CN216554041U - Rotor connecting piece of steam turbine barring gear and steam turbine barring gear - Google Patents
Rotor connecting piece of steam turbine barring gear and steam turbine barring gear Download PDFInfo
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- CN216554041U CN216554041U CN202123066586.6U CN202123066586U CN216554041U CN 216554041 U CN216554041 U CN 216554041U CN 202123066586 U CN202123066586 U CN 202123066586U CN 216554041 U CN216554041 U CN 216554041U
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- flange ring
- steam turbine
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- ring
- gear
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Abstract
The utility model provides a rotor connecting piece of a steam turbine barring gear, which is of an integrally formed integrated structure and comprises a first flange ring (10), a second flange ring (20), a gear ring (30) and a transition connecting part (40). The first flange ring (10) is used for connecting a rotor shaft of a steam turbine. The second flange ring (20) is used for connecting the coupling. The gear ring (30) is used for meshing with a meshing mechanism of the steam turbine turning gear. The first flange ring (10), the second flange ring (20) and the gear ring (30) are coaxially arranged. The transition connecting part (40) is positioned between the first flange ring (10) and the second flange ring (20), and two ends of the transition connecting part are respectively connected with the first flange ring (10) and the second flange ring (20). The rotor connecting piece is beneficial to improving the stability of the steam turbine rotor in the rotating process. In addition, a steam turbine turning gear is also provided.
Description
Technical Field
The utility model relates to a rotor connecting piece of a steam turbine turning gear and the steam turbine turning gear comprising the same.
Background
Before the turbine is rushed to rotate and after the turbine is stopped, the thermal bending of the rotor can be eliminated through the turbine turning gear. The turning gear of the steam turbine also has the functions of reducing the temperature difference between the upper cylinder and the lower cylinder and reducing the impulse torque, and can also check whether friction exists between the moving and static parts of the steam turbine and whether the lubricating system works normally before starting.
In order to ensure that the coupling does not interfere with the housing of the turning gear, an adapter section is usually provided, via which the toothed ring of the steam turbine turning gear is connected to the coupling. The structure increases the length and weight of the rear bearing cantilever, and can cause local vibration to increase when the rotor passes through the critical rotating speed.
Disclosure of Invention
The utility model aims to provide a rotor connecting piece of a steam turbine turning gear, which is beneficial to improving the stability of a steam turbine rotor in a rotating process.
It is another object of the present invention to provide a steam turbine turning gear that facilitates improved stability of the steam turbine rotor during rotation.
The utility model provides a rotor connecting piece of a steam turbine turning gear, which is of an integrally formed integrated structure and comprises a first flange ring, a second flange ring, a gear ring and a transition connecting part. The first flange ring is used for connecting a rotor shaft of a steam turbine. The second flange ring is used for connecting the coupling. The gear ring is used for meshing with a meshing mechanism of the steam turbine turning gear. The first flange ring, the second flange ring and the gear ring are coaxially arranged. The transition connecting part is positioned between the first flange ring and the second flange ring, and two ends of the transition connecting part are respectively connected with the first flange ring and the second flange ring.
This steam turbine barring gear's rotor connecting piece is integrated into one piece's integral type structure, can lug connection rotor shaft and shaft coupling, need not the switching section, borrows this to do benefit to and reduces the length and the weight of connecting back overall structure, does benefit to the stability that improves steam turbine rotor at the rotation in-process.
In another exemplary embodiment of a rotor connection of a steam turbine turning gear, a toothed ring is provided at a circumferential outer edge of the first flange ring. The toothed ring is arranged at one end, close to the rotor connecting piece, of the rotor shaft, so that the stability of the steam turbine rotor in the rotating process is further improved.
In yet another exemplary embodiment of the rotor coupling of the steam turbine barring gear, the rotor coupling further comprises a positioning portion. The positioning part is connected with the inner edge of the first flange ring and is provided with a round hole which is coaxially arranged with the first flange ring. The hole wall of the circular hole is used for being attached to the end part of a rotor shaft of the steam turbine so that the axis of the rotor shaft is overlapped with the axis of the first flange ring. So as to be beneficial to improving the coaxiality of the rotor shaft and the rotor connecting piece.
