Secondary water supply system

Abstract

The utility model provides a secondary water supply system, which relates to the technical field of water supply and comprises energy storage equipment and secondary water supply equipment, the energy storage equipment is communicated with the secondary water supply equipment; the energy storage equipment is used for storing electric energy by using external energy and supplying power to the secondary water supply equipment in a water peak period; the external energy comprises at least one of solar energy, kinetic energy of water flow in a public water supply pipeline and electric energy of a public power grid in a low ebb period; the secondary water supply equipment comprises a pressure pump set; a water inlet of the booster pump set is communicated with a public water supply pipeline, and a water outlet is communicated with a target water supply pipe network. The technical problem that an existing secondary water supply system is high in operation cost can be solved.

Description

Technical Field

[0001] The present application relates to the field of water supply technology, and in particular to a secondary water supply system. Background Art

[0002] At present, in order to meet residents' demand for water pressure, many old communities have installed secondary water supply equipment, which can pressurize municipal public water supply before providing it to residents.

[0003] However, the secondary water supply equipment currently on the market does not take the issue of electricity consumption into consideration. Although it solves the problem of insufficient water pressure for residents, it is accompanied by the problem of high electricity costs. Utility Model Content

[0004] The present application provides a secondary water supply system, which can solve the technical problem of high operating costs of existing secondary water supply equipment.

[0005] Specifically, the secondary water supply system includes an energy storage device and a secondary water supply device; the energy storage device is connected to the secondary water supply device;

[0006] The energy storage device is used to store electric energy by using external energy and supply power to the secondary water supply device during peak water consumption period; the external energy includes at least one of the following: solar energy, kinetic energy of water flow in a public water supply pipeline, and electric energy of a public power grid during off-peak period;

[0007] The secondary water supply equipment includes a booster pump group; the water inlet of the booster pump group is connected to a public water supply pipeline, and the water outlet of the booster pump group is connected to a target water supply network.

[0008] In some embodiments, the energy storage device includes a first energy storage sub-device; the first energy storage sub-device is connected to the public power grid; and the first energy storage sub-device is used to store electric energy of the public power grid during off-peak hours.

[0009] In some embodiments, the energy storage device further includes a second energy storage sub-device; the secondary water supply system further includes a photovoltaic power generation device;

[0010] The photovoltaic power generation device is connected to the second energy storage sub-device; the second energy storage sub-device is used to store the electrical energy transmitted by the photovoltaic power generation device.

[0011] In some embodiments, the energy storage device also includes a third energy storage sub-device; the secondary water supply equipment also includes a hydroelectric power generation device; the hydroelectric power generation device is arranged in the common water supply pipeline, and the hydroelectric power generation device is connected to the third energy storage sub-device; the third energy storage sub-device is used to store the electric energy transmitted by the hydroelectric power generation device.

[0012] In some embodiments, the secondary water supply device further comprises a bypass pipe; a check valve is provided on the bypass pipe;

[0013] The water inlet of the override pipe is communicated with the public water supply pipeline, and the water outlet of the override pipe is communicated with the target water supply network.

[0014] In some embodiments, the secondary water supply system further comprises a control subsystem;

[0015] The control subsystem is in communication with the booster pump group and is used to control the output frequency of the booster pump group.

[0016] In some embodiments, the secondary water supply equipment further includes a water inlet manifold, a butterfly valve, a flexible joint, a first check valve, a water outlet manifold, a pressure switch, and an air pressure tank;

[0017] The water inlet of the water inlet manifold is connected to the common water supply pipeline, the water outlet of the water inlet manifold is connected to the water inlet of the butterfly valve, the water outlet of the butterfly valve is connected to one end of the flexible joint, the other end of the flexible joint is connected to the water inlet of the booster pump group, the water outlet of the booster pump group is connected to the water inlet of the first check valve, the water outlet of the first check valve is connected to the water inlet of the water outlet manifold, and the water outlet of the water outlet manifold is connected to the target water supply network; the pressure switch and the air pressure tank are respectively connected to the water outlet manifold.

