Boiler water quality real-time monitoring method, device, equipment, medium and program product

Abstract

The invention relates to the technical field of boiler water quality real-time monitoring, in particular to a boiler water quality real-time monitoring method, device and equipment, a medium and a program product, the method comprises the following steps: continuously collecting initial water quality samples from a target boiler steam-water pipeline, and carrying out temperature and pressure reduction treatment on the initial water quality samples to obtain water quality samples to be detected; performing waste heat recovery on the to-be-detected water quality sample in a temperature reduction treatment stage, and determining a water quality sample of the target boiler based on the to-be-detected water quality sample after waste heat recovery; calculating a water quality comprehensive index of the water quality sample according to at least two water quality parameters in the water quality sample; a water quality monitoring result corresponding to the target boiler is determined according to the water quality comprehensive index, and the water quality monitoring result at least comprises the water quality risk grade. Therefore, the problems of low detection efficiency, poor real-time performance, single data parameter, difficulty in timely finding water quality mutation, incapability of comprehensively reflecting the water quality state and the like in related technologies are solved.

Description

Technical Field

[0001] The present application relates to the technical field of real-time monitoring of boiler water quality, and in particular to a method, device, equipment, medium and program product for real-time monitoring of boiler water quality. Background Art

[0002] In the related technology, different sampling tools can be used to sample water quality samples at different sampling points in the boiler, and the water quality samples can be manually analyzed experimentally to obtain water quality changes in the water quality samples; different sensors and data transmission and acquisition modules can also be combined to obtain water quality samples in the boiler, and by monitoring certain water quality parameters (such as only monitoring pH or conductivity), traditional manual sampling can be replaced to achieve dynamic management of water quality; it is also possible to sample the water in the boiler and cool it, and automatically discharge sewage when the conductivity signal exceeds the limit, and automatically add medicine when the pH signal exceeds the domain value range.

[0003] However, in related technologies, the manual sampling offline method results in low detection efficiency and poor real-time performance through manual sampling, experiments, and analysis, making it difficult to detect sudden changes in water quality in a timely manner and unable to adapt to the changing operating conditions of the unit under the current deep peak regulation; the online monitoring system collects a single water quality parameter, which cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration; the automatic sewage discharge and dosing system requires precise water quality monitoring equipment and control systems, which increases the cost of equipment installation, commissioning and maintenance. If the control is inaccurate, it may also have a negative impact on the boiler water quality, causing unstable system operation or failure, and urgently needs improvement. Summary of the Invention

[0004] The present application provides a method, device, equipment, medium and program product for real-time monitoring of boiler water quality to solve the problems in related technologies: the offline manual sampling method has low detection efficiency and poor real-time performance, making it difficult to detect sudden changes in water quality in a timely manner and unable to adapt to the current situation of changing operating conditions of units under deep peak regulation; the online monitoring system cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration; the automatic sewage discharge and dosing system increases the cost of equipment installation, commissioning and maintenance, and if the control is inaccurate, it may also have a negative impact on the boiler water quality, resulting in unstable system operation or failure.

[0005] A first aspect of the present application provides a method for real-time monitoring of boiler water quality, comprising the following steps: continuously collecting initial water quality samples from the steam-water pipeline of a target boiler, and performing temperature and pressure reduction treatment on the initial water quality samples to obtain water quality samples to be tested; recovering waste heat from the water quality samples to be tested during the temperature reduction treatment stage, and determining the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery; calculating a comprehensive water quality index of the water quality sample based on at least two water quality parameters in the water quality sample; and determining a water quality monitoring result corresponding to the target boiler based on the comprehensive water quality index, wherein the water quality monitoring result includes at least a water quality risk level.

[0006] Through the above technical solution, initial water quality samples can be collected from the steam-water pipeline of the target boiler and subjected to temperature and pressure reduction treatment to obtain water quality samples to be tested. The water quality samples can be determined by waste heat recovery, and then the water quality monitoring results corresponding to the target boiler can be determined according to the comprehensive water quality index. Through operations such as temperature and pressure reduction treatment and waste heat recovery, the water quality samples can be ensured to be in a stable state, avoiding the impact of temperature or pressure changes, reducing equipment damage and environmental pollution caused by water quality problems, improving the accuracy of water quality assessment, and adapting to water quality assessment under different temperature conditions.

[0007] Optionally, in one embodiment of the present application, calculating the comprehensive water quality index of the water quality sample based on at least two water quality parameters in the water quality sample includes: determining the water quality scores corresponding to different water quality parameters; determining the water quality weights corresponding to different water quality parameters based on the different water quality scores; and calculating the comprehensive water quality index based on the water quality scores and the water quality weights.

[0008] Through the above technical solution, the water quality score and water quality weight can be calculated through the water quality parameters in the water quality sample, and then the corresponding water quality comprehensive index can be calculated. By considering different water quality parameters at the same time, the water quality can be evaluated more accurately, and the corresponding weight can be determined according to the actual situation, so that the water quality comprehensive index can be calculated more accurately, avoiding the one-sidedness of single indicator evaluation, improving the accuracy of evaluation, being simple and easy to implement, and easy to promote and implement.

