Distributed type dwell and storage cooperative water supply system

Abstract

To provide a distributed type dwell and storage cooperative water supply system which belongs to the technical field of secondary water use in buildings to solve the problem of conventional water supply systems which require repeated starting and stopping of a water pump, resulting in low water supply efficiency.SOLUTION: A distributed type dwell and storage cooperative water supply system comprises a water storage device, a pressurizing device, a plurality of water storage and dwell devices, and a transport pipe network. The water storage device is connected to the pressurizing device via the transport pipe network, and the pressurizing device is connected to each floor water supply end via the transport pipe network. The water storage and dwell devices are respectively installed on at least some of the different floors. The water storage and dwell device includes a dwell water tank, a pressure sensor, and a solenoid valve. The solenoid valve controls the opening and closing of the floor water supply end of a floor where it is located and a pipeline between the dwell water tank and the pressurizing device. The pressure sensor is used to obtain the water pressure in the pipeline from the dwell water tank to the floor water supply end of the floor where it is located, and further includes an automatic controller. The solenoid valve, the pressure sensor, and the pressurizing device are all electrically connected to the automatic controller.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the technical field of secondary water supply for buildings, and more particularly to a distributed pressure-storage coordinated water supply system. [Background technology]

[0002] As shown in Figure 1, a conventional secondary water supply system for a building mainly consists of a storage facility 1 (water tank), a pressurization facility (water pump 2, pressure-stabilized air tank 3), and a transport pipe network 4. After municipal water enters the building's domestic water storage tank, it is pressurized by the water pump 2 and sent to users via the building's water supply pipe network 4. In theory, the effective volume of the pressure-stabilized tank 3 is the total volume that can be supplied to the pipe network while the water pump 2 is stopped, but it is limited by its location and the mechanical process of the airbag inflation and activation. In actual use, the effective volume of the pressure-stabilized tank 3 changes as the point of use changes.

[0003] For example, assume that the height of Building A is 60 m, the rated pressure of the secondary water supply system is 90 m, the effective volume of the selected pressure stabilization tank is 100 L, and the initial (unirrigated) pressure is 45 m.

[0004] Because the pressure in the pressure stabilization tank 3 cannot exceed the discharge pressure of the water pump, ideally, the pressure in the pressure stabilization tank 3 is 90 m and the water storage capacity is 100 L. For a typical barometric tank, the total volume is typically three times the effective volume, resulting in a total volume of 300 L. This means that for every 1 L of water dispensed from the pressure stabilization tank 3, the gas in the airbag must expand by 3 L. Using a simple approximation and assuming a constant gas temperature within the airbag, based on the ideal gas law (PV=nRT), the rate of pressure drop within the pressure stabilization tank 3 is much greater than the rate of water supply. This means that the effective volume for users on higher floors is much smaller than that for users on lower floors. As a result, during actual use, the so-called effective volume of the pressure stabilization tank 3 is lost. When water is consumed on higher floors, the pressure in the pipeline drops rapidly, causing the supply from the pressure stabilization tank 3 to become insufficient. When the water pump 2 starts, the pump must start.

[0005] At this time, there are two cases: (1) In the case of continuous low-flow water use, water pump 2 starts up and meets the user's water demand while replenishing water into pressure stabilization tank 3. Once the specified pressure is reached, the pump stops. The user switches to supplying water from pressure stabilization tank 3, but because the effective volume of the corresponding floor is small, the pressure in the pipe network quickly drops to meet the start-up condition of water pump 2. This cycle causes water pump 2 to start and stop frequently, moving the operating state away from the high-efficiency zone and reducing the energy efficiency level of the water supply unit.

[0006] (2) When multiple use points use water simultaneously and the flow rate is high, the pressure stabilization tank 3 cannot meet the simultaneous water demands of multiple users, and its internal effective volume is quickly consumed (a comprehensive calculation is required depending on the use points and flow rate). Since the pressure stabilization tank 3 is closer to the water pump 2 than the use points, the hydraulic loss from the water pump 2 outlet to the pressure stabilization tank 3 is smaller, so the water discharged by the water pump 2 is preferentially replenished to the pressure stabilization tank 3, which further affects the water supply to users. The replenishment process of the pressure stabilization tank 3 is nonlinear; that is, as the amount of water inside increases, the pressure in the airbag continues to rise, resulting in a continuous change in the load on the water pump 2 and further exacerbating pressure fluctuations in the pipeline network.

