A spray device for a superheated steam saturator

Abstract

The application relates to a spraying device of a superheated steam saturator, belonging to the technical field of superheated steam saturators, comprising a superheated steam pipe, a spraying structure arranged in the superheated steam pipe, the spraying structure comprising a spraying main pipe, a spraying ring pipe and spraying heads, the spraying main pipe being fixedly connected to the superheated steam pipe, one end of the spraying main pipe penetrating through the superheated steam pipe and being connected to a water source, the spraying ring pipe being fixedly connected to the spraying main pipe, the spraying ring pipe being connected to the inner wall of the superheated steam pipe, the spraying heads being circumferentially arranged and connected to the spraying ring pipe, and the spraying heads being inclinedly arranged towards each other. The application has the effect of improving the spraying dispersivity of the spraying device of the superheated steam saturator.

Description

Technical Field

[0001] This application relates to the field of superheated steam saturators, and more particularly to a spray device for a superheated steam saturator. Background Technology

[0002] Currently, with increasingly stringent national energy and environmental protection policies, thermal power plants and centralized heating have become the future development direction for steam supply in factories and districts. Generally, steam-using equipment in manufacturing processes requires saturated steam, while heating centers typically provide high-temperature, high-pressure superheated steam.

[0003] Steam becomes superheated steam when its temperature exceeds its saturation temperature at the corresponding pressure. For example, at a pressure of 0.8 MPa, the saturation temperature of steam is 174°C. If the steam temperature exceeds 174°C at this pressure, it is considered superheated steam. Although superheated steam has a higher enthalpy than saturated steam, it is not suitable for process heat exchange. This is because the superheated enthalpy of superheated steam is very small, far lower than the latent heat of vaporization released when the same mass of saturated steam condenses. Therefore, in industrial production, superheated steam is often converted into saturated steam for use.

[0004] The most common type of superheated steam saturator currently is one in which superheated steam enters the superheated steam pipe after being depressurized. A spray head is installed inside the superheated steam pipe to atomize cooling water and spray it into the superheated steam pipe to mix with the superheated steam. The water mist is heated and vaporizes rapidly, while the superheated steam is cooled down. The two mix to form the required saturated steam.

[0005] Regarding the aforementioned technologies, the inventors believe that when superheated steam is saturated in a superheated steam saturator, the atomization and dispersion effect of the cooling water is an important factor affecting the conversion of superheated steam into saturated steam. If the cooling water fails to evaporate quickly, it is easy to condense into water droplets and drip into the superheated steam pipe. There is still room for improvement in the spray dispersion effect of the spray device of the superheated steam saturator. Utility Model Content

[0006] In order to improve the problem of poor spray dispersion effect of spray devices in general superheated steam saturators, this application provides a spray device for superheated steam saturators.

[0007] The spray device for a superheated steam saturator provided in this application adopts the following technical solution:

[0008] A spray device for a superheated steam saturator includes a superheated steam pipe with a spray structure inside. The spray structure includes a main spray pipe, a spray ring pipe, and spray heads. The main spray pipe is fixedly connected to the superheated steam pipe, with one end penetrating the superheated steam pipe and connected to a water source. The spray ring pipe is fixedly connected to the main spray pipe and connected to the inner wall of the superheated steam pipe. Multiple spray heads are arranged circumferentially and connected to the spray ring pipe, with the multiple spray heads inclined towards each other.

[0009] By adopting the above technical solution, cooling water is transported to the spray ring pipe through the spray manifold and sprayed out through multiple spray heads. By increasing the number of spray heads, the dispersion effect of the sprayed water mist can be greatly increased. In addition, since the spray heads are tilted towards each other, the water mist sprayed from multiple spray heads moves in the same direction, which greatly reduces the probability of water mist directly contacting and condensing on the inner wall of the superheated steam pipe, and correspondingly increases the probability of water mist contacting superheated steam.

