System and method for dynamically adjusting water volume during flushing of water supply pipe network

Abstract

The invention relates to the technical field of water supply pipe network flushing water quantity control, and discloses a water quantity dynamic adjusting system and method for a water supply pipe network during flushing, and the method comprises the following steps: comprehensively considering various factors such as pipe section length, bearing pressure, non-flushing interval duration, chemical components of flushing water quality and corrosion characteristics of the water supply pipe network; and a dynamically adjusted flushing model is established. By calculating the bearing pressure and the length of each pipe section, the number of times of flushing and the amount of water for flushing each time are determined; then, according to the non-flushing interval duration and the water quality condition, the preset water quantity is determined; then, further calculating an adjustment coefficient by analyzing the influence of chemical components of the flushing water on the corrosion speed of the pipe section; and finally, based on the adjustment coefficient, the total water consumption is dynamically adjusted, it is ensured that the preset cleaning effect can be achieved in the flushing process, resource waste and excessive corrosion can be avoided, and the efficiency and safety of pipe network cleaning and maintenance are optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of water volume control for flushing a water supply network, and in particular to a system and method for dynamically adjusting water volume during flushing of a water supply network. Background Art

[0002] With the acceleration of urbanization, the water supply network is an important part of the urban water supply system. Its operating efficiency and water quality safety directly affect the quality of life and public health of residents. Due to long-term water transportation, certain sediments, impurities and harmful substances will accumulate in the pipelines. These substances not only affect the water quality, but also may corrode the pipelines and reduce their service life. Therefore, regular flushing of the pipelines is an important measure to ensure water quality and extend the service life of the pipelines.

[0003] Most existing flushing methods for water supply networks rely on fixed time intervals or preset water volumes for flushing. However, this method does not fully take into account the actual conditions of each pipe segment, such as pipe segment length, flow rate, non-flushing time, pipe segment material, and water quality changes, which may lead to unreasonable water use and affect the flushing effect. Too much water may cause a waste of resources, while too little water may not achieve the expected cleaning effect and may even aggravate the corrosion problem of the pipeline.

[0004] Therefore, how to dynamically adjust the amount of water during flushing based on the actual operation of the pipeline and water quality monitoring data has become a key technical issue in optimizing water supply network management. Summary of the invention

[0005] In view of this, the present invention proposes a system and method for dynamically adjusting the water volume during flushing of a water supply network, aiming to solve the problem that the existing water supply network flushing method fails to fully consider the actual situation of the pipe section, resulting in unreasonable use of flushing water, thereby affecting the flushing effect, possibly causing waste of resources or aggravating pipeline corrosion.

[0006] The present invention proposes a method for dynamically adjusting the amount of water during flushing of a water supply network, comprising: Determine the number of flushing times when flushing the water supply network and the amount of water corresponding to each flushing number based on the distribution length of the water supply network and the bearing pressure of each pipe section; Obtaining the duration of each pipe section not being flushed, and determining the preset water volume for flushing each pipe section according to the duration of each pipe section not being flushed; Obtaining the chemical material of the water used for flushing, and substituting the chemical material into a pre-established pipe cleaning model to obtain the corrosion rate of the water used for flushing; The total water consumption during flushing of the water supply network is determined based on the number of flushing times and the water volume corresponding to each flushing number. The adjustment coefficient is determined based on the preset water volume during flushing of each pipe section and the corrosion rate of the water used during flushing. The total water consumption during flushing of the water supply network is adjusted based on the adjustment coefficient.

[0007] Further, based on the distribution length of the water supply network and the bearing pressure of each pipe section, the number of flushing times when flushing the water supply network is determined includes: Obtain the length and material strength information of each pipe segment, and determine the bearing pressure of each pipe segment according to the length and material strength information: ; Wherein, P is the bearing pressure of the pipe segment, z is the weight coefficient, L is the length of the pipe segment, t is the wall thickness of the pipe segment, σ is the material strength of the pipe segment, D is the outer diameter of the pipe segment, and Sf is the fatigue strength of the material of the pipe segment; The minimum bearing pressure between the pipe sections is obtained, the maximum length between the pipe sections is obtained, and the number of flushing times when flushing the water supply network is determined according to the relationship between the minimum bearing pressure and the maximum length: ; Among them, N is the number of flushing times when flushing the water supply network, Lmax is the maximum length between each of the pipe sections, and Pmin is the minimum bearing pressure between each of the pipe sections.

[0008] Further, based on the distribution length of the water supply network and the bearing pressure of each pipe section, the water volume corresponding to each flushing number when flushing the water supply network is determined, including: The pressure loss and flow rate during one flushing in the water supply network, and the density of water used during flushing, are obtained, and the water volume corresponding to each flushing number is determined according to the pressure loss and flow rate during one flushing, the density of water used during flushing, the distribution length, and the average inner diameter between each pipe section: ; Among them, Q is the water volume corresponding to the number of flushing times, d is the average inner diameter, △L is the distribution length, △P is the pressure loss during one flushing in the water supply network, ρ is the density of water used for flushing, u is the flow rate during one flushing in the water supply network, and R is the average bearing pressure between the pipe sections.

[0009] Furthermore, when determining the preset water volume for flushing each pipe section according to the duration of the non-flushing interval of each pipe section, it includes: Obtaining the average impurity content and the average flow rate of the water transported in each of the pipe sections; The length and inner diameter of each pipe section are obtained, and the preset water volume of each pipe section is determined according to the length and inner diameter of the pipe section, the average impurity content and the average transportation flow rate: J = L·c·x·v·b; Among them, J is the preset water volume of the pipe section, c is the inner diameter of the pipe section, x is the average impurity content, v is the average transportation flow rate, and b is the duration of the unflushed interval of the pipe section.

