CN111805078B - Manufacturing method of 300 MW-level heavy-duty gas turbine nozzle swirler assembly - Google Patents
Manufacturing method of 300 MW-level heavy-duty gas turbine nozzle swirler assembly Download PDFInfo
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- CN111805078B CN111805078B CN202010718466.0A CN202010718466A CN111805078B CN 111805078 B CN111805078 B CN 111805078B CN 202010718466 A CN202010718466 A CN 202010718466A CN 111805078 B CN111805078 B CN 111805078B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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Abstract
A manufacturing method of a 300 MW-level heavy type gas turbine nozzle swirler assembly solves the problem that the production efficiency of the existing method for manufacturing the 300 MW-level heavy type gas turbine nozzle swirler assembly is not high, and belongs to the technical field of heavy type gas turbine manufacturing. The invention comprises the following steps: manufacturing three tools, determining the assembling and welding sequence of each part, assembling the cyclone and the front joint by using the end with the large radius of the tool 1 and the tool 2 to enable the cyclone and the front joint to be coaxial and contact, assembling the cyclone and the outer ring at the same time, and welding the contact position of the cyclone and the front joint; turning over the swirler, and utilizing the end with the small radius of the No. 1 tooling to enable the corrugated pipe assembly to be coaxial and contact with the swirler for welding; sleeving the rear connector from the end with the small radius of the No. 1 tool, penetrating the rear connector through the corrugated pipe assembly, utilizing the No. 3 tool to enable the rear connector to be coaxial with the swirler, and welding the contact position of the rear connector and the swirler; welding the outer ring, the front ring and the swirler; and after welding, dismounting the welding positioning tooling piece.
Description
Technical Field
The invention relates to a 300 MW-level heavy-duty gas turbine nozzle swirler assembly, in particular to a manufacturing method thereof, and belongs to the technical field of heavy-duty gas turbine manufacturing.
Background
The 300MW heavy-duty gas turbine nozzle swirler assembly is a multi-layer nested tube group part welding structure, and the manufacturing efficiency of products is influenced under the condition that the sequence of production and manufacturing is not strict and clear. The structure is mostly a thin-wall part welding structure, the thin-wall part is influenced by a welding temperature field in the welding process, internal stress is generated to generate deformation influence on a workpiece, the rigidity of the thin-wall part product is not enough, the deformation is particularly serious, the manufacturing precision of the drawing design on the concentricity and the like of the product is extremely strict (0.3mm), and the product percent of pass is seriously influenced if certain method measures are not taken.
Disclosure of Invention
Aiming at the problem that the production efficiency of the existing method for manufacturing the 300 MW-level heavy type gas turbine nozzle swirler assembly is not high, the invention provides the method for manufacturing the 300 MW-level heavy type gas turbine nozzle swirler assembly, which can improve the one-time qualification rate and the production efficiency.
The invention discloses a method for manufacturing a 300MW heavy-duty gas turbine nozzle swirler assembly, which comprises the following steps:
s1, determining a welding mode according to the structure and design requirements of the 300 MW-level heavy-duty gas turbine nozzle swirler assembly;
s2, manufacturing a welding and positioning tooling piece, wherein the welding and positioning tooling piece comprises a tooling No. 1 7, a tooling No. 2 and a tooling No. 3, the tooling No. 1 is formed by turning a whole red copper round bar, the radius of a first section of cylinder of the tooling No. 1 comprising a large head and a small head is smaller than that of a second section of cylinder, and the radius of the second section of cylinder is consistent with that of a central hole of a swirler 2; the tool 8 No. 2 is a circular ring, the inner diameter of the circular ring is consistent with the radius of the second section of the cylinder of the tool 7 No. 1, the outer diameter of the tool 8 No. 2 is consistent with the inner diameter of the front connector 1, and an axial through hole is formed in the side wall of the tool 8 No. 2; the tool 9 No. 3 is two circular rings with the same outer diameter, the whole tool is made of round steel in a turning mode, the inner diameter of the first circular ring section of the tool 9 No. 3 is smaller than that of the second circular ring section, an axial through hole is formed in the side wall of the tool 9 No. 3, the inner diameter of the first circular ring section of the tool 9 No. 3 is consistent with the radius of the first cylindrical section of the tool 7 No. 1, and the outer diameter of the tool 9 No. 3 is consistent with the inner diameter of the rear connector 5;
