Tubular heat exchanger

Abstract

The invention discloses a tubular heat exchanger, which relates to the technical field of heat exchangers and comprises a composite mechanism. According to the tubular heat exchanger, through the design of a composite mechanism, liquid with the high temperature enters from the hot liquid pipe and exits from the hot liquid discharging pipe, cold water enters from the cold liquid pipe and exits from the cold liquid discharging pipe, the two kinds of liquid are guided through the pipe bundle in the composite shell, and therefore heat exchange work of heat exchange is completed; uniform mixing is promoted through a spiral structure, impurities in liquid are prevented from being layered and precipitated, impurity residues generated when the liquid flows in equipment are reduced, the service life of the equipment is prolonged, the impurity scaling time is prolonged, the operation efficiency is improved, and the baffle plates are arranged on the inner wall of the composite shell, so that the effects of increasing the heat exchange period and achieving uniform heat exchange are achieved; and damage to equipment caused by thermal stress due to overlarge temperature difference is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube heat exchanger. Background Art

[0002] Shell and tube heat exchanger is a heat exchange equipment widely used in chemical, petroleum, power, food and other industries. At present, heat exchanger is an energy-saving equipment that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment to improve energy utilization.

[0003] During the operation of the existing heat exchanger, the thermal elongation of the shell and the heat exchange tube is significantly different, which will generate considerable temperature difference stress between the shell and the heat exchange tube and extrusion destructive force between the structures, causing the equipment to shake and impurities to form scale when the liquid enters the equipment. A new design was developed to address this situation. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A shell and tube heat exchanger, comprising:

[0005] A composite mechanism for exchanging heat with a liquid;

[0006] A processing mechanism, the processing mechanism is used to protect the composite mechanism;

[0007] The middle of the exterior of the composite mechanism is fixedly connected to the inner side of the processing mechanism;

[0008] Among them, the composite mechanism includes a composite shell, the middle of the outside of the composite shell is fixedly connected to the inner side of the processing mechanism, the two sides of the outside of the composite shell are fixedly connected with pipe boxes, the outside of the pipe box is fixedly connected with a hot liquid pipe, the liquid with a higher temperature enters from the hot liquid pipe and exits from the hot liquid discharge pipe, the cold water enters from the cold liquid pipe and exits from the cold liquid discharge pipe, the inside of the hot liquid pipe is fixedly connected with a spiral plate, and a spiral plate is arranged inside the hot liquid pipe. The spiral structure promotes uniform mixing, prevents impurities in the liquid from stratification and precipitation, reduces impurity residues when flowing inside the equipment, prolongs the service life of the equipment, prolongs the scaling time of impurities, and improves operating efficiency. The inside of the composite shell is close to the pipe box One side of the composite shell is fixedly connected to a fixed tube sheet, and one side outside the fixed tube sheet is fixedly connected to a tube bundle. The two liquids are guided through the tube bundle inside the composite shell to complete the heat exchange work of the heat exchange. The inner wall of the composite shell is fixedly connected to a baffle, and the baffle is arranged on the inner wall of the composite shell to increase the heat exchange cycle and achieve uniform heat exchange, thereby preventing the thermal stress caused by excessive temperature difference from damaging the equipment. The side of the outside of the composite shell away from the hot liquid pipe is fixedly connected to a cold liquid pipe, the side of the outside of the pipe box away from the hot liquid pipe is fixedly connected to a hot liquid discharge pipe, the side of the outside of the composite shell close to the cold liquid pipe is fixedly connected to the cold liquid discharge pipe, and the outside of the pipe box is fixedly connected to a buffer mechanism.

[0009] Preferably, the buffer mechanism includes a support frame, the inner side of the support frame is fixedly connected to the outer side of the pipe box, the outer side of the support frame away from the pipe box is fixedly connected to a support rod, the outer side of the support rod is sleeved with a spring block, and the outer side of the support rod away from the support frame is fixedly connected to a buffer base. When the liquid inside the device is exchanged, the pressure generated by the flow of the liquid will cause the device to shake, so by sleeved with a spring block on the outside of the support rod, the spring material plays a shock-absorbing and buffering effect, thereby improving the stability of the device during operation and preventing shaking from affecting the operation effect.

