CN112983715A - Large-scale impulse turbine runner of subdivision manufacturing - Google Patents
Large-scale impulse turbine runner of subdivision manufacturing Download PDFInfo
- Publication number
- CN112983715A CN112983715A CN202110392102.2A CN202110392102A CN112983715A CN 112983715 A CN112983715 A CN 112983715A CN 202110392102 A CN202110392102 A CN 202110392102A CN 112983715 A CN112983715 A CN 112983715A
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- China
- Prior art keywords
- bucket
- runner
- split
- rotating wheel
- lobe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/02—Buckets; Bucket-carrying rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a large impulse turbine runner manufactured in a split mode, according to the structural characteristics of the impulse turbine runner, the large impulse turbine runner is designed and manufactured in a split mode under the conditions that the forging capacity of a runner blank material and road transportation conditions are met, and the large impulse turbine runner is transported to a hydropower station in a single-split mode and is combined and processed into a whole in the hydropower station; the number of the rotor wheel segments is two, three or four, so that the problems of the forging capacity of the blank material of the rotor wheel with the super-large diameter and the limitation of road transportation of the large-size impact rotor wheel are solved; the rotor wheel valving surface is positioned between the end surface reference surfaces of two adjacent buckets of the rotor wheel, and the valving surface avoids the positive pressure surface of the rotor wheel buckets, so that the rotor wheel valving surface is far away from a high stress area during the operation of the rotor wheel, and the service life of valving is prolonged; the runner bucket positioned on the split surface of the runner is manufactured in a split mode and is divided into the bucket and the bucket root, the bucket is independently processed in a manufacturing plant in a numerical control mode, the bucket and the bucket root are welded into a whole in a construction site, the machining and manufacturing difficulty of the hydropower station construction site is reduced, and the production benefit is improved.
Description
Technical Field
The invention relates to the field of impulse water turbines, in particular to a large impulse water turbine runner manufactured in a split mode.
Background
With the demand of economic development in China, the demand on energy is continuously increased, and high-water-head and high-capacity impact type hydroelectric generating sets in hydroelectric development projects are more and more. The impulse runner as the core component of impulse turbine benefits from the development of current fluid mechanics and mechanical digital simulation tools, and the design of the impulse runner makes great progress in principle and design technology. However, with the design and manufacture of large-sized impact type rotating wheels, on one hand, the integral forging of blank materials with ultra-large diameters cannot be realized due to the restriction of the forging size of martensite forged steel which is a material for manufacturing the rotating wheels; on the other hand, when the design size of the runner exceeds the national road transportation width, the impact runner manufactured by a manufacturing factory cannot be transported integrally to a hydropower station for installation. Therefore, a split structure is considered to be adopted in the design and manufacture of the large-sized impulse turbine runner, the runner is split and designed in a manufacturing factory, a material blank is split and forged, split machining and manufacturing are carried out, split transportation is carried out to a hydropower station, then the whole body is manufactured and assembled in the hydropower station, and the problems that the whole body of the large-sized impulse turbine runner cannot be forged and the transportation of the road transportation capacity to the whole body of the large-sized impulse turbine runner is limited are solved.
