JP2020197158A - Rotor assembly method, rotor disc holding jig, and rotor stand - Google Patents

Abstract

To enable a rotor to be assembled suitably.SOLUTION: A rotor assembly method comprises an installation steps of installing a rotor end on a rotor stand with an axial direction directed along a vertical direction, a mounting step of holding the outer periphery of a disc with a rotor disc holding jig, a lamination step of mounting a moving mechanism to the rotor disc holding jig for holding the disc, moving it and then laminating it on the rotor end; and a connection step of removing the moving mechanism from the rotor disk holding jig, and connecting the rotor disk holding jig and a support column arranged around the rotor by a connection jig.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rotor assembly method for assembling a rotor divided into a plurality of members in the axial direction, a rotor disk holding jig and a rotor stand using the same.

Some rotating machines such as gas turbines, steam turbines, and compressors have a rotor, which is a rotating shaft, divided into a plurality of rotors in the axial direction. Such a rotor is held in a state where the axial direction of the rotor faces the vertical direction, and the rotor is assembled by stacking the rotor discs from the upper side in the vertical direction. For example, Patent Document 1 describes a method of lifting, transporting, and stacking a plurality of rotor disks. Further, in Patent Document 2, the lower end in the vertical direction of the rotor is supported by the rotor stand, and the axial direction of the rotor is changed between the vertical direction and the horizontal direction with the rotor stand as an axis. Is described.

JP-A-63-143303 Japanese Unexamined Patent Publication No. 2014-532135

As described in Patent Document 1, the rotors are arranged in a direction in which the axial direction is the vertical direction, and members that are divided in the axial direction are stacked and stacked. Therefore, when the parts are assembled, the work space moves upward in the vertical direction. Therefore, as the number of work processes increases, the work time increases.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a rotor assembly method, a rotor disk holding jig, and a rotor stand capable of more preferably assembling a rotor.

The present invention for achieving the above object is a rotor assembly method, in which a disk is provided by an installation step of installing the rotor end on a rotor stand with the rotor end oriented in the vertical direction and a rotor disk holding jig. A mounting step for holding the outer periphery of the rotor, a stacking step for mounting and moving the moving mechanism on the rotor disk holding jig for holding the disk, and laminating on the rotor end portion, and the rotor disk holding jig for the moving mechanism. It includes a connecting step of removing from the tool and connecting the rotor disk holding jig and the columns arranged around the rotor end portion with the connecting jig.

Further, in the connecting step, it is preferable to connect the rotor disk holding jig and the connecting jig at a position different from the position where the moving mechanism is mounted.

Further, it is preferable that the rotor disk holding jig is fitted on the outer circumference of the disk.

Further, in the installation step, the rotor end is placed in the lower half of the rotor stand in a direction in which the axial direction is horizontal, and the rotor end is sandwiched between the upper half with the radial holding position as a fixed position. After installing a vertical support mechanism between the horizontal end of the upper half and the lower half and the rotor end, the upper half and the lower half are rotated to rotate the rotor end vertically in the axial direction. It is preferable to install it in the direction of the direction.

Further, it is preferable that the rotor stand is provided with a rotation mechanism in the lower half thereof.

The present invention for achieving the above object is a rotor disc holding jig for holding the disc, and lifts the disc and a ring having a fitting portion on the inner peripheral surface for fitting with the outer periphery of the disc. It includes a hanging piece that connects to the moving mechanism, and a holding piece to which a connecting jig that connects to a support column arranged in the vicinity of the assembled disc is attached.

Further, it is preferable that the holding piece is arranged at a position different from that of the hanging piece in the circumferential direction of the ring.

Further, the holding piece is preferably the hanging piece.

The present invention for achieving the above object is a rotor stand that supports an end portion of the rotor, includes a base, an upper half, and a lower half that connects the upper half and the upper half, and surrounds the outer periphery of the rotor. A carrier that is open in the axial direction of the rotor, a rotation mechanism that is connected to the lower half and rotates the lower half with respect to the base in a direction orthogonal to the axial direction of the rotor, and a rotation mechanism of the rotor. A rotor fixing mechanism that is arranged on the carrier in a state of being movable in the radial direction and is in contact with the outer periphery of the rotor to fix the radial position of the rotor, and an axial direction of the rotor are arranged in the vertical direction. In this case, the rotor is provided with a vertical lower surface and a vertical support mechanism in contact with the vertical upper surface of the carrier.

