Low-grade heat source heat extraction device

Abstract

The utility model relates to a low-grade heat source heat extraction device which comprises an outer heat preservation cylinder, an inner heat preservation cylinder is coaxially arranged in the outer heat preservation cylinder, a heat conduction cylinder is coaxially arranged in the inner heat preservation cylinder, and a heat conduction pipe is coaxially arranged in the heat conduction cylinder. A gap is reserved between the inner heat preservation barrel and the heat conduction barrel to form a first cold water flow channel, a gap is reserved between the heat conduction barrel and the heat conduction pipe to form a waste residue flow channel, a second cold water flow channel is formed in the heat conduction pipe, and a plurality of first heat conduction rings and second heat conduction rings are arranged in the waste residue flow channel and distributed in an up-down spaced and staggered mode. The outer ring surface of the first heat-conducting ring is fixedly sleeved with the inner side wall of the heat-conducting cylinder, the inner ring surface of the first heat-conducting ring is inverted conical, and a gap is reserved between the bottom end of the first heat-conducting ring and the heat-conducting pipe; the inner ring surface of the second heat-conducting ring is fixedly sleeved with the outer side wall of the heat-conducting pipe, and the outer ring surface of the second heat-conducting ring is right conical, and a gap is reserved between the bottom end of the second heat-conducting ring and the heat-conducting cylinder. According to the utility model, waste residues can be crushed firstly and then subjected to multiple diversion heat exchange, so that the heat transfer is more sufficient, and the extraction quality is higher.

Description

Technical Field

[0001] This utility model belongs to the field of low-grade thermal energy utilization technology, specifically relating to a low-grade heat source heat extraction device. Background Technology

[0002] Currently, the waste gas, slag, and other waste materials generated during coking production typically contain a large amount of residual heat. This residual heat is a type of low-grade thermal energy. Directly releasing it into the external environment not only causes environmental pollution but also results in a significant waste of low-grade thermal energy resources and increases the energy consumption of enterprises. Therefore, existing coking production typically employs certain waste heat recovery measures to extract and utilize this low-grade thermal energy. In extracting heat from slag, the waste slag is often directly exchanged with cold water. However, because the flow rate of the waste slag relative to the cold water is relatively fast, and the heat in large pieces of waste slag is not easily dissipated, the overall heat recovery efficiency is low, and the extraction quality of low-grade thermal energy is poor, requiring improvement. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a low-grade heat source heat extraction device, which can first crush the waste residue and then conduct multiple flow-guided heat exchange to solve the above problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-grade heat source heat extraction device, comprising an outer insulation cylinder and a roller crusher, wherein an inner insulation cylinder is coaxially arranged inside the outer insulation cylinder, a heat-conducting cylinder is coaxially arranged inside the inner insulation cylinder, and a heat-conducting pipe is coaxially arranged inside the heat-conducting cylinder. The top and bottom ends of the inner insulation cylinder, the heat-conducting cylinder, and the heat-conducting pipe are all open and fixedly connected to the top and bottom ends of the outer insulation cylinder. A gap is left between the inner insulation cylinder and the heat-conducting cylinder to form a first cold water channel; a gap is left between the heat-conducting cylinder and the heat-conducting pipe to form a waste residue channel; and the interior of the heat-conducting pipe is a second cold water channel. The bottom of the corresponding outer insulation cylinder is connected to an inlet pipe, and the top of the corresponding outer insulation cylinder is connected to an outlet pipe. Both the inlet and outlet pipes are equipped with quick connectors. The waste residue channel contains several first heat-conducting rings and several second heat-conducting rings, the first and second heat-conducting rings being arranged in a... The heat-conducting rings are staggered and intermittently distributed. The outer ring of the first heat-conducting ring is fixedly fitted to the inner wall of the heat-conducting cylinder, and the inner ring is inverted conical with a gap between its bottom end and the heat-conducting pipe. The inner ring of the second heat-conducting ring is fixedly fitted to the outer wall of the heat-conducting pipe, and the outer ring is conical with a gap between its bottom end and the heat-conducting cylinder. The top of the outer insulation cylinder corresponding to the waste slag flow channel is connected to several slag inlet branch pipes distributed circumferentially, and the bottom of the corresponding outer insulation cylinder is connected to several slag inlet branch pipes distributed circumferentially. The outer insulation cylinder has a distributed slag discharge branch pipe. The top of the outer insulation cylinder is coaxially provided with a slag inlet main pipe with an open top, and the bottom of the outer insulation cylinder is coaxially provided with a slag discharge main pipe with an open bottom. The slag inlet branch pipes are all connected to the circumference of the slag inlet main pipe through a first inclined pipe, and the slag discharge branch pipes are all connected to the circumference of the slag discharge main pipe through a second inclined pipe. The roller crusher is fixedly mounted above the slag inlet main pipe and its bottom is detachably connected to the slag inlet main pipe. Its bottom discharge port is connected to the top of the slag inlet main pipe.

