Narrow flow channel impeller structure and compressor

Abstract

The embodiment of the utility model discloses a narrow-flow-channel impeller structure and a compressor. The narrow-flow-channel impeller structure comprises a cover disc, blades, a first spigot and a shaft disc. The cover disc and the blades are of an integrated structure, the mechanical strength of the narrow-flow-channel impeller structure is guaranteed, in the manufacturing process of the narrow-flow-channel impeller structure, the whole formed by the cover disc and the blades can be positioned through the first seam allowance and the rotary disc, then a circle of full welding can be formed at the first seam allowance, and a welding groove formed in the shaft disc is combined, so that the narrow-flow-channel impeller structure is manufactured. The blades close to the outlet side can be subjected to slotting welding through the welding grooves. By means of the arrangement, TIG + SMAW welding can be used for completing preparation of the narrow-flow-channel impeller structure, the strength of the narrow-flow-channel impeller structure is guaranteed, sinking weld meat is good, burnthrough and non-fusion are avoided, all blade weld joints are qualified in flaw detection, the appearance quality is good, and the production efficiency is high.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of impeller technology, and in particular to a narrow channel impeller structure and a compressor. Background Art

[0002] For the narrow channel impeller in the compressor, the traditional SMAW technology is not conducive to welding due to the small impeller outlet; in addition, the cover plate and shaft plate on the impeller inlet side are relatively thick and cannot be slotted and welded. Therefore, this type of impeller is mostly formed by electrospark machining. The manufacturing cycle of the impeller formed by electrospark machining is very long and the cost is very high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a narrow channel impeller structure.

[0005] A second aspect of the utility model provides a compressor.

[0006] In view of this, according to a first aspect of an embodiment of the present application, a narrow channel impeller structure is proposed, comprising:

[0007] A cover plate and blades, wherein the cover plate and the blades are an integrated structure;

[0008] a first stop formed at an outlet side of the cover plate and the blade;

[0009] A shaft disc is formed with a welding groove, and the shaft disc is welded to the cover disc and the blade through the welding groove and the first stop.

[0010] In a feasible implementation manner, a second stop is formed on the outlet side of the shaft disc, and the shaft disc is positioned and connected to the cover disc via the second stop and the first stop, and is welded at the first stop and the second stop.

[0011] In a feasible implementation manner, the shaft disc is welded to the blade through the welding groove.

[0012] In a feasible implementation manner, the included angle between the two walls of the bottom of the welding groove is 45° to 50°.

[0013] In a feasible implementation manner, a welding groove is formed on the air inlet side of the blade, and the blade is welded to the shaft disc through the welding groove.

[0014] In a feasible implementation manner, the groove angle of the welding groove is 50° to 70°.

[0015] In a feasible implementation manner, there are a plurality of welding grooves, each blade corresponds to one welding groove, and the welding grooves are opened along the radial direction of the shaft disc.

[0016] In a feasible implementation manner, the cover plate and the blades are integrally formed by a milling process.

[0017] According to a second aspect of an embodiment of the present application, a compressor is provided, comprising:

[0018] A narrow channel impeller structure as described in any of the above technical solutions.

[0019] In a feasible implementation manner, the compressor further comprises:

[0020] A rotating shaft is connected to the narrow channel impeller structure and is used to drive the narrow channel impeller structure to rotate.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] The narrow channel impeller structure provided in the embodiment of the present application includes a cover plate, blades, a first stop and a shaft plate. The cover plate and the blades are an integrated structure, which ensures the mechanical strength of the narrow channel impeller structure. During the preparation of the narrow channel impeller structure, the cover plate and the blades can be positioned as a whole through the first stop and the turntable, and then a full weld can be formed at the first stop. Combined with the welding groove opened on the shaft plate, the blades close to the outlet side can be slot welded through the welding groove. With such a configuration, the preparation of the narrow channel impeller structure can be completed by TIG+SMAW welding, which ensures the strength of the narrow channel impeller structure, with good weld meat, no burn-through, no unfused, all blade welds passing flaw detection, good appearance quality, and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of a narrow channel impeller structure at one angle according to an embodiment of the present application;

