A water storage and power generation integrated intelligent secondary water supply device

Abstract

The application discloses a kind of water storage and power generation integrated intelligent secondary water supply device;Including municipal pipeline, the water pump is connected on the municipal pipeline, the check valve is connected on one side of the water pump, the end of the municipal pipeline is connected with three-way valve, the other two ends of the three-way valve are connected with household pipeline and water storage pipeline respectively, the electric valve is connected on the water storage pipeline, the turbine generator pump is connected on one side of the electric valve, the pressure gauge is connected on one side of the turbine generator pump, the end of the water storage pipeline is communicated with water storage tank;It further includes PLC control box, the PLC control box is electrically connected with the water pump, the electric valve, the turbine generator pump, the pressure gauge, water level sensor and water quality sensor respectively;The application realizes water storage and energy storage at the same time when electricity and water trough is used by the water storage tank of secondary water supply, releases the stored drinking water when electricity and water peak is used, and simultaneously converts stored energy into electric energy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of secondary water supply, and particularly relates to a water storage and power generation integrated intelligent secondary water supply device. BACKGROUND

[0002] High-rise residence is a common type of urban residential housing, and water supply and power supply are basic functions that should be provided by the housing. The water pressure of general water supply plants can only ensure normal water supply of 5-6 storey housing, and for high-rise residence, an additional water supply pressurizing device is needed to increase the water pressure and ensure normal water supply. Such a device is called a secondary water supply device. A common secondary water supply device is a water pump combined with a water tank to supply water, and the principle is to lift water by multiple water pumps to a water storage tank installed in the intermediate layer of the high-rise building, and supply water to each user in the building by the water tank combined with the water pump when needed. Through observation, it is found that the current urban high-rise residence has the following problems:

[0003] 1. There is a significant peak-valley phenomenon in resident electricity consumption, that is, electricity consumption is high in the morning and evening of weekdays, and relatively low at noon and in the early morning. However, power generation cannot follow the peak-valley phenomenon, resulting in waste in the valley, so flat electricity is needed.

[0004] 2. There is also a significant peak-valley phenomenon in resident water consumption, that is, water consumption is high in the morning and evening of weekdays, and relatively low at noon and in the early morning. However, it is difficult for a water supply plant to completely follow the peak-valley phenomenon of water consumption and adjust the production plan of tap water.

[0005] Considering that the peak and valley of resident electricity and water consumption have very similar curves, the application proposes a water storage and power generation integrated intelligent secondary water supply device, and the basic principle is to store drinking water in the form of potential energy by consuming electric energy when electricity and water consumption are low, and to release the stored drinking water and drive the generator to generate electricity when electricity and water consumption are high, thereby realizing the conversion of electric energy and potential energy of the secondary water supply tank. Meanwhile, an intelligent controller is installed to realize the above functions. SUMMARY

[0006] The application aims to provide a water storage and power generation integrated intelligent secondary water supply device to solve the problems in the background.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a water storage and power generation integrated intelligent secondary water supply device, which comprises a municipal pipeline, a water pump connected to the municipal pipeline, the water pump being used to realize water extraction through the municipal pipeline, a check valve connected to one side of the water pump and the municipal pipeline, the check valve being used to control the water supply of the municipal pipeline, a three-way valve connected to the end of the municipal pipeline, the other two ends of the three-way valve being respectively connected to a household pipeline and a water storage pipeline, the three-way valve being used to control the water supply to flow to the household pipeline, the water storage pipeline or both, an electric valve connected to the water storage pipeline, the electric valve being used to control the water supply of the water storage pipeline, a turbine generator pump connected to one side of the electric valve and the water storage pipeline, the turbine generator pump being used to realize water supply in the water storage pipeline or generate electricity through water flow impact in the water storage pipeline, a pressure gauge connected to one side of the turbine generator pump and the water storage pipeline, the pressure gauge being used to detect the water pressure in the water storage pipeline, and a water storage tank connected to the end of the water storage pipeline, the water storage tank being used to store water during the low water consumption period and assist secondary water supply during the high water consumption period.

