Steam jet deoxygenization multi-parameter measurement and visualization test device and steam jet deoxygenization multi-parameter measurement and visualization test method

Abstract

The invention belongs to the field of thermal hydraulic power, and provides a steam jet deoxygenation multi-parameter measurement and visual test device and method aiming at the problem that a special test system capable of synchronously measuring a multi-physical field process is lacked in the prior art. The device comprises a deaerator body, and a steam guide assembly, a water inlet assembly, a water outlet assembly and an exhaust port which are integrated in the deaerator body, and is equipped with a multi-parameter measurement system. The steam guide assembly realizes uniform jet flow through the axial steam guide pipe and the symmetrical steam nozzles; the water inlet assembly forms stable water flow through cooperation of the splitter plate and the guide plate. The measuring system integrates a temperature sensor, a dissolved oxygen sensor, a vibration sensor, a noise sensor and a visual window, and can synchronously monitor a temperature field, dissolved oxygen change, a gas-liquid two-phase form, equipment vibration and noise. According to the invention, different working conditions can be simulated, the influence of flow and structure parameters on the deoxidization efficiency can be researched, temperature rise and dissolved oxygen data can be acquired in real time, bubble dynamics and operation stability can be observed synchronously, and an experimental platform and data support are provided for revealing a deoxidization mechanism and optimizing equipment.

Description

Technical Field

[0001] This invention belongs to the field of thermal hydraulics research, and specifically relates to a test device for a novel deaerator. Background Technology

[0002] Steam jet deoxygenation technology, as a novel thermal deoxygenation method, achieves efficient mixing and contact between the gas and liquid phases by directly injecting steam into condensate in the form of a jet. During the process of steam entrainment, the condensate rapidly absorbs heat, and its temperature rises rapidly to the saturation temperature, causing dissolved oxygen in the water to precipitate out due to a sharp drop in solubility.

[0003] To thoroughly investigate the deoxygenation mechanism of this technology, systematic experimental analysis of its internal temperature field, phase change behavior, and oxygen evolution process is necessary. However, despite the variety of existing steam jet devices, there is a general lack of dedicated test rigs capable of accurately evaluating their deoxygenation performance, particularly a lack of real-time monitoring methods for the evolution of non-condensable gases. This lack of a comprehensive testing system severely restricts the optimization and engineering application of this technology.

[0004] Therefore, this study designed an experimental device based on steam jet deoxygenation, aiming to provide reliable experimental data and design basis for the development and performance improvement of high-efficiency deaerators. Summary of the Invention

[0005] To address the lack of dedicated testing systems and the difficulty in simultaneously measuring multi-physics processes in existing deoxygenation technologies, this invention proposes a specialized testing device for steam jet deoxygenation processes. This device can accurately measure and analyze the temperature field distribution, phase change process, and oxygen evolution behavior inside the deaerator. By constructing a controllable and observable experimental system, reliable data support and design basis are provided for the optimization of steam jet deoxygenation technology and the development of high-efficiency deaerators.

[0006] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a steam jet deoxygenation multi-parameter measurement and visualization test device, the device comprising a deaerator body, a gas guiding component, a water inlet component, an exhaust port, a water outlet component, and a measurement component; The water inlet assembly, water outlet assembly, and exhaust port are located inside the deaerator body; The inlet water assembly and the outlet water assembly are located at the top and bottom of the deaerator body, respectively; The exhaust port is located on the upper part of the side of the deaerator body and is used to discharge the released gas. The air guiding assembly includes an air guiding pipe and a steam nozzle. The air guiding pipe passes through the middle of the deaerator body along the axial direction and extends to the lower region of the water inlet assembly, and is connected to the steam nozzle through a bend. The measuring components are distributed on the surface of the deaerator body and are used to monitor the temperature, flow, noise, vibration and dissolved oxygen levels inside the deaerator.

