Intelligent ultrasonic deaerator for boiler feed water treatment

Abstract

The application relates to an intelligent ultrasonic deaerator for boiler feed water treatment, belonging to the field of water deaeration, which comprises a rack, the rack is in a cylindrical shape, a plurality of deaeration cylinders are distributed in the periphery of the inside of the rack, a water inlet pipe and a water outlet pipe with valves are respectively connected to the side wall and the bottom of the deaeration cylinder, an ultrasonic wave generator is arranged near the bottom in the cylinder, the top of the cylinder is open and is slidably connected to a piston cylinder, the bottom of the piston cylinder is provided with a through hole with a one-way valve assembly, and a driving mechanism for driving the piston cylinder to vertically reciprocate is arranged in the rack. The specific structure of the one-way valve assembly and the driving mechanism and a valve assembly are further included. The application combines ultrasonic cavitation oxygen precipitation and negative pressure air extraction deaeration, can significantly reduce the dissolved oxygen content in water, has fast deaeration speed and stable effect, can realize deep deaeration, is a physical mode in the whole process, has no heat source consumption and no reagent addition, is high-efficiency, environment-friendly, and low in operation cost, and simultaneously has good sealing, motion stability and water inlet and water outlet convenience.

Description

Technical Field

[0001] This application relates to the field of water deoxygenation technology, and in particular to an intelligent ultrasonic deoxygenator for boiler feedwater treatment. Background Technology

[0002] As core power equipment in the power, chemical, heating, and industrial production sectors, boilers' feedwater quality directly determines their operational safety, thermal efficiency, and service life. Dissolved oxygen in feedwater is a major cause of metal corrosion in thermal systems. Under high temperature and pressure conditions, dissolved oxygen reacts with the boiler tube walls, economizers, feedwater pipelines, and other metal structures to form electrochemical corrosion, leading to pitting, thinning, and perforation of the tube walls. Corrosion products easily deposit on heated surfaces, forming iron scale with extremely poor thermal conductivity, further exacerbating local overheating and corrosion rates. In severe cases, this can cause tube rupture, system shutdown, and other safety accidents, significantly shortening the equipment's service life. Therefore, efficient deoxygenation of boiler feedwater is a necessary procedure to ensure the safe and stable operation of boiler systems.

[0003] Currently, industrial boiler feedwater deoxygenation is still dominated by thermal deoxygenation and chemical deoxygenation technologies. Thermal deoxygenation follows Henry's Law, heating the feedwater to saturation temperature by introducing high-temperature steam to reduce gas solubility and achieve deoxygenation. This method requires a continuous consumption of large amounts of high-grade steam, resulting in high self-consumption of steam and significantly increasing system energy consumption and operating costs. Chemical deoxygenation achieves deoxygenation by adding deoxygenating agents such as sodium sulfite and hydrazine to react with dissolved oxygen. This method increases the salinity of the water, increasing boiler blowdown rate and heat loss. The reagents are expensive, the storage and dosing process is complex, and there are safety hazards such as toxicity and corrosiveness. The reaction efficiency is greatly affected by temperature and water quality, making precise control difficult.

[0004] Existing boiler feedwater deoxygenation technologies generally suffer from common defects such as high energy consumption, low efficiency, and high operating costs. As industrial boilers are upgraded to larger, higher-pressure, more intelligent, and greener models, the market urgently needs a new type of deoxygenation technology that consumes no heat source, requires no chemical additives, is highly efficient and environmentally friendly, has low operating costs, and can be intelligently controlled, in order to solve the inherent shortcomings of traditional deoxygenation methods and improve the safety and economy of boiler systems. Summary of the Invention

[0005] In order to achieve a new type of deoxygenation technology that consumes no heat source, requires no chemical additives, is highly efficient and environmentally friendly, and has low operating costs, and to adapt to the upgrading of industrial boilers towards larger scale, higher pressure, intelligence and greenness, this application provides an intelligent ultrasonic deaerator for boiler feedwater treatment.