[0009] Optionally, in one embodiment of the present application, determining the water quality monitoring result corresponding to the target boiler based on the comprehensive water quality index includes: determining the risk interval corresponding to the comprehensive water quality index; based on the risk interval, determining the water quality risk level corresponding to the target boiler; and obtaining the water quality monitoring result based on the water quality risk level.

[0010] Through the above technical solution, the corresponding risk interval can be determined according to different comprehensive water quality indexes, and then the corresponding water quality risk level can be obtained, thereby obtaining water quality monitoring results. The water quality risk level can be determined more intuitively, making the water quality monitoring results easier to understand and accept. The risk level determined according to the comprehensive water quality index has a high degree of accuracy, which helps to accurately assess the water quality status. It can also formulate water quality improvement plans in a targeted manner to improve the efficiency and effectiveness of water quality management.

[0011] Optionally, in one embodiment of the present application, determining the water quality monitoring result corresponding to the target boiler based on the water quality comprehensive index includes: judging whether the water quality comprehensive index meets the preset index condition; if the water quality comprehensive index does not meet the preset index condition, adjusting the values of different water quality parameters in the water quality sample based on the water quality comprehensive index until the water quality comprehensive index meets the preset index condition, so as to obtain the water quality monitoring result according to the water quality comprehensive index; if the water quality comprehensive index meets the preset index condition, obtaining the water quality monitoring result according to the water quality comprehensive index.

[0012] Through the above technical solution, when the comprehensive water quality index does not meet certain index conditions, the values of water quality parameters in the water quality sample can be adjusted until the certain index conditions are met, thereby obtaining water quality monitoring results; when the certain index conditions are met, the water quality monitoring results are obtained directly based on the comprehensive water quality index, the comprehensive water quality index is judged according to certain index conditions, and when the comprehensive water quality index does not meet the conditions, the water quality is improved by adjusting the water quality parameters, thereby ensuring the safety and stability of the water quality and enhancing the pertinence and effectiveness of water quality improvement.

[0013] Optionally, in one embodiment of the present application, the calculation formula of the comprehensive water quality index may be, but is not limited to,:

[0014] WQI=∑(α i ×β i ),

[0015] Among them, α i is the weight of the i-th parameter, β i is the standardized score of the i-th parameter.

[0016] Through the above technical solution, the comprehensive water quality index can be calculated through a clear calculation formula. The formula has a clear structure and is easy to understand. It can accurately evaluate the contribution of various parameters to the comprehensive water quality index, comprehensively reflect the overall status of water quality, and improve the accuracy and comparability of the comprehensive water quality index.

[0017] The second aspect of the present application provides a real-time monitoring device for boiler water quality, comprising: an acquisition module for continuously acquiring initial water quality samples from key nodes of a target boiler's steam-water pipeline; a temperature reduction and pressure reduction module for performing temperature reduction and pressure reduction treatment on the initial water quality samples to obtain water quality samples to be tested; a waste heat recovery module for performing waste heat recovery on the water quality samples to be tested during the temperature reduction treatment stage, so as to determine the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery; a data acquisition module for synchronously acquiring water quality parameter data in the water quality samples through multiple channels; a calculation module for calculating a comprehensive water quality index of the water quality samples based on at least two water quality parameters in the water quality parameter data; and a determination module for determining the water quality monitoring result corresponding to the target boiler based on the comprehensive water quality index, wherein the water quality monitoring result includes at least a water quality risk level.

[0018] Through the above technical solution, initial water quality samples can be collected from the steam-water pipeline of the target boiler and subjected to temperature and pressure reduction treatment to obtain water quality samples to be tested. The water quality samples can be determined by waste heat recovery, and then the water quality monitoring results corresponding to the target boiler can be determined according to the comprehensive water quality index. Through operations such as temperature and pressure reduction treatment and waste heat recovery, the water quality samples can be ensured to be in a stable state, avoiding the impact of temperature or pressure changes, reducing equipment damage and environmental pollution caused by water quality problems, improving the accuracy of water quality assessment, and adapting to water quality assessment under different temperature conditions.

[0019] Optionally, in one embodiment of the present application, the calculation module includes: a first determination unit for determining the water quality scores corresponding to different water quality parameters; a second determination unit for determining the water quality weights corresponding to different water quality parameters based on different water quality scores; and a calculation unit for calculating the comprehensive water quality index based on the water quality scores and the water quality weights.

[0020] Through the above technical solution, the water quality score and water quality weight can be calculated through the water quality parameters in the water quality sample, and then the corresponding water quality comprehensive index can be calculated. By considering different water quality parameters at the same time, the water quality can be evaluated more accurately, and the corresponding weight can be determined according to the actual situation, so that the water quality comprehensive index can be calculated more accurately, avoiding the one-sidedness of single indicator evaluation, improving the accuracy of evaluation, being simple and easy to implement, and easy to promote and implement.

[0021] Optionally, in one embodiment of the present application, the determination module includes: a first determination unit, used to determine the risk interval corresponding to the comprehensive water quality index; a second determination unit, used to determine the water quality risk level corresponding to the target boiler based on the risk interval; and a first generation unit, used to obtain the water quality monitoring result based on the water quality risk level.

