US2757857A - Locking means between compressor and turbine - Google Patents
Locking means between compressor and turbine Download PDFInfo
- Publication number
- US2757857A US2757857A US336560A US33656053A US2757857A US 2757857 A US2757857 A US 2757857A US 336560 A US336560 A US 336560A US 33656053 A US33656053 A US 33656053A US 2757857 A US2757857 A US 2757857A
- Authority
- US
- United States
- Prior art keywords
- shafts
- ring
- splines
- locking
- cooperating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/026—Shaft to shaft connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/69—Redundant disconnection blocking means
- F16B2200/71—Blocking disengagement of catches or keys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32975—Rotatable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Aug. 7, 1956 5, s, s vm, JR 2,757,857
LOCKING MEANS BETWEEN COMPRESSOR AND TURBINE Original Filed June 19, 1951 2 Sheets-Sheet 1 Aug. 7, 1956 ss vm, JR 2,757,857
LOCKING MEANS BETWEEN COMPRESSOR AND TURBINE Original Filed June 19, 1951 2 Sheets-Sheet 2 United States Patent l LOCKING ME'ANS BETWEEN COMPRESSOR AND TURBINE Bennett '5. Savin, Jr., Glastonbury, Conn., assignor to United Aircraft Corporation, East Hartford, Conn., a corporation of Delaware Claims. (Cl. 230-116) The present invention relates to an arrangement for locking the compressor and turbine rotors of a gas turbine power plant together. This is a division of application Serial No. 232,398, filed June 19, 1951, now Patent No. 2,738,125.
In many gas turbine constructions, in facilitating the assembly of the power plant, it is necessary to fasten the compressor and turbine rotors together by a structure located within the rotor shafts, the arrangement being such that the locking means is accessible through either the compressor or turbine rotor. A feature of this invention is an arrangement by which to hold the rotors together with an arrangement for locking the holding means in position to prevent accidental disengagement.
Another feature of the invention is an arrangement of the holding means such that disengagement of the holding means will urge the two rotors apart to make disassembly easier.
Another feature is the construction of the holding means as a part of one of the rotors so that it becomes a part of the rotor assembly and may be balanced with the rotor.
The holding means which keeps the rotors together may be engaged or disengaged by the use of a wrench which would be inserted axially through one or the other of the rotors for engagement with the holding means so that the latter may be turned either for engagement or disengagement. A feature of the invention is a looking means for the holding device which will be unlocked by the insertion of the wrench. The invention preferably involves a locking means which is resiliently urged into operative position so that upon removal of the wrench in assembling the rotors the locking means is automatically made operative.
Other objects and advantages will be apparent from the specification and claims, and from the accompanying drawings which illustrate an embodiment of the invention.
Fig. 1 is a fragmentary sectional view of a part of a gas turbine power plant.
Fig. 2 is a fragmentary sectional view on a larger scale showing the arrangement for holding the rotors together.
Referring first to Fig. 1, the compressor 2 supplies air to one or more combustion chambers 4 in which fuel is mixed with the air and burned to supply power for the turbine 6. The compressor rotor 8 is journalled at its downstream end in bearings 10 located within the annular arrangement of combustion chambers, and the turbine rotor 12 is connected to the compressor rotor in alignment therewith so that the rotors operate in unison. In the arrangement shown the compressor is made up of a number of separate discs 14 which are held together and to an end bell 16 by a series of bolts 18. The end bell has a projecting shaft or sleeve 20 on the outer surface of which the bearings 22 are positioned. The turbine rotor includes a disc 24 on which the turbine blades 26 are carried and a projecting shaft or sleeve 28 Patented Aug. 7, 1956 which is secured to the discs as by bolts 30 and extends forwardly to be securely attached to the sleeve 20.
With reference now to Fig. 2, the sleeve 20 has splines 32 on its inner surface which engage with cooperating splines 34 on the outer surface of the sleeve 28 such that when the sleeves are secured together the splines prevent relative rotation. The sleeve 20 has an inwardly projecting flange 36 engageable by a shoulder 38 on a clamping ring 40 which is positioned within the sleeve 20. The ring 40 is threaded as at 42 to engage with cooperating threads 44 on the inner surface of sleeve 28 in such a manner that when the clamping ring is turned the sleeves are caused to move endwise with reference to each other with the splines 32 and 34 in engagement until a spacer ring 46 on the end of sleeve 28 abuts the flange 36 on sleeve 20. For the purpose of turning the clamping ring 40 the latter has splines 48 on its inner surface which are in a position to be engaged by a wrench 50 (shown in dot-dash lines) which has cooperating splines and which may be inserted through the central opening 52 in the turbine disc 24 and through the hollow sleeve 28.