[0006] The intelligent ultrasonic deaerator for boiler feedwater treatment provided in this application adopts the following technical solution: An intelligent ultrasonic deaerator for boiler feedwater treatment includes a frame with multiple identical deaerator cylinders inside. Each deaerator cylinder has an inlet pipe connected to its side wall and an outlet pipe connected to its bottom. Inlet and outlet pipes are equipped with inlet and outlet valves, respectively. An ultrasonic generator is located near the bottom of each deaerator cylinder to generate high-frequency mechanical vibrations, producing microbubbles in the water and driving the rapid release of dissolved oxygen. The top of each deaerator cylinder is open, and a piston cylinder is slidably connected inside. The outer diameter of the piston cylinder is the same as the inner diameter of the deaerator cylinder. The bottom of the piston cylinder is closed, while the top is open. A through hole is located at the center of the bottom of the piston cylinder, and a one-way valve assembly is located at the through hole. A drive mechanism is installed within the frame to drive the piston cylinder to reciprocate vertically within the deaerator cylinder.

[0007] By adopting the above technical solution, before feeding water into the boiler, the user introduces water into the deaerator. The ultrasonic generator inside the deaerator generates microbubbles in the liquid using high-frequency sound waves, driving dissolved oxygen to quickly precipitate, float, and be discharged. Then, the driving mechanism drives the piston cylinder to move upward, drawing air out through the piston cylinder. This increases the volume and decreases the pressure inside the deaerator, reducing the solubility of oxygen in the water and making it easier for oxygen to escape. The one-way valve assembly closes. When the piston cylinder moves downward, the volume inside the deaerator decreases and the pressure increases. At this time, the one-way valve assembly opens the through hole, allowing the oxygen precipitated by the ultrasonic waves to flow out through the through hole, thereby reducing the oxygen in the water. This device combines ultrasonic cavitation oxygen evolution with negative pressure suction deaeration. Under the dual action, it can significantly reduce the dissolved oxygen content in the water. It has a fast deaeration speed, stable effect, and can achieve deep deaeration. Moreover, the entire process is physical, with no heat source consumption, no chemical addition, high efficiency, environmental protection, and low operating cost.

[0008] Optionally, the one-way valve assembly includes a fixed cylinder fixedly connected to the bottom of the piston cylinder. The fixed cylinder has open ends. A bracket is fixedly connected to the top of the fixed cylinder. A guide post is slidably connected to the bracket. A baffle is fixedly connected to the bottom of the guide post. The baffle is used to open and close the through hole. A return spring is sleeved on the guide post. The return spring is located between the baffle and the bracket.

[0009] By adopting the above technical solution, when the driving mechanism drives the piston cylinder to move upward, the pressure inside the deaerator cylinder is lower than the pressure inside the piston cylinder, thus releasing oxygen and reducing the process of oxygen dissolving in water. At this time, the baffle closes the through hole. When the piston cylinder moves downward, the volume of the piston cylinder decreases and the pressure increases, pushing the baffle to compress the return spring and open the through hole, allowing the oxygen inside the deaerator cylinder to enter the frame. During the vertical reciprocating motion of the piston cylinder, oxygen is released and discharged outward.

[0010] Optionally, the drive mechanism includes a fixed plate fixedly connected to the frame, a drive motor fixedly connected to the fixed plate, an output shaft of the drive motor extending out of the fixed plate, a fixed cylinder fixedly connected to the output shaft, a positioning cylinder fixedly connected to the fixed cylinder, a power plate fixedly connected to the positioning cylinder, the power plate being inclined relative to the fixed plate, and a push rod fixedly connected to the top of the piston cylinder, the push rod being slidably connected to the bottom of the power plate.

[0011] By adopting the above technical solution, when the user uses the device, the drive motor drives the power plate to rotate. When the lowest point of the power plate rotates toward the push rod, it pushes the push rod downward, which in turn pushes the piston cylinder downward. When the highest point of the power plate rotates toward the push rod, it drives the push rod upward, which in turn drives the piston cylinder upward. This process drives each piston cylinder to move vertically back and forth within the deaerator, thus realizing the process of oxygen release and oxygen discharge.

[0012] Optionally, a rotating ball is connected to the top of the top rod, and a guide groove is provided circumferentially at the bottom of the power plate. The rotating ball is engaged in the guide groove and can slide within the guide groove.

