CN106271378B - Movable vane piece assembly method on turbine rotor - Google Patents
Movable vane piece assembly method on turbine rotor Download PDFInfo
- Publication number
- CN106271378B CN106271378B CN201510311736.5A CN201510311736A CN106271378B CN 106271378 B CN106271378 B CN 106271378B CN 201510311736 A CN201510311736 A CN 201510311736A CN 106271378 B CN106271378 B CN 106271378B
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- Prior art keywords
- movable vane
- piece
- vane piece
- blade root
- race
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Movable vane piece assembly method on a kind of turbine rotor provided by the invention, all movable vane pieces on turbine rotor are all standard films, and the method for assembling all movable vane pieces includes：One）, in the race of impeller of steam turbine rotor wheel rim be arranged a voussoir that the blade root of first blade is positioned；Two）All movable vane pieces are navigated to one by one in the race, and are equipped with process gasket between two neighboring movable vane piece；Three）All process gaskets are substituted for distance piece, makes to plug a distance piece between the adjacent movable vane piece of whole circle movable vane piece, completes the assembly of movable vane piece.Whole circle movable vane piece in the present invention can be all using rule blade, final blage need not in addition be designed, wheel rim need not also open up mounting groove, the installation of whole circle movable vane piece can be completed by process gasket and distance piece, design cost is not only reduced, while also reducing whole circle movable vane piece and the manufacturing cost of wheel rim.
Description
Technical field
The present invention relates to the rotor fabrication techniques fields of steam turbine, more particularly to the movable vane piece on a kind of turbine rotor
Assembly method.
Background technology
Core drive device of the steam turbine as power station, is the rotary power that the energy of steam is converted into mechanical work
Machinery.It is mainly used as prime mover of power generation, can also directly drive various pumps, wind turbine, compressor and propeller for vessels etc..May be used also
To meet production and heat supply needs in life using the steam discharge of steam turbine or intermediate extraction.
In steam turbine, steam thermal energy is efficiently converted by mechanical energy by movable vane piece and rotor.Movable vane piece is installed
On impeller of rotor or rotary drum, receives the high-speed flow of nozzle blade cascade injection, the kinetic energy of steam is converted into mechanical energy, makes rotor
Rotation.
In the prior art, the assembly method for movable vane piece being installed to impeller of rotor is that the rotation of movable vane piece one by one is certain
Angle makes the blade root of movable vane piece be inserted into the race of wheel rim, after blade root is inserted into race, then movable vane piece is made to revolve
Go back to first retainer；Such installation method makes last movable vane piece in last installation, and not extra space is rotated, from
And need to open a mounting groove in an axial direction on wheel rim, so that mounting groove is communicated with race, last movable vane piece is direct by mounting groove
It is inserted into race, axially position is carried out to last movable vane piece with pin, needs to open thread groove on blade root, to which last movable vane piece also needs
It specially to design, heavy workload, the manufacturing cost that this not only designs movable vane piece are high, it is also necessary to process and install in wheel rim
Slot, to keep the manufacturing cost of wheel rim also high.
Invention content
In view of the foregoing deficiencies of prior art, the technical problem to be solved in the present invention is that providing one kind keeps whole circle dynamic
Blade shape it is identical and make wheel rim need not open up mounting groove to the low movable vane piece of manufacturing cost assembly method, with gram
Take the drawbacks described above of the prior art.
