CN211841671U - Turbine rotor centering tool - Google Patents
Turbine rotor centering tool Download PDFInfo
- Publication number
- CN211841671U CN211841671U CN202020381969.9U CN202020381969U CN211841671U CN 211841671 U CN211841671 U CN 211841671U CN 202020381969 U CN202020381969 U CN 202020381969U CN 211841671 U CN211841671 U CN 211841671U
- Authority
- CN
- China
- Prior art keywords
- ring
- centering
- central rod
- assembly
- turbine rotor
- 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.)
- Active
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a turbine rotor centering tool, which relates to the technical field of mechanical equipment and comprises a centering component, a connecting component and a detecting component, wherein the outer diameter of the centering component is variable, and the center of the centering component is provided with a sliding through hole extending along the axis; the connecting assembly comprises a central rod and a plurality of limiting pieces; the center rod passes through the sliding through hole and is connected with the centering assembly; the limiting pieces are arranged on the central rod and are respectively positioned at two ends of the centering assembly and/or the detection assembly; the detection assembly is rotatably installed on the central rod, and the detection end of the detection assembly is perpendicular to the axis of the central rod and can move circularly along the axis of the central rod. The utility model discloses a steam turbine rotor centering instrument simple structure, convenient to use, easy operation makes its applicable shaft coupling in different axle holes through the centering subassembly of variable external diameter simultaneously, and adaptability is better.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, especially, relate to a steam turbine rotor centering instrument.
Background
The shaft coupling is a mechanical part used for connecting two shafts (a driving shaft and a driven shaft) in different mechanisms to enable the two shafts to rotate together so as to transmit torque, and in high-speed and heavy-load power transmission, some shaft couplings have the effects of buffering and damping and improving the dynamic performance of a shaft system. The coupling consists of two halves which are respectively connected with the driving shaft and the driven shaft. Generally, a power machine is connected with a working machine by means of a coupler, so that in the transmission process, two half parts of the coupler require high alignment precision to play a good transmission role; if the alignment is not achieved, large shaking can occur in the transmission process, the transmission efficiency is affected, and the arrangement causes damage to the working machine and the coupler.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem and provide a steam turbine rotor centering instrument for whether coaxial alignment in the center of the two halves of detection shaft coupling.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the centering tool for the steam turbine rotor comprises a centering component, a connecting component and a detecting component, wherein the outer diameter of the centering component is variable, and a sliding through hole extending along an axis is formed in the center of the centering component; the connecting assembly comprises a central rod and a plurality of limiting pieces; the center rod penetrates through the sliding through hole and can move relative to the centering assembly; the limiting pieces are arranged on the central rod and are respectively positioned at two ends of the centering assembly and/or the detection assembly; the detection assembly is rotatably installed on the central rod, and the detection end of the detection assembly is perpendicular to the axis of the central rod and can move circularly along the axis of the central rod.
The outer side wall of the centering assembly in the technical scheme is tightly pressed with the inner surface of one half part of the coupler during detection, so that the half part of the coupler is fixed and coaxial with the central rod; the distance between the outer side wall of the other half part of the detection coupling of the detection assembly and the central rod is changed, so that whether the two half parts of the connecting shaft are coaxially aligned can be determined, and the detection tool is simple in structure, convenient to use and easy to operate; meanwhile, the detection assembly rotates along the axis of the central rod, so that the detection assembly is ensured to be coaxial with one half part of the coupler in rotation, 360-degree detection of the other half part of the coupler is realized through coaxial rotation, and the detection precision is further improved; in addition, the outer diameter of the centering assembly is variable, so that the centering assembly can be suitable for couplings with different inner diameters, and the applicability of the tool is improved.
Drawings
The drawings in the following description are only examples of the present application and it will be clear to a person skilled in the art that these drawings and others can be made without inventive effort.
Fig. 1 is a schematic structural diagram of a centering tool in some embodiments of the present invention;
fig. 2 is a schematic structural view of a centering assembly and a coupling assembly in some embodiments of the present invention;
fig. 3 is a schematic view of the internal structure of the centering and connection assemblies in some embodiments of the present invention;
fig. 4 is a schematic view of the connection structure of the L-shaped connecting rod and the central rod according to some embodiments of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
101-a first coupling, 102-a second coupling, 1-a centering component, 11-a tensioning ring, 12-an adjusting ring, 121-an arc-shaped adjusting plate, 1211-a limiting groove, 122-a rubber ring, 13-a rear baffle, 2-a connecting component, 21-a central rod, 22-a limiting component, 221-a first limiting component, 222-a limiting ring, 3-a detecting component, 31-an L-shaped connecting rod, 311-a radial mounting hole, 312-an axial mounting hole, 313-a rotating hole and 32-a distance measuring tool.
