CN102808759A - Display control system of water pump and pump group - Google Patents
Display control system of water pump and pump group Download PDFInfo
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- CN102808759A CN102808759A CN2012102816778A CN201210281677A CN102808759A CN 102808759 A CN102808759 A CN 102808759A CN 2012102816778 A CN2012102816778 A CN 2012102816778A CN 201210281677 A CN201210281677 A CN 201210281677A CN 102808759 A CN102808759 A CN 102808759A
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Abstract
The invention discloses a display control system of a water pump and a pump group. The display control system is characterized by comprising a sensor group, a touch control display screen, a data bus interface, and a water pump frequency converter, wherein the sensor group and the touch display screen are connected with a control unit respectively, and the data bus interface is communicated with a host computer. The sensor group is provided with a water pump outlet pressure sensor arranged at an outlet of the water pump, a water pump inlet pressure sensor arranged at an inlet of the water pump, a water pump running current sensor arranged on water pump drive current, and a water pump running voltage sensor arranged on water pump drive voltage. The touch control display screen is provided with a manual control module, a data input module, a water pump state parameter display module, a network state parameter display module, a water pump alarm module, and a data storage module, wherein the manual control module and the data input module are connected with a signal input end of a data processing unit, and the water pump state parameter display module, the network state parameter display module, the water pump alarm module, and the data storage module are connected with a signal output end of the data processing unit. The invention has the advantages of high test precision, convenient control, overall parameter display, real-time display function, friendly and visual interface, low cost, and high degree of automatization.
Description
Technical field
The present invention relates to a kind of Monitoring and Controlling of water pump operation.Particularly relate to a kind of Online Monitoring Control and the water pump that shows in real time and the display control program of pump group that can realize the water pump special parameter.
Background technique
The monitoring of current water pump operation is a main purpose with the safe operation just, and monitoring parameter includes only running current, voltage, frequency and inlet outlet pressure differential usually, and above-mentioned parameter obtains through the on-the-spot reading mode of ammeter, voltmeter and pressure gauge respectively.The parameter of reflection water pump actual motion state mainly comprises flow, lift and power; Flow mainly obtains through the ultrasonic flowmeter test; But the flowmeter price is more expensive, test method is loaded down with trivial details, the difficult real-time monitoring that realizes pump capacity, has significant limitation; Lift obtains after doing difference through pressure gauge test value before and after the water pump, because there is bigger error in the not high reading of lift that causes of pressure gauge precision; The test data of power utilization volometer and correlation theory formula are found the solution, because there is bigger error in the not high calculated data of power that causes of voltage and current meter accuracy.In sum, existing Monitoring Data can't accurately reflect the running state of water pump.
If do not have comparatively accurately, comprehensively, real-time service data supports, the unsteady flow amount of water pump is regulated the very difficulty that will become, and causes most of variable flow system under the flow setting type operating mode, to move, and then causes water pump transmission & distribution energy consumption high.The main cause that causes existing situation be lack of scientific, the Online Monitoring Control and the real-time display method of water pump special parameter.
Summary of the invention
Technical problem to be solved by this invention is; A kind of pump characteristic, pressure sensor monitoring data and its corresponding theory pump capacity and lift of utilizing is provided; And calculate the data correction computational methods of pump efficiency and pipe impedance, and realize monitoring in real time, show, store and the water pump of control and the display control program of pump group according to flow, lift, voltage transducer Monitoring Data, current sensor Monitoring Data.
The technological scheme that the present invention adopted is: the display control program of a kind of water pump and pump group; Comprise: data processing unit, the sensor groups that is connected with control unit respectively, touch the control display screen, with the data bus interface and the pump variable frequency device of upper machine communication.
Described sensor groups includes the exit of pump pressure transducer, the pump entrance pressure transducer that is arranged on pump entrance that are arranged on exit of pump, is arranged on the water pump operation current sensor on the water pump driving current and is arranged on the water pump operation voltage transducer on the water pump driving voltage.