In order to solve the above technical problem, the present invention provides a kind of turbine rotor on movable vane piece assembly method, institute
All movable vane pieces stated on turbine rotor are identical, are all standard films, and the method for assembling all movable vane pieces includes：
One), it is arranged one in the race of the impeller of steam turbine rotor wheel rim to position the blade root of first movable vane piece
Voussoir；
Two), all movable vane pieces are navigated to one by one in the race, specially：First movable vane piece is rotated by a certain angle, is made
The blade root of first movable vane piece is inserted into the race, then first movable vane piece is rotated back to first retainer, makes the side of first movable vane piece blade root
It is close on the voussoir, then in the upper process gasket of the other side of first movable vane piece blade root pad；Then second piece of movable vane piece is installed, made
The side of second piece of movable vane piece blade root is close to the process gasket of the other side of the first movable vane piece blade root, and in second piece of movable vane piece
The upper process gasket of other side pad of blade root；And so on, until penultimate movable vane piece is mounted in the race, it finally will be described
Voussoir takes out from race, is further continued for the blade root of last movable vane piece being installed in race；
Three) it, after installing last movable vane piece, is inserted into and is spaced between the blade root and the blade root of last movable vane piece of first movable vane piece
Piece, the shape of the distance piece is consistent with the blade-root molded line of the movable vane piece, and the side of the distance piece is close to the head and is moved
The blade root of the last movable vane piece is close in the blade root of blade, the other side of distance piece；Then last movable vane piece is pulled out again to move with penultimate
Process gasket between blade is inserted into distance piece between last movable vane piece and penultimate movable vane piece, make the both sides of distance piece respectively with
The blade root of penultimate movable vane piece and last movable vane piece is close to, and all process gaskets are sequentially substituted for distance piece, until first movable vane piece with
Until second piece of interlobate process gasket is replaced, so far all movable vane piece assembly are completed.
Preferably, when process gasket replacement is mounted to the distance piece, the leaf of the two neighboring movable vane piece
Gap between root cannot meet the distance piece rotate by a certain angle insertion when, the distance piece is cut into two pieces along center line,
Be sequentially inserted into after rotation angle in the race, then a monoblock be combined by two pieces by spot welding, and make each distance piece with
It is adjacent between the blade root of each movable vane piece.
Preferably, it is inserted into two neighboring described dynamic still without sufficient space after the distance piece is cut into two pieces along center line
When gap between the blade root of blade, the distance piece is cut into three pieces, wherein intermediate mass is rectangular block, first that two lateral mass are straight
It patches in the race, between intermediate mass is then inserted into two lateral mass again, then intermediate mass and two lateral mass is made by sleeving and riveting technique
It links into an integrated entity.
Preferably, the step 2) in position all movable vane pieces when, the circumference of the race is divided at least three
Part, it is intended to detect the radiation of the movable vane piece after all installations after the movable vane piece positioning in the race corresponding to every part, determines it
Whether installation is correct.
Preferably, the step 3) in replace clipping room partition when, the circumference of the race is divided at least three parts,
After the process gasket in race corresponding to every part is replaced by the distance piece, it is replaced all to be intended to assay intervals piece
The radiation of movable vane piece determines whether its installation is correct.
Preferably, the process gasket is rectangular washer, and the thickness of the process gasket is less than the thickness of the distance piece.
Preferably, the thickness of the distance piece is 1mm -4mm.
As described above, the movable vane piece assembly method on the turbine rotor of the present invention, has the advantages that：
Whole circle movable vane piece can be all using rule blade, it is not necessary in addition design last movable vane piece, wheel rim need not also open up
The installation of whole circle movable vane piece can be completed by process gasket and distance piece, not only reduce design cost, simultaneously for mounting groove
Also reduce whole circle movable vane piece and the manufacturing cost of wheel rim.Furthermore, it is possible to make movable vane piece that there is certain pretwist amount, with
Ensure that movable vane piece forms whole circle formation, substantially increases the overall stiffness of movable vane piece, improve security performance.
Description of the drawings
Fig. 1 is shown as the scheme of installation of the blade root of movable vane piece and the race of wheel rim.
Component label instructions
100 movable vane pieces
110 blade roots
120 blades
130 shrouds
200 races
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It please refers to Fig.1.It should be noted that the diagram provided in the present embodiment only illustrates the present invention's in a schematic way
Basic conception, component count, shape when only display is with related component in the present invention rather than according to actual implementation in schema then
And size is drawn, when actual implementation kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout
Kenel may also be increasingly complex.