[0010] Furthermore, the pre-established pipe cleaning model includes: Obtain the material of each pipe section, the chemical material of each flushing water, and the corrosion rate of the pipe section material at different concentrations, and establish a corrosion correlation equation; Obtaining a distance metric between each of the corrosion correlation equations based on the corrosion rate, and establishing a distance matrix for each of the chemical materials according to the distance metric; Iteratively clustering the distance matrix, and obtaining the corrosion feature vector of each chemical material after iterative clustering; The pipe section cleaning model is established based on the corrosion feature vectors of each of the chemical materials.

[0011] Furthermore, when determining the adjustment coefficient according to the preset water volume during flushing of each pipe section and the corrosion rate of the water used during flushing, it includes: Determine the preset total water volume of the water supply network according to the preset water volume when flushing each pipe section, and determine the adjustment coefficient according to the relationship between the preset total water volume and the total water consumption; When the preset total water volume is consistent with the total water volume, the adjustment coefficient is determined to be A0; When the preset total water volume is inconsistent with the total water volume, the absolute value of the water volume difference between the preset total water volume and the total water volume is obtained, and the adjustment coefficient is determined according to the absolute value of the water volume difference.

[0012] Furthermore, when determining the adjustment coefficient according to the absolute value of the water volume difference, it includes: The adjustment coefficient is determined according to the relationship between the absolute value of the water consumption difference and the pre-configured first preset water consumption difference and the second preset water consumption difference: When the absolute value of the water consumption difference is lower than the first preset water consumption difference, the adjustment coefficient is determined to be A0; When the absolute value of the water consumption difference is greater than or equal to the first preset water consumption difference, and the absolute value of the water consumption difference is less than the second preset water consumption difference, the adjustment coefficient is determined to be A1; When the absolute value of the water consumption difference is greater than or equal to the second preset water consumption difference, the adjustment coefficient is determined to be A2; Among them, the first preset water consumption difference is smaller than the second preset water consumption difference, and A0<A1<A2<1.

[0013] Further, when the adjustment coefficient is determined to be Ai, i=0, 1, 2, it includes: Determining whether the adjustment coefficient Ai is to be corrected according to the corrosion rate of the water used during flushing and a preset corrosion rate; When the corrosion rate is lower than the preset corrosion rate, it is determined that the adjustment coefficient Ai is not corrected; When the corrosion rate is higher than or equal to the preset corrosion rate, a correction coefficient is determined according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, and the adjustment coefficient Ai is corrected according to the correction coefficient.

[0014] Furthermore, when determining the correction coefficient according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, it includes: The correction coefficient is determined according to the relationship between the corrosion rate difference and the pre-configured first preset corrosion rate difference and the second preset corrosion rate difference: When the corrosion rate difference is lower than the first preset corrosion rate difference, the correction coefficient is determined to be S1; When the corrosion rate difference is higher than or equal to the first preset corrosion rate difference, and the corrosion rate difference is lower than the second preset corrosion rate difference, the correction coefficient is determined to be S2; When the corrosion rate difference is higher than or equal to the second preset corrosion rate difference, the correction coefficient is determined to be S3; The first preset corrosion rate difference is smaller than the second preset corrosion rate difference, and S1<S2<S3<1.

[0015] Compared with the prior art, the beneficial effect of the present invention is that in the process of flushing the water supply network, the traditional method usually relies on fixed time intervals or preset water volume for flushing, which is difficult to accurately adjust according to the specific operating conditions of different pipe sections, resulting in waste of water resources or insufficient flushing effect. The present invention realizes more efficient and accurate pipe network maintenance by accurately and dynamically adjusting the flushing water volume. By comprehensively considering multi-dimensional factors such as the physical properties of the pipe section, the bearing pressure, the unflushed interval, the water quality parameters and the corrosive components, the amount of water required for flushing is dynamically calculated. In practical applications, the PIG device can run along the pipeline and monitor the pressure, sediment, pipe wall condition and water quality changes in the pipe section in real time, thereby providing a more accurate decision-making basis. Specifically, the method combines the data feedback of the PIG device, dynamically adjusts the flushing frequency and water volume according to the distribution length and bearing pressure of the pipe section, and ensures that each pipe section achieves the best flushing effect with the least water consumption. In addition, compared with the traditional simple water flow flushing method, the PIG technology effectively reduces the accumulation of pollutants in the pipeline by physically removing the attachments on the pipe wall, and improves the flushing efficiency. Combined with real-time water quality monitoring data, this method can also dynamically optimize the flushing water volume according to the non-flushing interval and water quality changes to ensure that the differentiated cleaning needs of different pipe sections are met. At the same time, when dealing with pipeline corrosion problems, this method uses the data collected by the PIG device to analyze the chemical composition of the flushing water and optimizes it in combination with the corrosion rate calculation model. By introducing the corrosion adjustment coefficient, the impact of water quality on the pipeline during the flushing process can be effectively controlled, and the adverse effects of corrosive components on the pipeline life can be reduced, thereby extending the service life of the pipeline.

