CN210422699U - Steam turbine rotor structure - Google Patents
Steam turbine rotor structure Download PDFInfo
- Publication number
- CN210422699U CN210422699U CN201920766136.1U CN201920766136U CN210422699U CN 210422699 U CN210422699 U CN 210422699U CN 201920766136 U CN201920766136 U CN 201920766136U CN 210422699 U CN210422699 U CN 210422699U
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- rotor
- steam turbine
- blade
- groove
- mounting groove
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- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model discloses a steam turbine rotor structure relates to steam turbine rotor's technical field, aims at solving traditional rotor and adjusts dynamic balance's problem, and its technical scheme main points are: including the rotor and connect in the Y-shaped blade of rotor, the rotor lateral wall is connected with the mount pad, annular mounting groove has been seted up with the rotor is coaxial to the mount pad, sliding joint has a plurality of middle blades in the mounting groove, the mounting groove lateral wall has radially seted up along the rotor and has locked the groove, lock inslot is worn to be equipped with last blade, lock the inslot and be provided with and be used for the locking subassembly to last blade locking, the mount pad lateral wall is provided with the adjusting part who is used for adjusting dynamic balance. The utility model discloses a steam turbine rotor structure has the advantage that can carry out dynamic balance to the rotor and adjust.
Description
Technical Field
The utility model belongs to the technical field of steam turbine rotor's technique and specifically relates to a steam turbine rotor structure is related to.
Background
The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants.
At present, chinese patent publication No. CN106271378B discloses a method for assembling forked blades on a steam turbine rotor, where all forked blades on the steam turbine rotor are standard pieces, and the method for assembling all forked blades includes: firstly), arranging a wedge block for positioning the blade root of a first blade in a wheel groove of a rim of an impeller of a steam turbine rotor; secondly), positioning all the fork-shaped blades into the wheel groove one by one, wherein a process gasket is arranged between every two adjacent fork-shaped blades; and thirdly) replacing all the process gaskets with the spacing pieces, and inserting one spacing piece between the adjacent fork blades of the whole circle of fork blades to finish the assembly of the fork blades.
The above prior art solutions have the following drawbacks: the last blade needs to be locked after all the blades are installed, and due to various factors such as installation and the like, the problem of unbalance of the rotor during rotation is often caused. Therefore, a new technical solution is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a steam turbine rotor structure has adjustable rotor dynamic balance's advantage.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a steam turbine rotor structure, includes the rotor and connects in the Y-shaped blade of rotor, the rotor lateral wall is connected with the mount pad, annular mounting groove has been seted up with the rotor is coaxial to the mount pad, the slip joint has a plurality of middle blades in the mounting groove, the mounting groove lateral wall has radially seted up the locking groove along the rotor, the locking inslot is worn to be equipped with last blade, the locking groove is provided with and is used for the locking subassembly of last blade, the mount pad lateral wall is provided with and is used for adjusting dynamic balance's adjusting part.
Through adopting above-mentioned technical scheme, insert the mounting groove back with middle blade in, the middle blade that slides makes a plurality of middle blades arrange neatly in the mounting groove to make a plurality of middle blades distribute along the border of rotor, the locking inslot is installed to last blade at last, and lock last blade at the locking inslot through locking Assembly, thereby prevent that middle blade from taking place not hard up phenomenon, and guarantee the installation fastness of last blade.
The utility model discloses further set up to: the locking assembly comprises a first pin hole and a second pin hole which are arranged on the mounting seat and the blade root in a penetrating mode, and a first fixing pin and a second fixing pin are arranged in the first pin hole and the second pin hole in a penetrating mode respectively.
Through adopting above-mentioned technical scheme, after penetrating the blade root of last blade into locking groove, realize the chucking through first fixed pin and second fixed pin to last blade and fix.
The utility model discloses further set up to: the mounting groove cross-section is the T shape setting, the blade root part of middle leaf is the T shape setting with mounting groove complex.
Through adopting above-mentioned technical scheme, after inserting the mounting groove with the blade root position of middle blade, through the blade root of T shape and the cooperation of T shape mounting groove for middle blade can slide along annular mounting groove, and can not throw away the blade when the rotor rotates.
The utility model discloses further set up to: the first pin hole and the second pin hole are both taper holes, and the taper is 1: 100.
Through adopting above-mentioned technical scheme, like this with first fixed pin and second fixed pin insert first pinhole and second pinhole when, along with first fixed pin and second fixed pin insert for connect more firmly.
The utility model discloses further set up to: the adjusting component comprises an annular balance groove formed in the side wall of the mounting seat, balance blocks are arranged in the balance groove, the balance blocks are arranged along the radial direction of the balance groove, threaded holes are formed in the positions where the two balance blocks are in contact, and hexagon socket head cap screws penetrate through the threaded holes.