[0007] Furthermore, the aforementioned water inlet assembly includes a condensate inlet, a baffle plate, and a diverter plate; The condensate inlet is located at the top center of the deaerator body and is used to introduce condensate to be deaerated; The flow divider is located directly below the condensate inlet and has two rows of symmetrically distributed circular holes to achieve uniform water flow distribution. The guide plate is located below the flow divider and is arranged symmetrically. Its transverse centerline coincides with the centerline of the air duct, and it is used to guide the condensate to flow along a set path.

[0008] Furthermore, the lateral arrangement of the aforementioned air duct coincides with the centerline of the guide plate, while its axial position is located directly below the splitter plate.

[0009] Furthermore, the steam nozzles are arranged symmetrically and connected to the steam guide pipe via a horizontal pipeline. The openings face the left and right sides and are located in the area below the guide plate to ensure that the steam jet can act evenly on the condensate.

[0010] Furthermore, the above-mentioned water outlet component includes two deoxygenated water outlets, which are respectively located on both sides of the bottom of the deaerator body, and the installation height of each deoxygenated water outlet from the bottom of the deaerator body is the same.

[0011] Furthermore, the aforementioned measurement components include temperature measuring points, dissolved oxygen measuring points, noise measuring devices, vibration measuring devices, and a visual glass window.

[0012] Furthermore, the aforementioned temperature measuring points include multiple high-precision temperature sensors arranged on the inner wall of the deaerator body, forming a measuring point matrix. The measuring point matrix is ​​distributed in the inlet water area, the condensation heat exchange area, and the outlet water area, and is used to reflect the temperature rise curve of the condensate from its initial state to the saturation temperature.

[0013] Furthermore, the dissolved oxygen meter measuring points form a measuring point matrix, which is distributed at the inlet and outlet positions of the deaerator body and in the steam jet action zone, for continuous detection of dissolved oxygen content in the effluent; the dissolved oxygen meter measuring points are designed to withstand high temperatures and are equipped with a bypass sampling structure.

[0014] Furthermore, the aforementioned vibration measurement device is arranged on the outer wall of the deaerator body and at key structural connections to monitor vibration data caused by the steam jet; The noise measurement device is used to collect and analyze the noise signals generated during the deoxygenation process, and to comprehensively evaluate the system's operating status and acoustic performance in conjunction with vibration data. The visualization glass windows are high-strength pressure-resistant glass windows, and there are multiple of them, with their positions corresponding to the steam jet area, the condensation heat exchange area, and the deoxygenated water outlet area, respectively.

[0015] Secondly, the present invention also provides a deoxygenation method based on the steam jet deoxygenation multi-parameter measurement and visualization test device described above, the method comprising the following steps: S1: The condensate to be deoxygenated is introduced from the top of the deaerator and flows through the flow divider plate. The flow divider plate disperses the condensate into multiple fine streams through its symmetrically distributed circular hole structure on the upper part and makes it flow down mainly from both sides, so as to achieve the initial uniform distribution of liquid flow. Then, the condensate flows steadily downward along the set path under the guidance of the guide plate and enters the condensation heat exchange zone. S2: Heating steam is introduced axially from the middle of the deaerator and sprayed into the falling condensate water curtain in the form of a jet through steam nozzles that are symmetrically arranged in the horizontal direction in the condensation heat exchange zone; the steam jet forms a high-speed turbulence in the liquid, which has a strong shearing and disturbance effect on the condensate, forming a highly disturbed gas-liquid two-phase turbulent mixing zone. S3: In the gas-liquid two-phase turbulent mixing zone, the condensate is rapidly heated by the entrainment of steam, and the temperature rises to the saturation temperature; as the temperature rises, the dissolved oxygen in the water precipitates out due to the decrease in solubility, forming tiny oxygen bubbles; S4: The released oxygen bubbles move upward under the action of buoyancy, converge into the steam space at the top of the deaerator, and are finally continuously discharged from the system through the exhaust port located at the upper side of the deaerator. S5: The condensate from the heating and deoxygenation process is collected evenly on both sides of the bottom of the deaerator and discharged to obtain deoxygenated water. S6: During the deoxygenation process, the temperature of the condensate, the dissolved oxygen content in the deoxygenated water, the equipment vibration and operating noise are monitored in real time, and the internal vapor-liquid two-phase flow state is observed through a visual window.

