A method and system for controlling deaeration of a deaerator

Abstract

The present application relates to the technical field of automatic control, and proposes a method and system for controlling oxygen removal of a deaerator, which comprises: introducing the pretreated storage water in a drain tank into the deaerator; opening a deaeration tower to introduce steam into the deaerator to remove oxygen from the water in the deaerator; adjusting the state of a heating device in the deaerator according to the temperature; adjusting the power of the heating device according to the comparison result of the real-time temperature and the preset temperature; adjusting the opening degree of an exhaust valve according to the comparison result of the oxygen content and the preset threshold; and correcting the opening degree of the exhaust valve according to the real-time flow. The present application adjusts the heating device and its power in the deaerator according to the temperature, adjusts the opening degree of the exhaust valve according to the oxygen content and the real-time flow, ensures the dynamic adjustment of the oxygen removal conditions in the deaerator, avoids the situation that the working conditions of the deaerator affect the oxygen removal effect, improves the oxygen removal efficiency of the deaerator, and effectively improves the operation stability of the deaerator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic control, more particularly, to a method and system for controlling deaeration of a deaerator. BACKGROUND

[0002] Oxygen is the main corrosive substance in the boiler power generation feedwater system, not only corrodes the boiler feedwater facilities, but also the corrosion products enter the boiler pipeline and are attached to the pipe wall to form iron scale, affecting the heat transfer of the entire boiler system, and when local corrosion is serious, it can cause uneven heating of the pipeline and pipe explosion accidents.

[0003] The deaerator not only removes dissolved oxygen in the boiler feedwater, but also removes free CO2, NH3, H2S and other corrosive gases in the water, preventing the corrosion of thermal power equipment. The safe and stable operation of the deaerator plays an extremely important role in the boiler feedwater system, prolonging the service life of the boiler and the power generation device. Therefore, whether the deaerator operates normally directly affects the efficiency of the boiler coal gas power generation, and the current deaerator operation process has the problem that the water temperature and water level in the deaerator are unstable, causing low deaeration efficiency, prolonging the deaeration time, and causing substandard deaeration effect, which is easy to corrode the boiler and cause loss.

[0004] Therefore, how to provide a method and system for controlling deaeration of a deaerator to solve the problem of resource waste and property loss caused by unstable water temperature and water level in the deaerator is a difficult problem that needs to be solved by those skilled in the art. SUMMARY

[0005] In view of this, the present application provides a method and system for controlling deaeration of a deaerator to solve the problem of resource waste and property loss caused by unstable water temperature and water level in the deaerator in the prior art.

[0006] In one aspect, the present application provides a method for controlling deaeration of a deaerator, comprising:

[0007] The stored water in the hydrophobic tank is pretreated and introduced into the deaerator;

[0008] The real-time water level in the deaerator is detected by a water level indicator, and when the real-time water level reaches a preset water level, a deaeration tower is started to introduce steam into the deaerator to deaerate the water in the deaerator;

[0009] The temperature of the stored water is obtained, and the state of the heating device in the deaerator is adjusted according to the temperature;

[0010] The real-time temperature of the water in the deaerator is obtained, and the power of the heating device is adjusted according to the comparison result of the real-time temperature and the preset temperature;

[0011] acquire the oxygen content in the deaerator, and adjust the opening degree of the exhaust valve according to a comparison result of the oxygen content and a preset threshold value;

[0012] acquire a real-time flow of water flowing into the deaerator from the hydrophobic tank, and correct the opening degree of the exhaust valve according to the real-time flow.

[0013] Further, the opening of the deaerator tower to the deaerator to introduce steam to deaerate the water in the deaerator includes:

[0014] When the deaerator tower is completely opened, the deaerator tower opening degree is K, and when the deaerator tower is completely closed, the deaerator tower opening degree is K0. The first deaerator tower opening degree K1, the second deaerator tower opening degree K2, the third deaerator tower opening degree K3, and the fourth deaerator tower opening degree K4 are preset, and K0

[0015] The first flow L1, the second flow L2, the third flow L3, and the fourth flow L4 are preset, and 0

[0016] Acquire the real-time flow AL of water flowing into the deaerator from the hydrophobic tank, and adjust the deaerator tower valve opening degree according to the real-time flow AL.