Through adopting above-mentioned technical scheme, the balancing piece is square setting, when discovering rotor periphery rotation unbalance through dynamic balance test, can be in the balancing tank through hexagon socket head cap screw fixed balancing piece, and arrange along the axial of rotor has two, per two balancing pieces are a set of, the balancing piece is provided with a plurality of groups along the circumference of balancing tank, through the fixed balancing piece in the less one side of rotor gravity, thereby adjust the circumference gravity balance of rotor, screw up through hexagon socket head cap screw fixation at last.
The utility model discloses further set up to: the cross-section of the balance groove is in a U-shaped arrangement, and the two side walls of the balance groove are arranged towards the opening end in an inward inclined mode.
Through adopting above-mentioned technical scheme, inlay the balancing piece back in the compensating groove like this, to the hexagon socket head cap screw of screwing up in the threaded hole, the force towards both sides is applyed to every group balancing piece to hexagon socket head cap screw for the balancing piece stretches into the one end of compensating groove and expands outward to both sides, and forms the extrusion with the compensating groove inner wall, makes the balancing piece support tightly fixedly with the inner wall of compensating groove, thereby fixes in the compensating groove more firmly with the balancing piece.
To sum up, the utility model discloses a beneficial technological effect does:
1. after the middle blades are inserted into the mounting grooves, the middle blades are slid to enable the plurality of middle blades to be orderly arranged in the mounting grooves, so that the plurality of middle blades are distributed along the edge of the rotor, the last blades are finally mounted in the locking grooves, and the last blades are locked in the locking grooves through the locking assemblies, so that the loosening phenomenon of the middle blades is prevented, and the mounting firmness of the last blades is ensured;
2. the balancing piece is square setting, when discovering rotor periphery rotation unbalance through dynamic balance test, can be at the balancing inslot through hexagon socket head cap screw fixed balancing piece to arrange along the axial of rotor has two, per two balancing pieces are a set of, and the balancing piece is provided with a plurality of groups along the circumference of balancing groove, through the fixed balancing piece in the less one side of rotor gravity, thereby adjusts the circumference gravity balance of rotor, screws up through hexagon socket head cap screw fixation at last.
Drawings
Fig. 1 is a schematic structural view of the middle blade of the present invention after installation.
Fig. 2 is a schematic structural view of the installed end blade of the present invention.
Fig. 3 is a schematic structural diagram of the adjusting assembly of the present invention.
In the figure, 1, rotor; 2. a forked blade; 3. a mounting seat; 4. mounting grooves; 5. a middle blade; 6. a locking groove; 7. a last leaf; 8. a locking assembly; 9. an adjustment assembly; 10. a first pin hole; 11. a second pin hole; 12. a first fixing pin; 13. a second fixing pin; 16. a balancing tank; 17. a counterbalance; 18. and (4) an inner hexagon bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a steam turbine rotor structure, including rotor 1 and the forked blade 2 of connection at rotor 1 periphery, there is mount pad 3 at rotor 1 lateral wall integrated into one piece, be annular and seted up mounting groove 4 with rotor 1 is coaxial on mount pad 3, sliding joint has a plurality of middle blades 5 in mounting groove 4, the blade root sliding joint of middle blade 5 is in mounting groove 4, locking groove 6 has been seted up at the lateral wall of mounting groove 4 and along the radial of rotor 1, last blade 7 wears to be equipped with in locking groove 6, still be provided with the locking subassembly 8 that is used for locking last blade 7 on locking groove 6; after inserting middle blade 5 in mounting groove 4, the slip middle blade 5 makes a plurality of middle blades 5 arrange neatly in mounting groove 4 to make a plurality of middle blades 5 distribute along rotor 1's border, locking groove 6 is installed to last blade 7 at last, and locks last blade 7 in locking groove 6 through locking Assembly 8, thereby prevent middle blade 5 from taking place not hard up phenomenon, and guarantee last blade 7's installation fastness.
As shown in fig. 2, the locking assembly 8 includes a first pin hole 10 and a second pin hole 11 transversely penetrating the mounting seat 3 and the blade root, and a first fixing pin 12 and a second fixing pin 13 respectively penetrate the first pin hole 10 and the second pin hole 11; after the blade root of the last blade 7 is inserted into the locking groove 6, the last blade 7 is clamped and fixed by the first fixing pin 12 and the second fixing pin 13.