Be provided with the start and stop that are used for control of pump and manual control module, the data input module of operation frequency that link to each other with the signal input part of data processing unit respectively in the described touch control display screen, the pipe network status parameter display modular of the water pump status parameter display modular of the test data that is used for real-time demonstration sensor groups that links to each other with the data processing unit signal output part respectively, lift, flow, power and the efficient of water pump, real-time demonstration pipe impedance, confirm the data storage module that water pump alarm module that whether water pump moves and realization water pump parameter and pipeline parameter are stored in predefined safety zone according to water pump operation voltage, electric current and efficient.
The data that described data input module is imported comprise: coefficient of partial resistance and water pump are imported and exported the discrepancy in elevation between the pressure-measuring point between the pump characteristic that water pump frequency, producer provide, the pressure-measuring point; And according to the status parameter of the flow of the reverse interpretation water pump of the test data of pump characteristic and sensor, power, efficient.
The data correction puocessing module that described data processing unit includes sensing data receiving module, the data conversion module that links to each other with described sensing data receiving module and links to each other with described data conversion module; Wherein, Described sensing data receiving module connects the monitor signal of sensor groups receiving sensor group; Described data conversion module connects manual control module and the data input module that touches in the control display screen through data/address bus; Be used to receive the input parameter that touches the control display screen; The output of described data conversion module connects the pump variable frequency device through data/address bus and is used for control signal is passed to the pump variable frequency device; Described data correction puocessing module connects water pump status parameter display modular, pipe network status parameter display modular and the water pump alarm module that touches in the control display screen respectively through data/address bus, also in touching the control display screen, realizes the storage of data simultaneously.
The display control program of water pump of the present invention and pump group has following beneficial effect:
(1) testing precision is high.Testing apparatus is the higher sensor of precision, and sensor carries out the same time to the data of each measuring point and collects, and compares the artificial data collection, has improved the validity of survey data greatly;
(2) cost is low, need not to install expensive flow measurement, reduces system cost;
(3) automaticity is high.Through the algorithm of implanting in advance, realize to image data fast, focus on;
(4) real-time Presentation Function, friendly interface.Display menu hurdle on the touch screen shows each roadability parameter of pump group and pipe network with the mode of button;
(5) control is convenient, before the pump group is controlled, imports between pump characteristic equation, the pressure-measuring point these several special parameters of relative relief between coefficient of partial resistance, the pressure-measuring point in advance; In the control procedure, only need the operation frequency of input water pump just can realize to the water pump operation parameter control.This means and have only frequency and these two Control Parameter of start and stop in the working control, controlling method is simplified greatly;
(6) parameter shows comprehensive, directly perceived.Presentation Function on the touch screen is divided into 4 parts: parameter input field, water pump operation parameter hurdle, system-head curve parameter hurdle and warning hurdle, this 4 part is switched through clicking menu button.
Description of drawings
Fig. 1 is the whole block diagram that constitutes of the present invention;
Fig. 2 is the formation of sensor groups;
Fig. 3 is the formation block diagram that touches the control display screen;
Fig. 4 is that data processing unit constitutes block diagram.
1: sensor groups 2: data processing unit
3: touch control display screen 4: the data bus interface module that is used for telecommunication
5: pump variable frequency device 1-1: exit of pump pressure transducer
1-2: pump entrance pressure transducer 1-3: water pump operation current sensor
1-4: water pump operation voltage transducer 2-1: sensing data receiving module
2-2: data conversion module 2-3: data correction puocessing module
3-1: manual control module 3-2: data input module;
3-3: water pump status parameter display modular 3-4: pipe network status parameter display modular
3-5: water pump alarm module 3-6: data memory module
Embodiment
Below in conjunction with embodiment and accompanying drawing the display control program of water pump of the present invention and pump group is made detailed description.