[0022] Through the above technical solution, the corresponding risk interval can be determined according to different comprehensive water quality indexes, and then the corresponding water quality risk level can be obtained, thereby obtaining water quality monitoring results. The water quality risk level can be determined more intuitively, making the water quality monitoring results easier to understand and accept. The risk level determined according to the comprehensive water quality index has a high degree of accuracy, which helps to accurately assess the water quality status. It can also formulate water quality improvement plans in a targeted manner to improve the efficiency and effectiveness of water quality management.

[0023] Optionally, in one embodiment of the present application, the determination module includes: a judgment unit, used to judge whether the comprehensive water quality index meets the preset index condition; an adjustment unit, used to adjust the values of different water quality parameters in the water quality sample based on the comprehensive water quality index when the comprehensive water quality index does not meet the preset index condition, until the comprehensive water quality index meets the preset index condition, so as to obtain the water quality monitoring result according to the comprehensive water quality index; a second generation unit, used to obtain the water quality monitoring result according to the comprehensive water quality index when the comprehensive water quality index meets the preset index condition.

[0024] Through the above technical solution, when the comprehensive water quality index does not meet certain index conditions, the values of water quality parameters in the water quality sample can be adjusted until the certain index conditions are met, thereby obtaining water quality monitoring results; when the certain index conditions are met, the water quality monitoring results are obtained directly based on the comprehensive water quality index, the comprehensive water quality index is judged according to certain index conditions, and when the comprehensive water quality index does not meet the conditions, the water quality is improved by adjusting the water quality parameters, thereby ensuring the safety and stability of the water quality and enhancing the pertinence and effectiveness of water quality improvement.

[0025] Optionally, in one embodiment of the present application, the calculation formula of the comprehensive water quality index may be, but is not limited to,:

[0026] WQI=∑(α i ×β i ),

[0027] Among them, α i is the weight of the i-th parameter, β i is the standardized score of the i-th parameter.

[0028] Through the above technical solution, the comprehensive water quality index can be calculated through a clear calculation formula. The formula has a clear structure and is easy to understand. It can accurately evaluate the contribution of various parameters to the comprehensive water quality index, comprehensively reflect the overall status of water quality, and improve the accuracy and comparability of the comprehensive water quality index.

[0029] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the real-time monitoring method for boiler water quality as described in the above embodiment.

[0030] The fourth aspect of the present application provides a computer-readable storage medium, which stores a computer program. When the program is executed by a processor, it implements the above-mentioned real-time monitoring method for boiler water quality.

[0031] The fifth aspect of the present application provides a computer program product, including a computer program, which implements the above-mentioned real-time monitoring method for boiler water quality when executed.

[0032] The embodiment of the present application can perform a temperature reduction and pressure reduction treatment on the initial water quality sample collected from the steam-water pipe of the target boiler to obtain a water quality sample to be tested, and determine the water quality sample of the target boiler through waste heat recovery, thereby calculating the water quality comprehensive index according to different water quality parameters, and determining the water quality monitoring result corresponding to the target boiler. Through operations such as temperature reduction and pressure reduction treatment and waste heat recovery, it can ensure that the water quality sample is in a stable state, avoid the influence of temperature or pressure changes, reduce equipment damage and environmental pollution caused by water quality problems, improve the accuracy of water quality assessment, and adapt to water quality assessment under different temperature conditions. Thus, it solves the problems in the related art that the manual sampling offline method has low detection efficiency and poor real-time performance, is difficult to detect water quality mutations in time, and cannot adapt to the current deep peak regulation unit operating conditions; the online monitoring system cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration; the automatic sewage discharge and dosing system increases the cost of equipment installation, commissioning and maintenance. If the control is inaccurate, it may also have a negative impact on the boiler water quality, resulting in unstable system operation or failure. Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0034] Figure 1 This is a block diagram of a real-time monitoring system for boiler water quality according to one embodiment of the present application;

[0035] Figure 2 This is a flow chart of a method for real-time monitoring of boiler water quality according to an embodiment of the present application;

[0036] Figure 3Schematic diagram of a real-time monitoring device for boiler water quality according to an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the structure of an electronic device provided according to an embodiment of the present application.

[0038] Reference numerals:

[0039] Among them, 10-boiler water quality real-time monitoring system; 101-sampling module, 102-temperature and pressure reduction module, 1021-high-temperature and high-pressure stop valve, 1022-constant temperature heat exchanger, 103-recovery module, 104-data acquisition and processing module, 1041-high-precision sensor, 105-analysis and processing module, 106-wastewater treatment module; 30-boiler water quality real-time monitoring device; 301-acquisition module, 302-waste heat recovery module, 303-calculation module, 304-determination module; 401-memory, 402-processor, 403-communication interface. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0041] The following describes the boiler water quality real-time monitoring method, device, equipment, medium and program product of the embodiments of the present application with reference to the accompanying drawings. The manual sampling offline method mentioned in the above background technology has low detection efficiency and poor real-time performance, making it difficult to detect sudden changes in water quality in a timely manner and unable to adapt to the changing operating conditions of the unit under the current deep peak regulation; the online monitoring system cannot fully reflect the water quality status, the data is isolated, and it lacks intelligent analysis capabilities, making it impossible to predict the trend of water quality deterioration; the automatic blowdown and dosing system increases the cost of equipment installation, commissioning and maintenance. If the control is inaccurate, it may also have a negative impact on the boiler water quality, resulting in unstable system operation or failure. The present application provides a real-time monitoring method for boiler water quality. In this method, the initial water quality sample collected from the steam-water pipe of the target boiler can be subjected to temperature and pressure reduction treatment to obtain a water quality sample to be tested, and the water quality sample of the target boiler can be determined by waste heat recovery, thereby calculating the comprehensive water quality index based on different water quality parameters and determining the water quality monitoring result corresponding to the target boiler. Through operations such as temperature and pressure reduction treatment and waste heat recovery, the water quality sample can be ensured to be in a stable state, avoiding the impact of temperature or pressure changes, reducing equipment damage and environmental pollution caused by water quality problems, improving the accuracy of water quality assessment, and adapting to water quality assessment under different temperature conditions. This solves the problems in related technologies, such as low efficiency and poor real-time performance of offline manual sampling methods, difficulty in timely detecting sudden changes in water quality, and inability to adapt to the changing operating conditions of units under the current deep peak regulation; the online monitoring system cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration; the automatic sewage discharge and dosing system increases the cost of equipment installation, commissioning and maintenance, and if the control is inaccurate, it may also have a negative impact on the boiler water quality, leading to problems such as unstable system operation or failure.

[0042] Before introducing the real-time monitoring method for boiler water quality proposed in the embodiment of the present application, the real-time monitoring system for boiler water quality involved in the embodiment of the present application is first explained.

[0043] Specifically, Figure 1 The figure is a block diagram of a real-time monitoring system for boiler water quality according to one embodiment of the present application.

[0044] like Figure 1 As shown, the boiler water quality real-time monitoring system 10 includes: a sampling module 101, a temperature and pressure reduction module 102, a recovery module 103, a data acquisition and processing module 104, an analysis and processing module 105 and a wastewater treatment module 106.

[0045] Among them, the sampling module 101 is used to deploy the sampler at key nodes such as boiler feed water, boiler water, steam pipelines, etc., or other locations. The specific settings can be made by technical personnel in this field according to actual conditions. This application does not impose specific restrictions. Furthermore, the embodiment of this application uses the sampling module 101 to continuously sample boiler water, feed water, superheated steam, and saturated steam, thereby obtaining water quality samples to be tested.

[0046] The cooling and pressure reduction module 102 is used to deploy target equipment, such as the high-temperature and high-pressure stop valve 1021, the constant temperature heat exchanger 1022, etc., at the sampler outlet, and then cool and reduce the temperature and pressure of the water quality sample to be tested to certain conditions, such as a pressure less than 0.1 MPa, a temperature less than 35°C, etc., to obtain a first water quality sample, thereby ensuring that the online analytical instrument in the cooling and pressure reduction module 102 can operate continuously, reliably and safely, and monitor and analyze by connecting to the data acquisition and processing module 104. Among them, certain conditions can be set by technicians in this field according to actual conditions, and this application does not impose specific restrictions.

[0047] The recovery module 103 is deployed around the cooling and pressure reduction module 102 to perform a secondary cooling treatment on the first water sample to obtain a second water sample. The cooling water flow rate is 25t / h, the pressure is 0.2-0.7MPa, and the temperature is less than 33°C. The continuously cooled cooling water can be heated and processed as follows:

[0048] Option 1: If Figure 1 As shown, it is connected to the screw machine to drive the generator to do work, and after being cooled, it continues to serve as cooling water to participate in the constant temperature heat exchanger 1022 to cool the boiler feed water.

[0049] Option 2: Connect the economizer to participate in the boiler steam-water circulation.

[0050] The data acquisition and processing module 104 is deployed within the temperature and pressure reduction module 102 for processing and includes high-precision sensors 1041, such as a high-precision pH sensor, a dissolved oxygen sensor, a temperature and pressure sensor, and a dissolved hydrogen detection device. This application does not impose specific limitations. Furthermore, in the embodiments of this application, the data acquisition and processing module 104 utilizes multi-channel synchronous data acquisition and a built-in edge computing unit to filter, normalize, and remove outliers before transmitting the data to the analysis and processing module 105.

[0051] The analysis and processing module 105 includes storage of historical data and water quality standard thresholds (such as GB / T 12145 specification) for real-time calculation of the comprehensive water quality index.

[0052] Among them, the calculation of the comprehensive water quality index in the embodiment of the present application integrates the weighted scores of parameters such as pH, dissolved oxygen, chromium ions, conductivity, and dissolved hydrogen. Furthermore, the implementation of the present application can predict the trend of water quality changes based on the machine learning model, identify the water quality risk level (such as acid corrosion, oxygen corrosion), and according to the water quality risk level obtained by the analysis and processing module 105, correspond to different levels of treatment measures, including early warning, emergency shutdown and other post-processing measures, and trigger the alarm system in a graded manner.

[0053] Wastewater treatment module 106 is used to process water quality composite indices that do not meet certain index conditions until the water quality composite index meets the certain index conditions. The treated clean water is then reused for boiler feed water. This closed-loop management achieves near-zero wastewater discharge, reduces operating costs, and improves the environmental compliance of the power plant. The certain index conditions can be set by those skilled in the art based on actual circumstances and are not specifically limited in this application.

