Generator internal cooling water optimization processing method, device and system

Abstract

The application discloses a generator internal cooling water optimization processing method, device and system, through obtaining a target conductivity value and a current water outlet conductivity value, and combining the relationship between the ammonia concentration and the conductivity of the internal cooling water, an adjustment amount of the water supplement conductivity control value relative to the current water outlet conductivity value is determined to supplement the internal cooling water tank; the operation is circular until the obtained conductivity difference value is less than or equal to a preset threshold value. The application is equivalent to realizing that the water supplement conductivity control value is determined according to the required ammonia addition amount of the current internal cooling water, so that the control of the water supplement conductivity control value can be more accurate, and the control fluctuation is greatly reduced and the system regulation period is shortened. In addition, through multiple sampling and circular execution, the current water outlet conductivity value can be gradually approximated to the internal cooling water target conductivity value in a progressive manner, and finally stabilized in the threshold range of the internal cooling water target conductivity value, so that the adjustment of the generator internal cooling water conductivity is more accurate.

Description

Technical Field

[0001] This application relates to the field of generator internal cooling water treatment technology, and in particular to a generator internal cooling water optimization treatment method, device and system. Background Technology

[0002] With the widespread application of large generator sets, substandard cooling water quality has led to scaling and changes in generator parameters and capacity, resulting in increasingly severe copper corrosion and deposition in the generator rotor's flow parts. Therefore, the chemical water treatment method of the generator's internal cooling water system directly affects the safe operation of the generator set.

[0003] According to relevant standards, controlling the pH value of the generator's internal cooling water can effectively suppress the copper corrosion rate. Furthermore, according to empirical formulas, the pH value of the generator's internal cooling water has a logarithmic positive correlation with its conductivity; that is, as conductivity increases, pH also increases. Therefore, existing technologies utilize this relationship to control the pH value of the internal cooling water by controlling its conductivity, thereby effectively suppressing the copper corrosion rate. One related technical solution introduces a mixture of ammonia-treated condensate and non-ammonia-treated condensate as the generator's internal cooling water makeup water. A target conductivity value is set based on the outlet conductivity of the internal cooling water tank, and this target conductivity value is used as the control value for the makeup water conductivity. The mixing ratio of the two incoming water sources is adjusted to bring the current makeup water conductivity to the control value, thus controlling the conductivity and pH of the generator's internal cooling water and ultimately suppressing the copper corrosion rate.

[0004] Existing technical solutions mostly use the desired outlet conductivity value of the internal cooling water tank as the control value for determining the makeup water conductivity, thus performing fuzzy control. They do not provide a more precise and specific method for determining the makeup water conductivity control value. Furthermore, in actual working conditions, it is often impossible to adjust the outlet conductivity of the internal cooling water tank to the correct position in one go, but multiple adjustments are required. Therefore, existing technical solutions tend to have large control fluctuations, and the outlet conductivity value of the internal cooling water tank oscillates with the adjustment cycle, making it difficult to quickly and accurately stabilize the outlet conductivity value to near the target conductivity value. Summary of the Invention

[0005] This invention provides a method, apparatus, and system for optimizing the cooling water in a generator, so as to quickly and accurately stabilize the conductivity value of the cooling water in the generator near a target conductivity value.

[0006] In a first aspect, embodiments of the present invention provide a method for optimizing the cooling water treatment inside a generator. This method involves introducing a mixture of water from two sources—water after condensate polishing and ammonia addition, and water before condensate polishing and ammonia addition—as makeup water for the generator's internal cooling water, thereby adjusting the conductivity and pH of the generator's internal cooling water. The method includes:

[0007] Obtain the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the current sampling and detection of the outlet water of the internal cooling water tank;

[0008] Obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0009] When the conductivity difference is greater than the preset threshold, a first replenishment water conductivity control value is determined based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with a first preset function relationship and a second preset function relationship. The first preset function relationship represents a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the second preset function relationship represents a one-to-one correspondence between the first replenishment water conductivity control value and the current outlet water conductivity value, as well as the adjustment amount of the first replenishment water conductivity control value relative to the current outlet water conductivity value.

[0010] The mixing unit controls the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0011] Return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0012] Secondly, embodiments of the present invention also provide a generator internal cooling water optimization treatment device, which introduces a mixture of water from two sources—the water after condensate polishing and ammonia addition, and the water before condensate polishing and ammonia addition—as generator internal cooling water makeup water to adjust the conductivity and pH of the generator internal cooling water. The device includes:

[0013] The conductivity acquisition module is used to acquire the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the current sampling and detection of the outlet water of the internal cooling water tank.

[0014] The difference comparison module is used to obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0015] The first determining module is used to determine a first replenishment water conductivity control value based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with a first preset functional relationship and a second preset functional relationship, when the conductivity difference is greater than the preset threshold. The first preset functional relationship represents a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the second preset functional relationship represents a one-to-one correspondence between the first replenishment water conductivity control value and the current outlet water conductivity value, as well as the adjustment amount of the first replenishment water conductivity control value relative to the current outlet water conductivity value.

[0016] The first water replenishment generation module is used to control the mixing unit to adjust the mixing ratio of the two incoming water sources, so as to adjust the current conductivity value of the internal cooling water replenishment to the first water replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0017] The loop execution module is used to return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0018] Thirdly, embodiments of the present invention also provide a generator internal cooling water optimization treatment system, which introduces a mixture of water from two sources—condensate polishing and ammonia addition—as generator internal cooling water makeup water to adjust the conductivity and pH of the generator internal cooling water. The system includes: a mixing unit, a flow control unit, a makeup water sampling and detection unit, an internal cooling water tank inlet unit, an internal cooling water tank, an outlet water sampling and detection unit, a circulation adjustment unit, a control system, and a memory.

[0019] The control system is communicatively connected to the mixing unit, the flow control unit, the water replenishment sampling and detection unit, the internal cooling water tank inlet unit, the outlet water sampling and detection unit, the circulation adjustment unit, and the memory, respectively.

[0020] The mixing unit is used to introduce the two incoming water streams and mix them to obtain the internal cooling water makeup water, and to adjust the mixing ratio of the two incoming water streams according to the instructions of the control system, so as to adjust the current conductivity value of the internal cooling water makeup water to the makeup water conductivity control value.

[0021] The flow control unit is used to adjust the flow rate of the internal cooling water supply according to the instructions of the control system.

[0022] The water replenishment sampling and detection unit is used to obtain the water replenishment conductivity value of the internal cooling water replenishment and send the water replenishment conductivity value to the control system;

[0023] The effluent sampling and detection unit is used to obtain the effluent conductivity value of the internal cooling water tank and send the effluent conductivity value to the control system.

[0024] The internal cooling water tank inlet unit is used to supply internal cooling water with a conductivity value that reaches the replenishment conductivity control value to the internal cooling water tank according to the instructions of the control system.

[0025] The circulation adjustment unit is used to return internal cold water with a conductivity value that has not reached the water replenishment conductivity control value to the mixing unit according to the instructions of the control system.

[0026] The memory is used to store one or more programs;

[0027] The one or more programs are executed by the control system to implement the generator internal cooling water optimization treatment method as described in the first aspect of the embodiments of the present invention.

