CN109538306B - Turbine guider of thermal cracking prevention - Google Patents
Turbine guider of thermal cracking prevention Download PDFInfo
- Publication number
- CN109538306B CN109538306B CN201811519604.1A CN201811519604A CN109538306B CN 109538306 B CN109538306 B CN 109538306B CN 201811519604 A CN201811519604 A CN 201811519604A CN 109538306 B CN109538306 B CN 109538306B
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- Prior art keywords
- elastic
- cylindrical structure
- ring
- support frame
- grooves
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a turbine guider capable of preventing heat cracking, which comprises a body, a support frame and an elastic ring, wherein the body comprises an outer ring, blades and an inner ring, the support frame comprises a cylindrical structure and a horizontal connecting structure inside the cylindrical structure, the bottom of the cylindrical structure is provided with an elastic table extending outwards, the upper surface of the elastic table is provided with an axial stress relief groove, and a supporting stress relief groove is arranged at the connecting part of the horizontal connecting structure and the cylindrical structure; the two end surfaces of the inner ring are respectively an upstream positioning surface and a downstream positioning surface, and the support frame is inserted into the inner ring to enable the downstream positioning surface to be in close contact with the elastic table; the elastic ring is sleeved on the cylindrical structure, and the bottom end face of the elastic ring is in close contact with the upstream positioning face. According to the invention, through the combined structure of the inner ring, the support frame and the elastic ring, the axial stress of the turbine guider is transferred to the support frame, and the support frame is provided with the axial stress relief groove and the support stress relief groove, so that the stress requirement of the turbine guider is met.
Description
Technical Field
The invention belongs to the technical field of electromechanics, and particularly relates to a thermal crack prevention turbine guider.
Background
The turbine guider has the advantages of severe working environment, high temperature, large high-low temperature stress, and the function of supporting surrounding parts, so that heat cracks are easy to occur. According to the actual use condition, the part of the turbine guide device with the hot cracking is often the inner ring, and how to reduce the hot cracking fault of the turbine guide device and improve the reliability of the turbine guide device is the core technology of the design of the turbine guide device.
Disclosure of Invention
In view of this, the present invention is directed to provide a turbine guide that is resistant to thermal cracking, and reduces thermal stress and thermal cracking risk under the condition of satisfying the supporting stress.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a thermal cracking prevention turbine guider comprises a body, wherein the body comprises an outer ring, blades and an inner ring, and further comprises a support frame and an elastic ring, the support frame comprises a cylindrical structure and a horizontal connecting structure inside the cylindrical structure, the bottom of the cylindrical structure is provided with an elastic table extending outwards, the upper surface of the elastic table is provided with an axial stress relief groove, and a supporting stress relief groove is arranged at the connecting part of the horizontal connecting structure and the cylindrical structure;
the two end surfaces of the inner ring are respectively an upstream positioning surface and a downstream positioning surface, and the support frame is inserted into the inner ring to enable the downstream positioning surface to be in close contact with the elastic table; the elastic ring is sleeved on the cylindrical structure, and the end surface of the bottom of the elastic ring is in close contact with the upstream positioning surface; the support frame is fixedly connected with the elastic ring.
Furthermore, a plurality of upstream shrinkage grooves and a plurality of downstream shrinkage grooves are uniformly distributed on the inner ring, and the upstream shrinkage grooves and the downstream shrinkage grooves are staggered at a certain angle.
Furthermore, a plurality of grooves are formed in the inner side and the outer side of the elastic ring, the grooving positions are staggered relatively, through grooves are uniformly distributed in the inner side, and non-through grooves are uniformly distributed in the outer side.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, through the combined structure of the inner ring, the support frame and the elastic ring, the axial stress of the turbine guider is transferred to the support frame, and the support frame is provided with the axial stress relief groove and the support stress relief groove, so that the stress requirement of the turbine guider is met;
(2) the inner ring and the elastic ring are both provided with slotted structures for preventing thermal stress, and can independently bear radial deformation without forming stress influence on the support frame, thereby preventing heat cracking.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a thermal break resistant turbine nozzle according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a body according to an embodiment of the invention;
FIG. 3 is a cross-sectional left side view of a body according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a support according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an elastic ring according to an embodiment of the present invention;
FIG. 6 is a top view of an elastomeric ring according to an embodiment of the present invention;
fig. 7 is a left side view of an elastic ring according to an embodiment of the present invention.
Description of reference numerals:
1-body, 2-outer ring, 3-blade, 4-inner ring, 5-downstream contraction groove, 6-upstream contraction groove, 7-downstream positioning surface, 8-upstream positioning surface, 9-support frame, 10-elastic table, 11-axial destressing groove, 12-support destressing groove, 13-elastic ring, 14-welding line and 15-non-through groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A turbine guider for preventing thermal cracking is shown in figures 1 to 7 and comprises a body 1, wherein the body 1 comprises an outer ring 2, blades 3 and an inner ring 4 which are integrally and precisely cast; also comprises a supporting frame 9 and an elastic ring 13,
the supporting frame 9 comprises a cylindrical structure and a horizontal connecting structure inside the cylindrical structure, an elastic table 10 extending outwards is arranged at the bottom of the cylindrical structure, an axial stress relief groove 11 is formed in the upper surface of the elastic table 10, and a supporting stress relief groove 12 is formed in the connecting position of the horizontal connecting structure and the cylindrical structure;
the two end surfaces of the inner ring 4 are respectively an upstream positioning surface 8 and a downstream positioning surface 7, and the support frame 9 is inserted into the inner ring 4, so that the downstream positioning surface 7 is in close contact with the elastic table 10; the elastic ring 13 is sleeved on the cylindrical structure, and the end surface of the bottom of the elastic ring is tightly contacted with the upstream positioning surface 8; the supporting frame 9 is fixedly connected with the elastic ring 13.