[0025] Figure 2 A schematic structural diagram of a narrow channel impeller structure of an embodiment provided in the present application from another angle;

[0026] Figure 3A schematic structural diagram of a cover plate and blades of a narrow channel impeller structure according to an embodiment of the present application;

[0027] Figure 4 A schematic structural diagram of a shaft disk of a narrow channel impeller structure of an embodiment provided in the present application at one angle;

[0028] Figure 5 A schematic structural diagram of a shaft disk of a narrow channel impeller structure of an embodiment provided in the present application from another angle;

[0029] Figure 6 A schematic structural diagram of a narrow channel impeller structure of an embodiment provided in the present application from another angle;

[0030] Figure 7 A schematic structural diagram of a shaft disk of a narrow channel impeller structure of an embodiment provided in the present application from another angle;

[0031] Figure 8 A schematic structural diagram of a cover plate and blades of a narrow channel impeller structure of an embodiment provided in the present application from another angle;

[0032] Fig. 9 A schematic structural diagram of the welding position of the blades and welding grooves of a narrow channel impeller structure provided in an embodiment of the present application;

[0033] Fig.10 A schematic structural diagram of the welding positions of the welding grooves and welding grooves of blades of a narrow channel impeller structure in an embodiment provided in the present application.

[0034] in, Figures 1 to 10 The corresponding relationship between the reference numerals and the component names is as follows:

[0035] 110 cover plate, 120 blade, 130 first stopper, 140 shaft plate, 150 welding groove, 160 second stopper, 170 welding groove. DETAILED DESCRIPTION

[0036] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0037] like Figures 1 to 10As shown, according to the first aspect of an embodiment of the present application, a narrow channel impeller structure is proposed, including: a cover plate 110 and blades 120, the cover plate 110 and the blades 120 are an integrated structure; a first stop 130, the first stop 130 is formed on the outlet side of the cover plate 110 and the blades 120; a shaft plate 140, a welding groove 150 is formed on the shaft plate 140, and the shaft plate 140 is welded to the cover plate 110 and the blades 120 through the welding groove 150 and the first stop 130.

[0038] The narrow channel impeller structure provided in the embodiment of the present application includes a cover plate 110, blades 120, a first stop 130 and a shaft plate 140. The cover plate 110 and the blades 120 are an integrated structure, which ensures the mechanical strength of the narrow channel impeller structure. During the preparation of the narrow channel impeller structure, the whole formed by the cover plate 110 and the blades 120 can be positioned with the turntable through the first stop 130, and then a full weld can be formed at the first stop 130. Combined with the welding groove 150 opened on the shaft plate 140, the blades 120 close to the outlet side can be slot welded through the welding groove 150. With such a configuration, the preparation of the narrow channel impeller structure can be completed by TIG+SMAW welding, which ensures the strength of the narrow channel impeller structure, with good weld meat, no burn-through, no unfused, all welds of the blades 120 passing the flaw detection, good appearance quality, and high production efficiency.

[0039] like Figure 5 As shown, in a feasible embodiment, a second stop 160 is formed on the outlet side of the shaft disc 140 , and the shaft disc 140 is positioned and connected to the cover disc 110 through the second stop 160 and the first stop 130 , and is welded at the first stop 130 and the second stop 160 .

[0040] In this technical solution, a second stop 160 can be formed on the shaft disc 140 near the outlet side. During the assembly process of the narrow channel impeller structure, the cover disc 110, the blades 120 and the shaft disc 140 can be aligned through the first stop 130 and the second stop 160 to facilitate the assembly of the narrow channel impeller structure. At the same time, the first stop 130 and the second stop 160 can be used for welding to improve welding efficiency.

[0041] In a feasible implementation manner, the shaft disc 140 is welded to the blade 120 through the welding groove 150. Such an arrangement can ensure the welding strength.

[0042] like Fig. 9 As shown, in a feasible embodiment, the angle between the two walls of the bottom of the welding groove 150 is 45° to 50°. Fig. 9 Here, α is the angle between the two walls of the bottom of the welding groove 150 .

