Tube heat exchanger cleaning device

Abstract

The present application relates to heat exchanger cleaning technical field, specifically to the pipe heat exchanger cleaning device. The pipe heat exchanger cleaning device, comprising: liquid storage pipe, the inlet end of the liquid storage pipe is suitable for connecting with liquid supply component, the outlet end of the liquid storage pipe is suitable for entering the pipe heat exchanger; Cleaning component, set in the outlet end of the liquid storage pipe, including coaxially arranged multi-hole nozzle, driving blade and scraping blade, multi-hole nozzle and driving blade are spaced apart in the liquid storage pipe, and the driving blade is close to the outlet end of the liquid storage pipe, and the scraping blade is set outside the liquid storage pipe, the driving blade is suitable for rotating under the action of the cleaning fluid sprayed by multi-hole nozzle, and the scraping blade is rotated, to scrape the inner wall of the pipe heat exchanger. The present application can fully scrape the scale on the inner wall of the pipe heat exchanger, and part of the cleaning fluid directly flushes the inner wall of the pipe heat exchanger, so that the cleaning effect is better, and the heat exchange efficiency of the pipe heat exchanger is ensured.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger cleaning technology, and more specifically to a cleaning device for tubular heat exchangers. Background Technology

[0002] During heat exchanger operation, impurities such as silt, suspended solids, and microorganisms carried by the medium easily adhere to the tube walls, forming scale. When the water temperature exceeds 60℃, some impurities easily form calcium carbonate or magnesium carbonate scale, and the higher the hardness, the faster the scaling. Due to the low flow velocity inside the tubes, some impurities settle and adhere to the tube walls, accelerating the growth of microorganisms. In addition, since most heat exchangers are made of metal, they are prone to rust scale after corrosion. The formation of scale and rust on the tube walls can cause blockage of the heat exchanger, affecting safety and energy efficiency, resulting in poor heat exchange efficiency. The poor thermal conductivity of the blockage layer causes energy consumption to soar and process temperature to run out of control, failing to meet production requirements. Scale reduces the fluid flow cross-section inside the heat exchanger, causing the pump / fan load to double and electricity costs to rise. Local overheating can easily cause tube sheet deformation, weld cracking, and aggravated under-deposit corrosion, shortening equipment life. When blockage leads to pressure overpressure and medium leakage, it can also cause shutdowns or safety accidents.

[0003] To address this, existing technology proposes a heat exchanger cleaning device, comprising a gun rod and a gun head with a hollow tube cavity. The gun head and gun rod are connected by a gun head connecting pipe located on the gun head. The gun head connecting pipe has water jet holes arranged circumferentially, communicating with the hollow tube cavity of the gun rod. A water inlet is provided at the tail of the gun rod, and the water inlet is connected to a water pump. During operation, the gun head is connected to the inlet at one end of the tubular heat exchanger tube bundle. The cleaning fluid from the water pump enters the tubular heat exchanger tube bundle through the water jet holes to clean it. However, some scale or rust adheres strongly to the tube wall, and the flushing action of water alone cannot effectively separate it from the inner wall, resulting in poor cleaning effect and consequently affecting the heat exchanger's heat exchange efficiency. Summary of the Invention

[0004] This invention provides a tubular heat exchanger cleaning device to solve the problem that existing heat exchanger cleaning devices rely solely on the flushing action of water flow for cleaning, resulting in poor cleaning effect and low heat exchange efficiency.

[0005] This invention provides a tubular heat exchanger cleaning device, comprising: The liquid storage pipe has an inlet end that is suitable for connection to the liquid supply assembly and an outlet end that is suitable for entry into the tubular heat exchanger. The cleaning assembly, located at the outlet end of the liquid storage tube, includes a multi-hole nozzle, a drive blade, and a scraping blade arranged coaxially. The multi-hole nozzle and the drive blade are spaced apart inside the liquid storage tube, with the drive blade positioned close to the outlet end of the liquid storage tube. The scraping blade is located outside the liquid storage tube. The drive blade is adapted to rotate under the action of the cleaning liquid sprayed from the multi-hole nozzle, thereby driving the scraping blade to rotate and scrape the inner wall of the tubular heat exchanger.

