Superheated steam desuperheating device

Abstract

This utility model provides a superheated steam desuperheating device, relating to the field of superheated steam desuperheating technology. It includes a desuperheating tank, with a first top cover bolted to the top. A variable frequency pump is mounted on the top of the first top cover, and a connecting pipe is fixed to the bottom of the variable frequency pump. A treatment tank is used to store soft water. The variable frequency pump draws soft water from the treatment tank, which is then atomized and sprayed through the connecting pipe and outlet pipe, spraying it onto the superheated steam entering the desuperheating tank to cool it down. This cooling method uses industrial soft water as the desuperheating medium, requiring only preheating the soft water to 80-100°C, utilizing waste heat from production, eliminating the need for additional fuel. Furthermore, when the atomized soft water mixes with the superheated steam, it directly absorbs the steam's heat and vaporizes, eliminating heat loss during medium transport and additional steam preparation losses, thus reducing system energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of superheated steam desuperheating technology, and in particular to a superheated steam desuperheating device. Background Technology

[0002] In industrial production, superheated steam is widely used for power output, material heating, and process reactions due to its high enthalpy and heat transfer efficiency. For example, thermal power plants generate high-temperature, high-pressure superheated steam in boilers to drive turbines and generate electricity, while chemical companies use superheated steam to provide the heat required for processes in reaction vessels. However, the temperature of superheated steam is usually much higher than the rated withstand temperature of subsequent steam-using equipment. If directly supplied to the steam-using end, the excessively high temperature can cause excessive thermal stress on the metal parts of the equipment, accelerating equipment aging and corrosion, and even leading to safety accidents such as pipeline rupture and seal failure. At the same time, temperature fluctuations can also affect process stability, such as causing incomplete material reactions and uneven product quality.

[0003] Currently, most existing superheated steam desuperheating devices employ hot steam mixing for desuperheating, which involves adding low-temperature saturated steam to the superheated steam to achieve cooling. However, this desuperheating method relies on additional steam preparation, resulting in significant energy waste, uneven mixing, delayed response, poor temperature control accuracy, and problems such as steam hammer and media waste. Consequently, it has significant limitations and poor practicality. Utility Model Content

[0004] The purpose of this invention is to address the limitations of existing heat steam mixing and desuperheating methods, which rely on additional steam preparation, resulting in significant energy waste, uneven mixing, delayed response, poor temperature control accuracy, steam hammer, media waste, and high maintenance costs. Therefore, this invention proposes a superheated steam desuperheating device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a superheated steam desuperheating device, comprising a desuperheating barrel, a first top cover bolted to the top of the desuperheating barrel, a variable frequency pump mounted on the top of the first top cover, a connecting pipe fixed to the bottom of the variable frequency pump, a water outlet pipe fixed to the bottom of the connecting pipe passing through the first top cover, a plurality of atomizing nozzles mounted on the bottom of the water outlet pipe, a processing box mounted on the top of the variable frequency pump, a filter frame provided inside the processing box, an air inlet pipe fixed to the outer wall of the desuperheating barrel, and an air outlet pipe fixed to the outer wall of the desuperheating barrel.

[0006] Preferably, the top of the processing box is threadedly connected to a second top cover, the bottom of the second top cover abuts against the top of the filter frame, a friction sleeve is fixed on the outer wall of the second top cover, and handle grooves are provided at both ends of the outer wall of the filter frame.

[0007] Preferably, a support block is fixed on the inner bottom wall of the cooling barrel, the filter frame is placed on the top of the support block, a water supply pipe is fixed on the top of the second top cover, and a first flange is fixed on the outer wall of the top of the water supply pipe.

[0008] Preferably, a support plate is fixed on the inner top wall of the first top cover, the water outlet pipe is fixed to the first top cover through the support plate, and a support column is fixed to the bottom end of the treatment tank, the bottom end of the support column is fixed to the first top cover.

[0009] Preferably, a second flange is fixed to the outer wall of both the inlet pipe and the outlet pipe at the end furthest from the desuperheating barrel.