[0008] The PLC control box is electrically connected with the water pump, the electric valve, the turbine generator pump and the pressure gauge, and is used to control and adjust the water pump, the electric valve, the turbine generator pump and the pressure gauge.

[0009] Preferably, the water level sensor is arranged on the side wall of the water storage tank and is used to detect the water level in the water storage tank, and the water quality sensor is arranged at the bottom of the water storage tank and is used to detect the water quality in the water storage tank.

[0010] Preferably, the PLC control box adopts a PID control algorithm to control the water storage amount in the water storage tank, the water level height data in the water storage tank collected by the water level sensor and the set water level threshold value are used to control water storage, thereby controlling the opening and closing of the electric valve, and the water inflow and outflow are controlled, so that the system can work in different working modes.

[0011] Preferably, the mathematical expression of the PID control algorithm is:

[0012]

[0013] wherein K p is a proportional gain, e(t) is a deviation number, U(t) is a controlled output, K I is an integral gain, and KD is a differential gain;

[0014] The calculation of e(t) is as follows: e(t) = T1-T2, wherein T1 is a set water level threshold, and T2 is an actually measured water level height.

[0015] Preferably, the working modes include a water storage and supply mode, a water supply and power generation mode, an independent water supply and power generation mode, and a water quality monitoring switching mode.

[0016] Preferably, the steps of the water storage and supply mode are as follows:

[0017] The PLC control box starts the turbine generator pump in the water pump mode, and opens the electric valve to deliver water from the municipal pipeline to the water storage tank at a certain flow rate;

[0018] Meanwhile, the PLC control box controls the flow rate of water pumped by the water pump and the turbine generator pump, so that part of the tap water directly and smoothly flows to the water faucet and water equipment of the user to meet the water demand of the user;

[0019] The water level sensor continuously monitors the water level change in the water storage tank, and when the water level reaches a preset water level threshold, it indicates that the water storage tank has stored sufficient water, and the PLC control box closes the electric valve and the turbine generator pump to stop water supply.

[0020] Preferably, the steps of the water supply and power generation mode are as follows:

[0021] The PLC control box opens the electric valve, and the check valve is also in an open state, allowing part of the tap water to directly flow from the municipal pipeline to the user to meet the normal water demand of the user;

[0022] Meanwhile, the PLC control box supplies water to the user through the water storage tank, ensuring the stability of water pressure and the water quality meeting the standard;

[0023] The water source in the water storage tank flows into the water storage pipeline, and at the same time, when the water flows through the water storage pipeline, the power generation structure of the turbine generator pump is driven to work, so that electric energy is generated by using the kinetic energy of the water flow, and the electric energy is stored, and part of the electricity demand in the peak period is met.

[0024] Preferably, the steps of the independent water supply and power generation mode are as follows:

[0025] When the water demand of the user reaches the trough, the check valve is closed, and the PLC control box opens the electric valve;

[0026] The water source in the water storage tank serves as a water source, flows into the water storage pipeline, and drives the power generation structure of the turbine generator pump to work when water flows through the water storage pipeline, generates electric energy by using the kinetic energy of the water flow, and stores the electric energy, while meeting part of the electricity demand during peak period.

[0027] Preferably, the water quality monitoring and switching mode is as follows:

[0028] The PLC control box continuously monitors the water quality sensor data before water supply, and triggers an alarm when the water quality is not up to standard;

[0029] The PLC control box automatically closes the electric valve of the water storage tank for water supply, and stops the water supply of the water storage tank;

[0030] At the same time, the system supplies water to users through the municipal pipeline, the water pump, the check valve, the three-way valve and the indoor pipeline;

[0031] Switch to the water supply mode of the municipal pipeline, and the municipal pipeline starts to supply water to users to ensure that users obtain water that meets the water quality standard;

[0032] Then the water storage tank discharges the tap water inside that does not meet the water quality standard through the drain pipe at the bottom, and then cleans the inner wall of the water storage tank and stores water again.