Movable vane piece assembly method on a kind of turbine rotor provided by the invention, all movable vane pieces on turbine rotor
Molded line thickness it is identical, as shown in Figure 1 for movable vane piece installation after schematic diagram, wherein movable vane piece 100 include blade 120 and blade root
110, with the race 200 for being inserted into the blade root 110 of movable vane piece on wheel rim, being additionally provided on the top of blade 120 will be all
The shroud 130 that movable vane piece is connected.Wherein, the method for assembling all movable vane pieces includes：
One), it is arranged one in the race 200 of impeller of steam turbine rotor wheel rim to determine the blade root 110 of first movable vane piece
The voussoir of position；
Two), all movable vane pieces are navigated to one by one in race 200, specially：First movable vane piece is rotated by a certain angle, is made
The blade root of first movable vane piece is inserted into race 200, then first movable vane piece is rotated back to first retainer, and the side of first movable vane piece blade root is made to lean on
Tightly on voussoir, then in the upper process gasket of the other side of first movable vane piece blade root pad；Then second piece of movable vane piece is installed, make second piece
The side of movable vane piece blade root is close to the process gasket of the other side of first movable vane piece blade root, and in the another of second piece of movable vane piece blade root
The upper process gasket of side pad；And so on, until penultimate movable vane piece is mounted in race 200, last movable vane piece is finally installed, by institute
It states voussoir to take out from race 200, is further continued for rotating by a certain angle last movable vane piece, the blade root of last movable vane piece is made to be inserted into race
In 200, then last movable vane piece rotated back into first retainer, the blade root of last movable vane piece is installed when space not enough in race
When, can last movable vane piece be subjected to rounding and cutting；
Three) it, after installing last movable vane piece, is inserted into and is spaced between the blade root and the blade root of last movable vane piece of first movable vane piece
Piece, the shape of distance piece is consistent with the blade-root molded line of movable vane piece, and the blade root of first movable vane piece, distance piece are close in the side of distance piece
The other side be close to the blade root of last movable vane piece；Then the process gasket between last movable vane piece and penultimate movable vane piece is pulled out again,
Be inserted into distance piece between last movable vane piece and penultimate movable vane piece, make the both sides of distance piece respectively with penultimate movable vane piece and last movable vane piece
Blade root is close to, and all process gaskets are sequentially substituted for distance piece, until first movable vane piece and second piece of interlobate process gasket
Until being replaced, so far all movable vane piece assembly are completed.
The molded line thickness of all movable vane pieces is identical in the present invention, then whole circle movable vane piece can be all using rule blade, it is not necessary to
In addition last movable vane piece is designed, wheel rim need not also open up mounting groove, whole circle can be completed by process gasket and distance piece
The installation of movable vane piece not only reduces design cost, while also reducing whole circle movable vane piece and the manufacturing cost of wheel rim.
Furthermore, it is possible to make movable vane piece that there is certain pretwist amount to substantially increase movable vane piece to ensure that movable vane piece forms whole circle formation
Overall stiffness, improve security performance.
The present invention by process gasket when being substituted for distance piece, the replacement of process gasket sequence and step 2) in craftwork pad
The erection sequence of piece on the contrary, even position each movable vane piece successively in the direction of the clock in step 2, then step 3) in by counterclockwise
Each process gasket is replaced successively in direction.
For process gasket is preferably substituted for distance piece, above-mentioned steps three) in, it is mounted to by the replacement of each process gasket
When distance piece, if the gap between the blade root of two neighboring movable vane piece cannot meet distance piece rotate by a certain angle insertion when, will
Distance piece is cut into two pieces along center line, is sequentially inserted into race after rotation angle, then is combined into a monoblock by two pieces by spot welding, and
Make to be adjacent between each distance piece and the blade root of each movable vane piece.And it is inserted still without sufficient space after distance piece is cut into two pieces along center line
When entering into gap between the blade root of two neighboring movable vane piece, distance piece is cut into three pieces, wherein intermediate mass is rectangular block, first
Two lateral mass are inserted directly into race, then again by intermediate mass be inserted into two lateral mass between, then by sleeving and riveting technique make intermediate mass and
Two lateral mass link into an integrated entity.
