CN102808759B - Display control system of water pump and pump group - Google Patents
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Abstract
一种水泵及泵组的显示控制系统：有分别与控制单元连接的传感器组、触摸控制显示屏、与上位机通讯的数据总线接口和水泵变频器。传感器组有设置在水泵出口的水泵出口压力传感器、设置在水泵入口的水泵入口压力传感器、设置在水泵驱动电流上的水泵运行电流传感器以及设置在水泵驱动电压上的水泵运行电压传感器。触摸控制显示屏中设置有与数据处理单元的信号输入端相连的手动控制模块和数据输入模块，与数据处理单元信号输出端相连的水泵状态参数显示模块、管网状态参数显示模块、水泵报警模块以及数据储存模块。本发明测试精度高，控制方便，参数显示全面、实时显示功能，界面友好，直观，成本低，自动化程度高。
A display control system for a water pump and a pump group: a sensor group connected to a control unit, a touch control display screen, a data bus interface for communication with an upper computer, and a water pump frequency converter. The sensor group includes a water pump outlet pressure sensor set at the water pump outlet, a water pump inlet pressure sensor set at the water pump inlet, a water pump running current sensor set at the water pump driving current, and a water pump running voltage sensor set at the water pump driving voltage. The touch control display screen is provided with a manual control module and a data input module connected to the signal input end of the data processing unit, a water pump state parameter display module, a pipe network state parameter display module, and a water pump alarm module connected to the signal output end of the data processing unit and a data storage module. The invention has high test precision, convenient control, comprehensive parameter display, real-time display function, friendly interface, direct view, low cost and high degree of automation.
Description
技术领域 technical field
本发明涉及一种水泵运行的监测控制。特别是涉及一种能够实现水泵特性参数的在线监测控制和实时显示的水泵及泵组的显示控制系统。The invention relates to a monitoring control of water pump operation. In particular, it relates to a display control system of a water pump and a pump group capable of realizing on-line monitoring control and real-time display of characteristic parameters of the water pump.
背景技术 Background technique
当前水泵运行的监测只是以安全运行为主要目的，监测参数通常只包括运行电流、电压、频率和进出口压差，上述参数分别通过电流表、电压表和压力表现场读数方式获得。反映水泵实际运行状态的参数主要包括流量、扬程和功率，流量主要通过超声波流量计测试获取，但是流量计价格较贵、测试方法繁琐、不易实现水泵流量的实时监测，具有很大的局限性；扬程通过水泵前后压力表测试值做差后获取，由于压力表精度不高造成扬程的读数存在较大的误差；功率利用电压电流表的测试数据和相关理论公式求解，由于电压和电流表精度不高造成功率的计算数据存在较大的误差。综上所述，现有的监测数据无法准确反映水泵的运行状态。At present, the main purpose of monitoring the operation of water pumps is only for safe operation. The monitoring parameters usually only include operating current, voltage, frequency and pressure difference between inlet and outlet. The above parameters are obtained by field readings of ammeter, voltmeter and pressure gauge respectively. The parameters that reflect the actual operating status of the pump mainly include flow, head and power. The flow is mainly obtained through ultrasonic flowmeter testing, but the flowmeter is expensive, the test method is cumbersome, and it is difficult to realize real-time monitoring of the pump flow, which has great limitations; The head is obtained by making the difference between the test values of the pressure gauges before and after the pump. Due to the low accuracy of the pressure gauge, there is a large error in the reading of the head; the power is solved by using the test data of the voltage and ammeter and related theoretical formulas. There are large errors in the calculated data of power. To sum up, the existing monitoring data cannot accurately reflect the operation status of the pump.
如果没有较为准确的、全面的、实时的运行数据作支撑，水泵的变流量调节将会变得很困难，致使大部分变流量系统在定流量工况下运行，进而导致水泵输配能耗居高不下。造成现有状况的主要原因是缺乏科学、的水泵特性参数的在线监测控制和实时显示方法。Without the support of more accurate, comprehensive, and real-time operating data, variable flow adjustment of water pumps will become very difficult, resulting in most variable flow systems operating under constant flow conditions, which in turn leads to energy consumption in pump transmission and distribution. Not high enough. The main reason for the current situation is the lack of scientific and accurate online monitoring control and real-time display methods of pump characteristic parameters.