[0007] Overall, although the pressure stabilization tank installed in the water pump room has a regulating effect, it is limited by the randomness of the use point and its effective volume is very limited. At the same time, its presence often causes pressure fluctuations, which affects the water use experience, causes the water pump operating state to deviate from the high-efficiency range, and reduces energy efficiency. Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above analysis, an embodiment of the present invention aims to solve the problem that in the prior art water supply system, the water pump needs to be repeatedly started and stopped, resulting in low water supply efficiency. [Means for solving the problem]

[0009] The present invention provides a distributed pressure-storage coordinated water supply system, which includes a water storage device, a pressurizing device, a plurality of water storage and pressure storage devices, and a transport pipeline network; The water storage device is connected to a pressurizing device via a transport pipe network, and the pressurizing device is connected to the water supply terminals of each level via the transport pipe network, Each of the water storage and pressure holding devices is installed on at least some of the different floors, and the water storage and pressure holding devices are connected to the pressurizing device and the floor water terminal via a transport pipe network, The water storage and pressure maintaining device includes a pressure maintaining water tank, a pressure sensor, and a solenoid valve, the solenoid valve controls the opening and closing of the pipeline between the water supply end of the floor where the water storage tank is located and the pressurizing device, the pressure sensor is used to obtain the water pressure in the pipeline between the water supply end of the floor where the water storage tank is located, and further includes an automatic controller, the solenoid valve, the pressure sensor, and the pressurizing device are all electrically connected to the automatic controller, The automatic controller When the data of the pressure sensor of the A floor is in a downward trend and the downward speed is lower than the first preset threshold, the A floor water supply end is identified as being in the operation state of the single-pipe small flow water supply, and the automatic controller sends a closing signal to the A floor solenoid valve, so that the A floor water supply end is completely supplied with water from the A floor pressure holding water tank; If the difference between the data from the pressure sensor on the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, it is identified that a demand for large-flow water use is occurring at the water supply end of the A level, and the automatic controller sends an open signal to both the A level and the solenoid valves within the coordinated water supply level range of the A level, so that the water supply end of the A level is supplied with water from the A level and the pressurized water tank within the coordinated water supply level range of the A level.

[0010] In some embodiments, the initial pressure of the pressure-retaining water tank is P0, the minimum operating pressure required at the level water end connected to the pressure-retaining water tank is P1, and the pipeline pressure loss at the level water end connected to the pressure-retaining water tank is P2, where P0 > P1 + P2.

[0011] In some embodiments, the pressurized water tank includes an air bag, a pneumatic tank, and a connecting pipe, the air bag is located in the pneumatic tank, and the pressurized water tank is connected to the hierarchical branch pipe via the connecting pipe; In some embodiments, the transportation pipeline network includes a main pipeline and level branch pipelines installed at each level, The water storage device is connected to one end of the pressurizing device, the other end of the pressurizing device is connected to one end of each of the tier branch pipelines via the main pipeline, and the other ends of the tier branch pipelines are connected to the tier water terminal.

[0012] In some embodiments, the pressurized water tank is connected to the tier branch pipeline, the pressure sensor is installed on the tier branch pipeline between the pressurized water tank and the tier water end, and the solenoid valve is installed on the tier branch pipeline between the pressurized water tank and the main pipeline.

[0013] In some embodiments, a first valve is further installed between the solenoid valve and the main line.

[0014] In some embodiments, a second valve is installed in the communication pipe.

[0015] In some embodiments, the automatic controller further comprises: When the difference between the data of the pressure sensors within the coordinated water supply level range of the A level and the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, the automatic controller sends an activation signal to the pressurizing device and an opening signal to each solenoid valve, so that the water supply end of the A level is configured to be supplied with water from the pressurizing device and the water storage device.

[0016] In some embodiments, the automatic controller is further configured to, when the pressurizing device replenishes water in the pressurized water tanks of each level until the data from the pressure sensors of each level reach a third preset threshold, send a stop signal to the pressurizing device and send a close signal to each solenoid valve.