[0033] Preferably, the water storage and water supply mode, the water supply and power generation mode, the independent water supply and power generation mode and the water quality monitoring and switching mode also adopt a PID control algorithm for control and adjustment, and the opening degrees of the electric valve, the check valve and the three-way valve are adjusted by monitoring the changes in the water level or water supply demand of the water storage tank, and the flow rates of the water pump and the turbine generator pump are also controlled to ensure that the water supply flow rate meets the set requirements;

[0034] At the same time, by optimizing the parameters of the PID control algorithm, the stable control and rapid response of the water supply process are improved to meet the changing demands during low and high water consumption periods;

[0035] In terms of power generation function control, a PID control algorithm of turbine speed or power generation power is designed, the opening degrees of the electric valve, the check valve and the three-way valve are adjusted according to the real-time monitored speed or power demand signal, and the water flow rate is controlled to maintain stable power generation effect;

[0036] The water flow rate is adjusted by the PID control algorithm to ensure that the power generation system maintains stable output power under different loads, thereby improving the energy utilization efficiency of the system.

[0037] Compared with the prior art, the present application has the following beneficial effects:

[0038] The application realizes water storage and energy storage at the water and electricity trough time, releases the stored drinking water at the water and electricity peak time, and converts the stored energy into electric energy by means of the water storage tank for secondary water supply;

[0039] The water storage tank functions to store the water for the user end at the water trough time and supply water for the user end at the water peak time, and a PID control algorithm is designed by comparing the difference between the collected liquid level data and the expected liquid level, so as to better control the opening and closing of the electric valve and the check valve, control the water inflow and outflow, and enable the device to work in different working modes, thereby ensuring the water quantity and water pressure for the end user;

[0040] The turbine generator pump functions to store and generate electricity in the system, when the turbine generator pump generates electricity, the turbine converts the water flow potential energy into mechanical energy to generate electricity, and at the same time, the water supply at the water peak time is supplemented, and the pressure of the pipe network in the secondary water supply process is reduced; when the turbine generator pump consumes electric energy, the turbine generator pump is equivalent to a water pump, which assists the lower main water pump to pump water; in addition, the relative flow of the two water pumps is controlled by an algorithm, so as to control the water flow into the water supply tank or directly into each floor user;

[0041] The four intelligent working modes make full use of the electric valve, check valve, water pump and turbine generator pump; through reasonable switching and optimized operation of the four modes, the water supply system can efficiently store water at the low water demand period, control the water flow by the electric valve and check valve, and generate electricity and rapidly supply water by the water pump at the water demand peak period; at the same time, the water quality monitoring system ensures that the user obtains standard tap water supply; this flexible operation mode not only improves the efficiency and stability of the water supply system, but also realizes sustainable utilization of resources and comprehensive management of energy. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a system structure schematic diagram of the application;

[0043] Figure 2 It is a system structure schematic diagram of the application; Figure 1 It is an enlarged schematic diagram of position A in the application;

[0044] Figure 3 It is an enlarged schematic diagram of position B in the application; Figure 1 It is an enlarged schematic diagram of position B in the application;

[0045] Figure 4 It is a water storage and water supply mode system block diagram of the application;

[0046] Figure 5 It is a water supply and power generation mode system block diagram of the application;

[0047] Figure 6The system block diagram of the independent water supply and power generation mode of the application;

[0048] Figure 7 The system block diagram of the water quality monitoring and switching mode of the application.

