CN218093151U - Blade assembly and turbine power generation device - Google Patents
Blade assembly and turbine power generation device Download PDFInfo
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- CN218093151U CN218093151U CN202222636500.7U CN202222636500U CN218093151U CN 218093151 U CN218093151 U CN 218093151U CN 202222636500 U CN202222636500 U CN 202222636500U CN 218093151 U CN218093151 U CN 218093151U
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Abstract
The application relates to the technical field of axial-flow type blade rotation, in particular to a blade assembly and a turbine generating device. The blade assembly comprises a first-stage stationary blade and a first-stage moving blade; the first-stage stationary blade outlet structure angle and the first-stage moving blade inlet structure angle are arranged in a matching mode; the chord length of the blade tip section of the first-stage stationary blade, the chord length of the blade middle section of the first-stage stationary blade and the chord length of the blade root section of the first-stage stationary blade are gradually decreased; the chord length of the first-stage moving blade tip section is smaller than the chord length of the first-stage moving blade root section. Through configuration of blade profile geometric parameters, chord lengths of all sections of the blades are optimized, the number of the blades is effectively reduced, a turning angle is increased, the efficiency of the whole unit is improved, and meanwhile the durability of the blade assembly is enhanced.
Description
Technical Field
The application relates to the technical field of axial-flow type blade rotation, in particular to a blade assembly and a turbine generating device.
Background
A Top Gas Pressure Recovery Turbine (TRT) power generation device for a blast furnace, which is a device that uses heat energy and Pressure energy of blast furnace Gas, and applies work through a Turbine. The device mainly comprises a main shaft, a stationary blade inner shell, a machine shell, an air inlet and exhaust guide basin, a movable blade, a stationary blade, a movable blade assembly, an adjusting mechanism and the like. The dynamic and static blades are the most central components of the whole set of unit, the design quality directly determines the unit efficiency, and meanwhile, the stability and the service life of the unit are greatly influenced.
The inventor of the application finds that the conventional movable and stationary blades are generally thin, have lower blade turning angles and low single-stage expansion ratio in research, and cannot meet the current industrial requirements.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides a blade assembly and a turbine power generation device for solving the above-mentioned problems existing in the prior art.
According to one aspect of the present application, there is provided a blade assembly comprising: the first-stage static blades and the first-stage moving blades are oppositely arranged; the first-stage stationary blade outlet structural angle and the first-stage moving blade inlet structural angle are arranged in a matched mode; the outlet structure angle of the blade tip section of the first-stage stationary blade, the outlet structure angle of the blade middle section of the first-stage stationary blade and the outlet structure angle of the blade root section of the first-stage stationary blade are sequentially increased in an increasing manner; the inlet structure angle of the tip section of the first-stage moving blade, the inlet structure angle of the inner section of the first-stage moving blade and the inlet structure angle of the root section of the first-stage moving blade are gradually decreased; the chord length of the blade tip section of the first-stage stationary blade, the chord length of the blade section of the first-stage stationary blade and the chord length of the blade root section of the first-stage stationary blade are sequentially decreased; the chord length of the first-stage moving blade tip section is smaller than the chord length of the first-stage moving blade root section.
According to the mechanical design principle of the impeller, the geometric characteristics of the first-stage stationary blades and the first-stage moving blades are designed in a matching mode, the chord lengths of the first-stage stationary blades and the first-stage moving blades are increased, the thickness of the blades is improved, the turning angle of the blades is increased, the expansion ratio of a single machine is increased, the efficiency of the whole unit is improved, and meanwhile the service life of the blades is prolonged.
In an optional mode, the outlet structure angle of the blade tip section of the first-stage stationary blade is-75 degrees to-65 degrees, the outlet structure angle of the blade tip section of the first-stage stationary blade is-74 degrees to-64 degrees, and the outlet structure angle of the blade root section of the first-stage stationary blade is-73 degrees to-63 degrees; the inlet structure angle of the blade tip section of the first-stage moving blade is 4-14 degrees, the inlet structure angle of the blade tip section of the first-stage moving blade is-29 degrees to-19 degrees, and the inlet structure angle of the blade root section of the first-stage moving blade is-49 degrees to-39 degrees; the chord length of the blade tip section of the first-stage stationary blade is 210-270 mm, the chord length of the blade tip section of the first-stage stationary blade is 170-230 mm, and the chord length of the blade root section of the first-stage stationary blade is 130-190 mm; the chord length of the blade tip section of the first-stage moving blade is 205-265 mm, the chord length of the blade tip section of the first-stage moving blade is 190-250 mm, and the chord length of the blade root section of the first-stage moving blade is 210-270 mm.
In an alternative mode, the leading edge radius of the blade tip section of the first-stage stationary blade, the leading edge radius of the blade leaf section of the first-stage stationary blade and the leading edge radius of the blade root section of the first-stage stationary blade are equal and are 4-8mm, and the leading edge radius of each section may have a deviation of +/-2 mm in actual production; the trailing edge radius of the blade tip section of the first-stage stationary blade, the trailing edge radius of the blade leaf section of the first-stage stationary blade and the trailing edge radius of the blade root section of the first-stage stationary blade are equal and are 1-3 mm, and the leading edge radius of each section may have +/-2 mm deviation in actual production; the inlet structure angle of the blade tip section of the first-stage stationary blade, the inlet structure angle of the blade middle section of the first-stage stationary blade and the inlet structure angle of the blade root section of the first-stage stationary blade are equal and range from-11 degrees to-1 degrees, and the inlet airflow angle of each section possibly has a deviation of +/-2.5 degrees in actual production.
In an alternative mode, the erection angle of the primary stationary blade tip section, the erection angle of the primary stationary blade leaf section and the erection angle of the primary stationary blade root section are increased in sequence; the mounting angle of the blade tip section of the first-stage stationary blade is 36-41 degrees, the mounting angle of the blade tip section of the first-stage stationary blade is 38.5-43.5 degrees, and the mounting angle of the blade root section of the first-stage stationary blade is 41-46 degrees.