[0010] Preferably, a connection block is fixedly connected to the middle of the top of the buffer base, and a telescopic rod is fixedly connected between the opposite surfaces of the connection block. When hot liquid and cold liquid flow inside the composite structure, there is a large temperature difference, which leads to a large thermal stress reaction, and thermal expansion or contraction is prone to occur. The telescopic rod adopts a telescopic structure and makes slight changes according to the reaction of the equipment, so as to achieve the effect of maintaining the stability of the equipment.

[0011] Preferably, the treatment mechanism comprises a treatment shell, the inner side of the treatment shell is fixedly connected to the outer side of the composite shell, a first annular frame is fixedly connected to one side of the outside of the treatment shell, a second annular frame is fixedly connected to the other side of the outside of the treatment shell, a filter mechanism is fixedly connected to one side of the inner wall of the treatment shell, and a friction mechanism is fixedly connected to one side of the outside of the filter mechanism. The treatment shell adopts a folding structure design to absorb the thermal expansion through its own elastic deformation, thereby reducing the stress of the pipeline and the equipment, adapting to the thermal expansion or contraction caused by the change of thermal stress of the pipeline, protecting the equipment and preventing the equipment from being damaged by thermal stress.

[0012] Preferably, the processing mechanism also includes a processing bracket, the inner side of the processing bracket is fixedly connected to the outer side of the composite shell, and an electric push rod is fixedly connected to one side of the outside of the processing bracket, which is pushed by the electric push rod to be plugged into and connected with a docking mechanism on one side of the first annular frame, so as to achieve the effect of quickly fixing the components, facilitate installation and disassembly, and facilitate subsequent inspection and cleaning of equipment, and a docking mechanism is fixedly connected to one side of the outside of the electric push rod away from the processing bracket, and the side of the docking mechanism away from the electric push rod is fixedly connected to the outer side of the first annular frame.

[0013] Preferably, the docking mechanism includes a docking frame and a docking joint, one side of the outside of the docking frame is fixedly connected to one side of the first annular frame, and the side of the docking frame away from the first annular frame is rotatably connected to a semi-arc plate, and the docking joint and the semi-arc plate are pushed by an electric push rod to apply pressure so that the semi-arc plate wraps the docking joint, thereby achieving a clamping and fixing effect, the outer side of the semi-arc plate is fixedly connected to an external block, and the outer side of the external block close to the docking frame is fixedly connected to a spring frame, the spring frame is connected to the external block, and has a shock-absorbing and buffering effect through the spring structure, and at the same time supports the semi-arc plate, thereby achieving a clamping effect, and the side of the docking joint away from the docking frame is fixedly connected to the outer side of the electric push rod.

[0014] The filter mechanism of claim 1, wherein the outer side of the filter frame is fixedly connected to the inner side of the processing shell, and a grille plate is fixedly connected to one side of the inner wall of the filter frame, and a mesh is provided on the surface of the grille plate, so that the exchange pressure is reduced through a plurality of fine mesh holes to limit the flow rate. The inner wall of the filter frame is provided with a built-in groove on the side away from the grille plate, and a spring bar is provided on the inner side of the built-in groove, and a connecting rod is slidably connected to the inner wall of the built-in groove, and the connecting rod is supported by the spring bar to improve the clamping force of the clamping block, thereby improving the fixing effect of the components, facilitating the replacement of components and reducing the difficulty of operation. The connecting rod is fixedly connected to the clamping block on the side away from the spring bar, and a block surface cutout is provided on one side of the outer side of the clamping block, and the contact area is increased by the groove by providing the block surface cutout, so as to improve the friction force on the components, play a certain anti-slip effect, and prevent objects from shaking. The inner side of the clamping block is clamped and connected with a filter plate, which plays a role in filtering impurities through the filter plate, thereby reducing the scaling of impurities inside the equipment.

[0015] Preferably, the friction mechanism includes a connecting rod, which is fixedly connected to the friction frame on a side of the connecting rod away from the filter frame, and an annular groove is provided on the outer side of the friction frame, and a sliding rod is slidably connected to the inner side of the annular groove, and the friction frame is impacted by the flow of liquid inside the equipment, driving the sliding rod to rotate on the surface of the friction frame, so that the scratching mechanism scratches the inner wall of the equipment, thereby cleaning internal impurities, reducing accumulated impurities, facilitating the discharge of impurities, and maintaining the normal operation of the equipment; a paddle plate is fixedly connected to the outer side of the sliding rod, and the paddle plate is connected to the surface of the sliding rod, thereby increasing the contact area, improving the rotation effect, and improving the cleaning efficiency; a clamping mechanism is fixedly connected to the side of the sliding rod away from the friction frame, and the scratching mechanism is plug-connected to the outer side of the clamping mechanism.