[0049] In the figure: 1, municipal pipeline; 2, water pump; 3, check valve; 4, household pipeline; 5, water storage pipeline; 6, three-way valve; 7, electric valve; 8, turbine generator pump; 9, pressure gauge; 10, water storage tank; 11, drain pipe. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the application will be apparently and completely described below with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0051] Please refer to Figures 1-7 The application provides a technical solution: a water storage and power generation integrated intelligent secondary water supply device, which comprises a municipal pipeline 1, a water pump 2 connected to the municipal pipeline 1, the water pump 2 being used for realizing water extraction through the municipal pipeline 1, a check valve 3 connected to one side of the water pump 2 and the municipal pipeline 1, the check valve 3 being used for controlling the water supply on-off of the municipal pipeline 1, a three-way valve 6 connected to the end of the municipal pipeline 1, the other two ends of the three-way valve 6 being respectively connected to a household pipeline 4 and a water storage pipeline 5, the three-way valve 6 being used for controlling the water supply flow direction of the household pipeline 4, the water storage pipeline 5 or the household pipeline 4 and the water storage pipeline 5 at the same time, an electric valve 7 connected to the water storage pipeline 5, the electric valve 7 being used for controlling the water supply on-off of the water storage pipeline 5, a turbine generator pump 8 connected to one side of the electric valve 7 and the water storage pipeline 5, the turbine generator pump 8 being used for realizing water supply delivery in the water storage pipeline 5 or power generation through water flow impact in the water storage pipeline 5, a pressure gauge 9 connected to one side of the turbine generator pump 8 and the water storage pipeline 5, the pressure gauge 9 being used for detecting the water pressure in the water storage pipeline 5, and a water storage tank 10 connected to the end of the water storage pipeline 5, the water storage tank 10 being used for water storage during the low water consumption period of citizens and for auxiliary secondary water supply during the peak water consumption period of citizens.

[0052] The PLC control box is electrically connected with the water pump 2, the electric valve 7, the turbine generator pump 8 and the pressure gauge 9 respectively, and is used for controlling and adjusting the water pump 2, the electric valve 7, the turbine generator pump 8 and the pressure gauge 9.

[0053] The water storage tank 10 realizes water inflow or outflow through a PPR (polypropylene) pipe, is connected with the pressure gauge 9 through the PPR pipe, is used for detecting the water flow pressure flowing through the PPR pipe, and is assisted by the electric valve 7 to control the water flow rate of the water pump into or out of the water storage tank 10. In the water storage tank 10, a water level sensor and a water quality sensor for detecting water age are arranged. The water level sensor is used to determine the water storage amount in the water storage tank 10, and the water quality sensor is used to detect the water age of the water stored in the water storage tank 10. Through the sensors and the algorithm in the control cabinet, when water supply is needed and when water is needed, corresponding control is performed.

[0054] The turbine generator pump 8 is connected with the electric valve 7 through a PPR pipe and is controlled by the PLC control cabinet. When the water storage tank 10 needs to store water, the turbine generator pump 8 works as a water pump at this time, and the turbine generator pump 8 further pumps the water pumped out from the municipal pipeline 1 to the high-level water storage tank 10 (water storage and water supply mode). When the water storage tank 10 participates in water supply, the water flow will flow through the turbine generator pump 8, and the water kinetic energy is converted into electric energy by rotating the blades of the turbine generator pump 8 (water supply and power generation mode, independent water supply and power generation mode).

[0055] The check valve 3 is connected through PPR pipes on both sides. The check valve 3 is placed on the left side of the device branch, which can ensure that the water pumped from the municipal pipeline 1 cannot flow back to the municipal pipeline 1 through the water pump 2 (part of the water pump 2 is not sealed, and if the control is not good, the water backflow is easy to occur). Due to the one-way flow characteristic of the check valve 3, the water quality of the municipal pipeline 1 can be ensured to a certain extent.

[0056] In the secondary water supply process, the electric valve 7 can adjust the opening degree according to the control of the control cabinet, so as to control the water flow rate.

[0057] In the secondary water supply, the water pump 2 plays a key role in pumping water to a higher floor. Through the related algorithm of the PLC control cabinet, the flow rates of the water pump 2 and the turbine generator pump 8 and the opening degrees of the valves are controlled, so that the water pump 2 can perform corresponding actions in different working modes, and realize the related functions of on-demand water supply.

[0058] In order to realize the detection of the liquid level and water quality in the water storage tank 10, in the embodiment, the water level sensor is preferably arranged on the side wall of the water storage tank 10 for detecting the water level inside the water storage tank 10, and the water quality sensor is arranged at the bottom of the water storage tank 10 for detecting the water quality inside the water storage tank 10.

[0059] In order to realize the algorithm control of the water storage in the water storage tank 10, in the embodiment, the PLC control box preferably adopts the PID control algorithm to control the water storage amount in the water storage tank 10, the liquid level height data collected by the water level sensor and the set liquid level threshold value are used to control the water storage, and then the opening and closing of the electric valve 7 are controlled, and the water inflow and outflow are controlled, so that the system can work in different working modes.

