A compressor

Abstract

This invention proposes a compressor comprising an outer ring and an inner ring, wherein the inner ring is located inside the outer ring and the outer ring surrounds the inner ring. The inner ring includes a first sub-inner ring, a second sub-inner ring, and multiple connecting interfaces. The connecting interfaces are located on the outer circumferential surface of the first sub-inner ring and / or the second sub-inner ring. The first sub-inner ring is connected to the second sub-inner ring through the connecting interfaces. The compressor also includes a sealing component located on the outer circumferential surface of the first sub-inner ring and / or the second sub-inner ring. The sealing component is connected to the first sub-inner ring and / or the second sub-inner ring and covers the connecting interfaces. After the sealing component is connected to the first sub-inner ring and / or the second sub-inner ring, a smooth connection is formed between the sealing component and the outer circumferential surface of the first sub-inner ring and / or the second sub-inner ring. This invention maintains a smooth flow channel surface and reduces energy loss during airflow.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, specifically to a compressor. Background Technology

[0002] The structure of a gas turbine compressor test piece mainly includes an intake chamber, intake cylinder, compressor cylinder, and exhaust cylinder. Air enters the intake cylinder through the intake chamber, then enters the compressor cylinder where it is pressurized by the blades, and finally exits through the exhaust cylinder. During airflow, it is necessary to maintain the integrity and smoothness of the flow channels in each cylinder as much as possible to reduce flow losses. The intake cylinder mainly consists of an upper inner ring, a lower inner ring, an upper outer ring, a lower outer ring, and support ribs. The support ribs are welded between the inner and outer rings, and the upper and lower outer rings and the upper and lower inner rings are connected by screws on the split surface. When connecting the upper and lower inner rings, the screws pass through the lower surface of the complete flow channel, leaving holes in the flow channel surface, resulting in an incomplete and uneven flow channel surface, which affects airflow and increases flow losses.

[0003] Traditional techniques typically involve inserting a round bar into the hole, then approximately cutting off the bar to make it nearly flush with the beveled edge of the flow channel hole. Welding or riveting is then performed to ensure the flow channel surface is nearly intact and minimize damage. During disassembly, tools are used to break and clean the welded or riveted portions, allowing the bar and screws to be removed. However, this traditional approach has the following technical problems: First, the cutting of the round bar uses a cutting machine to create a near-planar cut, which does not conform to the original flow channel profile and negatively impacts aerodynamic performance. Second, the welding or riveting method for sealing the round bar is inconvenient for repeated disassembly.

[0004] To address the aforementioned technical problems, existing technical solutions, such as CN216519128U, propose an anti-loosening mechanism for a gas turbine filler component. This mechanism includes a countersunk screw hole located on the horizontal split surface of the intake cylinder, a split screw located within the countersunk screw hole, a filler component, and a locking component. The top surface of the filler component is an arc surface matching the curvature of the horizontal split surface. The top of the filler component has a mounting hole, and the side wall of the filler component has a locking block. The countersunk screw hole has a locking groove matching the locking block, and the locking block is movably engaged with the locking groove. The bottom of the filler component has a first locking groove, and the top surface of the split screw has a second locking groove. The top of the locking component is engaged with the first locking groove, and the bottom of the locking component is engaged with the second locking groove. This technical solution eliminates the need for punching or spot welding for the filler component, resulting in a simple structure, quick and easy assembly and disassembly, non-destructive installation, and easy reuse.

[0005] However, none of the existing technical solutions can completely solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to solve the aforementioned technical problems.

[0007] To achieve the above objectives, this utility model proposes a compressor, including an outer ring and an inner ring. The inner ring is located inside the outer ring, and the outer ring surrounds the inner ring. The inner ring includes a first sub-inner ring, a second sub-inner ring, and multiple connecting interfaces. The connecting interfaces are located on the outer peripheral surface of the first sub-inner ring and / or the second sub-inner ring. The first sub-inner ring is connected to the second sub-inner ring through the connecting interfaces. The compressor also includes a sealing component, which is located on the outer peripheral surface of the first sub-inner ring and / or the second sub-inner ring. The sealing component is connected to the first sub-inner ring and / or the second sub-inner ring and covers the connecting interfaces. After the sealing component is connected to the first sub-inner ring and / or the second sub-inner ring, a smooth connection is formed between the sealing component and the outer peripheral surface of the first sub-inner ring and / or the second sub-inner ring.