[0016] Preferably, the scraping mechanism includes a bottom plug plate, which is clamped with the clamping mechanism through the bottom plug plate to achieve the effect of quick fixing, so that the scraper can be replaced after a long period of operation and severe wear. The outer side of the bottom plug plate is plug-connected with the inner side of the clamping mechanism, and the side of the bottom plug plate away from the clamping mechanism is fixedly connected with a scraper, and the scraper is driven by the flow of liquid to scrape the inner wall of the equipment, so as to achieve the effect of cleaning scale and avoid excessive accumulation of scale affecting the exchange effect. Bevel grooves are provided on both sides of the outside of the scraper. By providing the bevel grooves, the chip removal effect is increased through the grooves, and the attachment of impurities is reduced to avoid affecting the subsequent friction effect. Secondly, the friction performance is increased through the grooves to improve the cleaning effect of scale.

[0017] Preferably, the clamping mechanism includes a clamping frame, one side of the outer portion of the clamping frame is fixedly connected to one side of the sliding rod, a cylindrical groove is provided on the inner side of the clamping frame, a metal strip is provided on the inner wall of the cylindrical groove, and a protruding block is slidably connected to the inner wall of the cylindrical groove. The protruding block is squeezed by the bottom plug plate, and then the metal strip rebounds to support the protruding block, thereby achieving a clamping effect on the component, facilitating the fixing of the component, and the metal strip is compressed by pulling the bottom plug plate, thereby achieving the effect of removing the component.

[0018] The present invention provides a shell-and-tube heat exchanger having the following beneficial effects:

[0019] 1. The shell-and-tube heat exchanger is designed with a composite structure. The liquid with a higher temperature enters from the hot liquid pipe and exits from the hot liquid discharge pipe, and the cold water enters from the cold liquid pipe and exits from the cold liquid discharge pipe. The two liquids are guided through the tube bundle inside the composite shell to complete the heat exchange work. A spiral plate is arranged inside the hot liquid pipe. The spiral structure promotes uniform mixing, prevents stratification and precipitation of impurities in the liquid, reduces impurity residues when flowing inside the equipment, extends the service life of the equipment, extends the scaling time of impurities, and improves operating efficiency. The baffle is arranged on the inner wall of the composite shell to increase the heat exchange cycle, uniform heat exchange, and prevent thermal stress caused by excessive temperature difference from damaging the equipment.

[0020] 2. The shell-and-tube heat exchanger is designed with a buffer mechanism. When the liquid inside the equipment is exchanged, the pressure generated by the liquid flow will cause the equipment to shake. Therefore, a spring block is installed on the outside of the support rod, and the spring material has a shock-absorbing and buffering effect, thereby improving the stability of the equipment during operation and preventing shaking from affecting the operating effect. When hot liquid and cold liquid flow inside the composite structure, there is a large temperature difference, which leads to a large thermal stress reaction and is prone to thermal expansion or contraction. The telescopic rod adopts a telescopic structure and makes slight changes according to the equipment reaction, so as to achieve the effect of maintaining the stability of the equipment.

[0021] 3. The shell and tube heat exchanger adopts a folding structure design through the processing mechanism design, so as to absorb the thermal expansion through its own elastic deformation, thereby reducing the stress of pipelines and equipment, adapting to the thermal expansion or contraction caused by the thermal stress change of the pipeline, protecting the equipment and preventing the equipment from being damaged by thermal stress. The electric push rod is used to push the docking mechanism on one side of the first annular frame for plug-in connection, so as to achieve the effect of quickly fixing the components, facilitate installation and disassembly, and facilitate subsequent inspection and cleaning of the equipment.