[0017] Further, adjusting the deaerator tower valve opening degree according to the real-time flow AL includes:

[0018] When 0

[0019] When L1

[0020] When L2

[0021] When L3

[0022] Further, adjusting the deaerator tower valve opening degree according to the real-time flow AL includes:

[0023] Acquire the temperature W0 of the stored water, and preset the first temperature threshold value W1, the second temperature threshold value W2, the third temperature threshold value W3, and the fourth temperature threshold value W4, and W1

[0024] The first heating power P1, the second heating power P2, the third heating power P3 and the fourth heating power P4 are preset, and 0

[0025] When W0≤W1, the heating device is turned on and runs at the fourth heating power P4;

[0026] When W1

[0027] When W2

[0028] When W3

[0029] When W4

[0030] Further, after the selected i-th heating power Pi (i=1, 2, 3, 4) is selected as the running power of the heating device, the power of the heating device is adjusted according to the comparison result of the real-time temperature and the preset temperature, including:

[0031] The real-time temperature ΔT of the water in the deaerator is obtained, and the first preset temperature T1, the second preset temperature T2 and the third preset temperature T3 are preset, and T1

[0032] The first adjustment coefficient A1, the second adjustment coefficient A2, the third adjustment coefficient A3 and the fourth adjustment coefficient A4 are preset, and A1

[0033] The adjustment coefficient is selected according to the comparison result of the real-time temperature and each preset temperature to adjust the power of the heating device.

[0034] Further, the adjustment coefficient is selected according to the comparison result of the real-time temperature and each preset temperature to adjust the power of the heating device, including:

[0035] When ΔT

[0036] When T1≤ΔT

[0037] When T2≤ΔT

[0038] When T3≤△T, the first adjustment coefficient A1 is selected to adjust the heating device power to obtain an adjusted heating power Pi*A1.

[0039] Further, the exhaust valve opening degree is adjusted according to the comparison result of the oxygen content and the preset threshold, including:

[0040] The oxygen content H0 in the deaerator is obtained, and a first content threshold H1, a second content threshold H2, a third content threshold H3, and a fourth content threshold H4 are preset, and H1

[0041] A first exhaust valve opening degree Q1, a second exhaust valve opening degree Q2, a third exhaust valve opening degree Q3, and a fourth exhaust valve opening degree Q4 are preset, and 0

[0042] When H0≤H1, the exhaust valve is opened and the first exhaust valve opening degree Q1 is selected to exhaust the gas in the deaerator;

[0043] When H1

[0044] When H2

[0045] When H3

[0046] Further, after selecting the i-th exhaust valve opening degree Qi as the opening degree of the exhaust valve, i=1, 2, 3, 4, the exhaust valve opening degree is corrected according to the real-time flow, including:

[0047] The real-time flow △L of water flowing into the deaerator from the drain tank is obtained, and a first preset flow threshold Y1, a second preset flow threshold Y2, and a third preset flow threshold Y3 are preset, and Y1

[0048] A first correction coefficient X1, a second correction coefficient X2, a third correction coefficient X3, and a fourth correction coefficient X4 are preset, and X1

[0049] The correction coefficient is selected according to the comparison result of the real-time flow and each preset flow threshold to correct the exhaust valve opening degree.

[0050] Further, the correction coefficient is selected according to the comparison result of the real-time flow and each preset flow threshold to correct the exhaust valve opening degree, including:

[0051] When △L < Y1, the first adjustment coefficient X1 is selected to adjust the exhaust valve opening degree, and an adjusted exhaust valve opening degree is Qi*X1;

[0052] When Y1≤△L < Y2, the second adjustment coefficient X2 is selected to adjust the exhaust valve opening degree, and an adjusted exhaust valve opening degree is Qi*X2;

[0053] When Y2≤△L < Y3, the third adjustment coefficient X3 is selected to adjust the exhaust valve opening degree, and an adjusted exhaust valve opening degree is Qi*X3;

[0054] When Y3≤△L, the fourth adjustment coefficient X4 is selected to adjust the exhaust valve opening degree, and an adjusted exhaust valve opening degree is Qi*X4.