[0006] Beneficial Effects: The tubular heat exchanger cleaning device provided by this invention allows for easy cleaning of the inner wall of the tubular heat exchanger. Simply insert the outlet end of the liquid storage pipe into the heat exchanger, and the cleaning fluid supplied by the liquid supply assembly flows from the multi-hole nozzle at a certain speed and pressure to the drive blades, causing the drive blades to rotate. Since both the multi-hole nozzle and the drive blades are located inside the liquid storage pipe, the cleaning fluid sprayed from the multi-hole nozzle primarily impacts the drive blades, converting it into kinetic energy. This results in significant kinetic energy generated by the drive blades, which in turn drives the coaxially mounted scraping blades to rotate. Consequently, the scraping blades experience relatively large forces, effectively scraping away scale buildup on the inner wall of the tubular heat exchanger. Simultaneously, some of the cleaning fluid directly flushes the inner wall of the heat exchanger, resulting in a superior cleaning effect and ensuring the heat exchange efficiency of the tubular heat exchanger.

[0007] In one alternative embodiment, the multi-hole nozzle has multiple injection holes along the circumference, and the multiple injection holes are arranged corresponding to the distal end of the drive blade.

[0008] Multiple spray holes are located on the outer periphery of the multi-hole nozzle and correspond to the far end of the drive blade. In this way, the cleaning fluid sprayed from the multi-hole nozzle directly washes the far end of the drive blade, causing it to rotate. This avoids energy waste caused by acting on the center of the drive blade, thus maximizing energy conversion and enabling the drive blade to rotate at maximum speed.

[0009] In one alternative implementation, the number of drive blades is less than the number of scraping blades.

[0010] Having fewer drive blades reduces their obstruction of the cleaning fluid, lowers the resistance to the fluid's flow, and allows the cleaning fluid to rush towards the scraping blades at a higher speed. Conversely, having more scraping blades ensures a larger contact area with the inner wall of the tubular heat exchanger, thereby guaranteeing the scraping effect.

[0011] In one alternative embodiment, the outer edge of the scraping blade is provided with a plurality of scraping teeth facing different directions.

[0012] The scraping teeth on the inner wall of the tubular heat exchanger exert greater force and achieve better removal of dirt. Furthermore, the multiple teeth with different orientations prevent some areas from being insufficiently scraped due to the unidirectional arrangement of the teeth, further improving the cleaning effect.

[0013] In one alternative embodiment, a gap is provided between the outer edge of the drive blade and the inner wall of the liquid storage tube, and the scraping teeth of the scraping blade are arranged to contact the inner wall of the tubular heat exchanger.

[0014] The gap setting allows the drive blades to rotate freely inside the liquid storage tube with low resistance; the contact setting between the scraper teeth and the inner wall of the tubular heat exchanger ensures effective scraping of dirt on the inner wall.

[0015] In one optional embodiment, the system further includes a monitoring component located at the outlet end of the liquid storage tube and a wireless transmission component located on the outer wall of the liquid storage tube. The monitoring component is connected to a terminal display via the wireless transmission component, and the terminal display is connected to the liquid supply component to adjust the cleaning fluid flow rate of the liquid supply component based on the monitoring results.

[0016] The monitoring component is used to monitor the environmental changes inside the tubular heat exchanger in real time and transmit the monitoring results to the terminal display via the wireless transmission component. The liquid supply component adjusts the cleaning fluid flow rate of the liquid supply component according to the monitoring results to strengthen or weaken the flushing and scraping intensity of the tubular heat exchanger and ensure the cleaning effect.

[0017] In one alternative implementation, the monitoring components include a temperature sensor, a humidity sensor, an ultrasonic sensor, and an image sensor located at the outlet end of the liquid storage tube.

[0018] Temperature sensors, humidity sensors, ultrasonic sensors, and image sensors are used to monitor the temperature, humidity, vibration, etc. inside the tubular heat exchanger in real time, so as to minimize the damage to the tube wall caused by the action of driving blades and scraping blades, and achieve the purpose of non-destructive cleaning.

[0019] In one optional embodiment, the liquid supply assembly includes a liquid supply tank and an inlet pipe, a pump body, and an outlet pipe connected in sequence to the liquid supply tank, with the outlet pipe connected to the inlet end of the liquid storage pipe.

