Shell-and-tube heat exchanger with easy maintenance

Abstract

The application relates to the technical field of shell-and-tube heat exchangers, and particularly discloses a shell-and-tube heat exchanger convenient to maintain, the side surface of a main body is fixedly connected with a support, one end of the main body is fixedly connected with a tube box one, and the side surface of the tube box one is fixedly connected with a fluid interface. The shell-and-tube heat exchanger convenient to maintain is provided with a heat transfer mechanism, the moving sleeve is driven to move on the connecting shaft through the continuous impact force of the cold fluid, moves following the impact force of the cold fluid, and is driven to move in contact with the inner wall of the heat transfer pipe through the connecting frame and the connecting plate. When the cold fluid flows, a boundary layer is formed on the inner wall of the heat transfer pipe, which hinders heat transfer. The scraper moves along the inner wall of the heat transfer pipe under the impact force of the cold fluid, can destroy the boundary layer, makes heat exchange between the cold fluid and the pipe wall more sufficient, strengthens the heat transfer process, and improves the heat transfer efficiency of the heat exchanger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shell-and-tube heat exchanger, in particular to a shell-and-tube heat exchanger convenient to maintain. BACKGROUND

[0002] The shell-and-tube heat exchanger is also called the tube heat exchanger. It is a wall surface of a tube bundle enclosed in a shell as a heat transfer surface. The heat exchanger is simple in structure, low in cost, wide in flow cross section, and easy to clean scale. However, it has low heat transfer coefficient and large floor area. It can be manufactured by various structural materials (mainly metal materials) and can be used at high temperature and high pressure. It is the most widely used type. Based on the heat conduction principle, heat exchange is carried out by using two fluids with different temperatures inside and outside the tube bundle. The hot fluid flows in the tube or shell, and the cold fluid flows in the other. Heat is transferred from the hot fluid to the cold fluid through the tube wall, so that the temperature of the hot fluid is reduced, and the temperature of the cold fluid is increased, so that heat transfer and exchange are realized, and the purpose of heating or cooling the fluid is achieved.

[0003] When cleaning the heat transfer pipe inside the shell-and-tube heat exchanger, the heat transfer pipe needs to be disassembled for cleaning the inside of the heat transfer pipe, or the device needs to be stopped to add cleaning agent to the inside of the heat transfer pipe for cleaning work. The above methods bring great inconvenience to maintenance work and waste a lot of equipment maintenance time. SUMMARY

[0004] To achieve the above object, the present application is realized by the following technical scheme: a shell-and-tube heat exchanger convenient to maintain, comprising:

[0005] A main body, a support is fixedly connected to the side of the main body, a pipe box one is fixedly connected to one end of the main body, a fluid interface is fixedly connected to the side of the pipe box one, a connecting part is fixedly connected to the end of the main body away from the pipe box one, a water outlet is fixedly connected to the side of the connecting part, a water inlet is fixedly connected to the side of the main body away from the support, and a blowdown port is fixedly connected to the side of the main body away from the water inlet.

[0006] A heat transfer component for transporting and guiding the cold liquid, the side of the heat transfer component is fixedly connected to the inside of the main body.

[0007] The heat transfer component comprises a baffle, the side of the baffle is fixedly connected to the inside of the main body, heat transfer mechanisms are uniformly arranged on the tube plate, the two ends of the heat transfer mechanism are fixedly connected to the tube plate, and the side of the tube plate is fixedly connected to the inside of the main body.

[0008] The heat transfer mechanism comprises a heat transfer pipe, both ends of the heat transfer pipe are fixedly connected with the inner side of the tube plate, the side surface of the heat transfer pipe is fixedly connected with the inner side of the baffle, the inner wall of the heat transfer pipe is fixedly connected with a limiting frame, the side surface of the limiting frame is fixedly connected with a connecting shaft, the end of the connecting shaft away from the limiting frame is fixedly connected with a buffer assembly, the side surface of the buffer assembly is fixedly connected with the inner wall of the heat transfer pipe, the side of the limiting frame close to the connecting shaft is fixedly connected with a first spring, the other end of the first spring is fixedly connected with a moving assembly, and the inner side of the moving assembly is slidably connected with the side surface of the connecting shaft;

[0009] Preferably, the moving assembly comprises a moving sleeve, the inner side of the moving sleeve is slidably connected with the side surface of the connecting shaft, both sides of the moving sleeve are fixedly connected with connecting frames, the connecting frames away from both sides of the moving sleeve are reversely provided with connecting plates, the connecting frames are fixedly connected with the connecting plates, the inner side of the connecting plate away from the limiting frame is fixedly connected with the first spring, the inner side of the other connecting plate is fixedly connected with a spoiler, the side of the connecting plate away from the connecting plate is fixedly connected with a scraper, and the side of the scraper away from the connecting plate is in contact with the inner wall of the heat transfer pipe.

[0010] Preferably, the buffer assembly comprises a sliding sleeve, the inner side of the sliding sleeve is slidably connected with the side surface of the connecting shaft, one side of the sliding sleeve is fixedly connected with a sliding frame one, the inner side of the sliding frame one is slidably connected with the side surface of the connecting shaft, the side surface of the sliding frame one is fixedly connected with a buffer rod, the end of the buffer rod away from the sliding frame one is slidably connected with a sliding frame two, the inner side of the sliding frame two is fixedly connected with the end of the connecting shaft away from the limiting frame, the buffer rod is sleeved with a second spring, one end of the second spring is fixedly connected with the sliding frame one, the other end of the second spring is fixedly connected with the sliding frame two, one side of the sliding sleeve away from the sliding frame one is fixedly connected with a buffer plate one, the side of the buffer plate one away from the sliding sleeve is fixedly connected with a buffer housing, the side of the buffer housing away from the buffer plate one is fixedly connected with a buffer plate two, the side surface of the buffer plate two is slidably connected with the side surface of the connecting shaft, and the side surfaces of the buffer housing are uniformly provided with accommodating grooves.

