Multi-layer fin type heat exchange device for improving flue gas waste heat utilization rate

Abstract

The multi-layer fin type heat exchange device capable of improving the flue gas waste heat utilization rate comprises a bottom plate, two symmetrically-arranged heat absorption tanks are fixedly installed on the outer wall of the top of the bottom plate, the same connecting channel is fixedly connected between the two heat absorption tanks in an inserted mode, a recovery assembly is installed in each heat absorption tank, and the recovery assemblies are connected with the same connecting channel in an inserted mode. The recovery assembly comprises two connecting pipes rotationally connected to the two ends of the heat absorption tank, distribution pipes are eccentrically fixed to the ends, close to each other, of the connecting pipes correspondingly, and a plurality of inner heat absorption pipes distributed at equal intervals are fixedly inserted between the two distribution pipes. By arranging the recovery assembly, heat in smoke can be directly absorbed, the heat absorption effect can be improved, the inner heat absorption pipes continuously keep a moving state, the inner heat absorption pipes can actively get close to the area where heat is not absorbed, the heat absorption effect is improved, and the heat absorption efficiency is improved. And the waste heat utilization rate is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically a multi-layer finned heat exchange device for improving the utilization rate of waste heat from flue gas. Background Technology

[0002] In industrial production and energy utilization processes, high-temperature flue gas often carries a large amount of heat energy. If this heat energy is not effectively utilized, it will not only lead to energy waste but may also cause thermal pollution to the environment. Therefore, waste heat recovery technology has emerged to recover and utilize this heat energy, thereby improving energy efficiency and reducing environmental pollution.

[0003] A search revealed a utility model patent with Chinese patent publication number CN213396655U, which discloses a heat exchange finned coke oven waste heat utilization device. Both the inner and outer cylinders have through-hole cavities. The outer cylinder is fitted around the outer periphery of the inner cylinder, and a closed annular cavity with an annular cross-section is formed between the outer and inner cylinders. The annular cavity is a vacuum chamber. The two ends of the outer cylinder are connected to the two ends of the inner cylinder through flanges. A heat exchange spiral tube is spirally wound and fixed on the outer periphery of the inner cylinder. The heat exchange spiral tube is located inside the annular cavity, and the lower inlet of the inner cylinder is the waste gas inlet.

[0004] The aforementioned device absorbs heat from the flue gas through a cylinder and fins, and then absorbs the heat through heat exchange tubes. However, the heat absorption tubes cannot directly contact the flue gas, which would prevent the heat from being carried away in time, thus reducing the heat absorption effect of the device and leaving room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer finned heat exchanger that improves the utilization rate of flue gas waste heat, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer finned heat exchanger for improving the utilization rate of flue gas waste heat, comprising a base plate, two symmetrically arranged heat-absorbing tanks fixedly installed on the top outer wall of the base plate, a common connecting channel fixedly inserted between the two heat-absorbing tanks, a recovery component installed inside each of the two heat-absorbing tanks, the recovery component comprising two connecting pipes rotatably connected to the two ends of the heat-absorbing tanks, a distribution pipe eccentrically fixed at the end of each connecting pipe that is close to each other, a plurality of equally spaced inner heat-absorbing tubes fixedly inserted between the two distribution pipes, and a plurality of equally spaced fins arranged on the outer circumference of each of the plurality of inner heat-absorbing tubes.

[0007] As a further preferred embodiment of this technical solution, a motor is fixedly installed on the top outer wall of the connecting channel, a second pulley is coaxially fixed at the output end of the motor, and a first pulley is coaxially fixed at each of the two connecting pipes at one end, with a belt sleeved between the second pulley and the two first pulleys.

