JP6740466B2 - Fixtures that restrain the wheels of turbomachines - Google Patents

Description

The apparatus described herein relates generally to turbomachines, and more specifically to fasteners for restraining turbine wheels during blade removal or installation procedures.

Turbomachines require regular maintenance to accommodate cycle types and may be continuous (6,000 hours/year or more). It may be necessary to replace blades in the turbine section of a turbomachine during inspection and maintenance outages. Once the upper half of the turbine case is removed, the technician restrains the rotor from rotating and begins removing or replacing the turbine blades. To restrain the rotor, technicians have tied a strap around the blade and attached it somewhere in the turbine compartment. This known method can result in near misses or events involving rotation of the rotor due to damaged straps and damage caused to the blades. Known methods of using straps involve risk of injury, safety concerns, and the need for replacement parts due to hardware damage.

In one aspect of the invention, a fixture for restraining a wheel of a turbomachine is provided. The fixture includes a dovetail portion suitable for insertion into the dovetail slot of the wheel. The mounting portion is disposed adjacent to the dovetail portion or is integrally formed with the dovetail portion. The mounting portion includes at least one attachment point configured to secure the fixture to the stationary fixation point via the restraint.

In another aspect of the invention, a fastener for restraining a wheel of a turbomachine includes a dovetail portion adapted for insertion into the dovetail slot of the wheel. The dovetail portion has a dovetail-shaped profile or fir-tree-shaped profile adapted to mate with a corresponding notch or recess in the dovetail slot of the wheel. The dovetail portion has a rear end portion and a front end portion, and both the rear end portion and the front end portion have screw holes suitable for fixing the fastener. The mounting portion is disposed adjacent to the dovetail portion or is integrally formed with the dovetail portion. The mounting portion has at least one threaded hole suitable for attaching the connector to the mounting portion. Connecting fasteners and washers secure the connector to the mount via at least one threaded hole. The coupling is attached to the mounting part and the at least one coupling is suitable for being fixed to the stationary fixing point via a restraint.

In yet another aspect of the invention, a method for restraining a wheel of a turbomachine is provided. The method includes inserting the fastener into a dovetail slot of the wheel. The fixture has a dovetail portion suitable for insertion into the dovetail slot and a mounting portion disposed adjacent to the dovetail portion or integrally formed with the dovetail portion. The mounting part is suitable for connecting to at least one coupling. The inserting step may also include placing a washer on the fastener as well as inserting the fastener into a threaded hole in the dovetail portion, the washer being adapted to extend on an axial surface of the dovetail slot. Additionally, the inserting step may include attaching at least one connector to the mount. The attaching step attaches at least one countersunk assembly to the stationary structure, and the connecting step connects the restraint to the at least one coupler and at least one countersunk assembly. The connecting step also attaches a cam-along mechanism or ratchet mechanism with straps, chains or cables to both at least one connector and at least one counterbore assembly, and tightens the cam-along mechanism or ratchet mechanism to restrain the wheel. May be included. The stationary structure may be a turbomachine shell, flange or casing. The dovetail portion has a linear contour suitable for use with a straight dovetail slot, or a sloped contour suitable for use with a tilted dovetail slot, or a curved contour suitable for use with a curved dovetail slot. be able to.

It is a schematic diagram of a gas turbine system. Figure 3 shows a perspective view of a single turbine wheel. FIG. 6 shows a perspective view of a fixture for restraining a wheel of a turbomachine, according to one aspect of the invention. FIG. 6 shows a perspective view of a fixture for restraining a wheel of a turbomachine, according to one aspect of the invention. FIG. 6 shows an exploded perspective view of a fixture within a dovetail slot of a wheel, according to one aspect of the invention. FIG. 6A shows a top cross-sectional view of a fixture positioned within a dovetail slot. FIG. 6A shows a top cross-sectional view of a fixture disposed within a curved axially insertable dovetail slot. FIG. 6 shows a partial side view of a fixture mounted on a wheel and connected to a stationary fixation point on the casing of a turbomachine. FIG. 6 shows a perspective view of a fixture located within a dovetail slot of a turbomachine wheel. FIG. 10 shows a partial side view of the fixture of FIG. 9 mounted in the dovetail slot of the wheel, the fixture being connected to two stationary fixation points on the turbomachine casing. 3 is a flow chart of a method for restraining a wheel of a turbomachine. FIG. 6 shows a perspective view of a fixture according to one aspect of the invention. FIG. 6 shows a perspective view of a fixture with two connectors mounted on it.