Further, the rotor fixing mechanism includes a bolt that is screwed into the carrier and rotates to move in the axial direction of the rotor, and a bearing pad that is arranged on the surface of the bolt on the rotor side and is in contact with the rotor. It is preferable that the bearing pad has a shape along the bearing surface of the rotor.

Further, it is preferable that the bearing pad has a larger area of the surface facing the rotor than the diameter of the bolt.

According to the present invention, workability can be improved and work steps can be reduced. As a result, the rotor can be assembled efficiently.

FIG. 1 is a perspective view showing a schematic configuration of the assembled rotor of the present embodiment. FIG. 2 is a schematic view showing a schematic configuration of a rotor stand. FIG. 3 is a schematic view showing a state in which the axial direction of the carrier of the rotor stand is oriented in the horizontal direction. FIG. 4 is an explanatory diagram for explaining the rotational operation of the rotor stand. FIG. 5 is a schematic view showing a state in which another rotor is held by the rotor stand. FIG. 6 is a schematic view showing a schematic configuration of a rotor disk holding jig. FIG. 7 is a view taken along the line AA of FIG. FIG. 8 is a view taken along the line BB of FIG. FIG. 9 is a view taken along the line CC of FIG. FIG. 10 is an explanatory diagram for explaining a rotor assembly method. FIG. 11 is an explanatory diagram for explaining a rotor assembly method. FIG. 12 is an explanatory diagram for explaining a rotor assembly method. FIG. 13 is an explanatory diagram for explaining a rotor assembly method. FIG. 14 is an explanatory diagram for explaining a rotor assembly method. FIG. 15 is an explanatory diagram for explaining a rotor assembly method.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes a combination of the respective embodiments.

First, the assembly of the rotor of the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view showing a schematic configuration of the assembled rotor of the present embodiment. The rotor 10 shown in FIG. 1 has a rotor end portion 22 and a plurality of disc units 24. The rotor 10 shown in FIG. 1 is a rotor of a gas turbine, and includes a portion for mounting a rotor blade of a compressor and a portion for mounting a rotor blade of the turbine. The rotor 10 is arranged so that the axial direction is the vertical direction. The rotor end 22 is a member that serves as an axial end of the rotor 10. The rotor end 22 includes a portion supported by a bearing or the like of a rotating machine. Further, the rotor end portion 22 also includes a portion to which the moving blade is mounted. The rotor end 22 is arranged at the lower end in the vertical direction. The disc unit 24 has a structure in which a plurality of discs (rotor discs) 26 are connected. A moving blade is mounted on the outer periphery of the disc 26. The number of disk units 24 and the number of stages of disks 26 included in one disk unit 24 are not particularly limited.

The rotor 10 shown in FIG. 1 is assembled using a rotor stand 12, a rotor disk holding jig 14, a support column 16, and a connecting jig 18. Further, the rotor 10 is assembled by using a hanging tool (moving mechanism) that lifts and moves each part.

The rotor stand 12 supports the rotor end 22 at the lower end in the vertical direction of the rotor 10 arranged along the vertical direction. The portion of the rotor stand 12 that supports the rotor 10 rotates about a direction orthogonal to the axial direction of the rotor 10. As a result, the rotor end portion 22 can be rotated from a state in which the rotor end portion 22 is arranged horizontally in the axial direction to a state in which the rotor end portion 22 is arranged vertically.

The rotor stand 12 will be described with reference to FIGS. 2 to 5. FIG. 2 is a schematic view showing a schematic configuration of a rotor stand. FIG. 3 is a schematic view showing a state in which the axial direction of the carrier of the rotor stand is oriented in the horizontal direction. FIG. 4 is an explanatory diagram for explaining the rotational operation of the rotor stand. FIG. 5 is a schematic view showing a state in which another rotor is held by the rotor stand. The rotor stand 12 includes a base 30, a carrier 32, a rotation mechanism 34, a rotor fixing mechanism 36, and a vertical support mechanism 38.