s3, determining the assembling and welding sequence of the parts, and welding, wherein the welding comprises the following steps:
s31, sequentially penetrating the end with the large radius of the tool No. 1 with the large radius into a center hole of a swirler 2 and a front connector 1, enabling the outer diameter of the end with the large radius of the tool No. 1 with the inner diameter of the center hole of the swirler 2 to be matched, sleeving the tool No. 2 between the end with the large radius of the front connector 1 and the end with the large radius of the tool No. 1 with the tool No. 2, enabling the outer diameter of the front connector 1 of the tool No. 2 to be matched with the inner diameter of the front connector 1, enabling the swirler 2 and the front connector 1 to be coaxial and to be in contact, assembling the swirler 2 and an outer ring 4, welding the contact position of the swirler 2 and the front connector 1, and introducing argon into a through hole of the tool No. 2 during welding;
s32, after the welding of the cyclone 2 and the front connector 1 is finished and the flaw detection is qualified, turning over the cyclone 2, continuing to enable the position of a welding opening to be close to the position of a rotary table jaw, sleeving the corrugated pipe assembly 6 from one end of the tool 7 with the small radius No. 1, enabling the corrugated pipe assembly 6 to be coaxial with and contact with the cyclone 2, and welding the contact position of the corrugated pipe assembly 6 and the cyclone 2;
s33, sleeving the rear connector 5 from the end with the small radius of the tool No. 1 7, penetrating through the corrugated pipe assembly 6, contacting with the cyclone 2, inserting the tool No. 3 between the rear connector 5 and the tool No. 1 7, wherein the inner diameter of the end with the small inner diameter of the tool No. 3 is matched with the inner diameter of the end with the small radius of the tool No. 1, the inner diameter of the end with the large inner diameter of the tool No. 3 is matched with the outer diameter of the end part of the corrugated pipe assembly 6, the tool No. 3 enables the rear connector 5 to be coaxial with the cyclone 2, welding the contact position of the rear connector 5 and the cyclone 2, and introducing argon gas into the through hole of the tool No. 39 during welding;
s34, welding the outer ring 4, the front ring 3 and the swirler 2;
and S4, recovering the workpiece to room temperature after welding is finished, and removing the welding positioning tool piece.
Preferably, in S1, it is determined that welding is performed by means of a high-energy laser beam; in S3, the laser gun head is fixed and all parts are welded with the swirler 2 in a uniform speed circular rotation mode after being assembled, and argon is input into the inner wall for back argon protection.
Preferably, the diameter of the first section of the No. 1 tool 7 cylinder ranges from 36.9mm to 37mm, the length of the first section of the cylinder ranges from 230mm, the diameter of the second section of the cylinder ranges from 39.75mm to 39.88mm, and the length of the second section of the cylinder ranges from 135 mm;
the No. 2 tooling 8 is 40mm in inner diameter, 56mm in outer diameter and 4mm in thickness and is made of stainless steel;
the outer diameter of the tool 3 ranges from 69.85mm to 69.95mm, the inner diameter of the first section of the ring of the tool 3 ranges from 37.05mm to 37.15mm, the length of the first section of the ring is 45mm, and the radius of the second section of the ring ranges from 47mm to 47.1mm, and the length of the second section of the ring is 40 mm.
The invention has the beneficial effects that: a reasonable assembling and welding sequence is formulated according to the structural characteristics of the product, a special tool is manufactured according to the assembling and welding operation of each step, the assembling precision of each step is controlled through the tool, the tool is used for reinforcing and positioning in the welding process of each step, and the influence of uneven heat input in laser welding on the whole assembling and welding precision is avoided. The manufacturing accuracy such as concentricity and the like of the nozzle swirler 2 after assembly and welding meets the design requirements by determining the assembly sequence, specially manufacturing the tooling and controlling the process parameters, and the 300MW reburning nozzle swirler 2 is manufactured by the method, so that qualified products are ensured to be manufactured, and further, the subsequent assembly and the operation under the working condition are not influenced. By the method, the 300 MW-class F-class heavy gas turbine combustor head nozzle swirler 2 can be efficiently and orderly manufactured, the assembly precision in the manufacturing process is controlled, the deformation generated in the welding process of thin-wall parts is controlled, the concentricity requirement of drawing design is guaranteed, and the one-time qualification rate and the production efficiency are improved.
