly of claim 16, wherein the mounting surface is adapted to receive a flange and form a fluid tight seal therebetween.
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