A high-temperature shell-and-tube heat exchanger

Abstract

This invention belongs to the technical field of heat exchanger equipment, specifically a high-temperature shell-and-tube heat exchanger, including a heat exchanger body; the heat exchanger body is provided with a heat exchanger shell; a fixed plate is fixedly connected to one end of the heat exchanger shell; a fluid tube is fixedly connected through the fixed plate; a baffle plate is fixedly connected inside the heat exchanger shell; a heat transfer tube bundle inlet is provided on the side of the heat exchanger shell near the fixed plate; a heat transfer tube bundle outlet is provided on the side of the heat exchanger shell away from the fixed plate; a rotating structure is provided on the outer surface of the fluid tube; an evaporation device is provided at the bottom of the heat exchanger shell; by rotating the rotating structure, water droplets on the surface of the fluid tube are cleaned, thereby increasing the contact area between the hot air and the surface of the fluid tube, further improving the heat exchange efficiency; by using the evaporation device, the accumulated water is evaporated by the hot air, forming hot air that preheats the fluid tube, further improving the heat exchange efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of heat exchanger equipment, specifically a high-temperature shell-and-tube heat exchanger. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers part of the heat from the hot fluid to the cold fluid, hence it is also called a heat exchanger. According to the heat transfer principle, it can be classified into indirect heat exchangers, regenerative heat exchangers, fluid-connected indirect heat exchangers, etc. High-temperature shell and tube heat exchangers are a type of indirect heat exchanger.

[0003] The operating principle of a high-temperature shell-and-tube heat exchanger is as follows: A shell-and-tube heat exchanger mainly consists of a shell, heat transfer tube bundles, tube sheets, baffles, and tube boxes. The two fluids involved in heat exchange are hot and cold; one flows inside the tubes (called the tube-side fluid), and the other flows outside the tubes (called the shell-side fluid). To improve the heat transfer coefficient of the fluid outside the tubes, several baffles are usually installed inside the shell. The baffles increase the velocity of the shell-side fluid, forcing the fluid to pass through the tube bundle laterally multiple times along a predetermined path, thus enhancing the degree of fluid turbulence.

[0004] In the existing shell-and-tube heat exchanger, during operation, a higher-temperature fluid flows through the heat transfer tube bundle and transfers heat to the lower-temperature fluid inside the tube, thus achieving the heat exchange process. However, during the heat exchange process, when the gas comes into contact with the lower-temperature tube bundle, a large amount of hot vapor condenses and accumulates on the outer surface of the fluid tube, forming water droplets. This results in incomplete contact between the hot vapor and the fluid tube, reducing the heat transfer effect.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention designs a high-temperature shell-and-tube heat exchanger, which solves the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that in the heat exchange process of the shell and tube heat exchanger in the prior art, when the gas comes into contact with the tube bundle at a lower temperature, a large amount of hot steam condenses and gathers on the outer surface of the fluid tube, forming water droplets, which in turn makes the contact between the hot steam and the fluid tube incomplete and reduces the heat transfer effect.

[0007] This invention provides a high-temperature shell-and-tube heat exchanger, comprising a heat exchanger body; the heat exchanger body is provided with a heat exchanger shell; a first fixing plate is fixedly connected to one end of the heat exchanger shell; a fluid tube is fixedly connected through the first fixing plate; a baffle plate is fixedly connected inside the heat exchanger shell; a first inlet of the heat transfer tube bundle is provided on the outside of the heat exchanger shell near the first fixing plate; a heat transfer tube bundle outlet is provided on the outside of the heat exchanger shell away from the first fixing plate; and a second inlet of the heat transfer tube bundle is provided on the outside of the heat exchanger shell near the outlet of the heat transfer tube bundle.

[0008] A rotating structure is provided on the outer surface of the fluid pipe to remove water droplets formed on the surface of the fluid pipe by hot air.

[0009] Evaporation device; the evaporation device is located at the bottom of the heat exchanger shell to preheat the fluid inlet by water droplets that are converted back into hot gas.