[0016] The beneficial effects of this invention are as follows: (1) Possesses multi-condition simulation and analysis capabilities: By independently adjusting the flow rates of condensate and steam, this invention can simulate different operating conditions over a wide range, systematically study the influence of flow ratio on deoxygenation efficiency, establish a quantitative relationship between deoxygenation rate and flow ratio, and provide a reliable basis for operation optimization.

[0017] (2) Realize dynamic monitoring of the temperature field throughout the process: By arranging multiple high-precision temperature sensors in the water inlet zone, condensation heat exchange zone and water outlet zone, the present invention can obtain the temperature rise data of the condensate from the initial state to the saturated state in real time, and accurately reveal the temperature distribution characteristics and heat transfer law in the steam jet heating process.

[0018] (3) Support for synchronous visualization and quantitative measurement of oxygen evolution process: With the help of pressure-resistant window and high-speed camera system, the present invention can directly observe the generation, movement and aggregation behavior of bubbles; combined with continuous monitoring of high-temperature dissolved oxygen measuring points, it realizes the organic combination of observation and data acquisition, providing intuitive and quantitative support for revealing the deoxygenation mechanism.

[0019] (4) Provides controllable research methods for the influence of key structures: By adjusting structural parameters such as the orifice distribution of the flow divider plate, the number and arrangement of steam nozzles, this invention can systematically study the influence of internal components on fluid flow path, mixing characteristics and deoxygenation effect, providing experimental basis for deaerator structure optimization and performance improvement.

[0020] (5) Integrated vibration and noise monitoring function: By arranging vibration sensors on the outer wall of the deaerator and at key connections, and setting up a noise measurement device outside the device, the present invention can simultaneously collect structural vibration signals induced by steam jets and the spectrum of operating noise. Combined with data such as temperature and flow field, the system's operational stability, structural reliability and acoustic characteristics can be comprehensively evaluated, providing a basis for equipment condition diagnosis and low-noise optimization design. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a front view of the deaerator described in this invention; Figure 2 This is a side view of the deaerator described in this invention; Figure 3 This is a diagram showing the distribution of measuring points inside the deaerator described in this invention; Figure 4 This is a schematic diagram of the water inlet assembly structure described in this invention; Figure 5 This is a top view of the flow divider described in this invention.

[0023] Among them, 1-water inlet assembly, 1-1 condensate inlet, 1-2 baffle plate, 2-steam inlet, 3-deoxygenated water outlet, 4-exhaust port, 5-steam nozzle, 6-diverter plate, 7-visual window, 8-deaerator body. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0025] Example 1, Combination Figures 1 to 5 This embodiment addresses the problem of existing deoxygenation technologies lacking dedicated testing systems and making it difficult to simultaneously measure multi-physics processes. It proposes a multi-parameter measurement and visualization testing device for steam jet deoxygenation, such as… Figure 1 and Figure 2 As shown, the device mainly includes a deaerator body 8, an air guiding assembly, a water inlet assembly 1, an exhaust port 4, a water outlet assembly, and a measuring assembly; The water inlet assembly 1, water outlet assembly, and exhaust port 4 are located inside the deaerator body 8; the water inlet assembly 1 is located at the top of the deaerator; the water outlet assembly is located at the bottom of the deaerator; the exhaust port 4 is located on the upper part of the side of the deaerator body 8 and is used to discharge the released gas; the measuring components are distributed on the surface of the deaerator body 8 and are used to monitor the temperature, flow, noise, vibration, and dissolved oxygen content inside the deaerator; the air guiding assembly includes an air guiding pipe and a steam nozzle 5. The air guiding pipe passes through the middle of the deaerator body 8 axially and extends to the lower area of ​​the water inlet assembly 1, and is connected to the steam nozzle 5 through a bend.

