Self-cleaning anti-blocking tubular heat exchanger

Abstract

The invention discloses a self-cleaning anti-blocking tubular heat exchanger, and relates to the technical field of heat exchangers, the self-cleaning anti-blocking tubular heat exchanger comprises a main body assembly, the main body assembly comprises a shell, a plurality of U-shaped tubes are arranged in the shell, and cleaning assemblies are arranged in the U-shaped tubes. According to the self-cleaning anti-blocking tube type heat exchanger, a winding traction rope, a first limiting block and a second limiting block are arranged on the two sides of cleaning scraping rings, the cleaning scraping rings and anti-blocking scraping rings are positioned, and therefore the multiple cleaning scraping rings can be stretched and unfolded, dirt on the inner wall of a U-shaped tube can be cleaned, and after cleaning is completed, the U-shaped tube is prevented from being blocked. When the U-shaped tube nest is cleaned, the connecting rope is wound, the anti-blocking scraping ring can be pulled, the multiple cleaning scraping rings are overlapped and collected together, the multiple cleaning scraping rings are collected in the collecting cover, influences on flowing of fluid in the U-shaped tube nest are avoided, the U-shaped tube nest does not need to be detached for cleaning in the cleaning process, and the situation that dirt in a bent tube of an existing U-shaped tube nest is difficult to automatically remove is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a self-cleaning and anti-blocking shell-and-tube heat exchanger. Background Art

[0002] The shell-and-tube heat exchanger, also known as the tube-shell heat exchanger, is a common heat exchange device and has a wide range of applications in many industrial fields such as chemical industry, electric power, food, and pharmaceutical industry. It realizes the heat exchange between hot and cold fluids through the tube bundle, and has the advantages of compact structure and relatively high heat transfer efficiency. The U-tube heat exchanger has the basic characteristics of the shell-and-tube heat exchanger, that is, it realizes the heat exchange of hot and cold fluids through the tube bundle and belongs to the category of shell-and-tube heat exchangers.

[0003] In the prior art, when the fluid flows in the tubes, impurities, particles, and dissolved substances in the fluid will gradually adhere to the inner wall of the tubes to form a fouling layer. The fouling layer will reduce the inner diameter of the tubes, increase the resistance of fluid flow, and lead to an increase in energy consumption. Moreover, it is difficult to clean the inside of the U-shaped elbows used in the U-tube heat exchanger. The traditional cleaning method requires disassembling the U-shaped elbows and flushing them with water, and it is often difficult to effectively remove the fouling in the elbows, resulting in the continuous accumulation of fouling at the elbows and eventually causing blockage, which greatly limits the service life and performance of this type of heat exchanger.

[0004] Therefore, we propose a self-cleaning and anti-blocking shell-and-tube heat exchanger to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-cleaning and anti-blocking shell-and-tube heat exchanger to solve the problem that the existing tubes are difficult to automatically remove the fouling in the elbows as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A self-cleaning and anti-blocking shell-and-tube heat exchanger, including a main body assembly. The main body assembly includes a shell. The inside of the shell includes a plurality of U-tubes. A cleaning assembly is arranged inside the U-tubes. The cleaning assembly includes a positioning ring and an anti-blocking scraping ring. Two traction ropes are fixedly connected to one side of the positioning ring. Two connecting ropes are fixedly connected to one side of the anti-blocking scraping ring. A plurality of cleaning scraping rings are arranged between the positioning ring and the anti-blocking scraping ring, and the cleaning scraping rings and the anti-blocking scraping ring are used to clean the fouling of the U-tubes. Two through holes are opened on the outer surfaces of the positioning ring and the outer surfaces of the plurality of cleaning scraping rings. The connecting ropes sequentially penetrate through the plurality of through holes. Two sliding holes are opened on the outer surfaces of the anti-blocking scraping ring and the outer surfaces of the plurality of cleaning scraping rings. The traction ropes sequentially penetrate through the plurality of sliding holes. A plurality of first limit blocks and a plurality of second limit blocks are fixedly connected to the outer surface of the traction ropes. The first limit blocks and the second limit blocks position the cleaning scraping rings and the anti-blocking scraping ring.

