Heat exchange type waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a heat exchange type waste heat recovery device which has the advantages of real-time monitoring, automatic ash removal, high heat transfer efficiency and convenience in maintenance. Comprising a heat exchange box which is provided with a gas inlet and a gas outlet and is used for feeding and discharging dust-containing flue gas; the heat exchange assembly is arranged in the heat exchange box and comprises a plurality of heat exchange pipes, and spiral protruding lines are arranged on the outer walls of the heat exchange pipes; the dust removal assembly is installed in the heat exchange box and comprises a movable dust removal brush, an induction module and a controller, the dust removal brush is attached to the outer wall of the heat exchange pipe, the induction module is used for monitoring the dust accumulation condition of the outer wall of the heat exchange pipe in real time, and the controller is connected with the induction module; and the driving assembly is connected with the ash removal assembly and used for driving the ash removal brush to do reciprocating motion along the heat exchange tube, and the ash removal frequency and strength can be adjusted according to feedback of the induction module.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery, and in particular to a heat exchange type waste heat recovery device. Background Technology

[0002] In industrial production processes, the generation of large amounts of waste heat, if not effectively recovered and utilized, not only leads to energy waste but may also cause environmental thermal pollution. To address this issue, heat exchange-type waste heat recovery devices are widely used, which transfer waste heat to systems or media that require thermal energy through heat exchange technology.

[0003] When processing flue gas with high dust content, dust easily accumulates on the outer wall of the heat exchange tubes, forming an insulating layer that reduces heat transfer efficiency. Currently, some existing systems address the dust accumulation problem by periodically disassembling and cleaning the heat exchange tubes manually. However, this method is not only labor-intensive and time-consuming but also causes equipment downtime, affecting production continuity. Other systems use soot blowing, employing compressed air to clean the surface of the heat exchange tubes. However, this method is ineffective at removing tightly adhered dust, and the continuous use of compressed air increases operating costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a heat exchange type waste heat recovery device with real-time monitoring and automatic dust removal, high heat transfer efficiency, and convenient maintenance.

[0005] This utility model discloses a heat exchange-type waste heat recovery device, comprising:

[0006] The heat exchange box is equipped with an air inlet and an air outlet for the entry and exit of dust-laden flue gas.

[0007] The heat exchange assembly, located inside the heat exchange box, includes multiple heat exchange tubes, the outer wall of which is provided with spiral raised textures;

[0008] The dust removal assembly, installed inside the heat exchange box, includes a movable dust removal brush, a sensing module, and a controller. The dust removal brush is in contact with the outer wall of the heat exchange tube, the sensing module is used to monitor the dust accumulation on the outer wall of the heat exchange tube in real time, and the controller is connected to the sensing module.

[0009] The drive component, connected to the cleaning component, is used to drive the cleaning brush to reciprocate along the heat exchange tube, and can adjust the cleaning frequency and force according to the feedback from the sensing module.

[0010] Furthermore, the drive assembly includes a drive motor, a screw, a slider, and a slide rail. The drive motor drives the slider to move on the slide rail via the screw, and the cleaning brush is mounted on the slider.

[0011] Furthermore, the cleaning brush and the slider are detachably connected, and an inspection port is provided on the heat exchange box.

[0012] Furthermore, a dust collection tank is provided below the heat exchange component, and a dust discharge port is provided at the bottom of the dust collection tank. A dust discharge pipe is connected to the dust discharge port, and a control valve is provided on the dust discharge pipe.

[0013] Furthermore, the heat exchange box is wrapped with multiple layers of insulation material.

[0014] Furthermore, an operation panel that is electrically connected to the controller is provided on the outside of the heat exchange box.

[0015] Furthermore, elastic support components are provided between the heat exchange tubes. These elastic support components are made of high-temperature resistant rubber and have annular corrugated grooves evenly distributed on their outer surface.

