CN212177225U - Impeller suitable for 3MW power level air is turbine entad - Google Patents
Impeller suitable for 3MW power level air is turbine entad Download PDFInfo
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- CN212177225U CN212177225U CN202020721316.0U CN202020721316U CN212177225U CN 212177225 U CN212177225 U CN 212177225U CN 202020721316 U CN202020721316 U CN 202020721316U CN 212177225 U CN212177225 U CN 212177225U
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Abstract
The utility model discloses an impeller suitable for 3MW power level air is turbine entad, belong to turbine technical field, the defect of solving domestic no 3MW power level air entad turbine wheel is proposed, it includes rim plate and the even impeller blade of laying on the rim plate surface, and limited the entry radius R1 of impeller blade, the export root radius R2 of impeller blade, impeller blade's export top radius R3, the blade height Z1 of impeller blade entrance, impeller blade's axial length Z2, blade cornerite d theta, entry inclination alpha 1, export inclination alpha 2, the concrete numerical value of entry blade angle beta 1, and export blade angle beta 2's value variation range, along with section A-A to section C-C's section altitude variation. The utility model discloses an impeller aerodynamic efficiency is high, and aerodynamic loss is little, can effectively slow down the slope change intensity of streamline, improves the acting capacity, can be under the variable working condition safe high-efficient operation, has wide market prospect.
Description
The technical field is as follows:
the utility model belongs to the technical field of the impeller, concretely relates to impeller suitable for 3MW power level air centripetal turbine.
Background art:
the air Brayton cycle power generation system is a novel power generation device, can realize the heat-electricity conversion of air Brayton cycle, is clean and environment-friendly, and has wide application. The performance of the centripetal turbine is a key component of the air Brayton cycle device, the performance of the centripetal turbine plays a crucial role in the cycle device, and the impeller is a key component influencing the output power and the efficiency of the air centripetal turbine. At present, 3MW power level air centripetal turbine impeller products are still blank, so that the research and development of an impeller applied to a 3MW power level air centripetal turbine is a technical problem to be solved urgently.
The utility model has the following contents:
the utility model discloses a solve the internal defect that does not have 3MW power level air centripetal turbine wheel, provide an impeller suitable for 3MW power level air centripetal turbine, this impeller has the aerodynamic efficiency height, and intensity satisfies the check standard, can be under the variable operating mode condition safe high-efficient operation.
The utility model discloses a technical scheme lie in: an impeller of a 3MW power grade air centripetal turbine comprises a wheel disc provided with a central hole and impeller blades uniformly and circumferentially distributed on the surface of the wheel disc, an air passage is formed between every two adjacent impeller blades, the wheel disc and the impeller blades are of an integrated structure, the linear shape of each impeller blade is a variable cross-section blade, the cross-section area of each variable cross-section blade is gradually reduced from the root to the top, each impeller blade comprises a blade root and a blade top, the radius R1 of the inlet of each impeller blade is 276.5mm, the radius R2 of the outlet root of each impeller blade is 50mm, and the radius R3 of the outlet top of each impeller blade is 211.5 mm; the height Z1 of the impeller blade at the inlet is 67.5mm, and the axial length Z2 of the impeller blade is 165 mm; an included angle of two axial planes formed by the inlet edge of the impeller blade, the outlet edge of the impeller blade and the axis Z is called a blade wrap angle d theta, the blade wrap angle d theta is 19.52 degrees, included angles of the inlet area of the impeller blade and the outlet area of the impeller blade in the meridian plane molded line and the axial direction are an inlet inclination angle alpha 1 and an outlet inclination angle alpha 2 respectively, the inlet inclination angle alpha 1 is 90 degrees, and the outlet inclination angle alpha 2 is 0 degree; an included angle between an inlet area of the impeller blade and the tangential direction of a circumferential line of an air inlet side of the wheel disc is an inlet blade angle beta 1, and the inlet blade angle beta 1 is 90 degrees; the included angle between the area of the air outlet side of the impeller blade and the tangential direction of the circumferential line of the air outlet side of the wheel disc is an outlet blade angle beta 2, the blade root section of the impeller blade is defined as a section A-A, the 50% blade height section is defined as a section B-B, the blade top section is defined as a section C-C, the change of the section height from the section A-A to the section C-C is followed, and the value change range of the outlet blade angle beta 2 is 67-30.85 degrees.
