Intelligent water supply and oxygen removal system and method for waste heat boiler

Abstract

The invention relates to the technical field of intelligent water supply and oxygen removal, and discloses a waste heat boiler intelligent water supply and oxygen removal system and a method thereof.The waste heat boiler intelligent water supply and oxygen removal system comprises a treatment box, a conveying pipe is fixedly installed at the top of the treatment box and used for conveying water needing oxygen removal treatment, and an air inlet pipe used for conveying steam into the treatment box is fixedly installed at one end of the treatment box; an exhaust pipe; a liquid storage tank and an intelligent detection control mechanism; the intelligent detection control mechanism is arranged, a temperature sensor is arranged to detect the temperature in the treatment box, a dissolved oxygen measuring instrument is arranged to detect the oxygen content of liquid in the liquid storage box, and when the detected oxygen content is low, the pressure and the temperature are correspondingly reduced; and when the oxygen content is relatively high, the pressure and the temperature are increased, and the oxygen content in the treated water is reduced, so that the dissolved oxygen in the water can be controlled within a qualified range according to different working pressures of the boiler, and an intelligent water supply effect is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent feed water deaeration, and specifically to an intelligent feed water deaeration system and method for a waste heat boiler. Background Art

[0002] With the continuous change of the heat supply demand of power plants, especially the increasing demand for steam heating and the increasing distance of heat supply, in more and more projects, the exhaust steam of steam turbines is used for heating and no longer recycled. This results in a large amount of feed water being required to be supplemented during the operation of gas turbines. As is well known, the molecular oxygen in the air dissolved in water is called dissolved oxygen, and its content index is closely related to the partial pressure of oxygen in the air and the temperature of water. The amount of dissolved oxygen in water is an index to measure the self-purification ability of water bodies. For boilers, the feed water quality has a crucial impact on the normal operation of boilers, the service life of equipment, and the use effect.

[0003] The traditional waste heat boiler feed water deaeration system directly processes the feed water for deaeration, and cannot well control the amount of deaeration. It cannot intelligently control the dissolved oxygen in the feed water within a qualified range according to the different working pressures of the boiler, and the use effect is not good. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent feed water deaeration system and method for a waste heat boiler to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An intelligent feed water deaeration system for a waste heat boiler, comprising: A treatment tank, on the top of which a delivery pipe is fixedly installed. The delivery pipe is used to deliver the water that needs to be deaerated. One end of the delivery pipe is fixedly installed with a spray head. The delivery pipe is communicated with the treatment tank. One end of the treatment tank is fixedly installed with an intake pipe for delivering steam into the treatment tank; An exhaust pipe, which is fixedly installed on the top of the treatment tank and is communicated with the treatment tank; A liquid storage tank, which is installed at the bottom of the treatment tank and is used to store the water after deaeration treatment; An intelligent detection and control mechanism, which is installed in the treatment tank and the liquid storage tank. The intelligent detection and control mechanism detects the internal pressure and temperature of the treatment tank through a pressure gauge and a temperature sensor, and detects the dissolved oxygen content of the water after deaeration treatment in the liquid storage tank through a dissolved oxygen meter.

[0006] Optionally, the intelligent detection and control mechanism includes a threaded rod, a valve flap, a mounting bracket, a mounting shaft, a fixing bracket, a first connecting shaft, a first connecting rod, a second connecting shaft, a second connecting rod, a third connecting shaft, a moving bracket, and a limiting bracket. The mounting bracket is fixedly installed on the inner wall of the exhaust pipe. The valve flap is rotatably connected to one side of the mounting bracket through the mounting shaft. The fixing bracket is fixedly installed on the top of the mounting bracket. The limiting bracket is fixedly installed on the top of the fixing bracket. The moving bracket is slidably connected to the inside of the limiting bracket. The moving bracket is located on the top of the fixing bracket. The threaded rod is rotatably connected to the top of the fixing bracket. The threaded rod is movably connected to the moving bracket. The first connecting shaft is rotatably connected to one side of the fixing bracket. The third connecting shaft is rotatably connected to one side of the moving bracket. One end of the first connecting rod is fixedly installed on the side wall of the first connecting shaft. One end of the second connecting rod is fixedly installed on the side wall of the third connecting shaft. The other end of the first connecting rod is movably connected to the other end of the second connecting rod through the second connecting shaft. The second connecting shaft is located on the top of the valve flap.

