A lamp heat dissipation structure for ultraviolet light curing pipe repair

Abstract

This utility model discloses a heat dissipation structure for UV-curable pipe repair lamps, including a transparent tube body. Multiple sets of UV lamp assemblies are equidistantly installed along the circumference of the inner wall of the transparent tube body. Each UV lamp assembly includes a UV lamp, with both ends of the UV lamp fixedly connected to the transparent tube body via mounting rings. The emitting surface of the UV lamp is in close contact with the inner wall of the transparent tube body, and a liquid-cooled heat spreader is provided on the back of the UV lamp. A miniature liquid-cooled pump is provided at one end of the liquid-cooled heat spreader, which is connected to a liquid-cooled flow channel inside the heat spreader. This utility model employs a liquid cooling method combining a liquid-cooled heat spreader and a miniature liquid-cooled pump. The miniature liquid-cooled pump drives the coolant to circulate within the flow channel, quickly removing the heat generated by the lamp. Simultaneously, the liquid-cooled heat spreader is made of aluminum alloy and has heat dissipation fins on its surface, increasing the heat dissipation area and further improving heat dissipation efficiency. This effectively prevents heat accumulation, reduces the lamp temperature, and extends its service life.

Description

Technical Field

[0001] This utility model relates to the field of ultraviolet light curing and repair technology, and in particular to a heat dissipation structure for a lamp tube used in ultraviolet light curing and repairing pipelines. Background Technology

[0002] With the rapid development of urban construction, the number of underground pipelines is constantly increasing. As can be seen from pipeline construction and market testing, most underground pipelines in cities often suffer from structural and functional damage. The main method for repairing underground pipelines is trenchless repair, and the core of trenchless repair is ultraviolet light curing repair.

[0003] The specific operation process of UV-cured lining repair technology is as follows: First, fiberglass is braided into a flexible tube and impregnated with UV-cured resin. Then, the flexible tube is pulled into the pipe to be repaired, followed by the injection of compressed air to fully expand the tube and ensure it adheres tightly to the inner wall of the old pipe. At this point, using the original pipe as the outer mold and the inner membrane of the flexible tube as the inner mold, the resin is cured inside the pipe under UV light, ultimately forming a new high-strength composite lining resin pipe, achieving trenchless repair of the entire pipe section. However, during the UV curing repair process, the UV lamp generates a large amount of heat during operation. Currently, air cooling is commonly used to dissipate heat from the UV lamp, but this method is inefficient and easily causes heat to accumulate at the UV lamp, leading to excessively high lamp temperatures and significantly shortening the lamp's lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a heat dissipation structure for a lamp tube used in ultraviolet curing pipe repair, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A heat dissipation structure for UV-curable pipe repair lamps includes a transparent tube body. Multiple sets of UV lamp assemblies are equidistantly installed along the circumference of the inner wall of the transparent tube body to provide UV irradiation for pipe repair. Each UV lamp assembly includes a UV lamp tube. Mounting rings are fixedly connected to both ends of the transparent tube body, with the UV lamp tubes fixedly connected to the mounting rings at both ends. The emitting surface of the UV lamp tube is in close contact with the inner wall of the transparent tube body, and a liquid-cooled heat spreader is provided on the back of the UV lamp tube. The liquid-cooled heat spreader is tightly fitted to the back of the UV lamp tube, and a liquid-cooled flow channel is formed inside the liquid-cooled heat spreader. A miniature liquid-cooled pump is provided at one end of the liquid-cooled heat spreader, with its inlet and outlet connected to the liquid-cooled flow channel inside the liquid-cooled heat spreader, forming a closed loop to drive coolant to circulate within the liquid-cooled flow channel for cooling circulation.

[0006] Preferably, the liquid-cooled heat spreader is made of aluminum alloy, and the surface of the liquid-cooled heat spreader is provided with heat dissipation fins to increase the heat dissipation area.

[0007] Preferably, the transparent tube is provided with a first moving component and a second moving component at both ends, wherein the first moving component and the second moving component have the same structure and are used to drive the transparent tube to move along the axial direction of the pipe.

[0008] Preferably, the first movable component includes a fixed base, wherein a plurality of spring supports are provided at equal intervals along the circumference of the outer wall of the fixed base, and each of the spring supports is respectively equipped with a roller.

[0009] Preferably, one end of the transparent tube is provided with a sealing cap, wherein the outer wall of the sealing cap is fixedly connected to the first movable component through a first connecting post.