[0010] Preferably, the bottom of the cooling barrel is fixed with a mounting plate, and mounting holes are provided at all four corners of the mounting plate.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, a treatment tank is used to store soft water. A variable frequency pump draws soft water from the tank, which is then atomized and sprayed through a connecting pipe and an outlet pipe. This spray cools the superheated steam entering the cooling tank. This cooling method uses industrial soft water as the cooling medium, requiring only preheating to 80-100°C, utilizing waste heat from production processes, eliminating the need for additional fuel. Furthermore, when the atomized soft water mixes with the superheated steam, it directly absorbs the steam's heat and vaporizes, eliminating heat loss during medium transport. The overall system energy consumption is reduced by 30%-50% compared to traditional solutions, with no additional steam preparation losses, further reducing system energy consumption. The atomizing nozzles atomize the soft water into 50-100μm droplets, achieving a contact area between the droplets and the superheated steam that is 100-200 mm larger than in traditional solutions. With a larger heat exchange area, faster response speed, and adaptability to a wide range of temperature regulation, this invention offers several advantages. In traditional hot steam desuperheating, excessive mixing of saturated steam can lead to excessive humidity (water content > 3%) in the desuperheated steam, requiring an additional steam-water separator and resulting in steam waste (waste rate of approximately 5%-8%). In this invention, the amount of soft water used is precisely calculated and controlled, and the atomized droplets can be 100% vaporized, leaving no excess water residue. This eliminates the need for steam-water separation equipment and avoids media waste. Attached Figure Description

[0012] Figure 1 A perspective view of the superheated steam desuperheating device is provided for this utility model; Figure 2 A cross-sectional view of the superheated steam desuperheating device proposed in this utility model; Figure 3 This utility model presents a schematic diagram of the external structure of the treatment tank of the superheated steam desuperheating device. Figure 4A cross-sectional view of the internal structure of the treatment box of the superheated steam desuperheating device proposed in this utility model.

[0013] Legend: 1. Cooling tank; 2. First top cover; 3. Bolt; 4. Treatment box; 5. Variable frequency pump; 6. Connecting pipe; 7. Water outlet pipe; 8. Atomizing nozzle; 9. Support plate; 10. Support column; 11. Second top cover; 12. Wiping sleeve; 13. Water supply pipe; 14. First flange; 15. Filter frame; 16. Support block; 17. Handle groove; 18. Air inlet pipe; 19. Air outlet pipe; 20. Second flange; 21. Mounting plate; 22. Mounting hole. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Example 1, such as Figure 1-4 As shown, this utility model provides a superheated steam desuperheating device, including a desuperheating tank 1. A first top cover 2 is installed on the top of the desuperheating tank 1 by bolts 3. A variable frequency pump 5 is installed on the top of the first top cover 2. A connecting pipe 6 is fixed to the bottom of the variable frequency pump 5. The bottom of the connecting pipe 6 passes through the first top cover 2 and is fixed with a water outlet pipe 7. Multiple atomizing nozzles 8 are installed at the bottom of the water outlet pipe 7. A processing box 4 is installed on the top of the variable frequency pump 5. A filter frame 15 is provided inside the processing box 4. An air inlet pipe 18 is fixed on the outer wall of the desuperheating tank 1. An air outlet pipe 19 is fixed on the outer wall of the desuperheating tank 1.

[0017] The overall effect of Embodiment 1 is as follows: The treatment tank 4 stores soft water. The variable frequency pump 5 draws soft water from the treatment tank 4, which is then atomized and sprayed through the connecting pipe 6 and the outlet pipe 7. This spray cools the superheated steam entering the cooling tank 1. This cooling method uses industrial soft water as the cooling medium, requiring only preheating the soft water to 80-100°C, utilizing waste heat from production, without the need for additional fuel. Furthermore, when the atomized soft water mixes with the superheated steam… It directly absorbs the heat of steam for vaporization, without heat loss during the medium transmission process. The overall system energy consumption is reduced by 30%-50% compared with the traditional solution. There is no additional steam preparation loss, which reduces the system energy consumption. Superheated steam enters through the air inlet pipe 18 and saturated steam is discharged through the air outlet pipe 19. Although the soft water has removed calcium, magnesium ions and other components that are prone to scaling, small impurities may still be mixed in during the preparation, storage and transportation process. The filter frame 15 can further filter the soft water drawn by the frequency converter pump 5 to prevent it from clogging the atomizing nozzle 8.

[0018] Example 2, as Figure 1-4 As shown, the top of the treatment box 4 is threadedly connected to a second top cover 11. The bottom of the second top cover 11 abuts against the top of the filter frame 15. A friction sleeve 12 is fixed on the outer wall of the second top cover 11. Handle grooves 17 are provided at both ends of the outer wall of the filter frame 15. A support block 16 is fixed on the inner bottom wall of the desuperheating barrel 1. The filter frame 15 is placed on the top of the support block 16. A water supply pipe 13 is fixed on the top of the second top cover 11. A first flange 14 is fixed on the outer wall of the top of the water supply pipe 13. A support plate 9 is fixed on the inner top wall of the first top cover 2. The water outlet pipe 7 is fixed to the first top cover 2 through the support plate 9. A support column 10 is fixed on the bottom of the treatment box 4. The bottom of the support column 10 is fixed to the first top cover 2. A second flange 20 is fixed on the outer wall of the end of the air inlet pipe 18 and the air outlet pipe 19 away from the desuperheating barrel 1. An installation plate 21 is fixed on the bottom of the desuperheating barrel 1. Installation holes 22 are provided at the four corners of the installation plate 21.