[0020] The cleaning fluid in the supply tank flows into the storage pipe from the inlet pipe and outlet pipe under the action of the pump. The length of the outlet pipe can be flexibly adjusted according to the position of the storage pipe extending into the tubular heat exchanger, which has good adaptability.

[0021] In one alternative implementation, the pump body is also connected to a motor.

[0022] The motor provides the power to drive the cleaning fluid to flow through the pump body, and the pressure of the cleaning fluid can be adjusted by the operating frequency of the motor, which further ensures the cleaning effect while avoiding damage to the tubular heat exchanger.

[0023] In one alternative embodiment, the liquid storage tube includes multiple detachably connected tube bodies, each tube body having a flow regulating structure.

[0024] The multiple tubes can be disassembled and connected to accommodate tube heat exchangers of different lengths, and can be inserted into different positions within the tube heat exchanger as needed to thoroughly clean the inner wall of the tube heat exchanger; the flow regulation structure allows for flexible adjustment of the flow rate and speed of the cleaning fluid in the storage tube, thereby utilizing the high pressure of the cleaning fluid to clean the inner wall of the tube heat exchanger, resulting in a better cleaning effect. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a tubular heat exchanger cleaning device according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the cleaning component and the liquid storage pipe; Figure 3 A schematic diagram showing the connection between the monitoring component, the wireless transmission component, and the liquid storage tube; Figure 4 A schematic diagram of the monitoring components; Figure 5 This is a schematic diagram of the liquid supply assembly; Figure 6 This is a schematic diagram showing the connection between the storage pipe and the outlet pipe.

[0027] Explanation of reference numerals in the attached figures: 1. Liquid storage pipe; 101. Flow regulation structure; 2. Liquid supply assembly; 201. Liquid supply tank; 202. Liquid inlet pipe; 203. Pump body; 204. Liquid outlet pipe; 3. Cleaning assembly; 301. Multi-hole nozzle; 302. Drive blade; 303. Scraper blade; 4. Monitoring assembly; 401. Temperature sensor; 402. Humidity sensor; 403. Ultrasonic sensor; 404. Image sensor; 5. Wireless transmission assembly; 501. Wireless upload module; 502. Wireless data path; 6. Terminal display; 7. Air pump; 8. Motor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The following is combined Figures 1 to 6 Embodiments of the present invention are described.

[0030] According to an embodiment of the present invention, a tubular heat exchanger cleaning device is provided, comprising: The liquid storage pipe 1 has an inlet end adapted to be connected to the liquid supply assembly 2, and an outlet end adapted to enter the tubular heat exchanger. The cleaning assembly 3, located at the outlet end of the liquid storage pipe 1, includes a multi-hole nozzle 301, a drive blade 302, and a scraping blade 303 coaxially arranged. The multi-hole nozzle 301 and the drive blade 302 are spaced apart inside the liquid storage pipe 1, with the drive blade 302 positioned close to the outlet end of the liquid storage pipe 1. The scraping blade 303 is located outside the liquid storage pipe 1. The drive blade 302 is adapted to rotate under the action of the cleaning liquid sprayed from the multi-hole nozzle 301, thereby driving the scraping blade 303 to rotate and scrape the inner wall of the tubular heat exchanger.

[0031] refer to Figure 1 and Figure 2 In this embodiment, the liquid storage tube 1 is a spray gun. The nozzle and tail of the spray gun are the outlet and inlet ends, respectively. The gun body has a hollow structure to allow the cleaning fluid supplied by the liquid supply assembly 2 to flow. The nozzle body and nozzle have a small diameter, allowing them to enter the tubular heat exchanger and reach the designated cleaning position. This ensures that the cleaning assembly 3 at the outlet end can directly clean the position inside the tubular heat exchanger. After each cleaning, the position of the liquid storage tube 1 needs to be readjusted to ensure that the scraper blades 303 are aligned with the cleaning position. The cleaning fluid includes water and chemical solution prepared in a certain proportion, or it can be water only. The specific choice can be made according to the actual situation, and no specific restrictions are imposed here. Of course, the liquid storage tube 1 can also be an ordinary round tube, as long as its outer diameter is smaller than the inner diameter of the tubular heat exchanger and it can freely enter and exit the tubular heat exchanger.