[0013] By adopting the above technical solution, when there are machining or assembly deviations between the push rod and the power plate during use, the ball joint can freely adjust the angle, automatically compensate for coaxiality and perpendicularity errors, avoid jamming, and has a large ball contact area and uniform force distribution. During the sliding of the guide groove and the swinging of the connecting rod, the frictional resistance is small, the movement is smooth, the noise is low, and the wear is small. The force plate and the power plate are inclined structures, the push rod makes vertical reciprocating motion, and the rotating ball rotates and slides in the guide groove. It can simultaneously adapt to axial, radial, and deflection multi-directional movements without generating additional bending moments and stresses, thus improving the structural reliability and service life.

[0014] Optionally, the top ball of the push rod is hinged to a connecting rod, and the end of the connecting rod away from the push rod is hinged to the rotating ball.

[0015] By adopting the above technical solution, when the user uses the ball joint between the connecting rod and the push rod, and between the connecting rod and the power plate, it can adaptively compensate for installation and movement deviations, reduce friction and stress, make the reciprocating motion of the push rod and the piston cylinder smoother and more stable, avoid mechanism jamming, and improve the reliability and service life of the device.

[0016] Optionally, a sealing gasket is provided on the outer wall of the piston cylinder. The sealing gasket is located near the top of the piston cylinder, and a notch is provided on the top of the sealing gasket. The notch facilitates the entry of air into the notch, making the two sides of the sealing gasket fit more tightly with the piston cylinder and the deaerator cylinder.

[0017] By adopting the above technical solution, when the piston cylinder moves vertically along the inner wall of the deaerator cylinder, outside air enters the notch groove. The air pressure causes the two sides of the sealing gasket to tightly adhere to the outer wall of the piston cylinder and the inner wall of the deaerator cylinder, respectively, which enhances the sealing effect, reduces gas leakage between the pressure chamber and the regulating chamber, ensures the stable establishment of negative pressure in the deaerator cylinder, and improves the efficiency of air extraction and deaeration.

[0018] Optionally, a valve assembly is provided on the fixed cylinder; the valve assembly includes a drive cylinder rotatably connected to the bracket, a positioning ring fixedly connected to the outer wall of the drive cylinder, a limit ring fixedly connected to the top of the bracket, the positioning ring being rotatably connected to the limit ring, a threaded opening on the inner wall of the drive cylinder, a sliding cylinder being threadedly connected to the drive cylinder, the end of the guide post extending into the sliding cylinder and fixedly connected to an anti-detachment disc, a guide rod fixedly connected to the top of the sliding cylinder, the guide rod being a polygonal prism, a limit groove being opened at the bottom of the top rod, the guide rod being inserted into the limit groove and being able to slide within the limit groove, and a power assembly for driving the drive cylinder to rotate is provided on the bracket.

[0019] By adopting the above technical solution, when the user needs to add water, the drive motor drives the piston cylinder to move upward. At this time, the pressure inside the deaerator cylinder is less than that inside the piston cylinder, and the baffle closes the through hole. The power component drives the drive cylinder to rotate, causing the sliding cylinder inside the drive cylinder to slide upward. This causes the drive cylinder to move the guide column upward, which in turn moves the baffle upward, opening the through hole. Outside air can enter the deaerator cylinder through the top opening and the through hole, causing the pressure inside the deaerator cylinder to rise. Water in the inlet pipe flows smoothly into the cylinder under atmospheric pressure, rather than simply relying on negative pressure to draw water in. When draining water, that is, when guiding the deaerated water to the boiler pipe, the drive motor drives the piston cylinder to move downward. At this time, the pressure inside the deaerator cylinder is greater than that inside the piston cylinder, and the baffle opens the through hole. The power component drives the guide column downward to close the through hole, forming a sealed space inside the deaerator cylinder. When the piston cylinder is pressed down, the pressure continues to rise, and the water is forcefully discharged from the outlet pipe, quickly draining the water from the deaerator cylinder. The valve assembly facilitates the water inlet and outlet of the deaerator cylinder.