[0008] It can directly absorb heat from flue gas, which is beneficial to improving the heat absorption effect. The internal heat absorption tube is constantly moving, which can actively approach the area where heat has not been absorbed, greatly improving the waste heat utilization rate. The heat-absorbing liquid enters the distribution pipe through the connecting pipe, and then enters multiple internal heat absorption tubes through the distribution pipe. Then it flows to the outside through the other end of the distribution pipe and the connecting pipe. When the flue gas passes through multiple internal heat absorption tubes, the heat in it is absorbed by the fin one and the internal heat absorption tubes, and then transferred to the internal liquid and carried to the outside in time. Then the motor at the top of the connecting channel is started. The output end of the motor drives the second pulley to rotate. The second pulley drives the first pulley to rotate through the belt. The first pulley drives the connecting pipe to rotate. Because the connecting pipe and the distribution pipe are eccentrically connected, the connecting pipe can drive the distribution pipe and the internal heat absorption tube to move eccentrically, so as to reach and absorb the position where heat has not been absorbed more effectively, which is beneficial to improving the recovery effect.

[0009] As a further preferred embodiment of this technical solution, two of the connecting pipes at one end are connected to the same inlet pipe via a rotary joint, and two of the connecting pipes at the other end are connected to the same outlet pipe via a rotary joint. Two reinforcing seats are fixedly connected to the top outer wall of the base plate, and the two reinforcing seats are respectively fixedly sleeved on the outside of the inlet pipe and the outlet pipe.

[0010] As a further preferred embodiment of this technical solution, each of the two heat-absorbing tanks has a number of fins on its inner circumference. Two external heat-absorbing pipes are fixedly inserted into the top outer wall of the water inlet pipe. One end of each of the two external heat-absorbing pipes is fixedly inserted into the top outer wall of the water outlet pipe, and the two external heat-absorbing pipes are respectively wrapped around the outside of the two heat-absorbing tanks.

[0011] As a further preferred embodiment of this technical solution, both heat-absorbing tanks are fitted with an insulation layer.

[0012] As a further preferred embodiment of this technical solution, both pulley one and pulley two are toothed pulleys, and the belt is a synchronous belt.

[0013] As a further preferred embodiment of this technical solution, the end face of the heat absorption tank is inclined, and the inclined surface is oriented towards the connecting channel.

[0014] This utility model provides a multi-layer finned heat exchanger to improve the utilization rate of flue gas waste heat, which has the following beneficial effects:

[0015] This invention, by incorporating a recovery component, can directly absorb heat from flue gas, thereby improving heat absorption efficiency. Furthermore, the continuously moving internal heat-absorbing tubes actively approach areas where heat has not been absorbed, significantly increasing waste heat utilization. The heat-absorbing liquid enters the distribution pipe through the connecting pipe, then flows through multiple internal heat-absorbing tubes, and finally through the other end of the distribution pipe and connecting pipe to the outside. As the flue gas passes through these internal heat-absorbing tubes, its heat is absorbed by the fins and the tubes, then transferred to the internal liquid and promptly carried to the outside. The motor at the top of the connecting channel is then activated, driving pulley two to rotate. Pulley two, via a belt, drives pulley one to rotate, which in turn drives the connecting pipe. Because the connecting pipe and distribution pipe are eccentrically connected, the connecting pipe can cause the distribution pipe and internal heat-absorbing tubes to move eccentrically, thus reaching and more effectively absorbing unabsorbed heat, further enhancing the recovery effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0018] Figure 3 This is an enlarged schematic diagram of the internal structure of the heat absorption tank of this utility model;

[0019] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] In the diagram: 1. Base plate; 2. Heat absorption tank; 3. Inlet pipe; 4. Outlet pipe; 5. External heat absorption pipe; 6. Insulation layer; 7. Reinforcing base; 8. Recovery component; 9. Connection channel; 801. Connecting pipe; 802. Distribution pipe; 803. Internal heat absorption pipe; 804. Fin 1; 805. Fin 2; 806. Pulley 1; 807. Motor; 808. Pulley 2; 809. Belt. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution as follows: Figure 2 , Figure 3 and Figure 4As shown in this embodiment, a multi-layer finned heat exchanger for improving the utilization rate of flue gas waste heat includes a base plate 1. Two symmetrically arranged heat absorption tanks 2 are fixedly installed on the top outer wall of the base plate 1. The two heat absorption tanks 2 are fixedly connected by the same connection channel 9. A recovery component 8 is installed inside each of the two heat absorption tanks 2. The recovery component 8 includes two connecting pipes 801 rotatably connected to the two ends of the heat absorption tanks 2. A distribution pipe 802 is eccentrically fixed at the end of each connecting pipe 801 that is close to each other. A plurality of equally spaced inner heat absorption pipes 803 are fixedly inserted between the two distribution pipes 802. A plurality of equally spaced fins 804 are provided on the outer circumference of the plurality of inner heat absorption pipes 803.