[0054] Specifically, Figure 2 This is a flow chart of a method for real-time monitoring of boiler water quality provided according to an embodiment of the present application.

[0055] like Figure 2 As shown, the boiler water quality real-time monitoring method includes the following steps:

[0056] In step S201, initial water quality samples are continuously collected from the steam-water pipe of the target boiler, and the initial water quality samples are subjected to temperature and pressure reduction treatment to obtain water quality samples to be tested.

[0057] It can be understood that the embodiments of the present application can set different sampling points in the target boiler and then use different sampling equipment to collect initial water quality samples from the steam-water pipe of the target boiler. The sampling equipment can include but is not limited to samplers, etc., and can be specifically set by technicians in this field according to actual conditions. This application does not impose specific restrictions.

[0058] As a possible implementation method, the embodiment of the present application can collect an initial water quality sample from the steam-water pipe of the target boiler, and perform temperature and pressure reduction treatment on the initial water quality sample to obtain a water quality sample to be tested.

[0059] For example, if Figure 1 As shown, the embodiment of the present application can deploy the sampler at key nodes such as the feed water, boiler water, and steam pipelines in the target boiler, and then use the sampler to continuously sample the boiler water, feed water, superheated steam, and saturated steam to obtain the water quality sample to be tested.

[0060] Furthermore, the embodiment of the present application utilizes a cooling and decompression module to perform cooling and decompression processing on the initial water quality sample, reducing the pressure to less than 0.1 MPa and the temperature to less than 35° C., thereby obtaining a water quality sample to be tested.

[0061] In step S202 , waste heat is recovered from the water quality sample to be tested during the temperature reduction treatment stage, so as to determine the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery.

[0062] As a possible implementation method, the embodiment of the present application can recover the waste heat of the water quality sample to be tested, thereby obtaining the water quality sample to be tested after waste heat recovery, and use the water quality sample to be tested after waste heat recovery to determine the water quality sample of the target boiler.

[0063] For example, combining Figure 1 As shown, the embodiment of the present application can utilize a recovery module with a cooling water flow rate of 25t / h and a pressure of 0.2-0.7MPa to recover the waste heat of the water quality sample to be tested, thereby reducing the water quality temperature to below 33°C, obtaining the water quality sample to be tested after waste heat recovery, and determining the water quality sample of the target boiler through the water quality sample to be tested after waste heat recovery.

[0064] In step S203 , a comprehensive water quality index of the water sample is calculated according to at least two water quality parameters in the water sample.

[0065] It can be understood that the water quality parameters in the embodiment of the present application may include, but are not limited to, parameters such as pH, dissolved oxygen, chromium ions, conductivity, dissolved hydrogen, etc., and also include parameters in the stored historical data and water quality standard thresholds (such as GB / T 12145 specification). The specific settings can be made by technicians in this field according to actual conditions, and this application does not impose specific restrictions.

[0066] As a possible implementation method, the embodiment of the present application can first obtain water quality parameters in the water quality sample, and then calculate the comprehensive water quality index of the water quality sample based on different water quality parameters.

[0067] Optionally, in one embodiment of the present application, calculating a comprehensive water quality index of a water quality sample based on at least two water quality parameters in the water quality sample includes: determining water quality scores corresponding to different water quality parameters; determining water quality weights corresponding to different water quality parameters based on different water quality scores; and calculating the comprehensive water quality index based on the water quality scores and water quality weights. The calculation formula for the comprehensive water quality index may be, but is not limited to, the following:

[0068] WQI=∑(α i ×β i ),

[0069] Among them, α i is the weight of the i-th parameter, β i is the standardized score of the i-th parameter.

[0070] As a possible implementation method, the embodiment of the present application can first obtain the water quality scores corresponding to the water quality parameters, and then determine the corresponding water quality weights according to different water quality scores, thereby calculating the water quality comprehensive index. Among them, the calculation formula of the water quality comprehensive index can be but is not limited to:

[0071] WQI=∑(α i ×β i ),

[0072] Among them, α i is the weight of the i-th parameter (Σα i =1), β i is the standardized score of the i-th parameter (0 to 100 points) (refer to the national or industry standards corresponding to the specific parameters).

[0073] Illustratively, the water quality sample in the embodiment of the present application may but is not limited to including water quality parameters such as pH, dissolved oxygen, chromium ions, conductivity and dissolved hydrogen. Furthermore, the embodiment of the present application determines that the water quality score corresponding to pH is the first score, the water quality score corresponding to dissolved oxygen is the second score, the water quality score corresponding to chromium ions is the third score, the water quality score corresponding to conductivity is the fourth score, and the water quality score corresponding to dissolved hydrogen is the fifth score. Then, based on the different water quality scores, the water quality weight corresponding to pH is determined to be the first weight, the water quality weight corresponding to dissolved oxygen is the second weight, the water quality weight corresponding to chromium ions is the third weight, the water quality weight corresponding to conductivity is the fourth weight, and the water quality weight corresponding to dissolved hydrogen is the fifth weight. Furthermore, the embodiment of the present application uses the calculation formula of the water quality comprehensive index to calculate the corresponding water quality comprehensive index.

