Sealing ring of connecting pipe assembly, connecting pipe assembly, water cooling plate assembly and vehicle

Abstract

The utility model relates to the technical field of sealing, in particular to a sealing ring of a connecting pipe assembly, the connecting pipe assembly, a water cooling plate assembly and a vehicle, and aims to solve the problems that the sealing effect and reliability of the joint of a water inlet pipe connector of an existing water cooling plate and a water outlet connector on a cold water tank are poor, and the machining cost of the water inlet pipe connector is high. In order to achieve the purpose, the pipe connecting assembly comprises a first pipe connector with a first pipe body, a second pipe connector with a second pipe body and a sealing ring, the inner wall face of the second pipe body comprises a first barrel-shaped face, a step face and a second barrel-shaped face, and the sealing ring comprises a framework with a third pipe body and an elastic material layer on the surface of the framework. Three annular sealing lips are respectively formed on the outer wall surface and the inner wall surface of the third pipe body and the outer surface of the elastic material layer on the second end surface, the three pipe bodies are nested in an installed state, and the three annular sealing lips respectively abut against the first cylindrical surface, the outer wall surface of the first pipe body and the step surface and deform.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, and specifically provides a sealing ring of a connecting pipe assembly, a connecting pipe assembly, a water cooling plate assembly and a vehicle. Background Art

[0002] Motor-driven vehicles have components (such as battery packs) that require timely heat dissipation. Using a water cooling plate to dissipate heat is one of the main ways to dissipate heat from a battery pack. A water flow channel is provided in the water cooling plate, and the inlet end of the water flow channel in the water cooling plate is connected to the cold water tank through a pipe assembly so that the cold water tank can pass cooling water into the water flow channel. The pipe assembly includes an inlet pipe joint provided on the water cooling plate and connected to the water flow channel, and an outlet pipe joint provided on the cold water tank. The inlet pipe joint and the outlet pipe joint are plug-connected, and an O-ring is usually used to seal between the two. The water cooling plate, the pipe, and the inlet pipe joint are usually made in one of the following ways: Method 1: integrally formed by metal die-casting, and an annular groove for installing an O-ring is machined on the outer wall of the metal inlet pipe joint; Method 2: integrally formed by plastic injection molding. For method one, the processing cost of the annular groove is high, and the sealing effect and reliability of using an O-ring are poor, and the risk of water leakage at the connection between the water inlet pipe joint and the water outlet pipe joint is high; for method two, the annular groove on the outer wall of the water inlet pipe joint is directly formed by an injection molding process, but a split mold structure is required, the mold opening cost is high, and the resulting parting line will affect the installation of the O-ring, and the sealing effect and reliability are poor.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above technical problem, namely, to solve the problem that the sealing effect and reliability of the connection between the water inlet pipe joint of the existing water cooling plate and the water outlet pipe joint on the cold water tank are poor and the processing cost of the water inlet pipe joint is high.

[0005] In a first aspect, the utility model provides a sealing ring of a connecting pipe assembly, the connecting pipe assembly comprising a first pipe joint, a second pipe joint and the sealing ring, the first pipe joint comprising a first pipe body, the second pipe joint comprising a second pipe body, the inner wall surface of the second pipe body comprising a first cylindrical surface, a step surface and a second cylindrical surface distributed in sequence from the first end toward the second end, the sealing ring comprising a skeleton, the skeleton comprising a third pipe body, the surface of the skeleton is provided with an elastic material layer, the outer surface of the elastic material layer on the outer wall surface, the inner wall surface and the second end surface of the third pipe body are respectively formed with a first annular sealing lip, a second annular sealing lip and a third annular sealing lip, in an installed state, the second pipe body, the third pipe body and the first pipe body are nested, the first annular sealing lip, the second annular sealing lip and the third annular sealing lip respectively abut against the first cylindrical surface, the outer wall surface of the first pipe body and the step surface and deform.

[0006] In the preferred technical solution of the sealing ring, a first plate structure is radially extended outward from the first end of the first tube body; in the installed state, the elastic material layer of the first end face of the third tube body abuts against the surface of the first plate structure and deforms.

[0007] In the preferred technical solution of the above-mentioned sealing ring, the skeleton also includes a second plate structure extending radially outward from the first end of the third tube body; in the installed state, the second plate structure is clamped between the first plate structure and the first end face of the second tube body, the elastic material layer on the surface of the second plate structure facing the third tube body abuts against the first end face of the second tube body and is deformed, and the elastic material layer on the surface of the third tube body abuts against the surface of the first plate structure and is deformed.