As shown in Figure 1, the display control program of water pump of the present invention and pump group comprises: data processing unit 2, the sensor groups 1 that is connected with data processing unit 2 respectively, touch control display screen 3, with upper machine communication EBI 4 and pump variable frequency device 5.
As shown in Figure 2, sensor groups 1 of the present invention includes the exit of pump pressure transducer 1-1, the pump entrance pressure transducer 1-2 that is arranged on pump entrance that are arranged on exit of pump, is arranged on the water pump operation current sensor 1-3 on the water pump driving current and is arranged on the water pump operation voltage transducer 1-4 on the water pump driving voltage.Data processing module obtains the sensor in real time data through analog amount, handles the afterwards real-time touch screen display that is presented at.
As shown in Figure 3; Described touch control display screen 3 is the on-the-spot control display device of the present invention; Be provided with the start and stop that are used for control of pump and manual control module 3-1, the data input module 3-2 of operation frequency that link to each other with data processing unit 2 signal input parts in the described touch control display screen 3, the pipe network status parameter display modular 3-4 of the water pump status parameter display modular 3-3 of lift, flow, power and the efficient of the test data that is used for real-time demonstration sensor groups 1 that links to each other with data processing unit 2 signal output parts (pressure, voltage, electric current behind the preceding pressure of pump, the pump), water pump, real-time demonstration pipe impedance, confirm the data storage module 3-6 that water pump alarm module 3-5 that whether water pump moves and realization water pump parameter and pipeline parameter store in predefined safety zone according to water pump operation voltage, electric current and efficient.
Described manual control module 3-1 mainly be used for control of pump start and stop with change operation frequency.The control signal of start and stop and frequency changes analogue signal into through data processing unit 2, is transferred to the running state that frequency variator comes control of pump through data/address bus then.
Described data input module 3-2 is that the data of being imported comprise: the discrepancy in elevation between the pump characteristic that water pump frequency, producer provide, the pressure-measuring point between coefficient of partial resistance and the pressure-measuring point through the data of touch screen input.These data are bases that the data processing unit 2 of water pump or pump group carries out data processing.
Described upper machine communication EBI 4 major functions are that upper-position unit passes through the mutual and telecontrol of data/address bus support teledata.
Described data processing unit 2 is the mutual conversions that realize between the analogue signal of digital signal, and then realizes the output of control signal and the input of test processes signal; The monitor signal of sensing data receiving module receiving sensor; Then monitor signal is transferred to data processing unit and handles calculating; Last above-mentioned Monitoring Data, processing data are perhaps imported the storage that upper-position unit is realized data into through the data bus interface 4 with upper machine communication all through data/address bus with import data in advance and import the storage that data storage module 3-6 in the touch screen realizes data together.
As shown in Figure 4; The data correction puocessing module 2-3 that described data processing unit 2 specifically includes sensing data receiving module 2-1, the data conversion module 2-2 that links to each other with described sensing data receiving module 2-1 and links to each other with described data conversion module 2-2; Wherein, Described sensing data receiving module 2-1 connects sensor groups 1; The monitor signal of receiving sensor group 1; Described data conversion module 2-2 connects manual control module 3-1 and the data input module 3-2 that touches in the control display screen 3 through data/address bus; Be used to receive the input parameter that touches control display screen 3; The output of described data conversion module 2-2 connects pump variable frequency device 5 through data/address bus and is used for control signal is passed to pump variable frequency device 5, and described data correction puocessing module 2-3 connects water pump status parameter display modular 3-3, pipe network status parameter display modular 3-4, water pump alarm module 3-5 and the data storage module 3-6 that touches in the control display screen 3 respectively through data/address bus.