[0008] Furthermore, in a cross-section perpendicular to the compressor axial direction, the sealing component forms a circle with the outer contour lines of the first sub-inner ring and / or the second sub-inner ring.

[0009] Furthermore, the sealing component has a plate-like structure.

[0010] Furthermore, multiple connection interfaces are distributed along the axial direction of the inner ring on the outer peripheral surface of the first sub-inner ring and / or the second sub-inner ring.

[0011] Furthermore, the inner ring also includes an inner ring groove, which is located on the outer peripheral surface of the first sub-inner ring and / or the second sub-inner ring. The plurality of connection interfaces are located on the wall surface of the inner ring groove, and the sealing component is embedded in the inner ring groove.

[0012] Furthermore, the inner ring groove extends along the axial direction of the inner ring; along the axial direction of the inner ring, one end of the inner ring groove is connected to the air inlet end of the inner ring, and the other end of the inner ring groove does not extend to the air outlet end of the inner ring.

[0013] Furthermore, the inner ring includes a fitting groove, and the sealing component includes a flange, wherein the sealing component is embedded in the inner ring groove by the flange and the fitting groove cooperating with each other.

[0014] Furthermore, the fitting groove is located on the inner wall surface of the inner annular groove, the flange is located at the edge where the sealing component fits into the inner annular groove, and the fitting groove surrounds the flange.

[0015] Furthermore, the inner ring also includes a first fixing hole, a portion of which is located on the end face of the air inlet end of the inner ring, and another portion of which is located on the end face of the sealing member near the air inlet end of the inner ring. The end face of the sealing member near the air inlet end of the inner ring is flush with the end face of the air inlet end of the inner ring. A first fixing member is provided in the first fixing hole, which can restrict the relative movement between the sealing member and the inner ring along the axial direction of the inner ring.

[0016] Furthermore, the compressor also includes a second fixing member and a third fixing member, the inner ring also includes a plurality of second fixing holes and a third fixing hole, and the sealing member also includes a plurality of fourth fixing holes. The plurality of second fixing holes are located on the wall surface of the inner ring groove and tend to be distributed along the axial direction of the inner ring. The plurality of fourth fixing holes are all located on the contact surface between the sealing member and the inner ring and tend to be distributed along the axial direction of the inner ring. The second fixing holes and the fourth fixing holes both extend circumferentially along the inner ring. The second fixing member is partially located in the second fixing hole, and the second fixing member is partially located in the fourth fixing hole. The third fixing hole is partially located in the inner ring and partially located in the sealing member. One end of the third fixing hole is flush with the end face of the air inlet end of the inner ring. The third fixing hole extends along the axial direction of the inner ring, and the third fixing member is located inside the third fixing hole.

[0017] Furthermore, the connection surface between the first sub-inner ring and the second sub-inner ring is the mid-section of the compressor.

[0018] Furthermore, the connection interface, the sealing component, and the inner ring groove are all located on the outer circumferential surface of the first sub-inner ring.

[0019] Furthermore, the first sub-inner ring and the second sub-inner ring are connected by an inner ring fixing bolt, and the connection interface is a bolt hole corresponding to the inner ring fixing bolt.

[0020] Furthermore, the sealing component is provided with reinforcing ribs, which are located on the side of the sealing component that contacts the inner ring.

[0021] By applying the above-described technical solution of this utility model, at least the following technical effects are achieved:

[0022] 1. This utility model uses a sealing component that is consistent with the inner ring flow channel line to cover the connection interface of the first sub-inner ring and the second sub-inner ring, which not only keeps the flow channel surface smooth but also reduces the energy loss of air flow.