In the following, one or more specific aspects/embodiments of the invention will be described. In an effort to provide a concise description of these aspects/embodiments, not all features of an actual implementation may be described in this specification. In the development of any such actual embodiment, as with any engineering or design project, the developer's specifics, such as compliance with machine-related, system-related, and business-related constraints that may vary from embodiment to embodiment. It should be understood that a number of decisions specific to each embodiment must be made to achieve these goals. Moreover, while such development efforts may be complex and time consuming, the routine work of designing, fabricating, and manufacturing will nevertheless bring the benefit of the present disclosure to those skilled in the art.

When referring to components of various embodiments of the invention, the articles "a, an" and "the" mean that there are one or more of the components. Intended.

The terms "comprising," "including," and "having" are inclusive, meaning that there may be additional elements other than the listed elements. It is a thing. Any example of operating parameters and/or environmental conditions does not exclude other parameters/conditions of the disclosed embodiments. Furthermore, references to “one embodiment”, “one aspect”, or “embodiment”, or “aspect” of the present invention exclude the presence of additional embodiments or aspects that also include the features described therein. It should be understood that it is not intended to be interpreted as a thing.

Referring to FIG. 1, a turbomachine, such as a gas turbine, is indicated generally by the reference numeral 10. The gas turbine 10 includes a compressor 12, a combustor assembly 14, a turbine 16, and a shaft 18. It should be appreciated that one embodiment of the gas turbine 10 may include multiple compressors 12, combustor assemblies 14, turbines 16 and/or shafts 18. The compressor 12 and the turbine 16 are connected by a shaft 18. Shaft 18 may be a single shaft or multiple shaft segments joined together to form shaft 18.

Combustor assembly 14 uses a combustible liquid and/or gas fuel, such as natural gas or hydrogen-rich syngas, to operate gas turbine 10. Combustor assembly 14 includes a combustor chamber 20 in fluid communication with a fuel premixer 22 in fluid communication with an air stream 24 and a fuel source 26. The fuel premixer 22 produces an air-fuel mixture and discharges the air-fuel mixture into the combustor chamber 20, thereby causing combustion to produce hot pressurized exhaust gas. The combustor chamber 20 directs the hot, pressurized gas through the transition piece into the turbine 16, causing rotation of the turbine 16. As turbine 16 rotates, shaft 18 rotates, thereby compressing the air as it flows into compressor 12. The turbine section 16 has a plurality of rotatable wheels 17 having a plurality of blades attached thereto. In this example, three stages of turbine wheels 17 are shown, each wheel paired with a stator vane stage (not shown). Generally, turbomachines include compressors, gas turbines and steam turbines.

FIG. 2 shows a perspective view of a single turbine wheel 17. Wheel 17 includes a series of circumferentially arranged dovetail slots 201. A turbine blade (not shown) is inserted into each of these dovetail slots 201. During maintenance (or assembly) of turbomachine 10, blades may need to be removed or installed. A maintenance example would simply remove the blade and either repair and re-install the used blade or replace it with a new blade. Turbomachines, such as gas turbines and steam turbines, have large and heavy components. The bladed wheel 17 is an example of a heavy component, which is balanced to reduce vibration. However, when the blade is removed from the wheel 17, the center of gravity of the wheel changes and the wheel attempts to rotate clockwise or counterclockwise. This can pose a significant safety hazard to those working on the turbine, as unexpected wheel rotation can push the blade (or other wheel components) against the operator. Therefore, it is desirable to constrain the rotor from rotating during the blade removal or installation procedure. The fixture 210 for restraining the wheel 17 is the focus of this disclosure and is described in further detail below.