Preferably, the outlet vane angle β 21 at said section a-a is 67 °.
Preferably, the outlet vane angle β 22 at said section B-B is 47.5 °.
Preferably, the outlet vane angle β 23 at said section C-C is 30.85 °.
Preferably, the number of the impeller blades is 13.
The utility model has the advantages that:
the utility model discloses a one-dimensional to full three-dimensional advanced impeller design technique, make the utility model discloses the mechanical properties of impeller improves to some extent, aerodynamic loss reduces to some extent, not only compensatied the blank of present internal 3MW power level air centripetal turbine wheel product, wide market prospect has, and this impeller blade's profile is through calculating repeatedly, impeller blade intensity satisfies the standard of checking, can be under the variable operating mode safe high-efficient operation, the slope of its pressure surface and suction surface and camber laminating aerodynamic performance can maximum raise the efficiency to reduce impeller runner's shock loss, reduce vibration and noise, and will the utility model discloses an behind the impeller application centripetal turbine, this turbine overall aerodynamic efficiency can reach 90.07%.
Description of the drawings:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of an impeller blade;
FIG. 3 is a schematic meridional profile of an impeller blade;
wherein: 1 wheel disc and 2 impeller blades.
The specific implementation mode is as follows:
as shown in fig. 1 to 3, the utility model relates to an impeller of 3MW power level air centripetal turbine, which comprises a wheel disc 1 with a central hole and impeller blades 2 uniformly arranged on the surface of the wheel disc 1, so that an air passage is formed between every two adjacent impeller blades 2, the inlet radius R1 of the impeller blades 2 is 276.5mm, the outlet root radius R2 of the impeller blades 2 is 50mm, and the outlet top radius R3 of the impeller blades 2 is 211.5 mm; the height Z1 of the impeller blade 2 at the inlet is 67.5mm, and the axial length Z2 of the impeller blade 2 is 165 mm;
the linear type of the impeller blade 2 is a variable cross-section blade, the sectional area of the variable cross-section blade is gradually reduced from the root to the top, the blade profile curve of each cross section is a space curve, and the impeller blade 2 comprises a blade root and a blade top.
An included angle between two axial planes formed by the inlet edge of the impeller blade 2, the outlet edge of the impeller blade 2 and the axis Z is called a blade wrap angle d theta, and the wrap angle d theta is 19.52 degrees;
an included angle between the meridian plane molded line and the axial direction of an inlet area of the impeller blade 2 is an inlet inclination angle alpha 1, and the inlet inclination angle alpha 1 is 90 degrees; an included angle between the meridian plane molded line and the axial direction of an outlet region of the impeller blade 2 is an outlet inclination angle alpha 2, and the outlet inclination angle alpha 2 is 0 degree; an included angle between an inlet area of the impeller blade 2 and the tangential direction of the circumferential line of the air inlet side of the wheel disc 1 is an inlet blade angle beta 1, and the inlet blade angle beta 1 is 90 degrees; the included angle between the area of the air outlet side of the impeller blade 2 and the tangential direction of the circumferential line of the air outlet side of the wheel disc 1 is an outlet blade angle beta 2, the blade root section of the impeller blade 2 is defined as a section A-A, the 50% blade height section is defined as a section B-B, the blade tip section is defined as a section C-C, and the variation range of the outlet blade angle beta 2 is 67-30.85 degrees along with the variation of the section heights from the section A-A to the section C-C.
Further, the outlet blade angle β 21 at said section a-a is 67 ° and the inlet blade angle β 1 is 90 °.