[0060] In order to realize the calculation and processing of the water storage, and facilitate the automatic control of the water storage, in the embodiment, the mathematical expression of the PID control algorithm is:

[0061]

[0062] wherein K p is the proportional gain, e(t) is the deviation number, U(t) is the controlled output, K I is the integral gain, and K D is the differential gain.

[0063] The calculation of e(t) is as follows: e(t) = T1-T2, wherein T1 is the set water level threshold value, and T2 is the actually measured water level height.

[0064] In order to realize the working operation of multiple modes, in the embodiment, the working modes include the water storage and supply mode, the water supply and power generation mode, the independent water supply and power generation mode, and the water quality monitoring switching mode.

[0065] In the period with low water demand, such as before dawn and afternoon, the water supply system will use this mode; at this time, most residents are in a resting or working state, and the water demand is relatively low; the system adopts intelligent control, and the water storage tank 10 is placed in the water storage mode, at this time, the turbine generator pump 8 works in the mode of water pump, and cooperates with the municipal pipeline 1 and the water pump 2 to ensure the water supply in the valley to meet the water demand of the user; the water level sensor is used to monitor the water level change, and once the water level reaches the preset water level, the control system will timely close the turbine generator pump 8 and the electric valve 7, so as to stop the water supply to the water storage tank 10, in the embodiment, the steps of the water storage and supply mode are as follows:

[0066] The PLC control box starts the turbine generator pump 8 in the water pump mode, and opens the electric valve 7 to deliver water from the municipal pipeline 1 to the water storage tank 10 at a certain flow rate;

[0067] Meanwhile, the PLC control box controls the flow rate of water pumped by the water pump 2 and the turbine generator pump 8, so that part of the tap water directly and smoothly flows to the water faucet and water-using equipment of the user to meet the user's water demand;

[0068] The water level sensor continuously monitors the water level change in the water storage tank 10, and when the water level reaches the preset water level threshold, it indicates that the water storage tank 10 has stored enough water, and the PLC control box closes the electric valve 7 and the turbine generator pump 8 to stop water supply.

[0069] In the period of high water demand, the water supply system adopts a double water supply strategy to meet the demand of the user. On the one hand, the system directly introduces water from the municipal pipeline 1, and on the other hand, the system supplies water to the user by using the water storage tank 10, and at the same time, the turbine generator pump 8 generates electricity to meet the water and electricity demand of residents during the peak period. In this embodiment, preferably, the steps of the water supply and power generation mode are as follows:

[0070] The PLC control box opens the electric valve 7, and the check valve 3 is also in an open state, allowing part of the tap water to directly flow from the municipal pipeline 1 to the user to meet the normal water demand of the user;

[0071] At the same time, the PLC control box supplies water to the user through the water storage tank 10, ensuring the stability of water pressure and the water quality meeting the standard;

[0072] The water source in the water storage tank 10 flows into the water storage pipeline 5, and at the same time, when the water flows through the water storage pipeline 5, it drives the power generation structure of the turbine generator pump 8 to work, generates electricity by using the kinetic energy of the water flow, and stores the electricity, at the same time, meets part of the electricity demand during the peak period.

[0073] When the municipal pipeline 1 has a burst pipe or other conditions or the water in the water storage tank 10 needs to be used as soon as possible due to long water age, the water supply from the municipal pipeline 1 is cut off, only the water in the water storage tank 10 is used for supply; the water supply system generates electricity by using the power generation structure of the turbine generator pump 8 while continuously supplying water to the residents; both the stable supply of water and the use of kinetic energy generated by water flow are realized to meet the electricity demand of residents or feedback to the power grid. In this embodiment, preferably, the steps of the independent water supply and power generation mode are as follows:

[0074] When the water demand of the user reaches the trough, the check valve 3 is closed, and the PLC control box opens the electric valve 7;

[0075] The water source in the water storage tank 10 flows into the water storage pipeline 5 as a water source, and at the same time, when the water flows through the water storage pipeline 5, the power generation structure of the turbine generator pump 8 is driven to work, the kinetic energy of the water flow is used to generate electric energy, and the electric energy is stored, and part of the electricity demand in the peak period is met.