[0007] Preferably, a controller is provided on the outer surface of the housing. Support frames are fixedly connected to both ends of the bottom of the housing near the ends. One end of the housing is fixedly connected to an end cover through a flange. A filter block is fixedly connected to the inner wall of the end cover. A hot fluid inlet is fixedly communicated with the bottom of the housing near one end, and a hot fluid outlet is fixedly communicated with the top of the housing near the other end.

[0008] Preferably, an installation block is fixedly connected to the top of the housing. A plurality of temperature sensors are provided on the top of the installation block. A plurality of baffles are provided on the outer surfaces of the plurality of U-tubes. A tube sheet is snap-fitted between one ends of the plurality of U-tubes and is fixedly installed on the inner wall of the housing.

[0009] Preferably, a sealing groove is formed in the middle of the outer surface of the tube sheet, and a sealing strip is fixedly connected to the inner wall of the sealing groove.

[0010] Preferably, an exchange assembly is fixedly connected to one end of the housing. The exchange assembly includes a distribution chamber. A first monitoring module is provided on the top of the distribution chamber, and a second monitoring module is provided on the bottom of the distribution chamber. A cold fluid inlet is fixedly communicated with the top of the distribution chamber, and a cold fluid outlet is fixedly communicated with the bottom of the distribution chamber.

[0011] Preferably, a partition plate is fixedly connected to the inner wall of the distribution chamber. A sealing rod is fixedly connected to one side of the partition plate. The outer surface of the sealing rod is engaged with the inner wall of the sealing groove. Confluence pipes are fixedly connected to the top and bottom of the partition plate. One side of each of the two confluence pipes is closely attached to one side of the tube sheet.

[0012] Preferably, two installation holes are formed in the inner wall of the distribution chamber. A collection cover is fixedly connected to one end of each of the two installation holes. An installation ring is fixedly connected to the inner wall of each of the two collection covers. A sealing block is fixedly connected to the inner wall of each of the two installation rings. One end of each of the plurality of connecting ropes passes through one of the sealing blocks to the outside, and one end of each of the plurality of towing ropes passes through the other sealing block to the outside.

[0013] Preferably, a driving assembly is fixedly connected to the outer surface of one of the support frames. The driving assembly includes two fixed frames. Two rotation holes are formed in the outer surfaces of the two fixed frames. A positioning rotating block is rotatably connected to the inner wall of each rotation hole. A winding roller is fixedly connected between every two opposite positioning rotating blocks. One end of each of the plurality of connecting ropes is wound around the outside of one of the winding rollers, and one end of each of the plurality of towing ropes is wound around the outside of the other winding roller. A fixed plate is fixedly connected to the outer surface of one of the fixed frames. Positive and negative motors are provided on the top and bottom of the fixed plate, and the output shafts of the two positive and negative motors are respectively fixedly connected to the outer surfaces of two of the positioning rotating blocks.

[0014] It also includes: a self-cleaning and anti-blocking shell-and-tube heat exchanger system, which includes: a pressure sensing module, a flow sensing module, a signal processing module, an analysis and judgment module, a control module, a driving and execution module, and a warning module.

[0015] Preferably, the pressure sensing module is used to detect the change of pipeline pressure, and it can monitor the pressure value of the fluid in the pipeline in real time. The flow sensing module is used to measure the flow rate of the fluid in the pipeline. The signal processing module is used to process the monitored pressure data and flow rate data. The analysis and judgment module is used to analyze the pressure and flow rate data, and it can judge the blockage situation of the pipeline. The control module is used to receive the signal after judgment and analysis. The driving and execution module is used to drive the cleaning device to clean the inner wall of the pipeline. The warning module is used to send warning information to the detection personnel.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When in use, by winding the traction rope, the first limit block and the second limit block are arranged on both sides of the cleaning scraping ring, which play a positioning role for the cleaning scraping ring and the anti-blocking scraping ring, so that multiple cleaning scraping rings can be stretched and unfolded, and then the dirt on the inner wall of the U-tube can be cleaned. After the cleaning is completed, by winding the connecting rope again, the anti-blocking scraping ring will be pulled, so that multiple cleaning scraping rings are overlapped and collected together, and the multiple cleaning scraping rings are collected in the collecting cover, avoiding affecting the fluid flow inside the U-tube. During the cleaning process, it is not necessary to remove the U-tube for cleaning, avoiding the situation that the existing U-shaped tubes are difficult to automatically remove the dirt in the elbows. By installing multiple temperature sensors at different positions of the shell, the temperature at different positions inside the shell can be monitored.

