A method and device for comprehensive utilization of waste heat from annular cooler

Abstract

The present application relates to a method and device for comprehensive utilization of waste heat from a ring cooler, which belongs to the technical field of waste heat collection. It includes an annular base and a rotating frame fixed on the annular base. A smoke inlet chamber is fixed on the top of the rotating frame, and an insulating chamber is fixed on the annular base. Insulating liquid is stored in the insulating chamber. A contact groove is provided on the partition between two adjacent insulating chambers, and a contact member is slidingly provided in the contact groove. The two ends of the contact member are in contact with the insulating liquid in the two adjacent insulating chambers respectively. A liquid outlet pipe is fixed on the bottom surface of the insulating chamber. A solenoid valve is provided on the liquid outlet pipe. A guide plate is fixed on the side wall of the contact member, and a guide groove for accommodating the guide plate is provided on the inner wall of the contact groove. A magnetic valve switch 2 is provided in the guide groove. The solenoid valve on the liquid outlet pipe is connected to the magnetic valve switch 2. The present application has the effect of automatically judging heat leakage of a ring cooler.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat collection, and in particular to a method and device for comprehensive utilization of waste heat from a ring cooler. Background Art

[0002] A ring cooler is a device used to cool high-temperature sintered ore. The high-temperature ore is typically cooled by exhaust or forced air to recover waste heat. Cold air is typically drawn in from the bottom of the cooler, passed through the ore layer, and exchanged heat with the high-temperature ore. The heated air is then recovered and used for drying and preheating the green pellets. The trolley transporting the sintered ore moves in a circular motion within the ring cooler's rotating frame, driving the ore throughout the cooling process.

[0003] During operation, a ring cooler is prone to heat loss on both sides of its revolving frame. Water seals are commonly used to reduce this heat loss. These seals create a seal by placing a layer of cooling water on both sides of the revolving frame, thereby reducing the ingress of cold air and the escape of hot air, improving heat exchange efficiency.

[0004] However, over the long term, high temperatures and mechanical stresses of a ring cooler can cause cracks or other damage to the slewing frame, further exacerbating heat loss. These cracks or damage can be obscured by ore or dust, making them difficult to detect during maintenance. When the ring cooler is recovering waste heat, significant heat loss can severely impact the system's thermal and energy recovery efficiency. Furthermore, necessary maintenance and repairs may require the ring cooler to be shut down, further impacting production efficiency and profitability. Summary of the Invention

[0005] In order to improve the above problems, the present application provides a method and device for comprehensive utilization of waste heat from a ring cooler.

[0006] This application provides a device for comprehensive utilization of waste heat from a ring cooler, which adopts the following technical solution:

[0007] A device for comprehensively utilizing waste heat from a ring cooler comprises an annular base and a rotating frame fixed on the annular base, a smoke inlet chamber fixed on the top of the rotating frame, and an insulating chamber fixed on the annular base; insulating liquid is stored in the insulating chamber; a contact groove is provided on the partition between two adjacent insulating chambers, and a contact piece is slidably provided in the contact groove; both ends of the contact piece are respectively in contact with the insulating liquid in the two adjacent insulating chambers.

[0008] Optionally, a liquid outlet pipe is fixedly provided on the bottom surface of the insulation chamber; an electromagnetic valve is provided on the liquid outlet pipe; a guide plate is fixedly provided on the side wall of the contact member, and a guide groove for accommodating the guide plate is opened on the inner wall of the contact groove; a magnetic valve switch 2 is provided in the guide groove; the electromagnetic valve on the liquid outlet pipe is connected to the magnetic valve switch 2.

[0009] Optionally, a magnetic block is fixedly provided on the side wall of the guide groove, and the magnetic block is an electromagnet; the magnetic block is electrically connected to the second magnetic valve switch; and a metal block that can be magnetically attracted to the magnetic block is fixedly provided on the side wall of the guide plate.