[0008] In the preferred technical solution of the above-mentioned sealing ring, a plurality of the first annular sealing lips distributed along the axial direction of the third tube body are formed on the outer surface of the elastic material layer on the outer wall surface of the third tube body; and / or a plurality of the second annular sealing lips distributed along the axial direction of the third tube body are formed on the outer surface of the elastic material layer on the inner wall surface of the third tube body; and / or a plurality of the third annular sealing lips distributed in a nested manner are formed on the outer surface of the elastic material layer on the second end surface of the third tube body.

[0009] When the above technical solution is adopted, the connecting pipe assembly includes a first pipe joint, a second pipe joint and a sealing ring, the first pipe joint includes a first pipe body, the second pipe joint includes a second pipe body, the inner wall surface of the second pipe body includes a first cylindrical surface, a step surface and a second cylindrical surface distributed in sequence from the first end toward the second end, the sealing ring includes a skeleton, the skeleton includes a third pipe body, the surface of the skeleton is provided with an elastic material layer, and the outer surfaces of the elastic material layer on the outer wall surface, the inner wall surface and the second end surface of the third pipe body are respectively formed with a first annular sealing lip, a second annular sealing lip and a third annular sealing lip; in an installed state, the second pipe body, the third pipe body and the first pipe body are nested, and the first annular sealing lip, the second annular sealing lip and the third annular sealing lip respectively abut against the first cylindrical surface, the outer wall surface and the step surface of the first pipe body and are deformed.

[0010] Through such an arrangement, when the water-cooled plate and the cold water tank are connected by the above-mentioned connecting pipe assembly, there is no need to process an annular groove with high precision on the outer wall of the water inlet pipe joint, which reduces the processing cost. The first annular sealing lip, the second annular sealing lip, and the third annular sealing lip of the sealing ring respectively abut against the first cylindrical surface of the inner wall of the second tube body, the outer wall surface of the first tube body, and the step surface of the inner wall of the second tube body and deform, and radial sealing and axial sealing are achieved at the same time. The multi-channel sealing in different directions improves the sealing effect and reliability. Specifically, the first annular sealing lip of the sealing ring can prevent the cooling water from flowing axially along the first cylindrical surface of the inner wall of the second tube body, and the second annular sealing lip of the sealing ring can prevent the cooling water from flowing axially along the outer wall surface of the first tube body, thereby achieving radial sealing; the third annular sealing lip of the sealing ring can prevent the cooling water from flowing radially along the step surface of the inner wall of the second tube body, thereby achieving axial sealing. In addition, during the assembly of the connecting pipe assembly, the first annular sealing lip and the second annular sealing lip respectively abut against the first cylindrical surface and the outer wall surface of the first tube body, and can automatically align the first tube body and the second tube body under the action of elastic force, thereby ensuring assembly accuracy and achieving good sealing.

[0011] Preferably, a first plate structure is radially extended outward from the first end of the first tube body, and in an installed state, the elastic material layer on the first end surface of the third tube body abuts against the surface of the first plate structure and is deformed.

[0012] Through such an arrangement, the sealing area of ​​the sealing structure is increased, and the sealing effect and reliability are further improved.

[0013] Preferably, the skeleton also includes a second plate structure extending radially outward from the first end of the third tube body; in the installed state, the second plate structure is clamped between the first plate structure and the first end face of the second tube body, the elastic material layer on the surface of the second plate structure facing the third tube body abuts against the first end face of the second tube body and deforms, and the elastic material layer on the surface of the third tube body abuts against the surface of the first plate structure and deforms.

[0014] Through such an arrangement, the sealing area of ​​the sealing structure is increased, and the sealing effect and reliability are further improved.

[0015] Preferably, a plurality of first annular sealing lips distributed along the axial direction of the third tube body are formed on the outer surface of the elastic material layer on the outer wall surface of the third tube body; and / or a plurality of second annular sealing lips distributed along the axial direction of the third tube body are formed on the outer surface of the elastic material layer on the inner wall surface of the third tube body; and / or a plurality of nested third annular sealing lips are formed on the outer surface of the elastic material layer on the second end surface of the third tube body.

[0016] Through such an arrangement, the number of sealing lips is further increased, and the sealing effect and reliability are further improved.

[0017] In a second aspect, the utility model further provides a connecting pipe assembly, which is the connecting pipe assembly described in any one of the above technical solutions.

