Water spraying desuperheater of steam boiler

Abstract

The utility model belongs to the technical field of steam boilers, and particularly relates to a steam boiler water spraying desuperheater which comprises a desuperheating cylinder, flange pieces are arranged at the two ends of the desuperheating cylinder respectively, connecting holes are formed in the side faces of the flange pieces at equal intervals in a surrounding mode, and a desuperheating sleeve shell is arranged on one side of the outer side of the desuperheating cylinder in a sleeved mode. A water inlet pipe communicates with one side of the upper side of the cooling sleeve shell, a connecting pipe communicates with one side, away from the water inlet pipe, of the upper side of the cooling sleeve shell, and the connecting pipe communicates with the inner side of the cooling cylinder. Softened water on the inner side of the temperature reduction sleeve shell can be preheated, the preheated softened water is sprayed out through the atomization spray head and is easier to absorb heat and be converted into steam after making contact with superheated steam, the utilization rate of atomized liquid can be greatly increased, redundant water in the temperature reduction barrel can be reduced, meanwhile, the redundant water can be collected through the water collecting shell, and the temperature reduction effect is improved. The steam is contacted in the temperature reduction cylinder for continuous evaporation, water is inhibited from entering a subsequent conveying pipeline, the influence of the water on subsequent cooling of the steam is reduced, and the influence of the water on the subsequent conveying pipeline is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam boilers, and in particular relates to a water spray desuperheater for a steam boiler. Background Art

[0002] When a steam boiler is delivering high-temperature steam, in order to prevent the superheated steam from overheating and damaging the pipeline and other conveying equipment, a desuperheater is generally required to be installed to cool the superheated steam. Common desuperheaters include water bath desuperheaters and water spray desuperheaters. The water bath desuperheater bathes the steam pipe in circulating desuperheated water for water bath cooling. The water spray desuperheater uses an atomizing nozzle to spray atomized droplets into the superheated steam. The atomized droplets absorb heat to form steam that mixes with the superheated steam to achieve the cooling effect. However, the desuperheating water of the current water spray desuperheater is sprayed out through the atomizing nozzle due to the fast flow rate of the superheated steam. , and the continuous mist spraying of cooling water will cause part of the cooling water to not absorb much heat in a short time, resulting in a decrease in the cooling efficiency. In order to achieve the cooling effect, the spray flow rate of the cooling water can only be increased, which will lead to an increase in the amount of water used. The excess water is driven by the cooled steam and enters the transmission pipeline. This part of water will subsequently cool the steam, making the steam lower than the monitoring temperature of the desuperheater, resulting in an increase in the error between the output steam and the estimated steam temperature. In addition, the water flows rapidly in the transmission pipeline with the steam, which can easily increase the vibration of the transmission pipeline and increase the aging and damage rate of the transmission pipeline. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a steam boiler water spray desuperheater to solve the problem that when the desuperheating water of the current water spray desuperheater is sprayed through the atomizing nozzle, the superheated steam flow rate is fast and the desuperheating water is continuously sprayed, which will cause part of the desuperheating water to fail to absorb much heat in a short time, resulting in reduced cooling efficiency. In order to achieve the cooling effect, the spray flow rate of the desuperheating water can only be increased, which will lead to an increase in the amount of water used. The excess water is driven by the desuperheated steam and enters the transmission pipeline. This part of water will subsequently cool the steam, making the steam lower than the monitoring temperature of the desuperheater, resulting in an increase in the error between the output steam and the estimated steam temperature. In addition, the water flows rapidly in the transmission pipeline with the steam, which easily increases the vibration of the transmission pipeline and increases the aging and damage rate of the transmission pipeline.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a steam boiler water spray desuperheater, including a desuperheating cylinder, flanges are respectively provided at both ends of the desuperheating cylinder, and connecting holes are equidistantly opened on the side surfaces of the flanges. A desuperheating shell is sleeved on the outer side of the desuperheating cylinder, and a water inlet pipe is connected to the upper side of the desuperheating shell. A connecting pipe is connected to the side of the upper side of the desuperheating shell away from the water inlet pipe, and the connecting pipe is connected to the inner side of the desuperheating cylinder. The connecting pipe passes through the desuperheating cylinder to the inner side where an atomizing nozzle is provided, and the lower side of the desuperheating cylinder is connected to a water collecting shell directly below the desuperheating shell.

