Lighting device utilizing waste heat of exhaust gas of marine main engine

Abstract

The invention belongs to the technical field of waste gas waste heat recovery, and discloses a lighting device utilizing waste gas waste heat of a marine main engine, which comprises a heat exchange box, and the heat exchange box is further connected with a steam box, a steam generator and a lighting lamp in sequence; the heat exchange box comprises a heat conduction ring, a heat exchange water pipe wound and wrapped on the outer side of the heat conduction ring, a heat transfer ring, an air inlet formed in the two sides of the heat exchange box and a detachable air outlet. The terminal of the heat exchange water pipe extends out of the outer wall of the heat exchange box and is connected with the steam box through a connector; the whole heat conduction ring is cylindrical, and the section is annular; the heat transfer ring is formed by splicing two semi-cylindrical sheets, the sections of the two semi-cylindrical sheets are semicircular, and a plurality of groups of heat absorption fins are mounted on the inner wall of the heat transfer ring; the heat absorption fins are circular plates with notches. By adopting the waste gas contact end and heat exchange pipe separation structure, the heat exchange pipe is not in direct contact with waste gas, the heat exchange box does not need to be separated from the whole waste gas waste heat utilization system, the maintenance time is shortened, and maintenance is easy and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery of exhaust gas, and particularly to a lighting device that utilizes the waste heat of a ship's main engine exhaust gas. Background Art

[0002] The principle of a ship's main engine exhaust gas waste heat lighting device is mainly based on waste heat recovery technology. It uses the waste heat generated during the operation of the ship's main engine to generate electrical energy, and then supplies power to the lighting device. In this way, the waste heat of the exhaust gas that would otherwise be dissipated into the atmosphere can be effectively utilized, converted into electrical energy, and used as the energy source for the ship's lighting system, thereby reducing energy waste, lowering operating costs, and reducing environmental pollution.

[0003] Chinese invention patent: Publication number "CN109595044A", titled "A Ship's Main Engine Exhaust Gas Waste Heat Lighting Device", discloses a ship's main engine exhaust gas waste heat lighting device, including a gas collection box and a steam box. The upper and lower ends of the gas collection box are respectively provided with an air inlet and an air outlet. The gas collection box is internally provided with heat absorption tubes. There is a steam hole on the upper end wall of the steam box, and a drain pipe is provided at the bottom. The inlet and outlet of the heat absorption tubes are both outside the gas collection box. The outlet end of the heat absorption tube is connected to a liquid outlet pipe, which is connected to the steam box and the liquid outlet end is arranged above the steam box. There is a pipe head at the liquid outlet, and round holes are provided on the pipe head. A net plate connected to the top wall of the steam box is arranged in front of the pipe head. This technical solution uses a boiling cooling method to vaporize and absorb heat of the cooling water, facilitating waste heat recovery while treating the exhaust gas generated by the diesel engine.

[0004] The heat absorption tubes, i.e., the heat exchange structure, are arranged inside the above-mentioned gas collection box. During heat exchange, the exhaust gas directly transfers heat to the heat absorption tubes, and impurities in the exhaust gas will also adhere to the directly contacting heat transfer inner wall, thereby affecting the heat transfer efficiency. Therefore, regular maintenance and cleaning are required. When cleaning the traditional heat exchange box, it is necessary to disassemble the air inlet end, air outlet end, and connection ends of the heat exchange tubes of the heat exchange box. When the disassembly and assembly take a long time, it affects the normal operation of the ship's lighting device. Moreover, the fins of the traditional heat exchange box cannot be disassembled, resulting in the inability to clean the exhaust gas attachments thoroughly. When cleaning, after the heat exchange box cover is opened, it is difficult to clean the deeper interior of the integral heat exchange box properly. When the existing detachable structure is applied to heat transfer, its heat conduction efficiency needs to be considered. There are problems such as high production costs, difficult installation, and easy damage due to direct connection through precise fitting. Summary of the Invention

[0005] In order to solve the problem of cumbersome maintenance of the heat exchange structure between the exhaust gas and the lighting device in the above-mentioned existing technology, the present invention proposes a lighting device that utilizes the waste heat of a ship's main engine exhaust gas.