[0018] In some embodiments, the secondary water supply system further includes a pressure sensor, and the pressure sensor is disposed at the end of the target water supply network.

[0019] In some embodiments, the booster pump group includes a permanent magnet intelligent variable frequency pump.

[0020] In some embodiments, the secondary water supply device further includes a device pressure sensor; the device pressure sensor is disposed on a water outlet pipe connected to a water outlet of the booster pump group.

[0021] The secondary water supply system provided in the present application stores grid valley electricity through energy storage equipment. During peak water usage periods, the energy storage equipment supplies power to the secondary water supply equipment. This can fully utilize solar energy, the kinetic energy of water flow in public water supply pipes, and grid valley electricity, thereby effectively reducing the operating costs of the secondary water supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 1 ;

[0024] Figure 2 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 2 ;

[0025] Figure 3 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 3 ;

[0026] Figure 4 A schematic diagram of the side structure of an integrated secondary water supply device provided in an embodiment of the present application;

[0027] Figure 5 This is a front structural schematic diagram of an integrated secondary water supply device provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 10: Energy storage equipment;

[0030] 11: First energy storage sub-device;

[0031] 12: second energy storage sub-device;

[0032] 13: The third energy storage sub-device;

[0033] 20: Water supply equipment;

[0034] 201: Booster pump set;

[0035] 202: water inlet manifold;

[0036] 203: Butterfly valve;

[0037] 204: flexible joint;

[0038] 205: first check valve;

[0039] 206: water outlet collection pipe;

[0040] 207: pressure switch;

[0041] 208: Air pressure tank;

[0042] 209: Equipment pressure sensor;

[0043] 210: Beyond the tube;

[0044] 211: second check valve;

[0045] 30: Control subsystem;

[0046] 40: Public water supply pipelines;

[0047] 50: Target water supply network;

[0048] 60: Photovoltaic power generation device;

[0049] 70: Public power grid;

[0050] 80: pressure sensor;

[0051] 90: Shell. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0053] There are usually two types of secondary water supply equipment at present, one is tank-type superimposed water supply equipment, and the other is water tank variable frequency water supply equipment. Since water tank variable frequency water supply equipment starts pressurizing from zero water pressure, while tank-type superimposed water supply equipment starts pressurizing from municipal water supply pressure, but the target pressure values ​​of the two are the same, tank-type superimposed water supply equipment requires less pressure increase than water tank variable frequency water supply equipment and is more energy-efficient.

[0054] However, the secondary water supply equipment currently on the market does not take the issue of electricity consumption into consideration. Although it solves the problem of insufficient water pressure for residents, it is accompanied by the problem of high electricity costs.

[0055] In view of the above-mentioned technical problems, a secondary water supply system is provided in an embodiment of the present application. By making full use of solar energy, the kinetic energy of water flow in public water supply pipes, and the valley electricity of the power grid, the operating cost of the secondary water supply equipment can be effectively reduced; in addition, by dynamically adjusting the output frequency of the booster pump group, energy-saving and water-saving effects can be further achieved.

[0056] The technical solution provided by the present application is described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other, and the same or similar contents will not be described repeatedly in different embodiments.

[0057] Reference Figure 1 , Figure 1 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 1 In some embodiments of the present application, the secondary water supply system includes an energy storage device 10 and a secondary water supply device 20.

[0058] The energy storage device 10 is used to store electrical energy using external energy and to supply power to the secondary water supply device 20 during peak water consumption periods.

[0059] Optionally, the external energy includes at least one of the following: solar energy, kinetic energy of water flow in a public water supply pipeline, and electrical energy from a public power grid during off-peak hours.

[0060] It is understandable that storing electricity during off-peak hours of the power grid and releasing it for use during peak water usage hours can help reduce the overall operating costs of the above-mentioned secondary water supply system.