In an alternative mode, the leading edge radius of the tip section of the first-stage moving blade, the leading edge radius of the middle section of the first-stage moving blade and the leading edge radius of the middle section of the first-stage moving blade root are sequentially increased; the radius of the front edge of the blade tip section of the first-stage moving blade is 1-5 mm, the radius of the front edge of the blade tip section of the first-stage moving blade is 2-6 mm, and the radius of the front edge of the blade root section of the first-stage moving blade is 5-12 mm; the trailing edge radius of the tip section of the first-stage moving blade, the trailing edge radius of the inner section of the first-stage moving blade and the trailing edge radius of the root section of the first-stage moving blade are sequentially increased; the radius of the tail edge of the blade tip section of the first-stage moving blade is 0.5-3 mm, the radius of the tail edge of the blade tip section of the first-stage moving blade is 1-3.5 mm, and the radius of the tail edge of the blade root section of the first-stage moving blade is 1.5-4 mm; the mounting angle of the tip section of the first-stage moving blade, the mounting angle of the inner section of the first-stage moving blade and the mounting angle of the root section of the first-stage moving blade are sequentially increased; the installation angle of the blade tip section of the first-stage moving blade is 22-32 degrees, the installation angle of the blade tip section of the first-stage moving blade is 45-55 degrees, and the installation angle of the blade root section of the first-stage moving blade is 73-83 degrees; the outlet structure angle of the tip section of the first-stage moving blade, the outlet structure angle of the inner section of the first-stage moving blade and the outlet structure angle of the root section of the first-stage moving blade are gradually decreased; the outlet structure angle of the tip section of the first-stage moving blade is 71-87 degrees, the outlet structure angle of the middle section of the first-stage moving blade is 61-71 degrees, and the outlet structure angle of the root section of the first-stage moving blade is 59-69 degrees.
In an alternative mode, the blade assembly further comprises a second-stage stationary blade and a second-stage moving blade, and the second-stage stationary blade and the second-stage moving blade are oppositely arranged; the outlet structure angle of the second-stage stationary blade and the inlet structure angle of the second-stage moving blade are arranged in a matched mode; the outlet structure angle of the blade tip section of the second-stage stationary blade, the outlet structure angle of the blade root section of the second-stage stationary blade and the outlet structure angle of the blade root section of the second-stage stationary blade are sequentially increased in an increasing manner; the outlet structure angle of the blade tip section of the secondary stationary blade is-70 degrees to-80 degrees, the outlet structure angle of the blade tip section of the secondary stationary blade is-63 degrees to-73 degrees, and the outlet structure angle of the blade root section of the secondary stationary blade is-60 degrees to-70 degrees; the inlet structure angle of the blade tip section of the second-stage moving blade, the inlet structure angle of the blade tip section of the second-stage moving blade and the inlet structure angle of the blade root section of the second-stage moving blade are gradually decreased; the inlet structure angle of the blade tip section of the secondary moving blade is 28-38 degrees, the inlet structure angle of the blade tip section of the secondary moving blade is-24 degrees to-14 degrees, and the inlet structure angle of the blade root section of the secondary moving blade is-50 degrees to-40 degrees; the chord length of the blade tip section of the second-stage stationary blade, the chord length of the blade inner section of the second-stage stationary blade and the chord length of the blade root section of the second-stage stationary blade are sequentially decreased; the chord length of the blade tip section of the second-stage stationary blade is 175-235 mm, and the chord length of the blade tip section of the second-stage stationary blade is 130-190 mm; the chord length of the blade root section of the second-stage stationary blade is 90-150 mm; the chord length of the blade tip section of the second-stage moving blade, the chord length of the blade middle section of the second-stage moving blade and the chord length of the blade root section of the second-stage moving blade are gradually reduced; the chord length of the blade tip section of the secondary moving blade is 210-270 mm, and the chord length of the blade tip section of the secondary moving blade is 205-265 mm; the chord length of the blade root section of the second-stage moving blade is 190-250 mm.
In an optional mode, the leading edge radius of the blade tip section of the secondary stationary blade, the leading edge radius of the blade inner section of the secondary stationary blade and the leading edge radius of the blade root section of the secondary stationary blade are equal and are 4-8mm, and the leading edge radius of each section may have a deviation of +/-2 mm in actual production; the trailing edge radius of the blade tip section of the secondary stationary blade, the trailing edge radius of the blade section of the secondary stationary blade and the trailing edge radius of the blade root section of the secondary stationary blade are equal and are 1-3 mm, and the trailing edge radius of each section may have +/-2 mm deviation in actual production; the outlet structure angle of the first-stage moving blade is matched with the inlet structure angle of the second-stage stationary blade; the inlet structure angle of the blade tip section of the second-stage stationary blade, the inlet structure angle of the blade section of the second-stage stationary blade and the inlet structure angle of the blade root section of the second-stage stationary blade are sequentially increased in an increasing manner; the inlet structure angle of the blade tip section of the second-stage stationary blade is-15 degrees to-5 degrees, the inlet structure angle of the blade tip section of the second-stage stationary blade is 0 degree to 10 degrees, and the inlet structure angle of the blade root section of the second-stage stationary blade is 16 degrees to 26 degrees.
In an alternative mode, the installation angle of the blade tip section of the secondary stationary blade, the installation angle of the blade root section of the secondary stationary blade and the installation angle of the blade root section of the secondary stationary blade are increased in sequence; the mounting angle of the blade tip section of the second-stage stationary blade is 32-42 degrees, the mounting angle of the blade tip section of the second-stage stationary blade is 36-46 degrees, and the mounting angle of the blade root section of the second-stage stationary blade is 42-52 degrees.
In an alternative mode, the leading edge radius of the secondary moving blade tip section, the leading edge radius of the secondary moving blade bucket section and the leading edge radius of the secondary moving blade root section are sequentially increased; the radius of the front edge of the blade tip section of the secondary moving blade is 1-5 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 2-7 mm; the radius of the front edge of the blade root section of the second-stage moving blade is 6-15 mm; the radius of the trailing edge of the blade tip section of the second-stage moving blade, the radius of the trailing edge of the blade tip section of the second-stage moving blade and the radius of the trailing edge of the blade root section of the second-stage moving blade are sequentially increased; the radius of the front edge of the blade tip section of the secondary moving blade is 0.5-3 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 1.5-4 mm; the radius of the front edge of the blade root section of the second-stage moving blade is 2-6 mm; the mounting angles of the blade tip sections of the secondary moving blades, the mounting angles of the blade leaf sections of the secondary moving blades and the mounting angles of the blade root sections of the secondary moving blades are sequentially increased; the mounting angle of the blade tip section of the secondary moving blade is 15-25 degrees, and the mounting angle of the blade tip section of the secondary moving blade is 41-51 degrees; the installation angle of the blade root section of the second-stage moving blade is 60-85 degrees; the outlet structure angle of the blade tip section of the second-stage moving blade, the outlet structure angle of the blade tip section of the second-stage moving blade and the outlet structure angle of the blade root section of the second-stage moving blade are gradually decreased; the outlet structure angle of the blade tip section of the secondary moving blade is 70-85 degrees, and the outlet structure angle of the blade tip section of the secondary moving blade is 62-72 degrees; and the outlet structure angle of the blade root section of the second-stage moving blade is 53-63 degrees.