[0028] This invention acquires the user-defined target conductivity value of the internal cooling water and the current outlet conductivity value obtained from sampling and detecting the outlet water of the internal cooling water tank. Then, when the conductivity difference exceeds a preset threshold, a first replenishment conductivity control value is determined based on the target conductivity value and the current outlet conductivity value, combined with the one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the one-to-one correspondence between the first replenishment conductivity control value and the current outlet conductivity value, as well as the adjustment amount of the first replenishment conductivity control value relative to the current outlet conductivity value. Subsequently, the mixing unit is controlled to adjust the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thus obtaining the first target internal cooling water replenishment. This first target internal cooling water replenishment is then used to replenish the internal cooling water tank. Finally, the process returns to acquiring the current outlet conductivity value and acquiring a new conductivity difference until the acquired conductivity difference is less than or equal to a preset threshold. By establishing a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, the current outlet water conductivity value and the target internal cooling water conductivity value can be converted into corresponding internal cooling water ammonia concentration values. This allows for the determination of the required adjustment amount for the current internal cooling water ammonia concentration. Given a known fixed total water volume in the internal cooling water system, the required mass of ammonia to be added corresponds one-to-one with the required adjustment amount for the current internal cooling water ammonia concentration. In other words, this embodiment of the invention effectively determines the makeup water conductivity control value based on the required amount of ammonia to be added to the current internal cooling water. This makes the control of the makeup water conductivity control value more precise, significantly reducing control fluctuations and eliminating the need for prolonged and repeated adjustments, thus effectively shortening the system control cycle. Furthermore, by repeatedly sampling and continuously updating the current outlet water conductivity value, the method steps of this embodiment of the invention are executed cyclically. This achieves dynamic and uniform mixing of the internal cooling water in the internal cooling water tank to a stable state, without the need for static mixing to uniformity and then adjusting the replenishment water conductivity value. This further shortens the system's control cycle, making the adjustment of the generator's internal cooling water conductivity faster. Moreover, it allows the current outlet water conductivity value to gradually approach the target internal cooling water conductivity value and eventually stabilize within the threshold range of the target internal cooling water conductivity value, thereby making the adjustment of the generator's internal cooling water conductivity more precise. Attached Figure Description

[0029] Figure 1 This is a schematic flowchart of a generator internal cooling water optimization treatment method provided in Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic flowchart of another generator internal cooling water optimization treatment method provided in Embodiment 2 of the present invention;

[0031] Figure 3 This is a schematic flowchart of another generator internal cooling water optimization treatment method provided in Embodiment 3 of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of a generator internal cooling water optimization treatment device provided in Embodiment 4 of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of a generator internal cooling water optimization treatment system provided in Embodiment 5 of the present invention;

[0034] Figure 6 This is an example flowchart of the application process of a generator internal cooling water optimization treatment system provided in Embodiment 5 of the present invention. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the drawings, not the entire structure.

[0036] Example 1

[0037] Figure 1 This is a flowchart illustrating a generator internal cooling water optimization treatment method according to Embodiment 1 of the present invention. This embodiment can be applied to determining the water replenishment conductivity control value based on the required ammonia addition amount for the current internal cooling water, and by cyclically executing the generator internal cooling water optimization treatment method steps described in this embodiment of the present invention, so that the current outlet water conductivity value gradually approaches the target conductivity value of the internal cooling water, and finally stabilizes within the threshold range of the target conductivity value of the internal cooling water.

[0038] like Figure 1 As shown, the generator internal cooling water optimization treatment method provided in this embodiment includes:

[0039] S100: Obtain the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the sampling and detection of the outlet water of the internal cooling water tank.

[0040] Among them, the target conductivity value of the internal cooling water is the expected value of the outlet conductivity value of the internal cooling water tank set by the user, and the current outlet conductivity value is the conductivity value obtained by sampling and detecting the outlet water of the internal cooling water tank this time.

[0041] S110. Obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0042] The preset threshold can be set according to actual system parameters, operating conditions and application requirements, and the preset threshold is greater than or equal to zero.

[0043] Understandably, the smaller the preset threshold, the closer the current outlet water conductivity value when the system reaches stability will be to the target conductivity value of the internal cooling water. In other words, the smaller the preset threshold, the smaller the error between the system's stable value and the target conductivity value of the internal cooling water. Correspondingly, the smaller the preset threshold, the longer it takes for the system's current outlet water conductivity value to stabilize, and vice versa.

[0044] S120. When the conductivity difference is greater than the preset threshold, the first water replenishment conductivity control value is determined based on the target conductivity value of the internal cooling water and the current water outlet conductivity value, combined with the first preset function relationship and the second preset function relationship.

[0045] Wherein, the first preset function relationship is used to represent the one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the second preset function relationship is used to represent the one-to-one correspondence between the first water replenishment conductivity control value and the current water outlet conductivity value, as well as the adjustment amount of the first water replenishment conductivity control value relative to the current water outlet conductivity value.

[0046] Understandably, when the conductivity difference exceeds the preset threshold, it indicates a significant discrepancy between the current outlet water conductivity and the target conductivity of the internal cooling water, necessitating adjustment through water replenishment. Conversely, when the conductivity difference is less than or equal to the preset threshold, it means the difference between the current outlet water conductivity and the target conductivity of the internal cooling water meets the error requirements. In this case, no further adjustment of the internal cooling water replenishment conductivity is needed; simply maintain the current replenishment conductivity control value when replenishing the internal cooling water tank.

[0047] Furthermore, the conductivity difference is an absolute value. When the conductivity difference is not zero, there are two possibilities: one is that the current outlet water conductivity value is less than the target conductivity value of the internal cooling water, and the other is that the current outlet water conductivity value is greater than the target conductivity value of the internal cooling water. Therefore, when the conductivity difference is greater than the preset threshold, for the case where the current outlet water conductivity value is less than the target conductivity value of the internal cooling water, the current outlet water conductivity value can be increased to reduce the conductivity difference to below the preset threshold; conversely, for the case where the current outlet water conductivity value is greater than the target conductivity value of the internal cooling water, the current outlet water conductivity value can be decreased to reduce the conductivity difference to below the preset threshold.

[0048] The first preset function expression represents a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water. Therefore, the current outlet water conductivity value and the target internal cooling water conductivity value can be converted into corresponding internal cooling water ammonia concentration values ​​through the first preset function expression, thereby obtaining the required adjustment amount for the current internal cooling water ammonia concentration (i.e., the difference between the internal cooling water ammonia concentration value corresponding to the current outlet water conductivity value and the internal cooling water ammonia concentration value corresponding to the target internal cooling water conductivity value). When the total water volume of the internal cooling water system is a known fixed value, the mass of ammonia required to be added to the current internal cooling water corresponds one-to-one with the required adjustment amount for the current internal cooling water ammonia concentration (where Δm represents the mass of ammonia required to be added to the current internal cooling water, ΔC represents the required adjustment amount for the current internal cooling water ammonia concentration, and V represents the total water volume of the internal cooling water system, then Δm = V·ΔC). Therefore, in this embodiment of the invention, the water replenishment conductivity control value is determined based on the required adjustment amount for the current internal cooling water ammonia concentration, which is equivalent to determining the water replenishment conductivity control value based on the required amount of ammonia added to the current internal cooling water. This allows for more precise control of the water replenishment conductivity value, greatly reducing control fluctuations and eliminating the need for prolonged and repeated adjustments, thus effectively shortening the system control cycle.

