A method and system for balancing secondary water supply inflow and main network

Abstract

The present disclosure provides a method and system for balancing the water inflow of a secondary water supply and the main network, the method comprising the following steps: obtaining the pressure value of the water inlet pipe of a secondary water supply tank; comparing the pressure value with a pressure threshold, if the pressure value is greater than the pressure threshold, sending an opening signal to the water inlet valve of the secondary water supply tank; if the pressure value is less than the pressure threshold, sending a closing signal to the water inlet valve; the pressure threshold is negatively correlated with the user's water demand. The present disclosure can adjust the pressure threshold according to the user's water demand and the liquid level of the secondary water supply tank to control the balance of the water inflow and the main network, and reduce the deviation between the water supply of the main network and the actual water demand before and after the user's water consumption peak.

Description

Technical Field

[0001] The present disclosure relates to the technical field of secondary water supply, and in particular to a method and system for balancing the water intake of a secondary water supply with a main water network. Background Art

[0002] The existing water supply system cannot be intelligently controlled and allocated regionally, and the secondary water supply needs of each community cannot be fully met at the same time. How to achieve a balance between the water supply of the main network and the secondary water supply of each community is a problem that the water plant and the secondary water supply equipment need to solve together; in order to solve the above problems, the existing technology has developed real-time monitoring of the flow and pressure of the main network, and adjusting the water supply of the municipal network according to the changes in the flow and pressure of the main network, to ensure that the water supply main network does not generate negative pressure to achieve the purpose of balance. However, before and after the peak of user water use, this method of adjusting the water supply of the main network will cause the water supply of the main network to deviate from the actual demand. Summary of the invention

[0003] The present invention provides a method and system for balancing the water inflow of a secondary water supply with a main water network, which can reduce the deviation between the water supply of the main water network and the actual demand before and after the peak of water use by users.

[0004] In order to solve the above technical problems, the present disclosure provides the following technical solutions:

[0005] As one aspect of an embodiment of the present disclosure, a method for balancing the water inflow of a secondary water supply and a main water network is provided, comprising the following steps:

[0006] Get the pressure value of the water inlet pipe of the secondary water supply tank;

[0007] The pressure value is compared with the pressure threshold. If the pressure value is greater than the pressure threshold, an open signal is sent to the water inlet valve of the secondary water supply tank; if the pressure value is less than the pressure threshold, a close signal is sent to the water inlet valve; the pressure threshold is negatively correlated with the water demand of the user.

[0008] Optionally, the negative correlation change is: as the amount of water required by the user increases, the pressure threshold is lowered; as the amount of water required by the user decreases, the pressure threshold is increased.

[0009] Optionally, the user's required water volume is predicted by statistically analyzing the user's historical water usage data.

[0010] Optionally, the method further comprises the following steps:

[0011] Get the liquid level value of the secondary water supply tank;

[0012] If the liquid level value is greater than the maximum liquid level value, a closing signal is sent to the water inlet valve; if the liquid level value is lower than the minimum liquid level value, an opening signal is sent to the water inlet valve.

[0013] Optionally, the method further comprises the following steps:

[0014] Obtain historical user water demand;

[0015] According to the historical user demand water volume, it is determined whether the current period is a low-peak water usage period or a peak water usage period; if it is a low-peak water usage period, the pressure threshold is increased; if it is a peak water usage period, the pressure threshold is lowered.

[0016] As another aspect of the embodiment of the present disclosure, a secondary water supply inflow and main network balancing system is also provided, comprising:

[0017] A pressure sensor is used to obtain the pressure value of the water inlet pipe of the secondary water supply tank;

[0018] The controller compares the pressure value with the pressure threshold. If the pressure value is greater than the pressure threshold, an opening signal is sent to the water inlet valve of the secondary water supply tank; if the pressure value is less than the pressure threshold, a closing signal is sent to the water inlet valve; the pressure threshold is negatively correlated with the water demand of the user.

