Steam comprehensive utilization full-contact temperature reducer

Abstract

This invention belongs to the field of heat exchange technology, specifically relating to a steam comprehensive utilization all-contact desuperheater, including a desuperheater body, a water inlet pipe, a drain port, desuperheater inlet and outlet, and a desuperheating atomization unit. The desuperheater body contains a buffer impeller, a baffle plate, and a protective chamber. The desuperheating atomization unit includes a mounting frame, a recessed splash guard, a perforated plate, and a reaction ring. After being buffered by the buffer impeller, the superheated steam directly contacts the uniform water film on the surface of the reaction ring along the opening direction of the protective chamber for heat exchange, resulting in complete vaporization of the desuperheating water. The steam is discharged after water droplets are separated by the baffle plate, and the condensate is collected and discharged from the desuperheater outlet for subsequent treatment. This invention improves heat exchange efficiency through uniform water flow distribution, and the modular design of the desuperheating atomization unit facilitates maintenance.

Description

Technical Field

[0001] This invention belongs to the field of heat exchange technology, specifically relating to a steam comprehensive utilization full-contact desuperheater. Background Technology

[0002] Desuperheaters typically employ nozzle-type or venturi-type desuperheaters. These desuperheaters rely on atomizing the desuperheating water to achieve steam desuperheating, but this method has limited heat exchange efficiency and low desuperheating precision.

[0003] The full-contact desuperheater achieves efficient heat exchange by forcing superheating, allowing steam to fully contact the moist reaction ring inside the device, thus greatly improving the desuperheating efficiency. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the prior art, the present invention provides a steam comprehensive utilization full-contact desuperheater to solve the problems in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A steam comprehensive utilization full-contact desuperheater includes a desuperheater body, a water inlet pipe connected to the top of the desuperheater body, a drain outlet connected to the bottom of the desuperheater body, a desuperheater inlet connected to one side of the desuperheater body, and a desuperheater outlet connected to the corresponding other side. The main body of the desuperheater has a cavity structure. A buffer impeller is provided at one end near the desuperheater inlet, and a baffle plate is provided at one end near the desuperheater outlet. A desuperheating atomizing unit is placed in the middle, and a protective chamber is also provided inside the desuperheater main body to surround the desuperheating atomizing unit. The cooling atomization unit includes a mounting frame, a splash guard mounted on top of the mounting frame, a perforated plate located below the splash guard, and a reaction ring mounted on the mounting frame.

[0006] Furthermore, the end of the water inlet pipe near the desuperheater body is threadedly connected to the first connecting part that is fixedly connected to the top of the desuperheater body.

[0007] Furthermore, the upper end of the mounting bracket extends to the first connecting part and is provided with a second connecting part that abuts against the first connecting part. The second connecting part is connected to the base plate through a connecting rod, and the base plate is placed above the drain outlet.

[0008] Furthermore, the splash guard is designed with a concave platform; the porous plate has multiple vertical through holes in the middle, and the upper end of the porous plate corresponds to the concave part of the splash guard, and the lower end corresponds to the top of the reaction ring.

[0009] Furthermore, the reaction ring includes multiple vapor contact portions, and a hemispherical first protrusion is fixedly mounted on the top of the multiple vapor contact portions, with its bottom mounted on the base plate.

[0010] Furthermore, the two ends of the buffer impeller are mounted inside the desuperheater body via mounting blocks.

[0011] Furthermore, the water deflector plate includes two pieces: the top of the piece closer to the cooling atomization unit is fixed to the cooling device body, and the bottom of the piece farther away from the cooling atomization unit is fixed to the cooling device body; and the surface of the water deflector plate closer to the cooling atomization unit is provided with evenly distributed second protrusions.

[0012] Furthermore, the protective chamber is cylindrical, with both ends fixed inside the desuperheater body, and its side walls have spiral openings.

[0013] Furthermore, a drain valve is provided at the bottom of the drain outlet.

[0014] Furthermore, flange connections are provided at the ends of the desuperheater inlet and outlet that are furthest from the desuperheater body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The reaction of the full-contact desuperheater is concentrated within the desuperheater body, which can achieve efficient recovery of condensate and other substances. At the same time, all components of the desuperheating atomization unit are integrated into the mounting frame, forming a modular structure that facilitates overall disassembly and maintenance.

[0016] 2. The splash plate allows cooling water to be concentrated and flow into the perforated plate. After the cooling medium is refined into a uniform and fine water flow by the perforated plate, it can stably form a continuous water film on the surface of the reaction ring. Combined with the spiral opening of the protective chamber to guide the steam and water film to fully contact, and the design of the rod-shaped staggered structure of the reaction ring and the first protrusion to increase the contact area, it can achieve efficient direct heat exchange between superheated steam and cooling water. The cooling water can fully absorb heat and vaporize, and finally cool the superheated steam into saturated steam.

