Distributed pressure-maintaining water storage coordinated water supply system

Abstract

The present invention relates to a distributed pressure-maintaining water storage coordinated water supply system, belonging to the technical field of secondary water use in buildings, and solves the problem in the prior art water supply system that it is necessary to repeatedly start and stop the water pump, resulting in low water supply efficiency. 【Solution means】It includes a water storage device, a pressurizing device, a plurality of water storage and pressure-maintaining devices, and a transportation pipe network. The water storage device is connected to the pressurizing device through the transportation pipe network, and the pressurizing device is respectively connected to the water use ends of each floor through the transportation pipe network. Each water storage and pressure-maintaining device is installed on at least some different floors respectively. 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 use end of the floor where it is located and the pipeline between the pressure-maintaining water tank and the pressurizing device. The pressure sensor is used to obtain the pipeline water pressure from the pressure-maintaining water tank to the water use 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.

Description

Technical Field

[0001] The present invention belongs to the technical field of secondary water supply for buildings, and specifically relates to a distributed pressure-maintaining water storage coordinated water supply system.

Background Art

[0002] As shown in FIG. 1, a conventional secondary water supply system for buildings mainly consists of a storage facility 1 (water storage tank), a pressurization facility (water pump 2, pressure-stabilizing pneumatic tank 3), and a transportation pipe network 4. After the municipal tap water enters the domestic water storage tank of the building, it is pressurized by the water pump 2 and sent to users through the water supply pipe network 4 of the building. In theory, the effective volume of the pressure-stabilizing 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 position and the mechanical process in which the air bag expands and operates. In actual use, the effective volume of the pressure-stabilizing tank 3 changes according to the change of the use point.

[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-stabilizing tank is 100 L, and the initial (not filled) pressure is 45 m.

[0004] Since it is impossible for the pressure of the pressure stabilizing tank 3 to be greater than the discharge pressure of the water pump, in an ideal state, the pressure of this pressure stabilizing tank 3 is 90 m, the stored water is 100 L, and in the case of a typical pneumatic tank, the total volume is usually three times the effective volume. The total volume of this pneumatic tank is 300 L. That is, every time 1 L of water is supplied from the pressure stabilizing tank 3, the gas in the airbag needs to expand by a volume of 3 L. Using a simple approximate calculation and assuming that the gas temperature in the airbag is constant, based on the ideal gas law PV = nRT, the pressure drop rate in the pressure stabilizing tank 3 is much greater than its water supply rate. That is, the effective volume for high-rise users is much smaller than that for low-rise users. As a result, in the actual use process, the so-called effective volume of the pressure stabilizing tank 3 fails. When using water on the high-rise, the pressure of the pipe network drops sharply, the supply of the pressure stabilizing tank 3 is insufficient, and when the start-up condition of the water pump 2 is reached, the water pump starts.

[0005] At this time, it can be divided into the following two cases: (1) In the case of continuous small-flow water use, after the water pump 2 starts, while meeting the water use demand of the user, it replenishes water to the pressure stabilizing tank 3, and stops the pump when the water is replenished to reach the specified pressure. The user side switches to supplying water from the pressure stabilizing tank 3. However, due to the small effective volume of the corresponding floor, the pressure of the pipe network immediately drops until it meets the start-up condition of the water pump 2. By repeating this way, the water pump 2 starts and stops frequently, the operating state deviates from the high-efficiency section, and the energy efficiency level of the water supply unit decreases.

[0006] (2) When water is used simultaneously at multiple usage points and the flow rate is large, the pressure stabilizing tank 3 cannot meet the simultaneous water usage demands of multiple users, and its internal effective volume is rapidly consumed (it needs to be comprehensively calculated based on the usage points and flow rate). Subsequently, since the pressure stabilizing tank 3 is closer to the water pump 2 than the usage points, the hydraulic loss from the water outlet of the water pump 2 to the pressure stabilizing tank 3 is smaller, and the water discharge volume of the water pump 2 is preferentially replenished to the pressure stabilizing tank 3, further affecting the water supply to users by the water pump 2. The water replenishment process of the pressure stabilizing tank 3 is non-linear, that is, as the internal water volume increases, the pressure of the airbag continues to rise. As a result, the load of the water pump 2 continuously changes, further intensifying the pressure fluctuations in the pipe network.

