Step sealing structure of split type compressor piston ring

Abstract

The utility model relates to the technical field of compressor piston ring sealing, and discloses a stepped sealing structure of a split type compressor piston ring, which solves the problem that a better sealing effect cannot be achieved in the use process of the compressor piston ring, and comprises a top ring, the inner wall of the main sealing ring is of an inclined face structure, a conical bottom ring is fixedly installed at the bottom of the main sealing ring, an inner ring is arranged in the main sealing ring, the top of the inner ring is fixedly connected with the inner wall of the top ring, the bottom of the inner ring is fixedly connected with the inner wall of the conical bottom ring, and three stepped annular grooves are evenly formed in the outer side of the bottom end of the main sealing ring. Sealing rings are fixedly installed in the three stepped annular grooves, and an elastic extrusion assembly is arranged between the main sealing ring and the inner ring. According to the utility model, in the use process of the compressor piston ring, the stepped sealing effect can be achieved, the sealing performance is improved, and the normal work of a machine body is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of compressor piston ring sealing technology, specifically a stepped sealing structure for piston rings of a split compressor. Background Technology

[0002] Compressor piston rings are key metal elastic seals installed on the piston in reciprocating compressors. They are mainly used to seal the gap between the cylinder and the piston, ensuring the efficiency of the gas compression process, preventing compressed gas from leaking from the high-pressure side to the low-pressure side, and maintaining compression efficiency. The sealing structure is an important component of the compressor piston rings, which determines the sealing effect of the piston rings. If the compressor piston rings cannot achieve a better sealing effect during use, it will affect the normal operation of the machine and thus hinder its practicality. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a stepped sealing structure for the piston ring of a split compressor, which effectively solves the problem that the piston ring of the compressor cannot achieve a better sealing effect during use, which affects the normal operation of the machine and makes it difficult to achieve better practicality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stepped sealing structure for a split compressor piston ring, comprising a top ring, a main sealing ring fixedly installed at the bottom of the top ring, the inner wall of the main sealing ring being an inclined surface structure, a conical bottom ring fixedly installed at the bottom of the main sealing ring, an inner ring provided inside the main sealing ring, the top of the inner ring being fixedly connected to the inner wall of the top ring, the bottom of the inner ring being fixedly connected to the inner wall of the conical bottom ring, three stepped annular grooves evenly opened on the outer side of the bottom end of the main sealing ring, sealing rings fixedly installed inside each of the three stepped annular grooves, an elastic compression component provided between the main sealing ring and the inner ring, and the elastic compression component being fixedly installed between the top ring and the conical bottom ring.

[0005] Preferably, the elastic compression assembly includes a movable compression ring, which is movably installed on the outside of the inner ring. The outer wall of the movable compression ring is in movable contact with the inner wall of the main sealing ring. The bottom end of the movable compression ring has a tapered structure, and the angle of the tapered surface is adapted to the inclination angle of the inner wall of the main sealing ring. Four movable rods are evenly fixedly installed on the top of the movable compression ring, and the tops of the four movable rods all movably penetrate and extend to the top of the top ring.

[0006] Preferably, four connecting seats are evenly fixedly installed on the top of the inner wall of the movable compression ring. A movable sleeve is fixedly installed on one side of the connecting seat. A positioning vertical rod is slidably installed inside the movable sleeve. The top of the positioning vertical rod is fixedly connected to the bottom of the top ring, and the bottom of the positioning vertical rod is fixedly connected to the top of the conical bottom ring. A sliding ring is fixedly installed at the bottom of the movable sleeve and is movably installed on the outside of the positioning vertical rod. A compression spring is fixedly installed at the bottom of the sliding ring and is movably installed on the outside of the positioning vertical rod. A support ring is fixedly installed at the bottom of the compression spring and is fixedly installed on the outside of the positioning vertical rod.

[0007] Preferably, positioning slide bars are symmetrically fixedly installed on the inner wall of the movable sleeve, and positioning grooves are symmetrically opened on the outer side of the positioning vertical rod, with the positioning slide bars slidably installed inside the positioning grooves.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1) During operation, through the interaction of the top ring, main sealing ring, conical bottom ring, inner ring, stepped annular groove, sealing ring and elastic extrusion assembly, the compressor piston ring can achieve a stepped sealing effect during use, which improves its sealing performance, ensures the normal operation of the machine body, and thus facilitates better practicality.