According to another aspect of the present application, there is provided a turbine power plant comprising a blade assembly according to any one of the above; the number of the first-stage stationary blades on the turbine power generation device is 20-30; the number of the first-stage moving blades on the turbine power generation device is 20-25.
This application is through optimizing the design of blade subassembly, increases the chord length of each cross-section of each blade, effectively reduces blade quantity, just so can use bigger blade thickness when the design, has improved the anti wear-resistant ability of blade. In addition, by increasing the chord length of each section of the blade, a single-stage blade can adopt a larger turning angle, the expansion ratio of the single-stage blade is improved, and the working capacity of the blade is improved; meanwhile, by increasing the chord length of each section of each blade, the load distribution of each stage of blade along the meridian plane can be more uniform, and the efficiency of the unit can be improved.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 illustrates a side view of a blade assembly provided by an embodiment of the present application;
FIG. 2 illustrates a top view of a blade assembly provided by embodiments of the present application;
FIG. 3 illustrates a schematic positional relationship of a cross-section of a first stage stationary blade of a blade assembly provided by an embodiment of the present application;
FIG. 4 illustrates a structural schematic diagram of a first stage stationary vane tip section of a vane assembly provided by an embodiment of the present application;
FIG. 5 is a schematic sectional view of a first stage moving blade of a blade assembly according to an embodiment of the present disclosure;
FIG. 6 illustrates a structural schematic view of a first stage moving blade tip section of a blade assembly provided by an embodiment of the present application;
FIG. 7 illustrates a characteristic line schematic using hydrodynamic calculations of a blade assembly provided by an embodiment of the present application.
The reference numbers in the detailed description are as follows:
100. a first stage stationary blade; 110. the blade tip section of the first-stage stationary blade; 111. the front edge of the blade tip section of the first-stage stationary blade; 112. the tail edge of the blade tip section of the first-stage stationary blade; 120. a first stage stationary blade lobe section; 130. the blade root section of the first-stage stationary blade; 140. a first stage stationary blade handle;
200. a first-stage moving blade; 210. the blade tip section of the first-stage moving blade; 211. the front edge of the tip section of the first-stage moving blade; 212. the blade tip section tail edge of the first-stage moving blade; 220. the first-stage moving blade middle section; 230. first-stage moving blade root section; 240. a primary moving blade tenon; 300. a second stage stationary blade; 400. a second-stage moving blade; 500. a blade assembly.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.
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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in both the present application and one or more embodiments. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing the association object, and means that three relationships may exist, for example, a and/or B, and may mean: there are three cases of A, both A and B, and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).
In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
At present, the blades of the traditional turbine power generation device on the market mostly adopt the design of short chord length in order to ensure the efficiency of the unit. Although the friction loss of the blade profile boundary layer can be reduced, the chord length of the blade is too short, so that the number of the blades is inevitably large in order to ensure that the relative grid distance meets the requirement, the blade is generally thin in design, the turning angle of the blade is low, the corrosion resistance is weak, the single-stage expansion ratio is low, and the requirements of the current industry cannot be met.
The blade assembly disclosed in the embodiment of the present application includes, but is not limited to, a Top Gas Pressure Recovery Turbine (TRT) power generation device, a Turbine generator, a steam Turbine, an axial flow fan, a compressor, and other devices and equipment that need to be provided with a rotating blade to guide or flow Gas.
According to an aspect of an embodiment of the present application, as shown in fig. 1 and 2, there is provided a blade assembly 500 for a turbine power plant, including a first stage stationary blade 100 and a first stage moving blade 200; the outlet structure angle of the first-stage stationary blade 100 and the inlet structure angle of the first-stage moving blade 200 are arranged in a matching manner; the outlet structure angle of the blade tip section of the first-stage stationary blade, the outlet structure angle of the blade middle section of the first-stage stationary blade and the outlet structure angle of the blade root section of the first-stage stationary blade are sequentially increased in an increasing manner; the inlet structure angle of the tip section of the first-stage moving blade, the inlet structure angle of the inner section of the first-stage moving blade and the inlet structure angle of the root section of the first-stage moving blade are gradually decreased; the chord length of the blade tip section of the first-stage stationary blade, the chord length of the blade section of the first-stage stationary blade and the chord length of the blade root section of the first-stage stationary blade are sequentially decreased; the chord length of the first-stage moving blade tip section is smaller than the chord length of the first-stage moving blade root section.
The blade tip section, the section in the leaf and the blade root section are got in proper order to the blade radial by high to low, and the key geometric characteristics parameter of every section mainly includes: chord length, maximum thickness, leading edge radius, trailing edge radius, inlet structure angle, outlet structure angle and blade profile mounting angle, and the three-dimensional structure of the blade body is obtained by radially stacking three sections.
Table 1 below is a plurality of design parameters for each section of the first stage stationary blade 100:
TABLE 1
Fig. 3 shows a high-to-low stage-one stationary blade tip section 110, a stage-one stationary blade mid-section 120 and a stage-one stationary blade root section 130 in the stage-one stationary blade radial direction, and fig. 4 shows a schematic positional relationship diagram of the stage-one stationary blade tip section 110; referring to fig. 3 and 4, the blade chord length L1 refers to the maximum distance between the leading edge and the trailing edge of the blade; the maximum thickness of the blade means that the blade is made to be in the middle line of the blade and the basin line l c Leaf back line l d The maximum diameter of the circle that is tangent at the same time; leading edge radius refers to the inlet side blade basin line l c And leaf back line l d The fillet radius of the connection between the two; trailing edge radius refers to exhaust side lobe basin line l c And leaf back line l d The fillet radius therebetween; the inlet structure angle alpha 1 refers to an included angle between a tangent line of the center line of the blade at the front edge and the axis, the included angle is negative when the included angle is positioned above the axis, and the included angle is positive when the included angle is positioned below the axis; the outlet configuration angle beta 1 refers to the angle between the tangent to the blade centerline at the trailing edge and the axis,the included angle is positive above the axis and negative below the axis; the stagger angle θ 1 refers to the angle between the chord line of the airfoil of the blade and the circumferential direction.
Referring to fig. 3 and 4 in combination with table 1 above, the chord length L1 of the blade tip section of the first-stage stationary blade is 210 to 270mm, the chord length of the blade root section of the first-stage stationary blade is 170 to 230mm, and the chord length of the blade root section of the first-stage stationary blade is 130 to 190mm. The front edge radius of the blade tip section of the first-stage stationary blade, the front edge radius of the blade leaf section of the first-stage stationary blade and the front edge radius of the blade root section of the first-stage stationary blade are equal and are 4-8mm, and the error between the front edge radii of all the sections is less than 2mm; the trailing edge radius of the blade tip section of the first-stage stationary blade, the trailing edge radius of the blade leaf section of the first-stage stationary blade and the trailing edge radius of the blade root section of the first-stage stationary blade are equal and are 1-3 mm, and the trailing edge radius error of each section is smaller than 2mm. The inlet structure angle alpha 1 of the blade tip section of the first-stage stationary blade, the inlet structure angle of the blade middle section of the first-stage stationary blade and the inlet structure angle of the blade root section of the first-stage stationary blade are equal and range from-11 degrees to-1 degrees, and the inlet structure angle error of each section is less than 2.5 degrees.
