CN214304518U - Closed type medium-flow high-pressure three-dimensional flow impeller for coal pulverizing and discharging fan of iron works - Google Patents
Closed type medium-flow high-pressure three-dimensional flow impeller for coal pulverizing and discharging fan of iron works Download PDFInfo
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- CN214304518U CN214304518U CN202120379778.3U CN202120379778U CN214304518U CN 214304518 U CN214304518 U CN 214304518U CN 202120379778 U CN202120379778 U CN 202120379778U CN 214304518 U CN214304518 U CN 214304518U
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Abstract
The utility model discloses a high pressure three-dimensional flow impeller of flow in closed for coal fan is arranged in ironworks powder process, including front bezel and back plate, the middle part of back plate runs through there is the main shaft to the fixed surface of main shaft is connected with the reel, and the reel sets up in the front side of back plate, the side surface of reel is fixed with the water conservancy diversion awl dish to the fixed surface of water conservancy diversion awl dish is connected with three-dimensional flow blade, three-dimensional flow blade is provided with sixteen altogether, and its even symmetrical distribution in the surface of water conservancy diversion awl dish, the front side of three-dimensional flow blade is provided with the front bezel, three-dimensional flow blade adopts inhomogeneous B spline curved surface molding technique, comprises two space molded lines of blade root molded line and leaf vertex molded line, the utility model relates to a centrifugal fan technical field. This medium flow high pressure ternary flow impeller in closed has solved current medium flow high pressure centrifugal fan operation energy consumption in the closed, the big problem of noise.
Description
Technical Field
The utility model relates to a centrifugal fan technical field specifically is a medium flow high pressure three-dimensional flow impeller of closed for ironworks powder process coal discharge fan.
Background
The medium-flow high-pressure centrifugal fan is widely applied to large-scale power consumption industries such as steel, building materials, chemical engineering, power plants and the like, the representative medium-flow high-pressure centrifugal fans are 6-29, 6-31, 6-35, 6-39, 7-28 and the like, and the fan impellers are all designed in a binary blade type.
The internal flow of the centrifugal ventilator is complex viscous, three-dimensional and abnormal rotational flow, a complex vortex system structure exists, and complex flow phenomena such as boundary layer separation, backflow, jet-wake and the like and mutual motion effects of the complex flow phenomena are possibly accompanied, so that the current type of the centrifugal ventilator has the defects of low operation efficiency, high noise and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a high pressure three-dimensional flow impeller of medium flow in closed for iron works powder process coal discharge fan has solved current closed medium flow high pressure centrifugal fan operation energy consumption height, the big problem of noise.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a high pressure three-dimensional flow impeller of medium flow of closed type for coal fan is arranged in ironworks powder process, includes front bezel and back dish, the middle part of back dish is run through there is the main shaft to the fixed surface of main shaft is connected with the reel, and the reel sets up in the front side of back dish, the side surface of reel is fixed with the water conservancy diversion awl dish to the fixed surface of water conservancy diversion awl dish is connected with three-dimensional flow blade, three-dimensional flow blade is provided with sixteen altogether, and its even symmetrical distribution in the surface of water conservancy diversion awl dish, three-dimensional flow blade's front side is provided with the front bezel, three-dimensional flow blade adopts inhomogeneous B spline surface molding technique, comprises two space molded lines of blade root molded line and blade tip molded line.
Preferably: the inlet angle of the three-dimensional flow blade is 40-50 degrees, and the outlet angle of the three-dimensional flow blade is 35-40 degrees.
Preferably: the size of the inner diameter of the inlet of the three-dimensional flow blade is 508 mm, the outer diameter of the inlet of the three-dimensional flow blade is 1900 mm, and the inner diameter of the outlet of the three-dimensional flow blade is 180 mm.
Preferably: the inlet diameter of the front disc is 988 mm, the front disc consists of two circular arc sections and a straight line section, and the radiuses of the two circular arcs are 230 mm and 2800 mm respectively.
Preferably: the flow guide conical disc consists of a straight line section and a circular arc section, and the radius of the circular arc is 150 mm.