[0022] Fourth, the shell-and-tube heat exchanger is designed with a docking mechanism. The electric push rod is used to push the docking joint and the semi-arc plate to apply pressure, so that the semi-arc plate wraps the docking joint to achieve the effect of clamping and fixing. The spring frame is connected to the external block, and the spring structure has a shock-absorbing and buffering effect. At the same time, the semi-arc plate is supported to achieve the effect of maintaining the clamping effect.

[0023] 5. The shell-and-tube heat exchanger is designed with a filtering mechanism and mesh holes on the surface of the grid plate. Multiple fine mesh holes can reduce the exchange pressure and limit the flow rate. The filter plate can filter impurities and reduce the scaling of impurities inside the equipment. The spring bars support the connecting rods to increase the clamping force of the clamping blocks, improve the fixing effect of the components, facilitate the replacement of components, and reduce the difficulty of operation. By opening the block surface incisions and increasing the contact area through grooving, the friction force on the components is increased, which has a certain anti-slip effect and prevents objects from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the external structure of the shell and tube heat exchanger of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell and tube heat exchanger of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the composite mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the processing mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the docking mechanism structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-sectional structure of the filtering mechanism of the present invention;

[0031] Figure 8 It is a schematic diagram of the friction mechanism structure of the present invention;

[0032] Fig. 9 It is a partial enlarged structural schematic diagram of the scraping mechanism of the present invention;

[0033] Fig.10 It is a schematic diagram of the partial cross-section structure of the clamping mechanism of the present invention.

[0034] In the figure: 1. composite mechanism; 2. processing mechanism; 101. composite shell; 102. pipe box; 103. hot liquid pipe; 104. spiral plate; 105. fixed tube plate; 106. tube bundle; 107. baffle; 108. cold liquid pipe; 109. cold liquid discharge pipe; 110. hot liquid discharge pipe; 111. buffer mechanism; 1111. support frame; 1112. support rod; 1113. spring block; 1114. buffer base; 1115. connecting block; 1116. telescopic rod; 21. processing shell; 22. first annular frame; 23. second annular frame; 24. processing bracket; 25. electric push rod; 26. docking mechanism; 27. filtering mechanism; 28. friction mechanism; 261. docking frame; 262. semi-arc plate; 263. external block; 264. spring frame; 265. docking joint; 271. filter frame; 272. grille plate; 273. built-in groove; 274. spring bar; 275. connecting rod; 276. clamping block; 277. block surface cut; 278. filter plate; 281. connecting rod; 282. friction frame; 283. annular groove; 284. sliding rod; 285. paddle board; 286. scraping mechanism; 287. snap-fit ​​mechanism; 2861. bottom plug plate; 2862. scraper; 2863. bevel groove; 2871. snap-fit ​​frame; 2872. cylindrical groove; 2873. metal strip; 2874. raised block. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0036] The first embodiment, as Figures 1 to 4 As shown, the present invention provides a technical solution: a shell-and-tube heat exchanger, comprising a composite mechanism 1, the composite mechanism 1 is used to exchange heat for liquid;

[0037] A processing mechanism 2, the processing mechanism 2 is used to protect the composite mechanism 1;

[0038] The middle of the exterior of the composite mechanism 1 is fixedly connected to the inner side of the processing mechanism 2;

[0039] Among them, the composite mechanism 1 includes a composite shell 101, the middle of the outside of the composite shell 101 is fixedly connected to the inner side of the processing mechanism 2, both sides of the outside of the composite shell 101 are fixedly connected with a pipe box 102, the outside of the pipe box 102 is fixedly connected with a hot liquid pipe 103, the inside of the hot liquid pipe 103 is fixedly connected with a spiral plate 104, the side of the inside of the composite shell 101 close to the pipe box 102 is fixedly connected with a fixed tube sheet 105, the side of the outside of the fixed tube sheet 105 is fixedly connected with a tube bundle 106, the inner wall of the composite shell 101 is fixedly connected with a baffle 107, the side of the outside of the composite shell 101 away from the hot liquid pipe 103 is fixedly connected with a cold liquid pipe 108, the side of the outside of the pipe box 102 away from the hot liquid pipe 103 is fixedly connected with a hot liquid discharge pipe 110, the side of the outside of the composite shell 101 close to the cold liquid pipe 108 is fixedly connected with a cold liquid discharge pipe 109, and the outside of the pipe box 102 is fixedly connected with a buffer mechanism 111.

