CN206581340U - Many frequency-changing control systems - Google Patents
Many frequency-changing control systems Download PDFInfo
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- CN206581340U CN206581340U CN201621487265.XU CN201621487265U CN206581340U CN 206581340 U CN206581340 U CN 206581340U CN 201621487265 U CN201621487265 U CN 201621487265U CN 206581340 U CN206581340 U CN 206581340U
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Abstract
Many frequency-changing control systems, are related to a kind of control system of water pump.In at present, the frequency fluctuation of Large Copacity constant pressure water supply system it is big, easily cause siphon pressure unstable, produce water hammer effect.The utility model includes integral type variable-frequency motor, water pump nonshared control unit, communication device, sampling module and the display module being connected with the special control of water pump；CAN communication and multichannel 485 are communicated the configuration of water pump nonshared control unit all the way, and water pump nonshared control unit realizes man-machine interaction by connecting the one or more in mobile phone, computer, flat board, touch-screen；Water pump nonshared control unit connects sensor by sampling module and obtains pressure, flow and temperature to feed back current system conditions, and water pump nonshared control unit is compared after computing according to the signal after pressure value, flow value and temperature value calculation process with setting controls the work of integral type variable-frequency motor to realize constant pressure water supply control.The technical program reduces disturbance by the integral type variable-frequency motor cooperating of many, it is to avoid produce water hammer effect.
Description
Technical field
The utility model is related to a kind of control system of water pump, especially many frequency-changing control systems.
Background technology
In water resource and electric energy gradually epoch in short supply, save water and energy turns into the important master for building sustainable development society
Topic.Frequency Converted, using pipe network water pressure as setup parameter, by control the output frequency of frequency converter so as to
The rotating speed of pump motor is automatically adjusted, realizes that pipe network water pressure closed loop is adjusted, makes water system automatic constant in the pressure value of setting.
According to the size of water consumption, the speed governing of the quantity and control frequency converter of water pump to water pump is controlled by control system, to realize perseverance
Pressure supplies water.Frequency conversion speed adjusting has electric motor starting and braked steadily, without water hammer effect, the low feature of noise.Together
When improve the stability and reliability of water system.
Current Frequency conversion speed adjusting at home and abroad, on the handoff technique of frequency conversion and power frequency, mostly using master
Circuit concatenates the reduced-voltage starting method of soft initiator.The hydraulic pressure closed-loop control in, present in Large Copacity constant pressure water supply system
Problem and variable-frequency power sources are not solved at all with the stable switching problem of power frequency supply undisturbed.And frequency fluctuation is big,
Easily cause siphon pressure unstable, produce water hammer effect.Therefore, awaiting further research improves the property of constant pressure water supply system
Can, and reduce the cost of water management system.
Utility model content
The technical problems to be solved in the utility model and propose technical assignment be to prior art carry out improve with
Improve there is provided many frequency-changing control systems, to reach the purpose of siphon pressure stabilization.Therefore, the utility model takes following technology
Scheme.
The utility model includes integral type variable-frequency motor, water pump nonshared control unit, the communication being connected with the special control of water pump
Device, sampling module and display module；CAN communication and multichannel 485 are communicated the configuration of water pump nonshared control unit all the way, and water pump is special
With controller man-machine interaction is realized by connecting the one or more in mobile phone, computer, flat board, touch-screen；The special control of water pump
Device connects sensor acquisition pressure, flow and temperature to feed back current system conditions, water pump nonshared control unit by sampling module
Control integral type variable-frequency electric after computing is compared according to the signal after pressure value, flow value and temperature value calculation process with setting
Constant pressure water supply control, the frequency converter that described integral type variable-frequency motor includes motor, set with motor integral are realized in machine work；It is many
Frequency-changing control system includes many integral type variable-frequency motors and at least one water pump nonshared control unit；One water pump nonshared control unit
It is connected by communication with many integral type variable-frequency motors, or multiple water pump nonshared control units and many integral type variable-frequency motor communication phases
Even.The technical program reduces disturbance by the integral type variable-frequency motor cooperating of many, it is to avoid produce water hammer effect.