For improve it is whole circle movable vane piece installation accuracy, above-mentioned steps two) in position all movable vane pieces when, by the circumference of race
At least three arc length are divided into, are intended to detect after the positioning of movable vane piece in the race corresponding to each arc length dynamic after all installations
Whether the radiation of blade is consistent.The circumference of race can be such as divided into three parts, i.e. every part of radian is 120 °, installs one
When race corresponding to a 120 °, i.e., primary radiation detection is carried out to the movable vane piece after all installations, whether determines its installation
Correctly.Equally, when replacing clipping room partition in step 3, the circumference of race is also divided at least three arc length, each arc
After process gasket in long corresponding race is replaced by distance piece, it is intended to the spoke of the replaced all movable vane pieces of assay intervals piece
Ray determines whether its installation is correct.The thickness of the above-mentioned generally rectangular cross-section gasket of process gasket, process gasket is less than distance piece
Thickness.The thickness of distance piece is 1mm -4mm.
In conclusion the movable vane piece assembly method on the turbine rotor of the present invention, movable vane piece can be all using standard
Blade, it is not necessary in addition design last movable vane piece, wheel rim need not also open up mounting groove, pass through process gasket and distance piece
The installation for completing whole circle movable vane piece, not only reduces design cost, while also reducing whole circle movable vane piece and wheel rim
Design and manufacturing cost.Furthermore, it is possible to make movable vane piece that there is certain pretwist amount, to ensure that movable vane piece forms whole circle formation,
The overall stiffness for substantially increasing movable vane piece, improves security performance.So the present invention effectively overcome it is in the prior art
Various shortcoming and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. the movable vane piece assembly method on a kind of turbine rotor, which is characterized in that all movable vanes on the turbine rotor
Piece is identical, is all standard film, and the method for assembling all movable vane pieces includes：
One), a wedge positioned to the blade root of first movable vane piece is set in the race of the impeller of steam turbine rotor wheel rim
Block；
Two), all movable vane pieces are navigated to one by one in the race, specially：First movable vane piece is rotated by a certain angle, is made first dynamic
The blade root of blade is inserted into the race, then first movable vane piece is rotated back to first retainer, and the side of first movable vane piece blade root is made to be close to
On the voussoir, then in the upper process gasket of the other side of first movable vane piece blade root pad；Then second piece of movable vane piece is installed, make second
The side of block movable vane piece blade root is close to the process gasket of the other side of the first movable vane piece blade root, and in second piece of movable vane piece blade root
The upper process gasket of other side pad；And so on, until penultimate movable vane piece is mounted in the race, finally by the voussoir
It is taken out from race, is further continued for the blade root of last movable vane piece being installed in race；
Three), after installing last movable vane piece, it is inserted into distance piece between the blade root and the blade root of last movable vane piece of first movable vane piece, institute
The shape for stating distance piece is consistent with the blade-root molded line of the movable vane piece, and the first movable vane piece is close in the side of the distance piece
The blade root of the last movable vane piece is close in blade root, the other side of distance piece；Then pull out again last movable vane piece and penultimate movable vane piece it
Between process gasket, be inserted into distance piece between last movable vane piece and penultimate movable vane piece, make the both sides of distance piece respectively with it is penultimate dynamic
The blade root of blade and last movable vane piece is close to, and all process gaskets are sequentially substituted for distance piece, until first movable vane piece and described the
Until two pieces of interlobate process gaskets are replaced, so far all movable vane piece assembly are completed.
2. the movable vane piece assembly method on turbine rotor according to claim 1, it is characterised in that：By the technique
When gasket replacement is mounted to the distance piece, the gap between the blade root of the two neighboring movable vane piece cannot meet the interval
Piece rotate by a certain angle insertion when, the distance piece is cut into two pieces along center line, is sequentially inserted into after rotation angle in the race,
A monoblock is combined by two pieces by spot welding again, and makes to be adjacent between each distance piece and the blade root of each movable vane piece.