[0010] Optionally, the superheated steam pipe is further provided with a turbulence structure, which includes an installation ring and turbulence blades. The installation ring is rotatably connected to the inner wall of the superheated steam pipe. The installation ring and the spray ring pipe are arranged sequentially along the superheated steam conveying direction. There are multiple turbulence blades arranged circumferentially and connected to the inner wall of the installation ring.

[0011] By adopting the above technical solution, a turbulence structure is set in front of the spray ring pipe. During the superheated steam transportation process, the turbulence blades will drive the mounting ring to rotate, and the rotation of the turbulence blades will also create turbulence in the superheated steam. The superheated steam, after being turbulent by the turbulence blades, immediately mixes with the sprayed water mist, which can form turbulence between superheated steam and water mist, greatly improving the dispersion effect of water mist in superheated steam.

[0012] Optionally, the thickness of the mounting ring on the side closer to the spray ring tube is greater than the thickness of the mounting ring on the side farther from the spray ring tube.

[0013] By adopting the above technical solution, the rapidly transported airflow easily forms a backflow zone behind the obstacle when it encounters an obstacle. That is, a backflow zone easily forms in the area behind the spray ring pipe, and the water mist in the backflow zone is very likely to drip off in the form of water droplets. In addition, setting the mounting ring to an inclined shape can, to a certain extent, guide the superheated steam near the superheated steam pipe wall, and make the superheated steam near the superheated steam pipe wall form a more uniform turbulence with the disturbed superheated steam, thereby reducing the possibility of a backflow zone forming behind the spray pipe.

[0014] Optionally, the turbulence structure further includes turbulence rings, wherein there are multiple turbulence rings, all of which are fixedly connected to the inner wall of the mounting ring, and the multiple turbulence rings are arranged at intervals along the superheated steam conveying direction.

[0015] By adopting the above technical solution, multiple turbulence ring protrusions are set on the inner wall of the mounting ring. These turbulence ring protrusions can greatly improve the turbulence effect of superheated steam near the pipe wall of the superheated steam pipe.

[0016] Optionally, the turbulence blade is provided with a turbulence structure, the turbulence structure including a turbulence conduit, there are multiple turbulence conduits, and the multiple turbulence conduits are fixedly connected to the side wall of the turbulence blade away from the spray ring pipe. The turbulence conduit is arranged along the width direction of the turbulence blade, and a first turbulence hole is opened on the turbulence conduit.

[0017] By adopting the above technical solution, an additional turbulence conduit is set on the turbulence blades, and a first turbulence orifice is opened on the turbulence conduit. The turbulence conduit and the first turbulence orifice work together to guide and disperse the superheated steam at the turbulence blades into multiple streams. Some of the superheated steam passes through the middle of the multiple turbulence blades. The multiple streams of superheated steam that are turbulent and dispersed by the turbulence blades and the superheated steam passing through the middle of the turbulence blades will collide during the transportation process, thereby improving the turbulence effect and allowing the superheated steam to mix better with the water mist.

[0018] Optionally, the turbulence-causing blades inside the turbulence-causing conduit are provided with a second turbulence-causing hole, and the first turbulence-causing hole and the second turbulence-causing hole are arranged at intervals.

[0019] By adopting the above technical solution, a second turbulence orifice is additionally opened on the turbulence-dispersing blades inside the turbulence-dispersing duct. A stream of superheated steam from the turbulence-dispersing blades will pass through the second turbulence orifice, further dispersing the superheated steam and enhancing its turbulence effect. Furthermore, specifically, the superheated steam passing through the second turbulence orifice can impact the turbulent superheated steam, thereby further improving the turbulence effect.

[0020] Optionally, the turbulent structure further includes a drainage tube, wherein there are multiple drainage tubes and all are fixedly connected to the inner wall of the turbulent conduit. The drainage tube is located between two adjacent first turbulent holes, and the cross-sectional area of ​​the drainage tube near the spray ring tube is smaller than the cross-sectional area of ​​the drainage tube away from the spray ring tube.

[0021] By adopting the above technical solution, the diversion pipe can guide some of the superheated steam in the turbulent duct to be sprayed at an inclined angle. This portion of the inclined superheated steam can impact the superheated steam between multiple turbulence blades, thereby improving the turbulence effect.

