Intelligent water supply system

Abstract

The application discloses an intelligent water supply system, comprising: at least one set of daily water supply pump combination, the daily water supply pump combination comprising a first water pump and a second water pump arranged in parallel, the water outlets of the first water pump and the second water pump being communicated through a water outlet pipe; an emergency water pump, the emergency water pump being arranged in parallel with the at least one set of daily water supply pump combination, the water outlet of the emergency water pump being communicated with the water outlets of the at least one set of daily water supply pump combination through the water outlet pipe; a first electric valve, the first electric valve being arranged at the water outlet of the emergency water pump and being used for controlling the water flow output by the emergency water pump; and a second electric valve, the second electric valve being arranged on the water outlet pipe and being located between the water outlets of the daily water supply pump combination and the water outlet of the emergency water pump, the second electric valve being used for controlling the water flow output by the daily water supply pump combination; wherein only one of the first electric valve and the second electric valve is in an open state. Through the above mode, the application can save manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water supply, in particular to an intelligent water supply system. BACKGROUND

[0002] The river water supply system of the cruise ship terminal is generally used for daily use, for example, providing water for the cruise ship terminal and the factory area to load and supply cooling water for testing. According to the requirements of the fire department, the factory area should have fire pipes distributed to the cruise ship manufacturing site and the cruise ship debugging site. This requires two water supply systems, which not only complicate the structure, but also cause a large amount of material consumption.

[0003] In addition, the river water supply system of the cruise ship terminal needs to be frequently turned on or off according to actual use, or the water flow size needs to be adjusted, which causes the water pump to be easily damaged. SUMMARY

[0004] The technical problem solved by the present application is to provide an intelligent water supply system that can effectively save costs.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide an intelligent water supply system, comprising: at least one set of daily water supply pump combination, the daily water supply pump combination comprising a first water pump and a second water pump connected in parallel, the water outlets of the first water pump and the second water pump being connected through the water outlet pipe; an emergency water pump, the emergency water pump being connected in parallel with the at least one set of daily water supply pump combination, the water outlet of the emergency water pump and the water outlets of the at least one set of daily water supply pump combination being connected through the water outlet pipe; a first electric valve, the first electric valve being arranged at the water outlet of the emergency water pump and being used to control the water flow output by the emergency water pump; a second electric valve, the second electric valve being arranged on the water outlet pipe between the water outlets of the daily water supply pump combination and the water outlet of the emergency water pump and being used to control the water flow output by the daily water supply pump combination; wherein only one of the first electric valve and the second electric valve is in an open state.

[0006] The beneficial effects of the present application are: different from the prior art, the present application connects the emergency water pump and the daily water supply pump combination in parallel, so that they can share the water supply pipeline, realize the sharing of the fire pipe and the daily water supply pipe, reduce the manufacturing difficulty, and thus save the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0008] Figure 1 is a structural schematic diagram of a first embodiment of the intelligent water supply system provided by the present application;

[0009] Figure 2 is a structural schematic diagram of a second embodiment of the intelligent water supply system provided by the present application;

[0010] Figure 3 is a structural schematic diagram of a third embodiment of the intelligent water supply system provided by the present application. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0012] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of a first embodiment of the intelligent water supply system provided by the present application. The intelligent water supply system 10 includes a daily water supply pump combination 11, an emergency water pump 12, a water outlet pipe 13, a first electric valve 14, a second electric valve 15, and a PLC (Programmable Logic Controller) circuit 16. The daily water supply pump combination includes a first water pump 111 and a second water pump 112. The water outlets of the first water pump 111 and the second water pump 112 are connected through the water outlet pipe 13. The water outlet of the emergency water pump 12 is connected to the water outlets of the daily water supply pump combination 11. In this embodiment scenario, the water outlet of the emergency water pump 12, the water outlet of the first water pump 111, and the water outlet of the second water pump 112 are connected through the water outlet pipe 13. The first electric valve 14 is arranged at the water outlet of the emergency water pump 12 to control the water flow output by the emergency water pump 12. The second electric valve 15 is arranged on the water outlet pipe 13 between the water outlet of the daily water supply pump combination 11 and the water outlet of the emergency water pump 12. In this embodiment scenario, since the first water pump 111, the second water pump 112, and the emergency water pump 12 are arranged in sequence, the second electric valve 15 is arranged between the water outlet of the second water pump 112 and the water outlet of the emergency water pump 12. In this embodiment scenario, only one set of daily water supply pump combination 11 is provided. In other embodiment scenarios, multiple sets of daily water supply pump combination 11 can be provided. The PLC circuit 16 is connected to each component of the intelligent water supply system 10 to control the start and stop of the components.

