A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump and between the steam la
A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump and between the steam lance and fixed steam tube in a sootblower. The assembly includes at least a pair of outer substantially rigid cylindrical bearings having an inner bore to be positioned over the cylindrical member and at least one complimentary flexible textile packing ring disposed between the two outer bearing members. In assemblies including an additional bearing, it is surrounded by at least one flexible packing on each side. The inner bore of the bearing members provide a bearing surface for eliminating whip of the moving elements in the device.
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1. A seal-bearing assembly for a mechanical device having a shaft with reciprocating movement comprising: a first substantially rigid high performance polymeric cylindrical outer bearing;a second substantially rigid high performance polymeric cylindrical outer bearing spaced apart from and axially a
1. A seal-bearing assembly for a mechanical device having a shaft with reciprocating movement comprising: a first substantially rigid high performance polymeric cylindrical outer bearing;a second substantially rigid high performance polymeric cylindrical outer bearing spaced apart from and axially aligned with the first outer bearing;at least one cylindrical textile packing member including carbon yarn adjacent to each of the first and second outer bearings; andat least one cylindrical textile packing member of one of a chemically resistant organic fiber and a high-temperature resistant organic fiber positioned between the carbon yarn packing members. 2. The seal-bearing assembly of claim 1, wherein the at least one additional cylindrical textile packing member between the packing members of carbon yarn includes chemically resistant organic fiber. 3. The seal-bearing assembly of claim 2, wherein both of the first and second outer bearings comprise polyphenylene sulfide, and at least one flexible cylindrical textile packing member includes PTFE impregnated aramid yarn and fiberglass between the carbon yarn packing members. 4. The seal-bearing assembly of claim 1, wherein at least one of the first and second outer bearings includes high-temperature polymeric material or a formulation thereof. 5. The seal-bearing assembly of claim 1, wherein the at least one cylindrical textile packing member between the packing members of carbon yarn includes a high-temperature resistant organic fiber. 6. The seal-bearing assembly of claim 1, wherein at least one of the first and second outer bearings includes a chemically resistant polymeric material or a formulation thereof. 7. The seal-bearing assembly of claim 1, wherein at least one cylindrical textile packing member is formed from a first carbon yarn flexible braided packing member disposed adjacent to the first outer bearing, a flexible cylindrical textile packing member comprising helical braided Inconel wire overbraided with carbon inserted exfoliated graphite foil is disposed adjacent to the carbon yarn packing member, a second carbon yarn flexible braided packing member is disposed adjacent to the helical braided Inconel wire packing member, and the second outer bearing is disposed adjacent to the second carbon yarn packing member. 8. The seal-bearing assembly of claim 1, wherein the polymeric material of the first and second outer bearings comprise a high-temperature polymeric material selected from the group consisting of polyphenylene sulfide, polyimidazoles, fluoropolymers, polyamideimides, polyether ether ketone polymers, and formulations thereof. 9. The seal-bearing assembly of claim 8, wherein the bearings include polybenzimidazole or a formulation thereof. 10. The seal-bearing assembly of claim 8, wherein both of the first and second outer bearings comprise polyimidazole, and at least one flexible cylindrical textile packing member includes polyimidazole and carbon yarn between the carbon yarn packing members. 11. The seal-bearing assembly of claim 1, wherein both of the first and second outer bearings comprise polybenzimidizole, and a first carbon yarn flexible braided packing member is disposed adjacent to the first outer bearing, a flexible cylindrical textile packing member including a helical braided Inconel wire overbraided with carbon inserted exfoliated graphite foil is disposed adjacent to the first carbon yarn packing member, a second carbon yarn flexible braided packing member is disposed adjacent to the helical braided Inconel wire packing member, and the second outer bearing is disposed adjacent to the second carbon yarn packing member. 12. The seal-bearing assembly of claim 11, further including a second helical braided Inconel wire packing member between the first Inconel packing member and one of the carbon yarn packing members. 13. The seal-bearing assembly of claim 1, wherein both of the first and second outer bearings comprise polybenzimidizole, and a first carbon yarn flexible braided packing member is disposed adjacent to the first outer bearing for the plunger end of a pump, a flexible cylindrical textile packing member including a helical braided Inconel wire overbraided with carbon inserted exfoliated graphite foil is disposed adjacent to the first carbon yarn flexible packing member, second and third carbon yarn flexible braided packing members are disposed adjacent to the helical braided Inconel wire packing member, and the second outer bearing is disposed adjacent to the second and third carbon yarn packing members at the spring end of the pump. 14. The seal-bearing assembly of claim 1, wherein the cylindrical textile packing material between the packing members of carbon yarn is selected from the group consisting of carbon yarns, graphitized yarns, exfoliated graphite yarns, ceramic yarns, and glass yarns. 15. The seal-bearing assembly of claim 1, wherein both of the first and second outer bearings comprise polyphenylene sulfide, a carbon yarn flexible braided packing member is disposed adjacent to each of the outer bearings, and at least one flexible cylindrical textile packing member of a helical braided Inconel wire overbraided with carbon inserted exfoliated graphite foil is disposed adjacent to and between the carbon yarn packing members.
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이 특허에 인용된 특허 (31)
Turanyi Sandor (P.O. Box 845 Stafford TX 77477), Apparatus for sealing an oil well pump polished rod.
Hipple James H. (Lancaster OH) Smith Don W. (Lancaster OH) Carpenter Steven P. (Lancaster OH) Johnston Jesse C. (Carroll OH), Hub assembly for sootblower.
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