[0010] Preferably, a brushless centrifugal fan is installed in the middle of the sealing cover, wherein the brushless centrifugal fan is connected to the inner cavity of the transparent tube for dynamic heat dissipation.

[0011] Preferably, the transparent tube body is provided with a guide hood at the end away from the sealing cover, wherein the outer wall of the guide hood is fixedly connected to the second moving component through a second connecting column.

[0012] Preferably, the air guide shroud has ventilation holes that communicate with the inner cavity of the transparent tube.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention employs a liquid cooling method combining a liquid-cooled heat spreader and a micro liquid-cooled pump. The liquid-cooled heat spreader is tightly attached to the back of the ultraviolet lamp tube and has internal liquid cooling channels. The micro liquid-cooled pump drives the coolant to circulate within the channels, quickly removing the heat generated by the lamp tube. Simultaneously, the liquid-cooled heat spreader is made of aluminum alloy and has heat dissipation fins on its surface, increasing the heat dissipation area and further improving heat dissipation efficiency. This effectively prevents heat accumulation, reduces lamp tube temperature, and extends its service life. Furthermore, a brushless centrifugal fan is installed at one end of the transparent tube, connected to the inner cavity for dynamic heat dissipation. This works in conjunction with the liquid cooling method to remove heat through different pathways, enhancing the overall heat dissipation effect. A guide shroud and ventilation guide plate are installed at the other end of the transparent tube, connected to the inner cavity, which helps guide airflow, optimizes air circulation, and makes heat dissipation smoother and more efficient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the transparent tube body connected to the sealing cap and the air guide shroud of this utility model; Figure 3 This is a schematic diagram of the internal structure of the transparent tube of this utility model; Figure 4 This is a structural schematic diagram of the ultraviolet lamp tube assembly of this utility model.

[0015] The components include: 1. Transparent tube body; 2. Ultraviolet lamp tube assembly; 201. Ultraviolet lamp tube; 202. Liquid-cooled heat spreader; 203. Miniature liquid-cooled pump; 204. Heat dissipation fins; 3. Mounting ring; 4. Liquid-cooled flow channel; 5. First moving component; 501. Fixed base; 502. Spring support; 503. Roller; 6. Second moving component; 7. Sealing cover; 8. First connecting post; 9. Brushless centrifugal fan; 10. Air guide shroud; 11. Second connecting post; 12. Ventilation guide hole. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Please refer to the following: Figures 1 to 4 To achieve the above objectives, this utility model provides the following technical solution: A heat dissipation structure for UV-cured pipe repair lamps includes a transparent tube body 1. Multiple sets of UV lamp assemblies 2 are equidistantly installed along the circumference of the inner wall of the transparent tube body 1. The transparent tube body 1 provides installation space and protection for the UV lamp assemblies 2. The transparent tube body 1 is made of polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), low-density polyethylene (LDPE), acrylic glass (PMMA), or polypropylene (PP). Its transparency allows UV light to pass through, ensuring that the UV light can irradiate the inside of the pipe to be repaired, achieving resin curing. The UV lamp assembly 2 includes a UV lamp 201. Mounting rings 3 are fixedly connected to both ends of the transparent tube body 1, with both ends of the UV lamp 201 fixedly connected to the mounting rings 3. This ensures the stable installation of the UV lamp 201 within the transparent tube body 1, preventing it from shaking or shifting during operation. The emitting surface of the UV lamp 201 is in close contact with the inner wall of the transparent tube body 1. The back of the ultraviolet lamp tube 201 is equipped with a liquid-cooled heat spreader 202. The liquid-cooled heat spreader 202 is tightly attached to the back of the ultraviolet lamp tube 201, and a liquid-cooled flow channel 4 is opened inside the liquid-cooled heat spreader 202. The liquid-cooled heat spreader 202 can quickly absorb the heat generated by the ultraviolet lamp tube 201 during operation and evenly distribute the heat to the entire surface of the liquid-cooled heat spreader 202 to avoid local overheating. The liquid-cooled flow channel 4 opened inside the liquid-cooled heat spreader 202 provides a channel for the flow of coolant. Through the circulation of coolant, the absorbed heat is carried away from the liquid-cooled heat spreader 202, realizing the effective transfer and dissipation of heat. A miniature liquid-cooled pump 203 is provided at one end of the liquid-cooled heat spreader 202. The inlet and outlet of the miniature liquid-cooled pump 203 are respectively connected to the liquid-cooled flow channel 4 inside the liquid-cooled heat spreader 202 to form a closed loop, so as to drive the coolant to circulate in the liquid-cooled flow channel 4 for cooling circulation and maintaining a good heat dissipation effect.