[0061] The secondary water supply device 20 includes a booster pump group 201 . The water inlet of the booster pump group 201 is connected to the public water supply pipeline 40 , and the water outlet of the booster pump group 201 is connected to the target water supply network 50 .

[0062] In some embodiments, the water inlet of the booster pump assembly 201 is connected to the public water supply pipeline 40 to ensure a stable water supply, and the water outlet is connected to the target water supply network 50 to pressurize the water in the public water supply pipeline 40 and transport it to the target water supply network 50.

[0063] The public water supply pipeline 40 can be understood as a municipal water supply pipeline, and the target water supply network 50 is a water supply network for residents.

[0064] In some embodiments, the output frequency of the booster pump group 201 can be adjusted according to actual water supply demand to meet the water supply demand in different time periods.

[0065] For example, during peak water usage periods, the output frequency of the booster pump group 201 can be increased to ensure the water pressure for residents; during low water usage periods, the output frequency of the booster pump group 201 can be reduced due to the decrease in water consumption, thereby not only further saving electricity but also effectively saving water resources.

[0066] Optionally, the booster pump group 201 may adopt a permanent magnet intelligent variable frequency pump (such as a rare earth-free permanent magnet intelligent variable frequency pump) to further reduce the energy consumption of the above-mentioned secondary water supply system.

[0067] The secondary water supply system provided in the embodiment of the present application can effectively reduce the operating cost of secondary water supply equipment by making full use of solar energy, the kinetic energy of water flow in public water supply pipes, and the valley electricity of the power grid; in addition, by dynamically adjusting the output frequency of the booster pump group, energy-saving and water-saving effects can be further achieved.

[0068] Reference Figure 2 , Figure 2 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 2 .

[0069] In some embodiments of the present application, the energy storage device 10 includes a first energy storage sub-device 11 ; the first energy storage sub-device 11 is connected to a public power grid 70 .

[0070] In some embodiments, the first energy storage sub-device 11 can be used to store the electric energy of the public grid 70 during off-peak hours (also called "off-peak hours" or "off-peak hours"). These hours are usually when the grid load is low and the electricity price is more favorable.

[0071] Optionally, the first energy storage sub-device 11 can be directly connected to the public power grid 70, and can absorb electric energy from the power grid during off-peak hours and store it.

[0072] It is understandable that storing electrical energy during off-peak hours of the grid can be released for use during periods of higher electricity prices or peak water usage, thereby reducing the overall operating costs of the above system.

[0073] In some implementations, the grid off-peak period may be determined based on information released by the operator of the public grid 70 .

[0074] Optionally, the first energy storage sub-device 11 may use a battery pack, a supercapacitor or other energy storage technologies to store and release electrical energy.

[0075] In some embodiments of the present application, the energy storage device 10 further includes a second energy storage sub-device 12, and the secondary water supply system further includes a photovoltaic power generation device 60. The photovoltaic power generation device 60 is connected to the second energy storage sub-device 12; the second energy storage sub-device 12 is used to store the electrical energy transmitted by the photovoltaic power generation device 60.

[0076] In some embodiments, the second energy storage sub-device 12 can store a large amount of electrical energy when there is sufficient sunlight, and release the electrical energy when the system needs it, to ensure the stable operation of the system. This design improves the utilization rate of solar energy in the secondary water supply system and enhances the energy self-sufficiency of the secondary water supply system.

[0077] Optionally, the photovoltaic power generation device 60 can be installed at a suitable location, such as a roof, an open space, or a special photovoltaic support, so as to fully receive sunlight.

[0078] Optionally, the second energy storage sub-device 12 may also use a battery pack, a supercapacitor or other energy storage technologies to store and release electrical energy.

[0079] It is understandable that photovoltaic power generation is a clean, emission-free way of energy utilization, which does not require fuel and does not produce pollutants. The introduction of photovoltaic power generation devices in the secondary water supply system not only helps to reduce the operating costs of the system, but also reduces dependence on traditional energy and promotes the sustainable development of energy.

