Turbocharger sealing structure

Abstract

The utility model discloses a turbocharger sealing structure, and particularly relates to the technical field of turbochargers, the turbocharger sealing structure comprises a turbocharger body, one side of the turbocharger body is fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with a connector, the outer part of the connector is provided with an annular groove, and one end of an inner cavity of the connector is provided with a sealing groove. The first sealing ring is inserted into the sealing groove, the sealing strength of the connecting position is improved through the first sealing ring on the outer surface of the first sealing ring, the first sealing ring is extruded through the first limiting ring and the connector, secondary sealing is achieved, engine oil and gas are effectively prevented from leaking from the connecting position, and the service life of the engine is prolonged. The threaded sleeve is in threaded connection with the connector, and the fastening bolt is rotated to extrude the inclined surface of the inner cavity of the annular groove, so that the threaded sleeve is fixed, the anti-loosening effect of the threaded sleeve can be improved in a long-term vibration environment, and the fixing strength and the sealing strength of the threaded sleeve are improved.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, and more specifically, to a turbocharger sealing structure. Background Technology

[0002] As a key component for improving engine power performance, the turbocharger uses the exhaust gas from the engine to drive the turbine to rotate, which in turn drives the compressor on the intake side to compress air, increasing the engine's intake volume and improving fuel combustion efficiency. During the operation of the turbocharger, the sealing structure is the core component to ensure its normal operation. It needs to effectively isolate the oil chamber from the air chamber and the exhaust gas chamber to prevent oil leakage into the intake or exhaust system, while also preventing air and exhaust gas from flowing into each other and affecting engine performance.

[0003] Traditional turbocharger connecting pipes and connectors often use simple threaded or flanged connections, and the sealing performance relies on rubber sealing rings or gaskets. During engine operation, threaded connections are prone to loosening due to vibration, which causes the compressive force on the sealing ring to decrease due to changes in operating conditions, resulting in a gradual increase in the sealing gap. This affects the compressive strength of the gasket, leading to oil or gas leakage. Therefore, a turbocharger sealing structure is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a turbocharger sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turbocharger sealing structure, including a turbocharger body, a connecting pipe fixedly connected to one side of the turbocharger body, a connector fixedly connected to one end of the connecting pipe, an annular groove being formed on the outside of the connector, and a sealing groove being formed at one end of the inner cavity of the connector.

[0006] An external tube is provided at one end of the connecting pipe near the connector. One end of the external tube is fixedly connected to a first limiting ring and a first sealing ring. The first sealing ring is inserted into the sealing groove to effectively prevent oil or gas from leaking from the connection. A threaded sleeve is fitted at the end of the external tube near the first limiting ring. A second limiting ring is fixedly connected to one end of the inner cavity of the threaded sleeve. Fastening bolts are inserted around the threaded sleeve. A first sealing ring is provided on one side of the first limiting ring. The first sealing ring can further enhance the sealing effect. The two first sealing rings can form a double sealing barrier. The threaded sleeve is fitted onto the connector to facilitate the connection between the external tube and the connecting pipe, thereby causing the second limiting ring to squeeze the first limiting ring, and the first limiting ring and the connector to squeeze the first sealing ring, achieving a compression seal. By rotating the fastening bolts inserted into the annular groove, the inclined surface of one side of the annular groove is squeezed, which can improve the fixing effect of the threaded sleeve, prevent the threaded sleeve from loosening due to the vibration of the turbocharger body, improve the connection strength, prevent oil leakage, and improve the sealing effect.

[0007] A rotating shaft is located in the middle of the turbocharger body. A second sealing ring is fitted onto the protruding end of the rotating shaft. A sealing insert ring is fixedly connected to one end of the second sealing ring, and the sealing insert ring is embedded in the sealing slot, forming the first line of defense for sealing the rotating shaft. This effectively prevents oil leakage from the connection between the rotating shaft and the turbocharger body. A wear-resistant ring and a second sealing ring are embedded in the middle of the second sealing ring. A sealing slot is provided on one side of the turbocharger body at a position corresponding to the sealing insert ring. The wear-resistant ring is made of a highly wear-resistant material, which can effectively reduce friction between the rotating shaft and the second sealing ring during rotation, reduce wear, and extend the service life of the sealing ring. The second sealing rings on both sides further enhance the sealing performance of the rotating shaft, maintaining a good sealing effect even under harsh conditions such as high-speed rotation and high temperature of the rotating shaft, preventing oil leakage.