3. the movable vane piece assembly method on turbine rotor according to claim 2, it is characterised in that：When the distance piece
It is cut into after two pieces along center line when be inserted into still without sufficient space into gap between the blade root of the two neighboring movable vane piece, by institute
State distance piece and be cut into three pieces, wherein intermediate mass is rectangular block, and two lateral mass are inserted directly into the race first, then again will in
Between block be inserted between two lateral mass, then so that intermediate mass and two lateral mass is linked into an integrated entity by sleeving and riveting technique.
4. the movable vane piece assembly method on turbine rotor according to claim 1, it is characterised in that：The step 2)
When middle positioning all movable vane pieces, the circumference of the race is divided at least three parts, it is dynamic in the race corresponding to every part
It is intended to detect the radiation of the movable vane piece after all installations after blade positioning, determines whether its installation is correct.
5. the movable vane piece assembly method on turbine rotor according to claim 1, it is characterised in that：The step 3)
When middle replacement clipping room partition, the circumference of the race is divided at least three parts, the work in the race corresponding to every part
After skill gasket is replaced by the distance piece, it is intended to the radiation of the replaced all movable vane pieces of assay intervals piece, determines its installation
It is whether correct.
6. the movable vane piece assembly method on turbine rotor according to claim 1, it is characterised in that：The process gasket
For rectangular washer, the thickness of the process gasket is less than the thickness of the distance piece.
7. the movable vane piece assembly method on turbine rotor according to claim 1, it is characterised in that：The distance piece
Thickness is 1mm -4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311736.5A CN106271378B (en) | 2015-06-09 | 2015-06-09 | Movable vane piece assembly method on turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311736.5A CN106271378B (en) | 2015-06-09 | 2015-06-09 | Movable vane piece assembly method on turbine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271378A CN106271378A (en) | 2017-01-04 |
| CN106271378B true CN106271378B (en) | 2018-08-21 |
Family
ID=57658717
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510311736.5A Active CN106271378B (en) | 2015-06-09 | 2015-06-09 | Movable vane piece assembly method on turbine rotor |
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| CN (1) | CN106271378B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895030A (en) * | 2018-08-06 | 2018-11-27 | 无锡市海星船舶动力有限公司 | The compressor impeller of blade detachable type |
| CN109779695A (en) * | 2019-02-01 | 2019-05-21 | 哈尔滨汽轮机厂有限责任公司 | A kind of assembly method for the small enthalpy drop blade of steam turbine |
| CN109931112A (en) * | 2019-04-28 | 2019-06-25 | 杭州汽轮机股份有限公司 | A kind of free blade construction of steam turbine and its assembly method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772854A (en) * | 1951-02-27 | 1956-12-04 | Rateau Soc | Vibration damping means for bladings of turbo-machines |
| US3545882A (en) * | 1968-01-17 | 1970-12-08 | Rolls Royce | Pressure exchanger rotor |
| CN1529788A (en) * | 2002-06-07 | 2004-09-15 | 三菱重工业株式会社 | Turbine bucket assembly and its assembling method |
| CN101517200A (en) * | 2006-09-25 | 2009-08-26 | 西门子公司 | Turbine rotor with locking plates and corresponding assembly method |
-
2015
- 2015-06-09 CN CN201510311736.5A patent/CN106271378B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772854A (en) * | 1951-02-27 | 1956-12-04 | Rateau Soc | Vibration damping means for bladings of turbo-machines |
| US3545882A (en) * | 1968-01-17 | 1970-12-08 | Rolls Royce | Pressure exchanger rotor |
| CN1529788A (en) * | 2002-06-07 | 2004-09-15 | 三菱重工业株式会社 | Turbine bucket assembly and its assembling method |
| CN101517200A (en) * | 2006-09-25 | 2009-08-26 | 西门子公司 | Turbine rotor with locking plates and corresponding assembly method |
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| Publication number | Publication date |
|---|---|
| CN106271378A (en) | 2017-01-04 |
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