CN209483430U - A kind of turbine blade - Google Patents
A kind of turbine blade Download PDFInfo
- Publication number
- CN209483430U CN209483430U CN201821936251.0U CN201821936251U CN209483430U CN 209483430 U CN209483430 U CN 209483430U CN 201821936251 U CN201821936251 U CN 201821936251U CN 209483430 U CN209483430 U CN 209483430U
- Authority
- CN
- China
- Prior art keywords
- blade
- reinforcing rib
- protrusion
- profile
- recess portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of turbine blades, are related to turbine blade and solve unreasonable structural design, cause to lead to the problem of resonance when operation and damage.The utility model includes blade body, the blade body includes leaf top, blade profile, blade root, it is characterized in that, the junction of the Ye Dingyu shroud is provided with the first reinforcing rib, the surface of first reinforcing rib is inclined-plane, the blade profile is obliquely installed, one end of blade profile is equipped with the second reinforcing rib, second reinforcing rib is arranged straight down, the blade root is fixedly connected with impeller, blade root is equipped with multiple continuous first recess portions and multiple continuous first protrusions, impeller is equipped with multiple continuous second recess portions and multiple continuous second protrusions, first recess portion is engaged with the second protrusion, it is engaged with the second protrusion first protrusion, the first recess portion of the blade root and the first protrusion are symmetric with middle line.The utility model has many advantages, such as that reliability, spoilage are low, bearing capacity is big, degree adaptation is strong.
Description
Technical field
The utility model relates to turbine blades, and in particular to a kind of turbine blade.
Background technique
The general name of rotor and stator blade steel in steam turbing blade renewal (steel for turbin blade) steam turbine.Blade is
The key part of steam turbine, and be one of most fine, most important part.It born under the exacting terms of pole high temperature, high pressure,
The collective effect of huge centrifugal force, steam power, steam-excited vibration power, corrosion and vibration and wet-steam region water droplet erosion.It is empty
Aerodynamic properties, processing geometry, surface roughness, the installation factors influences steamer such as gap and operating condition, fouling
Efficiency, the power output of machine；The design of its structure, oscillation intensity and the method for operation then play conclusive shadow to the security reliability of unit
It rings.
Turbine blade is subject biggish moment of flexure in work by the effect of high temperature and high pressure steam, run at high speed in it is dynamic
Blade still suffers from very high centrifugal force.
So turbine blade damage accident takes place frequently, many blade construction designs are unreasonable, cause to generate resonance when operation
And damage, if perturbed force is very big, or even can break down after operation a few houres.
Utility model content
The technical problem to be solved by the utility model is to designing a kind of turbine blade of high reliablity, this is practical new
Type provides a kind of turbine blade to solve the above problems.
The utility model is achieved through the following technical solutions:
A kind of turbine blade, including blade body, the blade body include leaf top, blade profile, blade root, which is characterized in that institute
The junction for stating Ye Dingyu shroud is provided with the first reinforcing rib, and the surface of first reinforcing rib is inclined-plane, and the blade profile is cut tiltedly
One end of setting, blade profile is equipped with the second reinforcing rib, and second reinforcing rib is arranged straight down, the blade root and the fixed company of impeller
It connects, blade root is equipped with multiple continuous first recess portions and multiple continuous first protrusions, and impeller is equipped with multiple continuous second recess portions
With multiple continuous second protrusions, first recess portion is engaged with the second protrusion, and first protrusion is engaged with the second protrusion, institute
The first recess portion and the first protrusion for stating blade root are symmetric with middle line.
The design principle of the technical program are as follows: the junction of Ye Dingyu shroud is provided with the one of the first reinforcing rib and blade profile
It holds and is equipped with the rigidity that the second reinforcing rib purpose is increase blade, improvement vibration performance, the structure of the first reinforcing rib preferably 6~
The solid metal silk of 12mm, blade root are set as vertical tree type blade root, advantage be blade root and impeller contact loading end close to it is equal strong
Degree, bearing capacity increase, and intensity adaptability is good, convenient for disassembly and assembly.