[0011] Preferably, the connecting component comprises a pipe box two, the inner side of the pipe box two is fixedly connected with the side surface of the water outlet, the side surface of the pipe box two is fixedly connected with the side of the main body away from the pipe box one, the inner side of the pipe box two is rotatably connected with a cleaning mechanism, the side surface of the cleaning mechanism is fixedly connected with a paddle, the side of the paddle away from the cleaning mechanism is rotatably connected with the side of the tube plate away from the heat transfer pipe, the side surface of the cleaning mechanism is fixedly connected with a collecting mechanism, the side surface of the pipe box two is fixedly connected with a motor, and the output end of the motor is fixedly connected with the side of the cleaning mechanism away from the paddle.

[0012] Preferably, the cleaning mechanism comprises a rotating rod, one end of the rotating rod is rotatably connected with the inner side of the tube box two, the other end of the rotating rod is fixedly connected with the side of the paddle, the side of the rotating rod is uniformly provided with a rotating frame, the side of the rotating frame is fixedly connected with the inner side of the rotating rod, the side, away from the rotating rod, of the rotating frame is slidably connected with a cleaning brush, both sides of the rotating frame are fixedly connected with a fixed block, both sides of the cleaning brush are fixedly connected with a fixed plate, the top of the fixed plate is slidably connected with a sliding rod, one end, away from the fixed plate, of the sliding rod is fixedly connected with the inner side of the fixed block, a third spring is sleeved on the sliding rod, one end of the third spring is fixedly connected with the fixed plate, the other end of the third spring is fixedly connected with the side of the fixed block.

[0013] Preferably, the collecting mechanism comprises a collecting shell, the collecting shell is symmetrically arranged on both sides of the rotating rod, a plurality of circular holes are uniformly arranged on the side, away from the baffle, of the collecting shell, the inner side of the collecting shell is fixedly connected with the side of the rotating rod, a connecting shaft is slidably connected with the inner side of the collecting shell, the side, away from the inner wall of the collecting shell, of the connecting shaft is fixedly connected with a baffle, a plurality of circular holes are uniformly arranged on the side of the baffle, the side of the connecting shaft is fixedly connected with a contact plate, the side of the contact plate is in contact with a bending plate one, a fourth spring is sleeved on the connecting shaft, one end of the fourth spring is fixedly connected with the inner wall of the collecting shell, the other end of the fourth spring is fixedly connected with the side of the contact plate, the inner side of the collecting shell is fixedly connected with the bending plate one, the side, away from the bending plate one, of the collecting shell is fixedly connected with a bending plate two.

[0014] The application provides a shell-and-tube heat exchanger convenient to maintain.

[0015] 1. The shell-and-tube heat exchanger convenient to maintain is provided with a heat transfer mechanism, the continuous impact force of the cold fluid is used to make the moving sleeve move on the connecting shaft and move following the impact force of the cold fluid, so that the moving sleeve moves through the connecting frame and the connecting plate, drives the scraper to move in contact with the inner wall of the heat transfer pipe, and the boundary layer is formed on the inner wall of the heat transfer pipe when the cold fluid flows, which hinders heat transfer; the scraper moves along the inner wall of the heat transfer pipe under the action of the impact force of the cold fluid, can destroy the boundary layer, makes the heat exchange between the cold fluid and the pipe wall more sufficient, strengthens the heat transfer process, and improves the heat transfer efficiency of the heat exchanger.

[0016] 2. The shell-and-tube heat exchanger convenient to maintain is provided with two connecting plates, and the two connecting plates are oppositely arranged, so that the normal passing speed of the cold fluid is not interfered when the cold fluid passes through the heat transfer pipe. The two connecting plates are oppositely arranged, so that the interference of the two connecting plates to the cold fluid is counteracted or weakened. When the cold fluid passes through the heat transfer pipe, the local flow rate is not too high or too low due to the blocking of one side of the connecting plate, the flow field is not disturbed, so that the cold fluid can pass through the heat transfer pipe at a relatively stable and uniform speed, and the normal heat transfer efficiency of the heat exchanger is maintained.

[0017] 3. The shell-and-tube heat exchanger convenient to maintain is provided with a spoiler, and the spoiler is obliquely arranged in one side of the connecting plate. The obliquely arranged spoiler can make the cold fluid generate a spiral flow track in the flowing process, and increase the disturbance degree of the fluid. The spiral flow can further destroy the boundary layer of the inner wall of the heat transfer pipe, so that the heat exchange between the cold fluid and the pipe wall is more sufficient, and the heat transfer efficiency is improved. The spiral flow of the cold fluid guided by the spoiler can strengthen the scouring effect of the fluid on the inner wall of the heat transfer pipe, and can also make the contact between the scraper and the pipe wall more uniform and effective during the movement of the scraper. The spiral flow of the fluid can take away the dirt and impurities scraped by the scraper more quickly, improve the self-cleaning ability of the heat exchanger, and further ensure the heat transfer effect and the stable operation of the equipment.

[0018] 4. The shell-and-tube heat exchanger convenient to maintain is provided with a cleaning mechanism. When the rotating frame drives the cleaning brush to rotate, the rotating rod can be used as the center to clean the inner wall of the second tube box in 360 degrees, so that the cleaning dead angle is avoided. Compared with manual cleaning, this method can clean each part of the inner wall of the second tube box more quickly and more comprehensively, greatly improves the cleaning efficiency and the equipment maintenance time, and the rotating cleaning brush can generate a certain friction force and pressure when contacting the inner wall of the second tube box, so that the stubborn dirt and deposits can be effectively removed. The cleaning method under the action of the mechanical force can more thoroughly remove the impurities on the second tube box than some simple flushing or wiping methods, so that the inner wall of the second tube box is restored to be clean and smooth, and the heat transfer efficiency and the operation performance of the shell-and-tube heat exchanger are improved.