[0010] 2) During operation, the interaction between the positioning slide bar and the positioning slide groove enables the movable sleeve to achieve better stability when moving, thereby ensuring that the elastic extrusion component can work stably. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a schematic diagram of the stepped sealing structure of the piston ring of a split compressor according to the present invention.

[0014] Figure 2 This is a schematic diagram of the internal structure of the main sealing ring of this utility model;

[0015] Figure 3 This is a schematic diagram of the elastic extrusion component structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the disassembled structure of the movable sleeve and the positioning vertical rod of this utility model.

[0017] In the diagram: 1. Top ring; 2. Main sealing ring; 3. Conical bottom ring; 4. Inner ring; 5. Stepped annular groove; 6. Sealing ring; 7. Elastic extrusion assembly; 8. Movable extrusion ring; 9. Movable rod; 10. Connecting seat; 11. Movable sleeve; 12. Positioning vertical rod; 13. Sliding ring; 14. Compression spring; 15. Support ring; 16. Positioning slide bar; 17. Positioning groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Example 1, by Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model relates to a stepped sealing structure for piston rings of a split compressor, including a top ring 1, a main sealing ring 2 fixedly installed at the bottom of the top ring 1, and the inner wall of the main sealing ring 2 having an inclined surface structure. A conical bottom ring 3 is fixedly installed at the bottom of the main sealing ring 2. An inner ring 4 is provided inside the main sealing ring 2, and the top of the inner ring 4 is fixedly connected to the inner wall of the top ring 1, and the bottom of the inner ring 4 is fixedly connected to the inner wall of the conical bottom ring 3. Three stepped annular grooves 5 are evenly opened on the outer side of the bottom end of the main sealing ring 2, and sealing rings 6 are fixedly installed inside each of the three stepped annular grooves 5. An elastic compression component 7 is provided between the main sealing ring 2 and the inner ring 4, and the elastic compression component 7 is fixedly installed between the top ring 1 and the conical bottom ring 3.

[0020] During use, the interaction of the top ring 1, main sealing ring 2, conical bottom ring 3, inner ring 4, stepped annular groove 5, sealing ring 6, and elastic compression assembly 7 enables the compressor piston ring to achieve a stepped sealing effect, improving its sealing performance, ensuring the normal operation of the machine, and thus facilitating better practicality.

[0021] The elastic compression assembly 7 includes a movable compression ring 8, which is movably installed on the outside of the inner ring 4. The outer wall of the movable compression ring 8 is in movable contact with the inner wall of the main sealing ring 2. The bottom end of the movable compression ring 8 has a tapered structure, and the angle of the tapered surface is adapted to the inclination angle of the inner wall of the main sealing ring 2. Four movable rods 9 are evenly fixedly installed on the top of the movable compression ring 8, and the tops of the four movable rods 9 all movably penetrate and extend to the top of the top ring 1. Four connecting seats 10 are evenly fixedly installed on the top of the inner wall of the movable compression ring 8, and a movable sleeve 1 is fixedly installed on one side of the connecting seat 10. 1. A positioning vertical rod 12 is slidably installed inside the movable sleeve 11, and the top of the positioning vertical rod 12 is fixedly connected to the bottom of the top ring 1. The bottom of the positioning vertical rod 12 is fixedly connected to the top of the conical bottom ring 3. A sliding ring 13 is fixedly installed at the bottom of the movable sleeve 11, and the sliding ring 13 is movably installed on the outside of the positioning vertical rod 12. A compression spring 14 is fixedly installed at the bottom of the sliding ring 13, and the compression spring 14 is movably installed on the outside of the positioning vertical rod 12. A support ring 15 is fixedly installed at the bottom of the compression spring 14, and the support ring 15 is fixedly installed on the outside of the positioning vertical rod 12.

[0022] The movable sleeve 11 is symmetrically fixedly installed with positioning slide bars 16 on its inner wall, and the positioning vertical rod 12 is symmetrically provided with positioning grooves 17 on its outer side. The positioning slide bars 16 are slidably installed inside the positioning grooves 17. During use, the interaction between the positioning slide bars 16 and the positioning grooves 17 makes it easier for the movable sleeve 11 to achieve better stability when moving, thereby ensuring that the elastic extrusion assembly 7 can work stably.

