Detachable upper tube plate for heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a detachable upper tube plate for a heat exchanger, which comprises an upper tube plate body, a heat exchange unit and a limit unit. A plurality of heat exchange holes are formed in the upper tube plate body; a heat exchange unit is arranged on the multiple heat exchange holes, the heat exchange unit comprises a first heat exchange pipe and a second heat exchange pipe, the first heat exchange pipe is fixedly connected with the heat exchange holes, one end of the second heat exchange pipe is connected with the first heat exchange pipe, and the first heat exchange pipe and the second heat exchange pipe are used for circulating heat exchange fluid; the limiting unit comprises a butt joint part and a clamping part, the clamping part is arranged on the first heat exchange tube, the butt joint part is arranged on the second heat exchange tube, the butt joint part and the clamping part are connected in a clamped mode, and the first heat exchange tube and the second heat exchange tube are connected in a clamped mode through the clamping part and the butt joint part in a matched mode. The first heat exchange tube and the second heat exchange tube can be clamped in a matched mode, and the convenience of mounting and dismounting the heat exchange tubes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a detachable upper tube plate for a heat exchanger. Background Art

[0002] A tubular heat exchanger is a highly efficient heat exchange device widely used in industry. Its primary function is to transfer heat between two fluids at different temperatures while preventing direct contact between the two fluids. After prolonged use, the tubular heat exchanger requires cleaning or replacement of the pipes and the interior of the shell to prevent impurities from clogging the pipes. However, existing tubular heat exchangers utilize expansion and welding connections for the heat exchange tubes. This tedious disassembly process is particularly time-consuming and labor-intensive when the heat exchange tubes need to be regularly disassembled for cleaning, replacement, or repair. It also increases replacement costs and impacts the normal operation and production efficiency of the equipment.

[0003] Therefore, there is an urgent need for a detachable upper tube plate for a heat exchanger to solve the problems existing in the current technology. Utility Model Content

[0004] In view of this, the utility model proposes a detachable upper tube plate for a heat exchanger, aiming to solve the problem that the existing upper tube plate is cumbersome, time-consuming and labor-intensive to disassemble.

[0005] The utility model provides a detachable upper tube plate for a heat exchanger, comprising:

[0006] Upper tube plate body, heat exchange unit and limit unit;

[0007] The upper tube plate body is provided with heat exchange holes, and the heat exchange holes are provided with a plurality of;

[0008] A heat exchange unit is provided on several of the heat exchange holes, and the heat exchange unit includes a first heat exchange tube and a second heat exchange tube, the first heat exchange tube is fixedly connected to the heat exchange hole, and one end of the second heat exchange tube is connected to the first heat exchange tube, and the first heat exchange tube and the second heat exchange tube are used to circulate heat exchange fluid;

[0009] The limiting unit includes a docking portion and a clamping portion. The clamping portion is arranged on the first heat exchange tube, and the docking portion is arranged on the second heat exchange tube. The docking portion and the clamping portion are clamped with each other, and the first heat exchange tube and the second heat exchange tube are clamped with the docking portion through the clamping portion.

[0010] Furthermore, the clamping portion includes a first limiting ring, a first limiting hole and a sealing portion, the first limiting ring is arranged at one end of the first heat exchange tube, the first limiting ring is provided with a plurality of first limiting holes, and the sealing portion is inserted into the first heat exchange tube.

[0011] Furthermore, the sealing portion includes a first sealing gasket, a first sealing groove and a first sealing ring. The top of the first sealing gasket is fixedly connected to the first sealing ring, and the first sealing groove is equidistantly arranged on the outside of the first sealing ring.

[0012] Furthermore, the docking part includes a first docking tube, a second limiting ring and a fastening part. The inside of the second heat exchange tube is fixedly connected to the first docking tube. The front end of the first docking tube is provided with the fastening part, and the lower end of the fastening part is provided with the second limiting ring. The second limiting ring is used to prevent the fastening part from falling off.

[0013] Furthermore, the fastening portion includes a first fastener, a second fastener and a fastening strip, the outer side of the first fastener is provided with through holes arranged in a ring at equal intervals, the through holes pass through the first fastener, the second fastener is inserted into the through holes, the top of the second fastener passes through the through holes, and the fastening strip is provided at the bottom of the second fastener, and the fastening strip is used to limit the second fastener.