[0019] 5. The shell-and-tube heat exchanger convenient to maintain is provided with a bending plate one and a bending plate two. The bending plate one and the bending plate two are respectively arranged on the inner side of the collecting shell, and the bending plate one is arranged close to the baffle. When the baffle is impacted and moves towards the collecting shell, the baffle drives the contact plate to separate from the bending plate one and contact the bending plate two, so that the impurities are guided to gather on the inner side of the collecting shell, the impurities are collected in a targeted manner, the impurities are not dispersed in the second tube box, and the subsequent unified treatment of the impurities is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1Structure diagram of the shell-and-tube heat exchanger of the present application for easy maintenance;

[0021] Figure 2 Sectional view of the present application;

[0022] Figure 3 Structure diagram of the heat transfer component of the present application;

[0023] Figure 4 Structure diagram of the heat transfer mechanism of the present application;

[0024] Figure 5 Structure diagram of the moving assembly of the present application;

[0025] Figure 6 Structure diagram of the buffer assembly of the present application;

[0026] Figure 7 Structure diagram of the connecting component of the present application;

[0027] Figure 8 Structure diagram of the cleaning mechanism of the present application;

[0028] Figure 9 Structure diagram of the collecting mechanism of the present application.

[0029] In the figure: 1, main body; 2, support; 3, tube box one; 4, fluid interface; 5, water inlet; 6, sewage outlet; 7, connecting component; 71, tube box two; 72, motor; 73, paddle; 74, cleaning mechanism; 741, rotating rod; 742, rotating frame; 743, fixed block; 744, cleaning brush; 745, fixed plate; 746, sliding rod; 747, third spring; 75, collecting mechanism; 751, collecting shell; 752, connecting shaft; 753, fourth spring; 754, baffle; 755, contact plate; 756, bent plate one; 757, bent plate two; 8, water outlet; 9, heat transfer component; 91, tube plate; 92, baffle; 93, heat transfer mechanism; 931, heat transfer pipe; 932, limiting frame; 933, buffer assembly; 9331, sliding sleeve; 9332, sliding frame one; 9333, buffer rod; 9334, sliding frame two; 9335, second spring; 9336, buffer plate one; 9337, buffer shell; 9338, accommodation groove; 9339, buffer plate two; 934, connecting shaft; 935, first spring; 936, moving assembly; 9361, moving sleeve; 9362, connecting frame; 9363, connecting plate; 9364, spoiler; 9365, scraper. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0031] Referring to Figures 1-6 The present application provides a technical solution: a shell-and-tube heat exchanger convenient to maintain.

[0032] Referring to Figures 1-6 The present application provides a technical solution: comprising:

[0033] The main body 1 is fixedly connected with the support 2 on the side surface, and the pipe box one 3 is fixedly connected with the main body 1 at one end. The fluid interface 4 is fixedly connected with the pipe box one 3 on the side surface, and the connecting component 7 is fixedly connected with the main body 1 away from the pipe box one 3 at one end. The water outlet 8 is fixedly connected with the connecting component 7 on the side surface, and the water inlet 5 is fixedly connected with the main body 1 away from the support 2 on the side. The blowdown port 6 is fixedly connected with the main body 1 away from the water inlet 5 on the side.

[0034] The heat transfer component 9 is used for guiding the cold liquid, and the side surface of the heat transfer component 9 is fixedly connected with the inner side of the main body 1.

[0035] Referring to Figure 3 The heat transfer component 9 comprises the baffle 92, and the side surface of the baffle 92 is fixedly connected with the inner side of the main body 1. The tube plate 91 is uniformly provided with the heat transfer mechanism 93, and the two ends of the heat transfer mechanism 93 are fixedly connected with the tube plate 91. The side surface of the tube plate 91 is fixedly connected with the inner side of the main body 1. The cold fluid first enters the pipe box one 3 through the fluid interface 4, and then enters the heat transfer mechanism 93 through the pipe passage inlet in the pipe box one 3. The distributor is usually designed at the pipe passage inlet of the pipe box one 3, which uniformly distributes the entering cold fluid into each heat transfer mechanism 93, so that each heat transfer mechanism 93 can have a suitable flow of cold fluid, avoiding the problem of poor local heat exchange effect caused by uneven flow.

[0036] Referring to Figure 4The heat transfer mechanism 93 comprises a heat transfer pipe 931, both ends of the heat transfer pipe 931 are fixedly connected with the inner side of the tube plate 91, the side of the heat transfer pipe 931 is fixedly connected with the inner side of the baffle plate 92, the inner wall of the heat transfer pipe 931 is fixedly connected with a limiting frame 932, the side of the limiting frame 932 is fixedly connected with a connecting shaft 934, the end of the connecting shaft 934 away from the limiting frame 932 is fixedly connected with a buffer assembly 933, the side of the buffer assembly 933 is fixedly connected with the inner wall of the heat transfer pipe 931, the side of the limiting frame 932 close to the connecting shaft 934 is fixedly connected with a first spring 935, the other end of the first spring 935 is fixedly connected with a moving assembly 936, the inner side of the moving assembly 936 is slidingly connected with the side of the connecting shaft 934; at the same time, the cold fluid continuously enters the heat transfer pipe 931, and the cold fluid continuously impacts, so that the moving assembly 936 moves on the connecting shaft 934 and follows the impact of the cold fluid, and the first spring 935 is pulled, so that the inner wall of the heat transfer pipe 931 can be cleaned by the moving assembly 936 when the cold fluid passes through the heat transfer pipe 931;

