초록 ▼

A pressure vessel having a relief area onto which a flange of a side port can be attached. The relief area includes a planar mating surface raised from the cylindrical sidewall of the vessel. A method for forming the pressure vessel includes providing a cylindrical mandrel provided with a side port

A pressure vessel having a relief area onto which a flange of a side port can be attached. The relief area includes a planar mating surface raised from the cylindrical sidewall of the vessel. A method for forming the pressure vessel includes providing a cylindrical mandrel provided with a side port spacer. Fiberglass is wrapped onto the mandrel and space. The fiberglass is impregnated with resin and the resin is cured. A metallic insert ring is embedded in a full bore open end of the pressure vessel. The ring has a cross-section having a height to width ratio of less than 0.7.

대표청구항 ▼

What is claimed is: 1. A pressure vessel comprising: a cylindrical side wall formed from resin impregnated reinforcing fibers; a generally cylindrical side port having an annular flange and an outside thread; a relief area onto which the flange can be attached, the relief area extending outward fro

What is claimed is: 1. A pressure vessel comprising: a cylindrical side wall formed from resin impregnated reinforcing fibers; a generally cylindrical side port having an annular flange and an outside thread; a relief area onto which the flange can be attached, the relief area extending outward from the cylindrical side wall; a planar mating surface at an inside face of the relief area; and a threaded bore in the mating surface threadedly receiving the port and cooperating with the outside thread of the port. 2. The pressure vessel according to claim 1, wherein the flange comprises an annular groove for accommodating an o-ring. 3. The pressure vessel according to claim 1, further comprising: an open end of the vessel; a closure inserted within the open end; and an insert ring imbedded within a wall of the vessel at the open end, the insert ring comprising a generally annular body and a cross section of the body having a height extending radially to the body and a width extending axially to the body, wherein a ratio of the height to the width is less than 0.7. 4. The pressure vessel of claim 3, further comprising a locking ring that retains the closure within the vessel, wherein an annular groove in the insert ring accommodates the locking ring. 5. The metallic insert ring of claim 3, wherein an outside surface of the annular body is tapered inward along an axial direction of the body. 6. A pressure vessel comprising: a cylindrical side wall formed from resin impregnated reinforcing fibers; a generally cylindrical side port having an annular flange and an outside thread; a relief area onto which the flange can be attached, the relief area extending outward from the cylindrical side wall; a planar mating surface at an inside face of the relief area; a threaded bore in the mating surface threadedly receiving the port and cooperating with outside thread of the port; an open end of the vessel; a closure inserted within the open end; and an insert ring imbedded within the side wall of the vessel at the open end, the insert ring comprising a generally annular body and a cross section of the body having a height extending radially to the body and a width extending axially to the body, wherein a ratio of the height to the width is less than 0.7. 7. The pressure vessel according to claim 6, wherein the cylindrical side wall and the relief area are formed as a unitary structure from the resin impregnated fibers. 8. The pressure vessel according to claim 6, wherein the flange comprises an annular groove for accommodating an o-ring. 9. The pressure vessel of claim 6, further comprising a locking ring that retains the closure within the vessel, wherein an annular groove in the insert ring accommodates the locking ring.