Heat sink sleeve and engine stand exhaust pipe heat sink system

Abstract

The application relates to a heat dissipation sleeve and an engine bench exhaust pipe heat dissipation system. The heat dissipation sleeve comprises a pipe body, a heat absorption pipe and a heat insulation piece; the heat absorption pipe is arranged on the outer surface of the pipe body, the heat absorption pipe extends along an arch shape, and the heat absorption pipe is in thermal conduction with the pipe body; opposite ends of the heat absorption pipe are respectively provided with a liquid inlet and a liquid outlet, a liquid cavity is arranged in the heat absorption pipe, and the liquid cavity is in communication with the liquid inlet and the liquid outlet; and the heat insulation piece is sleeved outside the pipe body and the heat absorption pipe. The scheme provided by the application can meet the heat dissipation requirement of the exhaust pipe in the bench test.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to a cooling sleeve and an engine bench exhaust pipe cooling system. Background Technology

[0002] In high-temperature calibration bench tests of engines, the engine generates a lot of heat under high load conditions. When it is necessary to maintain high load parameters for a long time to collect engine data, the exhaust pipe has limited capacity. In order to improve the service life of the exhaust pipe and reduce the impact of the high heat of the engine under high load conditions on the environmental chamber equipment, bench, and components, it is usually necessary to install an exhaust pipe heat sink on the exhaust pipe.

[0003] In related technologies, the engine bench test conditions in bench tests are different from those in vehicle tests. When a vehicle is in motion, it has air intake grilles, radiators, etc. to dissipate heat from the exhaust pipe. The exhaust system of a vehicle is longer and can achieve better heat dissipation. However, in bench tests, due to the limited space of the test chamber, the exhaust pipe is generally of limited length, the heat generation is more concentrated, and the heat dissipation is more difficult. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a heat dissipation sleeve and an engine bench exhaust pipe heat dissipation system that can meet the heat dissipation requirements of the exhaust pipe during bench testing.

[0005] This application provides a heat dissipation sleeve, which includes a tube body, a heat absorption tube, and a heat insulation component; the heat absorption tube abuts against the outer surface of the tube body, the heat absorption tube extends in an arc shape, and the heat absorption tube conducts heat with the tube body; an inlet and an outlet are respectively opened at opposite ends of the heat absorption tube, and a liquid cavity is opened inside the heat absorption tube, the liquid cavity being connected to the inlet and the outlet respectively; the heat insulation component is sleeved on the tube body and the heat absorption tube.

[0006] Furthermore, the tube body is provided with fins, the fins are located on the outer surface of the tube body, the heat-absorbing tube abuts against the fins, and the heat-absorbing tube conducts heat with the fins.

[0007] Furthermore, the heat absorption tube extends along an arc shape and forms multiple C-shaped notches, and there are multiple fins, each fin located in one of the notches, with each fin corresponding to one of the notches.

[0008] Furthermore, the fins are elongated strips, with both sides of the fins abutting against the heat absorption tube in the width direction.

[0009] Furthermore, there are four heat-absorbing tubes, which are distributed sequentially along the circumference of the tube body and are symmetrical about the central axis of the tube body.

[0010] Furthermore, the heat insulation component includes a heat insulation layer and a heat insulation cover. The heat insulation layer is tubular and is sleeved over the tube body and the heat absorption tube. The heat insulation cover is connected to the heat insulation layer and is used to fix the heat insulation layer to the outside of the heat absorption tube.

[0011] Furthermore, the heat insulation cover is tubular, and the heat insulation cover is sleeved on the outside of the heat insulation layer. Each of the opposite ends of the heat insulation cover is provided with an end edge, which is located on the axial direction of the heat insulation layer and abuts against the heat insulation layer.

[0012] Furthermore, each of the two opposite ends of the tube body is provided with a limiting part, which is located on the side of the tube body. The heat absorption tube includes a main body, an outlet tube, and an inlet tube. The main body is located between the two limiting parts. One end of the outlet tube is connected to the main body and crosses the limiting part. The outlet is located in the outlet tube. One end of the inlet tube is connected to the main body and crosses the limiting part. The inlet is located in the inlet tube.

[0013] Furthermore, the heat insulation layer is located between the liquid inlet pipe and the liquid outlet pipe, and the heat insulation cover, the liquid inlet pipe and the liquid outlet pipe surround the heat insulation layer.

[0014] Another aspect of this application provides an engine bench exhaust pipe cooling system, which includes the heat dissipation sleeve, an engine, a temperature sensor, and a water-cooling device. The engine is provided with an exhaust pipe, the temperature sensor is connected to the exhaust pipe, the water-cooling device is connected to the heat absorption pipe, the water-cooling device is used to exchange coolant with the heat absorption pipe, and the heat dissipation sleeve is fitted outside the exhaust pipe and conducts heat with the exhaust pipe.

