CN211476978U - Special tool for centering turbine rotor coupling - Google Patents
Special tool for centering turbine rotor coupling Download PDFInfo
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- CN211476978U CN211476978U CN202020437078.0U CN202020437078U CN211476978U CN 211476978 U CN211476978 U CN 211476978U CN 202020437078 U CN202020437078 U CN 202020437078U CN 211476978 U CN211476978 U CN 211476978U
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- rotor
- wheel
- meter frame
- dial indicator
- guide rod
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Abstract
The utility model discloses a special tool for centering a turbine rotor in a pair wheel, which comprises a first rotor pair wheel, a second rotor pair wheel, a guide rod, a fastening nut, a meter frame, a dial indicator and a locking bolt; the guide rod is provided with external threads, penetrates through the bolt holes of the first rotor coupling, is provided with two ends outside the bolt holes of the first rotor coupling, and is fixed with the first rotor coupling through fastening nuts respectively. The advantages are that: the utility model has simple structure, realizes the relative fixation of the guide rod and the first rotor coupling wheel through the locking nut, and can eliminate the defect of unstable magnetic force of the traditional magnetic gauge stand; the meter frame is of an integrally arranged inverted L-shaped structure, and the free end of the vertical section of the inverted L-shaped meter frame is welded and fixed with the locking nut, so that the overall stability is enhanced, the measurement accuracy of the dial indicator is improved, and the wheel alignment accuracy of the rotor is improved; the utility model is simple in operation, convenient to use has improved the work efficiency of rotor wheel alignment.
Description
The technical field is as follows:
the utility model relates to an overhaul the instrument, especially relate to a steam turbine rotor wheel alignment specialized tool.
Background art:
the steam turbine is one of the important equipment of the power plant, and when a rotor of the steam turbine is installed, overhauled and connected, the precision requirement on the wheel alignment center is very high, and the precision quality of the wheel alignment center directly influences the overall quality and the operation safety of the steam turbine. Usually, when installing and overhauing, the rotor all uses the percentage table to measure the circumference deviation of rotor pair wheel, and then realizes looking for the center, but because the interval is little between the pair wheel, has increased the degree of difficulty for fixed percentage table. At present, a dial indicator magnetic gauge seat is often erected on one pair of wheels of a rotor, the connection angle of two frame rods is adjusted to enable a measuring rod of the dial indicator to point on the circumferential surface of the other pair of wheels, the rotor is coiled, and the reading of the dial indicator is recorded to calculate the circumferential deviation value of the rotor to the wheels. In the measurement of the disk-moving rotor, once the magnetic force of the magnetic gauge seat is weakened, the adsorption is easy to be unstable, so that the dial gauge is shaken, and the measurement accuracy is influenced; meanwhile, in the rotating process of the rotor, the connecting bolts of the two rack rod supports are easy to loosen, and inaccurate measured data can be caused, so that the precision quality of the rotor in centering the wheel is reduced.
The utility model has the following contents:
an object of the utility model is to provide a simple structure, convenient to use's steam turbine rotor wheel alignment specialized tool.
The utility model discloses by following technical scheme implement:
the special tool for centering the paired wheels of the steam turbine rotor comprises a first rotor paired wheel, a second rotor paired wheel, a guide rod, a fastening nut, a meter frame, a dial indicator and a locking bolt;
the guide rod is provided with external threads, penetrates through the bolt holes of the first rotor paired wheels, is provided with two ends outside the bolt holes of the first rotor paired wheels, and is relatively fixed with the first rotor paired wheels through the fastening nuts respectively;
the meter frame is an inverted L-shaped frame rod, the free end of the vertical section of the meter frame is fixedly connected with the fastening nut close to the second rotor pair wheel, the tail part of the free end of the horizontal section of the meter frame is provided with a fixing hole, and the axial direction of the fixing hole is vertical to the axial direction of the horizontal section of the meter frame;
a measuring rod of the dial indicator penetrates through the fixing hole, and a contact of the dial indicator is perpendicular to and in contact with the outer circumferential surface of the second rotor paired wheel;
the tail end of the locking bolt penetrates through the end part of the horizontal section of the meter frame and is arranged in the fixing hole to be abutted against the measuring rod of the dial indicator.
