A large temperature difference heat exchange system

Abstract

This disclosure relates to the field of heat exchange technology. One embodiment of this disclosure provides a large temperature difference heat exchange system, which includes: a heat exchange tank with heat exchange tubes disposed inside, a heat exchange cleaning assembly disposed inside the heat exchange tank, and a support plug assembly disposed on the lower end face of the heat exchange tank; the heat exchange cleaning assembly includes a circulation chamber, a cleaning hole is provided on the lower end face of the heat exchange tank, a cleaning pipe is connected between the cleaning hole and the cleaning port, and a sealing plug is disposed inside the cleaning pipe. Through the above technical solution, some limitations of traditional heat exchange systems in the prior art in large temperature difference heat exchange are solved. On the one hand, the structure and design of traditional heat exchangers may not be able to adapt to the high-efficiency heat exchange requirements under large temperature difference conditions, resulting in low heat exchange efficiency and large heat loss. On the other hand, under large temperature difference conditions, the physical properties of the heat exchange medium change significantly, which may cause problems such as scaling and corrosion, affecting the performance and service life of the heat exchanger.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of heat exchange technology, and more specifically, to a large temperature difference heat exchange system. Background Technology

[0002] In industrial production and daily life, the transfer and exchange of heat energy is a common and important process. Large temperature difference heat exchange systems have wide applications in many fields, such as centralized heating, refrigeration and air conditioning, chemical industry, metallurgy and other industries.

[0003] In the field of centralized heating, with the continuous expansion of urban scale and the increasing heating area year by year, the pressure on urban heating pipe networks is also increasing. In traditional heating systems, the primary network return water temperature is relatively high. For example, in northern cities, the primary network water temperature is above 90℃, and the return water temperature is above 50℃. This causes a large amount of heat to return to the power plant with the return water, which is not only not fully utilized, but also has an adverse effect on the power plant's cooling system. At the same time, in refrigeration and air conditioning systems, efficient heat exchange systems are also needed to transfer heat to achieve a comfortable indoor environment. In industrial fields such as chemical and metallurgical processes, a large amount of high-temperature waste heat is generated during production. It is necessary to recover and utilize this waste heat through large temperature difference heat exchange systems to improve energy utilization and reduce production costs.

[0004] However, traditional heat exchange systems have some limitations in large temperature difference heat exchange. On the one hand, the structure and design of traditional heat exchangers may not be able to meet the high-efficiency heat exchange requirements under large temperature difference conditions, resulting in low heat exchange efficiency and large heat loss. On the other hand, under large temperature difference conditions, the physical properties of the heat exchange medium change significantly, which may cause problems such as scaling and corrosion, affecting the performance and service life of the heat exchanger. In addition, traditional heat exchange systems have a low degree of automation and it is difficult to make real-time adjustments and optimizations according to changes in actual operating conditions, thus failing to fully realize the advantages of large temperature difference heat exchange.

[0005] To address these issues, researchers have been continuously studying and developing new large temperature difference heat exchange systems to improve heat exchange efficiency, reduce energy consumption, extend equipment lifespan, and achieve automated control and optimized operation of the system. This includes adopting new heat exchange materials and structures, improving heat exchanger design, and developing intelligent control systems. This new large temperature difference heat exchange system was developed in this context, aiming to provide a more efficient, reliable, and energy-saving heat exchange solution to meet the needs of different fields for large temperature difference heat exchange. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a large temperature difference heat exchange system, which solves some limitations of the traditional heat exchange system in the prior art in terms of large temperature difference heat exchange. On the one hand, the structure and design of traditional heat exchangers may not be able to meet the high-efficiency heat exchange requirements under large temperature difference conditions, resulting in low heat exchange efficiency and large heat loss. On the other hand, under large temperature difference conditions, the physical properties of the heat exchange medium change greatly, which may cause problems such as scaling and corrosion, affecting the performance and service life of the heat exchanger.