[0022] Optionally, the turbulence structure further includes a flow guide hood, which is fixedly connected to the end of the turbulence conduit away from the spray ring pipe, and the flow guide hood is connected to the turbulence conduit.

[0023] By adopting the above technical solution, the diversion hood can guide more superheated steam into the turbulent flow duct. After the superheated steam in the turbulent flow duct is compressed, the flow velocity becomes faster. Therefore, the superheated steam ejected from the first turbulent flow hole, the second turbulent flow hole, the diversion pipe, or directly from the turbulent flow duct has a greater impact force, thereby improving the turbulence effect.

[0024] Optionally, the mounting ring is further provided with a protective plate circumferentially, the protective plate being bent and extended toward the spray ring tube, and the spray ring tube being located within the cavity formed by the protective plate.

[0025] By adopting the above technical solution, the liner that bends and extends to cover the spray ring pipe can further reduce the possibility of a backflow area behind the spray ring pipe.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By installing a spray ring pipe inside the superheated steam pipe and connecting multiple spray heads circumferentially to the spray ring pipe, the dispersion of the water mist sprayed by the cooling water can be greatly improved, and the contact efficiency between the water mist of the cooling water and the superheated steam can be improved.

[0028] 2. By setting up a turbulence structure inside the superheated steam pipe, the superheated steam during the transportation process is disturbed, thereby forming turbulence through the superheated steam to improve the dispersion effect of water mist in the superheated steam.

[0029] 3. By setting turbulence structures on the baffle blades, the superheated steam can be further guided and dispersed. The collision of multiple streams of superheated steam forms a more uniform turbulence, thereby further improving the dispersion effect of water mist in superheated steam. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application, and the superheated steam pipe in the figure is a partial cross-sectional view to show the turbulent structure and flow structure inside the superheated steam pipe.

[0031] Figure 2 This is a cross-sectional view of the superheated steam pipe in an embodiment of this application, used to specifically illustrate the turbulence structure and the flow disturbance structure.

[0032] Figure 3 This is a cross-sectional view of the turbulence blades in an embodiment of this application, used to specifically illustrate the turbulence structure.

[0033] Explanation of reference numerals in the attached drawings: 100, superheated steam pipe; 200, spray structure; 210, spray main pipe; 220, spray ring pipe; 230, spray head; 300, turbulence structure; 310, mounting ring; 320, turbulence ring; 330, turbulence blade; 340, guard plate; 350, groove; 400, turbulence structure; 410, turbulence conduit; 420, drainage pipe; 430, drainage hood; 440, first turbulence orifice; 450, second turbulence orifice. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0035] This application discloses a spray device for a superheated steam saturator.

[0036] Reference Figure 1 and Figure 2 A spray device for a superheated steam saturator includes a superheated steam pipe 100 for conveying depressurized superheated steam. A spray structure 200 is disposed within the superheated steam pipe 100. The spray structure 200 includes a spray manifold 210, a spray ring pipe 220, and spray heads 230. The spray manifold 210 is fixedly connected to the superheated steam pipe 100 and penetrates the superheated steam pipe 100. The spray manifold 210 outside the superheated steam pipe 100 is connected to a cooling water source. The spray ring pipe 220 is fixedly connected to the spray manifold 210 inside the superheated steam pipe 100. The spray ring pipe 220 is coaxially arranged with the superheated steam pipe 100 and connected to the inner wall of the superheated steam pipe 100. Multiple spray heads 230 are provided, all fixedly connected to the spray ring pipe 220. The multiple spray heads 230 are circumferentially spaced and connected to the side of the spray ring pipe 220 away from the steam source. Multiple spray heads 230 are all inclined and extend in a direction that is closer to each other. The extended axes of the multiple spray heads 230 intersect at a point that is the center of the hot steam pipe 100.