[0055] The method for controlling oxygen removal of an oxygen remover provided in the embodiment has the following beneficial effects compared with the prior art:

[0056] The working state of the heating device is adjusted according to the storage water temperature, and the power of the heating device is adjusted according to the real-time temperature, thereby improving the oxygen removal efficiency of the oxygen remover for storage water at different temperatures, and the dynamic adjustment of the power of the heating device according to the real-time temperature helps to maintain the optimal working condition of the oxygen remover, reduces the influence of temperature on the oxygen removal effect of the oxygen remover, adjusts the exhaust valve opening degree according to the real-time temperature and real-time flow rate, ensures that the oxygen remover can quickly remove the gas in the water from the oxygen remover, and reduces the excessive heat loss caused by the excessive exhaust valve opening degree, thereby reducing energy consumption.

[0057] On the other hand, the application also provides a system for controlling oxygen removal of an oxygen remover, which comprises:

[0058] a processor and a memory;

[0059] The processor and the memory are connected through a communication bus:

[0060] The processor is configured to call and execute a program stored in the memory.

[0061] The memory is configured to store a program, and the program is configured to execute the method for controlling oxygen removal of an oxygen remover.

[0062] It can be understood that the method and system for controlling oxygen removal of an oxygen remover have the same beneficial effects, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0063] Various other advantages and benefits will become apparent to those of ordinary skill in the art, upon reading the following detailed description of the preferred embodiment. The accompanying drawings are included to provide a better understanding of the preferred embodiment, and are not intended to constrain the application. Moreover, like reference numerals denote same or similar components throughout the set of drawings. In the drawings:

[0064] Figure 1 The flow chart of the method for controlling the deaerator to deaerate provided by the embodiment of the application;

[0065] Figure 2 The function block diagram of the system for controlling the deaerator to deaerate provided by the embodiment of the application. DETAILED DESCRIPTION

[0066] Exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0067] Thermal deaeration is derived from Henry's law and Dalton's law. Henry's law states that when a liquid and a gas are in the same equilibrium state, the amount of gas dissolved in a unit volume of liquid is directly proportional to the partial pressure of the gas above the liquid surface at a constant temperature. Dalton's law states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual components. Therefore, the total pressure of the mixed gas on the surface of the boiler feed water is equal to the sum of the partial pressures of the individual components and the partial pressure of the steam. When the amount of water vapor in the mixed gas is increased, the partial pressure of oxygen on the surface of the feed water is reduced, and when the feed water reaches the saturation temperature, the steam pressure on the water surface is close to the total pressure of the mixed gas, and the partial pressure of the non-condensable gas is close to zero. Thus, the oxygen in the water is continuously discharged from the water surface through the exhaust pipe to achieve the purpose of deaeration of the feed water. Thermal deaeration has high efficiency and low operating cost, and is currently the main method for deaeration of feed water in power boilers.

[0068] Referring to Figure 1 The embodiment provides a method for controlling a deaerator to deaerate, which comprises the following steps:

[0069] Step S100: After pretreatment, the stored water in the drain tank is introduced into the deaerator.

[0070] Step S200: detecting the real-time water level in the deaerator by using a water level indicator, and opening the deaerator tower to introduce steam into the deaerator to deaerate the water in the deaerator when the real-time water level reaches a preset water level.

[0071] Step S300: obtaining the temperature of the stored water, and adjusting the state of the heating device in the deaerator according to the temperature.

[0072] Step S400: obtaining the real-time temperature of the water in the deaerator, and adjusting the power of the heating device according to the comparison result of the real-time temperature and the preset temperature.

[0073] Step S500: obtaining the oxygen content in the deaerator, and adjusting the opening degree of the exhaust valve according to the comparison result of the oxygen content and the preset threshold.

[0074] Step S600: obtaining the real-time flow rate of the water introduced into the deaerator by the drain tank, and correcting the opening degree of the exhaust valve according to the real-time flow rate.

[0075] Specifically, the pre-treatment of the stored water in the drain tank in step S100 includes using various water treatment processes to remove suspended solids, colloids, inorganic cations, anions and other impurities in the water to obtain desalted water, and detecting the water quality of the desalted water. The desalted water is introduced into the deaerator after passing the detection.

[0076] It can be understood that the heating device of the deaerator is adjusted according to the temperature, and the opening degree of the exhaust valve is adjusted according to the oxygen content and the real-time flow rate to ensure the dynamic adjustment of the deaeration conditions in the deaerator, avoid the influence of the working condition fluctuation of the deaerator on the deaeration effect, improve the deaeration efficiency of the deaerator, and effectively improve the operation stability of the deaerator.

