CN215927479U

CN215927479U - Adjustable air flow nozzle blade of steam turbine

Info

Publication number: CN215927479U
Application number: CN202122053692.4U
Authority: CN
Inventors: 张越; 朱挺进; 郭涛
Original assignee: Huaneng International Power Co ltd Liaoning Branch
Current assignee: Huaneng International Power Co ltd Liaoning Branch
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-03-01
Anticipated expiration: 2031-08-27

Abstract

The utility model provides a nozzle blade capable of adjusting airflow of a steam turbine, which comprises an installation shaft and an installation ring, wherein the installation shaft comprises an adjusting mechanism, the surface of the installation shaft is provided with a plurality of blade assemblies, the adjusting mechanism comprises a rotating shaft, one end of the rotating shaft is provided with a reciprocating motor, the other end of the rotating shaft is provided with a first umbrella-shaped gear, the blade assemblies comprise blades, one end of each blade is provided with a connecting shaft, the other end of each blade is provided with a limiting rod, one end of each connecting shaft penetrates through the installation shaft and is provided with a second umbrella-shaped gear, the first umbrella-shaped gear is in transmission connection with the second umbrella-shaped gear, one end of each limiting rod is provided with a limiting ball, the inner wall of the installation ring is provided with a plurality of limiting bearings, and the limiting balls are movably connected with inner rings of the limiting bearings. The utility model realizes the limit protection of the blade.

Description

Adjustable air flow nozzle blade of steam turbine

Technical Field

The utility model mainly relates to the technical field of steam turbines, in particular to a nozzle blade capable of adjusting airflow of a steam turbine.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates, and simultaneously does work outwards.

For example, CN 202022883265.4's utility model, including impeller body, blade and nozzle, the fixed axle that is equipped with in the middle of impeller body's the front and back end fixed distribution has the strengthening rib, impeller body's the outside has the blade through second mounting panel fixed distribution, the polytetrafluoroethylene coating has been plated to the inside and outside of blade, impeller body's the outside is seted up and is distributed and is had the guiding gutter, the fixed lug that is equipped with in outside front and back end of blade, impeller body's outside is equipped with annular connecting pipe, annular connecting pipe's inboard has the nozzle through first mounting panel fixed distribution, the inboard of nozzle is equipped with the air outlet, and this patent is though can normal use, but the effect of regulation is relatively poor to the precision of regulation is lower, has reduced the practicality of device.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a culture bucket for algae active agents, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the nozzle blade of the adjustable air current of steam turbine, including installation axle and collar, the installation axle is including adjustment mechanism, the surface of installation axle is equipped with a plurality of blade subassembly, adjustment mechanism is including the pivot, the one end of pivot is equipped with reciprocating motor, the other end of pivot is equipped with first umbelliform gear, the blade subassembly is including the blade, the one end of blade is equipped with even axle, the other end of blade is equipped with the gag lever post, the one end of even axle runs through the installation axle and is equipped with the umbrella-shaped gear of second, first umbelliform gear is connected with the transmission of the umbrella-shaped gear of second.

Preferably, one end of the limiting rod is provided with a limiting ball, the inner wall of the mounting ring is provided with a plurality of limiting bearings, and the limiting ball is movably connected with the inner ring of each limiting bearing. In the preferred embodiment, the limiting ball and the limiting bearing can realize the limiting protection when the blade is impacted by large wind and the function of assisting the blade to rotate according to the established track of the mounting ring.

Preferably, one side of the blade is provided with a plurality of spherical protection blocks. In the preferred embodiment, the spherical protective block can protect the folded blade when the blade is touched.

Preferably, the surfaces of the mounting shaft and the mounting ring are provided with corrosion-resistant coatings. In the preferred embodiment, the corrosion-resistant coating can prevent the mounting shaft and the mounting ring from being corroded by impurities in water vapor after long-time use.

Preferably, one side of the reciprocating motor is provided with a lead, and one end of the lead is provided with a control panel. In the preferred embodiment, the control panel can control the operation of the whole device.

Preferably, the rotating shaft is movably connected with the inner wall of the mounting shaft through an auxiliary bearing. In the preferred embodiment, the auxiliary bearing can realize the limiting and protecting function on the rotating shaft.

Preferably, the surface of the connecting shaft is provided with a shaft seal. In the preferred embodiment, the shaft seal can realize the function of sealing and protecting the position where the connecting shaft penetrates through the mounting shaft.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the blades can be adjusted by the mounting shaft, the mounting ring, the adjusting mechanism, the blade assembly, the rotating shaft, the reciprocating motor, the first umbrella-shaped gear, the blades, the connecting shaft, the limiting rod and the second umbrella-shaped gear, the adjusting mode is simple and convenient, and meanwhile, the blade is better in accuracy, and the limiting protection of the blades is realized by the limiting ball and the limiting bearing.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a structural isometric view of the mounting shaft, mounting ring and vanes of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a cross-sectional view of the overall structure of the present invention;

FIG. 4 is a schematic view of region A of FIG. 3 according to the present invention;

fig. 5 is a schematic view of the region B in fig. 3 according to the present invention.