[0010] Preferably, the rotating device includes;

[0011] Bearing; the bearing is disposed between the baffles and close to the baffles;

[0012] Rotating rod; the rotating rod is fixed to the side of the bearing away from the baffle plate and away from the fluid pipe;

[0013] Cleaning brush; the cleaning brush is fixed to the side of the rotating rod near the fluid pipe to remove water droplets formed on the surface of the fluid pipe by hot air;

[0014] Spring; the spring is fixed to the rotating rod;

[0015] A rubber ball; the rubber ball is fixed to the end of the spring away from the rotating rod.

[0016] Preferably, the evaporation apparatus includes;

[0017] Water inlet; the water inlet is located at the bottom of the heat exchanger shell;

[0018] Water collection tank; the water collection tank extends into the heat exchanger housing at the lower end of the water inlet hole;

[0019] Vent pipe; the vent pipe is located on the side of the water collection tank near the first fixing plate and is fixedly connected to the first fixing plate;

[0020] Air inlet; the air inlet is located on the side of the vent pipe near the water collection tank.

[0021] Preferably, a blower structure is provided; the blower structure is located at the first inlet of the heat transfer tube bundle to enhance the flow rate of hot gas.

[0022] Preferably, the blower structure includes;

[0023] Protective cover; the protective cover is located on the side of the heat transfer tube bundle inlet No. 1 near the heat exchanger inlet and is fixedly connected to the heat exchanger shell along the fluid direction.

[0024] Motor; the motor is fixed to the side of the protective cover near the heat exchanger inlet;

[0025] Rotating rod; the rotating rod is fixedly connected to the output end of the motor through the protective cover;

[0026] The first bevel gear; the first bevel gear is fixedly connected to the rotating rod;

[0027] Second bevel gear; the second bevel gear meshes with the first bevel gear;

[0028] Second fixing rod; the second fixing rod is fixed to the inner wall of the first inlet of the heat transfer tube bundle;

[0029] Fan; the fan is fixedly connected to the middle position of the second fixing rod;

[0030] Rotating shaft; the rotating shaft is fixedly connected to the second bevel gear; the rotating shaft is fixedly connected to the fan.

[0031] Preferably, a pressure sensor is fixedly attached to the inner wall of the fluid inlet near the protective cover.

[0032] Preferably, the heat exchanger inlet is equipped with a No. 1 filter screen.

[0033] Preferably, a second filter screen is provided at the first inlet of the heat transfer tube bundle.

[0034] Preferably, the cleaning brush is made of glass cloth.

[0035] Preferably, the inner surface of the heat exchanger shell is coated with an epoxy coal tar coating.

[0036] The beneficial effects of this invention are as follows:

[0037] 1. The present invention provides a high-temperature shell-and-tube heat exchanger in which, when a cold fluid passes through a fluid tube, the rotation of the rotating structure cleans the water droplets on the surface of the fluid tube, thereby increasing the contact area between the hot gas and the surface of the fluid tube and further improving the heat exchange efficiency; the evaporation device allows the accumulated water to be evaporated by the hot gas, forming hot gas to preheat the fluid tube, which further improves the heat exchange efficiency.

[0038] 2. The present invention provides a high-temperature shell-and-tube heat exchanger. When the cold fluid passes through the pressure sensor, the faster the flow rate of the cold fluid, the greater the impact force of the water flow. As the pressure on the pressure sensor increases, the rotation speed of the rotating rod increases, and the rotation speed of the first bevel gear and the second bevel gear also increases. Consequently, the fan speed also increases, enabling the heat exchanger to adaptively change the speed at which hot gas enters the heat transfer tube bundle according to the flow rate of the cold fluid, thereby further improving the heat exchange efficiency. Attached Figure Description

[0039] The invention will now be further described with reference to the accompanying drawings.