The base 30 supports the load of each part of the rotor stand 12. The base portion 30 is fixed on a surface plate, and is fixed in a predetermined direction with respect to the horizontal direction and the vertical direction. The base 30 supports the carrier 32 via a rotation mechanism 34.

The carrier 32 has a through hole, and the through hole is a structure that covers the periphery of the outer circumference (diameter outer surface) of the rotor end portion 22. The carrier 32 is a separable structure, and the lower half thereof. 50, the upper half 52, and the fastening mechanism 56 are included. The lower half 50 of the carrier 32 is connected to the rotation mechanism 34, and one surface of the outer circumference of the rotor end 22 is open. The upper half 52 closes the open surface of the surfaces facing the outer circumference of the rotor end 22 of the lower half 50. The fastening mechanism 56 is a bolt and fixes the upper half 52 to the lower half 50. The carrier 32 can attach and detach the upper half 52 to and from the lower half 50 by the fastening mechanism 56.

The rotation mechanism 34 has a bearing 40 and a trunnion 42. The bearing 40 is fixed to the base 30. The trunnion 42 is fixed to the lower half 50 of the carrier 32. The trunnion 42 is provided on two opposing surfaces of the outer peripheral surface of the lower half 50, and the trunnion 42 is a cylinder whose axial direction is the horizontal direction and is fixed to the side surface of the lower half 50. The two trunnions are arranged at positions where the extension lines of the cylinder axes overlap. The bearing 40 supports the trunnion 42 in a rotatable state. The rotation mechanism 34 supports the trunnion 42 in a rotatable state, so that the carrier 32 is rotated about the axial direction of the trunnion 42 as a rotation center.

As shown in FIG. 4, the rotor stand 12 has a rotating mechanism 34 that allows the carrier 32 to rotate so that the lower half 50 and the upper half 52 are arranged in the horizontal direction, and the upper half 52 is in the vertical direction. By rotating in the upward direction, the upper half 52b moves to a position where the upper half 52b is arranged directly above the lower half 50b in the vertical direction. By locating the rotor stand 12 at the lower half 50 and the upper half 52 of FIG. 4, the open surfaces of the carrier 32 become the upper and lower surfaces in the vertical direction, and the rotor 10 is oriented along the vertical direction. Can be placed. Further, the carrier 32 is located at the upper half 52b and the lower half 50b, and the upper half 52b can be removed from the lower half 50b to open the upper surface of the lower half 50b in the vertical direction.

Next, the rotor fixing mechanism 36 fixes the position of the rotor 10 with respect to the carrier 32, specifically, the position in the radial direction. The rotor fixing mechanism 36 includes a plurality of units including a position adjusting mechanism 60 and a bearing pad 62. In the rotor fixing mechanism 36 of the present embodiment, units including the position adjusting mechanism 60 and the bearing pad 62 are provided at three locations on the carrier 32 in the circumferential direction of the rotor 10. One unit is provided in the upper half 52 and two units are provided in the lower half 50. The position adjusting mechanism 60 adjusts the radial position of the rotor 10 with respect to the carrier 32. The position adjusting mechanism 60 is, for example, a bolt screwed into a thread groove formed in the carrier 32. The bearing pad 62 is arranged at the end of the position adjusting mechanism 60 on the side facing the rotor 10. The bearing pad 62 moves in the radial direction of the rotor 10 integrally with the position adjusting mechanism 60. The bearing pad 62 has a surface where the radially inner end of the rotor 10 comes into contact with the rotor 10. The bearing pad 62 preferably has a larger area of the radially inner end of the rotor 10 in the cross section of the position adjusting mechanism 60 in the moving direction than the position adjusting mechanism 60. As a result, the bearing pad 62 and the rotor end 22 can be suitably brought into contact with each other. It is preferable that the surface of the bearing pad 62 facing the rotor 10 has a curved surface shape along the diameter of the rotor 10. In the rotor fixing mechanism 36, the position adjusting mechanism 60 extends from the position where the central axis of the rotor 10 is arranged, moves along the radial line, and moves the bearing pad 62 along the radial direction. The rotor fixing mechanism 36 can support the rotor 10 at three points in the circumferential direction by arranging units including the position adjusting mechanism 60 and the bearing pad 62 at three places in the circumferential direction of the rotor 10. The ten axes can be arranged at a position where they overlap the desired axis.