[0023] 2. This utility model achieves the connection between the sealing component and the inner ring by embedding the sealing component into the inner ring groove located on the outer circumferential surface of the inner ring. This method facilitates installation and disassembly.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 A schematic diagram of the overall connection interface in one embodiment is shown;

[0027] Figure 2 An assembly effect diagram of a sealing component according to an embodiment is provided;

[0028] Figure 3 A structural schematic diagram of the sealing component in one embodiment is shown;

[0029] Figure 4 Showed Figure 1 Enlarged image of the letter "A" in the image;

[0030] Figure 5 A schematic diagram of the end of the sealing component in one embodiment is shown;

[0031] Figure 6 A schematic diagram of the end of the inner annular groove in one embodiment is shown in the figure;

[0032] Figure 7 Showed Figure 6 A magnified view of the letter "B" in the image;

[0033] Figure 8 An axial schematic diagram of the first fixing hole in a sealing component in one embodiment is shown;

[0034] Figure 9 A schematic diagram of the end of the first fixing hole in a sealing component in one embodiment is shown;

[0035] Figure 10 A partial view of the sealing component in one embodiment is provided;

[0036] Figure 11 Showed Figure 10 The "CC" cross-section diagram in the image;

[0037] Figure 12 A schematic diagram of the intake cylinder inner ring without an embedded sealing component is shown in another embodiment;

[0038] Figure 13 An assembly effect diagram of the sealing component in another embodiment is presented;

[0039] Figure 14 A diagram illustrating the installation process of the sealing component in another embodiment is provided;

[0040] Figure 15 A schematic diagram of the fourth fixing hole in one embodiment is shown;

[0041] Figure 16 A structural schematic diagram of the first fastener in one embodiment is shown;

[0042] Figure 17 A structural schematic diagram of the second fastener in one embodiment is shown;

[0043] Figure 18 A structural schematic diagram of the third fastener in one embodiment is shown;

[0044] Figure 19 A structural schematic diagram of the inner ring fixing bolt in one embodiment is shown;

[0045] Reference numerals: 1. Outer ring; 2. Inner ring; 21. First sub-inner ring; 22. Second sub-inner ring; 23. Connecting interface; 24. Inner ring groove; 25. Fitting groove; 26. First fixing hole; 27. Second fixing hole; 28. Third fixing hole; 3. Sealing component; 31. Flange; 32. Fourth fixing hole; 101. First fixing member; 102. Second fixing member; 103. Third fixing member; 104. Inner ring fixing bolt. Detailed Implementation

[0046] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] The present invention will be further described in detail below with reference to specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention.

[0048] Example 1

[0049] According to one aspect of the present invention, a compressor is provided, comprising an outer ring 1 and an inner ring 2, wherein the inner ring 2 is located inside the outer ring 1, and the outer ring 1 surrounds the inner ring 2. The inner ring 2 includes a first sub-inner ring 21, a second sub-inner ring 22, and a plurality of connecting interfaces 23. The connecting interfaces 23 are located on the outer peripheral surface of the first sub-inner ring 21 and / or the second sub-inner ring 22. The first sub-inner ring 21 is connected to the second sub-inner ring 22 through the connecting interfaces 23. The compressor further includes a sealing component 3, which is located on the outer peripheral surface of the first sub-inner ring 21 and / or the second sub-inner ring 22. The sealing component 3 is connected to the first sub-inner ring 21 and / or the second sub-inner ring 22 and covers the connecting interfaces 23. After the sealing component 3 is connected to the first sub-inner ring 21 and / or the second sub-inner ring 22, the sealing component 3 forms a smooth connection with the outer peripheral surface of the first sub-inner ring 21 and / or the second sub-inner ring 22. In a cross-section perpendicular to the compressor's axial direction, the sealing component 3 forms a circle with the outer contours of the first sub-inner ring 21 and / or the second sub-inner ring 22. The inner ring 2 also includes an inner ring groove 24 located on the outer circumferential surface of the first sub-inner ring 21 and / or the second sub-inner ring 22. Multiple connection interfaces 23 are located on the wall surface of the inner ring groove 24, and the sealing component 3 is embedded in the inner ring groove 24. The connection surface between the first sub-inner ring 21 and the second sub-inner ring 22 is the mid-plane of the compressor. The connection interfaces 23, the sealing component 3, and the inner ring groove 24 are all located on the outer circumferential surface of the first sub-inner ring 21.

