Urban water supply system and method thereof

Abstract

The invention discloses an urban water supply system and method, and belongs to the technical field of urban water supply. The system comprises a first segmentation module used for dividing an urban area into a plurality of first blocks, each first block is correspondingly provided with a water storage unit, the water storage units are connected with a main water pipeline, the main water pipeline is connected with a plurality of water supply main pipes, the water supply main pipes are connected with a plurality of water supply branch pipes, and the water supply branch pipes are connected with a user side; the control unit is used for receiving the water consumption data and forming a data set; the storage unit is used for forming the water consumption of all the user sides of each water supply main pipe in different time periods; the first valve is arranged at the joint of the main water pipeline and the water supply main pipe; when water is supplied, the water consumption in the corresponding time period is extracted, and the opening degree of the first valve is controlled, so that water entering the water supply main pipe reaches the extracted water consumption in the time period, and therefore, the water supply capacity can be improved in the water peak period, and the excessive water supply capacity can be prevented in the water valley period.

Description

Technical Field

[0001] The present invention relates to the technical field of urban water supply, and in particular to an urban water supply system and a method thereof. Background Art

[0002] The water supply process consists of a water transmission system and a water supply system. The water source water transmission pipeline layout mainly uses branch pipelines in series and parallel to transport groundwater at a depth of 300-350 meters to the high-level water pool of the water source using deep well pumps (the ground elevation of the high-level water pool of the water source is 1390m). The high-level water pool of the water source uses the terrain difference to transport the water to the urban water storage tank through a (DN700) water transmission pipeline. After being treated by the water treatment system, the urban drinking water automation scheduling system uses gravity flow and pressurization to reasonably transport the water in the reservoir to various parts of the city as needed. Since the water quality fully meets the domestic drinking water quality standards, only disinfection is carried out. However, with the development of urbanization, the demand for water in cities is getting higher and higher. At present, there is a general situation that the water supply capacity of the pipeline network is insufficient during peak water usage in some areas, while the water supply capacity is excessive during low water usage periods. Summary of the invention

[0003] In order to solve the problems in the prior art, the present invention provides a city water supply system and a method thereof.

[0004] In one aspect, a city water supply system is provided, the system comprising: A first segmentation module is used to divide the urban area into a plurality of first blocks, each of which is correspondingly provided with a water storage unit, the water storage unit is connected to a main water pipeline, a first booster pump is provided between the main water pipeline and the water storage unit, and the main water pipeline is connected to a plurality of water supply mains, the water supply mains are connected to a plurality of water supply branches, the water supply branches are connected to a user end, and the user end is provided with a smart water meter for obtaining water consumption data of the user end according to a set period; A control unit, used for receiving water consumption data and aggregating all user terminals of each water supply main into a data set; A storage unit, used to divide the data set into different time periods, form the water consumption of all user terminals of each water supply main in different time periods, and store the water consumption; A first valve is arranged at the connection between the main water pipeline and the water supply main; A first flow sensor is disposed in the water supply main and is used to monitor the water volume in the water supply main in real time; During water supply, the control unit extracts the water consumption in a corresponding time period and controls the opening of the first valve so that the water entering the water supply main reaches the extracted water consumption in the time period; The main water pipeline is composed of several main water branch pipes, and a pressure sensor and a second flow sensor are respectively arranged at the front and rear ends of each main water branch pipe, which are used to collect the pressure signal and flow signal at the front and rear ends of each main water branch pipe in real time. The control unit determines whether the main water branch pipe is leaking based on the collected pressure signal and flow signal.

[0005] Furthermore, the system further comprises: A second segmentation module is used to divide the water supply pipe on each of the main water pipes into a plurality of second blocks according to a number P as a group, each of the second blocks is correspondingly provided with a water replenishment unit, and the water replenishment unit is connected to the water supply pipe; The water replenishment unit is used to replenish water to the water supply main when the opening of the first valve reaches the maximum and the water consumption within the corresponding time period cannot be extracted by the control unit.