[0005] Preferably, a square fixing plate is fixedly fitted at the top of the slag inlet main pipe, and fixing grooves are opened on both the left and right sides of the fixing plate. Supports are vertically fixed on both the left and right sides of the bottom of the roller crusher, and electric push rods are horizontally fixed on the lower part of the two supports. The telescopic ends of the two electric push rods are arranged opposite each other and fixedly connected with locking plates. The discharge port of the roller crusher is in contact with the top of the slag inlet main pipe, and the locking plates are inserted into the fixing grooves on the same side.

[0006] Preferably, the locking plate is adapted to the corresponding fixing groove.

[0007] Preferably, a gap is left between the outer insulation cylinder and the inner insulation cylinder, and this gap is vacuum-formed to form a vacuum cavity.

[0008] Preferably, the lower part of the outer insulation cylinder is fixedly fitted with a bracket, and the bottom four corners of the bracket are all fixed with legs, and the bottom ends of the legs are all connected to casters with brakes.

[0009] The beneficial effects of this utility model are as follows: In use, the inlet pipe can be connected to the inlet pipe connected to the cold water source via a quick connector, and the outlet pipe can be connected to the outlet pipe connected to the hot water storage or usage equipment. Then, the waste residue is poured into the roller crusher, which effectively crushes the waste residue, making it finer, increasing its heating area, and facilitating the dissipation of heat inside the waste residue, thus making it more conducive to subsequent heat exchange between the waste residue and the cold water. Next, the refined waste residue discharged from the roller crusher can first fall into the main inlet pipe, and then be distributed to each first inclined pipe. Through the cooperation of multiple sets of first inclined pipes and inlet branch pipes, the refined waste residue can be more evenly conveyed and distributed to the top of the waste residue flow channel. Subsequently, under the guiding effect of multiple staggered first and second heat-conducting rings, the refined waste residue flows downward in a zigzag pattern, effectively prolonging the residence time of the waste residue in the waste residue flow channel. When the waste residue flows on the first heat-conducting ring, some heat is transferred to the cold water flowing through the first cold water channel via the first heat-conducting ring and heat-conducting cylinder, and some heat is transferred to the cold water flowing through the second cold water channel via the heat-conducting pipe. Similarly, when the waste residue flows on the second heat-conducting ring, some heat is transferred to the cold water flowing through the second cold water channel via the second heat-conducting ring and heat-conducting pipe, and some heat is transferred to the cold water flowing through the first cold water channel via the heat-conducting cylinder, achieving more thorough heat transfer. Finally, the waste residue can be discharged through multiple slag discharge branch pipes and, under the action of the second inclined pipe, converges in the slag discharge main pipe and is discharged to the outside. In this way, multiple flow-guided heat exchange can be achieved on the pulverized waste residue, resulting in more thorough heat transfer, higher quality extraction of low-grade heat energy contained in the waste residue, and greater practicality.