[0007] Generally speaking, the pressure stabilizing tank installed in the water pump room has an adjusting effect, but it is restricted by the randomness of the usage points, its effective volume is very limited, and at the same time, in many cases, its existence also causes pressure fluctuations, affects the water usage experience, deviates the operating state of the water pump from the high-efficiency section, and reduces the energy efficiency.

Summary of the Invention

Problems to be Solved by the Invention

[0008] In view of the above analysis, the embodiments of the present invention aim to solve the problem that in the prior art water supply system, it is necessary to repeatedly start and stop the water pump, and the water supply efficiency is low.

Means for Solving the Problems

[0009] The present invention provides a distributed pressure-maintaining water storage collaborative water supply system, including a water storage device, a pressurizing device, a plurality of water storage and pressure-maintaining devices, and a transportation pipe network. The water storage device is connected to the pressurizing device via the transportation pipe network, and the pressurizing device is respectively connected to each floor water usage end via the transportation pipe network. Each of the water storage and pressure maintaining devices is installed in at least some different floors respectively, and the water storage and pressure maintaining devices are respectively connected to the pressurizing device and the floor water use end through a transportation pipeline 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 floor water use end of the floor where it is located and the pressure maintaining water tank and the pressurizing device. The pressure sensor is used to obtain the pipeline water pressure from the pressure maintaining water tank to the floor water use 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. The automatic controller is When the data of the pressure sensor on the A floor shows a downward trend and the downward speed is lower than the first preset threshold, it is identified that the floor water use end of the A floor is in the operating state of small-flow water use in a single pipeline. The automatic controller sends a closing signal to the solenoid valve on the A floor. As a result, the floor water use end of the A floor is completely supplied with water from the pressure maintaining water tank on the A floor. When the difference between the data of the pressure sensor on the A floor and the initial pressure of the pressure maintaining water tank is lower than the second preset threshold, it is identified that there is a demand for large-flow water use at the floor water use end of the A floor. The automatic controller sends an opening signal to all the solenoid valves within the A floor and the coordinated water supply floor range of the A floor. As a result, the floor water use end of the A floor is configured to be supplied with water from the pressure maintaining water tanks within the A floor and the coordinated water supply floor range of the A floor.

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

[0011] In some embodiments, the pressure maintaining water tank includes an airbag, a pneumatic tank, and a communication pipe. The airbag is located within the pneumatic tank, and the pressure maintaining water tank communicates with the floor branch pipeline through the communication pipe. In some embodiments, the transportation pipeline network includes a main pipeline and floor branch pipelines respectively installed on each floor. The water storage device is connected to one end of the pressurizing device, the other end of the pressurizing device is respectively connected to one end of each of the hierarchical branch pipelines through the main pipeline, and the other end of the hierarchical branch pipeline is connected to the hierarchical water use end.

[0012] In some embodiments, the pressure maintaining water tank communicates with the hierarchical branch pipeline, the pressure sensor is installed between the pressure maintaining water tank and the hierarchical water use end on the hierarchical branch pipeline, and the electromagnetic valve is installed between the pressure maintaining water tank and the main pipeline on the hierarchical branch pipeline.

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

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

[0015] In some embodiments, the automatic controller further When the differences between the data of the pressure sensors within the coordinated water supply hierarchical range of the A floor and the initial pressure of the pressure maintaining water tank are all lower than the second preset threshold, the automatic controller sends a start signal to the pressurizing device and an open signal to each electromagnetic valve. As a result, the hierarchical water use end of the A floor is configured to be supplied with water from the pressurizing device and the water storage device.

[0016] In some embodiments, the automatic controller further configures that when the water in each hierarchical pressure maintaining water tank is replenished by the pressurizing device until the data of the pressure sensors of each floor all reach the third preset threshold, the automatic controller sends a stop signal to the pressurizing device and a closing signal to each electromagnetic valve.

[0017] In some embodiments, the coordinated water supply hierarchical range of the A floor includes all floors from the A - 1 floor to the A + 4 floor.

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

[0019] According to the characteristics of the cooperative operation of the distributed pressure-maintaining water storage device of the present system in the embodiments of the present invention, only when the water supply pressures of a large number of pressure-maintaining water tank devices are at a relatively low level and the system water consumption is large, the pressurizing device directly supplies water to users and simultaneously replenishes water to the water storage and pressure-maintaining device. In this case, the water pump needs to meet the large-flow water demand, and the water pump needs to operate in a high-efficiency state. According to the present invention, the pressurizing device can achieve the switching between the two states of standby energy saving and efficient operation as much as possible, and at the same time avoid frequent startup and shutdown. Thereby, the overall efficiency of the operation of the pressurizing device is improved.

