Vibration and noise reduction system and method for water supply pump group based on smart park computer platform

Abstract

The present invention discloses a vibration reduction and noise reduction system and method for a water supply pump group based on a smart park computer platform, and relates to the field of pump devices. The present invention sets multiple terminal pressure sensors and multiple terminal flow sensors on multiple water-using terminal pipes and connects them to the water-using terminal controllers respectively, sets a water outlet pressure sensor and a water outlet flow sensor on each water pump outlet pipe, and sets a vibration sensor on each water pump base and connects them to the on-site controllers respectively, connects the water-using terminal controller and the on-site controller to the smart park computer platform, so that the smart park computer platform can continuously calculate the flow, head and efficiency of the water pump by collecting three analog signals of flow, pressure and vibration, and continuously adjust the motor frequency of the water pump in real time to ensure that the water pump always maintains the optimal motor frequency and the optimal efficiency point to work, and fundamentally solves the vibration and solid noise caused by the water pump working under non-efficient working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of pump devices, and in particular to a vibration reduction and noise reduction system and method for a water supply pump group based on a smart park computer platform. Background Art

[0002] Water pumps are a type of dynamic equipment. Dynamic equipment will generate vibrations during operation. It is a forced vibration caused by the inertial force of the rotating parts and the disturbance force generated by the eccentric imbalance. In addition to generating high-frequency noise, the vibration also causes vibrations in the building structure through the equipment base and the connection between the pipe and the structure. The movement form of vibration is wave, which transmits the energy of material movement rather than the material itself. When the vibration reaches a certain energy, it will affect the service life of the building. In the building structure, this part of the vibration energy is radiated into the space in the form of sound to generate solid noise, thereby polluting the environment and affecting the working status and physical and mental health of personnel.

[0003] The vibration and noise reduction methods currently used in actual projects are as follows: install rubber vibration dampers and damping spring isolators on the water pump base; install steel limit expansion joints and rubber flexible joints at the inlet and outlet of the water pump; install metal bellows and metal hoses at the connection between the main pipe and branch pipe of the water pump outlet pipe. The above methods are all exogenous vibration and noise reduction measures. However, in actual engineering applications, after adopting exogenous mandatory vibration and noise reduction treatment measures, the water pump still works at a non-optimal motor frequency and non-optimal efficiency point, resulting in still large vibration and noise of the water pump.

[0004] Smart park refers to an intelligent integrated information system of the park based on the Internet of Things. It builds a digital space on the basis of the traditional park to expand the time and space dimensions of the real park, thereby improving the efficiency of the real park and expanding the functions of the real park. This field urgently needs an endogenous vibration and noise reduction solution based on the computer platform of the smart park, in order to solve the pump vibration and solid noise from the root. Summary of the invention

[0005] In response to the problems raised in the above background technology, the present invention provides a vibration and noise reduction system and method for a water pump group based on a smart park computer platform to ensure that the water pump always operates at the optimal motor frequency and optimal efficiency point, thereby solving the problems of water pump vibration and solid noise from the root.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] On the one hand, the present invention provides a vibration reduction and noise reduction system for a water supply pump group based on a smart park computer platform, comprising: a plurality of terminal pressure sensors and a plurality of terminal flow sensors arranged on a plurality of water-using terminal pipes, a water-using terminal controller, a smart park computer platform, an on-site controller, an electric valve arranged on a water supply pipe main pipe, a plurality of water pumps, a water outlet pressure sensor and a water outlet flow sensor arranged on a water outlet pipe of each water pump, and a vibration sensor arranged on a base of each water pump;

[0008] Multiple terminal pressure sensors and multiple terminal flow sensors are respectively connected to the water use terminal controller; the water use terminal controller and the on-site controller are both connected to the smart park computer platform; the electric valve, water pump, water outlet pressure sensor, water outlet flow sensor and vibration sensor are all connected to the on-site controller.

[0009] Optionally, the water pump group vibration and noise reduction system based on the smart park computer platform also includes a differential pressure sensor arranged on the water supply pipe main; the differential pressure sensor is connected to the on-site controller.