[0017] In some embodiments, the coordinated water supply level range for level A includes all levels from level A-1 to level A+4.

[0018] The above-described embodiments of the present invention have at least the following beneficial effects.

[0019] In an embodiment of the present invention, due to the cooperative operation characteristics of the distributed pressurized water storage devices of the system, only when the water supply pressure of multiple pressurized water storage devices is at a relatively low level and the system water demand is large, the pressurized water storage device directly supplies water to users and simultaneously replenishes water to the pressurized water storage device. In this case, the water pump needs to meet the high water demand, and must operate in a highly efficient state. This invention allows the pressurized water storage device to switch between two states, standby energy saving and efficient operation, as much as possible, while avoiding frequent start-up and shutdown. This improves the overall operating efficiency of the pressurized water storage device. [Brief explanation of the drawings]

[0020] In order to more clearly explain the technical solutions of the embodiments of this specification or the prior art, the following briefly introduces the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some of the embodiments described in the embodiments of this specification, and those skilled in the art can obtain other drawings based on these drawings. [Figure 1] FIG. 1 is a diagram illustrating the configuration of a secondary water supply pipeline according to the prior art. [Figure 2] FIG. 1 is a schematic diagram of a distributed pressure-storage coordinated water supply system provided by an embodiment of the present invention. [Figure 3] 3 is a partially enlarged view of the water storage and pressure retention device in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. It is clear that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments of the present invention. It should be noted that the embodiments and features of the embodiments of the present disclosure can be combined, separated, exchanged, and / or rearranged with each other, as long as they do not conflict. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort are within the scope of protection of the present invention.

[0022] The terms used herein are not intended to be limiting but rather to describe specific examples. As used herein, the singular forms "a," "an," and "the," are intended to include the plural unless the context clearly indicates otherwise. Furthermore, when used herein, the terms "comprises" and / or "comprises" and variations thereof describe the presence of stated features, wholes, steps, operations, parts, components, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, parts, components, and / or combinations thereof. Note that, as used herein, the terms "essentially," "about," and other similar terms are used as terms of approximation rather than degree, and as such, are used to account for inherent variations in measurements, calculations, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0023] The present disclosure will be described below with some specific embodiments. In order to keep the following description of the embodiments of the present invention clear and concise, the present invention will omit detailed descriptions of well-known functions and components. Referring to FIG. 2, the embodiment of the present invention provides a distributed pressure-storage coordinated water supply system, which includes a water storage device 10, a pressurizing device 20, several water storage and pressure-storage devices 30, and a transport pipeline network 40. The water storage device 10 is connected to a pressurizing device via a transport pipe network 40, and the pressurizing device 20 is connected to the water supply end of each floor via the transport pipe network 40, Each of the water storage and pressure maintaining devices 30 is installed on at least some of the different floors, and the water storage and pressure maintaining devices 30 are connected to the pressurizing device 20 and the water supply end of each floor via a transport pipe network 40, The water storage and pressure maintaining device 30 includes a pressure maintaining water tank 31, a pressure sensor 32, and an electromagnetic valve 33. The electromagnetic valve 33 controls the opening and closing of the pipeline between the water supply end of the floor where the water storage tank 31 is located and the pressurizing device 20. The pressure sensor 32 is used to acquire the water pressure in the pipeline between the water supply end of the floor where the water storage tank 31 is located and the water supply end of the floor where the water storage tank 31 is located. The automatic controller 50 is further included, and the solenoid valve 33, the pressure sensor 32 and the pressurizing device 20 are all electrically connected to the automatic controller 50; The automatic controller 50 If the data of the pressure sensor of the A level shows a decreasing trend and the rate of decrease is lower than the first preset threshold, the level water terminal of the A level is identified as being in a state of operation of a single pipe with a small flow rate, and the automatic controller sends a closing signal to the solenoid valve of the A level, so that the level water terminal of the A level is supplied with water entirely from the pressure-retaining water tank of the A level. In other words, if the data of the branch pipe pressure sensor of the A level fluctuates and shows a tendency to decrease slowly, the automatic controller identifies the level water terminal of the A level as being in a state of operation of a single branch pipe with a small flow rate, and at this time sends a closing command to the solenoid valve A of the distributed water storage and pressure-retaining device 30 of the branch pipe of the A level, so that the required amount of water is completely supplied from the A pressure tank.