Preferably, the thickness of the first reinforcing rib is greater than the thickness of the blade profile, and the position on the first reinforcing rib is further away from leaf
Root thickness is thicker, and the surface of first reinforcing rib and blade profile is continuous face.The thicker connection of thickness is more secured.
Preferably, blade profile is variable cross-section distorted shape.
Preferably, the opening angle at the first recess portion after the line of surface is 47 °, the opening folder after the first boss surface line
40 ° of angle.Bearing capacity is maximum when in the angle, and intensity adapts to best.
Preferably, the inclination angle of blade profile is 15 °.The power that blade is born when in the angle can maintain blade not damage.
Preferably, the second reinforcing rib is in rectangle.
Gap between preferred two neighboring blade body is steam flow channel, and the channel is smaller further away from blade root area.
The utility model has the following advantages and benefits:
1, a kind of turbine blade of the utility model, compared to the prior art, the technical program be provided with the first reinforcing rib,
Second reinforcing rib；Increase the rigidity of blade, improves vibration performance to increase reliability, reduce spoilage.
2, a kind of turbine blade of the utility model, compared with prior art, the technical program；Blade root is set as vertical tree type
Blade root, and the opening angle at the first recess portion after the line of surface is 47 °, it is 40 ° of opening angle after the first boss surface line, more
When secondary experiment shows to be set as the angle, bearing capacity is maximum, and intensity adapts to best.
3, the surface of a kind of turbine blade of the utility model, the first reinforcing rib and blade profile is continuous face；Be arranged
One reinforcing rib increases the rigidity of junction, can increase the continuity of steam flow in continuous face, reduces frictional force.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is enlarged drawing at the A of Fig. 1.
Label and corresponding parts title in attached drawing:
1- blade body, 11- leaf top, the first reinforcing rib of 110-, the second reinforcing rib of 111-, 12- blade profile, 13- blade root, 130-
One recess portion, the first protrusion 131-, 2- shroud, 3- impeller, the second recess portion of 300-, the second protrusion 301-.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figure 1 to Figure 2, a kind of turbine blade, including blade body 1, the blade body 1 include leaf top 11, blade profile
12, blade root 13, which is characterized in that the leaf top 11 and the junction of shroud 2 are provided with the first reinforcing rib 110, and described first adds
The surface of strengthening tendons 110 is inclined-plane, and the blade profile 12 cuts oblique setting, and one end of blade profile 12 is equipped with the second reinforcing rib 111, described second
Reinforcing rib 111 is arranged straight down, and the blade root 13 is fixedly connected with impeller 3, and blade root 13 is equipped with multiple continuous first recess portions
130 and multiple continuous first protrusions 131, impeller 3 is equipped with multiple continuous second recess portions 300 and multiple continuous second protrusions
301, first recess portion 130 is engaged with the second protrusion 301, and first protrusion 131 is engaged with the second recess portion 300, the leaf
First recess portion 130 of root 13 and the first protrusion 131 are symmetric with middle line 132.
The design principle of the technical program are as follows: leaf top 11 and the junction of shroud 2 are provided with the first reinforcing rib 110 and leaf
One end of type 12 is equipped with 111 purpose of the second reinforcing rib and is to increase the rigidity of blade, improves vibration performance, the first reinforcing rib 110
The structure preferably solid metal silk of 6~12mm, blade root 13 is set as vertical tree type blade root, and advantage is that blade root 13 connects with impeller 3
Touching loading end is close and equal strength, bearing capacity increase, and intensity adaptability is good, convenient for disassembly and assembly.
Preferably, the thickness of the first reinforcing rib 110 is greater than the thickness of the blade profile 12, the position on the first reinforcing rib 110
Thicker further away from 13 thickness of blade root, the surface of first reinforcing rib 110 and blade profile 12 is continuous face.The thicker connection of thickness
It is more secured.
