A kind of seawater desalination efficiency body evaporator based on sectional heat exchange pipe

Abstract

The application relates to the technical field of seawater desalination, in particular to a seawater desalination evaporator based on a segmented heat exchange pipe, which comprises an evaporator shell, a heat exchange unit and a spraying unit, the heat exchange unit comprises multiple groups of heat exchange assemblies, the multiple groups of heat exchange assemblies are sequentially connected in head-tail mode, one group of heat exchange assemblies at the tail is communicated with a desalination water collecting tank, the heat exchange assembly comprises a first connecting flange, a second connecting flange and multiple heat exchange pipes, the heat exchange pipes are provided with self-adaptive plugging assemblies for automatically plugging the heat exchange pipes generating leakage, connecting pieces are arranged between two adjacent groups of heat exchange assemblies, the two ends of the multiple heat exchange pipes are respectively fixedly and detachably connected with the first connecting flange and the second connecting flange, and the first connecting flange is provided with a connecting piece between the second connecting flange of an adjacent group of heat exchange assemblies. The seawater desalination evaporator based on the segmented heat exchange pipe is designed as a modular structure, so that the maintenance efficiency of the evaporator is improved.

Description

Technical Field

[0001] This application relates to the field of seawater desalination technology, specifically to a seawater desalination evaporator based on segmented heat exchange tubes. Background Technology

[0002] A seawater desalination plant is a device that uses steam to evaporate seawater to obtain fresh water. Its main structure is the evaporator, which mainly contains a seawater spraying system, heat exchange tubes, and a freshwater collection system. The function of the seawater spraying system is to evenly spray seawater onto the heat exchange tube bundle. The seawater flows onto the heat exchange tubes of the bundle, forming a water film, which exchanges heat with the steam inside the tubes and evaporates. The steam inside the tubes condenses into water after heat exchange, collects in the water chamber, and is then transported to the freshwater pump through pipelines.

[0003] The heat exchange tubes of a seawater desalination unit are subject to the effects of seawater erosion, temperature changes, and localized corrosion. Over time, damage and leaks may occur in the heat exchange tubes. Since the external environment is seawater, once damaged, seawater will enter the tube through the leak point. The inside of the heat exchange tube is the channel for steam desalination water. The mixing of seawater with the desalination water will contaminate the desalination water, resulting in substandard water quality. Therefore, it is necessary to regularly locate the leak points of the heat exchange tubes and replace the leaking heat exchange tubes.

[0004] However, large-scale seawater desalination plants have multiple evaporators, each with tens of thousands of heat exchange tubes. It is difficult to quickly and accurately locate leaking heat exchange tubes. At the same time, the existing heat exchange tube bundles are long and difficult to disassemble and replace in the confined space inside the evaporator, which seriously affects the maintenance efficiency of the evaporator heat exchange tube bundles. Summary of the Invention

[0005] To improve the maintenance efficiency of the effective evaporator, this application provides a seawater desalination effective evaporator based on segmented heat exchange tubes.

[0006] The seawater desalination evaporator based on segmented heat exchange tubes provided in this application adopts the following technical solution:

[0007] A seawater desalination evaporator based on segmented heat exchange tubes, comprising:

[0008] An evaporator shell is provided with openings at both ends, and a mist eliminator and a desalinated water collection tank are provided at the end of the inner cavity of the evaporator shell along the length direction.

[0009] A heat exchange unit is fixedly disposed between the mist eliminator and the desalinated water collection tank; multiple sets of heat exchange units are arranged in an array along the axial direction of the inner cavity of the evaporator shell; a maintenance passage is provided between two adjacent sets of heat exchange units; each heat exchange unit includes multiple sets of heat exchange components, and the multiple sets of heat exchange components are connected end to end in sequence, with the set of heat exchange components located at the end communicating with the desalinated water collection tank, and the mist eliminator is disposed on the side of the desalinated water collection tank away from the heat exchange components;

[0010] The heat exchange assembly includes a first connecting flange, a second connecting flange, and multiple heat exchange tubes. An adaptive sealing component is installed inside each heat exchange tube to automatically seal any leaks in the heat exchange tubes. A connector is provided between adjacent heat exchange assemblies. Both ends of the multiple heat exchange tubes are fixedly and detachably connected to the first connecting flange and the second connecting flange, respectively. A connector is provided between the first connecting flange and the second connecting flange of an adjacent heat exchange assembly.

[0011] A spray unit is disposed in the inner cavity of the evaporator shell and is located above the heat exchange unit. The spray unit is used to spray seawater onto the heat exchange unit.

[0012] In one specific implementation, the heat exchange assembly includes a first connecting flange, heat exchange tubes, and a second connecting flange; both ends of the plurality of heat exchange tubes are fixedly and detachably connected to the first connecting flange and the second connecting flange, respectively; the connector is disposed between the first connecting flange and the second connecting flange of an adjacent set of heat exchange assemblies.

[0013] The first connecting flange includes a first flange body and a first connecting flange. The first connecting flange is coaxially arranged with the first flange body. One end of the first connecting flange is connected to the first flange body, and the other end is used to connect to an adjacent set of heat exchange components or a desalinated water collection tank. The first connecting flange is configured as a hollow structure, and a first communicating cavity is formed between the inner cavity of the first connecting flange and the end of the first flange body. A plurality of first communicating holes are uniformly opened on the end face of the first flange body. The first communicating holes penetrate the first flange body and communicate with the first communicating cavity. The heat exchange tube is inserted into the first communicating hole. The first communicating hole is arranged along the length direction to include a first limiting section and a second limiting section in sequence. The diameter of the first limiting section is larger than the diameter of the second limiting section.

[0014] Two limiting posts are symmetrically arranged on the inner wall of the first limiting section, and the two limiting posts are arranged close to the second limiting section; the limiting posts are used to fix the position of the heat exchange tube on the first flange body;

[0015] The length of the limiting post is greater than the radius difference between the first limiting segment and the second limiting segment.

[0016] In one specific implementation, the heat exchange tube includes an integrally coaxially arranged insertion section, sealing section, and connecting section, which are arranged sequentially along the length of the heat exchange tube; the diameter of the insertion section is the same as the diameter of the second limiting section, and the diameter of the sealing section is the same as the diameter of the first limiting section.

[0017] Two guide limiting grooves are symmetrically formed on the outer wall of the plug section. The limiting post is engaged in the guide limiting groove and can slide along the guide limiting groove.

[0018] The guide limiting groove includes a limiting part and a guiding part. The guiding part is spirally arranged, and one end of the guiding part is located at the opening of the heat exchange tube. The limiting part is L-shaped, and one end of the limiting part is connected to the end of the guiding part away from the opening of the heat exchange tube.

[0019] In one specific implementation scheme, two sets of the adaptive blocking components are symmetrically arranged at both ends of the connecting segment along its length. The adaptive blocking component includes a self-blocking ring tube and a blocking element. The self-blocking ring tube is coaxially arranged on the inner wall of the connecting segment and is fixedly connected to the inner wall of the connecting segment. The self-blocking ring tube extends along the axis and the inner wall of the self-blocking ring tube is set in a conical shape. The inner diameter of the self-blocking ring tube gradually decreases from one end near the middle of the connecting segment to one end near the end of the connecting segment.

[0020] The sealing element is located on the side with the larger diameter of the inner wall of the self-closing ring pipe. The sealing element includes a sealing ball and multiple flexible lines. One end of each of the multiple flexible lines is connected to the sealing ball, and the other end is connected to the inner wall of the connecting section. The sealing ball is suspended in the inner cavity of the connecting section through the flexible lines, and the sealing ball can abut against the inner wall of the self-closing ring pipe.

[0021] In one specific implementation scheme, the second connecting flange includes a second flange body and a second connecting flange. The second connecting flange is coaxially arranged with the second flange body. One end of the second connecting flange is connected to the second flange body, and the other end is connected to the first connecting flange of an adjacent group of heat exchange components. The second connecting flange is configured as a hollow structure, and a second communicating cavity is formed between the inner cavity of the second connecting flange and the end of the second flange body. A plurality of second communicating holes are uniformly opened on the end face of the second flange body. The second communicating holes penetrate the second flange body and communicate with the second communicating cavity. A quick-connect fitting is provided on the second communicating hole, and the end of the communicating section away from the sealing section is inserted into the quick-connect fitting.

[0022] When multiple sets of the heat exchange components are connected in sequence, the first connecting cavity and the second connecting cavity are connected.

[0023] In one specific implementation scheme, the first connecting flange and the second connecting flange are configured as square flanges, and the number of the first connecting holes and the second connecting holes are equal and their positions correspond.

[0024] In one specific implementation, the connector includes a U-shaped clamp, a locking element, and a locking handle; the U-shaped clamp includes a first connecting part, a second connecting part, and a third connecting part, the two ends of the second connecting part are respectively fixedly connected to the ends of the first connecting part and the third connecting part, the axes of the first connecting part and the third connecting part are perpendicular to the axis of the second connecting part, and the first connecting part and the third connecting part are symmetrically arranged about the second connecting part;

[0025] The first connecting part has a through hole, and the locking member is disposed in the through hole. The locking member includes a locking bolt and a locking nut. The locking bolt passes through the through hole, and the nut is screwed onto the locking bolt. When two adjacent first flange bodies and second flange bodies are connected to each other, the first connecting flange and the second connecting flange are engaged between the first connecting part and the third connecting part. The locking bolt abuts against the first connecting flange or the second connecting flange. The locking bolt is in close contact with the side wall of the first connecting part away from the third connecting part.

[0026] The third connecting part is provided with a mounting groove, which is located at the end of the third connecting part away from the second connecting part. The mounting groove is an open groove, and the locking handle is rotatably disposed in the mounting groove. The locking handle includes an integrally formed abutment and a handle. The abutment and the handle are perpendicular to each other. The abutment is rotatably connected to the two inner walls opposite to the mounting groove. The contour of the end of the abutment away from the handle is arc-shaped. When two adjacent first flange bodies and second flange bodies are connected to each other, the end of the abutment away from the handle is tightly abutted against the second connecting flange or the first connecting flange. The axis of the handle coincides with the axis of the third connecting part.

[0027] In one specific implementation, the connector includes a magnetic base, which is embedded in the first connecting flange or the second connecting flange, and a plurality of magnetic bases are evenly distributed along the end face of the first connecting flange or the second connecting flange. A magnet is disposed inside the magnetic base, and the two ends of the magnetic base are flush with the two ends of the first connecting flange or the second connecting flange. A rotary switch is disposed on the magnetic base, and the rotary switch is fixedly connected to the magnet.

[0028] In one specific implementation scheme, the first flange body and the second flange body are made of ferromagnetic material, and the magnetic base is made of soft iron material.

[0029] In one specific implementation scheme, a detection component is also included, which includes a control module and multiple flow meters; the multiple flow meters are respectively disposed between two adjacent first connecting flanges and second connecting flanges, and the control module is electrically connected to the multiple flow meters respectively, and the control module is used to display the readings of the flow meters in real time.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. This application sets the heat exchange tube as a modular structure, which is connected by multiple sets of heat exchange components, making it easy to disassemble and replace the heat exchange components; by observing the readings of the flow meters between multiple heat exchange components, when the readings of multiple flow meters are inconsistent, it can be determined that the heat exchange component has leaked, and the location of the leak can be determined based on the flow meter with abnormal reading, thus improving maintenance efficiency.

[0032] 2. The connector provided in this application, by engaging the first connecting flange and the second connecting flange in the U-shaped clamp, and using the locking bolt and locking handle to press the first connecting flange and the second connecting flange together, facilitates the quick disassembly and connection of two adjacent heat exchange components, thereby improving the maintenance efficiency of the heat exchange components.

[0033] 3. The connector provided in this application is embedded in the first connecting flange or the second connecting flange by means of a magnetic seat. By rotating the switch, the magnetic poles of the magnet inside the magnetic seat can be easily adjusted, so that the magnetic seat can be quickly magnetized and demagnetized, thereby attracting the adjacent first connecting flange or the second connecting flange, which facilitates the quick disassembly and connection of the two adjacent heat exchange components, thereby improving the maintenance efficiency of the heat exchange components.

[0034] 4. The adaptive plugging assembly provided in this application, by setting a self-plugging ring pipe and plugging components on the inner wall of the connecting section, allows external seawater to enter the heat exchange tube from the damaged opening when the heat exchange tube wall between the two sets of adaptive plugging assemblies is damaged. Under the action of pressure difference, the plugging balls in the two sets of adaptive plugging assemblies are forced to move towards the self-plugging ring pipe. At this time, the flexible line is stretched until the plugging ball seals the conical inner hole of the self-plugging ring pipe, thereby preventing external seawater vapor from entering the next section of the heat exchange tube from the damaged opening and flowing into the desalination water collection tank, thus avoiding pollution of the desalination water. At the same time, it also ensures that the whole device can operate without stopping when a small amount of heat exchange tube leakage occurs.

[0035] 5. The heat exchange tube of this application is connected to the first connecting flange by a rotary plug-in method and to the second connecting flange by a quick-connect fitting. When replacing a damaged heat exchange tube, simply disconnect the quick-connect fitting from the heat exchange tube, thereby disconnecting the second connecting flange from the heat exchange tube. Then, rotate and pull the damaged or blocked heat exchange tube, causing the guide limiting groove and the limiting post on the heat exchange tube to move relative to each other until the limiting post disengages from the guide limiting groove. This allows the damaged or blocked heat exchange tube to be disassembled. Then, a new heat exchange tube is rotated and inserted into the first connecting hole to replace the heat exchange tube. This avoids the complete scrapping of the heat exchange assembly and helps reduce the operating cost of the device. Attached Figure Description

[0036] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0037] Figure 1 This is a schematic diagram of the overall structure of a seawater desalination evaporator based on segmented heat exchange tubes according to an embodiment of this application.

[0038] Figure 2 This is a schematic diagram of the heat exchange component in Embodiment 1 of this application.

[0039] Figure 3 This is a schematic diagram of the structure of the first connecting flange in Embodiment 1 of this application.

[0040] Figure 4 This is a structural schematic diagram of the first connecting flange from another perspective in Embodiment 1 of this application.

[0041] Figure 5 This is a cross-sectional view of the first connecting flange in Embodiment 1 of this application.

[0042] Figure 6 yes Figure 5 The enlarged view of part A is intended to illustrate the first connecting hole.

[0043] Figure 7 This is a schematic diagram of the heat exchange tube in Embodiment 1 of this application.

[0044] Figure 8 yes Figure 7 The enlarged view of part B is intended to guide the limiting groove.

[0045] Figure 9 This is a schematic diagram of the structure of the second connecting flange in Embodiment 1 of this application.

[0046] Figure 10 This is a structural schematic diagram of the second connecting flange from another perspective in Embodiment 1 of this application.

[0047] Figure 11 This is a schematic diagram of the adaptive blocking component in Embodiment 1 of this application.

[0048] Figure 12 This is a schematic diagram of the installation structure of the connector in Embodiment 1 of this application.

[0049] Figure 13 This is a schematic diagram of the overall structure of the connector in Embodiment 1 of this application.

[0050] Figure 14 This is a schematic diagram of the installation structure of the connector on the first connecting flange in Embodiment 2 of this application.

[0051] Figure 15 This is a schematic diagram of the installation structure of the connector on the first connecting flange from another perspective in Embodiment 2 of this application.

[0052] Figure Descriptions: 1. Evaporator shell; 11. Mist eliminator; 12. Desalinated water collection tank; 13. Inspection port; 14. Cover plate; 15. Support; 16. Desalinated water discharge pipe; 17. Concentrated brine discharge pipe; 2. Heat exchange unit; 21. Heat exchange assembly; 211. First connecting flange; 2111. First flange body; 2112. First connecting flange; 2113. First communicating cavity; 2114. First communicating hole; 21141. First limiting section; 21142. Second limiting section; 21143. Limiting post; 212. Heat exchange tube; 2121. Insertion section; 2122. Sealing section; 2123. Communicating section; 2124. Guide limiting groove; 21241. Limiting part; 21242. Guide part; 213. Second connecting flange; 2131. Second 2132. Flange body; 2133. Second connecting flange; 2134. Second communicating cavity; 2135. Second communicating hole; 2136. Quick connector; 214. Adaptive sealing assembly; 2141. Self-sealing ring; 2142. Sealing component; 21421. Sealing ball; 21422. Flexible line; 3. Spray unit; 4. Lifting mechanism; 41. Slide rail; 42. Lifting robotic arm; 421. Column; 422. Fork; 5. Connector; 51. U-shaped clamp; 511. First connecting part; 512. Second connecting part; 513. Third connecting part; 514. Mounting groove; 52. Locking component; 521. Locking bolt; 522. Locking nut; 53. Locking handle; 531. Abutment part; 532. Handle; 54. Magnetic base; 541. Rotary switch. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0055] The following is in conjunction with the appendix Figure 1-15 This application will be described in further detail.

[0056] This application discloses a seawater desalination evaporator based on segmented heat exchange tubes.

[0057] Example 1

[0058] Reference Figure 1 A seawater desalination evaporator based on segmented heat exchange tubes includes: an evaporator shell 1, heat exchange units 2, a spray unit 3, and a support mechanism 4; the evaporator shell 1 has openings at both ends, and a mist eliminator 11 and a desalinated water collection tank 12 are provided at the ends of the inner cavity of the evaporator shell 1 along the length direction; multiple sets of heat exchange units 2 are arranged in an array along the axial direction of the inner cavity of the evaporator shell 1; a maintenance passage is provided between two adjacent sets of heat exchange units 2; the heat exchange unit 2 includes multiple sets of heat exchange components 21, and the multiple sets of heat exchange components 21 are connected end to end by connectors 5, and the set of heat exchange components 21 located at the tail end is connected to the desalinated water collection tank 12, and the mist eliminator 11 is located on the side of the desalinated water collection tank 12 away from the heat exchange components 21. The evaporator shell 1 is provided with a desalinated water discharge pipe 16 and a concentrated brine discharge pipe 17. One end of the desalinated water discharge pipe 16 is connected to the bottom of the desalinated water collection tank 12, and the other end is connected to an external collection device. The concentrated brine discharge pipe 17 is located at the bottom of the evaporator shell 1 and is connected to the inner cavity of the evaporator shell 1.

[0059] The spray unit 3 is located inside the evaporator shell 1 and above the heat exchange unit 2. The spray unit 3 is used to spray seawater onto the heat exchange unit 2. During seawater desalination, high-pressure steam enters the heat exchange unit 2. When the seawater is sprayed onto the surface of the heat exchange unit 2, heat is transferred from the high-pressure steam in the heat exchange unit 2 to the seawater. The seawater evaporates to form steam and enters the next evaporator through the mist eliminator 11. The high-pressure steam in the heat exchange unit 2 condenses into desalinated water and enters the desalinated water collection tank 12. It is then discharged to the desalinated water collection device through the desalinated water discharge pipe 16. The unevaporated seawater accumulates at the bottom of the evaporator shell 1 and is discharged through the concentrated brine discharge pipe 17.

[0060] The lifting mechanism 4 includes a slide rail 41 and a lifting robotic arm 42. The slide rail 41 is located at the bottom of the inner cavity of the evaporator housing 1 and is arranged along the axial direction of the evaporator housing 1. The lifting robotic arm 42 includes a column 421 and a fork 422. The column 421 is vertically arranged and slidably connected to the slide rail 41. The fork 422 is rotatably arranged on the column 421 and can slide along the height direction of the column 421. The fork 422 is used to support the heat exchange assembly 21. An inspection port 13 is provided on the top of the evaporator shell 1, and the inspection port 13 is located directly above the maintenance channel. The slide rail 41 is set at the bottom of the maintenance channel. A cover plate 14 is provided on the inspection port 13. When the heat exchange component 21 is inspected or replaced, the damaged heat exchange component 21 can be lifted by the lifting robotic arm 42 and moved through the maintenance channel to the area below the inspection port 13. At the same time, the cover plate 14 is opened, and the damaged heat exchange component 21 is taken out from the inspection port 13 by the hoisting mechanism. The new heat exchange component 21 is then moved into the evaporator shell 1 for installation.

[0061] Reference Figure 2 The heat exchange assembly 21 includes a first connecting flange 211, a heat exchange tube 212, and a second connecting flange 213; the two ends of multiple heat exchange tubes 212 are fixedly and detachably connected to the first connecting flange 211 and the second connecting flange 213 respectively; two sets of adaptive sealing assemblies are provided inside the heat exchange tubes, and the first connecting flange 211 is connected to the second connecting flange 213 of the adjacent set of heat exchange assemblies 21.

[0062] Reference Figures 3-6The first connecting flange 211 includes a first flange body 2111 and a first connecting flange. The first connecting flange is coaxially arranged with the first flange body 2111. One end of the first connecting flange is connected to the first flange body 2111, and the other end is used to connect to an adjacent set of heat exchange components 21 or a desalinated water collection tank 12. The first connecting flange is a hollow structure, and a first communicating cavity 2113 is formed between the inner cavity of the first connecting flange and the end of the first flange body 2111. A plurality of first communicating holes 2114 are evenly opened on the end face of the first flange body 2111. The first communicating holes 2114 penetrate the first flange body 2111, and the first communicating holes 2114 and the first communicating cavity 2113 are connected. The heat exchange tube 212 is inserted into the first connecting hole 2114. The first connecting hole 2114 is arranged along its length to include a first limiting section 21141 and a second limiting section 21142. The diameter of the first limiting section 21141 is larger than the diameter of the second limiting section 21142. Two limiting posts 21143 are symmetrically arranged on the inner wall of the first limiting section 21141, and the two limiting posts 21143 are arranged close to the second limiting section 21142. The limiting posts 21143 are used to fix the position of the heat exchange tube 212 on the first flange body 2111. The length of the limiting posts 21143 is greater than the difference in radius between the first limiting section 21141 and the second limiting section 21142.

[0063] Reference Figures 6-8 The heat exchange tube 212 includes an integrally coaxially arranged insertion section 2121, sealing section 2122, and connecting section 2123, which are arranged sequentially along the length of the heat exchange tube 212. The diameter of the insertion section 2121 is the same as the diameter of the second limiting section 21142, and the diameter of the sealing section 2122 is the same as the diameter of the first limiting section 21141. Two guide limiting grooves 2124 are symmetrically formed on the outer wall of the insertion section 2121 for limiting... The column 21143 is engaged within the guide limiting groove 2124, and the limiting column 21143 can slide along the guide limiting groove 2124; the guide limiting groove 2124 includes a limiting part 21241 and a guiding part 21242, the guiding part 21242 is spirally arranged, and one end of the guiding part 21242 is located at the opening of the heat exchange tube 212; the limiting part 21241 is "L" shaped, and one end of the limiting part 21241 is connected to the end of the guiding part 21242 away from the opening of the heat exchange tube 212.

[0064] Reference Figure 2 , Figure 9 and Figure 10The second connecting flange 213 includes a second flange body 2131 and a second connecting flange 2132. The second connecting flange 2132 is coaxially arranged with the second flange body 2131. One end of the second connecting flange 2132 is connected to the second flange body 2131, and the other end is connected to the first connecting flange of an adjacent set of heat exchange components 21. The second connecting flange 2132 is a hollow structure, and a second communicating cavity 2133 is formed between the inner cavity of the second connecting flange 2132 and the end of the second flange body 2131. A plurality of second communicating holes 2134 are evenly opened on the end face of the second flange body 2131. The second communicating holes 2134 penetrate the second flange body 2131 and the second communicating holes 2134 are not connected to the second flange body 2131. The hole 2134 communicates with the second connecting cavity 2133; a quick-connect connector 2135 is provided on the second connecting hole 2134, and the end of the connecting section 2123 away from the sealing section 2122 is inserted into the quick-connect connector 2135; in this embodiment, the quick-connect connector 2135 is set as a self-locking quick connector. By providing an annular groove on the side wall of the end of the connecting section 2123 away from the sealing section 2122, when inserting, the connecting section 2123 is aligned and inserted into the quick connector, so that the steel ball in the quick connector is engaged in the sealing groove of the connecting section 2123, preventing the heat exchange tube 212 from axially moving and thus disengaging from the second connecting flange 213. The heat exchange tube 212 can rotate freely in the quick-connect connector 2135.

[0065] Reference Figure 11 Two sets of adaptive plugging components 214 are symmetrically arranged at both ends of the connecting segment 2123 along its length. Each adaptive plugging component 214 includes a self-plugging ring tube 2141 and a plugging element 2142. The self-plugging ring tube 2141 is coaxially arranged on the inner wall of the connecting segment 2123 and is fixedly connected to the inner wall of the connecting segment 2123. The self-plugging ring tube 2141 extends along the axis, and its inner wall is conical. The diameter of the inner wall of the self-plugging ring tube 2141 increases from one end near the middle of the connecting segment 2123 to the other end near the middle. Near the end of the connecting section 2123, the diameter gradually decreases. The sealing element 2142 is located on the side of the inner wall of the self-closing ring pipe 2141 with a larger diameter. The sealing element 2142 includes a sealing ball 21421 and multiple flexible wires 21422. One end of each flexible wire 21422 is connected to the sealing ball 21421, and the other end is connected to the inner wall of the connecting section 2123. The sealing ball 21421 is suspended in the inner cavity of the connecting section 2123 by the flexible wires 21422, and the sealing ball 21421 can abut against the inner wall of the self-closing ring pipe 2141. In particular, the flexible wires 21422 are made of modified rubber materials, such as high-temperature vulcanized silicone rubber, fluororubber, SEBS elastomer, etc., to ensure that the flexible wires 21422 have excellent elasticity and high temperature resistance and aging resistance in the high temperature and high humidity environment inside the heat exchange tube 212.

[0066] Specifically, when the wall of the heat exchange tube 212 between the two sets of adaptive sealing components 214 is damaged, external seawater enters the heat exchange tube 212 through the damaged opening. Under the action of pressure difference, the sealing ball 21421 in the two sets of adaptive sealing components 214 is forced to move towards the self-closing ring tube 2141. At this time, the flexible line 21422 is stretched until the sealing ball 21421 seals the conical inner hole of the self-closing ring tube 2141, thereby preventing external seawater vapor from entering the next section of the heat exchange tube 212 through the damaged opening and flowing into the desalination water collection tank 12, thus avoiding pollution of the desalination water. At the same time, it also ensures that the whole device can operate without stopping when a small number of heat exchange tubes leak.

[0067] When multiple heat exchange components 21 are connected sequentially, the first connecting cavity 2113 and the second connecting cavity 2133 are connected. The first connecting flange 211 and the second connecting flange 213 are set as square flanges, and the number of the first connecting holes 2114 and the second connecting holes 2134 are equal and their positions correspond.

[0068] Specifically, it also includes a detection component, which includes multiple sets of online conductivity meters, a control module, and multiple sets of flow meters. The multiple sets of flow meters and multiple sets of online conductivity meters are respectively set between two adjacent first connecting flanges 211 and second connecting flanges 213. The control module is connected to the multiple sets of online conductivity meters and multiple sets of flow meters, and the control module is used to display the online conductivity and flow meter readings in real time. During seawater desalination, the flow rate of desalinated water in the heat exchange components is monitored in real time based on the flow meter readings displayed by the control module. If a significant difference in flow rate is detected between the flow meter reading at a certain location and the flow rate of the preceding flow meter, specifically a sudden drop in flow rate, it can be determined that a large number of heat exchange tubes 212 on the heat exchange component 21 at that location are blocked or damaged. This prevents the desalinated water in the preceding heat exchange component 21 from flowing normally backward. Based on the flow meter readings, the leaking heat exchange component 21 can be accurately located, and the heat exchange tubes 212 can be replaced. Simultaneously, an online conductivity monitor continuously monitors the flow rate between adjacent heat exchange components. The conductivity of the flowing desalinated water is displayed on the control module. When the conductivity reading exceeds the threshold, it indicates a leak in the heat exchange tube. Seawater may be entering the heat exchange tube, but the inflow may be insufficient, and the pressure difference within the heat exchange tube 212 may not be enough for the sealing ball 21421 to seal the self-closing ring 2141. Alternatively, the rupture may be located at the end of the heat exchange tube 212, causing the adaptive sealing component 214 to fail. This results in the conductivity of the water flowing within both heat exchange components 21 exceeding the standard. In this case, the control module can stop the evaporator and locate, repair, and replace the damaged heat exchange tube 212 at the heat exchange component 21 with the excessive conductivity. Simultaneously, the control module has an alarm function. When the flow rate or conductivity exceeds the threshold, it generates an audible and visual alarm signal and displays the location of the abnormal heat exchange component, allowing operators to perceive the evaporator malfunction and take timely action.

[0069] Reference Figure 12 and Figure 13 The connector 5 includes a U-shaped clamp 51, a locking member 52, and a locking handle 53. The U-shaped clamp 51 includes a first connecting part 511, a second connecting part 512, and a third connecting part 513. The two ends of the second connecting part 512 are fixedly connected to the ends of the first connecting part 511 and the third connecting part 513, respectively. The axes of the first connecting part 511 and the third connecting part 513 are perpendicular to the axis of the second connecting part 512, and the first connecting part 511 and the third connecting part 513 are perpendicular to the axis of the second connecting part 512. The connecting parts 512 are symmetrically arranged; a through hole is provided on the first connecting part 511, and a locking member 52 is disposed in the through hole. The locking member 52 includes a locking bolt 521 and a locking nut 522. The locking bolt 521 passes through the through hole, and the nut is screwed onto the locking bolt 521 and the locking nut 522. When two adjacent first flange bodies and second flange bodies are connected to each other, the first connecting flange and the second connecting flange are engaged between the first connecting part 511 and the third connecting part 513, and the locking bolt... 521 is pressed against the first connecting flange or the second connecting flange, and the locking bolt 521 is tightly abutted against the side wall of the first connecting part 511 away from the third connecting part 513; the third connecting part 513 is provided with a mounting groove 514, which is located at the end of the third connecting part 513 away from the second connecting part 512. The mounting groove 514 is an open groove, and the locking handle 53 is rotatably disposed in the mounting groove 514. The locking handle 53 includes an integrally formed abutment part 531 and a handle 532. The clamping part 531 is perpendicular to the handle 532. The clamping part 531 is rotatably connected to the two inner walls opposite to the mounting groove 514. The end of the clamping part 531 away from the handle 532 has an arc-shaped profile. When two adjacent first flange bodies 2111 and second flange bodies 2131 are connected to each other, the end of the clamping part 531 away from the handle 532 is in close contact with the second connecting flange 2132 or the first connecting flange 2112. The axis of the handle 532 coincides with the axis of the third connecting part 513. To ensure the sealing between two adjacent first flange bodies 2111 and second flange bodies 2131, an elastic gasket can be provided between the first flange body 2111 and the second flange body 2131 to ensure the normal flow of desalinated water in the two adjacent heat exchange components 21.

[0070] Specifically, refer to Figure 1 It also includes a bracket 15, which is fixedly installed in the inner cavity of the evaporator housing 1, and the first connecting flange 211 and the second connecting flange 213 are fixedly mounted on the bracket 15.

[0071] Example 2

[0072] Reference Figure 14 and Figure 15The difference between Embodiment 2 and Embodiment 1 is that the connector 5 can also be configured as a magnetic seat 54. In Embodiment 2, the magnetic seat 54 is embedded in the first connecting flange, and multiple magnetic seats 54 are evenly distributed along the end face of the first connecting flange. A magnet is provided inside the magnetic seat 54, and both ends of the magnetic seat 54 are flush with both ends of the first connecting flange. A rotary switch 541 is provided on the magnetic seat 54, and the rotary switch 541 is fixedly connected to the magnet. The first flange body and the second flange body are made of ferromagnetic material, and the magnetic seat 54 is made of soft iron material.