[0007] Optionally, a servo motor is fixedly installed on the top of the limiting bracket. The threaded rod is fixedly installed on the output end of the servo motor. The threaded rod is rotatably connected to the top of the fixing bracket through the servo motor.

[0008] Optionally, the mounting shaft is rotatably connected to one side of the mounting bracket. The valve flap is fixedly installed on the side wall of the mounting shaft. The valve flap is semi-circular.

[0009] Optionally, the intelligent detection and control mechanism further includes a control device, a solenoid valve, a delivery pump, and a connecting pipe. The control device is fixedly installed on one side of the processing tank. The solenoid valve is fixedly installed on one side of the intake pipe. The delivery pump is fixedly installed on the side wall of the liquid storage tank. And the input end of the delivery pump is communicated with the liquid storage tank. One end of the connecting pipe is fixedly installed on the output end of the delivery pump. The other end of the connecting pipe is fixedly installed inside the delivery pipe. The connecting pipe is communicated with the delivery pipe. An electric heating wire is fixedly installed inside the processing tank.

[0010] Optionally, a central processor, a processing module, and a calculation module are installed inside the control device.

[0011] Optionally, the pressure gauge is fixedly installed on the side wall of the processing tank. The temperature sensor is fixedly installed inside the processing tank. The dissolved oxygen measuring instrument is fixedly installed at the bottom of the liquid storage tank. A measuring end is fixedly installed on the top of the dissolved oxygen measuring instrument. The measuring end is located inside the liquid storage tank.

[0012] Optionally, a connecting pipe is fixedly installed between the treatment tank and the liquid storage tank. A first control valve is fixedly installed inside the connecting pipe. A water supply pipe is fixedly installed at the bottom of the liquid storage tank. A second control valve is fixedly installed at one end of the water supply pipe.

[0013] Optionally, a support frame is fixedly installed inside the treatment tank. A plurality of sieve meshes are fixedly installed inside the support frame. The sieve meshes are located at the bottom of the spray head.

[0014] The intelligent feed water deaeration method for a waste heat boiler specifically includes the following steps: S1: During use, the water to be deaerated is filled into the treatment tank through a delivery pipe. The water is sprayed into the treatment tank through a spray head at one end of the delivery pipe. The water sprayed by the spray head will fall on the sieve mesh, enabling the water sprayed by the spray head on the sieve mesh to disperse better, improving the deaeration effect. At the same time, steam is filled into the treatment tank through an air inlet pipe to heat the water and increase the pressure inside the treatment tank, performing deaeration processing on the water. S2: During the treatment process, a temperature sensor can be used to detect the temperature inside the treatment tank and transmit the data to the control device. A pressure gauge can be used to detect the pressure inside the treatment tank and transmit the data to the control device. After completion, the first control valve is opened, enabling the water inside the treatment tank to flow into the liquid storage tank through the connecting pipe. A dissolved oxygen meter at the bottom of the liquid storage tank can be used to detect the oxygen content of the liquid inside the liquid storage tank and transmit the detection data to the control device. When the detected oxygen content of the liquid is low, the servo motor is used to control the moving frame to move upward, increasing the distance between the second connecting shaft and the valve flap, enabling the gas to be discharged from the exhaust pipe faster, and reducing the power of the electric heating wire, thereby reducing the pressure and temperature inside the treatment tank and increasing the oxygen content in the treated water. When the oxygen content is high, the servo motor is used to control the moving frame to move downward, reducing the distance between the second connecting shaft and the valve flap, enabling the gas to be discharged from the exhaust pipe slower, and increasing the power of the electric heating wire, thereby increasing the pressure and temperature inside the treatment tank and reducing the oxygen content in the treated water.