[0015] The technical solution provided in this application may include the following beneficial results: the heat absorption tube is set on the outer surface of the tube body, so that the heat absorption tube extends along the bow shape on the outer surface of the tube body, thereby increasing the contact area between the heat absorption tube and the tube body, improving the heat conduction efficiency of the heat absorption tube to the tube body, and still meeting the heat dissipation requirements of the exhaust pipe even for a relatively short exhaust pipe. At the same time, a heat insulation component is set on the outside of the heat absorption tube to prevent heat diffusion while cooling down.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the structure of the heat dissipation sleeve shown in the embodiments of this application;

[0019] Figure 2 This is a cross-sectional view of the heat dissipation sleeve shown in the embodiment of this application;

[0020] Figure 3 This is a diagram illustrating the combination of the tube body and the heat absorption tube as shown in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the tube body shown in the embodiments of this application;

[0022] Figure 5 This is a schematic diagram of the heat absorption tube shown in the embodiment of this application.

[0023] Reference numerals: tube body 1; fins 11; limiting part 12; heat absorption tube 2; main body 21; liquid outlet tube 22; liquid inlet tube 23; notch 24; heat insulation component 3; heat insulation layer 31; heat insulation cover 32; end edge 33. Detailed Implementation

[0024] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0025] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In related technologies, the engine bench test conditions differ from those of a complete vehicle test. During vehicle operation, the exhaust pipe is cooled by components such as the air intake grille and radiator, and the vehicle's exhaust system is longer, allowing for better heat dissipation. However, in bench tests, the exhaust pipe is generally of limited length due to the confined space of the test chamber, resulting in more concentrated heat and greater difficulty in heat dissipation. To address these issues, this application provides a heat dissipation sleeve and an engine bench exhaust pipe cooling system that can meet the heat dissipation requirements of the exhaust pipe during bench tests.

[0029] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0030] See Figure 1 The heat dissipation sleeve includes a tube body 1, a heat absorption tube 2, and a heat insulation component 3. The tube body 1 is used to absorb heat from the engine's exhaust pipe. The tube body 1 can be directly sleeved on the engine's exhaust pipe and in direct contact with the exhaust pipe, thereby conducting heat with the engine's exhaust pipe; the tube body 1 can also be placed on one side of the engine's exhaust pipe and connected to the engine's exhaust pipe through a heat-conducting component, thereby conducting heat indirectly with the engine's exhaust pipe.

[0031] See Figure 1 and Figure 2The tube body 1 is made of copper, which has a melting point of 1084℃ and can withstand the high temperature of 800~900℃ in the exhaust pipe, while also possessing excellent thermal conductivity. The heat-absorbing tube 2 rests against the outer surface of the tube body 1, and its diameter is smaller than that of the tube body 1. The heat-absorbing tube 2 extends along an arc shape on the outer surface of the tube body 1. Heat conduction occurs between the heat-absorbing tube 2 and the tube body 1; the heat generated by the engine's exhaust pipe can be transferred to the tube body 1, and then the heat from the tube body 1 can be transferred to the heat-absorbing tube 2. An inlet and an outlet are respectively provided at opposite ends of the heat-absorbing tube 2. A liquid cavity is formed inside the heat-absorbing tube 2, in which coolant can flow. The liquid cavity extends along an arc shape and is connected to both the inlet and outlet. Coolant can enter the liquid cavity through the inlet and then flow out through the outlet. The coolant can absorb the heat transferred from the tube body 1 and then carry the heat away from the liquid cavity. The heat insulation component 3 is fitted over the tube body 1 and the heat absorption tube 2. The heat insulation component 3 can prevent the heat of the tube body 1 and the heat absorption tube 2 from dissipating to the components adjacent to the exhaust pipe, avoid the exhaust pipe affecting the normal operation of other components, and ensure that the large amount of heat generated by the exhaust pipe is carried away by the coolant.

[0032] In this application, the heat absorption tube 2 is disposed on the outer surface of the tube body 1, so that the heat absorption tube 2 extends along the bow shape on the outer surface of the tube body 1, thereby increasing the contact area between the heat absorption tube 2 and the tube body 1 and improving the heat conduction efficiency of the heat absorption tube 2 to the tube body 1. Even with a relatively short exhaust pipe, the heat dissipation requirements of the exhaust pipe can still be met. At the same time, a heat insulation component 3 is disposed outside the heat absorption tube 2 to prevent heat diffusion while cooling down.