FIG. 3 shows a perspective view of a fixture 210 for restraining the wheels 17 of the turbomachine 10. The fixture 210 includes a dovetail portion 320 adapted for insertion of the wheel 17 into the dovetail slot 201. The dovetail portion 320 has a dovetail-shaped profile or fir tree-shaped profile that includes a plurality of ridges and valleys adapted to mate with corresponding notches or recesses in the dovetail slot 201 of the wheel 17. Typically, the peak height of each ridge decreases in height as the peak approaches the bottom (radially inner portion) of the dovetail. The mounting portion 330 is adjacent to the dovetail portion, or is integrally formed with the dovetail portion 320. In one example, dovetail portion 320 and mounting portion 330 are cast as a single piece of material or machined from a single piece of material, which has good strength, toughness and mechanical properties. It can be 4140-HT (heat treated) high alloy tool steel. Alternatively, other suitable materials may be used as desired in a particular application. The fixture 210 also includes at least one connector 340 attached to the mount 330. Coupling 340 can be a coupling ring, hoist ring, shackle or other suitable coupling device. Fasteners 342, such as stepped screws with washers, can be used to attach the coupling ring 340 to the mount 330. The coupling 340 may be oriented such that the coupling pivots about an axial axis and the coupling may be oriented as shown in FIG. 3 or 4, or at any position between the positions shown. It may be mounted so that it can be oriented.

In use, the coupling 340 is secured to the stationary fixation point via a restraint. Stops 350, 360, 450 are used at their axial ends or faces to lock the fasteners within the dovetail slot 201. The fixture 210 has a front axial surface (or end) 370 and a rear axial surface (or end) 371. Stop 350 is configured as a T-shaped stop with the “T”-shaped top extending beyond the contour of dovetail slot 201. In this way, the stop 350 abuts the front axial surface of the wheel 17 and prevents axial movement of the fixture. Stop 350 is attached to dovetail portion 320 by fasteners 352, such as stepped screws or bolts. The posterior axial surface 371 has fasteners 362 and washers 360 that act as stops. Washer 360 is sized so that it overlaps the dovetail slot boundary, thereby preventing axial movement of the fixture. When both stops 350, 360 are installed, the dovetail portion 320 is locked within the dovetail slot 201 and the fixture does not slip out of the slot 201.

FIG. 4 shows a perspective view of a fixture 210 for restraining the wheels 17 of the turbomachine 10. Wheel 17 can have various thicknesses. Thicker wheels may require a stop 350 as shown in FIG. However, for thinner wheels, the stop 450 can be used. Stop 450 comprises a plate having holes for one or more fasteners 452. Fasteners 452 may be configured to thread into the axial surfaces of mounting portion 330 (as shown) and/or dovetail portion 320. By way of example only, the axial lengths of dovetail portion 320 and mounting portion 330 may be sized to match the thinnest wheel of the target turbomachine. In this way, the T-stop 350 can be used to accommodate the fixture on thicker wheels and the stop plate 450 can be used on the thinnest wheels. The various stops 350, 450, 360 may also be manufactured from 4140-HT (heat treated) high alloy tool steel, or any other suitable material. Additionally, both the rear and front ends have one or more internal threaded holes 481, 482 suitable for securing fasteners. The mounting portion 330 includes at least one female threaded hole 483 suitable for attaching the coupling 340 to the mounting portion 330 such that the fastener 342 and optional washers attach the coupling ring 340 to the mounting portion 330 via the threaded hole 483. Fix it. The mount 330 includes at least one attachment point configured to secure the fixture 210, the attachment point being a connector 340, a threaded hole 483, or any placement located on or in the mount. Other suitable devices/mechanisms may be possible.