[0040] Figure 1 This is a main body diagram of the present invention;

[0041] Figure 2 This is a diagram of the internal structure of the present invention;

[0042] Figure 3 This is a partial structural diagram of the present invention;

[0043] Figure 4 This is a partial structural diagram of the present invention;

[0044] Figure 5 yes Figure 4 Structural diagram at point A;

[0045] In the diagram: 1. Heat exchanger body; 11. Heat exchanger shell; 12. Fixed plate 1; 13. Baffle plate; 14. Heat transfer tube bundle inlet 1; 15. Heat transfer tube bundle outlet 1; 16. Filter screen 1; 17. Filter screen 2; 18. Heat transfer tube bundle inlet 2; 2. Fluid pipe; 21. Bearing; 22. Rotating rod; 23. Cleaning brush; 24. Spring; 25. Rubber ball; 3. Water inlet; 31. Water collection tank; 4. Vent pipe; 41. Air inlet; 5. Protective cover; 51. Motor; 6. Rotating rod; 61. Bevel gear 1; 62. Bevel gear 2; 63. Fixed rod 2; 64. Fan; 65. Rotating shaft; 7. Pressure sensor. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Existing high-temperature shell-and-tube heat exchangers have the following drawbacks during the heat exchange process: When the gas comes into contact with the tube bundle at a lower temperature during the heat exchange process, a large amount of hot steam condenses and accumulates on the outer surface of the fluid tube, forming water droplets. This results in incomplete contact between the hot steam and the fluid tube, reducing the heat transfer effect.

[0048] To solve the above problems, the main concept adopted in this embodiment is as follows: by rotating the rotating structure, water droplets on the surface of the fluid pipe are cleaned, thereby increasing the contact area between the hot air and the surface of the fluid pipe; by using the evaporation device, the accumulated water is evaporated by the hot air, forming hot air that preheats the fluid pipe, further improving the heat exchange efficiency.

[0049] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0050] This invention provides a high-temperature shell-and-tube heat exchanger, comprising a heat exchanger body 1; the heat exchanger body 1 is provided with a heat exchanger shell 11; a first fixing plate 12 is fixedly connected to one end of the heat exchanger shell 11; a fluid pipe 2 is fixedly connected through the first fixing plate 12; a baffle plate 13 is fixedly connected inside the heat exchanger shell 11; a first inlet 14 of a heat transfer tube bundle is provided on the outside of the heat exchanger shell 11 near the first fixing plate 12; a heat transfer tube bundle outlet 15 is provided on the outside of the heat exchanger shell 11 away from the first fixing plate 12; and a second inlet 18 of a heat transfer tube bundle is provided on the outside of the heat exchanger shell 11 near the heat transfer tube bundle outlet 15.

[0051] A rotating structure is provided on the outer surface of the fluid pipe 2 to remove water droplets formed on the surface of the fluid pipe 2 by hot air.

[0052] Evaporation device; the evaporation device is located at the bottom of the heat exchanger shell 11 to preheat the fluid pipe 2 opening by converting water droplets that are converted back into hot gas.

[0053] When the heat exchanger starts working, the cold fluid enters through the fluid pipe 2 at the first fixed plate 12, and the hot gas enters the heat exchanger body 1 through the first inlet 14 and the second inlet 18 of the heat transfer tube bundle. The hot gas from the first inlet 14 of the heat transfer tube bundle passes through the fluid pipe 2 and the baffle plate 13 and then flows out from the outlet 15 of the heat transfer tube bundle. The hot gas from the second inlet 18 of the heat transfer tube bundle enhances the heat exchange efficiency of the liquid flowing through the subsequent tube bundle. When the hot gas passes through the fluid pipe 2, the hot gas condenses on the surface of the cold fluid pipe 2 to form water droplets. The rotation of the rotating structure scrapes off the water droplets, and then the water droplets drip to the bottom of the heat exchanger shell 11. An evaporation device is provided at the bottom of the heat exchanger shell 11, so that the accumulated water evaporates again at high temperature, thereby preheating the fluid pipe 2.