[0006] The present invention is realized through the following technical solutions: It includes a heat exchange box connected to the exhaust gas end of a ship. The heat exchange box is also sequentially connected to a steam box, a steam generator, and a lighting lamp. The heat exchange box includes a heat conduction ring arranged on the inner wall, a heat exchange water pipe wound and wrapped outside the heat conduction ring, a heat transfer ring placed on the inner wall of the heat conduction ring, an air inlet arranged on one side of the heat exchange box, and a detachable air outlet arranged on the side far from the air inlet. The terminal of the heat exchange water pipe extends out of the outer wall of the heat exchange box and is connected to the steam box through a connection port. The heat conduction ring is overall cylindrical with an annular cross-section. The heat transfer ring is formed by splicing two semi-cylindrical pieces. The cross-sections of the two semi-cylindrical pieces are semi-annular. Multiple groups of heat absorption fins are installed on the inner wall of the heat transfer ring. The heat absorption fins are circular plates with notches.

[0007] As a further preference, the heat transfer ring is spliced and installed through fasteners.

[0008] As a further preference, multiple groups of grooves are arranged on the inner wall of one side of the heat transfer ring. The number of grooves is the same as the number of heat absorption fins, and the grooves are fitted with the heat absorption fins.

[0009] As a further preference, a rotation limiting ring is installed on the side of the air outlet close to the heat exchange box. An opening is arranged on the side of the rotation limiting ring close to the heat exchange box. The opening on the rotation limiting ring is connected to the fastener of the heat transfer ring in a matching manner. A driving motor is arranged at the end of the air outlet far from the heat exchange box, and the output end of the driving motor is connected to the rotation limiting ring.

[0010] As a further preference, an embedding ring is arranged on the inner side of the rotation limiting ring, and the outer wall of the embedding ring is attached to the inner wall of the heat transfer ring.

[0011] As a further preference, a heat conduction fitting groove is arranged on the outer wall of the heat transfer ring along the axial direction. Sliding grooves are arranged on the inner side walls at both ends in the length direction of the heat conduction fitting groove. Sliders are installed in the sliding grooves. A scroll is fixedly connected between the two sliders. The other end of one slider is provided with a pressing block, and the pressing block extends out of the outer end in the axial direction of the heat transfer ring. A transmission belt is installed on the outer wall of the scroll, and a transmission wheel is sleeved on the scroll. The outer ring of the transmission wheel is attached to the heat conduction ring. A pushing plate and a guiding plate are installed on the inner wall of the heat conduction fitting groove, and the outer wall of the pushing plate is connected to the transmission belt.

[0012] As a further preference, heat conductive silicone grease is filled between the pushing plate and the guiding plate, and a diversion groove is arranged in the guiding plate.

[0013] As a further preference, the sliders and the sliding grooves have an inclined angle towards the heat conduction ring.

[0014] As a further preference, a cleaning groove is formed in the outer wall of the heat transfer ring along the axial direction. A scraping plate is installed on the inner wall of the cleaning groove. A support plate is installed on one side of the scraping plate, and a reverse rotation prevention plate is movably installed on one side of the scraping plate.

[0015] As a further preference, the cleaning groove is located at the front end in the rotation direction of the heat transfer ring of the heat conduction fitting groove. The scraping plate protrudes and fits with the inner wall of the heat conduction ring. The support plate is located on one side in the rotation direction of the reverse rotation prevention plate. A spring is installed on the outer wall of one side of the reverse rotation prevention plate, and the reverse rotation prevention plate is inclined on the scraping plate towards the silicone grease application end.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention adopts a structure in which the exhaust gas contact end and the heat exchange tube are separated, so that the heat exchange tube does not directly contact the exhaust gas. During maintenance, only the air outlet end needs to be disassembled, and the heat transfer ring in contact with the exhaust gas is taken out for maintenance and cleaning. There is no need to disconnect the heat exchange box from the entire exhaust gas waste heat utilization system, reducing the maintenance time.

