CN115815958B - Integral repairing tool and method for spray head of thin-wall multi-channel fuel nozzle - Google Patents
Integral repairing tool and method for spray head of thin-wall multi-channel fuel nozzle Download PDFInfo
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- CN115815958B CN115815958B CN202310160502.XA CN202310160502A CN115815958B CN 115815958 B CN115815958 B CN 115815958B CN 202310160502 A CN202310160502 A CN 202310160502A CN 115815958 B CN115815958 B CN 115815958B
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The tool comprises a substrate, a clamp body and an alignment block, and the method sequentially comprises the steps of clamping and fixing a nozzle pipe, removing an original nozzle by linear cutting, aligning light spots, measuring an alignment center distance, preheating the top surface of the nozzle pipe by laser, and printing a new nozzle by 3D. Compared with the existing welding processing manufacturing mode, the invention effectively reduces the processing difficulty, greatly shortens the processing period and effectively improves the processing qualification rate; compared with the existing 3D printing integral processing mode, the processing period is greatly shortened, and the processing cost is effectively reduced; in the development process of the dual-fuel nozzle of the gas turbine, when the structure and the size of the nozzle are required to be improved and adjusted according to actual needs, the original nozzle on the nozzle is only required to be removed, and a new nozzle is 3D printed on an original nozzle pipe, so that the development period and the cost of the dual-fuel nozzle of the gas turbine are effectively reduced.
Description
Technical Field
The invention belongs to the technical field of gas turbines, and particularly relates to a tool and a method for integrally repairing a nozzle of a thin-wall multi-channel fuel nozzle.
Background
The dual-fuel nozzle of the gas turbine is generally composed of an oil-gas double-layer pipeline and a spray head, and the current processing technology route of the nozzle mainly comprises two steps: (1) the welding manufacturing mode is adopted, the seam allowance is firstly machined at the joint surface of the pipeline and the spray head for positioning, and then the pipeline and the spray head are fixedly connected through argon arc welding, however, as the oil-gas double-layer pipeline (nozzle pipe) belongs to a thin-wall part, the welding processing difficulty is high, and meanwhile, the problems of long processing period and low processing qualification rate exist. (2) The whole processing mode of 3D printing is adopted, so that the processing difficulty can be reduced, the problem of long processing period still exists, and the defect of high processing cost also exists.
In the development process of the dual-fuel nozzle of the gas turbine, the structure and the size of a nozzle head of the nozzle are often required to be improved and adjusted according to actual needs; in the gas turbine combustor nozzle test process, the nozzle head of the nozzle is easy to damage; when the situation is faced, the spray head of the original nozzle obviously cannot continuously meet the actual requirement, so that only the nozzle can be remade, and the remade nozzle can only be used along the existing nozzle processing technology route, thereby seriously affecting the development period and cost of the dual-fuel nozzle of the gas turbine.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the integral repair tool and the method for the nozzle of the thin-wall multi-channel fuel nozzle, which effectively reduce the processing difficulty, greatly shorten the processing period and effectively improve the processing qualification rate compared with the existing welding processing manufacturing mode; compared with the existing 3D printing integral processing mode, the processing period is greatly shortened, and the processing cost is effectively reduced; in the development process of the dual-fuel nozzle of the gas turbine, when the structure and the size of the nozzle are required to be improved and adjusted according to actual needs, the original nozzle on the nozzle is only required to be removed, a new nozzle is printed on the original nozzle pipe in a 3D mode, and the development period and the cost of the dual-fuel nozzle of the gas turbine are effectively reduced.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a spray head integral repair tool of a thin-wall multi-channel fuel nozzle comprises a substrate, a main clamping block, a sub-clamping block and an alignment block; the main clamping block is fixedly connected and matched with the base plate through bolts and positioning pins; the auxiliary clamping block is fixedly connected and matched with the main clamping block through bolts and positioning pins; the main clamping block and the auxiliary clamping block are buckled together to form a clamping body, and the nozzle pipe is fixedly clamped between the main clamping block and the auxiliary clamping block; the alignment block is arranged at the top end of the clamp body, a cross scale line is arranged in the center of the top surface of the alignment block, and the alignment block is fixedly connected and matched with the clamp body through bolts.