[0017] 3. The buffer impeller at the inlet of the desuperheater can guide and buffer the superheated steam, preventing the steam from directly impacting subsequent components and causing wear or uneven heat exchange; the double staggered baffles and the second protrusion on the surface at the outlet can effectively collide and separate the tiny water droplets remaining in the steam, improving the dryness of the steam; the bottom drain port is equipped with a float-type drain valve, which can automatically discharge condensate and prevent condensate from accumulating and causing water hammer impact. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a steam comprehensive utilization full-contact desuperheater according to the present invention; Figure 2 This is a cross-sectional structural schematic diagram of a steam comprehensive utilization full-contact desuperheater according to the present invention (viewpoint 1). Figure 3 This is a cross-sectional structural schematic diagram of a steam comprehensive utilization full-contact desuperheater of the present invention (viewpoint 2). Figure 4 This is a three-dimensional structural diagram of the cooling atomization unit of the present invention; Figure 5 This is a three-dimensional structural diagram of the mounting bracket of the present invention; The reference numerals in the accompanying drawings include: 1. Water inlet pipe; 2. Desuperheater inlet; 3. Desuperheater outlet; 4. Drain outlet; 41. Drain valve; 5. Flange connection; 6. Desuperheater body; 61. Mounting block; 62. Buffer impeller; 63. Protective chamber; 64. First connection; 7. Desuperheating atomization unit; 71. Splash baffle; 72. Mounting bracket; 721. Second connection; 722. Base plate; 723. Connecting rod; 73. Perforated plate; 74. Reaction ring; 741. First protrusion; 742. Steam contact part; 8. Water deflector; 81. Second protrusion. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0021] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; 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 refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1: like Figure 1-5 As shown, the present invention discloses a steam comprehensive utilization full-contact desuperheater, including a desuperheater body 6, a water inlet pipe 1 connected to the top of the desuperheater body 6, a drain outlet 4 connected to the bottom of the desuperheater body 6, a desuperheater inlet 2 connected to one side of the desuperheater body 6, and a desuperheater outlet 3 connected to the corresponding other side.

[0024] Specifically, such as Figure 2 , Figure 3 As shown, the desuperheater body 6 has a cavity structure, with the diameters at both ends being smaller than those in the middle. Superheated steam enters the middle of the desuperheater body 6 through the small diameter inlet 2, allowing the steam to diffuse fully, and exits through the small diameter outlet 3, allowing residual water droplets to be recovered.

[0025] Furthermore, a desuperheating atomization unit 7 is placed inside the desuperheater body 6. At the same time, a buffer impeller 62 is provided at one end of the desuperheater body 6 near the desuperheater inlet 2. The two ends of the buffer impeller 62 are installed inside the desuperheater body 6 via mounting blocks 61. The mounting blocks 61 can stably fix the buffer impeller 62. The blades of the buffer impeller 62 are rotatably connected to the rod. The superheated steam entering from the desuperheater inlet 2 impacts the blades of the buffer impeller 62, causing the buffer impeller 62 to rotate. This can guide and buffer the steam, making the steam flow rate uniformly distributed and avoiding the steam directly impacting subsequent components, causing local wear or uneven heat exchange. As a preferred embodiment, the buffer impeller 62 can be connected to the power generation component to fully collect the potential energy generated by the impact of the buffer impeller 62. A deflector plate 8 is provided at one end of the desuperheater body 6 near the desuperheater outlet 3. The deflector plate 8 consists of two plates. The top of the plate near the desuperheating atomization unit 7 is fixed to the desuperheater body 6, and the bottom of the plate away from the desuperheating atomization unit 7 is fixed to the desuperheater body 6. The ends of both deflector plates 8 away from the desuperheater body 6 extend beyond the central axis of the desuperheater outlet 3, so that steam must come into contact with the deflector plate 8 before it can be discharged. The staggered distribution of the deflector plates 8 allows residual water carried in the saturated steam to be intercepted and collected at the bottom of the desuperheater body 6. A second protrusion 81 is also provided on the side of the deflector plate 8 near the desuperheating atomization unit 7. The second protrusion 81 can further agitate the steam flow and make full contact with the steam, so that the tiny water droplets carried in the steam can be separated by collision, thereby improving the dryness of the steam.