[0014] Furthermore, it also includes a guide part, which includes a first guide hole. There are a plurality of first guide holes, and the plurality of first guide holes are evenly arranged on both sides of the outer surface of the second heat exchange tube.

[0015] Furthermore, it also includes a first inclined surface, which is arranged at a 60° angle on one side of the plurality of first guide holes.

[0016] Furthermore, the guide portion further includes a second guide hole, and a plurality of the second guide holes are provided. The plurality of the second guide holes are evenly arranged on the middle outer surface of the second heat exchange tube.

[0017] Furthermore, it also includes a second inclined surface, which is arranged at 45 degrees on both sides of the plurality of second guide holes.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention splits and sets the heat exchange tubes, the first heat exchange tube is fixedly connected to the upper tube plate, the second heat exchange tube is clamped and connected to the first heat exchange tube, and the first heat exchange tube and the second heat exchange tube are sealed and fixed by the clamping part and the docking part, which improves the convenience of installing and removing the heat exchange tubes. Compared with the traditional welding or threaded connection method, the installation process is simplified, the installation time and cost are reduced, and when the heat exchange tube needs to be replaced or maintained, it is only necessary to remove the clamping connection part without the need to disassemble it through a tedious disassembly process, which improves the convenience and efficiency of maintenance and reduces the maintenance cost. At the same time, the first heat exchange tube and the second heat exchange tube are in high temperature and high pressure conditions for a long time, and the clamping connection method can disperse stress and reduce stress concentration points, thereby improving the mechanical strength and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An overall schematic diagram of a detachable upper tube plate for a heat exchanger provided in an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of a clamping portion in a detachable upper tube plate for a heat exchanger provided in an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of a docking portion in a detachable upper tube plate for a heat exchanger provided in an embodiment of the present utility model;

[0022] Figure 4 A schematic diagram of a sealing portion in a detachable upper tube plate for a heat exchanger provided in an embodiment of the present utility model;

[0023] Figure 5 A cross-sectional view showing the connection between the first heat exchange tube and the second heat exchange tube in the detachable upper tube plate for a heat exchanger provided in an embodiment of the present utility model;

[0024] Figure 6 Schematic diagram of the second heat exchange tube in the detachable upper tube plate for the heat exchanger provided in an embodiment of the utility model.

[0025] Among them: 1. upper tube plate body; 101. heat exchange hole; 2. heat exchange unit; 201. first heat exchange tube; 202. second heat exchange tube; 3. limiting unit; 301. docking part; 3011. first docking tube; 3012. second limiting ring; 3013. fastening part; 3014. first fastener; 3015. second fastener; 3016. fastening strip; 3017. through hole; 302. clamping part; 3021. first limiting ring; 3022. first limiting hole; 3023. sealing part; 3024. first sealing gasket; 3025. first sealing groove; 3026. first sealing ring; 4. flow guide part; 401. first flow guide hole; 402. first inclined surface; 403. second flow guide hole; 404. second inclined surface. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] The shell-and-tube heat exchanger is one of the most common heat exchangers currently used. Tubular heat exchangers transfer heat through the tube walls. They are the most widely used, offering advantages such as simple structure, durability, low cost, a wide range of materials, easy cleaning, and strong adaptability. They are the most widely used and dominate heat exchange equipment. They consist of a shell, tube bundle, header, tube sheet, baffles, and nozzles. Their structural characteristics are that two tube sheets are welded to each end of the shell, and the ends of the tube bundle are fixed to the tube sheets. The entire heat exchanger is divided into two parts: the channel inside the heat exchange tube and the intersection with the ends are called the tube side; the channel outside the heat exchange tube and the intersection with the ends are called the shell side. The cold and hot fluids flow continuously in the tube side and shell side respectively. The fluid flowing through the tube side is called the tube (tube side) fluid, and the fluid flowing through the shell side is called the shell (shell side) fluid. However, the heat exchange tubes of existing heat exchangers are first expanded and then welded. When the heat exchange tubes need to be disassembled, it takes time and effort to remove the expansion tubes. When multiple heat exchange tubes need to be disassembled, the workload and time will be very large, which will affect the working efficiency of the heat exchanger and bring many inconveniences.