[0013] The water flow outputted by the daily water supply pump combination 11 is used to provide water for daily use, for example, to provide water for the wharf and the plant area to need water ballast and to provide water for cooling test, etc., while the water flow outputted by the emergency water pump 12 is used for fire fighting to provide water source when there is a dangerous fire in the plant area and the cruise ship. Since the water flow outputted by the emergency water pump 12 is used for fire fighting, a very high water pressure is needed to achieve a high-speed jet water flow to achieve the effect of fire extinguishing, therefore, in the present embodiment, the emergency water pump 12 is a high-pressure water pump.

[0014] In the present embodiment, since the fire-fighting water and the daily water share the same pipeline (the outlet water pipe 13), the PLC circuit 16 controls the first electric valve 14 and the second electric valve 15 to be opened at the same time at most only one of them. If the first electric valve 14 is opened, the second electric valve 15 is closed, at this time, the fire-fighting water provided by the emergency water pump 12 flows in the outlet water pipe 13. If the second electric valve 15 is opened and the first electric valve 14 is closed, at this time, the daily water provided by the daily water supply pump combination 11 flows in the outlet water pipe 13.

[0015] It should be noted that, in the present embodiment, the PLC circuit 16 is used to control the components of the intelligent water supply system 10, in other embodiments, the components of the intelligent water supply system can also be controlled manually or by a combination of PLC circuit 16 and manual control.

[0016] As described above, in the present embodiment, the emergency water pump and the daily water supply pump combination are connected in parallel, so that they can share the water supply pipeline, the fire-fighting pipeline and the daily water supply pipeline are shared, the manufacturing difficulty is reduced, and the manufacturing cost is saved.

[0017] Please refer to Figure 2 , Figure 2Figure 2 is a structural schematic diagram of a second embodiment of the intelligent water supply system provided in the present application. The intelligent water supply system 20 comprises daily water supply pump combinations 21 and 22 arranged in parallel, an emergency water pump 23, a water outlet pipe 24, a first electric valve 25, a second electric valve 26, and a PLC (Programmable Logic Controller) circuit 27. The PLC circuit 27 is connected to each component in the intelligent water supply system 20 to control the switching thereof. The daily water supply pump combination 21 comprises a first water pump 211 and a second water pump 212, and the daily water supply pump combination 22 comprises a first water pump 221 and a second water pump 222. The daily water supply pump combinations 21 and 22 are connected through the water outlet pipe 24. In the present embodiment, the first water pump 211 and the second water pump 212 of the daily water supply pump combination 21, and the first water pump 221 and the second water pump 222 of the daily water supply pump combination 22 are arranged in parallel and are connected through the water outlet pipe 24. The first water pump 211 of the daily water supply pump combination 21 and the first water pump 221 of the daily water supply pump combination 22 are variable frequency water pumps. The second water pump 212 of the daily water supply pump combination 21 and the second water pump 222 of the daily water supply pump combination 22 are ordinary water pumps.

[0018] In the present embodiment, two variable frequency water pumps are arranged. In the control loop of the two variable frequency water pumps, a separate control switch is arranged, which can be used to turn off one variable frequency water pump (for example, the first water pump 221) when the workload is low in normal times, so as to avoid mutual interference of the motors of the first water pump 211 of the daily water supply pump combination 21 and the first water pump 221 of the daily water supply pump combination 22, and to facilitate single pump maintenance and energy saving.

