CN115523029A - Rectifier manufacturing process and rectifier - Google Patents

Rectifier manufacturing process and rectifier Download PDF

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Publication number
CN115523029A
CN115523029A CN202211298721.6A CN202211298721A CN115523029A CN 115523029 A CN115523029 A CN 115523029A CN 202211298721 A CN202211298721 A CN 202211298721A CN 115523029 A CN115523029 A CN 115523029A
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CN
China
Prior art keywords
blade
inner ring
blades
outer ring
rectifier
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Pending
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CN202211298721.6A
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Chinese (zh)
Inventor
李俊杰
彭河鑫
党文苗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DEYANG YUXIN MACHINERY MANUFACTURING CO LTD
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DEYANG YUXIN MACHINERY MANUFACTURING CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by DEYANG YUXIN MACHINERY MANUFACTURING CO LTD filed Critical DEYANG YUXIN MACHINERY MANUFACTURING CO LTD
Priority to CN202211298721.6A priority Critical patent/CN115523029A/en
Publication of CN115523029A publication Critical patent/CN115523029A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04Air intakes for gas-turbine plants or jet-propulsion plants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00Stators
    • F01D9/02Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention discloses a rectifier and a manufacturing process thereof, and relates to the field of blade rectifiers, wherein the rectifier comprises an outer ring, an inner ring and blades, and S1, the outer ring and the blades are integrally processed to form a first part which is provided with the outer ring, the blades and an internal allowance which is positioned in the outer ring and is connected with the blades; s2: cutting off the internal allowance of the first component to form a second component, so that the blade reaches the design size; s3: the inner ring is connected to the other end of the blade in the second member. For the rectifier, the connecting position of the inner ring and the blade is filled with rubber. The blades are connected with the outer ring and the inner ring in a welding mode, so that various subsequent special processing technologies in product production are reduced, and the aims of reducing negative effects on the products caused by welding and special technologies and improving production efficiency are further fulfilled; the vibration of the blade generated during the diversion airflow can be effectively buffered from the structure, the possibility of fatigue and damage of the blade is reduced, and the purpose of ensuring the service life is achieved.

Description

Rectifier manufacturing process and rectifier
Technical Field
The invention relates to the field of blade rectifiers, in particular to a rectifier manufacturing process and a rectifier.
Background
In the field of engines, in particular in the aeronautical field, the commutator, also known as the stationary ring, is installed in the engine, mainly for the purpose of conditioning or guiding the air flow.
At present, a general basic structure of a rectifier is provided with an outer ring and an inner ring, blades for guiding airflow are fixedly arranged between the outer ring and the inner ring, and the blades are correspondingly connected with the outer ring and the inner ring by welding (electron beam welding) in the rectifier production process in a rectifier manufacturing factory. Because most of welding operations are manual operations, welding quality is uneven, and after the rectifier is welded, various procedures are needed to further ensure the quality of products, such as flaw detection, postweld X-ray inspection of weld quality, weld destressing operation and other special processing. Secondly, the blade can produce the vibration of different degrees when the water conservancy diversion air current, because be the mode of fixed connection between blade and outer loop and the inner ring, the vibration that the blade produced leads to the blade to appear tired the breakage easily.
Disclosure of Invention
One object of the present invention is: aiming at the existing problems, the manufacturing process of the rectifier is provided, and the blades are connected with the outer ring and the inner ring in a non-welding mode, so that various subsequent special processing processes in product production are reduced, and the aims of reducing negative effects on the product caused by welding and special processes and improving the production efficiency are further fulfilled.
Another object of the invention is: in view of the above problems, a rectifier is provided, which can effectively alleviate or buffer the vibration generated by the blades during the air flow guiding, reduce the possibility of fatigue damage of the blades, and achieve the purpose of ensuring the service life of the blades and the rectifier.
