Pressure vessel
View Patent ↗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.
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.