[0016] On the other hand, the present application also provides a system for dynamically adjusting the amount of water used for flushing a water supply network, comprising: An acquisition module is configured to acquire the duration of each pipe section not being flushed, the acquisition module is further configured to acquire the distribution length of the water supply network and the bearing pressure of each pipe section, and the acquisition module is further configured to acquire the chemical material of the water used for flushing; An evaluation module is electrically connected to the acquisition module, and the evaluation module is configured to determine the number of flushing times when flushing the water supply network and the water volume corresponding to each flushing number based on the distribution length of the water supply network and the bearing pressure of each pipe segment; the evaluation module is also configured to determine the preset water volume when flushing each pipe segment according to the interval length of each pipe segment that has not been flushed; the evaluation module is also configured to substitute the chemical material into a pre-established pipe segment cleaning model to obtain the corrosion rate of the water used during the flushing; The central control module is electrically connected to the evaluation module, and is configured to determine the total water consumption when flushing the water supply network according to the number of flushing times and the water volume corresponding to each flushing number, determine the adjustment coefficient according to the preset water volume when flushing each pipe section and the corrosion rate of the water used during flushing, and adjust the total water consumption when flushing the water supply network according to the adjustment coefficient.

[0017] It can be understood that the system and method for dynamically adjusting the water volume during flushing of a water supply network in the above-mentioned embodiments of the present invention have the same beneficial effects and will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A flowchart of a method for dynamically adjusting the amount of water during flushing of a water supply network provided by an embodiment of the present invention; Figure 2 A structural block diagram of a system for dynamically adjusting water volume during flushing of a water supply network provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] like Figure 1 As shown, in some embodiments of the present application, this embodiment provides a method for dynamically adjusting the water volume during flushing of a water supply network, including: Step S100: based on the distribution length of the water supply network and the bearing pressure of each pipe section, determine the number of flushing times when flushing the water supply network and the amount of water corresponding to each flushing number.

[0021] Specifically, based on the distribution length of the water supply network and the bearing pressure of each pipe section, the flushing times of the water supply network are determined, including: obtaining the length and material strength information of each pipe section, and determining the bearing pressure of each pipe section according to the length and material strength information: .

[0022] Among them, P is the bearing pressure of the pipe section, z is the weight coefficient, L is the length of the pipe section, t is the wall thickness of the pipe section, σ is the material strength of the pipe section, D is the outer diameter of the pipe section, and Sf is the fatigue strength of the pipe section material. Get the minimum bearing pressure between each pipe section, get the maximum length between each pipe section, and determine the number of flushing times when flushing the water supply network based on the relationship between the minimum bearing pressure and the maximum length: .

[0023] Among them, N is the number of flushing times when the water supply network is flushed, Lmax is the maximum length between each pipe section, and Pmin is the minimum bearing pressure between each pipe section.

[0024] Specifically, based on the distribution length of the water supply network and the bearing pressure of each pipe section, determining the water volume corresponding to each flushing number when flushing the water supply network includes: obtaining the pressure loss and flow rate during one flushing in the water supply network, and the density of water used during flushing, and determining the water volume corresponding to each flushing number according to the pressure loss and flow rate during one flushing, the density of water used during flushing, the distribution length and the average inner diameter between each pipe section: .

[0025] Among them, Q is the water volume corresponding to the number of flushing times, d is the average inner diameter, △L is the distribution length, △P is the pressure loss during one flushing in the water supply network, ρ is the density of water used during flushing, u is the flow rate during one flushing in the water supply network, and R is the average bearing pressure between each pipe section.

[0026] It is understandable that the basic principle for determining the number of flushing times of the water supply network is to comprehensively evaluate the bearing pressure and distribution length of the pipe section. The bearing pressure P of each pipe section is calculated based on factors such as the length L, wall thickness t, material strength σ, and outer diameter D of the pipe section. In order to evaluate the pressure limit of the pipe section when flushing, the fatigue strength Sf of the material and the material characteristics of the pipe section must also be considered. Therefore, by obtaining the material strength and length information of each pipe section, the bearing pressure is calculated using a suitable formula to provide a basis for determining the number of flushing times of the pipe network. Secondly, the determination of the number of flushing times depends on the relationship between the minimum bearing pressure of the pipe section (Pmin) and the maximum length (Lmax) between the pipe sections. By combining the minimum bearing pressure and the maximum length of the pipe section, the flushing requirements of the entire pipe network can be determined more accurately. Specifically, the length of a larger pipe section may require more flushing times, while a pipe section with a smaller bearing pressure requires more frequent flushing to prevent the pipeline from being subjected to excessive pressure and causing damage. In this way, the number of flushing times can be dynamically adjusted, so that the pipe network can be optimized for flushing according to actual conditions under different pipe sections and different operating conditions. At the same time, the technical principle for determining the amount of water corresponding to each flushing number is based on the pressure loss, flow rate and water density during a flushing in the pipe network. Specifically, by obtaining the pressure loss (ΔP) and flow rate (u) during a flushing, as well as the density of the flushing water (ρ), the amount of water required for each flushing can be calculated in combination with the distribution length (ΔL) of the pipe network and the average inner diameter (d) of each pipe section. This calculation method comprehensively considers the fluid dynamics characteristics of the pipe network, and can ensure that the amount of water used for each flushing is appropriate, which will not waste water resources and ensure that the pipeline is fully cleaned. Flow rate and pressure loss are key factors affecting the flushing effect and water demand. Flow rate (u) directly affects the contact efficiency between the water flow and the pipe wall. A higher flow rate can accelerate the flushing of sediments in the pipe. Pressure loss (ΔP) reflects the resistance of water flow when passing through the pipe. Based on these parameters, the amount of water Q required for flushing can be accurately calculated to ensure that each flushing can effectively remove impurities and sediments in the pipe and avoid the problem of incomplete cleaning due to insufficient flushing intensity. Finally, considering all the parameters, the adjustment coefficient plays a key role in the dynamic adjustment of the flushing water volume. By determining the adjustment coefficient based on factors such as pressure loss, flow rate, pipe section length, and mean pressure (R) during flushing, the flushing water volume of each pipe section can be optimized. For example, for a longer or lower-pressure pipe section, more water may be required to improve the flushing effect, while for a short and higher-pressure pipe section, the flushing water volume can be reduced to avoid wasting water resources.

