CN211287796U - Turbine blade capable of being completely fixed - Google Patents
Turbine blade capable of being completely fixed Download PDFInfo
- Publication number
- CN211287796U CN211287796U CN201921692202.1U CN201921692202U CN211287796U CN 211287796 U CN211287796 U CN 211287796U CN 201921692202 U CN201921692202 U CN 201921692202U CN 211287796 U CN211287796 U CN 211287796U
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- blade
- mounting groove
- blade root
- axial fixing
- wedge block
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Abstract
The utility model discloses a steam turbine blade capable of being completely fixed, which comprises a mounting groove, a blade top, a blade body and a blade root, wherein the blade top is fixedly connected with the top of the blade body, the blade root is fixedly connected with the bottom of the blade body, the blade root is matched and connected with the mounting groove, the blade root comprises an external thread connecting part, an axial fixing part and a wedge block, the bottom of the blade root is provided with the axial fixing part, the blade root is provided with one half of a wedge block hole, the other half of the wedge block hole is arranged at the position corresponding to the blade root on the mounting groove, the blade root is fixedly connected with the mounting groove through the wedge block, the axis fixing part is matched and fixedly connected with an axis fixing groove, the inner wall of the mounting groove is provided with an internal thread connecting part at the position which is one third away from the top of the mounting groove, the external thread connecting, reduce the occurrence of stress concentration and prolong the service life of the blade.
Description
Technical Field
The utility model belongs to the technical field of the steam turbine technique and specifically relates to a steam turbine blade that can fix completely is related to.
Background
The steam turbine is a rotary power machine which converts the energy of steam into mechanical work, is also called as a steam turbine, is mainly used as a prime mover for power generation, can directly drive various pumps, fans, compressors, ship propellers and the like, can also meet the heat supply requirements in production and life by utilizing the exhaust steam or intermediate extraction steam of the steam turbine, and needs to be installed compactly enough when blades are installed, but the blades in the prior art cannot be completely fixed when being installed, and radial play and axial movement need to be limited in multiple directions.
SUMMERY OF THE UTILITY MODEL
The object of the utility model is to provide a steam turbine blade that can fix completely solves one or more among the above-mentioned prior art problem.
In order to solve the technical problem, the utility model adopts the technical scheme that: a turbine blade capable of being completely fixed comprises a mounting groove, a blade top, a blade body and a blade root, wherein the blade top is fixedly connected with the top of the blade body, the blade root is fixedly connected with the bottom of the blade body, the blade root is matched and connected with the mounting groove, the blade root comprises an external thread connecting part, an axial fixing part and a wedge block, the external thread connecting part is arranged at one third of the distance from the top surface of the blade root, the axial fixing part is arranged at the bottom of the blade root, one half of wedge block hole is arranged on the blade root, the other half of wedge block hole is arranged at the position, corresponding to the blade root, of the mounting groove, the blade root is fixedly connected with the mounting groove through the wedge block, the wedge block is a T-shaped wedge block, an axial fixing groove is arranged on the mounting groove, the axis fixing part is matched and fixedly connected with the axial fixing groove, and, the external thread connecting part is matched and connected with the internal thread connecting part.
In the fully fixable steam turbine blade, the axial fixing portion is a triangular projection, and the axial fixing portions are uniformly distributed at the bottom of the blade root.
In the above fully fixable steam turbine blade, the axial fixing grooves are triangular grooves, and the axial fixing grooves are uniformly distributed at the bottom of the inner wall of the mounting groove.
In the above-described fully fixable turbine blade, the axial fixing groove and the axial fixing portion 9 are at least 6 fittingly connected to each other.
The utility model has the advantages that: the utility model discloses well threaded connection makes mounting groove and the compacter being connected of blade, and the compact connection makes the power that the blade received in high-speed operation more even, reduces stress concentration's emergence, improves the life-span of blade.
Drawings
Fig. 1 is a schematic structural view of a turbine blade capable of being completely fixed according to the present invention.
Fig. 2 is a bottom view of a turbine blade of the present invention that can be fully secured.