[0005] The beneficial effects of the present invention are as follows: the atomizing nozzle sprays atomized droplets, and the atomized droplets will quickly absorb heat and evaporate after contacting the superheated steam, thereby cooling the superheated steam. At the same time, the cooling shell will absorb heat again from the steam after the initial cooling, and then preheat the softened water inside the cooling shell. After the preheated softened water is sprayed out through the atomizing nozzle, it is easier to absorb heat and convert into steam after contacting the superheated steam, which can greatly increase the utilization rate of the atomized liquid and reduce the amount of excess water in the cooling cylinder. At the same time, the water collecting shell can collect excess water and contact the steam in the cooling cylinder for continued evaporation, thereby inhibiting water from entering the subsequent transmission pipeline, reducing the influence of water on the subsequent cooling of the steam, and reducing the influence of water on the subsequent transmission pipeline.

[0006] To monitor the output temperature of steam;

[0007] As a further improvement of the above technical solution: a temperature monitor is provided on one end of the upper side of the desuperheating cylinder close to the desuperheating shell, and the connector of the temperature monitor passes through the desuperheating cylinder to the inside.

[0008] The beneficial effect of this improvement is that a temperature monitor is provided to monitor the output temperature of the steam.

[0009] In order to increase the utilization effect of atomized droplets;

[0010] As a further improvement of the above technical solution: the output direction of the atomizing nozzle is toward the side away from the cooling shell.

[0011] The beneficial effects of this improvement are: the output direction of the atomizing nozzle is toward the side away from the cooling shell, and can be sprayed directly in the input direction of the superheated steam, which can offset the superheated steam, making the atomized droplets more dispersed. In addition, the contact time and effect with the superheated steam can be increased, thereby increasing the utilization effect of the atomized droplets.

[0012] In order to protect the desuperheating cylinder;

[0013] As a further improvement of the above technical solution: an inner cylinder is provided on the inner side of the desuperheating cylinder close to the atomizing nozzle, and the atomizing nozzle passes through the inner cylinder to the inner side.

[0014] The beneficial effect of this improvement is: an inner cylinder is set up to protect the cooling cylinder. The inner cylinder can replace the cooling cylinder to contact the atomized water droplets just sprayed, withstand the impact of the high and low temperature intersection, and reduce the aging speed of the cooling cylinder.

[0015] In order to increase the stability of the screw fixing to the flange;

[0016] As a further improvement of the above technical solution: protective pads are inserted into the inner sides of the connecting holes.

[0017] The beneficial effects of this improvement are: protective gaskets are inserted into the inner sides of the connection holes. The protective gaskets can insulate and buffer the threaded parts used for flange connection, reduce the temperature and vibration effects on the threaded parts, and increase the stability of the threaded parts in fixing the flanges.

[0018] In order to increase the heat exchange effect with the softened water inside the cooling shell;

[0019] As a further improvement of the above technical solution: heat exchange plates are evenly arranged on the inner side of the temperature reduction shell, and holes and grooves are evenly opened on the side surfaces of the heat exchange plates.

[0020] The beneficial effect of this improvement is that heat exchange plates are evenly arranged on the inner side of the cooling shell, and holes and grooves are evenly opened on the sides of the heat exchange plates, which can increase the heat exchange effect with the softened water inside the cooling shell.

[0021] In order to provide overpressure protection for the inner side of the desuperheater;

[0022] As a further improvement of the above technical solution: a pressure relief hole is provided on the lower side of the water collecting shell away from the atomizing nozzle, and a pressure relief pipe is provided in the water collecting shell through the pressure relief hole. A fixed mesh is provided on the inner side of the pressure relief pipe, and a connecting bolt is provided on the side of the fixed mesh away from the water collecting shell. The connecting bolt passes through the fixed mesh and is fixed with a movable mesh. A spring is provided on the connecting bolt which is sleeved between the fixed mesh and the movable mesh. A plug is provided on one end of the connecting bolt close to the water collecting shell, and the plug is fitted and plugged into the water collecting shell to block the pressure relief hole.