[0019] The water outlet of the emergency water pump 23 and the water outlets of the daily water supply pump combinations 21 and 22 are connected, and in the present embodiment, the water outlet of the emergency water pump 23, the water outlets of the first water pump 211 and the second water pump 212 of the daily water supply pump combination 21, the water outlets of the first water pump 221 and the second water pump 222 of the daily water supply pump combination 22 are connected through the water outlet pipe 24. The first electric valve 25 is arranged at the water outlet of the emergency water pump 23 to control the water flow output by the emergency water pump 23. The second electric valve 26 is arranged on the water outlet pipe 24 between the water outlet of the daily water supply pump combination 22 and the water outlet of the emergency water pump 23, and in the present embodiment, since the first water pump 211 and the second water pump 212 of the daily water supply pump combination 21, the first water pump 221 and the second water pump 222 of the daily water supply pump combination 22, and the emergency water pump 23 are arranged in sequence, the second electric valve 26 is arranged between the water outlet of the second water pump 222 of the daily water supply pump combination 22 and the water outlet of the emergency water pump 23.

[0020] The outlet of the first water pump 211 of the daily water supply pump combination 21 is provided with a pressure sensing device 2111 for detecting the pressure of the outlet of the first water pump 211. The pressure sensing device 2111 and the motor 2112 of the first water pump 211 are connected with the PLC circuit 27. The PLC circuit 27 controls the frequency of the motor 2112 of the first water pump 211 according to the pressure value detected by the pressure sensing device 2111. In other implementation scenarios, since the water flow in each water pipe is flowing, the pressure is balanced, and therefore the pressure sensing device 2111 can also be installed in the outlet water pipe 24 or other places where the pressure can be measured.

[0021] In the present implementation scenario, the head of the first water pump 211 of the daily water supply pump combination 21 at the 0 flow point is 87.06 m, and the pressure in the pipeline is about 0.814 MPa if the terminal does not use water, after deducting the height difference between the highest water level and the pipeline (about 4 m). The outlet water pipe 24 and the water pipe 241 connected with the outlet water pipe 24 of the first water pump 211 of the daily water supply pump combination 21 can withstand a pressure greater than 0.814 MPa to avoid bursting and causing accidents during use. The emergency water pump 23 is a high-pressure fire-fighting water pump, which outputs the water from the dock part of the river water supply system, and therefore the water pipe 242 through which the water flow of the emergency water pump 23 outputs is changed to a 1.1 MPa pipeline.

[0022] The motor 2112 of the first water pump 211 of the daily water supply pump combination 21 is a variable frequency motor. When the first water pump 211 starts, the PLC circuit 27 provides a constant voltage to the motor 2112 of the first water pump 211. When the terminal water consumption is small, the pressure of the outlet of the first water pump 211 increases, and the PLC circuit 27 automatically reduces the frequency of the motor 2112 at this time to ensure the constant pressure of the outlet of the first water pump 211. This not only ensures that the pressure of the pipe 241 near the outlet of the first water pump 211 of the daily water supply pump combination 21 is not too high to avoid damage to the pipeline, but also has obvious energy-saving effect.

[0023] In the present implementation scenario, the pressure range of the outlet of the first water pump 211 of the daily water supply pump combination 21 can be 0.3-0.8 MPa. Assuming that the PLC circuit 27 needs to control the pressure of the outlet of the first water pump 211 to be constant at 0.5-0.55 MPa (that is, the head of the first water pump 211 is 55-60 m), a single first water pump 211 can provide a flow of 0-500 m3 / h, and the frequency range is 41 Hz-50 Hz.

[0024] The first water pump 221 of the daily water supply pump combination 22 has basically the same structure and function as the first water pump 211 of the daily water supply pump combination 21, and will not be described here.

[0025] In the present embodiment, if the water flow provided by the first water pump 211 of the daily water supply pump combination 21 and the first water pump 221 of the daily water supply pump combination 22 is enough to meet the demand when they are turned on, the second water pump 212 of the daily water supply pump combination 21 and the second water pump 222 of the daily water supply pump combination 22 are not turned on. If the water flow provided by the first water pump 211 of the daily water supply pump combination 21 and the first water pump 221 of the daily water supply pump combination 22 is not enough to meet the demand when they are turned on, the second water pump 212 of the daily water supply pump combination 21 and the second water pump 222 of the daily water supply pump combination 22 are turned on. Specifically, taking the daily water supply pump combination 21 as an example, the pressure sensing device 2111 detects the pressure at the water outlet of the first water pump 211, and the PLC circuit 27 obtains the pressure detected by the pressure sensing device 2111. When the pressure is less than a preset threshold, it proves that the water flow provided by the first water pump 211 is not enough to meet the demand, and the PLC circuit 27 controls the second water pump 212 to start. In the present embodiment, the pressure is 0.4 Mpa.