[0008] Preferably, the outer surface of the connector is provided with threads, the inner wall of the threaded sleeve is provided with threads, one end of the threaded sleeve is fitted onto the outside of the connector and threadedly connected to the inner cavity of the connector, and the external tube is conveniently connected to the connecting tube by the cooperation of the threaded sleeve and the connector.

[0009] Preferably, the second limiting ring is disposed on the side of the first limiting ring away from the first sealing ring. The first sealing ring corresponds to the sealing groove and is disposed inside the sealing groove. When the threaded sleeve is threadedly connected to the connector through the second limiting ring, the first limiting ring can drive the external tube to exert a squeezing force on the connector, which facilitates connection and fixation and improves sealing strength.

[0010] Preferably, the number of the first sealing rings is set to two, and the two first sealing rings are respectively embedded on one side of the first limiting ring and the outer surface of the first sealing ring. The sealing strength can be improved by the first sealing rings.

[0011] Preferably, the inner wall of the annular groove near the first limiting ring is set as an inclined surface, and one end of the fastening bolt is set as a semi-circular structure. One end of the fastening bolt extends into the interior of the annular groove and fits against the inclined wall of the inner cavity of the annular groove. By inserting one end of the fastening bolt into the interior of the annular groove, the position of the threaded sleeve can be limited, preventing the threaded sleeve from loosening after long-term use and improving the sealing connection strength.

[0012] Preferably, the sealing ring is embedded inside the sealing slot, and the number of the second sealing ring is set to two, which are respectively set on both sides of the wear-resistant ring. Through the cooperation of the sealing ring and the sealing slot, the oil leakage from the connection between the shaft and the turbocharger body can be effectively prevented.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model first inserts a first sealing ring into the interior of the sealing groove and improves the sealing strength of the connection by passing a first sealing ring on the outer surface of the first sealing ring. Then, the first sealing ring is squeezed by the first limiting ring and the connector to achieve secondary sealing, which effectively prevents oil and gas from leaking from the connection. The threaded sleeve is threadedly connected to the connector, and the screw is rotated to squeeze the inclined surface of the annular groove to fix the threaded sleeve. This can improve the anti-loosening effect of the threaded sleeve under long-term vibration environment, thereby improving the fixing strength of the threaded sleeve and the sealing strength.

[0015] 2. This utility model also effectively reduces friction between the shaft and the second sealing ring during rotation by using a wear-resistant ring, thereby reducing wear and extending the service life of the sealing ring. Furthermore, the second sealing ring further enhances the sealing performance of the shaft, maintaining a good sealing effect even under harsh conditions such as high-speed rotation and high temperatures, preventing oil leakage.

[0016] In summary, through the interaction of the above-mentioned multiple functions, multiple seals can be achieved at the connection, effectively preventing oil and gas from leaking from the connection. It can also limit and fix the threaded sleeve of the connection, improve the fixing stability of the threaded sleeve, prevent the threaded sleeve from loosening under long-term vibration, improve the fixing effect, and thus improve the sealing strength. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2This is a schematic diagram of the cross-sectional structure of the connecting pipe and the external pipe of this utility model.

[0019] Figure 3 This is a schematic diagram of the split cross-sectional structure of the connecting pipe and the external pipe of this utility model.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the second sealing ring of this utility model.

[0021] The attached figures are labeled as follows: 1. Turbocharger body; 2. Connecting pipe; 3. Connector; 4. Annular groove; 5. Sealing groove; 6. External pipe; 7. First limiting ring; 8. First sealing ring; 9. First sealing ring; 10. Threaded sleeve; 11. Second limiting ring; 12. Fastening bolt; 13. Rotating shaft; 14. Sealing slot; 15. Second sealing ring; 16. Sealing insert ring; 17. Wear-resistant ring; 18. Second sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1-3 The turbocharger sealing structure shown includes a turbocharger body 1, a connecting pipe 2 fixedly connected to one side of the turbocharger body 1, a connector 3 fixedly connected to one end of the connecting pipe 2, an annular groove 4 on the outside of the connector 3, and a sealing groove 5 on one end of the inner cavity of the connector 3.