[0015] (1) In this solution, by setting up an intelligent detection and control mechanism, a temperature sensor can be used to detect the temperature inside the treatment tank, and a dissolved oxygen meter can be used to detect the oxygen content of the liquid inside the liquid storage tank. When the detected oxygen content is low, the pressure and temperature are correspondingly reduced to increase the oxygen content in the treated water. When the oxygen content is high, the pressure and temperature are increased to reduce the oxygen content in the treated water, thereby enabling the dissolved oxygen of the water to be controlled within a qualified range according to the different working pressures of the boiler, achieving the effect of intelligent feed water. (2) In this solution, by setting up a limit frame and a threaded rod, when the threaded rod rotates, it can control the up and down movement of the moving frame inside the limit frame. By the up and down movement of the moving frame, the distance between the second connecting shaft and the valve flap can be controlled, thereby controlling the maximum opening angle of the valve flap, and thus controlling the amount of gas discharged from the exhaust pipe to achieve the effect of controlling the pressure inside the treatment tank. (3) In this solution, by setting up a delivery pump and a connecting pipe, the incompletely treated liquid in the liquid storage tank can be transported back to the delivery pipe through the delivery pump and the connecting pipe for secondary treatment. (4) In this solution, by setting up a sieve mesh, the water sprayed by the nozzle on the sieve mesh can be better dispersed, making the deoxygenation effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the present invention; Figure 3 It is a schematic structural diagram of one side of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the exhaust pipe of the present invention; Figure 5 For the present invention Figure 4 It is an enlarged structural diagram of part A in the present invention; Figure 6 It is a system diagram of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: 1. Treatment tank; 11. Intake pipe; 111. Solenoid valve; 12. Delivery pipe; 121. Nozzle; 13. Exhaust pipe; 14. Connecting pipe; 15. First control valve; 16. Support frame; 17. Sieve mesh; 18. Electric heating wire; 2. Control device; 201. Central processing unit; 202. Processing module; 203. Calculation module; 21. Pressure gauge; 22. Dissolved oxygen measuring instrument; 221. Measuring end; 23. Delivery pump; 231. Connecting pipe; 24. Servo motor; 241. Threaded rod; 25. Valve flap; 251. Mounting frame; 252. Mounting shaft; 26. Fixed frame; 261. First connecting shaft; 262. First connecting rod; 263. Second connecting shaft; 264. Second connecting rod; 265. Third connecting shaft; 266. Moving frame; 267. Limit frame; 27. Temperature sensor; 3. Liquid storage tank; 31. Water supply pipe; 32. Second control valve. Detailed implementation mode

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-6 , the present invention provides an intelligent feed water deaeration system and method for a waste heat boiler, including: A treatment tank 1, on the top of the treatment tank 1, a delivery pipe 12 is fixedly installed. The delivery pipe 12 is used to deliver water that needs to be deaerated. One end of the delivery pipe 12 is fixedly installed with a nozzle 121. The delivery pipe 12 is communicated with the treatment tank 1. One end of the treatment tank 1 is fixedly installed with an intake pipe 11 for delivering steam into the treatment tank 1; An exhaust pipe 13, the exhaust pipe 13 is fixedly installed on the top of the treatment tank 1, and the exhaust pipe 13 is communicated with the treatment tank 1; A liquid storage tank 3, the liquid storage tank 3 is installed at the bottom of the treatment tank 1, and the liquid storage tank 3 is used to store the water after deaeration treatment; An intelligent detection and control mechanism, the intelligent detection and control mechanism is installed in the treatment tank 1 and the liquid storage tank 3. The intelligent detection and control mechanism detects the internal pressure and temperature of the treatment tank 1 through a pressure gauge 21 and a temperature sensor 27. The intelligent detection and control mechanism detects the dissolved oxygen content of the water after deaeration treatment in the liquid storage tank 3 through a dissolved oxygen meter 22.