As shown in FIG. 2, the vertical support mechanism 38 includes the end surface (opening side surface) of the through hole of the carrier 32 and the rotor end portion in a state where the axis of the rotor 10 is arranged in the vertical direction. It is arranged between the 22 and the surface facing downward in the radial direction. The vertical support mechanism 38 is a rigid body. The vertical support mechanisms 38 are arranged at a plurality of locations in the circumferential direction of the rotor 10. The vertical support mechanism 38 sets the position of the rotor 10 in the vertical direction with respect to the carrier 32 as a predetermined position. The vertical support mechanism 38 is arranged below the surface of the rotor end 22 facing downward in the radial direction, so that the vertical support mechanism 38 is arranged on the lower surface of the rotor end 22 in the vertical direction and the upper surface of the carrier 32 in the vertical direction. The space can be filled and the load of the rotor 10 is transmitted to the carrier 32.

Further, the rotor stand 12 is provided with a rotor fixing mechanism 36 that can adjust the distance in the radial direction and a vertical support mechanism 38 that can adjust the distance in the vertical direction when the rotor 10 is supported in the vertical direction. Further, it is possible to support rotors having various structures having different positions where the diameter changes in the axial direction. Specifically, as shown in FIGS. 2 and 5, by adjusting the radial position of the bearing pad 62 of the rotor fixing mechanism 36, the bearing pad 62 is moved to the rotor end according to the diameter of the rotor end 22. It can be brought into contact with the portion 22. Further, by adjusting the positions of the vertical support mechanisms 38 and 38a in the radial direction and the length in the axial direction to the rotor 10 and adjusting the structure to be arranged, it is a rigid body and the lower surface of the rotor end 22 in the vertical direction. It is possible to fill the space between the carrier 32 and the upper surface of the carrier 32 in the vertical direction.

Next, as shown in FIG. 1, the rotor disc holding jig 14 is mounted on the outer periphery of the disc unit 24. In the state shown in FIG. 1, the rotor disk holding jig 14 is connected to the support column via the connecting jig 18. The rotor disk holding jig 14 also serves as a jig for connecting the moving mechanism when the rotor disk 24 is conveyed.

The rotor disk holding jig 14 will be described with reference to FIGS. 6 to 9. FIG. 6 is a schematic view showing a schematic configuration of a rotor disk holding jig. FIG. 7 is a view taken along the line AA of FIG. FIG. 8 is a view taken along the line BB of FIG. FIG. 9 is a view taken along the line CC of FIG. The rotor disk holding jig 14 has a ring 101, a hanging piece 112, and a holding piece 114.

The ring 101 has split rings 102, 104 and a fastening mechanism 106. The dividing rings 102 and 104 are arc-shaped members for half a circumference of the ring 101. The dividing rings 102 and 104 have flanges 111 at their circumferential ends. The flange 111 has a plate portion 120 protruding radially outward and upward from the arcs of the dividing rings 102 and 104. The plate portion 120 is in contact with the plate portion 120 facing the plate portion 120. A hole 122 is formed in the plate portion 120. The fastening mechanism 106 has a bolt 106a and a nut 106b. The fastening mechanism 106 connects the two split rings 102 and 104 into a ring shape by inserting the bolt 106a into the hole 122 and fastening the bolt 106a with the nut 106b.

The ring 101 has a fitting portion 110 formed on the inner peripheral surface thereof. The fitting portion 110 is formed on the inner surface in the radial direction and has a groove 119 recessed outward in the radial direction. A portion of the fitting portion 110 that is radially outer of the disc 26 is inserted into the groove 119. The diameter of the radial inner end of the groove 119 is smaller than the diameter of the radial outer end of the disc 26, and the diameter of the radial outer end is the diameter of the radial outer end of the disc 26. Greater than. The ring 101 can hold the disc 26 in the ring 101 by inserting the disc 26 into the fitting portion 110. The ring 101 only needs to be able to hold the disc 26, and the fitting portion 110 is not limited to the groove 119.