[0076] In the water supply process, when the water quality sensor detects that the water quality in the water storage tank 10 does not meet the standard, this mode is entered, the electric valve 7 is closed, the system takes water from the municipal pipeline 1 through the water pump 2 and supplies water to the floor residents to ensure that the users obtain water sources meeting the water quality standard; at the same time, the water that does not meet the standard is discharged through the drain pipe 11 or the filtering system, and the water storage tank 10 is cleaned or maintained, in the embodiment, preferably, the steps of the water quality monitoring switching mode are as follows:

[0077] The PLC control box continuously monitors the water quality sensor data before water supply, and when the water quality does not meet the standard, the PLC control box triggers an alarm;

[0078] The PLC control box automatically closes the electric valve 7 of the water storage tank 10 for water supply, and stops the water supply of the water storage tank 10;

[0079] At the same time, the system supplies water to the users through the municipal pipeline 1, the water pump 2, the check valve 3, the three-way valve 6 and the household pipeline 4;

[0080] Switch to the water supply mode of the municipal pipeline 1, and the municipal pipeline 1 starts to supply water to the users to ensure that the users obtain water sources meeting the water quality standard;

[0081] Then the water storage tank 10 discharges the tap water that does not meet the water quality standard in the interior through the drain pipe 11 at the bottom, and after cleaning the inner wall of the water storage tank 10, water storage is performed again.

[0082] In order to realize precise control and adjustment of the whole system and realize the effect of high automation control, in the embodiment, preferably, the water storage and water supply mode, the water supply and power generation mode, the independent water supply and power generation mode and the water quality monitoring switching mode also adopt a PID control algorithm for control and adjustment, the opening degrees of the electric valve 7, the check valve 3 and the three-way valve 6 are adjusted by monitoring the changes of the water level of the water storage tank 10 or the water supply demand, and the flow rates of the water pump 2 and the turbine generator pump 8 are also controlled to ensure that the water supply flow rate meets the set requirements;

[0083] At the same time, by optimizing the parameters of the PID control algorithm, the stable control and rapid response of the water supply process are improved to meet the changing demands in the low and high peak periods of water use;

[0084] In terms of power generation function control, a PID control algorithm of turbine speed or power generation power is designed, and according to the real-time monitored speed or power demand signal, the opening degrees of the electric valve 7, the check valve 3 and the three-way valve 6 are adjusted to control the water flow to maintain stable power generation effect;

[0085] The water flow is adjusted through the PID control algorithm to ensure that the power generation system maintains stable output power under different loads, thereby improving the energy utilization efficiency of the system.

[0086] The working principle and use process of the present application are as follows:

[0087] The steps of the water storage and supply mode are as follows:

[0088] The PLC control box starts the turbine generator pump 8 in the water pump mode, and opens the electric valve 7 to deliver water from the municipal pipeline 1 to the water storage tank 10 at a certain flow rate;

[0089] Meanwhile, the PLC control box controls the flow rates of the water pump 2 and the turbine generator pump 8 to pump water, so that part of the tap water directly flows to the water faucet and water-using equipment of the user to meet the user's water demand;

[0090] The water level sensor continuously monitors the water level change in the water storage tank 10, and when the water level reaches the preset water level threshold, it indicates that the water storage tank 10 has stored enough water, and the PLC control box closes the electric valve 7 and the turbine generator pump 8 to stop water supply;

[0091] The steps of the water supply and power generation mode are as follows:

[0092] The PLC control box opens the electric valve 7, and the check valve 3 is also in an open state, allowing part of the tap water to directly flow from the municipal pipeline 1 to the user to meet the user's normal water demand;

[0093] Meanwhile, the PLC control box supplies water to the user through the water storage tank 10, ensuring the stability of water pressure and the water quality meeting the standard;

[0094] The water source in the water storage tank 10 serves as a water source and flows into the water storage pipeline 5, and at the same time, when the water flows through the water storage pipeline 5, it drives the power generation structure of the turbine generator pump 8 to work, generates electric energy by using the kinetic energy of the water flow, and stores the electric energy, thereby meeting part of the electricity demand during peak period;