[0080] In some embodiments of the present application, the energy storage device 10 further includes a third energy storage sub-device 13; the secondary water supply system further includes a hydroelectric power generation device; the hydroelectric power generation device is connected to the third energy storage sub-device 13; the third energy storage sub-device 13 is used to store the electric energy transmitted by the hydroelectric power generation device.

[0081] In some embodiments, the hydroelectric power generation device can be arranged at the water outlet of the public water supply pipeline 40, so that the kinetic energy of the water flow in the public water supply pipeline can be directly used to generate electricity, making full use of the existing water flow resources.

[0082] It is understandable that hydropower is a clean and renewable way of energy utilization, which produces almost no pollutants and has little impact on the environment. The introduction of hydropower generation equipment in the secondary water supply system not only improves the self-sufficiency of the system, but also promotes the diversification and sustainable development of energy.

[0083] Optionally, the third energy storage sub-device 13 may use a battery pack, a supercapacitor or other energy storage technologies to store and release electrical energy.

[0084] In the embodiment of the present application, by introducing a hydroelectric power generation device and a third energy storage sub-device 13 into the secondary water supply system, effective utilization and storage of water kinetic energy is achieved, further improving the self-sufficiency and environmental protection characteristics of the above-mentioned secondary water supply system, which helps to reduce the operating cost of the secondary water supply system.

[0085] In some embodiments of the present application, the secondary water supply system may include a first energy storage sub-device 11, a second energy storage sub-device 12 and a third energy storage sub-device 13. These three energy storage sub-devices are responsible for storing electrical energy from different energy sources to provide stable power support for the system.

[0086] In some embodiments of the present application, the secondary water supply system further includes a control subsystem 30 ; the control subsystem 30 is connected to the booster pump group 22 and is used to control the output frequency of the booster pump group 22 .

[0087] In some embodiments, the control subsystem 30 may be used to:

[0088] Monitor the remaining power of the first energy storage sub-device 11, the second energy storage sub-device 12 and the third energy storage sub-device 13; according to the remaining power and power supply priority of the first energy storage sub-device 11, the second energy storage sub-device 12 and the third energy storage sub-device 13, select one of the first energy storage sub-device 11, the second energy storage sub-device 12 and the third energy storage sub-device 13 to supply power to the secondary water supply device 20.

[0089] In some embodiments, the first energy storage sub-device 11, the second energy storage sub-device 12 and the third energy storage sub-device 13 are independent of each other. The power supply priority of the first energy storage sub-device 11 can be higher than that of the second energy storage sub-device 12, or lower than that of the second energy storage sub-device 12.

[0090] Exemplarily, it is assumed that the power supply priority of the first energy storage sub-device 11 is higher than that of the second energy storage sub-device 12. Then in some embodiments, after the first energy storage sub-device 11 is fully charged, it is used first, and when the remaining power of the first energy storage sub-device 11 is lower than the preset power threshold, it is stopped from being used and returns to the charging state. The control subsystem 30 switches to the second energy storage sub-device 12, and when the remaining power of the second energy storage sub-device 12 is lower than the preset power threshold, it is stopped from being used and returns to the charging state. The control subsystem 30 switches to the first energy storage sub-device 11, and the cycle continues.

[0091] In some embodiments, the secondary water supply device 20 can also be directly connected to the public power grid 70. When the remaining power of the first energy storage sub-device 11 and the second energy storage sub-device 12 is lower than a preset threshold, the power supply can be switched to the public power grid 70. When it is detected that the remaining power of any one of the first energy storage sub-device 11 and the second energy storage sub-device 12 is greater than or equal to the preset power threshold, the power is switched to the energy storage sub-device, and the cycle continues.