The suspension piece 112 is connected with a moving mechanism when the disc unit 24 is moved. The suspension pieces 112 are arranged at four locations in the circumferential direction. In this embodiment, two hanging pieces 112 are arranged so as to sandwich one flange 111, and the remaining two hanging pieces 112 are arranged so as to sandwich the other flange 111. The suspension piece 112 has a plate portion 132 that protrudes radially outward and upward from the arcs of the dividing rings 102 and 104. A hole 134 is formed in the plate portion 132. A member of the moving mechanism is connected to the hole 134.

The holding piece 114 is connected to the support column 16 via the connecting jig 18 after the disc unit 24 is laminated on the rotor 10. The holding pieces 114 are arranged at two locations in the circumferential direction. The holding piece 114 is provided at a position corresponding to the surface on which the support column 16 is arranged, and in the present embodiment, is arranged between the two hanging pieces 112 of the dividing ring 104. The holding piece 114 has a plate portion 140 that protrudes radially outward from the arc of the dividing rings 102 and 104. A hole 142 is formed in the plate portion 140. The connecting jig 18 is connected to the hole 142. Further, the plate portion 140 has a plate-shaped reinforcing portion 144 extending in the circumferential direction on the outer surface in the circumferential direction.

The rotor disk holding jig 14 is provided with a ring 101, a hanging piece 112, and a holding piece 114, so that it can be used as a jig for transporting the disk unit 24 and for maintaining the rotor 10 with respect to the support column 16. It becomes a jig of. Further, the rotor disk holding jig 14 can be attached to and detached from the disk 26 by making the ring 101 detachable from each other by the fastening mechanism 106.

The stanchions 16 are arranged around the rotor 10 and extend vertically to the rotor 10. The columns 16 are arranged at positions that do not overlap the range in which the rotor 10 rotates on the rotor stand 12, for example, in a direction that intersects the rotation axis. The support column 16 serves as a scaffold for a worker who assembles the rotor 10. Further, the support column 16 serves as a support mechanism for maintaining a state in which the rotor 10 is arranged along the vertical direction. The connecting jig 18 connects the rotor disk holding jig 14 and the support column 16. The connecting jig 18 is a mechanism that can be attached to and detached from the rotor disk holding jig 14 and the support column 16, respectively. An example of the structure of the connecting jig 18 will be described together with an assembly method.

Next, a method of assembling the rotor will be described with reference to FIGS. 10 to 15. 10 to 15 are explanatory views for explaining the rotor assembly method, respectively. 10 to 13 and 15 show the order of the assembly procedure.

As shown in FIG. 10, a receiving allowance 202 on which a part of the rotor end 22 can be placed is arranged in the vicinity of the rotor stand 12. In such an arrangement, the carrier 32 of the rotor stand 12 has the upper half 52 removed from the lower half 50 and the connecting surface with the upper half 52 of the lower half 50 facing upward in the vertical direction. Be placed. Further, the rotor end portion 22 is held by the moving mechanism 204 via the connecting mechanisms 206 and 208. The moving mechanism 206 is, for example, a crane that can move the rotor end 22 in the horizontal direction and the vertical direction by moving the wire. The connecting mechanism 206 is, for example, a ring connected to the rotor end 22. The connecting mechanism 208 is an eyebolt screwed into the hole of the rotor end 22. The moving mechanism 206 moves the rotor end 22 so that the target position of the rotor end 22 is placed in the recess of the lower half 50 and the other portion of the rotor end 22 is placed in the cradle 202. The rotor stand 12 adjusts the radial position of the bearing pad 62 of the rotor fixing mechanism 36 based on the shape of the rotor end 22 before the rotor end 22 is grounded.

Next, the operator removes the connecting mechanism 206 as shown in FIG. Further, the worker fastens the upper half 52 to the lower half 50. Further, a vertical support mechanism 38 is installed between the carrier 32 and the rotor end 22. The order of work is not particularly limited.

