CN112692482B - Positioning and mounting method for air branch pipe of scavenging header supercharger - Google Patents
Positioning and mounting method for air branch pipe of scavenging header supercharger Download PDFInfo
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- CN112692482B CN112692482B CN202011365935.1A CN202011365935A CN112692482B CN 112692482 B CN112692482 B CN 112692482B CN 202011365935 A CN202011365935 A CN 202011365935A CN 112692482 B CN112692482 B CN 112692482B
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a positioning and mounting method of a scavenging manifold supercharger air branch pipe, which relates to the technical field of diesel engines, in particular to a scavenging manifold supercharger air branch pipe. This location installation method of scavenging header booster air branch pipe, through installing the limiting plate on air pipe branch pipe body, utilize through bolt adjustment limiting plate benchmark simultaneously, flange and booster body gas outlet, bellows are accurate to be connected about can making the air branch pipe, replace the method of preparation frock in the past, have reduced because the installation error that the frock rigidity is relatively poor brings, more fall this more high-efficiently guarantee production, bring more economic benefits.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to a method for positioning and installing air branch pipes of a scavenging manifold supercharger.
Background
The marine diesel engine is the heart of a ship, and the scavenging manifold is an important component of an air system of the diesel engine and plays a significant role in the operation process of the diesel engine. The scavenging manifold, the exhaust manifold, the air cooler, the supercharger and other devices form an air system of the diesel engine together, and due to the influences of structural layout and the like, the air branch pipe connected with the supercharger and the scavenging pipe exists in a single component mode, so that the installation accuracy of the air branch pipe of the supercharger is always a key problem to be solved.
When the supercharger air branch pipe is installed in the past, the supercharger air branch pipe is firstly manufactured into a part and then is butted with the scavenging pipe body through the connecting flange, so that in order to guarantee the position accuracy during connection, the flange of the supercharger air branch pipe cannot be welded, spot welding is firstly carried out for prepositioning, after the scavenging pipe is machined, the supercharger is firstly preassembled, and the upper connecting flange and the lower connecting flange of the supercharger air branch pipe are positioned by utilizing the connecting flanges on the supercharger and the scavenging pipe body. The flange on the scavenging pipe body is connected with the flange under the booster air pipe and is positioned relatively easily, but the upper portion flange is because the angle and the existence of bellows can't direct butt joint location, need make the frock of upper portion flange, and the flange position on the simulation booster is gone to confirm the upper portion flange position of booster air branch pipe.
The scheme has the following defects in the practical process:
1. due to the inclined angle of the branch pipe, the precision requirement of the tool is high, integral processing is required, and the production cost is increased;
2. in consideration of assembly, the tooling material is not too heavy, but the overall rigidity of the tooling is poor, assembly errors can occur in the final use process, meanwhile, the same tooling is not suitable for long-term use, a new tooling needs to be manufactured, consumables are formed, cost control is not facilitated, and the overall production benefit is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for positioning and mounting an air branch pipe of a scavenging manifold supercharger, which solves the problems in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a scavenging header booster air branch pipe, includes scavenging header body, booster body, air branch pipe, the top of scavenging header body front end is provided with scavenging header flange, the top fixedly connected with booster location base of scavenging header body, booster location base passes through the bottom fixed connection of screw and booster body and is in the same place, the bottom of booster body is provided with booster flange, air branch pipe is located between scavenging header flange and the scavenging header flange, air branch pipe's top is provided with flange, air branch pipe's bottom is provided with flange down, air branch pipe's outside fixed mounting has the stopper, the internal thread of stopper has cup jointed through bolt.
Optionally, the upper connecting flange corresponds to a supercharger connecting flange, and the lower connecting flange corresponds to a scavenging manifold connecting flange.
Optionally, the limiting blocks are respectively located at the top and the bottom of the air branch pipe, and the through bolt penetrates through the limiting blocks and then is connected with the hole sites of the supercharger connecting flange and the scavenging header connecting flange.