[0024] An external tube 6 is provided at one end of the connecting pipe 2 near the connector 3. A first limiting ring 7 and a first sealing ring 8 are fixedly connected to one end of the external tube 6. The first sealing ring 8 is inserted into the sealing groove 5 to effectively prevent oil or gas leakage from the connection point. A threaded sleeve 10 is fitted onto one end of the external tube 6 near the first limiting ring 7. A second limiting ring 11 is fixedly connected to one end of the inner cavity of the threaded sleeve 10. Fastening bolts 12 are inserted around the threaded sleeve 10. A first sealing ring 9 is provided on one side of the first limiting ring 7. The first sealing ring 9 further enhances the sealing effect. The first sealing ring 9 can form a double sealing barrier. The threaded sleeve 10 is threaded onto the connector 3, which facilitates the connection between the external tube 6 and the connector 2. This causes the second limiting ring 11 to squeeze the first limiting ring 7, and the first limiting ring 7 and the connector 3 to squeeze the first sealing ring 9, thus achieving a compression seal. By rotating the fastening bolt 12 and inserting it into the annular groove 4, the threaded sleeve 10 is squeezed on one side of the annular groove 4. This can improve the fixing effect of the threaded sleeve 10, prevent the threaded sleeve 10 from loosening due to the vibration of the turbocharger body 1, improve the connection strength, prevent oil leakage, and improve the sealing effect.

[0025] A rotating shaft 13 is located in the middle of the turbocharger body 1. A second sealing ring 15 is fitted onto the protruding end of the rotating shaft 13. A sealing insert ring 16 is fixedly connected to one end of the second sealing ring 15. The sealing insert ring 16 is embedded inside the sealing slot 14, forming the first line of defense for sealing the rotating shaft and effectively preventing oil leakage from the connection between the rotating shaft and the turbocharger body 1. A wear-resistant ring 17 and a second sealing ring 18 are embedded in the middle of the second sealing ring 15. A sealing slot 14 is provided on one side of the turbocharger body 1 at a position corresponding to the sealing insert ring 16. The wear-resistant ring 17 is made of a highly wear-resistant material, which can effectively reduce the friction between the rotating shaft and the second sealing ring 15 during rotation, reduce wear, and extend the service life of the sealing ring. The second sealing rings 18 on both sides further enhance the sealing performance of the rotating shaft, maintaining a good sealing effect even under harsh conditions such as high-speed rotation and high temperature of the rotating shaft, preventing oil leakage.

[0026] As attached Figure 1-4As shown, the outer surface of the connector 3 is threaded, and the inner wall of the threaded sleeve 10 is threaded. One end of the threaded sleeve 10 is fitted onto the outside of the connector 3 and threadedly connected to the inner cavity of the connector 3. The second limiting ring 11 is located on the side of the first limiting ring 7 away from the first sealing ring 8. The first sealing ring 8 corresponds to the sealing groove 5 and is located inside the sealing groove 5. The number of first sealing rings 9 is set to two, and the two first sealing rings 9 are respectively embedded on one side of the first limiting ring 7 and the outer surface of the first sealing ring 8. The inner wall of the annular groove 4 near the first limiting ring 7 is set as a slope. One end of the fastening bolt 12 is set as a semi-circular structure. One end of the fastening bolt 12 extends into the interior of the annular groove 4 and fits against the sloped wall of the inner cavity of the annular groove 4. The sealing insert ring 16 is embedded in the sealing... Inside the slot 14, two second sealing rings 18 are respectively set on both sides of the wear-resistant ring 17. Through the cooperation of the threaded sleeve 10 and the connector 3, it is convenient to connect the external tube 6 to the connector 2. When the threaded sleeve 10 and the connector 3 are threadedly connected by the second limiting ring 11, the first limiting ring 7 can drive the external tube 6 to exert a squeezing force on the connector 3, which facilitates connection and fixation and improves sealing strength. The first sealing ring 9 can improve sealing strength. By inserting one end of the fastening bolt 12 into the annular groove 4, the position of the threaded sleeve 10 can be limited to prevent the threaded sleeve 10 from loosening after long-term use and improve the sealing connection strength. Through the cooperation of the sealing ring 16 and the sealing slot 14, the oil leakage from the connection between the shaft 13 and the turbocharger body 1 can be effectively prevented.