[0032] The multi-hole nozzle 301 is formed by opening multiple through holes on a disc. The diameter of the disc is equal to the inner diameter of the liquid storage tube 1, so that it can be held tightly inside the liquid storage tube 1. Because the cleaning fluid has a certain flow rate, to ensure reliable installation, the multi-hole nozzle 301 will not fall out of the installation position due to excessive flow rate of the cleaning fluid. It can also be further fixed to the inner wall of the liquid storage tube 1 by screws or other fasteners. The multi-hole nozzle 301 is located inside the liquid storage tube 1 near the outlet end, and the drive blade 302 is located at the outlet end of the liquid storage tube 1, with a certain distance reserved between it and the multi-hole nozzle 301 to allow the cleaning fluid a certain acceleration space. The multi-hole nozzle 301 is positioned directly opposite the drive blade 302, meaning that the multi-hole nozzle 301 and the drive blade 302 are arranged parallel to each other. In this way, after the cleaning fluid passes through the multi-hole nozzle 301, it forms a swirling flow, increasing the flow velocity and directly spraying it onto the drive blade 302, causing it to rotate rapidly. Compared to placing the drive blade 302 outside the liquid storage pipe 1, most of the cleaning fluid flows towards the drive blade 302 after passing through the multi-hole nozzle 301, rather than dispersing to the surroundings. It is almost entirely converted into the kinetic energy of the drive blade 302, resulting in higher energy conversion efficiency. Furthermore, no additional drive components are required, saving costs.

[0033] Simultaneously, the scraping blade 303 is positioned outside the liquid storage pipe 1, allowing it to contact the inner wall of the tubular heat exchanger. Since the scraping blade 303 and the drive blade 302 are coaxially arranged, sharing a common shaft, the rotation of the drive blade 302 drives the scraping blade 303 to rotate as well. This allows the scraping blade 303 to simultaneously acquire greater kinetic energy, increasing the scraping force on the dirt and ensuring effective scraping. Furthermore, because the cleaning fluid can be dispersed circumferentially after passing through the drive blade 302, scraping and rinsing can occur simultaneously, further improving the cleaning effect. Additionally, the cleaning fluid forms a water film on the surfaces of the drive blade 302 and scraping blade 303 as it passes through them, reducing friction and enabling resistance-free rotation of the drive blade 302 and scraping blade 303. The drive blade 302 and scraping blade 303 are detachably connected to the liquid storage pipe 1, forming standard components that are flexible to replace and convenient to use.

[0034] Beneficial Effects: The tubular heat exchanger cleaning device provided by this invention allows for easy cleaning of the inner wall of the tubular heat exchanger. Simply insert the outlet end of the liquid storage pipe 1 into the heat exchanger, and the cleaning fluid supplied by the liquid supply assembly 2 flows from the perforated nozzle 301 to the drive blades 302 at a certain speed and pressure, causing the drive blades 302 to rotate. Since both the perforated nozzle 301 and the drive blades 302 are located within the liquid storage pipe 1, the cleaning fluid sprayed from the perforated nozzle 301 primarily impacts the drive blades 302, converting them into kinetic energy. This results in a relatively large kinetic energy generated by the drive blades 302, which in turn drives the coaxially mounted scraping blades 303 to rotate. This results in a relatively large force on the scraping blades 303, effectively scraping away scale buildup on the inner wall of the tubular heat exchanger. Simultaneously, some of the cleaning fluid directly flushes the inner wall of the tubular heat exchanger, resulting in a better cleaning effect and ensuring the heat exchange efficiency of the tubular heat exchanger.

[0035] In one embodiment, the multi-hole nozzle 301 is provided with a plurality of injection holes along the circumferential direction, and the plurality of injection holes are arranged corresponding to the distal end of the drive blade 302.