Drawings
FIG. 1 is a schematic structural diagram of a 300MW heavy duty gas turbine nozzle swirler assembly;
FIG. 2 is a schematic view of the three tools;
FIG. 3 is a schematic structural diagram of tooling No. 1;
FIG. 4 is a schematic structural diagram of tool No. 2;
FIG. 5 is a schematic structural view of the tool 9 No. 3;
fig. 6 is a sectional view a-a of fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The manufacturing method of the 300 MW-level heavy-duty gas turbine nozzle swirler assembly determines the installing and welding manufacturing method mode of the swirler 2, combines the sequence of assembling and welding of all parts formulated by the product structure, manufactures the special installing and welding positioning tool, ensures the assembling precision and controls the deformation condition in the welding process of thin-wall parts, and enables the welded parts to meet the precision requirement of design, and specifically comprises the following steps:
firstly, welding in a high-energy laser beam mode according to the structure and design requirements of a 300 MW-level heavy-duty gas turbine nozzle swirler assembly;
step two, manufacturing a welding and positioning tooling piece, which comprises a tool 1 7, a tool 2 8 and a tool 3, wherein as shown in fig. 3, the tool 1 is a two-section cylinder, is turned from red copper (T2) and is integrally turned from round copper, the radius of the first section of the cylinder of the tool 1 is smaller than that of the second section of the cylinder, and the radius of the second section of the cylinder is consistent with that of the central hole of the swirler 2; as shown in fig. 4, the tool No. 2 8 is a circular ring, the inner diameter of the circular ring is consistent with the radius of the second section of the cylinder of the tool No. 1, the outer diameter of the tool No. 2 is consistent with the inner diameter of the front joint 1, and an axial through hole is formed in the side wall of the tool No. 2 8; as shown in fig. 5 and 6, the No. 3 tooling 9 is formed by integrally turning two circular rings with the same outer diameter, the inner diameter of the first circular ring of the No. 3 tooling 9 is smaller than that of the second circular ring, an axial through hole is formed in the side wall of the No. 3 tooling 9, the inner diameter of the first circular ring of the No. 3 tooling 9 is consistent with the radius of the first cylinder of the No. 1 tooling 7, and the outer diameter of the No. 3 tooling 9 is consistent with the inner diameter of the rear connector 5;
the through holes formed in the tool 8 and the tool 9 of this embodiment are argon gas input holes, as shown in fig. 2, for use in argon back protection, and argon gas is input to the back of the weld of the workpiece from the argon gas input holes during welding. No. 1 frock 7 chooses for use red copper material to avoid the welding in-process to combine together with the product welding seam, light hammer can take out to the activity after the welding is accomplished.
In the welding process, a laser gun head is fixed, all parts are welded with the swirler 2 in a uniform-speed circumferential rotation mode after being assembled, and argon is input into the inner wall to carry out back argon protection.
Step three, referring to fig. 1 and 2, determining the assembling and welding sequence of each part, and welding, including:
step 1, combining the limitation of the clamping capacity of a rotary table, and aiming at ensuring the stability of the circumference of a laser welding joint in the process of uniform rotation, firstly carrying out the assembly welding work of a swirler 2 and a front joint 1, sequentially penetrating one end with a large radius of a tool 1 with a tool 7 into a central hole of the swirler 2 and the front joint 1, wherein the outer diameter of one end with a large radius of the tool 1 is matched with the inner diameter of the central hole of the swirler 2, sleeving a tool 2 8 between the front joint 1 and one end with a large radius of the tool 1 with the tool 7, matching the outer diameter of the tool 2 with the inner diameter of the front joint 1, enabling the swirler 2 to be coaxial and contacted with the front joint 1, and simultaneously assembling the swirler 2 with an outer ring 4 so as to prevent the swirler 2 from being damaged in the clamping process, welding the contact position of the swirler 2 and the front joint 1, and introducing argon into a through hole of the tool 2 during welding;
step 4, welding the outer ring 4, the front ring 3 and the swirler 2;
and step four, after the welding is finished, the workpiece is recovered to the room temperature, and the welding positioning tool piece is dismounted.