[0018] It should be noted that the connecting pipe assembly has all the technical effects that can be achieved by the sealing ring described in any of the above technical solutions, which will not be repeated here.

[0019] In a preferred technical solution of the above-mentioned connecting pipe assembly, in an installed state, a portion of the outer wall surface of the first pipe joint is in contact with the second cylindrical surface.

[0020] Through such an arrangement, the fit between the outer wall surface of the first pipe joint and the second cylindrical surface plays a certain sealing role, further improving the sealing effect and reliability between the first pipe joint and the second pipe joint.

[0021] In the preferred technical solution of the above-mentioned connecting pipe assembly, the outer wall surface of the first pipe body has a draft angle.

[0022] Through such arrangement, the first pipe joint is injection molded or die-casted, which facilitates the manufacture of the first pipe joint. In addition, since the outer wall surface of the first pipe body has a draft angle, it is also convenient to assemble the first pipe body and the sealing ring.

[0023] In a third aspect, the utility model also provides a water-cooled plate assembly, which includes the connecting pipe assembly described in any of the above technical solutions; the first pipe joint is fixedly connected to or integrally formed with the water-cooled plate of the water-cooled plate assembly, and the second pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooled plate assembly, or the second pipe joint is fixedly connected to or integrally formed with the water-cooled plate of the water-cooled plate assembly, and the first pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooled plate assembly.

[0024] It should be noted that the water-cooled plate assembly has all the technical effects of the connecting pipe assembly described in any of the above technical solutions, which will not be repeated here.

[0025] In the preferred technical solution of the above water-cooling plate assembly, the first pipe joint and the water-cooling plate of the water-cooling plate assembly are integrally injection-molded using a plastic material.

[0026] Through such an arrangement, the manufacturing cost of the water cooling plate assembly is lowered.

[0027] In a fourth aspect, the utility model further provides a vehicle, the vehicle comprising the connecting pipe assembly described in any one of the above technical solutions or the water cooling plate assembly described in the above technical solutions.

[0028] It should be noted that the vehicle has all the technical effects of the connecting pipe assembly or the water cooling plate assembly described in any of the above technical solutions, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a cross-sectional view of a first pipe joint in a water-cooling plate assembly according to an embodiment of the utility model;

[0031] Figure 2 It is a cross-sectional view of a second pipe joint in a water-cooling plate assembly according to an embodiment of the utility model;

[0032] Figure 3 It is a cross-sectional view of a sealing ring in a water-cooling plate assembly according to an embodiment of the utility model;

[0033] Figure 4 It is a cross-sectional view of a connecting pipe assembly in a water cooling plate assembly according to an embodiment of the utility model.

[0034] List of reference numerals:

[0035] 1. First pipe joint; 11. First pipe body; 12. First plate structure; 13. First reinforcing rib; 14. Second reinforcing rib; 2. Second pipe joint; 21. Second pipe body; 211. First cylindrical surface; 212. Step surface; 213. Second cylindrical surface; 3. Shell; 4. Sealing ring; 41. Skeleton; 411. Third pipe body; 412. Second plate structure; 42. Elastic material layer; 43. First annular sealing lip; 44. Second annular sealing lip; 45. Third annular sealing lip. DETAILED DESCRIPTION

[0036] First, those skilled in the art should understand that the embodiments described below are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0037] It should be noted that in the description of the utility model, the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a direct connection, or an indirect connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Based on the problems mentioned in the background technology that the sealing effect and reliability of the connection between the water inlet pipe joint of the existing water-cooled plate and the water outlet pipe joint on the cold water tank are poor, and the processing cost of the water inlet pipe joint is high, the utility model provides a sealing ring of a connecting pipe assembly and a connecting pipe assembly, the connecting pipe assembly comprises a first pipe joint, a second pipe joint and the sealing ring, the first pipe joint comprises a first pipe body, the second pipe joint comprises a second pipe body, the inner wall surface of the second pipe body comprises a first cylindrical surface, a step surface and a second cylindrical surface distributed in sequence from the first end toward the second end, the sealing ring comprises a skeleton, the skeleton comprises a third pipe body, the surface of the skeleton is provided with an elastic material layer, the outer wall surface, the inner wall surface and the outer surface of the elastic material layer on the second end surface of the third pipe body are respectively formed with a first annular sealing lip, a second annular sealing lip and a third annular sealing lip, in an installed state, the second pipe body, the third pipe body and the first pipe body are nested, and the first annular sealing lip, the second annular sealing lip and the third annular sealing lip are respectively abutted against the first cylindrical surface, the outer wall surface and the step surface of the first pipe body and deformed.