[0027] It can be seen that by determining the number of flushing times and the amount of water corresponding to each flushing based on the distribution length of the water supply network and the bearing pressure of the pipe section, the flushing frequency and water consumption of the pipe network can be accurately controlled. Traditional methods often determine the number of flushing times and water volume based on fixed time intervals or empirical data, without considering the specific physical characteristics and pressure bearing capacity of the pipe section. By combining parameters such as pipe section length, bearing pressure, and material strength, this method can dynamically adjust the flushing frequency and water volume, so that each pipe section can be effectively and appropriately flushed under different operating conditions, thereby maximizing the cleaning effect and reducing unnecessary waste of resources. Secondly, by comprehensively considering multiple factors such as the material strength, wall thickness, outer diameter, and fatigue strength of the pipe section, the bearing pressure of each pipe section can be more accurately evaluated. This evaluation helps to avoid excessive flushing pressure on the pipeline, thereby preventing the pipeline from rupturing or aging. In addition, differences in pipe section materials and structures will result in different water flow bearing capacities of the pipe section. Therefore, by dynamically adjusting the flushing pressure and water volume based on the characteristics of the pipe section, the risk of corrosion can be effectively reduced and the service life of the pipeline can be extended. Third, this method further optimizes the distribution of flushing times by calculating the relationship between the minimum bearing pressure and the maximum length between pipe sections. The differences in length and bearing pressure of different pipe sections will affect the efficiency and necessity of flushing. Therefore, the relationship between the minimum bearing pressure and the maximum length is used to determine the flushing times, so that each pipe section can get an appropriate number of flushing times, effectively avoiding the problem of over-flushing or under-flushing, and thus achieving the rational use of resources. Fourth, based on parameters such as pressure loss, flow rate, water density, and average inner diameter of the pipe section during a flush, the amount of water (Q) required for each flush can be accurately calculated. By comprehensively considering the physical properties of the water flow, the amount of water can be accurately adjusted according to the actual situation of different pipe sections to ensure that the flushing process is efficient and balanced, avoiding the risk of waste of resources or incomplete cleaning caused by excessive or insufficient water in traditional methods. Finally, the introduction of the adjustment coefficient provides flexibility for the dynamic adjustment of the flushing water volume. By combining the average bearing pressure, pressure loss, flow rate and other data of each pipe section, the adjustment coefficient can fine-tune the flushing water volume according to the actual situation, so that each flush can ensure the cleaning effect while minimizing damage to the pipeline and waste of resources. The application of this method can significantly improve the management efficiency of the water supply network and reduce the overall operation and maintenance costs.

[0028] Preferably, after determining the number of flushing times and the amount of water, the flushing strategy can be further optimized according to the characteristics of the friction ball. The friction ball has a certain elasticity and friction force, and can clean the pipe wall by friction under the drive of the water flow. For pipe sections with large bearing pressure and long length, an appropriate amount of friction balls can be added during each flushing to improve the flushing effect. When the number of flushing times is large, the density of friction balls can be appropriately increased so that they can continue to play a cleaning role during multiple flushing processes. For example, when the number of flushing times reaches more than 3 times, friction balls can be added per meter of pipe section, and the adjustment is made according to the actual situation of the pipe section.

[0029] Step S200, obtaining the duration of each pipe section not being flushed, and determining the preset water volume for flushing each pipe section according to the duration of each pipe section not being flushed.

[0030] Specifically, according to the interval length of each pipe section that has not been flushed, the preset water volume for flushing each pipe section is determined, including: obtaining the average impurity content and average transportation flow rate in the water transported in each pipe section. Obtain the length and inner diameter of each pipe section, and determine the preset water volume of each pipe section according to the length and inner diameter of the pipe section, the average impurity content and the average transportation flow rate: J=L·c·x·v·b. Among them, J is the preset water volume of the pipe section, c is the inner diameter of the pipe section, x is the average impurity content, v is the average transportation flow rate, and b is the interval length of the pipe section that has not been flushed.