[0092] It should be noted that the above-mentioned secondary water supply system may include only the first energy storage sub-device 11, or only the second energy storage sub-device 12 and the photovoltaic power generation device 60; it may also include the first energy storage sub-device 11, the second energy storage sub-device 12 and the photovoltaic power generation device 60 at the same time; this is not limited in the embodiments of the present application.

[0093] In the embodiment of the present application, the control subsystem 30 can make better energy allocation and control decisions by real-time monitoring and analyzing the remaining power of each energy storage sub-device, thereby effectively improving the energy utilization efficiency and economy of the above-mentioned secondary water supply system.

[0094] In some embodiments of the present application, the control subsystem 30 may also be used to:

[0095] During the low water usage period, the output frequency of the booster pump group 201 is reduced, and during the peak water usage period, the output frequency of the booster pump group 21 is increased.

[0096] Optionally, the control subsystem 30 may be a remote control system or a part of a remote control device. In some embodiments, the control subsystem 30 may receive information fed back from the energy storage device 10 and / or the secondary water supply device 20 via remote communication means (such as the Internet, wireless networks, etc.), and based on the information, generate a control signal for the energy storage device 10 and / or the secondary water supply device 20.

[0097] Optionally, the control subsystem 30 may also be deployed in the secondary water supply device 20 , and the control subsystem 30 may include a processor and a memory, wherein the memory is used to store programs or instructions. The processor is used to execute the programs or instructions to control the energy storage device 10 and / or the secondary water supply device 20 .

[0098] Reference Figure 3 , Figure 3 A schematic diagram of the structure of a secondary water supply system provided in an embodiment of the present application Figure 3 .

[0099] In some embodiments of the present application, the secondary water supply equipment 20 also includes an inlet manifold 202, a butterfly valve 203, a flexible joint 204, a first check valve 205, an outlet manifold 206, a pressure switch 207, an air pressure tank 208, an equipment pressure sensor 209, an override pipe 210, and a second check valve 211.

[0100] In some embodiments, the water inlet manifold 202 is the entrance of the entire secondary water supply system, and is responsible for receiving water flow from the public water supply pipeline 40. When the water inlet manifold 202 is connected to the public water supply pipeline 40, it can continuously and stably receive water supply to meet the needs of subsequent treatment and pressurized water supply.

[0101] Butterfly valve 203 is a flow control valve that can be used to regulate or cut off water flow. In some embodiments, it can be used to control the water flow entering the secondary water supply system, or completely shut off the water flow when necessary.

[0102] The flexible joint 204 is mainly used to connect the pipeline and has a certain elasticity and shock absorption effect. It can reduce the stress caused by pipeline vibration or thermal expansion and contraction, and protect the pipeline system from damage.

[0103] The first check valve 205 can prevent water from flowing back. It can ensure that water can only flow from the water inlet manifold 202 to the inside of the system and cannot flow in the opposite direction.

[0104] The water outlet manifold 206 is the outlet of the entire secondary water supply system and is responsible for delivering the treated water to the user end.

[0105] The pressure switch 207 can be used to monitor the water pressure in the system and control the start and stop of the water pump according to the set pressure value. It helps to maintain the water pressure in the system stable and ensure the quality of water supply.

[0106] The air pressure tank 208 can be used to store a certain amount of water and regulate the water pressure in the system. When the water pump stops working, the air pressure tank can provide certain water pressure support to ensure the continuity of water supply.

[0107] The equipment pressure sensor 209 can be used to monitor the water pressure in the system in real time and transmit the data to the control subsystem 30. It works together with the pressure switch 207 to ensure that the system can adjust the working state according to the real-time water pressure situation.

[0108] The bypass pipe 210 is used to bypass certain components (such as the booster pump unit 201) and directly supply water to users under certain circumstances.

[0109] A second check valve 211 is installed on the overrunning pipe 210 to prevent water from flowing back to an unintended pipeline.