In the figure: 1. installing a shaft; 10. a corrosion-resistant coating; 2. a mounting ring; 21. a limit bearing; 3. an adjustment mechanism; 31. a rotating shaft; 311. an auxiliary bearing; 32. a first bevel gear; 4. a blade assembly; 41. a blade; 411. a spherical protective block; 42. a connecting shaft; 421. shaft sealing; 43. a second bevel gear; 44. a limiting rod; 45. a limiting ball; 5. a reciprocating motor; 51. a wire; 6. a control panel.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 1-5, a nozzle vane for a steam turbine to adjust air flow includes an installation shaft 1 and an installation ring 2, where the installation shaft 1 includes an adjusting mechanism 3, the surface of the installation shaft 1 is provided with a plurality of blade assemblies 4, the adjusting mechanism 3 includes a rotating shaft 31, one end of the rotating shaft 31 is provided with a reciprocating motor 5, the other end of the rotating shaft 31 is provided with a first umbrella-shaped gear 32, which is connected by bolts, the blade assemblies 4 include blades 41, one end of each blade 41 is provided with a connecting shaft 42, the other end of each blade 41 is provided with a limiting rod 44, one end of each connecting shaft 42 penetrates through the installation shaft 1 and is provided with a second umbrella-shaped gear 43, which is connected by bolts, the first umbrella-shaped gear 32 is in transmission connection with the second umbrella-shaped gear 43, one end of each limiting rod 44 is provided with a limiting ball 45, the inner wall of the installation ring 2 is provided with a plurality of limiting bearings 21, the limiting ball 45 is movably connected with the inner ring of the limiting bearing 21, and the limiting ball 45 and the limiting bearing 21 can realize the limiting protection when the blade 41 is impacted by large wind power and the function of assisting the blade 41 to rotate according to the established track of the mounting ring 2.

In an embodiment, referring to fig. 1, 4 and 5, a plurality of spherical protection blocks 411 are disposed on one side of the blade 41, and through the spherical protection blocks 411, a protection effect can be achieved when the blade 41 is folded and touched, corrosion-resistant coatings 10 are disposed on the surfaces of the installation shaft 1 and the installation ring 2, and through the corrosion-resistant coatings 10, a protection effect that the installation shaft 1 and the installation ring 2 are corroded by impurities in water vapor after long-time use can be achieved, a lead 51 is disposed on one side of the reciprocating motor 5 (model 24BYJ48), a control panel 6 (model TL054) is disposed at one end of the lead 51, an operation of the whole device can be controlled through the control panel 6, the rotating shaft 31 is movably connected with the inner wall of the installation shaft 1 through an auxiliary bearing 311, a limit protection effect on the rotating shaft 31 can be achieved through the auxiliary bearing 311, a shaft seal 421 is disposed on the surface of the connecting shaft 42, the shaft seal 421 can protect the connecting shaft 42 from penetrating the mounting shaft 1.

The specific operation mode of the utility model is as follows:

firstly, when the blade 41 needs to be adjusted, a user starts the reciprocating motor 5 through the control panel 6, the reciprocating motor 5 drives the rotating shaft 31, the rotating shaft 31 rotates along the auxiliary bearing 311, and simultaneously drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 43 to rotate, the connecting shaft 42 carried by the second bevel gear 43 and the blade 41 rotate, so as to adjust the rotating angle of the blade 41 and the discharge speed of the air flow, and the blade 41 rotates along the limit bearing 21 through the limit rod 44 and the limit ball 45, so that the blade 41 is protected in a limit manner to a certain extent.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. Nozzle vane of adjustable air current of steam turbine, including installation axle (1) and collar (2), its characterized in that, installation axle (1) is including adjustment mechanism (3), the surface of installation axle (1) is equipped with a plurality of blade subassembly (4), adjustment mechanism (3) are including pivot (31), the one end of pivot (31) is equipped with reciprocating motor (5), the other end of pivot (31) is equipped with first umbelliform gear (32), blade subassembly (4) are including blade (41), the one end of blade (41) is equipped with axle (42) even, the other end of blade (41) is equipped with gag lever post (44), the one end of axle (42) even runs through installation axle (1) and is equipped with second umbelliform gear (43), first umbelliform gear (32) are connected with second umbelliform gear (43) transmission.

2. The adjustable flow nozzle vane of a steam turbine according to claim 1, characterized in that one end of the limiting rod (44) is provided with a limiting ball (45), the inner wall of the mounting ring (2) is provided with a plurality of limiting bearings (21), and the limiting ball (45) is movably connected with the inner ring of the limiting bearings (21).

3. The adjustable-flow nozzle blade of a steam turbine according to claim 1, characterized in that said blade (41) is provided on one side with a plurality of spherical shielding blocks (411).

4. The adjustable-flow nozzle blade for steam turbines according to claim 1, characterized in that the surfaces of the mounting shaft (1) and the mounting ring (2) are provided with a corrosion-resistant coating (10).

5. The adjustable flow nozzle vane of a steam turbine according to claim 1, characterized in that a wire (51) is provided at one side of the reciprocating motor (5), and a control panel (6) is provided at one end of the wire (51).

6. The adjustable flow nozzle vane of a steam turbine according to claim 1, characterized in that the shaft (31) is movably connected to the inner wall of the mounting shaft (1) by means of an auxiliary bearing (311).

7. The adjustable-flow nozzle vane of a steam turbine according to claim 1, characterized in that the surface of said connecting shaft (42) is provided with a shaft seal (421).