Detailed Description
The principles and features of the present invention are described below in conjunction with the drawings, and the examples provided are only for explaining the principles and features of the present invention, and are only for explaining the present invention, but not for limiting the scope of the present invention.
Most of the existing couplings are formed by connecting two halves of a coaxial shaft, and the two halves of the shaft are respectively used for connecting different mechanisms to realize transmission; therefore, the alignment accuracy of the two halves of the coupling has obvious influence on the transmission efficiency and the transmission stability, and a special tool for detecting the alignment accuracy of the two halves of the coupling does not exist at present.
To this end, the present application discloses a turbine rotor centering tool, which is suitable for aligning and detecting two halves of a coupling, and is particularly suitable for aligning and detecting the center of the coupling when the turbine rotor couples wheels. It should be noted that in the following embodiments, for convenience of description, the two halves constituting the coupling are named as the first coupling 101 and the second coupling 102, and the naming is only for convenience of description and distinction and is not used to limit the scope of protection claimed by the present document or the structure/type of the coupling.
The utility model provides a steam turbine rotor centering tool, refer to fig. 1, including centering subassembly 1, coupling assembling 2 and detection component 3, the external diameter of centering subassembly 1 is variable and the center is provided with the slip through-hole that extends along the axis; the connecting assembly 2 comprises a central rod 21 and a plurality of limiting pieces 22; the central rod 21 passes through the sliding through hole and can move relative to the centering assembly 1; the limiting members 22 are arranged on the central rod 21 and are respectively located at two ends of the centering assembly 1 and/or the detecting assembly 3; the detection assembly 3 is rotatably installed on the central rod 21, and the detection end of the detection assembly 3 is perpendicular to the axis of the central rod 21 and can move circularly along the axis of the central rod 21.
In use, the centering component 1 is fitted into the shaft hole of the first coupling 101 and is in close contact with the inner wall of the shaft hole of the first coupling 101, so that the first coupling 101 is not easily moved and is coaxial with the centering component 1.
Meanwhile, the central rod 21 and the centering component 1 are coaxially arranged, so that the central rod 21 and the first coupling 101 are ensured to be coaxial; and the circular rotating path formed by the detecting component 3 when rotating along the central rod 21 is ensured to be coaxial with the first coupling 101, and then the distance change between the outer surface of the second coupling 102 and the detecting end is detected through the detecting end, so that whether the axis of the second coupling 102 is on the same straight line with the first coupling 101 or not can be known, and whether the alignment between the axis of the second coupling 102 and the first coupling 101 is realized or not can be realized.
In some embodiments, the centering assembly 1 includes a tension ring 11 and an adjusting ring 12, the tension ring 11 is sleeved on the central rod 21 through a sliding through hole; the outer diameter of the tension ring 11 gradually increases or decreases along the axis direction; the adjusting ring 12 is nested on the tensioning ring 11, and the outer diameter of the adjusting ring 12 gradually changes along with the extension of the tensioning ring 11 into or the withdrawal of the adjusting ring 12, so that the centering assembly 1 can be suitable for shaft holes of couplers with different inner diameters.
It should be noted that the outer side wall of the adjusting ring 12 is an equal diameter surface with the same diameter, and the inner side wall of the adjusting ring 12 is a variable diameter surface with gradually changing diameter, so that the outer side wall of the adjusting ring 12 is kept in contact with the inner surface of the shaft hole of the first coupling 101 in the largest area, and a better pressing effect is achieved; meanwhile, the adjusting ring 12 and the tension ring 11 are in contact through an inclined plane with gradually changing diameter, so that the tension ring 11 and the adjusting ring 12 are always in surface contact in the changing process of the outer diameter of the adjusting ring 12, and the first coupling 101 is stressed uniformly.
In some embodiments, referring to fig. 2 and 3, the adjusting ring 12 includes at least two arc-shaped adjusting plates 121 and rubber rings 122 matched with the tensioning ring 11, and the inner diameter of the arc-shaped adjusting plates 121 and the outer diameter of the tensioning ring 11 have the same gradual trend; the arc-shaped adjusting plate 121 and the tensioning ring 11 are coaxially arranged; the outer side walls of the arc-shaped adjusting plates 121 are provided with limit grooves 1211 which extend along the adjusting ring 12 in an annular manner; the rubber ring 122 is embedded in the limit groove 1211, and the rubber ring 122 is kept tensioned, so that the plurality of arc-shaped adjusting plates 121 are pressed against the outer surface of the tension ring 11 under the action of the restoring force of the rubber ring 122, and meanwhile, a margin is provided for the tension ring 11 to push the change of the outer diameter of the adjusting ring 12.