[0049] Based on the adjustment amount required for the current ammonia concentration in the internal cooling water obtained through the first preset functional relationship, the adjustment amount required for the current ammonia concentration in the internal cooling water can be further converted into the corresponding conductivity value through the first preset functional relationship.

[0050] In one embodiment, the conductivity value corresponding to the required adjustment amount of the current internal cooling water ammonia concentration is determined as the adjustment amount of the makeup water conductivity control value relative to the current outlet water conductivity value. The second preset functional relationship represents the one-to-one correspondence between the makeup water conductivity control value, the current outlet water conductivity value, and the adjustment amount of the makeup water conductivity control value relative to the current outlet water conductivity value. Therefore, the final makeup water conductivity control value can be obtained based on the determined adjustment amount of the makeup water conductivity control value relative to the current outlet water conductivity value, combined with the second preset functional relationship.

[0051] S130. The mixing unit is controlled to adjust the mixing ratio of the two incoming water sources to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0052] In one embodiment, after determining the first water replenishment conductivity control value, the method further includes: obtaining the current conductivity value of the internal cooling water replenishment and comparing the current conductivity value of the internal cooling water replenishment with the first water replenishment conductivity control value;

[0053] Accordingly, the mixing unit adjusts the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, including:

[0054] When the current conductivity value of the internal cooling water makeup is less than the first makeup water conductivity control value, the mixing unit is controlled to increase the proportion of condensate polished and ammonia-added water in the two incoming water sources, so as to raise the current conductivity value of the internal cooling water makeup to the first makeup water conductivity control value.

[0055] When the current conductivity value of the internal cooling water makeup is greater than the first makeup water conductivity control value, the mixing unit is controlled to reduce the proportion of condensate polished and ammonia-added water in the two incoming water streams, so as to reduce the current conductivity value of the internal cooling water makeup to the first makeup water conductivity control value.

[0056] When the current conductivity value of the internal cooling water replenishment is equal to the first replenishment water conductivity control value, the mixing unit controls the mixing unit to keep the current mixing ratio of the two incoming water sources unchanged.

[0057] Understandably, when the current conductivity value of the internal cooling water makeup water differs significantly from the first makeup water conductivity control value, adjusting the current conductivity value of the internal cooling water makeup water to the first makeup water conductivity control value requires a certain adjustment time. At this time, the water inlet of the internal cooling water tank can be shut off, and the current conductivity value of the internal cooling water makeup water can be continuously monitored during the process of adjusting the mixing ratio of the two incoming water sources until the current conductivity value of the internal cooling water makeup water is adjusted to the first makeup water conductivity control value.

[0058] S140. Return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0059] Understandably, by repeatedly sampling and continuously updating the current outlet water conductivity value, and cyclically executing steps S100 to S130, the internal cooling water in the internal cooling water tank is dynamically mixed to a stable state without the need for static mixing and subsequent adjustment of the makeup water conductivity value. This further shortens the system's control cycle, making the adjustment of the generator's internal cooling water conductivity faster. Furthermore, through cyclical operation, the current outlet water conductivity value can progressively approach the target internal cooling water conductivity value and eventually stabilize within the threshold range of the target internal cooling water conductivity value, thus making the adjustment of the generator's internal cooling water conductivity more precise.

[0060] In one embodiment, based on the sampling and detection cycle set by the user, the system returns to perform the operation of obtaining the current effluent conductivity value and obtains a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0061] Understandably, the shorter the sampling and detection cycle of the water outlet from the internal cooling water tank set by the user, the faster the frequency of the above-mentioned cyclic operation, that is, the faster the adjustment frequency of the water replenishment conductivity. Ideally, the curve of the current water outlet conductivity value updated in real time over time will be a curve that monotonically increases or decreases in the early stage, and then infinitely approaches or reaches the target conductivity value of the internal cooling water in the later stage.

[0062] This invention, through a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, converts the current outlet water conductivity value and the target internal cooling water conductivity value into corresponding internal cooling water ammonia concentration values. This allows for the determination of the required adjustment amount for the current internal cooling water ammonia concentration. With the total water volume of the internal cooling water system being a known fixed value, the required mass of ammonia to be added to the current internal cooling water corresponds one-to-one with the required adjustment amount for the current internal cooling water ammonia concentration. In other words, this invention effectively determines the makeup water conductivity control value based on the required amount of ammonia to be added to the current internal cooling water. This makes the control of the makeup water conductivity value more precise, greatly reducing control fluctuations and eliminating the need for prolonged and repeated adjustments, thus effectively shortening the system control cycle. Furthermore, by repeatedly sampling and continuously updating the current outlet water conductivity value, the method steps of this embodiment of the invention are executed cyclically. This achieves dynamic and uniform mixing of the internal cooling water in the internal cooling water tank to a stable state, without the need for static mixing to uniformity and then adjusting the replenishment water conductivity value. This further shortens the system's control cycle, making the adjustment of the generator's internal cooling water conductivity faster. Moreover, it allows the current outlet water conductivity value to gradually approach the target internal cooling water conductivity value and eventually stabilize within the threshold range of the target internal cooling water conductivity value, thereby making the adjustment of the generator's internal cooling water conductivity more precise.

[0063] Furthermore, the above embodiments can be further optimized by including:

[0064] When the conductivity difference is less than or equal to the preset threshold, the current effluent conductivity value is determined as the second replenishment conductivity control value.

[0065] The mixing unit adjusts the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the second replenishment conductivity control value, thereby obtaining the second target internal cooling water replenishment, and using the second target internal cooling water replenishment to replenish the internal cooling water tank.

[0066] Understandably, when the conductivity difference is less than or equal to the preset threshold, it means that the difference between the current outlet water conductivity value and the target conductivity value of the internal cooling water is within the allowable error range (and the target conductivity value of the internal cooling water itself has a range of values, rather than a single fixed value). At this time, it can be considered that there is no need to adjust the current outlet water conductivity value. Therefore, the current outlet water conductivity value can be directly used as the water replenishment conductivity control value, thereby adjusting the current conductivity value of the internal cooling water replenishment to the current outlet water conductivity value, and then replenishing the internal cooling water tank.

[0067] Furthermore, the above embodiment is further optimized by including, before obtaining the conductivity difference between the target conductivity value of the internal cooling water and the current effluent conductivity, and comparing the conductivity difference with a preset threshold, the method further includes:

[0068] Obtain the user-defined internal cooling water conductivity warning value, wherein the target conductivity value of the internal cooling water is less than the internal cooling water conductivity warning value;

[0069] Compare the current outflow water conductivity value with the internal cooling water conductivity warning value;

[0070] Accordingly, the step of obtaining the conductivity difference between the target conductivity value of the internal cooling water and the current effluent conductivity, and comparing the conductivity difference with a preset threshold, includes:

[0071] When the current outflow conductivity value is less than the internal cooling water conductivity warning value, the conductivity difference between the internal cooling water target conductivity value and the current outflow conductivity is obtained, and the conductivity difference is compared with a preset threshold.

[0072] Among them, the internal cooling water conductivity warning value is the high limit alarm value of the internal cooling water conductivity of the generator.