[0018] 3. The heat exchange tube of the present invention is completely wrapped by the heat conduction ring, improving the heat receiving effect of the heat exchange tube. Moreover, the heat exchange tube and the heat conduction tube do not contact the exhaust gas at all, so no corrosion occurs, greatly improving the service life of the heat exchange water pipe and the heat conduction ring. The heat absorption fin and the heat transfer ring have a simple structure, low manufacturing and assembly costs, and reduce the subsequent replacement cost.

[0019] 3. The present invention can assist in installing the heat transfer ring through the self - contained stepping motor. When the heat transfer ring and the heat conduction ring are installed, silicone grease can be automatically applied at the gap, ensuring the heat transfer efficiency between the separated heat transfer ring and the heat conduction ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall structural block diagram of the lighting system of the present invention.

[0021] Figure 2 It is the partially enlarged schematic view of the structure of the heat exchange box of the present invention.

[0022] Figure 3 It is the partially enlarged schematic view of the structure of the heat exchange water pipe of the present invention.

[0023] Figure 4 It is the overall structural schematic view of the heat transfer ring of the present invention.

[0024] Figure 5 It is the schematic view of the air outlet of the lighting device of the present invention.

[0025] Figure 6 It is the partially enlarged schematic view of the heat transfer ring of the present invention.

[0026] Figure 7 For Figure 6Partial enlarged schematic diagram of the structure at A in [Chinese context].

[0027] Figure 8 Schematic cross-sectional view of the heat transfer loop of the present invention.

[0028] Labels in the figure:

[0029] 1. Lighting lamp; 2. Steam power generation component; 3. Steam box; 4. Heat exchange box; 41. Heat conduction ring; 411. Heat exchange water pipe; 412. Connection port; 42. Heat transfer ring; 421. Heat absorption fin; 422. Fastener; 43. Air outlet; 431. Rotation limiting ring; 432. Driving motor; 433. Embedded ring; 44. Heat conduction fitting groove; 441. Sliding groove; 442. Slide block; 4421. Pressing block; 443. Reel; 444. Transmission belt; 445. Transmission wheel; 446. Pushing plate; 447. Guiding plate; 45. Cleaning groove; 451. Scraper; 452. Support plate; 453. Anti-reverse plate; 46. Air inlet. Detailed implementation method

[0030] The advantages and features of the present invention will be illustrated and explained through the non-restrictive description of the following preferred embodiments, which are given only as examples with reference to the accompanying drawings.

[0031] Embodiment 1

[0032] As Figures 1 to 6 shown, this is the first embodiment of the present invention. This embodiment provides a lighting device that utilizes the waste heat of the ship's main engine, including a lighting lamp 1, a steam power generation component 2, a steam box 3, and a heat exchange box 4. The heat exchange box 4 is connected to the ship's exhaust gas end, the heat exchange box 4 is connected to the steam box 3, the steam box 3 is connected to the steam power generation component 2, the steam power generation component 2 is connected to the lighting lamp 1. The heat exchange box 4 uses the waste heat of the exhaust gas to heat the circulating water, and the circulating water flows to the steam box 3. The water vapor in the steam box 3 enters the steam power generation component 2, thereby completing power generation. The electric energy generated by the steam power generation component 2 is stored in the energy storage device and is connected to the lighting lamp 1, thus completing the utilization of waste heat from the exhaust gas.