[0010] On the other hand, the present invention also provides a method for reducing vibration and noise of a water supply pump group based on a smart park computer platform, which is applied to the water supply pump group vibration and noise reduction system based on the smart park computer platform; the method for reducing vibration and noise of a water supply pump group based on the smart park computer platform includes:

[0011] A plurality of terminal pressure sensors and a plurality of terminal flow sensors respectively collect terminal pressure values ​​and terminal flow values ​​in different water-using terminal pipes, and transmit the plurality of terminal pressure values ​​and the plurality of terminal flow values ​​to the water-using terminal controller in real time;

[0012] The water terminal controller is used to determine the maximum terminal pressure value and the minimum terminal pressure value among multiple terminal pressure values, and calculate the sum of multiple terminal flow values; the water terminal controller sends the maximum terminal pressure value, the minimum terminal pressure value and the sum of the terminal flow value to the smart park computer platform;

[0013] The smart park computer platform is used to determine whether to issue an overpressure or underpressure alarm based on the maximum terminal pressure value and the minimum terminal pressure value, and is also used to determine the number of water pumps to be turned on based on the sum of the terminal flow values ​​and send it to the on-site controller;

[0014] The on-site controller controls the corresponding number of water pumps to be turned on, and collects the outlet pressure value and outlet flow value in the outlet pipe of each turned-on water pump through the outlet pressure sensor and outlet flow sensor, monitors the vibration value of each turned-on water pump through the vibration sensor, and collects the opening signal of the electric valve; the on-site controller sends the outlet pressure value, outlet flow value and vibration value of each turned-on water pump and the opening signal of the electric valve to the smart park computer platform;

[0015] The smart park computer platform adjusts each water pump to the optimal efficiency point according to the water outlet pressure and flow rate of each water pump, and adjusts the opening of the electric valve to minimize the vibration value.

[0016] Optionally, the smart park computer platform adjusts each turned-on water pump to work at an optimal efficiency point according to the outlet water pressure value and outlet water flow value of each turned-on water pump, specifically including:

[0017] The smart park computer platform obtains the motor power for starting the water pump from the control cabinet for starting the water pump;

[0018] The smart park computer platform calculates the efficiency value of each turned-on water pump based on the outlet water pressure value, outlet water flow value and motor power of each turned-on water pump;

[0019] The smart park computer platform calculates the optimal motor frequency that matches the optimal efficiency point of each pump based on the efficiency value and pump performance curve of each pump, and sends it to the on-site controller;

[0020] The on-site controller will adjust the motor of the water pump to the optimal motor frequency.

[0021] Optionally, the smart park computer platform calculates the efficiency value of each turned-on water pump according to the outlet water pressure value, outlet water flow value and motor power of each turned-on water pump, specifically including:

[0022] Determine the head H according to the outlet water pressure value of each turned-on water pump;

[0023] According to the head H, water flow value Q and motor power Pa of each water pump, the efficiency value η of each water pump is calculated using the formula η= (ρ×g×Q×H) / (3600×Pa)×100%; where ρ represents water density and g represents gravitational acceleration.

[0024] Optionally, the simultaneously adjusting the electric valve opening specifically includes:

[0025] The smart park computer platform calculates the optimal water flow rate that matches the optimal efficiency point of each pump based on the pump performance curve of each pump that is turned on;

[0026] The smart park computer platform calculates the optimal valve opening of the electric valve based on the sum of the optimal water flow rates of multiple open water pumps and sends it to the on-site controller;

[0027] The on-site controller adjusts the electric valve opening to the optimal valve opening.

[0028] Optionally, the smart park computer platform is also used to display the terminal pressure value, terminal flow value, outlet water pressure value, outlet water flow value, motor power, efficiency value, motor frequency, electric valve opening and vibration value in real time.

[0029] Optionally, the differential pressure sensor is used to make a comprehensive comparison of multiple terminal pressure values, select the minimum terminal pressure value as the required pump head, and feed it back to the smart park computer platform through an on-site controller.