Further, the outlet blade angle β 22 at the section B-B is 47.5 ° and the inlet blade angle β 1 is 90 °.
Further, the outlet blade angle β 23 at the section C-C is 30.85 ° and the inlet blade angle β 1 is 90 °.
Further, the number of the impeller blades 2 is selected to be 13 in consideration of the factors such as the strength of the blades, the flowing uniformity of the working medium and the friction loss, and the blades are uniformly distributed in the whole circumferential direction by taking the Z axis as a rotating shaft.
The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An impeller suitable for a 3MW power level air centripetal turbine comprises a wheel disc (1) provided with a center hole and impeller blades (2) uniformly and circumferentially arranged on the surface of the wheel disc (1), an air passage is formed between every two adjacent impeller blades (2), the wheel disc (1) and the impeller blades (2) are of an integrated structure, the linear type of the impeller blades (2) is a variable cross-section blade, the cross-section area of the variable cross-section blade is gradually reduced from the root to the top, the impeller is characterized in that the impeller blades (2) comprise a blade root and a blade top,
the radius R1 of the inlet of the impeller blade (2) is 276.5mm, the radius R2 of the outlet root of the impeller blade (2) is 50mm, and the radius R3 of the outlet top of the impeller blade (2) is 211.5 mm; the height Z1 of the inlet blade of the impeller blade (2) is 67.5mm, and the axial length Z2 of the impeller blade (2) is 165 mm; the included angle of two axial planes formed by the inlet edge of the impeller blade (2), the outlet edge of the impeller blade (2) and the axis Z is called a blade wrap angle d theta, the blade wrap angle d theta is 19.52 degrees, the included angles of the inlet area of the impeller blade (2) and the outlet area of the impeller blade (2) in the meridian plane molded line and the axial direction are respectively an inlet inclination angle alpha 1 and an outlet inclination angle alpha 2, the inlet inclination angle alpha 1 is 90 degrees, and the outlet inclination angle alpha 2 is 0 degree; an included angle between an inlet area of the impeller blade (2) and the tangential direction of the circumferential line of the air inlet side of the wheel disc (1) is an inlet blade angle beta 1, and the inlet blade angle beta 1 is 90 degrees; the included angle between the gas outlet side area of the impeller blade (2) and the tangential direction of the circumferential line of the gas outlet side of the wheel disc (1) is an outlet blade angle beta 2, the blade root section of the impeller blade (2) is defined as a section A-A, the 50% blade height section is defined as a section B-B, the blade tip section is defined as a section C-C, the change of the section height from the section A-A to the section C-C is followed, and the value change range of the outlet blade angle beta 2 is 67-30.85 degrees.
2. An impeller suitable for use in a 3MW power class air centripetal turbine, according to claim 1, wherein: the outlet vane angle β 21 at said section a-a is 67 °.
3. An impeller suitable for use in a 3MW power class air centripetal turbine, according to claim 1, wherein: the outlet vane angle β 22 at the section B-B is 47.5 °.
4. An impeller suitable for use in a 3MW power class air centripetal turbine, according to claim 1, wherein: the outlet vane angle β 23 at the section C-C is 30.85 °.
5. An impeller suitable for use in a 3MW power class air centripetal turbine according to any one of claims 1 to 4, wherein: the number of the impeller blades (2) is 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020721316.0U CN212177225U (en) | 2020-05-06 | 2020-05-06 | Impeller suitable for 3MW power level air is turbine entad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020721316.0U CN212177225U (en) | 2020-05-06 | 2020-05-06 | Impeller suitable for 3MW power level air is turbine entad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212177225U true CN212177225U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020721316.0U Active CN212177225U (en) | 2020-05-06 | 2020-05-06 | Impeller suitable for 3MW power level air is turbine entad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177225U (en) |
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2020
- 2020-05-06 CN CN202020721316.0U patent/CN212177225U/en active Active
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