Compressor impeller and impeller mounting structure

Abstract

The invention discloses a gas compressor impeller and an impeller mounting structure. The gas compressor impeller comprises a plurality of flow dividing type blades on the outer surface of an impeller body. The front boss and the rear boss are arranged at the front end and the rear end of the impeller body respectively, a middle shaft penetrates through the center of the impeller body and comprises an installation pin rod, a pin rod hole for the installation pin rod to penetrate through is formed in the surface of the rear boss in a penetrating mode, and a penetrating hole for the installation pin rod to penetrate through is formed in the surface of the rear end of the middle shaft in an opening and closing mode. The mounting pin rod is inserted between the middle shaft and the rear boss; by adopting the innovative connection mode and design, the impeller can be rapidly separated from or combined with the middle shaft, a large number of fasteners or the whole gas compressor do not need to be disassembled, the disassembly and assembly efficiency of the impeller is greatly improved, and the maintenance cost is reduced; and meanwhile, the disassembly and assembly structure is suitable for different types of compressor impellers and middle shafts, has wide applicability, and solves the problems that an existing compressor impeller is complex to disassemble and assemble, insufficient in stability, high in maintenance cost and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressor impellers, and in particular relates to a compressor impeller and an impeller mounting structure. Background Art

[0002] The compressor is an important part of the turbine engine. Its main function is to compress the air through multi-stage impellers (including rotor impellers and stator impellers) to produce high-pressure gas for the engine. As a key component, the performance of the compressor impeller directly affects the overall efficiency and stability of the engine. However, in the existing compressor impeller design, the impeller disassembly and assembly process is often complicated and time-consuming, which not only increases the maintenance cost, but also may affect the operating efficiency of the engine;

[0003] In the traditional compressor impeller design, the impeller is usually fixed directly to the central shaft by fastening bolts or other connection methods. This design requires the removal of a large number of fasteners when replacing or repairing the impeller, which is cumbersome and time-consuming. The complicated disassembly and assembly process not only increases the labor and time costs, but may also cause damage to parts due to improper operation, further increasing maintenance costs. For this reason, the present invention proposes a compressor impeller and an impeller mounting structure. Summary of the invention

[0004] The object of the present invention is to provide a compressor impeller and an impeller mounting structure to solve the problem raised in the above background technology that in the traditional compressor impeller design, the impeller is usually directly fixed to the central shaft by fastening bolts or other connection methods. This design requires the removal of a large number of fasteners when replacing or repairing the impeller, which is cumbersome and time-consuming. The complicated disassembly and assembly process not only increases the labor and time costs, but may also cause damage to parts due to improper operation, further increasing the maintenance cost problem.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a compressor impeller, comprising a plurality of splitter blades on the outer surface of an impeller body;

[0006] A front boss and a rear boss are respectively arranged at the front and rear ends of the impeller body, and a central axis runs through the center of the impeller body.

[0007] An impeller mounting structure using the compressor impeller includes:

[0008] A mounting pin rod, a pin rod hole for the mounting pin rod to pass through is formed through the surface of the rear boss, a through hole for the mounting pin rod to pass through is formed through the rear end surface of the middle shaft, and the mounting pin rod is inserted between the middle shaft and the rear boss;

[0009] And an annular retaining ring structure arranged on the rear end surface of the impeller body, including an annular inner groove opened inside the rear end of the impeller body, a spring installed in the annular inner groove and an annular movable seat, the annular movable seat is movably installed in the annular inner groove through multiple springs, and an annular telescopic ring is fixed on the front end surface of the annular movable seat, and the end of the annular telescopic ring penetrates to the rear surface of the impeller body and extends to the pin rod hole.

[0010] Preferably, a plurality of spring grooves are formed on the rear end surface of the annular movable seat, and the ends of the springs are inserted into the spring grooves.

[0011] Preferably, two side sliding blocks are symmetrically fixed on the circumferential surface of the annular movable seat, and the inner wall of the annular inner groove is symmetrically provided with two side sliding grooves corresponding to the side sliding blocks, and the side sliding blocks are slidably located in the side sliding grooves.