[0050] The inner ring groove 24 extends along the axial direction of the inner ring 2; along the axial direction of the inner ring 2, one end of the inner ring groove 24 communicates with the air inlet end of the inner ring 2, and the other end of the inner ring groove 24 does not extend to the air outlet end of the inner ring 2. The first sub-inner ring 21 and the second sub-inner ring 22 are connected by an inner ring fixing bolt 104, and the connection interface 23 is a bolt hole corresponding to the inner ring fixing bolt 104. A plurality of the connection interfaces 23 are distributed along the axial direction of the inner ring 2 on the outer peripheral surface of the first sub-inner ring 21 and / or the second sub-inner ring 22.

[0051] Specifically, such as Figure 1-11 and Figure 19As shown, the first sub-inner ring 21 and the second sub-inner ring 22 are connected by an inner ring fixing bolt 104. The connection interface 23 is a bolt hole for fixing the first sub-inner ring 21 and the second sub-inner ring 22, wherein the inner ring fixing bolt 104 is recessed into the bolt hole. After the inner ring fixing bolt 104 is installed, the upper surface of the inner ring fixing bolt 104 is lower than the upper end face of the connection interface 23 to ensure that the sealing component 3 can be installed in the inner ring groove. The inner ring groove 24 is located on the outer peripheral surface of the first sub-inner ring 21, and multiple connection interfaces 23 are located on the inner wall surface of the inner ring groove 24. The sealing component 3 is precisely embedded in the inner ring groove, the connection interface is covered by the sealing component 3, and the edge of the sealing component 3 is tightly connected to the edge of the inner ring groove 24 to form a smooth connection.

[0052] In other embodiments, the inner ring groove 24 may also be located on the outer peripheral surface of the second sub-inner ring 22. Furthermore, the inner ring 2 may also include two inner ring grooves 24, which are respectively located on the outer peripheral surfaces of the first sub-inner ring 21 and the second sub-inner ring 22.

[0053] The sealing component 3 has a plate-like structure. The sealing component 3 is provided with reinforcing ribs, which are located on the side of the sealing component 3 that contacts the inner ring 2. Specifically, the reinforcing ribs are welded longitudinally and transversely to the side of the sealing component 3 that contacts the inner ring 2, greatly improving the rigidity of the sealing component 3.

[0054] The inner ring 2 includes a fitting groove 25, and the sealing component 3 includes a flange 31. The sealing component 3 is embedded in the inner ring groove 24 through the engagement of the flange 31 and the fitting groove 25. The fitting groove 25 is located on the inner wall surface of the inner ring groove 24, and the flange 31 is located at the edge where the sealing component 3 engages with the inner ring groove 24. The fitting groove 25 surrounds the flange 31. The inner ring 2 also includes a first fixing hole 26. A portion of the first fixing hole 26 is located on the end face of the air inlet end of the inner ring 2, and another portion is located on the end face of the sealing component 3 near the air inlet end of the inner ring 2. The end face of the sealing component 3 near the air inlet end of the inner ring 2 is flush with the end face of the air inlet end of the inner ring 2. A first fixing member 101 is provided in the first fixing hole 26, which can restrict the relative movement of the sealing component 3 and the inner ring 2 along the axial direction of the inner ring 2.

[0055] Specifically, such as Figure 5-11 and Figure 15 As shown, flange 31 is located on the side perpendicular to the extending direction of sealing member 3, and fitting groove 25 is located on the inner wall surface of inner ring groove perpendicular to the axial direction of inner ring 2. Sealing member 3 is installed in inner ring groove along the direction pointing to fitting groove 25.

[0056] After installation, the flange 31 is located in the fitting groove 25, and the sealing component 3 is tightly engaged with the inner ring groove 24. The first fixing hole 26 extends axially along the inner ring, and the portion of the first fixing hole 26 located in the inner ring is located in the sealing component 3. The first fixing member 101 is an internal hexagon screw, and there are at least two of them. The large end of the screw is recessed into the first fixing hole 26, and the end face of the large end of the internal hexagon screw is flush with or extends into the axial surface of the inner ring of the cylinder. The large end of the first fixing member 101 can restrict the relative displacement between the sealing component 3 and the inner ring 2 along the axial direction of the inner ring 2.

[0057] By applying the above-described technical solution of this utility model, at least the following technical effects are achieved:

[0058] 1. This utility model uses a sealing component that is consistent with the inner ring flow channel line to cover the connection interface of the first sub-inner ring and the second sub-inner ring, which not only keeps the flow channel surface smooth but also reduces the energy loss of air flow.