The display control program of water pump of the present invention and pump group; Before the Operational Limits of pump group being controlled and shown, need import the characteristic curve of water pump, the discrepancy in elevation and the coefficient of partial resistance between the pressure-measuring point between the pressure-measuring point in advance through touching control display screen 3.In the working control procedure for displaying, at first through touching the operation frequency of control display screen 3 input water pumps, this parameter changes the analogue signal of frequency variator 5 into after through data processing unit 2, thereby realizes the control to pump capacity; Behind the pump variable frequency; Sensor groups 1 passes to data processing unit 2 with pressure, electric current and voltage signal and carries out corrected Calculation; Obtain the Operational Limits under water pump and the pipe network actual conditions; The lift, flow, power, efficient and the pipe impedance that comprise water pump, and the demonstration that above-mentioned test data, calculated data is real-time and being stored in touches in the control display screen 3.
Testing apparatus in the display control program of water pump of the present invention and pump group is sensor, and testing precision is higher; In testing process, realize synchro measure to each test data, the data test precision is guaranteed; The real-time demonstration of test data and processing data can the raising system move the validity of controlling; The effect of regulating front and back for water pump in the system provides the data support.
Comprise in the parameter input field of the display control program of water pump of the present invention and pump group:
Water pump H-Q curve: the data to producer provides are carried out regression analysis, obtain quadratic curve equation, are input into control system to each coefficient in the equation then;
Water pump η-Q curve: the data to producer provides are carried out regression analysis, obtain quadratic curve equation, are input into control system to each coefficient in the equation then;
Water pump N-Q curve: the data to producer provides are carried out regression analysis, obtain quadratic curve equation, are input into control system to each coefficient in the equation then;
Coefficient of partial resistance between the pressure-measuring point: the data that provide with producer are foundation, and the coefficient of partial resistance sum of each parts between the measuring point is input into control system;
Relative relief between the pressure-measuring point: the discrepancy in elevation before and after the measure field water pump between the pressure transducer is input into control system with these data then;
The water pump frequency: this parameter is a Control Parameter, when system needs the unsteady flow amount, changes the numerical value of incoming frequency.
The water pump operation parameter hurdle of the display control program of water pump of the present invention and pump group is directly the various performance parameters of water pump to be showed intuitively the parameter of displaying has:
Pump head: the poor of delivery side of pump end face and admission section unit weight total energy that fluid has of flowing through, reaction be the pressure-drop in pipeline in the system;
Pump capacity: whether the flow in the direct reacting system satisfies the design and the regulation and control requirement of system;
Running current: directly whether kinetic current in the safe operation interval, prevents to burn out unit;
Working voltage: whether the working voltage that directly reacts water pump is stable;
Pump power: the operation energy consumption that directly reacts water pump;
Pump efficiency: directly react water pump efficiency;
Above-mentioned parameter has reflected the running state parameter of water pump fully, and above-mentioned data are that adjusting and the optimization of the system data that provide the foundation support.
The system-head curve parameter hurdle of the display control program of water pump of the present invention and pump group:
Pipe impedance: this parametric synthesis has reflected on-way resistance and the local resistance situation on the pipeline.
The warning hurdle of the display control program of water pump of the present invention and pump group:
Show to exceed parameter (electric current, voltage, the pump efficiency) title of safe operation scope and the actual operating data of parameter that the main effect of above-mentioned parameter is for trouble analysis in the future the data support to be provided.
Claims (5)
1. the display control program of water pump and pump group; It is characterized in that; Comprise: data processing unit (2), the sensor groups that is connected with control unit respectively (1), touch control display screen (3), with the data bus interface (4) and the pump variable frequency device (5) of upper machine communication.
2. the display control program of water pump according to claim 1 and pump group; It is characterized in that described sensor groups (1) includes the exit of pump pressure transducer (1-1), the pump entrance pressure transducer (1-2) that is arranged on pump entrance that are arranged on exit of pump, is arranged on the water pump operation current sensor (1-3) on the water pump driving current and is arranged on the water pump operation voltage transducer (1-4) on the water pump driving voltage.