[0024] If the difference between the data from the pressure sensor on the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, it is identified that a demand for large-flow water use is occurring at the water supply end of the A level, and the automatic controller sends an open signal to both the A level and the solenoid valves within the coordinated water supply level range of the A level, so that the water supply end of the A level is supplied with water from the A level and the pressurized water tank within the coordinated water supply level range of the A level.

[0025] In some embodiments, the coordinated water supply level range for level A includes all levels from level A-1 to level A+4.

[0026] Specifically, when the distributed water storage and pressure retention device 30 of the A branch pipe approaches empty, the data from the A branch pipe pressure sensor gradually approaches P0 (i.e., the initial pressure of the pressure retention water tank), and it can be identified that a long-term or large-flow water demand is occurring in the A branch pipe. The automatic controller sends an open signal to the branch pipe solenoid valves of levels A-1, A+1, A+2, A+3, etc., and the pressure retention water tanks of the adjacent branch pipes begin to supply water to the A branch pipe in a coordinated manner, ensuring that the pressure at the A branch pipe water point is normal during coordinated water supply based on the pressure of the pressure retention water tank itself and the elevation difference of levels A and above.

[0027] In this embodiment of the present invention, each branch pipe solenoid valve 33 is closed by default, and when water is used in each branch pipe, water is supplied preferentially from the distributed pressure-maintained water tank 31 of the corresponding branch pipe. When the pressure in the water tank drops to a certain value (for example, when it approaches the initial pressure), the solenoid valve 33 opens and water is supplied from the main pipe of the water supply system to replenish the pressure-maintained water tank 31. This reduces the frequent start-up and stop of the water pump due to the occurrence of small water flow rates in the system, and reduces pressure fluctuations on the user side.

[0028] The water storage device 10 includes, for example, a water storage tank, a domestic water tank, a tap water source, etc. The pressure applying device 20 includes, for example, a water pump or a water pump unit, etc. In this specification, the pressure applying device may also be described as a water pump.

[0029] In some embodiments, the initial pressure of the pressure-retaining water tank 31 is P0, the minimum operating pressure required at the level water end connected to the pressure-retaining water tank 31 is P1, and the pipeline pressure loss at the level water end connected to the pressure-retaining water tank 31 is P2, where P0 > P1 + P2. It should be understood that the initial pressure of the pressure-retaining water tank 31 is the pressure when the pressure-retaining water tank 31 is not filled with water, and is contrasted with the full-water pressure. In this embodiment, in order to meet the normal operating pressure of the device at the level water end of the subsequent pipeline, the pressure P0 of the pressure-retaining water tank 31 in its initial state (when not filled with water) is slightly higher than the sum of the minimum operating pressure P1 required for the subsequent pipeline use point and the subsequent pipeline head loss P2.

[0030] Therefore, when the water pump supplies water to the tier water end, priority is given to supplying water to the tier water end due to the relationship between P0 and P1, and if there is excess water supply or if the tier water end stops supplying water, the water is replenished in the pressure-retaining water tank 31.

[0031] In some embodiments, the pressurized water tank 31 includes an airbag, a pneumatic tank, and a connecting pipe, the airbag being located in the pneumatic tank, and the pressurized water tank 31 being connected to the hierarchical branch pipeline via the connecting pipe 42. The pneumatic tank is the device body, the airbag is located in the pneumatic tank, and the connecting pipe is a passage through which the water enters and exits the distributed pressurized water tank.

[0032] In some embodiments, the transportation pipeline network 40 includes a main pipeline 41 and level branch pipelines 42 installed at each level, The water storage device 10 is connected to one end of the pressure device 20, and the other end of the pressure device 20 is connected to one end of each of the tier branch pipelines 42 via the main pipeline 41, and the other ends of the tier branch pipelines 42 are connected to the tier water terminal. In some embodiments, the pressurized water tank 31 is connected to the tier branch pipeline 42, the pressure sensor 32 is installed on the tier branch pipeline 42 between the pressurized water tank 31 and the tier water end, and the solenoid valve 33 is installed on the tier branch pipeline 42 between the pressurized water tank 31 and the main pipeline 41.