A method for positioning and installing air branch pipes of a scavenging manifold supercharger comprises the following steps:
1. after the scavenging header body is processed, the supercharger body is installed by integral test run:
the supercharger positioning base is arranged on the scavenging header body, the supercharger body is fixed on the supercharger positioning base, the air branch pipe is used as a connecting pipeline of the scavenging header body and the supercharger body, and the accuracy requirement of a connecting flange is high, so that the position of the supercharger body can be ensured after the supercharger positioning base is arranged on the scavenging header body and is processed, and the air branch pipe is arranged to ensure the accuracy of the upper and lower connecting flanges of the air branch pipe;
2. install the stopper on the air branch pipe, flange position about confirming through-bolt:
spot welding an upper connecting flange and a lower connecting flange on an air branch pipe, welding limiting blocks at the upper end and the lower end of a vertebral canal of a supercharger body, transporting the air branch pipe to the upper scavenging manifold body after the supercharger body is installed, butting the positions of the connecting flange of the scavenging manifold and the lower connecting flange, penetrating the bottom of a through bolt through the limiting blocks, penetrating the other end of the through bolt through the supercharger connecting flange, and fixing the through bolt by using a nut so as to correct the positions of the upper connecting flange and the supercharger connecting flange;
3. after the position of the connecting flange is determined, the connecting flange is adjusted to a welding platform to complete flange welding, and deformation control is noticed:
after the through bolt determines the position of the connecting flange, the air branch pipe can be adjusted to the welding platform, welding work of the connecting flange is started, and the problem of flange reverse deformation needs to be considered when the flange is welded according to the thickness of the wall of the air branch pipe.
Optionally, the scavenging manifold body in the step one needs to be in a processed state, because the air branch pipe is used for connecting the scavenging manifold body with the supercharger body, in order to ensure the installation accuracy of the air branch pipe, the scavenging manifold body needs to be processed, the connection plate of the supercharger body is used as a reference after being processed, and then the supercharger connection flange on the supercharger body is used for reversely positioning the upper connection flange of the air branch pipe.
Optionally, in the second step, the upper connecting flange and the lower connecting flange of the air branch pipe are in a spot welding state, the limiting block is welded on the air branch pipe body, and the air branch pipe body is communicated with the supercharger connecting flange and the scavenging header connecting flange through the through bolt, so that the positions of the upper connecting flange and the lower connecting flange are determined.
Optionally, in the third step, because the wall thickness of the air branch pipe is thin, reverse deformation is easily generated during flange welding, a slightly thick tooling plate is required to be fixed with the flange through bolts, and then the flange is welded, so that flange deformation is controlled as much as possible.
The invention provides a positioning and mounting method for an air branch pipe of a scavenging manifold supercharger, which has the following beneficial effects:
1. this location installation method of scavenging header booster air branch pipe, through installing the limiting plate on air pipe branch pipe body, utilize through bolt adjustment limiting plate benchmark simultaneously, flange and booster body gas outlet, bellows are accurate to be connected about can making the air branch pipe, replace the method of preparation frock in the past, have reduced because the installation error that the frock rigidity is relatively poor brings, more fall this more high-efficiently guarantee production, bring more economic benefits.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the supercharger of the present invention when pre-assembled;
fig. 3 is a schematic structural view of an air branch pipe of the present invention.
In the figure: 1. a scavenging header body; 2. a supercharger body; 3. an air branch pipe; 4. the scavenging manifold is connected with a flange; 5. a supercharger positioning base; 6. a supercharger connecting flange; 7. an upper connecting flange; 8. a lower connecting flange; 9. a limiting block; 10. and a through bolt.
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.
Referring to fig. 1 to 3, the present invention provides a technical solution: a scavenging manifold booster air branch pipe comprises a scavenging manifold body 1, a booster body 2 and an air branch pipe 3, wherein the top of the front end of the scavenging manifold body 1 is provided with a scavenging manifold connecting flange 4, the top of the scavenging manifold body 1 is fixedly connected with a booster positioning base 5, the booster positioning base 5 is fixedly connected with the bottom of the booster body 2 through screws, the booster positioning base 5 is installed on the top of the scavenging manifold body 1, then the booster body 2 is installed on the top of the scavenging manifold body 1, the original installation of the booster body 2 is realized, the positions of the scavenging manifold connecting flange 4 and the booster connecting flange 6 are ensured to be aligned, thereby an upper connecting flange 7 and a lower connecting flange 8 at two ends of the air branch pipe 3 are reversely positioned, the installation accuracy of the air branch pipe 3 is ensured, the booster connecting flange 6 is arranged at the bottom of the booster body 2, air branch pipe 3 is located between scavenging manifold flange 4 and scavenging manifold flange 4, air branch pipe 3's top is provided with flange 7, air branch pipe 3's bottom is provided with flange 8 down, it is corresponding with booster flange 6 to go up flange 7, lower flange 8 is corresponding with scavenging manifold flange 4, air branch pipe 3's outside fixed mounting has stopper 9, through-bolt 10 has been cup jointed to stopper 9's internal thread, through set up stopper 9 in air branch pipe 3's outside, utilize through-bolt 10 to pass the inside through-hole of stopper 9, be connected with booster flange 6 of booster body 2 bottom and the hole site of scavenging manifold flange 4 at scavenging manifold body 1 top again, then use bolt and nut to fix, make air branch pipe 3's both ends go up flange 7 and lower flange 8 and booster flange 6 and scavenging manifold flange 4 closely with scavenging manifold flange 6 Laminating, then welding last flange 7 and lower flange 8, guaranteeing the precision of air branch pipe 3 installation, stopper 9 is located air branch pipe 3's top and bottom respectively, and through bolt 10 passes behind stopper 9 and is connected at the hole site with booster flange 6 and scavenging header flange 4.