[0073] Understandably, if the current outlet water conductivity value reaches or exceeds the internal cooling water conductivity warning value, it will accelerate the copper corrosion rate of the generator, endangering the generator's lifespan and safe operation. By setting an internal cooling water conductivity warning value, appropriate measures can be taken in a timely manner when the current outlet water conductivity value exceeds the internal cooling water conductivity warning value.

[0074] In one embodiment, an alarm is issued when the current outlet water conductivity value is greater than or equal to the internal cooling water conductivity warning value. The alarm may include, but is not limited to, text alarms and sound alarms.

[0075] In one embodiment, when the current outlet water conductivity value is greater than or equal to the internal cooling water conductivity warning value, the mixing unit is controlled to shut off the condensate polishing and ammonia addition water from both incoming water sources, and the proportion of condensate polishing and ammonia addition water is adjusted to the maximum. At the same time, the flow control unit is controlled to adjust the inlet flow rate of the internal cooling water tank to the maximum, so as to reduce the current outlet water conductivity value to below the internal cooling water conductivity warning value as soon as possible.

[0076] Example 2

[0077] Figure 2 This is a flowchart illustrating another generator internal cooling water optimization treatment method provided in Embodiment 2 of the present invention. This embodiment further optimizes the above embodiment by determining the first makeup water conductivity control value based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with the first preset function relationship and the second preset function relationship. The optimization is as follows:

[0078] Substitute the current outlet water conductivity value and the target internal cooling water conductivity value into the first preset function relationship to calculate the current internal cooling water ammonia concentration value corresponding to the current outlet water conductivity value and the target internal cooling water ammonia concentration value corresponding to the target internal cooling water conductivity value.

[0079] Obtain the ammonia concentration difference between the current internal cooling water ammonia concentration value and the target internal cooling water ammonia concentration value;

[0080] Substituting the ammonia concentration difference into the first preset function relationship, the water replenishment conductivity gain value corresponding to the ammonia concentration difference is obtained;

[0081] Compare the current outflow conductivity value with the target conductivity value of the internal cooling water;

[0082] Based on the comparison results, the replenishment conductivity gain value and the current outflow conductivity value are substituted into the second preset function relationship to obtain the first replenishment conductivity control value.

[0083] like Figure 2 As shown, the generator internal cooling water optimization treatment method provided in this embodiment includes:

[0084] S200: Obtain the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the sampling and detection of the outlet water of the internal cooling water tank.

[0085] S210. Obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0086] S220. When the conductivity difference is greater than the preset threshold, the current outlet water conductivity value and the target internal cooling water conductivity value are substituted into the first preset function relationship to calculate the current internal cooling water ammonia concentration value corresponding to the current outlet water conductivity value and the target internal cooling water ammonia concentration value corresponding to the target internal cooling water conductivity value.

[0087] Optionally, the first preset functional relationship is:

[0088] C = 0.0132DD 2 +0.0627DD, DD≥0

[0089] Where C represents the ammonia concentration of the internal cooling water, in milligrams per liter (mg / L); DD represents the conductivity of the internal cooling water, in microsiemens per centimeter (μS / cm).

[0090] It is understandable that after condensate is finely treated, the concentration of carbon dioxide in it can be considered to be equal to or close to zero. At this time, adding ammonia after condensate fine treatment can increase its conductivity. There is a strict mathematical relationship between the concentration of ammonia in the condensate finely treated water and the conductivity value, as shown in the above formula.

[0091] It should be noted that the mathematical relationship between the ammonia concentration and conductivity value in the ammonia-added water for condensate polishing is also related to the ammonia ionization constant, which in turn is related to the water temperature of the ammonia-added water for condensate polishing. The aforementioned first preset functional relationship is obtained based on the ammonia ionization constant at a water temperature of 25℃. Therefore, for different temperature conditions, the corresponding ammonia ionization constant should be selected to redetermine the first preset functional relationship.

[0092] S230. Obtain the ammonia concentration difference between the current internal cooling water ammonia concentration value and the target internal cooling water ammonia concentration value.

[0093] S240. Substitute the ammonia concentration difference into the first preset function relationship to obtain the water replenishment conductivity gain value corresponding to the ammonia concentration difference.

[0094] It is understandable that monotonic functions all have corresponding inverse function forms. For example, if the first preset function relationship is a monotonic function of the ammonia concentration of the internal cooling water with respect to the conductivity of the internal cooling water, then the inverse function form of the first preset function relationship is a monotonic function of the conductivity of the internal cooling water with respect to the ammonia concentration of the internal cooling water.

[0095] Optionally, the inverse function of the first preset function relationship is obtained, and the ammonia concentration difference is substituted into the inverse function relationship to obtain the water replenishment conductivity gain value corresponding to the ammonia concentration difference.

[0096] S250. Compare the current outflow conductivity value with the target conductivity value of the internal cooling water.

[0097] S260. Based on the comparison results, substitute the water replenishment conductivity gain value and the current outflow conductivity value into the second preset function relationship to obtain the first water replenishment conductivity control value.

[0098] Optionally, the second preset functional relationship is:

[0099]

[0100] Among them, DD 控制 Used to represent the first water replenishment conductivity control value, DD 增益 Used to represent the water replenishment conductivity gain value, DD 当前 Used to represent the current effluent conductivity value, DD 目标 The values ​​used to represent the target conductivity of the internal cooling water are k1 and k2, which are preset gain coefficients and k1>0 and k2>0.

[0101] Understandably, ideally, the replenishment conductivity gain value is the adjustment amount of the replenishment conductivity control value relative to the current effluent conductivity value (i.e., k1 = k2 = 1 at this time). However, in actual operating conditions, due to factors such as system errors, it is often necessary to adjust the replenishment conductivity gain value in conjunction with compensation factors (such as preset gain coefficients k1 and k2), and then adjust the replenishment conductivity gain value (i.e., k1·DD). 增益 k2·DD 增益 This is used as an adjustment amount for the water replenishment conductivity control value relative to the current water outlet conductivity value, in order to compensate for the impact of errors.

[0102] By comparing the current outlet water conductivity value with the target conductivity value of the internal cooling water, the makeup water conductivity gain value and the current outlet water conductivity value are substituted into the second preset function relationship under different comparison results to obtain the first makeup water conductivity control value. This realizes that if the current outlet water conductivity value is greater than the target conductivity value of the internal cooling water, or if the current outlet water conductivity value is less than the target conductivity value of the internal cooling water, the current outlet water conductivity value needs to be adjusted to be smaller or larger accordingly, and then the corresponding makeup water conductivity control value is determined so that the conductivity difference is reduced to below the preset threshold.