发明内容 Contents of the invention
本发明所要解决的技术问题是，提供一种利用水泵特性曲线、压力传感器监测数据和相应的理论水泵流量和扬程，并根据流量、扬程、电压传感器监测数据、电流传感器监测数据计算水泵效率和管路阻抗的数据修正计算方法，并实现实时监测、显示、储存和控制的水泵及泵组的显示控制系统。The technical problem to be solved by the present invention is to provide a method for calculating pump efficiency and pipe efficiency based on the flow, lift, voltage sensor monitoring data, and current sensor monitoring data by using the water pump characteristic curve, pressure sensor monitoring data and corresponding theoretical water pump flow and lift. A display control system for water pumps and pump sets that realizes real-time monitoring, display, storage and control of the data correction calculation method for road impedance.
本发明所采用的技术方案是：一种水泵及泵组的显示控制系统，包括：数据处理单元，分别与控制单元连接的传感器组、触摸控制显示屏、与上位机通讯的数据总线接口和水泵变频器。The technical solution adopted in the present invention is: a display control system for water pumps and pump sets, including: a data processing unit, a sensor group connected to the control unit, a touch control display screen, a data bus interface for communication with the upper computer, and the water pump inverter.
所述的传感器组包括有设置在水泵出口的水泵出口压力传感器、设置在水泵入口的水泵入口压力传感器、设置在水泵驱动电流上的水泵运行电流传感器以及设置在水泵驱动电压上的水泵运行电压传感器。The sensor group includes a water pump outlet pressure sensor set at the water pump outlet, a water pump inlet pressure sensor set at the water pump inlet, a water pump running current sensor set on the water pump driving current, and a water pump running voltage sensor set on the water pump driving voltage. .
所述的触摸控制显示屏中设置有分别与数据处理单元的信号输入端相连的用于控制水泵的启停和运行频率的手动控制模块、数据输入模块，分别与数据处理单元信号输出端相连的用于实时的显示传感器组的测试数据、水泵的扬程、流量、功率和效率的水泵状态参数显示模块、实时的显示管路阻抗的管网状态参数显示模块、根据水泵运行电压、电流和效率来确定水泵是否在预先设定的安全区内运行的水泵报警模块以及实现水泵参数和管网参数存储的数据储存模块。The touch control display screen is provided with a manual control module and a data input module respectively connected to the signal input end of the data processing unit for controlling the start and stop of the water pump and the operating frequency, and a data input module respectively connected to the signal output end of the data processing unit It is used to display the test data of the sensor group in real time, the water pump status parameter display module of the head, flow rate, power and efficiency of the pump, and the pipeline network status parameter display module for real-time display of pipeline impedance. A water pump alarm module for determining whether the water pump is running in a preset safety zone, and a data storage module for realizing the storage of water pump parameters and pipe network parameters.
所述的数据输入模块所输入的数据包括：水泵频率、厂家提供的水泵特性曲线、测压点之间局部阻力系数和水泵进出口测压点之间的高差；并根据水泵特性曲线和传感器的测试数据反向判读水泵的流量、功率、效率的状态参数。The data input by the data input module includes: water pump frequency, water pump characteristic curve provided by the manufacturer, local resistance coefficient between pressure measuring points and height difference between water pump inlet and outlet pressure measuring points; and according to water pump characteristic curve and sensor The test data of the pump is used to reversely interpret the state parameters of the pump's flow, power, and efficiency.
所述的数据处理单元包括有传感器数据接收模块、与所述的传感器数据接收模块相连的数据转换模块以及与所述的数据转换模块相连的数据修正处理模块，其中，所述的传感器数据接收模块连接传感器组接收传感器组的监测信号，所述的数据转换模块通过数据总线连接触摸控制显示屏中的手动控制模块和数据输入模块，用于接收触摸控制显示屏的输入参数，所述的数据转换模块的输出通过数据总线连接水泵变频器用于将控制信号传给水泵变频器，所述的数据修正处理模块通过数据总线分别连接触摸控制显示屏中的水泵状态参数显示模块、管网状态参数显示模块和水泵报警模块，同时还在触摸控制显示屏中实现数据的存储。The data processing unit includes a sensor data receiving module, a data conversion module connected to the sensor data receiving module, and a data correction processing module connected to the data conversion module, wherein the sensor data receiving module Connect the sensor group to receive the monitoring signal of the sensor group, the data conversion module is connected to the manual control module and the data input module in the touch control display screen through the data bus, and is used to receive the input parameters of the touch control display screen, and the data conversion module The output of the module is connected to the water pump inverter through the data bus to transmit the control signal to the water pump inverter, and the data correction processing module is respectively connected to the water pump status parameter display module and the pipe network status parameter display module in the touch control display screen through the data bus and water pump alarm module, and also realize data storage in the touch control display screen.