[0020] In some embodiments, refer to Figure 4 , Figure 5, the intelligent detection and control mechanism includes a threaded rod 241, a valve flap 25, a mounting bracket 251, a mounting shaft 252, a fixing bracket 26, a first connecting shaft 261, a first connecting rod 262, a second connecting shaft 263, a second connecting rod 264, a third connecting shaft 265, a moving bracket 266 and a limiting bracket 267. The mounting bracket 251 is fixedly installed on the inner wall of the exhaust pipe 13. The valve flap 25 is rotatably connected to one side of the mounting bracket 251 through the mounting shaft 252. The fixing bracket 26 is fixedly installed on the top of the mounting bracket 251. The limiting bracket 267 is fixedly installed on the top of the fixing bracket 26. The moving bracket 266 is slidably connected inside the limiting bracket 267. The moving bracket 266 is located on the top of the fixing bracket 26. The threaded rod 241 is rotatably connected to the top of the fixing bracket 26. The threaded rod 241 is movably connected to the moving bracket 266. The first connecting shaft 261 is rotatably connected to one side of the fixing bracket 26. The third connecting shaft 265 is rotatably connected to one side of the moving bracket 266. One end of the first connecting rod 262 is fixedly installed on the side wall of the first connecting shaft 261. One end of the second connecting rod 264 is fixedly installed on the side wall of the third connecting shaft 265. The other end of the first connecting rod 262 is movably connected to the other end of the second connecting rod 264 through the second connecting shaft 263. The second connecting shaft 263 is located on the top of the valve flap 25. By providing the limiting bracket 267 and the threaded rod 241, when the threaded rod 241 rotates, it can control the up and down movement of the moving bracket 266 inside the limiting bracket 267. By the up and down movement of the moving bracket 266, the distance between the second connecting shaft 263 and the valve flap 25 can be controlled, thereby controlling the maximum opening angle of the valve flap 25, so as to control the amount of gas discharged from the exhaust pipe 13 and achieve the effect of controlling the pressure inside the treatment tank 1.

[0021] In some embodiments, refer to Figure 4 , Figure 5 , a servo motor 24 is fixedly installed on the top of the limiting bracket 267. The threaded rod 241 is fixedly installed on the output end of the servo motor 24. The threaded rod 241 is rotatably connected to the top of the fixing bracket 26 through the servo motor 24. The mounting shaft 252 is rotatably connected to one side of the mounting bracket 251. The valve flap 25 is fixedly installed on the side wall of the mounting shaft 252. The valve flap 25 is semi-circular. By providing the servo motor 24, it can be used to control the rotation of the threaded rod 241. By providing the valve flap 25, it can be used to control the opening and closing of the exhaust pipe 13.

[0022] In some embodiments, refer to Figure 1 , Figure 3, the intelligent detection and control mechanism further includes a control device 2, a solenoid valve 111, a delivery pump 23, and a connecting pipe 231. The control device 2 is fixedly installed on one side of the treatment tank 1, the solenoid valve 111 is fixedly installed on one side of the intake pipe 11, the delivery pump 23 is fixedly installed on the side wall of the liquid storage tank 3, and the input end of the delivery pump 23 is communicated with the liquid storage tank 3. One end of the connecting pipe 231 is fixedly installed at the output end of the delivery pump 23, and the other end of the connecting pipe 231 is fixedly installed inside the delivery pipe 12. The connecting pipe 231 is communicated with the delivery pipe 12. An electric heating wire 18 is fixedly installed inside the treatment tank 1. By setting the solenoid valve 111, it can be used to control the communication state between the intake pipe 11 and the treatment tank 1. By setting the delivery pump 23 and the connecting pipe 231, the incompletely treated liquid in the liquid storage tank 3 can be transported again into the delivery pipe 12 through the delivery pump 23 and the connecting pipe 231 for secondary treatment.