[0030] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0031] The vibration and noise reduction system and method for a water supply pump group based on a smart park computer platform provided by the present invention, by arranging multiple terminal pressure sensors and multiple terminal flow sensors on multiple water-using terminal pipes and connecting them respectively with water-using terminal controllers, arranging a water outlet pressure sensor and a water outlet flow sensor on the water outlet pipe of each water pump and connecting them respectively with the on-site controller, arranging a vibration sensor on the base of each water pump and connecting them respectively with the on-site controller, connecting the water-using terminal controller and the on-site controller with the smart park computer platform, so that the smart park computer platform can continuously calculate the flow rate, head and efficiency of the water pump by collecting three analog signals of flow rate, pressure and vibration, and continuously adjust the water pump motor frequency in real time to ensure that the water pump always maintains the optimal motor frequency and the optimal efficiency point to work, thereby solving the vibration and solid noise caused by the water pump working under non-efficient working conditions from the root. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.

[0033] Figure 1 It is a structural schematic diagram of a vibration and noise reduction system for a water supply pump group based on a smart park computer platform of the present invention;

[0034] Figure 2 A water pump performance curve diagram provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide a vibration and noise reduction system and method for a water pump group based on a smart park computer platform, so as to ensure that the water pump always operates at the optimal motor frequency and the optimal efficiency point, thereby solving the problems of water pump vibration and solid noise from the root.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 As shown, the present invention is a vibration reduction and noise reduction system for a water supply pump group based on a smart park computer platform, comprising: a plurality of terminal pressure sensors and a plurality of terminal flow sensors arranged on a plurality of water-using terminal pipes, a water-using terminal controller, a smart park computer platform, an on-site controller, an electric valve arranged on the main pipe of the water supply pipe, a plurality of water pumps, a water outlet pressure sensor and a water outlet flow sensor arranged on the outlet pipe of each water pump, and a vibration sensor arranged on the base of each water pump. A plurality of terminal pressure sensors and a plurality of terminal flow sensors are respectively connected to the water-using terminal controller. The water-using terminal controller and the on-site controller are both connected to the smart park computer platform. The electric valve, water pump, water outlet pressure sensor, water outlet flow sensor and vibration sensor are all connected to the on-site controller. In some embodiments, the vibration reduction and noise reduction system for a water supply pump group based on a smart park computer platform also includes a pressure difference sensor arranged on the main pipe of the water supply pipe; the pressure difference sensor is connected to the on-site controller.

[0039] The smart park computer platform serves as a central controller and is usually implemented using an IoT computer. With the help of signal reception and feedback between the IoT computer and the pump valve meter, the operating status of the water pump is continuously calculated and adjusted to ensure that the water pump always operates at the optimal motor frequency and optimal efficiency point, thereby reducing water pump vibration and solid noise.

[0040] For the convenience of description, it is assumed that there are N water use points, that is, there are N water terminal pipes, each of which is equipped with a pressure sensor and a flow sensor, which are called terminal pressure sensors and terminal flow sensors for the convenience of distinction. The nth (1≤n≤N) terminal pressure sensor and the nth terminal flow sensor respectively collect the terminal pressure value and terminal flow value in the nth water terminal pipe.

[0041] The first terminal pressure sensor is set at the first water point, and the Nth pressure sensor is set at the Nth water point. Different water points will have different water consumption, which will lead to different water pressures in the water supply pipe, so it is necessary to monitor the flow and water pressure of each water point. The N terminal pressure sensors and N terminal flow sensors transmit the currently collected N terminal pressure values ​​and N terminal flow values ​​to the water terminal controller in real time.

[0042] The water terminal controller is arranged in the meter room of the water terminal and is connected to the smart park computer platform for signal reception and feedback. Specifically, the water terminal controller compares N terminal pressure values, selects the maximum terminal pressure value and the minimum terminal pressure value and feeds them back to the smart park computer platform. The water terminal controller adds the N terminal flow values, and then transmits the sum of the N terminal flow values ​​to the smart park computer platform.

[0043] The smart park computer platform compares the maximum terminal pressure value and the minimum terminal pressure value with the preset maximum and minimum warning pressure values ​​to determine whether to issue an overpressure or underpressure alarm to ensure the normal water pressure at the terminal water point. The smart park computer platform is also used to determine the number of pumps M to be turned on based on the sum of the N terminal flow values ​​and send it to the on-site controller. The on-site controller controls the corresponding number of pumps to be turned on, which is called M turned-on pumps.