As further improving and supplementing to above-mentioned technical proposal, it is special that the utility model also includes following supplementary technology
Levy.
Further, between multiple water pump nonshared control units using the Flying Master methods in Canopen agreements come
It is determined that current master control, other master controls are then in stand-by state after standby main control unit finds that current master control is out of order, standby master
Control can restart Flying Master methods to determine new main control unit, and water pump nonshared control unit is communicated by RS485 and controlled
Integral type variable-frequency motor processed.
Further, described sensor is including being used to feed back the pressure sensor of real-time pressure, feeding back real-time traffic
Flow sensor, feed back real time temperature temperature sensor, water pump nonshared control unit according to pressure sensor, flow sensor,
The information realization of temperature sensor collection is to the constant pressure of fluid, constant current, thermostatic control.
Further, described sampling module is powered by CAN, and CAN is powered by water pump nonshared control unit, when having
Bus power source is in parallel during multiple water pump nonshared control units, and one of water pump nonshared control unit failure does not influence sampling module work
Make；Multiple water pump nonshared control unit power supplys are being linked into bus power source front end equipped with diode to prevent wire current from falling
Fill.
Further, CAN communication is used between water pump nonshared control unit, after main control module is powered off, the node is in floating
State, it is to avoid other communication apparatus in bus are impacted；Bus enters row address setting automatically, according to pump group system bus
Series system, is realized using address autoincrement mode.
Further, sampling module gathers all kinds of input datas and output control signal, and it is anti-that sampling module receives sensor
After the information of feedback, these data are actively sent in Can buses, all water pump nonshared control units can receive these simultaneously
Data are to realize data sharing.
Further, water pump nonshared control unit is communicated by 485 communication interfaces and integral type variable-frequency motor；Described water pump
Nonshared control unit is provided with remote monitoring module, and communication module includes GPRS module, bluetooth module and/or wi-fi modules；Long-range prison
Control module realizes the upgrading of remote monitoring module and the soft reparation of failure by GPRS and/or wi-fi modes.
Mobile phone, flat board, computer are realized by bluetooth and system and communicated, and realize that near radio is monitored.
Beneficial effect：The technical program reduces disturbance by the integral type variable-frequency motor cooperating of many, it is to avoid produce
Water hammer effect.And full range Isobarically Control frequency fluctuation in the technical program use, pressure, flow, temperature control are constant；Using one
Body formula variable-frequency motor, complete machine assembly and adjustment is convenient, small product size greatly reduces；Complete machine water proof and dust proof, degree of protection reaches IP55
More than；Man-machine interaction is simple and convenient;Reduce cost;Product reliability is high.
Brief description of the drawings
Fig. 1 is the system diagram of this hair.
Fig. 2 is total line chart of the present utility model.
Fig. 3 is the utility model pressure or flow and pump quantity and revolution speed graph of a relation.
Fig. 4 is the utility model control flow exemplary plot
Embodiment
The technical solution of the utility model is described in further detail below in conjunction with Figure of description.
As shown in Figure 1, 2, the utility model is by integral type variable-frequency motor, water pump nonshared control unit, GPRS module, bluetooth mould
Block, sampling module, display module composition, water pump nonshared control unit configure 3 tunnels 485 and communicate GAN bus communications all the way.System passes through
The real-time pressure of the sensor feedbacks such as pressure, flow, temperature, flow, temperature are realized to the constant pressure of fluid, constant current, thermostatic control.
The integral type frequency control power device that wherein integral type variable-frequency motor is made up of motor plus frequency converter.
Water pump nonshared control unit is the control centre of many frequency-changing control systems, and the system allows multiple control centres
Exist and current master control is determined using the Flying Master methods in Canopen agreements between water pump nonshared control units, its
His master control is then in stand-by state after standby main control unit finds that current master control is out of order, and standby master control can restart
Flying Master methods determine that new main control unit water pumps nonshared control unit passes through RS485 Communication Control integral type frequency conversions
Motor.There is during multiple water pump nonshared control units each water pump nonshared control unit to automatically switch master slave relation in system.Multiple water pumps
Nonshared control unit constitutes pump group controller.
