CN217301979U - Pipe joint assembly, engine cooling system and engine - Google Patents
Pipe joint assembly, engine cooling system and engine Download PDFInfo
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- CN217301979U CN217301979U CN202220829689.9U CN202220829689U CN217301979U CN 217301979 U CN217301979 U CN 217301979U CN 202220829689 U CN202220829689 U CN 202220829689U CN 217301979 U CN217301979 U CN 217301979U
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Abstract
The application discloses coupling subassembly, engine cooling system and engine, coupling subassembly are used for rotating with engine water route interface and are connected, coupling subassembly includes the coupling and be equipped with the lock nut, the coupling includes first linkage segment and the second linkage segment of a body coupling and coaxial setting, the lateral surface of first linkage segment is established to outer face of cylinder, outer face of cylinder is used for the internal face seal fit with engine water route interface, the second linkage segment is equipped with the external screw thread, the external screw thread be used for with engine water route interface threaded connection, be equipped with the lock nut install in be used for on the external screw thread with the coupling is equipped with tightly in engine water route interface. The utility model discloses coupling subassembly has guaranteed the long-term sealed of coupling and engine water route interface, and coupling installation noise greatly reduced is difficult for appearing noise pollution, and installation back fastening nature and reliability are high.
Description
Technical Field
The application relates to the technical field of engines, in particular to a pipe joint assembly, an engine cooling system and an engine.
Background
The engine is provided with a plurality of water pipes, and each water pipe has a specific purpose, for example, the water pipes can be a water inlet pipe and a water return pipe for connecting the engine and a water tank, and can also be cooling water pipes for connecting an engine cooling system with a radiator, a warm air and an expansion tank of the whole vehicle. The pipe joint is an important part for connecting the water pipe to a structure corresponding to the pipe joint, for example, the connection between the water pipe and an engine water pump needs to be realized through the pipe joint.
At present, the pipe joint adopted in the engine mainly has two mounting modes, one mode is a non-rotatable mode, and the other mode is a rotatable mode. For the non-rotatable pipe joint, because the installation angle requirements for the pipe joint are different, each matching manufacturer and each application need to design a separate pipe joint, so that the types of parts on the same part are too many, the standardized production of each pipe joint is difficult, and further the management and purchase cost is increased sharply. For the rotatable pipe joint, the installation method mainly includes the following three methods: (1) after the outer wall surface of the pipe joint is coated with the sealant, the pipe joint is violently knocked by a hammer to realize installation, but the method can generate great knocking noise and is not harmonious with the modern production process; (2) the pipe joint is connected to a corresponding structure through threads, and the sealant is arranged between the inner thread and the outer thread, but the distribution uniformity of the sealant in the screwing clearance of the inner thread and the outer thread is difficult to ensure, so that the failure rate of the pipe joint is high, and the water leakage phenomenon is easy to occur; (3) the F-type standard rotatable pipe joint is adopted for installation, the O-shaped sealing ring is screwed up through the nut and is added for sealing, but the O-shaped sealing ring and the nut are adopted for screwing up, the O-shaped sealing ring is required to be protected from being damaged in the nut screwing up process, a flat gasket which is pressed in and then turned over for shaping is used between the O-shaped sealing ring and the nut, the process is complex, and the cost is greatly increased. Therefore, it is desirable to provide a rotatable pipe joint with good sealing performance, high fastening performance and low noise during installation.
SUMMERY OF THE UTILITY MODEL
The application provides a coupling subassembly, engine cooling system and engine to solve at least one technical problem in the above-mentioned technical problem.
The technical scheme adopted by the application is as follows:
the utility model provides a coupling subassembly for rotate with engine water route interface and be connected, coupling subassembly includes the coupling and be equipped with the lock nut, the coupling includes first linkage segment and the second linkage segment of a body coupling and coaxial setting, the lateral surface of first linkage segment is established to outer face of cylinder, outer face of cylinder is used for the internal face seal fit with engine water route interface, the second linkage segment is equipped with the external screw thread, the external screw thread be used for with engine water route interface threaded connection, be equipped with the lock nut install in be used for on the external screw thread with the coupling is equipped with tightly in engine water route interface.