[0054] In the prior art, since the fluid tube 2 is filled with a cold liquid, when the gas comes into contact with the tube bundle at a lower temperature during the heat exchange process, a large amount of hot steam condenses and gathers on the outer surface of the fluid tube, forming water droplets. This hinders the direct contact between the hot steam and the fluid tube, resulting in incomplete contact between the hot steam and the fluid tube, thereby reducing the heat transfer effect and the heat exchanger's heat exchange efficiency.

[0055] The present invention cleans water droplets on the surface of fluid pipe 2 by rotating the rotating structure, thereby increasing the contact area between hot air and the surface of fluid pipe 2 and further improving the heat exchange efficiency; by using the evaporation device, the accumulated water is evaporated by the hot air, forming hot air that preheats fluid pipe 2, which further improves the heat exchange efficiency.

[0056] As one specific embodiment of the present invention, the rotating device includes;

[0057] Bearing 21; the bearing 21 is sleeved on the surface of the fluid pipe 2, and the inner ring of the bearing 21 is fixedly connected to the fluid pipe 2;

[0058] Rotating rod 22; the rotating rod 22 is disposed between two bearings 21, and the end of the rotating rod 22 is fixedly connected to the outer ring of the bearing 21;

[0059] Cleaning brush 23; the cleaning brush 23 is fixed to the side of the rotating rod 22 near the fluid pipe 2 to remove water droplets formed on the surface of the fluid pipe 2 by hot air;

[0060] Spring 24; the spring 24 is fixedly connected to the rotating rod 22;

[0061] Rubber ball 25; the rubber ball 25 is fixed to the end of the spring 24 away from the rotating rod 22;

[0062] As one specific embodiment of the present invention, the evaporation apparatus includes;

[0063] Water inlet 3; the water inlet 3 is located at the bottom of the heat exchanger shell 11;

[0064] Water collection tank 31; the water collection tank 31 extends into the heat exchanger shell 11 at the lower end of the water inlet hole 3;

[0065] Vent pipe 4; The vent pipe 4 is located on the side of the water collection tank 31 near the first fixing plate 12 and is fixedly connected to the first fixing plate 12.

[0066] Air inlet 41; the air inlet 41 is located on the side of the vent pipe 4 near the water collection tank 31;

[0067] When the cold fluid passes through the fluid tube 2, hot air enters the heat exchanger shell 11 from the first inlet 14 of the heat transfer tube bundle, heating the cold fluid inside the fluid tube 2. Part of the rotating rod 22 will rotate due to the blowing of the hot air, causing the outer ring of the bearing 21 to rotate. At this time, the cleaning brush 23 also rotates with the rotating rod 22, causing water droplets on the surface of the fluid tube 2 to fall to the bottom of the heat exchanger shell 11. However, after the first heat exchange, the rotating rod 22 is not always in its initial position during the next heat exchange. This is achieved by the rubber ball 2 on the rotating rod 22 that can be driven to rotate. 5. The rotating rod 22, which cannot be rotated by the hot air, comes into contact with the rotating rod 22, which is partially unable to be moved by the hot air. At the same time, the rubber ball 25 will also come into contact with the fluid pipe 2 under the action of the spring 24, and then knock the fluid pipe 2, causing the water droplets condensed on the surface of the fluid pipe 2 to fall off and enter the water collection tank 31 through the water inlet 3. The water in the water collection tank 31 forms water vapor under the action of the hot air and flows out from the air inlet 41. The hot steam flows upward along the vent pipe 4, which preheats the fluid pipe 2 near the first fixed plate 12, further improving the heat exchange efficiency of the heat exchanger.

[0068] The hot air blows the rotating rod 22, causing the outer ring of the bearing 21 to rotate. This causes the cleaning brush 23 to clean the water droplets on the surface of the fluid pipe 2, increasing the heating area between the fluid pipe 2 and the hot air, further accelerating the heating rate of the cold fluid inside the fluid pipe 2, and further improving the efficiency of the heat exchanger. The impact of the rubber ball 25 on the fluid pipe 2 further accelerates the speed at which the water droplets fall, further increasing the heating area between the fluid pipe 2 and the hot air. The water vapor formed by the accumulated water moving upwards towards the vent pipe 4 allows the fluid pipe 2 at one end of the first fixed plate 12 to achieve a preheating effect, further improving the heat exchange efficiency of the heat exchanger.