[0037] Please refer to Figure 5 The moving assembly 936 comprises a moving sleeve 9361, the inner side of the moving sleeve 9361 is slidingly connected with the side of the connecting shaft 934, both sides of the moving sleeve 9361 are fixedly connected with a connecting frame 9362, both sides of the connecting frame 9362 away from the moving sleeve 9361 are reversely provided with a connecting plate 9363, the connecting frame 9362 is fixedly connected with the connecting plate 9363, the inner side of the connecting plate 9363 away from the limiting frame 932 is fixedly connected with the first spring 935, the inner side of the other connecting plate 9363 is fixedly connected with a spoiler 9364, the side of the connecting plate 9363 away from the connecting plate 9363 is fixedly connected with a scraper 9365, and the side of the scraper 9365 away from the connecting plate 9363 is in contact with the inner wall of the heat transfer pipe 931; the moving sleeve 9361 moves on the connecting shaft 934 and follows the impact of the cold fluid, so that the moving sleeve 9361 drives the scraper 9365 to move in contact with the inner wall of the heat transfer pipe 931 through the connecting frame 9362 and the connecting plate 9363, the boundary layer is formed on the inner wall of the heat transfer pipe 931 when the cold fluid flows, which hinders heat transfer, the scraper 9365 moves along the inner wall of the heat transfer pipe 931 under the impact of the cold fluid, can destroy the boundary layer, make the heat exchange between the cold fluid and the pipe wall more sufficient, strengthen the heat transfer process, and improve the heat transfer efficiency of the heat exchanger;

[0038] Please refer to Figure 6The buffer assembly 933 comprises a sliding sleeve 9331, the inner side of the sliding sleeve 9331 is in sliding connection with the side of the connecting shaft 934, one side of the sliding sleeve 9331 is fixedly connected with a sliding frame one 9332, the inner side of the sliding frame one 9332 is in sliding connection with the side of the connecting shaft 934, the side of the sliding frame one 9332 is fixedly connected with a buffer rod 9333, the end, away from the sliding frame one 9332, of the buffer rod 9333 is slidingly connected with a sliding frame two 9334, the inner side of the sliding frame two 9334 is fixedly connected with the end, away from the limiting frame 932, of the connecting shaft 934, the buffer rod 9333 is sleeved with a second spring 9335, one end of the second spring 9335 is fixedly connected with the sliding frame one 9332, the other end of the second spring 9335 is fixedly connected with the sliding frame two 9334, one side of the sliding sleeve 9331, away from the sliding frame one 9332, is fixedly connected with a buffer plate one 9336, one side of the buffer plate one 9336, away from the sliding sleeve 9331, is fixedly connected with a buffer shell 9337, one side of the buffer shell 9337, away from the buffer plate one 9336, is fixedly connected with a buffer plate two 9339, the side of the buffer plate two 9339 is in sliding connection with the side of the connecting shaft 934, and the side of the buffer shell 9337 is uniformly provided with a gap slot 9338; when the cold fluid continuously enters the heat transfer pipe 931, when the continuous impact force of the cold fluid is smaller than the tensile force of the first spring 935, the first spring 935 is reset, the moving sleeve 9361 drives the two side scrapers 9365 to reset and move in the heat transfer pipe 931, the connecting frame 9362, provided with the spoiler 9364, on the side, close to the moving sleeve 9361, is in extrusion contact with the side of the buffer plate two 9339, the buffer plate two 9339 drives the buffer plate one 9336 through the buffer shell 9337, the sliding frame one 9332 is moved to the sliding frame two 9334 through the sliding sleeve 9331, the buffer rod 9333 is moved on the sliding frame two 9334 through the sliding frame one 9332, and the second spring 9335 is buffered and extruded, so that the impact force between the scraper 9365 and the sliding frame two 9334 is not too large when the scraper 9365 is reset and moved by the first spring 935, and then the connection between the equipment components is loose or the sealing is invalid, so that the leakage hidden danger caused by the loose components or the damaged sealing is eliminated, the cold fluid leakage problem in the running process of the heat exchanger is avoided, and the safe operation of the equipment is ensured;

[0039] Please refer to Figures 7-9 The present application provides a technical solution:

[0040] Please refer to Figure 7The connecting component 7 comprises a tube box two 71, the inner side of the tube box two 71 is fixedly connected with the side of the water outlet 8, the side of the tube box two 71 is fixedly connected with the side of the main body 1 away from the tube box one 3, the inner side of the tube box two 71 is rotatably connected with a cleaning mechanism 74, the side of the cleaning mechanism 74 is fixedly connected with a paddle 73, the side of the paddle 73 away from the cleaning mechanism 74 is rotatably connected with the side of the tube plate 91 away from the heat transfer tube 931, the side of the cleaning mechanism 74 is fixedly connected with a collecting mechanism 75, the side of the tube box two 71 is fixedly connected with a motor 72, and the output end of the motor 72 is fixedly connected with the side of the cleaning mechanism 74 away from the paddle 73; after the cold fluid continuously passes through the heat transfer tube 931 after heat exchange and enters the connecting component 7, the paddle 73 is impacted by the continuous impact force of the fluid, so that the paddle 73 drives the cleaning mechanism 74 to rotate in the tube box two 71, and the cleaning mechanism 74 cleans the inner wall of the tube box two 71; when the inner wall of the tube box two 71 needs to be cleaned, and the impact force of the fluid on the paddle 73 is too small, the motor 72 is started, the cleaning mechanism 74 is driven to rotate in the tube box two 71 by the output end of the motor 72, and the collecting mechanism 75 collects impurities in the fluid under the action of centrifugal force;

[0041] Please refer to Figure 8 The cleaning mechanism 74 comprises a rotating rod 741, one end of the rotating rod 741 is rotatably connected with the inner side of the tube box two 71, the other end of the rotating rod 741 is fixedly connected with the side of the paddle 73, the side of the rotating rod 741 is uniformly provided with a rotating frame 742, the side of the rotating frame 742 is fixedly connected with the inner side of the rotating rod 741, the side of the rotating frame 742 away from the rotating rod 741 is slidably connected with a cleaning brush 744, both sides of the rotating frame 742 are fixedly connected with a fixed block 743, both sides of the cleaning brush 744 are fixedly connected with a fixed plate 745, the top of the fixed plate 745 is slidably connected with a sliding rod 746, one end of the sliding rod 746 away from the fixed plate 745 is fixedly connected with the inner side of the fixed block 743, the sliding rod 746 is sleeved with a third spring 747, one end of the third spring 747 is fixedly connected with the fixed plate 745, and the other end of the third spring 747 is fixedly connected with the side of the fixed block 743; when the inner wall of the tube box two 71 needs to be cleaned, the motor 72 is started, the rotating rod 741 is driven to rotate by the output end of the motor 72, so that the rotating rod 741 drives the rotating frame 742 to rotate in the inner cavity of the tube box two 71, so that the rotating frame 742 drives the cleaning brush 744 to clean the inner wall of the tube box two 71;