[0103] S270. The mixing unit controls the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0104] S280, Return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0105] This invention, through a first preset functional relationship, determines the current ammonia concentration value of the internal cooling water corresponding to the current outlet water conductivity value and the target ammonia concentration value of the internal cooling water corresponding to the target internal cooling water conductivity value, thereby obtaining the ammonia concentration difference between the two. Thus, when the total water volume of the internal cooling water system is a known fixed value, the mass of ammonia required to be added to the current internal cooling water corresponds one-to-one with the ammonia concentration difference (i.e., the required adjustment amount for the current internal cooling water ammonia concentration). In other words, this invention achieves the determination of the makeup water conductivity control value based on the required amount of ammonia added to the current internal cooling water. Secondly, through a second preset functional relationship, the makeup water conductivity control value is determined for two scenarios where the current outlet water conductivity value needs to be adjusted accordingly (either increased or decreased). Therefore, the solution of this invention allows for more precise control of the makeup water conductivity control value, greatly reducing control fluctuations and eliminating the need for prolonged and repeated adjustments, thereby effectively shortening the system control cycle. Furthermore, by repeatedly sampling and continuously updating the current outlet water conductivity value, the method steps of this embodiment of the invention are executed cyclically. This achieves dynamic and uniform mixing of the internal cooling water in the internal cooling water tank to a stable state, without the need for static mixing to uniformity and then adjusting the replenishment water conductivity value. This further shortens the system's control cycle, making the adjustment of the generator's internal cooling water conductivity faster. Moreover, it allows the current outlet water conductivity value to gradually approach the target internal cooling water conductivity value and eventually stabilize within the threshold range of the target internal cooling water conductivity value, thereby making the adjustment of the generator's internal cooling water conductivity more precise.

[0106] Example 3

[0107] Figure 3 This is a flowchart illustrating another generator internal cooling water optimization treatment method provided in Embodiment 3 of the present invention. This embodiment further optimizes the above embodiment by adding the following content:

[0108] When the current outlet water conductivity value is less than the target conductivity value of the internal cooling water, the method further includes:

[0109] Obtain the total water volume of the generator internal cooling water system set by the user and the water replenishment flow rate of the first target internal cooling water replenishment;

[0110] Based on the current internal cooling water ammonia concentration, the target internal cooling water ammonia concentration, the first replenishment water conductivity control value, the total water volume value, and the replenishment water flow rate value, the estimated dosing time from the start of this replenishment until the required dosage is reached is calculated.

[0111] like Figure 3As shown, the generator internal cooling water optimization treatment method provided in this embodiment includes:

[0112] S300: Obtain the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the sampling and detection of the outlet water of the internal cooling water tank.

[0113] S310. Obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0114] S320. When the conductivity difference is greater than the preset threshold, the current effluent conductivity value and the target conductivity value of the internal cooling water are substituted into the first preset function relationship to calculate the current internal cooling water ammonia concentration value corresponding to the current effluent conductivity value and the target internal cooling water ammonia concentration value corresponding to the target internal cooling water conductivity value.

[0115] S330. Obtain the ammonia concentration difference between the current internal cooling water ammonia concentration value and the target internal cooling water ammonia concentration value.

[0116] S340. Substitute the ammonia concentration difference into the first preset function relationship to obtain the water replenishment conductivity gain value corresponding to the ammonia concentration difference.

[0117] S350. Compare the current outflow conductivity value with the target conductivity value of the internal cooling water.

[0118] S360. Based on the comparison results, substitute the water replenishment conductivity gain value and the current outflow conductivity value into the second preset function relationship to obtain the first water replenishment conductivity control value.

[0119] Optionally, the second preset functional relationship is:

[0120]

[0121] Among them, DD 控制 Used to represent the first water replenishment conductivity control value, DD 增益 Used to represent the water replenishment conductivity gain value, DD 当前 Used to represent the current effluent conductivity value, DD 目标 The values ​​used to represent the target conductivity of the internal cooling water are k1 and k2, which are preset gain coefficients and k1>0 and k2>0.

[0122] S370. When the current outflow water conductivity value is less than the target conductivity value of the internal cooling water, obtain the total water volume value of the generator internal cooling water system set by the user and the water replenishment flow rate value of the first target internal cooling water replenishment.

[0123] S380. Based on the current internal cooling water ammonia concentration value, the target internal cooling water ammonia concentration value, the first replenishment water conductivity control value, the total water volume value, and the replenishment water flow rate value, calculate the estimated dosing time from the start of this replenishment until the required dosing amount is reached.

[0124] Understandably, when the conductivity difference is greater than the preset threshold and the current outlet water conductivity is less than the target conductivity of the internal cooling water, the current outlet water conductivity needs to be increased so that the conductivity difference is reduced to below the preset threshold. In other words, ammonia needs to be added to the internal cooling water in the internal cooling water tank to increase the current outlet water conductivity by increasing the ammonia concentration of the original internal cooling water.

[0125] In one embodiment, the step of calculating the estimated dosing time from the start of this dosing to the point when the required dosage is reached, based on the current internal cooling water ammonia concentration, the target internal cooling water ammonia concentration, the first makeup water conductivity control value, the first preset functional relationship, the total water volume value, and the makeup water flow rate value, includes the following steps:

[0126] S3801. Obtain the product of the current internal cooling water ammonia concentration value and the total water volume value to obtain the current internal cooling water ammonia mass.

[0127] S3802. Obtain the product of the target internal cold water ammonia concentration value and the total water volume value to obtain the target internal cold water ammonia mass.

[0128] S3803. Obtain the ammonia mass difference between the target internal cooling water ammonia mass and the current internal cooling water ammonia mass, and determine the ammonia mass difference as the amount of ammonia to be added this time.

[0129] S3804. Substitute the first water replenishment conductivity control value into the first preset function relationship to obtain the water replenishment ammonia concentration control value corresponding to the first water replenishment conductivity control value.

[0130] S3805. Obtain the first ratio of the amount of ammonia to be added to the controlled value of the ammonia concentration in the makeup water, and determine the first ratio as the estimated value of the makeup water volume.

[0131] S3806. Obtain the second ratio of the estimated volume of water replenishment to the estimated flow rate of water replenishment, and determine the second ratio as the estimated time of chemical dosing.

[0132] Understandably, obtaining the estimated dosing time allows for the estimation of the dosing time required for each adjustment in a cyclical operation. It should be noted that the estimated dosing time only estimates the time from the start of the current water replenishment until the required amount of chemical is added. Users can choose to wait until the estimated dosing time has elapsed since the start of the current water replenishment before performing the next adjustment, or they can set the time cycle for each adjustment according to their actual needs.

[0133] S390. The mixing unit controls the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0134] S400, return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0135] In one embodiment, k1 = k2 = 1 is set in the second preset function relationship, and based on the user-set target conductivity value of the internal cooling water and the current outlet conductivity value obtained from any sampling and detection of the outlet water of the internal cooling water tank, the first makeup water conductivity control value and the estimated dosing time are determined by combining the first preset function relationship and the second preset function relationship; after adjusting the current conductivity value of the internal cooling water makeup to the first makeup water conductivity control value, the internal cooling water tank is started to be made up using the obtained first target internal cooling water makeup. When the water replenishment time reaches the estimated time for chemical dosing, water replenishment is stopped, and the current effluent conductivity value is re-acquired to obtain a new conductivity difference value. The new conductivity difference value is compared with a preset threshold. When the new conductivity difference value is less than or equal to the preset threshold, k1 = k2 = 1 is determined as the final preset gain coefficients k1 and k2. When the new conductivity difference value is greater than the preset threshold, the ratio of the target conductivity value of the internal cooling water to the re-acquired current effluent conductivity value is determined as the final preset gain coefficients k1 and k2.