[0031] Therefore, there is an urgent need for a technology that can solve the problem that the removal of heat exchange tubes is time-consuming and laborious.

[0032] See Figure 1 As shown, this embodiment provides a detachable upper tube plate for a heat exchanger, comprising: an upper tube plate body 1, a heat exchange unit 2 and a limiting unit 3;

[0033] The upper tube plate body 1 is provided with heat exchange holes 101, and the heat exchange holes 101 are provided with a plurality of;

[0034] A heat exchange unit 2 is provided on the plurality of heat exchange holes 101. The heat exchange unit 2 includes a first heat exchange tube 201 and a second heat exchange tube 202. The first heat exchange tube 201 is fixedly connected to the heat exchange hole 101. One end of the second heat exchange tube 202 is connected to the first heat exchange tube 201. The first heat exchange tube 201 and the second heat exchange tube 202 are used to circulate heat exchange fluid.

[0035] The limiting unit 3 includes a docking portion 301 and a clamping portion 302. The clamping portion 302 is arranged on the first heat exchange tube 201, and the docking portion 301 is arranged on the second heat exchange tube 202. The docking portion 301 and the clamping portion 302 are clamped to each other, and the first heat exchange tube 201 and the second heat exchange tube 202 are clamped together through the clamping portion 302 and the docking portion 301.

[0036] Specifically, a heat exchange hole 101 is provided on the heat exchanger body, one end of the first heat exchange tube 201 is fixedly connected to the heat exchange hole 101, the other end of the first heat exchange tube 201 is fixedly connected to the clamping portion 302, and one end of the second heat exchange tube 202 is fixedly connected to the docking portion 301. The first heat exchange tube 201 and the second heat exchange tube 202 are sealed and clamped together by the clamping portion 302 and the docking portion 301. When the heat exchange tube needs to be installed, the first heat exchange tube 201 is first connected by expansion and then welded. The heat exchange hole 101 is fixed. Secondly, the docking portion 301 on the second heat exchange tube 202 cooperates with the clamping portion 302 to complete the sealed connection between the first heat exchange tube 201 and the second heat exchange tube 202. When the heat exchange tube needs to be cleaned and disassembled, it is only necessary to disconnect the docking portion 301 and the clamping portion 302 to remove the second heat exchange tube 202 for replacement or cleaning. Since the first heat exchange tube 201 is a short tube, its diameter is slightly larger than that of the second heat exchange tube 202, and a high-pressure water gun can be used to clean the first heat exchange tube 201.

[0037] It is understood that the multiple heat exchange holes 101 provided on the upper tube plate body 1 allow for flexible configuration of heat exchange units 2 of varying numbers and specifications based on actual needs, thereby enhancing the scalability and applicability of the device. Furthermore, the fixed connection of the first heat exchange tube 201 to the heat exchange hole 101, and the removable connection of the second heat exchange tube 202 to the first heat exchange tube 201, make the entire heat exchange unit 2 more flexible and efficient, simplifying the installation and removal of the heat exchanger. By first performing an expansion joint and then welding to secure the first heat exchange tube 201 to the heat exchange hole 101, this installation method ensures a secure and leak-tight connection. The mating portion 301 on the second heat exchange tube 202, in conjunction with the clamping portion 302 on the first heat exchange tube 201, significantly simplifies the installation and removal of the heat exchange unit 2. A simple clamping operation is all that is required to connect and disconnect the heat exchange tubes. This reduces the time and labor costs associated with installation and maintenance when the heat exchange tubes need to be replaced or cleaned. Since the first heat exchange tube 201 and the heat exchange hole 101 are fixed by welding, the reliability and durability of the connection are enhanced, and the long-term stable operation of the heat exchanger can be guaranteed even in a high-temperature and high-pressure working environment. Since the first heat exchange tube 201 is a short tube, its diameter is slightly larger than that of the second heat exchange tube 202, making it very convenient and efficient to clean it using cleaning equipment such as a high-pressure water gun. Compared with the traditional heat exchanger that needs to be disassembled as a whole for cleaning, this design only requires the disassembly of the second heat exchange tube 202, leaving the first heat exchange tube 201 on the heat exchanger body, reducing the workload and time of cleaning. At the same time, due to the short tube design of the first heat exchange tube 201, the retention of heat exchange fluid in the tube is also reduced, the risk of scaling is reduced, and the cleaning efficiency of the heat exchanger is improved. When replacement or maintenance is required, only the damaged part needs to be replaced, without having to replace the entire heat exchange unit 2, which not only reduces material waste, but also reduces the cost of maintenance and replacement.

[0038] In some embodiments of this application, see Figure 2 As shown, the clamping portion 302 includes a first limiting ring 3021, a first limiting hole 3022 and a sealing portion 3023. The first limiting ring 3021 is arranged at one end of the first heat exchange tube 201. Several first limiting holes 3022 are opened on the first limiting ring 3021. The sealing portion 3023 is inserted into the first heat exchange tube 201.

[0039] Specifically, the clamping part 302 arranged on the first heat exchange tube 201 includes a first limiting ring 3021, a first limiting hole 3022 and a sealing part 3023. The first limiting ring 3021 is arranged on the outer surface of the end of the first heat exchange tube 201 away from the heat exchange hole 101. A plurality of first limiting holes 3022 are arranged on the first limiting ring 3021. The first limiting holes 3022 are used to cooperate with the docking part 301 to realize the sealing and fixation of the first heat exchange tube 201 and the second heat exchange tube 202. The sealing part 3023 is arranged in the first heat exchange tube 201. The position of the sealing part 3023 is located below the first limiting ring 3021. When the second heat exchange tube 202 is inserted into the first heat exchange tube 201, the front end of the second heat exchange tube 202 is in contact with the sealing part 3023.

[0040] It is understood that the first limiting ring 3021 is provided on the outer surface of the end of the first heat exchange tube 201 away from the heat exchange hole 101, and the first limiting ring 3021 is provided with a plurality of first limiting holes 3022, which provide clear limiting points for the installation and removal of the second heat exchange tube 202. The sealing portion 3023 is inserted into the first heat exchange tube 201, located below the first limiting ring 3021, ensuring that the front end of the second heat exchange tube 202 can fit the sealing portion 3023 when inserted, forming a sealing effect. The docking portion 301 at one end of the second heat exchange tube 202 cooperates with the first limiting holes 3022, allowing the second heat exchange tube 202 to be quickly and accurately inserted into the first heat exchange tube 201, achieving efficient installation. When disassembly is required, a simple operation is required to disconnect the docking portion 301 from the first limiting holes 3022, and the second heat exchange tube 202 can be easily removed. This not only reduces the time and labor intensity of installation and disassembly, but also avoids the installation errors and disassembly difficulties that may exist in traditional welding and threaded connections. The sealing portion 3023 is located within the first heat exchange tube 201. When the second heat exchange tube 202 is inserted, its front end fits tightly against the sealing portion 3023, forming a sealing surface. The cooperation between the first retaining ring 3021 and the first retaining hole 3022 further enhances the sealing effect, preventing leakage of the heat exchange fluid. This double-layer seal not only improves the sealing performance of the device but also maintains stable operation in high-temperature and high-pressure operating environments, ensuring the long-term reliability of the device.

[0041] In some embodiments of this application, see Figure 4-Figure 5As shown, the sealing portion 3023 includes a first sealing gasket 3024 , a first sealing groove 3025 and a first sealing ring 3026 . The top of the first sealing gasket 3024 is fixedly connected to the first sealing ring 3026 , and the first sealing groove 3025 is equidistantly arranged on the outside of the first sealing ring 3026 .

[0042] Specifically, the sealing part 3023 includes a first sealing gasket 3024, a first sealing groove 3025 and a first sealing ring 3026. When used, it is placed between the clamping mechanism and the docking mechanism on the inner side of the first docking tube 3011 and the second docking tube. The first sealing gasket 3024 fits the inside of the first heat exchange tube 201 and the second heat exchange tube 202 to achieve preliminary sealing. The first sealing ring 3026 is inserted into the internal groove of the first heat exchange tube 201, and the insertion with the first heat exchange tube 201 can improve the sealing performance. The first sealing groove 3025 and the first sealing ring 3026 on the outer surface between the first sealing ring 3026 and the first sealing ring 3026 are interlocked and fitted with each other, further enhancing the overall sealing performance. The sealing ring body is composed of an elastic aerogel layer, a heat-resistant silicone layer and a polyimide layer. The elastic aerogel layer ensures the sealing stability and durability. The heat-resistant silicone layer makes the sealing ring resistant to high temperature and not easy to age and deform. The polyimide layer increases the strength and chemical corrosion resistance.

[0043] It is understood that the sealing portion 3023 includes a first sealing gasket 3024, a first sealing groove 3025, and a first sealing ring 3026, which ensures a more reliable sealing effect. The first sealing gasket 3024 fits within the first heat exchange tube 201 and the second heat exchange tube 202 to achieve a preliminary seal. The first sealing ring 3026 inserts into the internal groove of the first heat exchange tube 201, further enhancing the sealing performance. The interlocking and fitting between the first sealing groove 3025 and the first sealing ring 3026 ensures the tightness and stability of the overall seal. This multi-layered sealing not only makes the device structure more compact and rational, but also enhances the sealing effect of the entire joint and reduces the possibility of leakage. Sealing performance is one of the core issues in heat exchanger design. The first sealing gasket 3024 ensures a preliminary seal, preventing initial leakage of the heat exchange fluid at the joint. Secondly, the first sealing ring 3026 inserts into the internal groove of the first heat exchange tube 201, further enhancing the sealing effect and making the seal at the joint more tight. Finally, the first sealing groove 3025 and the first sealing ring 3026 fit together and fit together to form a continuous sealing surface, which effectively prevents leakage. It not only ensures a good sealing effect under static conditions, but also maintains stable sealing performance under dynamic working environments.

[0044] The sealing ring is composed of an elastic aerogel layer, a heat-resistant silicone layer, and a polyimide layer. The elastic aerogel layer ensures a stable and durable seal. Its high elasticity and excellent compression rebound properties enable the sealing ring to maintain its original sealing effect even after long-term use. The heat-resistant silicone layer makes the sealing ring resistant to high temperatures and resists aging and deformation, adapting to the high-temperature operation requirements of the heat exchanger. The polyimide layer increases the sealing ring's strength and chemical resistance, allowing it to maintain good performance even in complex chemical environments.

[0045] In some embodiments of this application, see Figure 3 As shown, the docking part 301 includes a first docking tube 3011, a second limiting ring 3012 and a fastening part 3013. The first docking tube 3011 is fixedly connected to the inside of the second heat exchange tube 202. The front end of the first docking tube 3011 is provided with a fastening part 3013, and the lower end of the fastening part 3013 is provided with a second limiting ring 3012. The second limiting ring 3012 is used to prevent the fastening part 3013 from falling off.

[0046] Specifically, the docking part 301 is arranged on the second heat exchange tube 202, and a fastening part 3013 is provided on the outer surface of one end of the second heat exchange tube 202. A second limiting ring 3012 is provided below the fastening part 3013. The second limiting ring 3012 is used to prevent the fastening part 3013 from falling off. The first docking tube 3011 is arranged inside the second heat exchange tube 202 and is fixedly connected to the second heat exchange tube 202. When the second heat exchange tube 202 is plugged into the first heat exchange tube 201, the first docking tube 3011 fits the first sealing gasket 3024, and the fastening part 3013 is connected to the first limiting ring 3021.

[0047] It is understood that the second heat exchange tube 202 is internally fixedly connected to the first butt joint 3011, and a fastening portion 3013 and a second retaining ring 3012 are provided on the outer surface. The first butt joint 3011 fits the first sealing gasket 3024, ensuring a preliminary seal. The connection between the fastening portion 3013 and the first retaining ring 3021 further enhances the sealing effect. The second retaining ring 3012 prevents the fastening portion 3013 from falling off, ensuring the stability of the connection, improving the sealing and stability of the connection, and reducing the possibility of leakage. When the second heat exchange tube 202 is inserted into the first heat exchange tube 201, the first butt joint 3011 fits the first sealing gasket 3024, and the fastening portion 3013 connects to the first retaining ring 3021. This process is very simple and quick, and does not require complex tools or long-term operation. When disassembly is required, only a simple operation is required to disconnect the fastening part 3013 from the first limiting ring 3021, and the second heat exchange tube 202 can be taken out, which not only reduces the time and labor intensity of installation and disassembly, but also avoids the installation errors and disassembly difficulties that may exist in traditional welding and threaded connections.

[0048] In some embodiments of the present application, the fastening portion 3013 includes a first fastener 3014, a second fastener 3015 and a fastening strip 3016. The outer side of the first fastener 3014 is provided with through holes 3017 arranged in a ring at equal intervals. The through holes 3017 pass through the first fastener 3014. The second fastener 3015 is inserted into the through hole 3017. The top of the second fastener 3015 passes through the through hole 3017. The bottom of the second fastener 3015 is provided with a fastening strip 3016. The fastening strip 3016 is used to limit the second fastener 3015.

[0049] Specifically, the fastening portion 3013 includes a first fastener 3014, a second fastener 3015 and a fastening strip 3016. The outer side of the first fastener 3014 is provided with through holes 3017 arranged in a ring at equal intervals. The second fastener 3015 is inserted into the through hole 3017. The second fastener 3015 is arranged through the through hole 3017. The bottom of the second fastener 3015 is provided with a fastening strip 3016. The second fastener 3015 is fixedly connected to the fastening strip 3016. When the clamping portion 302 is connected to the docking portion 301 When clamping, the first fastener 3014 fits with the first limiting ring 3021, the through hole 3017 on the first fastener 3014 corresponds to the first limiting hole 3022 on the first limiting ring 3021, and the first fastener 3014 is inserted through the through hole 3017 and the first limiting hole 3022, so that the first fastener 3014 is fastened to the first limiting ring 3021. At the same time, the fastening strip 3016 is arranged on the through hole 3017 on the side of the first fastener 3014, which is used to limit the second fastener 3015.

[0050] As can be understood, the outer side of the first fastener 3014 is provided with through holes 3017 arranged in a circular pattern at equal intervals. Second fasteners 3015 are inserted into through holes 3017, which extend through through holes 3017 and are fixedly connected to the fastening strip 3016. This not only makes the structure of the entire fastening portion 3013 more compact and rational, but also ensures the firmness and stability of the connection. The fit between the first fastener 3014 and the first retaining ring 3021, and the precise alignment between the through holes 3017 and the retaining holes, allows the second heat exchange tube 202 to be quickly and accurately tightened when inserted into the first heat exchange tube 201, preventing loosening and leakage.

[0051] When the second heat exchange tube 202 is inserted into the first heat exchange tube 201, the first fastener 3014 fits against the first limiting ring 3021. By inserting the second fastener 3015 into the corresponding first limiting hole 3022, quick fixation is achieved. This not only simplifies the operating steps and reduces installation time and labor intensity, but also avoids installation errors that may exist in traditional welding and threaded connections. The fit of the first fastener 3014 and the first limiting ring 3021, and the cooperation of the second fastener 3015 and the first limiting hole 3022, form a stable connection point that can maintain good performance during long-term use. The fastening strip 3016 further enhances the stability of the connection point and prevents loosening due to external forces. It not only performs stably in high temperature and high pressure environments, but also maintains good performance in complex chemical environments, thereby improving the durability and reliability of the entire heat exchanger. The fit between the first fastener 3014 and the first limiting ring 3021, and the cooperation between the second fastener 3015 and the first limiting hole 3022, make the seal at the connection more firm and reliable, prevent the leakage of the heat exchange fluid, and reduce safety hazards. The provision of the fastening strip 3016 ensures the stability of the second fastener 3015 at the connection, preventing loosening due to fluid impact or other external forces. In addition, no complicated welding operation is required when disassembling the second heat exchange tube 202, reducing the risk of contact for operators and improving overall safety. Under high pressure and high temperature environments, the sealing performance and connection stability remain good, further ensuring the safe operation of the equipment. At the same time, the fastening portion 3013 can be applied to a variety of different types of heat exchangers. Whether it is a plate heat exchanger, a shell and tube heat exchanger or a heat exchanger with other special structures, this fastening portion 3013 can be used to achieve quick installation and disassembly.