[0018] 2. When in use, by injecting cold fluid from the cold fluid inlet and flowing out from the cold fluid outlet, at this time, the hot fluid is injected from the hot fluid inlet, and the hot fluid will flow through the shell interior in a wavy path through multiple baffle plates and finally flow out from the hot fluid outlet, thus completing the heat exchange operation. The filter block can absorb some impurities such as viscous substances contained in the hot fluid and has a protective effect on the interior of the heat exchanger. The sealing rod will be stuck inside the sealing groove, which can prevent the fluid in the two spaces of the distribution chamber from leaking. One end of multiple connecting ropes penetrates through the sealing block located above. The sealing block is made of soft rubber and can prevent the liquid inside the distribution chamber from leaking when not being cleaned.

[0019] 3. During use, by starting the forward and reverse motor located above, its output shaft rotates, driving the winding roller to rotate simultaneously. At this time, the positioning rotating block rotates inside the corresponding rotating hole, which can ensure the stability of the positioning rotating block during rotation, enabling the winding of multiple connecting ropes. Similarly, by starting the forward and reverse motor located below, its output shaft rotates, driving the winding roller located below to rotate, thus enabling the winding of multiple traction ropes wound on its surface.

[0020] 4. During use, the pressure sensing module is used to continuously monitor the pressure values at the inlet and outlet of the U-tube and key positions, and output the collected pressure data in the form of electrical signals. At the same time, the flow sensing module synchronously measures the flow rate of the fluid in the U-tube and also converts the flow rate data into electrical signals for output. Then, the signal processing module receives the electrical signals from the pressure sensing module and the flow sensing module, processes these raw data such as filtering, amplification, and analog-to-digital conversion, removes interference signals, and the analysis and judgment module determines the cause of the pipeline pressure change. The control module controls the operation of the equipment according to the judgment result. If the pipeline is blocked, the cleaning equipment is driven by the execution module to clean the inside of the pipeline. If there is a possibility of pipeline deformation, a reminder message is sent to the inspection personnel through the warning module, enabling timely repair of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a first perspective three-dimensional view of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0022] Figure 2 is a second perspective three-dimensional view of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0023] Figure 3 is a partially sectional three-dimensional view of the main component of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0024] Figure 4 is an unfolded three-dimensional view of the structure of the driving component of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0025] Figure 5 is a partially sectional three-dimensional view of the heat exchange component of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0026] Figure 6 is an unfolded three-dimensional view of the structure of the heat exchange component of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0027] Figure 7 is a partially sectional three-dimensional view of the cleaning component of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0028] Figure 8This is the unfolded three-dimensional view of the cleaning component part structure of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention;

[0029] Figure 9 This is the system diagram of a self-cleaning and anti-blocking shell-and-tube heat exchanger of the present invention.

[0030] In the figure:

[0031] 1. Main body component; 101. Shell; 102. Hot fluid outlet; 103. Mounting block; 104. Temperature sensor; 105. Hot fluid inlet; 106. End cover; 107. Filter block; 108. U-tube; 109. Baffle plate; 110. Tube sheet; 111. Sealing groove; 112. Sealing strip; 2. Exchange component; 201. Distribution chamber; 202. Cold fluid inlet; 203. First monitoring module; 204. Second monitoring module; 205. Collection hood; 206. Cold fluid outlet; 207. Partition plate; 208. Sealing rod; 209. Confluence pipe; 210. Mounting hole; 211. Mounting ring; 212. Sealing block; 3. Driving component; 301. Fixed frame; 302. Rotating hole; 303. Positioning rotating block; 304. Winding roller; 305. Fixed plate; 306. Reversible motor; 4. Cleaning component; 401. Positioning ring; 402. Cleaning scraping ring; 403. Anti-blocking scraping ring; 404. Perforation; 405. Sliding hole; 406. First limiting block; 407. Second limiting block; 408. Traction rope; 409. Connecting rope; 5. Controller; 6. Support frame; 7. Pressure sensing module; 8. Flow sensing module; 9. Signal processing module; 10. Analysis and judgment module; 11. Control module; 12. Driving execution module; 13. Warning module. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Refer to Figures 1-9As shown in the figure, the present invention provides a technical solution: a self-cleaning and anti-blocking shell-and-tube heat exchanger, including a main body assembly 1. The main body assembly 1 includes a housing 101. The interior of the housing 101 includes a plurality of U-tubes 108. A cleaning assembly 4 is arranged inside the U-tubes 108. The cleaning assembly 4 includes a positioning ring 401 and an anti-blocking scraping ring 403. Two traction ropes 408 are fixedly connected to one side of the positioning ring 401. Two connecting ropes 409 are fixedly connected to one side of the anti-blocking scraping ring 403. A plurality of cleaning scraping rings 402 are arranged between the positioning ring 401 and the anti-blocking scraping ring 403. The cleaning scraping ring 402 and the anti-blocking scraping ring 403 are used to clean the dirt on the U-tubes 108. Two through holes 404 are opened on the outer surfaces of the positioning ring 401 and the outer surfaces of the plurality of cleaning scraping rings 402. The connecting rope 409 sequentially passes through the plurality of through holes 404. Two sliding holes 405 are opened on the outer surfaces of the anti-blocking scraping ring 403 and the outer surfaces of the plurality of cleaning scraping rings 402. The traction rope 408 sequentially passes through the plurality of sliding holes 405. A plurality of first limit blocks 406 and a plurality of second limit blocks 407 are fixedly connected to the outer surface of the traction rope 408. The first limit block 406 and the second limit block 407 position the cleaning scraping ring 402 and the anti-blocking scraping ring 403. A controller 5 is arranged on the outer surface of the housing 101. Support frames 6 are fixedly connected to both ends of the bottom of the housing 101 close to the two ends. One end of the housing 101 is fixedly connected to an end cover 106 through a flange. A filter block 107 is fixedly connected to the inner wall of the end cover 106. A hot fluid inlet 105 is fixedly communicated with the bottom of the housing 101 close to one end. A hot fluid outlet 102 is fixedly communicated with the top of the housing 101 close to the other end. An installation block 103 is fixedly connected to the top of the housing 101. A plurality of temperature sensors 104 are arranged on the top of the installation block 103. A plurality of baffles 109 are arranged on the outer surfaces of the plurality of U-tubes 108. A tube sheet 110 is clamped and installed between one ends of the plurality of U-tubes 108. The tube sheet 110 is fixedly installed on the inner wall of the housing 101. A sealing groove 111 is opened in the middle of the outer surface of the tube sheet 110. A sealing strip 112 is fixedly connected to the inner wall of the sealing groove 111;

[0034] One end of the housing 101 is fixedly connected to an exchange component 2. The exchange component 2 includes a distribution chamber 201. A first monitoring module 203 is arranged at the top of the distribution chamber 201, and a second monitoring module 204 is arranged at the bottom of the distribution chamber 201. A cold fluid inlet 202 is fixedly communicated with the top of the distribution chamber 201, and a cold fluid outlet 206 is fixedly communicated with the bottom of the distribution chamber 201. A partition plate 207 is fixedly connected to the inner wall of the distribution chamber 201. A sealing rod 208 is fixedly connected to one side of the partition plate 207. The outer surface of the sealing rod 208 is engaged with the inner wall of the sealing groove 111. Confluence pipes 209 are fixedly connected to both the top and the bottom of the partition plate 207. One side of each of the two confluence pipes 209 is closely attached to one side of the tube plate 110. Two installation holes 210 are formed in the inner wall of the distribution chamber 201. A collection hood 205 is fixedly connected to one end of each of the two installation holes 210. Installation rings 211 are fixedly connected to the inner walls of the two collection hoods 205. Sealing blocks 212 are fixedly connected to the inner walls of the two installation rings 211. One end of a plurality of connecting ropes 409 penetrates through one of the sealing blocks 212 to the outside, and one end of a plurality of towing ropes 408 penetrates through the other sealing block 212 to the outside.