Preferably, blade profile 12 is variable cross-section distorted shape.
Preferably, the opening angle at the first recess portion 130 after the line of surface is 47 °, after 131 surface line of the first protrusion
40 ° of opening angle.Bearing capacity is maximum when in the angle, and intensity adapts to best.
Preferably, the inclination angle of blade profile 12 is 15 °.The power that blade is born when in the angle can maintain blade not damage
It is bad.
Preferably, the second reinforcing rib 111 is in rectangle.
Compared to the prior art, the technical program is provided with the first reinforcing rib, the second reinforcing rib；Increase the rigidity of blade,
Improve vibration performance to increase reliability, reduces spoilage.Blade root is set as vertical tree type blade root, and surface connects at the first recess portion
Opening angle after line is 47 °, and 40 ° of opening angle after the first boss surface line, many experiments show to be set as the angle
When, bearing capacity is maximum, and intensity adapts to best.The surface of first reinforcing rib and blade profile is continuous face；The first reinforcing rib being arranged
The rigidity for increasing junction can increase the continuity of steam flow in continuous face, reduce frictional force.
Gap between preferred two neighboring blade body 1 is steam flow channel, and the channel is smaller further away from 13 area of blade root.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of turbine blade, including blade body (1), the blade body (1) includes leaf top (11), blade profile (12), blade root
(13), which is characterized in that the junction of the leaf top (11) and shroud (2) is provided with the first reinforcing rib (110), and described first adds
The surface of strengthening tendons (110) is inclined-plane, and the blade profile (12) is obliquely installed, and one end of blade profile (12) is equipped with the second reinforcing rib (111),
Second reinforcing rib (111) is arranged straight down, and the blade root (13) is fixedly connected with impeller (3), and blade root (13) is equipped with more
A continuous first recess portion (130) and multiple continuous first protrusions (131), impeller (3) are equipped with multiple continuous second recess portions
(300) it is engaged with multiple continuous second protrusions (301), first recess portion (130) with the second protrusion (301), described first
Protrusion (131) is engaged with the second recess portion (300), and the first recess portion (130) of the blade root (13) and the first protrusion (131) are with middle line
(132) it is symmetric.
2. a kind of turbine blade according to claim 1, which is characterized in that the thickness of first reinforcing rib (110)
Greater than the thickness of the blade profile (12), the position on the first reinforcing rib (110) is thicker further away from blade root (13) thickness, and described first
The surface of reinforcing rib (110) and blade profile (12) is continuous face.
3. a kind of turbine blade according to claim 1, which is characterized in that the blade profile (12) is variable cross-section twisted shape
Shape.
4. a kind of turbine blade according to claim 1, which is characterized in that surface connects at first recess portion (130)
Opening angle after line is 47 °, 40 ° of opening angle after the line of the first protrusion (131) surface.
5. a kind of turbine blade according to claim 1, which is characterized in that the inclination angle of the blade profile (12) is 15 °.
6. a kind of turbine blade according to claim 1, which is characterized in that second reinforcing rib (111) is in rectangle.
7. a kind of turbine blade according to claim 1, which is characterized in that between two neighboring blade body (1)
Gap is steam flow channel, and the channel is smaller further away from blade root (13) area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936251.0U CN209483430U (en) | 2018-11-22 | 2018-11-22 | A kind of turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936251.0U CN209483430U (en) | 2018-11-22 | 2018-11-22 | A kind of turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209483430U true CN209483430U (en) | 2019-10-11 |
Family
ID=68116436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821936251.0U Expired - Fee Related CN209483430U (en) | 2018-11-22 | 2018-11-22 | A kind of turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209483430U (en) |
-
2018
- 2018-11-22 CN CN201821936251.0U patent/CN209483430U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191011 Termination date: 20201122 |