[0023] The beneficial effect of this improvement is that the spring pushes the movable mesh, and the movable mesh drives the plug to seal the pressure relief hole through the connecting bolt. When the air pressure inside the cooling cylinder is too high, the plug can be pushed away and the pressure can be relieved through the connecting bolt connected to the pressure relief hole, thereby protecting the inside of the cooling cylinder from overpressure.

[0024] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0027] Figure 3 This is a cross-sectional view of the internal structure of the desuperheating cylinder in the utility model;

[0028] Figure 4 This is a cross-sectional view of the connection structure of the water collecting shell in the utility model;

[0029] Figure 5 This is a side structural sectional view of the temperature reduction housing in the utility model;

[0030] In the figure: 1. Cooling cylinder; 2. Flange; 3. Connecting hole; 31. Protective gasket; 4. Cooling shell; 41. Heat exchange plate; 5. Water inlet pipe; 6. Connecting pipe; 7. Atomizing nozzle; 8. Inner cylinder; 9. Temperature monitor; 10. Water collecting shell; 11. Pressure relief hole; 12. Pressure relief pipe; 13. Fixed mesh; 14. Connecting bolt; 15. Spring; 16. Movable mesh; 17. Plug. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0032] like Figure 1 — Figure 5As shown: A steam boiler water spray desuperheater, including a desuperheating cylinder 1, with flanges 2 provided at both ends of the desuperheating cylinder 1, and connecting holes 3 equidistantly opened on the side of the flange 2. A desuperheating shell 4 is provided on the outer side of the desuperheating cylinder 1, and a water inlet pipe 5 is provided on the upper side of the desuperheating shell 4. A connecting pipe 6 is provided on the upper side of the desuperheating shell 4 away from the water inlet pipe 5. The connecting pipe 6 is connected to the inner side of the desuperheating cylinder 1, and the connecting pipe 6 passes through the desuperheating cylinder 1 to the inner side. An atomizing nozzle 7 is provided. The lower side of the desuperheating cylinder 1 is connected to a water collecting shell 10 directly below the desuperheating shell 4. The atomizing nozzle 7 sprays atomized droplets. The atomized droplets will quickly absorb heat and evaporate after contacting the superheated steam, thereby cooling the superheated steam. At the same time, the desuperheating shell 4 will absorb heat again from the steam after the initial desuperheating, and then preheat the softened water inside the desuperheating shell 4. After the preheated softened water is sprayed out through the atomizing nozzle 7, it will be easier to absorb heat and convert into steam after contacting the superheated steam, which can greatly increase the desuperheating effect. The utilization rate of the atomized liquid is improved, the excess water in the cooling cylinder 1 is reduced, and the water collecting shell 10 can collect the excess water, contact the steam in the cooling cylinder 1 for further evaporation, inhibit water from entering the subsequent delivery pipeline, reduce the impact of water on the subsequent cooling of the steam, and reduce the impact of water on the subsequent delivery pipeline. A temperature monitor 9 is provided on the upper side of the cooling cylinder 1 near the cooling shell 4. The connector of the temperature monitor 9 passes through the cooling cylinder 1 to the inside. A temperature monitor 9 is provided to monitor the output temperature of the steam. The output direction of the atomizing nozzle 7 is toward the side away from the cooling shell 4. The output direction of the atomizing nozzle 7 is toward the side away from the cooling shell 4. It can be sprayed directly in the input direction of the superheated steam and can collide with the superheated steam to make the atomized droplets more dispersed. In addition, it can increase the contact time and effect with the superheated steam, thereby increasing the utilization effect of the atomized droplets. An inner cylinder 8 is provided on the inner side of the cooling cylinder 1 near the atomizing nozzle 7. The atomizing nozzle 7 passes through the inner cylinder 8 to the inside. An inner cylinder 8 is provided.The inner tube 8 is used to protect the cooling tube 1. The inner tube 8 can replace the cooling tube 1 to contact the atomized water droplets just sprayed, withstand the impact of the high and low temperature intersection, and reduce the aging speed of the cooling tube 1. The inner sides of the connecting holes 3 are all plugged with protective gaskets 31. The inner sides of the connecting holes 3 are all plugged with protective gaskets 31. The provision of protective gaskets 31 can insulate and buffer the threaded parts used for connecting the flange 2, reduce the temperature and vibration effects on the threaded parts, and increase the stability of the threaded parts fixed to the flange 2. The inner side of the cooling shell 4 is evenly provided with heat exchange plates 41, and the sides of the heat exchange plates 41 are evenly provided with holes and grooves. The inner side of the cooling shell 4 is evenly provided with heat exchange plates 41, and the sides of the heat exchange plates 41 are evenly provided with holes and grooves, which can increase the heat exchange effect with the softened water inside the cooling shell 4. The water collecting shell 10 is provided with a pressure relief hole 1 on the lower side away from the atomizing nozzle 7. 1. The water collecting shell 10 is connected to a pressure relief pipe 12 through a pressure relief hole 11. A fixed mesh 13 is provided on the inner side of the pressure relief pipe 12. A connecting bolt 14 is provided on the side of the fixed mesh 13 away from the water collecting shell 10. The connecting bolt 14 passes through the fixed mesh 13 and is fixed with a movable mesh 16. A spring 15 is provided between the fixed mesh 13 and the movable mesh 16. A plug 17 is provided on the end of the connecting bolt 14 close to the water collecting shell 10. The plug 17 fits and plugs with the water collecting shell 10. The plug 17 blocks the pressure relief hole 11. The spring 15 pushes the movable mesh 16. The movable mesh 16 drives the plug 17 to block the pressure relief hole 11 through the connecting bolt 14. When the air pressure inside the desuperheating cylinder 1 is too high, the plug 17 can be pushed open and the pressure can be relieved by connecting the connecting bolt 14 through the pressure relief hole 11, thereby providing overpressure protection for the inside of the desuperheating cylinder 1.