Brief Description of the Drawings

[0020] To more clearly illustrate the embodiments or technical solutions of the prior art in this specification, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the embodiments of this specification, and those skilled in the art can obtain other drawings based on these drawings.

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 obvious that the described embodiments are only some, not all, of the embodiments of the present invention. It should be noted that the embodiments and features of the present disclosure can be combined, separated, exchanged, and / or rearranged with each other as long as they do not conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention.

[0022] The terms used in this specification are not intended to be limiting, but rather to describe specific embodiments. As used in this specification, unless explicitly indicated in the context, the singular forms "a", "an", and "the" are intended to include the plural forms. Further, when the terms "comprising" and / or "include" and their variations are used in this specification, they describe the presence of the stated features, wholes, steps, operations, parts, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, parts, components, and / or combinations thereof. Note that as used in this specification, the terms "substantially", "about", and other similar terms are used as approximate terms rather than degree terms, and thus they are used to account for the inherent deviations of measured values, calculated values, and / or provided values that would be recognized by those skilled in the art.

[0023] Hereinafter, the present disclosure will be described with some specific embodiments. To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components in the present invention are omitted. Referring to FIG. 2, an embodiment of the present invention provides a distributed pressure-maintaining water storage cooperative water supply system including a water storage device 10, a pressurizing device 20, several water storage and pressure-maintaining devices 30, and a water transportation pipeline network 40. The water storage device 10 is connected to the pressurizing device via the water transportation pipeline network 40, and the pressurizing device 20 is respectively connected to the water usage ends of each floor via the water transportation pipeline network 40. Each of the water storage and pressure-maintaining devices 30 is installed in at least some different floors respectively, and the water storage and pressure-maintaining device 30 is respectively connected to the pressurizing device 20 and the water usage end of the floor via the water transportation pipeline network 40. The water storage and pressure-maintaining device 30 includes a pressure-maintaining water tank 31, a pressure sensor 32, and a solenoid valve 33. The solenoid valve 33 controls the opening and closing of the pipeline between the water usage end of the floor where it is located, the pressure-maintaining water tank 31, and the pressurizing device 20. The pressure sensor 32 is used to obtain the pipeline water pressure from the pressure-maintaining water tank 31 to the water usage end of the floor where it is located. further comprising an automatic controller 50, wherein 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, When the data of the pressure sensor on the A floor shows a downward trend and the rate of decrease is lower than the first preset threshold, it is identified that the water supply end of the A floor is in the operating state of small-flow water use in a single pipeline, and the automatic controller sends a closing signal to the solenoid valve on the A floor. As a result, the water supply end of the A floor is completely supplied with water from the pressure maintaining water tank on the A floor. In other words, when the data of the branch pipe pressure sensor on the A floor fluctuates and shows a gentle downward trend, the automatic controller identifies that it is the operating situation of small-flow water use in a single branch pipe. At this time, the automatic controller sends a closing command to the solenoid valve A of the distributed water storage and pressure maintaining device 30 of the branch pipe on the A floor, and is configured to completely supply the required amount of water from the A pressure tank.

[0024] When the difference between the data of the pressure sensor on the A floor and the initial pressure of the pressure maintaining water tank is lower than the second preset threshold, it is identified that there is a demand for large-flow water use at the water supply end of the A floor. The automatic controller sends an open signal to all the solenoid valves within the A floor and the coordinated water supply floor range of the A floor. As a result, the water supply end of the A floor is supplied with water from the pressure maintaining water tanks within the A floor and the coordinated water supply floor range of the A floor.

[0025] In some embodiments, the coordinated water supply floor range of the A floor includes all floors from the A - 1 floor to the A + 4 floor.

[0026] Specifically, when the distributed water storage and pressure maintaining device 30 of the A branch pipe approaches empty, the data of the A branch pipe pressure sensor gradually approaches P0 (i.e., the initial pressure of the pressure maintaining water tank), and it can be identified that there is a demand for long-term or large-flow water use in the A branch pipe. The automatic controller sends an open signal to the branch pipe solenoid valves of floors such as A - 1, A + 1, A + 2, A + 3, etc., and starts to supply water to the A branch pipe in coordination from the pressure maintaining water tanks of the adjacent branch pipes. Due to the pressure of the pressure maintaining water tank itself and the height difference of floors above A, it can be ensured that the pressure at the water use location of the A branch pipe is normal during coordinated water supply.

