Control system of water pump

Abstract

The utility model discloses a control system of a water pump, which comprises an on-site acquisition station used for collecting vibration signals of a motor and the water pump; the edge controller is fixed beside the water pump, is connected to the water pump through a cable, and is used for respectively executing the operations of closing the high-voltage cabinet, collecting and judging pressure data and opening a hydraulic control valve according to the vibration signal so as to start the water pump; or respectively executing the operations of closing the hydraulic control valve, reducing the frequency of the frequency converter and opening the high-voltage cabinet so as to close the water pump. By utilizing the edge control box, one-step control of the water pump is comprehensively realized, health diagnosis is carried out on the water pump, and the use stability and safety of the water pump are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump control field, concretely relates to a control system of water pump. BACKGROUND

[0002] With the development of technology, the importance of water pump as the core equipment of water plant operation equipment is self-evident. The control and fault diagnosis of water pump will also affect the operation safety of the whole water plant, and also affect the water supply safety of the majority of residents.

[0003] At present, the existing important water pump in water plant is basically configured with speed regulation equipment, and most of the water plant operators manually adjust the water pump speed, supporting valves and the like according to their own experience, and the operation is relatively complex. In addition, in the existing data monitoring and detection, a large number of complex operations are concentrated in the central control system, and the data processing will be delayed, affecting the response speed of the whole automatic control system.

[0004] In summary, there is a lack of a water pump control and fault diagnosis device with simple operation process and high safety of equipment in the prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a control system of water pump, which can realize one-step control by using edge control box, and process the data of monitoring and detection on the spot at the edge side of water pump, thereby solving the problems of complex equipment operation start and slow response speed of automatic control system.

[0006] According to one aspect of the utility model, a control system of water pump is provided, which comprises: a field acquisition station for collecting vibration signals of a motor and a water pump; an edge controller fixed beside the water pump and connected to the water pump through a cable, for analyzing the vibration signals and comparing the analysis results with a fault characteristic frequency spectrum curve, when the comparison result is that the water pump is "healthy", performing the operations of closing the high-voltage cabinet, collecting and judging the pressure data, and opening the hydraulic control valve to start the water pump; otherwise, performing the operations of opening the high-voltage cabinet, closing the hydraulic control valve, and reducing the frequency of the frequency converter to close the water pump.

[0007] Preferably, the vibration signals include: vertical and horizontal vibration signals of the non-driving end of the motor; vertical and horizontal vibration signals of the driving end of the motor; vertical and horizontal vibration signals of the non-driving end of the water pump; vertical and horizontal vibration signals of the driving end of the water pump; and axial signals of the driving end of the water pump.

[0008] Preferably, the operation of collecting and judging the pressure data by the edge controller comprises: collecting the pressure gauge signal; and according to the pressure gauge signal, judging the size of the pressure at the outlet of the water pump and the total pipe pressure until the pressure at the outlet of the water pump is greater than the total pipe pressure.

[0009] Preferably, the edge controller performs the operation of collecting and judging pressure data, including: further collecting the following signals: 10kV switch cabinet electric energy signal and state control signal, 10kV frequency converter cabinet state and state control signal, and hydraulic control valve state and control signal.

[0010] Preferably, the edge controller is further used for receiving fault signals of the 10kV switch cabinet and the 10kV frequency converter to trigger the pump stopping process.

[0011] Preferably, the operation of reducing the frequency of the frequency converter performed by the edge controller further includes: reducing the frequency of the frequency converter by an algorithm: F(n+1)=F(n)-f×0.2Hz / ms, wherein n is a time step or iteration number, F(n) is the frequency of the frequency converter at the nth time step or iteration, f is an adjustable parameter of 0-5, and F(n+1) is the frequency of the frequency converter at the n+1th time step or iteration, i.e., the frequency at the next time point.

[0012] Preferably, the control system further includes an LED touch screen used by an operator to set a basic starting frequency.

[0013] Preferably, the control system further includes a water pump health platform, which is a set of intelligent software platforms arranged in the edge controller and used for collecting and analyzing vibration data, current and voltage data, etc. of the water pump.