[0010] In addition, the quick-connect fittings make it easier to quickly connect and disconnect the inlet and outlet pipes to the corresponding pipelines. The detachable connection between the slag inlet main pipe and the bottom of the roller crusher allows for flexible disassembly and replacement of the entire outer insulation cylinder when it becomes worn or damaged after a period of use. This makes it more flexible, convenient, and practical to use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the external insulation cylinder of this utility model;

[0013] Figure 3 This is a top view of the structure at the height of the first heat-conducting ring of this utility model;

[0014] Figure 4 This is a top view of the structure at the height of the second heat-conducting ring of this utility model;

[0015] Figure 5This is a schematic diagram of the main structure of the roller crusher of this utility model.

[0016] The following numbers are labeled in the diagram: 1 is the outer insulation cylinder, 2 is the roller crusher, 3 is the inner insulation cylinder, 4 is the heat-conducting cylinder, 5 is the heat-conducting pipe, 6 is the water inlet pipe, 7 is the water outlet pipe, 8 is the quick connector, 9 is the first heat-conducting ring, 10 is the second heat-conducting ring, 11 is the slag inlet branch pipe, 12 is the slag outlet branch pipe, 13 is the slag inlet main pipe, 14 is the slag outlet main pipe, 15 is the first inclined pipe, 16 is the second inclined pipe, 17 is the fixing plate, 18 is the fixing groove, 19 is the support, 20 is the electric push rod, 21 is the locking plate, 22 is the vacuum chamber, 23 is the bracket, 24 is the support leg, and 25 is the caster. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] like Figures 1 to 5 As shown, a low-grade heat source heat extraction device includes an outer insulation cylinder 1 and a roller crusher 2. An inner insulation cylinder 3 is coaxially arranged inside the outer insulation cylinder 1, a heat-conducting cylinder 4 is coaxially arranged inside the inner insulation cylinder 3, and a heat-conducting pipe 5 is coaxially arranged inside the heat-conducting cylinder 4. The top and bottom ends of the inner insulation cylinder 3, the heat-conducting cylinder 4, and the heat-conducting pipe 5 are all open and fixedly connected to the top and bottom of the outer insulation cylinder 1. A gap is left between the inner insulation cylinder 3 and the heat-conducting cylinder 4 to form a first cold water flow channel; a gap is left between the heat-conducting cylinder 4 and the heat-conducting pipe 5 to form a waste residue flow channel; and the interior of the heat-conducting pipe 5 is a second cold water flow channel. The bottom of the corresponding outer insulation cylinder 1 is connected to a water inlet pipe 6, and the top of the corresponding outer insulation cylinder 1 is connected to a water outlet pipe 7. Quick connectors 8 are provided on both the water inlet pipe 6 and the water outlet pipe 7. The waste slag flow channel is provided with a number of first heat-conducting rings 9 and a number of second heat-conducting rings 10. The first heat-conducting rings 9 and the second heat-conducting rings 10 are arranged alternately at intervals. The outer ring surface of the first heat-conducting ring 9 is fixedly sleeved with the inner side wall of the heat-conducting cylinder 4, the inner ring surface is inverted conical and there is a gap between its bottom end and the heat-conducting pipe 5. The inner ring surface of the second heat-conducting ring 10 is fixedly sleeved with the outer side wall of the heat-conducting pipe 5, the outer ring surface is positive conical and there is a gap between its bottom end and the heat-conducting cylinder 4. The top of the outer insulation cylinder 1 corresponding to the waste slag flow channel is connected to several circumferentially spaced slag inlet branch pipes 11, and the bottom of the corresponding outer insulation cylinder 1 is connected to several circumferentially spaced slag outlet branch pipes 12. The upper part of the outer insulation cylinder 1 is coaxially provided with a top-opening slag inlet main pipe 13, and the lower part is coaxially provided with a bottom-opening slag outlet main pipe 14. The slag inlet branch pipes 11 are all connected to the circumference of the slag inlet main pipe 13 via a first inclined pipe 15, and the slag outlet branch pipes 12 are all connected to the circumference of the slag outlet main pipe 14 via a second inclined pipe 16. The roller crusher 2 is fixedly mounted above the slag inlet main pipe 13, and its bottom is detachably connected to the slag inlet main pipe 13; its bottom outlet is connected to the top of the slag inlet main pipe 13.