[0016] Furthermore, it also includes a pressure compensation component, installed inside the heat exchange box, including a pressure sensor and a regulating valve connected to the controller.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The dust removal component can monitor the dust accumulation on the outer wall of the heat exchange tube in real time, and the drive component drives the dust removal brush to reciprocate along the heat exchange tube. The frequency and intensity of dust removal can be adjusted according to the feedback from the sensing module. Compared with regular manual disassembly and cleaning, it does not require a lot of manpower and time, and does not affect the operation of the equipment, thus improving the continuity of production. Compared with the soot blowing method, it has a better cleaning effect on tightly attached dust, while avoiding the high operating costs caused by continuous use of compressed air. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0022] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of section AA in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model;

[0024] The attached diagram is labeled as follows: 1. Heat exchange box; 11. Air inlet; 12. Air outlet; 13. Inspection port; 2. Heat exchange assembly; 21. Heat exchange tube; 22. Elastic support component; 3. Dust removal assembly; 31. Dust removal brush; 32. Sensing module; 33. Controller; 4. Drive assembly; 41. Drive motor; 42. Screw; 43. Slider; 44. Slide rail; 5. Dust collection tank; 51. Dust discharge port; 52. Dust discharge pipe; 6. Insulation material; 7. Operation panel; 8. Pressure compensation component; 81. Pressure sensor; 82. Regulating valve. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] like Figures 1 to 4 As shown, the present invention provides a heat exchange type waste heat recovery device, comprising:

[0027] The heat exchange box 1 is equipped with an air inlet 11 and an air outlet 12 for the entry and exit of dust-laden flue gas;

[0028] The heat exchange assembly 2 is installed inside the heat exchange box 1 and includes multiple heat exchange tubes 21. The outer wall of the heat exchange tubes 21 is provided with spiral raised textures.

[0029] The dust removal assembly 3 is installed inside the heat exchange box 1 and includes a movable dust removal brush 31, a sensing module 32 and a controller 33. The dust removal brush 31 is attached to the outer wall of the heat exchange tube 21. The sensing module 32 is used to monitor the dust accumulation on the outer wall of the heat exchange tube 21 in real time. The controller 33 is connected to the sensing module 32.

[0030] The drive component 4 is connected to the cleaning component 3 and is used to drive the cleaning brush 31 to reciprocate along the heat exchange tube 21. It can also adjust the cleaning frequency and intensity according to the feedback from the sensing module 32.

[0031] The sensing module 32 works in conjunction with the controller 33 and the drive component 4 to achieve real-time monitoring and automatic dust removal. During operation, dust-laden flue gas flows into the heat exchange box 1 through the inlet 11. Inside the heat exchange box 1, through multiple heat exchange tubes 21, the waste heat in the flue gas is transferred to the system or medium that needs heat energy using heat exchange technology. Then, the flue gas is discharged from the outlet 12, completing the waste heat recovery process. The sensing module 32 monitors the dust accumulation on the outer wall of the heat exchange tubes 21 in real time and feeds back the monitoring signal to the controller 33. When the sensing module 32 detects that the dust accumulation has reached a preset level, the controller 33 sends a command to the drive component 4, which drives the cleaning brush 31 to reciprocate along the heat exchange tube 21. Since the outer wall of the heat exchange tube 21 has spiral raised textures, the cleaning brush 31 can more effectively remove the dust adhering to the outer wall of the heat exchange tube 21 during the movement. In addition, the drive component 4 can dynamically adjust the cleaning frequency and intensity of the cleaning brush 31 according to the dust accumulation information fed back by the sensing module 32 to deal with different levels of dust accumulation.

[0032] Specifically, the drive assembly 4 includes a drive motor 41, a screw 42, a slider 43, and a slide rail 44. The drive motor 41 drives the slider 43 to move on the slide rail 44 via the screw 42. The cleaning brush 31 is mounted on the slider 43. Using the drive motor 41 as a power source, after being powered on, it drives the connected screw 42 to rotate. Since the screw 42 and the slider 43 are threaded together, the rotation of the screw 42 is converted into linear movement of the slider 43 on the slide rail 44. The cleaning brush 31 moves along with the slider 43 to clean the outer wall of the heat exchange tube 21. The sensing module 32 monitors the dust accumulation on the outer wall of the heat exchange tube 21 in real time and feeds the signal back to the controller 3. 3. The controller 33 controls the operation of the drive motor 41 according to the feedback signal, thereby adjusting the cleaning frequency and force of the cleaning brush 31. Through the combination of various components in the drive assembly 4, the cleaning brush 31 is provided with stable and precise linear motion, so that the cleaning brush 31 can clean the outer wall of the heat exchange tube 21 evenly and comprehensively, effectively removing dust and ensuring the heat transfer efficiency of the heat exchange tube 21. At the same time, the structure composed of the drive motor 41, screw 42, slider 43 and slide rail 44 is mature and simple, with tight cooperation between the components and high stability. It is not easy to fail during long-term operation, ensuring the continuous and effective operation of the cleaning function and reducing equipment maintenance costs and downtime.