The utility model has the advantages that:
the utility model has simple structure, realizes the relative fixation of the guide rod and the first rotor coupling wheel through the locking nut, and can eliminate the defect of unstable magnetic force of the traditional magnetic gauge stand; the meter frame is of an integrally arranged inverted L-shaped structure, and the free end of the vertical section of the inverted L-shaped meter frame is welded and fixed with the locking nut, so that the overall stability is enhanced, the measurement accuracy of the dial indicator is improved, and the wheel alignment accuracy of the rotor is improved; the utility model is simple in operation, convenient to use has improved the work efficiency of rotor wheel alignment.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present embodiment;
in the figure: the device comprises a first rotor pair wheel 1, a second rotor pair wheel 2, a guide rod 3, a fastening nut 4, a meter frame 5, a dial indicator 6, a locking bolt 7 and a special pin 8.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
the special tool for centering the turbine rotor pair shown in fig. 1 comprises a first rotor pair wheel 1, a second rotor pair wheel 2, a guide rod 3, a fastening nut 4, a meter frame 5, a dial indicator 6 and a locking bolt 7;
the guide rod 3 is provided with an external thread matched with the internal thread of the fastening nut 4, the guide rod 3 penetrates through the bolt hole of the first rotor pair wheel 1, two ends of the guide rod are arranged outside the bolt hole of the first rotor pair wheel 1, and the guide rod and the first rotor pair wheel 1 are fixed relatively through the fastening nut 4.
The meter frame 5 is an inverted L-shaped frame rod, the free end of the vertical section of the meter frame 5 is welded and fixed with the fastening nut 4 close to the second rotor pair wheel 2, the tail part of the free end of the horizontal section of the meter frame 5 is provided with a fixing hole, and the axial direction of the fixing hole is vertical to the axial direction of the horizontal section of the meter frame 5; a measuring rod of the dial indicator 6 penetrates through the fixing hole, and a contact of the dial indicator 6 is perpendicular to and in contact with the outer circumferential surface of the second rotor pair wheel 2; the tail end of the locking bolt 7 penetrates through the end part of the horizontal section of the meter frame 5 and is arranged in the fixing hole to be abutted against the measuring rod of the dial indicator 6, so that the measuring rod of the dial indicator 6 is relatively fixed with the meter frame 5.
When the embodiment is used, the embodiment is firstly installed according to the connection relation and the position relation, and the fastening reliability of each connection part is ensured; after the mounting is completed, the first pair of wheels 1 and the second pair of wheels 2 are aligned according to the corresponding combination marks and are connected by means of the special pins 8. The rotor is turned by a travelling crane or a special tool, so that the dial indicator rods are sequentially aligned to the positions of 0 degrees, 90 degrees, 180 degrees and 270 degrees, the readings of the dial indicators are respectively recorded, namely b1, b2, b3 and b4, the readings are substituted into the existing formulas (b1-b3)/2 and (b2-b4)/2, the deviation values of the centers of the pairs of wheels of the rotor in the upper direction, the lower direction and the left direction and the right direction respectively can be calculated, if any deviation value exceeds a design index, the pair of wheels of one rotor is measured again after being finely adjusted until the two calculated deviation values of the centers of the pairs of the wheels of the rotor both meet the design index.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The special tool for centering the paired wheels of the steam turbine rotor comprises a first rotor paired wheel and a second rotor paired wheel, and is characterized by further comprising a guide rod, a fastening nut, a meter frame, a dial indicator and a locking bolt;
the guide rod is provided with external threads, penetrates through the bolt holes of the first rotor paired wheels, is provided with two ends outside the bolt holes of the first rotor paired wheels, and is relatively fixed with the first rotor paired wheels through the fastening nuts respectively;
the meter frame is an inverted L-shaped frame rod, the free end of the vertical section of the meter frame is fixedly connected with the fastening nut close to the second rotor pair wheel, the tail part of the free end of the horizontal section of the meter frame is provided with a fixing hole, and the axial direction of the fixing hole is vertical to the axial direction of the horizontal section of the meter frame;
a measuring rod of the dial indicator penetrates through the fixing hole, and a contact of the dial indicator is perpendicular to and in contact with the outer circumferential surface of the second rotor paired wheel;
the tail end of the locking bolt penetrates through the end part of the horizontal section of the meter frame and is arranged in the fixing hole to be abutted against the measuring rod of the dial indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437078.0U CN211476978U (en) | 2020-03-30 | 2020-03-30 | Special tool for centering turbine rotor coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437078.0U CN211476978U (en) | 2020-03-30 | 2020-03-30 | Special tool for centering turbine rotor coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211476978U true CN211476978U (en) | 2020-09-11 |
Family
ID=72364166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020437078.0U Active CN211476978U (en) | 2020-03-30 | 2020-03-30 | Special tool for centering turbine rotor coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211476978U (en) |
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2020
- 2020-03-30 CN CN202020437078.0U patent/CN211476978U/en active Active
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