[0033] See Figure 3 and Figure 4 In some embodiments, the tube body 1 is provided with fins 11, which are located on the outer surface of the tube body 1. The heat absorption tube 2 abuts against the fins 11, and the heat absorption tube 2 conducts heat with the fins 11. In addition to contacting the side of the tube body 1, the heat absorption tube 2 also contacts the fins 11, thereby increasing the contact area between the heat absorption tube 2 and the tube body 1 and improving the thermal conductivity of the tube body 1 and the heat absorption tube 2.

[0034] See Figure 4 and Figure 5 The heat absorber tube 2 extends along an arc shape on the outer surface of the tube body 1, forming multiple C-shaped notches 24. Multiple fins 11 are located within the notches 24, with each fin corresponding to one of the notches 24. The C-shaped notches 24 formed by the heat absorber tube 2 facilitate the heat absorber tube 2 surrounding the fins 11, thereby increasing the contact area between the heat absorber tube 2 and the fins 11. The fins 11 are elongated, with both sides in the width direction abutting against the heat absorber tube 2. At least three sides of the fins 11 are surrounded by the heat absorber tube 2. The length direction of the fins 11 is perpendicular to the axial direction of the tube body 1, and the fins 11 are spaced apart along the axial direction of the tube body 1. This allows for the placement of more fins 11 on the tube body 1, and increases the contact area between the heat absorber tube 2 and the fins 11, thereby improving the thermal conductivity of the tube body 1 and the heat absorber tube 2.

[0035] See Figure 2 and Figure 5 There are four heat absorber tubes 2, which are distributed sequentially along the circumference of the tube body 1. The four heat absorber tubes 2 are independent of each other, and the coolant in two adjacent heat absorber tubes 2 does not flow between them. The heat absorber tubes 2 are symmetrically arranged about the central axis of the tube body 1. By setting four heat absorber tubes 2 around the tube body 1, the heat conduction area of ​​the tube body 1 is increased, thereby absorbing heat from the outer surface of the tube body 1 more comprehensively.

[0036] See Figure 1 and Figure 2 The heat insulation component 3 includes a heat insulation layer 31 and a heat insulation cover 32. The heat insulation layer 31 is tubular and is made of heat insulation cotton. The heat insulation layer 31 is fitted over the tube body 1 and the heat absorption tube 2. The heat insulation layer 31 can prevent the heat from the tube body 1 and the heat absorption tube 2 from spreading to the components near the exhaust pipe. The heat insulation cover 32 is connected to the heat insulation layer 31. The heat insulation cover 32 is used to fix the heat insulation layer 31 to the outside of the heat absorption tube 2 and prevent the heat insulation layer 31 from detaching from the tube body 1.

[0037] See Figure 1 and Figure 2 In some embodiments, the heat insulation cover 32 is tubular and is fitted over the heat insulation layer 31. The heat insulation cover 32 includes an upper half and a lower half, both of which are semi-circular tubes and are fixed together by bolts. Each of the opposite ends of the heat insulation cover 32 is provided with an end edge 33, which is located on the axial direction of the heat insulation layer 31 and abuts against the heat insulation layer 31. The end edge 33 can limit the heat insulation layer 31 and prevent the heat insulation layer 31 from detaching from the tube body 1 along the axial direction of the tube body 1.

[0038] See Figure 1-4 The tube body 1 has a limiting part 12 at each of its opposite ends, located on the side of the tube body 1. The heat absorption tube 2 includes a main body 21, an outlet tube 22, and an inlet tube 23, with the main body 21 located between the two limiting parts 12. The limiting parts 12 can limit the main body 21, preventing it from moving along the axial direction of the tube body 1, thus making the heat absorption tube 2 more stable. One end of the outlet tube 22 is connected to the main body 21, and the outlet tube 22 crosses the limiting part 12, with the outlet located at the outlet tube 22; one end of the inlet tube 23 is connected to the main body 21, and the inlet tube 23 crosses the limiting part 12, with the inlet located at the inlet tube 23.

[0039] See Figure 1 and Figure 2In some embodiments, the heat insulation layer 31 is located between the inlet pipe 23 and the outlet pipe 22. The inlet pipe 23 and the outlet pipe 22 can limit the heat insulation layer 31 to prevent it from detaching from the pipe body 1 along its axial direction. The heat insulation cover 32, the inlet pipe 23, and the outlet pipe 22 surround the heat insulation layer 31, wherein the heat insulation layer 31 has a pair of clearance openings for the inlet pipe 23 and the outlet pipe 22 to pass through. By surrounding the heat insulation layer 31 with the heat insulation cover 32, the inlet pipe 23, and the outlet pipe 22, the heat insulation layer 31 is firmly fixed between the heat insulation cover 32 and the heat absorption pipe 2.