[0044] A pressure sensor and a flow sensor are provided on the water outlet pipe of each water pump, which are respectively called the water outlet pressure sensor and the water outlet flow sensor for the convenience of distinction. A vibration sensor is also provided on the water pump base of each water pump. The water pump used in the present invention is a variable frequency water pump, and the flow sensor used is an electromagnetic flow sensor.

[0045] For M water pumps in operation, the mth (1≤m≤M) outlet water pressure sensor and the mth outlet water flow sensor are set on the outlet water pipe behind the mth water pump. When M water pumps are working at the same time, the water pumps work at different operating points, resulting in inconsistent flow and water pressure in the outlet water pipe behind the pumps. Therefore, it is necessary to monitor the flow and water pressure in the outlet water pipe behind each water pump.

[0046] M outlet pressure sensors and M outlet flow sensors transmit the currently collected M outlet pressure values ​​and M outlet flow values ​​to the on-site controller in real time. The on-site controller is connected to the smart park computer platform for signal reception and feedback. Specifically, the on-site controller compares the M outlet pressure values, selects the maximum outlet pressure value and the minimum outlet pressure value and feeds them back to the smart park computer platform. The smart park computer platform compares the maximum outlet pressure value and the minimum outlet pressure value with the pre-set maximum and minimum outlet pressure values, respectively, to ensure that the outlet pressure of the water pump is normal.

[0047] The mth vibration sensor is set on the pump base of the mth turned-on pump to monitor its vibration value and transmit it to the on-site controller in real time. When M pumps work at the same time, the pumps work at different working points, resulting in inconsistent vibration values. The on-site controller feeds back the vibration value of the pump to the smart park computer platform in real time, and the smart park computer platform issues a command to adjust the working state of the pump in real time according to the vibration value.

[0048] The electric valve is arranged on the main water supply pipe, and the pipeline flow is adjusted by the valve opening. The opening signal of the electric valve is transmitted to the on-site controller in real time, and the opening adjustment signal from the on-site controller is received at the same time.

[0049] The pressure difference sensor is arranged on the main water pipe to compare the water pressures at different water-using ends, select the minimum terminal pressure value among N terminal pressure values ​​as the required water pump head, and then transmit the required water pump head in real time to the on-site controller, which is then fed back to the smart park computer platform through the on-site controller.

[0050] The on-site controller is set in the pump room, receives the pump operation signal (including motor power Pa, motor frequency f and pump speed n), and connects to the smart park computer platform for signal reception and feedback. The pump comes with a control cabinet, which provides signals of motor power Pa, motor frequency f and pump speed n. The on-site controller collects the pump operation signal from the pump control cabinet. The smart park computer platform adjusts the working state of the pump through the collected pump operation signal feedback.

[0051] The smart park computer platform is set up in the park's central control room, receives signals from the water terminal controller and the on-site controller (including pressure value, flow value, vibration value, motor power, motor frequency and water pump speed), sends motor frequency control commands to the variable frequency water pump, and sends valve opening adjustment commands to the electric valve.

[0052] Figure 2 The pump performance curve diagram provided by the embodiment of the present invention, the horizontal axis is the pump flow rate Q, unit m 3 / h; the vertical axis (upper left) is the pump head H, in m; the vertical axis (lower left) is the pump efficiency η, in %; the vertical axis (upper right) is the motor power Pa, in kw; the vertical axis (lower right) is the pump NPSH ((NPSH)r), in m. If a vertical line is connected from top to bottom, and the vertical line intersects with the four curves respectively, then the first intersection from top to bottom is the pump head at a specific flow rate, the second intersection is the motor power at a specific flow rate, the third intersection is the pump efficiency at a specific flow rate, and the fourth intersection is the pump NPSH at a specific flow rate. Each pump has a unique performance curve, which is provided by the pump manufacturer. The pump performance curve can be used to obtain each efficiency point η of the pump and the corresponding pump flow rate Q, pump head H and pump motor power Pa. In practical applications, multiple pumps with the same performance curve are usually selected.