本发明的水泵及泵组的显示控制系统，具有以下有益效果：The display control system of the water pump and the pump group of the present invention has the following beneficial effects:
（1）测试精度高。测试设备均为精度较高的传感器，传感器对各个测点的数据进行同一时间采集到，相比人工数据采集，大大提高了测量数据的精确度；(1) High test accuracy. The test equipment is all high-precision sensors, and the sensors collect the data of each measuring point at the same time, which greatly improves the accuracy of the measurement data compared with manual data collection;
（2）成本低，无需安装昂贵的流量测量设备，降低系统造价；(2) Low cost, no need to install expensive flow measurement equipment, reducing system cost;
（3）自动化程度高。通过预先植入的算法，实现对采集数据的快速、集中处理；(3) High degree of automation. Through the pre-implanted algorithm, the rapid and centralized processing of the collected data is realized;
（4）实时显示功能，界面友好。触摸屏上显示菜单栏，以按键的方式显示泵组和管网的各个运行特性参数；(4) Real-time display function, friendly interface. The menu bar is displayed on the touch screen, and various operating characteristic parameters of the pump group and the pipe network are displayed by pressing the buttons;
（5）控制方便，对泵组进行控制之前，预先输入水泵特性曲线方程、测压点之间局部阻力系数、测压点之间相对高差这几个特性参数；控制过程中，只需输入水泵的运行频率便可实现对水泵运行参数的控制。这意味着实际控制中只有频率和启停这两个控制参数，控制方法大大简化；(5) The control is convenient. Before controlling the pump group, the characteristic parameters of the pump characteristic curve equation, the local resistance coefficient between the pressure measurement points, and the relative height difference between the pressure measurement points are input in advance; during the control process, only need to input The operating frequency of the water pump can realize the control of the operating parameters of the water pump. This means that there are only two control parameters, frequency and start-stop, in actual control, and the control method is greatly simplified;
（6）参数显示全面、直观。触摸屏上的显示功能分为4部分：参数输入栏、水泵运行参数栏、管网特性参数栏和报警栏，这4部分通过点击菜单按钮来进行切换。(6) Parameter display is comprehensive and intuitive. The display function on the touch screen is divided into 4 parts: parameter input column, water pump operation parameter column, pipe network characteristic parameter column and alarm column, these 4 parts can be switched by clicking the menu button.
附图说明 Description of drawings
图1是本发明的整体构成框图；Fig. 1 is the overall structure block diagram of the present invention;
图2是传感器组的构成；Fig. 2 is the composition of sensor group;
图3是触摸控制显示屏的构成框图；Fig. 3 is a block diagram of a touch control display screen;
图4是数据处理单元构成框图。Figure 4 is a block diagram of the data processing unit.
1：传感器组 2：数据处理单元1: Sensor group 2: Data processing unit
3：触摸控制显示屏 4：用于远程通讯的数据总线接口模块3: Touch control display screen 4: Data bus interface module for remote communication
5：水泵变频器 1－1：水泵出口压力传感器5: Water pump inverter 1-1: Water pump outlet pressure sensor
1－2：水泵入口压力传感器 1－3：水泵运行电流传感器1-2: Water pump inlet pressure sensor 1-3: Water pump running current sensor
1－4：水泵运行电压传感器 2－1：传感器数据接收模块1-4: Water pump operating voltage sensor 2-1: Sensor data receiving module
2-2：数据转换模块 2-3：数据修正处理模块2-2: Data conversion module 2-3: Data correction processing module
3－1：手动控制模块 3－2：数据输入模块；3-1: Manual control module 3-2: Data input module;
3－3：水泵状态参数显示模块 3－4：管网状态参数显示模块3-3: Water pump status parameter display module 3-4: Pipe network status parameter display module
3－5：水泵报警模块 3－6：数据存储模块3-5: Water pump alarm module 3-6: Data storage module
具体实施方式 Detailed ways
下面结合实施例和附图对本发明的水泵及泵组的显示控制系统做出详细说明。The water pump and the display control system of the pump set of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.