[0026] In this embodiment, as Figure 2 , Figure 3As shown, the desuperheater body 6 is also provided with a protective chamber 63 surrounding the desuperheating atomizing unit 7. The two ends of the protective chamber 63 are fixed inside the desuperheater body 6. Its main body is cylindrical and has a spiral opening on the side wall. The spiral opening can guide the steam entering from the desuperheater inlet 2 to spirally flow into the desuperheating atomizing unit 7 area along the outer wall of the protective chamber 63 and fully contact the desuperheating atomizing unit 7 to improve the heat exchange efficiency.

[0027] like Figure 4 As shown, in this embodiment, the de-icing atomizing unit 7 includes a mounting frame 72, a splash guard 71, a perforated plate 73, and a reaction ring 74. The splash guard 71 is mounted on top of the mounting frame 72, the perforated plate 73 is located below the splash guard 71 and mounted on the mounting frame 72, and the reaction ring 74 is also mounted on the mounting frame 72. The upper end of the mounting frame 72 extends to the first connecting portion 64, which is integrally formed with the top of the de-icing body 6. The upper end of the mounting frame 72 is provided with a second connecting portion 721, which abuts against the first connecting portion 64, specifically as follows... Figure 3 , Figure 5 As shown, the second connecting part 721 is a protruding annular connecting part with a diameter larger than that of the first connecting part 64, allowing it to be placed directly on the first connecting part 64. Since the splash plate 71 is also placed on top of the mounting bracket 72, i.e. above the second connecting part 721, when the cooling medium (water) flows in from the inlet pipe 1, the impact of the water makes the connection between the first connecting part 64 and the second connecting part 721 more stable. The bottom of the second connecting part 721 is also provided with a connecting rod 723 connected to the base plate 722. The base plate 722 is placed above the drain port 4. The base plate 722 can both support the reaction ring 74 and other components and guide the condensate to collect in the drain port 4 for subsequent discharge.

[0028] Furthermore, the splash plate 71 has a concave platform design. This structure can receive the water flow from the inlet pipe 1 and concentrate the water flow in the middle before flowing into the perforated plate 73. The perforated plate 73 has multiple vertical through holes in the middle. The upper end of the perforated plate 73 corresponds to the concave part of the splash plate 71, and the lower end corresponds to the top of the reaction ring 74. After the water flow is dispersed by the splash plate 71, it will enter the through holes of the perforated plate 73 and be refined into a fine water flow. Then it will flow precisely to the top of the reaction ring 74, providing a uniform water flow basis for the formation of a water film on the surface of the reaction ring 74.

[0029] The reaction ring 74 includes multiple steam contact portions 742, which can be arranged in a staggered, rod-like pattern. The surfaces of these portions can be raised to ensure sufficient contact between the water film and the high-temperature steam. This staggered structure increases the contact area with the water flow and steam. A hemispherical first protrusion 741 is fixedly installed on the top of each of the multiple steam contact portions 742. After the water flows out from the perforated plate 73, it flows along the surface of the rod-shaped steam contact portions 742 and spreads under the guidance of the first protrusion 741, ultimately forming a continuous water film on the surfaces of the steam contact portions 742 and the first protrusion 741. This water film directly contacts the steam for heat exchange, allowing the cooling water to fully absorb heat and vaporize, completely recovering the heat from the cooling water into the steam, avoiding energy waste and achieving efficient energy utilization. The bottom of the reaction ring 74 is mounted on a base plate 722, ensuring structural stability.

[0030] In this embodiment, the water inlet pipe 1 and the first connecting part 64 are threaded together. The diameter of the bottom of the water inlet pipe 1 is larger than that of the first connecting part 64, which protects the first connecting part 64 and the cooling atomizing unit 7. Furthermore, when it is necessary to replace or inspect the cooling atomizing unit 7, it is only necessary to remove the water inlet pipe 1 and take out the mounting bracket 72.

[0031] A steam trap 41 is provided at the bottom of the steam drain 4. The steam trap 41 can be a float-type steam trap. When the condensate accumulates to a certain level, the float rises and discharges the condensate, ensuring the drying quality of the steam. The residual condensate and the condensate generated during shutdown are discharged from the steam trap 41 and can be further fed back into the water inlet pipe 1 or treated in other ways as needed.

[0032] The desuperheater inlet 2 and the desuperheater outlet 3 are provided with flange connection parts 5 at the ends away from the desuperheater body 6. The flange connection parts 5 can facilitate the sealing connection between the desuperheater and the external steam pipeline, improving the convenience of installation and disassembly.