[0042] When the contact extrusion force between the cleaning brush 744 and the impurities on the inner wall of the tube box two 71 is greater than the supporting force of the third spring 747, the sliding rod 746 drives the fixed plate 745 to move towards the rotating rod 741, when the extrusion force between the cleaning brush 744 and the inner wall is uneven or too large, it may cause vibration and noise of the equipment, not only affecting the working environment, but also causing damage to the equipment itself, through the self-adaptive adjustment of the sliding rod 746 and the third spring 747 and other structures, the pressure between the cleaning brush 744 and the inner wall can be more stable, reducing the vibration and noise caused by sudden pressure change, so that the cleaning work can be carried out in a more quiet and stable state;

[0043] Please refer to Figure 9 The collecting mechanism 75 includes a collecting shell 751, which is symmetrically arranged on both sides of the rotating rod 741, and a plurality of circular holes are uniformly arranged on the side of the collecting shell 751 away from the baffle 754. The inner side of the collecting shell 751 is fixedly connected with the side surface of the rotating rod 741, and the inner side of the collecting shell 751 is slidably connected with a connecting shaft 752. The side of the connecting shaft 752 away from the inner wall of the collecting shell 751 is fixedly connected with the baffle 754, and a plurality of circular holes are uniformly arranged on the side surface of the baffle 754. The side surface of the connecting shaft 752 is fixedly connected with a contact plate 755, and the side surface of the contact plate 755 is in contact with a bent plate one 756. A fourth spring 753 is sleeved on the connecting shaft 752, one end of the fourth spring 753 is fixedly connected with the inner wall of the collecting shell 751, and the other end of the fourth spring 753 is fixedly connected with the side surface of the contact plate 755. The inner side of the collecting shell 751 is fixedly connected with the bent plate one 756, and the side of the collecting shell 751 away from the bent plate one 756 is fixedly connected with a bent plate two 757. When the output end of the motor 72 drives the rotating rod 741 to rotate, the cold fluid after heat exchange continuously enters the tube box two 71, and the side surface of the collecting shell 751 continuously impacts and extrudes the cold fluid after heat exchange. When the rotating rod 741 drives the collecting shell 751 to rotate under the action of centrifugal force, the baffle 754 moves towards the inner side of the collecting shell 751 when continuously impacting and extruding the cold fluid after heat exchange, and the baffle 754 drives the contact plate 755 to move in the inner side of the collecting shell 751 through the connecting shaft 752, so that the side surface of the contact plate 755 is separated from the bent plate one 756 and abuts against the side surface of the bent plate two 757, so that the cold fluid after heat exchange continuously enters the collecting shell 751, thereby collecting the impurities in the cold fluid after heat exchange. The circular holes are uniformly arranged on the side surface of the collecting shell 751 and the side surface of the baffle 754, so that the fluid in the inner cavity of the collecting shell 751 can flow out.

[0044] The specific working process is as follows:

[0045] The hot fluid is delivered from the external system to the water inlet 5 of the shell-and-tube heat exchanger through the pipeline, and enters the shell side in the main body 1. The hot fluid flows in the space between the shell of the main body 1 and the heat transfer pipe 931, and in the process of flowing, the hot fluid contacts the outer surface of the heat transfer pipe 931. The baffle 92 is arranged in the shell side of the main body 1, so that the hot fluid flows along a specific path, increases the residence time and disturbance degree of the hot fluid in the shell side of the main body 1, and strengthens the heat transfer effect. The hot fluid flows tortuously in the shell of the main body 1 under the guidance of the baffle 92, and constantly exchanges heat with the tube bundle;

[0046] The cold fluid is also delivered from the external system to the heat exchanger through the pipeline, and enters the tube box one 3 through the fluid interface 4;

[0047] Similarly to the hot fluid, the cold fluid flows in the tube side of the heat transfer pipe 931, and in the process of flowing, the cold fluid contacts the tube wall of the heat transfer pipe 931 and absorbs the heat transferred by the hot fluid, so that the temperature of the cold fluid increases;

[0048] In the process of flowing of the hot fluid and the cold fluid in the respective channels, heat is transferred through the tube wall of the heat transfer pipe 931. The temperature of the hot fluid is higher than that of the cold fluid. According to the heat conduction principle, heat is transferred from the hot fluid side to the cold fluid side through the tube wall of the heat transfer pipe 931, so that the temperature of the hot fluid decreases and the temperature of the cold fluid increases;

[0049] After the heat exchange in the heat exchanger, the temperature of the hot fluid decreases and the temperature of the cold fluid increases, and then the hot fluid and the cold fluid flow out of the heat exchanger main body 1 from the respective shell side and tube side of the heat transfer pipe 931 respectively, and enter the subsequent process flow or system;

[0050] The cold fluid first enters the tube box one 3 through the fluid interface 4, and then enters the heat transfer mechanism 93 through the tube side inlet of the tube box one 3. The tube side inlet of the tube box one 3 is usually designed with a distributor, which uniformly distributes the entering cold fluid to each heat transfer mechanism 93, so as to ensure that each heat transfer mechanism 93 has a suitable flow of cold fluid, avoiding the problem of poor local heat exchange caused by uneven flow;

[0051] At the same time, the cold fluid continuously enters the heat transfer pipe 931, and through the continuous impact force of the cold fluid, the moving assembly 936 moves on the connecting shaft 934 following the impact force of the cold fluid, and pulls the first spring 935, so that when the cold fluid passes through the heat transfer pipe 931, the moving assembly 936 can clean the inner wall of the heat transfer pipe 931;

[0052] The continuous impact force of the cold fluid makes the moving sleeve 9361 move on the connecting shaft 934, following the impact force of the cold fluid, so that the moving sleeve 9361 drives the scraper 9365 to move in contact with the inner wall of the heat transfer pipe 931 through the connecting frame 9362 and the connecting plate 9363. When the cold fluid flows, a boundary layer will be formed on the inner wall of the heat transfer pipe 931, which will hinder heat transfer. The scraper 9365 moves along the inner wall of the heat transfer pipe 931 under the action of the impact force of the cold fluid, which can destroy the boundary layer and make the heat exchange between the cold fluid and the pipe wall more sufficient, thereby strengthening the heat transfer process and improving the heat transfer efficiency of the heat exchanger.