[0052] In some embodiments of this application, see Figure 6 As shown, it also includes a guide part 4, which includes a first guide hole 401. There are a plurality of first guide holes 401, and the plurality of first guide holes 401 are evenly arranged on both sides of the outer surface of the second heat exchange tube 202.

[0053] In some embodiments of the present application, a first inclined surface 402 is further included. The first inclined surface 402 is arranged at a 60° angle on one side of the plurality of first guide holes 401 .

[0054] It can be understood that the first flow guide hole 401 helps to evenly distribute the shell side fluid and improve the heat exchange efficiency. When the shell side fluid enters the shell, it is spread around the heat exchange tube through the holes, which can reduce the problem of fluid short circuit and increase the chance of contact between the fluid and the heat exchange tube, thereby increasing the heat exchange area and heat exchange efficiency. Under high temperature or high temperature difference working conditions, the first flow guide hole 401 can serve as a thermal expansion mitigation measure, helping to reduce the thermal stress caused by thermal expansion and contraction, thereby improving the stability and service life of the equipment. At the same time, it can also change the flow state of the fluid from laminar flow to turbulent flow, thereby enhancing the disturbance of the fluid flow. Fluid in a turbulent state is more conducive to heat transfer because turbulence can reduce the thickness of the boundary layer and increase the heat exchange rate between the fluid and the heat exchange surface.

[0055] In some embodiments of the present application, the guide portion 4 further includes a second guide hole 403 . A plurality of second guide holes 403 are provided, and the plurality of second guide holes 403 are evenly arranged on the middle outer surface of the second heat exchange tube 202 .

[0056] In some embodiments of the present application, a second inclined surface 404 is further included. The second inclined surface 404 is arranged at 45° on both sides of the plurality of second guide holes 403 .

[0057] Specifically, the diameter of the second flow guide hole 403 is larger than that of the first flow guide hole 401, and second inclined surfaces 404 are provided on both sides of the second flow guide hole 403. Compared with the first flow guide hole 401 having an inclined surface only on one side, the second flow guide hole 403 can further enhance the turbulence of the fluid, increase the heat exchange area and heat exchange efficiency.

[0058] It is understood that the first guide holes 401 are evenly arranged on both sides of the outer surface of the second heat exchange tube 202, and the second guide holes 403 are evenly arranged on the central outer surface of the second heat exchange tube 202, so that the fluid can be more evenly distributed on its surface when entering and passing through the heat exchange tube, thereby improving the heat exchange efficiency. The first inclined surface 402 is arranged at 60 degrees on one side of the first guide hole 401, and the second inclined surface 404 is arranged at 45 degrees on both sides of the second guide hole 403. This not only facilitates the smooth flow of the fluid, but also reduces the retention and accumulation of the fluid at the guide holes, further improving the heat exchange effect. The design of the first guide hole 401 and the first inclined surface 402 allows the fluid to be evenly distributed on its surface when entering or contacting the second heat exchange tube 202, reducing the situation where the local flow rate is too fast or too slow, and improving the heat exchange effect of the fluid. The second guide hole 403 further optimizes the flow path of the fluid. Its larger diameter and 45° inclined surfaces on both sides enhance the fluid's turbulence, allowing the fluid to better disperse and exchange heat in the middle of the heat exchange tube, reducing fluid retention and accumulation, and improving the fluid's flow efficiency. The design of the first guide hole 401 and the first inclined surface 402 allows the fluid to evenly contact the surface of the heat exchange tube, increasing the heat exchange area and improving the efficiency of heat transfer. Secondly, the second guide hole 403 and the second inclined surface 404 further optimize the fluid's flow path, enhance the fluid's turbulence, and further improve the uniformity of heat transfer. The larger diameter of the second guide hole 403 allows more fluid to pass through, increasing the heat exchange area and improving the heat exchange efficiency. The combination of the first guide hole 401 and the first inclined surface 402, the second guide hole 403 and the second inclined surface 404 reduces the impact force and friction loss of the fluid at the guide hole, extending the service life of the heat exchange tube. The design of the first flow guide hole 401 ensures that the fluid is evenly distributed across its surface, reducing localized wear and improving the durability of the heat exchange tube. The second flow guide hole 403 has a larger diameter and features 45° slopes on both sides, further reducing fluid impact and frictional losses, thus preventing equipment performance degradation due to wear.