[0012] Preferably, an annular rubber ring is sleeved on the surface at the center of the mounting pin rod, and a plurality of integrated positioning protrusions are symmetrically provided on the surface of the annular rubber ring, and an annular positioning groove corresponding to the positioning protrusion is opened on the inner wall of the perforation, and the end of the positioning protrusion is squeezed into the annular positioning groove.

[0013] Preferably, an annular embedding groove is provided on the surface at the center of the mounting pin rod, and an annular rubber ring is embedded in the annular embedding groove, and a plurality of cavities corresponding to the positioning protrusions are provided inside the annular rubber ring.

[0014] Preferably, the front end of the central axis passes through to the front of the front boss, and the front end of the central axis is provided with a front anti-slip structure.

[0015] Preferably, the front anti-slip structure includes an anti-slip pin, the front end surface of the central axis is provided with an end hole for the anti-slip pin to pass through, the anti-slip pin passes through the end hole, the front end surface of the central axis is also provided with a movable hole communicating with the end hole, and a movable clamping head is movably installed in the movable hole, the surface of the anti-slip pin is provided with an external clamping groove corresponding to the movable clamping head, the rear end of the movable clamping head is clamped into the external clamping groove, the front end of the movable clamping head passes through the front end surface of the central axis and is fixed with an end plate, side sliding cavities are provided on the inner walls on both sides of the movable hole, and a spring 2 and a side sliding strip are arranged in the side sliding cavity, one end of the side sliding strip is welded and fixed to the movable clamping head, and the spring 2 is located on one side surface of the side sliding strip.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts an innovative connection method and design, so that the impeller can be quickly separated or combined with the central shaft without disassembling a large number of fasteners or the entire compressor, which greatly improves the disassembly and assembly efficiency of the impeller and reduces maintenance costs; at the same time, the disassembly and assembly structure is suitable for different types of compressor impellers and central shafts, has a wide range of applicability, and solves the problems of complex disassembly and assembly of existing compressor impellers, insufficient stability, and high maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle B area;

[0020] Figure 4 For the present invention Figure 2 A partial enlarged view of the middle C area;

[0021] Figure 5 For the present invention Figure 1 A partial enlarged view of the middle A area;

[0022] Figure 6 For the present invention Figure 2 A partial enlarged view of the D area in the middle;

[0023] In the figure: 1. impeller body; 11. splitter blade; 12. front boss; 13. rear boss; 131. pin hole; 2. center axis; 21. end hole; 22. through hole; 23. annular positioning groove; 3. mounting pin; 31. annular rubber ring; 32. positioning protrusion; 33. cavity; 34. annular embedded groove; 4. annular retaining ring structure; 41. annular inner groove; 42. spring one; 43. annular movable seat; 44. annular telescopic ring; 45. side slide block; 46. side slide groove; 5. front anti-slip structure; 51. anti-slip pin; 52. end plate; 53. movable hole; 54. movable clamp; 55. outer slot; 56. side slide cavity; 57. spring two; 58. side slide strip. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figures 1 to 4 , which is the first embodiment of the present invention, and this embodiment provides a technical solution: a compressor impeller, comprising

[0027] The plurality of splitter blades 11 on the outer surface of the impeller body 1 adopts a splitter blade structure, the flow path is designed with a constant mid-diameter, the inlet airflow angle of the blade is designed to be 90°, and the outlet blade is a backward curved blade, so that the gas flow path is smoother and the efficiency of gas compression is improved;

[0028] A front boss 12 and a rear boss 13 are respectively arranged at the front and rear ends of the impeller body 1, and a central axis 2 runs through the center of the impeller body 1.

[0029] An impeller installation structure using the above compressor impeller comprises:

[0030] The mounting pin 3 is provided with a pin hole 131 through which the mounting pin 3 passes, and the rear end surface of the central shaft 2 is provided with a through hole 22 through which the mounting pin 3 passes. The mounting pin 3 is inserted between the central shaft 2 and the rear boss 13, so that the central shaft 2 and the impeller body 1 can be quickly mounted.