To reduce influence of the power-off to sampling module, sampling module is powered by CAN.CAN is by the special control of water pump
Device processed is powered, and when there is multiple water pump nonshared control units, bus source current is in parallel, when one of water pump nonshared control unit failure
When, it also will not be influence sampling module work, improve the stability of work.Multiple water pump nonshared control unit power supplys are being linked into always
Line power supply front end is equipped with a diode, to prevent wire current from pouring in down a chimney.
To avoid using CAN communication between the influence after main control module power-off to other equipment, water pump nonshared control unit, when
After main control module power-off, this node can be in floating state, and buses will not be impacted to the communication apparatus of other in bus certainly
Move into row address setting, according to pump group system bus series system, realized using address autoincrement mode.
For the property of the stabilization of realizing work, many frequency-changing control systems comprise at least the integral type variable-frequency electric of one and the above
Machine and the special constant pressure water supply controller of one or more water pumps.
To realize the reliability of work, the special constant pressure water supply controller of water pump is realized by 485 with integral type variable-frequency motor
Communication.
For convenience of the renewal of system, system can realize remote monitoring and software upgrading and failure by GPRS, wi-fi mode
It is soft to repair.
The special constant pressure water supply controller of water pump is MODBUS agreements with integral type variable-frequency motor communications protocol.
For convenience of control, system can be controlled by terminal, and terminal can be mobile phone, computer, flat board, touch display screen
Deng；Mobile phone is realized by bluetooth and system and communicated, and realizes that near radio is monitored.
To reduce cost, and improve the reliability of work.The outer of each water pump nonshared control unit is realized by sampling module
Portion's gathered data it is shared,
The utility model is a kind of typical Automatic Constant-pressure Water Supplying System, by water pump nonshared control unit to 1 or many
Pump is controlled, and water pump operation is driven by integral type variable-frequency motor.Controlled quentity controlled variable is flow, pressure etc..Water pump nonshared control unit
Integral type variable-frequency motor is outputed signal to by MODBUS and drives water pump.Water pump nonshared control unit controls one according to water requirements
The rotating speed and operation quantity of formula variable-frequency motor.
The system is controlled to run by water pump nonshared control unit, passes through the pressure transmitter and flow on outfall sewer
Pressure and flow non-electric charge quantity signalling are converted to 4 ~ 20mA or 0 ~ 10V weak electric signals by sensor in real time, are input to system control single
Metadata sampling module, signal be compared after water pump nonshared control unit calculation process with the signal of setting calculate it is optimal
Operating condition parameter and water pump operation number of units, integral type variable-frequency motor is given by the logic control instruction that exports of water pump nonshared control unit
The output speed of controlling pump.
Control system by water pump nonshared control unit by integral type variable-frequency motor control water pump rotating speed with adjust hydraulic pressure or
Flow, according to the difference of pressure, flow, the rotating speed of water pump nonshared control unit regulation integral type variable-frequency motor is different.Water pump is special
When controller detects the presence of the demand of higher capacity, water pump nonshared control unit will improve integral type frequency conversion by MODBUS controls
Motor speed, when this demand can not be still met when reaching 95% rotating speed and differing more with desired value, keeps current one
Formula variable-frequency motor rotating speed simultaneously starts next integral type or two variable-frequency motors, after pump is started, and water pump nonshared control unit will be logical
Cross the integral type variable-frequency motor that newly puts under MODBUS controls and will proceed regulation, so circulation since minimum frequency until
Reach system water supply requirement;When water pump nonshared control unit detects capacity excess, then run time most long integral type is reduced
Variable-frequency motor rotating speed, when still can not meet this demand when reaching minimum speed, stops integral type variable-frequency motor operation before being taken in
And start to reduce next run time most long integral type variable-frequency motor rotating speed, so circulation until reaching that system water supply will
Ask.When stopping all integral type variable-frequency motors, system will enter sleep pattern, to keep the pressure or flow of water system same
When protection water system safety, reach energy-saving effect.