[0036] refer to Figure 2 Multiple spray holes are evenly spaced along the outer periphery of the multi-hole nozzle 301, with no spray hole in the center. This ensures that the cleaning fluid, as it flows through the nozzle 301, is linearly sprayed from the outer periphery towards the drive blade 302, acting on the distal end of the drive blade 302 and causing it to rotate rapidly. This results in a more concentrated and efficient spraying of the cleaning fluid. The multi-hole nozzle 301 is made of carbon steel tubing, which is sharp and highly wear-resistant. The spray holes are integrally formed by stamping. Alternatively, two rings of spray holes can be arranged around the circumference of the nozzle 301, or a spray hole can be placed in the center of the nozzle 301. No specific restrictions are imposed, but in this case, the pressure and flow rate of the cleaning fluid sprayed onto the drive blade 302 will be relatively reduced, and the rotation speed of the drive blade 302 will decrease.

[0037] Multiple spray holes are located on the outer periphery of the multi-hole nozzle 301 and correspond to the far end of the drive blade 302. In this way, the cleaning fluid sprayed from the multi-hole nozzle 301 directly washes the far end of the drive blade 302, causing it to rotate. This avoids energy waste caused by acting on the center of the drive blade 302, thus maximizing energy conversion and enabling the drive blade 302 to rotate at maximum speed.

[0038] In one embodiment, the number of drive blades 302 is less than the number of scraping blades 303.

[0039] In this embodiment, there are three driving blades 302 and six scraping blades 303. Of course, the number of driving blades 302 and scraping blades 303 can be flexibly adjusted according to actual needs. For example, the number of driving blades 302 can be greater than or equal to the number of scraping blades 303; no specific limitation is made here. The function of the driving blades 302 is to convert as much energy as possible from the high-speed, high-pressure cleaning fluid into kinetic energy to drive the scraping blades 303. Therefore, the number of blades should not be too many, as this would increase the resistance of the cleaning fluid flowing through the driving blades 302 and increase energy loss. Conversely, if the number of driving blades 302 is too small, the swirling effect on the cleaning fluid will be poor. Therefore, this embodiment uses three driving blades 302. The scraping blades 303 mainly remove dirt from the inner wall of the tubular heat exchanger through mechanical friction. Therefore, to ensure complete removal, a larger number of scraping blades 303 can be used, so that when the scraping blades 303 rotate, they form a complete contact coverage of the inner wall of the tubular heat exchanger at that location. Therefore, this embodiment uses six scraping blades 303. Both the drive blade 302 and the scraping blade 303 are made of metal with a certain strength, such as carbon steel, which is the same material as the multi-hole nozzle 301. On the one hand, this ensures that the drive blade 302 and the scraping blade 303 will not deform when subjected to the impact of a large pressure cleaning fluid, thus affecting the swirling and cleaning effect. On the other hand, it allows the scraping blade 303 to apply a large force when scraping dirt, ensuring the scraping effect.

[0040] The fewer the number of drive blades 302, the less obstruction they cause to the cleaning fluid, reducing the resistance to the flow of the cleaning fluid and allowing the cleaning fluid to rush toward the scraping blades 303 at a higher speed; while the larger number of scraping blades 303 ensures the contact area with the inner wall of the tubular heat exchanger, thereby ensuring the scraping effect.

[0041] In one embodiment, the outer edge of the scraping blade 303 is provided with a plurality of scraping teeth facing different directions.

[0042] The scraper teeth are integrally formed with the scraper blades 303, and are tooth-like structures with a certain angle of inclination. The different orientations of the multiple scraper teeth refer to the fact that the angle of inclination, direction, and size of the scraper teeth can all be different. In this way, when the scraper blades 303 rotate, the contact surfaces of multiple scraper teeth with the inner wall of the tubular heat exchanger will intersect and overlap, thereby removing dirt attached to any location. The scraper teeth are spaced along the outer edge of the scraper blades 303, and the number can be flexibly adjusted according to needs. The shape of the scraper teeth can be the same or different, usually triangular with a certain sharp angle, which has a greater scraping strength and a better cleaning effect on dirt. Of course, other shapes can also be used, and no specific restrictions are made here.

[0043] The scraping teeth on the inner wall of the tubular heat exchanger exert greater force and achieve better removal of dirt. Furthermore, the multiple teeth with different orientations prevent some areas from being insufficiently scraped due to the unidirectional arrangement of the teeth, further improving the cleaning effect.