As shown in fig. 1, the section of the mounting groove 4 is arranged in a T shape, and the blade root part of the middle blade 5 is arranged in a T shape matched with the mounting groove 4; after the blade root part of the middle blade 5 is inserted into the mounting groove 4, the middle blade 5 can slide along the annular mounting groove 4 through the matching of the T-shaped blade root and the T-shaped mounting groove 4, and the blade cannot be thrown out when the rotor 1 rotates.
As shown in fig. 3, the first pin hole 10 and the second pin hole 11 are both taper holes, and the taper is 1: 100; this makes the connection stronger as the first and second fixing pins 12 and 13 are inserted when the first and second fixing pins 12 and 13 are inserted into the first and second pin holes 10 and 11.
As shown in fig. 2 and 3, an adjusting assembly 9 is arranged on the side wall of the mounting base 3, the adjusting assembly 9 includes a balance groove 16 annularly formed on the side wall of the mounting base 3, a balance block 17 is arranged in the balance groove 16, two balance blocks 17 are arranged along the radial direction of the balance groove 16, a threaded hole is formed in a contact part of the two balance blocks 17, and an inner hexagonal bolt 18 is inserted in the threaded hole; balance weight 17 is square setting, when discovering rotor 1 periphery rotation unbalance through dynamic balance test, can be in 16 internal through hexagon socket head cap screw 18 fixed balance weight 17 of balancing tank, and arrange along rotor 1's axial has two, per two blocks of balance weight 17 are a set of, balance weight 17 is provided with a plurality of groups along 16 circumference of balancing tank, through the fixed balance weight 17 in the less one side of rotor 1 gravity, thereby adjust rotor 1's circumference gravity balance, at last screw up through hexagon socket head cap screw 18 is fixed.
As shown in fig. 2, the cross section of the balancing slot 16 is U-shaped, and two side walls of the balancing slot 16 are inclined inward toward the opening end; after embedding the balancing piece 17 in the balancing groove 16 like this, to downthehole screwing in hexagon socket head cap screw 18 of screw, hexagon socket head cap screw 18 exerts the power towards both sides to every group balancing piece 17 for the balancing piece 17 stretches into the one end of balancing groove 16 and expands outward to both sides, and forms the extrusion with the balancing groove 16 inner wall, makes the balancing piece 17 support tightly fixedly with the inner wall of balancing groove 16, thereby fixes balancing piece 17 more firmly in balancing groove 16.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. A steam turbine rotor structure characterized by: including rotor (1) and connect in forked blade (2) of rotor (1), rotor (1) lateral wall is connected with mount pad (3), annular mounting groove (4) have been seted up with rotor (1) is coaxial in mount pad (3), the joint has a plurality of middle blades (5) in mounting groove (4), locking groove (6) have radially been seted up along rotor (1) to mounting groove (4) lateral wall, wear to be equipped with end blade (7) in locking groove (6), locking groove (6) are provided with and are used for locking subassembly (8) to end blade (7), mount pad (3) lateral wall is provided with and is used for adjusting dynamic balance's adjusting part (9).
2. The steam turbine rotor structure of claim 1, wherein: locking Assembly (8) are including running through first pinhole (10) and second pinhole (11) of seting up in mount pad (3) and blade root, wear to be equipped with first fixed pin (12) and second fixed pin (13) in first pinhole (10) and second pinhole (11) respectively.
3. The steam turbine rotor structure according to claim 2, wherein: the cross section of the mounting groove (4) is arranged in a T shape, and the blade root part of the middle blade (5) is arranged in a T shape matched with the mounting groove (4).
4. The steam turbine rotor structure according to claim 2, wherein: the first pin hole (10) and the second pin hole (11) are both taper holes, and the taper is 1: 100.
5. The steam turbine rotor structure of claim 1, wherein: adjusting part (9) are including being annular seting up in balancing tank (16) of mount pad (3) lateral wall, be provided with balancing piece (17) in balancing tank (16), balancing piece (17) are followed the radial of balancing tank (16) is provided with two, and the position that two balancing pieces (17) contacted is seted up threaded hole, threaded hole wears to be equipped with hexagon socket head cap screw (18).
6. The steam turbine rotor structure according to claim 5, wherein: the section of the balance groove (16) is arranged in a U shape, and two side walls of the balance groove (16) are arranged towards the opening end in an inward inclined mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920766136.1U CN210422699U (en) | 2019-05-25 | 2019-05-25 | Steam turbine rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920766136.1U CN210422699U (en) | 2019-05-25 | 2019-05-25 | Steam turbine rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422699U true CN210422699U (en) | 2020-04-28 |
Family
ID=70372759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920766136.1U Expired - Fee Related CN210422699U (en) | 2019-05-25 | 2019-05-25 | Steam turbine rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422699U (en) |
-
2019
- 2019-05-25 CN CN201920766136.1U patent/CN210422699U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 |