[0043] In this technical solution, process parameters for slot welding are further provided. The angle between the two walls of the bottom of the welding slot 150 is 45° to 50°. With this arrangement, on the one hand, when the turntable uses the welding slot 150 to perform slot welding with the blade 120, the firmness, durability and aesthetics of the weld can be guaranteed, and the mechanical strength of the weld joint can be guaranteed; on the other hand, it helps to better fuse the welding materials and reduce the occurrence of welding defects such as pores, inclusions and other problems, thereby improving the welding quality.

[0044] like Figures 1 to 10 As shown, in a feasible implementation manner, a welding groove 170 is formed on the air inlet side of the blade 120 , and the blade 120 is welded to the shaft disc 140 through the welding groove 170 .

[0045] In this technical solution, considering that the thickness of the area of ​​the blade 120 on the air intake side opposite to the cover plate 110 and the shaft plate 140 is relatively large, in this case, during the preparation process of the blade 120, a welding groove 170 can be formed on the air intake side of the blade 120, and then the groove is used for welding, which can improve the connection strength between the blade 120 on the air intake side and the shaft plate 140, thereby ensuring the mechanical strength of the narrow channel impeller structure.

[0046] The narrow channel impeller structure provided in the embodiment of the present application has a welding groove 150 formed on the shaft disc 140, a welding groove 170 formed on the blade 120, and a first stop 130 and a second stop 160. Based on this, for the area with a smaller thickness of the shaft disc 140, the welding groove 150 can be used to perform slot welding with the blade 120, and for the area with a larger thickness of the shaft disc 140, the welding groove 170 can be used. Combined with the welding at the first stop 130 and the second stop 160, the preparation of the narrow channel impeller structure is convenient, and the production efficiency can be improved.

[0047] like Fig.10 As shown, in a feasible implementation, the groove angle of the welding groove 170 is 50° to 70°. Fig.10 The middle angle β is the groove angle of the welding groove 170 .

[0048] In this technical solution, specific parameters of the welding groove 170 are further provided. The groove angle of the welding groove 170 is 50° to 70°. Such a setting, on the one hand, can ensure the integrity and uniformity of the weld and avoid the occurrence of welding defects such as pores and inclusions, thereby improving the welding quality; on the other hand, it can make the weld more reliable and make the weld joint more evenly distributed when bearing loads, avoiding stress concentration, thereby improving the load-bearing capacity of the weld joint and further improving the quality of the narrow channel impeller structure.

[0049] like Figures 1 to 10As shown, in a feasible implementation manner, there are multiple welding grooves 150 , each blade 120 corresponds to a welding groove 150 , and the welding grooves 150 are opened along the radial direction of the shaft disc 140 .

[0050] In this technical solution, considering that there are multiple blades 120, each blade 120 corresponds to a welding groove 150, so that each blade 120 can be welded, thereby ensuring the strength of the narrow channel impeller structure.

[0051] In this technical solution, the welding groove 150 is opened along the radial direction of the shaft disc 140, which can increase the length of the weld and thus ensure the strength of the narrow channel impeller structure.

[0052] like Figures 1 to 10 As shown, in a feasible implementation manner, the cover plate 110 and the blades 120 are integrally formed by a milling process. This arrangement facilitates the preparation of the cover plate 110 and the blades 120 and can ensure the strength of the cover plate 110 and the blades 120.

[0053] Example

[0054] like Figures 1 to 10 As shown, the narrow channel impeller structure provided in the embodiment of the present application includes: a cover plate 110 and blades 120, the cover plate 110 and the blades 120 are an integrated structure; a first stop 130, formed on the outlet side of the cover plate 110 and the blades 120; a shaft plate 140, a welding groove 150 is formed on the shaft plate 140, and the shaft plate 140 is welded to the cover plate 110 and the blades 120 through the welding groove 150 and the first stop 130.

[0055] During the preparation process of the narrow channel impeller structure, the narrow channel impeller structure is suitable for materials such as FV520B, S520B, and KMN.