[0044] In one embodiment, a gap is reserved between the outer edge of the drive blade 302 and the inner wall of the liquid storage tube 1, and the scraping teeth of the scraping blade 303 are arranged to contact the inner wall of the tubular heat exchanger.

[0045] The gap between the outer edge of the drive blade 302 and the inner wall of the liquid storage tube 1 should be such that the drive blade 302 can rotate smoothly, while allowing the cleaning fluid to flow through the drive blade 302 to the maximum extent, enabling the drive blade 302 to rotate quickly. However, this gap should not be too large to prevent the cleaning fluid from flowing directly out of the liquid storage tube 1 without passing through the drive blade 302. The diameter of the entire scraping blade 303 is equal to the inner diameter of the tubular heat exchanger, so that the scraping teeth of the scraping blade 303 can abut against the inner wall of the tubular heat exchanger, cleaning the dirt through friction and ensuring the scraping effect.

[0046] The gap setting allows the drive blade 302 to rotate freely inside the liquid storage tube 1 with low resistance; the contact setting between the scraper teeth and the inner wall of the tubular heat exchanger ensures the scraping effect on the dirt on the inner wall.

[0047] In one embodiment, the system further includes a monitoring component 4 located at the outlet end of the liquid storage tube 1 and a wireless transmission component 5 located on the outer wall of the liquid storage tube 1. The monitoring component 4 is connected to a terminal display 6 via the wireless transmission component 5. The terminal display 6 is connected to the liquid supply component 2 to adjust the cleaning fluid flow rate of the liquid supply component 2 according to the monitoring results.

[0048] refer to Figure 3 and Figure 4 The monitoring component 4 is fixed at the outlet end of the liquid storage tube 1, and the wireless transmission component 5 is fixed on the outer wall of the liquid storage tube 1, including a wireless upload module 501 and a wireless data path 502. The terminal display 6 is located outside the device and is connected to the wireless upload module 501 via the wireless data path 502, and is also connected to the liquid supply component 2. The terminal display 6 has image information monitoring, image recognition, and early warning functions. The wireless transmission component 5 is placed as close as possible to the monitoring component 4 to receive the monitoring data from the monitoring component 4 in real time and accurately. Of course, the monitoring component 4 can also be placed on the outer wall of the liquid storage tube 1. In this embodiment, the monitoring component 4 is placed at the outlet end of the liquid storage tube 1 because it is closest to the scraping blade 303, which allows for clear monitoring of the scraping process and accurate acquisition of various information at this location.

[0049] The monitoring component 4 is used to monitor the environmental changes inside the tubular heat exchanger in real time and transmit the monitoring results to the terminal display 6 via the wireless transmission component 5. The liquid supply component 2 adjusts the cleaning fluid flow rate of the liquid supply component 2 according to the monitoring results to strengthen or weaken the flushing and scraping intensity of the tubular heat exchanger and ensure the cleaning effect.

[0050] In one embodiment, the monitoring component 4 includes a temperature sensor 401, a humidity sensor 402, an ultrasonic sensor 403, and an image sensor 404 located at the outlet end of the liquid storage pipe 1.

[0051] refer to Figure 4 The image sensor 404 is located at the center of the outlet end of the liquid storage pipe 1, employing a circular structure to avoid affecting the normal spraying of the cleaning fluid. The temperature sensor 401, humidity sensor 402, and ultrasonic sensor 403 are respectively located around the outer periphery of the image sensor 404. These sensors, along with the image sensor 404, can be mounted on the outlet end of the liquid storage pipe 1 via a mounting plate. An opening in the center of the mounting plate allows the cleaning fluid to flow out. Furthermore, to ensure the monitoring effect of the image sensor 404, an air pump 7 can be installed on the mounting plate to provide high-pressure gas for purging the image sensor 404, achieving real-time cleaning and preventing the cleaning fluid from adhering to the image sensor 404 and affecting the accuracy of monitoring. The image sensor 404 can also perform real-time damage inspection of the inner wall of the tubular heat exchanger during the cleaning process. If the inner wall of the tubular heat exchanger is damaged due to excessive scratching, the pressure of the cleaning fluid can be adjusted to achieve non-destructive cleaning. In addition, the image sensor 404 can also provide a reference for whether the cleaning component 3 has accurately reached the position to be cleaned, so as to further improve the cleaning effect and efficiency. Specifically, the image sensor 404 sends the information of the inner wall of the tubular heat exchanger to the terminal display 6 in real time to determine whether the cleaning component 3 has reached the position to be cleaned.