FIG. 5 shows an exploded perspective view of the fixture 210 in the dovetail slot 201 of the wheel 17 of a turbomachine. The fixture 210 is inserted into the dovetail slot 201 and is restrained from moving in the radial or circumferential direction. However, the fixture may slip axially forward or backward. To prevent this, an axial stop is attached. The front axial stop 350 is attached/fixed to the front side of the fixture. Then, the rear axial stop 360 is installed on the rear side of the fixture. When both stops are installed, the lock is locked to the wheel. Next, the connector 340 may be attached to the mounting portion 330. One or more connecting rings may be used, for example one on each axial face/end of the fixture, or one or more connecting rings may be used at the top (or radius) of the mount 330. It is to be understood that any one of them can be arranged, or any combination thereof can be used. As shown in FIG. 5, the dovetail portion 320 has a linear contour suitable for use with the linear dovetail slot 201.

FIG. 6 shows a top cross-sectional view of the fixture positioned within the dovetail slot. The dovetail portion 620 has a beveled profile suitable for use with the beveled dovetail slot 601. The axially extending sides of the slot 601 are not orthogonal to its axial surface. FIG. 7 shows a top cross-sectional view of the fixture positioned within the dovetail slot. The dovetail portion 720 has a curved profile suitable for use with the curved dovetail slot 701. This curved axial insertion configuration can be used in a steam turbine, or any other turbomachine if desired.

FIG. 8 shows a partial side view of a fixture mounted on a wheel and connected to a stationary fixture point on the casing of a turbomachine. Stationary fixation point 800 may include at least one counterbore assembly 810 having a coupling ring 812 attached thereto. The counterbore assembly 800 is suitable for being secured to a stationary structure 820 such as a turbomachine casing, shell or flange. In the illustrated example, the stationary structure 820 is the lower half of the turbine case. Counterbore assembly 810 includes counterbore insert 814 having a portion suitable for extending into bore 822 of turbine case 820. The head of counterbore insert 814 is larger than the diameter of hole 822. The shaft portion of the counterbore insert (the portion that goes into the turbine casing bore 822) includes internal threaded holes that are configured for use with fasteners 813. Alternatively, the counterbore insert may be a cylindrical element with two opposing internal threaded holes, one for fasteners 813 and the other for bolts (eg, instead of 814). Fasteners 813 connect the coupling ring 812 to the counterbore insert 814 and thus to the turbine case 820. If desired, a washer 815 can be placed between the turbine case 820 and the connecting ring 812. The coupling 340 is secured to the coupling ring 812 on the stationary fixation point 800 by a restraint 830, which may be a chain, a chain with a cam along, a cable or a wire. Kamalong is also called ratchet puller, ratchet mechanism or cable (or chain) puller. A lever chain hoist or similarly functioning device can also be used for restraint 830.

FIG. 9 shows a perspective view of the fixture 210 in the dovetail slot 201 of the turbomachine wheel 17. The fixture 210 includes two connectors 340 and 940. The connecting ring 940 is attached to the front end of the mounting portion and is disposed on the front axial side of the wheel 17, and the coupling tool 340 is attached to the rear end of the mounting portion and is disposed on the rear axial side of the wheel 17. .. This type of configuration allows two restraints 830 to be attached to the fixture. The restraints may extend in the same direction or generally in opposite directions.

FIG. 10 shows a partial side view of the fixture 210 of FIG. 9 installed in the dovetail slot of the wheel 17, the fixture being connected to two stationary fixation points on the casing of the turbomachine. The first stationary fixation point 800 is connected to the fixture 210 via a restraint 830 (shown in dotted lines). The second stationary anchor point 800' is connected to the anchor 210 via a restraint 830' (shown in dotted lines). The two stationary fixation points 800, 800' can be on either side of the turbine case. The restraints 830, 830' may be tightened by using a cam along 1010 or 1010'. However, it is not necessary to overtighten the restraint 830, as the mere slacking is sufficient to prevent or suppress unwanted wheel rotation. It should also be appreciated that one or more connecting rings may be attached to the top of mounting 330.

FIG. 11 is a flowchart of a method 1100 of restraining wheels 17 of a turbomachine. At step 1110, the fixture 210 is inserted into the dovetail slot 201 of the wheel 17. The fixture 210 includes a dovetail portion 320 suitable for insertion into the dovetail slot 201 and a mounting portion 330 disposed adjacent to the dovetail portion or integrally formed with the dovetail portion 320. The mounting portion 330 is suitable for connecting to at least one connector 340. Step 1110 can also include placing the washer 360 over the fastener 362 and then inserting the fastener 362 into the threaded hole in the dovetail portion 320. The washer is adapted to extend over or overlap the axial surface of the dovetail slot 201. Further, generally at least one connector 340 may be attached to the mount 330 or the fixture 210.