[0026] Furthermore, such as Figure 4 As shown, the water inlet assembly 1 includes a condensate inlet 1-1, a guide plate 1-2, and a diversion plate 6. The condensate inlet 1-1 is located at the top center of the deaerator and is used to introduce condensate to be deaerated. The diversion plate 6 is located directly below the condensate inlet pipe. Figure 5 As shown, the upper part has two rows of symmetrically distributed round holes to achieve uniform distribution of water flow; the blocked water flow will flow naturally along the surface of the diverter plate to the non-perforated areas on both sides until it reaches the edge of the plate, and then slide down from both sides; the guide plates 1-2 are located below the diverter plate and are arranged symmetrically, with their transverse center line coinciding with the center line of the air guide pipe, and are used to guide the condensate to flow along the set path.

[0027] Furthermore, the lateral position of the gas guide pipe coincides with the center line of the guide plate 1-2, while its axial position is located directly below the splitter plate 6. The steam nozzle 5 is arranged symmetrically and connected to the gas guide pipe through a horizontal pipeline, with its opening facing the left and right sides, and located in the area below the guide plate 1-2 to ensure that the steam jet can act evenly on the condensate.

[0028] Furthermore, such as Figure 1As shown, the water outlet assembly includes two deoxygenated water outlets 3 on both sides. The deoxygenated water outlets 3 are located at the bottom of the deaerator and are distributed on both sides of the deaerator. The installation height of each outlet from the bottom of the deaerator body 8 is consistent to ensure uniform water output.

[0029] Furthermore, the measurement components include temperature measuring points, dissolved oxygen measuring points, noise measuring devices, vibration measuring devices, and a visual glass window.

[0030] Among them, such as Figure 3 As shown, multiple high-precision temperature sensors are arranged on the inner wall of the deaerator body to monitor the temperature changes of condensate at different stages in real time. The measuring point matrix is ​​mainly distributed in the inlet area, condensation heat exchange area, and outlet area, which can comprehensively reflect the temperature rise curve of condensate from the initial state to the saturation temperature.

[0031] The dissolved oxygen measurement point matrix is ​​mainly distributed at the inlet and outlet of the deaerator and in the steam jet action zone. It is used to continuously detect the dissolved oxygen content in the effluent. The measurement point adopts a high temperature resistant design and can be sampled by bypass to ensure that the oxygen concentration can still be measured stably and accurately in high temperature environment, thereby objectively evaluating the deoxygenation efficiency and stability of the deaerator.

[0032] Vibration measurement devices are installed on the outer wall of the deaerator body and at key structural connections to monitor vibrations caused by steam jets and assess equipment operational stability and structural reliability.

[0033] The noise measurement device is installed outside the deaerator to collect and analyze the noise signals generated during the deaeration process, and to comprehensively evaluate the system's operating status and acoustic performance in conjunction with vibration data.

[0034] Multiple high-strength, pressure-resistant glass viewing windows are installed on the side of the deaerator body, corresponding to the steam jet area, condensation heat exchange area, and deaerator outlet water area. Through these viewing windows, the dynamic processes such as the morphology of the vapor-liquid two-phase flow, bubble generation, and movement trajectory can be directly observed in conjunction with a high-speed camera system.