[0019] In use, the inlet pipe 6 can be connected to the inlet pipe (not shown in the figure) connected to the cold water source via quick connector 8, and the outlet pipe 7 can be connected to the outlet pipe (not shown in the figure) connected to the hot water storage or usage equipment. Then, the waste residue is poured into the roller crusher 2. The roller crusher 2 effectively crushes the waste residue, making it finer, increasing its heating area, and facilitating the dissipation of heat inside the waste residue, thus making it more conducive to the subsequent heat exchange between the waste residue and the cold water. Next, the refined waste residue discharged from the roller crusher 2 can first fall into the slag inlet main pipe 13, and then be distributed to each first inclined pipe 15. Through the cooperation of multiple sets of first inclined pipes 15 and slag inlet branch pipes 11, the refined waste residue can be more evenly conveyed and distributed to the top of the waste residue flow channel. Subsequently, under the guiding effect of multiple staggered first and second heat-conducting rings 9 and 10, the refined waste residue flows downward in a zigzag pattern, effectively prolonging the residence time of the waste residue in the waste residue flow channel. When the waste residue flows on the first heat-conducting ring 9, some heat is transferred to the cold water flowing through the first cold water channel via the first heat-conducting ring 9 and the heat-conducting cylinder 4, and some heat is transferred to the cold water flowing through the second cold water channel via the heat-conducting pipe 5. When the waste residue flows on the second heat-conducting ring 10, some heat is transferred to the cold water flowing through the second cold water channel via the second heat-conducting ring 10 and the heat-conducting pipe 5, and some heat is transferred to the cold water flowing through the first cold water channel via the heat-conducting cylinder 4, achieving more thorough heat transfer. Finally, the waste residue can be discharged through multiple slag discharge branch pipes 12 and, under the action of the second inclined pipe 16, converge in the slag discharge main pipe 14 and discharged to the outside. In this way, multiple heat exchange processes can be achieved on the crushed waste residue, resulting in more complete heat transfer and higher quality extraction of low-grade heat energy contained in the waste residue, making it more practical.

[0020] Furthermore, the quick connector 8 facilitates the rapid connection and disconnection of the inlet pipe 6 and outlet pipe 7 with their respective pipelines. Combined with the detachable connection between the slag inlet main pipe 13 and the bottom of the roller crusher 2, the entire outer insulation cylinder 1 can be flexibly disassembled and replaced when it becomes worn or damaged after a period of use, making it more flexible, convenient, and practical. The outer insulation cylinder 1 and inner insulation cylinder 2 can be made of readily available materials with excellent thermal insulation properties, such as rock wool board, polystyrene board, and aluminum foam board, to achieve good insulation and protection and reduce heat loss. The heat-conducting cylinder 4, heat-conducting pipe 5, first heat-conducting ring 9, and second heat-conducting ring 10 can be made of readily available materials such as copper and graphene to ensure heat transfer efficiency and improve the extraction quality of low-grade heat energy. The roller crusher 2 can utilize existing technology; its specific structure and working principle will not be detailed here.