[0077] In some embodiments of the present application, step S200: opening the deaerator tower to introduce steam into the deaerator to deaerate the water in the deaerator, includes: setting the deaerator tower opening degree K when the deaerator tower is completely opened, and the deaerator tower opening degree K0 when the deaerator tower is completely closed, pre-setting the first deaerator tower opening degree K1, the second deaerator tower opening degree K2, the third deaerator tower opening degree K3 and the fourth deaerator tower opening degree K4, and K0

[0078] In some embodiments of the present application, step S200 further comprises: adjusting the valve opening degree of the deaerator according to the real-time flow rate AL; when 0<AL≤L1, the deaerator selects K1 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; when L1<AL≤L2, the deaerator selects K2 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; when L2<AL≤L3, the deaerator selects K3 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; and when L3<AL≤L4, the deaerator selects K4 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator.

[0079] It can be understood that when the drain tank supplies water to the deaerator, the flow rate will change according to the actual production needs, and adjusting the deaerator opening degree according to the flow rate of the drain tank can reduce the cost waste caused by steam surplus in the deaerator, and can prevent the deaeration effect from being weakened due to unstable water temperature in the deaerator.

[0080] In some embodiments of the present application, step S300: the state of the heating device in the deaerator is adjusted according to the temperature, comprises: obtaining the temperature W0 of the stored water, pre-setting a first temperature threshold W1, a second temperature threshold W2, a third temperature threshold W3 and a fourth temperature threshold W4, and W1W2W3W4; pre-setting a first heating power P1, a second heating power P2, a third heating power P3 and a fourth heating power P4, and 0P1P2P3P4; when W0≤W1, the heating device is turned on and runs at the fourth heating power P4; when W1W0≤W2, the heating device is turned on and runs at the third heating power P3; when W2W0≤W3, the heating device is turned on and runs at the second heating power P2; when W3W0≤W4, the heating device is turned on and runs at the first heating power P1; and when W4W0, the heating device is not turned on.

[0081] In some embodiments of the present application, step S400 comprises: after selecting the i-th heating power Pi as the running power of the heating device, i=1, 2, 3, 4, adjusting the power of the heating device according to the comparison result of the real-time temperature and the preset temperature. The real-time temperature AT of the water in the deaerator is obtained, a first preset temperature T1, a second preset temperature T2 and a third preset temperature T3 are pre-set, and T1T2T3; a first adjustment coefficient A1, a second adjustment coefficient A2, a third adjustment coefficient A3 and a fourth adjustment coefficient A4 are pre-set, and A1A2A3A4; and the power of the heating device is adjusted according to the comparison result of the real-time temperature and each preset temperature by selecting an adjustment coefficient.

[0082] Specifically, when △T < T1, the fourth adjustment coefficient A4 is selected to adjust the heating device power, to obtain the adjusted heating power Pi*A4; when T1≤△T < T2, the third adjustment coefficient A3 is selected to adjust the heating device power, to obtain the adjusted heating power Pi*A3; when T2≤△T < T3, the second adjustment coefficient A2 is selected to adjust the heating device power, to obtain the adjusted heating power Pi*A2; when T3≤△T, the first adjustment coefficient A1 is selected to adjust the heating device power, to obtain the adjusted heating power Pi*A1.

[0083] It can be understood that if the deaerator only has a deaerator tower connected to the steam for heating and deaerating the deaerator inlet water, the water in the deaerator has no secondary heating means. During the large load production period, the deaerator continuously feeds water, and the water temperature of the deaerator can be maintained at a relatively reasonable temperature; however, during the small load production period, the water consumption is small or even intermittent, and due to the loss of temperature of the deaerator and the pipeline, the deaerated water temperature cannot be replenished in time, resulting in low deaerated water temperature, affecting the deaeration effect, and in severe cases, it may cause damage to the equipment.

