An industrial park dynamic constant pressure water supply method, system, device and storage medium

Abstract

The application discloses an industrial park dynamic constant-pressure water supply method, system, equipment and storage medium, relates to the technical field of industrial park water supply, and through the minimum water pressure value and the effective water supply coefficient of a water-using enterprise, the water pressure required by an i-th water-using enterprise is calculated, the water pressure required by all water-using enterprises is sequentially decreased to obtain a one-dimensional array, the water supply pressure of a water supply room is set, the water supply pressure of the water supply room is the maximum value in the one-dimensional array, then according to the pipe network water pressure and the pipe network flow monitoring of the water-using enterprise, whether Qi is equal to 0 is judged, if Qi is not equal to 0, Y1 is the set value of the water supply pump room constant-pressure water supply, if Qi is equal to 0, the second largest value Y2 in the one-dimensional array Y is judged, if Y2 is not equal to 0, Y2 is the set value of the water supply pump room constant-pressure water supply, and through dynamic adjustment, the set value of the current water supply pump room constant-pressure water supply is the best value.

Description

Technical Field

[0001] This invention belongs to the field of industrial park water supply technology, specifically relating to a dynamic constant pressure water supply method, system, equipment and storage medium for industrial parks. Background Technology

[0002] The electricity consumed by water supply pumps is the main source of power consumption for water plants, accounting for approximately 80% of their total power consumption. Therefore, reducing the energy consumption of water supply pumps is a crucial guarantee for the green development of water plants. Under the premise of ensuring a safe water supply to industrial parks, how to meet the water supply needs of all enterprises in the park with minimal pump energy consumption is a critical issue that water plants need to address. Variable frequency speed control constant pressure water supply systems are currently a common method used by water supply companies. Their function is to use a PID controller to keep the actual pressure of the main water supply network stable at the set pressure. The basic control process of constant pressure water supply is described as follows: The water pressure of the outlet pipe network is constantly monitored. When disturbances cause the user's water supply pressure to be lower than the set pressure value, a positive force difference is obtained. The PID controller outputs an increment, increasing the frequency of the frequency converter, which in turn increases the speed of the water pump unit, thereby increasing the water supply force at the user end. Conversely, when the user's water supply pressure is lower than the set pressure value, the PID controller outputs a decrement, decreasing the frequency of the frequency converter, which in turn decreases the speed of the water pump unit, thereby reducing the water supply force at the user end. During the overload of constant pressure water supply, the variable frequency speed control system continuously compares the differences until the actual water supply pressure matches the set pressure, at which point the adjustment process stops, and the system reaches a stable state.

[0003] During water plant operation, the set output pressure value is a fixed value that remains unchanged regardless of the time period or whether the customer uses water. The energy consumption of the water pump is directly proportional to the water pressure in the pipeline network; the higher the water pressure, the more electricity the pump unit consumes. Although constant pressure water supply improves pipeline network safety and reduces water pump energy consumption to some extent, it still provides pipeline network pressure when the customer is not using water or the required water supply pressure is low, resulting in wasted water pump energy and making it not the most economical water supply method. Therefore, a dynamic constant pressure water supply method is proposed, which can automatically and dynamically adjust the constant pressure water supply pressure of the water plant according to the changes in the water demand of water users, thereby saving water pump energy. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a dynamic constant pressure water supply method for industrial parks, which solves the technical problem in existing technologies where the output water pressure is a constant value, resulting in water pump waste when customers are not using the water.