As shown in fig. 3 to 6, the diameter of the first section of the No. 1 tool 7 cylinder ranges from 36.9mm to 37mm, the length is 230mm, the diameter of the second section of the cylinder ranges from 39.75mm to 39.88mm, and the length is 135 mm;
the No. 2 tooling 8 is 40mm in inner diameter, 56mm in outer diameter and 4mm in thickness and is made of stainless steel;
the outer diameter of the tool 3 ranges from 69.85mm to 69.95mm, the inner diameter of the first section of the ring of the tool 3 ranges from 37.05mm to 37.15mm, the length of the first section of the ring is 45mm, the radius of the second section of the ring ranges from 47mm to 47.1mm, and the length of the second section of the ring is 40 mm.
The method has the advantages that reasonable assembling and welding sequences are formulated according to the structural characteristics of products, the special tool is manufactured according to the assembling and welding operation of each step, the assembling precision of each step is controlled through the tool, the tool is used for reinforcing and positioning in the welding process of each step, and the influence on the whole assembling and welding precision caused by uneven heat input in laser welding is avoided. The manufacturing accuracy such as concentricity and the like of the nozzle swirler 2 after assembly and welding meets the design requirements by determining the assembly sequence, specially manufacturing the tooling and controlling the process parameters, and the 300MW reburning nozzle swirler 2 is manufactured by the method, so that qualified products are ensured to be manufactured, and further, the subsequent assembly and the operation under the working condition are not influenced. By the method, the 300 MW-class F-class heavy gas turbine combustor head nozzle swirler 2 can be efficiently and orderly manufactured, the assembly precision in the manufacturing process is controlled, the deformation generated in the welding process of thin-wall parts is controlled, the concentricity requirement of drawing design is guaranteed, and the one-time qualification rate and the production efficiency are improved.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (3)
1. A method of making a 300MW class heavy duty combustion engine nozzle swirler assembly, the method comprising:
s1, determining a welding mode according to the structure and design requirements of the 300 MW-level heavy-duty gas turbine nozzle swirler assembly;
s2, manufacturing a welding and positioning tooling piece, wherein the welding and positioning tooling piece comprises a No. 1 tooling, a No. 2 tooling and a No. 3 tooling, the No. 1 tooling is formed by turning a whole red copper round bar and comprises a large-head two-section cylinder and a small-head two-section cylinder, the radius of the first section cylinder of the No. 1 tooling is smaller than that of the second section cylinder, and the radius of the second section cylinder is consistent with that of the center hole of the swirler; the No. 2 tool is a circular ring, the inner diameter of the circular ring is consistent with the radius of the second section of the cylinder of the No. 1 tool, the outer diameter of the No. 2 tool is consistent with the inner diameter of the front joint (1), and an axial through hole is formed in the side wall of the No. 2 tool; the tool 3 is composed of two circular rings with the same outer diameter, the whole tool is manufactured by round steel turning, the inner diameter of the first section of the circular ring of the tool 3 is smaller than that of the second section of the circular ring, an axial through hole is formed in the side wall of the tool 3, the inner diameter of the first section of the circular ring of the tool 3 is consistent with the radius of the first section of the cylinder of the tool 1, and the outer diameter of the tool 3 is consistent with the inner diameter of the rear connector;
s3, determining the assembling and welding sequence of the parts, and welding, wherein the welding comprises the following steps:
s31, sequentially penetrating one end with a large radius of the No. 1 tooling into a center hole and a front connector of a swirler, enabling the outer diameter of one end with a large radius of the No. 1 tooling to be matched with the inner diameter of the center hole of the swirler, sleeving the No. 2 tooling between the front connector and one end with a large radius of the No. 1 tooling, enabling the outer diameter of the No. 2 tooling to be matched with the inner diameter of the front connector, enabling the swirler and the front connector to be coaxial and contacted, assembling the swirler and an outer ring, welding the contact position of the swirler and the front connector, and introducing argon into a through hole of the No. 2 tooling during welding;