Reference numbers in the figures: 1. the blade comprises a mounting groove 2, a blade top 3, a blade body 4, a blade root 5, an external thread connecting part 6, an axial fixing part 7, a wedge block 8, an axial fixing groove 9 and an internal thread connecting part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a turbine blade capable of being completely fixed includes a mounting groove 1, a blade tip 2, a blade body 3 and a blade root 4, the blade tip 2 is fixedly connected to the top of the blade body 3, the blade root 4 is fixedly connected to the bottom of the blade body 3, the blade root 4 is connected to the mounting groove 1 in a matching manner, the blade root 4 includes an external thread connecting portion 5, an axial fixing portion 6 and a wedge 7, the external thread connecting portion 5 is disposed at a position one third away from the top surface of the blade root 4, the axial fixing portion 6 is disposed at the bottom of the blade root 4, the axial fixing portion 6 is a triangular projection, the axis fixing portion 6 is uniformly distributed at the bottom of the blade root 4, the blade root 4 is provided with one-half wedge hole, another one-half wedge hole is disposed at a position corresponding to the blade root 4 on the mounting groove 1, the blade root 4 is fixedly connected to the mounting groove 1 through, the wedge 7 is a T-shaped wedge, the mounting groove 1 is provided with an axial fixing groove 8, the axial fixing groove 8 is a triangular groove, the axial fixing grooves 8 are uniformly distributed at the bottom of the inner wall of the mounting groove 1, the axis fixing portion 6 is fixedly connected with the axis fixing groove 8 in a matched manner, the axial connecting groove 8 is connected with the shaft connecting portion 6 in a matched manner by at least 6, the inner wall of the mounting groove 1 is provided with an internal thread connecting portion 9 at a position which is one third away from the top of the mounting groove 1, and the external thread connecting portion 5 is connected with the internal thread connecting portion 9 in a matched.
The utility model discloses in, the blade is rotatory to be installed in the mounting groove, axial mounting groove fixed connection in axial fixed part and the mounting groove of blade bottom, the blade has injectd rotation and axial removal promptly, it is downthehole with the voussoir that T shape voussoir was knocked into the blade root and the mounting groove and is left at last, the longitudinal movement of blade this moment is also restricted, the blade is fixed completely, blade mounting groove and the compacter connection of blade after the complete fixation, compact connection makes the power that the blade received in high-speed operation more even, reduce stress concentration's emergence, the life-span of improvement blade. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a turbine blade that can fix completely, includes mounting groove (1), blade top (2), blade body (3) and blade root (4), its characterized in that: the blade top (2) is fixedly connected with the top of the blade body (3), the blade root (4) is fixedly connected with the bottom of the blade body (3), the blade root (4) is connected with the mounting groove (1) in a matching manner, the blade root (4) comprises an external thread connecting part (5), an axial fixing part (6) and a wedge block (7), the external thread connecting part (5) is arranged at a position which is one third away from the top surface of the blade root (4), the axial fixing part (6) is arranged at the bottom of the blade root (4), one half of wedge block holes are formed in the blade root (4), the other half of wedge block holes are formed in the mounting groove (1) and correspond to the blade root (4), the blade root (4) is fixedly connected with the mounting groove (1) through the wedge block (7), the wedge block (7) is a T-shaped wedge block, an axial fixing groove (8) is formed in the mounting groove (1), axial fixed part (6) with axial fixed slot (8) cooperation fixed connection, mounting groove (1) inner wall distance mounting groove (1) top third department is equipped with female connection portion (9), male connection portion (5) with female connection portion (9) cooperate and are connected.
2. A fully fixable turbine blade according to claim 1 wherein: the axial fixing parts (6) are triangular bumps, and the axial fixing parts (6) are uniformly distributed at the bottoms of the blade roots (4).
3. A fully fixable turbine blade according to claim 1 wherein: the axial fixing grooves (8) are triangular grooves, and the axial fixing grooves (8) are uniformly distributed at the bottoms of the inner walls of the mounting grooves (1).
4. A fully fixable turbine blade according to claim 1 wherein: the axial fixing groove (8) is matched and connected with at least 6 axial fixing parts (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921692202.1U CN211287796U (en) | 2019-10-11 | 2019-10-11 | Turbine blade capable of being completely fixed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921692202.1U CN211287796U (en) | 2019-10-11 | 2019-10-11 | Turbine blade capable of being completely fixed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287796U true CN211287796U (en) | 2020-08-18 |
Family
ID=72035265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921692202.1U Active CN211287796U (en) | 2019-10-11 | 2019-10-11 | Turbine blade capable of being completely fixed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287796U (en) |
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2019
- 2019-10-11 CN CN201921692202.1U patent/CN211287796U/en active Active
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