The technical scheme adopted by the invention is as follows: a process for manufacturing a rectifier comprising an outer ring, an inner ring and blades between the outer ring and the inner ring, comprising the steps of:
s1, integrally processing an outer ring and blades to form a first component with the outer ring, the blades and internal allowance positioned in the outer ring and connected with the blades, wherein one end of each blade is integrally and fixedly connected with the outer ring, and the other end of each blade is integrally and fixedly connected with the internal allowance;
s2: after S1, cutting off the internal allowance of the first part to form a second part, and enabling the blade to reach the design size;
s3: and connecting the inner ring with the other end of the blade in the second part to finish the production and processing of the rectifier.
Further, in the step S1, the internal allowance supports the blade during the processing of the blade, so as to avoid the blade from generating large-amplitude vibration during the processing.
Further, in step S3, step S31: the inner ring is provided with a bus before installation, and the bus enables the inner ring not to be closed, so that blades and the inner ring can be conveniently connected one by one.
Further, after step S31, step S311: and after the blades are stably connected with the inner ring, correcting the shape of the inner ring, closing the bus and performing stress relief treatment on the bus position of the inner ring.
Further, in step S3, step S32: and a plurality of blade grooves are processed on the outer wall of the inner ring, and the blades in the second part are connected with the blade grooves.
Further, in step S32, step S321: the blade groove is filled with rubber for vibration reduction, and the rubber surrounds the blade.
A rectifier comprises an outer ring, an inner ring and a plurality of blades positioned between the outer ring and the inner ring, wherein the inner diameter of the outer ring is larger than the outer diameter of the inner ring; one end of each blade is connected with the inner wall of the outer ring, a blade groove is formed in the outer wall of the inner ring, the other end of each blade is connected with the blade groove, rubber is filled in the blade groove, and the rubber surrounds the blades.
Further, the manufacturing process of the rectifier is implemented, and the blades and the inner wall of the outer ring are of an integrated structure.
Further, a plurality of said blades are distributed along a circumferential array of the inner ring or/and the outer ring.
Further, the manufacturing process of the rectifier is implemented, the inner ring is of an annular structure formed by splicing a plurality of arc-shaped sections, and the bus is a splicing seam between the adjacent arc-shaped sections.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, through the integrated processing of the outer ring and the blades, the welding connection between the blades and the outer ring can be avoided, the original strength and metal phase of the material can be ensured, and the product quality can be improved;
2. according to the invention, as the blades are not required to be welded with the outer ring, more subsequent special process treatment is not required to be carried out on the product, and the production efficiency of the product is improved;
3. according to the rectifier disclosed by the invention, the blades are connected with the inner ring through the rubber, and the rubber has a vibration damping effect, so that the vibration generated when the blades guide airflow is effectively relieved or buffered, the possibility of fatigue and damage of the blades is reduced, and the purpose of ensuring the service lives of the blades and the rectifier is achieved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the construction of a first component and a second component of the present disclosure;
FIG. 2 is a cross-sectional structural view of a first component of the present disclosure;
FIG. 3 is a front view of a first component of the present disclosure;
FIG. 4 is a schematic cross-sectional view of an inner ring according to the present disclosure;
FIG. 5 is a schematic view of an inner ring according to the present disclosure;
FIG. 6 is a schematic diagram of the overall structure of the rectifier disclosed in the present invention;
the mark in the figure is: 1-part one; 11-an outer ring; 12-a blade; a-internal balance; 2-part two; 3-inner ring; 31-vane slots; 32-arc segment; 4-rubber.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
As shown in fig. 1 to 6, a manufacturing process of a rectifier, which includes an outer ring 11, an inner ring 3 and blades 12 between the outer ring 11 and the inner ring 3, includes the following steps:
s1, integrally processing an outer ring 11 and blades 12 to form a component I1 which is provided with the outer ring 11, the blades 12 and an internal allowance a which is positioned in the outer ring 11 and connected with the blades 12, wherein one end of each blade 12 is integrally and fixedly connected with the outer ring 11, and the other end of each blade 12 is integrally and fixedly connected with the internal allowance a; on the other hand, more subsequent special process treatment is not needed to be carried out on the product aiming at the welding position, and the production efficiency of the product is improved.
It should be noted that, in step S1, the rough material for forming the first component 1 may be a monolithic component with a corresponding thickness, and then the monolithic component is cut into a pillar base or a circular ring (hereinafter, referred to as a circular ring) matching the outer diameter of the outer ring 11, and in the case of a circular ring, it is required to ensure that the difference between the inner diameter and the outer diameter of the circular ring is greater than the thickness of the outer ring 11 plus the radial length of the blades 12, so as to ensure that sufficient material is available for processing the blades 12 and the outer ring 11.
Further, as shown in fig. 1, the integral processing of the outer ring 11 and the blades 12 is mainly represented by: after sizing, material is removed from between blades 12 and 12, resulting in part one 1.
Further, the machining thickness of the blade 12 and the inclination angle of the blade 12 are determined, the blade 12 is machined through lathe turning or milling by a milling machine, the thickness of the outer ring 11 is reserved, specifically, the machining size is measured into the ring on the basis of the outer diameter of the outer ring 11, and after the size needing to be machined is determined, the remaining size on the ring is the internal allowance a.
S2: after S1, as shown in FIG. 1, cutting off an inner margin a of the first part 1 to form a second part 2, wherein the second part 2 only has an outer ring 11 and a plurality of blades 12, and cutting off the inner margin a to enable the blades 12 to reach a designed size;
s3: connecting the inner ring 3 with the other end of the blade 12 in the second component 2 to finish the production and processing of the rectifier; it should be noted that the inner ring 3 is a preform and is not machined together with the outer ring 11 and the blades 12.
In this embodiment, in the step S1, the internal margin a supports the blade 12 when the blade 12 is machined, so as to avoid large-amplitude vibration of the blade 12 when the blade 12 is machined, and the stability of the whole body when the outer ring 11 and the blade 12 are machined in the step S1, and the dimensional accuracy and the inclination angle accuracy of the blade 12 both benefit from the design of the internal margin a, that is, on one hand, when the outer ring 11 and the blade 12 are machined, the internal margin a is supported, and the outer ring 11 with a certain thickness is supported, and the two are matched with each other, so as to ensure the stability of the whole body when the outer ring 11 and the blade 12 are integrally machined, and avoid the machining position from deviating; on the other hand, as for the blade 12, the blade 12 of the rectifier is generally a thin, wide and long component, the thinner the blade 12 is, the poorer the stability performance of the blade 12 itself is, that is, the thinner the blade 12 is, the more the blade 12 is prone to generate large amplitude vibration, which affects the processing precision of the blade 12, but the internal margin a disclosed in the present embodiment can restrain the blade 12, and the internal margin a restrains both ends of the blade 12 in cooperation with the outer ring 11, so that the vibration of the blade 12 is restrained, thereby reducing the vibration generated by the blade 12 during processing, improving the stability performance of the blade 12 itself, and ensuring the dimensional precision and the inclination angle precision of the blade 12.
In the present embodiment, in step S3, in order to facilitate mounting of the inner ring 3, step S31: the inner ring 3 is provided with a bus before installation, the bus is a line parallel to the axis of the inner ring 3 and a real existing line, the bus enables the inner ring 3 not to be closed, and the blades 12 and the inner ring 3 are conveniently connected one by one, concretely, when the inner ring 3 and the blades 12 are connected and assembled, the connecting position on the inner ring 3 is locally restricted, and the inner ring 3 can form self-restriction in a closed state, namely, the restriction generated by connecting a certain position on the inner ring 3 with the blades 12 can influence the restriction generated between other positions on the inner ring 3 and the blades 12, so that the assembly of the inner ring 3 is influenced; the bus is arranged on the inner ring 3, so that the inner ring 3 is in a non-closed state before and during assembly, and the inner ring 3 in the non-closed state cannot be restrained by itself, thereby achieving the purpose of conveniently assembling the inner ring 3.
Further, in the present embodiment, one embodiment of the inner ring 3 is as follows:
in the present embodiment, the inner ring 3 is of an integral structure, and when the inner ring 3 is assembled, the closed state of the inner ring 3 can be destroyed by cutting along a generatrix of the inner ring 3 by wire cutting, and then the inner ring 3 is assembled.
Further, in the present embodiment, as shown in fig. 5, another embodiment of the inner ring 3 is as follows:
in this embodiment, the inner ring 3 is formed by splicing at least two arc-shaped sections 32, in order to avoid unnecessary damage to the inner ring 3 caused by cutting the inner ring 3, a splicing line can be selected as a bus, and the splicing line is spliced and closed after the inner ring 3 is assembled, so that on one hand, the workload can be reduced, and on the other hand, the number of welding seams (the splicing of the arc-shaped sections 32 and the closed connection of the bus are generally connected in a welding mode) on the inner ring 3 can be reduced, thereby reducing the welding stress accompanying the welding seams.
In the present embodiment, after step S31, step S311: after the blades 12 are stably connected with the inner ring 3, the shape of the inner ring 3 is corrected, the bus is closed, and the bus position of the inner ring 3 is subjected to stress relief treatment, as described above, the bus position is usually processed by adopting a welding mode for closing the inner ring 3, welding stress exists in welding, and the stress relief treatment can improve the strength of the welding position on the inner ring 3 and reduce the possibility of cracks in the using process; of course, if the bus bar on the inner ring 3 is closed by other methods, the strength of the inner ring 3 and the stress relief of the closed position of the bus bar should be ensured.
In the present embodiment, in step S3, in order to facilitate determination of the connection position of the blades 12 to the inner ring 3 and to ensure the connection strength of the blades 12 to the inner ring 3, step S32: the blade grooves 31 with the same number as the blades 12 are processed on the outer wall of the inner ring 3, and the blade grooves 31 have groove bottoms, namely the blade grooves 31 do not penetrate through the ring wall of the inner ring 3, so that the strength of the inner ring 3 is ensured not to be damaged by the blade grooves 31; the blade 12 and the blade groove 31 in the second part 2 can be connected by clamping, plugging and the like, and in this embodiment, one end of the blade 12 is preferably inserted into the inner ring 3.
Further, in step S32, as described in the above background art, the blade 12 is usually a thin, wide and long component, the thinner the blade 12 is, the poorer the stability of the blade 12 itself is, that is, the thinner the blade 12 is, the more the blade 12 is likely to generate large amplitude vibration, the blade 12 may generate different degrees of vibration when guiding airflow, and the vibration generated by the blade 12 is likely to cause fatigue breakage of the blade 12 due to the fixed connection between the blade 12 and the outer ring 11 and the inner ring 3, and in order to solve the problem, as shown in fig. 6, step S321: the blade groove 31 is filled with rubber 4 for vibration damping, in this embodiment, the rubber 4 is silicone resin, has a good filling capability and also has a certain elasticity so as to have a certain buffering capability, and the rubber 4 surrounds the blade 12.
Specifically, when the blade groove 31 is machined, a gap between the groove wall of the blade groove 31 and the blade 12 can be considered, and the rubber 4 is filled between the blade 12 and the groove wall of the blade groove 31, so that the purpose of supporting the blade 12 can be achieved, and the vibration of the blade 12 can be restrained, namely when the blade 12 guides airflow, the blade 12 can be vibrated by the impact force generated by the airflow, one end of the blade 12 is restrained by the outer ring 11, if the other end of the blade 12 is not restrained by the outer ring, the other end of the blade 12 is in a free state, the vibration amplitude is free and large, and the connecting position of the blade 12 and the outer ring 11 is easily broken; if the other end does not have buffering, direct rigid contacts with the inner ring 3, the middle position of the blade 12 can generate low-amplitude high-frequency vibration, so that the two ends of the blade 12 are subjected to fatigue damage during long-time trial, the two problems are solved, and due to the design of the rubber 4, the rubber 4 can not only achieve the effects of supporting and restraining the blade 12, but also achieve the purpose of buffering vibration
Example 2
As shown in fig. 1-6, a rectifier comprises an outer ring 11, an inner ring 3 and a plurality of blades 12 positioned between the outer ring 11 and the inner ring 3, wherein the inner diameter of the outer ring 11 is larger than the outer diameter of the inner ring 3; one end of the vane 12 is connected with the inner wall of the outer ring 11, the outer wall of the inner ring 3 is provided with a vane slot 31, the problem and the number of the vane slot 31 are as described in embodiment 1, which is not described too much, the other end of the vane 12 is connected with the vane slot 31, the vane slot 31 is filled with rubber 4, the rubber 4 surrounds the vane 12, and the effect and the problem of the rubber 4 are also as described in embodiment 1, which is not described too much.
It should be noted that the distance between the groove wall of the vane groove 31 and the vane 12 should be equal, that is, the amount of the rubber 4 filled between each end surface of the vane 12 and the groove wall of the vane groove 31 is ensured to be equal, so that the vane 12 has the same damping capacity in the vibration direction.
Further, in order to ensure the equal distance between the groove wall of the vane groove 31 and the vane 12, the cross section of the vane groove 31 should be "V" shaped, and the "V" shape can make the end of the guide vane 12 connected with the vane groove 31 coincide with the center line of the vane groove 31, so as to realize the equal distance between the groove wall of the vane groove 31 and the vane 12.
In this embodiment, in the manufacturing process of the rectifier described in embodiment 1, the blades 12 and the inner wall of the outer ring 11 are of an integrated structure, so that on one hand, the original strength consistency and metal phase of the material are ensured, cracks caused by welding seams are not generated in use, and the product quality is improved; on the other hand, more subsequent special process treatment is not needed to be carried out on the product aiming at the welding position, and the production efficiency of the product is improved.
In this embodiment, the plurality of blades 12 are distributed along the circumferential array of the inner ring 3 or/and the outer ring 11, and the distribution of the blades 12 can make the blades 12 bear the same force when guiding airflow, so as to avoid that the local blades 12 bear too much or too little force and reduce the possibility that the local blades 12 are damaged.
In this embodiment, in the manufacturing process of the rectifier described in embodiment 1, the inner ring 3 has an annular structure formed by splicing a plurality of arc-shaped sections 32, the bus is a splicing seam between adjacent arc-shaped sections 32, and the splicing seam serving as the bus is spliced and closed after the inner ring 3 is assembled, so that on one hand, the workload can be reduced, and on the other hand, the number of welding seams (the splicing of the arc-shaped sections 32 and the closed connection of the bus are generally connected in a welding manner) on the inner ring 3 can be reduced, thereby reducing the welding stress accompanying the welding seams.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims (10)

1. A manufacturing process of a rectifier, which comprises an outer ring (11), an inner ring (3) and blades (12) positioned between the outer ring (11) and the inner ring (3), characterized in that: the method comprises the following steps:
s1, integrally processing an outer ring (11) and blades (12) to form a first component (1) with the outer ring (11), the blades (12) and an inner allowance (a) which is positioned in the outer ring (11) and connected with the blades (12), wherein one end of each blade (12) is fixedly connected with the outer ring (11) in an integrated manner, and the other end of each blade (12) is fixedly connected with the inner allowance (a) in an integrated manner;
s2: after S1, cutting off the internal allowance (a) of the first component (1) to form a second component (2) so that the blade (12) reaches the design size;
s3: and connecting the inner ring (3) with the other end of the blade (12) in the second part (2) to finish the production and processing of the rectifier.
2. The manufacturing process of the rectifier according to claim 1, wherein: in the step S1, the internal allowance (a) supports the blade (12) when the blade (12) is machined, so that the blade (12) is prevented from vibrating with large amplitude when being machined.
3. The manufacturing process of the rectifier according to claim 1, wherein: in step S3, step S31: the inner ring (3) is provided with a bus before installation, and the bus enables the inner ring (3) not to be closed, so that blades (12) and the inner ring (3) can be conveniently connected one by one.
4. The manufacturing process of the rectifier according to claim 3, wherein: after step S31, step S311: after the blades (12) are stably connected with the inner ring (3), the shape of the inner ring (3) is corrected, the generatrix is closed, and the position of the generatrix of the inner ring (3) is subjected to stress relief treatment.
5. The manufacturing process of the rectifier according to claim 3, wherein: in step S3, step S32: a plurality of blade grooves (31) are machined in the outer wall of the inner ring (3), and blades (12) in the second component (2) are connected with the blade grooves (31).
6. The manufacturing process of the rectifier according to claim 5, wherein: in step S32, step S321: the blade groove (31) is filled with rubber (4) for vibration reduction, and the rubber (4) surrounds the blade (12).
7. A rectifier comprises an outer ring (11), an inner ring (3) and a plurality of blades (12) positioned between the outer ring (11) and the inner ring (3), wherein the inner diameter of the outer ring (11) is larger than the outer diameter of the inner ring (3); the method is characterized in that: one end of each blade (12) is connected with the inner wall of the outer ring (11), a blade groove (31) is formed in the outer wall of the inner ring (3), the other end of each blade (12) is connected with the blade groove (31), rubber (4) is filled in the blade groove (31), and the rubber (4) surrounds the blades (12).
8. The rectifier of claim 7, wherein: -carrying out a manufacturing process of a rectifier according to any one of claims 1 to 6, the blades (12) being of a unitary structure with the inner wall of the outer ring (11).
9. The rectifier of claim 7, wherein: a plurality of the blades (12) are distributed along the circumferential array of the inner ring (3) or/and the outer ring (11).
10. The rectifier of claim 7, wherein: the manufacturing process of the rectifier according to claim 3 is implemented, the inner ring (3) is a ring structure formed by splicing a plurality of arc-shaped sections (32), and the bus bar is a splicing seam between adjacent arc-shaped sections (32).
CN202211298721.6A 2022-10-24 2022-10-24 Rectifier manufacturing process and rectifier Pending CN115523029A (en)

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Application Number Priority Date Filing Date Title
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DE19847632A1 (en) * 1997-10-29 1999-05-12 Karberg & Hennemann Kg Annular fan or ventilator, for portable room heaters, vehicle air fans e.t.c.
US20060067817A1 (en) * 2004-09-29 2006-03-30 Rolls-Royce Plc Damped assembly
US20100322763A1 (en) * 2009-06-18 2010-12-23 Techspace Aero S.A. Method for manufacturing vanes integrated into a ring and rectifier by the method
US20150354593A1 (en) * 2013-02-18 2015-12-10 Mitsubishi Heavy Industries, Ltd. Turbine nozzle and manufacturing method thereof
CA3131702A1 (en) * 2020-09-30 2022-03-30 Itp Next Generation Turbines, S.L. Guide vane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19847632A1 (en) * 1997-10-29 1999-05-12 Karberg & Hennemann Kg Annular fan or ventilator, for portable room heaters, vehicle air fans e.t.c.
US20060067817A1 (en) * 2004-09-29 2006-03-30 Rolls-Royce Plc Damped assembly
US20100322763A1 (en) * 2009-06-18 2010-12-23 Techspace Aero S.A. Method for manufacturing vanes integrated into a ring and rectifier by the method
US20150354593A1 (en) * 2013-02-18 2015-12-10 Mitsubishi Heavy Industries, Ltd. Turbine nozzle and manufacturing method thereof
CA3131702A1 (en) * 2020-09-30 2022-03-30 Itp Next Generation Turbines, S.L. Guide vane

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
张少平;苏廷铭;罗秋生;范小洪;: "航空发动机压气机径向间隙设计方法研究", 燃气涡轮试验与研究, no. 04, 15 November 2011 (2011-11-15), pages 25 - 31 *
徐自力等: "叶片结构强度与振动", vol. 1, 30 April 2018, 西安交通大学出版社, pages: 52 - 53 *
清华大学热能工程系动力机械与工程研究所等: "燃气轮机与燃气-蒸汽联合循环装置上", vol. 1, 31 August 2007, 中国电力出版社, pages: 198 - 200 *

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