[0069] As a specific embodiment of the present invention, a blower structure is provided; the blower structure is located at the first inlet 14 of the heat transfer tube bundle to enhance the flow rate of hot air.

[0070] When there is too much cold fluid, the cold fluid drives the blower structure, which acts on the first inlet 14 of the heat transfer tube bundle, causing the hot air at the first inlet 14 of the heat transfer tube bundle to flow faster, further improving the heat exchange efficiency of the heat exchanger.

[0071] As a specific embodiment of the present invention, the blower structure includes;

[0072] Protective cover 5; The protective cover 5 is located on the side of the heat transfer tube bundle inlet 14 near the heat exchanger inlet and is fixedly connected to the heat exchanger shell 11 along the fluid direction.

[0073] Motor 51; The motor 51 is fixedly connected to the protective cover 5 on the side near the heat exchanger inlet;

[0074] Rotating rod 6; the rotating rod 6 is fixedly connected to the output end of the motor 51 through the protective cover 5;

[0075] First bevel gear 61; the first bevel gear 61 is fixedly connected to the end of the rotating rod 6 away from the output end of the motor 51;

[0076] Second bevel gear 62; the second bevel gear 62 is meshed with the first bevel gear 61;

[0077] Second fixing rod 63; the second fixing rod 63 is fixed to the inner wall of the first inlet 14 of the heat transfer tube bundle;

[0078] Fan 64; The fan 64 is fixedly connected to the middle position of the second fixing rod 63;

[0079] Rotating shaft 65; the rotating shaft 65 is fixedly connected to the second bevel gear 62; the rotating shaft 65 is fixedly connected to the fan 64;

[0080] The protective cover 5 is used to fix the motor 51 and the protective rotating rod 6. Cold fluid enters the heat exchanger body 1 from the outside. The operator controls the switch, and the motor 51 starts to work. The output end of the motor 51 drives the rotating rod 6 to rotate, which in turn drives the first bevel gear 61 to rotate. The first bevel gear 61 drives the second bevel gear 62 to rotate. The second fixing rod 63 is used to fix the position of the fan 64 to prevent the position of the fan 64 from changing due to the passage of hot air. The second bevel gear 62 drives the rotating shaft 65 to rotate, which in turn drives the fan 64 to rotate, thereby accelerating the speed at which hot air enters the heat transfer tube bundle and further improving the heat exchange efficiency of the heat exchanger.

[0081] In one specific embodiment of the present invention, a pressure sensor 7 is fixedly connected to the inner wall of the fluid pipe 2 near the protective cover 5.

[0082] When the cold fluid passes through the pressure sensor 7, the faster the flow rate of the cold fluid, the greater the impact force of the water flow, and the different signal values ​​transmitted by the pressure sensor 7. It is set that the greater the pressure on the pressure sensor 7, the greater the power of the motor. As the pressure on the pressure sensor 7 increases, the rotation speed of the rotating rod 6 increases, and the rotation speed of the first bevel gear 61 and the second bevel gear 62 also increases, which in turn increases the rotation speed of the fan 64. This further enables the heat exchanger to adapt to the flow rate of the cold fluid and change the speed at which the hot air enters the heat transfer tube bundle, further improving the heat exchange efficiency.

[0083] In one specific embodiment of the present invention, the heat exchanger inlet is provided with a filter screen 16;

[0084] Before the cold fluid flows into the fluid pipe 2, the No. 1 filter screen 16 prevents most impurities from entering the heat exchanger. On the one hand, this reduces the possibility of impurities clogging the fluid pipe 2, making it easier for staff to clean; on the other hand, it reduces the impact of impurities in the fluid on the blower structure, further improving the heat exchange efficiency.