如图1所示，本发明的水泵及泵组的显示控制系统，包括：数据处理单元2，分别与数据处理单元2连接的传感器组1、触摸控制显示屏3、与上位机通讯总线接口4和水泵变频器5。As shown in Figure 1, the display control system of the water pump and the pump group of the present invention includes: a data processing unit 2, a sensor group 1 connected to the data processing unit 2, a touch control display screen 3, and a communication bus interface 4 with the upper computer and water pump frequency converter 5.
如图2所示，本发明所述的传感器组1包括有设置在水泵出口的水泵出口压力传感器1－1、设置在水泵入口的水泵入口压力传感器1－2、设置在水泵驱动电流上的水泵运行电流传感器1－3以及设置在水泵驱动电压上的水泵运行电压传感器1－4。数据处理模块通过模拟量来获取传感器实时数据，处理后实时的显示在触摸显示屏。As shown in Figure 2, the sensor group 1 of the present invention includes a water pump outlet pressure sensor 1-1 arranged at the water pump outlet, a water pump inlet pressure sensor 1-2 arranged at the water pump inlet, and a water pump installed on the driving current of the water pump. The running current sensor 1-3 and the water pump running voltage sensor 1-4 are set on the driving voltage of the water pump. The data processing module obtains the real-time data of the sensor through the analog quantity, and displays it on the touch screen in real time after processing.
如图3所示，所述的触摸控制显示屏3为本发明现场的控制显示设备，所述的触摸控制显示屏3中设置有与数据处理单元2信号输入端相连的用于控制水泵的启停和运行频率的手动控制模块3－1、数据输入模块3-2，与数据处理单元2信号输出端相连的用于实时的显示传感器组1的测试数据（泵前压力、泵后压力、电压、电流）、水泵的扬程、流量、功率和效率的水泵状态参数显示模块3-3、实时的显示管路阻抗的管网状态参数显示模块3－4、根据水泵运行电压、电流和效率来确定水泵是否在预先设定的安全区内运行的水泵报警模块3―5以及实现水泵参数和管网参数存储的数据储存模块3-6。As shown in Figure 3, the touch control display screen 3 is the on-site control display device of the present invention, and the touch control display screen 3 is provided with a start-up device connected to the signal input end of the data processing unit 2 to control the water pump. Manual control module 3-1 for stop and run frequency, data input module 3-2, connected to the signal output end of data processing unit 2 for real-time display of test data of sensor group 1 (pressure before the pump, pressure after the pump, voltage , current), water pump head, flow, power and efficiency of the water pump status parameter display module 3-3, real-time display pipeline impedance pipe network status parameter display module 3-4, determined according to the pump operating voltage, current and efficiency A water pump alarm module 3-5 for whether the water pump is running in a preset safe area, and a data storage module 3-6 for realizing the storage of water pump parameters and pipe network parameters.
所述的手动控制模块3－1主要用来控制水泵的启停和改变运行频率。启停和频率的控制信号经数据处理单元2转变为模拟信号，然后通过数据总线传输到变频器来控制水泵的运行状态。The manual control module 3-1 is mainly used to control the start and stop of the water pump and change the operating frequency. The start-stop and frequency control signals are transformed into analog signals by the data processing unit 2, and then transmitted to the frequency converter through the data bus to control the running state of the water pump.
所述的数据输入模块3-2是通过触摸屏输入的数据，所输入的数据包括：水泵频率、厂家提供的水泵特性曲线、测压点之间局部阻力系数和测压点之间的高差。这些数据是水泵或泵组的数据处理单元2进行数据处理的基础。The data input module 3-2 is data input through the touch screen, and the input data includes: water pump frequency, water pump characteristic curve provided by the manufacturer, local resistance coefficient between pressure measuring points and height difference between pressure measuring points. These data are the basis for data processing by the data processing unit 2 of the water pump or pump set.
所述的上位机通讯总线接口4主要功能是上位机通过数据总线支持远程数据交互和远程控制。The main function of the upper computer communication bus interface 4 is that the upper computer supports remote data interaction and remote control through the data bus.
所述的数据处理单元2是实现数字信号的模拟信号之间的相互转换，进而实现控制信号的输出和测试处理信号的输入；传感器数据接收模块接收传感器的监测信号，然后将监测信号传输到数据处理单元进行处理计算，最后上述监测数据、处理数据均通过数据总线和预输入数据一起输入触摸屏中的数据储存模块3-6实现数据的存储，或者通过与上位机通讯的数据总线接口4传入上位机实现数据的存储。The data processing unit 2 realizes the mutual conversion between the analog signals of the digital signals, and then realizes the output of the control signal and the input of the test processing signal; the sensor data receiving module receives the monitoring signal of the sensor, and then transmits the monitoring signal to the data The processing unit performs processing and calculation, and finally the above-mentioned monitoring data and processing data are input into the data storage module 3-6 in the touch screen through the data bus and the pre-input data together to realize data storage, or pass in through the data bus interface 4 communicating with the host computer The host computer implements data storage.