[0033] The desuperheater operates as follows: High-temperature superheated steam enters from the desuperheater inlet 2, is buffered by the buffer impeller 62, and flows into the desuperheating atomization unit 7 area through the spiral opening of the protective chamber 63; at the same time, the water flow from the water inlet pipe 1 is refined by the splash plate 71 and the perforated plate 73, forming a uniform water film on the surface of the reaction ring 74. The steam directly contacts the reaction ring, which is moistened by the water film, to exchange heat, efficiently absorbing heat and causing the desuperheating water adhering to the surface of the reaction ring to vaporize instantly, eventually transforming into saturated steam at the set temperature; subsequently, the saturated steam is separated from the residual water droplets by the baffle plate 8 and discharged from the desuperheater outlet 3. The condensate is collected at the drain port 4 by its own gravity and discharged by the drain valve 41, ultimately achieving the desuperheating and comprehensive utilization of the superheated steam.

[0034] This invention's fully-contact desuperheater has an extremely wide range of applications and is suitable for various complex working environments, especially for situations with large fluctuations in steam consumption. It can achieve precise temperature regulation even with large pipe diameters, small flow rates, and low flow velocities, and its desuperheating effect is superior to other types of desuperheaters. Furthermore, this desuperheater has an optimized design and lower installation space requirements; the straight pipe section length after the desuperheater is only ≥1.6 meters, significantly lower than the 7 to 13 meters required by other types of desuperheaters.

[0035] In addition, this desuperheater is energy-saving and highly efficient. The desuperheating water in the full-contact desuperheater is completely vaporized into steam inside the equipment, achieving precise control of the desuperheating water volume. This effectively avoids the problem of other types of desuperheaters where, when the steam flow rate and velocity fluctuate greatly, a large amount of desuperheating water is injected but cannot be fully atomized, causing water droplets to settle at the bottom of the pipe and be discharged through the drain valve, resulting in a great waste of water resources.

[0036] The above are merely embodiments of the present invention. Commonly known structures and characteristics of the solutions are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A steam comprehensive utilization full-contact desuperheater, characterized in that: It includes a desuperheater body (6), a water inlet pipe (1) connected to the top of the desuperheater body (6), a drain outlet (4) connected to the bottom, a desuperheater inlet (2) connected to one side of the desuperheater body (6), and a desuperheater outlet (3) connected to the other side. The main body (6) of the desuperheater is a cavity structure. A buffer impeller (62) is provided at one end near the desuperheater inlet (2), and a baffle plate (8) is provided at one end near the desuperheater outlet (3). A desuperheating atomizing unit (7) is placed in the middle, and a protective chamber (63) is provided inside the desuperheater main body (6) surrounding the desuperheating atomizing unit (7). The cooling atomization unit (7) includes a mounting frame (72), a splash plate (71) mounted on top of the mounting frame (72), a perforated plate (73) located below the splash plate (71), and a reaction ring (74) mounted on the mounting frame (72).

2. The steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The end of the water inlet pipe (1) near the desuperheater body (6) is threadedly connected to the first connecting part (64) that is fixedly connected to the top of the desuperheater body (6).

3. The steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The upper end of the mounting bracket (72) extends to the first connecting part (64) and is provided with a second connecting part (721) that abuts against the first connecting part (64). The second connecting part (721) is connected to the base plate (722) through a connecting rod (723). The base plate (722) is placed on the upper end of the drain outlet (4).

4. The steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The splash plate (71) has a concave design; the porous plate (73) has multiple vertical through holes in the middle, and the upper end of the porous plate (73) corresponds to the concave part of the splash plate (71), and the lower end corresponds to the top of the reaction ring (74).

5. A steam comprehensive utilization full-contact desuperheater as described in claim 3, characterized in that: The reaction ring (74) includes multiple steam contact portions (742), and a hemispherical first protrusion (741) is fixedly installed on the top of the multiple steam contact portions (742), and its bottom is installed on the base plate (722).

6. The steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The two ends of the buffer impeller (62) are installed inside the desuperheater body (6) via mounting blocks (61).

7. The steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The water deflector plate (8) includes two pieces. The top of one piece, which is close to the cooling atomizing unit (7), is fixed on the body of the cooling device (6), and the bottom of the other piece, which is away from the cooling atomizing unit (7), is fixed on the body of the cooling device (6). The water deflector plate (8) has a second protrusion (81) evenly distributed on the side of the water deflector plate (8) that is close to the cooling atomizing unit (7).

8. A steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The protective chamber (63) is cylindrical, with both ends fixed inside the desuperheater body (6), and its side walls are provided with spiral openings.

9. A steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The bottom of the drain outlet (4) is provided with a drain valve (41).

10. A steam comprehensive utilization full-contact desuperheater as described in claim 1, characterized in that: The desuperheater inlet (2) and desuperheater outlet (3) are provided with flange connection (5) at the end away from the desuperheater body (6).

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