[0037] Reference Figure 1 and Figure 2The superheated steam pipe 100 is further provided with a turbulence structure 300 for turbulenting the superheated steam. The turbulence structure 300 includes a mounting ring 310, a turbulence ring 320, turbulence blades 330, and a guard plate 340. The mounting ring 310 is rotatably connected to the inner wall of the superheated steam pipe 100. The mounting ring 310 and the spray ring pipe 220 are arranged sequentially at intervals along the direction of superheated steam transport, and the mounting ring 310 and the superheated steam pipe 100 are coaxially arranged. The thickness of the mounting ring 310 on the side near the spray ring pipe 220 is greater than the thickness of the side of the mounting ring 310 away from the spray ring pipe 220, thereby guiding the superheated steam in the superheated steam pipe 100. A groove 350 is formed on the side wall of the mounting ring 310 near the spray ring pipe 220 for the spray ring pipe 220 to sink into. The protective plate 340 is circumferentially fixed to the side wall of the mounting ring 310 near the spray ring tube 220. The protective plate 340 is arc-shaped and extends in the direction of the spray ring tube 220. The protective plate 340 and the groove 350 combine to form a cavity. The spray ring tube 220 is located in the cavity formed by the groove 350 and the protective plate 340.

[0038] Reference Figure 2 There are multiple spoiler rings 320, which are coaxially arranged and circumferentially fixed to the inner wall of the mounting ring 310. The multiple spoiler rings 320 are arranged at equal intervals along the width direction of the mounting ring 310. There are five spoiler blades 330, which are all fixedly connected to the inner wall of the mounting ring 310. The five spoiler blades 330 are arranged at equal intervals circumferentially.

[0039] Reference Figure 1 and Figure 2 A turbulence structure 400 is provided on the deflector blade 330. The turbulence structure 400 includes a turbulence conduit 410, a flow guide 420, and a flow guide hood 430. There are multiple turbulence conduits 410, all of which are fixedly connected to the side wall of the deflector blade 330 away from the spray ring pipe 220. The side wall of the deflector blade 330 away from the spray ring pipe 220 is the windward side. The turbulence conduits 410 extend along the width direction of the deflector blade 330, and multiple turbulence conduits 410 are arranged at intervals.

[0040] Reference Figure 2 and Figure 3 There are multiple drainage hoods 430, and one drainage hood 430 is fixedly connected to each turbulent conduit 410. The drainage hood 430 is located at the end of the turbulent conduit 410 away from the spray ring pipe 220, and the turbulent conduit 410 is connected to the drainage hood 430. The cross-sectional area of ​​the end of the drainage hood 430 near the turbulent conduit 410 is smaller than the cross-sectional area of ​​the end of the drainage hood 430 away from the turbulent conduit 410.

[0041] Reference Figure 2 and Figure 3There are multiple drainage tubes 420, and each turbulent conduit 410 has a drainage tube 420 fixedly connected to its inner wall. The cross-sectional area of ​​the drainage tube 420 near the spray ring tube 220 is smaller than the cross-sectional area of ​​the drainage tube 420 away from the spray ring tube 220.

[0042] Reference Figure 2 and Figure 3 Each turbulence conduit 410 has two first turbulence holes 440, which are arranged at intervals along the length of the turbulence conduit 410, and the drainage pipe 420 is located between the two first turbulence holes 440. The turbulence-deflecting blades 330 inside the turbulence conduit 410 have second turbulence holes 450, which are arranged at intervals between the first turbulence holes 440 and the second turbulence holes 450, and the second turbulence holes 450 are located between the two first turbulence holes 440.

[0043] The implementation principle of the spray device for a superheated steam saturator in this application embodiment is as follows:

[0044] When the depressurized superheated steam is conveyed through the superheated steam pipe 100, it first comes into contact with the turbulence vanes 330. Under the guidance of the turbulence vanes 330, the conveying direction of the superheated steam changes and collisions occur, thus forming turbulence. The turbulence vanes 330, driven by the superheated steam, cause the mounting ring 310 to rotate, and the rotation of the turbulence vanes 330 further turbulents the superheated steam.

[0045] The superheated steam at the turbulence blade 330 will also be guided and dispersed into multiple streams by the turbulence duct 410, the first turbulence hole 440, the second turbulence hole 450 and the guide pipe. The multiple streams of superheated steam will collide during the continued transport process, thereby further forming a better turbulence effect.