For the purpose of locking the clamping ring 40 in position the ring carries on a projecting cylinder 54 a locking ring 56 which has splines 58 cooperating with splines 60 on the cylinder 54 and another row of splines 62 to cooperate with splines 64 on sleeve 20. The locking ring 56 is slidable on the cylinder 54, being resiliently urged into the locking position shown by a spring 66 surrounding the cylinder and held in position by a supporting sleeve 68. The latter is locked against axial movement by a snap ring 70 engaging in a groove 72 in the sleeve 20.
The locking ring 56 has inwardly projecting pins 74 fitting in slots 76 in the cylinder 54 and in a position to be engaged by the end of the wrench 50. It will be apparent from the dot-dash line position of the wrench that when the latter is inserted the wrench engages and moves the pins 74 to the left against the spring 66 far enough to disengage the splines 62 and 64. By so doing the clamping ring 40 is freed so that it may be turned for disengaging the rotors.
Separation of the rotors is facilitated by making the ring 68 of such a dimension that it will be engageable by the end of cylinder 54 as the clamping ring 40 is unscrewed. Thus continued turning of the clamping ring will cause the sleeves 20 and 28 to be moved apart positively thereby separating the rotors axially. Assembly or disassembly of the rotors is accordingly made possible by appropriate turning of the clamping ring 40 within the sleeves and so long as the wrench 50 is in the operative position the locking means for the ring are in inoperative position so that the clamping ring may be turned. It will be apparent that withdrawal of the wrench 50 will allow the spring 66 to move the locking ring 54 into the locking position shown so that the clamping ring cannot become disengaged.
It is to be understood that the invention is not limited to the specific embodiment herein illustrated and described, but may be used in other ways without departure from its spirit as defined by the following claims.
I claim:
1. Means for securing together, in axial alignment, two shafts the adjacent ends of which overlap, said overlapping ends having cooperating splines for preventing relative rotation of the shafts, one of said shafts being hollow, said securing means including a clamping ring having external threads thereon, one of said shafts having internal threads cooperating with the threads on said ring, the other shaft having a shoulder engaging with said ring for limiting the relative axial movement of said shafts in one direction, cooperating radial surfaces on the shafts for limiting the relative axial movement of said shafts in the other direction, such that when the ring is turned into the threaded shaft, the shafts are locked securely against relative axial movement, in combination with a locking ring for locking the clamping ring against rotation with respect to the shafts, said locking ring being axially slidable within the shaft and having both internal and external splines thereon, said clamping ring having external splines cooperating with the internal splines on the locking ring and one of said shafts having internal splines cooperating with the external splines on the locking ring, and resilient means urging said locking ring into a position to have both sets of splines in engagement.
2. Means for securing together, in axial alignment, two shafts the adjacent ends of which overlap, said overlapping ends having cooperating splines for preventing relative rotation of the shafts, one of said shafts being hollow, said securing means including a clamping ring having external threads thereon, one of said shafts having internal threads cooperating with the threads on said ring, the other shaft having a shoulder engaging with said ring for limiting the relative axial movement of said shafts in one direction, cooperating radial surfaces on the shafts for limiting the relative axial movement of said shafts in the other direction, such that when the ring is turned into the threaded shaft, the shafts are locked securely against relative axial movement, said clamping ring having wrench receiving means centrally thereof by which said clamping ring may be turned, the wrench being insertable through the hollow shaft, in combination with a locking ring for locking the clamping ring against rotation with respect to the shafts, said locking ring being axially slidable within the shafts and having both internal and external splines thereon, said clamping ring having external splines cooperating with the internal splines on the locking ring and one of said shafts having internal splines cooperating with the external splines on the locking ring, and resilient means urging said locking ring into a position to have both sets of splines in engagement, said locking ring having means thereon projecting into the wrench receiving recess for engagement with the wrench as it is inserted, such that by insertion of the wrench the locking ring is moved against the action of the resilient means to disengage one of said two sets of splines.
3. In a gas turbine power plant, a compressor rotor having a rearwardly projecting shaft, a turbine rotor having a forwardly projecting shaft, the adjacent ends of said shafts overlapping at a point between the rotors and having cooperating sets of splines thereon in engagement with one another for preventing relative rotation of the shafts, one of said shafts being hollow, and means for securing said shafts together, said securing means including a clamping ring having external threads thereon, one of said shafts having internal threads cooperating with the threads on said ring, the other shaft having a shoulder engaging with said ring for limiting the relative axial movement of said shafts in one direction, cooperating radial surfaces on the shafts for limiting the relative axial movement of said shafts in the other direction, such that When the ring is turned into the threaded shaft, the shafts are locked securely against relative axial movement, in combination with a locking ring for locking the clamping ring against rotation with respect to the shafts, said locking ring being axially slidable within the shaft and having both internal and external splines thereon, said clamping ring having external splines cooperating with the internal splines 011 the locking ring and one of said shafts having internal splines cooperating with the external splines on the locking ring, and resilient means urging said locking ring into a position to have both sets of splines in engagement.