[0006] Furthermore, the first valve comprises: The first valve body has a first inlet, a second inlet and a first outlet on its side wall, the main water pipeline is connected to the first inlet, the water replenishment unit is connected to the second inlet, and the first outlet is connected to the water supply main; A first pushing device and a second pushing device are respectively connected to two ends of the first valve body; A first connecting rod and a second connecting rod are slidably connected to two ends of the first valve body, respectively, with one end located outside the first valve body and the other end located inside the first valve body; A first connecting plate and a second connecting plate are respectively connected to the ends of the first connecting rod and the second connecting rod outside the first valve body; the telescopic end of the first pushing device contacts the first connecting plate, and the telescopic end of the second pushing device contacts the second connecting plate; A first valve core and a second valve core are located in the first valve body and are respectively connected to ends of the first connecting rod and the second connecting rod located in the first valve body; a first shielding portion, connected to a side wall of the first valve core, in contact with an inner wall of the first valve body, and corresponding to a position of the first inlet; a second shielding portion connected to a side wall of the second valve core, in contact with an inner wall of the first valve body, and corresponding to a position of the second inlet; A first telescopic rod connected between the first valve core and the inner wall of the first valve body; A first spring, which is sleeved on the first telescopic rod, and whose two ends are respectively connected to the first valve core and the inner wall of the first valve body; a second telescopic rod connected between the second valve core and the inner wall of the first valve body; A second spring is sleeved on the second telescopic rod, and two ends of the second spring are respectively connected to the second valve core and the inner wall of the first valve body; During water supply, based on the water consumption in the corresponding time period extracted by the control unit, the control unit controls the advancement or retreat stroke of the first propulsion device to control the size of the first inlet through the first shielding portion to control the water intake; When replenishing water, the water consumption in the corresponding time period extracted by the control unit is subtracted from the water consumption that can be achieved within the period when the first inlet reaches the maximum opening, to form a differential water volume. Based on the differential water volume, the control unit controls the advancement or retreat stroke of the second propulsion device to control the size of the second inlet through the second blocking part to control the water replenishment amount.

[0007] Furthermore, the system further comprises: an emergency water delivery unit; and two adjacent main water branches are connected via a second valve; The second valve comprises: The second valve body has a third inlet, a second outlet and a third outlet on its side wall, the third inlet is connected to the water outlet end of the upstream main water branch of the two adjacent main water branches, the second outlet is connected to the water inlet end of the other downstream main water branch, the third outlet is connected to the water inlet of the emergency water transfer unit, and the water outlet of the emergency water transfer unit is connected to each of the main water branches; a third pushing device connected to an end of the second valve body; A third connecting rod is slidably connected to the end of the second valve body, with one end located outside the second valve body and the other end located inside the second valve body; A third connecting plate connected to the end of the third connecting rod located outside the second valve body, and the telescopic end of the third pushing device is in contact with the third connecting plate; A third valve core and a fourth valve core are located in the second valve body, the fourth valve core is connected to the end of the third connecting rod located in the second valve body, and the third valve core and the fourth valve core are connected via a fixing rod; a third shielding portion, connected to the side wall of the third valve core, in contact with the inner wall of the third valve body, and corresponding to the second outlet position; a fourth shielding portion, connected to the side wall of the fourth valve core, in contact with the inner wall of the third valve body, and corresponding to the third outlet position; a third telescopic rod connected between the fourth valve core and the inner wall of the second valve body; A third spring, which is sleeved on the third telescopic rod, and whose two ends are respectively connected to the fourth valve core and the inner wall of the second valve body; a fourth telescopic rod connected between the third valve core and the inner wall of the second valve body; The fourth spring is sleeved on the fourth telescopic rod, and two ends of the fourth spring are respectively connected to the third valve core and the inner wall of the second valve body.

[0008] Furthermore, the connection between the water outlet of the emergency water delivery unit and each of the main water branch pipes is close to the water inlet end of each of the main water branch pipes.

[0009] Furthermore, a third booster pump is provided on the connecting pipe between the water outlet of the emergency water delivery unit and each of the main water branches.

[0010] On the other hand, a city water supply method is provided, wherein water is supplied through the city water supply system, and the method comprises: Divide the urban area into a number of first blocks, and set a water storage unit for each of the first blocks, each of the water storage units is connected to a main water pipeline, the main water pipeline is connected to a number of water supply pipes, and the water supply pipes are connected to a number of water supply branches; The water storage unit delivers water to the main water pipe after pressurization, and the water in the main water pipe passes through the water supply main pipe and the water supply branch pipe in sequence and enters the user end; Acquire the water consumption data of the user end according to the set period, and aggregate all the user ends of each water supply main into a data set; Dividing the data set into different time periods to form the water consumption of all user terminals of each water supply main in different time periods, and storing the data; A first valve is provided at the connection between the main water pipeline and the water supply main; During water supply, the water volume in the water supply main is monitored in real time, and the water consumption in a corresponding time period is extracted, and the opening of the first valve is controlled so that the water entering the water supply main reaches the extracted water consumption in the time period; The main water pipeline is composed of several main water branch pipes. During water supply, the pressure signals and flow signals at the front and rear ends of each main water branch pipe are collected in real time, and whether the main water branch pipe is leaking is determined based on the collected pressure signals and flow signals.