[0035] Example 2: This example provides a deoxygenation method using the steam jet deoxygenation multi-parameter measurement and visualization test device as described in Example 1. The method includes the following steps: S1. Condensate introduction and distribution steps: The condensate to be deaerated is introduced from the top of the deaerator, and it first flows through a flow divider plate. The flow divider plate disperses the condensate into multiple fine streams through its symmetrically distributed circular hole structure on the upper part, and makes it flow down mainly from both sides, so as to achieve the initial uniform distribution of liquid flow. Subsequently, the condensate flows steadily downward along a set path under the guidance of a guide plate, forming a water film or water curtain, and enters the condensation heat exchange zone. S2. Steam jet introduction and mixing step: Heating steam is introduced axially from the middle of the deaerator and sprayed into the falling condensate water curtain in the form of a jet through steam nozzles that are symmetrically arranged in the horizontal direction in the condensation heat exchange zone; the steam jet forms a high-speed turbulence in the liquid, which has a strong shearing and disturbance effect on the condensate, forming a highly disturbed gas-liquid two-phase turbulent mixing zone. S3. Heating and Mass Transfer Deoxygenation Step: In the gas-liquid two-phase turbulent mixing zone, the condensate is rapidly heated by entraining steam, and the temperature rises to the saturation temperature; as the temperature rises, the dissolved oxygen in the water precipitates out due to the decrease in solubility, forming tiny oxygen bubbles. S4. Gas separation and discharge steps: The released oxygen bubbles move upward under the action of buoyancy, converge into the gas space at the top of the deaerator, and are finally continuously discharged from the system through the exhaust port located at the upper side of the deaerator. S5. Deoxygenated water collection step: The condensate from the heating and deoxygenation process is evenly collected and discharged on both sides of the bottom of the deaerator to obtain deoxygenated water. S6. Multi-physics monitoring steps: During the deoxygenation process, the temperature of the condensate, the dissolved oxygen content in the deoxygenated water, the equipment vibration and operating noise are monitored in real time, and the internal vapor-liquid two-phase flow state is observed through a visualization window.

[0036] The following is combined with Figure 1 The deoxygenation method proposed in this embodiment is described in detail below: During the steam jet thermal deaeration process, condensate enters the deaerator 8 through the condensate inlet 1-1. First, it passes through the internal flow divider 6 to achieve uniform liquid flow distribution. The flow divider, with its symmetrically arranged circular holes on the upper part, disperses the incoming water into multiple fine streams, with most of the water flowing down from both sides, creating uniform initial conditions for subsequent steam-liquid contact. Subsequently, guided by the guide plate 1-2, the condensate flows steadily downwards along a set path towards the steam nozzle, entering the condensation heat exchange zone. This structural design significantly expands the effective contact area between steam and condensate, enhances interface disturbance, and improves heat and mass transfer efficiency.

[0037] Steam enters the steam inlet 2 through the steam guide pipe and is injected horizontally into the condensation heat exchange zone via the steam nozzle 5. The steam jet forms high-speed turbulent vortices in the liquid, exerting a strong shearing effect on the surrounding water. The jet interface is in a dynamically unstable state, constantly fluctuating and breaking down, driving the continuous generation, deformation, and breakup of bubbles, forming a highly turbulent gas-liquid two-phase turbulent mixing zone. Within the mixing zone, the condensate rapidly absorbs heat through steam entrainment, and its temperature quickly rises to the saturation temperature. As the temperature rises, the dissolved oxygen in the water decreases significantly and rapidly precipitates out. The precipitated oxygen moves upward in the form of bubbles, converges at the steam-water interface, enters the steam space, and is finally discharged from the system through the exhaust port 4.

[0038] During the experiment, temperature, dissolved oxygen, vibration, and noise were monitored simultaneously, and flow and phase were observed, as detailed below: Temperature monitoring: High-precision temperature sensors deployed in the inlet, condensation heat exchange, and outlet water areas record the temperature rise curve of the condensate from its initial state to saturation temperature in real time, providing key data for heat transfer characteristic analysis.

[0039] Dissolved oxygen monitoring: High-temperature resistant dissolved oxygen meters installed at the inlet and outlet of the deaerator and in the steam jet action zone continuously monitor changes in dissolved oxygen concentration. By comparing the oxygen content at different locations, the real-time deaeration efficiency is accurately calculated, and the performance of the device is evaluated.

[0040] Flow and phase observation: Through the visualization window 7 set in the deaerator 8, combined with the high-speed camera system, the vapor-liquid two-phase flow morphology, bubble behavior and oxygen evolution dynamics can be directly observed, which can be used to analyze the phase distribution and mixing characteristics under different working conditions.