[0059] 2. This utility model achieves the connection between the sealing component and the inner ring by embedding the sealing component into the inner ring groove located on the outer circumferential surface of the inner ring. This method facilitates installation and disassembly.

[0060] Example 2

[0061] This implementation and Figure 1-11 The embodiment shown is basically the same as that of Example 1, except that the connection between the sealing component 3 and the inner ring 2 after the sealing component 3 is embedded in the inner ring groove 24 is different. In this embodiment, the compressor further includes a second fixing member 102 and a third fixing member 103. The inner ring 2 also includes a plurality of second fixing holes 27 and a third fixing hole 28. The sealing member 3 further includes a plurality of fourth fixing holes 32. The plurality of second fixing holes 27 are located on the wall surface of the inner ring groove 24 and tend to be distributed along the axial direction of the inner ring 2. The plurality of fourth fixing holes 32 are all located on the contact surface between the sealing member 3 and the inner ring 2 and tend to be distributed along the axial direction of the inner ring 2. The second fixing holes 27 and the fourth fixing holes 32 both extend circumferentially along the inner ring 2. The second fixing member 102 is partially located in the second fixing hole 27 and partially located in the fourth fixing hole 32. The third fixing hole 28 is partially located in the inner ring 2 and partially located in the sealing member 3. One end of the third fixing hole 28 is flush with the end face of the air inlet end of the inner ring 2. The third fixing hole 28 extends along the axial direction of the inner ring 2. The third fixing member 103 is located inside the third fixing hole 28.

[0062] Specifically, such as Figure 16-18 As shown, the second fixing member 102 is a fixing pin, which is composed of a cylindrical segment and a frustum segment. The third fixing member 103 has a cuboid structure, but the shape of the third fixing member 103 includes, but is not limited to, a cuboid. Figure 12-14As shown, the second fixing hole 27 is provided on the wall surface extending axially along the inner ring groove 24. First, the cylindrical section of the second fixing member 102 is fixed in the second fixing hole 27, and then the frustum section of the second fixing member 102 is inserted into the fourth fixing hole 32, achieving a preliminary connection between the sealing member 3 and the inner ring. The third fixing hole 28 is similar in shape to the third fixing member 103 and can cooperate with the third fixing member 103 to achieve a fixed connection between the sealing member 3 and the inner ring 2. The third fixing member 103 is flush with or extends deep into the inner ring inlet to prevent protrusion.

[0063] By applying the above-described technical solution of this utility model, at least the following technical effects are achieved:

[0064] 1. This utility model uses a sealing component that is consistent with the inner ring flow channel line to cover the connection interface of the first sub-inner ring and the second sub-inner ring, which not only keeps the flow channel surface smooth but also reduces the energy loss of air flow.

[0065] 2. This utility model achieves the connection between the sealing component and the inner ring by embedding the sealing component into the inner ring groove located on the outer circumferential surface of the inner ring. This method facilitates installation and disassembly.

[0066] The above are merely several specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0068] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] It should be noted that in the description of this utility model, directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

Claims

1. A compressor comprising an outer ring (1) and an inner ring (2), the inner ring (2) being located inside the outer ring (1), the outer ring (1) surrounding the inner ring (2). The inner ring (2) includes a first sub-inner ring (21), a second sub-inner ring (22), and a plurality of connection interfaces (23). The connection interfaces (23) are located on the outer peripheral surface of the first sub-inner ring (21) and / or the second sub-inner ring (22). The first sub-inner ring (21) is connected to the second sub-inner ring (22) through the connection interfaces (23). The compressor further includes a sealing component (3), which is located on the outer circumferential surface of the first sub-inner ring (21) and / or the second sub-inner ring (22). The sealing component (3) is connected to the first sub-inner ring (21) and / or the second sub-inner ring (22) and covers the connection interface (23). After the sealing component (3) is connected to the first sub-inner ring (21) and / or the second sub-inner ring (22), the sealing component (3) forms a smooth connection with the outer peripheral surface of the first sub-inner ring (21) and / or the second sub-inner ring (22).