Preferably: the rear disc adopts the design of straightway and the outer diameter thereof is 1930 mm, and the rear disc and the front disc form a meridian flow channel surface.
Advantageous effects
The utility model provides a closed medium flow high pressure three-dimensional flow impeller for coal discharge fan for powder process of iron works. The method has the following beneficial effects:
(1) this medium flow high pressure ternary flow impeller in closed, the utility model designs a ternary flow impeller, its entry erection angle equals with the air current angle here during ternary distortion blade design, and the air current gets into the impeller with zero attack angle, has consequently obtained better blade surface load and has distributed, therefore has better flow characteristic, and the ternary flow impeller according to this patent design has better performance, and the operation energy consumption is lower, and the noise is also littleer.
(2) This closed medium flow high pressure three-dimensional flow impeller, the configuration rule of the ternary distortion blade in the utility model can obtain the optimal blade surface velocity distribution, therefore guaranteed reasonable load distribution, the blade leading edge can be stretched forward at will, makes the blade extension, and the load gradient diminishes, and surface velocity reduces, is favorable to the mobile improvement of impeller.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side cross-sectional view of the present invention;
fig. 3 is a schematic structural diagram of the three-dimensional flow blade of the present invention.
In the figure: the three-dimensional flow guide vane comprises a front disc 1, three-dimensional flow vanes 2, a flow guide conical disc 3, a rear disc 4, a shaft disc 5, a main shaft 6, a blade root molded line 7 and a blade tip molded line 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a high pressure three-dimensional flow impeller of medium flow of closed type for coal-discharging fan of iron works powder process, including front bezel 1 and back dish 4, main shaft 6 has been run through at the middle part of back dish 4, and the fixed surface of main shaft 6 is connected with reel 5, and reel 5 sets up in the front side of back dish 4, the side surface of reel 5 is fixed with water conservancy diversion conical disk 3, and the fixed surface of water conservancy diversion conical disk 3 is connected with three-dimensional flow blade 2, three-dimensional flow blade 2 is provided with sixteen altogether, and its even symmetrical distribution in the surface of water conservancy diversion conical disk 3, the front side of three-dimensional flow blade 2 is provided with front bezel 1, three-dimensional flow blade 2 adopts inhomogeneous B spline surface molding technique, constitute by two space molded lines of blade root molded lines 7 and blade tip molded lines 8.
Further: the inlet angle of the three-dimensional flow blade 2 is between 40 and 50 degrees, and the outlet angle of the three-dimensional flow blade 2 is between 35 and 40 degrees.
Further: the size of the inner diameter of the inlet of the three-dimensional flow blade 2 is 508 mm, the outer diameter of the inlet is 1900 mm, and the inner diameter of the outlet of the three-dimensional flow blade 2 is 180 mm.
Further: the inlet diameter of the front disc 1 is 988 mm, the front disc 1 consists of two circular arc sections and a straight line section, and the radii of the two circular arcs are 230 mm and 2800 mm respectively.
Further: the guide cone disc 3 consists of a straight line section and a circular arc section, and the radius of the circular arc is 150 mm.
Further: the rear disc 4 is designed by adopting a straight line segment, the outer diameter of the rear disc is 1930 mm, and the rear disc 4 and the front disc 1 form a meridian flow passage surface.
The first embodiment; in the design of the fan impeller, whether the surface speed distribution of the blades reasonably and directly influences the flowing performance of the impeller, the speed is generally expected to be relatively uniformly changed, an overlarge local speed gradient is prevented, so that the flowing loss is reduced, the influence of the blade inlet airflow attack angle on the surface load distribution of the blades is large, the three-dimensional flow impeller designed by the utility model has the advantages that the inlet installation angle is equal to the airflow angle at the position when the three-dimensional twisted blades are designed, and the airflow enters the impeller at the zero attack angle, so that the good surface load distribution of the blades is obtained.