[0040] The higher temperature liquid enters from the hot liquid pipe 103 and exits from the hot liquid discharge pipe 110, and the cold water enters from the cold liquid pipe 108 and exits from the cold liquid discharge pipe 109. The two liquids are guided through the tube bundle 106 inside the composite shell 101 to complete the heat exchange work. A spiral plate 104 is arranged inside the hot liquid pipe 103. The spiral structure promotes uniform mixing, prevents impurities in the liquid from stratifying and precipitating, reduces impurity residues when flowing inside the equipment, extends the service life of the equipment, extends the scaling time of impurities, and improves operating efficiency. The baffle 107 is arranged on the inner wall of the composite shell 101 to increase the heat exchange cycle, achieve uniform heat exchange, and prevent thermal stress caused by excessive temperature difference from damaging the equipment.

[0041] The buffer mechanism 111 includes a support frame 1111, the inner side of the support frame 1111 is fixedly connected to the outer side of the pipe box 102, the outer side of the support frame 1111 away from the pipe box 102 is fixedly connected to a support rod 1112, the outer side of the support rod 1112 is sleeved with a spring block 1113, and the outer side of the support rod 1112 away from the support frame 1111 is fixedly connected to a buffer base 1114. When the liquid inside the device is exchanged, the pressure generated by the flow of the liquid will cause the device to shake, so by sleeved with a spring block 1113 on the outside of the support rod 1112, the spring material plays a shock-absorbing and buffering effect, thereby improving the stability of the device during operation and preventing shaking from affecting the operation effect.

[0042] A connection block 1115 is fixedly connected to the middle of the top of the buffer base 1114, and a telescopic rod 1116 is fixedly connected between the opposite surfaces of the connection block 1115. When hot liquid and cold liquid flow inside the composite mechanism 1, there is a large temperature difference, which leads to a large thermal stress reaction, and thermal expansion or contraction is prone to occur. The telescopic rod 1116 adopts a telescopic structure and makes slight changes according to the device reaction, so as to achieve the effect of maintaining the stability of the device.

[0043] The second embodiment is based on the first embodiment. Figures 5 to 7 As shown, the processing mechanism 2 includes a processing shell 21, the inner side of the processing shell 21 is fixedly connected to the outer side of the composite shell 101, a first annular frame 22 is fixedly connected to one side of the outside of the processing shell 21, a second annular frame 23 is fixedly connected to the other side of the outside of the processing shell 21, a filtering mechanism 27 is fixedly connected to one side of the inner wall of the processing shell 21, and a friction mechanism 28 is fixedly connected to one side of the outside of the filtering mechanism 27. The processing shell 21 adopts a folding structure design, so as to absorb the thermal expansion through its own elastic deformation, thereby reducing the stress of the pipeline and the equipment, adapting to the thermal expansion or contraction caused by the change of thermal stress of the pipeline, protecting the equipment and preventing the equipment from being damaged by thermal stress.

[0044] The processing mechanism 2 also includes a processing bracket 24, the inner side of which is fixedly connected to the outer side of the composite shell 101, an electric push rod 25 is fixedly connected to one side of the outside of the processing bracket 24, a docking mechanism 26 is fixedly connected to one side of the electric push rod 25 away from the processing bracket 24, and a side of the docking mechanism 26 away from the electric push rod 25 is fixedly connected to the outer side of the first annular frame 22. The electric push rod 25 pushes the docking mechanism 26 on one side of the first annular frame 22 to be plugged and connected, so as to achieve the effect of fast fixing components, facilitate installation and disassembly, and facilitate subsequent inspection and cleaning of the equipment.

[0045] The docking mechanism 26 includes a docking frame 261 and a docking joint 265. One side of the docking frame 261 is fixedly connected to one side of the first annular frame 22. The side of the docking frame 261 away from the first annular frame 22 is rotatably connected to a semi-arc plate 262. The outer side of the semi-arc plate 262 is fixedly connected to an external block 263. The outer side of the external block 263 close to the docking frame 261 is fixedly connected to a spring frame 264. The side of the docking joint 265 away from the docking frame 261 is fixedly connected to the outer side of the electric push rod 25. The electric push rod 25 pushes the docking joint 265 and the semi-arc plate 262 to apply pressure, so that the semi-arc plate 262 wraps the docking joint 265, so as to achieve the effect of clamping and fixing. The spring frame 264 is connected to the external block 263, and has a shock-absorbing and buffering effect through the spring structure. At the same time, it supports the semi-arc plate 262, so as to achieve the effect of maintaining the clamping effect.