A method for positioning and installing air branch pipes of a scavenging manifold supercharger comprises the following steps:
1. after the scavenging header body 1 is processed, the supercharger body 2 is installed by integral test run:
the supercharger positioning base 5 is installed on the scavenging manifold body 1, the supercharger body 2 is fixed on the supercharger positioning base 5, the air branch pipe 3 is used as a connecting pipeline of the scavenging manifold body 1 and the supercharger body 2, and the accuracy requirement of a connecting flange is high, so that the position of the supercharger body 2 can be ensured after the supercharger positioning base 5 is placed on the scavenging manifold body 1, and the air branch pipe 3 is installed to ensure the accuracy of the upper and lower connecting flanges of the air branch pipe 3;
2. install stopper 9 on air branch 3, confirm upper and lower flange position through-bolt 10:
the upper connecting flange 7 and the lower connecting flange 8 on the air branch pipe 3 are firstly subjected to spot welding treatment, meanwhile, limiting blocks 9 are welded at the upper end and the lower end of a vertebral canal of the supercharger body 2, after the supercharger body 2 is installed, the air branch pipe 3 is transferred to the upper scavenging manifold body 1, so that the positions of the scavenging manifold connecting flange 4 and the lower connecting flange 8 are butted, the bottom of a through bolt 10 penetrates through the limiting blocks 9, the other end of the through bolt 10 penetrates through the supercharger connecting flange 6 and is fixed by a nut, and the positions of the upper connecting flange 7 and the supercharger connecting flange 6 are corrected;
3. after the position of the connecting flange is determined, the connecting flange is adjusted to a welding platform to complete flange welding, and deformation control is noticed:
after the through bolts 10 determine the position of the connecting flange, the air branch pipe 3 can be adjusted to a welding platform, welding work of the connecting flange is started, and the problem of flange reverse deformation needs to be considered when the flange is welded according to the thickness of the wall of the air branch pipe 3.
The scavenging manifold body 1 in the first step must be in a processed state, because the air branch pipes 3 are used for connecting the scavenging manifold body 1 and the supercharger body 2, in order to ensure the installation accuracy of the air branch pipes 3, the scavenging manifold body 1 needs to be processed, the connecting plate of the supercharger body 2 is processed to be a standard, and then the supercharger connecting flange 6 on the supercharger body 2 is used for reversely positioning the upper connecting flange 7 of the air branch pipes 3.
And step two, an upper connecting flange 7 and a lower connecting flange 8 of the air branch pipe 3 are in a spot welding state, a limiting block 9 is welded on the body of the air branch pipe 3, and the positions of the upper connecting flange 7 and the lower connecting flange 8 are determined by communicating a through bolt 10 with a supercharger connecting flange 6 and a scavenging manifold connecting flange 4.