The inlet structure angles of the first-stage stationary blade tip section 110, the first-stage stationary blade middle section 120 and the first-stage stationary blade root section 130 are equal, the outlet structure angles are sequentially increased, the chord lengths are sequentially decreased, and the first-stage stationary blade tip section, the first-stage stationary blade middle section 120 and the first-stage stationary blade root section 130 can rotate around the blade shank axis to realize the adjustment and stabilization of the top pressure of the blast furnace, and can realize the conditions of completely closing a flow channel and adjusting the inlet airflow to better enter the first-stage moving blade 200 for doing work.
As shown in fig. 4, the included angle between the chord line L1 of the first-stage stationary blade tip section and the Y axis is the installation angle θ 1 of the first-stage stationary blade tip section. The installation angle of the blade tip section of the first-stage stationary blade is 36-41 degrees, the installation angle of the blade tip section of the first-stage stationary blade is 38.5-43.5 degrees, and the installation angle of the blade root section of the first-stage stationary blade is 41-46 degrees.
The outlet structure angles of the first-stage stationary blade tip section 110, the first-stage stationary blade mid-section 120 and the first-stage stationary blade root section 130 and the inlet structure angles of the first-stage moving blade tip section 210, the first-stage moving blade mid-section 220 and the first-stage moving blade root section 230 are designed to be matched in a one-to-one correspondence manner; the outlet structure angle beta 1 of the blade tip section of the first-stage stationary blade is-75 degrees to-65 degrees, the outlet structure angle of the blade tip section of the first-stage stationary blade is-74 degrees to-64 degrees, and the outlet structure angle of the blade root section of the first-stage stationary blade is-73 degrees to-63 degrees. Referring to fig. 6, an inlet structure angle α 2 of a blade tip section of the first-stage moving blade is 4 ° to 14 °, an inlet structure angle of a blade tip section of the first-stage moving blade is-29 ° to-19 °, and an inlet structure angle of a blade root section of the first-stage moving blade is-49 ° to-39 °.
The first-stage stationary blade tip section outlet structure angle β 1 and the first-stage moving blade tip section inlet structure angle α 2 (refer to fig. 6) are arranged in a mutually matched manner, so that the airflow can stably and axially flow through the first-stage stationary blades 100 and the first-stage moving blades 200; the outlet structure angle of the first-stage stationary blade mid-section 120 and the inlet structure angle of the first-stage stationary blade root cross-section 130 are respectively matched with the inlet structure angle of the first-stage moving blade mid-section 220 and the inlet structure angle of the first-stage moving blade root cross-section 230 in terms of optimized parameters. According to the mechanical design principle of the impeller, the geometric parameters of the blade structure are optimally designed, so that airflow uniformly flows in the first-stage stationary blades 100 and the first-stage moving blades 200, the stability of the turbine power generation device is improved, and the service life of the turbine power generation device is prolonged.
The number of the first-stage stationary blades 100 is 20-30; the first stage stator vane 100 further includes a first stage stator vane stem 140 for fixing the first stage stator vane 100 to a stator vane inner casing (not shown) in the turbine power plant so that the first stage stator vane 100 can be rotated about the stem axis to adjust the turbine power plant operating condition and the blast furnace top pressure.
In an alternative embodiment of the present application, the specific parameters of the first stage stationary blade 100 are as follows:
the first stage stationary blade tip section 110 is: the chord length L1 is 242mm, the radius of the front edge is 6mm, the radius of the tail edge is 2mm, the inlet structure angle alpha 1 is 5 degrees, the outlet structure angle beta 1 is-70 degrees, the installation angle theta 1 is 39 degrees, and the maximum thickness of the blade tip section 110 of the first-stage stationary blade is 36mm.
The first stage stationary blade lobe section 120 is: the chord length is 200mm, the radius of the front edge is 6mm, the radius of the tail edge is 2mm, the inlet structure angle is 5 degrees, the outlet structure angle is-69 degrees, the installation angle is 41 degrees, and the maximum thickness of the inner section 120 of the first-stage stationary blade vane is 28.5mm.
The first stage stationary blade root section 130 is: the chord length is 160mm, the radius of the leading edge is 6mm, the radius of the trailing edge is 2mm, the inlet structure angle is 5 degrees, the outlet structure angle is-68 degrees, the installation angle is 43 degrees, and the maximum thickness of the blade root section 130 of the first-stage stationary blade is 31mm.
Given the specific parameters and schemes of the first stage stationary blades 100 of the blade assembly 500, the following further explains the detailed optimized design of the first stage moving blades 200 of the blade assembly 500:
in some embodiments of the present application, table 2 below shows a plurality of design parameters for each section of a first stage moving blade 200:
TABLE 2
FIG. 5 illustrates a first stage moving blade tip section 210, a first stage moving blade bucket section 220, and a first stage moving blade root section 230 from high to low along the first stage moving blade radial direction; as shown in fig. 5 and 6, the maximum length of the first-stage moving blade 200 in the direction of connecting two end points is the chord length of the first-stage moving blade, the chord length of the first-stage moving blade root section is smaller than the chord length L2 of the first-stage moving blade tip section, and the chord length of the first-stage moving blade root section is larger than the chord length of the first-stage moving blade root section; as can be seen from Table 2, the chord length L2 of the blade tip section of the first-stage moving blade is 205-265 mm; the chord length of the section 220 of the first-stage moving blade vane is 190-250 mm; the chord length of the first stage moving blade root section 230 is 210-270 mm.
The radius of the front edge of the blade tip section of the first-stage moving blade is 1-5 mm, the radius of the front edge of the blade tip section of the first-stage moving blade is 2-6 mm, and the radius of the front edge of the blade root section of the first-stage moving blade is 5-12 mm;
the trailing edge radius of the tip section of the first-stage moving blade, the trailing edge radius of the inner section of the first-stage moving blade and the trailing edge radius of the root section of the first-stage moving blade are sequentially increased. The radius of the tail edge of the blade tip section of the first-stage moving blade is 0.5-3 mm, the radius of the tail edge of the blade tip section of the first-stage moving blade is 1-3.5 mm, and the radius of the tail edge of the blade root section of the first-stage moving blade is 1.5-4 mm.