Next, as shown in FIG. 12, the operator rotates the rotor end 22 with the rotating mechanism 34 as the rotation axis by the moving mechanism 206 connected to the connecting mechanism 208. Specifically, the rotor end 22 in contact with the cradle 202 is rotated in a direction that moves upward in the vertical direction. The moving mechanism 204 rotates the rotor end 22 until the axial direction of the rotor end 22 is in the vertical direction. When the operator rotates the rotor end 22 at the position shown in FIG. 12, the operator restricts the rotation of the carrier 32 of the rotor stand 12. Specifically, the member may be sandwiched in the rotation direction to regulate the rotation, or the rotation of the rotation mechanism 34 may be regulated.

Next, the operator attaches the rotor disc holding jig 14 to the disc 26 on the lowermost side in the vertical direction of the disc unit 24 in which a plurality of discs 26 are stacked. After that, the moving mechanism 230 is connected to the rotor disk holding jig 14, and the disk unit 24 is moved upward in the vertical direction of the rotor end 22 as shown in FIG. Here, as shown in FIGS. 13 and 14, the moving mechanism 230 has a holding mechanism 232 that maintains the distance between the ropes, and a connecting jig 234 that connects to the suspension piece 112. The holding mechanism 232 is a member that is arranged on the upper side of the disc unit 24 in the vertical direction and is larger than the outer diameter of the disc unit 24. The moving mechanism 230 of the present embodiment is provided with connecting portions 234 at four locations in the circumferential direction from the holding mechanism 232, and each of them is connected to the suspension piece 112. As a result, the moving mechanism 230 can support the disc unit 24 at four locations in the circumferential direction.

The operator moves the disc unit 24 by the moving mechanism 230, stacks the disc unit 24 on the upper side of the rotor end 22 in the vertical direction, and connects the disc unit 24 to the rotor end 22. After that, the operator removes the connecting portion 234 from the hanging piece 112.

Next, as shown in FIG. 15, the operator connects the holding piece 114 and the support column 16 with the connecting jig 18. Here, the connecting shaft 18 includes a connecting portion 154, a rod portion 252, a length adjusting portion 254, and a connecting portion 256. In the connecting shaft 18, the rod portion 252 is a rigid body, and the distance between the plurality of rod portions 252 is adjusted by the length adjusting portion 254. The connecting portion 154 is connected to the holding piece 114. For example, the connecting portion 154 is a plate on which a through hole is formed, the through hole is overlapped with the hole 134 of the holding piece 114, and a rod-shaped member is inserted into the overlapped hole. The connecting portion 256 connects the rod portion 252 and the support column 16. The operator can support the rotor 10 being assembled by the support column 16 by connecting the holding piece 114 and the support column 16 with the connection jig 18.

As described above, the rotor is assembled by using the rotor disk holding jig 14 attached to the disk unit 24 as a transfer jig and a jig for fixing the rotor disk to the support column. Transport and fixing can be performed without replacing the holding jig 14. Thereby, work efficiency can be improved.

Further, as for the method of assembling the rotor, the rotor stand 12 adjusts the rotor fixing mechanism 36 according to the rotor 10, and then the rotor end portion 22 is installed, so that the deviation of the shaft position can be suppressed. Further, it can be used for assembling various rotors 10.

In the method of assembling the rotor, it is not necessary to connect all the rotor disc holding jigs 14 mounted on the disc unit 24 of the rotor 10 to the columns 16. That is, the rotor disc holding jig that is not connected to the support column 16 may be removed from the rotor 10 after the holding disc unit 24 is assembled to the rotor 10. Further, the rotor disk holding jig to be removed may have a structure that does not include the holding piece 114.

The rotor disk holding jig 14 is provided with a hanging piece 112 and a holding piece 114 so that the rotor disk holding jig 14 can be conveyed without replacing the rotor disk holding jig 14 attached to the disk unit 24. Can be fixed. Further, by making the hanging piece 112 and the holding piece 114 separate pieces, it is possible to easily maintain the balance during transportation, and the holding piece 114 can be provided at a position where it does not interfere with each other during transportation. The rotor disk holding jig 14 may be used as both the hanging piece 112 and the holding piece 114, or may be provided at the same position.

