Water bath vaporizer with guide vanes

Abstract

The application relates to the field of boiler auxiliary equipment, and discloses a water bath vaporizer with guide vanes, which comprises a fixed base, a vaporizer main body and a hot water tank are fixedly arranged on the top of the fixed base, a cover is detachably arranged on the top of the vaporizer main body, a rotating shaft is rotatably arranged on the bottom of the cover, and a flow guide mechanism is arranged on the rotating shaft; two pipe bundles are fixedly arranged on the inner side of the vaporizer main body, the feeding end and the discharging end of the two pipe bundles extend out of the vaporizer main body, medium pipelines are fixedly arranged on the two feeding ends, control housings are fixedly arranged on the outer sides of the two medium pipelines, and slow mechanisms are arranged on the two control housings. The application has the following advantages and effects: through the rotation of the impeller, the multiple vanes on the impeller can guide the hot water to flow in a specific direction, the pipe bundle surface is uniformly heated, the heat exchange effect is improved, the flow speed of the medium can be regulated and controlled, the time of the medium in the pipe bundle is prolonged, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of boiler auxiliary equipment technology, and in particular to a water bath vaporizer with guide vanes. Background Technology

[0002] Boiler auxiliary equipment refers to the supporting devices that operate around the boiler body, providing functions such as fuel supply, media handling, heat exchange, and safety control. It encompasses fuel preparation and delivery systems, ventilation and dust removal equipment, water treatment and heat recovery devices, and instrumentation control and safety protection systems. Its core function is to ensure the efficient, safe, and stable operation of the boiler, improve energy utilization, and reduce pollutant emissions. It is a crucial component of the boiler system in achieving energy conversion and production goals.

[0003] In existing technologies, when boilers use liquid fuels (such as LNG and LPG), the liquid fuel must first be vaporized into a gaseous state before combustion. Currently, water bath vaporizers are mostly used to complete this phase change process. However, existing water bath vaporizers have a high thermal resistance coefficient on the tube surface, resulting in poor heat exchange efficiency. Furthermore, the medium flow velocity is prone to be too fast, leading to low heat exchange efficiency. Consequently, liquid may still be present in the exhaust gas. In this case, gas-liquid separation equipment is required to perform secondary vaporization of the liquid, which greatly affects the working efficiency.

[0004] Therefore, we propose a water bath vaporizer with guide vanes to solve the above problems. Utility Model Content

[0005] To address the problems of poor heat exchange performance and excessively fast medium flow, this application provides a water bath vaporizer with guide vanes.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a water bath vaporizer with guide vanes, comprising a fixed base, a vaporizer body and a hot water tank fixedly installed on the top of the fixed base, a detachable cover installed on the top of the vaporizer body, a rotating shaft rotatably installed on the bottom of the cover, and a flow guiding mechanism provided on the rotating shaft; two tube bundles are fixedly installed on the inner side of the vaporizer body, the inlet and outlet ends of the two tube bundles extend out of the vaporizer body, a medium pipe is fixedly installed on each of the two inlet ends, a control housing is fixedly installed on the outer side of each of the two medium pipes, and a slow-speed mechanism is provided on each of the two control housings.

[0007] A further feature of this invention is that a heating sleeve is fixedly fitted on the outer side of the vaporizer body, and multiple heating chambers are opened inside the heating sleeve, with electric heating rods fixedly installed on the inner side of each of the multiple heating chambers.

[0008] By adopting the above technical solution, it is convenient to heat the vaporizer body.

[0009] A further feature of this invention is that the flow guiding mechanism includes an impeller and multiple fins, the impeller is fixedly sleeved on the outer side of the rotating shaft, multiple blades are fixedly installed on the outer side of the impeller, and fins are fixedly installed on one side of each of the multiple blades.

[0010] By adopting the above technical solution, the contact area with hot water can be further increased, while small-scale eddies are generated to enhance heat transfer.

[0011] A further feature of this invention is that a rotary servo motor is fixedly installed on the top of the cover, and the output shaft of the rotary servo motor is fixedly connected to the rotating shaft.

[0012] By adopting the above technical solution, the rotating shaft can be driven to rotate by rotating the servo motor.

[0013] A further feature of this invention is that: a top cover is detachably installed on the top of the hot water tank, two electric heaters are fixedly inserted through the top of the top cover, a circulation pump is fixedly installed on the inner wall of the bottom of the hot water tank, a circulation water pipe is fixedly installed on the inner wall of the vaporizer body, both ends of the circulation water pipe extend out of the vaporizer body, one end of the circulation water pipe is connected to the outlet of the circulation pump, and an electrically controlled valve is fixedly installed on the other end of the circulation water pipe, the electrically controlled valve extends into the hot water tank, and multiple hot water holes are opened on the outer side of the circulation water pipe.

[0014] By adopting the above technical solution, it is easy to fill the vaporizer body with hot water.

[0015] A further feature of this invention is that each of the two control housings has a lifting hole on its top and a translation hole on one side.

[0016] By adopting the above technical solution, it is convenient for the wedge-shaped column and the movable column to move.

[0017] A further configuration of this utility model is as follows: the slow-speed mechanism includes a wedge-shaped column, a valve stem, a valve plate, a return spring, a moving column, a threaded rod, and a drive assembly. A wedge-shaped column is slidably installed on the inner side of the lifting hole, and a wedge-shaped hole is formed on the outer side of the wedge-shaped column. A moving column is slidably installed on the inner side of the translation hole, and a wedge-shaped groove is formed on the outer side of the moving column. The moving column slides on the inner side of the wedge-shaped hole, and the bottom inner wall of the wedge-shaped groove slides in contact with the inner wall of the wedge-shaped hole. A valve stem is fixedly installed at the bottom end of the wedge-shaped column, and a valve plate is fixedly installed at the bottom end of the valve stem. A valve seat is provided on the inner side of the medium pipeline, and the valve plate is adapted to the valve seat. A return spring is sleeved on the outer side of the valve stem, and the top end of the return spring is fixedly connected to the bottom end of the wedge-shaped column. The bottom end of the return spring is fixedly connected to the bottom inner wall of the lifting hole. A threaded rod is fixedly installed at one end of the moving column.

[0018] By adopting the above technical solution, the moving column can be moved by moving the threaded rod.

[0019] A further feature of this invention is that the drive assembly includes a nut, a driven gear, a driving gear, and a drive servo motor. A control chamber is provided inside the control housing. A driven gear and a driving gear are rotatably mounted on one inner wall of the control chamber, and the driven gear and driving gear mesh with each other. A nut is fixedly mounted on one side of the driven gear. A threaded rod rotatably passes through the driven gear and is threadedly connected to the nut. A drive servo motor is fixedly mounted on one inner wall of the control chamber, and the output shaft of the drive servo motor is fixedly connected to the driven gear.

[0020] By adopting the above technical solution, the driven gear can be rotated by driving a servo motor.

[0021] This application includes at least one of the following beneficial technical effects:

[0022] This application utilizes a flow guiding mechanism consisting of a rotating shaft and an impeller. By rotating the impeller, multiple blades on it can guide hot water to flow in a specific direction, reducing the dead zone of the water flow, ensuring uniform heating of the tube bundle surface, and the blades make the water flow turbulent, which breaks the laminar boundary layer on the tube bundle surface, reduces thermal resistance, and improves the heat exchange effect.

[0023] This application utilizes a slow-speed mechanism composed of a wedge-shaped column and a valve stem to control the downward or upward movement of the valve plate, thereby opening or closing the medium pipeline, regulating the flow rate of the medium, preventing the medium flow rate from being too fast, which would result in the presence of liquid in the discharged gas, extending the time the medium spends in the tube bundle, and also helping to improve heat exchange efficiency and increase the practicality of the equipment. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a water bath vaporizer with guide vanes proposed in this embodiment;

[0025] Figure 2 This is a three-dimensional structural breakdown diagram of a water bath vaporizer with guide vanes proposed in this embodiment;

[0026] Figure 3 This is a three-dimensional structural diagram of the impeller of a water bath vaporizer with guide vanes proposed in this embodiment;

[0027] Figure 4 This is a three-dimensional structural diagram of a hot water tank with a guide vane for a water bath vaporizer proposed in this embodiment;

[0028] Figure 5This is a three-dimensional structural breakdown diagram of the tube bundle of a water bath vaporizer with guide vanes proposed in this embodiment;

[0029] Figure 6 This is a three-dimensional cross-sectional view of a slow-speed structure of a water bath vaporizer with guide vanes proposed in this embodiment;

[0030] Figure 7 This is a three-dimensional structural breakdown diagram of a slow-speed structure of a water bath vaporizer with guide vanes proposed in this embodiment.

[0031] In the diagram: 1. Fixed base; 2. Vaporizer body; 3. Heating sleeve; 4. Heating rod; 5. Cover; 6. Rotating servo motor; 7. Shaft; 8. Impeller; 9. Fins; 10. Hot water tank; 11. Top cover; 12. Electric heater; 13. Circulating water pipe; 14. Electrically controlled valve; 15. Circulating pump; 16. Pipe bundle; 17. Medium pipeline; 18. Control housing; 19. Wedge column; 20. Valve stem; 21. Valve plate; 22. Return spring; 23. Moving column; 24. Threaded rod; 25. Nut; 26. Driven gear; 27. Driven gear; 28. Drive servo motor. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0033] This application discloses a water bath vaporizer with guide vanes, including a fixed base 1. A vaporizer body 2 and a hot water tank 10 are fixedly installed on the top of the fixed base 1. A cover 5 is detachably installed on the top of the vaporizer body 2. A rotating shaft 7 is rotatably installed on the bottom of the cover 5. A flow guiding mechanism is provided on the rotating shaft 7. Two tube bundles 16 are fixedly installed on the inner side of the vaporizer body 2. The inlet and outlet ends of the two tube bundles 16 extend out of the vaporizer body 2. A medium pipe 17 is fixedly installed on each of the two inlet ends. A control housing 18 is fixedly installed on the outer side of each of the two medium pipes 17. A slow-speed mechanism is provided on each of the two control housings 18.

[0034] Specifically, a heating sleeve 3 is fixedly sleeved on the outside of the vaporizer body 2. Multiple heating chambers are opened inside the heating sleeve 3, and electric heating rods 4 are fixedly installed on the inside of each heating chamber to facilitate heating of the vaporizer body 2.

[0035] Specifically, the flow guiding mechanism includes an impeller 8 and multiple fins 9. The impeller 8 is fixedly sleeved on the outside of the rotating shaft 7. Multiple blades are fixedly installed on the outside of the impeller 8. Fins 9 are fixedly installed on one side of each blade, which can further increase the contact area with hot water and generate small-scale eddies to enhance heat transfer.

[0036] Specifically, a rotary servo motor 6 is fixedly installed on the top of the cover 5. The output shaft of the rotary servo motor 6 is fixedly connected to the rotating shaft 7, and the rotating shaft 7 can be driven to rotate by the rotary servo motor 6.

[0037] Specifically, a top cover 11 is detachably installed on the top of the hot water tank 10. Two electric heaters 12 are fixedly installed through the top of the top cover 11. A circulation pump 15 is fixedly installed on the inner wall of the bottom of the hot water tank 10. A circulation water pipe 13 is fixedly installed on the inner wall of the vaporizer body 2. Both ends of the circulation water pipe 13 extend out of the vaporizer body 2. One end of the circulation water pipe 13 is connected to the outlet of the circulation pump 15. An electric control valve 14 is fixedly installed on the other end of the circulation water pipe 13. The electric control valve 14 extends into the hot water tank 10. Multiple hot water holes are opened on the outside of the circulation water pipe 13 to facilitate hot water filling the vaporizer body 2.

[0038] Specifically, both control housings 18 have lifting holes on their tops and translation holes on one side to facilitate the movement of the wedge column 19 and the moving column 23.

[0039] Specifically, the slow-speed mechanism includes a wedge-shaped column 19, a valve stem 20, a valve plate 21, a return spring 22, a moving column 23, a threaded rod 24, and a drive assembly. The wedge-shaped column 19 is slidably mounted inside the lifting hole, and a wedge-shaped hole is formed on the outer side of the wedge-shaped column 19. The moving column 23 is slidably mounted inside the translation hole, and a wedge-shaped groove is formed on the outer side of the moving column 23. The moving column 23 slides inside the wedge-shaped hole, and the bottom inner wall of the wedge-shaped groove slides in contact with the inner wall of the wedge-shaped hole. The bottom end of the wedge-shaped column 19... A valve stem 20 is fixedly installed, and a valve plate 21 is fixedly installed at the bottom end of the valve stem 20. A valve seat is provided on the inner side of the medium pipeline 17, and the valve plate 21 is adapted to the valve seat. A return spring 22 is sleeved on the outer side of the valve stem 20. The top end of the return spring 22 is fixedly connected to the bottom end of the wedge column 19, and the bottom end of the return spring 22 is fixedly connected to the bottom inner wall of the lifting hole. A threaded rod 24 is fixedly installed at one end of the moving column 23, and the moving column 23 can be moved by moving the threaded rod 24.

[0040] Specifically, the drive assembly includes a nut 25, a driven gear 26, a driving gear 27, and a drive servo motor 28. The control housing 18 has a control chamber inside. The driven gear 26 and the driving gear 27 are rotatably mounted on one inner wall of the control chamber. The driven gear 26 and the driving gear 27 mesh with each other. The nut 25 is fixedly mounted on one side of the driven gear 26. The threaded rod 24 rotatably passes through the driven gear 26 and is threadedly connected to the nut 25. The drive servo motor 28 is fixedly mounted on one inner wall of the control chamber. The output shaft of the drive servo motor 28 is fixedly connected to the driven gear 26, and the driven gear 26 can be rotated by the drive servo motor 28.

[0041] Working Principle: When vaporizing the medium, the operator connects the pipeline to the flange of the medium pipeline 17 and starts the equipment. Two electric heaters 12 and multiple electric heating rods 4 are activated to heat the water in the hot water tank 10 and the vaporizer body 2, respectively. When the temperature reaches 60-70 degrees Celsius, the circulation pump 15 is started. The circulation pump 15 delivers hot water into the circulation water pipe 13. The hot water flows out through multiple hot water holes on the surface of the circulation water pipe 13, filling the interior of the vaporizer body 2 and thus heating the two tube bundles 16. Subsequently, the rotation servo motor 6 is started, which drives the rotating shaft 7 to rotate, thereby driving multiple impellers 8 to rotate. Each blade on the impeller 8 has a fin 9 fixedly installed on one side. Through the rotation of the impeller 8, the multiple blades and fins 9 guide the hot water to flow in a specific direction, increasing the contact area between the hot water and the tube bundles 16, ensuring that the surface of the tube bundles 16 is heated evenly. At the same time, the blades make the water flow turbulent, which can disrupt the flow of hot water. The laminar boundary layer on the surface of tube bundle 16 reduces thermal resistance and improves heat exchange efficiency. At this time, the operator starts two drive servo motors 28. The drive servo motors 28 start and drive the drive gear 27 to rotate, which in turn drives the driven gear 26 to rotate. The driven gear 26 rotates and drives the nut 25 to rotate. The inner thread of the nut 25 is connected to a threaded rod 24. One end of the threaded rod 24 is fixedly installed with a moving column 23. The outer side of the moving column 23 has a wedge-shaped groove, which matches the wedge-shaped hole on the outer side of the wedge column 19. The moving column 23 cannot rotate but can only move horizontally. Therefore, the rotation of the nut 25 drives the threaded rod 24 to move axially. The movement of the moving column 23 drives the wedge column 19 to rise or fall through the wedge groove. The movement of the wedge column 19 drives the valve stem 20 to move, which in turn drives the valve plate 21 to rise or fall, thereby controlling the flow rate of the medium in the medium pipeline 17. This prolongs the time the medium spends in the tube bundle 16 and also helps to improve heat exchange efficiency, increasing the practicality of the equipment.

[0042] With the above structure, the water bath vaporizer with guide vanes provided in this application can guide hot water to flow in a specific direction by rotating the impeller 8 and using multiple vanes on it, reducing the dead zone of water flow, ensuring uniform heating of the tube bundle 16 surface, and making the water flow turbulent, breaking the laminar boundary layer on the surface of the tube bundle 16, reducing thermal resistance, improving heat exchange effect, and controlling the valve plate 21 to move down or up, thereby realizing the opening or closing of the medium pipeline 17, regulating the flow rate of the medium, preventing the medium flow rate from being too fast, resulting in the presence of liquid in the discharged gas, extending the time of the medium in the tube bundle 16, and also helping to improve heat exchange efficiency, increasing the practicality of the equipment.

[0043] In the specific implementation of this application, the circulating pump 15 pumps hot water from the hot water tank 10 into the vaporizer body 2 through the circulating water pipe 13. The circulating water pipe 13 has evenly spaced hot water holes with a diameter of 3-5 mm and a spacing of 50-80 mm to ensure that the hot water is evenly sprayed onto the surface of the tube bundle 16. The electrically controlled valve 14 is a proportional regulating valve, and its opening is adjusted in real time by the PLC controller according to the water temperature inside the vaporizer body 2 to ensure that the water temperature is stable within the range of 60-70℃. If the temperature is below 60℃, the electric heater 12 and the heating rod 4 automatically increase their power; if the temperature exceeds 70℃, the electrically controlled valve 14 increases its opening to accelerate the return of hot water to the hot water tank 10 for cooling.

[0044] In the specific implementation of this application, the rotational speed of the servo motor 6 is set to 100-300 rpm, driving the impeller 8 to rotate. The guide blades (fins 9) on the impeller 8 are made of stainless steel with a thickness of 2 mm and an inclination angle of 30-45° to maximize the disturbance of the water flow. Experimental data show that this structure can reduce the thermal resistance coefficient of the tube bundle 16 surface by more than 40% and improve the heat exchange efficiency by 35%. In addition, the ends of the fins 9 are provided with wavy guide grooves to further disrupt the laminar boundary layer and ensure that the medium is uniformly heated within the tube bundle 16.

[0045] In the specific implementation of this application, the drive servo motor 28 drives the nut 25 to rotate via the drive gear 27 and the driven gear 26. The thread pitch of the threaded rod 24 is 2mm. For every 1mm translation of the moving column 23, the wedge column 19 can be raised or lowered by 0.5mm, thereby adjusting the opening of the valve plate 21. The valve plate 21 uses polytetrafluoroethylene sealing material, and the gap between it and the valve seat is adjustable from 0.1 to 1mm to adapt to the viscosity requirements of different media (such as LNG or LPG). The PLC controller dynamically adjusts the direction and speed of the drive servo motor 28 based on the feedback from the flow sensor at the inlet of the medium pipeline 17 to ensure that the medium flow rate is controlled within the optimal range of 0.5-1.5m / s, avoiding gas-liquid mixing problems.

[0046] The problem of "low heat exchange efficiency" mentioned in the background of this application is solved by forced turbulence and closed-loop temperature control of the flow guiding mechanism; the problem of "excessive medium flow rate" is solved by dynamic valve plate adjustment of the slow-speed mechanism. Experiments have shown that this solution can achieve a gas purity of over 99.5% after vaporization, eliminating the need for secondary gas-liquid separation and significantly improving working efficiency.

[0047] In the specific implementation of this application, a composite thermal disturbance design is further adopted. The guide blades of the impeller 8 and the fins 9 form a dual turbulence structure, which not only enhances the turbulence effect but also generates micro-vortices through the wave-shaped guide grooves at the ends of the fins, further reducing thermal resistance. Furthermore, adaptive flow rate control is adopted. The slow-speed mechanism combines mechanical transmission (wedge-shaped column 19 and threaded rod 24) with electrical control feedback (PLC + flow sensor) to achieve real-time and precise adjustment of the medium flow rate, solving the problem of lag in traditional valve response. Furthermore, a modular design is adopted. The multiple heating chambers of the heating sleeve 3 can be independently temperature-controlled, and users can increase or decrease the number of heating rods 4 according to actual needs, making it suitable for vaporization scenarios of different capacities.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water bath vaporizer with guide vanes, characterized in that, Includes a fixed base (1), on the top of which a vaporizer body (2) and a hot water tank (10) are fixedly installed. A cover (5) is detachably installed on the top of the vaporizer body (2), and a rotating shaft (7) is rotatably installed on the bottom of the cover (5). A flow guiding mechanism is provided on the rotating shaft (7). Two tube bundles (16) are fixedly installed on the inner side of the vaporizer body (2). The inlet and outlet ends of the two tube bundles (16) extend out of the vaporizer body (2). Medium pipes (17) are fixedly installed on the two inlet ends. Control housings (18) are fixedly installed on the outer side of the two medium pipes (17). Slow-speed mechanisms are provided on the two control housings (18).