Parameter when water pump nonshared control unit is monitored and controlled includes the first parameter group, the second parameter group, the 3rd ginseng
Array, the first described parameter group is used for the running status of monitoring system；Second parameter group is used for the information of dispatching from the factory of inquiry system；
3rd parameter group is used for the operational factor of control system.
The state parameter of wherein the first parameter group includes：Whether historical failure information, motor output current, motor online,
Motor peak power output at various speeds, working time, PIM module temperature, analog or digital control mode, motor rotation
Turn direction, motor maximum (top) speed, motor operation speed；The information of dispatching from the factory of second parameter group includes：Motor Production Test date, motor sequence
Row number, controller version；The control operational factor of 3rd parameter group includes：Analog or digital control mode, motor direction of rotation,
Motor maximum (top) speed, motor operation speed, pid parameter regulation, acceleration and deceleration；Single parameter or multiple of the main frame to each parameter group
Parameter is monitored and controlled.
As shown in figure 3, the quantity and rotating speed and pressure or discharge relation of pump can be prestored in water pump nonshared control unit,
It is convenient to compare, calculate the speed judged to be lifted.
Control flow is further explained with a specific example below, as shown in figure 4, its specific regulating step is as follows：
1st, starting stage, 2 speeds of service of pump 90%；
2nd, flow is reduced, and 2 pumps slow down simultaneously；
3rd, flow detection function is started after control point is stable：Calculate two pump low-frequency operations and pump high-speed cruising which kind of
Energy consumption is low, and two pumps are low, maintains pump rotary speed；
4th, flow is reduced, and 2 pumps slow down simultaneously；
5th, flow detection function is started after control point is stable：Energy consumption is recalculated, a pump is low；System allows a pump to carry
Speed, another pump reduction of speed；
6th, control point value declines；Need two pumps；Return to original state estimation module；
7th, flow is reduced；2 pumps slow down simultaneously；
8th, in secondary startup flow detection control；One pump speed-raising, another pump reduction of speed；
9th, control point is stable；1 pump can meet requirement；Another pump soft stop；
10th, flow increase；#1 pumps raise speed；
11st, control point value declines, and a pump rotary speed reaches 100%；1 pump, which can not be met, requires #2 pump soft starts.
Many frequency-changing control systems shown in figure 1 above -4 are specific embodiment of the utility model, have embodied this reality
With new substantive distinguishing features and progress, under enlightenment of the present utility model, shape can be carried out to it according to actual use needs
Equivalent modifications in terms of shape, structure, this programme protection domain row.
Claims (8)
1. more than frequency-changing control system, it is characterised in that：Including integral type variable-frequency motor, water pump nonshared control unit, special with water pump
Control connected communication device, sampling module and display module；CAN is communicated and multichannel the configuration of water pump nonshared control unit all the way
485 communications, water pump nonshared control unit realizes man-machine friendship by connecting the one or more in mobile phone, computer, flat board, touch-screen
Mutually；Water pump nonshared control unit connects sensor by sampling module and obtains pressure, flow and temperature to feed back current system conditions,
Water pump nonshared control unit is compared after computing according to the signal after pressure value, flow value and temperature value calculation process with setting and controlled
Constant pressure water supply control is realized in integral type variable-frequency motor work processed, and described integral type variable-frequency motor includes motor and motor integral
The frequency converter of setting；Many frequency-changing control systems include many integral type variable-frequency motors and at least one water pump nonshared control unit；One
Individual water pump nonshared control unit is connected by communication with many integral type variable-frequency motors, or multiple water pump nonshared control units and many integral types
Variable-frequency motor is connected by communication.
2. many frequency-changing control systems according to claim 1, it is characterised in that：Used between multiple water pump nonshared control units
Flying Master methods in Canopen agreements determine current master control, and other master controls are then in stand-by state when standby
After main control unit finds that current master control is out of order, standby master control can restart Flying Master methods to determine new master
Unit is controlled, water pump nonshared control unit passes through RS485 Communication Control integral type variable-frequency motors.