[0014] Preferably, the control system further includes a self-diagnosis module capable of regularly checking the hardware state of itself to ensure normal operation of the control system.

[0015] Preferably, the control system further includes a remote communication module used for sending health diagnosis data to a superior monitoring system for analysis.

[0016] The utility model discloses a control system of water pump, include: field collection station is used for collecting the vibration signal of motor and water pump, edge controller is fixed in water pump side, and is connected to water pump through cable, is used for according to this vibration signal, respectively executes the operation of closing high voltage cabinet, collects and judges pressure data, opens hydraulic control valve to start the water pump, or respectively executes the operation of closing hydraulic control valve, reduces frequency converter frequency, and opens high voltage cabinet to close the water pump. The utility model is used in water supply and drainage factory, pump station engineering, and through the utilization of edge control box, the health diagnosis of water pump is realized simultaneously to the one-step control of water pump, guarantees the stable and safe use of water pump. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 The installation schematic diagram of the control system of the water pump according to the embodiment of the utility model;

[0019] Figure 2 The start flow chart of the control system of the water pump according to the embodiment of the utility model;

[0020] Figure 3 The pump stop flow chart of the control system of the water pump according to the embodiment of the utility model;

[0021] Figure 4 The software platform chart of the control system of the water pump according to the embodiment of the utility model;

[0022] Figure 5 The health analysis data chart of the control system of the water pump according to the embodiment of the utility model;

[0023] Figure 6 The installation large sample chart of the control system of the water pump according to the embodiment of the utility model. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] Reference will now be made in detail to the various embodiments of the utility model, examples of which are illustrated in the accompanying drawings and described below. For the purpose of explanation and definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe the features of the exemplary embodiments shown in the figures with reference to the positions of the features.

[0026] Figures 1-6 The installation schematic diagram, the start flow, the pump stop flow, the software platform, the health analysis data and the installation large sample chart of the control system of the water pump according to the embodiment of the utility model are shown. As shown in the figure, the utility model embodiment provides a control system of water pump, comprising: field acquisition station for collecting the vibration signal of motor and water pump; edge controller is fixed to water pump and is connected to water pump through cable, for analyzing the vibration signal, and comparing the analysis result with fault characteristic spectrum curve, and executing the operation of closing high voltage cabinet, collecting and judging pressure data, opening hydraulic control valve to start the water pump; otherwise, the operation of closing hydraulic control valve, reducing frequency converter frequency, opening high voltage cabinet is executed to close the water pump.

[0027] In the related art, the water pump mostly adopts a frequency conversion device, and the existing operation personnel usually manually adjusts the frequency of the water pump, controls the electric valve and the hydraulic control valve and the like according to experience, so as to realize the operation control of the water pump, and the operation is relatively complex. The edge control box is used for realizing one-step control, that is, one-key starting in the embodiment of the utility model. Not only can the operation process be simplified, and the user only needs to start the operation program of the whole device through a button or an instruction, but also the safety of the device is improved. This mode not only reduces the complex interaction of the user in the starting and operation process of the device, but also reduces the possibility of operation error. According to the embodiment of the utility model, the vibration signal includes: vertical and horizontal vibration signals of the non-driving end of the motor; vertical and horizontal vibration signals of the driving end of the motor; vertical and horizontal vibration signals of the non-driving end of the water pump; vertical and horizontal vibration signals of the driving end of the water pump; and axial signals of the driving end of the water pump.

[0028] According to the embodiment of the utility model, the operation of collecting and judging the pressure data performed by the edge controller includes: collecting the pressure gauge signal; judging the pressure at the outlet of the water pump and the total pipe pressure according to the pressure gauge signal, until the pressure at the outlet of the water pump is greater than the total pipe pressure.

[0029] According to the embodiment of the utility model, the operation of collecting and judging the pressure data performed by the edge controller includes: collecting the following signals: 10kV switch cabinet electric energy signal and state control signal, 10kV frequency converter cabinet state and state control signal, and hydraulic control valve state and control signal.

[0030] According to the embodiment of the utility model, the edge controller is further used for receiving the fault signals of the 10kV switch cabinet and the 10kV frequency converter to trigger the pump stopping process.