[0035] In this embodiment, during use, cold fluid is injected through the cold fluid inlet 202. The cold fluid will enter into multiple U-tubes 108 through the upper manifold 209. After flowing through the multiple U-tubes 108, it will flow out from the other outlet. The outflowing cold fluid will converge in the lower manifold 209. At this time, hot fluid is injected from the hot fluid inlet 105. The hot fluid will flow through the multiple baffles 109 in a wavy path inside the housing 101 and finally flow out from the hot fluid outlet 102, thus completing the heat exchange operation. When the hot fluid flows inside the housing 101, it will soak the filter block 107. The filter block 107 can absorb impurities such as some viscous substances contained in the hot fluid and has a protective effect on the inside of the heat exchanger. When the distribution chamber 201 is installed together with the housing 101, the sealing rod 208 will be stuck inside the sealing groove 111. At this time, the sealing strip 112 will wrap around the sealing rod 208, playing an effective sealing role, which can prevent the fluid in the two spaces of the distribution chamber 201 from leaking. One end of multiple connecting ropes 409 penetrates through the upper sealing block 212. The sealing block 212 is made of soft rubber and can prevent the liquid inside the distribution chamber 201 from leaking when not cleaned. By installing multiple temperature sensors 104 at different positions of the housing 101, the temperature at different positions inside the housing 101 can be monitored. If the temperature difference detected by the multiple temperature sensors 104 is too large, it indicates that the heat exchange effect inside the heat exchanger is not good, so that the clogged dirt can be automatically cleaned without removing the U-tubes 108. When realizing self-cleaning, the start of two forward and reverse motors 306 can drive the winding roller 304 to rotate, thereby respectively driving the connecting rope 409 and the towing rope 408 to be wound. When it is necessary to clean the dirt inside the U-tube 108, the towing rope 408 is wound. The first limit block 406 and the second limit block 407 are arranged on both sides of the cleaning scraping ring 402 and play a positioning role for the cleaning scraping ring 402 and the anti-blocking scraping ring 403, so that multiple cleaning scraping rings 402 can be stretched and unfolded, and then the dirt on the inner wall of the U-tube 108 can be cleaned. After the cleaning is completed, the connecting rope 409 is wound, which will pull the anti-blocking scraping ring 403, so that multiple cleaning scraping rings 402 are overlapped and collected together, and multiple cleaning scraping rings 402 are collected in the collection cover 205, avoiding affecting the fluid flow inside the U-tube 108. During the cleaning process, it is not necessary to remove the U-tubes 108 for cleaning, avoiding the situation that the existing U-shaped tube bundles are difficult to automatically remove the dirt in the elbows.

[0036] Embodiment Two: Figures 1-9As shown in the figure, a driving component 3 is fixedly connected to the outer surface of one of the support frames 6. The driving component 3 includes two fixing frames 301. Two rotating holes 302 are formed in the outer surfaces of the two fixing frames 301. The inner walls of each rotating hole 302 are rotatably connected with positioning rotating blocks 303. A winding roller 304 is fixedly connected between every two positioning rotating blocks 303. One ends of multiple connecting ropes 409 are wound around the outside of one of the winding rollers 304, and one ends of multiple traction ropes 408 are wound around the outside of the other winding roller 304. A fixing plate 305 is fixedly connected to the outer surface of one of the fixing frames 301. Positive and negative motors 306 are arranged at the top and bottom of the fixing plate 305. Output shafts of the two positive and negative motors 306 are respectively fixedly connected to the outer surfaces of two of the positioning rotating blocks 303.

[0037] In this embodiment, during use, by starting the positive and negative motor 306 located above, its output shaft rotates, and at the same time drives the winding roller 304 to rotate. At this time, the positioning rotating block 303 rotates inside the corresponding rotating hole 302, which can ensure the stability of the positioning rotating block 303 during rotation, so as to be able to wind up multiple connecting ropes 409. Similarly, by starting the positive and negative motor 306 located below, its output shaft rotates, thereby driving the winding roller 304 located below to rotate, then multiple traction ropes 408 wound around its surface can be wound up.

[0038] Embodiment Three: Figures 1-9 As shown in the figure, it further includes: a self-cleaning and anti-blocking shell-and-tube heat exchanger system, which includes: a pressure sensing module 7, a flow sensing module 8, a signal processing module 9, an analysis and judgment module 10, a control module 11, a driving and execution module 12, and a warning module 13. The pressure sensing module 7 is used to detect the change of pipeline pressure, and it can monitor the pressure value of the fluid in the pipeline in real time. The flow sensing module 8 is used to measure the flow rate of the fluid in the pipeline. The signal processing module 9 is used to process the monitored pressure data and flow rate data. The analysis and judgment module 10 is used to analyze the pressure and flow rate data, and it can judge the pipeline blockage situation. The control module 11 is used to receive the signal after judgment and analysis. The driving and execution module 12 is used to drive the cleaning equipment to clean the inner wall of the pipeline. The warning module 13 is used to send warning information to the detection personnel.