[0019] Optionally, the water inlet valve is a solenoid valve.

[0020] Optionally, it also includes: a liquid level sensor for obtaining the liquid level value of the secondary water supply tank, and the controller implements the following functions: if the liquid level value is greater than the maximum liquid level value, a closing signal is sent to the water inlet valve; if the liquid level value is lower than the minimum liquid level value, an opening signal is sent to the water inlet valve.

[0021] Optionally, the pressure threshold is negatively correlated with the user's demand for water volume, and specifically changes as follows: historical user demand for water volume values ​​are obtained, and according to the historical user demand for water volume, whether the current period is a low-peak period or a peak period of water use; if it is a low-peak period of water use, the pressure threshold is increased; if it is a peak period of water use, the pressure threshold is lowered.

[0022] The beneficial effects of the present disclosure are: adjusting the pressure threshold according to the user's water demand and the liquid level of the secondary water supply tank to control the balance between the water intake and the main network, and reducing the deviation between the main network water supply and the actual water demand before and after the user's water consumption peak. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic flowchart of the steps of controlling a water inlet valve by a pressure sensor in the present disclosure is shown;

[0024] Figure 2 A schematic flowchart of the steps of controlling a water inlet valve by a liquid level sensor in the present disclosure is shown;

[0025] Figure 3The system block diagram of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the disclosed embodiments. Obviously, the described embodiments only disclose a part of the embodiments, not all of the embodiments. Based on the embodiments in the disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of public protection.

[0027] Example 1

[0028] A method for balancing the secondary water supply inflow and the main water network, comprising the following steps:

[0029] S101, obtaining the pressure value of the water inlet pipe of the secondary water supply tank;

[0030] S201, comparing the pressure value with a pressure threshold;

[0031] S301. Determine whether the pressure value is greater than a threshold value; if the pressure value is greater than the pressure threshold value, send an opening signal to the water inlet valve 4 of the secondary water supply tank; if the pressure value is less than the pressure threshold value, send a closing signal to the water inlet valve 4; the pressure threshold value is negatively correlated with the water volume demanded by the user.

[0032] As a preferred implementation manner, the negative correlation change is: as the amount of water required by the user increases, the pressure threshold is lowered; as the amount of water required by the user decreases, the pressure threshold is increased.

[0033] As a preferred implementation, the user's required water volume is predicted by statistically analyzing the user's historical water usage data.

[0034] In this embodiment, the main network supplies water to the secondary water supply tank through the water inlet pipe, and a pressure sensor 2 is arranged on the inner wall of the water inlet pipe. The pressure sensor 2 is connected to the controller 1. The controller 1 obtains the pressure value and controls the opening or closing of the water inlet valve 4 according to whether the pressure value is greater than the pressure threshold. For example, if the pressure value is greater than the pressure threshold, the controller 1 sends an opening signal to the water inlet valve 4 to make the water in the main network flow into the secondary water supply tank. This method can reduce the pressure in the main network and store a certain amount of water in the secondary water supply tank; if the pressure value is less than the pressure threshold, the controller 1 sends a closing signal to the water inlet valve 4 to stop supplying water to the secondary water supply tank to meet the normal water supply of the main network to the user.

[0035] The pressure threshold is not a fixed value. The pressure threshold is negatively correlated with the user's demand for water, that is, the pressure threshold changes with the change of the user's demand for water. For example, if the user's demand for water increases rapidly during the peak period, the pressure threshold is lowered, so that the water inlet condition becomes lower and the water inlet volume increases slowly; if the user's demand for water decreases rapidly during the peak period, the pressure threshold is increased, and the water inlet volume decreases slowly. By adjusting the pressure threshold, the balance between the water inlet volume and the main network is controlled.