[0027] In an embodiment of the present invention, each branch pipe solenoid valve 33 is in a closed state by default. When water is used in each branch pipe, it is ensured that water is preferentially supplied from the distributed pressure-maintaining water tank 31 of the corresponding branch pipe. When the pressure of the water tank drops to a certain value (for example, when approaching the initial pressure), the solenoid valve 33 is opened to supply water from the main pipe of the water supply system to replenish the pressure-maintaining water tank 31 with water. Thereby, the frequent start-up and stop of the water pump due to the generation of small-flow water use in the system can be reduced, and the pressure fluctuation on the user side can be reduced.

[0028] The water storage device 10 includes, for example, a water storage tank, a domestic water tank, a water source of tap water, etc. The pressurizing device 20 includes, for example, a water pump or a water pump unit, etc. In this specification, it can also be described using a water pump instead of the pressurizing device.

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

[0030] Therefore, when the water pump supplies water to the hierarchical water use end, due to the relationship between P0 and P1, water is preferentially supplied to the hierarchical water use end, and when the water supply volume is surplus or the hierarchical water use end stops using water, the pressure-maintaining water tank 31 is replenished.

[0031] In some embodiments, the pressure - maintaining water tank 31 includes an airbag, a pneumatic tank, and a communication pipe. The airbag is located within the pneumatic tank, and the pressure - maintaining water tank 31 communicates with the hierarchical branch pipeline via the communication pipe 42. The pneumatic tank is the device body, the airbag is located within the pneumatic tank, and the communication pipe is a passage through which water bodies enter and exit the distributed - type pressure - maintaining water tank.

[0032] In some embodiments, the transportation pipe network 40 includes a main pipeline 41 and hierarchical branch pipelines 42 respectively installed on each floor. The water storage device 10 is connected to one end of the pressurizing device 20, and the other end of the pressurizing device 20 is respectively connected to one end of each of the hierarchical branch pipelines 42 via the main pipeline 41. The other end of the hierarchical branch pipeline 42 is connected to the water - using end of the floor. In some embodiments, the pressure - maintaining water tank 31 communicates with the hierarchical branch pipeline 42. The pressure sensor 32 is installed between the pressure - maintaining water tank 31 and the water - using end of the floor on the hierarchical branch pipeline 42, and the solenoid valve 33 is installed between the pressure - maintaining water tank 31 and the main pipeline 41 on the hierarchical branch pipeline 42.

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

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

[0035] The first valve 60 and the second valve 70 can adopt manual valves or electric valves as inspection valves for users or water - related personnel on each floor.

[0036] In some embodiments, the automatic controller further When the difference between the data of the pressure sensors within the A layer and the coordinated water supply layer range of the A layer and the initial pressure of the pressure maintaining water tank is lower than the second preset threshold in all cases, the automatic controller 50 transmits a start signal to the pressurizing device 20 and transmits an open signal to each solenoid valve. As a result, the water supply end of the A layer is configured to be supplied with water from the pressurizing device 20 and the water storage device 10.

[0037] In some embodiments, when the automatic controller 50 further replenishes water to the pressure maintaining water tank of each layer by the pressurizing device until the data of the pressure sensors of each layer reach the third preset threshold, the automatic controller 50 is configured to transmit a stop signal to the pressurizing device and transmit a closing signal to each solenoid valve.

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

[0039] Specifically, when the pressure of each branch pipe within the coordinated water supply layer range of the branch pipe of the A layer drops to near P0 in all cases, in this state, the system can no longer meet the water demand of the A branch pipe by coordinated water supply. The automatic controller 50 transmits a start signal to the water pump and supplies water to the branch pipe through the water pump + main pipe, meets the water demand of the A branch pipe, opens the solenoid valves of each other branch pipe, and replenishes water to the distributed discharge pressure tank with insufficient water level.

[0040] When the back pressure of each branch pipe pressure tank reaches the full water pressure, a stop signal is transmitted from the automatic controller 50 to the pump. In this case, when the water use of the A branch pipe continues, the solenoid valve is maintained open within the range of the A layer and the coordinated water supply layer of the A layer, and the coordinated water supply continues to shorten the operation time of the water pump. When the water use of the A branch pipe stops, after all the distributed pressure maintaining water tanks reach the full water pressure, the automatic controller 50 controls to close the solenoid valves of each branch pipe and returns to the standby state of the distributed pressure maintaining water storage and water supply system.