[0053] During the operation of the heat exchanger, dirt deposition may occur on the inner wall of the heat transfer pipe 931, affecting the heat transfer efficiency. The scraper 9365 moves in contact with the inner wall of the heat transfer pipe 931, which can timely remove the dirt, impurities and other substances attached to the pipe wall, prevent the accumulation of dirt, keep the inner wall of the heat transfer pipe 931 clean, and prolong the effective operation time of the heat exchanger.

[0054] For some fluids containing solid particles or prone to crystallization, the scraper 9365 can play a role in dredging the pipe to prevent solid particles from accumulating or crystalline substances from blocking the heat transfer pipe 931, ensuring the normal flow of the cold fluid and maintaining the stable operation of the heat exchanger.

[0055] Since the scraper 9365 can automatically remove dirt and prevent blockage, the frequency of manual cleaning and maintenance is reduced, which not only reduces the work intensity of maintenance personnel, but also reduces the production loss caused by downtime maintenance and reduces the overall maintenance cost.

[0056] Keeping the inner wall of the heat transfer pipe 931 clean and having good heat transfer effect helps the cold fluid achieve the expected heat exchange effect at lower energy consumption. Compared with the situation where the heat transfer efficiency is reduced due to dirt accumulation, the power of the pump needs to be increased to increase the fluid flow to maintain the heat exchange effect. This way can effectively reduce the operating energy consumption and achieve the purpose of energy saving.

[0057] At the same time, by arranging the two connecting plates 9363 oppositely, the normal passing speed of the cold fluid through the heat transfer pipe 931 is not disturbed. By arranging the two connecting plates 9363 oppositely, their interference with the cold fluid can be offset or weakened. When the cold fluid passes through the heat transfer pipe 931, the local flow rate will not be too high or too low due to the blockage of one side of the connecting plate 9363, avoiding the disturbance of the flow field, so as to ensure that the cold fluid can pass through the heat transfer pipe 931 at a relatively stable and uniform speed, maintaining the normal heat transfer efficiency of the heat exchanger.

[0058] The oppositely arranged connecting plates 9363 can make the mobile sleeve 9361, connecting frame 9362 and other structures more balanced under the impact of cold fluid, and the connecting plates 9363 on both sides can restrict each other to prevent the mobile sleeve 9361 from excessive deviation or shaking during movement, thereby enhancing the stability of the whole scraper 9365 device, making it more reliable to drive the scraper 9365 to move in contact with the inner wall of the heat transfer pipe 931, and ensuring the normal realization of the functions of scraping dirt and the like;

[0059] Meanwhile, the inclined spoiler 9364 arranged in the connecting plate 9363 on one side can make the cold fluid produce a spiral flow trajectory during flow, thereby increasing the disturbance degree of the fluid. Such spiral flow can further destroy the boundary layer of the inner wall of the heat transfer pipe 931, so as to make the heat exchange between the cold fluid and the pipe wall more sufficient, thereby improving the heat transfer efficiency;

[0060] The presence of the spoiler 9364 can make the pressure distribution of the cold fluid more uniform during flow, and the spiral flow can make the pressure loss of the fluid in the heat transfer pipe 931 more stable, thereby avoiding the situation of local high or low pressure, which is helpful to reduce the operating pressure of the whole heat exchanger system and improve the safety and reliability of the system;

[0061] The spiral flow of the cold fluid guided by the spoiler 9364 can not only enhance the scouring effect of the fluid on the inner wall of the heat transfer pipe 931, but also make the contact between the scraper 9365 and the pipe wall more uniform and effective during movement. The spiral flow of the fluid can carry away the dirt and other impurities scraped off by the scraper 9365 more quickly, thereby improving the self-cleaning ability of the heat exchanger and further ensuring the heat transfer effect and stable operation of the equipment;

[0062] When the cold fluid continues to enter the heat transfer pipe 931, when the continuous impact force of the cold fluid is less than the tensile force of the first spring 935, so as to reset by the tensile reset of the first spring 935, so that the moving sleeve 9361 drives the two sides of the scraper 9365 to reset in the heat transfer pipe 931, so that the connecting frame 9362 provided with the spoiler 9364 is close to one side of the moving sleeve 9361, and the side of the buffer plate two 9339 is in extrusion contact, so that the buffer plate two 9339 drives the buffer plate one 9336 through the buffer shell 9337, and at the same time, the sliding sleeve 9331 drives the sliding frame one 9332 to move to the sliding frame two 9334, and at the same time, the buffer rod 9333 is moved on the sliding frame two 9334 through the sliding frame one 9332, and at the same time, the second spring 9335 is buffered and extruded, so as to avoid the impact force between the scraper 9365 and the sliding frame two 9334 when the scraper 9365 is reset by the first spring 935, which may cause the connection between the equipment parts to be loose or the seal to be invalid, thereby eliminating the leakage hidden danger that may be caused by the loose parts or the damaged seal, ensuring that the heat exchanger will not leak cold fluid during operation, and ensuring the safe operation of the equipment;

[0063] After the cold fluid after heat exchange continues to pass through the heat transfer pipe 931 and enters the connecting part 7, the continuous impact force of the fluid impacts the paddle 73, so that the paddle 73 drives the cleaning mechanism 74 to rotate in the pipe box two 71, so that the cleaning mechanism 74 cleans the inner wall of the pipe box two 71; when the inner wall of the pipe box two 71 needs to be cleaned, and the impact force of the fluid on the paddle 73 is too small, the motor 72 is started, the output end of the motor 72 drives the cleaning mechanism 74 to rotate in the pipe box two 71, and at the same time, the centrifugal force acts, so that the collecting mechanism 75 collects the impurities in the fluid;

