Oil pipe assembly and engine assembly

Abstract

The utility model belongs to the technical field of engines, and particularly relates to an oil pipe assembly and an engine assembly. The oil pipe assembly comprises a pipe body, a locking nut and a pipe connector. The end part of the pipe body is sleeved with the locking nut head; the pipe joint comprises a transverse connecting part and a vertical connecting part, the transverse connecting part is provided with a transverse through hole, the vertical connecting part is provided with a vertical through hole, the transverse connecting part is connected with the vertical connecting part, the transverse through hole is communicated with the vertical through hole, the end part of the pipe body is inserted into the transverse through hole, the transverse connecting part is in threaded connection with the locking nut, and the vertical connecting part is used for connecting a pipeline. The oil pipe assembly provided by the technical scheme is simpler and more convenient in production process and relatively low in production cost. In addition, the oil pipe assembly is compact in structural design and can be suitable for the environment with limited space arrangement.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, specifically relating to an oil pipe assembly and an engine assembly. Background Technology

[0002] In current industrial applications, the oil inlet pipe assembly of turbochargers or air compressors is typically made of steel pipe, which is bent into the required shape and then connected to pipe fittings. However, during this bending process, due to unavoidable machining errors and assembly errors of the pipe fittings, the final oil pipe assembly often experiences assembly stress when assembled with other components. This assembly stress not only affects the accuracy and efficiency of the assembly but may also negatively impact the performance and lifespan of the equipment.

[0003] To address this issue, existing solutions typically involve adding a section of braided steel hose or rubber hose to the middle of the steel pipe. While braided steel hoses offer some flexibility and pressure resistance, their manufacturing process is relatively complex and costly. Furthermore, to ensure the performance and reliability of braided steel hoses, the straight section length usually needs to be at least 80 mm, which imposes strict limitations and challenges on the arrangement and design of the components. Rubber hoses, while cheaper and easier to install, have poor temperature resistance, making them suitable only for low-temperature liquid environments. They are unsuitable for high-temperature liquid environments and environments with high heat hazards, significantly limiting their application range.

[0004] In view of the above problems, there is an urgent need to propose an oil pipe assembly that can effectively avoid or reduce assembly stress, has a simple process, low cost, and wide applicability. Utility Model Content

[0005] The purpose of this invention is to at least solve the problems of simplifying the manufacturing process of tubing assemblies, increasing the applicability of tubing assemblies, and reducing the assembly stress of tubing assemblies. This purpose is achieved through the following technical solutions:

[0006] The first aspect of this utility model provides an oil pipe assembly, comprising:

[0007] tube body;

[0008] A locking nut, which is sleeved on the end of the tube body;

[0009] The pipe fitting includes a horizontal connecting part and a vertical connecting part. The horizontal connecting part has a horizontal through hole, and the vertical connecting part has a vertical through hole. The horizontal connecting part and the vertical connecting part are connected, and the horizontal through hole and the vertical through hole are in communication. The end of the pipe body is inserted into the horizontal through hole. The horizontal connecting part is threadedly connected to the locking nut. The vertical through hole is used to connect the pipeline.

[0010] By using the oil pipe assembly in this technical solution, other pipelines and vertical through holes can be connected, thereby allowing oil flow. During assembly, the lock nut is first placed on the pipe body, and then the pipe body is inserted into the transverse through hole of the pipe joint. At this time, the transverse connecting part can move axially or rotate around its axis, thereby eliminating assembly stress. After the pipe body and transverse connecting part are assembled in place, the lock nut and transverse connecting part are tightened to seal the connection between the pipe joint and the pipe body. Compared with existing oil pipe assemblies, the oil pipe assembly provided in this technical solution is simpler in manufacturing process and has a relatively lower production cost. Furthermore, the compact structural design of this oil pipe assembly makes it suitable for environments with limited space.

[0011] In addition, the oil pipe assembly of this utility model may also have the following additional technical features:

[0012] In some embodiments of this utility model, a sealing ring is fitted onto the tube body, the sealing ring is located between the tube body and the locking nut, the inner ring of the sealing ring is in sealing contact with the tube body, and the outer ring of the sealing ring is in sealing contact with the locking nut.

[0013] In some embodiments of this utility model, the locking nut includes a threaded portion and a sealing portion, the threaded portion and the sealing portion are connected, the inner side of the threaded portion is provided with an internal thread, the threaded portion is sleeved on the transverse connecting portion and threadedly connected to the transverse connecting portion, the sealing ring is located between the sealing portion and the pipe body, and the outer ring of the sealing ring is in sealing contact with the sealing portion.