[0036] The user's water demand is predicted based on the user's historical water consumption data. Because it takes some time to adjust the water volume in the secondary water supply tank, the water inlet valve 4 should be closed or opened in advance based on the user's water consumption data to reduce the deviation between the user's water supply from the main network and the actual demand before and after the user's water consumption peak.

[0037] As a preferred embodiment, the method further comprises the following steps:

[0038] S10, obtaining the liquid level value of the secondary water supply tank;

[0039] S11. Determine whether the liquid level value is greater than the maximum liquid level value or less than the minimum liquid level value; if the liquid level value is greater than the maximum liquid level value, send a closing signal to the water inlet valve 4; if the liquid level value is lower than the minimum liquid level value, send an opening signal to the water inlet valve 4.

[0040] In this embodiment, the liquid level sensor 3 is arranged in the secondary water supply tank, and the liquid level value has the highest priority. If the liquid level value is higher than the highest water level line, the controller 1 sends a closing signal to the water inlet valve 4. Even if the water pressure of the main network is large, the secondary water supply tank does not need to be filled with water; if the liquid level value is lower than the lowest water level line, the controller 1 sends an opening signal to the water inlet valve 4. Even if the water pressure of the main network is small, the secondary water supply tank needs to be filled with water; if the liquid level value is between the lowest water level line and the highest water level line, the water inlet valve 4 is opened or closed according to the pressure value.

[0041] As a preferred implementation, before obtaining the liquid level value of the secondary water supply tank, the following steps are also included:

[0042] Obtain historical user water demand;

[0043] According to the historical user demand water volume, it is determined whether the current period is a low-peak water usage period or a peak water usage period; if it is a low-peak water usage period, the pressure threshold is increased; if it is a peak water usage period, the pressure threshold is lowered.

[0044] Example 2

[0045] A secondary water supply inflow and main network balance system, comprising:

[0046] Pressure sensor 2, used to obtain the pressure value of the water inlet pipe of the secondary water supply tank;

[0047] The controller 1 compares the pressure value with the pressure threshold. If the pressure value is greater than the pressure threshold, an opening signal is sent to the water inlet valve 4 of the secondary water supply tank; if the pressure value is less than the pressure threshold, a closing signal is sent to the water inlet valve 4. The pressure threshold changes in a negative correlation with the water demand of the user.

[0048] In this embodiment, a pressure sensor 2 is arranged inside the water inlet pipe, and the pressure sensor 2 is connected to the controller 1. The controller 1 obtains a pressure value, and controls the opening or closing of the water inlet valve 4 according to the comparison between the pressure value and the pressure threshold value to adjust the balance between the water inlet amount and the main network; for example, if the pressure value is greater than the pressure threshold value, an opening signal is sent to the water inlet valve 4 of the secondary water supply tank; if the pressure value is less than the pressure threshold value, a closing signal is sent to the water inlet valve 4;

[0049] The pressure threshold is not a fixed value. The pressure threshold changes in a negative correlation with the user's demand for water, that is, the pressure threshold changes with the change of the user's demand for water. For example, if the user's demand for water increases rapidly during the peak period, the pressure threshold is lowered, so that the water inlet condition becomes lower and the water inlet slowly increases; if the user's demand for water decreases rapidly during the peak period, the pressure threshold is increased, and the water inlet slowly decreases. By adjusting the pressure threshold, the balance between the water inlet and the main network is controlled;

[0050] The user's water demand is predicted based on the user's historical water consumption data. Because it takes some time to adjust the water volume in the secondary water supply tank, the water inlet valve 4 should be closed or opened in advance based on the user's water consumption data to reduce the deviation between the user's water supply from the main network and the actual demand before and after the user's water consumption peak.

[0051] As a preferred implementation, the water inlet valve 4 is a solenoid valve.

[0052] As a preferred embodiment, it also includes: a liquid level sensor 3 for obtaining the liquid level value of the secondary water supply tank, and the controller 1 implements the following functions: if the liquid level value is greater than the maximum liquid level value, a closing signal is sent to the water inlet valve 4; if the liquid level value is lower than the minimum liquid level value, an opening signal is sent to the water inlet valve 4.