[0020] Optionally, the power assembly includes a power motor fixedly connected to the bracket, a gear fixedly connected to the output shaft of the power motor, and an external gear ring fixedly connected to the outside of the positioning ring, with the gear and the external gear ring meshing.

[0021] By adopting the above technical solution, when the user uses the power motor, the gear is driven to rotate in the forward or reverse direction, which in turn drives the drive cylinder to rotate in the forward or reverse direction through the external gear ring. This causes the sliding cylinder to slide vertically inside the drive cylinder, which in turn causes the baffle to move vertically, thus realizing the automatic opening or closing of the through hole.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A system comprises multiple identical deaerators housed within a frame. An ultrasonic generator is positioned near the bottom of each deaerator to produce high-frequency mechanical vibrations, generating microbubbles in the water and driving the rapid release of dissolved oxygen. The top of each deaerator is open, and a piston cylinder is slidably connected inside. The piston cylinder has the same outer diameter as the inner diameter of the deaerator, with a closed bottom and an open top. A through-hole is located at the center of the bottom of the piston cylinder, and a one-way valve assembly is positioned at the through-hole. A drive motor within the frame propels the piston cylinder vertically reciprocating within the deaerator. The ultrasonic generator inside the deaerator generates microbubbles in the liquid using high-frequency sound waves, driving the rapid release, rise, and discharge of dissolved oxygen. Then, the piston cylinder is driven upward by the drive motor, and air is drawn out through the piston cylinder. The volume inside the deoxygenation cylinder increases and the pressure decreases, which reduces the solubility of oxygen in the water and makes it easier for oxygen to escape from the water. The one-way valve assembly closes. When the piston cylinder moves downward, the volume inside the deoxygenation cylinder decreases and the pressure increases. At this time, the one-way valve assembly opens the through hole, allowing the oxygen released by the ultrasonic waves to flow out through the through hole, thereby reducing the oxygen in the water. This device combines ultrasonic cavitation oxygen release with negative pressure air extraction and oxygen discharge. Under the dual action, it can significantly reduce the dissolved oxygen content in the water. It has a fast deoxygenation speed, stable effect, and can achieve deep deoxygenation. Moreover, the whole process is physical, with no heat source consumption, no chemical addition, high efficiency and environmental protection, and low operating cost. 2. A fixed cylinder is installed at the through hole position at the bottom of the piston cylinder. The two ends of the fixed cylinder are open. A guide post is slidably connected inside the fixed cylinder. A baffle is fixedly connected to the bottom of the guide post. The baffle is used to open and close the through hole. A drive cylinder is rotatably connected inside the fixed cylinder. A positioning ring is fixedly connected to the outer wall of the drive cylinder. A limit ring is fixedly connected to the top of the bracket. The positioning ring is rotatably connected to the limit ring. The inner wall of the drive cylinder is threaded. A sliding cylinder is threaded inside the drive cylinder. The end of the guide post extends into the sliding cylinder and is fixedly connected to an anti-detachment disc. A guide rod is fixedly connected to the top of the sliding cylinder. The guide rod is polygonal. A limit groove is opened at the bottom of the guide rod. The guide rod is inserted into the limit groove and can slide in the limit groove. A power motor is installed on the bracket to drive the drive cylinder to rotate. When water needs to be introduced into the cylinder, the drive motor... When the piston cylinder moves upward, the pressure inside the deaerator cylinder is lower than that inside the piston cylinder. The baffle closes the through-hole, and the motor drives the drive cylinder to rotate, opening the through-hole. Outside air can enter the deaerator cylinder through the top opening and through-hole, causing the pressure inside the deaerator cylinder to rise. Water in the inlet pipe flows smoothly into the cylinder under atmospheric pressure, not simply relying on negative pressure for water intake. When draining water, i.e., guiding the deaerated water to the boiler pipes, the drive motor drives the piston cylinder downward. At this time, the pressure inside the deaerator cylinder is greater than that inside the piston cylinder, and the baffle opens the through-hole. The motor then drives the guide column downward to close the through-hole, creating a sealed space inside the deaerator cylinder. As the piston cylinder presses down, the pressure continues to rise, and water is forcefully discharged from the outlet pipe, quickly draining the water from the deaerator cylinder, facilitating water intake and drainage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is a structural diagram of the deaerator cylinder, piston cylinder, and drive mechanism; Figure 4 yes Figure 2 Enlarged view of part A; Figure 5 yes Figure 2 Enlarged view of part B; Figure 6 yes Figure 5 Enlarged view of part C.