[0023] Working principle: During operation, the movable rod 9 moves under high pressure, which in turn pushes the movable compression ring 8 to move. The movable compression ring 8 drives the movable sleeve 11 to slide outside the positioning vertical rod 12 via the connecting seat 10. The movable ring drives the positioning slide bar 16 to slide inside the positioning groove 17, ensuring better stability of the movable sleeve 11 during movement. At the same time, the movable sleeve 11 drives the sliding ring 13 to slide outside the positioning vertical rod 12. The movement of the sliding ring 13 compresses the compression spring 14, causing the compression spring 14 to undergo elastic deformation. Simultaneously, the conical structure at the bottom of the movable compression ring 8 compresses the inclined inner wall of the main sealing ring 2, causing the main sealing ring 2 to expand under compression. The sealing rings 6 inside the three stepped annular grooves 5 on the outer side of the main sealing ring 2 expand accordingly. The three sealing rings 6 expand and come into close contact with the inner wall of the cylinder, achieving a stepped sealing effect. This allows the compressor piston ring to achieve a stepped sealing effect during use, improving its sealing performance and ensuring the normal operation of the machine, thus facilitating better practicality.

Claims

1. A stepped sealing structure for piston rings of a split-type compressor, comprising a top ring (1), characterized in that: The top ring (1) is fixedly installed with a main sealing ring (2) at its bottom, and the inner wall of the main sealing ring (2) is an inclined surface structure. The bottom of the main sealing ring (2) is fixedly installed with a conical bottom ring (3). The main sealing ring (2) is provided with an inner ring (4) inside, and the top of the inner ring (4) is fixedly connected to the inner wall of the top ring (1). The bottom of the inner ring (4) is fixedly connected to the inner wall of the conical bottom ring (3). Three stepped annular grooves (5) are evenly opened on the outer side of the bottom end of the main sealing ring (2). A sealing ring (6) is fixedly installed inside each of the three stepped annular grooves (5). An elastic extrusion assembly (7) is provided between the main sealing ring (2) and the inner ring (4), and the elastic extrusion assembly (7) is fixedly installed between the top ring (1) and the conical bottom ring (3).

2. The stepped sealing structure of the piston ring of a split compressor according to claim 1, characterized in that: The elastic compression assembly (7) includes a movable compression ring (8), which is movably installed on the outside of the inner ring (4). The outer wall of the movable compression ring (8) is in contact with the inner wall of the main sealing ring (2). The bottom end of the movable compression ring (8) is a conical structure, and the angle of the conical surface is adapted to the inclination angle of the inner wall of the main sealing ring (2). Four movable rods (9) are evenly fixedly installed on the top of the movable compression ring (8), and the tops of the four movable rods (9) all move through and extend to the top of the top ring (1).

3. The stepped sealing structure of a split-type compressor piston ring according to claim 2, characterized in that: Four connecting seats (10) are evenly fixedly installed on the top of the inner wall of the movable compression ring (8). A movable sleeve (11) is fixedly installed on one side of the connecting seat (10). A positioning vertical rod (12) is slidably installed inside the movable sleeve (11). The top of the positioning vertical rod (12) is fixedly connected to the bottom of the top ring (1). The bottom of the positioning vertical rod (12) is fixedly connected to the top of the conical bottom ring (3). A sliding ring (13) is fixedly installed at the bottom of the movable sleeve (11). The sliding ring (13) is movably installed on the outside of the positioning vertical rod (12). A compression spring (14) is fixedly installed at the bottom of the sliding ring (13). The compression spring (14) is movably installed on the outside of the positioning vertical rod (12). A support ring (15) is fixedly installed at the bottom of the compression spring (14). The support ring (15) is fixedly installed on the outside of the positioning vertical rod (12).

4. The stepped sealing structure of the piston ring of a split compressor according to claim 3, characterized in that: The inner wall of the movable sleeve (11) is symmetrically fixed with positioning slides (16), and the outer side of the positioning vertical rod (12) is symmetrically provided with positioning grooves (17), and the positioning slides (16) are slidably installed inside the positioning grooves (17).

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