[0040] Corresponding to the aforementioned application function implementation device embodiments, this application also provides an engine bench exhaust pipe cooling system and corresponding embodiments.

[0041] See Figure 1 and Figure 2 The engine bench exhaust pipe cooling system includes a cooling sleeve, an engine, a temperature sensor, and a water-cooling device. The engine has an exhaust pipe that generates a significant amount of heat during operation. The exhaust gases are collected and treated by a centralized exhaust system. The temperature sensor is connected to the exhaust pipe and is used to detect its temperature. The water-cooling device is connected to a heat absorber pipe 2 and exchanges coolant with it. The cooling sleeve is fitted over the exhaust pipe and conducts heat through it. After absorbing heat from the exhaust pipe, the coolant flows back to the water-cooling device from its outlet. An electrically controlled valve is installed on the pipe connecting the water-cooling device and the heat absorber pipe 2 to control the flow rate of the coolant. By placing the heat absorption tube 2 on the outer surface of the tube body 1, the heat absorption tube 2 extends along the bow shape on the outer surface of the tube body 1, thereby increasing the contact area between the heat absorption tube 2 and the tube body 1 and improving the heat conduction efficiency of the heat absorption tube 2 to the tube body 1. Even with a relatively short exhaust pipe, the heat dissipation requirements of the exhaust pipe can still be met. At the same time, a heat insulation component 3 is set outside the heat absorption tube 2 to prevent heat diffusion while cooling down.

[0042] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0043] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A heat dissipation sleeve, characterized in that, include: tube body; A heat-absorbing tube is attached to the outer surface of the tube body and extends in an arc shape. The heat-absorbing tube conducts heat with the tube body. An inlet and an outlet are respectively opened at opposite ends of the heat-absorbing tube. A liquid cavity is opened inside the heat-absorbing tube and is connected to the inlet and the outlet respectively. A heat insulation component is fitted over the tube body and the heat absorption tube.

2. The heat dissipation sleeve according to claim 1, characterized in that: The tube body is provided with fins, the fins are located on the outer surface of the tube body, the heat absorption tube abuts against the fins, and the heat absorption tube conducts heat with the fins.

3. The heat dissipation sleeve according to claim 2, characterized in that: The heat absorption tube extends in an arc shape and forms multiple C-shaped notches. There are multiple fins, and the fins are located in the notches. Each fin corresponds to one of the notches.

4. The heat dissipation sleeve according to claim 3, characterized in that: The fins are elongated strips, and the two sides of the fins in the width direction respectively abut against the heat absorption tube.

5. The heat dissipation sleeve according to claim 1, characterized in that: There are four heat-absorbing tubes, which are distributed sequentially along the circumference of the tube body and are symmetrical about the central axis of the tube body.

6. The heat dissipation sleeve according to claim 1, characterized in that: The heat insulation component includes a heat insulation layer and a heat insulation cover. The heat insulation layer is tubular and is sleeved over the tube body and the heat absorption tube. The heat insulation cover is connected to the heat insulation layer and is used to fix the heat insulation layer to the outside of the heat absorption tube.

7. The heat dissipation sleeve according to claim 6, characterized in that: The heat insulation cover is tubular and is fitted over the heat insulation layer. Each end of the heat insulation cover has an end edge located on the axial direction of the heat insulation layer and abutting against the heat insulation layer.

8. The heat dissipation sleeve according to claim 6, characterized in that: The tube body has a limiting part at each of its opposite ends, and the limiting part is located on the side of the tube body. The heat absorption tube includes a main body, an outlet tube, and an inlet tube. The main body is located between the two limiting parts. One end of the outlet tube is connected to the main body and crosses the limiting part. The outlet is located in the outlet tube. One end of the inlet tube is connected to the main body and crosses the limiting part. The inlet is located in the inlet tube.

9. The heat dissipation sleeve according to claim 8, characterized in that: The heat insulation layer is located between the liquid inlet pipe and the liquid outlet pipe, and the heat insulation cover, the liquid inlet pipe and the liquid outlet pipe surround the heat insulation layer.

10. An engine bench exhaust pipe cooling system, characterized in that, The device includes a heat dissipation sleeve, an engine, a temperature sensor, and a water-cooling device as described in any one of claims 1 to 9. The engine is provided with an exhaust pipe, the temperature sensor is connected to the exhaust pipe, the water-cooling device is connected to the heat absorption pipe, the water-cooling device is used to exchange coolant with the heat absorption pipe, and the heat dissipation sleeve is fitted over the exhaust pipe and conducts heat with the exhaust pipe.

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