The inner ring 4 is provided with 6 upstream contraction grooves 6 which are uniformly distributed and 6 downstream contraction grooves 5 which are uniformly distributed, and the positions of the upstream contraction grooves 6 and the positions of the downstream contraction grooves 5 are staggered by 30 degrees relatively.
The elastic ring 13 is a circular ring with a plurality of grooves on the inner side and the outer side, and the grooves are staggered relatively. The inner side is provided with 18 uniformly distributed through grooves, and the width of each groove is 3 mm. The outer side is provided with 18 uniformly distributed non-through grooves 15, and the width of each non-through groove is 3 mm.
The assembly process of the invention is as follows:
inserting the support frame 9 into the body 1 to enable the downstream positioning surface 7 to be in close contact with the elastic table 10, sleeving the elastic ring 13 on the inner ring 4 to enable the end surface of the elastic ring 13 to be in close contact with the upstream positioning surface 8, and finally welding the support frame 9 and the elastic ring 13 together, wherein the welding line 14 is arranged on the upper end surface of the support frame 9.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A turbine guider who prevents heat burst, includes body (1), body (1) includes outer lane (2), blade (3) and inner circle (4), its characterized in that: also comprises a supporting frame (9) and an elastic ring (13),
the supporting frame (9) comprises a cylindrical structure and a horizontal connecting structure inside the cylindrical structure, an elastic table (10) extending outwards is arranged at the bottom of the cylindrical structure, an axial stress-relieving groove (11) is formed in the upper surface of the elastic table (10), and a supporting stress-relieving groove (12) is formed in the connecting position of the horizontal connecting structure and the cylindrical structure;
the two end surfaces of the inner ring (4) are respectively an upstream positioning surface (8) and a downstream positioning surface (7), and the support frame (9) is inserted into the inner ring (4) to enable the downstream positioning surface (7) to be in close contact with the elastic table (10); the elastic ring (13) is sleeved on the cylindrical structure, and the end surface of the bottom of the elastic ring is tightly contacted with the upstream positioning surface (8); the support frame (9) is fixedly connected with the elastic ring (13).
2. The thermal crack prevention turbine guide of claim 1, wherein: the inner ring (4) is provided with a plurality of upstream contraction grooves (6) which are uniformly distributed and a plurality of downstream contraction grooves (5) which are uniformly distributed, and the positions of the upstream contraction grooves (6) and the positions of the downstream contraction grooves (5) are staggered relatively.
3. The thermal crack prevention turbine guide of claim 1, wherein: the inner side and the outer side of the elastic ring (13) are provided with a plurality of grooves, the grooving positions are staggered relatively, the inner side is provided with through grooves which are uniformly distributed, and the outer side is provided with non-through grooves which are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519604.1A CN109538306B (en) | 2018-12-12 | 2018-12-12 | Turbine guider of thermal cracking prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519604.1A CN109538306B (en) | 2018-12-12 | 2018-12-12 | Turbine guider of thermal cracking prevention |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538306A CN109538306A (en) | 2019-03-29 |
| CN109538306B true CN109538306B (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811519604.1A Active CN109538306B (en) | 2018-12-12 | 2018-12-12 | Turbine guider of thermal cracking prevention |
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| Country | Link |
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| CN (1) | CN109538306B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077281A (en) * | 2020-10-09 | 2020-12-15 | 马鞍山方圆动力科技有限公司 | Special processing method for preventing thermal cracking of vortex sheet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617115B (en) * | 2019-10-29 | 2021-11-02 | 北京动力机械研究所 | Turbine engine guide ring assembly produced by additive manufacturing mode |
| CN113352134A (en) * | 2021-07-12 | 2021-09-07 | 重庆江增船舶重工有限公司 | Manufacturing method of over-positioning type part |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120045356A1 (en) * | 2009-06-10 | 2012-02-23 | Atlas Copco Airpower | Rotor for a screw compressor |
| US20140205369A1 (en) * | 2013-01-21 | 2014-07-24 | Magna Powertrain Ag & Co. Kg | Joint design welding dissimilar materials |
| CN104242570A (en) * | 2014-09-22 | 2014-12-24 | 东方电气集团东方汽轮机有限公司 | Segmented device for rotor butt joint assembly and method for conducting rotor butt joint assembly with device |
| CN106837999A (en) * | 2017-01-16 | 2017-06-13 | 中国科学院长春光学精密机械与物理研究所 | A kind of C-shaped flexible bearing and its manufacture method |
-
2018
- 2018-12-12 CN CN201811519604.1A patent/CN109538306B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120045356A1 (en) * | 2009-06-10 | 2012-02-23 | Atlas Copco Airpower | Rotor for a screw compressor |
| US20140205369A1 (en) * | 2013-01-21 | 2014-07-24 | Magna Powertrain Ag & Co. Kg | Joint design welding dissimilar materials |
| CN104242570A (en) * | 2014-09-22 | 2014-12-24 | 东方电气集团东方汽轮机有限公司 | Segmented device for rotor butt joint assembly and method for conducting rotor butt joint assembly with device |
| CN106837999A (en) * | 2017-01-16 | 2017-06-13 | 中国科学院长春光学精密机械与物理研究所 | A kind of C-shaped flexible bearing and its manufacture method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077281A (en) * | 2020-10-09 | 2020-12-15 | 马鞍山方圆动力科技有限公司 | Special processing method for preventing thermal cracking of vortex sheet |
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| Publication number | Publication date |
|---|---|
| CN109538306A (en) | 2019-03-29 |
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