[0010] Optionally, a liquid inlet pipe is fixedly provided on the top surface of the insulation chamber; an electromagnetic valve is provided on the liquid inlet pipe, a float tube is fixedly provided on the side wall of the insulation chamber, and a float ball is provided in the float tube; a magnetic valve switch 1 is provided on the top of the float tube; the electromagnetic valve of the liquid inlet pipe is connected to the magnetic valve switch 1.

[0011] Optionally, several groups of heat transfer components are arranged on the insulation wall between the insulation chamber and the smoke inlet chamber, and the heat transfer components include a liquid inlet pump, an evaporating tube, an expansion valve and a condensing tube connected in sequence; a coolant is flowed in the heat transfer components; the evaporating tube is located in the smoke inlet chamber, and the condensing tube is located in the insulation chamber.

[0012] Optionally, the liquid inlet pump includes a shell and a piston slidably arranged in the shell; a coolant inlet pipe and a coolant outlet pipe are fixedly provided on the outer peripheral surface of the shell, the outlet of the coolant inlet pipe is provided with a liquid inlet plug, and the inlet of the coolant outlet pipe is provided with a liquid outlet plug; the liquid inlet plug and the liquid outlet plug are both provided with return springs.

[0013] Optionally, several water wheels are rotatably arranged on the insulation wall, a transmission wheel 1 is coaxially connected to one side of the water wheel, a transmission wheel 2 and an eccentric wheel that engage with the transmission wheel 1 are rotatably arranged inside the insulation wall; the transmission wheel 2 is coaxially fixed to the eccentric wheel; the eccentric wheel is hinged to the piston through a connecting rod.

[0014] Optionally, a wheel groove for accommodating the water wheel is formed on the heat-insulating wall, and a stopper is fixed in the wheel groove; a stopper groove for accommodating the stopper is formed on the axis of the water wheel; and the stopper is an electromagnet.

[0015] Optionally, the expansion valve includes a valve body and a valve core; a liquid flow channel is coaxially arranged in the valve body; the valve core is passed through the liquid flow channel; a liquid cavity is provided in the valve body on both sides of the liquid flow channel; a connecting groove is provided on the top surface of the liquid cavity, and the end of the valve core is slidably arranged in the connecting groove; a magnet is fixed on the top surface of the connecting groove, and the magnet is an electromagnet; a metal sheet that can be magnetically attracted to the magnet is fixed on the end of the valve core; a compression spring is fixed between the top surface of the liquid cavity and the valve core.

[0016] The present application provides a method for comprehensive utilization of waste heat from a ring cooler, which uses a comprehensive utilization device for waste heat from a ring cooler to recover leaked heat from the ring cooler.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. The function of cooling water is to prevent heat loss. A small amount of heat exchange is inevitable between the heat insulation wall of the smoke inlet chamber and the heat insulation chamber. The cooling water can serve as a buffer between the smoke inlet chamber and the outside world, preventing the outside cold air from directly entering the smoke inlet chamber. On the other hand, when cracks appear on the heat insulation wall, which may cause heat loss, the lost heat can be collected by flowing cooling water.

[0019] 2. The flow of cooling water is controlled by the contact. When the cooling water temperature on one side rises, the cooling water expands, causing the water pressure to rise. The change in water pressure drives the contact to move. Since the contact controls the solenoid valve that discharges water, when the contact moves, the cooling water in the chamber flows and takes away the heat.

[0020] 3. The inlet pump increases the temperature and pressure of the gaseous coolant, allowing it to release heat and transform into a liquid state when it contacts the cooling water. The expansion valve reduces the temperature and pressure of the liquid coolant, allowing it to absorb heat and transform into a gaseous state when it contacts the material. This process creates a heat exchange between the cooling water and the material. In the event of heat leakage, the cooling water flow accelerates the removal of heat from the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial structural diagram of the ring cooler waste heat comprehensive utilization device in an embodiment of the present application.

[0022] Figure 2 It is a schematic structural diagram of the heat-insulating chamber of an embodiment of the present application.