[0052] Temperature sensor 401, humidity sensor 402, ultrasonic sensor 403 and image sensor 404 are used to monitor the temperature, humidity and vibration inside the tubular heat exchanger in real time, so as to minimize the damage to the tube wall caused by the action of drive blades 302 and scraper blades 303, and achieve the purpose of non-destructive cleaning.

[0053] In one embodiment, the liquid supply assembly 2 includes a liquid supply tank 201 and an inlet pipe 202, a pump body 203, and an outlet pipe 204 connected in sequence to the liquid supply tank 201. The outlet pipe 204 is connected to the inlet end of the liquid storage pipe 1.

[0054] refer to Figure 5 and Figure 6The liquid supply tank 201 stores the cleaning fluid for cleaning, and the bottom is connected to the inlet pipe 202. The inlet and outlet of the pump body 203 are connected to the inlet pipe 202 and the outlet pipe 204, respectively. The outlet pipe 204 is longer to allow the cleaning assembly 3 to reach different positions of the tubular heat exchanger for comprehensive cleaning. The inlet end of the storage pipe 1 is equipped with a sealing ring to ensure effective connection with the outlet pipe 204. The pump body 203 can be a plunger pump, which changes the sealing volume by the reciprocating motion of the piston in the cylinder to achieve the suction and discharge of the cleaning fluid, bringing it to the set pressure. The flow rate and pressure of the cleaning fluid are adjustable, and the equipment is easy to carry and flexible to use.

[0055] The cleaning fluid in the supply tank 201 flows into the storage pipe 1 from the inlet pipe 202 and the outlet pipe 204 under the action of the pump body 203. The length of the outlet pipe 204 can be flexibly adjusted according to the position of the storage pipe 1 extending into the tubular heat exchanger, which has good adaptability.

[0056] In one embodiment, the pump body 203 is also connected to a motor 8.

[0057] The motor 8 includes a mains frequency or variable frequency motor, a fixed power supply or a mobile power supply, which provides power to the pump body 203 to drive the pump body 203 and automatically adjust the pressure. In addition, the motor 8 can be housed in a waterproof housing to prevent cleaning fluid from leaking into the motor 8 and affecting its normal operation.

[0058] The motor 8 provides the power to drive the cleaning fluid flow to the pump body 203, and the pressure of the cleaning fluid can be adjusted by the working frequency of the motor 8, which further ensures the cleaning effect while avoiding damage to the tubular heat exchanger.

[0059] In one embodiment, the liquid storage tube 1 includes multiple tube bodies that are detachably connected, and each tube body is provided with a flow regulating structure 101.

[0060] Multiple tubes are connected and disassembled via screw threads, allowing for free assembly and length adjustment. The cleaning assembly 3 is located at the end of the first tube closest to the cleaning position. The tube bundle of the tubular heat exchanger serves as support for the liquid storage tube 1, enabling it to deliver the cleaning fluid to the cleaning position while ensuring stable delivery. Alternatively, only one liquid storage tube 1 can be used, in which case its length is not adjustable. The flow regulation structure 101 is a trigger located at the end of the tube. The trigger's frequency conversion adjusts the cleaning fluid delivery pressure in real time, thereby utilizing the impact force of the cleaning fluid to regulate the scraping speed of the scraper blades 303, meeting the requirements for cleaning dirt.

[0061] The multiple tubes can be disassembled and connected to be suitable for tube heat exchangers of different lengths, and can be inserted into different positions of the tube heat exchanger as needed, so as to thoroughly clean the inner wall of the tube heat exchanger; the flow rate and rate of the cleaning fluid in the liquid storage tube 1 can be flexibly adjusted through the flow regulation structure 101, so as to use the high pressure of the cleaning fluid to clean the inner wall of the tube heat exchanger, and the cleaning effect is good.