At step 1120, at least one counterbore assembly 810 is attached to the stationary structure 820. At step 1130, the restraint 830 is connected to the connector 340 and at least one counterbore assembly 810. Steps 1120 and 1130 can be repeated until the desired number of restraints are attached. The connecting step 1130 also includes attaching a cam along 1010 having straps, chains 830 or cables to both the connector 340 and the counterbore assembly 810 or other connecting ring 812 located on the stationary support. You can At step 1140, the restraint is tightened to prevent or prevent the wheel 17 from rotating.

FIG. 12 shows a perspective view of the fixture 1200. The fixture 1200 includes a dovetail portion 1210 suitable for insertion of the wheel 17 into the dovetail slot 201. The dovetail portion 1210 has a dovetail-shaped profile or fir-tree-shaped profile that includes a plurality of ridges and valleys adapted to mate with corresponding notches or recesses in the dovetail slot 201 of the wheel 17. Typically, the peak height of each ridge decreases in height as the peak approaches the bottom (radially inner portion) of the dovetail. The mounting portion 1220 is adjacent to the dovetail portion 1210, or is integrally formed with the dovetail portion 1210. In one example, dovetail portion 1210 and mounting portion 1220 are cast or machined from a single piece of material, which has good strength, toughness, and mechanical properties. It can be 4140-HT (heat treated) high alloy tool steel. Alternatively, other suitable materials may be used as desired in a particular application. The fixture 1200 also includes at least one connector 1230 attached to the mounting portion 1220. Coupling 1230 may be a coupling ring, hoist ring, shackle or other suitable coupling device. Coupling 1230 is attached to the top of the mount (as shown). In this example, threaded fasteners (not shown) attached to connector 1230 are screwed into female threaded holes (not shown) in top 1221 of mounting portion 1220. If desired, a washer can be placed between the bottom of the connector 1230 and the top 1221 of the mount. The coupler 1230 may also be mounted so that it pivots (relative to the turbomachine) about a radial axis.

The back plate 1240 is attached to the first axial end of the mounting portion and is suitable for extending over the axial surface of the dovetail slot to restrain axial movement of the fixture. The back plate 1240 can be a substantially rectangular planar member, as shown. A plurality of fasteners 1242 (three shown) can be used to attach the backplate 1240 to the mount 1220. The first axial end of the mounting portion includes a plurality of internally threaded holes configured for use with fasteners 1242. Fasteners 1242 can be screws, bolts, or any other suitable fastening device.

The slide block 1250 may be attached to the top of the mounting portion 1220 near the opposing (or second) axial end of the mounting portion. The slide block 1250 extends over the axial surface of the dovetail slot 201 and is suitable for restraining the axial movement of the fixture 1200. Further, the slide block 1250 slides up and down along the radial axis with respect to the turbomachine so that the fixture 1200 can be inserted into the dovetail slot 201 when the slide block is in the upper position. Suitable for As shown, when slide block 1250 is in the down position, fixture 1200 is constrained from axial movement. Two pins 1252 are attached to the mounting portion and function as guides for moving the slide block in the radial direction (or the vertical direction). The pin 1252 can be screwed into the mounting part through the corresponding screw hole. A locking screw 1254, such as a stepped screw, is used to lock the slide block in place and prevent its radial movement. The locking screw 1254 also locks the slide block in place to prevent axial movement of the fixture. In use, the connector 1230 is secured to the stationary fixation point via a restraint. When both the back plate 1240 and the slide block 1250 are installed and locked in place, the dovetail portion 1210 is locked in the dovetail slot 201 and the fixture 1200 does not slip off the slot 201.

FIG. 13 shows a perspective view of the fixture 1300. The fixture 1300 includes two connectors 1331 and 1332. Both connectors 1331 and 1332 are attached to the top of the mount 1220. This type of configuration allows two restraints 830 to be attached to the fixture. The restraints may extend in the same direction or generally in opposite directions.