[0011] Furthermore, the water supply pipes on each of the main water pipes are divided into second blocks according to a number P as a group, and each of the second blocks is correspondingly provided with a water replenishment unit, and the water replenishment unit is connected to the water supply pipe; The water replenishment unit is used to replenish water to the water supply main when the opening of the first valve reaches the maximum and the water consumption within the corresponding time period cannot be extracted by the control unit.

[0012] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: in the present invention, the urban area is divided into several first blocks, and a water storage unit is correspondingly arranged for each first block, each water storage unit is connected to a main water pipe, the main water pipe is connected to several water supply pipes, the water supply pipes are connected to several water supply branches, the water supply branches are connected to the user end, and a first valve is arranged at the connection between the main water pipe and the water supply pipe; the water consumption data of the user end is obtained according to a set period, and all the user ends of each water supply pipe are summarized as units to form a data set, the data set is divided according to different time periods to form the water consumption of all user ends of each water supply pipe in different time periods, and the data are stored; when supplying water, the water consumption in the corresponding time period is extracted, and the opening of the first valve is controlled so that the water entering the water supply pipe reaches the extracted water consumption within the time period, thereby improving the water supply capacity during peak water consumption in certain areas and preventing excessive water supply capacity during low water consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of a city water supply system provided by the present invention; Figure 2 It is a control principle diagram of a city water supply system provided by the present invention; Figure 3 It is a schematic diagram of the connection between a main water pipeline and an emergency water delivery unit provided by the present invention; Figure 4 is a structural schematic diagram of a first valve provided by the present invention; Figure 5 is a structural schematic diagram of a second valve provided by the present invention; Figure 6 It is a structural schematic diagram of a second valve provided by the present invention.

[0015] Figure numerals: 1-water storage unit; 2-main water pipeline; 3-first booster pump; 4-water supply main pipe; 5-water supply branch pipe; 6-user end; 7-first valve; 8-first flow sensor; 9-water replenishment unit; 10-first valve body; 11-first inlet; 12-second inlet; 13-first outlet; 14-first push device; 15-second push device; 16-first connecting rod; 17-second connecting rod; 18-first connecting plate; 19-second connecting plate; 20-first valve core; 21-second valve core; 22-first shielding part; 23-second shielding part; 24-first telescopic rod; 25-first spring; 26- The second telescopic rod; 27-the second spring; 28-the main water branch pipe; 29-the pressure sensor; 30-the second flow sensor; 31-the emergency water delivery unit; 32-the second valve; 33-the second valve body; 34-the third inlet; 35-the second outlet; 36-the third outlet; 37-the third pushing device; 38-the third connecting rod; 39-the third connecting plate; 40-the third valve core; 41-the fourth valve core; 42-the third shielding part; 43-the fourth shielding part; 44-the third telescopic rod; 45-the third spring; 46-the fourth telescopic rod; 47-the fourth spring; 48-the second booster pump; 49-the third booster pump; 50-the water reservoir. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Embodiment 1

[0019] See also Figure 1-Figure 6 , a city water supply system, comprising a control unit, a storage unit and a first split module.

[0020] The first segmentation module divides the urban area into a number of first blocks, each of which is provided with a corresponding water storage unit 1, the water storage unit 1 is connected to the main water pipe 2, a first booster pump 3 is provided between the main water pipe 2 and the water storage unit 1, and the main water pipe 2 is connected to a number of water supply mains 4, the water supply mains 4 are connected to a number of water supply branch pipes 5, the water supply branch pipes 5 are connected to the user end 6, the user end 6 is provided with a smart water meter for obtaining the water consumption data of the user end 6 according to a set period; the water in the water storage unit 1 is distributed through the water reservoir 50.

[0021] The control unit is used to receive the water consumption data obtained by the smart water meter, and aggregate all user ends 6 of each water supply main 4 to form a data set. The storage unit is used to divide the data set according to different time periods to form the water consumption of all user ends 6 of each water supply main 4 in different time periods, and store them.

[0022] After the segmentation is completed, the first segmentation module forms an independent number for each first block, and associates the independent number, location information, the independent number of the water supply main 4 in the first block, and the numbers of the smart water meters at all user ends corresponding to the water supply main 4, and stores them in the storage unit; for example, the position of the first block No. 1 is G, the water supply main 4 in the first block No. 1 includes a, b, c, and the smart water meters at the user end in the water supply main 4 numbered a include a1, a2, a3, and so on.