[0059] A heat exchanger in each of the above embodiments uses a detachable upper tube plate to split the heat exchange tubes. The first heat exchange tube is fixedly connected to the upper tube plate, and the second heat exchange tube is connected to the first heat exchange tube by a clip. The first heat exchange tube and the second heat exchange tube are sealed and fixed by the clip part and the docking part, which improves the convenience of installing and removing the heat exchange tubes. Compared with traditional welding or threaded connection methods, the installation process is simplified, and the installation time and cost are reduced. When the heat exchange tube needs to be replaced or maintained, it is only necessary to remove the clip-connected part without going through a tedious disassembly process, which improves the convenience and efficiency of maintenance and reduces maintenance costs. At the same time, the first heat exchange tube and the second heat exchange tube are in high temperature and high pressure conditions for a long time, and the clip connection method can disperse stress and reduce stress concentration points, thereby improving the mechanical strength and service life of the equipment.

[0060] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A detachable upper tube plate for a heat exchanger, characterized in that: include: Upper tube plate body, heat exchange unit and limit unit; The upper tube plate body is provided with heat exchange holes, and the heat exchange holes are provided with a plurality of; A heat exchange unit is provided on several of the heat exchange holes, and the heat exchange unit includes a first heat exchange tube and a second heat exchange tube, the first heat exchange tube is fixedly connected to the heat exchange hole, and one end of the second heat exchange tube is connected to the first heat exchange tube, and the first heat exchange tube and the second heat exchange tube are used to circulate heat exchange fluid; The limiting unit includes a docking portion and a clamping portion. The clamping portion is arranged on the first heat exchange tube, and the docking portion is arranged on the second heat exchange tube. The docking portion and the clamping portion are clamped with each other, and the first heat exchange tube and the second heat exchange tube are clamped with the docking portion through the clamping portion.

2. The detachable upper tube plate for heat exchanger according to claim 1, characterized in that: The clamping portion includes a first limiting ring, a first limiting hole and a sealing portion. The first limiting ring is arranged at one end of the first heat exchange tube. The first limiting ring is provided with a plurality of first limiting holes. The sealing portion is inserted into the first heat exchange tube.

3. The detachable upper tube plate for heat exchanger according to claim 2, characterized in that: The sealing portion includes a first sealing gasket, a first sealing groove and a first sealing ring. The top of the first sealing gasket is fixedly connected to the first sealing ring, and the first sealing grooves are equidistantly arranged on the outside of the first sealing ring.

4. The detachable upper tube plate for a heat exchanger according to claim 1, characterized in that: The docking part includes a first docking tube, a second limiting ring and a fastening part. The interior of the second heat exchange tube is fixedly connected to the first docking tube. The front end of the first docking tube is provided with the fastening part, and the lower end of the fastening part is provided with the second limiting ring. The second limiting ring is used to prevent the fastening part from falling off.

5. The detachable upper tube plate for a heat exchanger according to claim 4, characterized in that: The fastening portion includes a first fastener, a second fastener and a fastening strip. The outer side of the first fastener is provided with through holes arranged in a ring at equal intervals. The through holes penetrate the first fastener. The second fastener is inserted into the through holes. The top of the second fastener penetrates the through holes. The fastening strip is provided at the bottom of the second fastener. The fastening strip is used to limit the second fastener.

6. The detachable upper tube plate for a heat exchanger according to claim 1, characterized in that: It also includes a guide part, which includes a first guide hole. There are a plurality of first guide holes, and the plurality of first guide holes are evenly arranged on both sides of the outer surface of the second heat exchange tube.

7. The detachable upper tube plate for a heat exchanger according to claim 6, characterized in that: The first inclined surface is provided at an angle of 60 degrees on one side of the first guide holes.

8. The detachable upper tube plate for a heat exchanger according to claim 6, characterized in that: The guide portion further includes a second guide hole, and a plurality of the second guide holes are provided. The plurality of the second guide holes are evenly arranged on the middle outer surface of the second heat exchange tube.

9. The detachable upper tube plate for a heat exchanger according to claim 8, characterized in that: It also includes a second inclined surface, which is arranged at 45 degrees on both sides of the plurality of second guide holes.

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