[0031] And an annular retaining ring structure 4 is arranged on the rear end surface of the impeller body 1, including an annular inner groove 41 opened inside the rear end of the impeller body 1, a spring 42 and an annular movable seat 43 installed in the annular inner groove 41, the annular movable seat 43 is movably installed in the annular inner groove 41 through multiple springs 42, and an annular telescopic ring 44 is fixed to the front end surface of the annular movable seat 43, the end of the annular telescopic ring 44 penetrates the rear surface of the impeller body 1 and extends to the pin rod hole 131, which can wrap half of the pin rod hole 131, thereby effectively blocking and limiting the installation pin rod 3, ensuring the plug-in stability of the installation pin rod 3 to the rear boss 13 and the central axis 2, and ensuring the installation stability of the entire impeller.

[0032] In this embodiment, preferably, a plurality of spring grooves are opened on the rear end surface of the annular movable seat 43, and the ends of the springs 1 42 are inserted into the spring grooves, so that the plurality of springs 1 42 can be limited to prevent the springs 1 42 from deviating.

[0033] In this embodiment, preferably, two side sliding blocks 45 are symmetrically fixed on the circumferential surface of the annular movable seat 43, and two side sliding grooves 46 corresponding to the side sliding blocks 45 are symmetrically provided on the inner wall of the annular inner groove 41. The side sliding blocks 45 slide in the side sliding grooves 46, so that the annular movable seat 43 will not directly slip off from the opening of the annular inner groove 41, thereby ensuring the stability of the annular movable seat 43 when it moves back and forth, and can also play a certain guiding role to prevent the annular movable seat 43 from rotating.

[0034] The cam 32 is provided with a plurality of protrusions 32 on the inner wall of the through hole 22, and the protrusions 32 are provided with a plurality of protrusions 32 on the inner wall of the through hole 22. The protrusions 32 are ...

[0035] In summary, when the actual impeller body 1 is installed on the central axis 2, it is only necessary to first put the impeller body 1 on the central axis 2 and align the pin hole 131 with the through hole 22, and then squeeze the annular telescopic ring 44 toward the rear end surface of the impeller body 1, so that the annular telescopic ring 44 no longer blocks the pin hole 131. At this time, the installation pin 3 can be inserted into the pin hole 131 and pass through the through hole 22 to achieve the connection between the installation pin 3 and the rear boss 13 and the central axis 2, and then release the annular telescopic ring 44. Under the push of the spring 1 42, the annular movable seat 43 rebounds with the annular telescopic ring 44, and finally the annular telescopic ring 44 can block the installation pin 3 to limit the position, and the installation between the impeller body 1 and the central axis 2 can be quickly completed.

[0036] Example 2

[0037] See also Figures 1 to 6 , which is the second embodiment of the present invention, is based on the previous embodiment, and the difference is that the front anti-slip structure 5 can be set to play a certain anti-slip effect on the central axis 2, preventing the front boss 12 from sliding off the front end of the central axis 2.

[0038] Specifically, the front end of the central axis 2 passes through the front of the front boss 12, and the front end of the central axis 2 is provided with a front anti-slip structure 5, the front anti-slip structure 5 includes an anti-slip pin 51, and the front end surface of the central axis 2 is provided with an end hole 21 for the anti-slip pin 51 to pass through. The anti-slip pin 51 passes through the end hole 21, which can effectively limit the central axis 2 and prevent the front boss 12 from sliding off the front end of the central axis 2. The front end surface of the central axis 2 is also provided with a movable hole 53 communicating with the end hole 21, and a movable clamping head 54 is movably installed in the movable hole 53. The surface of the anti-slip pin 51 is provided with an external clamping groove 55 corresponding to the movable clamping head 54. The rear end of the movable clamping head 54 is clamped into the external clamping groove 55, which can limit the anti-slip pin 51 and ensure that the anti-slip pin 51 will not fall off by itself. The front end of the movable clamping head 54 passes through the front end surface of the central axis 2 and is fixed with an end plate 52 The second spring 57 is located on one side surface of the side slide bar 58, so that when the anti-dropping pin 51 is inserted into the end hole 21, the rear end of the active clamping head 54 will be squeezed into the active hole 53 first, so that the side slide bar 58 will move sideways and compress the second spring 57 until the anti-dropping pin 51 can smoothly pass through the end hole 21, and the rear end of the active clamping head 54 can be stuck in the outer card groove 55, so that the active clamping head 54 can play a positioning role for the anti-dropping pin 51. When the anti-dropping pin 51 is pulled out later, it is only necessary to push the anti-dropping pin 51 with force so that the rear end of the active clamping head 54 is squeezed into the active hole 53 again, without affecting the normal disassembly and assembly of the central shaft 2 and the impeller body 1.