[0085] As a specific embodiment of the present invention, a second filter screen 17 is provided at the first inlet 14 of the heat transfer tube bundle;

[0086] There are many impurities in the heat transfer process. Adding a second filter screen 17 reduces the possibility of impurities entering the heat transfer tube bundle and makes it easier for staff to clean. On the other hand, it reduces the impact of impurities on the rotation of the fan 64 and further improves the heat exchange efficiency.

[0087] In one specific embodiment of the present invention, the cleaning brush 23 is made of glass cloth;

[0088] When the rotating rod 22 drives the cleaning brush to work, the cleaning brush is in the space for heat transfer and is in contact with water. The glass cloth is made of glass fiber and has properties such as heat insulation, corrosion resistance, high temperature resistance and high strength. It can better adapt to the environment and improve heat exchange efficiency.

[0089] As a specific embodiment of the present invention, the inner surface of the heat exchanger shell 11 is coated with an epoxy coal tar coating.

[0090] Because the inner surface of the heat exchanger shell 11 is coated with an epoxy coal tar coating, and the epoxy coal tar coating has high adhesion and a very smooth surface, liquid does not easily adhere to the inner surface of the heat exchanger shell 11, which makes the cleaning of cold fluid easier and will not cause damage due to long-term fluid passage.

[0091] The specific workflow is as follows:

[0092] When the heat exchanger starts working, the cold fluid passes through pressure sensor 7. As the flow rate of the cold fluid increases, the impact force of the water flow is greater, and the signal value transmitted by pressure sensor 7 also varies. It is set that the greater the pressure on pressure sensor 7, the greater the power of the motor. Motor 51 starts working, and its output drives the rotating rod 6 to rotate, which in turn drives the first bevel gear 61 to rotate. The first bevel gear 61 then drives the second bevel gear 62 to rotate. The second fixing rod 63 is used to fix the position of fan 64, preventing the fan 64 from changing position due to the passing hot air. The second bevel gear 62 drives the rotating shaft 65 to rotate, which in turn drives the fan 64 to rotate. The speed at which hot gas enters the heat transfer tube bundle is accelerated; cold fluid enters from the inlet of fluid pipe 2 at the first fixed plate 12, and hot gas enters the heat exchanger body 1 from the first inlet 14 of the heat transfer tube bundle. After passing through fluid pipe 2 and baffle 13, it flows out from the outlet 15 of the heat transfer tube bundle. At the same time, some of the hot gas entering from the second inlet 18 of the heat transfer tube bundle heats up the subsequent hot gas with reduced heat, thereby enhancing the heat exchange effect of the subsequent tube bundle. When the hot gas passes through fluid pipe 2, the hot gas condenses on the surface of the cold fluid pipe 2 to form water droplets. The rotation of the rotating structure scrapes off the water droplets, and then the water droplets drip to the bottom of the heat exchanger shell 11. An evaporation device is provided at the bottom of the heat exchanger shell 11, which allows the accumulated water to evaporate again at high temperature, thus preheating the fluid pipe 2.

[0093] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature shell-and-tube heat exchanger, characterized in that: The system includes a heat exchanger body (1); the heat exchanger body (1) is provided with a heat exchanger shell (11); a first fixing plate (12) is fixedly connected to one end of the heat exchanger shell (11); a fluid pipe (2) is fixedly connected through the first fixing plate (12); a baffle plate (13) is fixedly connected inside the heat exchanger shell (11); a heat transfer tube bundle first inlet (14) is provided on the side of the heat exchanger shell (11) near the first fixing plate (12); and the heat exchanger shell (11) is located at a distance from the first fixing plate (12). A heat transfer tube bundle outlet (15) is provided on one side away from the first fixed plate (12); a second heat transfer tube bundle inlet (18) is provided on the outside of the heat exchanger shell (11) near the heat transfer tube bundle outlet (15); a rotating structure is provided on the outer surface of the fluid tube (2) to remove water droplets formed on the surface of the fluid tube (2) by hot gas; an evaporation device is provided at the bottom of the heat exchanger shell (11) to preheat the inlet of the fluid tube (2) by converting the water droplets that are converted back into hot gas. The evaporation device includes: a water inlet (3); the water inlet (3) is located at the bottom of the heat exchanger shell (11); a water collection tank (31); the water collection tank (31) extends into the heat exchanger shell (11) at the lower end of the water inlet (3); a vent pipe (4); the vent pipe (4) is located on the side of the water collection tank (31) near the first fixing plate (12) and is fixedly connected to the first fixing plate (12); and an air inlet (41); the air inlet (41) is located on the side of the vent pipe (4) near the water collection tank (31).