[0031] According to the embodiment of the utility model, the operation of reducing the frequency of the frequency converter performed by the edge controller further includes: reducing the frequency of the frequency converter through an algorithm: F(n+1) = F(n) - f x 0.2Hz / ms, wherein n is a time step or an iteration number, F(n) is the frequency of the frequency converter at the nth time step or iteration, f is an adjustable parameter of 0-5, and F(n+1) is the frequency of the frequency converter at the n+1th time step or iteration, that is, the frequency at the next time point.

[0032] According to the embodiment of the utility model, the control system further includes: an LED touch screen, which is used for the operation personnel to set a basic starting frequency.

[0033] According to the embodiment of the utility model, the edge control system further includes a water pump health platform, which is a set of intelligent software platform arranged in the edge controller, and is used for collecting and analyzing the vibration data, the current and voltage data and the like of the water pump.

[0034] According to the embodiment of the utility model, the edge control system further comprises a self-diagnosis module, which can periodically check the hardware state and ensure the normal operation of the control system.

[0035] According to the embodiment of the utility model, the edge control system further comprises a remote communication module, which is used for sending the health diagnosis data to the upper monitoring system for analysis.

[0036] In the related art, the fault diagnosis of the water pump tends to adopt automatic and intelligent control technology, including collecting vibration, temperature, pressure and other data, providing continuous and objective fault diagnosis information, etc., and usually adopts various intelligent algorithms to send the health diagnosis data collected to the upper monitoring system for analysis, and feeds back the analysis result to the operator through the industrial computer.

[0037] The embodiment of the utility model uses the edge control box to provide a local data processing solution for water pump health diagnosis, which can process the data detected by the monitoring at the edge side of the water pump, reduce the data transmission delay and improve the response speed of the entire automatic control system, and the edge control box integrates the intelligent AI algorithm of the water pump health, which can realize data analysis and mode prediction at the equipment side. Avoid concentrating a large number of complex operations in the central control system, so that the water pump operation is more "intelligent" and "healthy".

[0038] The embodiment will be further described below with reference to the drawings.

[0039] The utility model is a control system for water pump health monitoring and one-step operation, and the installation mode is as shown in Figure 1

[0040] A side edge control box is arranged beside the water pump, that is, the control system of the water pump, and the edge box is respectively provided with an edge controller, an LED display screen and a field collection station.

[0041] The edge controller is used for collecting:

[0042] (1) 10kV switch cabinet electric energy signal, state control signal

[0043] (2) 10kV frequency converter cabinet state, control signal

[0044] (3) water pump motor unit temperature signal

[0045] (4) instrument signal

[0046] (5) valve state and control signal.

[0047] The field collection station is used for collecting:

[0048] (1) vertical and horizontal vibration signal of the non-driving end of the motor ​

[0049] (2) Motor drive end vertical, horizontal vibration signal

[0050] (3) Water pump non-drive end vertical, horizontal vibration signal

[0051] (4) Water pump drive end vertical, horizontal vibration signal

[0052] (5) Water pump drive end axial signal

[0053] Figure 2 The start flow chart is shown, in the start flow, the operator only sets the basic start frequency on the 10-inch LED touch screen on the box face of the edge control box. After one-key start operation, the high-voltage cabinet closing operation, the liquid control valve state and the pressure data acquisition are all realized by the edge controller according to the flow.

[0054] Figure 3 The pump stop flow chart is shown, in the pump stop flow, the operator can input the closing instruction, the water pump health heavy fault, the 10kV switch cabinet, the 10kV frequency converter and other fault signals triggered, wherein the frequency reduction speed of the frequency converter can be adjusted through the proportional algorithm ('F' algorithm) to meet the use requirements of different water plants.

[0055] 'F' algorithm: F(n+1)=F(n)-f*0.2Hz / ms (in the formula, f is 0-5 adjustable)

[0056] The water pump health platform is a set of intelligent software platform set in the edge controller, including the collection and analysis of water pump vibration data, current and voltage data.