[0095] The steps of the independent water supply and power generation mode are as follows:

[0096] When the user's water demand reaches the trough, the check valve 3 is closed, and the PLC control box opens the electric valve 7;

[0097] The water source in the water storage tank 10 serves as a water source, flows into the water storage pipeline 5, and drives the power generation structure of the turbine generator pump 8 to work while the water flows through the water storage pipeline 5, generates electric energy by using the kinetic energy of the water flow, stores the electric energy, and meets part of the electricity demand in the peak period;

[0098] The water quality monitoring switching mode is as follows:

[0099] The PLC control box continuously monitors the water quality sensor data before water supply, and triggers an alarm when the water quality is not up to standard;

[0100] The PLC control box automatically closes the electric valve 7 of the water storage tank 10 for water supply, and stops the water supply of the water storage tank 10;

[0101] At the same time, the system supplies water to users through the municipal pipeline 1, the water pump 2, the check valve 3, the three-way valve 6 and the household pipeline 4;

[0102] Switch to the water supply mode of the municipal pipeline 1, and the municipal pipeline 1 starts to supply water to users to ensure that users obtain water sources meeting the water quality standards;

[0103] Then the water storage tank 10 discharges the tap water inside which does not meet the water quality standards through the drain pipe 11 at the bottom, and cleans the inner wall of the water storage tank 10 before storing water again.

[0104] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A water storage and power generation integrated intelligent secondary water supply device, comprising a municipal pipeline (1), characterized in that: The municipal pipeline (1) is connected with a water pump (2), the water pump (2) is used to realize the extraction of water through the municipal pipeline (1), one side of the water pump (2) is connected with a check valve (3) in the municipal pipeline (1), the check valve (3) is used to control the on-off of the municipal pipeline (1) for water supply, the end of the municipal pipeline (1) is connected with a three-way valve (6), the other two ends of the three-way valve (6) are connected with a household pipeline (4) and a water storage pipeline (5) respectively, the three-way valve (6) is used to control the water flow to the household pipeline (4), the water storage pipeline (5) or to the household pipeline (4) and the water storage pipeline (5) at the same time, the water storage pipeline (5) is connected with an electric valve (7), the electric valve (7) is used to control the on-off of the water storage pipeline (5), one side of the electric valve (7) is connected with a turbine generator pump (8) on the water storage pipeline (5), the turbine generator pump (8) is used to realize the delivery of water in the water storage pipeline (5) or to generate electricity through the water flow impact in the water storage pipeline (5), one side of the turbine generator pump (8) is connected with a pressure gauge (9) on the water storage pipeline (5), the pressure gauge (9) is used to detect the water pressure in the water storage pipeline (5), the end of the water storage pipeline (5) is connected with a water storage tank (10), the water storage tank (10) is used to store water during the low water consumption period and to assist secondary water supply during the peak water consumption period; It also includes a PLC control box, the PLC control box is electrically connected with the water pump (2), the electric valve (7), the turbine generator pump (8) and the pressure gauge (9) respectively, the PLC control box is used to control and adjust the water pump (2), the electric valve (7), the turbine generator pump (8) and the pressure gauge (9), the PLC control box is electrically connected with a water level sensor and a water quality sensor; The water level sensor is arranged on the side wall of the water storage tank (10) and is used to detect the water level in the water storage tank (10), the water quality sensor is arranged at the bottom of the water storage tank (10) and is used to detect the water quality in the water storage tank (10); The PLC control box uses a PID control algorithm to control the water storage amount in the water storage tank (10), the water level height data collected by the water level sensor and the set water level threshold value are used to control water storage, thereby controlling the opening and closing of the electric valve (7), and by controlling the water inflow and outflow, the system can work in different working modes; The mathematical expression of the PID control algorithm is: ， wherein is a proportional gain, is a bias number, is a controlled output quantity, is an integral gain, is a derivative gain; is calculated as follows: , find the is a set water level threshold, is the actual measured water level height; The working modes include water storage and water supply mode, water supply and power generation mode, independent water supply and power generation mode and water quality monitoring and switching mode; The water storage supply mode, the water supply power generation mode, the independent water supply power generation mode and the water quality monitoring switching mode also adopt PID control algorithm for control adjustment, and the opening degrees of the electric valve (7), the check valve (3) and the three-way valve (6) are adjusted by monitoring the water level of the water storage tank (10) or the change of water supply demand, and the flow of the water pump (2) and the turbine generator pump (8) is also controlled to ensure that the water supply flow meets the set requirements; At the same time, by optimizing the parameters of the PID control algorithm, the stable control and rapid response of the water supply process are improved to meet the changing demand of low and peak periods of water use; In terms of power generation function control, a PID control algorithm of turbine generator pump speed or power generation power is designed, and the opening degrees of the electric valve (7), the check valve (3) and the three-way valve (6) are adjusted according to the real-time monitored speed or power demand signal to control the water flow to maintain stable power generation effect; By adjusting the water flow through the PID control algorithm, the power generation system can maintain stable output power under different loads to improve the energy utilization efficiency of the system.