[0023] Since the water consumption in different time periods every day is different, the historical data collected by the smart water meter is taken as the object, and all user ends of each water supply main 4 are summarized as units to form a data set. The time of the day can be divided into M groups of N hours each, so that the water consumption of all user ends of each water supply main 4 in each time period can be formed.

[0024] A first valve 7 is provided at the connection between the main water pipe 2 and the water supply pipe 4. A first flow sensor 8 is provided in the water supply pipe 4 for real-time monitoring of the water volume in the water supply pipe 4. When the time reaches the corresponding time period, the control unit extracts the water consumption in the corresponding time period and controls the opening of the first valve 7 so that the water entering the water supply pipe 4 reaches the extracted water consumption within the time period.

[0025] The above system and method can increase the opening of the first valve 7 during peak water usage in certain areas to improve water supply capacity, and reduce the opening of the first valve 7 during low water usage to prevent excessive water supply capacity.

[0026] Furthermore, the system also includes a second segmentation module for dividing the water supply pipe 4 on each main water pipe 2 into a plurality of second blocks according to a number P as a group, each second block is correspondingly provided with a water replenishment unit 9, and the water replenishment unit 9 is connected to the water supply pipe 4.

[0027] The water replenishment unit is used to replenish the water supply main 4 when the upstream main water pipe 2 is blocked or leaking, resulting in insufficient water supply capacity, and the first valve 7 is opened to the maximum and the control unit cannot extract the water consumption within the corresponding time period.

[0028] Among them, the first valve 7 includes: a first valve body 10, a first inlet 11, a second inlet 12 and a first outlet 13 are opened on the side wall of the first valve body 10, the main water pipe 2 is connected to the first inlet 11, the water replenishment unit 9 is connected to the second inlet 12, and a second booster pump 48 is arranged therebetween, and the first outlet 13 is connected to the water supply main 4.

[0029] A first pushing device 14 and a second pushing device 15 are provided at both ends of the outer side of the first valve body 10. The first pushing device 14 and the second pushing device 15 can be cylinders or electric push rods. The two ends of the first valve body 10 are slidably connected to a first connecting rod 16 and a second connecting rod 17 respectively, and one end of the first connecting rod 16 and the second connecting rod 17 is located outside the first valve body 10, and the other end is located inside the first valve body 10. The ends of the first connecting rod 16 and the second connecting rod 17 located outside the first valve body 10 are connected to a first connecting plate 18 and a second connecting plate 19 respectively. The telescopic end of the first pushing device 14 contacts the first connecting plate 18, and the telescopic end of the second pushing device 15 contacts the second connecting plate 19. A first valve core 20 and a second valve core 21 are provided in the first valve body 10, and are located at the first connecting rod 16 and the second connecting rod 17 respectively. The end portion inside the first valve body 10 is connected, and the side wall of the first valve core 20 is connected with a first blocking portion 22, which contacts the inner wall of the first valve body 10 and corresponds to the position of the first inlet 11; the side wall of the second valve core 21 is connected with a second blocking portion 23, which contacts the inner wall of the first valve body 10 and corresponds to the position of the second inlet 12; a first telescopic rod 24 is connected between the first valve core 20 and the inner wall of the first valve body 10, and a first spring 25 is sleeved on the first telescopic rod 24, and the two ends of the first spring 27 are respectively connected to the first valve core 20 and the inner wall of the first valve body 10; a second telescopic rod 26 is connected between the second valve core 21 and the inner wall of the first valve body 10, and a second spring 27 is sleeved on the second telescopic rod 26, and the two ends of the second spring 27 are respectively connected to the second valve core 21 and the inner wall of the first valve body 10.

[0030] The first pushing device 14 and the second pushing device 15 are communicatively connected with the control unit. When supplying water, based on the water consumption in the corresponding time period extracted by the control unit, the control unit controls the advancement or retreat stroke of the telescopic end of the first pushing device 14 to control the size of the first inlet 11 through the first shielding part 22 to control the water intake; specifically, the telescopic end of the first pushing device 14 extends to push the first connecting plate 18, at which time the first spring 25 extends, and the first shielding part 22 slowly opens the first inlet 11; when closing, the telescopic end of the first pushing device 14 contracts, the first spring 25 contracts, pulls the first valve core 20, and the first shielding part 22 slowly closes the first inlet 11; the first pushing device 14 sets the opening of the first inlet 11 through a unit amount of advancement or retreat stroke, obtains the water intake flow corresponding to different openings of the first inlet 11, and stores the water intake flow corresponding to different openings of the first inlet 11 in the control unit.

