1.-5. (canceled)
6. A turbine rotor for a gas turbine, comprising:
a turbine disk comprising an axially extending rotor blade retaining slot;
a plurality of coolable rotor blades which are assembled in each case to form rotor blade rows, each of the plurality of coolable rotor blades being arranged on the turbine disk and comprising:
a respective blade root arranged in the axially extending rotor blade retaining slot of the turbine disk, the respective blade root comprising two grooves which extend substantially azimuthally with regard to a turbine axis, and
a locking plate arranged between the respective blade root and a base of the rotor blade retaining slot, for securing rotor blades against displacement along the rotor blade retaining slot, the locking plate being fixed on the turbine disk by folds and comprising:
a plurality of cooling air holes, and
two tongues which are arranged for sealing in such a manner that the two tongues are connected to the two grooves of the respective blade root in a form-fitting manner; and
a cooling air feed passage leading to the base of the rotor blade retaining slot for feed of a cooling medium, wherein the cooling air holes of the locking plate provide a passage for the cooling medium.
7. The turbine rotor as claimed in claim 6, wherein the respective blade root has a sealing wing.
8. The turbine rotor as claimed in claim 7, wherein the sealing wing extends substantially in an axial and an azimuthal direction with regard to the turbine axis.
9. The turbine rotor as claimed in claim 7, wherein the respective blade root has two sealing wings in axial direction on both sides of respective blade root.
10. The turbine rotor as claimed in claim 8, wherein the respective blade root has two sealing wings in axial direction on both sides of respective blade root.
11. A gas- and steam turbine plant; comprising
a turbine rotor, comprising:
a turbine disk comprising an axially extending rotor blade retaining slot;
a plurality of coolable rotor blades which are assembled in each case to form rotor blade rows, each of the plurality of coolable rotor blades being arranged on the turbine disk and comprising:
a respective blade root arranged in the axially extending rotor blade retaining slot of the turbine disk, the respective blade root comprising two grooves which extend substantially azimuthally with regard to a turbine axis, and
a locking plate arranged between the respective blade root and a base of the rotor blade retaining slot, the locking plate being arranged for securing rotor blades against displacement along the rotor blade retaining slot, the locking plate being fixed on the turbine disk by folds and comprising:
a plurality of cooling air holes, and
two tongues which are arranged for sealing in such a manner that the two tongues are connected to the two grooves of the respective blade root in a form-fitting manner; and
a cooling air feed passage leading to the base of the rotor blade retaining slot for feed of a cooling medium, wherein the cooling air holes of the locking plate provide a passage for the cooling medium.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An automatic retractable and advanceable hot tub cover system comprising:
a rear cross member, with a first end and a second end;
a first boot assembly, in rotatable and slidable communication with the first end of the rear cross member;
a second boot assembly, in rotatable and slidable communication with the second end of the rear cross member;
a first rear main lift arm fixedly attached to near the first end of the rear cross member, the first rear main lift arm having a first angled end;
a second rear main lift arm fixedly attached to near the second end of the rear cross member, the second rear main lift arm having a second angled end;
a shackle connector with a first shackle connector end, and a second shackle connector end, the first shackle connector end rotatably attached to the first angled end;
a front cover lift arm, with a front cover lift arm angled end, the front cover lift arm angled end rotatably attached to the first shackle connector end;
a front cover actuator, with a front cover actuator rod, the front cover actuator rotatably attached to the first rear main lift arm, and the front cover actuator rod rotatably attached to the second shackle connector end;
a front actuatorcover connector-damper, with a damper rod, the front actuatorcover connector-damper rotatably attached to a distal end of the front cover lift arm, and the damper rod rotatably attached to the second shackle connector end; and
a right cover lift actuator, with a right cover lift actuator rod, the right cover lift actuator rotatably attached to the first boot assembly, and the right cover lift actuator rod rotatably attached to the first rear main lift arm.
2. The automatic retractable and advanceable hot tub cover system of claim 1, further comprising:
a first boot wall attached to the first boot assembly;
a first vertical slot located in the first boot wall, the first vertical slot having a top end and a bottom end, the first end of the rear cross member in slideable communication with the first vertical slot;
a second boot wall attached to the second boot assembly;
a second vertical slot located in the second boot wall, the second vertical slot having a top end and a bottom end, the second end of the rear cross member in slideable communication with the second vertical slot;
a latch pivotally attached to the first boot wall, and configured to at times support the rear cross member near the top end of the first vertical slot when the latch is in a latched orientation;
a solenoid attached to the first boot wall;
a yoke rod in operable communication with the solenoid and rotatably attached to the latch;
a yoke rod spring attached to the yoke rod, the yoke rod spring tending push the yoke rod in a direction that tends to keep the latch in a latched orientation; and
wherein when the solenoid is activated, the solenoid moves the yoke rod such that it causes the latch to move to an unlatched orientation.
3. The automatic retractable and advanceable hot tub cover system of claim 1, further comprising:
a boot door rotatably attached to the first boot assembly; and
a boot activation rod rotatably attached to the right cover lift actuator and rotatably attached to the boot door.
4. The automatic retractable and advanceable hot tub cover system of claim 1, further comprising:
a hot tub located adjacent to the first and second boot assembly;
a hot tub cover with an articulable seam located generally across the center of the hot tub cover; a front portion of the hot tub cover located on side of the articulable seam, and a rear portion of the hot tub cover located on the other side of the articulable seam; and
wherein the front portion of the hot tub cover is attached to the front cover lift arm and the rear portion of the hot tub cover is attached to the a first rear main lift arm and the second rear main lift arm.
5. The automatic retractable and advanceable hot tub cover system of claim 4, wherein the automatic retractable and advanceable hot tub cover system is configured to fold and unfold the hot tub cover about the articulable seam.
6. The automatic retractable and advanceable hot tub cover system of claim 5, wherein the automatic retractable and advanceable hot tub cover system is configured to rotate the folded hot tub cover such that it is generally perpendicular to horizontal.
7. The automatic retractable and advanceable hot tub cover system of claim 6, wherein the automatic retractable and advanceable hot tub cover system is configured to lower the generally perpendicular to horizontal folded hot tub cover into the first and second boot assembly, and wherein further the automatic retractable and advanceable hot tub cover system is configured to raise the generally perpendicular to horizontal folded hot tub cover from the first and second boot assembly.
8. The automatic retractable and advanceable hot tub cover system of claim 1, wherein the the first angled end, second angled end, and front cover lift arm angled end each have an angle with respect to horizontal of between about 2\xb0 to about 60\xb0.
9. The automatic retractable and advanceable hot tub cover system of claim 1, wherein the the first angled end, second angled end, and front cover lift arm angled end each have an angle with respect to horizontal of about 4\xb0.