In a further exemplary embodiment of the rotor connection of the steam turbine barring gear, the transitional connection is a rotary body with the axis of the first flange ring as the axis of rotation and is tubular. Therefore, the weight can be reduced, and the stability of the steam turbine rotor in the rotating process can be further improved.
In a further exemplary embodiment of the rotor connection of the steam turbine turning gear, one end of the transitional connection in its axial direction is connected to the inner edge of the first flange ring and the other end is connected to the inner edge of the second flange ring. Thereby being favorable to reducing the average external diameter of the transition connecting part and being favorable to reducing weight.
In yet another exemplary embodiment of a rotor connection for a steam turbine barring gear, the transition connection comprises a straight pipe portion and a tapered portion distributed along an axial direction thereof. The straight pipe part extends along the axial direction of the transition connecting part, and the conical part is in a conical pipe shape. The conical part in the shape of a cone pipe is arranged to adapt to the change of the inner diameter, so that the volume and the weight of the transition connecting part are reduced.
In a further exemplary embodiment of the rotor connection of the steam turbine barring gear, the distance of the screw holes of the first flange ring to the axis is smaller than the distance of the screw holes of the second flange ring to the axis. One end of the straight pipe part is connected with the small-diameter end of the conical part, and the other end of the straight pipe part is connected with the inner edge of the first flange ring. The large diameter end of the conical portion is connected to the inner edge of the second flange ring. To facilitate reducing the weight of the transition joint.
In yet another exemplary embodiment of a rotor coupling for a steam turbine barring gear, the rotor coupling is an integrally forged and milled one-piece structure. To have a high structural strength.
The utility model also provides a steam turbine turning gear which comprises the rotor connecting piece, the meshing mechanism and the motor. The engagement mechanism is capable of engaging with the toothed ring. The motor can drive the meshing mechanism to act so as to drive the rotor connecting piece to rotate. This steam turbine barring device, its rotor connecting piece be integrated into one piece's integral type structure, can lug connection rotor shaft and shaft coupling, need not the switching section, borrow this to do benefit to and reduce the length and the weight of connecting back overall structure, do benefit to the stability that improves steam turbine rotor at the rotation in-process.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
FIG. 1 is a perspective view of an exemplary embodiment of a rotor coupling for a steam turbine barring gear.
Fig. 2 is a side view of a rotor coupling member of the steam turbine turning gear shown in fig. 1.
Fig. 3 is a cross-sectional view of a rotor coupling member of the steam turbine turning gear shown in fig. 1.
Fig. 4 is a schematic illustration of an exemplary embodiment of a steam turbine turning gear.
Description of the reference symbols
10 first flange ring
11 screw hole of first flange ring
20 second flange ring
21 screw hole of second flange ring
30 toothed ring
40 transitional joint
41 straight pipe portion
42 taper portion
50 positioning part
51 round hole
60 meshing mechanism
70 electric machine
80 rotor shaft
90 shaft coupling
L the axis of the first flange ring.
Detailed Description
In order to more clearly understand the technical features, objects and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings refer to the same or similar structural or functional components.
"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.
In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product.
FIG. 1 is a perspective view of an exemplary embodiment of a rotor coupling for a steam turbine barring gear. Fig. 2 is a side view of a rotor coupling member of the steam turbine turning gear shown in fig. 1. Fig. 3 is a cross-sectional view of a rotor coupling member of the steam turbine turning gear shown in fig. 1. As shown in fig. 1 to 3, the rotor connecting member of the steam turbine turning gear is an integrally formed one-piece structure and includes a first flange ring 10, a second flange ring 20, a ring gear 30, and a transition joint portion 40.