The mounting angle theta 2 of the blade tip section of the first-stage moving blade, the mounting angle of the blade middle section of the first-stage moving blade and the mounting angle of the blade root section of the first-stage moving blade are gradually increased. The installation angle of the blade tip section of the first-stage moving blade is 22-32 degrees, the installation angle of the blade tip section of the first-stage moving blade is 45-55 degrees, and the installation angle of the blade root section of the first-stage moving blade is 73-83 degrees.
The aerodynamic efficiency and the blade reliability are improved by systematically optimizing the installation angle theta 2 of the blade tip section of the first-stage moving blade, the installation angle of the blade tip section of the first-stage moving blade and the installation angle of the blade root section of the first-stage moving blade along with the inlet structure angle alpha 2 of the blade tip surface of the first-stage moving blade, the inlet structure angle of the blade root section of the first-stage moving blade, the inlet structure angle of the blade tip section of the first-stage moving blade, the outlet structure angle of the blade root section of the first-stage moving blade, the chord length L2 of the blade tip section of the first-stage moving blade, the chord length of the blade tip section of the first-stage moving blade and the chord length of the blade root section of the first-stage moving blade.
And the outlet structure angle beta 2 of the tip section of the first-stage moving blade, the outlet structure angle of the inner section of the first-stage moving blade and the outlet structure angle of the root section of the first-stage moving blade are gradually decreased. The outlet structure angle beta 2 of the blade tip section of the first-stage moving blade is 71-87 degrees, the outlet structure angle of the blade tip section of the first-stage moving blade is 61-71 degrees, and the outlet structure angle of the blade root section of the first-stage moving blade is 59-69 degrees.
In some embodiments, the number of the first-stage moving blades 200 is 20 to 25, and the first-stage moving blade 200 further includes a first-stage moving blade tenon 240 for mounting the first-stage moving blade 200 on a main shaft in a turbine power generation apparatus so that the first-stage moving blade 200 can rotate with the main shaft.
In the embodiment of the present application, as shown in fig. 5 and fig. 6, the specific parameters of the first-stage moving blade 200 are as follows:
the first stage moving blade tip section 210 is: the chord length L2 is 235mm, the radius of the front edge is 2mm, the radius of the tail edge is 1.2mm, the inlet structure angle alpha 2 is 9 degrees, the outlet structure angle beta 2 is 78 degrees, the installation angle theta 2 is 28 degrees, and the maximum thickness of the tip section 210 of the first-stage moving blade is 27.5mm.
The first stage moving blade lobe cross-section 220 is: the chord length is 220mm, the radius of the front edge is 3mm, the radius of the tail edge is 1.5mm, the inlet structure angle is-25 degrees, the outlet structure angle is 66 degrees, the installation angle is 50 degrees, and the maximum thickness of the inner section 220 of the first-stage moving blade vane is 32.5mm.
First stage moving blade root section 230 is: the chord length is 230mm, the radius of the leading edge is 8mm, the radius of the trailing edge is 2.5mm, the inlet structure angle is minus 45 degrees, the outlet structure angle is 64 degrees, the installation angle is 78 degrees, and the maximum thickness of the blade root section 230 of the first-stage moving blade is 52.5mm.
It should be noted that the first stage vane blade shank 140 and the first stage blade tenon 240 mentioned in the present application may be in any form capable of achieving the same function and function as the present application.
In an embodiment of the present application, the blade assembly further includes a second stage stationary blade 300 and a second stage moving blade 400, and the second stage stationary blade 300 and the second stage moving blade 400 are oppositely arranged; and the outlet structure angle of each section of the secondary stationary blade is matched with the inlet structure angle of each section of the secondary moving blade. Table 3 below is a plurality of design parameters for each section of the second stage stationary blade 100:
TABLE 3
The overall shape of the second stage stationary blade 300 is similar to that of the first stage stationary blade 100, and therefore the present application does not show a structural schematic of a cross section of the second stage stationary blade 300.
The chord length of the blade tip section of the second-stage stationary blade, the chord length of the blade inner section of the second-stage stationary blade and the chord length of the blade root section of the second-stage stationary blade are sequentially decreased; the chord length of the blade tip section of the second-stage stationary blade is 175-235 mm, and the chord length of the blade tip section of the second-stage stationary blade is 130-190 mm; the chord length of the blade root section of the second-stage stationary blade is 90-150 mm.
The front edge radius of the blade tip section of the secondary stationary blade, the front edge radius of the blade section of the secondary stationary blade and the front edge radius of the blade root section of the secondary stationary blade are equal and are 4-8mm, and the error between the front edge radii of the sections is less than 2mm;
the trailing edge radius of the blade tip section of the second-stage stationary blade, the trailing edge radius of the blade section of the second-stage stationary blade and the trailing edge radius of the blade root section of the second-stage stationary blade are equal and are 1-3 mm, and the error between the trailing edge radii of all the sections is less than 2mm;
the inlet structure angles of the second-stage stationary blade tip section, the second-stage stationary blade inner section and the second-stage stationary blade root section are matched with the outlet structure angles of the first-stage moving blade tip section 210, the first-stage moving blade inner section 220 and the first-stage moving blade root section 230; the inlet structure angle of the blade tip section of the second-stage stationary blade is-15 degrees to-5 degrees, the inlet structure angle of the blade tip section of the second-stage stationary blade is 0 degree to 10 degrees, and the inlet structure angle of the blade root section of the second-stage stationary blade is 16 degrees to 26 degrees.
The mounting angles of the blade tip sections of the secondary stationary blades, the mounting angles of the blade inner sections of the secondary stationary blades and the mounting angles of the blade root sections of the secondary stationary blades are sequentially increased in an increasing manner; the mounting angle of the blade tip section of the second-stage stationary blade is 32-42 degrees, the mounting angle of the blade tip section of the second-stage stationary blade is 36-46 degrees, and the mounting angle of the blade root section of the second-stage stationary blade is 42-52 degrees.
The outlet structure angles of the blade tip section of the second-stage stationary blade, the blade section of the second-stage stationary blade and the blade root section of the second-stage stationary blade are matched with the inlet structure angles of the blade tip section of the second-stage moving blade, the blade section of the second-stage moving blade and the blade root section of the second-stage moving blade, so that the airflow is ensured to stably flow through the second-stage stationary blade and the second-stage moving blade; the inlet structure angle of the blade tip section of the second-stage stationary blade, the inlet structure angle of the blade section of the second-stage stationary blade and the inlet structure angle of the blade root section of the second-stage stationary blade are sequentially increased in an increasing manner; the outlet structure angle of the blade tip section of the second-stage stationary blade is-80 degrees to-70 degrees, the outlet structure angle of the blade tip section of the second-stage stationary blade is-73 degrees to-63 degrees, and the outlet structure angle of the blade root section of the second-stage stationary blade is-70 degrees to-60 degrees.