[0046] The filtering mechanism 27 includes a filtering frame 271, the outer side of the filtering frame 271 is fixedly connected to the inner side of the processing shell 21, a grille plate 272 is fixedly connected to one side of the inner wall of the filtering frame 271, a built-in groove 273 is provided on the side of the inner wall of the filtering frame 271 away from the grille plate 272, a spring bar 274 is provided on the inner side of the built-in groove 273, a connecting rod 275 is slidably connected to the inner wall of the built-in groove 273, a clamping block 276 is fixedly connected to the side of the connecting rod 275 away from the spring bar 274, a block surface cutout 277 is provided on one side of the outside of the clamping block 276, and a filter plate 278 is clamped and connected to the inner side of the clamping block 276. The surface of the grille plate 272 is provided with mesh holes, which reduce the exchange pressure and limit the flow rate through multiple fine mesh holes. The filter plate 278 filters impurities and reduces the scaling of impurities inside the equipment. The spring bar 274 supports the connecting rod 275 to increase the clamping force of the clamping block 276, improve the fixing effect of the components, facilitate the replacement of components, and reduce the difficulty of operation. By opening the block surface cutout 277 and increasing the contact area through grooving, the friction force on the components is increased, which has a certain anti-slip effect and prevents objects from shaking.

[0047] The third embodiment is based on the first and second embodiments. Figures 8 to 10 As shown, the friction mechanism 28 includes a connecting rod 281, and a friction frame 282 is fixedly connected to the side of the connecting rod 281 away from the filter frame 271. An annular groove 283 is provided on the outer side of the friction frame 282, and a sliding rod 284 is slidably connected to the inner side of the annular groove 283. A paddle 285 is fixedly connected to the outer side of the sliding rod 284. A clamping mechanism 287 is fixedly connected to the side of the sliding rod 284 away from the friction frame 282, and a scratching mechanism 286 is plugged and connected to the outer side of the clamping mechanism 287. The friction frame 282 is impacted by the flow of liquid inside the device, driving the sliding rod 284 to rotate on the surface of the friction frame 282, so that the scratching mechanism 286 scratches the inner wall of the device, thereby cleaning the internal impurities, reducing the accumulated impurities, facilitating the discharge of impurities, and maintaining the normal operation of the device. The surface of the sliding rod 284 is connected to the paddle 285, thereby increasing the contact area, improving the rotation effect, and improving the cleaning efficiency.

[0048] The scraping mechanism 286 includes a bottom plug plate 2861, the outer side of the bottom plug plate 2861 is plugged and connected with the inner side of the clamping mechanism 287, and a scraper 2862 is fixedly connected to the side of the bottom plug plate 2861 away from the clamping mechanism 287, and both sides of the outside of the scraper 2862 are provided with beveled grooves 2863. The bottom plug plate 2861 is clamped with the clamping mechanism 287 to achieve the effect of rapid fixing, so that the scraper 2862 is easily replaced after long-term operation due to excessive wear, and the scraper 2862 is driven by the flow of liquid to scrape the inner wall of the equipment, so as to achieve the effect of cleaning the scale and avoid the accumulation of too much scale affecting the exchange effect. By opening the beveled groove 2863, the chip removal effect is increased by grooving, the attachment of impurities is reduced, and the subsequent friction effect is avoided. Secondly, the friction performance is increased by grooving to improve the cleaning effect of the scale.

[0049] The clamping mechanism 287 includes a clamping frame 2871, one side of the outer portion of the clamping frame 2871 is fixedly connected to one side of the sliding rod 284, a cylindrical groove 2872 is provided on the inner side of the clamping frame 2871, a metal strip 2873 is provided on the inner wall of the cylindrical groove 2872, and a protruding block 2874 is slidably connected to the inner wall of the cylindrical groove 2872. The protruding block 2874 is squeezed by the bottom plug plate 2861, and then the metal strip 2873 rebounds to support the protruding block 2874, thereby achieving a clamping effect on the component, facilitating the fixing of the component, and by pulling the bottom plug plate 2861, the metal strip 2873 is compressed, thereby achieving the effect of removing the component.