3. the display control program of water pump according to claim 1 and pump group; It is characterized in that; Be provided with the start and stop that are used for control of pump and manual control module (3-1), the data input module (3-2) of operation frequency that link to each other with the signal input part of data processing unit (2) respectively in the described touch control display screen (3), the pipe network status parameter display modular (3-4) of the water pump status parameter display modular (3-3) of the test data that is used for real-time demonstration sensor groups (1) that links to each other with data processing unit (2) signal output part respectively, lift, flow, power and the efficient of water pump, real-time demonstration pipe impedance, confirm the data storage module (3-6) that water pump alarm module (3-5) that whether water pump moves and realization water pump parameter and pipeline parameter are stored in predefined safety zone according to water pump operation voltage, electric current and efficient.
4. the display control program of water pump according to claim 3 and pump group; It is characterized in that the data that described data input module (3-2) is imported comprise: coefficient of partial resistance and water pump are imported and exported the discrepancy in elevation between the pressure-measuring point between the pump characteristic that water pump frequency, producer provide, the pressure-measuring point; And according to the status parameter of the flow of the reverse interpretation water pump of the test data of pump characteristic and sensor, power, efficient.
5. the display control program of water pump according to claim 1 and pump group; It is characterized in that; The data correction puocessing module (2-3) that described data processing unit (2) includes sensing data receiving module (2-1), the data conversion module (2-2) that links to each other with described sensing data receiving module (2-1) and links to each other with described data conversion module (2-2); Wherein, Described sensing data receiving module (2-1) connects the monitor signal of sensor groups (1) receiving sensor group (1); Described data conversion module (2-2) connects manual control module (3-1) and the data input module (3-2) that touches in the control display screen (3) through data/address bus; Be used for receiving the input parameter that touches control display screen (3); The output of described data conversion module (2-2) connects pump variable frequency device (5) through data/address bus and is used for control signal is passed to pump variable frequency device (5); Described data correction puocessing module (2-3) connects water pump status parameter display modular (3-3), pipe network status parameter display modular (3-4) and the water pump alarm module (3-5) that touches in the control display screen (3) respectively through data/address bus, also in touching control display screen (3), realizes the storage of data simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210281677.8A CN102808759B (en) | 2012-08-08 | 2012-08-08 | Display control system of water pump and pump group |
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| CN201210281677.8A CN102808759B (en) | 2012-08-08 | 2012-08-08 | Display control system of water pump and pump group |
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| CN102808759A true CN102808759A (en) | 2012-12-05 |
| CN102808759B CN102808759B (en) | 2014-10-15 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352790A (en) * | 2013-07-04 | 2013-10-16 | 商水桥 | Feedback type waterwheel scene electricity generating unit |
| CN104460627A (en) * | 2014-12-10 | 2015-03-25 | 国家电网公司 | Hydropower station hydroelectric generating set display and control system and control method thereof |
| CN105422430A (en) * | 2015-11-25 | 2016-03-23 | 湖南耐普泵业股份有限公司 | Diesel engine water pump control system and method |
| 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 |
| CN106089675A (en) * | 2016-08-01 | 2016-11-09 | 南京腾图节能科技有限公司 | A kind of portable pump energy consumption assessment instrument |