[0005] The objective of this invention can be achieved through the following technical solution: a dynamic constant pressure water supply method for industrial parks, the method comprising the following steps:

[0006] Obtain the number of water-using enterprises, count the number of water-using enterprises and label it as n, and set the minimum water pressure value P for each water-using enterprise. 0i , where i is the statistical water-using enterprise number, i is a positive integer, and i = 1, 2, 3, ..., n;

[0007] The effective water supply coefficient is set as J. i Through formula Y i =P 0i / 0.9J i The required water pressure Y for the pumping station of the i-th water user enterprise is calculated. i ;

[0008] For all calculated Y i Perform descending sorting to obtain a one-dimensional array Y = (Y1, Y2, ..., Y... n );

[0009] Set the water supply pressure of the water supply room to Y. o And Y o To find the maximum value of a one-dimensional array Y, for this purpose, Y o =Y1=Ymax;

[0010] Let P be the water pressure group of the pipe network for n water-using enterprises, and Q be the flow rate group of the pipe network, and:

[0011] P = (P1, P2, ..., P) n Q = (Q1, Q2, ..., Q) n );

[0012] When a water-using enterprise uses water, its pipeline flow rate is set to Qi. It is then determined whether Qi is equal to 0. If it is not equal to 0, then Y1 is the set value for constant pressure water supply in the water pumping station. If Qi is equal to 0, then the second largest value Y2 in the one-dimensional array Y is determined. If it is not equal to 0, then Y2 is the set value for constant pressure water supply in the water pumping station. This process is repeated, and through dynamic adjustment, the current set value for constant pressure water supply in the water pumping station is made optimal.

[0013] Furthermore, the concept of the effective water supply coefficient takes into account pipeline losses during transportation, and since the distance from each water user to the water pumping station is different, the consumption during use is also different for each water user.

[0014] Furthermore, the 0.9J i This is because a 10% margin in water pressure needs to be considered during actual water supply.

[0015] Furthermore, when Qi = 0, it indicates that the water-using enterprise is in a state of no water use, and the water demand of the water-using enterprise is not considered when supplying water; when Qi ≠ 0, it indicates that the water-using enterprise is in a state of water use.

[0016] Furthermore, the actual water pressure of the i-th enterprise is set to Pi, and Pi > P0i. If Pi < P0i, it means that the water supply is lower than the needs of the water-using enterprise, indicating that there is a leak in the water transport network. At this time, Yi needs to be manually set so that Pi > P0i, and an alarm signal is sent to notify maintenance personnel to check the network.

[0017] Furthermore, the alarm signal is used to alert maintenance personnel, thereby improving the safety of the water supply.

[0018] Furthermore, the Y o The needs of all water users should be met.

[0019] Furthermore, an industrial park dynamic constant pressure water supply system includes a data acquisition module, a data processing module, a data analysis module, an execution module, and an alarm module. The data acquisition module collects the number of water-using enterprises and sends the collected number of water-using enterprises to the data processing module. The data processing module marks and counts the number of water-using enterprises, calculates the required water pressure of the pumping station for the i-th water-using enterprise, and sends it to the data analysis module for analysis. The data analysis module sorts the required water pressure of the pumping station for the i-th water-using enterprises and, through analysis, determines the optimal value for constant pressure water supply at the current pumping station. Then, it sends the optimal value for constant pressure water supply at the pumping station to the execution module. The execution module supplies water based on the received optimal value for constant pressure water supply at the pumping station. The alarm module sends an alarm signal to notify maintenance personnel to inspect the pipeline network when the water supply is lower than the needs of the water-using enterprises.

[0020] Furthermore, an apparatus includes:

[0021] One or more processors;

[0022] Memory, used to store one or more programs;

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement a dynamic constant pressure water supply method for industrial parks as described above.

[0024] A storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a dynamic constant-pressure water supply method for an industrial park as described above.

[0025] The beneficial effects of this invention are:

[0026] This invention sets minimum water pressure and effective water supply coefficients for water-using enterprises, calculates the required water pressure of the pumping station for the i-th water-using enterprise, and sorts the required water pressures of the pumping stations for the i-th water-using enterprises in descending order to obtain a one-dimensional array. Then, it sets the water supply pressure of the water supply station to the maximum value in the one-dimensional array. Next, it monitors the water pressure and flow rate in the water-using network, determining whether Qi equals 0. If not, Y1 is the set value for constant pressure water supply in the pumping station. If Qi equals 0, it checks the second largest value Y2 in the one-dimensional array Y. If not, Y2 is the set value for constant pressure water supply in the pumping station. Through dynamic adjustment, the current set value for constant pressure water supply in the pumping station is optimized, satisfying the water needs of all enterprises while minimizing the power consumption of the water pumps, achieving the goal of green energy saving. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, a dynamic constant pressure water supply method for industrial parks includes the following steps:

[0031] Obtain the number of water-using enterprises, count the number of water-using enterprises and label it as n, and set the minimum water pressure value P for each water-using enterprise. 0i , where i is the statistical water-using enterprise number, i is a positive integer, and i = 1, 2, 3, ..., n;

[0032] The effective water supply coefficient is set as J. i It should be further explained that, in the specific implementation process, the concept of effective water supply coefficient takes into account the pipeline loss during transportation, and since the distance from each water user to the water pumping station is different, the consumption during use is also different for each water user.

[0033] Through formula Y i =P 0i / 0.9J i The required water pressure for the pumping station of the i-th water-using enterprise is calculated. It should be further explained that, in the specific implementation process, 0.9J... i In actual water usage, a 10% margin in water supply pressure needs to be considered.

[0034] For all calculated Y i Perform descending sorting to obtain a one-dimensional array Y = (Y1, Y2, ..., Y... n );

[0035] Set the water supply pressure of the water supply room to Y. o It should be further explained that, in the specific implementation process, the water supply pressure of the water supply room should meet the needs of all water-using enterprises, therefore Y o To find the maximum value of a one-dimensional array Y, for this purpose, Y o =Y1=Ymax;

[0036] Then, establish a network for monitoring water pressure and flow at the terminals of water-using enterprises to obtain real-time values ​​of water pressure and flow at the terminals of current water-using enterprises;

[0037] Let P be the water pressure group of the pipe network for n water-using enterprises, and Q be the flow rate group of the pipe network, and:

[0038] P = (P1, P2, ..., P) n Q = (Q1, Q2, ..., Q) n );

[0039] It needs to be further explained that, in the specific implementation process, the pipeline flow rate of the water-using enterprise is set as Qi. When Qi = 0, it indicates that the water-using enterprise is in a state of no water use, and the water demand of the water-using enterprise is not considered when supplying water; when Qi ≠ 0, it indicates that the water-using enterprise is in a state of water use.

[0040] Therefore, to ensure the water needs of all current water-using enterprises, the following judgments need to be made:

[0041] Since the first enterprise requires the highest water pressure, we check if Qi is equal to 0. If it is not equal to 0, then Y1 is the set value for constant pressure water supply in the water pumping station. If Qi is equal to 0, we check the second largest value Y2 in the one-dimensional array Y. If it is not equal to 0, then Y2 is the set value for constant pressure water supply in the water pumping station. It should be further explained that in the specific implementation process, this process is repeated to dynamically adjust the set value to make the current set value for constant pressure water supply in the water pumping station the optimal value.

[0042] It should be further explained that, in the specific implementation process, the actual water pressure of the i-th enterprise is set as P. i Under normal circumstances, P i >P 0i If P appears i <P 0i If the water supply is below the demand of the water-using enterprises, it indicates a leak in the water transport network. In this case, it is necessary to manually adjust the constant pressure water supply setpoint Yi of the water pumping station to ensure that P... i >P 0i At the same time, an alarm signal is sent to notify maintenance personnel to inspect the pipeline network, thereby maintaining and resolving water safety issues.

[0043] A dynamic constant pressure water supply system for an industrial park includes a data acquisition module, a data processing module, a data analysis module, an execution module, and an alarm module. The data acquisition module collects the number of water-using enterprises and sends the collected data to the data processing module. The data processing module marks and counts the number of water-using enterprises, calculates the required water pressure of the pumping station for the i-th water-using enterprise, and sends the calculated water pressure to the data analysis module for analysis. The data analysis module sorts the required water pressure of the pumping station for the i-th water-using enterprises and, through analysis, determines the optimal value for constant pressure water supply from the pumping station. The optimal value for constant pressure water supply from the pumping station is then sent to the execution module. The execution module supplies water based on the received optimal value for constant pressure water supply from the pumping station. The alarm module sends an alarm signal to notify maintenance personnel to inspect the pipeline network when the water supply is lower than the needs of the water-using enterprises.