[0046] During the transport of superheated steam, cooling water is sprayed from multiple spray nozzles 230. After passing through the turbulence structure 300 and the turbulence structure 400, the superheated steam forms a relatively uniform turbulence. The turbulent superheated steam can disturb the water mist of the cooling water, thereby making the superheated steam and water mist evenly mixed.

[0047] 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 spray device for a superheated steam saturator, comprising a superheated steam pipe (100), characterized in that: A spray structure (200) is provided inside the superheated steam pipe (100). The spray structure (200) includes a spray main pipe (210), a spray ring pipe (220), and spray heads (230). The spray main pipe (210) is fixedly connected to the superheated steam pipe (100). One end of the spray main pipe (210) passes through the superheated steam pipe (100) and is connected to a water source. The spray ring pipe (220) is fixedly connected to the spray main pipe (210) and is connected to the inner wall of the superheated steam pipe (100). There are multiple spray heads (230) arranged circumferentially and connected to the spray ring pipe (220). The multiple spray heads (230) are inclined towards each other.

2. The spray device for a superheated steam saturator according to claim 1, characterized in that: The superheated steam pipe (100) is also provided with a turbulence structure (300), which includes a mounting ring (310) and turbulence blades (330). The mounting ring (310) is rotatably connected to the inner wall of the superheated steam pipe (100). The mounting ring (310) and the spray ring pipe (220) are arranged sequentially along the superheated steam conveying direction. There are multiple turbulence blades (330) arranged circumferentially and connected to the inner wall of the mounting ring (310).

3. The spray device for a superheated steam saturator according to claim 2, characterized in that: The thickness of the mounting ring (310) on the side closer to the spray ring tube (220) is greater than the thickness of the mounting ring (310) on the side farther away from the spray ring tube (220).

4. The spray device for a superheated steam saturator according to claim 3, characterized in that: The turbulence structure (300) further includes turbulence rings (320), there are multiple turbulence rings (320) and they are all fixedly connected to the inner wall of the mounting ring (310), and the multiple turbulence rings (320) are arranged at intervals along the superheated steam conveying direction.

5. A spray device for a superheated steam saturator according to any one of claims 2-4, characterized in that: The turbulence structure (400) is provided on the turbulence blade (330), the turbulence structure (400) includes a turbulence conduit (410), there are multiple turbulence conduits (410), and the multiple turbulence conduits (410) are fixedly connected to the side wall of the turbulence blade (330) away from the spray ring pipe (220). The turbulence conduit (410) is arranged along the width direction of the turbulence blade (330), and a first turbulence hole (440) is opened on the turbulence conduit (410).

6. The spray device for a superheated steam saturator according to claim 5, characterized in that: The turbulence duct (410) has a second turbulence hole (450) on the turbulence blade (330), and the first turbulence hole (440) and the second turbulence hole (450) are arranged at intervals.

7. The spray device for a superheated steam saturator according to claim 6, characterized in that: The turbulent structure (400) also includes a drainage tube (420), there are multiple drainage tubes (420) and they are all fixedly connected to the inner wall of the turbulent conduit (410). The drainage tube (420) is located between two adjacent first turbulent holes (440). The cross-sectional area of ​​the end of the drainage tube (420) near the spray ring tube (220) is smaller than the cross-sectional area of ​​the end of the drainage tube (420) away from the spray ring tube (220).

8. The spray device for a superheated steam saturator according to claim 7, characterized in that: The turbulent structure (400) also includes a flow guide (430), which is fixedly connected to the end of the turbulent conduit (410) away from the spray ring pipe (220), and the flow guide (430) is connected to the turbulent conduit (410).

9. The spray device for a superheated steam saturator according to claim 8, characterized in that: The mounting ring (310) is also provided with a protective plate (340) in a circumferential direction. The protective plate (340) bends and extends toward the spray ring pipe (220), and the spray ring pipe (220) is located in the cavity formed by the protective plate (340).

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