[0053] In this embodiment, a liquid level sensor 3 is provided in the secondary water supply tank, and the liquid level sensor 3 is connected to the controller 1. The controller 1 collects the liquid level signal monitored by the liquid level sensor 3 to obtain the liquid level value. The liquid level value has the highest priority. By comparing the liquid level value with the minimum liquid level value and the maximum liquid level value, it is determined whether to open or close the water inlet valve 4. The opening or closing of the water inlet valve 4 is controlled according to the liquid level value to adjust the balance between the water intake and the main network. For example, if the liquid level value is higher than the maximum water level line, the controller 1 sends a closing signal to the water inlet valve 4, that is, no matter how high the water pressure of the main network is, the secondary water supply tank does not need to be inlet; if the liquid level value is lower than the minimum water level line, the controller 1 sends an opening signal to the water inlet valve 4, that is, no matter how low the water pressure of the main network is, the secondary water supply tank also needs to be inlet; if the liquid level value is between the minimum water level line and the maximum water level line, the opening or closing of the water inlet valve 4 is determined according to the pressure value.

[0054] As a preferred implementation manner, the pressure threshold is negatively correlated with the user's demand for water volume, and specifically changes as follows: historical user demand for water volume values ​​are obtained, and the current period is determined to be a low-peak period or a peak period based on the historical user demand for water volume; if it is a low-peak period, the pressure threshold is increased; if it is a peak period, the pressure threshold is lowered.

[0055] Although the disclosed embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for balancing the secondary water supply inflow and the main network, characterized in that: The following steps are involved: Get the pressure value of the water inlet pipe of the secondary water supply tank; The pressure value is compared with the pressure threshold. If the pressure value is greater than the pressure threshold, an opening signal is sent to the water inlet valve of the secondary water supply tank; if the pressure value is less than the pressure threshold, a closing signal is sent to the water inlet valve; the pressure threshold changes in a negative correlation with the water demand of the user; The user's required water volume is predicted by statistically analyzing the user's historical water consumption data; When the user's demand for water increases during the peak period, the pressure threshold is lowered, and when the user's demand for water decreases during the peak period, the pressure threshold is raised.

2. The method for balancing the secondary water supply inflow and the main network according to claim 1, characterized in that: The method further comprises the following steps: Get the liquid level value of the secondary water supply tank; If the liquid level value is greater than the maximum liquid level value, a closing signal is sent to the water inlet valve; if the liquid level value is lower than the minimum liquid level value, an opening signal is sent to the water inlet valve.

3. A secondary water supply inflow and main network balance system, characterized in that: include: A pressure sensor is used to obtain the pressure value of the water inlet pipe of the secondary water supply tank; The controller compares the pressure value with the pressure threshold. If the pressure value is greater than the pressure threshold, an opening signal is sent to the water inlet valve of the secondary water supply tank; if the pressure value is less than the pressure threshold, a closing signal is sent to the water inlet valve; the user's demand for water is predicted by statistically analyzing the user's historical water usage data; the pressure threshold is negatively correlated with the user's demand for water; when the user's demand for water increases during peak hours, the pressure threshold is lowered, and when the user's demand for water decreases during peak hours, the pressure threshold is increased.

4. The secondary water supply inflow and main network balance system according to claim 3, characterized in that: The water inlet valve is a solenoid valve.

5. The secondary water supply inflow and main network balance system according to claim 3, characterized in that: Also includes: A liquid level sensor is used to obtain the liquid level value of the secondary water supply tank. The controller implements the following functions: if the liquid level value is greater than the maximum liquid level value, a closing signal is sent to the water inlet valve; if the liquid level value is lower than the minimum liquid level value, an opening signal is sent to the water inlet valve.

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