[0033] In some embodiments, a first valve 60 is further installed between the solenoid valve 33 and the main line 41 .

[0034] In some embodiments, a second valve 70 is installed in the communication line.

[0035] The first valve 60 and the second valve 70 may be manual valves or motorized valves that serve as check valves for users or water personnel on each level.

[0036] In some embodiments, the automatic controller further comprises: When the difference between the data of the pressure sensors within the coordinated water supply level range of the A level and the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, the automatic controller 50 sends an activation signal to the pressurizing device 20 and an open signal to each solenoid valve, so that the water supply end of the A level is configured to be supplied with water from the pressurizing device 20 and the water storage device 10.

[0037] In some embodiments, the automatic controller 50 is further configured to send a stop signal to the pressurizing device and a close signal to each solenoid valve when the pressurizing device replenishes water to the pressurized water tanks of each level until the data from the pressure sensors of each level reach a third preset threshold.

[0038] The third preset threshold may be the full water pressure of the pressure holding water tank 31.

[0039] Specifically, when the pressure of each branch pipe within the branch pipe coordinated water supply hierarchical range of the A hierarchical level drops to near P0, the system will no longer be able to meet the water demand of the A branch pipe through coordinated water supply, and the automatic controller 50 will send a start signal to the water pump, which will supply water to the branch pipe via the water pump and main pipe to meet the water demand of the A branch pipe, and will open the solenoid valves of the other branch pipes to replenish water in the distributed discharge pressure tanks where the water level is insufficient.

[0040] When the rear pressure of each branch pipe pressure tank reaches full water pressure, the automatic controller 50 sends a stop signal to the pump. In this case, if the water supply from branch pipe A continues, the solenoid valves remain open within the range of A and A's coordinated water supply levels, continuing coordinated water supply and shortening the operating time of the water pump. When the water supply from branch pipe A stops, after all distributed pressure-retaining water tanks reach full water pressure, the automatic controller 50 controls the solenoid valves of each branch pipe to close, and the distributed pressure-retaining water storage and supply system returns to standby state.

[0041] In some embodiments, when multiple branch pipes generate water, if all of them have a small flow rate, the method of supplying water from a single branch pipe distributed pressure-retaining tank can be carried out, that is, the solenoid valves of each branch pipe are kept closed, and the water is supplied independently from the corresponding branch pipe distributed pressure-retaining tank.

[0042] If the distance between each branch pipe floor where water is generated is far, for example, the fifth floor or above, when the corresponding branch pipe pressure tank approaches empty, the automatic controller 50 sends an open signal to the branch pipe solenoid valve within the coordination range of each branch pipe, and water is supplied to the water branch pipe from each relatively independent coordinated water supply floor range.

[0043] When multiple branch pipes from which water is generated are close to each other, the local pressure in the pipelines may drop quickly, resulting in insufficient pressure and affecting the normal water supply of each branch pipe. To avoid this, the automatic controller 50 sends an open signal to the branch pipe solenoid valves in the coordination range to start the coordinated water supply, and also sends a start signal to the water pump when the pressure in the coordinated branch pipe drops to the middle value, ensuring the water supply branch pipes through the water pump + main pipe + coordinated water supply, reducing the number of starts and stops and the operating time of the water pump on the premise of ensuring the water supply experience. The middle position can be adjusted according to the actual situation, for example, to half the full water pressure.

[0044] In some embodiments, the replenishment of the distributed pressure-maintaining water tank 31 must be completed by opening the water pump. If there is water in the branch pipe, the normal use of the water branch pipe must be ensured first. The automatic controller 50 will, based on the rated flow rate and pressure of the water pump and the branch pipe position where the water is generated, preferentially open the solenoid valves at higher levels above the water branch pipe within the range of the rated flow rate of the water pump, and then gradually open the solenoid valves at lower levels to gradually complete the replenishment of the distributed pressure-maintaining water tank.