[0024] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Deaerator cylinder; 21. Inlet pipe; 22. Inlet valve; 23. Outlet pipe; 24. Outlet valve; 25. Through hole; 26. Sealing gasket; 261. Notch groove; 3. Ultrasonic generator; 4. Piston cylinder; 5. Drive mechanism; 51. Fixed plate; 52. Drive motor; 53. Positioning cylinder; 54. Power plate; 541. Guide groove; 55. Push rod; 551. Rotating ball; 552. Connecting rod; 6. One-way valve assembly; 61. Fixed cylinder; 62. Bracket; 63. Guide column; 631. Anti-detachment plate; 64. Baffle; 65. Return spring; 7. Valve assembly; 71. Drive cylinder; 72. Positioning ring; 721. External gear ring; 73. Limiting ring; 74. Sliding cylinder; 75. Guide rod; 76. Limiting groove; 77. Power motor; 771. Gear. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of 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 according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0028] This application discloses an intelligent ultrasonic deaerator for boiler feedwater treatment, referring to... Figure 1 and Figure 2The present application provides an intelligent ultrasonic deaerator for boiler feedwater treatment, comprising a frame 1, deaeration cylinders 2, an ultrasonic generator 3, a piston cylinder 4, a drive mechanism 5, a one-way valve assembly 6, and a valve assembly 7. Multiple deaeration cylinders 2 are circumferentially distributed within the frame 1. The ultrasonic generator 3 is positioned near the bottom of each deaeration cylinder 2. The piston cylinder 4 is slidably connected within the deaeration cylinder 2. The drive mechanism 5, located within the frame 1, drives the piston cylinder 4 to reciprocate vertically within the deaeration cylinder 2. The one-way valve assembly 6 is located at the through-hole 25 at the bottom of the piston cylinder 4. The valve assembly 7 is mounted on a fixed cylinder 61. This structural combination, through the integration of ultrasonic cavitation oxygen evolution and negative pressure suction deaeration, significantly reduces the dissolved oxygen content in the water. It offers rapid and stable deaeration, achieving deep deaeration. Furthermore, the entire process is physical, requiring no heat source consumption, no chemical addition, high efficiency, environmental friendliness, and low operating costs.

[0029] Specifically, the frame 1 is cylindrical, with a vent pipe fixedly connected to its top, providing support and installation space for the entire deaerator. It can be made of metal, such as stainless steel, offering good strength and corrosion resistance. The deaerator cylinder 2 has an inlet pipe 21 connected to its side wall and an outlet pipe 23 connected to its bottom. Inlet valve 22 and outlet valve 24 are respectively installed on the inlet pipe 21 and outlet pipe 23. The inlet pipe 21 can be a standard water pipe, and the inlet valve 22 and outlet valve 24 can be common ball valves or butterfly valves for easy control of water flow. An ultrasonic generator 3 is located near the bottom inside the deaerator cylinder 2. This generator produces high-frequency mechanical vibrations, generating microbubbles in the water and driving the rapid release of dissolved oxygen. The ultrasonic generator 3 can be a piezoelectric ultrasonic generator, converting electrical energy into mechanical energy to produce ultrasonic waves.