[0073] Specifically, by rotating switch 541, the magnetic poles of the magnet inside the magnetic base 54 are adjusted, allowing the magnetic base 54 to be quickly magnetized and demagnetized. This, in turn, attracts the adjacent second connecting flange 2132, facilitating the quick disassembly and connection of adjacent heat exchange components 21, thereby improving the maintenance efficiency of the heat exchange components 21. In this embodiment, the magnetic base 54 can also be embedded in the second connecting flange 2132, and the magnetic connecting base attracts the first connecting flange 2112 to achieve the connection of adjacent heat exchange components 21.

[0074] The working principle of the seawater desalination evaporator based on segmented heat exchange tubes in this application is as follows: The online conductivity monitor monitors the conductivity of the desalinated water flowing between two adjacent heat exchange components 21 in real time. When a leak occurs in the heat exchange tube 212 inside the evaporator, if the rupture is small, seawater enters the heat exchange tube, but the seawater inflow is small, and the pressure difference inside the heat exchange tube 212 is insufficient for the sealing ball 21421 to seal the self-closing ring tube 2141. Or, if the rupture is located at the end of the heat exchange tube 212, the adaptive sealing component 214 fails. Through the conductivity reading displayed by the control module, after the seawater enters the heat exchange tube, the conductivity reading exceeds the threshold, which can be used to determine that the heat exchange tube has leaked. At this time, the control module can control the evaporator to stop running, locate the damaged heat exchange tube 212 at the heat exchange component 21 with excessive conductivity, repair and plug the leak in the damaged heat exchange tube 212, and replace the heat exchange tube 212 with serious leakage.

[0075] When the rupture is located at the end of the heat exchange tube, the adaptive sealing component 214 fails, allowing seawater to enter the heat exchange tube. The conductivity of the water flow in the two heat exchange components 21 exceeds the standard. At this time, the control module can control the evaporator to stop operating and locate, repair and replace the damaged heat exchange tube 212 at the heat exchange component 21 with excessive conductivity.

[0076] When the rupture is large, external seawater enters the heat exchange tube 212 through the rupture. Under the action of pressure difference, the sealing balls 21421 in the two sets of adaptive sealing components 214 are forced to move towards the self-closing ring tube 2141. At this time, the flexible line 21422 is stretched until the sealing balls 21421 seal the conical inner hole of the self-closing ring tube 2141, thereby preventing external seawater vapor from entering the next section of the heat exchange tube 212 through the rupture and flowing into the desalination water collection tank 12, thus avoiding pollution of the desalination water. At the same time, it also ensures that the whole device can operate without stopping when a small number of heat exchange tubes 212 leak.

[0077] When there are many damaged heat exchange tubes 212, the seawater desalination efficiency of the evaporator decreases. At this time, the number of blocked heat exchange tubes 212 increases, causing the flow meter reading at the heat exchange component 21 where the damaged heat exchange tube 212 is located to drop sharply. Based on the flow meter position where the reading changes, the specific location of the leaking heat exchange component 21 is determined. Then, the evaporator is stopped from running, and the operator enters the inner cavity of the evaporator shell 1 through the inspection port 13 to replace the heat exchange component 21 at the leak point.

[0078] When replacing the heat exchange component, first adjust the lifting robotic arm 42. The lifting robotic arm 42 slides along the slide rail 41 to a position close to the heat exchange component 21 to be replaced. Adjust the height and direction of the fork 422 on the column 421 so that the fork 422 is positioned below the heat exchange component 21 to support it. Then, the operator adjusts the connector 5 at the connection of the heat exchange component 21 to be replaced, so that the heat exchange component 21 to be replaced is detached from the heat exchange unit 2. Adjust the lifting robotic arm 42, and the lifting robotic arm 42 transfers the heat exchange component 21 to be replaced through the maintenance channel to a position below the maintenance port 13. The operator uses a hoisting device to lift the heat exchange component 21 to be replaced out of the maintenance port 13. Then, the new heat exchange component 21 is hoisted through the maintenance port 13 into the inner cavity of the evaporator shell 1 and moved to the installation position by the lifting robotic arm 42. The operator then installs it.

[0079] After the heat exchange component 21 to be replaced is hoisted, a sealing and drainage test is conducted to identify the damaged heat exchange tube 212 that is leaking. Then, the operator first disconnects the quick-connect fitting 2135 from the heat exchange tube 212, causing the second connecting flange 213 to disconnect from the heat exchange tube 212. Then, the damaged heat exchange tube 212 is rotated and pulled, causing the guide limiting groove 2124 and the limiting post 21143 on the damaged heat exchange tube 212 to move relative to each other until the limiting post 21143 disengages from the guide limiting groove 2124. Next, the new heat exchange tube 212 is taken out, with the insertion section 2121 of the new heat exchange tube 212 facing the first limiting hole. The opening of the guide portion 21242 of the guide limiting groove 2124 is aligned with the limiting post 21143. The insertion section 2121 is inserted into the first limiting section 21141, so that the limiting post 21143 is engaged in the guide portion 21242. The heat exchange tube 212 is slowly rotated, so that the limiting post 21143 moves relative to the guide portion 21242 into the limiting portion 21241 until it reaches the end of the limiting portion 21241. At this time, the sealing section 2122 is inserted into the second limiting section 21142, and the sealing section 2122 seals the second limiting section 21142 to prevent leakage between the heat exchange tube 212 and the first connecting hole 2114. Simultaneously, the limiting part 21241 limits the limiting post 21143 to prevent the heat exchange tube 212 from axially moving and thus disengaging from the first connecting flange 211. After the heat exchange tube 212 is replaced, the quick-connect fitting 2135 of the second connecting flange 213 is aligned with the connecting section 2123 of the heat exchange tube 212, and the connecting section 2123 is inserted into the quick-connect fitting 2135 to complete the replacement of the damaged heat exchange tube 212. The reassembled heat exchange assembly 21 is ready for subsequent replacement.

[0080] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A seawater desalination evaporator based on segmented heat exchange tubes, characterized in that, include: An evaporator housing (1) is provided with openings at both ends, and a mist eliminator (11) and a desalinated water collection tank (12) are provided at the end of the inner cavity of the evaporator housing (1) along the length direction; an inspection port (13) is provided at the top of the evaporator housing (1), and a cover plate (14) is provided on the inspection port (13), and the inspection port (13) is located directly above the maintenance passage; A heat exchange unit (2) is fixedly disposed between the mist eliminator (11) and the desalinated water collection tank (12); multiple sets of the heat exchange units (2) are arranged in an array along the axial direction of the inner cavity of the evaporator shell (1); a maintenance channel is provided between two adjacent sets of the heat exchange units (2); the heat exchange unit (2) includes multiple sets of heat exchange components (21), and the multiple sets of heat exchange components (21) are connected end to end in sequence, and the set of heat exchange components (21) located at the end is connected to the desalinated water collection tank (12), and the mist eliminator (11) is disposed on the side of the desalinated water collection tank (12) away from the heat exchange components (21); The heat exchange assembly (21) includes a first connecting flange (211), a second connecting flange (213), and multiple heat exchange tubes (212). Each heat exchange tube (212) is equipped with an adaptive sealing assembly (214) for automatically sealing any leaks in the heat exchange tube (212). Both ends of the multiple heat exchange tubes (212) are fixedly and detachably connected to the first connecting flange (211) and the second connecting flange (213), respectively. A connector (5) is provided between the first connecting flange (211) and the second connecting flange (213) of an adjacent set of heat exchange assemblies (21). Both ends of the multiple heat exchange tubes (212) are respectively connected to the first connecting flange (211) and the second connecting flange (213) of the adjacent set of heat exchange assemblies (212). The first connecting flange (211) and the second connecting flange (213) are fixedly and detachably connected; the connecting piece (5) is disposed between the first connecting flange (211) and the second connecting flange (213) of the adjacent set of heat exchange components (21); the first connecting flange (211) includes a first flange body (2111) and a first connecting flange (2112), the first connecting flange (2112) is coaxially disposed with the first flange body (2111), one end of the first connecting flange (2112) is connected to the first flange body (2111), and the other end is used to connect to the adjacent set of heat exchange components (21) or desalination water collection tank (12). The first connecting flange (2112) is configured as a hollow structure, and a first communicating cavity (2113) is formed between the inner cavity of the first connecting flange (2112) and the end of the first flange body (2111); a plurality of first communicating holes (2114) are uniformly opened on the end face of the first flange body (2111), the first communicating holes (2114) penetrate the first flange body (2111), and the first communicating holes (2114) communicate with the first communicating cavity (2113); the heat exchange tube (212) is inserted into the first communicating hole (2114); the first communicating hole (2114) is provided with a first limiting section in sequence along the length direction (…). The first limiting segment (21141) and the second limiting segment (21142) are provided. The diameter of the first limiting segment (21141) is larger than the diameter of the second limiting segment (21142). Two limiting posts (21143) are symmetrically arranged on the inner wall of the first limiting segment (21141), and the two limiting posts (21143) are arranged close to the second limiting segment (21142). The limiting posts (21143) are used to fix the position of the heat exchange tube (212) on the first flange body (2111). The length of the limiting post (21143) is greater than the difference in radius between the first limiting segment (21141) and the second limiting segment (21142).The heat exchange tube (212) includes an integrally coaxially arranged insertion section (2121), sealing section (2122), and connecting section (2123), which are arranged sequentially along the length of the heat exchange tube (212). The diameter of the insertion section (2121) is the same as that of the second limiting section (21142), and the diameter of the sealing section (2122) is the same as that of the first limiting section (21141). Two guide limiting grooves (2124) are symmetrically formed on the outer wall of the insertion section (2121), and the limiting post (211) is... 43) The locking post (21143) is engaged within the guide limiting groove (2124), and the limiting post (21143) can slide along the guide limiting groove (2124); the guide limiting groove (2124) includes a limiting part (21241) and a guiding part (21242), the guiding part (21242) is spirally arranged, and one end of the guiding part (21242) is located at the opening of the heat exchange tube (212); the limiting part (21241) is "L" shaped, and one end of the limiting part (21241) is connected to the end of the guiding part (21242) away from the opening of the heat exchange tube (212); the second connection The flange (213) includes a second flange body (2131) and a second connecting flange (2132). The second connecting flange (2132) is coaxially arranged with the second flange body (2131). One end of the second connecting flange (2132) is connected to the second flange body (2131), and the other end is connected to the first connecting flange (2112) of an adjacent set of heat exchange components (21). The second connecting flange (2132) is configured as a hollow structure, and a second communicating cavity (2133) is formed between the inner cavity of the second connecting flange (2132) and the end of the second flange body (2131). The end face of the two flange bodies (2131) is evenly provided with a plurality of second connecting holes (2134), the second connecting holes (2134) penetrate the second flange body (2131) and are connected to the second connecting cavity (2133); a quick connector (2135) is provided on the second connecting hole (2134), and the end of the connecting section (2123) away from the sealing section (2122) is inserted into the quick connector (2135); when multiple sets of the heat exchange components (21) are connected in sequence, the first connecting cavity (2113) is connected to the second connecting cavity (2133); A spray unit (3) is disposed in the inner cavity of the evaporator shell (1) and the spray unit (3) is located above the heat exchange unit (2). The spray unit (3) is used to spray seawater onto the heat exchange unit (2). The lifting mechanism (4) includes a slide rail (41) and a lifting robotic arm (42). The slide rail (41) is located at the bottom of the inner cavity of the evaporator housing (1) and at the bottom of the maintenance passage. The slide rail (41) is arranged along the axial direction of the evaporator housing (1). The lifting robotic arm (42) includes a column (421) and a fork (422). The column (421) is vertically arranged and slidably connected to the slide rail (41). The fork (422) is rotatably arranged on the column (421) and can slide along the height direction of the column (421). The fork (422) is used to support the heat exchange assembly (21). Replacing the heat exchange assembly (21) includes the following steps: Adjust the lifting robotic arm (42), which slides along the slide rail (41) to a position close to the heat exchange component (21) to be replaced. Adjust the height and direction of the fork (422) on the column (421) so that the fork (422) is positioned below the heat exchange component (21) to be replaced and supports it. Adjust the connector (5) at the connection of the heat exchange component (21) to be replaced so that the heat exchange component (21) to be replaced is detached from the heat exchange unit (2). Adjust the lifting robotic arm (42), which transfers the heat exchange component (21) to be replaced through the maintenance channel to a position below the maintenance port (13). Open the cover plate (14) and use the hoisting equipment to lift the heat exchange component (21) to be replaced out of the inspection port (13); hoist the new heat exchange component (21) through the inspection port (13) into the inner cavity of the evaporator shell (1), and move it to the installation position for installation by the lifting mechanical arm (42); after the heat exchange component (21) to be replaced is hoisted, determine the damaged heat exchange tube (212) that is leaking by conducting a sealing and drainage test; detach the quick connector (2135) from the heat exchange tube (212), so that the second connecting flange (213) is detached from the heat exchange tube (212); rotate and pull out the damaged heat exchange tube (212) to make The guide limiting groove (2124) on the damaged heat exchange tube (212) moves relative to the limiting post (21143) until the limiting post (21143) disengages from the guide limiting groove (2124). A new heat exchange tube (212) is then taken out, with its insertion section (2121) facing the first limiting hole. The opening of the guide portion (21242) of the guide limiting groove (2124) is aligned with the limiting post (21143). The insertion section (2121) is inserted into the first limiting section (21141), causing the limiting post (21143) to engage with the guide portion (21242). The tube is then slowly rotated. The heat exchange tube (212) allows the limiting post (21143) to move relative to the guide portion (21242) into the limiting portion (21241) until it reaches the end of the limiting portion (21241). At this time, the sealing section (2122) is inserted into the second limiting section (21142), and the sealing section (2122) seals the second limiting section (21142) to prevent leakage between the heat exchange tube (212) and the first connecting hole (2114). At the same time, the limiting portion (21241) limits the limiting post (21143) to prevent the heat exchange tube (212) from axially moving and thus disengaging from the first connecting flange (211).After the heat exchange tube (212) is replaced, align the quick-connect fitting (2135) of the second connecting flange (213) with the connecting section (2123) of the heat exchange tube (212), and insert the connecting section (2123) into the quick-connect fitting (2135) to complete the replacement of the damaged heat exchange tube (212); the reassembled heat exchange assembly (21) is ready for subsequent replacement.

