CN210637116U - High-efficient rotary drum level moving blade of industrial steam turbine - Google Patents
High-efficient rotary drum level moving blade of industrial steam turbine Download PDFInfo
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- CN210637116U CN210637116U CN201921008549.XU CN201921008549U CN210637116U CN 210637116 U CN210637116 U CN 210637116U CN 201921008549 U CN201921008549 U CN 201921008549U CN 210637116 U CN210637116 U CN 210637116U
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Abstract
The utility model discloses a high-efficient rotary drum level moving blade of industrial steam turbine, which comprises a main shaft, a plurality of circular slots of densely covered are seted up to circumference on the main shaft, be connected with the blade root through guiding mechanism in the circular slot, the one end that the main shaft was kept away from to the blade root is connected with the blade body, the one end that the blade root was kept away from to the blade body is connected with the shroud ring. The utility model provides a turbine blade can make the adaptability change according to the particular case of high temperature high pressure steam, and the practicality is stronger, and the blade body has adopted comparatively crude stress surface design to make the energy conversion efficiency of equipment uprise in addition, more energy saving and consumption reduction.
Description
Technical Field
The utility model relates to a steam turbine technical field especially relates to a high-efficient rotary drum level moving blade of industrial steam turbine.
Background
A steam turbine is an external combustion rotary machine that can convert steam heat energy into mechanical work. After steam from a boiler enters a steam turbine, the steam passes through a series of annularly arranged nozzles and movable blades in sequence, and heat energy of the steam is converted into mechanical energy for rotating a main shaft of the steam turbine. The steam is converted in different ways in the steam turbine, thus forming the steam turbine with different working principles. A steam turbine usually operates under high temperature, high pressure and high rotation speed conditions, and is a relatively precise heavy machine, and generally, the steam turbine must be coordinated and matched with a boiler (or other steam generator), a generator (or other driven machine), a condenser, a heater, a pump, and the like to form a complete set of equipment. The development of a large-scale steam turbine unit is an important direction for the future development of a steam turbine, and the development of a longer last-stage blade is a key for further developing the large-scale steam turbine; research on improving the heat efficiency is another direction of development of the steam turbine, a peak shaving unit is developed by adopting higher steam parameters and secondary reheating, and the important trend of the development is to popularize the application of the heat supply steam turbine. As the metallurgical technology is continuously developed, the structure of the steam turbine is greatly improved. The large unit generally adopts a double-layer structure of a high-medium pressure cylinder, a high-medium pressure main shaft adopts a main shaft structure, high, medium and low pressure main shafts all adopt a block forging structure, and the bearing adopts a tilting pad structure more. Large capacity, high parameter units are being developed and designed in various countries, such as the 2000MW steam turbine being developed in russia. A new alloy material is being developed in japan to make it possible to integrate the high, medium and low pressure main shafts.
However, once the existing turbine blade is installed and fixed, the inclination angle of the stress surface of the blade body of the existing turbine blade cannot be adjusted, and the blade cannot be adaptively changed according to the specific situation of high-temperature and high-pressure steam, so that certain limitation exists.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the current turbine blade cannot adjust the inclination angle of the stress surface of the blade body of the current turbine blade once being installed and fixed, cannot be adaptively changed according to the specific condition of high-temperature and high-pressure steam, has certain limitation, and further provides the high-efficiency drum-level moving blade of the industrial turbine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a high-efficient rotary drum level moving blade of industrial steam turbine, includes the main shaft, a plurality of circular slots of densely covered are seted up to circumference on the main shaft, be connected with the blade root through guiding mechanism in the circular slot, the one end that the main shaft was kept away from to the blade root is connected with the blade body, the one end that the blade root was kept away from to the blade body is connected with the shroud.
Preferably, the adjusting mechanism comprises a mounting disc arranged in the circular groove, a U-shaped mounting seat is fixedly mounted on one side, far away from the main shaft, of the mounting disc, the blade root is mounted on the U-shaped mounting seat through a positioning pin, two through holes are symmetrically formed in the mounting disc, bolts are inserted into the through holes, and a plurality of screw holes matched with the bolts are circumferentially formed in the inner bottom of the circular groove.
Preferably, the bolt is a hexagon socket head cap screw.
Preferably, the blade body is of a uniform-section blade shape, and the stress surface of the blade body is made into a rough stress surface like ground glass.
Preferably, the blade body and the shroud band are integrally formed.