[0053] Because the terminal water point is constantly changing, the terminal flow and water pressure are constantly changing, the flow and head of the water pump are also constantly changing, the working point of the water pump is constantly moving on the water pump performance curve, and the corresponding water pump efficiency point is constantly deviating from the optimal efficiency point of the water pump. Figure 2 The turning point of the efficiency η curve. When the pump efficiency point is not at the optimal efficiency point, it means that the pump is not in the optimal operating state. Because the pump is working at a point offset from the optimal efficiency point, the eccentric imbalance of the pump impeller generates disturbance force, which in turn causes forced vibration and noise of the pump.

[0054] In order to ensure that the water pump continues to work at the offset optimal efficiency point, the present invention provides a method for reducing vibration and noise of a water pump group based on a smart park computer platform. By collecting three analog signals of flow, pressure, and vibration, the smart park computer platform calculates and outputs the optimal motor frequency of the water pump, changes the speed of the water pump, reduces equipment vibration, and thus reduces equipment operation noise. Specifically, the method for reducing vibration and noise of a water pump group based on a smart park computer platform includes:

[0055] S1: Multiple terminal pressure sensors and multiple terminal flow sensors respectively collect terminal pressure values ​​and terminal flow values ​​in different water-using terminal pipes, and transmit the multiple terminal pressure values ​​and multiple terminal flow values ​​to the water-using terminal controller in real time.

[0056] S2: The water terminal controller is used to determine the maximum terminal pressure value and the minimum terminal pressure value among multiple terminal pressure values, and calculate the sum of multiple terminal flow values; the water terminal controller sends the maximum terminal pressure value, the minimum terminal pressure value and the sum of the terminal flow values ​​to the smart park computer platform.

[0057] S3: The smart park computer platform is used to determine whether to issue an overpressure or underpressure alarm based on the maximum terminal pressure value and the minimum terminal pressure value. It is also used to determine the number of water pumps to be turned on based on the sum of the terminal flow values ​​and send it to the on-site controller.

[0058] S4: The on-site controller controls the corresponding number of water pumps to be turned on, and collects the outlet pressure value and outlet flow value in the outlet pipe of each turned-on water pump through the outlet pressure sensor and outlet flow sensor, monitors the vibration value of each turned-on water pump through the vibration sensor, and collects the opening signal of the electric valve. The on-site controller sends the outlet pressure value, outlet flow value and vibration value of each turned-on water pump and the opening signal of the electric valve to the smart park computer platform.

[0059] S5: The smart park computer platform adjusts each turned-on water pump to the optimal efficiency point according to the outlet water pressure value and outlet water flow value of each turned-on water pump, and at the same time adjusts the opening of the electric valve to minimize the vibration value.

[0060] The smart park computer platform receives the terminal pressure value, terminal flow value, outlet water pressure value, outlet water flow value, pump base vibration value, electric valve opening signal and pump operation signal in real time and displays them dynamically on the display screen. Figure 1 The N terminal pressure sensors in the sample are used to collect the terminal flow value. Figure 1 The N terminal flow sensors in the pump are used to collect the vibration values ​​of the pump base. Figure 1 The M vibration sensors in the pump collect the water pump operation signal (including motor power Pa, motor frequency f and water pump speed n) respectively. The water pump's own control cabinet provides the water pump's own control cabinet.

[0061] The smart park computer platform calculates the pump efficiency and motor frequency corresponding to the flow head in the current working state in real time. Specifically, the pump efficiency η is calculated by the smart park computer platform based on the collected data, and the formula is as follows:

[0062] η=(ρ×g×Q×H) / (3600×Pa)×100% (1)

[0063] Where ρ represents the water density, ρ=1000kg / m 3 ; g represents the acceleration due to gravity, g=9.81; Q represents the flow rate, unit is m 3 / h; H represents head, unit is m; Pa represents motor power, unit is W.

[0064] Specifically, for each water pump that is turned on, the smart park computer platform determines its head H (usually the two values ​​are equal) according to the outlet water pressure value of each water pump that is turned on, and then substitutes the head H, outlet water flow value Q and motor power Pa of each water pump that is turned on into formula (1), and the efficiency value η of each water pump that is turned on can be calculated. The smart park computer platform continuously matches the calculated water pump efficiency value η with the optimal efficiency point in the water pump performance curve, calculates the optimal motor frequency that matches the optimal efficiency point of the water pump according to the performance curve relationship of the corresponding model water pump, and then sends a control signal to adjust the motor frequency f to the water pump through the on-site controller, and continuously adjusts the working state of the water pump, thereby ensuring that the water pump efficiency point is always close to or maintained at the optimal efficiency point.