Disclosure of Invention
In view of the above, the present invention is a split-manufactured large impulse turbine runner, which is designed and manufactured by splitting according to the structural characteristics of the impulse turbine runner under the conditions of satisfying the forging capability of the runner blank material and road transportation, and is transported to a hydropower station in a single-split manner and assembled and processed into a whole at the hydropower station. The invention is realized by the following technical scheme:
1) the rotating wheel has two segments, the first segment surface of the rotating wheel is positioned in the area between the first reference surface and the second reference surface of the end surfaces of two adjacent buckets of the rotating wheel, the first segment surface of the rotating wheel avoids the positive pressure surface of the buckets, the second segment surface of the rotating wheel is positioned in the area between the third reference surface and the fourth reference surface of the end surfaces of the two adjacent buckets of the rotating wheel, and the second segment surface of the rotating wheel avoids the positive pressure surface of the buckets;
2) the runner is divided into a first single lobe of the runner and a second single lobe of the runner by a first split surface of the runner and a second split surface of the runner, a runner bucket positioned on the first split surface of the runner and the second split surface of the runner is manufactured in a split manner and is divided into a first bucket end part, a second bucket end part, a first bucket root part and a second bucket root part, the first bucket end part and the second bucket end part are independently processed in a manufacturing factory in a numerical control manner, and the first bucket root part and the second bucket root part are processed by numerical control after the first single lobe of the runner and the second single lobe of the runner are welded;
3) the first single lobe of the rotating wheel, the second single lobe of the rotating wheel, the end part of the first water bucket and the end part of the second water bucket are transported to a hydropower station site by a water turbine product manufacturing plant;
4) the first single lobe of the rotating wheel and the second single lobe of the rotating wheel are welded into a whole in the hydropower station;
5) processing the root of the first water bucket and the root of the second water bucket: after the first single-lobe of the rotating wheel and the second single-lobe of the rotating wheel are combined and welded, the space curved surface molded lines of the root part of the first water bucket and the root part of the second water bucket are respectively processed in a numerical control processing mode;
6) the first water bucket end part and the second water bucket end part are assembled and welded: and the first water bucket end part and the second water bucket end part are sequentially assembled to the first water bucket root part and the second water bucket root part, and welding seams of the first water bucket end part and the second water bucket end part with the first water bucket root part and the second water bucket root part is completed by adopting a welding process method.
In the split large impulse turbine runner, a first split surface of the runner passes through a positive pressure surface of a bucket; the second split surface of the rotating wheel passes through the positive pressure surface of the water bucket.
In the large impulse turbine runner manufactured by splitting, the number of the split runner can be three or four.
Technical effects
The invention relates to a split-manufactured large impulse turbine runner, which is designed and manufactured in a split manner under the condition of meeting the forging capacity of runner blank materials and road transportation conditions according to the structural characteristics of the impulse turbine runner, is transported to a hydropower station in a single split manner and is combined and processed into a whole at the hydropower station, and has the following technical effects:
1) the number of the rotor wheel segments is two, three or four, so that the problems of the forging capacity of the martensite forged steel of the blank material of the rotor wheel with the super-large diameter and the limitation of road transportation of the large-size impact rotor wheel are solved;
2) the rotary wheel split surface is positioned between the end surface reference surfaces of two adjacent buckets of the rotary wheel, and the rotary wheel split combination surface avoids the positive pressure surface of the rotary wheel buckets, so that the rotary wheel split surface is far away from a high stress area under the operation of the rotary wheel buckets, and the service life of the rotary wheel split surface is prolonged after the split surface is combined and connected;
3) the runner water bucket positioned on the split surface of the runner is manufactured in a split mode and is divided into a water bucket end part and a water bucket root part, and all the water buckets and the water bucket end parts are independently machined and finished in a numerical control mode in a manufacturing factory, so that the machining and manufacturing difficulty of a hydropower station building site is reduced, and the production benefit is improved.
Drawings
Fig. 1 is a schematic view of a rotor split surface of an impulse turbine.
Fig. 2 is a schematic view of a split structure of the impulse turbine.
Fig. 3 is a schematic view of a split combination structure of the impulse turbine.