Example two; the blade shape also influences the surface load distribution, the configuration rule of the ternary twisted blade in the utility model can obtain the optimal blade surface speed distribution, thereby ensuring the reasonable load distribution, generally speaking, the front edge of the blade extends forwards, the blade can be lengthened, the load gradient is reduced, the surface speed is reduced, and the improvement of the fluidity of the impeller is facilitated.
In conclusion; the three-element impeller in the patent has the advantages that the blade shape can be determined according to the flow requirement, the blade inlet can be designed to be air inlet at a zero attack angle, the obtained surface load distribution of the blades is often uniform, the three-element impeller has better flow characteristics, the three-element impeller designed according to the patent has better performance, the operation energy consumption is lower, and the noise is smaller.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an iron works powder process is arranged high pressure ternary flow impeller of flow of medium flow in closed for coal-discharging fan, includes preceding dish (1) and back plate (4), its characterized in that: the utility model discloses a three-dimensional flow machine, including back dish (4), the middle part of back dish (4) runs through there is main shaft (6) to the fixed surface of main shaft (6) is connected with reel (5), and reel (5) set up in the front side of back dish (4), the side surface of reel (5) is fixed with water conservancy diversion conical disk (3), and the fixed surface of water conservancy diversion conical disk (3) is connected with three-dimensional flow blade (2), three-dimensional flow blade (2) are provided with sixteen altogether, and its even symmetrical distribution in the surface of water conservancy diversion conical disk (3), the front side of three-dimensional flow blade (2) is provided with front disc (1), three-dimensional flow blade (2) adopt inhomogeneous B spline surface modeling technique, constitute by two space molded lines of blade root molded lines (7) and leaf top molded lines (8).
2. The closed medium-flow high-pressure three-dimensional flow impeller for the coal pulverizing and discharging fan of the iron works according to claim 1, wherein: the inlet angle of the three-dimensional flow blade (2) is 40-50 degrees, and the outlet angle of the three-dimensional flow blade (2) is 35-40 degrees.
3. The closed medium-flow high-pressure three-dimensional flow impeller for the coal pulverizing and discharging fan of the iron works according to claim 1, wherein: the size of the inner diameter of the inlet of the three-dimensional flow blade (2) is 508 mm, the outer diameter of the inlet of the three-dimensional flow blade is 1900 mm, and the inner diameter of the outlet of the three-dimensional flow blade (2) is 180 mm.
4. The closed medium-flow high-pressure three-dimensional flow impeller for the coal pulverizing and discharging fan of the iron works according to claim 1, wherein: the inlet diameter of the front disc (1) is 988 mm, the front disc (1) consists of two circular arc sections and a straight line section, and the radiuses of the two circular arcs are 230 mm and 2800 mm respectively.
5. The closed medium-flow high-pressure three-dimensional flow impeller for the coal pulverizing and discharging fan of the iron works according to claim 1, wherein: the flow guide conical disc (3) consists of a straight line section and a circular arc section, and the radius of the circular arc is 150 mm.
6. The closed medium-flow high-pressure three-dimensional flow impeller for the coal pulverizing and discharging fan of the iron works according to claim 1, wherein: the rear disc (4) is designed by adopting a straight line segment, the outer diameter of the rear disc is 1930 mm, and the rear disc (4) and the front disc (1) form a meridian flow channel surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120379778.3U CN214304518U (en) | 2021-02-20 | 2021-02-20 | Closed type medium-flow high-pressure three-dimensional flow impeller for coal pulverizing and discharging fan of iron works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120379778.3U CN214304518U (en) | 2021-02-20 | 2021-02-20 | Closed type medium-flow high-pressure three-dimensional flow impeller for coal pulverizing and discharging fan of iron works |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214304518U true CN214304518U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120379778.3U Expired - Fee Related CN214304518U (en) | 2021-02-20 | 2021-02-20 | Closed type medium-flow high-pressure three-dimensional flow impeller for coal pulverizing and discharging fan of iron works |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214304518U (en) |
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2021
- 2021-02-20 CN CN202120379778.3U patent/CN214304518U/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: 20210928 |