[0084] In some embodiments of the present application, the step S500 of adjusting the exhaust valve opening degree according to the comparison result of the oxygen content and the preset threshold value comprises: obtaining the oxygen content H0 in the deaerator, pre-setting a first content threshold H1, a second content threshold H2, a third content threshold H3 and a fourth content threshold H4, and H1 < H2 < H3 < H4; pre-setting a first exhaust valve opening degree Q1, a second exhaust valve opening degree Q2, a third exhaust valve opening degree Q3 and a fourth exhaust valve opening degree Q4, and 0 < Q1 < Q2 < Q3 < Q4; when H0≤H1, the exhaust valve is opened and the first exhaust valve opening degree Q1 is selected to exhaust the gas in the deaerator; when H1 < H0≤H2, the exhaust valve is opened and the second exhaust valve opening degree Q2 is selected to exhaust the gas in the deaerator;

[0085] When H2 < W0≤H3, the exhaust valve is opened and the third exhaust valve opening degree Q3 is selected to exhaust the gas in the deaerator; when H3 < W0≤H4, the exhaust valve is opened and the fourth exhaust valve opening degree Q4 is selected to exhaust the gas in the deaerator.

[0086] Specifically, the exhaust volume of the vent valve is also a very important factor affecting the deoxygenation capacity of the deaerator. If the oxygen and other gases released from the deaerator cannot be discharged smoothly, it will result in a large amount of residual oxygen in the steam inside the deaerator, which will affect the rate at which oxygen diffuses out of the water. This will increase the residual oxygen content in the effluent, making it impossible to achieve the deoxygenation effect, resulting in increased costs and wasted resources. However, if the vent valve is always kept at its maximum opening, during low-load production periods when the deaerator needs to discharge less oxygen, the maximum opening of the vent valve will also cause rapid heat loss. Therefore, determining the vent valve opening based on the oxygen content can effectively reduce resource waste and improve the deoxygenation efficiency of the deaerator.

[0087] In some embodiments of this application, step S600: after selecting the i-th vent valve opening degree Qi as the opening degree of the vent valve, i=1, 2, 3, 4, the step of correcting the vent valve opening degree according to the real-time flow rate includes: obtaining the real-time flow rate ΔL of the water flowing from the condensate tank into the deaerator; presetting a first preset flow rate threshold Y1, a second preset flow rate threshold Y2, and a third preset flow rate threshold Y3, where Y1 < Y2 < Y3; presetting a first correction coefficient X1, a second correction coefficient X2, a third correction coefficient X3, and a fourth correction coefficient X4, where X1 < X2 < X3 < X4; and selecting the correction coefficient to correct the vent valve opening degree according to the comparison result between the real-time flow rate and each preset flow rate threshold.

[0088] Specifically, when ΔL < Y1, the first adjustment coefficient X1 is used to adjust the exhaust valve opening to obtain an adjusted exhaust valve opening of Qi*X1; when Y1 ≤ ΔL < Y2, the second adjustment coefficient X2 is used to adjust the exhaust valve opening to obtain an adjusted exhaust valve opening of Qi*X2; when Y2 ≤ ΔL < Y3, the third adjustment coefficient X3 is used to adjust the exhaust valve opening to obtain an adjusted exhaust valve opening of Qi*X3; when Y3 ≤ ΔL, the fourth adjustment coefficient X4 is used to adjust the exhaust valve opening to obtain an adjusted exhaust valve opening of Qi*X4.

[0089] Understandably, since the water flowing into the deaerator from the condensate tank can accurately reflect the actual production situation, dynamically adjusting the opening of the exhaust valve according to actual needs effectively improves the accuracy of the exhaust valve opening and enhances the deaeration effect of the deaerator.

[0090] The above embodiment adjusts the working state of the heating device according to the storage water temperature and adjusts the power of the heating device according to the real-time temperature, improves the deaeration efficiency of the deaerator for the storage water at different temperatures, dynamically adjusts the power of the heating device according to the real-time temperature, helps to maintain the optimal working condition of the deaerator, reduces the influence of temperature on the deaeration effect of the deaerator, adjusts the opening degree of the exhaust valve according to the real-time temperature and the real-time flow, ensures that the deaerator can quickly discharge the gas in the water from the deaerator, reduces the excessive heat loss caused by the excessive opening degree of the exhaust valve, avoids the influence of the working condition fluctuation of the deaerator on the deaeration effect, improves the deaeration efficiency of the deaerator, and effectively improves the operation stability of the deaerator.

[0091] In another preferred mode based on the above embodiment, referring to Figure 2 The present embodiment provides a system for controlling deaeration of a deaerator, which comprises:

[0092] a processor and a memory;

[0093] The processor and the memory are connected through a communication bus:

[0094] The processor is configured to call and execute the program stored in the memory.