[0031] When water replenishment is needed, the first inlet 11 reaches the maximum opening, the first flow sensor 8 detects the water inflow in the water supply pipe 4, and sends it to the control unit. The control unit calculates the water volume that can be reached within the period of time according to the received water inflow, and subtracts the water volume that can be reached within the period of time from the water consumption in the corresponding time period extracted by the control unit to obtain the difference water volume. The water volume that needs to be replenished from the second inlet 12 within the period of time is calculated according to the difference water volume. The control unit controls the advancement or retreat stroke of the second pushing device 15 to control the size of the second inlet 12 through the second shielding portion 23 to control The amount of water replenishment specifically includes: the telescopic end of the second pushing device 15 extends to push the second connecting plate 19, at which time the second spring 27 extends, and the second blocking part 23 slowly opens the second inlet 12; when closing, the telescopic end of the second pushing device 15 contracts, the second spring 27 contracts, and the second valve core 21 is pulled, and the second blocking part 23 slowly closes the second inlet 12; the second pushing device 15 sets the opening of the second inlet 12 through a unit amount of advancement or retreat stroke, obtains the amount of water replenishment corresponding to the opening of the second inlet 12, and stores the amount of water replenishment corresponding to the opening of the second inlet 12 in the control unit.

[0032] By providing the water replenishment unit 9, water can be replenished immediately when the upstream main water pipeline 2 is blocked or leaks, resulting in insufficient water supply capacity.

[0033] Furthermore, the main water pipe 2 is composed of several main water branch pipes 28, and a pressure sensor 29 and a second flow sensor 30 are respectively arranged at the front and rear ends of each main water branch pipe 28, which are used to monitor the pressure signal and flow signal at the front and rear ends of each main water branch pipe 28 in real time, and send them to the control unit. The control unit determines whether the main water branch pipe 28 is leaking based on the collected pressure signal and flow signal.

[0034] When a leak occurs in a pipeline, the pressure inside the pipeline will drop. If the pressure sensors at both ends of the pipeline detect a sudden or continuous drop in pressure, this may be a sign of a leak. At the same time, a leak will cause the amount of fluid flowing through the pipeline to change. If the flow sensor detects an abnormal increase or decrease in flow, it may indicate a leak. Combining pressure and flow data can more accurately determine whether there is a leak. For example, if a change in flow is observed at the same time as a pressure drop, the possibility of a leak is greater.

[0035] Furthermore, the system also includes an emergency water delivery unit 31 ; and two adjacent main water branch pipes 28 are connected via a second valve 32 .

[0036] The second valve 32 includes a second valve body 33, and a third inlet 34, a second outlet 35 and a third outlet 36 are provided on the side wall of the second valve body 33. The third inlet 34 is connected to the water outlet end of the upstream main water branch pipe 28 of the two adjacent main water branch pipes 28, the second outlet 35 is connected to the water inlet end of the other downstream main water branch pipe 28, and the third outlet 36 is connected to the water inlet of the emergency water transfer unit 31. The water outlet of the emergency water transfer unit 31 is connected to each main water branch pipe 28, and the connection between the water outlet of the emergency water transfer unit 31 and each main water branch pipe 28 is close to the water inlet end of each main water branch pipe 28, and a third booster pump 49 is provided on the connecting pipe between the water outlet of the emergency water transfer unit 31 and each main water branch pipe 28.

[0037] The outer end of the second valve body 33 is connected to a third pushing device 37, which can be a cylinder or an electric push rod. The end of the second valve body 33 is slidably connected to a third connecting rod 38, and one end of the third connecting rod 38 is located outside the second valve body 33, and the other end is located inside the second valve body 33. A third valve core 40 and a fourth valve core 41 are provided in the second valve body 33. The third valve core 40 and the fourth valve core 41 are connected by a fixed rod. The fourth valve core 41 is connected to the end of the third connecting rod 38 located in the second valve body 33. The side wall of the fourth valve core 41 is connected to a fourth blocking portion 43, the fourth blocking portion 43 contacts the inner wall of the third valve body 33, and the fourth blocking portion 43 contacts the first and second valve cores 33. The positions of the three outlets 36 correspond; the side wall of the third valve core 40 is connected with a third blocking portion 42, the third blocking portion 42 contacts the inner wall of the third valve body 33, and the third blocking portion 42 corresponds to the position of the second outlet 35; a third telescopic rod 44 is connected between the fourth valve core 41 and the inner wall of the second valve body 33, and a third spring 45 is sleeved on the third telescopic rod 44, and the two ends of the third spring 45 are respectively connected to the fourth valve core 41 and the inner wall of the second valve body 33; a fourth telescopic rod 46 is connected between the third valve core 40 and the inner wall of the second valve body 33, and a fourth spring 47 is sleeved on the fourth telescopic rod 46, and the two ends of the fourth spring 47 are respectively connected to the third valve core 40 and the inner wall of the second valve body 33.