[0023] In some embodiments, refer to Figure 1 , Figure 6 , a central processing unit 201, a processing module 202, and a calculation module 203 are installed inside the control device 2. The model of the central processing unit 201 is Xeon Scalable. By setting the central processing unit 201, it is used to integrate and process data. The model of the processing module 202 is Jetson Nano. By setting the processing module 202, it is used to process the received data. The model of the calculation module 203 is Broadcom BCM2711. By setting the calculation module 203, the pressure and temperature inside the treatment tank 1 can be adjusted accordingly according to the received data. When the detected oxygen content is low, the pressure and temperature are correspondingly reduced to increase the oxygen content in the treated water. When the oxygen content is high, the pressure and temperature are increased to reduce the oxygen content in the treated water.

[0024] In some embodiments, refer to Figure 1 , Figure 2 , a pressure gauge 21 is fixedly installed on the side wall of the treatment tank 1, a temperature sensor 27 is fixedly installed inside the treatment tank 1, a dissolved oxygen meter 22 is fixedly installed at the bottom of the liquid storage tank 3, and a measuring end 221 is fixedly installed on the top of the dissolved oxygen meter 22. The measuring end 221 is located inside the liquid storage tank 3. By setting the temperature sensor 27, it can be used to detect the temperature inside the treatment tank 1. By setting the dissolved oxygen meter 22, it can be used to detect the oxygen content of the liquid inside the liquid storage tank 3. The temperature sensor 27 and the dissolved oxygen meter 22 are both connected to the control device 2.

[0025] In some embodiments, refer to Figure 1 , Figure 2, a connecting pipe 14 is fixedly installed between the treatment tank 1 and the liquid storage tank 3. A first control valve 15 is fixedly installed inside the connecting pipe 14. A water supply pipe 31 is fixedly installed at the bottom of the liquid storage tank 3. A second control valve 32 is fixedly installed at one end of the water supply pipe 31. By setting the first control valve 15, it can be used to control whether the connecting pipe 14 is connected. By setting the second control valve 32, it can be used to control whether the water supply pipe 31 is connected. Both the first control valve 15 and the second control valve 32 are connected to the control device 2, and the control device 2 controls the first control valve 15 and the second control valve 32.

[0026] In some embodiments, refer to Figure 1 , Figure 2 , a support frame 16 is fixedly installed inside the treatment tank 1. A plurality of screen meshes 17 are fixedly installed inside the support frame 16. The screen meshes 17 are located at the bottom of the spray head 121. By setting the screen meshes 17, the water sprayed by the spray head 121 on the screen meshes 17 can spread better, making the deaeration effect better.