The pipe joint assembly in the present application also has the following additional technical features:
the pipe joint further comprises a third connecting section used for being connected with a pipeline of an engine, one end of the third connecting section is connected with the second connecting section, and the other end of the third connecting section extends towards the direction far away from the second connecting section.
The periphery of third linkage segment is equipped with the anticreep arch.
The central axis of the third connecting section is perpendicular to the central axis of the second connecting section.
The central axis of the third connecting section is coincident with the central axis of the second connecting section.
The engine cooling system comprises a water pump and further comprises the pipe joint assembly, wherein the pipe joint assembly is rotatably connected with a waterway interface of the water pump; the inner wall face of the waterway interface is provided with an internal thread matched with the external thread and an inner circular hole face corresponding to the outer circular hole face, the outer circular hole face is in clearance fit with the inner circular hole face, a first sealing adhesive layer is arranged between the outer circular hole face and the inner circular hole face, the external thread is connected with the internal thread, and the tightening nut is arranged on the external thread and tightly fastens the pipe joint on the waterway interface.
And a second sealing glue layer is arranged between the external thread and the internal thread.
The axial length of the external thread is larger than that of the tightening nut.
And part of the second sealant layer extends to the position between the tightening nut and the external thread.
The application provides an engine comprising an engine cooling system as described above.
Due to the adoption of the technical scheme, the technical effects obtained by the application are as follows:
in the technical scheme of this application, at first, the second linkage segment of coupling passes through the external screw thread and realizes being connected with the rotation of engine water route interface, makes the rotatable adjustment in order to satisfy installation angle of coupling, has promoted the suitability of coupling subassembly to different supporting, different usage, helps reducing the spare part assembly of engine, reduction in production cost.
Secondly, the lateral surface of the first linkage segment of coupling is established to outer face of cylinder, outer face of cylinder is used for sealing fit with the internal face of engine water route interface, compare in the mode of gluing sealed through between the internal and external screw thread in the current, outer face of cylinder has more simple and smooth surface compared with complicated helicitic texture, and the clearance between the internal face of outer face of cylinder and engine water route interface is controlled more easily, it establishes the homogeneity of the sealed glue between face of cylinder and engine water route interface internal face and the reliability and the life after the sealed glue solidification to change the assurance, and then guaranteed the long-term sealed of coupling and engine water route interface. Particularly, when the outer cylindrical surface is in clearance fit with the inner wall surface of the engine waterway interface, the sealant is conveniently coated, the mode that the pipe joint is in interference fit with the engine waterway interface and the pipe joint is installed through hammering in the prior art is not needed, the noise in the installation process of the pipe joint is greatly reduced, the noise pollution is not easy to occur, and the requirement of an engine assembly modern production line is met.
In addition, the second linkage segment of coupling is equipped with the external screw thread, the external screw thread is used for with engine water route interface threaded connection, be equipped with the lock nut and install on the external screw thread and be used for being equipped with tightly in engine water route interface with the coupling, on the basis that the coupling passes through external screw thread and engine water route interface threaded connection, through being equipped with the lock nut and be equipped with tightly to the coupling, realize the dual assurance of coupling installation fastening, and, on the basis of guaranteeing coupling installation fastening nature and reliability, still through the destruction moment that has increased the coupling and can bear together with the cooperation of outer face of cylinder and engine water route interface internal face, greatly reduced is to the influence of coupling when the water pipe of coupling connection rocks for a long time, the reliability and the life of coupling have been promoted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic structural view of a pipe coupling assembly provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a pipe joint assembly and a water pump which are provided in the embodiment of the present application after being matched.
Reference numerals are as follows:
1 coupling, 11 first linkage segments, 12 second linkage segments, 13 third linkage segments, 131 anticreep are protruding, 2 are equipped with tight nut, 3 water pumps, 31 water route interfaces.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the embodiments of the present application, a pipe joint assembly, an engine cooling system and an engine are provided, and for convenience of illustration and understanding, the following description is provided on the basis of the product structures shown in the drawings. Of course, it is understood by those skilled in the art that the above-described structure is only used as a specific example and illustrative illustration, and does not constitute a specific limitation to the technical solution provided by the present application.