[0031] It is understandable that by determining the preset water volume of each pipe section based on the duration of the unflushed interval of the pipe section, the method can accurately adjust the amount of water required for each pipe section during the flushing process. The duration of the unflushed interval reflects the time that water flows in the pipeline. Generally, pipe sections with longer time may accumulate more sediment or impurities, so a larger amount of flushing water is required. By dynamically adjusting the preset water volume of each pipe section, the effectiveness of each flushing can be guaranteed, the problem of flushing too little or too much can be avoided, and the use of water resources can be optimized. Secondly, the preset water volume of each pipe section is dynamically determined by calculating the average impurity content and the average transportation flow rate in the pipe section. The impurity content in water is closely related to the flow rate of water flow. The accumulation of impurities and the water flow rate directly affect the cleaning effect of the pipe section. By obtaining these parameters, the amount of flushing water required for each pipe section can be reasonably estimated to ensure that the sediment and impurities in the pipeline can be fully removed during the flushing process to achieve the best cleaning effect. Third, combined with the length and inner diameter of the pipe section, the fluid dynamic characteristics of each pipe section can be more accurately evaluated. The length of the pipe section affects the resistance of the water flow, and the inner diameter determines the smoothness of the water flow. By combining the geometric characteristics of the pipe section with the impurity content and flow rate to calculate the preset water volume, the flushing scheme can be tailored to the actual conditions of different pipe sections, avoiding the problem of uneven flushing caused by large differences in pipe sections. Fourth, the flushing water volume of each pipe section can be scientifically calculated by comprehensively considering factors such as pipe section length, inner diameter, impurity content, and flow rate. This comprehensive calculation method improves the accuracy of the flushing process and avoids the shortcomings of relying on empirical data or a single factor, thereby ensuring the maximum effect of each flushing. Finally, the preset water volume is adjusted based on the characteristics of each pipe section, which not only improves the flushing effect, but also reduces the potential damage to the pipeline. Too much water will lead to unnecessary waste of resources and may cause excessive pressure on the pipeline and cause damage; while too little water may lead to incomplete cleaning and inability to effectively remove sediments. By accurately adjusting the preset water volume of each pipe section, this method realizes the rational use of water resources, reduces waste, and ensures the stability and cleanliness of the pipeline in long-term operation.

[0032] Preferably, the selection and use of friction balls are adjusted according to the preset water volume. For pipe sections with a large preset water volume, it means that there may be more impurities in the pipe section, and friction balls with greater friction force can be selected. At the same time, the amount of friction balls added is increased according to a certain ratio. For example, when the preset water volume exceeds a certain threshold (such as 10 cubic meters), one friction ball can be added per cubic meter of water. In this way, during the flushing process of a large amount of water flow, the friction balls can better cooperate with the water flow to clean the pipe wall. Step S300: obtaining the chemical material of the water used for flushing, and substituting the chemical material into a pre-established pipe cleaning model to obtain the corrosion rate of the water used for flushing.

[0033] Specifically, the pre-established pipe cleaning model includes: obtaining the material of each pipe segment, the chemical material of each flushing water, and the corrosion rate of the pipe segment material at different concentrations, and establishing a corrosion correlation. Based on the corrosion rate, the distance metric between each corrosion correlation is obtained, and the distance matrix of each chemical material is established based on the distance metric. The distance matrix is ​​iteratively clustered, and the corrosion feature vector of each chemical material after iterative clustering is obtained. The pipe cleaning model is established based on the corrosion feature vector of each chemical material.

[0034] It is understandable that by obtaining the chemical material of the flushing water and substituting it into the pipe cleaning model to obtain the corrosion rate, the cleaning process can be dynamically adjusted according to the characteristics of different water qualities. Different chemical materials may have different effects on the corrosion rate of the pipe section. Therefore, by analyzing and quantifying these effects, the corrosion rate can be accurately calculated to optimize the flushing scheme to avoid accelerated pipeline damage due to excessive corrosion rate or poor cleaning effect due to too slow corrosion rate. Secondly, by establishing a corrosion correlation and calculating the relationship between the corrosion rate and different chemical materials and their concentrations, the degree of corrosion of the pipe section by different chemical materials at different concentrations can be accurately evaluated. This process helps to scientifically select appropriate chemical materials and concentrations, which can not only ensure the cleaning effect, but also reduce the corrosion effect of chemicals on the pipeline, thereby balancing the relationship between the cleaning effect and pipeline safety. Third, the introduction of distance metrics and distance matrices provides a method to quantify the differences in corrosion characteristics between chemical materials. By calculating the distance metric between chemical materials, the different effects of different chemical materials on the corrosion rate can be revealed, helping cleaning operators to select the most appropriate combination of chemical materials. In addition, the distance matrix established based on the distance metric can effectively classify and group chemical materials, providing a basis for subsequent optimization decisions. Fourth, the use of iterative clustering enables the corrosion feature vector to be continuously optimized to achieve more accurate corrosion prediction. Through cluster analysis, the corrosion patterns that may occur in the cleaning process of different chemical materials can be identified, and the accuracy of the pipe cleaning model can be further improved. The iterative process helps to adjust the model according to the new corrosion data, so that each cleaning operation can be carried out under the most suitable corrosion conditions, thereby ensuring the long-term safe operation of the pipeline. Finally, establishing a pipe cleaning model and optimizing the cleaning process based on the corrosion feature vector of the chemical material can greatly improve the flushing efficiency and safety. By establishing a scientific model, it is possible to predict and avoid damage to the pipe section by different cleaning agents, and ensure that the corrosion rate of the water used for flushing is always within the safe range that the pipeline can withstand. This can not only extend the service life of the pipeline and reduce maintenance costs, but also improve the overall management level and resource utilization efficiency of the water supply network.

[0035] Specifically, considering that the corrosion rate of flushing water will affect the use effect and life of the friction ball, the material selection of the friction ball should be adjusted according to the corrosion rate. When the corrosion rate is high, choose a friction ball material with good corrosion resistance, such as a friction ball made of polyethylene plastic; when the corrosion rate is low, use a friction ball made of ordinary rubber. At the same time, in the case of high corrosion rate, appropriately reduce the amount of friction balls to prevent the friction balls from being corroded and damaged too quickly, affecting the cleaning effect or causing pipeline blockage.

[0036] Step S400, determine the total water consumption when flushing the water supply network according to the number of flushing times and the water volume corresponding to each flushing number, determine the adjustment coefficient according to the preset water volume when flushing each pipe section and the corrosion rate of the water used during flushing, and adjust the total water consumption when flushing the water supply network according to the adjustment coefficient.