Referring to fig. 4, the first flange ring 10 is used for bolting a rotor shaft 80 of a steam turbine. The second flange ring 20 is used to connect the coupling 90 by bolts. The ring gear 30 is used for meshing with an engagement mechanism 60 of the steam turbine turning gear. The first flange ring 10, the second flange ring 20, and the ring gear 30 are coaxially disposed such that the rotor shaft 80 overlaps with the axis of the coupling 90. The transition connection portion 40 is located between the first flange ring 10 and the second flange ring 20, and two ends of the transition connection portion are respectively connected with the first flange ring 10 and the second flange ring 20. Depending on the actual situation, the shape of the transition connection 40 can be designed appropriately to avoid unnecessary interference of the coupling 90 with the barring gear.
This steam turbine barring gear's rotor connecting piece is integrated into one piece's integral type structure, can lug connection rotor shaft 80 and shaft coupling 90, need not the switching section, borrows this to do benefit to and reduces the length and the weight of connecting back overall structure, does benefit to the stability that improves steam turbine rotor at the rotation in-process.
As shown in fig. 1 to 3, in the exemplary embodiment, the toothed ring 30 is provided at the circumferential outer edge of the first flange ring 10. The ring gear 30 is disposed at the end of the rotor shaft 80 adjacent the rotor connection to further improve the stability of the turbine rotor during rotation.
As shown in fig. 1 to 3, in the exemplary embodiment, the rotor coupling further includes a positioning portion 50. The positioning portion 50 is connected to the inner edge of the first flange ring 10 and has a circular hole 51 coaxially disposed with the first flange ring 10. Referring to fig. 4, the hole wall of the circular hole 51 is adapted to be fitted to an end portion of a rotor shaft 80 of the steam turbine so that the axis of the rotor shaft 80 overlaps with the axis L of the first flange ring 10. To facilitate improved alignment of rotor shaft 80 with the rotor connection.
As shown in fig. 1 to 3, in the exemplary embodiment, the intermediate connection portion 40 is a rotary body having the axis L of the first flange ring 10 as the rotation axis and is tubular. Therefore, the weight can be reduced, and the stability of the steam turbine rotor in the rotating process can be further improved.
As shown in fig. 1 to 3, in the exemplary embodiment, one end (i.e., the left end in fig. 3) of the transition portion 40 in the axial direction thereof is connected to the inner edge of the first flange ring 10, and the other end (i.e., the right end in fig. 3) is connected to the inner edge of the second flange ring 20. Thereby facilitating a reduction in the average outer diameter of the transition joint 40 and facilitating a reduction in weight.
As shown in fig. 1 to 3, in the exemplary embodiment, the inner diameter of the first flange ring 10 is smaller than the inner diameter of the second flange ring 20, and the distance from the screw hole 11 of the first flange ring 10 to the axis is smaller than the distance from the screw hole 21 of the second flange ring 20 to the axis. The transition connection 40 comprises a straight tube portion 41 and a tapered portion 42 distributed in the axial direction thereof. The straight tube portion 41 extends in the axial direction of the transition connection portion 40, and the tapered portion 42 has a tapered tubular shape (i.e., extends along the side surface of the truncated cone). One end of the straight tube portion 41 is connected to the small diameter end of the tapered portion 42, and the other end of the straight tube portion 41 is connected to the inner edge of the first flange ring 10. The large diameter end of the tapered portion 42 engages the inner edge of the second flange ring 20. When the inner diameter of the first flange ring 10 is not equal to the inner diameter of the second flange ring 20, the conical part 42 in the shape of a cone is arranged to adapt to the change of the inner diameter, so that the volume and the weight of the transition connection part are reduced.
As shown in fig. 1-3, in an exemplary embodiment, the rotor connector is an integrally forged and milled unitary structure. To have a high structural strength.
The present invention also provides a steam turbine barring apparatus, and fig. 4 is used to illustrate an exemplary embodiment of the steam turbine barring apparatus. As shown in fig. 4, the steam turbine turning gear includes a rotor connecting member shown in fig. 1, an engagement mechanism 60, and a motor 70. The engagement mechanism 60 can be engaged with the ring gear 30. The motor 70 can drive the engagement mechanism 60 to rotate to drive the rotor connection member. The rotating rotor connection can rotate the rotor shaft 80 and the coupling 90.