2. A high-temperature shell-and-tube heat exchanger according to claim 1, characterized in that: The rotating structure includes: a bearing (21); the bearing (21) is disposed between and close to the baffles (13); the inner ring of the bearing (21) is fixedly connected to the fluid pipe (2); a rotating rod (22); the rotating rod (22) is fixedly connected to the side of the bearing (21) away from the baffles (13) and is fixedly connected to the outer ring of the bearing (21); a cleaning brush (23); the cleaning brush (23) is fixedly connected to the side of the rotating rod (22) close to the fluid pipe (2) to remove water droplets formed on the surface of the fluid pipe (2) by hot air; a spring (24); the spring (24) is fixedly connected to the bearing (21); and a rubber ball (25); the rubber ball (25) is fixedly connected to the end of the spring (24) away from the rotating rod (22).

3. A high-temperature shell-and-tube heat exchanger according to claim 1, characterized in that: The blower structure is located at the first inlet (14) of the heat transfer tube bundle to enhance the flow rate of hot gas.

4. A high-temperature shell-and-tube heat exchanger according to claim 3, characterized in that: The blower structure includes: a protective cover (5); the protective cover (5) is located on the side of the heat transfer tube bundle inlet (14) near the heat exchanger inlet and is fixedly connected to the heat exchanger shell (11) along the fluid direction; a motor (51); the motor (51) is fixedly connected to the protective cover (5) on the side near the heat exchanger inlet; a rotating rod (6); the rotating rod (6) is fixedly connected to the output end of the motor (51) that passes through the protective cover (5); a first bevel gear (61); the first bevel gear (61) and the rotating rod (61) are connected to the heat exchanger shell (11) along the fluid direction; a first bevel gear (61); the first bevel gear (61) and the rotating rod (61) are connected to the heat exchanger shell (11) along the fluid direction; a first bevel gear (61); the first bevel gear (61) and the rotating rod (61) are connected to the heat exchanger shell (11) along the fluid direction; a first bevel gear (61); the first bevel gear (61) and the first bevel gear (61) are connected to the heat exchanger shell (11) along the fluid direction; a first bevel gear (61) and the first bevel gear (6 ... Moving rod (6) fixedly connected; second bevel gear (62); the second bevel gear (62) meshes with the first bevel gear (61); second fixed rod (63); the second fixed rod (63) is fixedly connected to the inner wall of the first inlet (14) of the heat transfer tube bundle; fan (64); the fan (64) is fixedly connected to the middle position of the second fixed rod (63); rotating shaft (65); the rotating shaft (65) is fixedly connected to the second bevel gear (62); the rotating shaft (65) is fixedly connected to the fan (64).

5. A high-temperature shell-and-tube heat exchanger according to claim 4, characterized in that: A pressure sensor (7) is fixedly connected to the inner wall of the heat exchanger housing (11) near the protective cover (5).

6. A high-temperature shell-and-tube heat exchanger according to claim 1, characterized in that: The heat exchanger body (1) is equipped with a filter screen (16) at the inlet.

7. A high-temperature shell-and-tube heat exchanger according to claim 1, characterized in that: A second filter screen (17) is provided at the first inlet (14) of the heat transfer tube bundle.

8. A high-temperature shell-and-tube heat exchanger according to claim 2, characterized in that: The cleaning brush (23) is made of glass cloth.

9. A high-temperature shell-and-tube heat exchanger according to claim 4, characterized in that: The inner surface of the heat exchanger shell (11) is coated with an epoxy coal tar coating.

Images