[0041] Vibration and noise monitoring: Vibration sensors installed on the outer wall of the deaerator and at key connections collect structural vibration signals caused by steam jets in real time; noise measurement devices installed on the periphery of the device simultaneously collect the operating noise spectrum, and the two are combined for a comprehensive evaluation of the system's operational stability and acoustic characteristics.

[0042] The deoxygenated condensate flows out from deoxygenated water outlet 3, completing a full thermal deoxygenation cycle. Through the above-mentioned multi-parameter synchronous monitoring, the effects of flow ratio and structural parameters such as the number and arrangement of nozzles on deoxygenation efficiency, heat transfer characteristics, and system stability can be systematically studied, providing reliable experimental basis for deaerator performance optimization and engineering applications.

[0043] In summary, this invention provides a comprehensive performance testing device and method for steam jet thermal deoxygenation, addressing the lack of a dedicated testing system and the difficulty in simultaneously measuring multi-physics processes. The device includes a deaerator body and integrated steam guiding, water inlet, water outlet components, and an exhaust structure, equipped with a multi-parameter measurement system. The steam guiding component achieves uniform jet flow through an axial steam guide pipe and symmetrical steam nozzles; the water inlet component forms a stable and uniform water flow through the coordinated action of a flow divider and a guide plate; the measurement system integrates temperature, dissolved oxygen, vibration, and noise sensors, as well as a visualization window, enabling simultaneous monitoring of the temperature field, oxygen evolution, gas-liquid two-phase morphology, equipment vibration, and noise. This invention can simulate different operating conditions, study the influence of flow ratio and structural parameters on deoxygenation efficiency, acquire real-time temperature rise and dissolved oxygen data, and achieve simultaneous observation of bubble dynamics and operational stability, providing a reliable experimental platform and data support for revealing the deoxygenation mechanism and optimizing equipment structure and operation.

[0044] The above description of the technical solution provided by the present invention through several specific embodiments is intended to highlight the advantages and benefits of the technical solution provided by the present invention. However, the above-described specific embodiments are not intended to limit the present invention. Any reasonable modifications and improvements to the present invention, reasonable combinations of implementation methods and equivalent substitutions based on the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-parameter measurement and visualization experimental device for steam jet deoxygenation, characterized in that, The device includes a deaerator body (8), an air guide assembly, a water inlet assembly (1), an exhaust port (4), a water outlet assembly, and a measuring assembly; The water inlet assembly (1), water outlet assembly, and exhaust port (4) are located inside the deaerator body (8); The inlet water assembly (1) and the outlet water assembly are located at the top and bottom of the deaerator body (8), respectively. The exhaust port (4) is located on the upper part of the side of the deaerator body (8) and is used to discharge the released gas. The air guiding assembly includes an air guiding pipe and a steam nozzle (5). The air guiding pipe passes through the middle of the deaerator body (5) axially and extends to the lower region of the water inlet assembly. It is connected to the steam nozzle (5) through a bend. The measuring components are distributed on the surface of the deaerator body (8) and are used to monitor the temperature, flow, noise, vibration and dissolved oxygen content inside the deaerator.

2. The experimental apparatus according to claim 1, characterized in that, The water inlet assembly (1) includes a condensate inlet (1-1), a guide plate (1-2), and a diversion plate (6). The condensate inlet (1-1) is located at the top center of the deaerator body (8) and is used to introduce condensate to be deaerated; The diversion plate (6) is located directly below the condensate inlet (1-1), and has two rows of symmetrically distributed round holes on it to achieve uniform distribution of water flow. The guide plate (1-2) is located below the flow divider (6) and is arranged symmetrically. Its transverse center line coincides with the center line of the air guide pipe, and is used to guide the condensate to flow along the set path.

3. The experimental apparatus according to claim 2, characterized in that, The lateral position of the air guide pipe coincides with the center line of the guide plate (1-2), while the axial position is located directly below the split plate (6).