[0023] Figure 3 It is a schematic structural diagram of the heat-insulating wall facing the heat-insulating chamber in an embodiment of the present application.

[0024] Figure 4 It is a cross-sectional view of the heat transfer component of an embodiment of the present application.

[0025] Reference numerals: 1, annular base; 11, rotating frame; 12, smoke inlet chamber; 13, air outlet tower; 14, housing; 15, support frame; 16, piston; 17, magnetic block; 18, connecting rod; 19, heat insulation chamber; 2, liquid inlet pipe; 21, liquid outlet pipe; 22, heat insulation wall; 23, limit plate; 24, contact member; 25, contact groove; 26, guide plate; 3, partition; 31, evaporation tube; 32, expansion valve; 33, condenser; 34, coolant inlet pipe; 35 , coolant outlet pipe; 36, liquid inlet plug; 37, liquid outlet plug; 38, return spring; 4, water wheel; 41, wheel plate; 42, transmission wheel one; 43, transmission wheel two; 44, connecting shaft; 45, bevel gear set; 46, eccentric wheel; 47, wheel groove; 48, stopper; 49, stop groove; 5, valve body; 51, valve core; 52, inlet end; 53, metal sheet; 54, compression spring; 55, liquid flow channel; 56, liquid cavity; 57, connecting groove; 58, outlet end. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 This application is described in further detail.

[0027] The embodiment of the present application discloses a method and device for comprehensive utilization of waste heat from a ring cooler. The device for comprehensive utilization of waste heat from a ring cooler includes an annular base 1 and a trolley rotatably arranged on the annular base 1. Several trolleys are connected end to end to form an annular trolley group. An annular rotating frame 11 is fixedly provided on the annular base 1, and the trolley group is rotatably arranged in the rotating frame 11. An annular smoke inlet chamber 12 is fixedly provided on the top of the rotating frame 11, and the smoke inlet chamber 12 is connected to the rotating frame 11. Several groups of air outlet towers 13 are fixedly provided on the top of the smoke inlet chamber 12; an air pump is provided in the air outlet tower 13 for collecting the airflow in the smoke inlet chamber 12.

[0028] A feed chamber is also fixed to the top of the revolving frame 11. This feed chamber separates the smoke inlet chamber 12. The annular head and tail of the smoke inlet chamber 12 are respectively fixed to the two vertical side walls of the feed chamber. The feed chamber is connected to the revolving frame 11, and the material falls from the feed chamber and drops onto the rotating trolley.

[0029] A plurality of support frames 15 are evenly distributed along the circumference of the annular base 1. The support frames 15 are respectively fixed to the outer walls of the smoke inlet chamber 12 and the revolving frame 11 to provide support therefor.

[0030] An annular barrier is fixed between the revolving frame 11 and the annular base 1. This barrier consists of a blast chamber, a fixed layer, and a material discharge chamber, connected end-to-end. The blast chamber is connected to the revolving frame 11 and houses a blower that blows air upward vertically. The fixed layer is a solid pad that supports the revolving frame 11. The material discharge chamber is also connected to the revolving frame 11. The trolley moves above the material discharge chamber and tilts downward to discharge the material.

[0031] In one embodiment, the trolley comprises a square outer frame and a plurality of support beams uniformly distributed within the frame along the trolley's transverse and longitudinal directions. The material falls onto the support beams; the cool airflow blown upward by the blower contacts the material, carrying heat and continuing upward into the smoke inlet chamber 12. The hot airflow eventually leaves the smoke inlet chamber 12 through the outlet tower 13.

[0032] An insulating chamber 19 with an arc-shaped cross section is fixed to the annular base 1. Several insulating chambers 19 are connected end-to-end to form a ring. The insulating chambers 19 include an inner insulating chamber fixed to the inner circumference of the revolving frame 11 and an outer insulating chamber fixed to the outer circumference of the revolving frame 11. The top surface of the insulating chamber 19 is at the same height as the top surface of the revolving frame 11. The insulating chambers 19 contain an insulating liquid. In one embodiment, the insulating liquid is water.