[0064] When the inner wall of the pipe box two 71 needs to be cleaned, the motor 72 is started, the output end of the motor 72 drives the rotating rod 741 to rotate, so that the rotating rod 741 drives the rotating frame 742 to rotate in the inner cavity of the pipe box two 71, so that the rotating frame 742 drives the cleaning brush 744 to clean the inner wall of the pipe box two 71;

[0065] When the rotating frame 742 drives the cleaning brush 744 to rotate, it can clean the inner wall of the pipe box two 71 in 360 degrees around the rotating rod 741, avoiding dead angles. Compared with manual cleaning, this method can clean all parts of the inner wall of the pipe box two 71 more quickly and comprehensively, greatly improving the cleaning efficiency and the maintenance time of the equipment;

[0066] The rotating cleaning brush 744 can generate certain friction and pressure when in contact with the inner wall of the tube box two 71, which can effectively remove stubborn dirt and deposits. This cleaning method under the action of mechanical force can more effectively remove impurities on the inner wall of the tube box two 71 than some simple flushing or wiping methods, so as to restore the inner wall of the tube box two 71 to be clean and smooth, and improve the heat transfer efficiency and operating performance of the shell-and-tube heat exchanger;

[0067] When the rotating rod 741 is driven to rotate by the motor 72, the cleaning brush 744 is driven to rotate by the rotating frame 742 to clean the inner wall of the tube box two 71. When the contact pressure between the cleaning brush 744 and the impurities on the inner wall of the tube box two 71 is greater than the supporting force of the third spring 747, the sliding rod 746 drives the fixed plate 745 to move towards the rotating rod 741. When the contact pressure between the cleaning brush 744 and the inner wall is uneven or too large, it may cause vibration and noise of the equipment, which not only affects the working environment, but also may cause damage to the equipment. Through the self-adaptive adjustment of the sliding rod 746 and the third spring 747, the pressure between the cleaning brush 744 and the inner wall can be more stable, the vibration and noise caused by sudden pressure change can be reduced, and the cleaning work can be carried out in a more quiet and stable state.

[0068] When the rotating rod 741 is driven to rotate by the motor 72, the cold fluid after heat exchange continuously enters the tube box two 71. The side surface of the collecting shell 751 is continuously impacted and extruded by the cold fluid after heat exchange, and the collecting shell 751 is driven to rotate by the rotating rod 741. When the baffle 754 is continuously impacted and extruded by the cold fluid after heat exchange under the action of centrifugal force, the baffle 754 moves to the inside of the collecting shell 751, and the contact plate 755 is driven to move to the inside of the collecting shell 751 by the connecting shaft 752. The side surface of the contact plate 755 is separated from the curved plate one 756 and abuts against the side surface of the curved plate two 757, so that the cold fluid after heat exchange continuously enters the collecting shell 751, and the impurities in the cold fluid after heat exchange are collected. The circular holes are uniformly arranged on the side surface of the collecting shell 751 and the side surface of the baffle 754, so that the fluid in the inner cavity of the collecting shell 751 can flow out.

[0069] The impact and extrusion of the cold fluid on the collecting shell 751 and the baffle 754, combined with the action of centrifugal force, can make the impurities in the cold fluid be subjected to multiple forces, which can more effectively separate the impurities from the fluid. The impurities are more easily moved to the inside of the collecting shell 751 under the combined action of these forces, which improves the separation efficiency of the impurities and the fluid and makes the collection of the impurities more complete.

[0070] Meanwhile, by arranging the bending plate one 756 and the bending plate two 757 in the inner side of the collecting shell 751 respectively, and arranging the bending plate one 756 close to the baffle 754, when the baffle 754 is impacted by the impact force and moves into the collecting shell 751, the baffle 754 drives the contact plate 755 to separate from the bending plate one 756 and contact with the bending plate two 757, so as to guide the impurities to gather in the inner side of the collecting shell 751, thereby realizing the targeted collection of the impurities, avoiding the dispersion of the impurities in the tube box two 71, and facilitating the subsequent unified treatment of the impurities.

[0071] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless specifically described and limited.

Claims

1. A shell-and-tube heat exchanger convenient to maintain, comprising, characterized by: a main body (1), one end of the main body (1) is fixedly connected with a support (2), one end of the main body (1) is fixedly connected with a tube box one (3), the side surface of the tube box one (3) is fixedly connected with a fluid interface (4), the end of the main body (1) away from the tube box one (3) is fixedly connected with a connecting component (7), the side surface of the connecting component (7) is fixedly connected with a water outlet (8), the side of the main body (1) away from the support (2) is fixedly connected with a water inlet (5), and the side of the main body (1) away from the water inlet (5) is fixedly connected with a blowdown port (6); a heat transfer component (9) for guiding the transportation of cold liquid, and the side surface of the heat transfer component (9) is fixedly connected with the inner side of the main body (1); the heat transfer component (9) comprises a baffle (92), the side surface of the baffle (92) is fixedly connected with the inner side of the main body (1), and the tube plate (91) is uniformly provided with a heat transfer mechanism (93), both ends of the heat transfer mechanism (93) are fixedly connected with the tube plate (91), and the side surface of the tube plate (91) is fixedly connected with the inner side of the main body (1); the heat transfer mechanism (93) comprises a heat transfer pipe (931), the inner wall of the heat transfer pipe (931) is fixedly connected with a limiting frame (932), the side surface of the limiting frame (932) is fixedly connected with a connecting shaft (934), the end of the connecting shaft (934) away from the limiting frame (932) is fixedly connected with a buffer assembly (933), the side surface of the buffer assembly (933) is fixedly connected with the inner wall of the heat transfer pipe (931), the side of the limiting frame (932) close to the connecting shaft (934) is fixedly connected with a first spring (935), the other end of the first spring (935) is fixedly connected with a moving assembly (936), and the inner side of the moving assembly (936) is slidably connected with the side surface of the connecting shaft (934); the buffer assembly (933) comprises a sliding sleeve (9331), the inner side of the sliding sleeve (9331) is slidably connected with the side surface of the connecting shaft (934), one side of the sliding sleeve (9331) is fixedly connected with a sliding frame one (9332), the side surface of the sliding frame one (9332) is fixedly connected with a buffer rod (9333), the end of the buffer rod (9333) away from the sliding frame one (9332) is slidably connected with a sliding frame two (9334), the buffer rod (9333) is sleeved with a second spring (9335), one side of the sliding sleeve (9331) away from the sliding frame one (9332) is fixedly connected with a buffer plate one (9336), one side of the buffer plate one (9336) away from the sliding sleeve (9331) is fixedly connected with a buffer shell (9337), one side of the buffer shell (9337) away from the buffer plate one (9336) is fixedly connected with a buffer plate two (9339), and the side surface of the buffer shell (9337) is uniformly provided with a gap slot (9338). The inner side of the sliding frame two (9334) is fixedly connected with one end of the connecting shaft (934) away from the limiting frame (932), the inner side of the sliding frame one (9332) is slidably connected with the side of the connecting shaft (934), the side of the buffer plate two (9339) is slidably connected with the side of the connecting shaft (934), one end of the second spring (9335) is fixedly connected with the sliding frame one (9332), and the other end of the second spring (9335) is fixedly connected with the sliding frame two (9334).