[0014] In some embodiments of this invention, the inner diameter of the sealing portion gradually decreases from the direction close to the threaded portion to the direction far from the threaded portion.

[0015] In some embodiments of this utility model, the end of the sealing part away from the threaded part is connected to an extension part, and the inner ring of the extension part contacts the tube body.

[0016] In some embodiments of this utility model, the sealing ring is a rubber ring.

[0017] In some embodiments of this utility model, the pipe body is a steel pipe.

[0018] In some embodiments of this utility model, the pipe fitting is a steel fitting.

[0019] In some embodiments of this utility model, a chamfer is provided on the outer side of the end of the transverse connecting portion.

[0020] This utility model also proposes an engine assembly, which includes an engine body, pipelines, and the oil pipe assembly described in the above embodiments, wherein the vertical through hole is connected to the engine body through the pipelines. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of an oil pipe assembly according to an embodiment of the present invention is shown.

[0023] Figure 2 A partial structural cross-sectional view of an oil pipe assembly according to an embodiment of the present invention is shown schematically.

[0024] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 A schematic cross-sectional view of a locking nut according to an embodiment of the present invention is shown.

[0026] The labels in the attached diagram are as follows:

[0027] 100. Pipe body;

[0028] 200. Locking nut; 210. Threaded part; 220. Sealing part; 230. Extension part;

[0029] 300. Pipe fitting; 310. Horizontal connection part; 311. Horizontal through hole; 320. Vertical connection part; 321. Vertical through hole;

[0030] 400. Sealing ring. Detailed Implementation

[0031] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0032] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0033] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0034] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0035] Figure 1 A schematic diagram of the structure of an oil pipe assembly according to an embodiment of the present invention is shown. Figure 2 A partial structural diagram of an oil pipe assembly according to an embodiment of the present invention is shown schematically. Figure 1 and Figure 2As shown, this utility model proposes an oil pipe assembly, including a pipe body 100, a locking nut 200, and a pipe connector 300; the locking nut 200 is sleeved on the end of the pipe body 100; the pipe connector 300 includes a horizontal connecting part 310 and a vertical connecting part 320, the horizontal connecting part 310 has a horizontal through hole 311, the vertical connecting part 320 has a vertical through hole 321, the horizontal connecting part 310 and the vertical connecting part 320 are connected, the horizontal through hole 311 and the vertical through hole 321 are connected, the end of the pipe body 100 is inserted into the horizontal through hole 311, the horizontal connecting part 310 and the locking nut 200 are threadedly connected, and the vertical through hole 321 is used to connect pipelines.

[0036] By using the oil pipe assembly in this technical solution, other pipelines and the vertical through hole 321 can be connected, thereby allowing oil to flow. During assembly, the locking nut 200 is first fitted onto the pipe body 100, and then the pipe body 100 is inserted into the transverse through hole 311 of the pipe connector 300. At this time, the transverse connecting part 310 can move axially or rotate around its axis, thereby eliminating assembly stress. After the pipe body 100 and the transverse connecting part 310 are assembled in place, the locking nut 200 and the transverse connecting part 310 are locked to seal the connection between the pipe connector 300 and the pipe body 100. Compared with existing oil pipe assemblies, the oil pipe assembly provided by this technical solution is simpler in manufacturing process and has a relatively lower production cost. Furthermore, the compact structural design of this oil pipe assembly makes it suitable for environments with limited space.

[0037] Optionally, the pipe body 100 is a steel pipe. The pipe body 100 is made of steel material, thereby ensuring that the pipe body 100 has high strength and good plasticity.

[0038] In some embodiments, the pipe fitting 300 is a steel fitting. Preferably, the pipe fitting 300 can be formed from cold-rolled carbon steel sheet. The cold-rolled carbon steel sheet is rolled at room temperature, a process that does not produce iron oxide scale, thus ensuring excellent surface quality. Simultaneously, due to the combined effects of cold rolling and annealing, the dimensional accuracy of the cold-rolled carbon steel sheet is significantly improved. Furthermore, these treated cold-rolled carbon steel sheets exhibit excellent mechanical and technological properties, enabling them to be used in various operating environments such as high temperature and high pressure.

[0039] Furthermore, a sealing ring 400 is fitted onto the pipe body 100. The sealing ring 400 is located between the pipe body 100 and the locking nut 200. The inner ring of the sealing ring 400 is in sealing contact with the pipe body 100, and the outer ring of the sealing ring 400 is in sealing contact with the locking nut 200.