[0039] In this embodiment, during use, the pressure sensing module 7 is used to continuously monitor the pressure values at the inlet and outlet of the U-tube and key positions, and the collected pressure data is output in the form of electrical signals. At the same time, the flow sensing module 8 is used to synchronously measure the flow rate of the fluid in the U-tube, and the flow rate data is also converted into electrical signals for output. Then, the signal processing module 9 receives the electrical signals from the pressure sensing module 7 and the flow sensing module 8, and processes these raw data through filtering, amplification, analog-to-digital conversion, etc., removes interference signals, and converts the analog signals into digital signals for subsequent modules to analyze. Next, the analyzed data is transmitted to the analysis and judgment module 10. If the pressure sensing module 7 shows that the pressure in the pipeline has increased abnormally, while the flow sensing module 8 shows that the flow rate has decreased significantly, and the pressure difference between the inlet and outlet has increased significantly, then it is very likely that the pipeline is blocked inside. Because the blockage will hinder the normal flow of the fluid, causing the fluid to accumulate in front of the blocked part, resulting in an increase in pressure, while the flow rate through the blocked part will decrease. If the pressure sensing module 7 detects an increase in pressure, but the change in flow rate is not obvious, the analysis and judgment module 10 will judge that there may be pipeline deformation. Pipeline deformation will change the cross-sectional area of the pipeline, resulting in an increase in the flow resistance of the fluid, thereby increasing the pressure. However, since the deformation does not completely block the pipeline, the flow rate will not decrease significantly. The control module 11 controls the operation of the equipment according to the judgment result. If the pipeline is blocked, the cleaning equipment is driven by the execution module 12 to clean the inside of the pipeline. If there may be pipeline deformation, a reminder message is sent to the detection personnel through the warning module 13, so that the pipeline can be repaired in time.