[0062] When it is necessary to clean the scale on the inner wall of the tubular heat exchanger, the motor 8 drives the pump body 203 to deliver the cleaning fluid in the supply tank 201 to the storage pipe 1 through the inlet pipe 202 and the outlet pipe 204. The frequency converter controlled by the trigger adjusts the pressure of the cleaning fluid in real time, so that the cleaning fluid at a certain pressure is accelerated and sprayed out through the multi-hole nozzle 301, causing the drive blade 302 to rotate, which in turn drives the scraping blade 303 to rotate, scraping and cleaning the area to be cleaned. The length of the storage pipe 1 can be flexibly adjusted according to the needs. During the cleaning process, the temperature sensor 401, humidity sensor 402, ultrasonic sensor 403 and image sensor 404 monitor the temperature, humidity, vibration and other conditions inside the tubular heat exchanger in real time, and transmit the monitoring data to the terminal display 6 through the wireless transmission component 5. After integrating and analyzing the data, the terminal display 6 determines the flow rate of the cleaning fluid that minimizes damage to the tube wall and makes timely adjustments, thereby achieving the purpose of non-destructive cleaning.

[0063] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cleaning device for a tubular heat exchanger, characterized in that, include: A liquid storage pipe (1) is provided, the inlet end of which is adapted to be connected to a liquid supply assembly (2), and the outlet end of which is adapted to enter a tubular heat exchanger. The cleaning assembly (3) is located at the outlet end of the liquid storage tube (1) and includes a multi-hole nozzle (301), a drive blade (302), and a scraping blade (303) arranged coaxially. The multi-hole nozzle (301) and the drive blade (302) are spaced apart inside the liquid storage tube (1), and the drive blade (302) is located near the outlet end of the liquid storage tube (1). The scraping blade (303) is located outside the liquid storage tube (1). The drive blade (302) is adapted to rotate under the action of the cleaning liquid sprayed by the multi-hole nozzle (301) and drive the scraping blade (303) to rotate so as to scrape the inner wall of the tubular heat exchanger.

2. The tubular heat exchanger cleaning device according to claim 1, characterized in that, The multi-hole nozzle (301) is provided with multiple injection holes along the circumference, and the multiple injection holes are corresponding to the far end of the drive blade (302).

3. The tubular heat exchanger cleaning device according to claim 2, characterized in that, The number of drive blades (302) is less than the number of scraping blades (303).

4. The tubular heat exchanger cleaning device according to claim 1, characterized in that, The outer edge of the scraping blade (303) is provided with a plurality of scraping teeth facing different directions.

5. The tubular heat exchanger cleaning device according to claim 4, characterized in that, A gap is reserved between the outer edge of the drive blade (302) and the inner wall of the liquid storage tube (1), and the scraping teeth of the scraping blade (303) are arranged in contact with the inner wall of the tubular heat exchanger.

6. The tubular heat exchanger cleaning device according to any one of claims 1 to 5, characterized in that, It also includes a monitoring component (4) located at the outlet end of the liquid storage tube (1) and a wireless transmission component (5) located on the outer wall of the liquid storage tube (1). The monitoring component (4) is connected to a terminal display (6) through the wireless transmission component (5). The terminal display (6) is connected to the liquid supply component (2) to adjust the cleaning fluid flow rate of the liquid supply component (2) according to the monitoring results.

7. The tubular heat exchanger cleaning device according to claim 6, characterized in that, The monitoring component (4) includes a temperature sensor (401), a humidity sensor (402), an ultrasonic sensor (403), and an image sensor (404) located at the outlet end of the liquid storage tube (1).

8. The tubular heat exchanger cleaning device according to claim 6, characterized in that, The liquid supply assembly (2) includes a liquid supply tank (201) and an inlet pipe (202), a pump body (203), and an outlet pipe (204) connected in sequence to the liquid supply tank (201). The outlet pipe (204) is connected to the inlet end of the liquid storage pipe (1).

9. The tubular heat exchanger cleaning device according to claim 8, characterized in that, The pump body (203) is also connected to a motor (8).

10. The tubular heat exchanger cleaning device according to any one of claims 1 to 5, characterized in that, The liquid storage tube (1) includes multiple tube bodies that are detachably connected, and each tube body is provided with a flow regulating structure (101).

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