[0030] Reference Figure 3 and Figure 4The drive mechanism 5 includes a fixed plate 51 fixedly connected to the frame 1. The fixed plate 51 can be a circular metal plate, fixed to the frame 1 by bolts or other means. A drive motor 52 is fixedly connected to the fixed plate 51. The drive motor 52 can be a common AC motor, providing power to the entire drive mechanism 5. The output shaft of the drive motor 52 extends out of the fixed plate 51, and a fixed cylinder 61 is fixedly connected to the output shaft. The fixed cylinder 61 can be a metal cylinder, used to transmit power. A positioning cylinder 53 is fixedly connected to the fixed cylinder 61. The positioning cylinder 53 can be a metal annular structure, serving a positioning and support function. A power plate 54 is fixedly connected to the positioning cylinder 53, and the power plate 54 is inclined relative to the fixed plate 51. A push rod 55 is fixedly connected to the top of the piston cylinder 4. The push rod 55 can be a metal rod, slidably connected to the bottom of the power plate 54. The drive motor 52 drives the power plate 54 to rotate. When the lowest point of the power plate 54 rotates toward the push rod 55, it pushes the push rod 55 to move downward, which in turn pushes the piston cylinder 4 to move downward. When the highest point of the power plate 54 rotates toward the push rod 55, it drives the push rod 55 to move upward, which in turn drives the piston cylinder 4 to move upward. This process is repeated to drive each piston cylinder 4 to move vertically back and forth within the deaerator cylinder 2.

[0031] A rotating ball 551 is connected to the top of the push rod 55. A guide groove 541 is circumferentially formed on the bottom of the power disk 54. The rotating ball 551 is engaged within the guide groove 541 and can slide within it. The rotating ball 551 can be a metal ball with good wear resistance and smoothness. A connecting rod 552 is ball-hinged to the top of the push rod 55. The end of the connecting rod 552 away from the push rod 55 is ball-hinged with the rotating ball 551. The connecting rod 552 can be a metal rod. The ball-hinged connection allows for adaptive compensation of installation and movement deviations, reduces friction and stress, and makes the reciprocating motion of the push rod 55 and the piston cylinder 4 smoother and more stable, preventing mechanism jamming and improving the reliability and service life of the device.

[0032] A sealing gasket 26 is fitted onto the outer wall of the piston cylinder 4. The sealing gasket 26 is located near the top of the piston cylinder 4, and a notch 261 is formed at the top of the sealing gasket 26. The sealing gasket 26 can be made of rubber, which has good elasticity and sealing performance. During the vertical movement of the piston cylinder 4 along the inner wall of the deaerator cylinder 2, outside air enters the notch 261. The air pressure causes the two sides of the sealing gasket 26 to tightly adhere to the outer wall of the piston cylinder 4 and the inner wall of the deaerator cylinder 2, respectively, enhancing the sealing effect, reducing gas leakage between the pressure chamber and the regulating chamber, ensuring the stable establishment of negative pressure in the deaerator cylinder 2, and improving the deaeration efficiency.

[0033] Reference Figure 5 and Figure 6The piston cylinder 4 has the same outer diameter as the deaerator cylinder 2, is closed at the bottom and open at the top, with a through hole 25 at the center of the bottom. The piston cylinder 4 can be made of plastic or metal, possessing a certain strength and sealing performance. A one-way valve assembly 6 is installed at the through hole 25 on the piston cylinder 4. The one-way valve assembly 6 includes a fixed cylinder 61 fixedly connected to the bottom of the piston cylinder 4, with both ends of the fixed cylinder 61 open and concentrically positioned with the through hole 25. A bracket 62 is fixedly connected to the top of the fixed cylinder 61. The bracket 62 can be a metal frame structure, serving as support and fixation. A guide post 63 is slidably connected to the bracket 62. The guide post 63 can be a cylindrical metal rod, capable of sliding freely on the bracket 62. A baffle 64 is fixedly connected to the bottom of the guide post 63. The baffle 64 can be a circular metal plate, used to control the opening and closing of the through hole 25. A return spring 65 is fitted on the guide post 63. The return spring 65 is located between the baffle 64 and the bracket 62. When the piston cylinder 4 moves upward, the pressure inside the deaerator cylinder 2 is less than the pressure inside the piston cylinder 4. Under the action of the return spring 65, the baffle 64 closes the through hole 25. When the piston cylinder 4 moves downward, the volume of the piston cylinder 4 decreases and the pressure increases, pushing the baffle 64 to compress the return spring 65 and open the through hole 25.