[0037] Specifically, when determining the adjustment coefficient according to the preset water volume during flushing of each pipe section and the corrosion rate of the water used during flushing, it includes: determining the preset total water volume of the water supply network according to the preset water volume during flushing of each pipe section, and determining the adjustment coefficient according to the relationship between the preset total water volume and the total water consumption: when the preset total water volume is consistent with the total water consumption, the adjustment coefficient is determined to be A0. When the preset total water volume is inconsistent with the total water consumption, the absolute value of the water consumption difference between the preset total water volume and the total water consumption is obtained, and the adjustment coefficient is determined according to the absolute value of the water consumption difference.

[0038] Specifically, when determining the adjustment coefficient according to the absolute value of the water consumption difference, it includes: determining the adjustment coefficient according to the relationship between the absolute value of the water consumption difference and the pre-configured first preset water consumption difference and the second preset water consumption difference: when the absolute value of the water consumption difference is lower than the first preset water consumption difference, the adjustment coefficient is determined to be A0. When the absolute value of the water consumption difference is greater than or equal to the first preset water consumption difference, and the absolute value of the water consumption difference is less than the second preset water consumption difference, the adjustment coefficient is determined to be A1. When the absolute value of the water consumption difference is greater than or equal to the second preset water consumption difference, the adjustment coefficient is determined to be A2. Among them, the first preset water consumption difference is less than the second preset water consumption difference, and A0<A1<A2<1.

[0039] Specifically, when the adjustment coefficient is determined to be Ai, i=0, 1, 2, it includes: determining whether the adjustment coefficient Ai is corrected according to the corrosion rate of the water used during flushing and the preset corrosion rate: when the corrosion rate is lower than the preset corrosion rate, it is determined not to correct the adjustment coefficient Ai. When the corrosion rate is higher than or equal to the preset corrosion rate, the correction coefficient is determined according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, and the adjustment coefficient Ai is corrected according to the correction coefficient.

[0040] Specifically, when determining the correction coefficient according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, it includes: determining the correction coefficient according to the relationship between the corrosion rate difference and the pre-configured first preset corrosion rate difference and the second preset corrosion rate difference: when the corrosion rate difference is lower than the first preset corrosion rate difference, the correction coefficient is determined to be S1. When the corrosion rate difference is higher than or equal to the first preset corrosion rate difference, and the corrosion rate difference is lower than the second preset corrosion rate difference, the correction coefficient is determined to be S2. When the corrosion rate difference is higher than or equal to the second preset corrosion rate difference, the correction coefficient is determined to be S3. Among them, the first preset corrosion rate difference is less than the second preset corrosion rate difference, and S1<S2<S3<1.

[0041] It can be understood that by dynamically adjusting the total water consumption based on the number of flushing times and the amount of water, this method can ensure that the water supply network uses a reasonable amount of water during the flushing process. By accurately calculating the preset water volume of each pipe section and the water volume corresponding to each flushing number, combined with the actual water volume demand during flushing, the total water consumption can be dynamically adjusted to avoid the problem of too much or too little water. This not only optimizes the use efficiency of water resources and reduces waste, but also ensures the maximum flushing effect and ensures that each pipe section is fully cleaned. Secondly, by introducing the adjustment coefficient, flexible adjustment can be achieved between the preset water volume and the actual water consumption. The setting of the adjustment coefficient is based on the difference in water consumption. If there is a difference between the preset total water volume and the actual water consumption, it can be dynamically adjusted according to the set water consumption difference. The specific adjustment coefficient (A0, A1, A2) is adjusted according to the size of the water volume difference, so that the water volume of each flushing is closer to the actual demand, avoiding the waste of resources or insufficient cleaning due to inaccurate estimation. Third, in the process of determining the adjustment coefficient, the impact of corrosion rate on the pipeline is considered. By comparing with the preset corrosion rate, it is possible to determine whether the current water quality and chemical materials pose too high a corrosion risk to the pipeline. If the corrosion rate is too fast during the flushing process, the water volume can be reduced by adjusting the adjustment coefficient, thereby avoiding damage to the pipeline due to excessive corrosion. Through this mechanism, the long-term stability and safety of the pipeline are effectively guaranteed. Fourth, the accuracy of the adjustment coefficient is further improved by calculating the corrosion rate difference and introducing the correction coefficient. When the corrosion rate is too fast, the correction coefficient can help adjust the adjustment coefficient and reduce the flushing water volume, thereby reducing the corrosion effect of chemical materials on the pipeline. According to the different differences in corrosion rates, the correction coefficient can be automatically adjusted so that each flushing is within an optimal corrosion control range. This dynamic adjustment mechanism effectively avoids unsatisfactory cleaning effects caused by too fast or too slow corrosion rates and extends the service life of the pipeline. Finally, through the adjustment mechanism of this paragraph, the flushing process of the water supply network can be ensured to be efficient, safe, and resource-saving. According to different water consumption and corrosion rate differences, precise adjustments will be made in multiple dimensions to avoid waste of resources due to excessive flushing or incomplete cleaning due to insufficient flushing. Especially after considering the impact of corrosion rate on pipelines, this method can reduce damage to pipelines while ensuring flushing effect, improve the long-term performance of pipelines, and reduce subsequent maintenance costs.