[0026] It should be noted that when the first water pump 211 and the second water pump 212 of the daily water supply pump combination 21 are operated in parallel, the first water pump 211 of the daily water supply pump combination 21 can still adjust the pressure at the water outlet in a variable frequency manner to maintain constant pressure operation. In order to avoid the situation that when the terminal water flow is small, the low frequency of the first water pump 211 of the daily water supply pump combination 21 causes it to be unable to be connected in parallel with the second water pump 212, resulting in water retention of the first water pump 211, the frequency range of the first water pump 211 of the daily water supply pump combination 21 is 41-50 Hz at this time.

[0027] When the terminal water consumption is reduced to the single pump operation, the second water pump 212 of the daily water supply pump combination 21 can be stopped to save energy and prevent the water pressure from being too high. Assuming that the outlet pipe 24 pressure is 0.5Mpa when the double pump is running, as the water consumption decreases, the frequency of the first water pump 211 will decrease, and when the water consumption only needs the single pump flow, the frequency of the first water pump 211 is about 41Hz or lower, at this time the first water pump 211 shut-off point head is the same as the design point head of the second water pump 212, at this time one pump must be closed. At this time, the second water pump 212 is closed, and because the first water pump 211 is running at low speed, after the second water pump 212 is stopped, the signal shows that the outlet pipe 24 pressure will definitely be lower than 0.4Mpa, if the previous logic relationship should be to start the second water pump 212, it is easy to cause the logic relationship to be confused. Therefore, in the present embodiment, the second water pump 212 is controlled by the PLC to start 50 seconds after the first water pump 211 is stopped, but during normal start, the limit signal (delayed start) does not work, avoiding the problem of insufficient pressure for fire water, and solving the problem of frequent start.

[0028] The daily water supply pump combination 22 and the daily water supply pump combination 21 have basically the same structure and principle, which will not be described here.

[0029] It should be noted that in the present embodiment, the PLC circuit 27 is used to control the components of the intelligent water supply system 20, and in other embodiments, the components of the intelligent water supply system 20 can also be controlled manually or by combining PLC circuit 27 and manual control.

[0030] From the above description, it can be seen that the present embodiment can determine whether the water flow provided by the first water pump is sufficient for use by detecting the pressure at the outlet of the first water pump, and if the pressure is too high, it proves that the water flow is too large, and the pressure is reduced by adjusting the frequency of the first water pump motor to save resources and prolong the service life of the water pipe. When it is not enough to use, the second water pump is started, which can effectively reduce the working pressure of the first water pump, meet the use demand, and delay the closing of the second water pump after the water pressure is restored, which can prevent the pump from being frequently turned on and off, prolong the service life of the pump, and save resources.

[0031] Please refer to Figure 3 , Figure 3is a structural schematic diagram of a third embodiment of the intelligent water supply system provided by the present application. The intelligent water supply system 30 comprises daily water supply pump combinations 31 and 32 arranged in parallel, an emergency water pump 33, a water outlet pipe 34, a first electric valve 35, a second electric valve 361, a PLC (Programmable Logic Controller) circuit (not shown in the figure), third electric valves 362, vacuum pumps 381, 382, 383, 384 and 385, fourth electric valves 386, 387, 388, 389 and 380, filters 391, 392, 393 and 394. The daily water supply pump combination 31 comprises a first water pump 311 and a second water pump 312, and the daily water supply pump combination 32 comprises a first water pump 321 and a second water pump 322. Among them, the positions, relationships and functions among the daily water supply pump combinations 31 and 32, the emergency water pump 33, the water outlet pipe 34, the first electric valve 35 and the second electric valve 361 are basically the same as those of the second embodiment of the intelligent water supply system provided by the present application, and will not be described here.

