Engine oil sealing structure of high-pressure oil pipe
By installing O-rings on the high-pressure oil pipe and injector interfaces, a multi-stage sealing structure is formed, which solves the problem of diesel mixing into the engine oil caused by the single-layer failure of the traditional high-pressure oil pipe sealing structure, and realizes multiple seals of engine oil and diesel, ensuring the normal operation of the engine.
Patent Information
- Application Number
- CN202510218175.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional high-pressure oil pipe sealing structure is a single-layer seal. Once it fails, it will cause diesel to mix into the engine oil, the engine oil will be diluted, the viscosity will be reduced, and the lubrication will be insufficient, which may lead to engine damage.
A multi-stage sealing structure is adopted, including the sealing grooves respectively on the rear and front sides of the coupling nuts, and an O-ring is installed on the high-pressure oil pipe and injector interface to ensure multiple seals of engine oil and diesel.
The high-pressure oil pipe is thoroughly sealed to prevent oil leakage and diesel from mixing into the engine oil, avoid the problems of oil dilution and poor lubrication, and reduce the risk of engine damage.
Smart Images
Figure CN119878935A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of high-pressure oil pipe sealing, and more specifically, to a high-pressure oil pipe oil sealing structure. Background Art
[0002] As the engine design becomes more and more compact, the high-pressure oil pipe partly sinks into the engine oil. Since the engine has a pressure of 0.2MPA during operation, under this pressure, the engine oil will flow out from the thread gap of the high-pressure oil pipe, causing the high-pressure oil pipe to fail, and then cause claims. In addition, the traditional high-pressure oil pipe sealing structure is a single-layer seal. Once the high-pressure oil pipe seal fails, diesel will be mixed into the engine oil, the engine oil will be diluted, the viscosity will be reduced, the engine oil pressure will drop, the lubrication will be insufficient, and the lubrication effect will be destroyed. In mild cases, the cylinder and the bearing will be pulled; in severe cases, the bearing will be stuck. Summary of the invention
[0003] In order to solve the above technical problems, the present invention provides a high-pressure oil pipe oil sealing structure to solve the problem that the traditional high-pressure oil pipe sealing structure is a single-layer seal. Once the high-pressure oil pipe seal fails, diesel will be mixed into the engine oil, the engine oil will be diluted, the viscosity will be reduced, the engine oil pressure will drop, the lubrication will be insufficient, and the lubrication effect will be destroyed. In mild cases, the cylinder and the bearing will be pulled; in severe cases, the bearing will stick.
[0004] The present invention provides a high-pressure oil pipe oil sealing structure, comprising: a high-pressure oil pipe, a connecting nut, a bushing, an injector interface and an O-type sealing ring;
[0005] The inner end of the high-pressure oil pipe is a frustum structure and is inserted into the rear end of the coupling nut, and a bushing is sleeved on one side of the frustum structure. The inner end of the injector interface is inserted into the front end of the coupling nut and contacts the inner wall of the coupling nut. The inner end of the injector interface is provided with a conical opening, and the conical opening contacts and engages with the frustum structure of the high-pressure oil pipe.
[0006] The rear end of the connecting nut extends outward to form a cavity, and a sealing groove 1 is provided in the inner wall cavity of the connecting nut that contacts the diameter of the high-pressure oil pipe, and an O-type sealing ring is installed in the sealing groove 1.
[0007] Furthermore, the O-ring in the sealing groove 1 is also sleeved on the high-pressure oil pipe.
[0008] Furthermore, a sealing ring cavity is extended from the front side end of the connecting nut, and a sealing groove 2 is provided in the sealing ring cavity, and an O-ring is also installed in the sealing groove 2.
[0009] Furthermore, the O-ring in the second sealing groove is also sleeved on the injector interface.
[0010] The present invention has at least the following beneficial effects:
[0011] 1. The present invention processes a sealing groove 1 on the rear end side of the connecting nut, installs an O-ring, and sleeves it on the high-pressure oil pipe, so as to completely seal the engine oil and prevent claims caused by engine oil leakage.
[0012] 2. The present invention processes a sealing groove 2 at the front end of the connecting nut, installs an O-ring, and sets it on the injector interface. It can not only seal the diesel, but also seal the oil leakage, and can achieve multi-level sealing. Even if the high-pressure oil pipe end structure fails, it will not cause diesel oil to mix in and cause a major accident. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the traditional high-pressure oil pipe sealing structure.
[0014] Figure 2 It is a structural diagram of embodiment 1 of the present invention.
[0015] Figure 3 It is a structural diagram of embodiment 2 of the present invention.
[0016] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:
[0017] 1. High-pressure oil pipe; 2. Connecting nut; 3. Bushing; 4. Injector interface; 5. O-ring. DETAILED DESCRIPTION
[0018] The implementation modes of the present invention are further described in detail below with reference to the accompanying drawings and examples.
[0019] Embodiment 1:
[0020] As attached Figure 1 To Attachment Figure 2 As shown:
[0021] The present invention provides a high-pressure oil pipe oil sealing structure, comprising: a high-pressure oil pipe 1, a connecting nut 2, a bushing 3, an injector interface 4 and an O-type sealing ring 5;
[0022] The inner end of the high-pressure oil pipe 1 is a frustum structure and is inserted into the rear end of the coupling nut 2, and a bushing 3 is sleeved on one side of the frustum structure. The inner end of the injector interface 4 is inserted into the front end of the coupling nut 2 and contacts the inner wall of the coupling nut 2, and a conical opening is provided at the inner end of the injector interface 4, and the conical opening contacts and engages with the frustum structure of the high-pressure oil pipe 1;
[0023] A cavity is extended outward from the rear end of the connecting nut 2, and a sealing groove 1 is provided in the inner wall cavity of the connecting nut 2 which contacts the diameter of the high-pressure oil pipe 1, and an O-ring 5 is installed in the sealing groove 1. The O-ring 5 in the sealing groove 1 is also mounted on the high-pressure oil pipe 1. The engine oil can be completely sealed by the O-ring 5 to prevent claims caused by oil leakage.
[0024] Embodiment 2:
[0025] As attached Figure 3 As shown:
[0026] The present invention provides a high-pressure oil pipe oil sealing structure, comprising: a high-pressure oil pipe 1, a connecting nut 2, a bushing 3, an injector interface 4 and an O-type sealing ring 5;
[0027] The inner end of the high-pressure oil pipe 1 is a frustum structure and is inserted into the rear end of the coupling nut 2, and a bushing 3 is sleeved on one side of the frustum structure. The inner end of the injector interface 4 is inserted into the front end of the coupling nut 2 and contacts the inner wall of the coupling nut 2, and a conical opening is provided at the inner end of the injector interface 4, and the conical opening contacts and engages with the frustum structure of the high-pressure oil pipe 1;
[0028] A sealing ring cavity is extended from the front side end of the connecting nut 2, and a sealing groove 2 is provided in the sealing ring cavity, an O-ring 5 is also installed in the sealing groove 2, and the O-ring 5 in the sealing groove 2 is also sleeved on the injector interface 4. The O-ring 5 can not only seal the diesel, but also seal the oil leakage. Even if the structure of the pipe end of the high-pressure oil pipe 1 fails, the diesel oil will not be mixed in, causing a major accident.
[0029] The specific usage and function of this embodiment are as follows:
[0030] In the present invention, by processing a sealing groove 1 on the rear end side of the connecting nut 2, and installing an O-ring 5, and sleeved on the high-pressure oil pipe 1, the engine oil can be completely sealed to prevent claims caused by oil leakage; by processing a sealing groove 2 on the front end of the connecting nut 2, and installing an O-ring 5, and sleeved on the injector interface 4, not only the diesel can be sealed, but also the engine oil leakage can be sealed, and multi-level sealing can be achieved. Even if the structure of the pipe end of the high-pressure oil pipe 1 fails, the diesel engine oil will not be mixed in, causing a major accident.
[0031] In this article, there are a few points to note:
[0032] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.
[0033] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.
[0034] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.
Claims
1. A high-pressure oil pipe oil sealing structure, comprising: High-pressure oil pipe (1), connecting nut (2), bushing (3), injector interface (4) and O-ring (5); The inner end of the high-pressure oil pipe (1) is a cone structure and is inserted into the rear end of the connecting nut (2), and a bushing (3) is sleeved on one side of the cone structure. The inner end of the injector interface (4) is inserted into the front end of the connecting nut (2) and contacts the inner wall of the connecting nut (2). The inner end of the injector interface (4) is provided with a conical opening, and the conical opening contacts and engages with the cone structure of the high-pressure oil pipe (1). The invention is characterized in that a cavity is extended outward from the rear end of the connecting nut (2), and a sealing groove 1 is provided in the inner wall cavity of the connecting nut (2) in contact with the diameter of the high-pressure oil pipe (1), and an O-type sealing ring (5) is installed in the sealing groove 1.
2. A high-pressure oil pipe oil sealing structure according to claim 1, characterized in that: The O-type sealing ring (5) in the sealing groove 1 is also sleeved on the high-pressure oil pipe (1).
3. The high-pressure oil pipe oil sealing structure according to claim 1, characterized in that: A sealing ring cavity is extended from the front side end of the connecting nut (2), and a sealing groove 2 is provided in the sealing ring cavity, and an O-type sealing ring (5) is also installed in the sealing groove 2.
4. A high-pressure oil pipe oil sealing structure according to claim 3, characterized in that: The O-type sealing ring (5) in the second sealing groove is also sleeved on the injector interface (4).