It should be noted that, a space is provided between adjacent arc-shaped adjusting plates 121; the inner diameter of a circular ring formed by splicing all the arc-shaped adjusting plates 121 is not larger than the minimum diameter of the tensioning ring 11; when the tension ring 11 exits the adjusting ring 12 and all the arc-shaped adjusting plates 121 are spliced into a circular ring, the rubber ring 122 is also tensioned, so that the rubber ring 122 is not easy to fall off the limiting groove 1211.
In some embodiments, the centering assembly 1 further includes a back plate 13, the back plate 13 is nested on the central rod 21 and has an outer diameter larger than the maximum outer diameter of the tension ring 11, and is used for limiting the positions of the adjusting ring 12 and the first coupling 101, so that when the tension ring 11 extends into the adjusting ring 12, the positions of the adjusting ring 12 and the first coupling 101 are kept unchanged, and the tension ring 11 is pushed into the adjusting ring 12, so that the adjusting ring 12 is pressed against the inner surface of the shaft hole of the first coupling 101.
In some embodiments, the side wall portion or all of the central rod 21 is provided with external threads; the tension ring 11 is in threaded connection with the central rod 21, and the tension ring 11 is screwed into the adjusting ring 12, so that the tension ring 11 does not need to be limited and pushed by the limiting piece 22.
In some embodiments, the side wall portion or all of the central rod 21 is provided with external threads; the tensioning ring 11 is connected with the central rod 21 in a sliding manner; the limiting member 22 is in threaded connection with the central rod 21, and the limiting member 22 located on one side of the large end of the tension ring 11 pushes the tension ring 11 to be screwed into the adjusting ring 12, so that the outer diameter of the adjusting ring 12 is adjusted.
In some embodiments, the detection assembly 3 comprises an L-shaped connecting rod 31 and a distance measuring tool 32; one end of the L-shaped connecting rod 31 is connected to the central rod 21 and can rotate along the axis of the central rod 21; the other end of the L-shaped connecting rod 31 is provided with a radial mounting hole 311 vertical to the axis of the central rod 21; range finding instrument 32 passes through radial mounting hole 311 is installed on L type connecting rod 31, make range finding instrument 32's the perpendicular well core rod 21's of sense terminal axis and to well core rod 21 one side extension, just range finding instrument 32 can be along with L type connecting piece is followed circular motion is to well core rod 21's axis, and the sense terminal that can realize range finding instrument 32 falls the circular on well core rod 21 axis for the center at the walking route that its formation when range finding instrument 32 rotates along well core rod 21, then the route that its sense terminal detected.
Alternatively, the distance measuring tool 32 may be a dial indicator or a digitally displayed sensor such as a photoelectric sensor that may be used for distance testing. When the distance measuring tool 32 is a dial indicator, the detection end of the dial indicator contacts the outer side wall of the second coupling 102 during detection; when the distance measuring tool 32 is a sensor, the sensing end of the sensor does not contact the outer side wall of the second coupling 102.
In some embodiments, referring again to fig. 1, the L-shaped connecting rod 31 includes a segment a and a segment B connected as a single body and perpendicular to each other; one end of the section A is connected with the central rod 21; the section a is further provided with an axial mounting hole 312 parallel to the central rod 21; the distance measuring tool 32 is detachably connected with the L-shaped connecting rod 31 through the axial mounting hole 312 or the radial mounting hole 311.
Note that the radial mounting hole 311 is provided in the B segment.
When the distance measuring tool 32 is mounted on the radial mounting hole 311, for detecting whether the centers of the first coupling 101 and the second coupling 102 are aligned; when the distance measuring tool 32 is mounted in the axial mounting hole 312, the detection principle and method for detecting whether the end faces of the first coupling 101 and the second coupling 102 are aligned in parallel are substantially the same as those for mounting in the radial mounting hole 311, and therefore, the description thereof is omitted.
Alternatively, the distance measuring tool 32 is fixed by a screw or a pin when it is fixed to the L-shaped connecting rod 31 through the radial mounting hole 311 or the axial mounting hole 312.