2. A shell and tube heat exchanger convenient to maintain as claimed in claim 1 wherein: Both ends of the heat transfer pipe (931) are fixedly connected with the inner side of the tube plate (91), and the side of the heat transfer pipe (931) is fixedly connected with the inner side of the baffle (92).

3. A shell and tube heat exchanger convenient to maintain as claimed in claim 1 wherein: The moving assembly (936) comprises a moving sleeve (9361), the inner side of the moving sleeve (9361) is slidably connected with the side of the connecting shaft (934), both sides of the moving sleeve (9361) are fixedly connected with connecting frames (9362), the connecting frames (9362) are reversely provided with connecting plates (9363) away from both sides of the moving sleeve (9361), the connecting frames (9362) are fixedly connected with the connecting plates (9363), the inner side of the connecting plate (9363) is fixedly connected with one end of the first spring (935) away from the limiting frame (932), the inner side of the other side of the connecting plate (9363) is fixedly connected with a spoiler (9364), the connecting plate (9363) is fixedly connected with a scraper (9365) away from the connecting plate (9363), and the side, away from the connecting plate (9363), of the scraper (9365) is in contact with the inner wall of the heat transfer pipe (931).

4. A shell and tube heat exchanger convenient to maintain as claimed in claim 1 wherein: The connecting part (7) comprises a tube box two (71), the inner side of the tube box two (71) is fixedly connected with the side of the water outlet (8), the side of the tube box two (71) is fixedly connected with the side, away from the tube box one (3), of the main body (1), the inner side of the tube box two (71) is rotatably connected with a cleaning mechanism (74), the side of the cleaning mechanism (74) is fixedly connected with a paddle (73), the side, away from the cleaning mechanism (74), of the paddle (73) is rotatably connected with the side, away from the heat transfer pipe (931), of the tube plate (91), the side of the cleaning mechanism (74) is fixedly connected with a collecting mechanism (75), the side of the tube box two (71) is fixedly connected with a motor (72), and the output end of the motor (72) is fixedly connected with the side, away from the paddle (73), of the cleaning mechanism (74).

5. A shell and tube heat exchanger convenient to maintain as claimed in claim 4 wherein: The cleaning mechanism (74) includes a rotating rod (741), one end of the rotating rod (741) is rotatably connected with the inner side of the tube box two (71), the other end of the rotating rod (741) is fixedly connected with the side of the paddle (73), the side of the rotating rod (741) is uniformly provided with a rotating frame (742), the side of the rotating frame (742) is fixedly connected with the inner side of the rotating rod (741), the side, away from the rotating rod (741), of the rotating frame (742) is slidably connected with a cleaning brush (744), both sides of the rotating frame (742) are fixedly connected with a fixed block (743), both sides of the cleaning brush (744) are fixedly connected with a fixed plate (745), the top of the fixed plate (745) is slidably connected with a sliding rod (746), one end of the sliding rod (746), away from the fixed plate (745), is fixedly connected with the inner side of the fixed block (743), the sliding rod (746) is sleeved with a third spring (747), one end of the third spring (747) is fixedly connected with the fixed plate (745), the other end of the third spring (747) is fixedly connected with the side of the fixed block (743).

6. A shell and tube heat exchanger convenient to maintain as claimed in claim 4 wherein: The collecting mechanism (75) includes a collecting shell (751), the collecting shell (751) is symmetrically arranged on both sides of the rotating rod (741), the inner side of the collecting shell (751) is fixedly connected with the side of the rotating rod (741), the inner side of the collecting shell (751) is slidably connected with a connecting shaft (752), one side of the connecting shaft (752), away from the inner wall of the collecting shell (751), is fixedly connected with a baffle (754), the side of the connecting shaft (752) is fixedly connected with a contact plate (755), the connecting shaft (752) is sleeved with a fourth spring (753), the inner side of the collecting shell (751) is fixedly connected with a bent plate one (756), one side of the collecting shell (751), away from the bent plate one (756), is fixedly connected with a bent plate two (757).

7. A shell and tube heat exchanger convenient to maintain as claimed in claim 6 wherein: The side of the contact plate (755) is in contact with the bent plate one (756), one end of the fourth spring (753) is fixedly connected with the inner wall of the collecting shell (751), the other end of the fourth spring (753) is fixedly connected with the side of the contact plate (755), the side, away from the baffle (754), of the collecting shell (751) is uniformly provided with a circular hole, the side of the baffle (754) is uniformly provided with a circular hole.

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