[0034] A valve assembly 7 is mounted on the fixed cylinder 61. The valve assembly 7 includes a drive cylinder 71 rotatably connected to the bracket 62. A positioning ring 72 is fixedly connected to the outer wall of the drive cylinder 71, and a limit ring 73 is fixedly connected to the top of the bracket 62. The positioning ring 72 is rotatably connected to the limit ring 73. The inner wall of the drive cylinder 71 is threaded, and a sliding cylinder 74 is threadedly connected to the drive cylinder 71. The end of the guide post 63 extends into the sliding cylinder 74 and is fixedly connected to an anti-detachment disc 631. A guide rod 75 is fixedly connected to the top of the sliding cylinder 74. The guide rod 75 is a polygonal prism, and a limit groove 76 is formed at the bottom of the top rod 55. The guide rod 75 is inserted into the limit groove 76 and can slide within the limit groove 76. A power motor 77 is fixedly connected to the bracket 62. A gear 771 is fixedly connected to the output shaft of the power motor 77. An external gear ring 721 is fixedly connected to the outside of the positioning ring 72. The gear 771 and the external gear ring 721 mesh. When water needs to be introduced, the drive motor 52 drives the piston cylinder 4 to move upward. At this time, the pressure inside the deaerator cylinder 2 is lower than the pressure inside the piston cylinder 4, and the baffle 64 closes the through hole 25. The power motor 77 drives the drive cylinder 71 to rotate, causing the sliding cylinder 74 inside the drive cylinder 71 to slide upward. This causes the drive cylinder 71 to drive the guide column 63 to move upward, which in turn drives the baffle 64 to move upward, opening the through hole 25. Outside air can enter the deaerator cylinder 2 through the top opening and the through hole 25, causing the pressure inside the deaerator cylinder 2 to rise again, and the water inlet pipe... Water in cylinder 21 flows smoothly into the tank under atmospheric pressure. When water is drained outward, that is, when the deoxygenated water is guided to the boiler pipe, the drive motor 52 drives the piston cylinder 4 to move downward. At this time, the pressure in the deoxygenation cylinder 2 is greater than the pressure in the piston cylinder 4. The baffle 64 opens the through hole 25, and the control motor 77 drives the guide column 63 to move downward to close the through hole 25. A sealed space is formed in the deoxygenation cylinder 2. When the piston cylinder 4 is pressed down, the pressure continues to rise, and the water is forcefully discharged from the outlet pipe 23, quickly discharging the water in the deoxygenation cylinder 2 outward.

[0035] The implementation principle of this embodiment is as follows: This intelligent ultrasonic deaerator for boiler feedwater treatment combines ultrasonic cavitation oxygen evolution and negative pressure suction deaeration. The high-frequency mechanical vibration generated by the ultrasonic generator 3 produces microbubbles in the water, driving the rapid precipitation of dissolved oxygen. The drive mechanism 5 drives the piston cylinder 4 to reciprocate vertically within the deaeration cylinder 2. When the piston cylinder 4 moves upward, the pressure inside the deaeration cylinder 2 decreases, the oxygen solubility decreases, and more oxygen is released from the water, closing the one-way valve assembly 6. When the piston cylinder 4 moves downward, the pressure inside the deaeration cylinder 2 increases, opening the one-way valve assembly 6 and discharging the released oxygen. The valve assembly 7 facilitates the water inlet and outlet operations of the deaeration cylinder 2. This combined approach avoids the shortcomings of traditional thermal and chemical deaeration, requiring no heat source consumption or reagent addition. It is highly efficient, environmentally friendly, and has low operating costs, significantly improving the deaeration effect and efficiency of boiler feedwater and ensuring the safe and stable operation of the boiler system.