[0032] The third electric valve 362 is located on the water outlet pipe 34, on the side of the water outlet of the daily water supply pump combination 31 far away from the emergency water pump 33, and is used in cooperation with the second electric valve 361 to control the direction of the water flow provided by the daily water supply pump combinations 31 and 32. In the state that the first electric valve 35 is closed, i.e. the state that the emergency water pump 33 does not work, at least one of the second electric valve 361 and the third electric valve 362 is in an open state, so that the water flow provided by the daily water supply pump combinations 31 and 32 can flow out. The third electric valve 362 and the second electric valve 361 are in an open or closed state according to the instructions issued by the PLC circuit.

[0033] The vacuum pumps 381, 382, 383, 384 and 385 are respectively installed at the water inlets of the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33 to suck river water, sea water or lake water from a river, a sea or a lake, and provide the river water, the sea water or the lake water to the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33, so that the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33 can transmit the river water, the sea water or the lake water to the water outlet pipe 34 and then to a required place. The fourth electric valves 386, 387, 388, 389 and 380 are respectively installed between the vacuum pumps 381, 382, 383, 384 and 385 and the water inlets of the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33. The fourth electric valves 386, 387, 388, 389 and 380 are used in cooperation with the vacuum pumps 381, 382, 383, 384 and 385 to make the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33 have a vacuum environment, so that the first water pump 311, the second water pump 312, the first water pump 321, the second water pump 322 and the emergency water pump 33 can smoothly suck water.

[0034] Specifically, the fourth electric valve 386 and the vacuum pump 381 are taken as an example for description. Before the first water pump 311 is started, the PLC circuit controls the vacuum pump 381 to be started and the fourth electric valve 386 to be opened, and controls other electric valves, such as the first electric valve 35, the second electric valve 361, the third electric valve 362 and the like, to be closed. When the first water pump 311 is vacuumized by the vacuum pump 381, the PLC circuit controls the first water pump 311 to be started and the fourth electric valve 386 to be closed. At this time, the first water pump 311 can suck river water, sea water or lake water and the like. In this embodiment, the PLC circuit can control the vacuum pump 381 and the fourth electric valve 386 to be closed in a delayed manner, so as to avoid air entering the first water pump 311 and affecting the water sucking effect of the first water pump 311.

[0035] The working principles and starting sequences of the fourth electric valve 387, the vacuum pump 382 and the second water pump 312, the fourth electric valve 388, the vacuum pump 383 and the first water pump 321, the fourth electric valve 389, the vacuum pump 384 and the second water pump 322, and the fourth electric valve 380, the vacuum pump 385 and the emergency water pump 33 are basically the same, and thus will not be described herein again.

[0036] In the embodiment, the water is extracted from rivers, lakes and seas, and the water contains silt. In order to prevent the silt from polluting, the filter 391, 392, 393 and 394 are arranged at the water outlets of the first water pump 311, the second water pump 312, the first water pump 321 and the second water pump 322 respectively. The filter 391, 392, 393 and 394 are all provided with the fifth electric valve 3911, 3921, 3931 and 3941. The filter 391, 392, 393 and 394 have a timed pollution discharge function. When the pollution discharge function is started, there is a pressure release problem. Whether the pollution is discharged manually or the filter 391, 392, 393 and 394 detects that the pressure difference before and after is large, the pollution discharge will certainly cause the water pipe pressure, thereby causing the pressure to drop. At this time, if the second water pump 312 and / or the second water pump 322 is set to automatically start when the pressure is lower than the preset threshold value, the water pressure may recover immediately after the pollution discharge is completed, and the second water pump 312 and / or the second water pump 322 is stopped again. Frequent starting of the water pump will cause damage to the pump or motor. At this time, the PLC circuit sets a certain delay (or controls the pressure sensing device 3111 to output a protection signal, and the system stops the second water pump 312 and / or the second water pump 322 from starting and / or stopping), adds a pressure control signal to the release pipeline, and delays or changes the pressure signal in the water outlet pipe 34 after a specified range, so that the change of the pressure in the water outlet pipe 34 is not affected. In this way, the pump or motor will not be damaged.

[0037] In the embodiment, the PLC circuit also controls the fifth electric valve 3921 at the water outlet of the second water pump 312 to be closed when the second water pump 312 is started. The fifth electric valve 3921 is opened in delay after the second water pump 312 is started, and the second water pump 312 starts to operate in parallel. The fifth electric valve 3921 at the outlet of the second water pump 312 is also set to close in delay after the second water pump 312 is stopped.