[0033] The top and bottom surfaces of the insulated chamber 19 are fixedly mounted with a liquid inlet pipe 2 and a liquid outlet pipe 21, respectively. Each pipe is equipped with a solenoid valve that closes when power is removed. A magnetic valve switch 1 is installed in the circuit connecting the solenoid valve of the liquid inlet pipe 2 to the power supply, while a magnetic valve switch 2 is installed in the circuit connecting the solenoid valve of the liquid outlet pipe 21 to the power supply. Magnetic valve switch 2 is a single-pole, double-throw (SPDT) switch.

[0034] A vertically movable float is installed within the insulation chamber 19. A vertically mounted float tube is fixed to the sidewall of the insulation chamber 19, and the float slides within the tube. A magnetic valve switch 1 is located at the top of the tube; as the liquid level rises, the float contacts the magnetic valve switch 1. Specifically, when the float contacts the magnetic valve switch 1, the magnetic valve switch 1 is disconnected, closing the solenoid valve in the liquid inlet pipe 2. Conversely, when the magnetic valve switch 1 is connected, the solenoid valve is open.

[0035] In one embodiment, the cross section of the float tube is square. The bottom surface of the float tube is connected to the heat insulation chamber 19 and is fixed with a limit plate to prevent the float ball from falling off. The magnetic valve switch is set on the inner top surface of the float tube.

[0036] A contact member 24 that moves in the horizontal direction is provided on the inner wall of the two adjacent insulation chambers 19. Specifically, a horizontally arranged contact groove 25 is provided on the partition 3 between the two adjacent insulation chambers 19, and the contact member 24 is slidably provided in the contact groove 25. A guide piece 26 is fixed to the side wall of the contact member 24, and a guide groove for accommodating the guide piece 26 is provided on the inner wall of the contact groove 25. The magnetic valve switch 2 is provided in the guide groove. In one embodiment, the direction toward the left insulation chamber 19 is direction one; after the guide piece 26 moves a certain distance toward direction one, the guide piece 26 contacts the magnetic valve switch 2, and the solenoid valve of the liquid outlet pipe 21 is in a conducting state; when the guide piece 26 does not move, or when the guide piece 26 moves in the opposite direction of direction one, the solenoid valve of the liquid outlet pipe 21 is disconnected from the power supply.

[0037] Specifically, before the float rises to the top of the float tube, the solenoid valve of the liquid inlet pipe 2 is in the open state, and the water level in the insulation chamber 19 continues to rise; after the float contacts the magnetic valve switch, the solenoid valve of the liquid inlet pipe 2 is in the closed state.

[0038] Specifically, the two ends of the contact member 24 contact the cooling water in two adjacent insulation chambers 19. Because the temperatures in the two insulation chambers 19 are similar and the cooling water density is consistent, the distances the two ends of the contact member 24 extend beyond the contact groove 25 are approximately the same. When a crack develops between the insulation chamber 19 and the smoke inlet chamber 12, heat exchange between the two chambers 19 intensifies, accelerating the temperature rise of the cooling water in the insulation chamber 19 and creating a temperature difference between the cooling water in the two adjacent insulation chambers 19. The rising water level caused by thermal expansion of the cooling water causes the contact member 24 to move toward the adjacent insulation chamber 19. When the cooling water temperature rises above a preset range, the guide plate 26 moves to contact the second magnetic valve switch, opening the solenoid valve of the liquid outlet pipe 21 and lowering the water level in the insulation chamber 19. After the float separates from the first magnetic valve switch, the solenoid valve of the liquid inlet pipe 2 opens, allowing the cooling water in the insulation chamber 19 to flow, thereby collecting heat from the insulation chamber 19.