[0110] It is understandable that when the water inlet manifold 202 is connected to the public water supply pipeline 40, the water first enters the system through the butterfly valve 203, and after being damped and buffered by the flexible joint 204, it is prevented from backflowing through the first check valve 205. Then, the water enters the booster pump group 201 for pressurization, and is finally delivered to the user end through the water outlet manifold 206.

[0111] During the whole process, the pressure switch 207 and the equipment pressure sensor 209 continuously monitor the water pressure in the system to ensure the normal operation of the booster pump group 201 and other equipment. The air pressure tank 208 provides the necessary water pressure support when the water pump stops working.

[0112] In some embodiments, the control valve of the override pipe 210 is in communication with the control subsystem 30. The control subsystem can be used to control the override pipe 210 to be open and control the booster pump group 201 to stop working during the low water consumption period.

[0113] It is understandable that during periods of low water usage, the system has lower demands for water pressure and flow, and does not need to maintain high-pressure operation. Therefore, during periods of low water usage, using bypass pipe 210 to directly supply water can achieve energy and electricity saving effects.

[0114] In some embodiments, the secondary water supply system further includes a pressure sensor 80 , which is disposed at the end of the target water supply network 50 ; the control subsystem 30 is in communication with the pressure sensor 80 .

[0115] In some embodiments, the control subsystem 30 is further used to: obtain the pressure value collected by the pressure sensor 80; when the pressure value is less than a preset pressure threshold, increase the output frequency of the booster pump group 201.

[0116] In some embodiments, the pressure sensor 80 continuously monitors the pressure at the end of the target water supply network 50 and transmits the real-time pressure value to the control subsystem 30. After the control subsystem 30 obtains the pressure value transmitted by the pressure sensor 80, it compares it with the preset pressure threshold. The pressure threshold is the minimum pressure value required for the stable operation of the system and the normal water use of the user, and can be set according to the system design requirements and actual conditions.

[0117] When the pressure value is less than the preset pressure threshold, it means that the water pressure at the end of the pipe network is insufficient and cannot meet the normal water demand of the user. At this time, the control subsystem 30 will send a control signal to the frequency converter or driver of the booster pump group 201 to increase its output frequency. By increasing the speed of the booster pump group 201, the pressure and flow of the water supply can be increased to ensure that the water pressure at the end of the pipe network is restored to above the preset pressure threshold.

[0118] In some embodiments, the control subsystem 30 can continuously monitor the pressure value transmitted by the pressure sensor 80 and make necessary adjustments based on real-time data. If the pressure value at the end of the pipe network is still lower than the preset pressure threshold after increasing the output frequency of the booster pump group 201, the control subsystem 30 can further increase the output frequency or take other measures (such as starting the standby pump group) to ensure the water supply pressure.

[0119] In some embodiments, the secondary water supply system described above may be integrated into an integrated secondary water supply device.

[0120] In order to better understand the embodiments of the present application, refer to Figure 4 and Figure 5 , Figure 4 A schematic diagram of the side structure of an integrated secondary water supply device provided in an embodiment of the present application; Figure 5 This is a front structural schematic diagram of an integrated secondary water supply device provided in an embodiment of the present application.

[0121] like Figure 4 As shown, the integrated secondary water supply device includes a shell 90 , and each component described in the above embodiments can be arranged in the shell 90 .

[0122] like Figure 5 As shown, the photovoltaic power generation device 60 can be installed on the top of the housing 90 .

[0123] The integrated secondary water supply device provided in the embodiment of the present application can achieve the following beneficial effects:

[0124] 1. By configuring the energy storage device 10 to store electric energy during the low electricity price period and using it during the peak water consumption period or the peak electricity price period, it is possible to effectively save electricity bills and reduce operating costs.

[0125] 2. By configuring the photovoltaic power generation device 60, photovoltaic power generation can be used to store electrical energy, further reducing operating costs.

[0126] 3. By installing a pressure sensor 80 at the end of the target water supply network, the water pressure at the outlet end can be guaranteed.