[0057] The utility model has the following advantages:

[0058] (1) Reduce the complexity of equipment operation start. The utility model uses the edge control box to realize one-step control, that is, one-key start, and the user only needs to start the whole equipment operation program through a button or instruction. Not only can simplify the operation process, reduce the complex interaction of the user in the equipment start and operation process, but also reduce the operation error possibility and improve the safety of the equipment.

[0059] (2) Real-time monitoring and diagnosis of the water pump unit can be realized. The utility model uses the edge control box to provide a local data processing solution for water pump health diagnosis, which can process the monitored data locally at the edge side of the water pump, reduce the data transmission delay and improve the response speed of the whole automatic control system. The edge control box integrates the intelligent AI algorithm of the water pump health, which can realize data analysis, mode prediction and other functions at the equipment side. Avoid concentrating a large number of complex operations in the central control system, so that the water pump operation is more efficient.

[0060] Comprehensive these designs, the utility model not only can provide real-time monitoring data and diagnostic result, still guarantees the safe operation of water pump, is the important tool of water plant and so on application scene improves water pump maintenance efficiency and system reliability.

[0061] The above examples are only examples for clearly illustrating the utility model, and do not limit the embodiments of the utility model. For those skilled in the art, other different forms of changes or variations can be made on the basis of the following description, and these belong to the changes, modifications, replacements and deformations of the principles and spirits of the utility model, still fall within the protection scope of the utility model.

Claims

1. A water pump control system, characterized in that: include: On-site collection station, used to collect vibration signals from motors and water pumps; The edge controller is fixed next to the water pump and connected to the water pump via a cable, and is used to analyze the vibration signal and compare the analysis result with the fault characteristic spectrum curve. When the comparison result shows that the water pump is "healthy", the operations of closing the high-voltage cabinet, collecting and judging the pressure data, and opening the hydraulic control valve are executed to start the water pump; otherwise The water pump is shut down by opening the high-voltage cabinet, closing the hydraulic control valve, and reducing the frequency of the frequency converter.

2. The control system according to claim 1, characterized in that: The vibration signals include: vertical and horizontal vibration signals of the non-driving end of the motor; vertical and horizontal vibration signals of the driving end of the motor; vertical and horizontal vibration signals of the non-driving end of the water pump; vertical and horizontal vibration signals of the driving end of the water pump; and axial signals of the driving end of the water pump.

3. The control system according to claim 2, characterized in that: The edge controller performs operations of collecting and determining pressure data including: collecting pressure gauge signals; The pressure at the water pump outlet and the main pipe pressure are determined according to the pressure gauge signal until the pressure at the water pump outlet is greater than the main pipe pressure.

4. The control system according to claim 3, characterized in that: The edge controller performs operations of collecting and judging pressure data, including: also collecting the following signals: 10kV switch cabinet power signal and status control signal, 10kV inverter cabinet status and status control signal, hydraulic control valve status and control signal.

5. The control system according to claim 4, characterized in that: The edge controller is also used to receive fault signals from the 10kV switch cabinet and the 10kV frequency converter to trigger a pump stop process.

6. The control system according to claim 5, characterized in that: The edge controller also performs the operation of reducing the frequency of the frequency converter: reducing the frequency converter frequency through an algorithm: F(n+1)=F(n)-f×0.2Hz / ms, where n is the time step or the number of iterations, F(n) is the frequency of the frequency converter at the nth time step or iteration, f is an adjustable parameter of 0-5, and F(n+1) is the frequency of the frequency converter at the n+1th time step or iteration, that is, the frequency at the next time point.

7. The control system according to any one of claims 1 to 6, characterized in that: The control system further comprises: an LED touch screen for operators to set the basic starting frequency.

8. The control system according to any one of claims 1 to 6, characterized in that: The control system also includes a water pump health platform, which is an intelligent software platform set up in the edge controller for collecting and analyzing water pump vibration data, current and voltage data.

9. The control system according to claim 1, characterized in that: The control system also includes a self-diagnosis module that can regularly check its own hardware status to ensure the normal operation of the control system.

10. The control system according to claim 1, characterized in that: The control system also includes a remote communication module for sending health diagnosis data to a superior monitoring system for analysis.

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