[0038] In this embodiment, the number of main water branch pipes is 4 as an example for explanation. Figure 3 , including four main water branches 28 of A, B, C, and D. The water inlet end of A is connected to the first booster pump 3, a second valve 32 is connected between A and B, the water outlet end of A is connected to the third inlet 34 of the second valve 32, the water inlet end of B is connected to the second outlet 35 of the second valve 32, the third outlet 36 of the second valve 32 is connected to the water inlet of the emergency water delivery unit 31, and so on. B and C, C and D are connected in the same way; under normal circumstances, the third inlet 34 and the second outlet 35 of all the second valves 32 are in an open state, and water is supplied through the entire main water pipeline 2. If a certain main water branch 28 leaks, for example, if B leaks, the pressure of the entire system will generally drop, the pressure and flow of the pipeline section after the leak point will be significantly reduced, and the pressure of the pipeline section before the leak point will be reduced. The flow rate will decrease slightly, and it can be judged that B has leaked. At this time, the control unit controls the telescopic end of the third pushing device 37 of the second valve 32 between A and B and between B and C to extend, the third spring 45 extends, the fourth spring 47 compresses, the third blocking part 42 blocks the second outlet 35, and the fourth blocking part 43 opens the third outlet 36. While the water in A supplies water to the water supply main 4 connected to A, the excess water enters the emergency water transfer unit 31 to prevent further leakage and waste, and will not cause abnormal water supply to the user end corresponding to A; the second valve 32 between B and C is also closed, and the third booster pump 49 corresponding to C is turned on, and water is transferred to C through the emergency water transfer unit 31. C, D and the main water branch pipe 28 behind are supplied with water normally to prevent insufficient water supply downstream due to leakage.

[0039] Secondly, each main water branch pipe 28 has an independent pipe number, and each main water branch pipe 28 is associated and stored with its corresponding position information, the numbers of the corresponding pressure sensor and the second flow sensor in each main water branch pipe 28, and the numbers of the second valves 32 corresponding to both ends of each main water branch pipe 28, so that when a main water branch pipe 28 leaks, it can be quickly identified and repaired.

[0040] Furthermore, liquid level sensors can be respectively arranged in the emergency water transfer unit 31 and the water replenishment unit 9 for real-time monitoring of the water levels in the emergency water transfer unit 31 and the water replenishment unit 9. When the water level in the emergency water transfer unit 31 is lower than the pre-stored lower limit value and during the period of low water usage, the third connecting rod 38 can be pushed by the third pushing device 37 to push the third shielding part 42 and the fourth shielding part 43 to open the second outlet 35 and the third outlet 36 to a half-open state, and water can be transported into the emergency water transfer unit 31 without affecting the normal water supply of the main water pipeline 2. When the liquid level sensor in the emergency water transfer unit 31 detects that the water level is higher than the pre-stored upper limit value, the third outlet 36 is closed.

[0041] In addition, the emergency water delivery unit 31 is connected to the water replenishment unit 9 . When the liquid level sensor in a water replenishment unit 9 detects that the water level is lower than the pre-stored lower limit value, the water in the emergency water delivery unit 31 can be delivered to the water replenishment unit 9 .

[0042] Embodiment 2

[0043] A city water supply method, which supplies water through the city water supply system in embodiment 1, the method comprising: dividing the city area into a plurality of first blocks, providing a water storage unit 1 for each first block, each water storage unit being connected to a main water pipeline 2, the main water pipeline 2 being connected to a plurality of water supply main pipes 4, the water supply main pipes 4 being connected to a plurality of water supply branch pipes 5, the water storage unit 1 being pressurized by a first booster pump 3 and delivering water to the main water pipeline 2, the water in the main water pipeline 2 sequentially passing through the water supply main pipes 4 and the water supply branch pipes 5 to enter a user end 6; obtaining water consumption data of the user end 6 according to a set period, and using each water supply main pipe 2 as the basis for the water consumption data; All user ends of the pipe 4 are aggregated as units to form a data set, and the data set is divided according to different time periods to form the water consumption of all user ends of each water supply pipe 4 in different time periods, and the data is stored; a first valve 7 is set at the connection between the main water pipe 2 and the water supply pipe 4. When supplying water, the water volume in the water supply pipe 4 is monitored in real time, and the water consumption in the corresponding time period is extracted, and the opening of the first valve 7 is controlled so that the water entering the water supply pipe 4 reaches the extracted water consumption within the time period. The specific detailed steps and the structure of the first valve 7 are the same as those in Example 1 and will not be elaborated here.