[0040] By providing a sealing ring 400 between the locking nut 200 and the pipe body 100, the sealing effect between the pipe joint 300 and the pipe body 100 can be significantly improved. This measure effectively prevents engine oil from leaking to the outside of the pipe body 100 along the transverse through-hole 311, thereby ensuring a more reliable and durable sealing performance of the overall structure. Optionally, the axial cross-section of the sealing ring 400 is circular, and after compression, it makes sealing contact with the transverse connecting part 310, the pipe body 100, and the locking nut 200, respectively.

[0041] Optionally, the sealing ring 400 is made of rubber.

[0042] For example, the material of the sealing ring 400 can include various types such as nitrile rubber, silicone rubber, fluororubber, and neoprene rubber. Each of these materials has its unique properties and characteristics, and can be selected according to specific application requirements. For instance, nitrile rubber, due to its excellent wear resistance and oil resistance, can be used in oil-related sealing applications; silicone rubber, with its excellent high-temperature resistance and chemical stability, is widely used in high-temperature and chemically corrosive environments; fluororubber, due to its excellent high-temperature resistance, oil resistance, and chemical media resistance, is widely used in extremely harsh industrial environments; and neoprene rubber, with its good heat resistance and aging resistance, is suitable for applications requiring long-term stability. By selecting rubber materials with excellent elasticity, wear resistance, and high-temperature resistance, the sealing ring 400 can withstand various harsh working environments with high temperatures and high pressures, ensuring the sealing performance and service life of the equipment.

[0043] Further, see Figure 2 and Figure 3 The locking nut 200 includes a threaded portion 210 and a sealing portion 220. The threaded portion 210 and the sealing portion 220 are connected. The inner side of the threaded portion 210 is provided with an internal thread. The threaded portion 210 is sleeved on the transverse connecting portion 310 and is threadedly connected to the transverse connecting portion 310. The sealing ring 400 is located between the sealing portion 220 and the tube body 100. The outer ring of the sealing ring 400 is in sealing contact with the sealing portion 220.

[0044] Understandably, the length of the threaded portion 210 needs to be set and adjusted according to actual usage requirements. Determining an appropriate length for the threaded portion 210 ensures a tight fit between it and the transverse connecting portion 310, achieving a stable connection and effectively preventing loosening of the connection due to vibration, temperature changes, or other external forces during long-term use. Furthermore, the sealing portion 220 ensures that the sealing ring 400 is tightly pressed against the outer circumference of the pipe body 100. This allows the sealing ring 400 to fully perform its leak-proof function, ensuring optimal sealing performance of the overall structure and guaranteeing the safe and stable operation of the equipment.

[0045] Furthermore, the inner diameter of the sealing portion 220 gradually decreases from the direction closest to the threaded portion 210 to the direction furthest from the threaded portion 210.

[0046] The sealing part 220, with this structural form, can fit tightly with the sealing ring 400 to form a highly efficient corner seal structure. In this structure, three different areas on the cross-section of the sealing ring 400 are simultaneously subjected to compression from the parts, and at least one compression surface is inclined relative to the axis of the sealing ring 400. This arrangement allows the engine oil to be completely isolated by these compression surfaces, thereby effectively preventing leakage.

[0047] Specifically, the inner side of the sealing ring 400 is tightly pressed against the outer wall of the pipe body 100, while the end face of the sealing ring 400 is tightly pressed against the transverse connecting portion 310. Furthermore, the outer side of the sealing ring 400 is also tightly pressed against the inner side of the sealing portion 220, ensuring that the sealing ring 400 is subjected to pressure in multiple directions. Additionally, the inner side of the sealing portion 220 is inclined relative to the axis of the sealing ring 400. This inclined structure allows the sealing ring 400 to better conform to each contact surface when compressed, thereby achieving a better sealing effect. Through this multi-point, multi-angle compression method, the sealing portion 220 can effectively isolate engine oil, ensuring optimal sealing performance.

[0048] Furthermore, the end of the sealing part 220 away from the threaded part 210 is connected to an extension part 230, and the inner ring of the extension part 230 contacts the tube body 100.

[0049] By providing an extension 230 at the end of the sealing portion 220 away from the threaded portion 210, the sealing ring 400 can be protected, preventing foreign objects from contacting the sealing ring 400. Optionally, the threaded portion 210, the sealing portion 220, and the extension 230 are integrally formed.

[0050] Furthermore, a chamfer is provided on the outer side of the end of the transverse connecting portion 310.

[0051] By providing a chamfer on the outer side of the end of the transverse connecting part 310, the locking nut 200 can be more easily fitted onto the transverse connecting part 310, preventing wear caused by contact between the end edges of the transverse connecting part 310 and the locking nut 200.