In some embodiments, referring to fig. 4, the position-limiting members 22 include two first position-limiting members 221 and two second position-limiting members; the two first limiting members 221 are located at two sides of the L-shaped connecting rod 31; the two second limiting parts are positioned at two sides of the centering component 1; a limit ring 222 coaxial with the first limit part 221 is arranged on one side of the first limit part 221; the outer side wall of the limit ring 222 is provided with an inclined plane annularly arranged along the outer side wall of the limit ring 222; the limiting rings 222 of the two first limiting members 221 are disposed opposite to each other; the L-shaped connecting rod 31 is provided with a rotating hole 313; the L-shaped connecting rod 31 is rotatably connected with the central rod 21 through the rotating hole 313; the two ends of the rotating hole 313 are provided with reducing sections with gradually increased inner diameters from inside to outside; the stop collar 222 is partially inserted into the rotation hole 313, and the inclined surface is matched with the variable diameter section.
It should be noted that the two position-limiting rings 222 may be connected or not connected to the first position-limiting members 221, but the two position-limiting rings 222 are located inside the two first position-limiting members 221, so that the two position-limiting rings 222 may be inserted into the rotation holes 313 from two end portions of the rotation holes 313, the rotation holes 313 and the central rod 21 are coaxially arranged, and the L-shaped connecting rod 31 is ensured to rotate along the axis of the central rod 21.
In some embodiments, the first limiting member 221 and the second limiting member are both in threaded connection with the central rod 21, and the first limiting member 221 and the second limiting member are rotated to limit the position of the detecting assembly 3 and the centering assembly 1.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. Steam turbine rotor centering instrument, its characterized in that includes:
the centering assembly (1) is variable in outer diameter, and a sliding through hole extending along an axis is formed in the center of the centering assembly (1);
a connection assembly (2), the connection assembly (2) comprising a central rod (21) and a plurality of limit pieces (22); the central rod (21) is connected with the centering assembly (1) through the sliding through hole; the limiting pieces (22) are arranged on the central rod (21) and are respectively positioned at two ends of the centering assembly (1) and/or the detection assembly (3); and
the detection assembly (3), the rotation of detection assembly (3) is installed on well core rod (21), just the sense terminal of detection assembly (3) with the axis of well core rod (21) is perpendicular and can follow the circular motion is done to the axis of well core rod (21).
2. The turbine rotor centering tool according to claim 1, wherein the centering assembly (1) comprises:
the tensioning ring (11) is sleeved on the central rod (21) through a sliding through hole; the outer diameter of the tension ring (11) is gradually increased or decreased along the axial direction of the tension ring;
the adjusting ring (12) is nested on the tensioning ring (11), and the outer diameter of the adjusting ring (12) gradually changes along with the expansion or retraction of the tensioning ring (11) into or out of the adjusting ring (12).
3. The turbine rotor centering tool according to claim 2, wherein the adjusting ring (12) comprises at least two arc-shaped adjusting plates (121) matched with the tension ring (11), and the inner diameter of each arc-shaped adjusting plate (121) has the same gradual trend as the outer diameter of the tension ring (11); the arc-shaped adjusting plate (121) and the tensioning ring (11) are coaxially arranged; the outer side walls of the arc-shaped adjusting plates (121) are provided with limit grooves (1211) which extend along the annular shape of the adjusting ring (12); and
a rubber ring (122), wherein the rubber ring (122) is embedded into the limit groove (1211), and the rubber ring (122) is kept tensioned.
4. The turbine rotor centering tool according to claim 3, wherein the centering assembly (1) further comprises a backplate (13), the backplate (13) being nested on the central rod (21) and having an outer diameter greater than the maximum outer diameter of the tension ring (11).
5. The turbine rotor centring tool according to claim 2, wherein the side wall portion or all of the central rod (21) is provided with an external thread; the tensioning ring (11) is in sliding connection with the central rod (21); the limiting piece (22) is in threaded connection with the central rod (21).
6. The turbine rotor centring tool according to any of the claims 1 to 5, characterised in that the detecting assembly (3) comprises an L-shaped connecting rod (31) and a distance measuring tool (32); one end of the L-shaped connecting rod (31) is connected with the central rod (21) and can rotate along the axis of the central rod (21); the other end of the L-shaped connecting rod (31) is provided with a radial mounting hole (311) vertical to the axis of the central rod (21); the distance measuring tool (32) is installed on the L-shaped connecting rod (31) through the radial installation hole (311), and the distance measuring tool (32) can do circular motion along the axis of the central rod (21) along with the L-shaped connecting piece.
7. The turbine rotor centring tool according to claim 6, wherein the L-shaped connecting rod (31) comprises a section A and a section B which are integrally connected and perpendicular to each other; one end of the A section is connected with the central rod (21); the section A is also provided with an axial mounting hole (312) parallel to the central rod (21);
the distance measuring tool (32) is detachably connected with the L-shaped connecting rod (31) through the axial mounting hole (312) or the radial mounting hole (311).