[0136] It is understandable that when the new conductivity difference exceeds the preset threshold, it includes two scenarios: the target conductivity value of the internal cooling water is greater than the newly acquired current effluent conductivity value, and the target conductivity value of the internal cooling water is less than the newly acquired current effluent conductivity value. Therefore, depending on the actual system compensation needs, k1 and k2 can be equal or unequal. It is important to note that when k1 and k2 are unequal, at least two sets of initial values ​​are needed to determine k1 and k2 to ensure either of the above two scenarios occurs; conversely, when k1 and k2 are equal, regardless of which of the two scenarios occurs, only one set of initial values ​​needs to be used to determine k1 and k2.

[0137] This invention, in its embodiments, obtains the ammonia concentration difference between the current internal cooling water ammonia concentration corresponding to the current outlet water conductivity value and the target internal cooling water ammonia concentration corresponding to the target internal cooling water conductivity value. Based on this difference, the required ammonia volume for the current generator internal cooling water system is determined, thus realizing the determination of the makeup water conductivity control value according to the current required ammonia volume. Secondly, after obtaining the first makeup water conductivity control value, the corresponding makeup water ammonia concentration control value is obtained through a first preset functional relationship. Then, based on the required ammonia volume and the makeup water ammonia concentration control value, the estimated makeup water volume is determined, and then combined with the makeup water flow rate value, the estimated dosing time is obtained. By obtaining the estimated dosing time, the required makeup water duration for each cycle can be estimated, and this can be further used to determine the preset gain coefficients k1 and k2 in the second preset functional relationship. This makes the control of the makeup water conductivity control value more precise, greatly reducing control fluctuations and eliminating the need for long-term repeated adjustments, thereby effectively shortening the system control cycle. Furthermore, by repeatedly sampling and continuously updating the current outlet water conductivity value, the method steps of this embodiment of the invention are executed cyclically. This achieves dynamic and uniform mixing of the internal cooling water in the internal cooling water tank to a stable state, without the need for static mixing to uniformity and then adjusting the replenishment water conductivity value. This further shortens the system's control cycle, making the adjustment of the generator's internal cooling water conductivity faster. Moreover, it allows the current outlet water conductivity value to gradually approach the target internal cooling water conductivity value and eventually stabilize within the threshold range of the target internal cooling water conductivity value, thereby making the adjustment of the generator's internal cooling water conductivity more precise.

[0138] Example 4

[0139] Figure 4 This is a schematic diagram of a generator internal cooling water optimization treatment device provided in Embodiment 5 of the present invention. This embodiment is applicable to determining the makeup water conductivity control value based on the current required ammonia addition amount of the internal cooling water, and gradually approaching the target conductivity value of the internal cooling water by cyclically executing the generator internal cooling water optimization treatment method steps described in this embodiment, and finally stabilizing it within the threshold range of the target conductivity value of the internal cooling water. This generator internal cooling water optimization treatment device can be implemented by software and / or hardware, specifically including: a conductivity acquisition module 401, a difference comparison module 402, a first determination module 403, a first makeup water generation module 404, and a cyclic execution module 405.

[0140] The conductivity acquisition module 401 is used to acquire the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the current sampling and detection of the outlet water of the internal cooling water tank.

[0141] The difference comparison module 402 is used to obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold.

[0142] The first determining module 403 is used to determine a first replenishment water conductivity control value based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with a first preset functional relationship and a second preset functional relationship, when the conductivity difference is greater than the preset threshold. The first preset functional relationship represents a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the second preset functional relationship represents a one-to-one correspondence between the first replenishment water conductivity control value and the current outlet water conductivity value, as well as the adjustment amount of the first replenishment water conductivity control value relative to the current outlet water conductivity value.

[0143] The first water replenishment generation module 404 is used to control the mixing unit to adjust the mixing ratio of the two incoming water sources, so as to adjust the current conductivity value of the internal cooling water replenishment to the first water replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank.

[0144] The loop execution module 405 is used to return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

[0145] Based on the above embodiments, the generator internal cooling water optimization treatment device further includes:

[0146] The second determining module is used to determine the current effluent conductivity value as the second replenishment conductivity control value when the conductivity difference is less than or equal to the preset threshold.

[0147] The second water replenishment generation module is used to control the mixing unit to adjust the mixing ratio of the two incoming water sources, so as to adjust the current conductivity value of the internal cooling water replenishment to the second water replenishment conductivity control value, thereby obtaining the second target internal cooling water replenishment, and using the second target internal cooling water replenishment to replenish the internal cooling water tank.

[0148] Based on the above embodiments, the first determining module 403 includes:

[0149] The ammonia concentration calculation unit is used to substitute the current outlet water conductivity value and the target internal cooling water conductivity value into the first preset function relationship to calculate the current internal cooling water ammonia concentration value corresponding to the current outlet water conductivity value and the target internal cooling water ammonia concentration value corresponding to the target internal cooling water conductivity value.

[0150] The concentration difference acquisition unit is used to acquire the ammonia concentration difference between the current internal cooling water ammonia concentration value and the target internal cooling water ammonia concentration value;

[0151] The gain value determination module is used to substitute the ammonia concentration difference into the first preset function relationship to obtain the water replenishment conductivity gain value corresponding to the ammonia concentration difference.

[0152] The first comparison unit is used to compare the current outflow conductivity value with the target conductivity value of the internal cooling water;

[0153] The control value determination unit substitutes the replenishment conductivity gain value and the current outlet conductivity value into the second preset function relationship based on the comparison result to obtain the first replenishment conductivity control value.

[0154] Based on the above embodiments, the second preset functional relationship is:

[0155]

[0156] Among them, DD 控制 Used to represent the first water replenishment conductivity control value, DD 增益 Used to represent the water replenishment conductivity gain value, DD 当前 Used to represent the current effluent conductivity value, DD 目标 The values ​​used to represent the target conductivity of the internal cooling water are k1 and k2, which are preset gain coefficients and k1>0 and k2>0.

[0157] Based on the above embodiments, the generator internal cooling water optimization treatment device further includes:

[0158] The volumetric flow rate acquisition module is used to acquire the total water volume of the generator internal cooling water system set by the user and the replenishment flow rate of the first target internal cooling water replenishment when the current outlet water conductivity value is less than the target internal cooling water conductivity value.

[0159] The time estimation module is used to calculate the estimated time from the start of this water replenishment to when the required amount of chemical is added, based on the current ammonia concentration value of the internal cooling water, the target ammonia concentration value of the internal cooling water, the first water replenishment conductivity control value, the total water volume value, and the water replenishment flow rate value.

[0160] Based on the above embodiments, the time estimation module includes:

[0161] The current ammonia mass acquisition unit is used to obtain the product of the current internal cooling water ammonia concentration value and the total water volume value to obtain the current internal cooling water ammonia mass.

[0162] The target ammonia mass acquisition unit is used to obtain the product of the target internal cold water ammonia concentration value and the total water volume value to obtain the target internal cold water ammonia mass.

[0163] The ammonia to be added determination unit is used to obtain the ammonia mass difference between the target internal cooling water ammonia mass and the current internal cooling water ammonia mass, and to determine the ammonia mass difference as the amount of ammonia to be added this time.

[0164] The concentration control determination unit is used to substitute the first water replenishment conductivity control value into the first preset function relationship to obtain the water replenishment ammonia concentration control value corresponding to the first water replenishment conductivity control value.