[0044] In addition, the water supply pipe 4 on each main water pipe 2 is divided into second blocks according to the number P as a group, and each second block is correspondingly provided with a water replenishment unit 9, which is connected to the water supply pipe 4; the water replenishment unit is used to replenish the water supply pipe 7 when the opening of the first valve 7 reaches the maximum and the control unit cannot extract the water consumption within the corresponding time period. The specific detailed steps are the same as those in Example 1 and will not be elaborated here.

[0045] The main water pipeline 2 is composed of a plurality of main water branch pipes 28, and two adjacent main water branch pipes 28 are connected by a second valve 32. During water supply, the pressure signal and flow signal at both ends of each main water branch pipe 28 are collected in real time. Based on the collected pressure signal and flow signal, it is determined whether the main water branch pipe 28 is leaking. After it is determined that a certain main water branch pipe 28 is leaking, the second valve 32 connected to the front and rear of the main water branch pipe 28 is closed. The water of the main water branch pipe 28 upstream of the leakage point is introduced into the emergency water supply unit 31, and the water is supplied to the main water branch pipe 28 downstream of the leakage point through the emergency water supply unit 31. The specific detailed steps and the structure of the second valve 32 are the same as those in Example 1 and will not be elaborated here.

[0046] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A city water supply system, characterized in that: The system comprises: A first segmentation module is used to divide the urban area into a plurality of first blocks, each of which is correspondingly provided with a water storage unit, the water storage unit is connected to a main water pipeline, a first booster pump is provided between the main water pipeline and the water storage unit, and the main water pipeline is connected to a plurality of water supply mains, the water supply mains are connected to a plurality of water supply branches, the water supply branches are connected to a user end, and the user end is provided with a smart water meter for obtaining water consumption data of the user end according to a set period; A control unit, used for receiving water consumption data and aggregating all user terminals of each water supply main into a data set; A storage unit, used to divide the data set into different time periods, form the water consumption of all user terminals of each water supply main in different time periods, and store the water consumption; A first valve is arranged at the connection between the main water pipeline and the water supply main; A first flow sensor is disposed in the water supply main and is used to monitor the water volume in the water supply main in real time; During water supply, the control unit extracts the water consumption in a corresponding time period and controls the opening of the first valve so that the water entering the water supply main reaches the extracted water consumption in the time period; The main water pipeline is composed of several main water branch pipes, and a pressure sensor and a second flow sensor are respectively arranged at the front and rear ends of each main water branch pipe, which are used to collect the pressure signal and flow signal at the front and rear ends of each main water branch pipe in real time. The control unit determines whether the main water branch pipe is leaking based on the collected pressure signal and flow signal.

2. The urban water supply system according to claim 1, characterized in that: The system further comprises: A second segmentation module is used to divide the water supply pipe on each of the main water pipes into a plurality of second blocks according to a number P as a group, each of the second blocks is correspondingly provided with a water replenishment unit, and the water replenishment unit is connected to the water supply pipe; The water replenishment unit is used to replenish water to the water supply main when the opening of the first valve reaches the maximum and the water consumption within the corresponding time period cannot be extracted by the control unit.

3. The urban water supply system according to claim 2, characterized in that: The first valve comprises: The first valve body has a first inlet, a second inlet and a first outlet on its side wall, the main water pipeline is connected to the first inlet, the water replenishment unit is connected to the second inlet, and the first outlet is connected to the water supply main; A first pushing device and a second pushing device are respectively connected to two ends of the first valve body; A first connecting rod and a second connecting rod are slidably connected to two ends of the first valve body, respectively, with one end located outside the first valve body and the other end located inside the first valve body; A first connecting plate and a second connecting plate are respectively connected to the ends of the first connecting rod and the second connecting rod outside the first valve body; the telescopic end of the first pushing device contacts the first connecting plate, and the telescopic end of the second pushing device contacts the second connecting plate; A first valve core and a second valve core are located in the first valve body and are respectively connected to ends of the first connecting rod and the second connecting rod located in the first valve body; a first shielding portion, connected to a side wall of the first valve core, in contact with an inner wall of the first valve body, and corresponding to a position of the first inlet; a second shielding portion connected to a side wall of the second valve core, in contact with an inner wall of the first valve body, and corresponding to a position of the second inlet; A first telescopic rod connected between the first valve core and the inner wall of the first valve body; A first spring, which is sleeved on the first telescopic rod, and whose two ends are respectively connected to the first valve core and the inner wall of the first valve body; a second telescopic rod connected between the second valve core and the inner wall of the first valve body; A second spring is sleeved on the second telescopic rod, and two ends of the second spring are respectively connected to the second valve core and the inner wall of the first valve body; During water supply, based on the water consumption in the corresponding time period extracted by the control unit, the control unit controls the advancement or retreat stroke of the first propulsion device to control the size of the first inlet through the first shielding portion to control the water intake; When replenishing water, the water consumption in the corresponding time period extracted by the control unit is subtracted from the water consumption that can be achieved within the period when the first inlet reaches the maximum opening, to form a differential water volume. Based on the differential water volume, the control unit controls the advancement or retreat stroke of the second propulsion device to control the size of the second inlet through the second blocking part to control the water replenishment amount.