[0033] For ease of maintenance, the cleaning brush 31 is detachably connected to the slider 43, and an inspection port 13 is provided on the heat exchange box 1. When the cleaning brush 31 experiences wear and tear during long-term cleaning operations, affecting the cleaning effect, it can be removed from the slider 43 through the inspection port 13 for replacement, ensuring continuous and efficient cleaning. At the same time, the inspection port 13 provides a convenient passage for the inspection and maintenance of other components inside the heat exchange box 1, shortening maintenance time and improving equipment availability.

[0034] A dust collection tank 5 is provided below the heat exchange component 2. A dust discharge port 51 is provided at the bottom of the dust collection tank 5. A dust discharge pipe 52 is connected to the dust discharge port 51. A control valve is provided on the dust discharge pipe 52. When the cleaning brush 31 cleans the heat exchange tube 21, the dust brushed off will fall into the dust collection tank 5 under the action of gravity. When the dust in the dust collection tank 5 accumulates to a certain extent, the control valve on the dust discharge pipe 52 is opened. The dust will be discharged through the dust discharge port 51 and along the dust discharge pipe 52 under the action of gravity or other auxiliary power, so as to achieve centralized collection and cleaning of dust.

[0035] The heat exchange box 1 is wrapped with multiple layers of insulation material 6. Utilizing the low thermal conductivity of the insulation material 6, a thermal resistance is formed between the heat exchange box 1 and the external environment, which hinders the transfer of heat from the high-temperature heat exchange box 1 to the low-temperature external environment. This reduces the loss of waste heat during the recovery process and retains as much waste heat as possible in the heat exchange box 1 for heat exchange, thereby improving the utilization rate of waste heat recovery device and improving the overall waste heat recovery efficiency.

[0036] An operation panel 7, which is electrically connected to the controller 33, is provided on the outside of the heat exchange box 1. The operator can input commands to the controller 33 through the operation panel 7, such as setting the initial parameters of the cleaning frequency and intensity, and viewing the dust accumulation data on the outer wall of the heat exchange tube 21 monitored in real time by the sensing module 32. After receiving the command, the controller 33 adjusts the actuators such as the drive component 4 according to the preset program to control the cleaning and other related functions of the entire waste heat recovery device. At the same time, the controller 33 can also feed back information such as the operating status of the equipment to the operation panel 7 for display, so that the equipment can better adapt to different working conditions and ensure that the waste heat recovery device is always in the best operating state.

[0037] Elastic support members 22 are provided between the heat exchange tubes 21. The elastic support members 22 are made of high-temperature resistant rubber, and their outer surface is uniformly distributed with annular corrugated grooves. When the waste heat recovery device is running, the cleaning brush 31 moves back and forth along the heat exchange tubes 21, which will generate vibrations at a certain frequency. If this vibration acts on the heat exchange tubes 21 for a long time, it can easily cause the pipe connection to loosen and wear, affecting the life of the equipment. However, the elastic support members 22, with their good flexibility and resilience, can effectively absorb the vibration energy generated by the movement of the cleaning brush 31, and control the vibration amplitude within a safe range. At the same time, when the dust-laden flue gas flows at high speed and impacts the heat exchange tubes 21, the elastic support members 22 can also play a buffering role, preventing the heat exchange tubes 21 from being damaged by frequent shaking, further ensuring the stability of the heat exchange assembly 2, and providing reliable support for the stable operation of the waste heat recovery device.

[0038] Stable pressure is crucial for the normal operation of the waste heat recovery device. A pressure compensation component 8 is installed inside the heat exchange box 1, comprising a pressure sensor 81 and a regulating valve 82 connected to the controller 33. During waste heat recovery, the pressure inside the heat exchange box 1 is prone to fluctuations due to changes in flue gas flow rate, temperature, and other factors. The pressure sensor 81 monitors the pressure inside the heat exchange box 1 and feeds the pressure data back to the controller 33. When the pressure sensor 81 detects an abnormal pressure inside the heat exchange box 1, whether too high or too low, the controller 33 sends a command to the regulating valve 82 based on a preset pressure range. The regulating valve 82 adjusts its opening accordingly, restoring the pressure inside the heat exchange box 1 to the normal operating range by adjusting the gas flow rate or channel cross-sectional area. This prevents the equipment from malfunctioning due to excessively high or low pressure, such as preventing heat exchange tubes from rupturing due to excessive pressure or affecting heat exchange efficiency due to poor flue gas flow caused by excessively low pressure.