如图4所示，所述的数据处理单元2具体包括有传感器数据接收模块2－1、与所述的传感器数据接收模块2－1相连的数据转换模块2－2以及与所述的数据转换模块2－2相连的数据修正处理模块2－3，其中，所述的传感器数据接收模块2－1连接传感器组1，接收传感器组1的监测信号，所述的数据转换模块2-2通过数据总线连接触摸控制显示屏3中的手动控制模块3－1和数据输入模块3-2，用于接收触摸控制显示屏3的输入参数，所述的数据转换模块2－2的输出通过数据总线连接水泵变频器5用于将控制信号传给水泵变频器5，所述的数据修正处理模块2－3通过数据总线分别连接触摸控制显示屏3中的水泵状态参数显示模块3-3、管网状态参数显示模块3－4、水泵报警模块3―5和数据储存模块3-6。As shown in Figure 4, the data processing unit 2 specifically includes a sensor data receiving module 2-1, a data conversion module 2-2 connected to the sensor data receiving module 2-1, and a data conversion module 2-2 connected to the data conversion module 2-1. The data correction processing module 2-3 connected to the module 2-2, wherein the sensor data receiving module 2-1 is connected to the sensor group 1 to receive the monitoring signal of the sensor group 1, and the data conversion module 2-2 passes the data The bus connects the manual control module 3-1 and the data input module 3-2 in the touch control display screen 3, and is used to receive the input parameters of the touch control display screen 3, and the output of the data conversion module 2-2 is connected through the data bus The water pump inverter 5 is used to transmit the control signal to the water pump inverter 5, and the data correction processing module 2-3 is respectively connected to the water pump status parameter display module 3-3 and the pipe network status in the touch control display screen 3 through the data bus. Parameter display module 3-4, water pump alarm module 3-5 and data storage module 3-6.
本发明的水泵及泵组的显示控制系统，在对泵组的运行参数进行控制和显示之前，需要通过触摸控制显示屏3预先输入水泵的特性曲线、测压点之间的高差以及测压点之间的局部阻力系数。在实际控制显示过程中，首先通过触摸控制显示屏3输入水泵的运行频率，该参数通过数据处理单元2后转变为变频器5的模拟信号，从而实现对水泵流量的控制；水泵变频后，传感器组1将压力、电流和电压信号传递给数据处理单元2进行修正计算，得到水泵和管网实际工况下的运行参数，包括水泵的扬程、流量、功率、效率以及管路阻抗，并将上述测试数据、计算数据实时的显示和储存在触摸控制显示屏3中。In the display control system of the water pump and the pump group of the present invention, before controlling and displaying the operating parameters of the pump group, it is necessary to input the characteristic curve of the water pump, the height difference between the pressure measurement points and the pressure measurement in advance through the touch control display screen 3 . The local drag coefficient between points. In the actual control and display process, the operating frequency of the water pump is first input through the touch control display screen 3, and the parameter is converted into an analog signal of the frequency converter 5 through the data processing unit 2, thereby realizing the control of the flow of the water pump; after the frequency conversion of the water pump, the sensor Group 1 transmits the pressure, current and voltage signals to the data processing unit 2 for correction and calculation, and obtains the operating parameters of the pump and the pipe network under actual working conditions, including the head, flow rate, power, efficiency and pipeline impedance of the pump, and the above-mentioned Test data and calculation data are displayed and stored in the touch control display screen 3 in real time.
本发明的水泵及泵组的显示控制系统中的测试设备均为传感器，检测精度较高；在检测过程中，实现对各个测试数据的同步测量，使数据测试精度得到了保证；测试数据和处理数据的实时显示可以提高系统运行控制的精确度；为系统中水泵调节前后的效果提供了数据支持。The test equipment in the display control system of the water pump and the pump group of the present invention are all sensors, and the detection accuracy is high; in the detection process, the synchronous measurement of each test data is realized, so that the data test accuracy is guaranteed; the test data and processing The real-time display of data can improve the accuracy of system operation control; it provides data support for the effect of water pumps in the system before and after adjustment.