[0033] Specifically, the heat exchange box 4 includes a heat conduction ring 41, a heat transfer ring 42, an air outlet 43 and an air inlet 46. A heat conduction ring 41 is installed on the inner wall of the heat exchange box 4. The heat conduction ring 41 is generally cylindrical in shape and has an annular cross-section. A heat exchange water pipe 411 is wound and wrapped around the outer side of the heat conduction ring 41. The terminal of the heat exchange water pipe 411 extends out of the outer wall of the heat exchange box 4, and the extended end of the heat exchange water pipe 411 is connected to the steam box 3 through a connection port 412. A spliced heat transfer ring 42 is placed inside the inner wall of the heat conduction ring 41, and a plurality of heat absorption fins 421 are installed on the inner wall of the heat transfer ring 42. The plurality of heat absorption fins 421 are preferably arranged in an array along the axis direction of the heat transfer ring 42. The heat transfer ring 42 is spliced and installed through a fastener 422. The air inlet 46 is connected to one side of the heat exchange box 4 and is used to connect to the exhaust gas outlet of the ship's main engine. The air outlet 43 is arranged on the side of the heat exchange box 4 away from the air inlet 46 and is used to discharge the exhaust gas of the ship's main engine that has undergone heat exchange. A groove is provided on the inner wall of one side of the heat transfer ring 42, and each group of grooves corresponds to the heat absorption fins 421. During splicing, the heat absorption fins 421 can be embedded into the grooves and closely fit with the spliced heat transfer ring 42. The heat absorption fins 421 are circular plates with notches. When the exhaust gas passes through the heat absorption fins 421, it is transferred from the notch to the next heat absorption fin 421, which can effectively reduce the exhaust gas flow rate. The notches of the heat absorption fins 421 are staggered. The high-temperature exhaust gas generated by the ship's main engine enters the interior of the heat exchange box 4 from the air inlet 46. The high-temperature exhaust gas flows between the heat absorption fins 421. The heat absorption fins 421 direct the heat to the heat transfer ring 42 surrounded by the outer circle. There is a small gap between the heat transfer ring 42 and the heat conduction ring 41, and silicone grease is filled in the gap to ensure the heat transfer effect. Moreover, the heat conduction ring 41 is completely wrapped by the heat exchange water pipe 411, so that the heat of the heat conduction ring 41 can evenly heat the heat exchange water pipe 411 and ensure the heating effect of its circulating water.

[0034] Operation process: The exhaust gas passes through the air inlet 46 and enters the interior of the heat exchange box 4. The exhaust gas flows and blows on the upper surface of the heat absorption fins 421. The heat absorption fins 421 direct the heat to the heat transfer ring 42 surrounded by the outer circle. There is a small gap between the heat transfer ring 42 and the heat conduction ring 41, and silicone grease is filled in the gap to ensure the heat transfer effect. Moreover, the heat conduction ring 41 is completely wrapped by the heat exchange water pipe 411, so that the heat of the heat conduction ring 41 can evenly heat the heat exchange water pipe 411 and ensure the heating effect of its circulating water. The heated circulating water flows to the steam box 3. The hot water vapor in the steam box 3 enters the steam power generation component 2, and then power generation is completed. The electric energy generated by the steam power generation component 2 is stored in the energy storage device and is connected to the lighting lamp 1, thereby completing the utilization of the exhaust gas waste heat.

[0035] Embodiment 2

[0036] As Figures 1 to 7As shown, this is the second embodiment of the present invention. The same parts as the first embodiment will not be described again. The difference between this embodiment and the first embodiment is that the air outlet 43 is the exhaust gas outlet end of the heat exchange box 4, and the air outlet 43 is the disassembly and maintenance end of the heat exchange box 4. A rotation limiting ring 431 is installed on one side of the air outlet 43 close to the heat exchange box 4. When the air outlet 43 is connected to the heat exchange box 4, the rotation limiting ring 431 is in driving connection with the heat transfer ring 42. Two groups of openings are provided on one side of the rotation limiting ring 431 close to the heat exchange box 4, and a rotating ring is also installed on the side mirroring the intake end of the rotation limiting ring 431 through a bearing, and openings are also provided for supporting and fixing the heat transfer ring 42. A driving motor 432 is installed on the outer wall of the air outlet 43, and the output end of the driving motor 432 is connected to the rotation limiting ring 431. The driving motor 432 is a stepper motor, and an embedding ring 433 is installed inside the rotation limiting ring 431.