[0033] The working principle and use process of this utility model:

[0034] When in use, the end of the cooling tube 1 close to the atomizing nozzle 7 is connected to the superheated steam input pipe through the flange 2, and the end of the cooling tube 1 away from the atomizing nozzle 7 is connected to the steam output pipe through the flange 2. The cooling shell 4 is connected to the softened water for cooling through the water inlet pipe 5. The connecting pipe 6 is used to transport the softened water to spray atomized droplets from the atomizing nozzle 7. After the atomized droplets come into contact with the superheated steam, they will quickly absorb heat and evaporate, cooling the superheated steam. At the same time, the cooling shell 4 will absorb heat again from the steam after the initial cooling, and then preheat the softened water inside the cooling shell 4. The preheated softened water passes through the atomizer. After the spray nozzle 7 sprays out, it is easier to absorb heat and convert into steam after contacting the superheated steam, which can greatly increase the utilization rate of the atomized liquid and reduce the excess water in the cooling tube 1. At the same time, the water collecting shell 10 can collect excess water and contact the steam in the cooling tube 1 for continued evaporation, thereby inhibiting water from entering the subsequent delivery pipeline, reducing the impact of water on the subsequent cooling of the steam, and reducing the impact of water on the subsequent delivery pipeline. In addition, when in use, a temperature monitor 9 is provided to monitor the output temperature of the steam. In addition, the output direction of the atomizing nozzle 7 is toward the side away from the cooling shell 4, which can face the superheated steam. The spray is sprayed in the input direction, which can collide with the superheated steam to make the atomized droplets more dispersed. In addition, the contact time and effect with the superheated steam can be increased, thereby increasing the utilization effect of the atomized droplets. In addition, an inner cylinder 8 is provided, and the inner cylinder 8 is used to protect the cooling cylinder 1. The inner cylinder 8 can replace the cooling cylinder 1 to contact the atomized water droplets just sprayed, withstand the impact of the high and low temperature intersection, and reduce the aging speed of the cooling cylinder 1. In addition, the inner side of the connecting hole 3 is plugged with a protective gasket 31. The protective gasket 31 is provided to insulate and buffer the threaded parts used for connecting the flange 2, reducing the damage to the threaded parts. The temperature and vibration effects of the cooling tube 1 are increased, and the stability of the fixing of the flange 2 by the threaded parts is increased. In addition, when in use, the inner side of the cooling shell 4 is evenly provided with heat exchange plates 41, and the sides of the heat exchange plates 41 are evenly provided with holes and grooves, which can increase the heat exchange effect with the softened water inside the cooling shell 4. In addition, when in use, the spring 15 pushes the movable mesh 16, and the movable mesh 16 drives the plug 17 to block the pressure relief hole 11 through the connecting bolt 14. When the air pressure inside the cooling tube 1 is too high, the plug 17 can be pushed away, and the connecting bolt 14 can be connected through the pressure relief hole 11 to relieve the pressure, thereby performing overpressure protection on the inside of the cooling tube 1.