[0165] The volume estimation and determination unit is used to obtain a first ratio between the amount of ammonia to be added and the control value of the ammonia concentration in the makeup water, and to determine the first ratio as the estimated volume of the makeup water.

[0166] The time estimation unit is used to obtain a second ratio between the estimated volume of water replenishment and the water replenishment flow rate, and to determine the second ratio as the estimated time for chemical dosing.

[0167] Based on the above embodiments, the generator internal cooling water optimization treatment device further includes:

[0168] The warning value acquisition unit is used to acquire the warning value of the internal cooling water conductivity set by the user, wherein the target conductivity value of the internal cooling water is less than the warning value of the internal cooling water conductivity.

[0169] The second comparison unit is used to compare the current outflow water conductivity value with the internal cooling water conductivity warning value.

[0170] Based on the above embodiments, the difference comparison module 402 includes:

[0171] The difference comparison unit is used to obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity value of the outflow water when the current outflow water conductivity value is less than the internal cooling water conductivity warning value, and to compare the conductivity difference with a preset threshold.

[0172] Based on the above embodiments, the first preset functional relationship is:

[0173] C = 0.0132DD 2 +0.0627DD, DD≥0

[0174] Where C represents the ammonia concentration of the internal cooling water, in milligrams per liter (mg / L); DD represents the conductivity of the internal cooling water, in microsiemens per centimeter (μS / cm).

[0175] The generator internal cooling water optimization treatment device provided in this embodiment of the invention can execute the generator internal cooling water optimization treatment method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0176] Example 5

[0177] Figure 5 This is a schematic diagram of the structure of a generator internal cooling water optimization treatment system provided in Embodiment 5 of the present invention, as shown below. Figure 5 As shown, the generator's internal cooling water optimization system includes:

[0178] Mixing unit 501, flow control unit 502, water replenishment sampling and detection unit 503, internal cooling water tank inlet unit 504, internal cooling water tank 505, water outlet sampling and detection unit 506, circulation adjustment unit 507, control system 508 and memory 509.

[0179] The control system 508 is communicatively connected to the mixing unit 501, the flow control unit 502, the water replenishment sampling and detection unit 503, the internal cooling water tank inlet unit 504, the outlet water sampling and detection unit 506, the circulation adjustment unit 507, and the memory 509.

[0180] The mixing unit 501 is used to introduce two water sources: the water after condensate polishing and ammonia addition, and the water before condensate polishing and ammonia addition. It mixes the two water sources to obtain internal cooling water makeup water. According to the instructions of the control system 508, it adjusts the mixing ratio of the two water sources to adjust the current conductivity value of the internal cooling water makeup water to the makeup water conductivity control value.

[0181] The flow control unit 502 is used to adjust the flow rate of the internal cooling water supply according to the instructions of the control system 508.

[0182] The water replenishment sampling and detection unit 503 is used to obtain the water replenishment conductivity value of the internal cooling water replenishment and send the water replenishment conductivity value to the control system 508.

[0183] The water sampling and detection unit 506 is used to obtain the water conductivity value of the internal cooling water tank 505 and send the water conductivity value to the control system 508.

[0184] The internal cooling water tank inlet unit 504 is used to supply internal cooling water with a conductivity value that reaches the water replenishment conductivity control value to the internal cooling water tank 505 according to the instructions of the control system 508.

[0185] The circulation adjustment unit 507 is used to return the internal cooling water replenishment that has not reached the replenishment water conductivity control value to the mixing unit 501 according to the instructions of the control system 508.

[0186] The memory 509, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the generator internal cooling water optimization treatment method in this embodiment of the invention (e.g., the conductivity acquisition module 401, difference comparison module 402, first determination module 403, first water replenishment generation module 404, and loop execution module 405 in the generator internal cooling water optimization treatment device). The processor in the control system 508 executes various functional applications and data processing of the generator internal cooling water optimization treatment system by running the software programs, instructions, and modules stored in the memory 509, thereby realizing the aforementioned generator internal cooling water optimization treatment method.

[0187] Memory 509 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on terminal usage. Furthermore, memory 509 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, memory 509 may further include memory remotely configured relative to each processor, which can be connected to an optimization device of the local database via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0188] Figure 6 This is an example flowchart of an application process for a generator internal cooling water optimization treatment system provided in Embodiment 5 of the present invention. Figure 6 As shown, in this application example, the user-set internal cooling water conductivity warning value is denoted as DD. 警戒 The target conductivity value of the internal cooling water is denoted as DD. 目标 The current effluent conductivity value is denoted as DD. 当前 The conductivity difference is denoted as ΔDD, the preset threshold is denoted as δ, and the first water replenishment conductivity control value is denoted as DD. 控制1 The second water replenishment conductivity control value is denoted as DD. 控制2 The current ammonia concentration in the internal cooling water is denoted as C. 当前 The ammonia concentration value of the target internal cooling water is denoted as C. 目标 The difference in ammonia concentration is denoted as ΔC, and the gain in conductivity of the makeup water is denoted as DD. 增益 The total water volume is denoted as V. 总 The water replenishment flow rate is denoted as Q, and the estimated dosing time is denoted as T. 加药 The current mass of ammonia in the internal cooling water is denoted as m. 当前 The target internal cooling water ammonia mass is denoted as m. 目标 The amount of ammonia to be added this time is recorded as m. 加氨 The ammonia concentration control value for makeup water is denoted as C.控制 The estimated volume of water replenishment for this project is denoted as V. 补水 .

[0189] For example, DD 警戒 =1.4μS / cm, DD 目标 =0.9μS / cm, δ=0.1μS / cm.

[0190] The generator internal cooling water optimization treatment system provided in this embodiment of the invention can execute the generator internal cooling water optimization treatment method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0191] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for optimizing the internal cooling water of a generator, comprising introducing a mixture of water from two sources—the water after condensate polishing and ammonia addition, and the water before condensate polishing and ammonia addition—as makeup water for the generator's internal cooling water, to adjust the conductivity and pH of the generator's internal cooling water, characterized in that, include: Obtain the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the current sampling and detection of the outlet water of the internal cooling water tank; Obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold. When the conductivity difference is greater than the preset threshold, a first makeup water conductivity control value is determined based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with the first preset function relationship and the second preset function relationship; the current outlet water conductivity value and the target conductivity value of the internal cooling water are substituted into the first preset function relationship respectively to calculate the current ammonia concentration value of the internal cooling water corresponding to the current outlet water conductivity value and the target ammonia concentration value of the internal cooling water corresponding to the target conductivity value of the internal cooling water. Obtain the ammonia concentration difference between the current internal cooling water ammonia concentration value and the target internal cooling water ammonia concentration value; Substituting the ammonia concentration difference into the first preset function relationship, the water replenishment conductivity gain value corresponding to the ammonia concentration difference is obtained; Compare the current outflow conductivity value with the target conductivity value of the internal cooling water; Based on the comparison results, the replenishment conductivity gain value and the current outflow conductivity value are substituted into the second preset function relationship to obtain the first replenishment conductivity control value; The first preset functional relationship is: in, C This indicates the ammonia concentration in the internal cooling water, expressed in milligrams per liter (mg / L). DD The conductivity of the internal cooling water is expressed in microsiemens per centimeter (μS / cm). The second preset functional relationship is: in, DD 控制 Used to represent the first water replenishment conductivity control value. DD 增益 Used to represent the water replenishment conductivity gain value. DD 当前 Used to represent the current effluent conductivity value, DD 目标 Used to represent the target conductivity value of the internal cooling water k 1 、k 2 is the preset gain coefficient and k 1>0、 k 2 > 0; The mixing unit controls the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the first replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank. Return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

2. The generator internal cooling water optimization treatment method according to claim 1, characterized in that, Also includes: When the conductivity difference is less than or equal to the preset threshold, the current effluent conductivity value is determined as the second replenishment conductivity control value. The mixing unit adjusts the mixing ratio of the two incoming water streams to adjust the current conductivity value of the internal cooling water replenishment to the second replenishment conductivity control value, thereby obtaining the second target internal cooling water replenishment, and using the second target internal cooling water replenishment to replenish the internal cooling water tank.