8. The turbine rotor centering tool according to claim 6, wherein said retaining members (22) comprise two first retaining members (221) and two second retaining members; the two first limiting parts (221) are positioned at two sides of the L-shaped connecting rod (31); the two second limiting parts are positioned at two sides of the centering component (1);
a limiting ring (222) coaxial with the first limiting piece (221) is arranged on one side of the first limiting piece (221); the outer side wall of the limit ring (222) is provided with an inclined plane annularly arranged along the outer side wall of the limit ring (222); the limiting rings (222) arranged on the two first limiting pieces (221) are oppositely arranged;
a rotating hole (313) is formed in the L-shaped connecting rod (31); the L-shaped connecting rod (31) is rotatably connected with the central rod (21) through the rotating hole (313); the two ends of the rotating hole (313) are provided with reducing sections with gradually increased inner diameters from inside to outside;
the limiting ring (222) is partially embedded into the rotating hole (313), and the inclined surface is matched with the reducing section.
9. The turbine rotor centering tool according to claim 8, wherein the first retaining member (221) and the second retaining member are each threadedly coupled to the central rod (21).
10. The turbine rotor centering tool according to any of claims 7 to 9, wherein the distance measuring tool (32) is a dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020381969.9U CN211841671U (en) | 2020-03-24 | 2020-03-24 | Turbine rotor centering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020381969.9U CN211841671U (en) | 2020-03-24 | 2020-03-24 | Turbine rotor centering tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211841671U true CN211841671U (en) | 2020-11-03 |
Family
ID=73134762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020381969.9U Active CN211841671U (en) | 2020-03-24 | 2020-03-24 | Turbine rotor centering tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211841671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375534A (en) * | 2021-06-16 | 2021-09-10 | 中国航发成都发动机有限公司 | Adjusting device for coaxiality of split type inner cylindrical surface |
| CN114705141A (en) * | 2022-04-22 | 2022-07-05 | 中广核核电运营有限公司 | Parallelism measuring device |
-
2020
- 2020-03-24 CN CN202020381969.9U patent/CN211841671U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375534A (en) * | 2021-06-16 | 2021-09-10 | 中国航发成都发动机有限公司 | Adjusting device for coaxiality of split type inner cylindrical surface |
| CN114705141A (en) * | 2022-04-22 | 2022-07-05 | 中广核核电运营有限公司 | Parallelism measuring device |
| CN114705141B (en) * | 2022-04-22 | 2024-05-10 | 中广核核电运营有限公司 | Parallelism measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211841671U (en) | Turbine rotor centering tool | |
| GB2571612A (en) | Synchronous load of simulating device for double output shafts of scooter drive axle | |
| CN110657988B (en) | Bearing axial test mechanism | |
| CN101299564B (en) | Device for joining motor main axle and encoder | |
| US6685570B2 (en) | Plate adapter for flexible half couplings | |
| CN210141949U (en) | Torque sensor | |
| CN205689631U (en) | Rubbercushioned sleeve bearing coupling | |
| CN112013096A (en) | High-speed long shaft intermediate support device | |
| CN217930142U (en) | Centering alignment frock of rigid coupling | |
| CN105547534A (en) | Elastic support capable of measuring axial load of rotor | |
| CN213451398U (en) | Split type duplex expansion coupling sleeve | |
| CN210153107U (en) | Flexible coupling integrating radial bearing and thrust bearing | |
| EP1764605B1 (en) | Cone penetrometer | |
| CN209961237U (en) | Indexing type photoelectric angle encoder | |
| CN114198415A (en) | Drive coupling for high-speed rotating brush | |
| CN210196108U (en) | Dynamic balance mandrel with end teeth and impeller mounting structure | |
| CN220850468U (en) | Special coupling of little moment of torsion of electronic trade | |
| CN113566775A (en) | Flange shaft concentricity detection tool | |
| CN216134064U (en) | Quick connector | |
| CN201037470Y (en) | Receded disk impeller radial end-face pin connecting device | |
| CN220357274U (en) | Optical fiber slip ring | |
| CN111843926B (en) | Locomotive traction motor combined debugging method and system tool | |
| CN217032351U (en) | Reflector device for detecting rotation error of precise shafting | |
| CN113048264B (en) | Dynamic balance mechanical plane rotary valve | |
| CN209313548U (en) | Motor dynamic balancing material reducing auxiliary device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |