A high-efficiency boiler steam waste heat recovery device

Abstract

The utility model discloses a kind of boiler steam waste heat efficient recovery devices, it is related to energy recovery and utilization technical field, specifically a kind of boiler steam waste heat efficient recovery device, including support frame, the support frame is symmetrically arranged, and support frame middle is equipped with stand, air intake hopper is installed in stand left side, power generation box is installed in air intake hopper top, rotating shaft is rotatably connected in power generation box interior, and the surface of rotating shaft is installed with the guide vane of array arrangement, steam flows from bottom to top, drives rotating shaft rotation, makes generator of rotating shaft connection power generation, and generator converts steam kinetic energy into electric energy, condensing tank is installed in power generation box top, multiple condensers are installed in condensing tank interior, and condenser carries out heat exchange to high-temperature steam, and flash tank is installed in stand right side, booster pump is installed in condensing tank top, and flash tank is communicated with booster pump, and booster pump mixes and pressurizes low-temperature steam with low-pressure steam and transports, improve the utilization of low-temperature waste heat steam.

Description

Technical Field

[0001] This utility model relates to the field of energy recovery and utilization technology, specifically to a high-efficiency boiler steam waste heat recovery device. Background Technology

[0002] In traditional boiler systems, a large amount of waste heat resources such as high-temperature flue gas and steam condensate are not fully utilized and are directly discharged into the environment, resulting in energy waste. Existing devices have poor steam utilization rates, and it is difficult to achieve ideal heat exchange effects for the recovery of low-temperature waste heat (200-100 degrees Celsius). Therefore, we have proposed a high-efficiency boiler steam waste heat recovery device. Utility Model Content

[0003] This invention provides a high-efficiency boiler steam waste heat recovery device, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency boiler steam waste heat recovery device includes a support frame symmetrically arranged on both sides. A column is located in the middle of the support frame, and an air inlet hopper is installed on the top left side of the column. The air inlet hopper is fixedly connected to the column and the support frame. A generator box is installed on the top of the air inlet hopper, and a rotating shaft is rotatably connected inside the generator box. Steam flowing from bottom to top can rotate the shaft. A condenser box is installed on the top of the generator box, and multiple condensers are installed inside the condenser box. A flash tank is installed on the right side of the column, and the flash tank can generate steam. A booster pump is installed on the top of the condenser box, and the upper end of the booster pump is connected to the flash tank. The booster pump can mix the cooled steam and the steam in the flash tank, and pressurize and deliver the pressurized steam. The air inlet hopper, generator box, condenser box, and booster pump are interconnected.

[0005] Preferably, the outer surface of the rotating shaft is equipped with an array of guide plates, a platform is installed in the middle of the left inner sidewall of the support frame, a generator is installed on the upper surface of the platform, and the output shaft of the generator passes through the sidewall of the generator box and is fixedly connected to the axis of the rotating shaft.

[0006] Preferably, a crossbeam is installed on the top right side of the column, and the other end of the crossbeam is fixedly connected to the inner wall of the right support frame. Multiple flash tanks are installed on the upper surface of the crossbeam, and a pipe is installed on the upper end of the flash tank. The flash tank is connected to the outlet of the condenser through the pipe.

[0007] Preferably, a second pipe is installed on the top of the flash tank, the lower end of the second pipe is connected to the flash tank in a one-to-one correspondence, and the upper end pipe is combined into one and connected to the booster pump.

[0008] Preferably, the lower end of the flash tank is equipped with a pipe three, and the flash tanks are connected in series through the pipe three.

[0009] Preferably, the condenser includes condenser tubes and fins. The condenser tubes are arranged in multiple layers with S-shaped bends from bottom to top, and each layer of the condenser tubes has an array of cylindrical fins installed on its outer surface.

[0010] Preferably, a second crossbeam is horizontally installed in the middle of the bottom surface of the condenser tube, and the two ends of the second crossbeam are fixedly connected to the inner side wall of the condenser box.

[0011] Preferably, the air intake hopper is cylindrical in the middle and funnel-shaped at the top and bottom.

[0012] This utility model has the following beneficial effects: 1. This boiler steam waste heat recovery device has a column in the middle of the symmetrical support columns. An air inlet hopper is installed on the left side of the column, and a generator box is installed on the top of the air inlet hopper. A rotating shaft is installed inside the generator box, and a guide plate is installed on the outer surface of the rotating shaft. The high temperature (500-200 degrees) high pressure steam in the initial stage flows from bottom to top, driving the rotating shaft to rotate, so that the generator connected to the rotating shaft generates electricity. A condenser box is installed on the top of the generator box, and a condenser is installed inside the condenser box. The condenser exchanges heat with the steam in the high temperature section, removes some of the heat from the steam, and heats the water in the condenser.

[0013] 2. This boiler steam waste heat recovery device has a flash tank installed on the right side of the column. The outlet of the condenser is connected to the flash tank through a pipe. The water after heat exchange in the condenser flows into the flash tank, where it flashes and produces steam. The remaining water after heat exchange is stored in the flash tank for boiler feed, reducing fuel consumption. The top of the flash tank is connected to a booster pump. The low-pressure flash steam generated in the flash tank is drawn away by the booster pump and mixed inside, improving the quality of the steam waste heat and supplying it for industrial gas or heating, thus improving the utilization rate of low-temperature waste heat (200-100 degrees Celsius). Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the condenser connection of this utility model; Figure 3 This is a schematic diagram of the condenser structure of this utility model; In the diagram: 1. Support frame; 2. Column; 3. Crossbeam 1; 4. Air intake hopper; 5. Generator box; 6. Condenser box; 7. Booster pump; 8. Pipe 1; 9. Pipe 2; 10. Platform; 11. Generator; 12. Shaft; 13. Condenser; 14. Condenser tube; 15. Crossbeam 2; 16. Fins; 17. Flash tank. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 3 This application provides a high-efficiency boiler steam waste heat recovery device, including a support frame 1, which is symmetrically arranged on both sides. A column 2 is arranged in the middle of the support frame 1. An air inlet hopper 4 is installed on the top left side of the column 2. The air inlet hopper 4 is fixedly connected to the column 2 and the support frame 1. A generator box 5 is installed on the top of the air inlet hopper 4. A rotating shaft 12 is rotatably connected inside the generator box 5. Steam flowing from bottom to top can rotate the rotating shaft 12. A condenser box 6 is installed on the top of the generator box 5. Multiple condensers 13 are installed inside the condenser box 6. A flash tank 17 is installed on the right side of the column 2. The flash tank 17 can generate steam. A booster pump 7 is installed on the top of the condenser box 6. The upper end of the booster pump 7 is connected to the flash tank 17. The booster pump 7 can mix the cooled steam and the steam in the flash tank 17 and pressurize and deliver the pressurized steam. The air inlet hopper 4, generator box 5, condenser box 6 and booster pump 7 are interconnected.

[0017] Based on the above, a stable support structure is constructed by support frame 1 and column 2. The components are connected in sequence to form a steam flow path. The steam passes through air inlet hopper 4, generator box 5, condenser box 6, and booster pump 7 in sequence to complete the cascade waste heat recovery process of kinetic energy recovery, heat exchange and cooling, and steam mixing and pressurization. Furthermore, the interconnection between components enables the full-chain utilization of steam energy, recovering waste heat step by step from high temperature to low temperature, thus solving the problem of low waste heat utilization rate in traditional devices.

[0018] Please see Figures 1 to 2 The outer surface of the rotating shaft 12 is equipped with an array of guide plates. A platform 10 is installed in the middle of the left inner side wall of the support frame 1. A generator 11 is installed on the upper surface of the platform 10. The output shaft of the generator 11 passes through the side wall of the generator box 5 and is fixedly connected to the axis of the rotating shaft 12.

[0019] Based on the above, the high-temperature and high-pressure steam impact array guide plate drives the rotating shaft 12 to rotate, converting the steam kinetic energy into mechanical energy, and the generator 11 then converts the mechanical energy into electrical energy, thus achieving efficient energy conversion. Furthermore, the arrangement of the guide vane array increases the steam contact area and improves the kinetic energy conversion efficiency. The generator 11 efficiently converts mechanical energy into electrical energy, and the platform ensures that the power generation process is continuous, stable and efficient.

[0020] Please see Figure 1 A crossbeam 3 is installed on the top right side of the column 2. The other end of the crossbeam 3 is fixedly connected to the inner wall of the right support frame 1. Multiple flash tanks 17 are installed on the upper surface of the crossbeam 3. A pipe 8 is installed on the upper end of the flash tank 17. The flash tank 17 is connected to the outlet of the condenser 13 through the pipe 8.

[0021] Based on the above, the crossbeam 3 provides stable support for the flash tank 17, and the hot water after absorbing heat in the condenser 13 is accurately transported to the corresponding flash tank 17 through the pipe 8 to provide a high-temperature water source for the flash process. Furthermore, the "one-to-one" pipe connection ensures precise hot water distribution, reduces heat loss during transportation, and the crossbeam 13 enhances the installation stability of the flash tank 17, ensuring safe operation of the flash process.

[0022] Please see Figure 1 The top of the flash tank 17 is equipped with a second pipe 9. The lower end of the second pipe 9 is connected to the flash tank 17 in a one-to-one correspondence, and the upper end of the pipe is connected to the booster pump 7.

[0023] Based on the above, the low-pressure steam generated by flash tank 17 is collected separately through pipeline 2 9 and then centrally transported to booster pump 7 for further processing. Furthermore, the staged connection reduces pressure loss during steam transportation, ensuring that low-pressure steam is efficiently collected and enters the booster pump 7, thereby improving the steam recovery and utilization rate.

[0024] Please see Figure 1 The flash tank 17 is equipped with a pipe three at its lower end, and the flash tanks 17 are connected in series through the pipe three.

[0025] Based on the above, the high-temperature water that has not been fully flashed flows into the next flash tank through the bottom pipe three, realizing the step-by-step extraction of waste heat from the hot water, maximizing the utilization of heat in the water, and finally supplying the hot water to the boiler through the pipe three, thereby reducing fuel costs. Furthermore, the series connection of flash tanks avoids the waste of waste heat caused by insufficient flashing in a single tank, significantly improves the recovery efficiency of low-temperature waste heat (200-100℃), and the final remaining hot water can be directly used as boiler feedwater, reducing fuel consumption.

[0026] Please see Figures 1 to 3The condenser 13 includes condenser tubes 14 and fins 16. The condenser tubes 14 are arranged in multiple layers from bottom to top in an S-shape, and fins 16 arranged in an array are installed on the outer surface of each layer of the condenser tubes 14. The fins 16 are cylindrical.

[0027] Based on the above, the S-type multilayer condenser tube 14 increases the contact area between the steam and the condenser tube 14, and the cylindrical fins 16 increase the heat exchange surface area, thereby enhancing the heat exchange efficiency between the steam and the cold water inside the condenser tube 14 and achieving efficient heat exchange for steam cooling and cold water heating. Furthermore, the condenser tube 14S type structure and fins 16 significantly improve heat exchange efficiency, ensuring that the heat of high-temperature steam is fully transferred to cold water, providing a sufficient heat source for subsequent flash evaporation, and solving the problem of poor low-temperature waste heat exchange effect in traditional devices.

[0028] Please see Figures 1 to 3 A second crossbeam 15 is horizontally installed in the middle of the bottom surface of the condenser tube 14, and the two ends of the second crossbeam 15 are fixedly connected to the inner side wall of the condenser box 6.

[0029] Based on the above, the second crossbeam 15 forms a bottom support for the multi-layer condenser tube 14 to prevent the condenser tube 14 from shifting or deforming due to its own weight or steam impact during the heat exchange process. Furthermore, the structural stability of the condenser tube 14 is enhanced to ensure structural safety during long-term heat exchange and extend the service life of the equipment.

[0030] Please see Figure 1 The air intake hopper 4 is cylindrical in the middle and funnel-shaped at the top and bottom.

[0031] Based on the above, the upper and lower ends of the funnel shape converge and guide the steam, while the middle section of the cylindrical shape stabilizes the steam flow rate, so that the steam flows into the generator box 5 in a concentrated and uniform manner from bottom to top. Furthermore, optimizing the steam flow path reduces energy loss caused by airflow turbulence, improves the steam's driving efficiency on the rotating shaft 12, and enhances the kinetic energy recovery effect.

[0032] In summary, this boiler steam waste heat recovery device, during operation, has a symmetrically arranged support frame 1 with a central column 2. An air inlet hopper 4 is installed on the left side of the column 2, and a generator box 5 is installed on top of the air inlet hopper 4. A rotating shaft 12 is rotatably connected inside the generator box 5, and an array of guide plates is installed on the surface of the shaft 12. High-temperature, high-pressure steam flows upwards, driving the shaft 12 to rotate, thereby generating electricity through a generator 11 connected to the shaft. The generator 11 converts the steam's kinetic energy into electrical energy, achieving efficient energy conversion. A condenser box 6 is installed on top of the generator box 5, and multiple condensers 13 are installed inside the condenser box 6 to exchange heat with the high-temperature steam. A crossbeam 3 is installed on the top right side of the column 2, and a flash tank 17 is installed on the upper surface of the crossbeam 3. The upper end of the flash tank 17 is equipped with... There is a pipe 8 connected to the outlet of the condenser 13. The condenser tube 14 in the condenser 13 carries the heat-exchanged hot water through the pipe 8 to the flash tank 17 for flash evaporation. The pressure inside the flash tank 17 is lower than the external atmospheric pressure. The hot water flowing into the flash tank 17 generates low-pressure steam. The hot water that is not flashed is retained in the tank. A booster pump 7 is installed on the top of the condenser 6. A pipe 9 is installed on the top of the flash tank 17. The top of the pipe 9 is connected to the booster pump 7. The booster pump 7 mixes the low-temperature steam condensed by the condenser 13 with the low-pressure steam generated by the flash tank 17 and pressurizes it. The pressurized steam with improved waste heat quality is then supplied to industrial gas or heating, improving the utilization rate of low-temperature waste heat steam. The hot water that is not flashed in the flash tank is supplied to the boiler water at any time, reducing fuel consumption.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency boiler steam waste heat recovery device, comprising a support frame (1), wherein the support frame (1) is symmetrically arranged on both sides, characterized in that... The support frame (1) has a column (2) in the middle, and an air inlet hopper (4) is installed on the top left side of the column (2). The air inlet hopper (4) is fixedly connected to the column (2) and the support frame (1). A generator box (5) is installed on the top of the air inlet hopper (4). A rotating shaft (12) is rotatably connected inside the generator box (5). Steam flowing from bottom to top can make the rotating shaft (12) rotate. A condenser box (6) is installed on the top of the generator box (5). Multiple condensers are installed inside the condenser box (6). The condenser (13) has a flash tank (17) installed on the right side of the column (2). The flash tank (17) can generate steam. The top of the condenser (6) is equipped with a booster pump (7). The upper end of the booster pump (7) is connected to the flash tank (17). The booster pump (7) can mix the cooled steam and the steam in the flash tank (17) and boost the pressurized steam. The air inlet hopper (4), the generator box (5), the condenser box (6), and the booster pump (7) are interconnected.

2. The boiler steam waste heat recovery device according to claim 1, characterized in that: The outer surface of the rotating shaft (12) is equipped with an array of guide plates. A platform (10) is installed in the middle of the left inner side wall of the support frame (1). A generator (11) is installed on the upper surface of the platform (10). The output shaft of the generator (11) passes through the side wall of the generator box (5) and is fixedly connected to the axis of the rotating shaft (12).

3. The boiler steam waste heat recovery device according to claim 2, characterized in that: A crossbeam (3) is installed on the top right side of the column (2). The other end of the crossbeam (3) is fixedly connected to the inner wall of the right support frame (1). Multiple flash tanks (17) are installed on the upper surface of the crossbeam (3). A pipe (8) is installed on the upper end of the flash tank (17). The flash tank (17) is connected to the outlet of the condenser (13) through the pipe (8).

4. The boiler steam waste heat recovery device according to claim 3, characterized in that: The top of the flash tank (17) is equipped with a second pipe (9), the lower end of the second pipe (9) is connected to the flash tank (17) in a one-to-one correspondence, and the upper end pipe is combined into one and connected to the booster pump (7).

5. The boiler steam waste heat recovery device according to claim 4, characterized in that: The flash tank (17) is equipped with a pipe three at its lower end, and the flash tanks (17) are connected in series through the pipe three.

6. The boiler steam waste heat recovery device according to claim 5, characterized in that: The condenser (13) includes a condenser tube (14) and fins (16). The condenser tube (14) is S-shaped and arranged in multiple layers from bottom to top. Each layer of the condenser tube (14) has an array of fins (16) arranged on its outer surface. The fins (16) are cylindrical.

7. The boiler steam waste heat recovery device according to claim 6, characterized in that: A second crossbeam (15) is horizontally installed in the middle of the bottom surface of the condenser tube (14), and the two ends of the second crossbeam (15) are fixedly connected to the inner wall of the condenser box (6).

8. The boiler steam waste heat recovery device according to claim 7, characterized in that: The air intake hopper (4) is cylindrical in the middle and funnel-shaped at the top and bottom.

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