[0127] 4. Taking advantage of the different water pressures used by users during low water usage periods and peak water usage periods, a logical control method is adopted to reduce the output frequency of the booster pump group during low water usage periods to achieve the purpose of saving water, energy and electricity; during peak water usage periods, the output frequency of the booster pump group is increased to ensure residents' water needs.

[0128] 5. By setting up the bypass pipe 210, the bypass pipe 210 can be used for direct supply during the period of low water consumption, so as to achieve energy saving and electricity saving of the equipment.

[0129] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0130] In the description of the embodiments of the present application, it should be understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0131] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. For example, it can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A secondary water supply system, characterized in that: It includes an energy storage device and a secondary water supply device; the energy storage device is connected to the secondary water supply device; The energy storage device is used to store electric energy using external energy and supply power to the secondary water supply device; the external energy includes at least one of the following: solar energy, kinetic energy of water flow in a public water supply pipeline, and electric energy of a public power grid during off-peak hours; The secondary water supply equipment includes a booster pump group; the water inlet of the booster pump group is connected to the public water supply pipeline, and the water outlet of the booster pump group is connected to the target water supply network.

2. The secondary water supply system according to claim 1, characterized in that: The energy storage device includes a first energy storage sub-device; the first energy storage sub-device is connected to the public power grid; the first energy storage sub-device is used to store the electric energy of the public power grid during off-peak hours.

3. The secondary water supply system according to claim 1, characterized in that: The energy storage device includes a second energy storage sub-device; the secondary water supply system also includes a photovoltaic power generation device; The photovoltaic power generation device is connected to the second energy storage sub-device; the second energy storage sub-device is used to store the electrical energy transmitted by the photovoltaic power generation device.

4. The secondary water supply system according to claim 1, characterized in that: The energy storage device includes a third energy storage sub-device; the secondary water supply equipment also includes a hydroelectric power generation device; the hydroelectric power generation device is arranged in the public water supply pipeline, and the hydroelectric power generation device is connected to the third energy storage sub-device; the third energy storage sub-device is used to store the electric energy transmitted by the hydroelectric power generation device.

5. The secondary water supply system according to claim 1, characterized in that: The secondary water supply equipment further comprises a bypass pipe; a check valve is arranged on the bypass pipe; The water inlet of the override pipe is communicated with the public water supply pipeline, and the water outlet of the override pipe is communicated with the target water supply network.

6. The secondary water supply system according to claim 1, characterized in that: The secondary water supply system also includes a control subsystem; The control subsystem is in communication with the booster pump group and is used to control the output frequency of the booster pump group.

7. The secondary water supply system according to claim 1, characterized in that: The secondary water supply equipment also includes a water inlet manifold, a butterfly valve, a flexible joint, a first check valve, a water outlet manifold, a pressure switch, and an air pressure tank; The water inlet of the water inlet manifold is connected to the common water supply pipeline, the water outlet of the water inlet manifold is connected to the water inlet of the butterfly valve, the water outlet of the butterfly valve is connected to one end of the flexible joint, the other end of the flexible joint is connected to the water inlet of the booster pump group, the water outlet of the booster pump group is connected to the water inlet of the first check valve, the water outlet of the first check valve is connected to the water inlet of the water outlet manifold, and the water outlet of the water outlet manifold is connected to the target water supply network; the pressure switch and the air pressure tank are respectively connected to the water outlet manifold.

8. The secondary water supply system according to claim 1 or 7, characterized in that: The secondary water supply system further includes a pressure sensor, which is disposed at the end of the target water supply network.

9. The secondary water supply system according to claim 1 or 7, characterized in that: The booster pump group includes a permanent magnet intelligent variable frequency pump.

10. The secondary water supply system according to claim 1 or 7, characterized in that: The secondary water supply equipment also includes an equipment pressure sensor; the equipment pressure sensor is arranged on a water outlet pipe connected to the water outlet of the booster pump group.

Images