[0019] The overall effect of Embodiment 2 is as follows: through the cooperation of the second top cover 11 and the support block 16, the filter frame 15 can be snapped into the processing box 4; the water supply pipe 13 is used to supply water to the processing box 4; the first flange 14 is used to facilitate connection to the external automatic water supply pipe; the second flange 20 is used to facilitate connection of the air inlet pipe 18 and the air outlet pipe 19 to the external pipe; the mounting plate 21 and the mounting hole 22 are used to facilitate the overall installation of the cooling tank 1; and the friction sleeve 12 is used to increase the friction force when the user rotates the second top cover 11, thus preventing slippage.

[0020] Working Principle: In operation, the device uses a treatment tank 4 to store soft water. A variable frequency pump 5 draws soft water from the treatment tank 4, which then flows through a connecting pipe 6 and an outlet pipe 7. The water is then atomized and sprayed out through atomizing nozzles 8 to cool the superheated steam entering the cooling tank 1. This cooling method uses industrial soft water as the cooling medium, requiring only preheating to 80-100℃, utilizing waste heat from production processes, eliminating the need for additional fuel. Furthermore, when the atomized soft water mixes with the superheated steam… It directly absorbs the heat of steam for vaporization, eliminating heat loss during medium transmission. The overall system energy consumption is reduced by 30%-50% compared to traditional solutions. There is no additional steam preparation loss, reducing system energy consumption. Superheated steam enters through the inlet pipe 18 and saturated steam is discharged through the outlet pipe 19. Although soft water has removed calcium, magnesium ions and other easily scale-forming components, it may still be mixed with tiny impurities during preparation, storage and transportation. The filter frame 15 can further filter the soft water drawn by the frequency converter pump 5 to prevent it from clogging the atomizing nozzle 8.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. Desuperheating device of superheated steam, comprising a desuperheating bucket (1), characterized in that: The top of the cooling barrel (1) is fitted with a first top cover (2) by bolts (3). A variable frequency pump (5) is installed on the top of the first top cover (2). A connecting pipe (6) is fixed at the bottom of the variable frequency pump (5). The bottom of the connecting pipe (6) passes through the first top cover (2) and is fixed with a water outlet pipe (7). Multiple atomizing nozzles (8) are installed at the bottom of the water outlet pipe (7). A processing box (4) is installed on the top of the variable frequency pump (5). A filter frame (15) is provided inside the processing box (4). An air inlet pipe (18) is fixed on the outer wall of the cooling barrel (1). An air outlet pipe (19) is fixed on the outer wall of the cooling barrel (1).

2. The superheated steam desuperheating device according to claim 1, characterized in that: The top of the processing box (4) is threadedly connected to a second top cover (11), the bottom of the second top cover (11) abuts against the top of the filter frame (15), and a friction sleeve (12) is fixed on the outer wall of the second top cover (11). Handle grooves (17) are provided at both ends of the outer wall of the filter frame (15).

3. The superheated steam desuperheating device according to claim 2, characterized in that: A support block (16) is fixed on the inner bottom wall of the cooling barrel (1), the filter frame (15) is placed on the top of the support block (16), a water supply pipe (13) is fixed on the top of the second top cover (11), and a first flange (14) is fixed on the outer wall of the top of the water supply pipe (13).

4. The superheated steam desuperheating device of claim 1, wherein: A support plate (9) is fixed on the inner top wall of the first top cover (2). The water outlet pipe (7) is fixed to the first top cover (2) through the support plate (9). A support column (10) is fixed at the bottom of the treatment box (4). The bottom of the support column (10) is fixed to the first top cover (2).

5. The superheated steam desuperheating device according to claim 1, characterized in that: The outer wall of the inlet pipe (18) and outlet pipe (19) away from the desuperheating barrel (1) is fixed with a second flange (20).

6. The superheated steam desuperheating device of claim 1, wherein: The bottom of the cooling barrel (1) is fixed with an installation plate (21), and the four corners of the installation plate (21) are provided with installation holes (22).

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