[0021] In this embodiment, a square fixing plate 17 is fixedly sleeved on the top of the slag inlet main pipe 13, and fixing grooves 18 are provided on both the left and right sides of the fixing plate 17. On the left and right sides of the bottom of the roller crusher 2, there are vertical supports 19. On the lower part of the two supports 19, there are horizontal electric push rods 20. The telescopic ends of the two electric push rods 20 are arranged opposite each other and are fixedly connected to locking plates 21. The discharge port of the roller crusher 2 is connected to the top of the slag inlet pipe 13. The locking plates 21 are inserted into the fixing grooves 18 on the same side. When the outer insulation cylinder 1 is worn or damaged after a period of use and needs to be replaced, it is only necessary to disconnect the connection between the outer insulation cylinder 1 and the corresponding water circuit through the quick connector 8 while the machine is stopped. Then, the two electric push rods 20 are run to retract their telescopic ends, which will drive the locking plates 21 out of the corresponding fixing grooves 18. This will squeeze out the insertion and locking of the fixing plates 17. Then, the outer insulation cylinder 1 is moved away from the bottom of the roller crusher 2 in the front-back direction to complete the removal of the original outer insulation cylinder 1. Next, after taking the new outer insulation cylinder 1, move it along the front-to-back direction to below the roller crusher 2, aligning the main slag inlet pipe 13 with the outlet of the roller crusher 2 and ensuring it is in contact with the material. At this point, the locking plate 21 can be aligned with the corresponding fixing groove 18. Then, operate the two electric push rods 20 again to extend their telescopic ends, moving the locking plate 21 toward the fixing plate 17 until the locking plate 21 is inserted into the corresponding fixing groove 18, locking the fixing plate 17 in place. This completes the limiting and fixing installation of the new outer insulation cylinder 1. Finally, connect the outer insulation cylinder to the corresponding water circuit again via the quick connector 8, and it can be used again. In this way, the entire outer insulation cylinder 1 can be easily disassembled and replaced, making it more practical. The quick connector 8 can be made using existing technology. It generally includes a male and a female connector. When using it, simply pre-install the male or female connector on the inlet pipe 6 and the outlet pipe 7, and then pre-install the corresponding female or male connector on the water pipe. It can then be used to connect and work together.

[0022] In this embodiment, the locking plate 21 is adapted to the corresponding fixing groove 18 to ensure smooth insertion between the two.

[0023] In this embodiment, a gap is left between the outer insulation cylinder 1 and the inner insulation cylinder 3. The gap is vacuum-set to form a vacuum chamber 22, which can further enhance the insulation effect, reduce heat loss, and is more conducive to improving the extraction and utilization quality of low-grade heat energy contained in the waste residue.

[0024] In this embodiment, a bracket 23 is fixedly fitted onto the lower part of the outer insulation cylinder 1. Support legs 24 are fixed at the four corners of the bottom of the bracket 23, and each support leg 24 is connected to a caster 25 with a brake. When disassembling or replacing the entire outer insulation cylinder 1, the caster 25 allows for flexible movement of the outer insulation cylinder 1, making it easier to transfer and position it. Furthermore, the caster 25 with a brake function can further restrain the outer insulation cylinder 1 after it is installed, further enhancing its stability. The caster 25 with a brake function can be made using existing technology.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-grade heat source heat extracting device characterized by comprising: The application relates to a device for crushing waste slag, which comprises an outer heat-insulating cylinder, an inner heat-insulating cylinder coaxially arranged in the outer heat-insulating cylinder, a heat-conducting cylinder coaxially arranged in the inner heat-insulating cylinder, and a heat-conducting pipe coaxially arranged in the heat-conducting cylinder.

2. The low-grade heat source heat extracting device according to claim 1, characterized by, The top end of the inlet pipe is fixedly sleeved with a square fixed plate, and the left and right sides of the fixed plate are both provided with a fixed groove.

3. The low-grade heat source heat extracting device according to claim 2, characterized by, The locking plate is matched with the corresponding fixed groove.

4. The low-grade heat source heat extracting device according to claim 1, characterized by, The gap between the outer heat-insulating cylinder and the inner heat-insulating cylinder is provided with a vacuum cavity.

5. The low-grade heat source heat extracting apparatus according to claim 1, wherein The lower part of the outer heat-insulating cylinder is fixedly sleeved with a support, the bottom of the support is fixedly provided with support legs at four corners, and the bottom ends of the support legs are connected with casters provided with brakes.

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