Packing assembly for a pump

摘要

A header ring for use in a stuffing box comprising an annular body portion of an elastomeric material, an annular radially inward projecting sealing lip portion formed on said body portion and an annular, axially facing pedestal portion formed on said body portion, said pedestal portion defining an annularly extending radially inwardly facing pedestal surface, the sealing lip portion defining an annularly extending, radially inward facing sealing surface, the sealing surface and the pedestal surface forming a juncture, at least a portion of the pedestal portion adjacent the juncture and forming the pedestal surface and at least a portion of the sealing lip portion adjacent the juncture and forming a portion of the sealing surface being comprised of a layer of reinforced elastomeric material bonded to the body portion.

主权项

1. A header ring for use in a positive displacement reciprocating plunger-type pump, the pump adapted to displace a fluid within a subterranean well, the pump comprising:
a housing having a generally cylindrical bore extending therethrough and forming a generally radially inwardly facing housing cylindrical surface; a plunger reciprocally positioned in the bore, such that an annulus is formed between the housing cylindrical surface and the plunger; at least one annular sealing ring positioned in the annulus; and a header ring positioned in the annulus and engaged with one of the at least one annular sealing ring, wherein the header ring defines an opening through which the plunger extends, and, wherein the header ring has a resilient body comprising:
a radially inwardly extending first annular portion adjacent the opening and engaged with the plunger,an axially extending second annular portion adjacent the opening,an axially extending third annular portion opposite the opening and engaged with the housing cylindrical surface,a radially extending fourth annular portion extending between the second and third annular portions,a fifth annular portion extending between the third annular portion and the radially inwardly extending first annular portion, anda layer of a fabric reinforced elastomeric material covering the radially inwardly extending first annularportion, the axially extending second annular portion, the radially extending fourth annular portion, and the fifth annular portion as well as axially spaced sections of the third annular portion, wherein the portion of the third annular portion that extends between the axially spaced sections is not covered by the layer of a fabric reinforced elastomeric material.