[0039] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressor impeller, characterized in that: include A plurality of splitter blades (11) on the outer surface of the impeller body (1); A front boss (12) and a rear boss (13) are respectively arranged at the front and rear ends of the impeller body (1), and a central axis (2) passes through the center of the impeller body (1).

2. An impeller mounting structure used in a compressor impeller as claimed in claim 1, characterized in that: include A mounting pin (3), the surface of the rear boss (13) is penetrated with a pin hole (131) for the mounting pin (3) to pass through, the rear end surface of the middle shaft (2) is penetrated with a through hole (22) for the mounting pin (3) to pass through, and the mounting pin (3) is inserted between the middle shaft (2) and the rear boss (13); and an annular retaining ring structure (4) arranged on the rear end surface of the impeller body (1), comprising an annular inner groove (41) opened inside the rear end of the impeller body (1), a spring (42) installed in the annular inner groove (41) and an annular movable seat (43), wherein the annular movable seat (43) is movably installed in the annular inner groove (41) via a plurality of springs (42), and an annular telescopic ring (44) is fixed to the front end surface of the annular movable seat (43), and the end of the annular telescopic ring (44) penetrates the rear surface of the impeller body (1) and extends to the pin hole (131).

3. An impeller mounting structure according to claim 2, characterized in that: The rear end surface of the annular movable seat (43) is provided with a plurality of spring grooves, and the ends of the spring 1 (42) are inserted into the spring grooves.

4. An impeller mounting structure according to claim 2, characterized in that: Two side slide blocks (45) are symmetrically fixed on the circumferential surface of the annular movable seat (43), and two side slide grooves (46) corresponding to the side slide blocks (45) are symmetrically opened on the inner wall of the annular inner groove (41), and the side slide blocks (45) are slidably located in the side slide grooves (46).

5. The impeller mounting structure according to claim 2, characterized in that: An annular rubber ring (31) is sleeved on the center surface of the mounting pin (3), and a plurality of integral positioning protrusions (32) are symmetrically provided on the surface of the annular rubber ring (31); an annular positioning groove (23) corresponding to the positioning protrusion (32) is formed on the inner wall of the through hole (22), and the end of the positioning protrusion (32) is squeezed into the annular positioning groove (23).

6. An impeller mounting structure according to claim 5, characterized in that: An annular embedding groove (34) is provided on the surface at the center of the mounting pin (3), and the annular rubber ring (31) is embedded in the annular embedding groove (34). A plurality of cavities (33) corresponding to the positioning protrusions (32) are also provided inside the annular rubber ring (31).

7. An impeller mounting structure according to claim 2, characterized in that: The front end of the central axis (2) passes through the front of the front boss (12), and the front end of the central axis (2) is provided with a front anti-slip structure (5).

8. An impeller mounting structure according to claim 7, characterized in that: The front anti-slip structure (5) comprises an anti-slip pin (51), the front end surface of the middle shaft (2) is provided with an end hole (21) for the anti-slip pin (51) to pass through, the anti-slip pin (51) passes through the end hole (21), the front end surface of the middle shaft (2) is also provided with a movable hole (53) communicating with the end hole (21), and a movable clamp (54) is movably installed in the movable hole (53), and the surface of the anti-slip pin (51) is provided with an external clamping groove (55) corresponding to the movable clamp (54) The rear end of the movable clamp (54) is clamped into the outer clamping groove (55), the front end of the movable clamp (54) penetrates to the front end surface of the central axis (2) and is fixed with an end plate (52), the inner walls on both sides of the movable hole (53) are provided with side sliding cavities (56), and the side sliding cavities (56) are provided with spring 2 (57) and side sliding strips (58), one end of the side sliding strip (58) is welded and fixed to the movable clamp (54), and the spring 2 (57) is located on one side surface of the side sliding strip (58).

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