FIG. 4 is a schematic view of the overall structure of the impulse wheel.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, a first split surface 1 and a second split surface 5 of the large impact runner are processed and manufactured in two halves in a manufacturing and processing factory, the first split surface 1 of the runner is located in a region between the edge end surfaces of two adjacent buckets of the runner and a second reference surface 3, the split surfaces avoid a positive pressure surface 4 of the buckets, the second split surface 5 of the runner is located in a region between a third reference surface 6 and a fourth reference surface 7 of the edge end surfaces of the two adjacent buckets of the runner, and the split surfaces need to avoid the positive pressure surface 4 of the buckets;
as shown in fig. 2, the first rotor disc valving surface 1 and the second rotor disc valving surface 5 divide the rotor into a rotor disc single-lobe 13 and a rotor disc single-lobe 14, the rotor buckets located on the first rotor disc valving surface 1 and the second rotor disc valving surface 5 are manufactured separately and are divided into a first bucket end 9, a second bucket end 11, a first bucket root 10 and a second bucket root 12, the first bucket end 9 and the second bucket end 11 are individually processed in a manufacturing factory in a numerical control manner, and the first bucket root 10 and the second bucket root 12 are processed in a numerical control manner after the first rotor disc valving 13 and the second rotor disc valving surface 14 are welded; the first single-lobe 13 of the rotating wheel, the second single-lobe 14 of the rotating wheel, the first bucket end part 9 and the second bucket end part 11 are transported to a hydropower station site by a water turbine product manufacturing plant;
as shown in fig. 3, the first single lobe 13 of the rotating wheel and the second single lobe of the rotating wheel are welded into a whole in a hydropower station, and after the first single lobe 13 of the rotating wheel and the second single lobe 14 of the rotating wheel are welded in a combined manner, the spatial curved surface profiles of the first bucket root 10 and the second bucket root 12 are processed in a numerical control processing manner;
as shown in fig. 4, the bucket 9 and the bucket 11 are sequentially assembled on the bucket root 10 and the bucket root 12, and the welding of the bucket 9 and the bucket 11 with the bucket root 10 and the bucket root 12 is completed by adopting a welding method.
Further, the rotor may be divided into three or four segments to be manufactured according to the above method. The specific splitting principle is determined according to the transportation condition from a water turbine product manufacturing plant to a hydropower station site, and under the general conditions that the product size is larger, the roadbed width is narrower, and the road bearing capacity is lower, the number of the split parts required by the product is more.
Further, the split surface position can also pass through the positive pressure surface of the water bucket.
The present invention is illustrative only and not intended to limit the scope of the invention, which is to be protected by the accompanying claims, and it will be understood by those skilled in the art that various changes may be made in the details without departing from the spirit and scope of the invention.
Claims (3)
1. A large impulse turbine runner manufactured by sectioning is characterized by comprising the following steps:
1) the split number of the rotating wheel is two, the first split surface (1) of the rotating wheel is positioned in the area between the first reference surface (2) and the second reference surface (3) of the edge end surfaces of two adjacent buckets of the rotating wheel, the first split surface (1) of the rotating wheel avoids the positive pressure surface (4) of the buckets, the second split surface (5) of the rotating wheel is positioned in the area between the third reference surface (6) and the fourth reference surface (7) of the edge end surfaces of two adjacent buckets of the rotating wheel, and the second split surface (5) of the rotating wheel avoids the positive pressure surface (4) of the buckets;
2) the runner is divided into a first runner single lobe (13) and a second runner single lobe (14) by a first runner split surface (1) and a second runner split surface (5), a runner bucket positioned on the first runner split surface (1) and the second runner split surface (5) is manufactured in a split mode and divided into a first bucket end part (9), a second bucket end part (11), a first bucket root part (10) and a second bucket root part (12), the first bucket end part (9) and the second bucket end part (11) are independently processed in a numerical control mode in a manufacturing factory, and the first bucket root part (10) and the second bucket root part (12) are processed in a numerical control mode after the first runner single lobe (13) and the second runner single lobe (14) of the runner are welded;
3) a first single-lobe (13) of the rotating wheel comprising a first bucket root (10), a second single-lobe (14) of the rotating wheel comprising a second bucket root (12), a first bucket end (9) and a second bucket end (11) are transported to a hydropower station site by a water turbine product manufacturing plant;
4) the first single lobe (13) of the rotating wheel and the second single lobe (14) of the rotating wheel are welded into a whole in the hydropower station;
5) after the first single-lobe (13) of the rotating wheel and the second single-lobe (14) of the rotating wheel are combined and welded, the spatial curved surface molded lines of the root part (10) of the first water bucket and the root part (12) of the second water bucket are respectively machined in a numerical control machining mode;
6) the first water bucket end part (9) and the second water bucket end part (11) are assembled and welded: and the first water bucket end part (9) and the second water bucket end part (11) are sequentially assembled on the first water bucket root part (10) and the second water bucket root part (12), and the welding of the first water bucket end part (9) and the second water bucket end part (11) and the welding seams of the first water bucket root part (10) and the second water bucket root part (12) are completed by adopting a welding process method.