[0035] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A steam boiler water spray desuperheater, characterized in that: The invention comprises a cooling tube (1), wherein flanges (2) are respectively provided at both ends of the cooling tube (1), and connecting holes (3) are equidistantly provided on the side of the flange (2). A cooling shell (4) is sleeved on the outer side of the cooling tube (1), and a water inlet pipe (5) is provided on the upper side of the cooling shell (4). A connecting pipe (6) is provided on the upper side of the cooling shell (4) away from the water inlet pipe (5). The connecting pipe (6) is connected to the inner side of the cooling tube (1), and the connecting pipe (6) passes through the cooling tube (1) to the inner side where an atomizing nozzle (7) is provided. The lower side of the cooling tube (1) is connected to a water collecting shell (10) directly below the cooling shell (4).

2. A steam boiler water spray desuperheater according to claim 1, characterized in that: A temperature monitor (9) is provided on one end of the upper side of the cooling cylinder (1) close to the cooling sleeve (4), and a connector of the temperature monitor (9) passes through the cooling cylinder (1) to the inside.

3. The steam boiler water spray desuperheater according to claim 1, characterized in that: The output direction of the atomizing nozzle (7) is toward a side away from the cooling housing (4).

4. The steam boiler water spray desuperheater according to claim 1, characterized in that: An inner cylinder (8) is provided on the inner side of the desuperheating cylinder (1) close to the atomizing nozzle (7), and the atomizing nozzle (7) passes through the inner cylinder (8) to the inner side.

5. The steam boiler water spray desuperheater according to claim 1, characterized in that: The inner sides of the connection holes (3) are all provided with protective pad covers (31) for insertion.

6. The steam boiler water spray desuperheater according to claim 1, characterized in that: Heat exchange plates (41) are evenly arranged on the inner side of the temperature reduction shell (4), and holes and grooves are evenly opened on the side surfaces of the heat exchange plates (41).

7. The steam boiler water spray desuperheater according to claim 1, characterized in that: A pressure relief hole (11) is provided on the lower side of the water collecting shell (10) away from the atomizing nozzle (7); a pressure relief pipe (12) is provided on the water collecting shell (10) in communication with the pressure relief hole (11); a fixed mesh (13) is provided on the inner side of the pressure relief pipe (12); a connecting bolt (14) is provided on the side of the fixed mesh (13) away from the water collecting shell (10); the connecting bolt (14) passes through the fixed mesh (13) and is fixed with a movable mesh (16); a spring (15) is provided on the connecting bolt (14) between the fixed mesh (13) and the movable mesh (16); a plug (17) is provided on one end of the connecting bolt (14) close to the water collecting shell (10); the plug (17) is plugged into the water collecting shell (10) and blocks the pressure relief hole (11).

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