[0041] In some embodiments, when multiple branch pipe water usages occur and all are low-flow water usages, the method of single branch pipe distributed pressure-maintaining water tank water supply is referred to for execution, that is, the closure of each branch pipe solenoid valve is maintained, and water is supplied independently from the distributed pressure-maintaining water tank of the corresponding branch pipe.

[0042] When the distance of each branch pipe layer where water usage occurs is far, for example, above the 5th floor, when the corresponding branch pipe pressure tank approaches empty, the automatic controller 50 sends an open signal to the branch pipe solenoid valves within the cooperation range of each branch pipe, and water is supplied to the water usage branch pipe from each relatively independent cooperation water supply layer range.

[0043] When the distances of multiple branch pipes where water usage occurs are close, a situation where the local pressure of the pipeline drops rapidly appears, and a pressure deficiency situation occurs. To avoid affecting the normal water usage of each branch pipe, the automatic controller 50 sends an open signal to the branch pipe solenoid valves within the cooperation range to activate the cooperative water supply. In addition, when the pressure of the cooperative branch pipe drops to the median value, a start signal is sent to the water pump, and the water pump + main pipeline + cooperative water supply is used to guarantee the water usage branch pipe. On the premise of guaranteeing the water usage experience, the start and stop times and the operation time of the water pump are reduced. The central position can be adjusted according to the actual situation. For example, it is half of the full water pressure.

[0044] In some embodiments, the water replenishment of the distributed pressure-maintaining water tank 31 needs to be completed by opening the water pump. When there is branch pipe water usage, first ensure the normal use of the water usage branch pipe. The automatic controller 50 preferentially opens the solenoid valves of higher floors above the water usage branch pipe within the range of the water pump rated flow rate based on the water pump rated flow rate, pressure, and the position of the branch pipe where water usage occurs, and then gradually opens the solenoid valves of lower floors to gradually complete the water replenishment of the distributed pressure-maintaining water tank.

[0045] After the controller sends a startup signal to the water pump, based on the rated flow rate of the water pump, the solenoid valve 33 of the high-level branch pipe is preferentially opened to supply water to the pressure-maintaining water tank 31 distributed on the high level, and then the low-level solenoid valve 33 is opened step by step. When the water pump supplies water to the high-level pressure-maintaining water tank 31, relatively few solenoid valves 33 are opened. When supplying water to the low level, as the level decreases, the number of opened solenoid valves 33 gradually increases, making full use of the water pump performance to maintain efficient operation and shortening the operation time of the water pump.

[0046] The system provided by the present invention utilizes the water storage and pressure-maintaining devices distributed in each water-using layer to overcome the inherent defect due to the spatial position of the pressure-stabilizing tank installed in the water pump room, that is, the actual effective volume of the pressure-stabilizing tank in the water pump room varies according to the change of the use point. As the level rises, the effective volume of the pressure-stabilizing tank decreases, and its pressure-stabilizing water supply effect weakens.

[0047] When users on a certain level use water, first, water is supplied from the distributed water storage and pressure-maintaining device closest in distance. The pressure-maintaining water storage capacity of a single device can meet the needs of multiple hand washes or urine flushing of users, etc., reducing the possibility that the water pump frequently starts due to a relatively small amount of water in the system.

[0048] During the water supply process, as the pressure of its internal mechanical structure decreases, the distributed water storage and pressure-maintaining devices on adjacent levels gradually participate in realizing coordinated water supply from near to far, so that the water supply volume and pressure guarantee for a certain use point far exceed that of a single device. Further reducing the startup frequency of the water pump unit due to small-flow water use and improving the overall energy efficiency level.

[0049] For the original water supply system, the distributed pressure-maintaining water storage and coordinated water supply system according to the present invention is bypass-connected through the branch pipes of each level, so it will not directly affect the water supply to users after the water pump unit starts.