[0074] For example, the embodiment of the present application can determine the β i (pH) = 7.0, corresponding to a standardized score of 92, β i (Conductivity) = 800 μS / cm, corresponding to a normalized fraction of 75, β i (dissolved oxygen) = 6 mg / L, corresponding to a standardized fraction of 78, β i (chromium ion) = 0.02 mg / L, corresponding to a standardized score of 63. Then, the embodiment of the present application can determine the weights corresponding to pH, conductivity, dissolved oxygen, and chromium ions, and their values can be α1 = 0.2, α2 = 0.2, α3 = 0.3, and α4 = 0.3. Then, the embodiment of the present application can calculate WQI = 75.7, where WQI = 0.2×92+0.2×75+0.3×78+0.3×63=75.7.

[0075] In step S204, the water quality monitoring result corresponding to the target boiler is determined according to the comprehensive water quality index, wherein the water quality monitoring result at least includes the water quality risk level.

[0076] As one possible implementation method, the present application embodiment can determine the water quality risk level corresponding to the target boiler based on the calculated water quality comprehensive index, thereby obtaining water quality monitoring results. The water quality monitoring results may include, but are not limited to, the water quality risk level, etc., and this application does not impose specific restrictions.

[0077] For example, the embodiment of the present application can determine the corresponding water quality risk level according to different water quality comprehensive indexes, and then obtain the water quality monitoring results of the target boiler.

[0078] Optionally, in one embodiment of the present application, the water quality monitoring result corresponding to the target boiler is determined based on the comprehensive water quality index, including: determining the risk interval corresponding to the comprehensive water quality index; based on the risk interval, determining the water quality risk level corresponding to the target boiler; based on the water quality risk level, obtaining the water quality monitoring result.

[0079] It can be understood that the embodiment of the present application can divide the risk interval into 90<WQI≤100, 80<WQI≤90, 70<WQI≤80, 60<WQI≤70 and WQI≤60 according to the comprehensive water quality index, and then take corresponding treatment measures according to different wind direction intervals, which may include but are not limited to early warning, emergency shutdown, etc. This application does not make specific restrictions, as shown in Table 1, where Table 1 is a correspondence table of risk intervals and water quality risk levels provided according to an embodiment of the present application.

[0080] Table 1

[0081]

[0082] During actual implementation, the embodiment of the present application can first determine the risk interval corresponding to the comprehensive water quality index, and then determine the water quality risk level of the target boiler based on the risk interval, thereby obtaining the water quality monitoring results.

[0083] For example, in a water sample according to the embodiment of the present application, β i (pH) = 7.0, corresponding to a standardized score of 92, β i (Conductivity) = 800 μS / cm, corresponding to a normalized fraction of 75, β i (dissolved oxygen) = 6 mg / L, corresponding to a standardized fraction of 78, β i (Chromium ion) = 0.02 mg / L, the corresponding standardized score is 63, α1 = 0.2, α2 = 0.2, α3 = 0.3, α4 = 0.3, WQI = 75.7, which is in the risk range 70 < WQI ≤ 80. The corresponding water quality risk level is determined to be parameter adjustment, and the corresponding water quality monitoring results are determined according to the corresponding water quality risk level, such as executing parameter adjustment, not executing parameter adjustment, etc., this application does not make specific restrictions.

[0084] Optionally, in one embodiment of the present application, the water quality monitoring result corresponding to the target boiler is determined based on the comprehensive water quality index, including: judging whether the comprehensive water quality index meets the preset index condition; if the comprehensive water quality index does not meet the preset index condition, then adjusting the values of different water quality parameters in the water quality sample based on the comprehensive water quality index until the comprehensive water quality index meets the preset index condition, so as to obtain the water quality monitoring result according to the comprehensive water quality index; if the comprehensive water quality index meets the preset index condition, then obtaining the water quality monitoring result according to the comprehensive water quality index.

[0085] In some embodiments, the embodiments of the present application can first determine whether the comprehensive water quality index meets certain index conditions, and when the certain index conditions are not met, adjust the values of different water quality parameters in the water quality sample, such as pH value, oxygen solubility of dissolved oxygen, valence state of chromium ions, conductivity and hydrogen solubility of dissolved hydrogen, etc. This application does not make specific restrictions until the comprehensive water quality index meets certain index conditions, and then obtain the water quality monitoring results; when the certain index conditions are met, the water quality monitoring results are obtained directly based on the comprehensive water quality index.

[0086] For example, if Figure 1 As shown, the embodiment of the present application can use the wastewater treatment module 106 to process the comprehensive index that does not meet certain index conditions until the comprehensive water quality index meets certain index conditions, and reuse the treated clean water for boiler water replenishment, thereby achieving near-zero wastewater discharge through closed-loop management, while reducing operating costs and improving the environmental compliance of the power station.