The integral repairing method of the nozzle of the thin-wall multi-channel fuel nozzle adopts the integral repairing tool of the nozzle of the thin-wall multi-channel fuel nozzle, and comprises the following steps:
step one: a nozzle pipe clamp of the nozzle to be repaired is fastened in the clamp body;
step two: moving a fixture body clamping a nozzle to be repaired into a linear cutting machine, taking the bottom surface of the fixture body as a finding surface, cutting off an original nozzle of the nozzle by using the linear cutting machine, wherein the cutting surface is the top surface of a nozzle pipe, and the top surface of the nozzle pipe needs to be parallel to the bottom surface of the fixture body;
step three: fixedly mounting a substrate on a printing table of a 3D printer, transferring a fixture body clamped with a nozzle pipe from a wire cutting machine to the 3D printer, and fixedly mounting the fixture body on the substrate;
step four: placing the alignment block on the fixture body, then adjusting the position of the alignment block to enable the center of a laser spot to coincide with the center of a cross scale line on the top surface of the alignment block, and then fixing the alignment block and the fixture body together;
step five: the fixture body with the nozzle pipe is detached from the base plate and then transferred to a three-coordinate measuring instrument, and the center distance between the center of the nozzle pipe and the center of the cross scale line on the top surface of the alignment block is measured through the three-coordinate measuring instrument;
step six: the fixture body clamped with the nozzle pipe is transferred back to the 3D printer from the three-coordinate measuring instrument, and the fixture body is fixedly installed on the substrate again;
step seven: according to the center distance value measured in the fifth step, the original point position of the printing program of the 3D printer is moved from the center of the cross scale line on the top surface of the alignment block to the center of the nozzle pipe;
step eight: under the non-powdery state, scanning and preheating the top surface of the nozzle pipe by utilizing laser of a 3D printer;
step nine: and executing a 3D printing program, completing 3D printing of a new spray head on the top surface of the nozzle pipe according to the program, and finally completing the repairing of the nozzle.
The invention has the beneficial effects that:
compared with the existing welding processing manufacturing mode, the integral repairing tool and method for the nozzle of the thin-wall multi-channel fuel nozzle effectively reduce the processing difficulty, greatly shorten the processing period and effectively improve the processing qualification rate; compared with the existing 3D printing integral processing mode, the processing period is greatly shortened, and the processing cost is effectively reduced; in the development process of the dual-fuel nozzle of the gas turbine, when the structure and the size of the nozzle are required to be improved and adjusted according to actual needs, the original nozzle on the nozzle is only required to be removed, a new nozzle is printed on the original nozzle pipe in a 3D mode, and the development period and the cost of the dual-fuel nozzle of the gas turbine are effectively reduced.
Drawings
FIG. 1 is a schematic structural view of a nozzle tip integral repair tooling for a thin-walled multi-channel fuel nozzle of the present invention;
in the figure, 1-substrate, 2-main clamping block, 3-auxiliary clamping block, 4-alignment block and 5-nozzle pipe.
Description of the embodiments
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in FIG. 1, the integral repair tooling for the spray head of the thin-wall multi-channel fuel nozzle comprises a substrate 1, a main clamping block 2, a sub-clamping block 3 and an alignment block 4; the main clamping block 2 is fixedly connected and matched with the base plate 1 through bolts and positioning pins; the auxiliary clamping block 3 is fixedly connected and matched with the main clamping block 2 through bolts and positioning pins; the main clamping block 2 and the auxiliary clamping block 3 are buckled together to form a clamping body, and the nozzle pipe 5 is fixedly clamped between the main clamping block 2 and the auxiliary clamping block 3; the alignment block 4 is arranged at the top end of the clamp body, a cross scale line is arranged in the center of the top surface of the alignment block 4, and the alignment block 4 is fixedly connected and matched with the clamp body through bolts.
The integral repairing method of the nozzle of the thin-wall multi-channel fuel nozzle adopts the integral repairing tool of the nozzle of the thin-wall multi-channel fuel nozzle, and comprises the following steps:
step one: the nozzle pipe 5 of the nozzle to be repaired is clamped and fixed in the fixture body;
step two: moving a fixture body clamping a nozzle to be repaired into a linear cutting machine, taking the bottom surface of the fixture body as a finding surface, cutting off an original nozzle of the nozzle by using the linear cutting machine, wherein the cutting surface is the top surface of the nozzle pipe 5, and the top surface of the nozzle pipe 5 needs to be kept parallel to the bottom surface of the fixture body;
step three: fixedly mounting the substrate 1 on a printing table of a 3D printer, transferring a fixture body clamping the nozzle pipe 5 from a wire cutting machine to the 3D printer, and fixedly mounting the fixture body on the substrate 1;
step four: placing the alignment block 4 on the fixture body, then adjusting the position of the alignment block 4 to enable the center of a laser spot to coincide with the center of a cross scale line on the top surface of the alignment block 4, and then fixing the alignment block 4 and the fixture body together;
step five: the fixture body with the nozzle pipe 5 is detached from the base plate 1 and then transferred to a three-coordinate measuring instrument, and the center distance between the center of the nozzle pipe 5 and the center of the cross scale line on the top surface of the alignment block 4 is measured through the three-coordinate measuring instrument;
step six: the fixture body clamped with the nozzle pipe 5 is transferred back to the 3D printer from the three-coordinate measuring instrument, and the fixture body is fixedly installed on the substrate 1 again;
step seven: according to the center distance value measured in the fifth step, the original point position of the printing program of the 3D printer is moved from the center of the cross scale line on the top surface of the alignment block 4 to the center of the nozzle pipe 5;
step eight: under the non-powdery state, the top surface of the nozzle pipe 5 is scanned and preheated by utilizing the laser of the 3D printer;
step nine: and executing a 3D printing program, completing 3D printing of the new spray head on the top surface of the nozzle pipe 5 according to the program, and finally completing the repairing of the nozzle.