[0037] Specifically, the outer wall of the embedding ring 433 can be fitted with the inner wall of the heat transfer ring 42, and the exhaust gas is transferred from the embedding ring 433 to the inside of the heat transfer ring 42. The driving motor 432 is rotationally drivingly connected to the rotation limiting ring 431 through a transmission mechanism. The opening of the rotation limiting ring 431 is in matching connection with the fastener 422 of the heat transfer ring 42. When connecting, the driving motor 432 drives the rotation limiting ring 431 and the heat transfer ring 42 to rotate, so as to complete the connection between the heat transfer ring 42 and the heat conduction ring 41. At this time, a small gap remains between the heat transfer ring 42 and the heat conduction ring 41 to avoid the direct precise contact between the heat transfer ring 42 and the heat conduction ring 41 causing minute deformations due to thermal expansion or mechanical vibration.

[0038] Such as Figure 6 and Figure 7As shown in the figure, further, a heat conduction fitting groove 44 is axially formed on the outer wall of the heat transfer ring 42. Inner side walls at both ends in the length direction of the heat conduction fitting groove 44 are respectively provided with sliding grooves 441. A sliding block 442 is installed in the sliding groove 441. A reel 443 is fixedly connected between the two sliding blocks 442. The other end of one of the sliding blocks 442 is provided with a pressing block 4421, and the pressing block 4421 extends out of the outer end in the axial direction of the heat transfer ring 42. A transmission belt 444 is installed on the outer wall of the reel 443, and a transmission wheel 445 is sleeved on the reel 443. The outer ring of the transmission wheel 445 is in contact with the heat conduction ring 41. A pushing plate 446 is installed on the inner wall of the heat conduction fitting groove 44, and the outer wall of the pushing plate 446 is connected to the transmission belt 444. An introducing plate 447 is installed on the inner wall of the heat conduction fitting groove 44. When the heat transfer ring 42 rotates, the transmission wheel 445 in contact with the heat conduction ring 41 also rotates accordingly. The rotation of the transmission wheel 445 drives the reel 443 to rotate. The rotation of the reel 443 winds the transmission belt 444. The transmission belt 444 pulls the pushing plate 446, so that the silicone grease is slowly smeared at the gap between the heat conduction ring 41 and the heat transfer ring 42 as the heat transfer ring 42 rotates. At this time, the silicone grease completely and evenly fills the gap between the heat conduction ring 41 and the heat transfer ring 42. The silicone grease can provide certain durability and reliability. During long-term operation, new gaps may be generated in the components due to wear or corrosion. The silicone grease can continuously provide heat conduction, while high-precision structures may require more frequent inspections and maintenance.

[0039] Further, the heat conduction fitting groove 44 is filled with heat-conducting silicone grease. The heat-conducting silicone grease is filled between the pushing plate 446 and the introducing plate 447. A diversion groove is formed in the introducing plate 447, which can guide the extruded silicone grease to the gap between the heat conduction ring 41 and the heat transfer ring 42. By filling the gap between the heat transfer ring 42 and the heat conduction ring 41 with the heat-conducting silicone grease, the silicone grease can provide a flexible medium to adapt to the minute deformation caused by thermal expansion or mechanical vibration, and keep the two components in thermal contact all the time, ensuring its heat transfer efficiency. High-precision structures may require more expensive materials and more delicate processing techniques, which will increase the cost. In contrast, the silicone grease is a solution with lower cost and provides good heat conduction performance at the same time. Both the sliding block 442 and the sliding groove 441 have an inclined angle facing the heat conduction ring 41. When the sliding block 442 moves to the limit on the side close to the heat conduction ring 41 of the sliding groove 441, the outer wall of the transmission wheel 445 can be in close contact with the inner wall of the heat conduction ring 41.