As shown in fig. 1, a pipe joint assembly is used for being rotationally connected with an engine waterway interface, the pipe joint assembly includes a pipe joint 1 and a tightening nut 2, the pipe joint 1 includes a first connecting section 11 and a second connecting section 12 which are integrally connected and coaxially arranged, an outer side surface of the first connecting section 11 is set to be an outer cylindrical surface, the outer cylindrical surface is used for being in sealing fit with an inner wall surface of the engine waterway interface, the second connecting section 12 is provided with an external thread, the external thread is used for being in threaded connection with the engine waterway interface, and the tightening nut 2 is installed on the external thread and used for tightening the pipe joint 1 to the engine waterway interface.
As can be understood by those skilled in the art, in the technical solution of the present application, first, the second connection section 12 of the pipe joint 1 is rotationally connected to the engine waterway connector through an external thread, so that the pipe joint 1 can rotate to meet the requirement of adjusting the installation angle, thereby improving the adaptability of the pipe joint component to different matches and different purposes, facilitating the reduction of the component assemblies of the engine, and reducing the production cost.
Secondly, the lateral surface of the first connecting section 11 of the pipe joint 1 is set as an outer cylindrical surface, the outer cylindrical surface is used for being in sealing fit with the inner wall surface of the engine waterway interface, compared with the existing mode of gluing and sealing between inner and outer threads, the outer cylindrical surface has a simpler and smoother surface compared with a complex thread structure, in the actual processing technology, the circle run-out control difficulty of the outer cylindrical surface is smaller than that of an external thread, therefore, the gap between the outer cylindrical surface and the inner wall surface of the engine waterway interface is easier to control, the uniformity of the sealant coated between the outer cylindrical surface and the inner wall surface of the engine waterway interface and the reliability and service life of the cured sealant are easier to ensure, and further the long-term sealing of the pipe joint 1 and the engine waterway interface is ensured.
Particularly, as an optimal implementation mode, an outer cylindrical surface can be in clearance fit with the inner wall surface of the engine waterway interface, when the outer cylindrical surface is in clearance fit with the inner wall surface of the engine waterway interface, not only is coating of the sealant facilitated, but also a mode that the pipe joint 1 is in interference fit with the engine waterway interface and pipe joint installation is realized through hammering in the prior art is not needed, noise in the installation process is greatly reduced, noise pollution is not easy to occur, and the requirement of an engine assembly modern production line is met.
In addition, the second connecting section 12 of the pipe joint 1 is provided with an external thread which is used for being in threaded connection with the engine waterway interface, the tightening nut 2 is arranged on the external thread and is used for tightening the pipe joint 1 on the engine waterway interface, on the basis that the pipe joint 1 is in threaded connection with the engine waterway interface through the external thread, the pipe joint 1 is tightly equipped through the tightening nut 2, so that the double guarantee of installation and fastening of the pipe joint 1 is realized, in addition, on the basis of guaranteeing the installation fastening performance and the reliability of the pipe joint 1, the destructive moment that the pipe joint 1 can bear is increased through the cooperation with the outer cylindrical surface and the inner wall surface of the engine waterway interface, the influence on the pipe joint 1 when a water pipe connected with the pipe joint 1 is shaken for a long time (in a complex working condition, for example, when a vehicle runs on a bumpy road section, the water pipe is easy to shake) is greatly reduced, and the reliability and the service life of the pipe joint 1 are improved.
It should be noted that, the application does not specifically limit the engine waterway interface, for example, it may be a water inlet or a water outlet of a water pump in an engine cooling system, or may be a water outlet or a water return port of an engine water tank, or may be a water flow interface of a structure such as an engine radiator, a fan heater, a vaporizer, or an SCR water intake structure.