[0045] After the automatic controller sends a start signal to the water pump, it opens the solenoid valves 33 of the branch pipes on higher levels first based on the rated flow rate of the water pump to supply water to the pressure-maintaining water tanks 31 distributed on the higher levels, and then gradually opens the solenoid valves 33 on lower levels. When the water pump supplies water to the pressure-maintaining water tanks 31 on higher levels, it opens relatively fewer solenoid valves 33, and when supplying water to lower levels, it opens more and more solenoid valves 33 as the levels decrease, making full use of the water pump's performance to maintain efficient operation and shortening the water pump's operating time.

[0046] The system provided by the present invention utilizes water storage and pressure retention devices distributed on each water supply level to overcome the inherent drawback of the spatial location of the pressure stabilization tank installed in the water pump room, i.e., the actual effective volume of the pressure stabilization tank in the water pump room varies depending on the change in the use point, and as the level rises, the effective volume of the pressure stabilization tank decreases, weakening its pressure stabilization water supply effect.

[0047] When a user on a certain floor needs water, water is first supplied from the nearest distributed water storage and pressure device, and the pressure storage capacity of a single device can meet the user's needs such as multiple hand washing and urinary flushing, reducing the possibility of the water pump being activated frequently due to the relatively small amount of water in the system.

[0048] During the water supply process, as the pressure of its own internal mechanical structure decreases, the distributed water storage and pressure retention devices on adjacent floors gradually participate in the coordinated water supply from nearby to distant locations, thereby ensuring water supply volume and pressure guarantee for a certain point of use far exceeding that of a single device, further reducing the number of times the water pump unit needs to be started when a small amount of water is required and improving the overall energy efficiency level.

[0049] Compared to the conventional water supply system, the distributed pressure-storage coordinated water supply system of the present invention is bypass-connected via branch pipes on each floor, so that it does not directly affect the water supply of users after the water pump unit is started.

[0050] Due to the cooperative nature of the distributed water storage systems in this system, only when the variable volume water volume in the multiple water storage systems is relatively low and the system's water demand is large can the water pump units directly supply water to users and simultaneously replenish the distributed water storage systems. Under this operating condition, the water pump units' effective utilization rate can reach its designed operating condition (according to GB50015-2019, "Design Standard for Building Water Supply," the pump units' water supply capacity should meet the maximum designed second flow rate of the domestic water supply system. When designing a building's domestic water supply piping system, the water supply volume of the sanitary fixtures, the number of users, and the maximum instantaneous water supply flow rate during peak water demand hours set by the water usage regulations should be the design flow rate for that section), thereby achieving better operating energy efficiency when starting the water pumps.

[0051] Overall, to reduce the energy consumption level of the water pump unit and improve its energy efficiency, it is necessary to reduce the operating time in the low-efficiency section and convert more of the low-efficiency water operation state into the high-efficiency section of the water pump, so that the unit can switch between the two states of standby energy saving and high-efficiency operation as much as possible, while at the same time avoiding frequent start-up and shutdown. Also, it is necessary to rationally smooth out the peaks and valleys of the water consumption curve.

[0052] The distributed water storage and pressure control device provides a theoretical possibility for flattening the peaks and valleys by increasing the variable volume of the pipe network under hardware conditions. By innovatively installing this device at each water supply level, it can maximize the effectiveness of the variable volume, further adjust the operating conditions of the entire system, and provide an effective guarantee for reducing the energy consumption of the water supply unit.

[0053] Those skilled in the art will further recognize that the units and algorithm steps of each example described in the embodiments disclosed herein can be realized in electronic hardware, computer software, or a combination of both, to clearly describe the compatibility of hardware and software, and that the above description generally describes the configurations and steps of each example according to their functions. Whether these functions are implemented in hardware or software is determined by the specific application and design constraints of the technical solution. Those skilled in the art may realize the described functions using different methods for each specific application, but such realization should not be considered beyond the scope of the present disclosure.