[0027] During use, the water to be deaerated is filled into the treatment tank 1 through the delivery pipe 12. The water is sprayed into the interior of the treatment tank 1 through the spray head 121 at one end of the delivery pipe 12. The water sprayed by the spray head 121 will fall on the screen meshes 17, making the water sprayed by the spray head 121 on the screen meshes 17 spread better, making the deaeration effect better. At the same time, steam is filled into the treatment tank 1 through the intake pipe 11, heating the water and increasing the pressure inside the treatment tank 1 to perform deaeration processing on the water. The temperature sensor 27 can be used to detect the temperature inside the treatment tank 1 and transmit the data to the control device 2. The pressure gauge 21 can be used to detect the pressure inside the treatment tank 1 and transmit the data to the control device 2. After completion, the first control valve 15 is opened, so that the water inside the treatment tank 1 flows into the liquid storage tank 3 through the connecting pipe 14. The dissolved oxygen meter 22 at the bottom of the liquid storage tank 3 can be used to detect the oxygen content of the liquid inside the liquid storage tank 3 and transmit the detection data to the control device 2. When the detected oxygen content of the liquid is low, the servo motor 24 controls the moving frame 266 to move upward, increasing the distance between the second connecting shaft 263 and the valve flap 25, so that the gas can be discharged from the exhaust pipe 13 faster, and the power of the electric heating wire 18 is reduced, thereby reducing the pressure and temperature inside the treatment tank 1. When the oxygen content is high, the servo motor 24 controls the moving frame 266 to move downward, reducing the distance between the second connecting shaft 263 and the valve flap 25, making the gas discharged from the exhaust pipe 13 slower, and increasing the power of the electric heating wire 18, so as to increase the pressure and temperature inside the treatment tank 1, achieving the effect of intelligent water supply.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Waste heat boiler intelligent feed water deoxygenation system, characterized in that: include: A treatment box (1), wherein a delivery pipe (12) is fixedly mounted on the top of the treatment box (1), the delivery pipe (12) is used to transport water that needs to be deoxygenated, a nozzle (121) is fixedly mounted on one end of the delivery pipe (12), the delivery pipe (12) is connected to the treatment box (1), and an air inlet pipe (11) is fixedly mounted on one end of the treatment box (1) for transporting steam into the treatment box (1); An exhaust pipe (13), the exhaust pipe (13) being fixedly mounted on the top of the processing box (1), the exhaust pipe (13) being in communication with the processing box (1); A liquid storage tank (3), the liquid storage tank (3) being installed at the bottom of the treatment tank (1), the liquid storage tank (3) being used to store water after deoxygenation treatment; An intelligent detection and control mechanism is installed in the processing box (1) and the liquid storage box (3). The intelligent detection and control mechanism detects the internal pressure and temperature of the processing box (1) through a barometer (21) and a temperature sensor (27). The intelligent detection and control mechanism detects the dissolved oxygen content of the water after deoxygenation treatment inside the liquid storage box (3) through a dissolved oxygen meter (22).

2. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 1 is characterized in that: The intelligent detection and control mechanism comprises a threaded rod (241), a valve flap (25), a mounting frame (251), a mounting shaft (252), a fixed frame (26), a first connecting shaft (261), a first connecting rod (262), a second connecting shaft (263), a second connecting rod (264), a third connecting shaft (265), a movable frame (266) and a limiting frame (267), wherein the mounting frame (251) is fixedly mounted on the inner wall of the exhaust pipe (13), the valve flap (25) is rotatably connected to one side of the mounting frame (251) via the mounting shaft (252), the fixed frame (26) is fixedly mounted on the top of the mounting frame (251), the limiting frame (267) is fixedly mounted on the top of the fixed frame (26), and the movable frame (266) is slidably connected to the inside of the limiting frame (267). The movable frame (266) is located at the top of the fixed frame (26); the threaded rod (241) is rotatably connected to the top of the fixed frame (26); the threaded rod (241) is movably connected to the movable frame (266); the first connecting shaft (261) is rotatably connected to one side of the fixed frame (26); the third connecting shaft (265) is rotatably connected to one side of the movable frame (266); one end of the first connecting rod (262) is fixedly mounted on a side wall of the first connecting shaft (261); one end of the second connecting rod (264) is fixedly mounted on a side wall of the third connecting shaft (265); the other end of the first connecting rod (262) is movably connected to the other end of the second connecting rod (264) via the second connecting shaft (263); and the second connecting shaft (263) is located at the top of the valve flap (25).

3. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 2 is characterized in that: A servo motor (24) is fixedly mounted on the top of the limiting frame (267), the threaded rod (241) is fixedly mounted on the output end of the servo motor (24), and the threaded rod (241) is rotatably connected to the top of the fixing frame (26) via the servo motor (24).

4. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 2 is characterized in that: The mounting shaft (252) is rotatably connected to one side of the mounting frame (251); the valve flap (25) is fixedly mounted on a side wall of the mounting shaft (252); and the valve flap (25) is semicircular.

5. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 1 is characterized in that: The intelligent detection control mechanism further comprises a control device (2), a solenoid valve (111), a delivery pump (23) and a connecting pipe (231); the control device (2) is fixedly mounted on one side of the processing box (1); the solenoid valve (111) is fixedly mounted on one side of the air intake pipe (11); the delivery pump (23) is fixedly mounted on the side wall of the liquid storage box (3); an input end of the delivery pump (23) is connected to the liquid storage box (3); one end of the connecting pipe (231) is fixedly mounted on the output end of the delivery pump (23); the other end of the connecting pipe (231) is fixedly mounted inside the delivery pipe (12); the connecting pipe (231) is connected to the delivery pipe (12); and an electric heating wire (18) is fixedly mounted inside the processing box (1).

6. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 5 is characterized in that: The control device (2) has a central processing unit (201), a processing module (202) and a calculation module (203) installed inside.

7. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 1 is characterized in that: The barometer (21) is fixedly mounted on a side wall of the processing box (1), the temperature sensor (27) is fixedly mounted inside the processing box (1), the dissolved oxygen meter (22) is fixedly mounted on the bottom of the liquid storage tank (3), and a measuring end (221) is fixedly mounted on the top of the dissolved oxygen meter (22), and the measuring end (221) is located inside the liquid storage tank (3).

8. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 1 is characterized in that: A connecting pipe (14) is fixedly installed between the processing box (1) and the liquid storage box (3), a first control valve (15) is fixedly installed inside the connecting pipe (14), a water supply pipe (31) is fixedly installed at the bottom of the liquid storage box (3), and a second control valve (32) is fixedly installed at one end of the water supply pipe (31).

9. The intelligent feedwater deoxygenation system for waste heat boiler according to claim 1 is characterized in that: A support frame (16) is fixedly installed inside the processing box (1), and a plurality of screens (17) are fixedly installed inside the support frame (16), wherein the screens (17) are located at the bottom of the nozzle (121).

10. The method of the intelligent feedwater deoxygenation system for waste heat boiler according to any one of claims 1 to 9, characterized in that: The specific steps include: S1: When in use, water to be deoxygenated is added to the treatment box (1) through the delivery pipe (12), and then sprayed into the treatment box (1) through the nozzle (121) at one end of the delivery pipe (12). The water sprayed from the nozzle (121) falls on the screen (17), so that the water sprayed on the screen (17) by the nozzle (121) can be better dispersed, so that the deoxygenation effect is better. At the same time, steam is added to the treatment box (1) through the air inlet pipe (11), so that the water is heated and the internal pressure of the treatment box (1) is increased, so that the water is deoxygenated; S2: During the treatment process, the temperature sensor (27) can be used to detect the temperature inside the treatment box (1) and transmit the data to the control device (2). The barometer (21) can be used to detect the pressure inside the treatment box (1) and transmit the data to the control device (2). After completion, the first control valve (15) is opened to allow the water inside the treatment box (1) to flow into the liquid storage tank (3) through the connecting pipe (14). The dissolved oxygen measuring instrument (22) at the bottom of the liquid storage tank (3) can be used to detect the oxygen content of the liquid inside the liquid storage tank (3) and transmit the detection data to the control device (2). When the detected oxygen content of the liquid is low, the servo motor (24) is used to control the liquid storage tank (3). The movable frame (266) is controlled to move upward, so that the distance between the second connecting shaft (263) and the valve disc (25) increases, so that the gas can be discharged from the exhaust pipe (13) more quickly, and the power of the electric heating wire (18) is reduced, thereby reducing the pressure and temperature inside the treatment box (1) and increasing the oxygen content in the treated water. When the oxygen content is high, the movable frame (266) is controlled to move downward by the servo motor (24), so that the distance between the second connecting shaft (263) and the valve disc (25) decreases, so that the gas can be discharged from the exhaust pipe (13) more slowly, and the power of the electric heating wire (18) is increased, thereby increasing the pressure and temperature inside the treatment box (1) and reducing the oxygen content in the treated water.

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