As a preferred embodiment of the present application, as shown in fig. 1, the pipe joint 1 further includes a third connecting section 13 for connecting with a pipeline of an engine, and one end of the third connecting section 13 is connected with the second connecting section 12, and the other end extends in a direction away from the second connecting section 12.
It can be understood by those skilled in the art that the third connecting section 13 facilitates the connection of the pipe joint 1 and the water pipe, compared with the case that the water pipe is directly connected with the second connecting section 12, so as to avoid the interference between the water pipe and the second connecting section 12 and the influence on the connection of the pipe joint 1 and the engine waterway connector.
Further, as shown in fig. 1, the outer circumference of the third connecting section 13 may be provided with a retaining protrusion 131.
It can be understood by those skilled in the art that after the water pipe is installed in cooperation with the third connecting section 13, the anti-dropping protrusion 131 can improve the anti-dropping performance of the water pipe and reduce the possibility of the water pipe dropping from the pipe joint 1.
It should be noted that the third connecting section 13 is not specifically limited in the present application, and any one of the following embodiments may be adopted:
example 1: as shown in fig. 1, the central axis of the third connecting section 13 is perpendicular to the central axis of the second connecting section 12.
The central axis of the third connecting section 13 is perpendicular to the central axis of the second connecting section 12, so that the pipe joint 1 is in an L-shaped structure as a whole.
Example 2: although not shown in the drawings, in the embodiment, the central axis of the third connecting section may coincide with the central axis of the second connecting section.
The central axis of the third connecting section is superposed with the central axis of the second connecting section, so that the pipe joint is in a linear structure.
As shown in fig. 2, the engine cooling system provided by the present application includes a water pump 3, and the engine cooling system further includes the pipe joint assembly as described above, where the pipe joint assembly is rotationally connected to a waterway interface 31 of the water pump 3; the inner wall face of the waterway interface 31 is provided with an internal thread matched with the external thread and an inner circular hole face corresponding to the outer circular hole face, the outer circular hole face is in clearance fit with the inner circular hole face, a first sealing adhesive layer is arranged between the outer circular hole face and the inner circular hole face, the external thread is connected with the internal thread, and the tightening nut 2 is arranged on the external thread and tightly fastens the pipe joint 1 on the waterway interface 31.
The waterway interface 31 of the water pump 3 can be a water inlet of the water pump 3 and can also be a water outlet of the water pump 3. Specifically, when the pipe joint assembly is installed, the tightening nut 2 can be preassembled at a suitable position of the external thread, for example, the tightening nut 2 can be preassembled at one end of the second connecting section 12, which is far away from the first connecting section 11, then a first sealant layer is coated on the outer cylindrical surface, then the pipe joint 1 is screwed into the waterway interface 31 of the water pump 3 until the outer cylindrical surface is in sealing fit with the inner circular hole surface of the waterway interface 31, then the tightening nut 2 is turned around to tighten the pipe joint 1 on the waterway interface 31 through the tightening nut 2, so that long-term sealing of the pipe joint 1 and the waterway interface 31 is realized by the first sealant layer between the outer cylindrical surface and the inner circular hole surface, and double fastening of the pipe joint 1 and the waterway interface 31 is realized by screwing of the external thread and the internal thread and tightening action of the tightening nut 2.
Since the engine cooling system provided by the present application includes the pipe joint assembly in any of the above embodiments, the beneficial effects of the pipe joint assembly are all included in the engine cooling system provided by the present application, and are not described herein again.
As a preferred embodiment of the present application, a second sealant layer may be provided between the external thread and the internal thread.
Those skilled in the art can understand that the second sealant layer is arranged between the external thread and the internal thread, so that the connection tightness between the pipe joint 1 and the waterway interface 31 is further improved, and the leakage-proof effect after the pipe joint 1 is installed is further improved.
Further, the axial length of the external thread can be made larger than the axial length of the backup nut 2.
It will be appreciated by those skilled in the art that by making the axial length of the external thread greater than the axial length of the backup nut 2, sufficient space is left for the mating of the backup nut 2 and the external thread and the mating of the external thread and the internal thread. When the tightening nut 2 is pre-assembled, the space does not need to be vacated for the matching of the external thread and the internal thread, so that the tightening nut 2 is separated from the external thread to increase the rotation difficulty of the tightening nut 2.