[0044] An apparatus comprising:

[0045] One or more processors;

[0046] Memory, used to store one or more programs;

[0047] When the one or more programs are executed by the one or more processors, the one or more processors implement a dynamic constant pressure water supply method for industrial parks as described above.

[0048] A storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a dynamic constant-pressure water supply method for an industrial park as described above.

[0049] Example: A water plant supplies water to 8 enterprises. The minimum water pressure required for the enterprises to operate normally, and the effective water supply coefficient of the pipeline network from the pumping station to the enterprises are as follows:

[0050]

[0051] The required water pressure for the pumping stations of each company is as follows:

[0052]

[0053] achievable

[0054] Y=(0.543, 0.532, 0.514, 0.414, 0.409, 0.382, 0.347, 0.302)

[0055] In the one-dimensional array, the first element represents the water supply requirements of company 8, the second represents the water supply requirements of company 4, the third represents the water supply requirements of company 5, the fourth represents the water supply requirements of company 3, the fifth represents the water supply requirements of company 2, the sixth represents the water supply requirements of company 6, the seventh represents the water supply requirements of company 1, and the eighth represents the water supply requirements of company 7.

[0056] By establishing a water supply network monitoring system, the water pressure and water volume of each enterprise at the end of the water supply network can be obtained.

[0057] Assuming the current constant pressure water supply setpoint is 0.55 MPa, the latest pipeline monitoring data obtained through the monitoring network is as follows:

[0058] P = (P1, P2, ..., P) n = (0.47, 0.49, 0.48, 0.49, 0.50, 0.48, 0.51, 0.48)

[0059] Q = (Q1, Q2, ..., Q) n = (0, 0, 0.41, 0.08, 0.15, 0, 0.22, 0.39)

[0060] In the table below, i = 1 to 8 represent companies 8 to 7, respectively.

[0061] The data obtained indicates that when companies 8, 4, and 6 are not using water, the water supply pressure from the pumping station meets the requirements of company 5, thus satisfying the pressure needs of all other companies using water. Taking Y0 = Y3 = 0.514 MPa, this is the constant pressure setpoint for the water supply system. Through constant pressure PID regulation, the water pressure in the water supply network is kept constant at 0.514 MPa. Compared to the previous 0.55 MPa, this effectively reduces the energy consumption of the water pumps.