本发明的水泵及泵组的显示控制系统的参数输入栏中包括：The parameter input column of the display control system of the water pump and the pump group of the present invention includes:
水泵H-Q曲线：对厂家提供的数据进行回归分析，得到二次曲线方程，然后把方程中的各个系数输进控制系统；Water pump H-Q curve: Perform regression analysis on the data provided by the manufacturer to obtain the quadratic curve equation, and then input each coefficient in the equation into the control system;
水泵η-Q曲线：对厂家提供的数据进行回归分析，得到二次曲线方程，然后把方程中的各个系数输进控制系统；Water pump η-Q curve: Perform regression analysis on the data provided by the manufacturer to obtain the quadratic curve equation, and then input each coefficient in the equation into the control system;
水泵N-Q曲线：对厂家提供的数据进行回归分析，得到二次曲线方程，然后把方程中的各个系数输进控制系统；Water pump N-Q curve: Regression analysis is performed on the data provided by the manufacturer to obtain the quadratic curve equation, and then input each coefficient in the equation into the control system;
测压点之间的局部阻力系数：以厂家提供的数据为依据，将测点之间的各个部件的局部阻力系数之和输进控制系统；Local resistance coefficient between pressure measuring points: based on the data provided by the manufacturer, the sum of the local resistance coefficients of each component between the measuring points is input into the control system;
测压点之间的相对高差：测量现场水泵前后压力传感器之间的高差，然后将该数据输进控制系统；Relative height difference between pressure measuring points: measure the height difference between the pressure sensors before and after the on-site water pump, and then input the data into the control system;
水泵频率：该参数为控制参数，当系统需要变流量时，改变输入频率的数值。Pump frequency: This parameter is a control parameter. When the system needs to change the flow rate, change the value of the input frequency.
本发明的水泵及泵组的显示控制系统的水泵运行参数栏，是直接对水泵的各项性能参数进行直观的展示，展示的参数有：The water pump operating parameter column of the display control system of the water pump and the pump group of the present invention directly displays various performance parameters of the water pump directly, and the displayed parameters include:
水泵扬程：流经泵的出口端面与进口断面单位重量流体所具有总能量之差，反应的是系统中的管路压降；Pump lift: the difference between the total energy per unit weight of the fluid flowing through the outlet end face of the pump and the inlet section, which reflects the pressure drop of the pipeline in the system;
水泵流量：直接反应系统中的流量是否满足系统的设计和调控要求；Pump flow rate: whether the flow rate in the direct response system meets the design and control requirements of the system;
运行电流：直接反应电流是否在安全运行区间内，防止烧坏机组；Operating current: directly responds to whether the current is within the safe operating range to prevent the unit from burning out;
运行电压：直接反应水泵的运行电压是否稳定；Operating voltage: directly reflects whether the operating voltage of the pump is stable;
水泵功率：直接反应水泵的运行能耗；Pump power: directly reflects the energy consumption of the pump;
水泵效率：直接反应水泵运行效率；Pump efficiency: directly reflects the operating efficiency of the pump;
上述参数完全反映了水泵的运行状态参数，上述数据为系统的调节和优化提供了基础数据支撑。The above parameters fully reflect the operating state parameters of the pump, and the above data provide basic data support for system adjustment and optimization.
本发明的水泵及泵组的显示控制系统的管网特性参数栏：The pipe network characteristic parameter column of the display control system of the water pump and the pump group of the present invention:
管路阻抗：该参数综合反映了管路上的沿程阻力和局部阻力情况。Pipeline impedance: This parameter comprehensively reflects the along-path resistance and local resistance on the pipeline.
本发明的水泵及泵组的显示控制系统的报警栏：The alarm column of the display control system of the water pump and the pump group of the present invention:
显示超出安全运行范围的参数（电流、电压、水泵效率）名称和参数的实际运行数据，上述参数的主要作用是为将来的故障分析提供数据支持。Display the names of parameters (current, voltage, water pump efficiency) and the actual operating data of the parameters that are beyond the safe operating range. The main function of the above parameters is to provide data support for future failure analysis.
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| CN105952659A (en) * | 2016-05-09 | 2016-09-21 | 湖南耐普泵业股份有限公司 | Intelligent permanent magnet electric pump unit and control method thereof |
| WO2017210283A1 (en) | 2016-05-31 | 2017-12-07 | Fluid Handling Llc | Pump control design toolbox technique for variable speed pumping applications |
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