[0018] During pipeline repair, the power is turned on, and the ultraviolet lamp 201 starts working. The luminescent material inside is excited by the electric field to generate ultraviolet light. Because the luminescent surface of the ultraviolet lamp 201 is in close contact with the inner wall of the transparent tube 1, the ultraviolet light can penetrate the transparent tube 1 and irradiate the inside of the pipeline to be repaired. This causes the photocuring resin impregnated in the glass fiber flexible tube to absorb the ultraviolet light energy, triggering the decomposition of the photoinitiator in the resin to generate free radicals, which in turn triggers the polymerization reaction of the resin, causing it to gradually cure and ultimately form a new composite lining resin pipe that is tightly bonded to the inner wall of the old pipe. During operation, the ultraviolet lamp 201 generates a large amount of heat, which is first absorbed by the liquid-cooled heat spreader 202. At this time, the micro liquid... The cold pump 203 starts operating, driving the coolant to circulate in the liquid cooling channels 4 inside the liquid cooling heat spreader 202. As the coolant flows through the liquid cooling heat spreader 202, it absorbs heat from the liquid cooling heat spreader 202, causing its temperature to rise. With the flow of the coolant, the high-temperature coolant is carried away from the liquid cooling heat spreader 202 and flows towards the heat dissipation area. At the same time, the low-temperature coolant flows back from the heat dissipation area and re-enters the liquid cooling channels 4 of the liquid cooling heat spreader 202 to continue absorbing heat. This forms a continuous cooling cycle, constantly removing the heat generated by the ultraviolet lamp tube 201, ensuring that the ultraviolet lamp tube 201 is always within a suitable operating temperature range, and avoiding the impact on its performance and service life due to excessive temperature.

[0019] In a preferred embodiment, this utility model can be further configured as follows: Figure 3 , Figure 4As shown; the liquid-cooled heat spreader 202 is made of aluminum alloy, which has good thermal conductivity and can quickly conduct heat away from the contact area, thus absorbing and dispersing the heat generated by the ultraviolet lamp 201 in a timely manner; the surface of the liquid-cooled heat spreader 202 is provided with heat dissipation fins 204 to increase the heat dissipation area; the liquid-cooled heat spreader 202 is tightly attached to the back of the ultraviolet lamp 201. When the ultraviolet lamp 201 is working, it generates a large amount of heat. The high thermal conductivity of the aluminum alloy is used to quickly conduct the heat from the contact surface between the ultraviolet lamp 201 and the liquid-cooled heat spreader 202 to the entire interior of the liquid-cooled heat spreader 202; the coolant inside the liquid-cooled heat spreader 202 circulates in the flow channel driven by the micro liquid cooling pump 203, and the liquid-cooled heat spreader 202... The absorbed heat is transferred to the coolant flowing in the channel, raising the coolant temperature. Simultaneously, the heat dissipation fins 204 exchange heat with the air. When air flows through the heat dissipation fins 204, the heat on the surface of the fins 204 is transferred to the air molecules in contact with the surface of the fins 204 through heat conduction. Because the shape and arrangement of the heat dissipation fins 204 are conducive to airflow, a good convection environment is formed, improving heat dissipation efficiency and lowering the coolant temperature. The cooled coolant, driven by the micro liquid-cooled pump 203, flows back to the channel of the liquid-cooled heat spreader 202 to continue absorbing heat. This cycle repeats continuously, dissipating the heat generated by the ultraviolet lamp tube 201 and ensuring that the ultraviolet lamp tube 201 operates at a suitable temperature.