[0062] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for dynamic constant pressure water supply in industrial parks, characterized in that, The method includes the following steps: Obtain the number of water-using enterprises, count the number of water-using enterprises and label it as n, and set the minimum water pressure value P for each water-using enterprise. 0i , where i is the statistical water-using enterprise number, i is a positive integer, and i = 1, 2, 3, ..., n; The effective water supply coefficient is set as J. i Through formula Y i =P 0i / 0.9J i The required water pressure Y for the pumping station of the i-th water user enterprise is calculated. i ; For all calculated Y i Perform descending sorting to obtain a one-dimensional array Y = (Y (1) Y (2) , ..., Y (n) ), (i) = (1), (2), (3), ..., (n), represent the water-using enterprise labels after descending sorting; Set the water supply pressure of the water supply room to Y. o And Y o Let Y be the maximum value of a one-dimensional array. Then, Y o =Y (1) =Ymax; Let P be the water pressure group and Q be the flow rate group for the sorted n water-using enterprises, and: P=(P (1) ,P (2) ,…,P (n) ),Q=(Q (1) ,Q (2) ,…,Q (n) ); Let Q be the pipeline flow rate of the water-using enterprise when using water. (i) ; Determine Q (1) Is it equal to 0? If it is not equal to 0, then Y (1) This is the set value for constant pressure water supply in the water pumping station. If Q (1) If the value is equal to 0, then determine the second largest value Y in the one-dimensional array Y. (2) If Q (2) Not equal to 0, Y (2) This is the set value for constant pressure water supply in the water pumping station. Similarly, through dynamic adjustment and judgment, the current set value for constant pressure water supply in the water pumping station is made to the optimal value. The concept of the effective water supply coefficient takes into account the pipeline losses during transportation, and since the distance from each water user to the water pumping station is different, the consumption during use is also different for each water user. The 0.9J i This is because a 10% margin in water pressure needs to be considered during actual water supply. When Q (i) When Q = 0, it indicates that the water-using enterprise is in a state of no water use, and the water demand of the water-using enterprise is not considered during water supply; when Q = 0, it indicates that the water-using enterprise is in a state of no water use, and the water demand of the water-using enterprise is not considered during water supply. (i) ≠0 indicates that the water-using enterprise is in a water-using state; Let P be the actual water pressure of the (i)th enterprise. (i) And it must satisfy P (i) >P 0(i) P 0(i) Let P be the minimum water pressure value for the (i)th water user enterprise. (i) <P 0(i) If the water supply is below the demand of the water-using enterprises, it indicates a leak in the water transport network. In this case, it is necessary to manually adjust the constant pressure water supply setpoint of the water pumping station to ensure that P... (i) >P 0(i) At the same time, an alarm signal is sent to notify maintenance personnel to inspect the pipeline network; The alarm signal is used to alert maintenance personnel, thereby improving the safety of the water supply. The Y o The needs of all water users should be met.

2. A dynamic constant pressure water supply system for industrial parks, characterized in that, The system includes a data acquisition module, a data processing module, a data analysis module, an execution module, and an alarm module. The data acquisition module collects the number of water-using enterprises and sends the collected data to the data processing module. The data processing module marks and counts the number of water-using enterprises, calculates the required water pressure of the pumping station for the i-th water-using enterprise, and sends the result to the data analysis module for analysis. The data analysis module sorts the required water pressure of the pumping station for the i-th water-using enterprises and, through analysis, determines the optimal value for constant pressure water supply from the pumping station. The optimal value for constant pressure water supply from the pumping station is then sent to the execution module. The execution module supplies water based on the received optimal value for constant pressure water supply from the pumping station. The alarm module sends an alarm signal to notify maintenance personnel to inspect the pipeline network when the water supply is lower than the needs of the water-using enterprises. The data analysis module sorts the water pressure required by the pumping stations of i water-using enterprises and, through analysis, determines the optimal value for constant pressure water supply from the current pumping station. This process includes: The calculated water pressure Y required for the pumping stations of all water-using enterprises i Perform descending sorting to obtain a one-dimensional array Y = (Y (1) Y (2) , ..., Y (n) ), (i) = (1), (2), (3), ..., (n), represent the water-using enterprise labels after descending sorting; Set the water supply pressure of the water supply room to Y. o And Y o Let Y be the maximum value of a one-dimensional array. Then, Y o =Y (1) =Ymax; Let Q be the group of pipeline flow rates of the sorted n water-using enterprises, and: Q=(Q (1) ,Q (2) ,…,Q (n) ); Let Q be the pipeline flow rate of the water-using enterprise when using water. (i) ; Determine Q (1) Is it equal to 0? If it is not equal to 0, then Y (1) This is the set value for constant pressure water supply in the water pumping station. If Q (1) If the value is equal to 0, then determine the second largest value Y in the one-dimensional array Y. (2) If Q (2) Not equal to 0, Y (2) This is the set value for constant pressure water supply in the water pumping station. Similarly, through dynamic adjustment and judgment, the current set value for constant pressure water supply in the water pumping station is made to the optimal value.

3. A device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the dynamic constant pressure water supply method for industrial parks as described in claim 1.

4. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the dynamic constant pressure water supply method for an industrial park as described in claim 1.

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