The inlet structure angle of the blade tip section of the second-stage moving blade, the inlet structure angle of the blade middle section of the second-stage moving blade and the inlet structure angle of the blade root section of the second-stage moving blade are gradually decreased; the inlet structure angle of the blade tip section of the secondary moving blade is 28-38 degrees, the inlet structure angle of the blade tip section of the secondary moving blade is-24 degrees to-14 degrees, and the inlet structure angle of the blade root section of the secondary moving blade is-50 degrees to-40 degrees.
The number of the second-stage stationary blades 300 is 20-30; the second stage stationary blade 300 further includes a second stage stationary blade shank for securing the second stage stationary blade 300 to a stationary blade inner casing (not shown) in the turbine power plant so that the second stage stationary blade 300 can be rotated about the shank axis to adjust the operating condition of the turbine power plant.
In the embodiment of the present application, the specific parameters of the second stage stationary blade 300 are as follows:
the chord length of the blade tip section of the second-stage stationary blade is 205mm, the radius of the front edge is 6mm, the radius of the tail edge is 2mm, the angle of the inlet structure is minus 10 degrees, the angle of the outlet structure is minus 75 degrees, the installation angle is 37 degrees, and the maximum thickness of the blade tip section of the second-stage stationary blade is 34mm.
The chord length of the section of the secondary stationary blade vane is 160mm, the radius of the front edge is 6mm, the radius of the tail edge is 2mm, the inlet structure angle is 5 degrees, the outlet structure angle is-68 degrees, the installation angle is 50 degrees, and the maximum thickness of the section of the secondary stationary blade vane is 20mm.
The chord length of the blade root section of the second-stage stationary blades is 120mm, the radius of the front edge is 6mm, the radius of the tail edge is 2mm, the inlet structure angle is 21 degrees, the outlet structure angle is-65 degrees, the installation angle is 54 degrees, the maximum thickness of the blade root section of the second-stage stationary blades is 18-22 mm, and the number of the second-stage stationary blades 300 is 30-40.
Given the above description of the specific parameters and configurations of the second stage stationary vanes 300 of the bucket assembly according to the present embodiment, the following further describes the detailed design of the second stage moving vanes 400 of the bucket assembly according to the present invention. Table 4 below shows a number of design parameters for each section of the second stage moving blade 400:
TABLE 4
The overall shape of secondary rotor blade 400 is similar to that of primary rotor blade 200, and therefore, the structural view of the cross section of secondary rotor blade 400 is not shown in the drawings. In some embodiments, the chord length of the blade tip section of the secondary moving blade is 210-270 mm, and the chord length of the blade tip section of the secondary moving blade is 205-265 mm; the chord length of the blade root section of the second-stage moving blade is 190-250 mm.
The front edge radius of the blade tip section of the second-stage moving blade, the front edge radius of the blade middle section of the second-stage moving blade and the front edge radius of the blade root section of the second-stage moving blade are sequentially increased; the radius of the front edge of the blade tip section of the secondary moving blade is 1-5 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 2-7 mm; the radius of the front edge of the blade root section of the second-stage moving blade is 6-15 mm.
The radius of the trailing edge of the blade tip section of the second-stage moving blade, the radius of the trailing edge of the blade tip section of the second-stage moving blade and the radius of the trailing edge of the blade root section of the second-stage moving blade are sequentially increased; the radius of the front edge of the blade tip section of the secondary moving blade is 0.5-3 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 1.5-4 mm; the radius of the front edge of the blade root section of the second-stage moving blade is 2-6 mm.
The mounting angles of the blade tip sections of the secondary moving blades, the mounting angles of the blade inner sections of the secondary moving blades and the mounting angles of the blade root sections of the secondary moving blades are sequentially increased; the mounting angle of the blade tip section of the secondary moving blade is 15-25 degrees, and the mounting angle of the blade tip section of the secondary moving blade is 41-51 degrees; the installation angle of the blade root section of the second-stage moving blade is 60-85 degrees.
The outlet structure angle of the blade tip section of the second-stage moving blade, the outlet structure angle of the blade tip section of the second-stage moving blade and the outlet structure angle of the blade root section of the second-stage moving blade are gradually decreased; the outlet structure angle of the blade tip section of the secondary moving blade is 70-85 degrees, and the outlet structure angle of the blade tip section of the secondary moving blade is 62-72 degrees; and the outlet structure angle of the blade root section of the second-stage moving blade is 53-63 degrees.
In an alternative embodiment of the present application, the specific parameters of the secondary moving blade 400 are set as follows:
the chord length of the tip section of the secondary moving blade is 240mm, the radius of the front edge is 3.5mm, the radius of the tail edge is 1mm, the inlet structure angle is 33 degrees, the outlet structure angle is 80 degrees, the installation angle is 20 degrees, and the maximum thickness of the tip section of the secondary moving blade 400 is 15mm.
The chord length of the inner section of the secondary moving blade leaf is 235mm, the radius of the front edge is 6mm, the radius of the tail edge is 2.5mm, the inlet structure angle is-19 degrees, the outlet structure angle is-67 degrees, the installation angle is 45 degrees, and the maximum thickness of the inner section of the secondary moving blade leaf is 30mm.
The chord length of the second-stage moving blade root section is 220mm, the radius of the leading edge is 10mm, the radius of the trailing edge is 4mm, the inlet structure angle is-45 degrees, the outlet structure angle is-58 degrees, the installation angle is 78 degrees, and the maximum thickness of the second-stage moving blade root section is 60mm.
The number of the secondary moving blades 400 is 20-25, and the secondary moving blades 400 further include secondary moving blade tenons for fixing the secondary moving blades 400 to a rotor main shaft in the turbine power generation device and rotating together with a rotating shaft, and when the airflow flows through the secondary moving blades, the secondary moving blades convert part of energy contained in the airflow into mechanical energy.
Since the first-stage moving blade 200 and the second-stage moving blade 400 have the same structure, please refer to fig. 5, both use fir-tree tenons, and the first-stage moving blade 200 and the second-stage moving blade 400 are installed by the fir-tree tenons in cooperation with the mortises on the main shaft, while the mortises in cooperation with the fir-tree tenons are formed by broaching with broaches. Of course, if the first-stage moving blades and the second-stage moving blades are in other tenon structures, the number of the first-stage moving blades and the number of the second-stage moving blades may be different.