The utility model has the advantages that: 1. the mounting disc is rotated to drive the blade root to generate angle deflection, so that the angle of the stress surface of the blade body can also generate corresponding deflection, and then the proper deflection of the angle of the stress surface of the blade body can be realized by installing two bolts in the two through holes in a matching way with different screw holes in the circular groove, so that the turbine blade can be adaptively changed according to the specific condition of high-temperature and high-pressure steam, and the practicability is stronger;
2. the blade body adopts a rough stress surface design, the friction coefficient of the blade body on the working surface is increased, the stress area of the blade at the working section is increased, the impact force of high-pressure and high-temperature steam on the blade is increased invisibly, and the energy conversion efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a high-efficiency drum-stage moving blade of an industrial steam turbine according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is the schematic diagram of the arrangement of the inner screw hole of the middle circular groove and the through hole on the mounting plate.
In the figure: the novel blade comprises a main shaft 1, a blade root 2, a blade body 3, a shroud band 4, a U-shaped mounting seat 5, a positioning pin 6, a mounting disc 7, a circular groove 8, a screw hole 9, a bolt 10 and a through hole 11.
Detailed Description
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-3, an efficient rotary drum stage moving blade of an industrial steam turbine comprises a main shaft 1, wherein a plurality of densely distributed circular grooves 8 are circumferentially formed in the main shaft 1, blade roots 2 are connected to the circular grooves 8 through adjusting mechanisms, one ends, far away from the main shaft 1, of the blade roots 2 are connected with blade bodies 3, and one ends, far away from the blade roots 2, of the blade bodies 3 are connected with shrouds 4.
The adjusting mechanism comprises a mounting disc 7 arranged in a circular groove 8, a U-shaped mounting seat 5 is fixedly mounted on one side, away from the main shaft 1, of the mounting disc 7, a blade root 2 is mounted on the U-shaped mounting seat 5 through a positioning pin 6, two through holes 11 are symmetrically formed in the mounting disc 7, bolts 10 are inserted into the two through holes 11, and a plurality of screw holes 9 matched with the bolts 10 are circumferentially formed in the inner bottom of the circular groove 8.
The bolt 10 is an inner hexagon bolt, and the inner hexagon bolt has the advantages of convenience in fastening and dismounting, difficulty in sliding angle and the like.
The blade body 3 is of an equal-section blade shape, and the stress surface of the blade body 3 is made into a rough stress surface like ground glass.
The blade body 3 and the shroud band 4 are integrally formed.
The utility model provides an among the high-efficient rotary drum level moving blade of industrial steam turbine, rotating mounting disc 7 drives blade root 2 and takes place the angle incline, corresponding incline also can take place for the stress surface angle of blade body 3 like this, later through with two bolts 10 in two through-holes 11 and the circular slot 8 in the cooperation installation between the different screws 9, can realize the angle suitable incline to blade body 3 stress surface, the turbine blade can make the adaptability change according to the particular case of high temperature high pressure steam like this, the practicality is stronger.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (5)
1. The utility model provides an efficient rotary drum stage moving blade of industrial steam turbine, includes main shaft (1), its characterized in that, a plurality of circular slots (8) of densely covered are seted up to circumference on main shaft (1), be connected with blade root (2) through guiding mechanism in circular slot (8), the one end that main shaft (1) were kept away from in blade root (2) is connected with blade body (3), the one end that blade root (2) were kept away from in blade body (3) is connected with shroud (4).
2. The high-efficiency rotary drum stage moving blade of an industrial steam turbine is characterized in that the adjusting mechanism comprises a mounting disc (7) arranged in a circular groove (8), a U-shaped mounting seat (5) is fixedly mounted on one side, away from a main shaft (1), of the mounting disc (7), a blade root (2) is mounted on the U-shaped mounting seat (5) through a positioning pin (6), two through holes (11) are symmetrically formed in the mounting disc (7), a bolt (10) is inserted into each of the two through holes (11), and a plurality of screw holes (9) matched with the bolts (10) are circumferentially formed in the inner bottom of the circular groove (8).
3. The industrial steam turbine high efficiency drum stage moving blade according to claim 2, wherein the bolt (10) is a hexagon socket head cap screw.
4. The high-efficiency drum stage moving blade of an industrial steam turbine according to claim 1, characterized in that the blade body (3) is a blade profile with a constant section, and the stress surface of the blade body (3) is made into a rough stress surface like frosted glass.
5. The high-efficiency drum stage moving blade of an industrial steam turbine according to claim 1, characterized in that the blade body (3) and the shroud (4) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008549.XU CN210637116U (en) | 2019-07-01 | 2019-07-01 | High-efficient rotary drum level moving blade of industrial steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008549.XU CN210637116U (en) | 2019-07-01 | 2019-07-01 | High-efficient rotary drum level moving blade of industrial steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210637116U true CN210637116U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921008549.XU Active CN210637116U (en) | 2019-07-01 | 2019-07-01 | High-efficient rotary drum level moving blade of industrial steam turbine |
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| Country | Link |
|---|---|
| CN (1) | CN210637116U (en) |
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2019
- 2019-07-01 CN CN201921008549.XU patent/CN210637116U/en active Active
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