[0023] The flue gas enters through the opening of one heat absorption tank 2, then enters the interior of another heat absorption tank 2 through the connecting channel 9, and is then discharged outward through the outlet of the other heat absorption tank 2. During this process, the heat in the flue gas will be recovered by two sets of recovery components 8.

[0024] A motor 807 is fixedly installed on the top outer wall of the connecting channel 9. A pulley 808 is coaxially fixed at the output end of the motor 807. A pulley 806 is coaxially fixed at each of the two connecting pipes 801 at one end. A belt 809 is fitted between the pulley 808 and the two pulleys 806.

[0025] The heat-absorbing liquid enters the distribution pipe 802 through the connecting pipe 801, then enters multiple internal heat-absorbing pipes 803 through the distribution pipe 802, and then flows to the outside through the other end of the distribution pipe 802 and the connecting pipe 801. When the flue gas passes through the multiple internal heat-absorbing pipes 803, the heat in it is absorbed by the fin 804 and the internal heat-absorbing pipes 803, and then transferred to the internal liquid. It is then carried to the outside in time. Then the motor 807 at the top of the connecting channel 9 is started. The output end of the motor 807 drives the pulley 808 to rotate. The pulley 808 drives the pulley 806 to rotate through the belt 809. The pulley 806 drives the connecting pipe 801 to rotate. Because the connecting pipe 801 and the distribution pipe 802 are eccentrically connected, the connecting pipe 801 can drive the distribution pipe 802 and the internal heat-absorbing pipes 803 to move eccentrically, so as to reach and absorb the position of unabsorbed heat more effectively, which is beneficial to improving the recovery effect.

[0026] like Figure 1 and Figure 2 As shown, two connecting pipes 801 at one end are connected to the same inlet pipe 3 via a rotary joint, and two connecting pipes 801 at the other end are connected to the same outlet pipe 4 via a rotary joint. Two reinforcing seats 7 are fixedly connected to the top outer wall of the base plate 1, and the two reinforcing seats 7 are respectively fixedly sleeved on the outside of the inlet pipe 3 and the outlet pipe 4.

[0027] like Figure 2 and Figure 3As shown, each of the two heat-absorbing tanks 2 has several fins 805 on its inner circumference. Two external heat-absorbing pipes 5 are fixedly inserted into the top outer wall of the water inlet pipe 3. One end of each of the two external heat-absorbing pipes 5 is fixedly inserted into the top outer wall of the water outlet pipe 4, and the two external heat-absorbing pipes 5 are respectively wrapped around the outside of the two heat-absorbing tanks 2.

[0028] The fins 805 inside the heat absorption tank 2 can also recover heat. Combined with the disturbance of the flue gas by the fins 804, the absorption effect is better. Then, the heat is absorbed by the liquid inside the external heat absorption pipe 5 and carried to the outside.

[0029] like Figure 1 and Figure 2 As shown, both heat absorption tanks 2 are covered with an insulation layer 6, which can prevent the heat in the flue gas from being dissipated to the outside and wasted.

[0030] like Figure 2 As shown, both pulley 806 and pulley 808 are toothed pulleys, and belt 809 is a synchronous belt, which can effectively prevent slippage during transmission.

[0031] like Figure 2 and Figure 3 As shown, the end face of the heat absorption tank 2 is inclined, and the inclined surface is oriented towards the connecting channel 9. The inclined surface can guide the flue gas and prevent the flue gas from flowing poorly and affecting the subsequent entry of flue gas.