This steam turbine barring gear, its rotor connecting piece are integrated into one piece's integral type structure, can lug connection rotor shaft 80 and shaft coupling 90, need not the switching section, borrow this to do benefit to and reduce the length and the weight of connecting back overall structure, do benefit to the stability that improves steam turbine rotor at the rotation in-process.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.
Claims (9)
1. Steam turbine barring gear's rotor connecting piece, its characterized in that, rotor connecting piece just includes for integrated into one piece's integral type structure:
a first flange ring (10) for connecting a rotor shaft of a steam turbine;
a second flange ring (20) for connecting the coupling;
a toothed ring (30) for meshing with an engagement mechanism of a steam turbine turning gear, the first flange ring (10), the second flange ring (20) and the toothed ring (30) being coaxially arranged; and
a transition connection (40) between the first flange ring (10) and the second flange ring (20) and connecting the first flange ring (10) and the second flange ring (20) at both ends, respectively.
2. The steam turbine turning gear rotor connecting member according to claim 1, characterized in that the ring gear (30) is provided to a circumferential outer edge of the first flange ring (10).
3. The rotor connecting member of the steam turbine turning gear according to claim 1, characterized in that the rotor connecting member further comprises a positioning portion (50), the positioning portion (50) is connected to an inner edge of the first flange ring (10) and has a circular hole (51) coaxially arranged with the first flange ring (10), and a hole wall of the circular hole (51) is used for being attached to an end portion of a rotor shaft of the steam turbine so that the axis of the rotor shaft overlaps with the axis of the first flange ring (10).
4. The steam turbine turning gear rotor connection according to claim 1, characterized in that the transition connection (40) is a rotary body having an axis of rotation of the axis of the first flange ring (10) and is tubular.
5. The rotor connecting member of a steam turbine turning gear according to claim 4, characterized in that one end of the transition connecting portion (40) in its axial direction is connected to the inner edge of the first flange ring (10) and the other end is connected to the inner edge of the second flange ring (20).
6. The rotor connecting member of a steam turbine turning gear according to claim 5, characterized in that the transition connecting portion (40) includes a straight pipe portion (41) and a tapered portion (42) distributed along an axial direction thereof, the straight pipe portion (41) extending in the axial direction of the transition connecting portion (40), and the tapered portion (42) having a tapered tubular shape.
7. The steam turbine turning gear rotor connecting member according to claim 6, characterized in that the screw holes of the first flange ring (10) are located at a smaller distance from the axis than the screw holes of the second flange ring (20), one end of the straight pipe portion (41) is connected to the small diameter end of the tapered portion (42), the other end of the straight pipe portion (41) is connected to the inner edge of the first flange ring (10), and the large diameter end of the tapered portion (42) is connected to the inner edge of the second flange ring (20).
8. The steam turbine turning gear rotor coupling of claim 1, wherein the rotor coupling is a one-piece structure that is integrally forged and milled.
9. Steam turbine barring device, its characterized in that includes:
a rotor connection member as claimed in any one of claims 1 to 8;
an engagement mechanism (60) engageable with the ring gear (30); and
and the motor (70) can drive the meshing mechanism (60) to act so as to drive the rotor connecting piece to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123066586.6U CN216554041U (en) | 2021-12-08 | 2021-12-08 | Rotor connecting piece of steam turbine barring gear and steam turbine barring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123066586.6U CN216554041U (en) | 2021-12-08 | 2021-12-08 | Rotor connecting piece of steam turbine barring gear and steam turbine barring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216554041U true CN216554041U (en) | 2022-05-17 |
Family
ID=81541256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123066586.6U Active CN216554041U (en) | 2021-12-08 | 2021-12-08 | Rotor connecting piece of steam turbine barring gear and steam turbine barring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216554041U (en) |
-
2021
- 2021-12-08 CN CN202123066586.6U patent/CN216554041U/en active Active
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