[0040] Operation process: When disassembling, the air outlet 43 can be opened. At this time, directly pull the heat transfer ring 42, and the heat transfer ring 42 can be separated from the heat conduction ring 41. At this time, the spliced heat transfer ring 42 can be opened for cleaning and maintenance. After the maintenance is completed, silicone grease is filled between the push plate 446 and the introduction plate 447. Then, the heat transfer ring 42 is inserted into the heat exchange box 4 through the guiding structure. During this process, supported by the guiding structure, the heat transfer ring 42 and the heat conduction ring 41 are not in contact with each other inside, so that the spliced connection end of the heat transfer ring 42 is embedded in the corresponding opening. At this time, the air outlet 43 is locked on the heat exchange box 4. When locking, the pressing block 4421 is pressed to touch the slider 442 with an inclined surface. The slider 442 drives the driving wheel 445 on the reel 443 to move and tightly press against the inner wall of the heat conduction ring 41. And when the reel 443 moves, the push plate 446 is pulled by the transmission belt 444. The push plate 446 pushes the silicone grease into the introduction plate 447, so that the silicone grease in the introduction plate 447 can be smeared between the heat conduction ring 41 and the heat transfer ring 42 at any time. At this time, the driving motor 432 drives the heat transfer ring 42 to rotate. When the heat transfer ring 42 rotates, the driving wheel 445 attached to the heat conduction ring 41 also rotates accordingly. The driving wheel 445 rotates to drive the reel 443 to rotate. The reel 443 rotates to wind the transmission belt 444. The transmission belt 444 pulls the push plate 446, so that the silicone grease is slowly smeared at the gap between the heat conduction ring 41 and the heat transfer ring 42 as the heat transfer ring 42 rotates. Until it rotates 360°, when the push plate 446 is in contact with the introduction plate 447, the transmission ring can no longer rotate, and all the silicone grease is smeared, thus completing the installation of the heat conduction ring 41 and the heat transfer ring 42. The use of silicone grease simplifies the installation and maintenance process. If a high-precision structure is adopted, complex alignment and fastening mechanisms may be required, increasing the installation difficulty and maintenance cost. While silicone grease can fill the gap during component installation, reducing the need for precise alignment. And high-precision structures may require more expensive materials and more delicate processing techniques, which will increase the cost. In contrast, silicone grease is a solution with lower cost and at the same time provides good heat conduction performance.

[0041] Embodiment 3

[0042] As Figures 1 to 8 shown, this is the third embodiment of the present invention. The same parts as the first embodiment and the second embodiment will not be described in detail. The difference between this embodiment and the first embodiment and the second embodiment is that: a cleaning groove 45 is axially formed on the outer wall of the heat transfer ring 42. A scraping plate 451 is installed on the inner wall of the cleaning groove 45. A support plate 452 is installed on one side of the scraping plate 451. An anti-reverse plate 453 is movably installed on one side of the scraping plate 451.

[0043] The cleaning groove 45 is located at the front end of the heat transfer ring 42 of the heat conduction fitting groove 44 in the rotation direction. The scraping plate 451 protrudes and fits with the inner wall of the heat conduction ring 41. The support plate 452 is located on one side of the anti-reverse plate 453 in the rotation direction, and a spring is installed on the outer wall of one side of the anti-reverse plate 453. The spring maintains the inclined state of the anti-reverse plate 453. The anti-reverse plate 453 is inclined towards the silicone grease application end on the scraping plate 451. When the heat transfer ring 42 is inserted into the heat conduction ring 41, the scraping plate 451 enters while fitting with the inside of the heat conduction ring 41. When the heat transfer ring 42 rotates, at the front end of the new silicone grease application, the original residual old silicone grease can be scraped into the cleaning groove 45 through the scraping plate 451. When the maintenance is completed, the silicone grease is replaced, and the inclined state of the anti-reverse plate 453 causes the heat transfer ring 42 to be rotationally locked by moving the push plate 446 to the limit after the silicone grease application in the application rotation direction, while the other rotation direction is inclined and resisted by the anti-reverse plate 453. Thus, after the silicone grease application is completed, the heat transfer ring 42 is automatically locked, preventing the heat transfer ring 42 from shaking.

[0044] Operation process: When the heat transfer ring 42 is inserted into the heat conduction ring 41, the scraping plate 451 enters while fitting with the inside of the heat conduction ring 41. When the heat transfer ring 42 rotates, at the front end of the new silicone grease application, the original residual old silicone grease can be scraped into the cleaning groove 45 through the scraping plate 451. When the maintenance is completed, the silicone grease is replaced, and the inclined state of the anti-reverse plate 453 causes the heat transfer ring 42 to be rotationally locked by moving the push plate 446 to the limit after the silicone grease application in the application rotation direction, while the other rotation direction is inclined and resisted by the anti-reverse plate 453. Thus, after the silicone grease application is completed, the heat transfer ring 42 is automatically locked, preventing the heat transfer ring 42 from shaking.