4. In a gas turbine power plant, a compressor rotor having a rearwardly projecting shaft, a turbine rotor having a forwardly projecting shaft, the adjacent ends of said shafts overlapping at a point between the rotors and having cooperating sets of splines thereon in engagement with one another for preventing relative rotation of the shafts, one of said shafts being hollow, and means for securing said shafts together, said securing means including a clamping ring having external threads thereon, one of said shafts having internal threads cooperating with the threads on said ring, the other shaft having a shoulder engaging with said ring for limiting the relative axial movement of said shafts in one direction, cooperating radial surfaces on the shafts for limiting the relative axial movement of said shafts in the other direction, such that when the ring is turned into the threaded shaft, the shafts are locked securely against relative axial movement, said clamping ring having wrench receiving means centrally thereof by which said clamping ring may be turned, the Wrench being insertable through the hollow shaft, in combination with a locking ring for locking the clamping ring against rotation with respect to the shafts, said locking ring being axially slidable within the shafts and having both internal and external splines thereon, said clamping ring having external splines cooperating with the internal splines on the locking ring and one of said shafts having internal splines cooperating with the external splines on the locking ring, and resilient means urging said locking ring into a position to have both sets of splines in engagement, said locking ring having means thereon projecting into the wrench receiving recess for engagement with the wrench as it is inserted, such that by insertion of the wrench the locking ring is moved against the action of the resilient means to disengage one of said two sets of splines.
5. Means for securing together, in axial alignment, two shafts the adjacent ends of which overlap, said overlapping ends having cooperating splines for preventing relative rotation of the shafts, one of said shafts being hollow, said securing means including a clamping ring having external threads thereon, one of said shafts having internal threads cooperating with the threads on said ring, the other shaft having a shoulder engaging with said ring for limiting the relative axial movement of said shafts in one direction, cooperating radial surfaces on the shafts for limiting the relative axial movement of said shafts in the other direction, such that when the ring is turned into the threaded shaft, the shafts are locked securely against relative axial movement, in combination with a locking ring for locking the clamping ring against rotation with respect to the shafts, said locking ring being axially slidable Within the shaft and having both internal and external splines thereon, said clamping ring having external splines cooperating with the internal splines on the locking ring and one of said shafts having internal splines cooperating with the external splines on the locking ring, resilient means urging said locking ring into a position to have both sets of splines in engagement, and a stop ring mounted in the shaft having the shoulder thereon and spaced from said shoulder, said stop ring cooperating with said shoulder to limit the movement of said clamping ring away from said shoulder.
References Cited in the file of this patent UNITED STATES PATENTS 2,052,241 Morgan Aug. 25, 1936 2,266,283 Spengler Dec. 16, 194] 2,516,066 McLeod et a1. July 18, 1950 2,550,580 McLeod et al. Apr. 24, 1951 2,614,799 Judson et al. Oct. 21, 1952 2,650,484 Bujak Sept. 1, 1953 FOREIGN PATENTS 9,760 Great Britain at 1903 1; 710,454 France June 8, 1931
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US336560A US2757857A (en) | 1951-06-19 | 1953-02-12 | Locking means between compressor and turbine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US232398A US2738125A (en) | 1951-06-19 | 1951-06-19 | Locking means between compressor and turbine |
US336560A US2757857A (en) | 1951-06-19 | 1953-02-12 | Locking means between compressor and turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
US2757857A true US2757857A (en) | 1956-08-07 |
Family
ID=26925949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US336560A Expired - Lifetime US2757857A (en) | 1951-06-19 | 1953-02-12 | Locking means between compressor and turbine |