[0007] According to one aspect, at least one embodiment of this disclosure provides a large temperature difference heat exchange system, comprising:

[0008] A heat exchange tank, wherein heat exchange tubes are provided inside the heat exchange tank;

[0009] A heat exchange cleaning assembly is disposed inside the heat exchange tank;

[0010] A support plug-in assembly is disposed on the lower end face of the heat exchange tank;

[0011] The heat exchange cleaning assembly includes a circulation chamber located inside the heat exchange tank. A filter screen is installed inside the circulation chamber. A circulation connecting pipe is installed on the upper end face of the heat exchange tank. A curved pipe is connected to the heat exchange pipe. A cleaning port is opened at the bottom of the curved pipe. A cleaning hole is installed on the lower end face of the heat exchange tank. A cleaning pipe is connected between the cleaning hole and the cleaning port. A sealing plug is installed inside the cleaning pipe.

[0012] As a further technical solution, a sealing ring is provided inside the cleaning tube, and the sealing plug is sealed and inserted into the sealing ring. A longitudinal groove is provided on the inner side wall of the cleaning tube, and a locking groove is provided on the inner side wall of the longitudinal groove. A locking shaft is provided on the side wall of the sealing plug, and the locking shaft is embedded inside the longitudinal groove.

[0013] As a further technical solution, the support plug assembly includes a support platform, which is disposed on the lower end face of the heat exchange tank. The cleaning port penetrates through the support platform, and a support leg is provided on the lower end face of the support platform. An extended support foot is provided on the side wall of the support leg.

[0014] As a further technical solution, the supporting leg has an arc groove, the upper end of the arc groove has a connecting groove, the upper end of the connecting groove has a rectangular groove, the side wall of the extended supporting leg has a plug-in block, the lower end of the plug-in block has an arc block, the arc block matches the structure of the arc groove, and the plug-in block matches the structure of the rectangular groove.

[0015] As a further technical solution, a control panel is provided on the lower end face of the cleaning tube, and a sealing shaft is provided on the upper end face of the cleaning tube, wherein the sealing shaft and the sealing ring are sealed and inserted together.

[0016] As a further technical solution, the end of the heat exchange tube extends out of the heat exchange tank, and a connecting flange is provided on both the end of the heat exchange tube and the circulation connecting pipe.

[0017] As a further technical solution, a sampling tube is provided on the upper end face of the heat exchange tank, the sampling tube is connected to the heat exchange tube, and a sealing connection mounting plate is provided on the upper end of the sampling tube.

[0018] As a further technical solution, the number of supporting legs is several, and multiple supporting legs are arranged at the four corners of the lower end face of the support platform, with each supporting leg having an extended supporting foot mounted on its side wall.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the heat exchange tubes in the heat exchange tank form a circulation loop through the bending tube and the circulation connecting tube. With the filter screen in the circulation chamber, the hot and cold media can be guided to form turbulent flow under large temperature difference, reducing dead volume and thermal resistance, and increasing the heat exchange per unit area. For example, in the case of centralized heating, the temperature difference between the primary network and the secondary network can be increased from the traditional 40℃ to more than 60℃, which significantly improves the energy utilization rate.

[0021] 2. In this disclosure, the cleaning port at the bottom of the bent tube is connected to the cleaning hole at the bottom of the heat exchange tank through the cleaning tube. When impurities (such as rust and sediment) accumulate in the medium, they can be quickly discharged by disassembling the sealing plug (with the guide locking structure of the longitudinal groove and the locking shaft), thus avoiding blockage of the heat exchange tube. Compared with the traditional manual disassembly and cleaning method, the maintenance efficiency is improved by more than 50%, and there is no need to stop the machine for too long, reducing production interruption losses. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is a cross-sectional view of the heat exchanger tank disclosed herein;

[0025] Figure 3 This is a cross-sectional view of the cleaning pipe disclosed herein;

[0026] Figure 4 This is an isometric view of the supporting foot of this disclosure;

[0027] In the diagram: 1. Heat exchange tank; 2. Heat exchange tube; 3. Heat exchange cleaning assembly; 3-1. Circulation chamber; 3-2. Filter screen; 3-3. Circulation connecting pipe; 3-4. Bend pipe; 3-5. Cleaning port; 3-6. Cleaning hole; 3-7. Cleaning pipe; 3-8. Sealing plug; 3-9. Sealing ring; 3-10. Longitudinal groove; 3-11. Locking groove; 3-12. Locking shaft; 4. Support plug assembly; 4-1. Support platform; 4-2. Support leg; 4-3. Extended support leg; 4-4. Arc groove; 4-5. Connecting groove; 4-6. Rectangular groove; 4-7. Plug block; 4-8. Arc block; 5. Control panel; 6. Sealing shaft; 7. Connecting flange; 8. Sampling tube; 9. Sealing connection mounting plate. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, it illustrates a large temperature difference heat exchange system of this disclosure, comprising:

[0035] Heat exchange tank 1, with heat exchange tubes 2 installed inside heat exchange tank 1;

[0036] Heat exchange cleaning component 3 is installed inside heat exchange tank 1;

[0037] Support plug-in assembly 4 is provided on the lower end face of heat exchange tank 1;

[0038] The heat exchange cleaning assembly 3 includes a circulation chamber 3-1, which is located inside the heat exchange tank 1. A filter screen 3-2 is installed inside the circulation chamber 3-1. A circulation connecting pipe 3-3 is installed on the upper end face of the heat exchange tank 1. A bent pipe 3-4 is connected to the heat exchange tube 2. A cleaning port 3-5 is opened at the bottom of the bent pipe 3-4. A cleaning hole 3-6 is installed on the lower end face of the heat exchange tank 1. A cleaning pipe 3-7 is connected between the cleaning hole 3-6 and the cleaning port 3-5. A sealing plug 3-8 is installed inside the cleaning pipe 3-7.

[0039] The support plug assembly 4 includes a support platform 4-1, which is located on the lower end face of the heat exchange tank 1. The cleaning port 3-5 passes through the support platform 4-1. The lower end face of the support platform 4-1 is provided with a support foot 4-2, and the side wall of the support foot 4-2 is provided with an extended support foot 4-3.

[0040] In some examples, heat exchange tank 1 is the main container of the entire system, containing heat exchange tubes 2. It provides space for heat exchange, holds the heat exchange medium, and protects the heat exchange tubes 2 and other components from external environmental influences. Heat exchange tubes 2 are the core component for heat exchange; two fluids at different temperatures flow inside and outside the tubes, respectively, transferring heat through the tube walls to achieve large temperature difference heat exchange. Circulation chamber 3-1, located inside heat exchange tank 1, provides a channel for the circulation of the heat exchange medium, allowing it to flow within the system and achieve heat transfer and exchange. A filter plate 3-2 filters the medium in circulation chamber 3-1, preventing impurities and particles from entering the heat exchange tubes 2 or other components, avoiding blockage and wear, and ensuring normal system operation. Circulation connecting pipe 3-3 connects the heat exchange tubes 2 and circulation chamber 3-1, allowing the heat-exchanged medium to return to circulation chamber 3-1, forming a circulation loop and ensuring continuous heat exchange. A bent pipe 3-4 connects the heat exchange tubes 2 and cleaning port 3-5, guiding the medium inside the heat exchange tubes 2 to… Cleaning port 3-5 facilitates cleaning operations. Located at the bottom of the curved tube 3-4, cleaning port 3-5 is the outlet for the medium flowing out of heat exchange tube 2 and into cleaning tube 3-7, and also the inlet for external cleaning media or tools to enter heat exchange tube 2 during cleaning. Cleaning hole 3-6 is located on the lower end face of heat exchange tank 1 and is connected to cleaning port 3-5 through cleaning tube 3-7. It serves as the connection channel between cleaning tube 3-7 and heat exchange tank 1, used to discharge impurities and dirt from inside heat exchange tube 2. Cleaning tube 3-7 connects cleaning port 3-5 and cleaning hole 3-6. The cleaning pipe 3-7 provides a channel for cleaning media or tools, allowing dirt and other contaminants inside the heat exchange tube 2 to be discharged from the heat exchange tank 1. The sealing plug 3-8 is used to seal the cleaning pipe 3-7 to prevent the heat exchange medium from leaking from the cleaning pipe 3-7 during normal operation, ensuring the system's sealing and normal operation. When cleaning is required, the sealing plug 3-8 can be opened, and the sealing ring 3-9 cooperates with the sealing plug 3-8 to enhance the sealing of the cleaning pipe 3-7, ensuring that the medium will not leak from the connection between the sealing plug 3-8 and the cleaning pipe 3-7.

[0041] The support platform 4-1 is located on the lower end face of the heat exchange tank 1 to support the heat exchange tank 1 and transfer the weight of the heat exchange tank 1 to the support legs 4-2, ensuring the stability of the heat exchange tank 1. The support legs 4-2 support the support components on the lower end face of the support platform 4-1, and there are several of them. They are usually located at the four corners of the lower end face of the support platform 4-1 to provide stable support for the heat exchange tank 1, so that the heat exchange tank 1 can be placed stably on the ground or other foundation. The extended support feet 4-3 are located on the side wall of the support legs 4-2 and are connected to the support legs 4-2 through the plug-in blocks 4-7 to increase the support area and improve the stability and load-bearing capacity of the entire support plug-in assembly 4. The sampling tube 8 is connected to the heat exchange tube 2, and a medium sample can be taken out from the heat exchange tube 2 to facilitate the detection and analysis of parameters such as the composition, temperature, and pressure of the heat exchange medium.

[0042] like Figures 1-4As shown, in this embodiment, a sealing ring 3-9 is provided inside the cleaning tube 3-7, and a sealing plug 3-8 is sealed and inserted into the sealing ring 3-9. A longitudinal groove 3-10 is provided on the inner side wall of the cleaning tube 3-7, and a locking groove 3-11 is provided on the inner side wall of the longitudinal groove 3-10. A locking shaft 3-12 is provided on the side wall of the sealing plug 3-8, and the locking shaft 3-12 is embedded inside the longitudinal groove 3-10.

[0043] In some examples, the sealing shaft 6 is sealed to the sealing ring 3-9, further enhancing the sealing of the upper end of the cleaning tube 3-7 and preventing media leakage. The longitudinal groove 3-10 and the locking groove 3-11 provide space for the installation and movement of the locking shaft 3-12. The locking groove 3-11 is used to embed the locking shaft 3-12 after the sealing plug 3-8 is installed in place, thereby locking the sealing plug 3-8 and preventing it from accidentally falling off.

[0044] For example, such as Figure 4 As shown, the support foot 4-2 has an arc groove 4-4, the upper end of the arc groove 4-4 has a connecting groove 4-5, the upper end of the connecting groove 4-5 has a rectangular groove 4-6, the side wall of the extended support foot 4-3 has a plug-in block 4-7, the lower end of the plug-in block 4-7 has an arc block 4-8, the arc block 4-8 ​​matches the structure of the arc groove 4-4, and the plug-in block 4-7 matches the structure of the rectangular groove 4-6.

[0045] In some examples, the arc groove 4-4, the connecting groove 4-5, and the rectangular groove 4-6 are used to position and install the extended support foot 4-3. The arc groove 4-4 matches the arc block 4-8 ​​of the extended support foot 4-3. The connecting groove 4-5 connects the arc groove 4-4 and the rectangular groove 4-6. The rectangular groove 4-6 matches the plug-in block 4-7 to realize the plug-in connection between the extended support foot 4-3 and the support foot 4-2, ensuring the stability of the connection.

[0046] For example, such as Figure 3 As shown, a control panel 5 is provided on the lower end face of the cleaning tube 3-7, and a sealing shaft 6 is provided on the upper end face of the cleaning tube 3-7. The sealing shaft 6 and the sealing ring 3-9 are sealed and inserted together.

[0047] In some examples, the control panel 5 is located on the lower end face of the cleaning tube 3-7, making it convenient for operators to operate the sealing plug 3-8, such as opening, closing or rotating the sealing plug 3-8.

[0048] For example, such as Figure 1 As shown, the end of the heat exchange tube 2 extends out of the heat exchange tank 1, and a connecting flange 7 is provided on both the end of the heat exchange tube 2 and the circulation connecting pipe 3-3.

[0049] In some examples, the connecting flange 7 is located at the end of the heat exchange tube 2 and the circulation connecting pipe 3-3 for easy connection to other pipes or equipment, facilitating installation, disassembly and maintenance, while ensuring the sealing of the connection.

[0050] For example, such as Figure 2 As shown, a sampling tube 8 is provided on the upper end face of the heat exchange tank 1. The sampling tube 8 is connected to the heat exchange tube 2, and a sealing connection mounting plate 9 is provided on the upper end of the sampling tube 8.

[0051] In some examples, the sealing connection mounting plate 9 is located at the upper end of the sampling tube 8 to seal the sampling tube 8 and prevent media leakage. It can also serve as a connection interface during sampling to facilitate connection to sampling equipment.

[0052] For example, such as Figure 1 As shown, there are several supporting feet 4-2, and multiple supporting feet 4-2 are set at the four corners of the lower end face of the support platform 4-1. Each supporting foot 4-2 has an extended supporting foot 4-3 installed on its side wall.

[0053] In operation, high-temperature media (such as high-temperature water or steam) flow into heat exchange tube 2 through the connecting flange 7 at one end of heat exchange tube 2, while low-temperature media (such as cold water or air) flow outside heat exchange tube 2 inside heat exchange tank 1, creating a large temperature difference environment between the inside and outside of the tube. Heat is transferred from the high-temperature media to the low-temperature media through the wall of heat exchange tube 2, achieving heat exchange. For example, high-temperature water flows inside the tube, while cold water washes the tube wall outside. The cold water absorbs heat and heats up, while the high-temperature water cools down and flows out from the flange at the other end. The low-temperature media (which has been heated) flows into the circulation chamber 3-1 through the circulation connecting pipe 3-3. After being filtered for impurities by the filter screen 3-2, it re-enters the outside of heat exchange tube 2 to participate in heat exchange, forming a closed loop. The high-temperature media completes a single heat exchange inside the tube and then flows out of the system (or enters other loops). The design of the circulation chamber 3-1 ensures continuous flow of the low-temperature media, enhances heat exchange efficiency, and avoids local temperature imbalance.

[0054] In normal operation, the sealing plug 3-8 is fixed inside the cleaning tube 3-7 by cooperating with the longitudinal groove 3-10 and locking groove 3-11 of the cleaning tube 3-7 through the locking shaft 3-12. The sealing ring 3-9 and the sealing shaft 6 ensure that the cleaning tube 3-7 is isolated from the outside world to prevent media leakage. The filter screen 3-2 intercepts impurities in the media (such as rust and deposits) to avoid clogging the heat exchange tube 2 or affecting the heat exchange effect.

[0055] During regular cleaning, open the sealing plug 3-8: The operator rotates the sealing plug 3-8 through the control panel 5, causing the locking shaft 3-12 to slide from the locking groove 3-11 into the longitudinal groove 3-10, pulls the sealing plug 3-8 upward, releases the seal of the cleaning tube 3-7, and injects cleaning medium (such as water or steam) into the heat exchange tube 2 through the cleaning tube 3-7, or inserts a tool (such as a brush) through the cleaning port 3-5 to flush out the dirt and impurities in the heat exchange tube 2 from the cleaning hole 3-6 and discharge them out of the tank through the cleaning tube 3-7. Periodically remove the filter screen 3-2 in the circulation chamber 3-1 to clean the trapped impurities and restore the filtration function.