2. The compressor according to claim 1, characterized in that, In a cross section perpendicular to the compressor axial direction, the sealing component (3) forms a circle with the outer contour of the first sub-inner ring (21) and / or the second sub-inner ring (22).

3. The compressor according to claim 2, characterized in that, The sealing component (3) has a plate-like structure.

4. The compressor according to claim 3, characterized in that, Multiple connection interfaces (23) are distributed along the axial direction of the inner ring (2) on the outer peripheral surface of the first sub-inner ring (21) and / or the second sub-inner ring (22).

5. The compressor according to claim 4, characterized in that, The inner ring (2) further includes an inner ring groove (24), which is located on the outer circumferential surface of the first sub-inner ring (21) and / or the second sub-inner ring (22). A plurality of the connection interfaces (23) are located on the wall of the inner ring groove (24), and the sealing component (3) is embedded in the inner ring groove (24).

6. The compressor according to claim 5, characterized in that, The inner ring groove (24) extends along the axial direction of the inner ring (2); along the axial direction of the inner ring (2), one end of the inner ring groove (24) is connected to the air inlet end of the inner ring (2), and the other end of the inner ring groove (24) does not extend to the air outlet end of the inner ring (2).

7. The compressor according to claim 6, characterized in that, The inner ring (2) includes a fitting groove (25), and the sealing component (3) includes a flange (31). The sealing component (3) is embedded in the inner ring groove (24) through the cooperation of the flange (31) and the fitting groove (25).

8. The compressor according to claim 7, characterized in that, The fitting groove (25) is located on the inner wall surface of the inner ring groove (24), the flange (31) is located at the edge where the sealing member (3) fits into the inner ring groove (24), and the fitting groove (25) surrounds the flange (31).

9. The compressor according to claim 8, characterized in that, The inner ring (2) also includes a first fixing hole (26). A portion of the first fixing hole (26) is located on the end face of the air inlet end of the inner ring (2), and another portion of the first fixing hole (26) is located on the end face of the sealing member (3) near the air inlet end of the inner ring (2). The end face of the sealing member (3) near the air inlet end of the inner ring (2) is flush with the end face of the air inlet end of the inner ring (2). A first fixing member (101) is provided in the first fixing hole (26). The first fixing member (101) can restrict the relative movement between the sealing member (3) and the inner ring (2) along the axial direction of the inner ring (2).

10. The compressor according to claim 6, characterized in that, The compressor further includes a second fixing member (102) and a third fixing member (103), the inner ring (2) further includes a plurality of second fixing holes (27) and third fixing holes (28), and the sealing component (3) further includes a plurality of fourth fixing holes (32). Multiple second fixing holes (27) are located on the wall of the inner ring groove (24) and tend to be distributed along the axial direction of the inner ring (2). Multiple fourth fixing holes (32) are located on the contact surface between the sealing member (3) and the inner ring (2) and tend to be distributed along the axial direction of the inner ring (2). The second fixing holes (27) and the fourth fixing holes (32) both extend circumferentially along the inner ring (2). The second fixing member (102) is partially located in the second fixing hole (27) and partially located in the fourth fixing hole (32). The third fixing hole (28) is partially located in the inner ring (2) and partially located in the sealing component (3). One end of the third fixing hole (28) is flush with the end face of the air inlet end of the inner ring (2). The third fixing hole (28) extends along the axial direction of the inner ring (2). The third fixing member (103) is located inside the third fixing hole (28).

11. The compressor according to any one of claims 5-10, characterized in that, The connection surface between the first sub-inner ring (21) and the second sub-inner ring (22) is the mid-section of the compressor.

12. The compressor according to claim 11, characterized in that, The connection interface (23), the sealing component (3), and the inner ring groove (24) are all located on the outer circumferential surface of the first sub-inner ring (21).

13. The compressor according to claim 12, characterized in that, The first sub-inner ring (21) and the second sub-inner ring (22) are connected by an inner ring fixing bolt (104), and the connection interface (23) is a bolt hole corresponding to the inner ring fixing bolt (104).

14. The compressor according to claim 13, characterized in that, The sealing component (3) is provided with reinforcing ribs, which are located on the side of the sealing component (3) that contacts the inner ring (2).

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