Further, the rotor stand 12 has a structure in which the position in the radial direction is variable by the rotor fixing mechanism 36 and the vertical support mechanism 38 can support the load in the vertical direction by the carrier 32, so that the rotor ends of various rotors 10 can be supported. It can be applied to 22. As a result, it is possible to assemble a plurality of rotors 10 with one rotor stand 12, and it is possible to suppress the trouble of installing the rotor stand 12 for each type of rotor 10.

10 Rotor 12 Rotor stand 14 Rotor disk holding jig 16 Strut 18 Connecting jig 22 Rotor end 24 Disk unit 26 Disk 30 Base 32 Carrier 34 Rotating mechanism 36 Rotor fixing mechanism 38 Vertical support mechanism 40 Bearing 42 Trunnion 50 Lower half 52 Upper Half 56 Fastening mechanism 60 Position adjustment mechanism 62 Bearing pad 101 Ring 102, 104 Split ring 106 Fastening mechanism 110 Fitting part 111 Flange 112 Suspended piece 114 Holding piece 202 Cradle 204 Moving mechanism

Claims (11)

Installation steps to install the rotor end on the rotor stand with the axial direction along the vertical direction,
A mounting step that holds the outer circumference of the disc with a rotor disc holding jig,
A laminating step in which a moving mechanism is attached to the rotor disc holding jig for holding the disc, moved, and laminated on the rotor end portion.
A rotor assembly method including a connecting step in which the moving mechanism is removed from the rotor disk holding jig, and the rotor disk holding jig and the columns arranged around the rotor end are connected by a connecting jig. .. The rotor assembly method according to claim 1, wherein the connecting step connects the rotor disk holding jig and the connecting jig at a position different from the position where the moving mechanism is mounted. The rotor assembly method according to claim 1 or 2, wherein the rotor disk holding jig is fitted on the outer periphery of the disk. In the installation step, the rotor end is placed in the lower half of the rotor stand in a direction in which the axial direction is horizontal, and the rotor end is sandwiched between the upper half with the radial holding position of the rotor end as a fixed position. After installing a vertical support mechanism between the horizontal end of the half and the lower half and the rotor end, the upper half and the lower half are rotated so that the rotor end is axially vertical. The rotor assembly method according to any one of claims 1 to 3, wherein the rotors are installed in the same direction. The rotor assembly method according to claim 4, wherein the rotor stand has a rotation mechanism installed in the lower half. A rotor disk holding jig for holding the disk.
A ring having a fitting portion on the inner peripheral surface that fits with the outer circumference of the disc,
A hanging piece that connects to a moving mechanism that lifts the disc,
A rotor disc holding jig including a holding piece to which a connecting jig for connecting to a support column arranged in the vicinity of the assembled disc is attached. The rotor disk holding jig according to claim 6, wherein the holding piece is arranged at a position different from that of the hanging piece in the circumferential direction of the ring. The rotor disk holding jig according to claim 6, wherein the holding piece is the hanging piece. A rotor stand that supports the end of the rotor
Base and
A carrier that includes an upper half and a lower half that connects to the upper half, surrounds the outer circumference of the rotor, and is open in the axial direction of the rotor.
A rotation mechanism connected to the lower half and rotating the lower half with respect to the base in a direction orthogonal to the axial direction of the rotor.
A rotor fixing mechanism that is arranged on the carrier in a state of being movable in the radial direction of the rotor and is in contact with the outer periphery of the rotor to fix the radial position of the rotor.
A rotor stand including a vertically lower surface of the rotor and a vertical support mechanism in contact with the upper vertical surface of the carrier when the rotor is arranged in the vertical direction. The rotor fixing mechanism includes a bolt that is screwed into the carrier and rotates to move in the axial direction of the rotor, and a bearing pad that is arranged on the surface of the bolt on the rotor side and is in contact with the rotor.
The rotor stand according to claim 9, wherein the bearing pad has a shape along the bearing surface of the rotor. The rotor stand according to claim 10, wherein the bearing pad has an area of a surface facing the rotor larger than the diameter of the bolt.

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