[0039] A magnet 17, an electromagnet, is embedded in the sidewall of the guide groove and electrically connected to the second magnetic valve switch. A metal block, magnetically attracted to the magnet 17, is fixed to the sidewall of the guide plate 26. When the guide plate 26 contacts the second magnetic valve switch, the magnet 17 is in a conductive state and attracts the metal block, maintaining the conductive state between the guide plate 26 and the second magnetic valve switch.

[0040] The side wall of the insulated chamber 19 adjacent to the smoke inlet chamber 12 is an insulated wall 22. Several heat transfer components are installed within the insulated wall 22 to accelerate heat exchange between the cooling water in the insulated chamber 19 and the material in the smoke inlet chamber 12 when the solenoid valve is open. The heat transfer components include an inlet pump, an evaporator tube 31, an expansion valve 32, and a condenser tube 33, all connected in sequence. Coolant flows within the heat transfer components; in one embodiment, the coolant can be liquid water. The inlet pump and expansion valve 32 are located within the insulated wall 22, while the evaporator tube 31 and condenser tube 33 extend beyond the insulated wall 22. The evaporator tube 31 is located within the smoke inlet chamber 12, while the condenser tube 33 is located within the insulated chamber 19. After flowing into the evaporator tube 31, the coolant transforms from liquid to gas, absorbing heat. After flowing into the condenser tube 33, the coolant transforms from gas to liquid, releasing heat. When the inlet pump and expansion valve 32 are closed, the coolant within the heat transfer components remains stationary.

[0041] The liquid inlet pump includes a housing 14 and a piston 16 slidably disposed within the housing 14. In one embodiment, the housing 14 is axially disposed horizontally. A coolant inlet pipe 34 and a coolant outlet pipe 35 are fixedly disposed on the outer circumference of the housing 14. Preferably, the coolant inlet pipe 34 and the coolant outlet pipe 35 are disposed on either side of the housing 14. The coolant inlet pipe 34 is connected to the evaporation pipe 31, and the coolant outlet pipe 35 is connected to the condenser pipe 33.

[0042] An inlet plug 36 is provided at the outlet of the coolant inlet pipe 34, and an outlet plug 37 is provided at the inlet of the coolant outlet pipe 35. A stopper 23 is fixed to the ends of both the inlet plug 36 and the outlet plug 37. The stopper 23 on the inlet plug 36 abuts the outlet of the coolant inlet pipe 34, while the stopper 23 on the outlet plug 37 abuts the inlet end 52 of the coolant outlet pipe 35. Return springs 38 are provided between the inlet plug 36 and the coolant inlet pipe 34, and between the outlet plug 37 and the coolant outlet pipe 35.

[0043] Specifically, when the piston 16 moves away from the top surface of the shell 14, the internal pressure of the shell 14 is less than the external pressure, the liquid inlet plug 36 moves toward the inner side of the shell 14, and a gap appears between the limit plate 23 on the liquid inlet plug 36 and the coolant inlet pipe 34. The coolant in the evaporator tube 31 enters the shell 14 through the coolant inlet pipe 34; conversely, when the piston 16 moves toward the top surface of the shell 14, the coolant enters the condenser tube 33 through the coolant outlet pipe 35.

[0044] It should be noted that after releasing heat in the evaporator, the coolant transforms from a gaseous state to a liquid state. After passing through the inlet pump, it is compressed by piston 16, increasing the pressure and temperature of the coolant. The high-temperature, high-pressure coolant then enters condenser tube 33, where it exchanges heat with the cooling water within insulation chamber 19, releasing heat and transforming from liquid to gas. Several water wheels 4 are rotatably mounted on insulation wall 22 of insulation chamber 19. The flow of cooling water within insulation chamber 19 drives these wheels 4 to rotate. Several wheel plates 41 are evenly distributed on the outer circumference of water wheel 4.