[0087] According to the real-time monitoring method of boiler water quality proposed in the embodiment of the present application, the initial water quality sample collected from the steam-water pipe of the target boiler can be subjected to temperature and pressure reduction treatment to obtain the water quality sample to be tested, and the water quality sample of the target boiler can be determined by waste heat recovery, so as to calculate the water quality comprehensive index according to different water quality parameters and determine the water quality monitoring result corresponding to the target boiler. Through operations such as temperature and pressure reduction treatment and waste heat recovery, it is possible to ensure that the water quality sample is in a stable state, avoid the influence of temperature or pressure changes, reduce equipment damage and environmental pollution caused by water quality problems, improve the accuracy of water quality assessment, and adapt to water quality assessment under different temperature conditions. Thus, the problems of manual sampling offline method in related technologies, such as low detection efficiency and poor real-time performance, difficulty in timely detection of water quality mutations, and inability to adapt to the current deep peak regulation of the unit operating conditions, the online monitoring system cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration, the automatic sewage discharge and dosing system increases the cost of equipment installation, commissioning and maintenance, and if the control is inaccurate, it may also have a negative impact on the boiler water quality, resulting in unstable system operation or failure.

[0088] Next, the real-time monitoring device for boiler water quality proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0089] Figure 3 This is a block diagram of a real-time monitoring device for boiler water quality provided according to an embodiment of the present application.

[0090] like Figure 3 As shown, the boiler water quality real-time monitoring device 30 includes: a collection module 301, a temperature reduction and pressure reduction module 302, a waste heat recovery module 303, a data collection module 304, a calculation module 305 and a determination module 306.

[0091] The collection module 301 is used to continuously collect initial water quality samples from key nodes of the steam-water pipeline of the target boiler.

[0092] The temperature reduction and pressure reduction module 302 is used to reduce the temperature and pressure of the initial water quality sample to obtain a water quality sample to be tested.

[0093] The waste heat recovery module 303 is used to recover waste heat from the water quality sample to be tested during the temperature reduction treatment stage, so as to determine the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery.

[0094] The data acquisition module 304 is used to synchronously acquire water quality parameter data from water quality samples through multiple channels.

[0095] The calculation module 305 is configured to calculate a comprehensive water quality index of the water sample according to at least two water quality parameters in the water quality parameter data.

[0096] The determination module 306 is configured to determine the water quality monitoring result corresponding to the target boiler according to the comprehensive water quality index, wherein the water quality monitoring result at least includes a water quality risk level.

[0097] Optionally, in one embodiment of the present application, the calculation module 305 includes: a first determination unit, a second determination unit and a calculation unit.

[0098] The first determining unit is used to determine the water quality scores corresponding to different water quality parameters.

[0099] The second determining unit is configured to determine water quality weights corresponding to different water quality parameters based on different water quality scores.

[0100] The calculation unit is used to calculate the comprehensive water quality index according to the water quality score and the water quality weight.

[0101] Optionally, in one embodiment of the present application, the determination module 306 includes: a first determination unit, a second determination unit and a first generation unit.

[0102] Among them, the first determination unit is used to determine the risk range corresponding to the comprehensive water quality index.

[0103] The second determining unit is configured to determine a water quality risk level corresponding to the target boiler based on the risk interval.

[0104] The first generating unit is used to obtain water quality monitoring results based on the water quality risk level.

[0105] Optionally, in one embodiment of the present application, the determination module 306 includes: a judgment unit, an adjustment unit, and a second generation unit.

[0106] The judgment unit is used to judge whether the comprehensive water quality index meets the preset index conditions.

[0107] The adjustment unit is used to adjust the values of different water quality parameters in the water quality sample based on the comprehensive water quality index when the comprehensive water quality index does not meet the preset index conditions, until the comprehensive water quality index meets the preset index conditions, so as to obtain water quality monitoring results according to the comprehensive water quality index.

[0108] The second generating unit is used to obtain a water quality monitoring result according to the comprehensive water quality index when the comprehensive water quality index meets a preset index condition.

[0109] Optionally, in one embodiment of the present application, the calculation formula of the comprehensive water quality index may be, but is not limited to,:

[0110] WQI=∑(α i ×β i ),

[0111] Among them, α i is the weight of the i-th parameter, β i is the standardized score of the i-th parameter.

[0112] It should be noted that the above explanation of the embodiment of the boiler water quality real-time monitoring method is also applicable to the boiler water quality real-time monitoring device of this embodiment, and will not be repeated here.

[0113] According to the boiler water quality real-time monitoring device proposed in the embodiment of the present application, the initial water quality sample collected from the steam-water pipe of the target boiler can be subjected to temperature and pressure reduction treatment to obtain the water quality sample to be tested, and the water quality sample of the target boiler can be determined by waste heat recovery, so as to calculate the water quality comprehensive index according to different water quality parameters and determine the water quality monitoring result corresponding to the target boiler. Through operations such as temperature and pressure reduction treatment and waste heat recovery, it can ensure that the water quality sample is in a stable state, avoid the influence of temperature or pressure changes, reduce equipment damage and environmental pollution caused by water quality problems, improve the accuracy of water quality assessment, and adapt to water quality assessment under different temperature conditions. Thus, it solves the problems in the related art that the manual sampling offline method has low detection efficiency and poor real-time performance, is difficult to detect water quality mutations in time, and cannot adapt to the current deep peak regulation unit operating conditions; the online monitoring system cannot fully reflect the water quality status, the data is isolated, lacks intelligent analysis capabilities, and cannot predict the trend of water quality deterioration; the automatic sewage discharge and dosing system increases the cost of equipment installation, commissioning and maintenance. If the control is inaccurate, it may also have a negative impact on the boiler water quality, resulting in unstable system operation or failure.