[0050] When in use, high-temperature liquid enters from the hot liquid pipe 103, and cold water enters from the cold liquid pipe 108, and heat exchange is carried out inside the composite structure 1. Then the high-temperature liquid is discharged from the hot liquid discharge pipe 110, and the cold water is discharged from the cold liquid discharge pipe 109. A spiral plate 104 is arranged inside the hot liquid pipe 103. The spiral structure promotes uniform mixing, prevents impurities in the liquid from stratifying and precipitating, reduces impurity residues when flowing inside the equipment, extends the service life of the equipment, extends the scaling time of impurities, and improves operating efficiency. Secondly, a buffer mechanism 111 is also arranged inside the composite structure 1. When cold water and high-temperature liquid exchange heat inside the composite structure 1, the thermal stress generated by the agitation of the liquid and the temperature difference between hot and cold will cause shaking of the equipment, affecting the operation of the equipment. The buffer mechanism 111 is used to improve the stability of the equipment, reduce the probability of equipment damage, and prevent shaking from affecting the heat exchange effect.

[0051] The processing mechanism 2 is arranged in the middle of the outside of the composite mechanism 1, and the processing mechanism 2 plays a protective role on the composite mechanism 1. The processing shell 21 adopts a folding structure design to absorb the thermal expansion through its own elastic deformation, thereby reducing the stress of the pipeline and the equipment, adapting to the thermal expansion or contraction caused by the thermal stress change of the pipeline, and protecting the equipment to prevent the equipment from being damaged by thermal stress. A filtering mechanism 27 is arranged inside the processing mechanism 2. The filtering mechanism 27 plays a role in filtering impurities in the liquid, reducing the accumulation of impurities inside the equipment, reducing the scaling of impurities, avoiding the scaling affecting the heat exchange effect, and extending the service life of the equipment. Secondly, a friction mechanism 28 is also arranged inside the processing mechanism 2, and the friction mechanism 28 is driven by the flow of liquid inside the equipment to operate, so as to achieve the effect of cleaning the scaling on the inner wall, reduce scaling accumulation, extend the service life of the equipment, and improve the heat exchange effect.

[0052] 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 ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A shell and tube heat exchanger, characterized in that: include: A composite mechanism (1), the composite mechanism (1) being used for exchanging heat for a liquid; A processing mechanism (2), the processing mechanism (2) is used to protect the composite mechanism (1); The middle of the exterior of the composite mechanism (1) is fixedly connected to the inner side of the processing mechanism (2); The composite mechanism (1) comprises a composite shell (101), the middle of the exterior of the composite shell (101) is fixedly connected to the inside of the processing mechanism (2), both sides of the exterior of the composite shell (101) are fixedly connected to a pipe box (102), the exterior of the pipe box (102) is fixedly connected to a hot liquid pipe (103), the interior of the hot liquid pipe (103) is fixedly connected to a spiral plate (104), the interior of the composite shell (101) is fixedly connected to a fixed tube sheet (105) on one side close to the tube box (102), and the exterior of the fixed tube sheet (105) is fixedly connected to a hot liquid pipe (103). A tube bundle (106) is fixedly connected to one side of the composite shell (101); a baffle (107) is fixedly connected to the inner wall of the composite shell (101); a cold liquid pipe (108) is fixedly connected to the side of the composite shell (101) away from the hot liquid pipe (103); a hot liquid discharge pipe (110) is fixedly connected to the side of the pipe box (102) away from the hot liquid pipe (103); a cold liquid discharge pipe (109) is fixedly connected to the side of the composite shell (101) close to the cold liquid pipe (108); and a buffer mechanism (111) is fixedly connected to the outside of the pipe box (102).

2. A shell-and-tube heat exchanger according to claim 1, characterized in that: The buffer mechanism (111) comprises a support frame (1111), the inner side of the support frame (1111) is fixedly connected to the outer side of the pipe box (102), the outer side of the support frame (1111) away from the pipe box (102) is fixedly connected to a support rod (1112), the outer side of the support rod (1112) is sleeved with a spring block (1113), and the outer side of the support rod (1112) away from the support frame (1111) is fixedly connected to a buffer base (1114).