2. The water storage and power generation integrated intelligent secondary water supply device according to claim 1, characterized in that: The steps of the water storage supply mode are as follows: The PLC control box starts the turbine generator pump (8) in the water pump mode, and opens the electric valve (7) to deliver the water supply of the municipal pipeline (1) to the water storage tank (10) at a certain flow rate; At the same time, the PLC control box controls the flow of water pumped by the water pump (2) and the turbine generator pump (8) to make part of the tap water directly and smoothly flow to the water faucet and water equipment of the user to meet the water demand of the user; And the water level sensor continuously monitors the change of water level in the water storage tank (10), and when the water level reaches the preset water level threshold, it indicates that the water storage tank (10) has stored enough water, and the PLC control box closes the electric valve (7) and the turbine generator pump (8) to stop water supply.

3. The water storage and power generation integrated intelligent secondary water supply device according to claim 1, characterized in that: The steps of the water supply power generation mode are as follows: The PLC control box opens the electric valve (7), and the check valve (3) is also in an open state, allowing part of the tap water to directly flow from the municipal pipeline (1) to the user to meet the normal water demand of the user; At the same time, the PLC control box supplies water to the user through the water storage tank (10) to ensure the stability of water pressure and the water quality meets the standard; The water source in the water storage tank (10) serves as a water source and flows into the water storage pipeline (5), and at the same time, when the water flows through the water storage pipeline (5), it drives the power generation structure of the turbine generator pump (8) to work, generates electric energy by using the kinetic energy of the water flow, and stores the electric energy, which meets part of the electricity demand in peak period.

4. The water storage and power generation integrated intelligent secondary water supply device according to claim 1, characterized in that: The steps of the independent water supply power generation mode are as follows: When the water demand of the user reaches the trough, the check valve (3) is closed, and the PLC control box opens the electric valve (7); The water source in the water storage tank (10) serves as a water source, flows into the water storage pipeline (5), and drives the power generation structure of the turbine generator pump (8) to work when the water flows through the water storage pipeline (5), generates electric energy by using the kinetic energy of the water flow, stores the electric energy, and meets part of the electricity demand in the peak period.

5. The water storage and power generation integrated intelligent secondary water supply device according to claim 4, characterized in that: The water quality monitoring switching mode is as follows: The PLC control box continuously monitors the water quality sensor data before water supply, and triggers an alarm when the water quality is not up to standard; The PLC control box automatically closes the electric valve (7) of the water storage tank (10) for water supply, and stops the water storage tank (10) for water supply; At the same time, the system supplies water to users through the municipal pipeline (1), the water pump (2), the check valve (3), the three-way valve (6), and the household pipeline (4); Switch to the water supply mode of the municipal pipeline (1), and the municipal pipeline (1) starts to supply water to users to ensure that users obtain water sources meeting water quality standards; Then the water storage tank (10) discharges tap water not meeting water quality standards in the interior through the drain pipe (11) at the bottom, and cleans the inner wall of the water storage tank (10) before storing water again.

Images