| CN107327398A (en) * | 2017-08-30 | 2017-11-07 | 安徽天达网络科技有限公司 | A kind of Computer Automatic Test System for pump performance |
| US11035368B2 (en) | 2016-05-31 | 2021-06-15 | Fluid Handling Llc | Pump control design toolbox technique for variable speed pumping applications |
| CN113623193A (en) * | 2021-08-10 | 2021-11-09 | 浙江大学湖州研究院 | Variable frequency pump running state monitoring system and monitoring method thereof |
| CN113915094A (en) * | 2021-09-23 | 2022-01-11 | 广州市昕恒泵业制造有限公司 | Control system of internal combustion engine pump set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169565A (en) * | 1996-12-10 | 1998-06-23 | Ebara Corp | Liquid filling device |
| CN201383104Y (en) * | 2009-04-17 | 2010-01-13 | 孙青格 | Digital multi-functional special-purpose fire water supply device controller |
| CN201925144U (en) * | 2011-01-05 | 2011-08-10 | 湖南星奥信息技术有限公司 | Automatic control device of mine water pump |
| CN201972194U (en) * | 2010-12-15 | 2011-09-14 | 广州星辰热能科技有限公司 | Intelligent frequency-variable constant-pressure water supply system |
| US20110307106A1 (en) * | 2010-06-14 | 2011-12-15 | Kevin Charles Dutt | Methods and Systems for Monitoring, Controlling, and Recording Performance of a Storm Water Runoff Network |
| CN202203098U (en) * | 2011-08-26 | 2012-04-25 | 上海航天动力科技工程有限公司 | Self-protection system of pump and intelligent pump with same |
-
2012
- 2012-08-08 CN CN201210281677.8A patent/CN102808759B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169565A (en) * | 1996-12-10 | 1998-06-23 | Ebara Corp | Liquid filling device |
| CN201383104Y (en) * | 2009-04-17 | 2010-01-13 | 孙青格 | Digital multi-functional special-purpose fire water supply device controller |
| US20110307106A1 (en) * | 2010-06-14 | 2011-12-15 | Kevin Charles Dutt | Methods and Systems for Monitoring, Controlling, and Recording Performance of a Storm Water Runoff Network |
| CN201972194U (en) * | 2010-12-15 | 2011-09-14 | 广州星辰热能科技有限公司 | Intelligent frequency-variable constant-pressure water supply system |
| CN201925144U (en) * | 2011-01-05 | 2011-08-10 | 湖南星奥信息技术有限公司 | Automatic control device of mine water pump |
| CN202203098U (en) * | 2011-08-26 | 2012-04-25 | 上海航天动力科技工程有限公司 | Self-protection system of pump and intelligent pump with same |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352790A (en) * | 2013-07-04 | 2013-10-16 | 商水桥 | Feedback type waterwheel scene electricity generating unit |
| CN103352790B (en) * | 2013-07-04 | 2016-12-07 | 绍兴市碧湖环保科技有限公司 | Reaction type waterwheel view generating set |
| CN104460627B (en) * | 2014-12-10 | 2017-03-08 | 国家电网公司 | A kind of power station turbine-generator units display ＆ control system and its control method |
| CN104460627A (en) * | 2014-12-10 | 2015-03-25 | 国家电网公司 | Hydropower station hydroelectric generating set display and control system and control method thereof |
| CN105422430A (en) * | 2015-11-25 | 2016-03-23 | 湖南耐普泵业股份有限公司 | Diesel engine water pump control system and method |
| CN105422430B (en) * | 2015-11-25 | 2018-04-06 | 湖南耐普泵业股份有限公司 | Diesel engine water pump control system and its control method |
| 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 |
| US11035368B2 (en) | 2016-05-31 | 2021-06-15 | Fluid Handling Llc | Pump control design toolbox technique for variable speed pumping applications |
| CN106089675A (en) * | 2016-08-01 | 2016-11-09 | 南京腾图节能科技有限公司 | A kind of portable pump energy consumption assessment instrument |
| CN106089675B (en) * | 2016-08-01 | 2018-08-24 | 南京腾图节能科技有限公司 | A kind of portable pump energy consumption assessment instrument |
| CN107327398A (en) * | 2017-08-30 | 2017-11-07 | 安徽天达网络科技有限公司 | A kind of Computer Automatic Test System for pump performance |
| CN113623193A (en) * | 2021-08-10 | 2021-11-09 | 浙江大学湖州研究院 | Variable frequency pump running state monitoring system and monitoring method thereof |
| CN113915094A (en) * | 2021-09-23 | 2022-01-11 | 广州市昕恒泵业制造有限公司 | Control system of internal combustion engine pump set |
| CN113915094B (en) * | 2021-09-23 | 2022-05-13 | 广州市昕恒泵业制造有限公司 | Control system of internal combustion engine pump set |
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