This specification discloses the present invention, including the best mode, and is intended to enable those skilled in the art to practice the invention, including making and using any device or system and performing any related method. I'm using an example. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other embodiments may include structural elements that do not differ from the wording of the claims or that include structural elements that are insubstantial to the wording of the claims. Is intended to be within.
[Embodiment 1]
A fixture (210, 1200, 1300) for restraining a wheel (17) of a turbomachine (10), the fixture (210, 1200, 1300) comprising:
A dovetail portion (320, 620, 720, 1210) suitable for insertion into the dovetail slot (201) of the wheel (17),
A mounting portion (330, 1220) disposed adjacent to the dovetail portion (320, 620, 720, 1210) or integrally formed with the dovetail portion (320, 620, 720, 1210); Including,
At least the mounting portion (330, 1220) is configured to secure the fixture (210, 1200, 1300) to the stationary fixation point (800, 800′) via a restraint (830, 830′). Fixture (210, 1200, 1300) including one attachment point.
[Embodiment 2]
The stationary fixation point (800, 800') further includes at least one countersunk assembly (810) having an attached coupling (340, 1230, 1331), the at least one countersunk assembly (810). A fixture (210, 1200, 1300) according to embodiment 1 suitable for being fixed to a stationary structure (820).
[Embodiment 3]
The stationary structure (820) is
The fixture (210, 1200, 1300) according to embodiment 2, which is at least one of a shell, a flange, or a casing of the turbomachine (10).
[Embodiment 4]
The dovetail portion (320, 620, 720, 1210) has a dovetail-shaped or fir-tree shaped contour adapted to mate with a corresponding notch or recess in the dovetail slot (201) of the wheel (17). The fixture (210, 1200, 1300) according to embodiment 1, having.
[Embodiment 5]
The fasteners (210, 1200, 1300) further include a rear end and a front end, at least one of the rear end and the front end suitable for threaded fastener (481, 482, 483). ) The fixture (210, 1200, 1300) according to embodiment 4, having
[Embodiment 6]
The fasteners, washers (360, 815) fixed by the screw holes (481, 482, 483), and fasteners (350, 360) located at opposite ends of the fasteners (210, 1200, 1300). , 450), the washer (360, 815) and the stop (350, 360, 450) locking the dovetail portion (320, 620, 720, 1210) in the dovetail slot (201). A fixture (210, 1200, 1300) according to embodiment 5, suitable for.
[Embodiment 7]
At least one of the rear end portion or the front end portion,
The fixture (210, 1200, 1300) according to embodiment 5, having a T-shaped stop (350) or a rectangular stop.
[Embodiment 8]
The dovetail parts (320, 620, 720, 1210) are
Suitable for use with a straight dovetail slot (201), a straight contour, or for use with a slanted dovetail slot (601), a slanted contour, or for use with a curved dovetail slot (701) The fixture (210, 1200, 1300) according to embodiment 1, having one of the curved contours.
[Embodiment 9]
The mounting portion (330, 1220) further comprises at least one screw hole (481, 482, 483) suitable for mounting the coupling member (340, 1230, 1331) to the mounting portion (330, 1220). , The fastener of claim 1, wherein the fastener secures the connector (340, 1230, 1331) to the mount (330, 1220) via the at least one screw hole (481, 482, 483). Ingredients (210, 1200, 1300).
[Embodiment 10]
A first connector (340, 1230, 1331) attached to the rear end of the mounting portion (330, 1220);
The second connector (340, 1230, 1331) attached to the front end of the mounting portion (330, 1220), and the fixture (210, 1200, 1300) according to the first embodiment.
[Embodiment 11]
Couplings (340, 1230, 1331) attached to the top (1221) of the mounting portion (330, 1220).
The fixture (210, 1200, 1300) according to embodiment 1, further comprising:
[Embodiment 12]
A method (1100) for restraining a wheel (17) of a turbomachine (10), the method (1100) comprising:
Inserting a fixture (210, 1200, 1300) into a dovetail slot (201) in the wheel (17), the fixture (210, 1200, 1300) comprising:
A dovetail portion (320, 620, 720, 1210) suitable for being inserted into the dovetail slot (201),
A mounting portion (330, 1220) disposed adjacent to the dovetail portion (320, 620, 720, 1210) or integrally formed with the dovetail portion (320, 620, 720, 1210). The mounting portion (330, 1220) is suitable for connecting to at least one coupling (340, 1230, 1331), and the mounting portion (330, 1220) is inserted,
Attaching at least one counterbore assembly (810) to the stationary structure (820);
Connecting a restraint (830, 830') to the at least one connector (340, 1230, 1331) and the at least one counterbore assembly (810).
[Embodiment 13]
The stationary structure (820) is
The method (1100) of embodiment 12, comprising at least one of a shell, a flange, or a casing of the turbomachine (10).
[Embodiment 14]
The steps of inserting the fixtures (210, 1200, 1300) include
Placing a washer (360, 815) or a stop (350, 360, 450) on the fastener;
Inserting the fastener into a screw hole (481, 482, 483) of the dovetail portion (320, 620, 720, 1210), the washer (360, 815) or the stop (350, 360, 450). ) Is suitable for extending on the axial surface of the dovetail slot (201), inserting;
Attaching the at least one connector (340, 1230, 1331) to the mount (330, 1220).
[Embodiment 15]
The connecting step is
Attaching a cam-along (1010, 1010') having straps, chains or cables to both the at least one connector (340, 1230, 1331) and the at least one counterbore assembly (810); 1010, 1010′) to constrain the wheel (17). 13. The method (1100) of embodiment 12, further comprising:

10 turbomachine, gas turbine 12 compressor 14 combustor assembly 16 turbine part, turbine 17 turbine wheel 18 shaft 20 combustor chamber 22 fuel premixer 24 airflow 26 fuel source 201 dovetail slot 210 fixture 320 dovetail part 330 installation 340 Connection ring, connection 342 Fastener 350 T-shaped stop, front axial stop 352 Fastener 360 washer, rear axial stop 362 Fastener 371 Rear axial face 450 Stop, stop plate 452 Fastener 481 Female threaded hole 482 Female screw hole 483 Female screw hole 601 Inclined dovetail slot 620 Dovetail part 701 Curved dovetail slot 720 Dovetail part 800 First stationary fixing point 800' Second stationary fixing point 810 Countersunk assembly 812 Connecting ring 813 Fastener 814 Countersink 815 Washer 820 stationary structure, turbine case 822 turbine casing hole 830 chain, restraint 830' restraint 940 coupling ring 1010 cam along 1010' cam along 1100 method 1200 fixture 1210 dovetail 1222 mounting 1221 top 1230 coupling 1240 back plate 1242 fastener 1250. Slide block 1252 Pin 1254 Fixing screw 1300 Fixing tool 1331 Connecting tool

Claims (8)

A fixture (210, 1200, 1300) for restraining a wheel (17) of a turbomachine (10), the fixture (210, 1200, 1300) comprising:
A dovetail portion (320, 620, 720, 1210) suitable for insertion into the dovetail slot (201) of the wheel (17),
A mounting portion (330, 1220) disposed adjacent to the dovetail portion (320, 620, 720, 1210) or integrally formed with the dovetail portion (320, 620, 720, 1210);
A first connecting ring (340, 812, 940) attached to a rear end of the mounting portion (330, 1220);
A second connecting ring (340, 812, 940) attached to the front end of the mounting portion (330, 1220) ,
A fixture, wherein the first and second connecting rings (340, 812, 940) are suitable for being fixed to a stationary fixing point (800, 800') via a restraint (830, 830'). (210, 1200, 1300). The dovetail portion (320, 620, 720, 1210) has a dovetail-shaped or fir-tree shaped contour adapted to mate with a corresponding notch or recess in the dovetail slot (201) of the wheel (17). The fixture (210, 1200, 1300) of claim 1, having. The fasteners (210, 1200, 1300) further include a rear end and a front end, both the rear end and the front end suitable for threaded fasteners (481, 482, 483). The fixture (210, 1200, 1300) according to claim 2 , having a. A fixture (210, 1200, 1300) for restraining a wheel (17) of a turbomachine (10), the fixture (210, 1200, 1300) comprising:
A dovetail portion (320, 620, 720, 1210) suitable for insertion into the dovetail slot (201) of the wheel (17),
A mounting portion (330, 1220) disposed adjacent to the dovetail portion (320, 620, 720, 1210) or integrally formed with the dovetail portion (320, 620, 720, 1210);
At least one connecting ring (340, 812, 940) attached to the mounting part (330, 1220);
Including
Said at least one connecting ring (340, 812, 940) is suitable for being fixed to a stationary fixing point (800, 800′) via a restraint (830, 830′),
The dovetail portion (320, 620, 720, 1210) has a dovetail-shaped or fir tree-shaped contour adapted to mate with a corresponding notch or recess in the dovetail slot (201) of the wheel (17). Yes, and
