A manufacturing process of rectifier and rectifier

Abstract

The present invention discloses a manufacturing process of a rectifier and a rectifier, which relates to the field of blade rectifiers. The rectifier includes an outer ring, an inner ring and blades. S1: The outer ring and the blades are processed in an integrated manner to form a component one having an outer ring, blades and an internal margin located in the outer ring and connected to the blades; S2: The internal margin of component one is cut off to form component two, so that the blades reach the designed size; S3: The inner ring is connected to the other end of the blade in component two. For the rectifier, the connection position between the inner ring and the blades is filled with rubber. From a process point of view, the present invention does not use welding to connect the blades to the outer ring and the inner ring, thereby reducing a variety of special processing techniques in the subsequent production of the product, and further achieving the purpose of reducing the negative impact of welding and special processes on the product and improving production efficiency; from a structural point of view, it can effectively buffer the vibration generated by the blades when guiding the airflow, reduce the possibility of fatigue damage to the blades, and achieve the purpose of ensuring the service life.

Description

Technical Field

[0001] The invention relates to the field of blade rectifiers, in particular to a manufacturing process of a rectifier and a rectifier. Background Art

[0002] In the field of engines, especially in aviation engines, rectifiers are also called stationary rings, which are installed in the engine and mainly serve the purpose of adjusting or guiding airflow.

[0003] At present, the basic structure of the rectifier generally has an outer ring and an inner ring, and blades for guiding airflow are fixedly arranged between the outer ring and the inner ring. In the process of producing rectifiers, the rectifier manufacturers connect the blades to the outer ring and the inner ring by welding (electron beam welding). Since most welding operations are manual operations, the quality of welding is also uneven. In addition, after the rectifier is welded, it is necessary to carry out a variety of processes to further ensure the quality of the product, such as flaw detection, post-weld X-ray inspection of weld quality, weld stress relief operations and other special processing. In these processing processes, not only the production efficiency of the rectifier is extended, but also the quality of the rectifier may be negatively affected. Secondly, when the blades guide the airflow, they will produce different degrees of vibration. Since the blades are fixedly connected to the outer ring and the inner ring, the vibration generated by the blades can easily cause fatigue damage to the blades. Summary of the invention

[0004] One of the inventive objectives of the present invention is to provide a rectifier manufacturing process for the above-mentioned problems, which does not use welding to connect the blades to the outer ring and the inner ring, thereby reducing the various special processing techniques subsequent to product production, and further achieving the purpose of reducing the negative impact of welding and special processes on the product and improving production efficiency.

[0005] Another object of the present invention is to provide a rectifier to address the above-mentioned problem, which can effectively alleviate or buffer the vibration generated by the blades when guiding the airflow, reduce the possibility of fatigue damage to the blades, and achieve the purpose of ensuring the service life of the blades and the rectifier.

[0006] The technical solution adopted by the present invention is as follows: A manufacturing process of a rectifier, the rectifier includes an outer ring, an inner ring and blades located between the outer ring and the inner ring, comprising the following steps:

[0007] S1: The outer ring and the blade are integrally processed to form a component 1 having an outer ring, blades and an internal margin located inside the outer ring and connected to the blades, one end of the blade is integrally fixedly connected to the outer ring, and the other end of the blade is integrally fixedly connected to the internal margin;

[0008] S2: After S1, the inner margin of component one is cut off to form component two, so that the blade reaches the designed size;

[0009] S3: Connect the inner ring to the other end of the blade in component 2 to complete the production and processing of the rectifier.

[0010] Furthermore, in the step S1, the internal margin supports the blade when the blade is being processed, thereby preventing the blade from vibrating with a large amplitude during the processing.

[0011] Further, in step S3, step S31: the inner ring has a busbar before installation, and the busbar makes the inner ring unclosed, so as to facilitate connecting the blades to the inner ring one by one.

[0012] Further, after step S31, step S311: after the blade is stably connected to the inner ring, the shape of the inner ring is corrected, the generatrix is ​​closed and stress relief treatment is performed on the generatrix position of the inner ring.

[0013] Further, in step S3, step S32: a plurality of blade grooves are processed on the outer wall of the inner ring, and the blades in the second component are connected to the blade grooves.

[0014] Further, in step S32, step S321: the blade groove is filled with rubber for vibration reduction, and the rubber surrounds the blade.

[0015] A rectifier comprises an outer ring, an inner ring and a plurality of blades located between the outer ring and the inner ring, wherein the inner diameter of the outer ring is greater than the outer diameter of the inner ring; one end of the blade is connected to the inner wall of the outer ring, a blade groove is provided on the outer wall of the inner ring, the other end of the blade is connected to the blade groove and the blade groove is filled with rubber, and the rubber surrounds the blade.

[0016] Furthermore, when the manufacturing process of the rectifier is implemented, the blades and the inner wall of the outer ring are an integrated structure.

[0017] Furthermore, a plurality of the blades are distributed in a circumferential array along the inner ring and / or the outer ring.

[0018] Furthermore, in the manufacturing process of the rectifier, the inner ring is a ring structure formed by splicing a plurality of arc segments, and the busbar is a splicing seam between adjacent arc segments.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The present invention can avoid welding connection between blades and outer ring by integrating outer ring and blades, thus ensuring the original strength and metal phase of the material and improving product quality;

[0021] 2. Since the present invention does not need to weld the blades to the outer ring, it is not necessary to perform more subsequent special process treatments on the product, thereby improving the production efficiency of the product;

[0022] 3. The rectifier disclosed in the present invention connects the blades to the inner ring through rubber. The rubber has a vibration-absorbing effect, which effectively alleviates or buffers the vibration generated by the blades when guiding the airflow, reduces the possibility of fatigue damage to the blades, and achieves the purpose of ensuring the service life of the blades and the rectifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a simplified structural diagram of component 1 and component 2 disclosed in the present invention;

[0025] Figure 2 It is a cross-sectional structural schematic diagram of component 1 disclosed in the present invention;

[0026] Figure 3 It is a front view structural schematic diagram of component 1 disclosed in the present invention;

[0027] Figure 4 It is a schematic cross-sectional structural diagram of the inner ring disclosed in the present invention;

[0028] Figure 5 It is a front view structural schematic diagram of the inner ring disclosed in the present invention;

[0029] Figure 6 It is a schematic diagram of the overall structure of the rectifier disclosed in the present invention;

[0030] Markings in the figure: 1-component one; 11-outer ring; 12-blade; a-internal margin; 2-component two; 3-inner ring; 31-blade groove; 32-arc segment; 4-rubber. DETAILED DESCRIPTION

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0032] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0033] Example 1

[0034] like Figure 1-Figure 6 As shown, a manufacturing process of a rectifier, the rectifier includes an outer ring 11, an inner ring 3 and blades 12 located between the outer ring 11 and the inner ring 3, including the following steps:

[0035] S1: The outer ring 11 and the blades 12 are processed as a whole to form a component 1 having the outer ring 11, the blades 12 and an internal margin a located in the outer ring 11 and connected to the blades 12. One end of the blade 12 is fixedly connected to the outer ring 11, and the other end of the blade 12 is fixedly connected to the internal margin a. The outer ring 11 and the blades 12 are processed as a whole to avoid welding connection between the blades 12 and the outer ring 11. On the one hand, the original strength consistency and metal phase of the material are guaranteed, and cracks caused by welds will not occur during use, thereby improving product quality. On the other hand, there is no need to perform more subsequent special process treatments on the product for the welding position, thereby improving product production efficiency.

[0036] What needs to be explained about step S1 is that the rough material for processing to form component 1 can be selected as an integral component of corresponding thickness, and then the integral component is cut into a column base or a circular ring (hereinafter explained as a circular ring) that matches the outer diameter of the outer ring 11. If it is a circular ring, it is necessary to ensure that the difference between the inner and outer diameters of the circular ring is greater than the thickness of the outer ring 11 plus the radial length of the blade 12 to ensure that there is sufficient material for the blade 12 and the outer ring 11 to supply processing.

[0037] Furthermore, if Figure 1 As shown, the integrated processing of the outer ring 11 and the blades 12 is mainly manifested in that after the processing size is determined, the material between the blades 12 is removed to obtain a component 1.

[0038] Furthermore, the processing thickness and the inclination angle of the blade 12 are determined, and the blade 12 is processed by lathe turning or milling, retaining the thickness of the outer ring 11. Specifically, the outer diameter of the outer ring 11 is used as the size basis, and the processing size is measured inside the ring. After the size to be processed is determined, the remaining size on the ring is the internal allowance a.

[0039] S2: After S1, such as Figure 1 As shown, the internal margin a of the component 1 is cut off to form the component 2 2, and the structure of the component 2 2 only has an outer ring 11 and a plurality of blades 12. The internal margin a is cut off so that the blades 12 reach the designed size;

[0040] S3: Connect the inner ring 3 to the other end of the blade 12 in the component 2 to complete the production and processing of the rectifier; it should be noted that the inner ring 3 is a prefabricated part and is not processed together with the outer ring 11 and the blade 12.

[0041] In the present embodiment, in the step S1, the internal margin a supports the blade 12 when processing the blade 12, so as to avoid large-amplitude vibration of the blade 12 during processing. The overall stability of the outer ring 11 and the blade 12 during processing in the step S1, as well as the dimensional accuracy and inclination angle accuracy of the blade 12 are all benefited from the design of the internal margin a, that is, on the one hand, when processing the outer ring 11 and the blade 12, the internal margin a is supported, and the outer ring 11 with a certain thickness is supported, and the two cooperate with each other to ensure the overall stability of the outer ring 11 and the blade 12 during integrated processing, thereby avoiding the increase of the outer ring 11 and the blade 12. On the other hand, for the blade 12, the blade 12 of the rectifier is usually a thin, wide and long component. The thinner the blade 12, the worse its own stability performance, that is, the thinner the blade 12, the more likely it is that the blade 12 will vibrate greatly, and the vibration will affect the processing accuracy of the blade 12. The internal margin a disclosed in this embodiment can constrain the blade 12. The internal margin a cooperates with the outer ring 11 to constrain the two ends of the blade 12, so that the vibration of the blade 12 is constrained, thereby reducing the vibration generated by the blade 12 during processing, improving its own stability performance, and ensuring the dimensional accuracy and inclination angle accuracy of the blade 12.

[0042] In this embodiment, in step S3, in order to facilitate the installation of the inner ring 3, step S31: the inner ring 3 has a busbar before installation, and the busbar is a line parallel to the axis of the inner ring 3 and a real line. The busbar makes the inner ring 3 not closed, so it is convenient to connect the blades 12 to the inner ring 3 one by one. Specifically, when the inner ring 3 is connected and assembled with the blades 12, the connection position on the inner ring 3 will be subject to local constraints, and the inner ring 3 will form self-constraints when it is in a closed state, that is, the constraints generated by the connection between a certain position on the inner ring 3 and the blade 12 will affect the constraints generated between other positions on the inner ring 3 and the blade 12, thereby affecting the assembly of the inner ring 3; a busbar is set 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 a non-closed state will not have self-constraints, thereby achieving the purpose of facilitating the assembly of the inner ring 3.

[0043] Furthermore, in this embodiment, an implementation of the inner ring 3 is as follows:

[0044] In this embodiment, the inner ring 3 is an integral structure, and when assembling the inner ring 3 , the inner ring 3 can be cut along the generatrix of the inner ring 3 by wire cutting to destroy the closed state of the inner ring 3 , and then the inner ring 3 can be assembled.

[0045] Furthermore, in this embodiment, if Figure 5 As shown, another implementation of the inner ring 3 is as follows:

[0046] In this embodiment, the inner ring 3 is composed of at least two arc segments 32 spliced ​​together. In order to avoid cutting the inner ring 3 and causing unnecessary damage to the inner ring 3, a splicing line can be selected as the busbar, and the splicing line is spliced ​​and closed after the inner ring 3 is assembled. On the one hand, it can reduce the workload, and on the other hand, it can reduce the number of welding seams on the inner ring 3 (the splicing of the arc segments 32 and the closed connection of the busbar are usually connected by welding), thereby reducing the welding stress associated with the welding seams.

[0047] In this embodiment, after step S31, step S311: after the blade 12 is stably connected to the inner ring 3, the shape of the inner ring 3 is corrected, the busbar is closed and the busbar position of the inner ring 3 is stress-relieved. As mentioned above, the closing of the inner ring 3 is usually performed by welding the busbar position. There is welding stress 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 during use. Of course, if other methods are used to close the busbar on the inner ring 3, the strength of the inner ring 3 should also be guaranteed and the closed position of the busbar should be stress-relieved.

[0048] In this embodiment, in step S3, in order to facilitate determination of the connection position between the blade 12 and the inner ring 3 and ensure the connection strength between the blade 12 and the inner ring 3, step S32: blade grooves 31 equal in number to the blades 12 are processed on the outer wall of the inner ring 3, and the blade grooves 31 have a groove bottom, that is, the blade grooves 31 do not penetrate the ring wall of the inner ring 3, thereby ensuring that the strength of the inner ring 3 is not destroyed by the blade grooves 31; the blades 12 and the blade grooves 31 in the component 22 can be connected by snap-fitting, plug-in, etc. In this embodiment, one end of the blade 12 is preferably inserted into the inner ring 3.

[0049] Further, in step S32, as described in the background technology above, the blade 12 is usually a thin, wide and long component. The thinner the blade 12 is, the worse its stability is, that is, the thinner the blade 12 is, the easier it is for the blade 12 to vibrate greatly. When the blade 12 guides the airflow, it will vibrate to varying degrees. Since the blade 12 is fixedly connected to the outer ring 11 and the inner ring 3, the vibration generated by the blade 12 is likely to cause fatigue damage to the blade 12. In order to solve this problem, Figure 6 As shown, step S321: the blade groove 31 is filled with rubber 4 for vibration reduction. In this embodiment, the rubber 4 is silicone resin, which has good filling ability and certain elasticity, so it has a certain buffering ability. The rubber 4 surrounds the blade 12.

[0050] Specifically, when processing the blade groove 31, it can be considered that there is a gap between the groove wall of the blade groove 31 and the blade 12, and the rubber 4 is filled between the blade 12 and the groove wall of the blade groove 31, which can achieve the purpose of supporting the blade 12 and restraining the vibration of the blade 12, that is, when the blade 12 guides the airflow, it will be affected by the impact force generated by the airflow and thus vibrate, and one end of the blade 12 is constrained by the outer ring 11. If the other end is not supported or constrained, the other end of the blade 12 is in a free state, and the vibration amplitude is free and large, which can easily cause the connection position between the blade 12 and the outer ring 11 to break; if the other end is not buffered and directly and rigidly contacts the inner ring 3, the middle position of the blade 12 will produce low-amplitude and high-frequency vibration, which will cause fatigue damage to both ends of the blade 12 under long-term trial use. To solve these two problems, thanks to the design of the rubber 4, the rubber 4 can both support and constrain the blade 12 and achieve the purpose of buffering vibration.

[0051] Example 2

[0052] like Figure 1-Figure 6 As shown, a rectifier includes an outer ring 11, an inner ring 3 and a plurality of blades 12 located 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 blade 12 is connected to the inner wall of the outer ring 11, and a blade groove 31 is provided on the outer wall of the inner ring 3. The problems solved by the blade groove 31 and the number thereof are as described in Example 1, and will not be elaborated in detail here. The other end of the blade 12 is connected to the blade groove 31 and the blade groove 31 is filled with rubber 4, and the rubber 4 surrounds the blade 12. The effects produced by the rubber 4 and the problems solved by the rubber 4 are also as described in Example 1, and will not be elaborated in detail here.

[0053] It should be noted that the spacing between the groove wall of the blade groove 31 and the blade 12 should be equal, that is, the amount of rubber 4 filled between each end surface of the blade 12 and the groove wall of the blade groove 31 should be equal, so that the blade 12 has the same vibration damping ability in the vibration direction.

[0054] Furthermore, in order to ensure that the spacing between the groove wall of the blade groove 31 and the blade 12 is equal, the cross-section of the blade groove 31 should be "V"-shaped. The "V"-shape can make the end of the guide blade 12 connected to the blade groove 31 coincide with the center line position of the blade groove 31, thereby achieving equal spacing between the groove wall of the blade groove 31 and the blade 12.

[0055] In this embodiment, the manufacturing process of the rectifier described in Example 1 is implemented, and the blades 12 and the inner wall of the outer ring 11 are an integrated structure. On the one hand, the original strength consistency and metal phase of the material are guaranteed, and cracks caused by welds will not occur during use, thereby improving product quality; on the other hand, there is no need to perform more subsequent special process treatments on the product at the welding position, thereby improving product production efficiency.

[0056] In this embodiment, the plurality of blades 12 are distributed in a circumferential array along the inner ring 3 and / or the outer ring 11. The distribution of the blades 12 enables each blade 12 to be subjected to the same force when guiding the airflow, thereby avoiding excessive or insufficient force on a local blade 12 and reducing the possibility of damage to the local blade 12.

[0057] In this embodiment, the manufacturing process of the rectifier described in Example 1 is implemented, and the inner ring 3 is a ring structure formed by splicing a plurality of arc segments 32, and the busbar is a splicing seam between adjacent arc segments 32. The splicing line of the busbar is spliced ​​and closed after the inner ring 3 is assembled. On the one hand, it can reduce the workload, and on the other hand, it can reduce the number of welding seams on the inner ring 3 (the splicing of the arc segments 32 and the closed connection of the busbar are usually connected by welding), thereby reducing the welding stress associated with the welding seams.

[0058] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A manufacturing process for a rectifier, the rectifier comprising an outer ring (11), an inner ring (3) and blades (12) located between the outer ring (11) and the inner ring (3), characterized in that: The following steps are involved: S1: The outer ring (11) and the blade (12) are integrally processed to form a component (1) having an outer ring (11), a blade (12), and an internal margin (a) located inside the outer ring (11) and connected to the blade (12), one end of the blade (12) is integrally fixedly connected to the outer ring (11), and the other end of the blade (12) is integrally fixedly connected to the internal margin (a); the internal margin (a) is supported during the processing of the blade, and cooperates with the outer ring (11) to support the blade (12), so as to prevent the blade (12) from vibrating with a large amplitude during the processing; S2: After S1, the inner margin (a) of the first component (1) is cut off to form the second component (2), so that the blade (12) reaches the designed size; S3: Connecting the inner ring (3) to the other end of the blade (12) in component two (2), thereby completing the production and processing of the rectifier.

2. The manufacturing process of the rectifier according to claim 1, characterized in that: In step S3, step S31: the inner ring (3) has a busbar before installation, and the busbar makes the inner ring (3) not closed, so as to facilitate connecting the blades (12) to the inner ring (3) one by one.

3. The manufacturing process of the rectifier according to claim 2, characterized in that: After step S31, step S311: after the blade (12) and the inner ring (3) are stably connected, the shape of the inner ring (3) is corrected, the generatrix is ​​closed and stress relief treatment is performed on the generatrix position of the inner ring (3).

4. The manufacturing process of the rectifier according to claim 2, characterized in that: In step S3, step S32: a plurality of blade grooves (31) are machined on the outer wall of the inner ring (3), and the blades (12) in the second component (2) are connected to the blade grooves (31).

5. The manufacturing process of the rectifier according to claim 4, characterized in that: 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).

6. A rectifier, comprising an outer ring (11), an inner ring (3) and a plurality of blades (12) located between the outer ring (11) and the inner ring (3), wherein the inner diameter of the outer ring (11) is greater than the outer diameter of the inner ring (3); a manufacturing process for a rectifier according to any one of claims 1 to 5, characterized in that: One end of the blade (12) is connected to the inner wall of the outer ring (11), and the blade (12) and the inner wall of the outer ring (11) are an integrated structure; a blade groove (31) is provided on the outer wall of the inner ring (3), the other end of the blade (12) is connected to the blade groove (31), and the blade groove (31) is filled with rubber (4), and the rubber (4) surrounds the blade (12).

7. The rectifier according to claim 6, characterized in that: The plurality of blades (12) are distributed in a circumferential array along the inner ring (3) and / or the outer ring (11).

8. The rectifier according to claim 6, characterized in that: The inner ring (3) is an annular structure formed by splicing a plurality of arc segments (32), and the generatrix is ​​a splicing seam between adjacent arc segments (32).

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