s32, after the welding of the cyclone and the front connector is finished and the flaw detection is qualified, turning over the cyclone, continuing to enable the position of a welding opening to be close to the position of a rotary table jaw, sleeving the corrugated pipe assembly from one end with a small radius of the No. 1 tool, enabling the corrugated pipe assembly to be coaxial and contact with the cyclone, and welding the contact position of the corrugated pipe assembly and the cyclone;
s33, sleeving the rear connector from the end with the small radius of the tool No. 1, penetrating through the corrugated pipe assembly, contacting with the cyclone, inserting the tool No. 3 between the rear connector and the tool No. 1, enabling the inner diameter of the end with the small inner diameter of the tool No. 3 to be matched with the inner diameter of the end with the small radius of the tool No. 1, enabling the inner diameter of the end with the large inner diameter of the tool No. 3 to be matched with the outer diameter of the end part of the corrugated pipe assembly, enabling the rear connector to be coaxial with the cyclone by the tool No. 3, welding the contact position of the rear connector and the cyclone, and introducing argon gas into the through hole of the tool No. 3 during welding;
s34, welding the outer ring, the front ring and the swirler;
and S4, recovering the workpiece to room temperature after welding is finished, and removing the welding positioning tool piece.
2. The method of manufacturing a 300 MW-class heavy duty combustion engine nozzle swirler assembly of claim 1, wherein in S1 welding is determined by means of a high energy laser beam; in S3, the laser gun head is fixed and all parts are welded with the swirler in a uniform speed circular rotation mode after the assembly, and argon is input into the inner wall for back argon protection.
3. The method of claim 1, wherein the diameter of the first section cylinder of the tool 1 is in a range of 36.9mm to 37mm and the length is 230mm, and the diameter of the second section cylinder is in a range of 39.75mm to 39.88mm and the length is 135 mm;
the inner diameter of the No. 2 tool is 40mm, the outer diameter is 56mm, the thickness is 4mm, and stainless steel is adopted;
the outer diameter of the tool No. 3 ranges from 69.85mm to 69.95mm, the inner diameter of the first section of the ring of the tool No. 3 ranges from 37.05mm to 37.15mm, the length of the first section of the ring is 45mm, the radius of the second section of the ring ranges from 47mm to 47.1mm, and the length of the second section of the ring is 40 mm.
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| CN113857729B (en) * | 2021-10-25 | 2024-08-13 | 上海东鼎钢结构有限公司 | Rudder blade welding positioning tool and application method thereof |
| CN115255533B (en) * | 2022-08-31 | 2023-12-29 | 重庆红江机械有限责任公司 | Pretreatment method and cleaning method for brazing heat treatment of cyclone liner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2288555C (en) * | 1998-11-12 | 2007-01-23 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor |
| US20080276622A1 (en) * | 2007-05-07 | 2008-11-13 | Thomas Edward Johnson | Fuel nozzle and method of fabricating the same |
| KR101299962B1 (en) * | 2011-07-26 | 2013-08-26 | 주식회사 중원 에스엠이티 | Manufacturing method of swirler and diesel burner with a swirler |
| CN102649187B (en) * | 2012-05-22 | 2014-06-18 | 哈尔滨汽轮机厂有限责任公司 | Vacuum brazing method of gas burner of combustion chamber of gas turbine |
| CN103104936B (en) * | 2012-12-24 | 2014-11-05 | 哈尔滨汽轮机厂有限责任公司 | Unit nozzle for organizing combustion of large flow medium and low calorific value fuel |
| EP2968840B1 (en) * | 2013-03-15 | 2018-06-27 | Abbott Cardiovascular Systems Inc. | Method of forming reduced material tip for catheter |
| CN104097008B (en) * | 2014-07-15 | 2016-08-17 | 中国南方航空工业(集团)有限公司 | The stationary fixture of fuel nozzle and the processing method of fuel nozzle |
| CN205422892U (en) * | 2015-08-23 | 2016-08-03 | 浙江福爱电子有限公司 | Engine aftertreatment SCR system of SCR reductant nozzle and applied this reductant nozzle |
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