[0038] The PLC circuit controls the fifth electric valve 3941 at the water outlet of the second water pump 322 to work in the same way. Details are not described here.

[0039] It should be noted that, in the embodiment, the PLC circuit is used to control the components of the intelligent water supply system 30. In other embodiments, the components of the intelligent water supply system 30 can also be controlled manually or by a combination of the PLC circuit and manual control.

[0040] As described above, in the embodiment, the vacuum pump is arranged to assist the first water pump and the second water pump to suck water, and the filter is arranged to avoid pollution of silt, which can effectively improve the water quality. When the filter discharges pollution, the PLC circuit sets a certain delay or protection, avoids frequent starting and stopping of the second water pump, effectively prolongs the service life of the system, and saves resources.

[0041] Different from the prior art, the pipeline for fire fighting is combined with the daily water supply pipeline, the manufacturing cost can be saved, the system is intelligently controlled by using the PLC, the labor cost can be reduced, the service life of the water pump can be effectively improved by setting the delay and protection, and the cost is further saved.

[0042] The above is only the embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. An intelligent water supply system characterized in that, The intelligent water supply system is applied to a cruise ship terminal and comprises the following components. at least one set of daily water supply pump combination, the daily water supply pump combination comprising a first water pump and a second water pump arranged in parallel, the water outlets of the first water pump and the second water pump being connected by a water outlet pipe, the water outlets of the first water pump and the second water pump being respectively provided with at least one filter, the water flow output by the daily water supply pump combination being used for daily use, the filter being used for filtering the water flow discharged by the corresponding water pump, the filter being regularly discharged, and the water outlet of the first water pump being provided with a first pressure sensing device; an emergency water pump arranged in parallel with the at least one set of daily water supply pump combination, the water outlet of the emergency water pump being connected with the water outlets of the at least one set of daily water supply pump combination by a water outlet pipe, the water flow output by the emergency water pump being used for fire fighting; a first electric valve arranged at the water outlet of the emergency water pump and used for controlling the water flow output by the emergency water pump; a second electric valve arranged on the water outlet pipe between the water outlets of the daily water supply pump combination and the emergency water pump and used for controlling the water flow output by the daily water supply pump combination; wherein only one of the first electric valve and the second electric valve is in an open state, the second water pump is started when the first pressure sensing device detects that the pressure of the water outlet of the first water pump is greater than a preset first pressure value, the second water pump stops working when the first pressure sensing device detects that the pressure of the water outlet of the first water pump is less than a preset second pressure value, and the first pressure sensing device outputs a protection signal or delays the starting and / or stopping of the second water pump when the filter corresponding to the first water pump is discharged.

2. The system according to claim 1, wherein the second water pump is delayed for a preset time before stopping working.

3. The system according to claim 1, wherein the first water pump is a variable frequency water pump.

4. The system of claim 1, wherein, The system further comprises: a third electric valve arranged on the water outlet pipe close to one end of the water outlet of the daily water supply pump combination and used for cooperating with the second electric valve to control the water flow of the daily water supply pump combination.

5. The system of claim 1, wherein, The system further comprises: a plurality of vacuum pumps and a plurality of fourth electric valves, the plurality of vacuum pumps being respectively arranged at the water inlets of the first water pump, the second water pump and the emergency water pump, and the plurality of fourth electric valves being arranged between the plurality of vacuum pumps and the water inlets of the first water pump, the second water pump and the emergency water pump; before the first water pump, the second water pump or the emergency water pump is started, the corresponding vacuum pump is started and the corresponding fourth electric valve is opened; after the first water pump, the second water pump or the emergency water pump is vacuumized by the vacuum pump, the first water pump, the second water pump or the emergency water pump is started, and the corresponding fourth electric valve is closed.

6. The system according to claim 5, wherein The corresponding vacuum pump and the corresponding fourth electric valve are closed in delay after the first water pump, the second water pump or the emergency water pump is started.

7. The system according to any of claims 1-6, characterized in that, The system further comprises: A programmable logic controller connected to all components of the intelligent water supply system to control its work or stop.

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