4. The experimental apparatus according to claim 3, characterized in that, The steam nozzle (5) is arranged symmetrically and connected to the air guide pipe through a horizontal pipeline. Its opening faces the left and right sides and is located in the area below the guide plate (1-2) to ensure that the steam jet can act evenly on the condensate.

5. The experimental apparatus according to claim 1, characterized in that, The water outlet assembly includes two deoxygenated water outlets (3), which are respectively located on both sides of the bottom of the deaerator body (8), and the installation height of each deoxygenated water outlet (3) from the bottom of the deaerator body (8) is the same.

6. The experimental apparatus according to claim 1, characterized in that, The measurement components include temperature measuring points, dissolved oxygen measuring points, noise measuring devices, vibration measuring devices, and a visual glass window.

7. The experimental apparatus according to claim 6, characterized in that, The temperature measuring points include multiple high-precision temperature sensors arranged on the inner wall of the deaerator body (8) to form a measuring point matrix. The measuring point matrix is ​​distributed in the water inlet area, the condensation heat exchange area and the water outlet area to reflect the temperature rise curve of the condensate from the initial state to the saturation temperature.

8. The test apparatus according to claim 6, characterized in that, The dissolved oxygen meter's measuring points form a measuring point matrix, which is distributed at the inlet and outlet positions of the deaerator body (8) and in the steam jet action zone, for continuous detection of dissolved oxygen content in the effluent; the dissolved oxygen meter's measuring points are designed to withstand high temperatures and are equipped with a bypass sampling structure.

9. The experimental apparatus according to claim 6, characterized in that, The vibration measuring device is arranged on the outer wall of the deaerator body (8) and at the key structural connection points to monitor the vibration data caused by the steam jet. The noise measurement device is used to collect and analyze the noise signals generated during the deoxygenation process, and to comprehensively evaluate the system's operating status and acoustic performance in conjunction with vibration data. The visualization glass windows are high-strength pressure-resistant glass windows, and there are multiple of them, with their positions corresponding to the steam jet area, the condensation heat exchange area, and the deoxygenated water outlet area, respectively.

10. A deoxygenation method based on the steam jet deoxygenation multi-parameter measurement and visualization experimental device according to any one of claims 1-9, characterized in that, The method is as follows: S1: The condensate to be deaerated is introduced from the top of the deaerator and flows through the flow divider plate. The flow divider plate disperses the condensate into multiple fine streams through its symmetrically distributed circular hole structure on the upper part and makes it flow down mainly from both sides, so as to achieve the initial uniform distribution of liquid flow. Then, the condensate flows steadily downward along the set path under the guidance of the guide plate and enters the condensation heat exchange zone. S2: Heating steam is introduced axially from the middle of the deaerator and sprayed into the falling condensate water curtain in the form of a jet through steam nozzles that are symmetrically arranged in the horizontal direction in the condensation heat exchange zone; the steam jet forms a high-speed turbulence in the liquid, which has a strong shearing and disturbance effect on the condensate, forming a highly disturbed gas-liquid two-phase turbulent mixing zone. S3: In the gas-liquid two-phase turbulent mixing zone, the condensate is rapidly heated by the entrainment of steam, and the temperature rises to the saturation temperature; as the temperature rises, the dissolved oxygen in the water precipitates out due to the decrease in solubility, forming tiny oxygen bubbles; S4: The released oxygen bubbles move upward under the action of buoyancy, converge into the steam space at the top of the deaerator, and are finally continuously discharged from the system through the exhaust port located at the upper side of the deaerator. S5: The condensate from the heating and deoxygenation process is collected evenly on both sides of the bottom of the deaerator and discharged to obtain deoxygenated water. S6: During the deoxygenation process, the temperature of the condensate, the dissolved oxygen content in the deoxygenated water, the equipment vibration and operating noise are monitored in real time, and the internal vapor-liquid two-phase flow state is observed through a visual window.

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