[0095] The memory is configured to store the program, and the program is at least used to execute the above-mentioned method for controlling deaeration of a deaerator.

[0096] It can be understood that the above-mentioned method and system for controlling deaeration of a deaerator have the same beneficial effects, which will not be described here.

[0097] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

[0098] The present application is described with reference to flowcharts and / or block diagrams according to the method, device (system), and computer program product of the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices produce a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1apparatuses that implement the functions specified in the flowchart or flowcharts and / or blocks. Figure 1

[0099] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the flowchart or flowcharts and / or blocks. Figure 1 Figure 1

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart or flowcharts and / or blocks. Figure 1 Figure 1

[0101] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, rather than limiting the same. Even though the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered within the protection scope of the claims of the present application.​​​​​

Claims

1. A method of controlling deaeration of a deaerator, characterized by, The method comprises the following steps: The storage water in the hydrophobic tank is pre-processed and then introduced into the deaerator; The real-time water level in the deaerator is detected by using a water level indicator, and when the real-time water level reaches a preset water level, a deaeration tower is opened to introduce steam into the deaerator to deaerate the water in the deaerator; The temperature of the storage water is obtained, and the state of a heating device in the deaerator is adjusted according to the temperature; The real-time temperature of the water in the deaerator is obtained, and the power of the heating device is adjusted according to the comparison result of the real-time temperature and a preset temperature; The oxygen content in the deaerator is obtained, and the opening degree of an exhaust valve is adjusted according to the comparison result of the oxygen content and a preset threshold value; The real-time flow of the water introduced from the hydrophobic tank into the deaerator is obtained, and the opening degree of the exhaust valve is corrected according to the real-time flow; The opening of the deaeration tower to introduce steam into the deaerator to deaerate the water in the deaerator comprises the following steps: The deaeration tower opening degree K is set when the deaeration tower is fully opened, the deaeration tower opening degree K0 is set when the deaeration tower is fully closed, the first deaeration tower opening degree K1, the second deaeration tower opening degree K2, the third deaeration tower opening degree K3 and the fourth deaeration tower opening degree K4 are preset, and K0 < K1 < K2 < K3 < K4 ≤ K; The first flow L1, the second flow L2, the third flow L3 and the fourth flow L4 are preset, and 0 < L1 < L2 < L3 < L4; The real-time flow AL of the water introduced from the hydrophobic tank into the deaerator is obtained, and the deaeration tower valve opening degree is adjusted according to the real-time flow AL.

2. The method of controlling deaeration of a deaerator of claim 1, wherein, Adjusting the deaeration tower valve opening degree according to the real-time flow AL comprises the following steps: When 0 < AL ≤ L1, the deaeration tower selects K1 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; When L1 < AL ≤ L2, the deaeration tower selects K2 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; When L2 < AL ≤ L3, the deaeration tower selects K3 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator; When L3 < AL ≤ L4, the deaeration tower selects K4 as the valve opening degree, and steam is introduced into the deaerator to deaerate the water in the deaerator.

3. The method of controlling deaeration of a deaerator of claim 2, wherein, Adjusting the state of the heating device in the deaerator according to the temperature comprises the following steps: The temperature W0 of the storage water is obtained, the first temperature threshold W1, the second temperature threshold W2, the third temperature threshold W3 and the fourth temperature threshold W4 are preset, and W1 < W2 < W3 < W4; The first heating power P1, the second heating power P2, the third heating power P3 and the fourth heating power P4 are preset, and 0 < P1 < P2 < P3 < P4; When W0 ≤ W1, the heating device is turned on and runs at the fourth heating power P4; When W1 < W0 ≤ W2, the heating device is turned on and runs at the third heating power P3; When W2 < W0 ≤ W3, the heating device is turned on and runs at the second heating power P2; When W3 < W0 ≤ W4, the heating device is turned on and runs at the first heating power P1. when W3 < W0 ≤ W4, the heating device is turned on and runs at the first heating power P1; when W4 < W0, the heating device is not turned on.