In the embodiment of the present application, the chord length design of each section of the first-stage stationary blades 100, the first-stage moving blades 200, the second-stage stationary blades 300, and the second-stage moving blades 400 in the blade assembly 500 is optimized, so that the chord length of each section of each blade is increased, and the number of blades can be effectively reduced. On the other hand, in the embodiment of the present application, since the chord lengths of the sections of the first-stage stationary blades 100, the first-stage moving blades 200, the second-stage stationary blades 300, and the second-stage moving blades 400 are all increased, and other geometric parameter designs are matched, so that the thickness of each blade can be set to be larger, the corrosion resistance and the abrasion resistance of each blade are improved, the load distribution of each blade along the meridian plane is more uniform, and the improvement of the overall unit efficiency of the overall turbine power generation device of the turbine power generation device is facilitated. In the third aspect, in the embodiment of the present application, the chord lengths and the thicknesses of the sections of the first-stage stationary blade 100, the first-stage moving blade 200, the second-stage stationary blade 300, and the second-stage moving blade 400 of the blade assembly are lengthened and widened, so that each blade can adopt a larger turning angle, the expansion ratio of each blade is improved, and the work capacity of each blade is improved.
According to another aspect of an embodiment of the present application, a turbine power plant is provided, which includes the blade assembly 500 of any one of the above embodiments.
The preferred volume of the blast furnace top gas residual pressure recovery turbine power generation device is 1580m 3 ～2200m 3 By a hub with the diameter of 900mm, the height of a flow channel is 200 mm-240 mm, the two-stage turbine level meets the load factor of 1.2-1.5, the reaction degree is 0.3-0.55, the isentropic efficiency of the turbine can reach 88% -89%, and the characteristic line of CFD (Computational Fluid Dynamics) simulation verification is shown in figure 7; as can be seen from fig. 7, according to the CFD calculation result, the blade assembly 500 provided by the present application is adopted in the TRT turbine power generation apparatus, and the design point a is taken as an example, so that the aerodynamic efficiency of the overall unit efficiency of the turbine power generation apparatus can reach 88% to 89%.
It should be noted that the first stage stationary blades and the second stage stationary blades can rotate around the corresponding blade shank center line, and a new design obtained by obtaining the geometric parameters of the first stage stationary blades and the second stage stationary blades through rotation is also within the scope of the claims of the present application. In addition, new designs that are scaled down or scaled up in accordance with design parameters of the bucket assembly according to embodiments of the present application are also within the scope of the claims of the present application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.
Claims (10)
1. A blade assembly, characterized in that the blade assembly comprises:
the first-stage static blades and the first-stage moving blades are oppositely arranged;
the outlet structure angle of the first-stage stationary blade and the inlet structure angle of the first-stage moving blade are arranged in a matched mode;
the outlet structure angle of the blade tip section of the first-stage stationary blade, the outlet structure angle of the blade middle section of the first-stage stationary blade and the outlet structure angle of the blade root section of the first-stage stationary blade are sequentially increased in an increasing manner;
the inlet structure angle of the tip section of the first-stage moving blade, the inlet structure angle of the inner section of the first-stage moving blade and the inlet structure angle of the root section of the first-stage moving blade are gradually decreased;
the chord length of the blade tip section of the first-stage stationary blade, the chord length of the blade section of the first-stage stationary blade and the chord length of the blade root section of the first-stage stationary blade are sequentially decreased;
the chord length of the first-stage moving blade tip section is smaller than the chord length of the first-stage moving blade root section.
2. The blade assembly according to claim 1, characterized in that the outlet structure angle of the first stage stationary blade tip section is-75 ° to-65 °, the outlet structure angle of the first stage stationary blade leaf section is-74 ° to-64 °, the outlet structure angle of the first stage stationary blade root section is-73 ° to-63 °;
the inlet structure angle of the blade tip section of the first-stage moving blade is 4-14 degrees, the inlet structure angle of the blade tip section of the first-stage moving blade is-29 degrees to-19 degrees, and the inlet structure angle of the blade root section of the first-stage moving blade is-49 degrees to-39 degrees;
the chord length of the blade tip section of the first-stage stationary blade is 210-270 mm, the chord length of the blade tip section of the first-stage stationary blade is 170-230 mm, and the chord length of the blade root section of the first-stage stationary blade is 130-190 mm;
the chord length of the blade tip section of the first-stage moving blade is 205-265 mm, the chord length of the blade tip section of the first-stage moving blade is 190-250 mm, and the chord length of the blade root section of the first-stage moving blade is 210-270 mm.
3. The blade assembly according to claim 1, characterized in that the leading edge radius of the first stage stationary blade tip section, the leading edge radius of the first stage stationary blade tip section and the leading edge radius of the first stage stationary blade root section are equal and are 4-8mm;
the trailing edge radius of the blade tip section of the first-stage stationary blade, the trailing edge radius of the blade leaf section of the first-stage stationary blade and the trailing edge radius of the blade root section of the first-stage stationary blade are equal and are 1-3 mm;
the inlet structure angle of the blade tip section of the first-stage stationary blade, the inlet structure angle of the blade tip section of the first-stage stationary blade and the inlet structure angle of the blade root section of the first-stage stationary blade are equal and range from-11 degrees to-1 degrees.
4. The blade assembly according to claim 3, characterized in that the stagger angle of the first stage stationary blade tip section, the stagger angle of the first stage stationary blade leaf section and the stagger angle of the first stage stationary blade root section are sequentially increasing;
the installation angle of the blade tip section of the first-stage stationary blade is 36-41 degrees, the installation angle of the blade tip section of the first-stage stationary blade is 38.5-43.5 degrees, and the installation angle of the blade root section of the first-stage stationary blade is 41-46 degrees.
5. The blade assembly according to claim 1, characterized in that the leading edge radius of the first stage moving blade tip section, the leading edge radius of the first stage moving blade tip section and the leading edge radius of the first stage moving blade root section are sequentially increasing;
the radius of the front edge of the blade tip section of the first-stage moving blade is 1-5 mm, the radius of the front edge of the blade tip section of the first-stage moving blade is 2-6 mm, and the radius of the front edge of the blade root section of the first-stage moving blade is 5-12 mm;
the trailing edge radius of the tip section of the first-stage moving blade, the trailing edge radius of the inner section of the first-stage moving blade and the trailing edge radius of the root section of the first-stage moving blade are sequentially increased;
the radius of the tail edge of the blade tip section of the first-stage moving blade is 0.5-3 mm, the radius of the tail edge of the blade tip section of the first-stage moving blade is 1-3.5 mm, and the radius of the tail edge of the blade root section of the first-stage moving blade is 1.5-4 mm;
the mounting angle of the tip section of the first-stage moving blade, the mounting angle of the inner section of the first-stage moving blade and the mounting angle of the root section of the first-stage moving blade are sequentially increased;
the installation angle of the blade tip section of the first-stage moving blade is 22-32 degrees, the installation angle of the blade tip section of the first-stage moving blade is 45-55 degrees, and the installation angle of the blade root section of the first-stage moving blade is 73-83 degrees;
the outlet structure angle of the tip section of the first-stage moving blade, the outlet structure angle of the inner section of the first-stage moving blade and the outlet structure angle of the root section of the first-stage moving blade are gradually decreased;
the outlet structure angle of the blade tip section of the first-stage moving blade is 71-87 degrees, the outlet structure angle of the blade tip section of the first-stage moving blade is 61-71 degrees, and the outlet structure angle of the blade root section of the first-stage moving blade is 59-69 degrees.