[0045] One side of the water wheel 4 is connected to a transmission wheel 1 42 via a bevel gear set 45. Preferably, the transmission wheel 1 42 is connected to the bevel gear set 45 via a connecting shaft 44. A transmission wheel 2 43 and an eccentric wheel 46 are rotatably provided in the heat insulation wall 22 and mesh with the transmission wheel 1 42. The transmission wheel 2 43 and the eccentric wheel 46 are coaxially fixedly connected. The eccentric shaft of the eccentric wheel 46 is hinged to the bottom end of the piston 16 via the connecting rod 18; during the rotation of the eccentric wheel 46, the piston 16 reciprocates in the housing 14. Specifically, after the solenoid valve is opened, the cooling water in the heat insulation chamber 19 is in a flowing state, the water wheel 4 rotates, and drives the coolant circulation through the piston 16.

[0046] The heat-insulating wall 22 is provided with a wheel groove 47 for accommodating the water wheel 4, and a stopper 48 is fixed to the groove wall of the wheel groove 47; a stopper groove 49 is provided at the axis of the water wheel 4 for accommodating the stopper 48. The stopper 48 is an electromagnet, and when energized, the stopper 48 can be magnetically attracted to the stopper groove 49.

[0047] The expansion valve 32 comprises a valve body 5 and a valve core 51. The inlet end 52 and outlet end 58 of the valve body 5 are respectively fixed to the outer circumference of the valve body 5. The inlet end 52 of the valve body 5 is connected to the condenser tube 33, and the outlet end 58 is connected to the evaporator tube 31. A liquid flow channel 55 is coaxially arranged within the valve body 5. The valve core 51 extends through the liquid flow channel 55. Liquid chambers 56 are provided within the valve body 5 at the inlet and outlet of the liquid flow channel 55. The diameter of the liquid chamber 56 is larger than that of the liquid flow channel 55. The end of the valve core 51 is connected to the top surface of the liquid chamber 56. Specifically, a connecting groove 57 is defined in the top surface of the liquid chamber 56, and the end of the valve core 51 slides into the connecting groove 57. A magnet, an electromagnet, is fixed to the top surface of the connecting groove 57. A metal sheet 53 that magnetically attracts the magnet is fixed to the end of the valve core 51. A compression spring 54 is fixed between the top surface of the liquid chamber 56 and the valve core 51 to drive the valve core 51 back away from the magnet.

[0048] A liquid sealing disk is fixed to the end of the valve core 51 away from the magnet; a liquid sealing groove is formed at the end of the liquid flow channel 55 away from the magnet, which is pluggable with the liquid sealing disk. Specifically, when the magnet is energized, the valve core 51 moves and causes the liquid sealing disk to plug into the liquid sealing groove, and the liquid flow channel 55 is blocked; otherwise, the liquid flow channel 55 is open. The magnet is connected in series with the stopper 48 and is also connected to the second magnetic valve switch. When the guide plate 26 is separated from the second magnetic valve switch, the magnet and stopper 48 are in a conductive state. After the guide plate 26 contacts the second magnetic valve switch, the magnet and stopper 48 are disconnected from the power supply.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for comprehensively utilizing waste heat from a ring cooler, comprising an annular base (1) and a rotary frame (11) fixedly mounted on the annular base (1), wherein a smoke inlet chamber (12) is fixedly mounted on the top of the rotary frame (11), and characterized in that: A heat-insulating chamber (19) is fixedly provided on the annular base (1); a heat-insulating liquid is stored in the heat-insulating chamber (19); a contact groove (25) is provided on the partition (3) between two adjacent heat-insulating chambers (19); a contact member (24) is slidably provided in the contact groove (25); two ends of the contact member (24) are respectively in contact with the heat-insulating liquid in the two adjacent heat-insulating chambers (19); A liquid outlet pipe (21) is fixedly provided on the bottom surface of the heat-insulating chamber (19); a solenoid valve is provided on the liquid outlet pipe (21); a guide piece (26) is fixedly provided on the side wall of the contact member (24); a guide groove for accommodating the guide piece (26) is provided on the inner wall of the contact groove (25); a second magnetic valve switch is provided in the guide groove; the solenoid valve on the liquid outlet pipe (21) is connected to the second magnetic valve switch; A liquid inlet pipe (2) is fixedly provided on the top surface of the heat-insulating chamber (19); a solenoid valve is provided on the liquid inlet pipe (2); a floating tube is fixedly provided on the side wall of the heat-insulating chamber (19), and a floating ball is provided in the floating tube; a magnetic valve switch 1 is provided on the top end of the floating tube; the solenoid valve of the liquid inlet pipe (2) is connected to the magnetic valve switch 1.