[0054] The steps of a method or algorithm described in the embodiments disclosed herein may be embodied in hardware, in software modules executed by a processor, or in a combination of both. The software modules may be located in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0055] The specific embodiments described above further explain the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and do not limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. The system includes a water storage device (10), a pressurizing device (20), a plurality of water storage and pressure holding devices (30), and a transport pipe network (40), The water storage device (10) is connected to a pressurizing device via a transport pipe network (40), and the pressurizing device (20) is connected to the water terminals of each level via the transport pipe network (40), Each of the water storage and pressure retention devices (30) is installed on at least some of the different floors, and the water storage and pressure retention devices (30) are connected to the pressurizing device (20) and the floor water end via a transport pipe network (40), The water storage and pressure retention device (30) includes a pressure retention water tank (31), a pressure sensor (32), and an electromagnetic valve (33), the electromagnetic valve (33) controls the opening and closing of the pipeline between the water supply end of the floor where the water storage tank (31) is located and the pressurizing device (20), and the pressure sensor (32) is used to acquire the water pressure in the pipeline between the water supply end of the floor where the water storage tank (31) is located and the water supply end of the floor where the water storage tank (31) is located. The system further includes an automatic controller (50), and the solenoid valve (33), the pressure sensor (32), and the pressurizing device (20) are all electrically connected to the automatic controller (50); The automatic controller (50) If the data of the pressure sensor of the A floor is in a downward trend and the downward speed is lower than the first preset threshold, the floor water supply terminal of the A floor is identified as being in a single-pipe low-flow water supply operation state, and the automatic controller sends a closing signal to the solenoid valve of the A floor, so that the floor water supply terminal of the A floor is completely supplied with water from the pressure-retaining water tank of the A floor; If the difference between the data of the pressure sensor of the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, it is identified that a demand for large-flow water use is occurring at the water supply end of the A level, and the automatic controller sends an open signal to both the A level and the solenoid valves within the coordinated water supply level range of the A level, so that the water supply end of the A level is supplied with water from the A level and the pressurized water tank within the coordinated water supply level range of the A level; The pressurized water tank (31) includes an air bag, a pneumatic tank, and a connecting pipe, the air bag is located in the pneumatic tank, and the pressurized water tank (31) is connected to the hierarchical branch pipe (42) via the connecting pipe, The transport pipeline network (40) includes a main pipeline (41) and tiered branch pipelines (42) installed at each tier, The water storage device (10) is connected to one end of the pressurizing device (20), the other end of the pressurizing device (20) is connected to one end of each of the tier branch pipelines (42) via the main pipeline (41), and the other end of each of the tier branch pipelines (42) is connected to a tier water terminal; The pressure-retaining water tank (31) is connected to the tiered branch pipeline (42), the pressure sensor (32) is installed on the tiered branch pipeline (42) between the pressure-retaining water tank (31) and the tiered water end, and the solenoid valve (33) is installed on the tiered branch pipeline (42) between the pressure-retaining water tank (31) and the main pipeline (41). A distributed pressure-retaining water storage coordinated water supply system.

2. The initial pressure of the pressure-retaining water tank (31) is P0, the minimum operating pressure required at the level water end connected to the pressure-retaining water tank (31) is P1, and the pipeline pressure loss at the level water end connected to the pressure-retaining water tank (31) is P2, where P0 > P1 + P2.

2. The distributed pressure-storage cooperative water supply system according to claim 1.

3. A first valve (60) is further installed between the solenoid valve (33) and the main line (41).

2. The distributed pressure-storage cooperative water supply system according to claim 1.

4. The communication pipe is provided with a second valve (70).

2. The distributed pressure-storage cooperative water supply system according to claim 1.

5. The automatic controller further comprises: When the difference between the data of the pressure sensors in the coordinated water supply range of the A level and the A level and the initial pressure of the pressurized water tank is lower than the second preset threshold, the automatic controller sends a start signal to the pressurizing device (20) and sends an open signal to each solenoid valve, so that the water supply end of the A level is configured to be supplied with water from the pressurizing device (20) and the water storage device (10); 2. The distributed pressure-storage cooperative water supply system according to claim 1.

6. The automatic controller is further configured to send a stop signal to the pressurizing device (20) and a close signal to each solenoid valve when the pressurized water tanks of each level are replenished with water by the pressurizing device (20) until the data of the pressure sensors of each level reach a third preset threshold. The distributed pressure-storage cooperative water supply system according to claim 5.

7. The coordinated water supply level range of the A level includes all levels from the A-1 floor to the A+4 floor, 2. The distributed pressure-storage cooperative water supply system according to claim 1.

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