[0050] Due to the characteristics of the coordinated operation of the distributed pressure-maintaining water storage device of this system, only when the variable volume water quantity in a large number of water storage and pressure-maintaining devices is at a relatively low level and the system water consumption is large, water is directly supplied from the water pump unit to the users, and at the same time, the distributed water storage and pressure-maintaining device is replenished with water. In this operating state, the energy utilization efficiency of the water pump unit can reach its designed operating state (according to the "Code for Design of Building Water Supply" GB50015-2019, the water supply capacity of the pump unit should meet the maximum designed second flow rate of the domestic water supply system. When designing the building domestic water supply piping system, the water supply quantity of its water supply sanitary appliances, the number of users, and the maximum instantaneous water supply flow rate during the peak water consumption time period of the water use rules shall be used as the design flow rate of the relevant pipe section), that is, when starting the water pump, it should be made to reach a better operating energy efficiency level.

[0051] Generally speaking, to reduce the energy consumption level of the water pump unit and improve the energy efficiency, it is necessary to reduce the operating time in the low-efficiency section and convert more low-efficiency water use operating states to the high-efficiency section of the water pump. In this way, the unit can achieve the switching between the two states of standby energy saving and high-efficiency operation as much as possible, and at the same time avoid frequent start-up and stop. Smooth out the peak and valley of the water use curve in a reasonable way.

[0052] The distributed water storage and pressure-maintaining device provides theoretical feasibility for smoothing the peak and valley by increasing the variable volume of the pipe network under hardware conditions, and innovatively installing this device at each water use level to maximize the effectiveness of the variable volume, further adjusting the operating state of the entire system, and providing a strong guarantee for reducing the energy consumption of the water supply unit.

[0053] Those skilled in the art can realize each example unit and algorithm step described in the embodiments disclosed in this specification in electronic hardware, computer software, or a combination of both in order to clearly explain the compatibility between hardware and software. It can be further recognized from the above description that the configurations and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software is determined by the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the functions described for each specific application, but such realizations should not be considered as exceeding the scope of this disclosure.

[0054] The steps of the methods or algorithms described in the embodiments disclosed in this specification can be implemented in hardware, software modules executed by a processor, or a combination of both. The software modules can be arranged in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium well-known in the technical field.

[0055] The specific embodiments described above further elaborate on the object, technical solution, and beneficial effects of the present invention. The above are only specific embodiments of the present invention and do not limit the protection scope of the present invention. It should be understood that any modifications, equivalent replacements, 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 retention devices (30), and a transport pipe network (40), The water storage device (10) is connected to a pressurizing device through a transport pipe network (40), and the pressurizing device (20) is connected to each level water end via the transport pipe network (40), Each of the water storage and pressure retention devices (30) is installed on at least some of 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 a solenoid valve (33), the solenoid valve (33) controls the opening and closing of the pipeline between the level water end of the level in question and the pressure retention water tank (31) and the pressurizing device (20), the pressure sensor (32) is used to acquire the pipeline water pressure between the pressure retention water tank (31) and the level water end of the level in question, The pressure sensor (32) and the pressure device (20) are electrically connected to the automatic controller (50). The automatic controller (50) When the data of the pressure sensor of the A level is on a downward trend and the rate of decline is lower than the first preset threshold, the A level water supply end is identified as being in a low-flow water operation state of a single pipeline, and the automatic controller sends a closing signal to the A level solenoid valve, so that the A level water supply end is completely supplied with water from the A level pressure water tank; When 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 a 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 airbag, a pneumatic tank, and a connecting pipe, the airbag is located in the pneumatic tank, and the pressurized water tank (31) is connected to a hierarchical branch pipe (42) via the connecting pipe, The transport pipeline network (40) includes a main pipeline (41) and hierarchical branch pipelines (42) installed in each level, 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 hierarchical branch pipelines (42) via the main pipeline (41), and the other ends of the hierarchical branch pipelines (42) are connected to a hierarchical water end; The pressure-retaining water tank (31) is connected to the hierarchical branch pipeline (42), the pressure sensor (32) is installed on the hierarchical branch pipeline (42) between the pressure-retaining water tank (31) and the hierarchical water end, and the solenoid valve (33) is installed on the hierarchical 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 tier water end connected to the pressure-retaining water tank (31) is P1, and the pipeline pressure loss at the tier water end connected to the pressure-retaining water tank (31) is P2, where P0>P1+P2.

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

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

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

5. The automatic controller further comprises: When the difference between the data of the pressure sensor in the coordinated water supply range of the A level and the initial pressure of the pressurized water tank in the A level 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 coordinated water supply system according to claim 1.

6. The automatic controller is further configured to, when the pressurizing device (20) replenishes water to the pressurized water tanks of each level until the data of 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.

6. The distributed pressure-storage coordinated 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 coordinated water supply system according to claim 1.

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