[0114] Figure 4 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. The electronic device may include:

[0115] Memory 401 , processor 402 , and computer programs stored in the memory 401 and executable on the processor 402 .

[0116] When the processor 402 executes the program, the real-time monitoring method for boiler water quality provided in the above embodiment is implemented.

[0117] Furthermore, the electronic device further includes:

[0118] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0119] The memory 401 is used to store computer programs that can be run on the processor 402 .

[0120] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0121] If the memory 401, the processor 402, and the communication interface 403 are implemented independently, the communication interface 403, the memory 401, and the processor 402 can be connected to each other via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0122] Optionally, in a specific implementation, if the memory 401 , the processor 402 and the communication interface 403 are integrated on a chip, the memory 401 , the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0123] The processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0124] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for real-time monitoring of boiler water quality.

[0125] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed, implements the above-mentioned method for real-time monitoring of boiler water quality.

[0126] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0127] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "N" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0128] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing a custom logical function or process step, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed in a different order than shown or discussed, including performing functions in a substantially simultaneous manner or in a reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0129] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or N wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program can be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing it in other suitable ways as necessary, and then storing it in a computer memory.

[0130] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiment, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented using hardware, as in another embodiment, it can be implemented using any one or a combination of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0131] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0132] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0133] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A method for real-time monitoring of boiler water quality, characterized in that: The following steps are involved: Continuously collecting initial water quality samples from the steam-water pipe of the target boiler, and subjecting the initial water quality samples to a temperature and pressure reduction process to obtain water quality samples to be tested; Recovering waste heat from the water quality sample to be tested during the temperature reduction treatment stage, so as to determine the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery; Calculating a comprehensive water quality index of the water sample based on at least two water quality parameters in the water sample; The water quality monitoring result corresponding to the target boiler is determined according to the comprehensive water quality index, wherein the water quality monitoring result at least includes a water quality risk level.

2. The method according to claim 1, characterized in that Calculating the comprehensive water quality index of the water sample based on at least two water quality parameters in the water sample includes: Determine the water quality scores corresponding to different water quality parameters; Based on different water quality scores, determine the water quality weights corresponding to different water quality parameters; The water quality comprehensive index is calculated according to the water quality score and the water quality weight.

3. The method according to claim 1, characterized in that Determining the water quality monitoring result corresponding to the target boiler according to the comprehensive water quality index includes: Determining the risk range corresponding to the comprehensive water quality index; Determining a water quality risk level corresponding to the target boiler based on the risk interval; Based on the water quality risk level, the water quality monitoring result is obtained.

4. The method according to claim 1, wherein Determining the water quality monitoring result corresponding to the target boiler according to the comprehensive water quality index includes: Determining whether the comprehensive water quality index meets a preset index condition; If the water quality comprehensive index does not meet the preset index condition, adjusting the values of different water quality parameters in the water quality sample based on the water quality comprehensive index until the water quality comprehensive index meets the preset index condition, so as to obtain the water quality monitoring result according to the water quality comprehensive index; If the comprehensive water quality index meets the preset index condition, the water quality monitoring result is obtained according to the comprehensive water quality index.

5. The method according to claim 1, wherein The calculation formula of the comprehensive water quality index is: WQI=∑(α i ×β i ), Among them, α i is the weight of the i-th parameter, β i is the standardized score of the i-th parameter.

6. A real-time monitoring device for boiler water quality, characterized in that: include: The acquisition module is used to continuously collect initial water quality samples from key nodes of the target boiler steam-water pipeline; A temperature reduction and pressure reduction module is used to reduce the temperature and pressure of the initial water quality sample to obtain a water quality sample to be tested; a waste heat recovery module, configured to recover waste heat from the water quality sample to be tested during the temperature reduction treatment stage, so as to determine the water quality sample of the target boiler based on the water quality sample to be tested after waste heat recovery; A data acquisition module, used for synchronously acquiring water quality parameter data from the water quality sample through multiple channels; a calculation module, configured to calculate a comprehensive water quality index of the water sample based on at least two water quality parameters in the water quality parameter data; A determination module is used to determine the water quality monitoring result corresponding to the target boiler according to the water quality comprehensive index, wherein the water quality monitoring result at least includes a water quality risk level.

7. The device according to claim 6, characterized in that The computing module includes: A first determining unit, configured to determine water quality scores corresponding to different water quality parameters; A second determining unit is used to determine water quality weights corresponding to different water quality parameters based on different water quality scores; A calculation unit is used to calculate the water quality comprehensive index according to the water quality score and the water quality weight.

8. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for real-time monitoring of boiler water quality according to any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the real-time monitoring method for boiler water quality according to any one of claims 1 to 5.

10. A computer program product, characterized in that The invention comprises a computer program, which, when executed, is used to implement the real-time monitoring method for boiler water quality according to any one of claims 1 to 5.

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