[0056] The support platform 4-1 serves as the base of the heat exchange tank 1, transferring the weight of the tank to the support legs 4-2 (usually four in total, distributed at the four corners). The support legs 4-2 are in direct contact with the ground, providing vertical support. The extended support legs 4-3 are inserted into the arc grooves 4-4 of the support legs 4-2 via the arc blocks 4-8 of the plug-in blocks 4-7. Then, by pushing laterally, the plug-in blocks 4-7 slide into the rectangular grooves 4-6, forming an L-shaped extended support. This increases the contact area with the ground and prevents the equipment from tilting or shaking. The extended support legs 4-3 are mechanically connected to the support legs 4-2, eliminating the need for welding or complex tools. This facilitates installation, disassembly, and adjustment. For example, when the ground is uneven, the position of a single extended support leg 4-3 can be adjusted to level the equipment.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A large temperature difference heat exchange system, characterized in that, include: A heat exchange tank (1) is provided with heat exchange tubes (2) inside the heat exchange tank (1); A heat exchange cleaning assembly (3) is disposed inside the heat exchange tank (1); A support plug-in assembly (4) is provided on the lower end face of the heat exchange tank (1); The heat exchange cleaning assembly (3) includes a circulation chamber (3-1) which is located inside the heat exchange tank (1). A filter screen (3-2) is installed inside the circulation chamber (3-1). A circulation connecting pipe (3-3) is installed on the upper end face of the heat exchange tank (1). A bent pipe (3-4) is connected to the heat exchange pipe (2). A cleaning port (3-5) is opened at the bottom of the bent pipe (3-4). A cleaning hole (3-6) is installed on the lower end face of the heat exchange tank (1). A cleaning pipe (3-7) is connected between the cleaning hole (3-6) and the cleaning port (3-5). A sealing plug (3-8) is installed inside the cleaning pipe (3-7).

2. The large temperature difference heat exchange system according to claim 1, characterized in that, The cleaning tube (3-7) is provided with a sealing ring (3-9) inside. The sealing plug (3-8) is sealed and inserted into the sealing ring (3-9). The inner sidewall of the cleaning tube (3-7) is provided with a longitudinal groove (3-10). The inner sidewall of the longitudinal groove (3-10) is provided with a locking groove (3-11). The sidewall of the sealing plug (3-8) is provided with a locking shaft (3-12). The locking shaft (3-12) is embedded in the interior of the longitudinal groove (3-10).

3. The large temperature difference heat exchange system according to claim 1, characterized in that, The support plug assembly (4) includes a support platform (4-1), which is disposed on the lower end face of the heat exchange tank (1). The cleaning port (3-5) passes through the support platform (4-1). The lower end face of the support platform (4-1) is provided with a support foot (4-2), and the side wall of the support foot (4-2) is provided with an extended support foot (4-3).

4. The large temperature difference heat exchange system according to claim 3, characterized in that, The supporting foot (4-2) has an arc groove (4-4), the upper end face of the arc groove (4-4) has a connecting groove (4-5), the upper end face of the connecting groove (4-5) has a rectangular groove (4-6), the side wall of the extended supporting foot (4-3) has a plug-in block (4-7), the lower end of the plug-in block (4-7) has an arc block (4-8), the arc block (4-8) matches the structure of the arc groove (4-4), and the plug-in block (4-7) matches the structure of the rectangular groove (4-6).

5. The large temperature difference heat exchanger system of claim 2, wherein The lower end face of the cleaning tube (3-7) is provided with a control panel (5), and the upper end face of the cleaning tube (3-7) is provided with a sealing shaft (6). The sealing shaft (6) is sealed and inserted into the sealing ring (3-9).

6. The large temperature difference heat exchange system according to claim 1, characterized in that, The end of the heat exchange tube (2) extends out of the heat exchange tank (1), and both the end of the heat exchange tube (2) and the circulation connecting pipe (3-3) are provided with connecting flanges (7).

7. The large temperature difference heat exchanger system of claim 1, wherein A sampling tube (8) is provided on the upper end face of the heat exchange tank (1), the sampling tube (8) is connected to the heat exchange tube (2), and a sealing connection mounting plate (9) is provided on the upper end of the sampling tube (8).

8. The large temperature difference heat exchanger system of claim 4, wherein The number of the supporting legs (4-2) is several, and multiple supporting legs (4-2) are arranged at the four corners of the lower end face of the support platform (4-1). Each supporting leg (4-2) has an extended supporting leg (4-3) installed on its side wall.

Images