[0065] Each water pump has a unique optimal efficiency point, which can be found on the water pump performance curve of the water pump. The smart park computer platform sends a control signal to adjust the motor frequency f, and then adjusts the water pump flow Q, the water pump head H, and the water pump motor power Pa, so as to adjust the water pump efficiency η. At the same time, the smart park computer platform calculates the opening of the electric valve based on the calculated optimal water outlet flow at the optimal motor frequency of the water pump. Specifically, the smart park computer platform obtains the water pump flow corresponding to the optimal efficiency point of a certain open water pump through the water pump performance curve as its optimal water outlet flow, and then calculates the corresponding optimal valve opening of the electric valve based on the sum of the optimal water outlet flow of M open water pumps.

[0066] In some embodiments, the electric valve opening control is achieved through the electric valve continuous opening feedback mechanism. Specifically, the increase or decrease of the valve position is obtained according to the error signal calculation of the flow setting value (the sum of the optimal water flow in the present invention) and the flow measurement value (the sum of M water flow values), and then a pulse signal is output, and then the pulse signal drives the electric valve motor to rotate forward or reverse, so as to achieve the purpose of controlling the valve opening.

[0067] The smart park computer platform sends a water pump motor frequency adjustment command and an electric valve opening adjustment command to the on-site controller. The on-site controller reduces the water pump motor frequency to the optimal motor frequency according to the water pump motor frequency adjustment command, so that the water pump works at the optimal efficiency point. At the same time, the on-site controller adjusts the electric valve opening to the optimal valve opening according to the electric valve opening adjustment command.

[0068] The above steps complete a working cycle: receiving signal - computer platform calculation - sending action signal - receiving feedback signal. Through real-time and uninterrupted working cycle, the water pump is always ensured to work at the best efficiency point, and the vibration of the water pump is minimized from the root, reducing solid noise.

[0069] The present invention uses the electromagnetic flow sensor, differential pressure sensor, pressure sensor, and vibration sensor configured in the water pump system to collect analog signals of water pressure, differential pressure, flow, and vibration. The signals are analyzed and processed by the smart park computer platform, and the operating frequency signal is fed back to the water pump, and the opening signal is fed back to the electric valve, thereby reducing the speed of the water pump rotor, reducing the disturbance force, and solving the vibration and operating noise caused by the unstable operation of the water pump.

[0070] The present invention provides an intrinsic vibration and noise reduction solution. The smart park computer platform smoothes the numerical curve of the water pump QH-η according to the real-time changes in the flow and water pressure of the water user terminal, and continuously adjusts the water pump motor frequency in real time to ensure that the water pump always operates in a high-efficiency area, thereby solving the problem of water pump vibration and working noise caused by working under non-efficient working conditions from the root.