[0036] 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. An intelligent ultrasonic deaerator for boiler feedwater treatment, characterized in that: Includes a frame (1), inside which are installed multiple deaerators (2) with the same structure. The side wall of the deaerator (2) is connected to a water inlet pipe (21), and the bottom is connected to a water outlet pipe (23). The water inlet pipe (21) and the water outlet pipe (23) are respectively equipped with a water inlet valve (22) and a water outlet valve (24). An ultrasonic generator (3) is installed near the bottom of the deaerator (2). The ultrasonic generator (3) is used to generate high-frequency mechanical vibration, generate microbubbles in the water and drive dissolved oxygen to be released quickly. The top of the deaerator cylinder (2) is open. A piston cylinder (4) is slidably connected inside the deaerator cylinder (2). The outer diameter of the piston cylinder (4) is the same as the inner diameter of the deaerator cylinder (2). The bottom of the piston cylinder (4) is closed and the top is open. A through hole (25) is opened at the center of the bottom of the piston cylinder (4). A one-way valve assembly (6) is set at the position of the through hole (25) on the piston cylinder (4). A drive mechanism (5) is set inside the frame (1) to drive the piston cylinder (4) to move vertically reciprocally inside the deaerator cylinder (2).

2. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 1, characterized in that: The one-way valve assembly (6) includes a fixed cylinder (61) fixedly connected to the bottom of the piston cylinder (4). The fixed cylinder (61) is open at both ends. A bracket (62) is fixedly connected to the top of the fixed cylinder (61). A guide post (63) is slidably connected to the bracket (62). A baffle (64) is fixedly connected to the bottom of the guide post (63). The baffle (64) is used to open and close the through hole (25). A return spring (65) is sleeved on the guide post (63). The return spring (65) is located between the baffle (64) and the bracket (62).

3. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 1, characterized in that: The drive mechanism (5) includes a fixed plate (51) fixedly connected to the frame (1), a drive motor (52) fixedly connected to the fixed plate (51), the output shaft of the drive motor (52) extends out of the fixed plate (51), and a fixed cylinder (61) is fixedly connected to the output shaft. A positioning cylinder (53) is fixedly connected to the fixed cylinder (61), and a power plate (54) is fixedly connected to the positioning cylinder (53). The power plate (54) is inclined relative to the fixed plate (51), and a push rod (55) is fixedly connected to the top of the piston cylinder (4). The push rod (55) is slidably connected to the bottom of the power plate (54).

4. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 3, characterized in that: The top of the top rod (55) is connected to a rotating ball (551), and the bottom of the power disk (54) is provided with a guide groove (541) in the circumferential direction. The rotating ball (551) is engaged in the guide groove (541) and can slide in the guide groove (541).

5. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 4, characterized in that: The top of the top rod (55) is ball-hung to a connecting rod (552), and the end of the connecting rod (552) away from the top rod (55) is ball-hung to a rotating ball (551).

6. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 1, characterized in that: A sealing gasket (26) is fitted on the outer wall of the piston cylinder (4). The sealing gasket (26) is located near the top of the piston cylinder (4). A notch (261) is provided on the top of the sealing gasket (26). The notch (261) facilitates the entry of air into the notch (261), making the two sides of the sealing gasket (26) fit more tightly with the piston cylinder (4) and the deaerator cylinder (2).

7. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 1, characterized in that: A valve assembly (7) is provided on the fixed cylinder (61); The valve assembly (7) includes a drive cylinder (71) rotatably connected to a bracket (62). A positioning ring (72) is fixedly connected to the outer wall of the drive cylinder (71). A limit ring (73) is fixedly connected to the top of the bracket (62). The positioning ring (72) is rotatably connected to the limit ring (73). The inner wall of the drive cylinder (71) is threaded. A sliding cylinder (74) is threadedly connected to the drive cylinder (71). The end of the guide post (63) extends into the sliding cylinder (74) and is fixedly connected to an anti-detachment disc (631). A guide rod (75) is fixedly connected to the top of the sliding cylinder (74). The guide rod (75) is a polygonal prism. A limit groove (76) is opened at the bottom of the top rod (55). The guide rod (75) is inserted into the limit groove (76) and can slide in the limit groove (76). A power assembly for driving the drive cylinder (71) to rotate is provided on the bracket (62).

8. The intelligent ultrasonic deaerator for boiler feedwater treatment according to claim 7, characterized in that: The power assembly includes a power motor (77) fixedly connected to the bracket (62), a gear (771) fixedly connected to the output shaft of the power motor (77), and an external gear ring (721) fixedly connected to the outside of the positioning ring (72). The gear (771) and the external gear ring (721) mesh.

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