2. The evaporator according to claim 1, characterized in that, Two sets of adaptive blocking components (214) are symmetrically arranged at both ends of the connecting segment (2123) along the length direction. The adaptive blocking component (214) includes a self-blocking ring tube (2141) and a blocking element (2142). The self-blocking ring tube (2141) is coaxially arranged on the inner wall of the connecting segment (2123) and is fixedly connected to the inner wall of the connecting segment (2123). The self-blocking ring tube (2141) runs through the axis and the inner wall of the self-blocking ring tube (2141) is set as conical. The inner diameter of the self-blocking ring tube (2141) gradually decreases from one end near the middle of the connecting segment (2123) to one end near the end of the connecting segment (2123). The sealing element (2142) is located on the side with the larger diameter of the inner wall of the self-closing ring tube (2141). The sealing element (2142) includes a sealing ball (21421) and multiple flexible lines (21422). One end of each of the multiple flexible lines (21422) is connected to the sealing ball (21421), and the other end is connected to the inner wall of the connecting section (2123). The sealing ball (21421) is suspended in the inner cavity of the connecting section (2123) through the flexible lines (21422). The sealing ball (21421) can abut against the inner wall of the self-closing ring tube (2141).

3. The evaporator according to claim 1, characterized in that, The first connecting flange (211) and the second connecting flange (213) are set as square flanges, and the number of the first connecting hole (2114) and the second connecting hole (2134) are equal and their positions correspond.

4. The evaporator according to claim 1, characterized in that, The connector (5) includes a U-shaped clamp (51), a locking member (52), and a locking handle (53); the U-shaped clamp (51) includes a first connecting part (511), a second connecting part (512), and a third connecting part (513). The two ends of the second connecting part (512) are fixedly connected to the ends of the first connecting part (511) and the third connecting part (513), respectively. The axes of the first connecting part (511) and the third connecting part (513) are perpendicular to the axis of the second connecting part (512), and the first connecting part (511) and the third connecting part (513) are symmetrically arranged about the second connecting part (512). The first connecting part (511) has a through hole, and the locking member (52) is disposed in the through hole. The locking member (52) includes a locking bolt (521) and a locking nut (522). The locking bolt (521) passes through the through hole, and the nut is screwed onto the locking bolt (521). When two adjacent first flange bodies (2111) and second flange bodies (2131) are connected to each other, the first connecting flange (2112) and the second connecting flange (2132) are engaged between the first connecting part (511) and the third connecting part (513). The locking bolt (521) abuts against the first connecting flange (2112) or the second connecting flange (2132). The locking bolt (521) is in close contact with the side wall of the first connecting part (511) away from the third connecting part (513). The third connecting part (513) is provided with a mounting groove (514), which is located at the end of the third connecting part (513) away from the second connecting part (512). The mounting groove (514) is an open groove. The locking handle (53) is rotatably disposed in the mounting groove (514). The locking handle (53) includes an integrally formed abutment (531) and a handle (532). The abutment (531) and the handle (532) are perpendicular to each other. The two inner walls of the mounting groove (514) are rotatably connected. The end of the abutment (531) away from the handle (532) has an arc-shaped profile. When two adjacent first flange bodies (2111) and second flange bodies (2131) are connected to each other, the end of the abutment (531) away from the handle (532) is in close contact with the second connecting flange (2132) or the first connecting flange (2112). The axis of the handle (532) coincides with the axis of the third connecting part (513).

5. The evaporator according to claim 1, characterized in that, The connector (5) includes a magnetic base (54), which is embedded in the first connecting flange (2112) or the second connecting flange (2132). A plurality of magnetic bases (54) are evenly distributed along the end face of the first connecting flange (2112) or the second connecting flange (2132). A magnet is provided inside the magnetic base (54). The two ends of the magnetic base (54) are flush with the two ends of the first connecting flange (2112) or the second connecting flange (2132). A rotary switch (541) is provided on the magnetic base (54), and the rotary switch (541) is fixedly connected to the magnet.

6. The evaporator according to claim 5, characterized in that, The first flange body (2111) and the second flange body (2131) are made of ferromagnetic material, and the magnetic seat (54) is made of soft iron material.

7. The evaporator according to claim 1, characterized in that, It also includes a detection component, which includes a control module and multiple flow meters; the multiple flow meters are respectively disposed between two adjacent first connecting flanges (211) and second connecting flanges (213), and the control module is connected to the multiple flow meters respectively, and the control module is used to display the readings of the flow meters in real time.

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