[0071] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for reducing vibration and noise of a water supply pump group based on a smart park computer platform, characterized in that: Applied to a vibration reduction and noise reduction system for a water supply pump group based on a smart park computer platform; the vibration reduction and noise reduction system for a water supply pump group based on a smart park computer platform comprises: a plurality of terminal pressure sensors and a plurality of terminal flow sensors arranged on a plurality of water-using terminal pipes, a water-using terminal controller, a smart park computer platform, an on-site controller, an electric valve arranged on the main pipe of the water supply pipe, a plurality of water pumps, a water outlet pressure sensor and a water outlet flow sensor arranged on the water outlet pipe of each water pump, and a vibration sensor arranged on the base of each water pump; Multiple terminal pressure sensors and multiple terminal flow sensors are respectively connected to the water use terminal controller; the water use terminal controller and the on-site controller are both connected to the smart park computer platform; the electric valve, water pump, water outlet pressure sensor, water outlet flow sensor and vibration sensor are all connected to the on-site controller; The water supply pump group vibration reduction and noise reduction system based on the smart park computer platform also includes a pressure difference sensor arranged on the main water supply pipe; the pressure difference sensor is connected to the on-site controller; The vibration and noise reduction method for a water pump group based on a smart park computer platform includes: A plurality of terminal pressure sensors and a plurality of terminal flow sensors respectively collect terminal pressure values ​​and terminal flow values ​​in different water-using terminal pipes, and transmit the plurality of terminal pressure values ​​and the plurality of terminal flow values ​​to the water-using terminal controller in real time; The water terminal controller is used to determine the maximum terminal pressure value and the minimum terminal pressure value among multiple terminal pressure values, and calculate the sum of multiple terminal flow values; the water terminal controller sends the maximum terminal pressure value, the minimum terminal pressure value and the sum of the terminal flow values ​​to the smart park computer platform; The smart park computer platform is used to determine whether to issue an overpressure or underpressure alarm based on the maximum terminal pressure value and the minimum terminal pressure value, and is also used to determine the number of water pumps to be turned on based on the sum of the terminal flow values ​​and send it to the on-site controller; The on-site controller controls the corresponding number of water pumps to be turned on, and collects the outlet pressure value and outlet flow value in the outlet pipe of each turned-on water pump through the outlet pressure sensor and outlet flow sensor, monitors the vibration value of each turned-on water pump through the vibration sensor, and collects the opening signal of the electric valve; the on-site controller sends the outlet pressure value, outlet flow value and vibration value of each turned-on water pump and the opening signal of the electric valve to the smart park computer platform; The smart park computer platform adjusts each water pump to the optimal efficiency point according to the water outlet pressure and flow rate of each water pump, and adjusts the opening of the electric valve to minimize the vibration value.

2. The vibration and noise reduction method for a water supply pump group based on a smart park computer platform according to claim 1 is characterized in that: The smart park computer platform adjusts each turned-on water pump to work at the optimal efficiency point according to the outlet water pressure value and outlet water flow value of each turned-on water pump, specifically including: The smart park computer platform obtains the motor power for starting the water pump from the control cabinet for starting the water pump; The smart park computer platform calculates the efficiency value of each turned-on water pump based on the outlet water pressure value, outlet water flow value and motor power of each turned-on water pump; The smart park computer platform calculates the optimal motor frequency that matches the optimal efficiency point of each pump based on the efficiency value and pump performance curve of each pump, and sends it to the on-site controller; The on-site controller will adjust the motor of the water pump to the optimal motor frequency.

3. The vibration and noise reduction method for a water supply pump group based on a smart park computer platform according to claim 2 is characterized in that: The smart park computer platform calculates the efficiency value of each turned-on water pump according to the outlet water pressure value, outlet water flow value and motor power of each turned-on water pump, specifically including: Determine the head H according to the outlet water pressure value of each turned-on water pump; According to the head H, water flow value Q and motor power Pa of each water pump, the efficiency value η of each water pump is calculated using the formula η=(ρ×g×Q×H) / (3600×Pa)×100%; where ρ represents water density and g represents gravitational acceleration.

4. The vibration and noise reduction method for a water supply pump group based on a smart park computer platform according to claim 2 is characterized in that: The simultaneous adjustment of the electric valve opening specifically includes: The smart park computer platform calculates the optimal water flow rate that matches the optimal efficiency point of each pump based on the pump performance curve of each pump that is turned on; The smart park computer platform calculates the optimal valve opening of the electric valve based on the sum of the optimal water flow rates of multiple open water pumps and sends it to the on-site controller; The on-site controller adjusts the electric valve opening to the optimal valve opening.

5. The vibration and noise reduction method for a water supply pump group based on a smart park computer platform according to claim 2 is characterized in that: The smart park computer platform is also used to display the terminal pressure value, terminal flow value, water outlet pressure value, water outlet flow value, motor power, efficiency value, motor frequency, electric valve opening and vibration value in real time.

6. The vibration and noise reduction method for a water supply pump group based on a smart park computer platform according to claim 1 is characterized in that: The differential pressure sensor is used to make a comprehensive comparison of multiple terminal pressure values, select the minimum terminal pressure value as the required pump head, and feed it back to the smart park computer platform through the on-site controller.

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