[0032] This utility model provides a multi-layer finned heat exchanger to improve the utilization rate of flue gas waste heat. The specific working principle is as follows:

[0033] When the device is working, flue gas enters through the opening of one heat-absorbing tank 2, then enters another heat-absorbing tank 2 through the connecting channel 9, and is then discharged outward through the outlet of the other heat-absorbing tank 2. During this process, the heat in the flue gas is recovered by two sets of recovery components 8. The heat-absorbing liquid enters the distribution pipe 802 through the connecting pipe 801, then enters multiple internal heat-absorbing tubes 803 through the distribution pipe 802, and then flows to the outside through the other end of the distribution pipe 802 and the connecting pipe 801. When the flue gas passes through the multiple internal heat-absorbing tubes 803, the heat in it is absorbed by the fins 804 and the internal heat-absorbing tubes 803, and then transferred to the internal liquid, which is then promptly carried to the outside. The connection is then activated. The motor 807 at the top of the channel 9 drives the pulley 808 to rotate. The pulley 808 drives the pulley 806 to rotate via the belt 809. The pulley 806 drives the connecting pipe 801 to rotate. Since the connecting pipe 801 and the distribution pipe 802 are eccentrically connected, the connecting pipe 801 can drive the distribution pipe 802 and the inner heat absorption pipe 803 to move eccentrically, thereby reaching and more effectively absorbing the unabsorbed heat, which is beneficial to improving the recovery effect. The fins 805 inside the heat absorption tank 2 can also recover heat. With the fins 804 disturbing the flue gas, the absorption effect is better. Then, the heat is absorbed by the liquid inside the outer heat absorption pipe 5 and carried to the outside.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer finned heat exchanger device for improving the utilization rate of flue gas waste heat, comprising a bottom plate (1), characterized in that: The bottom plate (1) top outer wall is fixedly installed with two symmetrical heat absorption tanks (2), two heat absorption tanks (2) are fixedly inserted with the same connecting channel (9), two heat absorption tanks (2) are internally installed with a recycling assembly (8), the recycling assembly (8) includes two connecting pipes (801) rotatably connected at both ends of the heat absorption tank (2), the connecting pipe (801) is eccentrically fixed with a distribution pipe (802) at one end, a plurality of equally spaced inner heat absorption pipes (803) are fixedly inserted between two distribution pipes (802), a plurality of inner heat absorption pipes (803) are provided with a plurality of equally spaced fins (804) on the circumferential outer wall.

2. The multi-layer finned heat exchanger device for improving flue gas waste heat utilization rate according to claim 1, characterized in that: The connecting channel (9) top outer wall is fixedly installed with a motor (807), the motor (807) output end coaxially fixed with pulley two (808), one end two connecting pipes (801) coaxially fixed with a pulley one (806), the pulley two (808) and two pulley one (806) are both set with a belt (809).

3. The multi-layer finned heat exchanger device for improving flue gas waste heat utilization rate according to claim 1, characterized in that: One end two connecting pipes (801) are connected with the same water inlet pipe (3) through the rotary joint, the other end two connecting pipes (801) are connected with the same water outlet pipe (4) through the rotary joint, the bottom plate (1) top outer wall is fixedly connected with two reinforcing seats (7), two reinforcing seats (7) are respectively fixedly sleeved on the outside of the water inlet pipe (3) and the water outlet pipe (4).

4. The multi-layer finned heat exchange device for improving flue gas waste heat utilization rate according to claim 3, characterized in that: Two heat absorption tanks (2) circumferential inner wall is provided with a plurality of fins (805), the water inlet pipe (3) top outer wall is fixedly inserted with two outer heat absorption pipes (5), two outer heat absorption pipes (5) are fixedly inserted at one end of the water outlet pipe (4) top outer wall, and two outer heat absorption pipes (5) are respectively surrounded outside two heat absorption tanks (2).

5. The multi-layer finned heat exchanger device for improving flue gas waste heat utilization rate according to claim 1, characterized in that: Two heat absorption tanks (2) are externally sleeved with a heat preservation layer (6).

6. The multi-layer finned heat exchanger device for improving flue gas waste heat utilization rate according to claim 2, characterized in that: The pulley one (806) and pulley two (808) are both toothed wheels, and the belt (809) is a synchronous belt.

7. The multi-layer finned heat exchanger device for improving flue gas waste heat utilization rate according to claim 1, characterized in that: The end face of the heat absorption tank (2) is inclined, and the inclined surface is arranged towards the connecting channel (9) direction.

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