[0040] Through such an arrangement, when the water-cooled plate and the cold water tank are connected by the above-mentioned pipe assembly, it is not necessary to machine a high-precision annular groove on the outer wall of the water inlet pipe joint, thereby reducing the processing cost. The first annular sealing lip, the second annular sealing lip, and the third annular sealing lip of the sealing ring respectively abut against the first cylindrical surface of the inner wall of the second tube body, the outer wall surface of the first tube body, and the step surface of the inner wall of the second tube body and deform, thereby realizing radial sealing and axial sealing at the same time, and multiple sealing in different directions, thereby improving the sealing effect and reliability.

[0041] In addition, the utility model also provides a water-cooled plate assembly, which includes the above-mentioned connecting pipe assembly; the first pipe joint is fixedly connected to or integrally formed with the water-cooled plate of the water-cooled plate assembly, and the second pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooled plate assembly, or the second pipe joint is fixedly connected to or integrally formed with the water-cooled plate of the water-cooled plate assembly, and the first pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooled plate assembly.

[0042] In addition, the utility model also provides a vehicle, which includes the above-mentioned connecting pipe assembly or the above-mentioned water cooling plate assembly.

[0043] Refer to the following Figures 1 to 4 The utility model is introduced in detail in combination with the pipe assembly of the water cooling plate assembly. Figure 1 It is a cross-sectional view of a first pipe joint in a water-cooling plate assembly according to an embodiment of the utility model; Figure 2 It is a cross-sectional view of a second pipe joint in a water-cooling plate assembly according to an embodiment of the utility model; Figure 3 It is a cross-sectional view of a sealing ring in a water-cooling plate assembly according to an embodiment of the utility model; Figure 4 It is a cross-sectional view of a connecting pipe assembly in a water cooling plate assembly according to an embodiment of the utility model.

[0044] The water-cooling plate assembly includes a water-cooling plate (not shown in the figure), a cold water tank (not shown in the figure), and a pipe assembly connecting the water-cooling plate and the water-cooling tank. Figures 1 to 4 As shown, the pipe connection assembly of the water cooling plate assembly includes a first pipe joint 1 , a second pipe joint 2 and a sealing ring 4 .

[0045] like Figure 1 and Figure 4As shown, the first pipe joint 1 includes a first pipe body 11, and a first plate structure 12 is radially extended outward from the upper end of the first pipe body 11, and the first plate structure 12 constitutes a part of the water-cooling plate. The first plate structure 12, the water-cooling plate and the first pipe body 11 are integrally injection-molded by plastic material, and the outer wall surface of the first pipe body 11 has a draft angle. A first cylindrical reinforcing rib 13 coaxial with the first pipe body 11 is extended downward from the lower surface of the first plate structure 12, and a second reinforcing rib 14 is also formed on the lower surface of the first plate structure 12, and the second reinforcing rib 14 is connected to the outer side wall of the first reinforcing rib 13. The first pipe body 11, the first plate structure 12, the first reinforcing rib 13, and the second reinforcing rib 14 are integrally formed.

[0046] like Figure 2 and Figure 4 As shown, the second pipe joint 2 includes a second pipe body 21, the lower end of the second pipe body is connected to the shell 3 of the water cooling box, and the second pipe body 21 is integrally formed with the shell 3 of the water cooling box. The inner wall surface of the second pipe body 21 includes a first cylindrical surface 211, a step surface 212, and a second cylindrical surface 213 distributed in sequence from the upper end to the lower end. The first cylindrical surface 211 and the second cylindrical surface 213 are coaxially arranged with the second pipe body 21.

[0047] like Figure 3 and Figure 4 As shown, the sealing ring 4 includes a skeleton 41 and an elastic material layer 42 coated on the surface of the skeleton 41. The skeleton 41 includes a third tube 411 and a second plate structure 412 extending radially outward from the upper end of the third tube 411. Three first annular sealing lips 43 are formed on the outer surface of the elastic material layer on the outer wall surface of the third tube 411, and the three first annular sealing lips 43 are sequentially distributed along the axial direction of the third tube 411. Three second annular sealing lips 44 are formed on the outer surface of the elastic material layer on the inner wall surface of the third tube 411, and the three second annular sealing lips 44 are sequentially distributed along the axial direction of the third tube 411. Two nested third annular sealing lips 45 are formed on the outer surface of the elastic material layer on the lower end surface of the third tube 411. The skeleton 41 is made of metal material, and the elastic material layer 42, the first annular sealing lips 43, the second annular sealing lips 44, and the third annular sealing lips 45 are made of rubber material.

