Evaporation device with bundling pipe as component unit

Abstract

The invention discloses an evaporation device with bundling pipes as component units, relates to the technical field of evaporation devices, and aims to solve the problems that an existing evaporator exchanges heat through a plurality of vertical pipes, the superficial area of the vertical pipes is limited, the heat exchange effect is limited, and when the heat exchange requirement is increased due to failure of front-end equipment, the suddenly-increased heat exchange requirement cannot be met. Meanwhile, the vertical pipe is of a fixed connection structure, when the vertical pipe is damaged, the vertical pipe can be blocked, the whole in-line pipe assembly needs to be replaced, and the production and maintenance cost is high. A heating chamber is installed in the evaporation device body, a plurality of bundle pipe mechanisms are annularly installed in the heating chamber, each bundle pipe mechanism comprises an upper sleeve, an upper sealing plate, metal pipes, a bundle pipe reinforcing plate, a lower sealing plate and a lower sleeve, and seven metal pipes are arranged in each bundle pipe mechanism. An upper sealing plate is arranged at the upper end of the bundling pipe mechanism, a lower sealing plate is arranged at the lower end of the bundling pipe mechanism, and an upper sleeve is arranged outside the upper portion of the upper sealing plate in a sleeving mode.

Description

Technical Field

[0001] The present invention relates to the technical field of evaporation devices, in particular to an evaporation device using cluster tubes as component units. Background Art

[0002] Evaporators are a common piece of equipment used in industry. Evaporation processes are widely used in the chemical, pharmaceutical, food, environmental protection, and desalination industries, primarily for processes such as feed concentration, product drying, and desalination. Currently, the tubular evaporator is the mainstream equipment type for evaporation processes. Its evaporation modes vary, primarily natural circulation (central circulation, suspended frame, Levin, and external heating); forced circulation; and membrane. Regardless of the evaporation mode, the evaporation process requires a heat source—the energy source for heating the evaporator, primarily saturated steam and electricity. It can handle high-viscosity, scaling, or corrosive materials; it reduces waste heat emissions and enables solvent recovery. Regular cleaning or the use of corrosion-resistant materials is required.

[0003] Chinese patent publication number CN222729529U discloses a high-thermal-conductivity wastewater evaporator, comprising an evaporator body, an evaporator feed port, and multiple inline tube assemblies evenly distributed within the evaporator body. The inline tube assemblies include vertical tubes, each of which is evenly spaced and connected to multiple hollow spheres. The outer wall of the evaporator body is provided with a steam inlet pipe, and the outer side surfaces of the evaporator body are provided with an exhaust pipe and a liquid drain pipe. The gap between adjacent groups of hollow spheres forms an area with a larger front end, a smaller middle end, and a larger rear end. Steam passing through this area is similar to passing through a Laval tube, allowing the steam to disperse fully within the evaporator body, improving the steam dispersion efficiency within the evaporator body. This improves the performance of the inline tube assembly and facilitates uniform heating within the evaporator body.

[0004] The above-mentioned existing technical solutions have the following defects: the existing evaporator exchanges heat through multiple risers, and the steam is dispersed in the gaps formed between multiple groups of in-line tube assemblies. The surface area of ​​the risers is limited, and the heat exchange effect is limited. When the heat exchange demand increases due to a failure of the front-end equipment, it is unable to meet the sudden increase in heat exchange demand. At the same time, the risers are fixed connection structures. When the risers are damaged, they will be blocked, and the entire in-line tube assembly needs to be replaced, which has high production and maintenance costs. Therefore, we propose an evaporator with bundled tubes as the component unit to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide an evaporator with a bundled tube as a component unit, so as to solve the problem proposed in the above background technology that the existing evaporator exchanges heat through multiple risers, the steam is dispersed in the gaps formed between the multiple groups of in-line tube assemblies, the surface area of ​​the risers is limited, and the heat exchange effect is limited. When the heat exchange demand increases due to a failure of the front-end equipment, the sudden increase in heat exchange demand cannot be met. At the same time, the risers are fixed connection structures. When the risers are damaged, they will be blocked, and the entire in-line tube assembly needs to be replaced, resulting in high production and maintenance costs.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an evaporation device with cluster tubes as component units, comprising a water distribution device and an evaporation device body, a heating chamber is installed inside the evaporation device body, and a plurality of cluster tube mechanisms are installed in a ring shape inside the heating chamber, the cluster tube mechanism comprises an upper sleeve, an upper sealing plate, a metal tube, a cluster tube reinforcement plate, a lower sealing plate and a lower sleeve, seven metal tubes are arranged inside the cluster tube mechanism, an upper sealing plate is provided at the upper end of the cluster tube mechanism, a lower sealing plate is provided at the lower end of the cluster tube mechanism, an upper sleeve is provided on the outer surface above the upper sealing plate, a lower sleeve is provided on the outer surface below the lower sealing plate, the upper end of the metal tube passes through the upper sealing plate and extends to the inner surface of the upper sleeve, the lower end surface of the metal tube and the lower end surface of the lower sealing plate are in the same horizontal plane, the water distribution device comprises a liquid distribution pipeline mechanism and a liquid distributor, and the liquid distributor is arranged corresponding to the cluster tube mechanism.

[0007] Preferably, two cluster tube reinforcement plates are evenly distributed between the upper sealing plate and the lower sealing plate, and the upper sealing plate, the cluster tube reinforcement plate and the lower sealing plate are all circular structures. The diameter of the cluster tube reinforcement plate is the same as the outer diameter of the upper sleeve and the lower sleeve, and the material thereof is metal or other high-temperature resistant materials. The upper sealing plate, the cluster tube reinforcement plate and the lower sealing plate are an integrated structure with the outer wall of the metal tube and are made by a casting process. The bottom surface of the lower sealing plate and the bottom end of the metal tube are located in the same horizontal plane, and the upper sealing plate is located 10 cm below the top end of the metal tube, and the diameter of the lower sealing plate is larger than the diameter of the upper sealing plate, and the radius difference is 2 mm. The thickness of the upper sealing plate and the lower sealing plate are both 1 cm, and the thickness of the cluster tube reinforcement plate is 0.5 cm.

[0008] Preferably, a heating chamber upper cover plate is provided at the upper end of the heating chamber, a heating chamber lower cover plate is provided at the lower end of the heating chamber, a heating chamber shell is provided at the outer end of the heating chamber, a sleeve groove is provided in an annular shape inside the heating chamber upper cover plate and the heating chamber lower cover plate, the diameter of the sleeve groove of the heating chamber upper cover plate is larger than the diameter of the upper sleeve but smaller than the diameter of the upper sleeve, the diameter of the sleeve groove of the heating chamber lower cover plate is larger than the diameter of the upper cover plate but smaller than the diameter of the lower cover plate, a steam inlet pipe is sealedly installed at one end of the heating chamber, and a condensate drain pipe is sealedly installed at the other end of the heating chamber.

[0009] Preferably, a temperature sensor and a pressure sensor are installed inside the lower casing of the clustered tube mechanism respectively.

[0010] Preferably, a water distribution device shell is provided at the outer end of the water distribution device, a liquid distribution pipe mechanism is provided at the upper end inside the water distribution device, and a liquid distributor is provided at the lower end inside the water distribution device. The functions of both are to distribute water to the cluster pipe mechanism in the heating chamber. The liquid distribution pipe mechanism includes a liquid inlet pipe, a liquid collecting groove, a liquid distribution pipe, a liquid distribution chamber, a liquid distribution chamber mounting plate and a liquid distribution groove. The liquid distribution chamber is located in the middle position inside the liquid distribution pipe mechanism. The liquid inlet pipe is an L-shaped pipe. The lower end of the liquid inlet pipe is sealed and connected to the middle position above the liquid distribution chamber. The diameter of the liquid distribution chamber is five times the diameter of the liquid inlet pipe. The height of the liquid distribution chamber is 50 cm. The liquid distribution chamber is fixedly connected to the inner wall of the water distribution device through a cross-shaped bracket. A liquid distribution chamber mounting plate is sealed and installed below the liquid distribution chamber.

[0011] Preferably, six liquid distribution pipes are installed in an annular seal around the liquid distribution chamber, and a liquid collecting groove is provided at the outer end of the liquid distribution pipeline mechanism. The outer end of the liquid distribution pipe is sealed and connected to the liquid collecting groove. The diameter of the liquid distribution pipe is 3 cm. A liquid distribution groove is obliquely opened between the outer end of the liquid distribution chamber mounting plate and the inner wall of the water distribution device. A guide groove is opened at one end of the liquid distribution pipe facing the liquid distribution groove, and the guide groove is fitted with the liquid distribution groove. A water distribution device return pipe is sealed and installed on one side of the lower end of the water distribution device, and a water distribution device discharge pipe is sealed and installed on the other side of the lower end of the water distribution device. When distributing water, the liquid enters the liquid distribution chamber from the liquid inlet pipe, then enters the liquid collecting groove through the liquid distribution pipe, and then flows to the liquid distribution groove through the liquid collecting groove, and then flows down to the inner wall of the water distribution device shell through the liquid distribution groove, and then flows to the bottom of the water distribution device, which can ensure that the liquid flow of water entering the water distribution device is slow, thereby ensuring the stability of its liquid level.

[0012] Preferably, the liquid distributor is sealed and connected to the upper casing by a threaded sleeve. The liquid distributor includes a liquid distributor main casing, liquid distributor branch casings, a liquid injection hole, a flow-blocking tube, a liquid distributor platform, a liquid distributor platform fixing frame and a liquid distributor sealing plate. The inner ring of the liquid distributor is provided with a liquid distributor branch casing corresponding to and sealed with the metal tube. The liquid distributor branch casing is sealed and connected to the metal tube. The outer end of the liquid distributor is provided with a liquid distributor main casing. A liquid distributor sealing plate is installed inside the liquid distributor main casing. The liquid distributor sealing plate is located 3 cm above the bottom end of the liquid distributor main casing, and the thickness of the liquid distributor sealing plate is 0.5 cm.

[0013] Preferably, the main sleeve of the liquid distributor and the sealing plate of the liquid distributor are an integral structure, and two circles of liquid injection holes are opened in a ring at the upper end of the main sleeve of the liquid distributor. The function of the liquid injection holes is to slow down the speed of the liquid flow to avoid impact on the inside of the liquid distributor and thus affect the water distribution effect. The upper sleeve is sealed and connected to the main sleeve of the liquid distributor by a screw sleeve. The outer diameter of the branch sleeve of the liquid distributor is larger than the outer diameter of the small metal tube. The bottom of the branch sleeve of the liquid distributor is 1 cm lower than the bottom end of the main sleeve of the liquid distributor and lower than the liquid level in the water distribution device. The inner diameter of the protruding part of the branch sleeve of the liquid distributor is consistent with the inner diameter of the metal tube.

[0014] Preferably, the upper end of the inner part of the liquid distributor sub-sleeve is fixedly installed with a liquid distribution platform through a liquid distribution platform fixing frame. The liquid distribution platform is an umbrella-shaped structure, and a flow blocking tube is sealed and installed in the middle position above the liquid distribution platform. The top opening of the liquid distribution platform is 2 mm lower than the top of the liquid distributor sub-sleeve, and the edge of the liquid distribution platform is 2 mm away from the inner wall of the liquid distributor sub-sleeve. The function of the liquid distribution platform is to allow the liquid flow that overflows the liquid distributor sub-sleeve to be sprinkled on the platform, and then dispersed to the periphery and flow to the tube wall to form a water film. The height of the flow blocking tube exceeds the top of the liquid distributor sub-sleeve, and the inner diameter of the flow blocking tube is half of the inner diameter of the liquid distributor sub-sleeve. The function of the flow blocking tube is to prevent the liquid flow that overflows the top of the liquid distributor sub-sleeve from directly entering the liquid distributor sub-sleeve from the top of the liquid distribution platform, thereby affecting the formation of the water film.

[0015] Preferably, the evaporation device body includes a water distribution device, a heating chamber, a cluster tube mechanism, a water-vapor mixed liquid chamber and a steam-water separator. The water-vapor mixed liquid chamber is sealedly installed below the heating chamber, and the steam-water separator is independent of the evaporation device body. The water-vapor mixed liquid chamber is connected to the steam-water separator through a connecting pipe on one side. A backwash water inlet pipe is sealedly installed on one side below the steam-water separator, and a discharge pipe is sealed on the other side of the lower end of the evaporation device body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention replaces the traditional larger-diameter metal tubes with a cluster tube structure composed of small-diameter metal tubes as the heating unit. Its structure includes 7 small-diameter metal tubes, upper and lower sealing plates, reinforcement plates to maintain the stable structure of the cluster tubes, and upper and lower sleeves. The function of the cluster tube is to achieve faster and more efficient heat exchange through its larger heat transfer surface area and thinner tube wall than traditional heat exchange tubes, ensuring that the evaporation capacity is increased without increasing the scale of the equipment, thereby achieving the purpose of high efficiency and energy saving. After being divided into multiple fine tubes for heat exchange, compared with a single tube heat exchange, the fluid flow rate in the fine tubes is higher, the Reynolds number increases, turbulence is easily formed, the thermal boundary layer is destroyed, the convective heat transfer coefficient is increased, and the heat exchange effect is also enhanced. The cluster tube structure is movably installed in the heating chamber instead of being welded in the heating chamber as in the traditional process, which makes it easy to disassemble and replace. The lower casing of the cluster tube assembly is connected to its lower sealing plate, where highly sensitive pressure and temperature sensors are installed. These sensors monitor the status of the cluster tube assembly and provide accurate information for cleaning and replacement, thereby achieving an intelligent evaporation mode. The cluster tube assembly is suitable for various evaporation modes, including natural circulation, forced circulation, and membrane evaporators. The cluster tube-based evaporation device can be applied to evaporation processes such as dehydration and concentration in the chemical, pharmaceutical, food, and environmental protection industries, as well as in seawater desalination evaporation processes, and has broad application prospects.

[0017] 2. The water distribution device of the present invention consists of a liquid distribution piping system and a liquid distributor with an equal number of cluster tubes. The liquid distribution piping system provides a stable liquid environment for effective water distribution within the cluster tubes. Liquid enters the liquid distribution chamber through the liquid inlet pipe, then flows through the liquid distributor pipe into the liquid collection ditch. From there, it flows down the ditch to the inner wall of the water distribution device housing, ultimately flowing to the bottom of the liquid distribution chamber. This water distribution ensures a smooth liquid flow within the water distribution device, thereby maintaining a stable liquid level. The liquid distributor ensures that the liquid entering the cluster maintains a film-like structure and flows down the tube walls, significantly improving evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A perspective view of the cluster tube mechanism of the present invention; Figure 3 A three-dimensional diagram of the heating chamber and cluster tube structure in the present invention; Figure 4 Schematic diagram of the structure of the liquid distribution pipeline mechanism in the present invention; Figure 5 It is a bottom view of the liquid distribution pipeline mechanism of the present invention; Figure 6 is a three-dimensional diagram of the liquid distributor of the present invention; Figure 7This is a connection diagram of the liquid distributor casing, choke tube, liquid distribution platform, liquid distribution platform fixing frame and liquid distributor sealing plate in the present invention.

[0019] In the figure: 1. water distribution device; 2. heating chamber; 3. cluster pipe mechanism; 4. water-steam mixed liquid chamber; 5. liquid inlet pipe; 6. liquid distribution pipe mechanism; 7. liquid distributor; 8. liquid collecting ditch; 9. liquid distributor; 10. steam inlet pipe; 11. condensate drain pipe; 12. separator connecting pipe; 14. upper casing; 15. upper sealing plate; 16. metal pipe; 17. cluster pipe reinforcement plate; 18. lower sealing plate; 19. lower casing; 20. upper sealing plate of heating chamber; 2 1. Lower sealing plate of the heating chamber; 22. Heating chamber outer shell; 23. Water distribution device shell; 24. Liquid distribution chamber; 25. Evaporation device body; 27. Liquid distribution chamber mounting plate; 28. Liquid distribution groove; 29. ​​Liquid distribution device drain pipe; 30. Water distribution device return pipe; 31. Liquid distributor main sleeve; 32. Liquid distributor branch sleeve; 33. Liquid injection hole; 34. Flow control tube; 35. Liquid distribution platform; 36. Liquid distribution platform fixing frame; 37. Liquid distributor sealing plate; 38. Discharge pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-7 The present invention provides an embodiment: an evaporation device with a cluster tube as a component unit, including a water distribution device 1 and an evaporation device body 25, a heating chamber 2 is installed inside the evaporation device body 25, and a plurality of cluster tube mechanisms 3 are installed in an annular manner inside the heating chamber 2. The cluster tube mechanism 3 includes an upper sleeve 14, an upper sealing plate 15, a metal tube 16, a cluster tube reinforcement plate 17, a lower sealing plate 18 and a lower sleeve 19. Seven metal tubes 16 are arranged inside the cluster tube mechanism 3, and the minimum spacing between the tubes is 2 mm. The upper end of the cluster tube mechanism 3 is provided with an upper sealing plate 15, and the lower end of the cluster tube mechanism 3 is provided with a lower sealing plate 18. The outer part above the upper sealing plate 15 is provided with an upper sleeve 14, and the outer part below the lower sealing plate 18 is provided with a lower sleeve 19. The upper end of the metal tube 16 passes through the upper sealing plate 15 and extends to the inside of the upper sleeve 14. The lower end surface of the metal tube 16 and the lower end surface of the lower sealing plate 18 are in the same horizontal plane. The water distribution device 1 includes a liquid distribution pipeline mechanism 6 and a liquid distributor 7. The liquid distributor 7 is arranged corresponding to the cluster tube mechanism 3.

[0022] See also Figure 2Two cluster tube reinforcement plates 17 are evenly distributed between the upper sealing plate 15 and the lower sealing plate 18. The upper sealing plate 15, the cluster tube reinforcement plate 17 and the lower sealing plate 18 are all circular structures. The diameter of the cluster tube reinforcement plate 17 is the same as the outer diameter of the upper sleeve 14 and the lower sleeve 19. They are made of metal or other high-temperature resistant materials. The upper sealing plate 15, the cluster tube reinforcement plate 17 and the lower sealing plate 18 are an integrated structure with the outer wall of the metal tube 16 and are made by a casting process. The bottom surface of the lower sealing plate 18 and the bottom end of the metal tube 16 are located at the same horizontal plane, and the upper sealing plate 15 is located 10 cm below the top of the metal tube 16. The diameter of the lower sealing plate 18 is larger than the diameter of the upper sealing plate 15, and the radius difference is 2 mm. The thickness of the upper sealing plate 15 and the lower sealing plate 18 are both 1 cm, while the thickness of the cluster tube reinforcement plate 17 is 0.5 cm.

[0023] See also Figure 1-3 The upper end of the heating chamber 2 is provided with a heating chamber upper cover plate 20, the lower end of the heating chamber 2 is provided with a heating chamber lower cover plate 21, and the outer end of the heating chamber 2 is provided with a heating chamber shell 22. The inner ring of the heating chamber upper cover plate 20 and the heating chamber lower cover plate 21 is provided with a sleeve groove, the diameter of the sleeve groove of the heating chamber upper cover plate 20 is larger than the diameter of the upper sleeve 14 but smaller than the diameter of the upper sleeve 14, the diameter of the sleeve groove of the heating chamber lower cover plate 21 is larger than the diameter of the upper cover plate 15, but smaller than the diameter of the lower cover plate 18, which is convenient for the installation and disassembly of the clustering tube mechanism 3, one end of the heating chamber 2 is sealed with a steam inlet pipe 10, and the other end of the heating chamber 2 is sealed with a condensate drain pipe 11, and a reinforcing plate component is provided under the heating chamber 2 for reinforcing and fixing the heating chamber 2, so that the heating chamber 2 can maintain its safe and stable use and operation under pressure.

[0024] See also Figure 2 A temperature sensor and a pressure sensor are installed inside the lower casing 19 of the cluster tube mechanism 3.

[0025] See also Figure 1 、 Figure 4-7, a water distribution device shell 23 is provided at the outer end of the water distribution device 1, a liquid distribution pipe mechanism 6 is provided at the upper end inside the water distribution device 1, and a liquid distributor 7 is provided at the lower end inside the water distribution device 1. The function of both is to distribute water to the cluster pipe mechanism 3 in the heating chamber 2. The liquid distribution pipe mechanism 6 includes a liquid inlet pipe 5, a liquid collecting groove 8, a liquid distribution pipe 9, a liquid distribution cavity 24, a liquid distribution cavity mounting plate 27 and a liquid distribution groove 28. The liquid distribution cavity 24 is located in the middle position inside the liquid distribution pipe mechanism 6. The liquid inlet pipe 5 is an L-shaped pipe. The lower end of the liquid inlet pipe 5 is sealed and connected to the middle position above the liquid distribution cavity 24. The diameter of the liquid distribution cavity 24 is five times the diameter of the liquid inlet pipe 5. The height of the liquid distribution cavity 24 is 50 cm. The liquid distribution cavity 24 passes through The cross-shaped bracket is fixedly connected to the inner wall of the water distribution device 1. A liquid distribution chamber mounting plate 27 is sealed and installed below the liquid distribution chamber 24. Six liquid distribution pipes 9 are annularly sealed and installed around the liquid distribution chamber 24. A liquid collecting groove 8 is provided at the outer end of the liquid distribution pipeline mechanism 6. The outer end of the liquid distribution pipe 9 is sealed and connected to the liquid collecting groove 8. The diameter of the liquid distribution pipe 9 is 3 cm. A liquid distribution groove 28 is obliquely opened between the outer end of the liquid distribution chamber mounting plate 27 and the inner wall of the water distribution device 1. A guide groove is opened at one end of the liquid distribution pipe 9 facing the liquid distribution groove 28, and the guide groove is in contact with the liquid distribution groove 28. A water distribution device return pipe 30 is sealed and installed on one side of the lower end of the water distribution device 1, and a water distribution device drain pipe 29 is sealed and installed on the other side of the lower end of the water distribution device 1. During water distribution, the liquid enters the liquid distribution chamber 34 from the liquid inlet pipe 5, then enters the liquid collecting groove 8 through the liquid distributing pipe 9, flows through the liquid collecting groove 8 to the liquid distribution groove 28, flows down through the liquid distribution groove 28 to the inner wall of the water distribution device 1 shell, and then flows to the bottom of the water distribution device 1. This ensures that the liquid flow in the water distribution device 1 is gentle, thereby ensuring the stability of its liquid level.

[0026] See also Figure 6-7The liquid distributor 7 is sealed and connected to the upper sleeve 14 through a screw sleeve. The liquid distributor 7 includes a liquid distributor main sleeve 31, a liquid distributor branch sleeve 32, a liquid injection hole 33, a flow control tube 34, a liquid distribution platform 35, a liquid distribution platform fixing frame 36 and a liquid distributor sealing plate 37. The inner ring of the liquid distributor 7 is provided with a liquid distributor branch sleeve 32 corresponding to and sealed with the metal tube 16. The liquid distributor branch sleeve 32 is sealed and connected to the metal tube 16. The outer end of the liquid distributor 7 is provided with a liquid distributor main sleeve 31. The liquid distributor sealing plate 37 is installed inside the liquid distributor main sleeve 31. The liquid distributor sealing plate 37 is located 3 cm above the bottom end of the liquid distributor main sleeve 31. The thickness of the liquid distributor sealing plate 37 is 0.5 cm. The main sleeve 31 of the liquid distributor and the sealing plate 37 of the liquid distributor are an integral structure. Two circles of injection holes 33 are opened in a ring at the upper end of the main sleeve 31 of the liquid distributor. The function of the injection holes 33 is to slow down the speed of the liquid flow to avoid impact on the inside of the liquid distributor 7 and thus affect the water distribution effect. The upper sleeve 14 is sealed with the main sleeve 31 of the liquid distributor through the screw sleeve 15. The outer diameter of the branch sleeve 32 of the liquid distributor is larger than the outer diameter of the small metal tube 4. The bottom of the branch sleeve 32 of the liquid distributor is 1 cm lower than the bottom end of the main sleeve 31 of the liquid distributor, and at the same time lower than the liquid level in the water distribution device 1. The inner diameter of the protruding part of the branch sleeve 32 of the liquid distributor is consistent with the inner diameter of the metal tube 4. The upper end of the liquid distributor sub-sleeve 32 is fixedly installed with a liquid distribution platform 35 through a liquid distribution platform fixing frame 36. The liquid distribution platform 35 is an umbrella-shaped structure. A choke tube 34 is sealed and installed in the middle position above the liquid distribution platform 35. The top opening of the liquid distribution platform 35 is 2 mm lower than the top of the liquid distributor sub-sleeve 32, and the edge of the liquid distribution platform 35 is 2 mm away from the inner wall of the liquid distributor sub-sleeve 32. The function of the liquid distribution platform 35 is to allow the liquid flow that overflows the liquid distributor sub-sleeve 32 to be sprinkled on the platform, and then dispersed to the periphery and flow to the pipe wall to form a water film. The height of the choke tube 34 exceeds the top of the liquid distributor sub-sleeve 32, and the inner diameter of the choke tube 34 is half the inner diameter of the liquid distributor sub-sleeve 32. The function of the choke tube 16 is to prevent the liquid flow that overflows the top of the liquid distributor sub-sleeve 32 from directly entering the liquid distributor sub-sleeve 32 from the top of the liquid distribution platform 35, thereby affecting the formation of the water film.

[0027] See also Figure 1 The evaporation device body 25 includes a water distribution device 1, a heating chamber 2, a cluster pipe mechanism 3, a water-vapor mixed liquid chamber 4 and a steam-water separator. The steam-water separator can be set independently. The water-vapor mixed liquid chamber 4 is sealed and installed below the heating chamber 2. The steam-water separator is independent of the evaporation device body 25. The water-vapor mixed liquid chamber 4 is connected to the steam-water separator through a connecting pipe 12 on one side. A backwash water inlet pipe is sealed and installed on one side below the steam-water separator. A discharge pipe 38 is sealed and installed on the other side of the lower end of the evaporation device body 25. When a system failure occurs, the material is discharged through the discharge pipe 38.

[0028] Working Principle: During operation, a lift pump delivers preheated material into the liquid inlet pipe 5. The liquid enters the liquid distribution chamber 34 from the liquid inlet pipe 5, then flows through the liquid distribution pipe 9 into the liquid collecting groove 8. It then flows down through the liquid distribution groove 28 to the inner wall of the water distribution device 1 housing, and then to the bottom of the water distribution device 1. This ensures a gentle flow of liquid into the water distribution device 1, thereby ensuring a stable liquid level. Once a stable liquid level is established, the liquid is distributed to the clustered tube structure 3 via the liquid distributor 7. The umbrella-shaped liquid distribution platform 35 forms an umbrella. Liquid that overflows the liquid distributor's branch sleeve 32 is sprayed onto the distribution platform 35, then dispersed to the surrounding area and onto the tube walls, forming a water film. As the liquid level rises, liquid that overflows the top of the flow-blocking tube 34 enters directly from the top of the distribution platform 35. The liquid can continue to flow along the distribution platform 35, forming a water film, and then enter the heating chamber 2 to introduce high-temperature steam to heat the system. The resulting water film flows downward along the wall of the metal tube 16. After heat exchange, the resulting water-vapor mixture flows into the water-vapor mixture chamber 4 and enters the separation chamber under negative pressure for water-vapor separation, forming secondary steam and concentrated liquid. During the evaporation process, temperature and pressure sensors installed in the lower casing monitor the operating conditions of the cluster tubes. A significant drop in pressure indicates severe scaling of the heat exchange tubes. Evaporation operations are halted and the backwash pump is activated for backwashing. If both the temperature and pressure sensor readings increase simultaneously, this indicates damage and leakage in the corresponding metal tube 16. System operation is immediately halted and the corresponding metal tube 16 is replaced to ensure long-term, efficient operation of the system.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An evaporation device with a cluster tube as a component unit, comprising a water distribution device (1) and an evaporation device body (25), characterized in that: A heating chamber (2) is installed inside the evaporation device body (25), and a plurality of cluster tube mechanisms (3) are installed in an annular manner inside the heating chamber (2). The cluster tube mechanism (3) comprises an upper sleeve (14), an upper sealing plate (15), a metal tube (16), a cluster tube reinforcement plate (17), a lower sealing plate (18) and a lower sleeve (19). Seven metal tubes (16) are arranged inside the cluster tube mechanism (3), an upper sealing plate (15) is provided at the upper end of the cluster tube mechanism (3), and a lower end of the cluster tube mechanism (3) is provided. A lower sealing plate (18) is provided, an upper sleeve (14) is provided on the outer portion above the upper sealing plate (15), and a lower sleeve (19) is provided on the outer portion below the lower sealing plate (18). The upper end of the metal tube (16) passes through the upper sealing plate (15) and extends to the interior of the upper sleeve (14). The lower end surface of the metal tube (16) and the lower end surface of the lower sealing plate (18) are in the same horizontal plane. The water distribution device (1) includes a liquid distribution pipeline mechanism (6) and a liquid distributor (7). The liquid distributor (7) is provided corresponding to the cluster tube mechanism (3).

2. The evaporation device with cluster tubes as component units according to claim 1, characterized in that: Two cluster tube reinforcement plates (17) are evenly distributed between the upper sealing plate (15) and the lower sealing plate (18); the upper sealing plate (15), the cluster tube reinforcement plate (17) and the lower sealing plate (18) are all circular structures; the diameter of the cluster tube reinforcement plate (17) is the same as the outer diameter of the upper sleeve (14) and the lower sleeve (19); the upper sealing plate (15), the cluster tube reinforcement plate (17) and the lower sealing plate (18) are an integral structure with the outer wall of the metal tube (16); the bottom surface of the lower sealing plate (18) and the bottom end of the metal tube (16) are located at the same horizontal plane.

3. The evaporation device with cluster tubes as component units according to claim 2, characterized in that: The upper end of the heating chamber (2) is provided with a heating chamber upper sealing plate (20), the lower end of the heating chamber (2) is provided with a heating chamber lower sealing plate (21), the outer end of the heating chamber (2) is provided with a heating chamber shell (22), the inner rings of the heating chamber upper sealing plate (20) and the heating chamber lower sealing plate (21) are provided with sleeve grooves, the diameter of the sleeve groove of the heating chamber upper sealing plate (20) is larger than the diameter of the upper sleeve (14) but smaller than the diameter of the upper sleeve (14), the diameter of the sleeve groove of the heating chamber lower sealing plate (21) is larger than the diameter of the upper sealing plate (15) but smaller than the diameter of the lower sealing plate (18), one end of the heating chamber (2) is sealed with a steam inlet pipe (10), and the other end of the heating chamber (2) is sealed with a condensate drain pipe (11).

4. The evaporation device with cluster tubes as component units according to claim 1, characterized in that: A temperature sensor and a pressure sensor are respectively installed inside the lower casing (19) of the cluster tube mechanism (3).

5. The evaporation device with cluster tubes as component units according to claim 1, characterized in that: The outer end of the water distribution device (1) is provided with a water distribution device housing (23), the upper end of the water distribution device (1) is provided with a liquid distribution pipeline mechanism (6), and the lower end of the water distribution device (1) is provided with a liquid distributor (7). The liquid distribution pipeline mechanism (6) comprises a liquid inlet pipe (5), a liquid collecting groove (8), a liquid distribution pipe (9), a liquid distribution cavity (24), a liquid distribution cavity mounting plate (27) and a liquid distribution groove (28). The liquid distribution cavity (24) is located at a middle position inside the liquid distribution pipeline mechanism (6). The liquid inlet pipe (5) is an L-shaped pipe. The lower end of the liquid inlet pipe (5) is sealed and connected to the middle position above the liquid distribution cavity (24). The liquid distribution cavity mounting plate (27) is sealed and mounted below the liquid distribution cavity (24).

6. The evaporation device with cluster tubes as component units according to claim 5, characterized in that: Six liquid distribution pipes (9) are installed in an annular seal around the liquid distribution chamber (24); a liquid collecting groove (8) is provided at the outer end of the liquid distribution pipe mechanism (6); the outer end of the liquid distribution pipe (9) is sealed and connected to the liquid collecting groove (8); a liquid distribution groove (28) is obliquely provided between the outer end of the liquid distribution chamber mounting plate (27) and the inner wall of the water distribution device (1); a guide groove is provided at one end of the liquid distribution pipe (9) facing the liquid distribution groove (28); the guide groove is in contact with the liquid distribution groove (28); a water distribution device return pipe (30) is sealed and installed on one side of the lower end of the water distribution device (1); and a water distribution device discharge pipe (29) is sealed and installed on the other side of the lower end of the water distribution device (1).

7. The evaporation device with cluster tubes as component units according to claim 1, characterized in that: The liquid distributor (7) is sealed and connected to the upper sleeve (14) via a threaded sleeve. The liquid distributor (7) comprises a liquid distributor main sleeve (31), a liquid distributor branch sleeve (32), a liquid injection hole (33), a flow blocking tube (34), a liquid distribution platform (35), a liquid distribution platform fixing frame (36) and a liquid distributor sealing plate (37). The liquid distributor branch sleeve (32) corresponding to and sealed to the metal tube (16) is provided in an annular shape inside the liquid distributor (7). The liquid distributor branch sleeve (32) is sealed and connected to the metal tube (16). The outer end of the liquid distributor (7) is provided with a liquid distributor main sleeve (31), and the liquid distributor sealing plate (37) is installed inside the liquid distributor main sleeve (31).

8. The evaporation device with cluster tubes as component units according to claim 7, characterized in that: The liquid distributor main sleeve (31) and the liquid distributor sealing plate (37) are an integral structure. Two circles of liquid injection holes (33) are formed in an annular manner at the upper end of the liquid distributor main sleeve (31). The upper sleeve (14) is sealedly connected to the liquid distributor main sleeve (31) via a threaded sleeve (15).

9. The evaporation device with cluster tubes as component units according to claim 8, characterized in that: A liquid distributing platform (35) is fixedly mounted on the upper end of the liquid distributing device sub-sleeve (32) via a liquid distributing platform fixing frame (36). The liquid distributing platform (35) is an umbrella-shaped structure. A flow blocking tube (34) is sealed and mounted at a middle position above the liquid distributing platform (35). The height of the flow blocking tube (34) exceeds the top end of the liquid distributing device sub-sleeve (32).

10. The evaporation device with cluster tubes as component units according to claim 1, characterized in that: The evaporation device body (25) comprises a water distribution device (1), a heating chamber (2), a cluster tube mechanism (3), a water-vapor mixed liquid chamber (4) and a steam-water separator. The water-vapor mixed liquid chamber (4) is sealed and installed below the heating chamber (2). The steam-water separator is independent of the evaporation device body (25). The water-vapor mixed liquid chamber (4) is connected to the steam-water separator via a connecting pipe (12) on one side. A backwash water inlet pipe is sealed and installed on one side below the steam-water separator. A discharge pipe (38) is sealed and installed on the other side of the lower end of the evaporation device body (25).

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