[0020] In a preferred embodiment, this utility model can be further configured as follows: Figure 1 As shown; the transparent tube 1 has a first moving component 5 and a second moving component 6 at both ends, wherein the first moving component 5 and the second moving component 6 have the same structure; the first moving component 5 and the second moving component 6 are symmetrically installed at both ends of the transparent tube 1 to drive the transparent tube 1 to move smoothly and axially within the pipe, while adapting to possible unevenness in the inner wall of the pipe, ensuring that there will be no jamming or deviation from the axial direction during the movement; since the first moving component 5 and the second moving component 6 have the same structure, only the structure of the first moving component 5 will be described in detail in this embodiment; the first moving component 5 includes a fixed base. 501, wherein the outer wall of the fixed base 501 is provided with a plurality of spring supports 502 at equal intervals along its circumference, and each spring support 502 is respectively equipped with a roller 503; when the first moving component 5 and the second moving component 6 are respectively installed at both ends of the transparent tube 1 and placed in the pipe, the fixed base 501 bears the weight of the transparent tube 1 and related components, and the spring supports 502 evenly distribute this part of the weight to each roller 503, so that the roller 503 is in close contact with the inner wall of the pipe, forming a stable support system. This support method can ensure that the transparent tube 1 maintains its axial position in the pipe and avoids tilting or shaking.

[0021] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 As shown; a sealing cap 7 is provided at one end of the transparent tube 1, wherein the outer wall of the sealing cap 7 is fixedly connected to the first moving component 5 through the first connecting post 8; a brushless centrifugal fan 9 is installed in the middle of the sealing cap 7, wherein the brushless centrifugal fan 9 communicates with the inner cavity of the transparent tube 1 to dynamically dissipate heat; the sealing cap 7 is installed at one end of the transparent tube 1, which serves to seal the inner cavity of the transparent tube 1, preventing external impurities, moisture, etc. from entering the tube, and protecting key components such as the ultraviolet lamp tube assembly 2 installed inside from damage; at the same time, the sealing cap 7, as a connecting component, is fixedly connected to the first moving component 5 through the first connecting post 8, so that the transparent tube 1 can move along the tube inside the pipe as the first moving component 5 moves. Axial movement completes the position adjustment during pipeline repair; the main function of the brushless centrifugal fan 9 is to generate airflow during operation, and to draw air in from the fan inlet through centrifugal force, then accelerate and change the direction of the airflow, blowing the air from the outlet into the inner cavity of the transparent tube 1. As the airflow flows in the transparent tube 1, it will carry away the heat generated by the ultraviolet lamp 201, realizing dynamic heat dissipation of the inner cavity of the transparent tube 1. As the airflow continues to flow, new cold air continuously enters the inner cavity of the transparent tube 1, expelling the hot air and forming a continuous heat dissipation cycle, thereby effectively reducing the temperature inside the transparent tube 1 and ensuring that the ultraviolet lamp 201 operates within the normal temperature range.

[0022] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 As shown; a guide hood 10 is provided at the end of the transparent tube 1 away from the sealing cover 7, wherein the outer wall of the guide hood 10 is fixedly connected to the second moving component 6 through the second connecting post 11; the guide hood 10 has several ventilation guide holes 12, wherein the ventilation guide holes 12 are connected to the inner cavity of the transparent tube 1; the guide hood 10 is installed at the end of the transparent tube 1 away from the sealing cover 7, and as a key component of the airflow circulation system, its main function is to guide the flow direction of the airflow. The guide hood 10 can collect the hot air flowing out of the inner cavity of the transparent tube 1 and discharge it in an orderly manner, while providing a guiding path for the fresh air entering from the outside, so that the air can circulate more smoothly inside and outside the transparent tube 1; the guide hood 10 can also prevent large particles of impurities from the outside from directly entering the inner cavity of the transparent tube 1, and play a certain role in protecting the internal components; the ventilation guide holes 12 opened on the guide hood 10 serve as important channels for airflow to enter and exit the inner cavity of the transparent tube 1, so that the inner cavity of the transparent tube 1 forms an effective airflow circulation and enhances the heat dissipation effect.