3. The generator internal cooling water optimization treatment method according to claim 1, characterized in that, When the current outlet water conductivity value is less than the target conductivity value of the internal cooling water, the method further includes: Obtain the total water volume of the generator internal cooling water system set by the user and the water replenishment flow rate of the first target internal cooling water replenishment; Based on the current internal cooling water ammonia concentration, the target internal cooling water ammonia concentration, the first replenishment water conductivity control value, the total water volume value, and the replenishment water flow rate value, the estimated dosing time from the start of this replenishment until the required dosage is reached is calculated.

4. The generator internal cooling water optimization treatment method according to claim 3, characterized in that, The estimated dosing time from the start of this water replenishment to when the required dosage is reached is calculated based on the current internal cooling water ammonia concentration, the target internal cooling water ammonia concentration, the first replenishment water conductivity control value, the first preset functional relationship, the total water volume value, and the replenishment water flow rate value. This includes: The current ammonia concentration in the internal cooling water is multiplied by the total water volume to obtain the current ammonia mass in the internal cooling water. The mass of ammonia in the target cold water is obtained by multiplying the target cold water ammonia concentration value by the total water volume value. Obtain the ammonia mass difference between the target internal cooling water ammonia mass and the current internal cooling water ammonia mass, and determine the ammonia mass difference as the amount of ammonia to be added this time; Substituting the first water replenishment conductivity control value into the first preset function relationship, the water replenishment ammonia concentration control value corresponding to the first water replenishment conductivity control value is obtained; Obtain the first ratio of the amount of ammonia to be added to the controlled value of the ammonia concentration in the makeup water, and determine the first ratio as the estimated volume of the makeup water for this operation; Obtain a second ratio between the estimated volume of water replenishment and the estimated flow rate of water replenishment, and determine the second ratio as the estimated time for chemical dosing.

5. The generator internal cooling water optimization treatment method according to claim 1, characterized in that, Before obtaining the conductivity difference between the target conductivity value of the internal cooling water and the current effluent conductivity, and comparing the conductivity difference with a preset threshold, the method further includes: Obtain the user-defined internal cooling water conductivity warning value, wherein the target conductivity value of the internal cooling water is less than the internal cooling water conductivity warning value; Compare the current outflow water conductivity value with the internal cooling water conductivity warning value; Accordingly, the step of obtaining the conductivity difference between the target conductivity value of the internal cooling water and the current effluent conductivity, and comparing the conductivity difference with a preset threshold, includes: When the current outflow conductivity value is less than the internal cooling water conductivity warning value, the conductivity difference between the internal cooling water target conductivity value and the current outflow conductivity is obtained, and the conductivity difference is compared with a preset threshold.

6. A generator internal cooling water optimization treatment device, used to implement the generator internal cooling water optimization treatment method as described in any one of claims 1-5, wherein a mixture of water from two sources—water after condensate polishing and ammonia addition, and water before condensate polishing and ammonia addition—is introduced as generator internal cooling water makeup water to adjust the conductivity and pH of the generator internal cooling water, characterized in that, include: The conductivity acquisition module is used to acquire the target conductivity value of the internal cooling water set by the user and the current conductivity value of the outlet water obtained from the current sampling and detection of the outlet water of the internal cooling water tank. The difference comparison module is used to obtain the conductivity difference between the target conductivity value of the internal cooling water and the current conductivity of the effluent, and compare the conductivity difference with a preset threshold. The first determining module is used to determine a first replenishment water conductivity control value based on the target conductivity value of the internal cooling water and the current outlet water conductivity value, combined with a first preset functional relationship and a second preset functional relationship, when the conductivity difference is greater than the preset threshold. The first preset functional relationship represents a one-to-one correspondence between the ammonia concentration and conductivity of the internal cooling water, and the second preset functional relationship represents a one-to-one correspondence between the first replenishment water conductivity control value and the current outlet water conductivity value, as well as the adjustment amount of the first replenishment water conductivity control value relative to the current outlet water conductivity value. The first water replenishment generation module is used to control the mixing unit to adjust the mixing ratio of the two incoming water sources, so as to adjust the current conductivity value of the internal cooling water replenishment to the first water replenishment conductivity control value, thereby obtaining the first target internal cooling water replenishment, and using the first target internal cooling water replenishment to replenish the internal cooling water tank. The loop execution module is used to return to the operation of obtaining the current effluent conductivity value and obtain a new conductivity difference value until the obtained conductivity difference value is less than or equal to the preset threshold.

7. A generator internal cooling water optimization treatment system, wherein a mixture of water from two sources—condensate polishing and ammonia addition followed by water and condensate polishing and ammonia addition followed by water—is introduced as generator internal cooling water makeup water to adjust the conductivity and pH of the generator internal cooling water, characterized in that, include: Mixing unit, flow control unit, water replenishment sampling and detection unit, internal cooling water tank inlet unit, internal cooling water tank, water outlet sampling and detection unit, circulation adjustment unit, control system and memory; The control system is communicatively connected to the mixing unit, the flow control unit, the water replenishment sampling and detection unit, the internal cooling water tank inlet unit, the outlet water sampling and detection unit, the circulation adjustment unit, and the memory. The mixing unit is used to introduce the two incoming water streams and mix them to obtain the internal cooling water makeup water, and to adjust the mixing ratio of the two incoming water streams according to the instructions of the control system, so as to adjust the current conductivity value of the internal cooling water makeup water to the makeup water conductivity control value. The flow control unit is used to adjust the flow rate of the internal cooling water supply according to the instructions of the control system. The water replenishment sampling and detection unit is used to obtain the water replenishment conductivity value of the internal cooling water replenishment and send the water replenishment conductivity value to the control system; The effluent sampling and detection unit is used to obtain the effluent conductivity value of the internal cooling water tank and send the effluent conductivity value to the control system. The internal cooling water tank inlet unit is used to supply internal cooling water with a conductivity value that reaches the replenishment conductivity control value to the internal cooling water tank according to the instructions of the control system. The circulation adjustment unit is used to return internal cold water with a conductivity value that has not reached the water replenishment conductivity control value to the mixing unit according to the instructions of the control system. The memory is used to store one or more programs; The one or more programs are executed by the control system to implement the generator internal cooling water optimization treatment method as described in any one of claims 1-5.

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