[0048] like Figure 4As shown, in the installed state, the second tube body 21, the third tube body 411 and the first tube body 11 are nested, and the second plate structure 412 is sandwiched between the first plate structure 12 and the upper end surface of the second tube body 21. The first annular sealing lip 43 abuts against the first cylindrical surface 211 and deforms, the second annular sealing lip 44 abuts against the outer wall surface of the first tube body 11 and deforms, and the third annular sealing lip 45 abuts against the step surface 212 and deforms. The elastic material layer on the upper end surface of the third tube body 411 and the elastic material layer on the upper surface of the second plate structure 412 abut against the lower surface of the first plate structure 12 and deform, and the elastic material layer on the lower surface of the second plate structure 412 abuts against the upper end surface of the second tube body 21 and deforms. The cylindrical first reinforcing rib 13 is sleeved on the outside of the second tube body 21 from the upper end of the second tube body 21.

[0049] Compared with a single-layer O-ring, the sealing ring of the utility model has a larger sealing area, a multi-stage sealing structure, better sealing effect and sealing reliability, and no groove for installing the sealing ring is required to be processed on the outer wall of the pipe, thereby reducing the processing cost. The sealing ring of the utility model improves the overall rigidity of the sealing ring by arranging a skeleton 41 inside, which can keep the sealing lip in a sealed state better, thereby improving the sealing effect and reliability. The first annular sealing lip 43, the second annular sealing lip 44, and the third annular sealing lip 45 of the sealing ring respectively abut against the first cylindrical surface 211 of the inner wall of the second tube body 21, the outer wall surface of the first tube body 11, and the step surface 212 of the inner wall of the second tube body 21 and deform, while achieving sealing in the radial and axial directions, and multiple sealing in different directions, thereby improving the sealing effect and reliability. The first annular sealing lip 43 and the second annular sealing lip 44 are respectively arranged in three, which increases the number of sealing lips and further improves the sealing effect and reliability.

[0050] On the basis of the above embodiment, preferably, a portion of the outer surface of the first tube body 11 close to the lower end is in contact with the second cylindrical surface 213 .

[0051] By such a setting, a seal is added at the contact position between the outer surface of the first tube body 11 and the second cylindrical surface 213, further improving the sealing effect and reliability of the connection of the pipe assembly. It should be noted that the outer surface of the first tube body 11 near the lower end can be a clearance fit, a transition fit, or an interference fit with the second cylindrical surface 213. When the outer surface of the first tube body 11 near the lower end is an interference fit with the second cylindrical surface 213, the sealing effect here is better, but it is not as convenient to assemble as the transition fit and the clearance fit. In addition, the outer surface of the first tube body 11 near the lower end is fitted with the second cylindrical surface 213, which can be the outer surface of the first tube body 11 near the lower end The part of the second cylindrical surface 213 fits, or the outer surface of the first tube body 11 near the lower end fits with the entire second cylindrical surface 213. The outer surface of the first tube body 11 near the lower end fits with the entire second cylindrical surface 213, and the fitting surface is larger, and the sealing effect is better.

[0052] In another feasible embodiment, different from the above embodiment, the frame 41 does not include the second plate structure 412 in the above embodiment. In the installed state, the upper end of the second tube 21 and the elastic material layer on the upper end surface of the third tube 411 are both against the lower surface of the first plate structure 12.

[0053] It should be noted that the number of the first annular sealing lips 43 and the second annular sealing lips 44 are three respectively, and the number of the third annular sealing lips 45 is two. This is only a more preferred setting mode, which can be adjusted in practical applications, such as the number of the first annular sealing lips 43 can be one, two, four or more, the second annular sealing lips 44 can be one, two, four or more, the number of the first annular sealing lips 43 and the second annular sealing lips 44 can be the same or different, and the third annular sealing lips 45 can be one, three or more. In addition, the skeleton 41 is made of metal material, and the elastic material layer 42, the first annular sealing lip 43, the second annular sealing lip 44, and the third annular sealing lip 45 are made of rubber material. This is only a specific setting mode, which can be adjusted in practical applications, such as the skeleton 41 can also be made of ceramics or other suitable non-metallic materials, and the elastic material layer 42, the first annular sealing lip 43, the second annular sealing lip 44, and the third annular sealing lip 45 can be made of silicone or other suitable elastic materials.