[0023] Working Principle: During pipeline repair, according to the repair needs, the first moving component 5 and the second moving component 6 are controlled to move the transparent tube 1 along the pipeline axis. The rollers 503 on the first moving component 5 and the second moving component 6 roll on the inner wall of the pipeline, moving the transparent tube 1 to the designated position to ensure that ultraviolet light can be evenly irradiated to the area of ​​the pipeline to be repaired. The power is turned on, and the multiple sets of ultraviolet lamp tubes 2 installed on the inner wall of the transparent tube 1 are activated, so that the ultraviolet lamp tubes 201 emit light, providing the required ultraviolet light irradiation for pipeline repair. The ultraviolet lamp tubes 201 generate a lot of heat during operation, which is transferred to the liquid-cooled heat spreader 202 that is in close contact with them. Then, the micro liquid cooling pump 203 is started, driving the coolant to circulate in the liquid cooling channel 4 inside the liquid-cooled heat spreader 202. When the coolant flows through the liquid-cooled heat spreader 202, it absorbs the ultraviolet lamp tubes 201 and transfers the heat to the liquid-cooled heat spreader 202. The heat from the 02 causes the coolant temperature to rise. The heated coolant continues to flow in a closed loop. When it flows through a relatively low-temperature area in the liquid-cooled heat spreader 202 or a part that has a certain heat exchange with the external environment, the coolant releases heat and its temperature drops. Then it flows back to the area near the ultraviolet lamp 201 to absorb heat. This cycle repeats to achieve continuous heat dissipation for the ultraviolet lamp 201. At the same time, the brushless centrifugal fan 9 in the middle of the sealing cover 7 is activated. The airflow enters from the outside through the air inlet of the brushless centrifugal fan 9, and after acceleration, it is blown into the inner cavity of the transparent tube 1 from the air outlet. The airflow entering the inner cavity of the transparent tube 1 comes into contact with components such as the ultraviolet lamp 201 and the liquid-cooled heat spreader 202. The heat is carried away from these components through heat conduction and convection. The hot airflow flows in the inner cavity of the transparent tube 1 and is finally discharged from the outside of the transparent tube 1 through the ventilation guide hole 12 on the guide shroud 10 at the other end of the transparent tube 1.

[0024] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A heat dissipation structure for a UV-curable pipe repair lamp, characterized in that, The system includes a transparent tube (1), on which multiple sets of ultraviolet lamp tube assemblies (2) are equidistantly installed along the circumference of the inner wall of the transparent tube (1) to provide ultraviolet light irradiation for pipe repair; the ultraviolet lamp tube assembly (2) includes an ultraviolet lamp tube (201), and mounting rings (3) are fixedly connected to both ends of the transparent tube (1), wherein both ends of the ultraviolet lamp tube (201) are fixedly connected to the mounting rings (3); the emitting surface of the ultraviolet lamp tube (201) is in close contact with the inner wall of the transparent tube (1), wherein the back of the ultraviolet lamp tube (201) is... A liquid-cooled heat spreader (202) is provided; the liquid-cooled heat spreader (202) is closely attached to the back of the ultraviolet lamp tube (201), and a liquid-cooled flow channel (4) is provided inside the liquid-cooled heat spreader (202); a miniature liquid-cooled pump (203) is provided at one end of the liquid-cooled heat spreader (202), wherein the inlet and outlet of the miniature liquid-cooled pump (203) are respectively connected to the liquid-cooled flow channel (4) inside the liquid-cooled heat spreader (202) to form a closed loop, so as to drive the coolant to circulate in the liquid-cooled flow channel (4) for cooling circulation.

2. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 1, characterized in that, The liquid-cooled heat spreader (202) is made of aluminum alloy, and heat dissipation fins (204) are provided on the surface of the liquid-cooled heat spreader (202).

3. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 1, characterized in that, The transparent tube (1) is provided with a first moving component (5) and a second moving component (6) at both ends, wherein the first moving component (5) and the second moving component (6) have the same structure and are used to drive the transparent tube (1) to move along the pipe axis.

4. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 3, characterized in that, The first moving component (5) includes a fixed base (501), wherein a plurality of spring supports (502) are provided at equal intervals along the circumference of the outer wall of the fixed base (501), and each of the spring supports (502) is respectively equipped with a roller (503).

5. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 3, characterized in that, The transparent tube (1) is provided with a sealing cap (7) at one end, wherein the outer wall of the sealing cap (7) is fixedly connected to the first moving component (5) through the first connecting post (8).

6. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 5, characterized in that, A brushless centrifugal fan (9) is installed in the middle of the sealing cover (7), wherein the brushless centrifugal fan (9) is connected to the inner cavity of the transparent tube (1).

7. The heat dissipation structure for a UV-curing pipe repair lamp tube according to claim 3, characterized in that, The transparent tube (1) is provided with a guide hood (10) at the end away from the sealing cover (7), wherein the outer wall of the guide hood (10) is fixedly connected to the second moving component (6) through the second connecting column (11).

8. The heat dissipation structure for a UV-curable pipe repair lamp according to claim 7, characterized in that, The air guide shroud (10) is provided with a ventilation guide hole (12), wherein the ventilation guide hole (12) is connected to the inner cavity of the transparent tube (1).

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