Multi-action on multi-surface seal with turbine scroll retention method in gas turbine engine

The gas turbine engine comprising:

• a turbine scroll inside a combustor housing;
• a forward discourager;
• an aft discourager;
• a B-width, measured between the forward discourager and the aft discourager;
• a forward axial seal adjacent to the forward discourager;
• an aft axial seal adjacent to the aft discourager;
• the forward discourager comprising a 90-degree bending angle;
• an aft discourager comprising a 90-degree bending angle;
• a radial nozzle engaged with a forward bayonet on the forward side of the turbine scroll;
• the forward bayonet contacting the radial nozzle at a bayonet engagement point;
• an aft scroll ring;
• a retaining ring adjacent the aft scroll ring;
• the retaining ring securing the turbine scroll while maintaining an axial loading point on the aft scroll ring;
• and
• a forward scroll ring;
• the retaining ring restraining displacement of forward scroll ring and the aft scroll ring.

A gas turbine engine comprising:

• a turbine scroll inside a combustor housing;
• the turbine scroll comprising four pairs of sealing surfaces;
• a B-width, measured between a forward discourager and an aft discourager, wherein said B-width is kept constant by action of said four pairs of sealing surfaces;
• the forward discourager and the aft discourager comprising a 90-degree bending angle for flow restriction;
• a forward bayonet adjacent the forward side of the turbine scroll;
• the forward bayonet contacting a radial nozzle at a bayonet engagement point;
• a retaining ring adjacent an aft scroll ring;
• the retaining ring securing the turbine scroll while maintaining an axial loading point on the aft scroll ring;
• and
• a forward scroll ring;
• the retaining ring restraining displacement of the forward scroll ring and the aft scroll ring.

A gas turbine engine comprising:

• a compressor section;
• a combustor section;
• a compressor scroll;
• a turbine scroll inside a combustor housing;
• a forward discourager;
• an aft discourager;
• a B-width, measured between the forward discourager and the aft discourager;
• a forward axial seal adjacent to the forward discourager;
• an aft axial seal adjacent to the aft discourager;
• the forward discourager and the aft discourager comprising a 90-degree bending angle for flow restriction;
• a radial nozzle engaged with a forward bayonet on the forward side of the turbine scroll in six locations;
• the forward bayonet contacting the radial nozzle at a bayonet engagement point;
• a radial seal on the forward side of the B-width;
• a radial seal on the aft side of the B-width;
• a retaining ring adjacent an aft scroll ring;
• the retaining ring securing the turbine scroll while maintaining an axial loading point on the aft scroll ring;
• and
• a forward scroll ring;
• the retaining ring restraining displacement of forward scroll ring and the aft scroll ring.