Country Status (1)
Country | Link |
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US (1) | US2757857A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2855230A (en) * | 1956-01-13 | 1958-10-07 | Cav Ltd | Screw locking device |
US2901214A (en) * | 1954-04-12 | 1959-08-25 | Arthur J Slemmons | Turbine wheel and shaft assembly |
US3265291A (en) * | 1963-10-18 | 1966-08-09 | Rolls Royce | Axial flow compressors particularly for gas turbine engines |
DE2303382A1 (en) * | 1972-01-27 | 1973-08-02 | Snecma | TURBO JET ENGINE |
DE2364431A1 (en) * | 1972-12-26 | 1974-06-27 | Gen Electric | GAS TURBINE ENGINE WITH POWER TURBINE SYSTEM |
DE2630558A1 (en) * | 1975-07-09 | 1977-01-20 | Snecma | GAS TURBINE ENGINE |
US20070256412A1 (en) * | 2006-05-08 | 2007-11-08 | Honeywell International, Inc. | Compressor stage assembly lock |
FR2943098A1 (en) * | 2009-03-13 | 2010-09-17 | Snecma | Device for end-to-end fixation of bearing support and inter-turbine casing hub in open rotor/unducted fan type turbine engine of airplane, has single self-lockable fixing element screwed or unscrewed in unlocking position of locking units |
US20120308389A1 (en) * | 2010-12-08 | 2012-12-06 | Thomas Harbin | Locking nut assembly |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190309760A (en) * | 1903-04-30 | 1904-03-03 | George William Wheeler | Improvements in Machines for Sweeping Chimneys and Flues and for Cleaning out Drains and other similar Passages. |
FR710454A (en) * | 1930-02-05 | 1931-08-24 | Ljungstroms Angturbin Ab | Cantilevered, split shaft steam or gas turbine |
US2052241A (en) * | 1934-03-26 | 1936-08-25 | Timken Axle Co Detroit | Locking device |
US2266283A (en) * | 1939-12-21 | 1941-12-16 | Bendix Aviat Corp | Coupling |
US2516066A (en) * | 1942-04-27 | 1950-07-18 | Power Jets Res & Dev Ltd | Rotor assembly |
US2550580A (en) * | 1945-01-16 | 1951-04-24 | Power Jets Res & Dev Ltd | Flexible coupling for shafts and the like |
US2614799A (en) * | 1946-10-02 | 1952-10-21 | Rolls Royce | Multistage turbine disk construction for gas turbine engines |
US2650484A (en) * | 1947-05-29 | 1953-09-01 | Vickers Inc | Power transmission |
-
1953
- 1953-02-12 US US336560A patent/US2757857A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190309760A (en) * | 1903-04-30 | 1904-03-03 | George William Wheeler | Improvements in Machines for Sweeping Chimneys and Flues and for Cleaning out Drains and other similar Passages. |
FR710454A (en) * | 1930-02-05 | 1931-08-24 | Ljungstroms Angturbin Ab | Cantilevered, split shaft steam or gas turbine |
US2052241A (en) * | 1934-03-26 | 1936-08-25 | Timken Axle Co Detroit | Locking device |
US2266283A (en) * | 1939-12-21 | 1941-12-16 | Bendix Aviat Corp | Coupling |
US2516066A (en) * | 1942-04-27 | 1950-07-18 | Power Jets Res & Dev Ltd | Rotor assembly |
US2550580A (en) * | 1945-01-16 | 1951-04-24 | Power Jets Res & Dev Ltd | Flexible coupling for shafts and the like |
US2614799A (en) * | 1946-10-02 | 1952-10-21 | Rolls Royce | Multistage turbine disk construction for gas turbine engines |
US2650484A (en) * | 1947-05-29 | 1953-09-01 | Vickers Inc | Power transmission |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2901214A (en) * | 1954-04-12 | 1959-08-25 | Arthur J Slemmons | Turbine wheel and shaft assembly |
US2855230A (en) * | 1956-01-13 | 1958-10-07 | Cav Ltd | Screw locking device |
US3265291A (en) * | 1963-10-18 | 1966-08-09 | Rolls Royce | Axial flow compressors particularly for gas turbine engines |
DE2303382A1 (en) * | 1972-01-27 | 1973-08-02 | Snecma | TURBO JET ENGINE |
DE2364431A1 (en) * | 1972-12-26 | 1974-06-27 | Gen Electric | GAS TURBINE ENGINE WITH POWER TURBINE SYSTEM |
DE2630558A1 (en) * | 1975-07-09 | 1977-01-20 | Snecma | GAS TURBINE ENGINE |
US20070256412A1 (en) * | 2006-05-08 | 2007-11-08 | Honeywell International, Inc. | Compressor stage assembly lock |
US7918215B2 (en) * | 2006-05-08 | 2011-04-05 | Honeywell International Inc. | Compressor stage assembly lock |
FR2943098A1 (en) * | 2009-03-13 | 2010-09-17 | Snecma | Device for end-to-end fixation of bearing support and inter-turbine casing hub in open rotor/unducted fan type turbine engine of airplane, has single self-lockable fixing element screwed or unscrewed in unlocking position of locking units |
US20120308389A1 (en) * | 2010-12-08 | 2012-12-06 | Thomas Harbin | Locking nut assembly |
US8920129B2 (en) * | 2010-12-08 | 2014-12-30 | Alcoa, Inc. | Locking nut assembly |
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