Furthermore, it is also possible to extend a portion of the second sealant layer between the back-up nut 2 and the external thread.
By extending part of the second sealing adhesive layer to the position between the tightening nut 2 and the external thread, the sealing effect of the connection of the pipe joint 1 and the waterway interface 31 is further improved. During specific installation, after the external thread is preassembled at one end far away from the first connecting section 11 of the external thread, the spare fastening nut 2 can be coated with a second sealing adhesive layer on the rest external thread which is not matched with the spare fastening nut 2, and after the rotary fastening nut 2 fastens the pipe joint 1 on the waterway interface 31, the second sealing adhesive layer is arranged between the spare fastening nut 2 and the external thread.
The application provides an engine comprising the engine cooling system.
Because the engine includes the engine cooling system as described above, the engine cooling system has beneficial effects that the engine provided by the present application includes, and details are not repeated herein.
Where not mentioned in this application, can be accomplished using or referencing existing technology.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides a coupling subassembly for rotate with engine water route interface and be connected, its characterized in that, coupling subassembly includes the coupling and is equipped with tight nut, the coupling includes first linkage segment and the second linkage segment of body coupling and coaxial setting, the lateral surface of first linkage segment is established to outer face of cylinder, outer face of cylinder is used for the internal face seal fit with engine water route interface, the second linkage segment is equipped with the external screw thread, the external screw thread be used for with engine water route interface threaded connection, be equipped with tight nut install in on the external screw thread and be used for with the coupling is equipped with tightly in engine water route interface.
2. The coupling assembly of claim 1,
the pipe joint further comprises a third connecting section used for being connected with a pipeline of an engine, one end of the third connecting section is connected with the second connecting section, and the other end of the third connecting section extends towards the direction far away from the second connecting section.
3. The coupling assembly of claim 2,
the periphery of third linkage segment is equipped with the anticreep arch.
4. The coupling assembly of claim 3,
the central axis of the third connecting section is perpendicular to the central axis of the second connecting section.
5. The coupling assembly of claim 3,
the central axis of the third connecting section coincides with the central axis of the second connecting section.
6. An engine cooling system comprising a water pump, wherein the engine cooling system further comprises a pipe joint assembly according to any one of claims 1 to 5, wherein the pipe joint assembly is rotatably connected with a waterway interface of the water pump;
the inner wall face of the waterway interface is provided with an internal thread matched with the external thread and an inner circular hole face corresponding to the outer circular hole face, the outer circular hole face is in clearance fit with the inner circular hole face, a first sealing adhesive layer is arranged between the outer circular hole face and the inner circular hole face, the external thread is connected with the internal thread, and the tightening nut is arranged on the external thread and tightly fastens the pipe joint on the waterway interface.
7. Engine cooling system according to claim 6,
and a second sealing glue layer is arranged between the external thread and the internal thread.
8. Engine cooling system according to claim 7,
the axial length of the external thread is larger than that of the tightening nut.
9. Engine cooling system according to claim 8,
and part of the second sealant layer extends to the position between the tightening nut and the external thread.
10. An engine comprising an engine cooling system according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220829689.9U CN217301979U (en) | 2022-04-11 | 2022-04-11 | Pipe joint assembly, engine cooling system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220829689.9U CN217301979U (en) | 2022-04-11 | 2022-04-11 | Pipe joint assembly, engine cooling system and engine |
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| Publication Number | Publication Date |
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| CN217301979U true CN217301979U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220829689.9U Active CN217301979U (en) | 2022-04-11 | 2022-04-11 | Pipe joint assembly, engine cooling system and engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093373A1 (en) * | 2022-10-31 | 2024-05-10 | 比亚迪股份有限公司 | Pipeline fixing member, vehicle system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093373A1 (en) * | 2022-10-31 | 2024-05-10 | 比亚迪股份有限公司 | Pipeline fixing member, vehicle system and vehicle |
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