6. The blade assembly according to claim 1, further comprising second stage stationary blades and second stage moving blades, the second stage stationary blades and the second stage moving blades being oppositely disposed;
the outlet structure angle of the second-stage stationary blade and the inlet structure angle of the second-stage moving blade are arranged in a matched mode;
the outlet structure angle of the blade tip section of the second-stage stationary blade, the outlet structure angle of the blade inner section of the second-stage stationary blade and the outlet structure angle of the blade root section of the second-stage stationary blade are sequentially increased in an increasing manner;
the outlet structure angle of the blade tip section of the secondary stationary blade is-70 degrees to-80 degrees, the outlet structure angle of the blade tip section of the secondary stationary blade is-63 degrees to-73 degrees, and the outlet structure angle of the blade root section of the secondary stationary blade is-60 degrees to-70 degrees;
the inlet structure angle of the blade tip section of the second-stage moving blade, the inlet structure angle of the blade tip section of the second-stage moving blade and the inlet structure angle of the blade root section of the second-stage moving blade are gradually decreased;
the inlet structure angle of the blade tip section of the secondary moving blade is 28-38 degrees, the inlet structure angle of the blade tip section of the secondary moving blade is-24 degrees to-14 degrees, and the inlet structure angle of the blade root section of the secondary moving blade is-50 degrees to-40 degrees;
the chord length of the blade tip section of the second-stage stationary blade, the chord length of the blade middle section of the second-stage stationary blade and the chord length of the blade root section of the second-stage stationary blade are gradually decreased;
the chord length of the blade tip section of the second-stage stationary blade is 175-235 mm, and the chord length of the blade tip section of the second-stage stationary blade is 130-190 mm; the chord length of the blade root section of the second-stage stationary blade is 90-150 mm;
the chord length of the blade tip section of the second-stage moving blade, the chord length of the blade middle section of the second-stage moving blade and the chord length of the blade root section of the second-stage moving blade are gradually reduced;
the chord length of the blade tip section of the secondary moving blade is 210-270 mm, and the chord length of the blade tip section of the secondary moving blade is 205-265 mm; the chord length of the blade root section of the second-stage moving blade is 190-250 mm.
7. The blade assembly according to claim 6, characterized in that the leading edge radius of the secondary stationary blade tip section, the leading edge radius of the secondary stationary blade tip section and the leading edge radius of the secondary stationary blade root section are equal and are 4-8mm;
the trailing edge radius of the blade tip section of the secondary stationary blade, the trailing edge radius of the blade leaf section of the secondary stationary blade and the trailing edge radius of the blade root section of the secondary stationary blade are equal and are 1-3 mm;
the inlet structure angle of the second-stage stationary blade is matched with the outlet structure angle of the first-stage moving blade; the inlet structure angle of the blade tip section of the second-stage stationary blade, the inlet structure angle of the blade section of the second-stage stationary blade and the inlet structure angle of the blade root section of the second-stage stationary blade are sequentially increased in an increasing manner;
the inlet structure angle of the blade tip section of the second-stage stationary blade is-15 degrees to-5 degrees, the inlet structure angle of the blade tip section of the second-stage stationary blade is 0 degree to 10 degrees, and the inlet structure angle of the blade root section of the second-stage stationary blade is 16 degrees to 26 degrees.
8. The blade assembly according to claim 7, wherein the stagger angle of the secondary stationary blade tip section, the stagger angle of the secondary stationary blade leaf section and the stagger angle of the secondary stationary blade root section are sequentially increasing;
the mounting angle of the blade tip section of the second-stage stationary blade is 32-42 degrees, the mounting angle of the blade tip section of the second-stage stationary blade is 36-46 degrees, and the mounting angle of the blade root section of the second-stage stationary blade is 42-52 degrees.
9. The blade assembly according to claim 6 wherein the leading edge radius of the secondary moving blade tip section, the leading edge radius of the secondary moving blade mid-section, and the leading edge radius of the secondary moving blade root section are sequentially increasing;
the radius of the front edge of the blade tip section of the secondary moving blade is 1-5 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 2-7 mm; the radius of the front edge of the blade root section of the second-stage moving blade is 6-15 mm;
the trailing edge radius of the blade tip section of the secondary moving blade, the trailing edge radius of the blade leaf section of the secondary moving blade and the trailing edge radius of the blade root section of the secondary moving blade are sequentially increased;
the radius of the front edge of the blade tip section of the secondary moving blade is 0.5-3 mm, and the radius of the front edge of the blade tip section of the secondary moving blade is 1.5-4 mm; the radius of the front edge of the section of the second-stage moving blade root is 2-6 mm;
the mounting angles of the blade tip sections of the secondary moving blades, the mounting angles of the blade inner sections of the secondary moving blades and the mounting angles of the blade root sections of the secondary moving blades are sequentially increased;
the mounting angle of the blade tip section of the secondary moving blade is 15-25 degrees, and the mounting angle of the blade tip section of the secondary moving blade is 41-51 degrees; the installation angle of the blade root section of the second-stage moving blade is 60-85 degrees;
the outlet structure angle of the blade tip section of the second-stage moving blade, the outlet structure angle of the blade middle section of the second-stage moving blade and the outlet structure angle of the blade root section of the second-stage moving blade are gradually decreased;
the outlet structure angle of the blade tip section of the secondary moving blade is 70-85 degrees, and the outlet structure angle of the blade tip section of the secondary moving blade is 62-72 degrees; and the outlet structure angle of the blade root section of the second-stage moving blade is 53-63 degrees.
10. A turbine power plant, characterized in that it comprises: the blade assembly according to any one of claims 1-9;
the number of the first-stage stationary blades on the turbine power generation device is 20-30;
the number of the first-stage moving blades on the turbine power generation device is 20-25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636500.7U CN218093151U (en) | 2022-10-08 | 2022-10-08 | Blade assembly and turbine power generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636500.7U CN218093151U (en) | 2022-10-08 | 2022-10-08 | Blade assembly and turbine power generation device |
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| CN218093151U true CN218093151U (en) | 2022-12-20 |
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