And step three, because the wall thickness of the air branch pipe 3 is thin, the anti-deformation is easy to generate during flange welding, a slightly thick tooling plate is required to be fixed with the flange by using bolts, then the flange is welded, and the deformation of the flange is controlled as much as possible.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A method for positioning and mounting an air branch pipe of a scavenging manifold supercharger comprises a scavenging manifold body (1), a supercharger body (2) and an air branch pipe (3), wherein a scavenging manifold connecting flange (4) is arranged at the top of the front end of the scavenging manifold body (1), a supercharger positioning base (5) is fixedly connected to the top of the scavenging manifold body (1), the supercharger positioning base (5) is fixedly connected with the bottom of the supercharger body (2) through screws, a supercharger connecting flange (6) is arranged at the bottom of the supercharger body (2), the air branch pipe (3) is positioned between the scavenging manifold connecting flange (4) and the supercharger connecting flange (6), an upper connecting flange (7) is arranged at the top of the air branch pipe (3), a lower connecting flange (8) is arranged at the bottom of the air branch pipe (3), a limiting block (9) is fixedly mounted on the outer portion of the air branch pipe (3), and a through bolt (10) is sleeved on the inner thread of the limiting block (9); the method is characterized in that: the method comprises the following steps:
1. after the scavenging header body (1) is processed, the supercharger body (2) is integrally mounted by trial run:
the supercharger positioning base (5) is installed on the scavenging header body (1), the supercharger body (2) is fixed on the supercharger positioning base (5), the air branch pipe (3) is used as a connecting pipeline of the scavenging header body (1) and the supercharger body (2), and the accuracy requirement of a connecting flange is high, so that the supercharger body (2) can be ensured after the supercharger positioning base (5) is placed on the scavenging header body (1) and the machining is finished, and the air branch pipe (3) is installed at the moment to ensure the accuracy of the upper and lower connecting flanges of the air branch pipe (3);
2. install stopper (9) on air branch pipe (3), flange position about confirming through bolt (10):
an upper connecting flange (7) and a lower connecting flange (8) on an air branch pipe (3) are subjected to spot welding treatment, limiting blocks (9) are welded at the upper end and the lower end of the air branch pipe (3), the air branch pipe (3) is transferred to an upper scavenging manifold body (1) after a supercharger body (2) is installed, so that the positions of the scavenging manifold connecting flange (4) and the lower connecting flange (8) are butted, the bottom of a through bolt (10) penetrates through the limiting blocks (9), the other end of the through bolt (10) penetrates through the supercharger connecting flange (6), and the through bolt is fixed by a nut, so that the positions of the upper connecting flange (7) and the supercharger connecting flange (6) are corrected;
3. after the position of the connecting flange is determined, the connecting flange is adjusted to a welding platform to complete flange welding, and deformation control is noticed:
after the through bolts (10) determine the position of the connecting flange, the air branch pipe (3) can be adjusted to a welding platform, welding work of the connecting flange is started, and the problem of flange reverse deformation needs to be considered when the flange is welded according to the thickness of the wall of the air branch pipe (3).
2. The method for positioning and installing the air branch pipe of the scavenging manifold supercharger according to claim 1, characterized in that: the scavenging manifold body (1) in the first step is in a processed state, the air branch pipes (3) are used for connecting the scavenging manifold body (1) and the supercharger body (2), in order to ensure the installation accuracy of the air branch pipes (3), the scavenging manifold body (1) needs to be processed, the processed connecting plate of the supercharger body (2) is a standard, and then the supercharger connecting flange (6) on the supercharger body (2) is used for reversely positioning the upper connecting flange (7) of the air branch pipes (3).
3. The method for positioning and installing the air branch pipe of the scavenging manifold supercharger according to claim 1, characterized in that: and step two, an upper connecting flange (7) and a lower connecting flange (8) of the air branch pipe (3) are in a spot welding state firstly, and the positions of the upper connecting flange (7) and the lower connecting flange (8) are determined by welding a limiting block (9) on the body of the air branch pipe (3) and communicating with a supercharger connecting flange (6) and a scavenging header connecting flange (4) through bolts (10).
4. The method for positioning and installing the air branch pipe of the scavenging manifold supercharger according to claim 3, characterized in that: in the third step, because the wall thickness of the air branch pipe (3) is thin, the reverse deformation is easy to generate during flange welding, a slightly thick tooling plate is required to be fixed with the flange by using bolts, then the flange is welded, and the deformation of the flange is controlled as much as possible.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365935.1A CN112692482B (en) | 2020-11-29 | 2020-11-29 | Positioning and mounting method for air branch pipe of scavenging header supercharger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011365935.1A CN112692482B (en) | 2020-11-29 | 2020-11-29 | Positioning and mounting method for air branch pipe of scavenging header supercharger |
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| CN112692482A CN112692482A (en) | 2021-04-23 |
| CN112692482B true CN112692482B (en) | 2022-12-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441900B (en) * | 2021-05-21 | 2023-03-24 | 中国船舶重工集团柴油机有限公司 | Tool and method for welding exhaust pipe, scavenging box flange and supercharger flange |
| CN113686277B (en) * | 2021-08-23 | 2024-03-19 | 中船发动机有限公司 | Verification method of marine diesel engine pipeline verification device |
| CN113941812A (en) * | 2021-11-02 | 2022-01-18 | 上海中船三井造船柴油机有限公司 | Positioning tool and mounting method for air inlet flange of scavenging manifold of marine diesel engine |
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| US6990712B2 (en) * | 2003-12-03 | 2006-01-31 | Shelton William C | Pipe joining tool |
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| CN105618986A (en) * | 2016-03-22 | 2016-06-01 | 上海中船三井造船柴油机有限公司 | Positioning device and method used for assembling of supercharger and air pipe |
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