The fasteners (210, 1200, 1300) further include a rear end and a front end, both the rear end and the front end suitable for threaded fasteners (481, 482, 483). have a,
The fasteners, washers (360, 815) fixed by the screw holes (481, 482, 483), and fasteners (350, 360) located at opposite ends of the fasteners (210, 1200, 1300). , 450), the washer (360, 815) and the stop (350, 360, 450) locking the dovetail portion (320, 620, 720, 1210) in the dovetail slot (201). suitable fixture (210,1200,1300). The dovetails (320, 620, 720, 1210) are
Suitable for use with a straight dovetail slot (201), a straight contour, or for use with a slanted dovetail slot (601), a slanted contour, or for use with a curved dovetail slot (701) The fixture (210, 1200, 1300) of claim 1, having one of curved contours. The mounting part (330, 1220) further comprises at least one screw hole (481, 482, 483) suitable for mounting the connecting ring (340, 1230, 1331) to the mounting part (330, 1220). , The fastener of claim 1, wherein the fastener secures the coupling ring (340, 1230, 1331) to the mount (330, 1220) via the at least one screw hole (481, 482, 483). Ingredients (210, 1200, 1300). A fixture (210, 1200, 1300) for restraining a wheel (17) of a turbomachine (10), the fixture (210, 1200, 1300) comprising:
A dovetail portion (320, 620, 720, 1210) suitable for being inserted into a dovetail slot (201) of the wheel (17), the dovetail portion (320, 620, 720, 1210) being the wheel ( 17) having a dovetail profile or fir tree profile adapted to mate with a corresponding notch or recess in said dovetail slot (201), said dovetail part (320, 620, 720, 1210) A dovetail portion (320, 620, having a rear end and a front end, both the rear end and the front end having screw holes (481, 482, 483) suitable for securing fasteners. 720, 1210),
A mounting part (330, 1220) disposed adjacent to the dovetail part (320, 620, 720, 1210) or integrally formed with the dovetail part (320, 620, 720, 1210). And the mounting part (330, 1220) has at least one screw hole (481, 482, 483) suitable for mounting the connecting ring (340, 812, 940) to the mounting part (330, 1220). A mounting part (330, 1220) in which a connecting fastener fixes the connecting ring (340, 812, 940) to the mounting part (330, 1220) via the at least one screw hole (481, 482, 483). )When,
A first connecting ring (340, 812, 940) mounted on the rear axial surface of the mounting portion (330, 1220);
A second connecting ring (340, 812, 940) attached to the front axial surface of the mounting portion (330, 1220) ,
A fixture, wherein the first and second connecting rings (340, 812, 940) are suitable for being fixed to a stationary fixing point (800, 800') via a restraint (830, 830'). (210, 1200, 1300). The dovetails (320, 620, 720, 1210) are
Suitable for use with a straight dovetail slot (201), a straight contour, or for use with a slanted dovetail slot (601), a slanted contour, or for use with a curved dovetail slot (701) The fixture (210, 1200, 1300) according to claim 7 , having one of curved contours.