4. The method of controlling deaeration of a deaerator of claim 3, wherein, After selecting the i-th heating power Pi as the running power of the heating device, i = 1, 2, 3, 4, the power of the heating device is adjusted according to the comparison result of the real-time temperature and the preset temperature, comprising: obtaining the real-time temperature △T of the water in the deaerator, and pre-setting a first preset temperature T1, a second preset temperature T2 and a third preset temperature T3, and T1 < T2 < T3; pre-setting a first adjustment coefficient A1, a second adjustment coefficient A2, a third adjustment coefficient A3 and a fourth adjustment coefficient A4, and A1 < A2 < A3 < A4; selecting the adjustment coefficient according to the comparison result of the real-time temperature and each preset temperature to adjust the power of the heating device.

5. The method of controlling deaeration of a deaerator of claim 4, wherein, The adjustment coefficient is selected according to the comparison result of the real-time temperature and each preset temperature to adjust the power of the heating device, comprising: when △T < T1, the fourth adjustment coefficient A4 is selected to adjust the power of the heating device, and the adjusted heating power Pi*A4 is obtained; when T1 ≤ △T < T2, the third adjustment coefficient A3 is selected to adjust the power of the heating device, and the adjusted heating power Pi*A3 is obtained; when T2 ≤ △T < T3, the second adjustment coefficient A2 is selected to adjust the power of the heating device, and the adjusted heating power Pi*A2 is obtained; when T3 ≤ △T, the first adjustment coefficient A1 is selected to adjust the power of the heating device, and the adjusted heating power Pi*A1 is obtained.

6. The method of controlling deaeration of a deaerator of claim 5, wherein, adjusting the opening degree of the exhaust valve according to the comparison result of the oxygen content and the preset threshold value, comprising: obtaining the oxygen content H0 in the deaerator, and pre-setting a first content threshold H1, a second content threshold H2, a third content threshold H3 and a fourth content threshold H4, and H1 < H2 < H3 < H4; pre-setting a first exhaust valve opening degree Q1, a second exhaust valve opening degree Q2, a third exhaust valve opening degree Q3 and a fourth exhaust valve opening degree Q4, and 0 < Q1 < Q2 < Q3 < Q4; when H0 ≤ H1, the exhaust valve is opened and the first exhaust valve opening degree Q1 is selected to exhaust the gas in the deaerator; when H1 < H0 ≤ H2, the exhaust valve is opened and the second exhaust valve opening degree Q2 is selected to exhaust the gas in the deaerator; when H2 < W0 ≤ H3, the exhaust valve is opened and the third exhaust valve opening degree Q3 is selected to exhaust the gas in the deaerator; when H3 < W0 ≤ H4, the exhaust valve is opened and the fourth exhaust valve opening degree Q4 is selected to exhaust the gas in the deaerator.

7. The method of controlling deaeration of a deaerator of claim 6, wherein, After selecting the i-th exhaust valve opening degree Qi as the opening degree of the exhaust valve, i = 1, 2, 3, 4, the opening degree of the exhaust valve is adjusted according to the real-time flow, comprising: obtaining the real-time flow △L of the water in the deaerator, and pre-setting a first preset flow threshold Y1, a second preset flow threshold Y2 and a third preset flow threshold Y3, and Y1 < Y2 < Y3; The first correction coefficient X1, the second correction coefficient X2, the third correction coefficient X3 and the fourth correction coefficient X4 are preset, and X1X2X3X4; The exhaust valve opening is corrected according to the comparison result of the real-time flow and each preset flow threshold value.

8. The method of controlling deaeration of a deaerator of claim 7, wherein, The correction coefficient is selected according to the comparison result of the real-time flow and each preset flow threshold value to correct the exhaust valve opening. When △LY1, the first adjustment coefficient X1 is selected to adjust the exhaust valve opening, and the adjusted exhaust valve opening is Qi*X1; When Y1≤△LY2, the second adjustment coefficient X2 is selected to adjust the exhaust valve opening, and the adjusted exhaust valve opening is Qi*X2; When Y2≤△LY3, the third adjustment coefficient X3 is selected to adjust the exhaust valve opening, and the adjusted exhaust valve opening is Qi*X3; When Y3≤△L, the fourth adjustment coefficient X4 is selected to adjust the exhaust valve opening, and the adjusted exhaust valve opening is Qi*X4.

9. A system for controlling deaeration of a deaerator, the system comprising: It comprises: a processor and a memory; The processor and the memory are connected through a communication bus: The processor is used to call and execute the program stored in the memory. The memory is used to store the program, and the program is used to execute the method for controlling the deaeration of the deaerator according to any one of claims 1-8.

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