[0039] This utility model discloses a heat exchange type waste heat recovery device. During operation, the user first sets initial parameters such as cleaning frequency and intensity, as well as normal pressure range for pressure compensation, through the operation panel 7, based on actual production needs and the expected dust-laden flue gas conditions. Relevant valves are then opened, allowing dust-laden flue gas to enter the heat exchange box 1 through the inlet 11. Inside the heat exchange box 1, the dust-laden flue gas exchanges heat with the heat exchange tubes 21 of the heat exchange assembly 2, transferring waste heat to the medium within the heat exchange tubes 21, and then exits through the outlet 12. The sensing module 32 monitors the dust accumulation on the outer wall of the heat exchange tubes 21 in real time and feeds the data back to the controller 33. When the dust accumulation reaches a set level, the controller 33 activates the drive motor 41 of the drive assembly 4. The drive motor 41 drives the screw 42 to rotate, causing the slider 43 to move on the slide rail 44. The cleaning brush 31 mounted on the slider 43 then reciprocates along the heat exchange tubes 21, cleaning the outer wall of the heat exchange tubes 21. The drive component 4 dynamically adjusts the cleaning frequency and intensity of the cleaning brush 31 based on the dust accumulation feedback from the sensing module 32. The pressure sensor 81 monitors the pressure inside the heat exchange box 1 in real time and feeds the pressure data back to the controller 33. If the pressure exceeds the preset range, the controller 33 controls the regulating valve 82 to adjust the opening to restore the pressure inside the heat exchange box 1 to the normal working range. The dust brushed off by the cleaning brush 31 falls into the dust collection tank 5 below the heat exchange component 2 under the action of gravity. When the dust in the dust collection tank 5 accumulates to a certain extent, the operator can open the control valve on the dust discharge pipe 52 through the operation panel 7 or manually to discharge the dust through the dust discharge port 51 and the dust discharge pipe 52. The operator can view the operating parameters of the equipment in real time through the operation panel 7, such as dust accumulation monitoring data, working status of the cleaning system, pressure data, etc. If abnormal data is found, the parameters can be adjusted or other treatment measures can be taken in a timely manner.

[0040] The heat exchange type waste heat recovery device of this utility model can be installed, connected or set in a common mechanical way, and can be implemented as long as it can achieve its beneficial effect.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heat exchange type waste heat recovery device, characterized in that, include: The heat exchange box (1) is provided with an air inlet (11) and an air outlet (12) for the entry and exit of dust-laden flue gas; A heat exchange assembly (2) is disposed inside the heat exchange box (1) and includes multiple heat exchange tubes (21). The outer wall of the heat exchange tubes (21) is provided with spiral raised textures. The dust removal assembly (3) is installed inside the heat exchange box (1) and includes a movable dust removal brush (31), a sensing module (32) and a controller (33). The dust removal brush (31) is attached to the outer wall of the heat exchange tube (21). The sensing module (32) is used to monitor the dust accumulation on the outer wall of the heat exchange tube (21) in real time. The controller (33) is connected to the sensing module (32). The drive component (4) is connected to the cleaning component (3) and is used to drive the cleaning brush (31) to reciprocate along the heat exchange tube (21), and can adjust the cleaning frequency and intensity according to the feedback from the sensing module (32).

2. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, The drive assembly (4) includes a drive motor (41), a screw (42), a slider (43) and a slide rail (44). The drive motor (41) drives the slider (43) to move on the slide rail (44) via the screw (42). The cleaning brush (31) is mounted on the slider (43).

3. The heat exchange type waste heat recovery device as described in claim 2, characterized in that, The cleaning brush (31) is detachably connected to the slider (43), and the heat exchange box (1) is provided with an inspection port (13).

4. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, The heat exchange component (2) is provided with a dust collection tank (5) below it. The bottom of the dust collection tank (5) is provided with a dust discharge port (51). A dust discharge pipe (52) is connected to the dust discharge port (51). A control valve is provided on the dust discharge pipe (52).

5. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, The heat exchange box (1) is wrapped with multiple layers of insulation material (6).

6. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, The heat exchange box (1) is provided with an operation panel (7) that is electrically connected to the controller (33) on the outside.

7. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, An elastic support (22) is provided between the heat exchange tubes (21). The elastic support (22) is made of high-temperature resistant rubber and has annular corrugated grooves evenly distributed on its outer surface.

8. The heat exchange type waste heat recovery device as described in claim 1, characterized in that, It also includes a pressure compensation component (8), which is installed inside the heat exchange box (1) and includes a pressure sensor (81) and a regulating valve (82) connected to the controller (33).

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