[0045] Working principle: The waste gas passes through the air inlet 46 and enters the interior of the heat exchange box 4. The flowing waste gas blows on the upper surface of the heat absorption fins 421. The heat absorption fins 421 direct the heat to the heat transfer ring 42 surrounded by the outer circle. There is a small gap between the heat transfer ring 42 and the heat conduction ring 41, and silicone grease is filled in the gap to ensure the heat transfer effect. The heat conduction ring 41 is completely wrapped by the heat exchange water pipe 411, so that the heat of the heat conduction ring 41 can uniformly heat the heat exchange water pipe 411 to ensure the heating effect of its circulating water. The heated circulating water flows to the steam box 3. The hot water vapor in the steam box 3 enters the steam power generation component 2, and then power generation is completed. The electric energy generated by the steam power generation component 2 is stored in the energy storage device and connected to the lighting lamp 1, so as to complete the utilization of waste gas waste heat. When maintaining the heat exchange box 4, it is not necessary to disassemble the whole heat exchange box 4. Just open the air outlet 43. At this time, directly pull the heat transfer ring 42, and the heat transfer ring 42 can be separated from the heat conduction ring 41. At this time, the spliced heat transfer ring 42 can be opened for cleaning and maintenance. After the maintenance is completed, silicone grease is filled between the push plate 446 and the guiding plate 447, and then the heat transfer ring 42 is inserted into the interior of the heat exchange box 4 through the guiding structure. During this process, under the support of the guiding structure, the heat transfer ring 42 and the heat conduction ring 41 do not fit and contact inside, so that the spliced connection end of the heat transfer ring 42 is embedded in the corresponding opening. At this time, the air outlet 43 is locked on the heat exchange box 4. When locking, the pressing block 4421 is pressed to touch the slider 442 with an inclined surface. The slider 442 drives the driving wheel 445 on the reel 443 to move and tightly press against the inner wall of the heat conduction ring 41. When the reel 443 moves, the push plate 446 is pulled by the transmission belt 444. The push plate 446 pushes the silicone grease into the guiding plate 447, so that the silicone grease in the guiding plate 447 can be smeared between the heat conduction ring 41 and the heat transfer ring 42 at any time. At this time, the driving motor 432 drives the heat transfer ring 42 to rotate. When the heat transfer ring 42 rotates, the driving wheel 445 attached to the heat conduction ring 41 also rotates accordingly. The driving wheel 445 rotates to drive the reel 443 to rotate. The reel 443 rotates to wind the transmission belt 444. The transmission belt 444 pulls the push plate 446, so that the silicone grease is slowly smeared between the heat conduction ring 41 and the heat transfer ring 42 as the heat transfer ring 42 rotates. Until when the push plate 446 and the guiding plate 447 are attached after rotating 360°, at this time, the driving motor 432 can no longer drive the heat transfer ring 42 to rotate, and all the silicone grease is smeared. And the other rotation direction is tilted and resisted by the anti-reverse plate 453. Thus, after the silicone grease is smeared, the heat transfer ring 42 is automatically locked, so that the heat transfer ring 42 will not shake.

[0046] In addition to the above embodiments, the present invention can also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A lighting device utilizing the waste heat of a ship's main engine, comprising a heat exchange box (4) connected to the exhaust gas end of the ship, characterized in that: The heat exchange box (4) is also sequentially connected to a steam box (3), a steam generator (2), and a lighting lamp (1); the heat exchange box (4) includes a heat conduction ring (41) provided on the inner wall, a heat exchange water pipe (411) wound and wrapped around the outer side of the heat conduction ring (41), a heat transfer ring (42) placed on the inner wall of the heat conduction ring (41), an air inlet (46) provided on one side of the heat exchange box (4), and a detachable air outlet (43) provided on the side far from the air inlet (46); the terminal of the heat exchange water pipe (411) extends out of the outer wall of the heat exchange box (4) and is connected to the steam box (3) through a connection port (412); the heat conduction ring (41) is integrally cylindrical with an annular cross-section; the heat transfer ring (42) is formed by splicing two semi-cylindrical sheets, the cross-sections of the two semi-cylindrical sheets are semi-annular, and a plurality of heat absorption fins (421) are installed on the inner wall of the heat transfer ring (42); the heat absorption fins (421) are circular plates with notches.