3. many frequency-changing control systems according to claim 1, it is characterised in that：Described sensor includes being used to feed back reality
When pressure pressure sensor, feed back the flow sensor of real-time traffic, feed back the temperature sensor of real time temperature, water pump is special
The information realization that controller is gathered according to pressure sensor, flow sensor, temperature sensor is to the constant pressure of fluid, constant current, perseverance
Temperature control system.
4. many frequency-changing control systems according to claim 1, it is characterised in that：Described sampling module is supplied by CAN
Electricity, CAN is powered by water pump nonshared control unit, and when there is multiple water pump nonshared control units, bus power source is in parallel, one of them
Water pump nonshared control unit failure, does not influence sampling module to work；Multiple water pump nonshared control unit power supplys are being linked into bus power source
It is furnished with a diode to prevent wire current from pouring in down a chimney in front end.
5. many frequency-changing control systems according to claim 4, it is characterised in that：It is logical using CAN between water pump nonshared control unit
News, a water pump nonshared control unit is a node, after main control module is powered off, coupled this section of water pump nonshared control unit
Point is in floating state, it is to avoid other communication apparatus in bus are impacted；Bus enters row address setting automatically, according to pump
Group system bus series system, is realized using address autoincrement mode.
6. many frequency-changing control systems according to claim 4, it is characterised in that：Sampling module gather all kinds of input datas and
Output control signal, sampling module is received after the information of sensor feedback, and these data are actively sent in Can buses, institute
There is water pump nonshared control unit can be while receiving these data to realize data sharing.
7. many frequency-changing control systems according to claim 1, it is characterised in that：Water pump nonshared control unit passes through 485 communications
Interface is communicated with integral type variable-frequency motor；Described water pump nonshared control unit is provided with remote monitoring module, and communication module includes
GPRS module, bluetooth module and/or wi-fi modules；Remote monitoring module realizes long-range prison by GPRS and/or wi-fi modes
Control the upgrading and the soft reparation of failure of module.
8. many frequency-changing control systems according to claim 7, it is characterised in that：Mobile phone, flat board, computer are by bluetooth with being
System realizes communication, realizes that near radio is monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621487265.XU CN206581340U (en) | 2016-12-31 | 2016-12-31 | Many frequency-changing control systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621487265.XU CN206581340U (en) | 2016-12-31 | 2016-12-31 | Many frequency-changing control systems |
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| CN206581340U true CN206581340U (en) | 2017-10-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894977A (en) * | 2016-12-31 | 2017-06-27 | 卧龙电气集团股份有限公司 | Many frequency-changing control systems and control method |
| CN109327165A (en) * | 2018-10-30 | 2019-02-12 | 格力电器（武汉）有限公司 | Control system, method and centralized controller |
| CN110685323A (en) * | 2019-09-02 | 2020-01-14 | 广州市白云泵业集团有限公司 | Variable-frequency water supply method |
-
2016
- 2016-12-31 CN CN201621487265.XU patent/CN206581340U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894977A (en) * | 2016-12-31 | 2017-06-27 | 卧龙电气集团股份有限公司 | Many frequency-changing control systems and control method |
| CN106894977B (en) * | 2016-12-31 | 2020-02-21 | 卧龙电气驱动集团股份有限公司 | Multi-frequency conversion control system and control method |
| CN109327165A (en) * | 2018-10-30 | 2019-02-12 | 格力电器（武汉）有限公司 | Control system, method and centralized controller |
| CN110685323A (en) * | 2019-09-02 | 2020-01-14 | 广州市白云泵业集团有限公司 | Variable-frequency water supply method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Co-patentee after: Wolong Electrical Group Hangzhou Research Institute Co., Ltd. Patentee after: Wolong Electric Drive Group Co., Ltd. Address before: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Co-patentee before: Wolong Electrical Group Hangzhou Research Institute Co., Ltd. Patentee before: Wolong Electric Group Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200331 Address after: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Patentee after: WOLONG ELECTRIC GROUP Co.,Ltd. Address before: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Co-patentee before: WOLONG ELECTRICAL GROUP HANGZHOU RESEARCH INSTITUTE Co.,Ltd. Patentee before: WOLONG ELECTRIC GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |