Additive manufacturing of integrated diffuser

Abstract

The utility model provides additive manufacturing integrated expansion pipe, this integrated expansion pipe includes: expansion pipe upper cover, expansion pipe lower cover fixed connection with expansion pipe upper cover one side, form the passageway between expansion pipe upper cover and expansion pipe lower cover, expansion pipe entrance, the passageway intercommunication formed between expansion pipe upper cover and expansion pipe lower cover of expansion pipe entrance, the passageway other end inner wall between expansion pipe upper cover and expansion pipe lower cover installs first axial flow blade and second axial flow blade. Expansion pipe upper cover, expansion pipe lower cover, first axial flow blade, second axial flow blade and expansion pipe entrance are integrated structure, do not have any welding joint, and adopt metal additive manufacturing (3D printing) integrated molding, and the expansion pipe after molding only needs to the local processing of welding position, need not mould and control shape frock, fixture, can reduce manufacturing cost greatly, shorten development cycle, guarantee structural size stability.

Description

Technical Field

[0001] This utility model relates to the field of diffuser technology, and is an additively manufactured integrally formed diffuser. Background Technology

[0002] As a key component in fluid machinery, the structural integrity and dimensional accuracy of the diffuser tube directly affect the fluid transport efficiency and the overall performance of the equipment.

[0003] Traditional diffuser tubes are manufactured using sheet metal forming and welding processes. This requires welding the various sheet metal components together and using tooling for positioning to ensure the dimensions after welding. Due to the large welding area and the high requirements for consistency in the flow channel area of ​​the diffuser tube, manufacturing is quite difficult. Furthermore, a large number of welding tests need to be completed in the early stages of development, and the tooling fixtures also need to undergo multiple iterations, resulting in high initial equipment investment costs. Utility Model Content

[0004] This invention addresses the challenges of traditional diffuser tube manufacturing, which involves sheet metal forming and welding. This process requires welding individual sheet metal components together and using tooling for positioning to ensure post-weld dimensions. The large welding area and the high consistency requirements for the flow channel area in diffuser tubes make manufacturing difficult. Furthermore, the extensive welding tests and multiple iterations of tooling fixtures in the early stages of development result in high initial equipment costs. Therefore, this invention provides an additive manufacturing method for a one-piece molded diffuser tube.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides an additively manufactured integrally formed diffuser tube, the additively manufactured integrally formed diffuser tube comprising:

[0007] A diffuser tube top cover, one side of which is fixedly connected to a diffuser tube bottom cover, and a channel is formed between the diffuser tube top cover and the diffuser tube bottom cover;

[0008] The diffuser inlet is connected to the channel formed between the diffuser upper cover and the diffuser lower cover, and a first axial flow blade and a second axial flow blade are installed on the inner wall of the other end of the channel formed between the diffuser upper cover and the diffuser lower cover.

[0009] Furthermore, the diffuser tube upper cover, diffuser tube lower cover, first axial flow blade, second axial flow blade, and diffuser tube inlet are integrally formed by additive manufacturing process.

[0010] Furthermore, the channel formed between the upper cover and the lower cover of the diffuser tube is a flow channel.

[0011] Furthermore, the cross-sectional area of ​​the flow channel gradually increases along the fluid flow direction.

[0012] Furthermore, the cross-sectional area at the inlet of the flow channel connected to the diffuser is smaller than the cross-sectional area at the other end of the flow channel.

[0013] Furthermore, the inner wall of the top end of the diffuser tube cover is fixedly connected to the inner wall of the top end of the diffuser tube cover via a first axial flow blade.

[0014] Furthermore, the inner wall of the top end of the diffuser tube cover is fixedly connected to the inner wall of the top end of the diffuser tube cover via a second axial flow blade, and a first axial flow blade is provided on one side of the second axial flow blade.

[0015] Furthermore, the diffuser inlet has a hollow tubular structure.

[0016] Furthermore, the first axial flow blade has an arc-shaped structure.

[0017] Furthermore, the second axial flow blade has an arc-shaped structure.

[0018] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0019] The positive and progressive effects of this utility model are as follows:

[0020] The aforementioned additive manufacturing integrated diffuser tube has an integrated structure consisting of the diffuser tube top cover, diffuser tube bottom cover, first axial flow blade, second axial flow blade, and diffuser tube inlet, without any welding seams. Furthermore, it is manufactured using metal additive manufacturing (3D printing). After molding, the diffuser tube only requires local processing of the welding parts, eliminating the need for molds, shape control tooling, and fixtures. This significantly reduces manufacturing costs, shortens the development cycle, and ensures structural dimensional stability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application.

[0022] Figure 1 This is an exploded structural diagram of the integrally molded diffuser tube of this utility model.

[0023] Figure 2 This is a schematic diagram of the integral molding structure of the integrally molded diffuser tube of this utility model.

[0024] Figure 3 This is a three-dimensional structural diagram of the other side of the integrally molded diffuser tube of this utility model.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. First axial flow blade; 2. Second axial flow blade; 3. Diffuser top cover; 4. Diffuser bottom cover; 5. Diffuser inlet. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0029] like Figure 1-3 As shown, the additively manufactured integrally formed diffuser tube includes:

[0030] A diffuser tube upper cover 3 is fixedly connected to a diffuser tube lower cover 4 on one side, and a channel is formed between the diffuser tube upper cover 3 and the diffuser tube lower cover 4.

[0031] The diffuser inlet 5 is connected to the channel formed between the diffuser upper cover 3 and the diffuser lower cover 4. The inner wall of the other end of the channel formed between the diffuser upper cover 3 and the diffuser lower cover 4 is equipped with a first axial flow blade 1 and a second axial flow blade 2.

[0032] The diffuser tube upper cover 3, diffuser tube lower cover 4, first axial flow blade 1, second axial flow blade 2 and diffuser tube inlet 5 are integrally formed structures without any welding seams. They are integrally formed by metal additive manufacturing (3D printing). After the diffuser tube is formed, only the welding parts need to be locally processed. No molds, shape control tooling and fixtures are required, which can greatly reduce manufacturing costs, shorten the development cycle and ensure the stability of structural dimensions.

[0033] The diffuser tube upper cover 3, diffuser tube lower cover 4, first axial flow blade 1, second axial flow blade 2, and diffuser tube inlet 5 are integrally formed using metal additive manufacturing (3D printing) technology. This eliminates the need for sheet metal molds and positioning fixtures. After integral forming using metal 3D printing technology, there is only one part. Existing 3D printing equipment can produce 60-120 diffuser tubes at a time, with a production cycle of only 3-5 days (production quantity and cycle vary depending on the equipment). Once the process parameters are stable, the yield rate of the diffuser tube can reach over 98%. After the diffuser tube is printed, only the fitting position of the inlet needs to be processed before subsequent processing steps can be carried out. Compared with sheet metal welding forming process, 3D printed diffuser tubes have absolute technical advantages in terms of development cycle, manufacturing cost, and process stability.

[0034] The channel formed between the upper cover 3 and the lower cover 4 of the diffuser tube is a flow channel.

[0035] The cross-sectional area of ​​the flow channel gradually increases along the direction of fluid flow.

[0036] The cross-sectional area at the inlet 5 of the flow channel is smaller than the cross-sectional area at the other end of the flow channel.

[0037] The inner wall of the top end of the diffuser tube upper cover 3 is fixedly connected to the inner wall of the top end of the diffuser tube lower cover 4 through the first axial flow blade 1.

[0038] The inner wall of the top end of the diffuser tube cover 3 is fixedly connected to the inner wall of the top end of the diffuser tube cover 4 through the second axial flow blade 2, and a first axial flow blade 1 is provided on one side of the second axial flow blade 2.

[0039] The diffuser inlet 5 has a hollow tubular structure.

[0040] The first axial flow blade 1 has an arc-shaped structure, and the second axial flow blade 2 has an arc-shaped structure. The arc-shaped structure of the first axial flow blade 1 and the second axial flow blade 2 can reduce the frictional resistance when the fluid flows through the blade, guide and stabilize the fluid, avoid turbulent phenomena such as eddies and deflections in the channel, and ensure that the fluid flows stably along the preset path.

[0041] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0042] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. An additively manufactured integrally formed diffuser, characterized by, The additively manufactured integral diffuser tube includes: A diffuser tube upper cover (3) is fixedly connected to a diffuser tube lower cover (4) on one side, and a channel is formed between the diffuser tube upper cover (3) and the diffuser tube lower cover (4); The diffuser inlet (5) is connected to the channel formed between the diffuser upper cover (3) and the diffuser lower cover (4). The inner wall of the other end of the channel formed between the diffuser upper cover (3) and the diffuser lower cover (4) is equipped with a first axial flow blade (1) and a second axial flow blade (2).

2. The additively manufactured integrally contoured diffuser of claim 1, wherein: The diffuser tube upper cover (3), diffuser tube lower cover (4), first axial flow blade (1), second axial flow blade (2), and diffuser tube inlet (5) are integrally formed by additive manufacturing process.

3. The additively manufactured integrally contoured diffuser of claim 1, wherein: The channel formed between the upper cover (3) and the lower cover (4) of the diffuser tube is a flow channel.

4. The additively manufactured integral diffuser tube as described in claim 3, characterized in that: The cross-sectional area of ​​the flow channel gradually increases along the direction of fluid flow.

5. The additively manufactured integral diffuser tube as described in claim 3, characterized in that: The cross-sectional area at the inlet (5) of the flow channel is smaller than the cross-sectional area at the other end of the flow channel.

6. The additively manufactured integral diffuser tube as described in claim 1, characterized in that: The inner wall of the top end of the diffuser tube upper cover (3) is fixedly connected to the inner wall of the top end of the diffuser tube lower cover (4) through the first axial flow blade (1).

7. The additively manufactured integral diffuser tube as described in claim 1, characterized in that: The inner wall of the top end of the diffuser tube upper cover (3) is fixedly connected to the inner wall of the top end of the diffuser tube lower cover (4) through the second axial flow blade (2), and a first axial flow blade (1) is provided on one side of the second axial flow blade (2).

8. The additively manufactured integral diffuser tube as described in claim 1, characterized in that: The diffuser inlet (5) has a hollow tubular structure.

9. The additively manufactured integrally formed diffuser tube as described in claim 1, characterized in that: The first axial flow blade (1) has an arc-shaped structure.

10. The additively manufactured integral diffuser tube as described in claim 1, characterized in that: The second axial flow blade (2) has an arc-shaped structure.

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