2. The device for comprehensive utilization of waste heat from an annular cooler according to claim 1, characterized in that: A magnetic block (17) is fixedly provided on the side wall of the guide groove, and the magnetic block (17) is an electromagnet; the magnetic block (17) is electrically connected to the second magnetic valve switch; and a metal block that can be magnetically attracted to the magnetic block (17) is fixedly provided on the side wall of the guide plate (26).

3. The device for comprehensive utilization of waste heat from an annular cooler according to claim 1, characterized in that: A plurality of heat transfer components are provided on the heat insulation wall (22) between the heat insulation chamber (19) and the smoke inlet chamber (12), and the heat transfer components include a liquid inlet pump, an evaporation tube (31), an expansion valve (32) and a condensation tube (33) connected in sequence; a coolant flows in the heat transfer components; the evaporation tube (31) is located in the smoke inlet chamber (12), and the condensation tube (33) is located in the heat insulation chamber (19).

4. The device for comprehensive utilization of waste heat from an annular cooler according to claim 3, characterized in that: The liquid inlet pump comprises a housing (14) and a piston (16) slidably arranged in the housing (14); a coolant inlet pipe (34) and a coolant outlet pipe (35) are fixedly provided on the outer peripheral surface of the housing (14); an inlet plug (36) is provided at the outlet of the coolant inlet pipe (34), and an outlet plug (37) is provided at the inlet of the coolant outlet pipe (35); and a return spring (38) is provided on both the inlet plug (36) and the outlet plug (37).

5. The device for comprehensive utilization of waste heat from an annular cooler according to claim 4, characterized in that: A plurality of water wheels (4) are rotatably provided on the heat-insulating wall (22), a transmission wheel 1 (42) is coaxially connected to one side of the water wheel (4), a transmission wheel 2 (43) meshing with the transmission wheel 1 (42) and an eccentric wheel (46) are rotatably provided in the heat-insulating wall (22); the transmission wheel 2 (43) is coaxially fixedly connected to the eccentric wheel (46); the eccentric wheel (46) is hinged to the piston (16) via a connecting rod (18).

6. The device for comprehensive utilization of waste heat from an annular cooler according to claim 5, characterized in that: A wheel groove (47) for accommodating the water wheel (4) is provided on the heat-insulating wall (22), and a stopper (48) is fixedly provided in the wheel groove (47); a stopper groove (49) for accommodating the stopper (48) is provided on the axis of the water wheel (4); and the stopper (48) is an electromagnet.

7. The device for comprehensive utilization of waste heat from an annular cooler according to claim 3, characterized in that: The expansion valve (32) comprises a valve body (5) and a valve core (51); a liquid flow channel (55) is coaxially arranged in the valve body (5); the valve core (51) is penetrated in the liquid flow channel (55); a liquid cavity (56) is provided in the valve body (5) on both sides of the liquid flow channel (55); a connecting groove (57) is provided on the top surface of the liquid cavity (56), and the end of the valve core (51) is slidably arranged in the connecting groove (57); a magnet is fixed on the top surface of the connecting groove (57), and the magnet is an electromagnet; a metal sheet (53) that can be magnetically attracted to the magnet is fixed on the end of the valve core (51); a compression spring (54) is fixed between the top surface of the liquid cavity (56) and the valve core (51).

8. A method for comprehensive utilization of waste heat from a ring cooler, characterized by: The ring cooler waste heat comprehensive utilization device described in any one of claims 1 to 7 is used to recover the leaked heat of the ring cooler.

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