2. A split-fabricated large impulse turbine runner according to claim 1, wherein: the first split surface (1) of the rotating wheel passes through the positive pressure surface (4) of the water bucket; the second valve-dividing surface (5) of the rotating wheel passes through the positive pressure surface (4) of the water bucket.
3. A split-fabricated large impulse turbine runner according to claim 1, wherein: the number of the rotating wheel split can also be three or four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392102.2A CN112983715A (en) | 2021-04-13 | 2021-04-13 | Large-scale impulse turbine runner of subdivision manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392102.2A CN112983715A (en) | 2021-04-13 | 2021-04-13 | Large-scale impulse turbine runner of subdivision manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983715A true CN112983715A (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110392102.2A Pending CN112983715A (en) | 2021-04-13 | 2021-04-13 | Large-scale impulse turbine runner of subdivision manufacturing |
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| Country | Link |
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| CN (1) | CN112983715A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113868796A (en) * | 2021-09-28 | 2021-12-31 | 哈尔滨电机厂有限责任公司 | Impulse turbine bucket root transition self-adaption method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0843092A1 (en) * | 1996-11-13 | 1998-05-20 | Turbinen- und Kraftwerksanlagenbau EFG Energieforschungs- und Entwicklungsgesellschaft m.b.H. & Co KG | Pretensioning Peltonwheel |
| US20100254814A1 (en) * | 2007-10-30 | 2010-10-07 | Alstom Hydro France | Pelton turbine wheel, method for making same and pelton turbine including such wheel |
| CN104625650A (en) * | 2015-01-21 | 2015-05-20 | 重庆科技学院 | Manufacturing technology for runner of impulse turbine |
| CN110449832A (en) * | 2019-07-16 | 2019-11-15 | 浙江富春江水电设备有限公司 | A kind of astute and able point of valve method and structure of runner bucket |
| CN110449760A (en) * | 2019-07-16 | 2019-11-15 | 浙江富春江水电设备有限公司 | A kind of astute and able method and structure of impact runner |
-
2021
- 2021-04-13 CN CN202110392102.2A patent/CN112983715A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0843092A1 (en) * | 1996-11-13 | 1998-05-20 | Turbinen- und Kraftwerksanlagenbau EFG Energieforschungs- und Entwicklungsgesellschaft m.b.H. & Co KG | Pretensioning Peltonwheel |
| US20100254814A1 (en) * | 2007-10-30 | 2010-10-07 | Alstom Hydro France | Pelton turbine wheel, method for making same and pelton turbine including such wheel |
| CN104625650A (en) * | 2015-01-21 | 2015-05-20 | 重庆科技学院 | Manufacturing technology for runner of impulse turbine |
| CN110449832A (en) * | 2019-07-16 | 2019-11-15 | 浙江富春江水电设备有限公司 | A kind of astute and able point of valve method and structure of runner bucket |
| CN110449760A (en) * | 2019-07-16 | 2019-11-15 | 浙江富春江水电设备有限公司 | A kind of astute and able method and structure of impact runner |
Non-Patent Citations (1)
| Title |
|---|
| 华北水力水电学院: "《水力机组安装与检修》", 30 November 1987 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113868796A (en) * | 2021-09-28 | 2021-12-31 | 哈尔滨电机厂有限责任公司 | Impulse turbine bucket root transition self-adaption method |
| CN113868796B (en) * | 2021-09-28 | 2024-04-09 | 哈尔滨电机厂有限责任公司 | Transition self-adaption method for root of water bucket of impulse turbine |
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Application publication date: 20210618 |
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