[0040] Usage method and working principle of this device: During use, cold fluid is injected through the cold fluid inlet 202. The cold fluid will enter multiple U-tubes 108 through the upper manifold 209, flow through the multiple U-tubes 108 and then flow out from its other outlet. The outflowing cold fluid will converge in the lower manifold 209. At this time, hot fluid is injected from the hot fluid inlet 105. The hot fluid will flow through the multiple baffles 109 in a wavy path inside the housing 101 and finally flow out from the hot fluid outlet 102, thus completing the heat exchange operation. When the hot fluid flows inside the housing 101, it will soak the filter block 107. The filter block 107 can absorb impurities such as some viscous substances contained in the hot fluid and has a protective effect on the inside of the heat exchanger. When the distribution chamber 201 is installed together with the housing 101, the sealing rod 208 will be stuck inside the sealing groove 111. At this time, the sealing strip 112 will wrap around the sealing rod 208, playing an effective sealing role, so that the fluids in the two spaces of the distribution chamber 201 will not leak. One ends of the multiple connecting ropes 409 penetrate through the upper sealing block 212. The sealing block 212 is made of soft rubber and can prevent the liquid inside the distribution chamber 201 from leaking when not cleaned. By installing multiple temperature sensors 104 at different positions of the housing 101, the temperatures at different positions inside the housing 101 can be monitored. If the temperature differences detected by the multiple temperature sensors 104 are too large, it means that the heat exchange effect inside the heat exchanger is not good, so that the blocked dirt can be automatically cleaned without removing the U-tubes 108. When realizing self-cleaning, the start of the two reversible motors 306 can drive the winding rollers 304 to rotate, thereby driving the connecting ropes 409 and the traction ropes 408 to be wound respectively. When it is necessary to clean the dirt inside the U-tubes 108, the traction rope 408 is wound. The first limit block 406 and the second limit block 407 are arranged on both sides of the cleaning scraping ring 402 and play a positioning role for the cleaning scraping ring 402 and the anti-blocking scraping ring 403, so that the multiple cleaning scraping rings 402 can be stretched and unfolded, and then the dirt on the inner wall of the U-tubes 108 can be cleaned. After cleaning, the connecting rope 409 is wound again, which will pull the anti-blocking scraping ring 403, so that the multiple cleaning scraping rings 402 are overlapped and collected together, and the multiple cleaning scraping rings 402 are collected in the collection cover 205 to avoid affecting the fluid flow inside the U-tubes 108. During the cleaning process, the U-tubes 108 do not need to be removed for cleaning. During use, by starting the reversible motor 306 above, its output shaft rotates, and at the same time drives the winding roller 304 to rotate. At this time, the positioning rotating block 303 rotates inside the corresponding rotating hole 302, which can ensure the stability of the positioning rotating block 303 during rotation, so that the multiple connecting ropes 409 can be wound. Similarly, by starting the reversible motor 306 below, its output shaft rotates, thereby driving the lower winding roller 304 to rotate, so that the multiple traction ropes 408 wound on its surface can be wound. During use,By using the pressure sensing module 7 to monitor the pressure values at the inlet and outlet of the U-tube and key positions in real time, and output the collected pressure data in the form of electrical signals, and using the flow sensing module 8 to synchronously measure the flow rate of the fluid in the U-tube, and also convert the flow rate data into electrical signals for output. Then, the signal processing module 9 will receive the electrical signals from the pressure sensing module 7 and the flow sensing module 8, and perform processing such as filtering, amplification, and analog-to-digital conversion on these original data to remove interference signals and convert the analog signals into digital signals for subsequent modules to analyze. Next, the analyzed data will be transmitted to the analysis and judgment module 10. If the pressure sensing module 7 shows that the pressure in the pipeline has increased abnormally, while the flow sensing module 8 shows that the flow rate has decreased significantly, and the pressure difference between the inlet and outlet has increased significantly, then it is very likely that the pipeline is blocked inside. Because the blockage will hinder the normal flow of the fluid, causing the fluid to accumulate in front of the blockage, resulting in an increase in pressure, while the flow rate through the blockage will decrease. If the pressure sensing module 7 detects an increase in pressure, but the change in flow rate is not obvious, the analysis and judgment module 10 will judge that there may be pipeline deformation. Pipeline deformation will change the cross-sectional area of the pipeline, resulting in an increase in the flow resistance of the fluid, thus causing the pressure to increase. However, since the deformation does not completely block the pipeline, the flow rate will not decrease significantly. The control module 11 controls the operation of the equipment according to the judgment result. If the pipeline is blocked, the cleaning equipment will perform the cleaning operation on the inside of the pipeline through the driving and execution module 12. If there may be pipeline deformation, a reminder message will be sent to the detection personnel through the warning module 13, so that the pipeline can be repaired in time.

[0041] The wiring diagrams of the temperature sensor 104, the forward and reverse motor 306, and the controller 5 in the present invention belong to the common general knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the temperature sensor 104, the forward and reverse motor 306, and the controller 5 will not be explained in detail.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A self-cleaning anti-clogging shell-and-tube heat exchanger, comprising a main body component (1), the main body component (1) comprising a shell (101), the shell (101) comprising a plurality of U-tubes (108) inside, a cleaning component (4) being arranged inside the U-tubes (108), characterized in that: The cleaning component (4) comprises a positioning ring (401) and an anti-blocking scraper ring (403); one side of the positioning ring (401) is fixedly connected to two traction ropes (408); one side of the anti-blocking scraper ring (403) is fixedly connected to two connection ropes (409); a plurality of cleaning scraper rings (402) are arranged between the positioning ring (401) and the anti-blocking scraper ring (403); and the cleaning scraper rings (402) and the anti-blocking scraper ring (403) are used to clean dirt on the U tube (108); the outer surface of the positioning ring (401) and the outer surfaces of the plurality of cleaning scraper rings (402) are both provided with There are two through holes (404), the connecting rope (409) passes through the multiple through holes (404) in sequence, the outer surface of the anti-blocking scraper ring (403) and the outer surface of the multiple cleaning scraper rings (402) are each provided with two sliding holes (405), the traction rope (408) passes through the multiple sliding holes (405) in sequence, and the outer surface of the traction rope (408) is fixedly connected with multiple first limit blocks (406) and multiple second limit blocks (407), and the first limit blocks (406) and the second limit blocks (407) are used to position the cleaning scraper ring (402) and the anti-blocking scraper ring (403).

2. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 1 is characterized in that: A controller (5) is arranged on the outer surface of the shell (101); a support frame (6) is fixedly connected to the bottom of the shell (101) near both ends; an end cover (106) is fixedly connected to one end of the shell (101) via a flange; a filter block (107) is fixedly connected to the inner wall of the end cover (106); a hot fluid inlet (105) is fixedly connected to the bottom of the shell (101) near one end; and a hot fluid outlet (102) is fixedly connected to the top of the shell (101) near the other end.

3. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 2 is characterized in that: A mounting block (103) is fixedly connected to the top of the shell (101), a plurality of temperature sensors (104) are arranged on the top of the mounting block (103), a plurality of baffles (109) are arranged on the outer surfaces of the plurality of U-tubes (108), a tube sheet (110) is clamped and installed between one ends of the plurality of U-tubes (108), and the tube sheet (110) is fixedly installed on the inner wall of the shell (101).

4. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 3 is characterized in that: A sealing groove (111) is provided in the middle of the outer surface of the tube sheet (110), and a sealing strip (112) is fixedly connected to the inner wall of the sealing groove (111).

5. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 4 is characterized in that: One end of the shell (101) is fixedly connected to an exchange component (2), and the exchange component (2) comprises a distribution chamber (201). A first monitoring module (203) is arranged at the top of the distribution chamber (201), and a second monitoring module (204) is arranged at the bottom of the distribution chamber (201). The top of the distribution chamber (201) is fixedly connected to a cold fluid inlet (202), and the bottom of the distribution chamber (201) is fixedly connected to a cold fluid outlet (206).

6. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 5 is characterized in that: A partition plate (207) is fixedly connected to the inner wall of the distribution chamber (201), a sealing rod (208) is fixedly connected to one side of the partition plate (207), the outer surface of the sealing rod (208) is engaged with the inner wall of the sealing groove (111), and the top and bottom of the partition plate (207) are fixedly connected to a manifold (209), and one side of the two manifolds (209) is tightly attached to one side of the tube sheet (110).

7. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 6 is characterized in that: The inner wall of the distribution chamber (201) is provided with two mounting holes (210), one end of each of the two mounting holes (210) is fixedly connected to a collection cover (205), the inner walls of each of the two collection covers (205) are fixedly connected to a mounting ring (211), the inner walls of each of the two mounting rings (211) are fixedly connected to a sealing block (212), one end of each of the plurality of connecting ropes (409) passes through one of the sealing blocks (212) to the outside, and one end of each of the plurality of traction ropes (408) passes through another sealing block (212) to the outside.

8. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 7 is characterized in that: The outer surface of one of the support frames (6) is fixedly connected to a driving assembly (3), and the driving assembly (3) includes two fixed frames (301), and the outer surfaces of the two fixed frames (301) are each provided with two rotating holes (302), and the inner wall of each rotating hole (302) is rotatably connected to a positioning rotating block (303), and a winding roller (304) is fixedly connected between each two of the positioning rotating blocks (303), and one end of a plurality of the connecting ropes (409) is wound around the outside of one of the winding rollers (304), and one end of a plurality of the traction ropes (408) is wound around the outside of another winding roller (304), and the outer surface of one of the fixed frames (301) is fixedly connected to a fixing plate (305), and forward and reverse motors (306) are arranged at the top and bottom of the fixing plate (305), and the output shafts of the two forward and reverse motors (306) are respectively fixedly connected to the outer surfaces of two of the positioning rotating blocks (303).

9. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 8, characterized in that: Also includes: A self-cleaning anti-clogging shell-and-tube heat exchanger system comprises: a pressure sensing module (7), a flow sensing module (8), a signal processing module (9), an analysis and judgment module (10), a control module (11), a drive execution module (12) and a warning module (13).

10. The self-cleaning anti-clogging shell-and-tube heat exchanger according to claim 9, characterized in that: The pressure sensing module (7) is used to detect changes in pipeline pressure and can monitor the pressure value of the fluid in the pipeline in real time. The flow sensing module (8) is used to measure the flow rate of the fluid in the pipeline. The signal processing module (9) is used to process the monitored pressure data and flow data. The analysis and judgment module (10) is used to analyze the pressure and flow data and can judge the pipeline blockage situation. The control module (11) is used to receive the signal after the judgment and analysis. The drive execution module (12) is used to drive the cleaning equipment to clean the inner wall of the pipeline. The warning module (13) is used to send a warning message to the detection personnel.

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