2. The lighting device using the waste heat of the ship's main engine according to claim 1, characterized in that: The heat transfer ring (42) is spliced and installed through fasteners (422).

3. The lighting device using the waste heat of the ship's main engine according to claim 2, characterized in that: A plurality of grooves are provided on the inner wall of one side of the heat transfer ring (42), the number of the grooves is the same as the number of the heat absorption fins (421), and the grooves are fitted with the heat absorption fins (421).

4. The lighting device using the waste heat of the ship's main engine according to claim 2, characterized in that: A rotation limiting ring (431) is installed on the side of the air outlet (43) close to the heat exchange box (4), an opening is provided on the side of the rotation limiting ring (431) close to the heat exchange box (4), the opening on the rotation limiting ring (431) is connected to the fastener (422) of the heat transfer ring (42) in a matching manner, a driving motor (432) is provided at the end of the air outlet (43) far from the heat exchange box (4), and the output end of the driving motor (432) is connected to the rotation limiting ring (431).

5. The lighting device using the waste heat of the ship's main engine according to claim 4, characterized in that: An embedding ring (433) is provided inside the rotation limiting ring (431), and the outer wall of the embedding ring (433) is attached to the inner wall of the heat transfer ring (42).

6. The lighting device using the waste heat of the ship's main engine according to claim 4, characterized in that: A heat conduction fitting groove (44) is provided on the outer wall of the heat transfer ring (42) along the axial direction. Sliding grooves (441) are provided on the inner side walls at both ends in the length direction of the heat conduction fitting groove (44). Sliders (442) are installed in the sliding grooves (441). A reel (443) is fixedly connected between the two sliders (442). The other end of one of the sliders (442) is provided with a pressing block (4421), and the pressing block (4421) extends out of the outer end in the axial direction of the heat transfer ring (42); a transmission belt (444) is installed on the outer wall of the reel (443), and a transmission wheel (445) is sleeved on the reel (443); the outer ring of the transmission wheel (445) is attached to the heat conduction ring (41); a pushing plate (446) and a guiding plate (447) are installed on the inner wall of the heat conduction fitting groove (44), and the outer wall of the pushing plate (446) is connected to the transmission belt (444).

7. The lighting device using the waste heat of the ship's main engine according to claim 6, characterized in that: Thermal grease is filled between the pushing plate (446) and the guiding plate (447), and a diversion groove is provided in the guiding plate (447).

8. The lighting device using the waste heat of the ship's main engine according to claim 6, characterized in that: The sliders (442) and the sliding grooves (441) have an inclination angle towards the heat conduction ring (41).

9. The lighting device using the waste heat of the main engine of a ship according to claim 1, characterized in that: The outer wall of the heat transfer ring (42) is provided with a cleaning groove (45) along the axial direction. A scraping plate (451) is installed on the inner wall of the cleaning groove (45). A support plate (452) is installed on one side of the scraping plate (451). An anti-reverse plate (453) is movably installed on one side of the scraping plate (451).

10. The lighting device using the waste heat of the ship's main engine according to claim 9, characterized in that: The cleaning groove (45) is located at the front end in the rotation direction of the heat transfer ring (42) of the heat conduction fitting groove (44). The scraping plate (451) protrudes and fits with the inner wall of the heat conduction ring (41). The support plate (452) is located on one side in the rotation direction of the anti-reverse plate (453). A spring is installed on the outer wall of one side of the anti-reverse plate (453). The anti-reverse plate (453) is inclined on the scraping plate (451) towards the silicone grease application end.

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