[0027] The working principle of this utility model is as follows: When in use, the two first sealing rings 9 are respectively embedded into the mounting grooves on one side of the first limiting ring 7 and the outer surface of the first sealing ring 8. Then, the first sealing ring 8 is inserted into the interior of the sealing groove 5 so that the first limiting ring 7 fits against the connector 3. Then, the threaded sleeve 10 is rotated to fit the threaded sleeve 10 onto the connector 3 and threadedly connected to the connector 3 until the first limiting ring 7 exerts a squeezing force on the connector 3, and a strong seal is formed through the first sealing ring 9.

[0028] Then rotate the fastening bolt 12 so that one end of the fastening bolt 12 presses against the inclined surface of the inner cavity of the annular groove 4, which can fix the position of the threaded sleeve 10 and improve the connection sealing strength between the external tube 6 and the connecting tube 2.

[0029] The wear-resistant ring 17 and the second sealing ring 18 work together to seal the gap between the thirteenth ring and the turbocharger body 1, thereby improving the sealing strength and preventing oil leakage.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turbocharger sealing structure, comprising a turbocharger body (1), characterized in that: A connecting pipe (2) is fixedly connected to one side of the turbocharger body (1), and a connector (3) is fixedly connected to one end of the connecting pipe (2). An annular groove (4) is provided on the outside of the connector (3), and a sealing groove (5) is provided on one end of the inner cavity of the connector (3). The connecting tube (2) is provided with an external tube (6) at one end near the connector (3). A first limiting ring (7) and a first sealing ring (8) are fixedly connected to one end of the external tube (6). A threaded sleeve (10) is fitted on one end of the external tube (6) near the first limiting ring (7). A second limiting ring (11) is fixedly connected to one end of the inner cavity of the threaded sleeve (10). Fastening bolts (12) are inserted around the threaded sleeve (10). A first sealing ring (9) is provided on one side of the first limiting ring (7). The turbocharger body (1) has a rotating shaft (13) in the middle. The extended end of the rotating shaft (13) is fitted with a second sealing ring (15). One end of the second sealing ring (15) is fixedly connected to a sealing insert ring (16). The middle part of the second sealing ring (15) is fitted with a wear-resistant ring (17) and a second sealing ring (18). A sealing slot (14) is opened on one side of the turbocharger body (1) at a position corresponding to the sealing insert ring (16).

2. The turbocharger sealing structure according to claim 1, characterized in that: The outer surface of the connector (3) is provided with threads, and the inner wall of the threaded sleeve (10) is provided with threads. One end of the threaded sleeve (10) is fitted onto the outside of the connector (3) and is threadedly connected to the inner cavity of the connector (3).

3. The turbocharger sealing structure according to claim 1, characterized in that: The second limiting ring (11) is located on the side of the first limiting ring (7) away from the first sealing ring (8). The first sealing ring (8) corresponds to the sealing groove (5) and is located inside the sealing groove (5).

4. The turbocharger sealing structure according to claim 1, characterized in that: The number of the first sealing rings (9) is set to two, and the two first sealing rings (9) are respectively embedded on one side of the first limiting ring (7) and the outer surface of the first sealing ring (8).

5. A turbocharger sealing structure according to claim 1, characterized in that: The inner wall of the annular groove (4) near the first limiting ring (7) is set as an inclined surface. One end of the fastening bolt (12) is set as a semi-circular structure. One end of the fastening bolt (12) extends into the interior of the annular groove (4) and fits against the inclined wall of the inner cavity of the annular groove (4).

6. A turbocharger sealing structure according to claim 1, characterized in that: The sealing ring (16) is embedded inside the sealing slot (14), and the number of the second sealing ring (18) is set to two, which are respectively set on both sides of the wear-resistant ring (17).

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