4. The urban water supply system according to claim 3, characterized in that: The system further comprises: an emergency water delivery unit; and two adjacent main water branches are connected via a second valve; The second valve comprises: The second valve body has a third inlet, a second outlet and a third outlet on its side wall, wherein the third inlet is connected to the water outlet end of the upstream main water branch pipe of the two adjacent main water branch pipes, the second outlet is connected to the water inlet end of the other downstream main water branch pipe, the third outlet is connected to the water inlet of the emergency water transfer unit, and the water outlet of the emergency water transfer unit is connected to each of the main water branch pipes; a third pushing device connected to an end of the second valve body; A third connecting rod is slidably connected to the end of the second valve body, with one end located outside the second valve body and the other end located inside the second valve body; A third connecting plate connected to the end of the third connecting rod located outside the second valve body, and the telescopic end of the third pushing device is in contact with the third connecting plate; A third valve core and a fourth valve core are located in the second valve body, the fourth valve core is connected to the end of the third connecting rod located in the second valve body, and the third valve core and the fourth valve core are connected via a fixing rod; a third shielding portion, connected to the side wall of the third valve core, in contact with the inner wall of the third valve body, and corresponding to the second outlet position; a fourth shielding portion, connected to the side wall of the fourth valve core, in contact with the inner wall of the third valve body, and corresponding to the third outlet position; a third telescopic rod connected between the fourth valve core and the inner wall of the second valve body; A third spring, which is sleeved on the third telescopic rod, and whose two ends are respectively connected to the fourth valve core and the inner wall of the second valve body; a fourth telescopic rod connected between the third valve core and the inner wall of the second valve body; The fourth spring is sleeved on the fourth telescopic rod, and two ends of the fourth spring are respectively connected to the third valve core and the inner wall of the second valve body.

5. The urban water supply system according to claim 4, characterized in that: The connection between the water outlet of the emergency water delivery unit and each of the main water branch pipes is close to the water inlet end of each of the main water branch pipes.

6. The urban water supply system according to claim 5, characterized in that: A third booster pump is provided on the connecting pipe between the water outlet of the emergency water delivery unit and each of the main water branches.

7. A method for urban water supply, characterized in that: Water is supplied by the urban water supply system according to any one of claims 1 to 6, the method comprising: Divide the urban area into a number of first blocks, and set a water storage unit for each of the first blocks, each of the water storage units is connected to a main water pipeline, the main water pipeline is connected to a number of water supply pipes, and the water supply pipes are connected to a number of water supply branches; The water storage unit delivers water to the main water pipe after pressurization, and the water in the main water pipe passes through the water supply main pipe and the water supply branch pipe in sequence and enters the user end; Acquire the water consumption data of the user end according to the set period, and aggregate all the user ends of each water supply main into a data set; Dividing the data set into different time periods to form the water consumption of all user terminals of each water supply main in different time periods, and storing the data; A first valve is provided at the connection between the main water pipeline and the water supply main; During water supply, the water volume in the water supply main is monitored in real time, and the water consumption in a corresponding time period is extracted, and the opening of the first valve is controlled so that the water entering the water supply main reaches the extracted water consumption in the time period; The main water pipeline is composed of several main water branch pipes. During water supply, the pressure signals and flow signals at the front and rear ends of each main water branch pipe are collected in real time, and whether the main water branch pipe is leaking is determined based on the collected pressure signals and flow signals.

8. The urban water supply method according to claim 7, characterized in that: Divide the water supply pipes on each of the main water pipes into second blocks according to the number P as a group, and each of the second blocks is correspondingly provided with a water replenishment unit, and the water replenishment unit is connected to the water supply pipe; The water replenishment unit is used to replenish water to the water supply main when the opening of the first valve reaches the maximum and the water consumption within the corresponding time period cannot be extracted by the control unit.

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