[0042] In the above embodiments, during the flushing process of the water supply network, the traditional method usually relies on fixed time intervals or preset water volume for flushing, which is difficult to accurately adjust according to the specific operating conditions of different pipe sections, resulting in waste of water resources or insufficient flushing effect. The present invention realizes more efficient and accurate pipe network maintenance by accurately and dynamically adjusting the flushing water volume. By comprehensively considering multi-dimensional factors such as the physical properties of the pipe section, the bearing pressure, the unflushed interval, the water quality parameters and the corrosive components, the amount of water required for flushing is dynamically calculated. In practical applications, the PIG device can run along the pipeline and monitor the pressure, sediment, pipe wall condition and water quality changes in the pipe section in real time, thereby providing a more accurate basis for decision-making. Specifically, the method combines the data feedback of the PIG device, dynamically adjusts the flushing frequency and water volume according to the distribution length and bearing pressure of the pipe section, and ensures that each pipe section achieves the best flushing effect with the least water consumption. In addition, compared with the traditional simple water flow flushing method, the PIG technology effectively reduces the accumulation of pollutants in the pipeline by physically removing the attachments on the pipe wall, and improves the flushing efficiency. Combined with real-time water quality monitoring data, this method can also dynamically optimize the flushing water volume according to the non-flushing interval and water quality changes to ensure that the differentiated cleaning needs of different pipe sections are met. At the same time, when dealing with pipeline corrosion problems, this method uses the data collected by the PIG device to analyze the chemical composition of the flushing water and optimizes it in combination with the corrosion rate calculation model. By introducing the corrosion adjustment coefficient, the impact of water quality on the pipeline during the flushing process can be effectively controlled, and the adverse effects of corrosive components on the pipeline life can be reduced, thereby extending the service life of the pipeline.

[0043] In another preferred embodiment based on the above embodiment, Figure 2 As shown, this embodiment provides a system for dynamically adjusting the amount of water during flushing of a water supply network, including: an acquisition module, an evaluation module and a central control module.

[0044] Specifically, the acquisition module is configured to obtain the time interval between each pipe section that has not been flushed, the acquisition module is also configured to the distribution length of the water supply network and the bearing pressure of each pipe section, and the acquisition module is also configured to obtain the chemical material of the water used for flushing. The evaluation module is electrically connected to the acquisition module, and the evaluation module is configured to determine the number of flushing times when flushing the water supply network and the water volume corresponding to each flushing number based on the distribution length of the water supply network and the bearing pressure of each pipe section. The evaluation module is also configured to determine the preset water volume when flushing each pipe section according to the time interval between each pipe section that has not been flushed. The evaluation module is also configured to substitute the chemical material into the pre-established pipe section cleaning model to obtain the corrosion rate of the water used for flushing. The central control module is electrically connected to the evaluation module, and the central control module is configured to determine the total water consumption when flushing the water supply network according to the number of flushing times when flushing the water supply network and the water volume corresponding to each flushing times, determine the adjustment coefficient according to the preset water volume when flushing each pipe section and the corrosion rate of the water used for flushing, and adjust the total water consumption when flushing the water supply network according to the adjustment coefficient.

[0045] It can be understood that the system and method for dynamically adjusting the water volume during flushing of a water supply network in the above-mentioned embodiments of the present invention have the same beneficial effects and will not be described in detail.

[0046] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0047] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0048] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0049] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for dynamically adjusting the amount of water during flushing of a water supply network, characterized in that: include: Determine the number of flushing times when flushing the water supply network and the amount of water corresponding to each flushing number based on the distribution length of the water supply network and the bearing pressure of each pipe section; Obtaining the duration of each pipe section not being flushed, and determining the preset water volume for flushing each pipe section according to the duration of each pipe section not being flushed; Obtaining the chemical material of the water used for flushing, and substituting the chemical material into a pre-established pipe cleaning model to obtain the corrosion rate of the water used for flushing; The total water consumption during flushing of the water supply network is determined based on the number of flushing times and the water volume corresponding to each flushing number. The adjustment coefficient is determined based on the preset water volume during flushing of each pipe section and the corrosion rate of the water used during flushing. The total water consumption during flushing of the water supply network is adjusted based on the adjustment coefficient.

2. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 1, characterized in that: Based on the distribution length of the water supply network and the bearing pressure of each pipe section, the number of flushing times when flushing the water supply network is determined includes: Obtain the length and material strength information of each pipe segment, and determine the bearing pressure of each pipe segment according to the length and material strength information: ； Wherein, P is the bearing pressure of the pipe segment, z is the weight coefficient, L is the length of the pipe segment, t is the wall thickness of the pipe segment, σ is the material strength of the pipe segment, D is the outer diameter of the pipe segment, and Sf is the fatigue strength of the material of the pipe segment; The minimum bearing pressure between the pipe sections is obtained, the maximum length between the pipe sections is obtained, and the number of flushing times when flushing the water supply network is determined according to the relationship between the minimum bearing pressure and the maximum length: ； Among them, N is the number of flushing times when flushing the water supply network, Lmax is the maximum length between each of the pipe sections, and Pmin is the minimum bearing pressure between each of the pipe sections.

3. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 2, characterized in that: Determining the water volume corresponding to each flushing number when flushing the water supply network based on the distribution length of the water supply network and the bearing pressure of each pipe section includes: The pressure loss and flow rate during one flushing in the water supply network, and the density of water used during flushing, are obtained, and the water volume corresponding to each flushing number is determined according to the pressure loss and flow rate during one flushing, the density of water used during flushing, the distribution length, and the average inner diameter between each pipe section: ； Among them, Q is the water volume corresponding to the number of flushing times, d is the average inner diameter, △L is the distribution length, △P is the pressure loss during one flushing in the water supply network, ρ is the density of water used for flushing, u is the flow rate during one flushing in the water supply network, and R is the average bearing pressure between the pipe sections.

4. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 3, characterized in that: Determining the preset water volume for flushing each pipe section according to the duration of the non-flushing interval of each pipe section includes: Obtaining the average impurity content and the average flow rate of the water transported in each of the pipe sections; The length and inner diameter of each pipe section are obtained, and the preset water volume of each pipe section is determined according to the length and inner diameter of the pipe section, the average impurity content and the average transportation flow rate: J = L·c·x·v·b; Among them, J is the preset water volume of the pipe section, c is the inner diameter of the pipe section, x is the average impurity content, v is the average transportation flow rate, and b is the duration of the unflushed interval of the pipe section.

5. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 4, characterized in that: Pre-built pipe cleaning models include: Obtain the material of each pipe section, the chemical material of each flushing water, and the corrosion rate of the pipe section material at different concentrations, and establish a corrosion correlation equation; Obtaining a distance metric between each of the corrosion correlation equations based on the corrosion rate, and establishing a distance matrix for each of the chemical materials according to the distance metric; Iteratively clustering the distance matrix, and obtaining the corrosion feature vector of each chemical material after iterative clustering; The pipe section cleaning model is established based on the corrosion feature vectors of each of the chemical materials.

6. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 5, characterized in that: According to the preset water volume during flushing of each pipe section and the corrosion rate of the water used during flushing, the adjustment coefficient is determined, including: Determine the preset total water volume of the water supply network according to the preset water volume when flushing each pipe section, and determine the adjustment coefficient according to the relationship between the preset total water volume and the total water consumption; When the preset total water volume is consistent with the total water volume, the adjustment coefficient is determined to be A0; When the preset total water volume is inconsistent with the total water volume, the absolute value of the water volume difference between the preset total water volume and the total water volume is obtained, and the adjustment coefficient is determined according to the absolute value of the water volume difference.

7. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 6, characterized in that: When determining the adjustment coefficient according to the absolute value of the water volume difference, it includes: The adjustment coefficient is determined according to the relationship between the absolute value of the water consumption difference and the pre-configured first preset water consumption difference and the second preset water consumption difference: When the absolute value of the water consumption difference is lower than the first preset water consumption difference, the adjustment coefficient is determined to be A0; When the absolute value of the water consumption difference is greater than or equal to the first preset water consumption difference, and the absolute value of the water consumption difference is less than the second preset water consumption difference, the adjustment coefficient is determined to be A1; When the absolute value of the water consumption difference is greater than or equal to the second preset water consumption difference, the adjustment coefficient is determined to be A2; Among them, the first preset water consumption difference is smaller than the second preset water consumption difference, and A0<A1<A2<1.

8. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 7, characterized in that: When the adjustment coefficient is determined to be Ai, i=0, 1, 2, it includes: Determining whether the adjustment coefficient Ai is to be corrected according to the corrosion rate of the water used during flushing and a preset corrosion rate; When the corrosion rate is lower than the preset corrosion rate, it is determined that the adjustment coefficient Ai is not corrected; When the corrosion rate is higher than or equal to the preset corrosion rate, a correction coefficient is determined according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, and the adjustment coefficient Ai is corrected according to the correction coefficient.

9. The method for dynamically adjusting water volume during flushing of a water supply network according to claim 8, characterized in that: When determining the correction coefficient according to the corrosion rate difference between the corrosion rate and the preset corrosion rate, it includes: The correction coefficient is determined according to the relationship between the corrosion rate difference and the pre-configured first preset corrosion rate difference and the second preset corrosion rate difference: When the corrosion rate difference is lower than the first preset corrosion rate difference, the correction coefficient is determined to be S1; When the corrosion rate difference is higher than or equal to the first preset corrosion rate difference, and the corrosion rate difference is lower than the second preset corrosion rate difference, the correction coefficient is determined to be S2; When the corrosion rate difference is higher than or equal to the second preset corrosion rate difference, the correction coefficient is determined to be S3; The first preset corrosion rate difference is smaller than the second preset corrosion rate difference, and S1<S2<S3<1.

10. A system for dynamically adjusting the amount of water during flushing of a water supply network, applicable to a method for dynamically adjusting the amount of water during flushing of a water supply network as claimed in any one of claims 1 to 9, characterized in that: include: An acquisition module is configured to acquire the duration of each pipe section not being flushed, the acquisition module is further configured to acquire the distribution length of the water supply network and the bearing pressure of each pipe section, and the acquisition module is further configured to acquire the chemical material of the water used for flushing; An evaluation module is electrically connected to the acquisition module, and the evaluation module is configured to determine the number of flushing times when flushing the water supply network and the water volume corresponding to each flushing number based on the distribution length of the water supply network and the bearing pressure of each pipe segment; the evaluation module is also configured to determine the preset water volume when flushing each pipe segment according to the interval length of each pipe segment that has not been flushed; the evaluation module is also configured to substitute the chemical material into a pre-established pipe segment cleaning model to obtain the corrosion rate of the water used during the flushing; The central control module is electrically connected to the evaluation module, and is configured to determine the total water consumption when flushing the water supply network according to the number of flushing times and the water volume corresponding to each flushing number, determine the adjustment coefficient according to the preset water volume when flushing each pipe section and the corrosion rate of the water used during flushing, and adjust the total water consumption when flushing the water supply network according to the adjustment coefficient.

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