[0052] The assembly process of the tubing assembly provided in this technical solution is as follows:

[0053] Place the locking bolt on the pipe body 100, then place the sealing ring 400 on the pipe body 100. Next, insert the end of the pipe body 100 into the transverse connecting hole of the pipe joint 300, so that the transverse connecting part 310 moves along its axial direction and rotates around the central axis to adjust to a suitable position. The sealing ring 400 abuts against the end of the transverse connecting part 310. At the same time, lock the locking bolt and the transverse connecting part 310, so that the sealing ring 400 is compressed.

[0054] This technical solution also provides an engine assembly, which includes an engine body, pipelines and the oil pipe assembly described above, with a vertical through hole 321 connected to the engine body via the pipelines.

[0055] Because this engine assembly uses the aforementioned oil pipe assembly, assembly stress is less likely to occur during assembly, and a tight connection can be achieved. During assembly, the lock nut 200 is placed on the pipe body 100, and then the pipe body 100 is inserted into the transverse through hole 311 of the transverse connecting part 310. The lock nut 200 and the transverse connecting part 310 are then tightened. Finally, the pipe is connected to the vertical through hole 321 on the vertical connecting part 320. Since the transverse connecting part 310 can move axially and rotate about the axial direction relative to the connected portion of the pipe body 100 during assembly, assembly stress can be eliminated, avoiding impact on assembly accuracy and efficiency, and reducing damage to the performance and lifespan of the oil pipe assembly.

[0056] Furthermore, in some embodiments, a pipe connector 300 is connected to each end of the pipe body 100. The two pipe connectors 300 are respectively connected to pipelines. For example, one pipe connector 300 is connected to the main oil passage of the engine block, and the other pipe connector 300 is connected to the oil inlet of the turbocharger intermediate body.

[0057] Optionally, to increase structural stability, a bracket can be connected to the pipe body 100 to fix the pipe body 100 and other components, thereby reducing vibration of the oil pipe assembly during operation and preventing pipe body 100 from breaking after long-term use.

[0058] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A tubing assembly, characterized in that, include: tube body(100); A locking nut (200) is fitted onto the end of the tube body (100); A pipe connector (300) includes a horizontal connecting part (310) and a vertical connecting part (320). The horizontal connecting part (310) has a horizontal through hole (311), and the vertical connecting part (320) has a vertical through hole (321). The horizontal connecting part (310) and the vertical connecting part (320) are connected, and the horizontal through hole (311) and the vertical through hole (321) are in communication. The end of the pipe body (100) is inserted into the horizontal through hole (311). The horizontal connecting part (310) and the locking nut (200) are threaded together. The vertical through hole (321) is used to connect the pipeline.

2. The tubing assembly according to claim 1, characterized in that, A sealing ring (400) is fitted on the tube body (100). The sealing ring (400) is located between the tube body (100) and the locking nut (200). The inner ring of the sealing ring (400) is in sealing contact with the tube body (100), and the outer ring of the sealing ring (400) is in sealing contact with the locking nut (200).

3. The tubing assembly according to claim 2, characterized in that, The locking nut (200) includes a threaded portion (210) and a sealing portion (220). The threaded portion (210) and the sealing portion (220) are connected. The inner side of the threaded portion (210) is provided with an internal thread. The threaded portion (210) is sleeved on the transverse connecting portion (310) and threadedly connected to the transverse connecting portion (310). The sealing ring (400) is located between the sealing portion (220) and the tube body (100). The outer ring of the sealing ring (400) is in sealing contact with the sealing portion (220).

4. The tubing assembly according to claim 3, characterized in that, The inner diameter of the sealing portion (220) gradually decreases from the direction closest to the threaded portion (210) to the direction furthest from the threaded portion (210).

5. The tubing assembly according to claim 4, characterized in that, The sealing part (220) is connected to an extension part (230) at one end away from the threaded part (210), and the inner ring of the extension part (230) is in contact with the tube body (100).

6. The tubing assembly according to any one of claims 2-5, characterized in that, The sealing ring (400) is a rubber ring.

7. The tubing assembly according to any one of claims 1-5, characterized in that, The pipe body (100) is a steel pipe.

8. The tubing assembly according to any one of claims 1-5, characterized in that, The pipe fitting (300) is a steel fitting.

9. The tubing assembly according to any one of claims 1-5, characterized in that, The outer side of the end of the transverse connecting part (310) is provided with a chamfer.

10. An engine assembly, characterized in that, Includes an engine body, piping, and an oil pipe assembly as described in any one of claims 1-9, wherein the vertical through-hole (321) is connected to the engine body via the piping.

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