Fluid connection and seal useful at wellheads

A fluid connection assembly, comprising:

• a fluid connection adapter having first and second adapter ends, the fluid connection adapter providing a tapered adapter wedge engagement surface on an external surface of the fluid connection adapter, the fluid connection adapter further providing at least a first adapter seal surface;
• and
• a fluid connection housing assembly having first and second housing ends, the fluid connection housing assembly including a plurality of wedges and at least a first housing seal surface;
• wherein each wedge is disposed to constrict radially;
• wherein each wedge has a wedge inner surface;
• wherein entry of the second adapter end into the first housing end causes the first adapter seal surface to sealingly contact the first housing seal surface;
• wherein entry of the second adapter end into the first housing end also causes the wedge inner surfaces to engage the fluid connection adapter via the adapter wedge engagement surface;
• wherein the first adapter seal surface is disposed to expand radially, such that when the first adapter seal surface expands radially the first adapter seal surface tightens sealing contact against the first housing seal surface;
• and
• wherein, when the fluid connection adapter is in stationary connection to a pressurized source of fluids, the fluid connection housing assembly is movable to be brought into fluid sealing engagement with the fluid connection adapter.

A fluid connection assembly, comprising:

• a fluid connection adapter having first and second adapter ends, the fluid connection adapter providing a tapered adapter wedge engagement surface on an external surface of the fluid connection adapter, the fluid connection adapter further providing at least a first adapter seal surface;
• a fluid connection housing assembly having first and second housing ends, the fluid connection housing assembly including a plurality of wedge assemblies and at least a first housing seal surface;
• the fluid connection housing assembly further providing a flanged connector received into a housing frame, wherein the wedge assemblies are affixed to the flanged connector;
• wherein each wedge assembly includes a wedge such that each wedge is disposed to constrict radially;
• wherein each wedge has a wedge inner surface;
• wherein entry of the second adapter end into the first housing end causes the first adapter seal surface to sealingly contact the first housing seal surface;
• wherein entry of the second adapter end into the first housing end also causes the wedge inner surfaces to engage the fluid connection adapter via the adapter wedge engagement surface;
• and
• wherein the first adapter seal surface is disposed to expand radially, such that when the first adapter seal surface expands radially the first adapter seal surface tightens sealing contact against the first housing seal surface.

A fluid connection assembly, comprising:

• a fluid connection adapter having first and second adapter ends, the fluid connection adapter providing a tapered adapter wedge engagement surface on an external surface of the fluid connection adapter, the fluid connection adapter further providing at least a first adapter seal surface;
• and
• a fluid connection housing assembly having first and second housing ends, the fluid connection housing assembly including a plurality of wedges and at least a first housing seal surface, the fluid connection housing assembly further including a displaceable locking ring in which the locking ring provides a locking ring engagement rib;
• wherein each wedge is disposed to constrict radially;
• wherein each wedge has a wedge inner surface and a wedge outer surface;
• wherein at least one wedge provides a wedge outer surface chamfer configured to receive the locking ring engagement rib;
• wherein entry of the second adapter end into the first housing end causes the first adapter seal surface to sealingly contact the first housing seal surface;
• wherein entry of the second adapter end into the first housing end also causes the wedge inner surfaces to engage the fluid connection adapter via the adapter wedge engagement surface;
• wherein displacement of the locking ring engages the wedge outer surfaces to urge the wedge inner surfaces to tighten against the adapter wedge engagement surface;
• wherein the first adapter seal surface is disposed to expand radially, such that when the first adapter seal surface expands radially the first adapter seal surface tightens sealing contact against the first housing seal surface;
• and
• wherein, when the locking ring engagement rib is received by at least one wedge outer surface chamfer, introduction of internal pressure within the second adapter end restrains the locking ring from disengagement from each wedge outer surface.

A fluid connection assembly, comprising:

• a fluid connection adapter having first and second adapter ends, the fluid connection adapter providing a tapered adapter wedge engagement surface on an external surface of the fluid connection adapter, the fluid connection adapter further providing at least a first adapter seal surface;
• and
• a fluid connection housing assembly having first and second housing ends, the fluid connection housing assembly including a plurality of wedges and at least a first housing seal surface, the fluid connection housing assembly further including a flanged connector and a seal insert such that the seal insert is disposed to be received into the flanged connector, wherein the first housing seal surface is on an exterior of the seal insert, wherein a longitudinal housing seal surface on the seal insert opposes a longitudinal flanged connector seal surface on the flanged connector when the seal insert is received into the flanged connector;
• wherein each wedge is disposed to constrict radially;
• wherein each wedge has a wedge inner surface;
• wherein entry of the second adapter end into the first housing end causes the first adapter seal surface to sealingly contact the first housing seal surface;
• wherein entry of the second adapter end into the first housing end also causes the wedge inner surfaces to engage the fluid connection adapter via the adapter wedge engagement surface;
• wherein the first adapter seal surface is disposed to expand radially, such that when the first adapter seal surface expands radially the first adapter seal surface tightens sealing contact against the first housing seal surface;
• and
• wherein the seal insert is disposed to expand longitudinally responsive to introduction of internal pressure within the second adapter end, causing the longitudinal housing seal surface to tighten against the longitudinal flanged connector seal surface.