3. A shell-and-tube heat exchanger according to claim 2, characterized in that: A connecting block (1115) is fixedly connected to the middle of the top of the buffer base (1114), and a telescopic rod (1116) is fixedly connected between opposite surfaces of the connecting block (1115).

4. A shell-and-tube heat exchanger according to claim 1, characterized in that: The processing mechanism (2) comprises a processing shell (21), the inner side of the processing shell (21) is fixedly connected to the outer side of the composite shell (101), one side of the outside of the processing shell (21) is fixedly connected to a first annular frame (22), the other side of the outside of the processing shell (21) is fixedly connected to a second annular frame (23), one side of the inner wall of the processing shell (21) is fixedly connected to a filtering mechanism (27), and one side of the outside of the filtering mechanism (27) is fixedly connected to a friction mechanism (28).

5. A shell-and-tube heat exchanger according to claim 4, characterized in that: The processing mechanism (2) further comprises a processing support (24), the inner side of the processing support (24) being fixedly connected to the outer side of the composite shell (101), the outer side of the processing support (24) being fixedly connected to an electric push rod (25), the outer side of the electric push rod (25) being fixedly connected to a docking mechanism (26) away from the processing support (24), and the side of the docking mechanism (26) being away from the electric push rod (25) being fixedly connected to the outer side of the first annular frame (22).

6. A shell-and-tube heat exchanger according to claim 5, characterized in that: The docking mechanism (26) comprises a docking frame (261) and a docking joint (265); one side of the outside of the docking frame (261) is fixedly connected to one side of the first annular frame (22); a side of the docking frame (261) away from the first annular frame (22) is rotatably connected to a semi-arc plate (262); an outer side of the semi-arc plate (262) is fixedly connected to an external block (263); a side of the outer side of the external block (263) close to the docking frame (261) is fixedly connected to a spring frame (264); and a side of the docking joint (265) away from the docking frame (261) is fixedly connected to the outer side of the electric push rod (25).

7. A shell-and-tube heat exchanger according to claim 4, characterized in that: The filtering mechanism (27) comprises a filtering frame (271), the outer side of the filtering frame (271) is fixedly connected to the inner side of the processing shell (21), a grille plate (272) is fixedly connected to one side of the inner wall of the filtering frame (271), a built-in groove (273) is provided on the side of the inner wall of the filtering frame (271) away from the grille plate (272), a spring bar (274) is provided on the inner side of the built-in groove (273), a connecting rod (275) is slidably connected to the inner wall of the built-in groove (273), a clamping block (276) is fixedly connected to the side of the connecting rod (275) away from the spring bar (274), a block surface cutout (277) is provided on one side of the outer side of the clamping block (276), and a filter plate (278) is clamped and connected to the inner side of the clamping block (276).

8. The shell-and-tube heat exchanger according to claim 4, characterized in that: The friction mechanism (28) comprises a connecting rod (281), the side of the connecting rod (281) away from the filter frame (271) is fixedly connected to a friction frame (282), an annular groove (283) is provided on the outer side of the friction frame (282), a sliding rod (284) is slidably connected to the inner side of the annular groove (283), a paddle (285) is fixedly connected to the outer side of the sliding rod (284), a clamping mechanism (287) is fixedly connected to the side of the sliding rod (284) away from the friction frame (282), and a scratching mechanism (286) is plugged and connected to the outer side of the clamping mechanism (287).

9. A shell-and-tube heat exchanger according to claim 8, characterized in that: The scraping mechanism (286) comprises a bottom plug plate (2861), the outer side of the bottom plug plate (2861) is plug-connected with the inner side of the clamping mechanism (287), a scraper (2862) is fixedly connected to the side of the bottom plug plate (2861) away from the clamping mechanism (287), and beveled grooves (2863) are provided on both sides of the outside of the scraper (2862).

10. A shell-and-tube heat exchanger according to claim 9, characterized in that: The clamping mechanism (287) comprises a clamping frame (2871), one side of the outside of the clamping frame (2871) is fixedly connected to one side of the sliding rod (284), a cylindrical groove (2872) is provided on the inner side of the clamping frame (2871), a metal strip (2873) is provided on the inner wall of the cylindrical groove (2872), and a protruding block (2874) is slidably connected to the inner wall of the cylindrical groove (2872).

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