[0054] It should also be noted that the first plate structure 12 of the first pipe joint 1 is integrally formed with the water-cooling plate, and the second tube body 21 of the second pipe joint 2 is integrally formed with the shell 3 of the water-cooling box. This is only a specific setting method, and it can be adjusted in actual application. For example, the first plate structure 12 of the first pipe joint 1 is integrally formed with the shell 3 of the water-cooling box, and the second tube body 21 of the second pipe joint 2 is integrally formed with the water-cooling plate. In other words, the first pipe joint 1 and the second pipe joint 2 are swapped.

[0055] Although the above embodiment is described in conjunction with the pipe assembly of the water cooling plate assembly, the pipe assembly of the above embodiment can also be applied to other structures that need to be connected by pipes. The first pipe joint 1 in the pipe assembly may not be provided with the first plate structure 12 in the above embodiment.

[0056] In addition, the utility model also provides a vehicle, which includes the water cooling plate assembly or the pipe assembly in the above embodiment. The vehicle can be a motor-driven vehicle, an engine-driven vehicle, or a hybrid vehicle.

[0057] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A sealing ring of a pipe assembly, characterized in that: The pipe connection assembly comprises a first pipe joint, a second pipe joint and the sealing ring, wherein the first pipe joint comprises a first pipe body, the second pipe joint comprises a second pipe body, and the inner wall surface of the second pipe body comprises a first cylindrical surface, a step surface and a second cylindrical surface sequentially distributed from the first end toward the second end. The sealing ring comprises a frame, the frame comprises a third tube body, an elastic material layer is provided on the surface of the frame, and a first annular sealing lip, a second annular sealing lip, and a third annular sealing lip are respectively formed on the outer wall surface, the inner wall surface, and the outer surface of the elastic material layer on the second end surface of the third tube body. In the installed state, the second tube body, the third tube body and the first tube body are nested, and the first annular sealing lip, the second annular sealing lip and the third annular sealing lip respectively abut against the first cylindrical surface, the outer wall surface of the first tube body and the step surface and are deformed.

2. The sealing ring according to claim 1, characterized in that: A first plate structure is radially extended outward from the first end of the first tube; In the installed state, the elastic material layer on the first end surface of the third tube body abuts against the surface of the first plate structure and is deformed.

3. The sealing ring according to claim 2, characterized in that: The skeleton further includes a second plate structure extending radially outward from the first end of the third tube body; In the installed state, the second plate structure is clamped between the first plate structure and the first end face of the second tube body, the elastic material layer on the surface of the second plate structure facing the third tube body abuts against the first end face of the second tube body and deforms, and the elastic material layer on the surface of the second plate structure facing away from the third tube body abuts against the surface of the first plate structure and deforms.

4. The sealing ring according to any one of claims 1 to 3, characterized in that: A plurality of first annular sealing lips distributed along the axial direction of the third tube are formed on the outer surface of the elastic material layer on the outer wall surface of the third tube; and / or A plurality of the second annular sealing lips distributed along the axial direction of the third tube are formed on the outer surface of the elastic material layer on the inner wall surface of the third tube; And / or a plurality of nested and distributed third annular sealing lips are formed on the outer surface of the elastic material layer on the second end surface of the third tube body.

5. A pipe connection assembly, characterized in that: The connecting pipe assembly is the connecting pipe assembly according to any one of claims 1 to 4.

6. The connecting pipe assembly according to claim 5, characterized in that: In the installed state, a portion of the outer wall surface of the first pipe joint is in contact with the second cylindrical surface.

7. The pipe assembly according to claim 5, characterized in that: The outer wall surface of the first tube has a draft angle.

8. A water cooling plate assembly, characterized in that: The water-cooled plate assembly comprises a pipe connection assembly according to any one of claims 5 to 7; the first pipe joint is fixedly connected to or integrally formed with the water-cooled plate of the water-cooled plate assembly, the second pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooled plate assembly, or The second pipe joint is fixedly connected to or integrally formed with the water-cooling plate of the water-cooling plate assembly, and the first pipe joint is fixedly connected to or integrally formed with the shell of the cold water tank of the water-cooling plate assembly.

9. The water cooling plate assembly according to claim 8, characterized in that: The first pipe joint and the water-cooling plate of the water-cooling plate assembly are integrally injection-molded using plastic material.

10. A vehicle, characterized in that: The vehicle includes the pipe assembly described in any one of 5 to 7 or the water cooling plate assembly described in claim 8 or 9.

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