The embodiments are not intended to limit the scope of the invention, but rather are intended to cover all equivalent implementations or modifications that can be made without departing from the scope of the invention.
Claims (1)
1. The integral repairing tool for the nozzle of the thin-wall multi-channel fuel nozzle comprises a substrate, a main clamping block, a sub-clamping block and an alignment block; the main clamping block is fixedly connected and matched with the base plate through bolts and positioning pins; the auxiliary clamping block is fixedly connected and matched with the main clamping block through bolts and positioning pins; the main clamping block and the auxiliary clamping block are buckled together to form a clamping body, and the nozzle pipe is fixedly clamped between the main clamping block and the auxiliary clamping block; the alignment block is arranged at the top end of the clamp body, a cross scale line is arranged in the center of the top surface of the alignment block, and the alignment block is fixedly connected and matched with the clamp body through a bolt; the method is characterized in that: the repairing method comprises the following steps:
step one: a nozzle pipe clamp of the nozzle to be repaired is fastened in the clamp body;
step two: moving a fixture body clamping a nozzle to be repaired into a linear cutting machine, taking the bottom surface of the fixture body as a finding surface, cutting off an original nozzle of the nozzle by using the linear cutting machine, wherein the cutting surface is the top surface of a nozzle pipe, and the top surface of the nozzle pipe needs to be parallel to the bottom surface of the fixture body;
step three: fixedly mounting a substrate on a printing table of a 3D printer, transferring a fixture body clamped with a nozzle pipe from a wire cutting machine to the 3D printer, and fixedly mounting the fixture body on the substrate;
step four: placing the alignment block on the fixture body, then adjusting the position of the alignment block to enable the center of a laser spot to coincide with the center of a cross scale line on the top surface of the alignment block, and then fixing the alignment block and the fixture body together;
step five: the fixture body with the nozzle pipe is detached from the base plate and then transferred to a three-coordinate measuring instrument, and the center distance between the center of the nozzle pipe and the center of the cross scale line on the top surface of the alignment block is measured through the three-coordinate measuring instrument;
step six: the fixture body clamped with the nozzle pipe is transferred back to the 3D printer from the three-coordinate measuring instrument, and the fixture body is fixedly installed on the substrate again;
step seven: according to the center distance value measured in the fifth step, the original point position of the printing program of the 3D printer is moved from the center of the cross scale line on the top surface of the alignment block to the center of the nozzle pipe;
step eight: under the non-powdery state, scanning and preheating the top surface of the nozzle pipe by utilizing laser of a 3D printer;
step nine: and executing a 3D printing program, completing 3D printing of a new spray head on the top surface of the nozzle pipe according to the program, and finally completing the repairing of the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310160502.XA CN115815958B (en) | 2023-02-24 | 2023-02-24 | Integral repairing tool and method for spray head of thin-wall multi-channel fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310160502.XA CN115815958B (en) | 2023-02-24 | 2023-02-24 | Integral repairing tool and method for spray head of thin-wall multi-channel fuel nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115815958A CN115815958A (en) | 2023-03-21 |
| CN115815958B true CN115815958B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310160502.XA Active CN115815958B (en) | 2023-02-24 | 2023-02-24 | Integral repairing tool and method for spray head of thin-wall multi-channel fuel nozzle |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4837364B2 (en) * | 2005-11-15 | 2011-12-14 | 株式会社テック・ヤスダ | Fixing jig for small work |
| JP2019051566A (en) * | 2017-09-14 | 2019-04-04 | 株式会社サン機工 | Vice device |
| CN208034565U (en) * | 2018-02-02 | 2018-11-02 | 重庆鑫源动力制造有限公司 | A kind of oil injection nozzle mounting tool |
| CN108723715B (en) * | 2018-05-30 | 2020-05-19 | 中国航发动力股份有限公司 | Method for processing nozzle shell by using bar stock |
| CN210335157U (en) * | 2019-04-03 | 2020-04-17 | 苏州迅拓自动化科技有限公司 | Tool jig for machining and drilling nozzle |
| CN110666452A (en) * | 2019-09-19 | 2020-01-10 | 西安成立航空制造有限公司 | Machining method for replacing casting fuel nozzle shell through 3D printing |
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