2. A water bath vaporizer with guide vanes according to claim 1, characterized in that: A heating sleeve (3) is fixedly sleeved on the outside of the vaporizer body (2). Multiple heating chambers are opened inside the heating sleeve (3), and electric heating rods (4) are fixedly installed on the inner side of each of the multiple heating chambers.

3. A water bath vaporizer with guide vanes according to claim 1, characterized in that: The flow guiding mechanism includes an impeller (8) and multiple fins (9). The impeller (8) is fixedly sleeved on the outside of the rotating shaft (7). Multiple blades are fixedly installed on the outside of the impeller (8), and fins (9) are fixedly installed on one side of each of the multiple blades.

4. A water bath vaporizer with guide vanes according to claim 3, characterized in that: A rotary servo motor (6) is fixedly installed on the top of the cover (5), and the output shaft of the rotary servo motor (6) is fixedly connected to the rotating shaft (7).

5. A water bath vaporizer with guide vanes according to claim 1, characterized in that: The top of the hot water tank (10) is detachably fitted with a top cover (11), and two electric heaters (12) are fixedly inserted through the top of the top cover (11). A circulation pump (15) is fixedly installed on the inner wall of the bottom of the hot water tank (10). A circulation water pipe (13) is fixedly installed on the inner wall of the vaporizer body (2). Both ends of the circulation water pipe (13) extend out of the vaporizer body (2). One end of the circulation water pipe (13) is connected to the outlet of the circulation pump (15). An electric control valve (14) is fixedly installed on the other end of the circulation water pipe (13). The electric control valve (14) extends into the hot water tank (10). Multiple hot water holes are opened on the outside of the circulation water pipe (13).

6. A water bath vaporizer with guide vanes according to claim 1, characterized in that: Both control housings (18) have lifting holes on their tops and translation holes on their sides.

7. A water bath vaporizer with guide vanes according to claim 6, characterized in that: The slow-speed mechanism includes a wedge-shaped column (19), a valve stem (20), a valve plate (21), a return spring (22), a moving column (23), a threaded rod (24), and a drive assembly. The wedge-shaped column (19) is slidably mounted on the inner side of the lifting hole. A wedge-shaped hole is formed on the outer side of the wedge-shaped column (19). A moving column (23) is slidably mounted on the inner side of the translation hole. A wedge-shaped groove is formed on the outer side of the moving column (23). The moving column (23) slides on the inner side of the wedge-shaped hole. The bottom inner wall of the wedge-shaped groove slides in contact with the inner wall of the wedge-shaped hole. A valve stem (20) is fixedly installed at the bottom end of the wedge column (19), and a valve plate (21) is fixedly installed at the bottom end of the valve stem (20). A valve seat is provided on the inner side of the medium pipeline (17), and the valve plate (21) is adapted to the valve seat. A return spring (22) is sleeved on the outer side of the valve stem (20). The top end of the return spring (22) is fixedly connected to the bottom end of the wedge column (19), and the bottom end of the return spring (22) is fixedly connected to the bottom inner wall of the lifting hole. A threaded rod (24) is fixedly installed at one end of the moving column (23).

8. A water bath vaporizer with guide vanes according to claim 7, characterized in that: The drive assembly includes a nut (25), a driven gear (26), a driving gear (27), and a drive servo motor (28). The control housing (18) has a control chamber inside. The driven gear (26) and the driving gear (27) are rotatably mounted on one side of the inner wall of the control chamber. The driven gear (26) and the driving gear (27) mesh with each other. The nut (25) is fixedly mounted on one side of the driven gear (26). The threaded rod (24) rotates through the driven gear (26) and is threadedly connected to the nut (25). The drive servo motor (28) is fixedly mounted on one side of the inner wall of the control chamber. The output shaft of the drive servo motor (28) is fixedly connected to the driven gear (26).

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