[0056] Among them, the cover plate 110 and the blade 120 of the narrow flow channel impeller structure need to be processed with a first stop 130 on the outlet side of the cover plate 110 and the blade 120; the blade 120 needs to be processed with a welding groove 170 on the inlet side of the blade 120, and the groove angle β of the welding groove 170 of the blade 120 is 50~70°.

[0057] The shaft disc 140 needs to be processed with a second stop 160 at the outlet side of the shaft disc 140, and a welding groove 150 is processed on the shaft disc 140. The angle α of the two side walls of the groove bottom of the welding groove 150 ranges from 45° to 50°.

[0058] During the welding process, the cover plate 110, the blades 120 and the shaft plate 140 are assembled, wherein the first stoppers 130 of the cover plate 110 and the blades 120 are spliced ​​with the second stoppers 160 of the shaft plate 140, and then the circumferential stoppers of the welded impeller are welded in one circle. The welding groove 170 is used for SMAW welding with the shaft plate 140. The welding groove 150 is used for TIG+SMAW welding with the blades 120.

[0059] The narrow channel impeller structure prepared by the embodiment of the present application has a one-time formed impeller weld, good weld deposition, no burn-through, no unfused welds, all 120 welds of the blades have passed the flaw detection, and have good appearance quality.

[0060] like Figures 1 to 10 As shown, according to the second aspect of the embodiment of the present application, a compressor is proposed, including: a narrow flow channel impeller structure as any of the above technical solutions.

[0061] The compressor provided in the embodiment of the present application includes a narrow channel impeller structure such as any of the above-mentioned technical solutions, so the compressor has all the beneficial effects of the narrow channel impeller structure of the above-mentioned technical solutions, which will not be elaborated here.

[0062] In a feasible implementation manner, the compressor further includes: a rotating shaft, which is connected to the narrow channel impeller structure and is used to drive the narrow channel impeller structure to rotate.

[0063] In this technical solution, the compressor may further include a rotating shaft, which passes through the narrow channel impeller structure and is used to drive the narrow channel impeller structure to rotate, and thus can be used as the rotating shaft of the compressor. The narrow channel impeller structure has low cost, is easy to prepare, and has high mechanical strength, thereby reducing the preparation cost and production cycle of the compressor, and can also extend the service life of the compressor.

[0064] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0066] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A narrow channel impeller structure, characterized in that: include: A cover plate and blades, wherein the cover plate and the blades are an integrated structure; a first stop formed at an outlet side of the cover plate and the blade; A shaft disc is formed with a welding groove, and the shaft disc is welded to the cover disc and the blade through the welding groove and the first stop.

2. The narrow channel impeller structure according to claim 1, characterized in that: A second stop is formed on the outlet side of the shaft disc, and the shaft disc is positioned and connected to the cover disc via the second stop and the first stop, and is welded at the first stop and the second stop.

3. The narrow channel impeller structure according to claim 1, characterized in that: The shaft disc is welded to the blade through the welding groove.

4. The narrow channel impeller structure according to claim 3, characterized in that: The included angle between the two wall surfaces of the bottom of the welding groove is 45° to 50°.

5. The narrow channel impeller structure according to claim 1, characterized in that: The blade is formed with a welding groove on the air inlet side, and the blade is welded to the shaft disc through the welding groove.

6. The narrow channel impeller structure according to claim 5, characterized in that: The groove angle of the welding groove is 50° to 70°.

7. The narrow channel impeller structure according to any one of claims 1 to 6, characterized in that: There are a plurality of welding grooves, each blade corresponds to one welding groove, and the welding grooves are opened along the radial direction of the shaft disc.

8. The narrow channel impeller structure according to any one of claims 1 to 6, characterized in that: The cover plate and the blades are integrally formed by a milling process.

9. A compressor, characterized in that: include: The narrow channel impeller structure according to any one of claims 1 to 8.

10. The compressor according to claim 9, characterized in that Also includes: A rotating shaft is connected to the narrow channel impeller structure and is used to drive the narrow channel impeller structure to rotate.

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