CN205530462U - One drags many types of intelligent variable frequency control cabinet and contains its constant pressure water supply system - Google Patents
One drags many types of intelligent variable frequency control cabinet and contains its constant pressure water supply system Download PDFInfo
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- CN205530462U CN205530462U CN201620082730.5U CN201620082730U CN205530462U CN 205530462 U CN205530462 U CN 205530462U CN 201620082730 U CN201620082730 U CN 201620082730U CN 205530462 U CN205530462 U CN 205530462U
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Abstract
The utility model discloses an one drags many types of intelligent variable frequency control cabinet, include PLC, a plurality of intelligent motor protector who is used for a converter of being connected with many water pumps and is used for being connected one to one with the water pump, PLC passes through the net twine and connects converter and each intelligent motor protector respectively for acquire the operating data of motor, still include and monitor appearance and touch -sensitive screen through net twine and the electric power that PLC is connected. The utility model also discloses a constant pressure water supply system who contains above -mentioned variable frequency control cabinet and many water pumps, PLC goes out the water pressure condition according to water supply system and comes frequency conversion and the power frequency of control pump to open to stop, the utility model has the advantages of networking, intellectuality, simple structure, operation are stably, system's operation not influenced by the water pump trouble and the convenience is operated and the maintenance, be suitable for popularization and application.
Description
Technical field
The utility model relates to frequency-conversion control cabinet field, in particular it relates to a kind of one-to-multi-type intelligence becomes
Frequently switch board and the constant pressure water supply system containing it.
Background technology
The raising realized along with social development and people, energy-saving and emission-reduction are increasingly by the weight of people
Depending on, especially water supply aspect, how to ensure that saving the energy while system constant-pressure stable supplies water becomes
The emphasis of current research.
At present, the frequency-conversion control cabinet that on market, major part pump house constant pressure water supply system uses is all that " one drags
Many " type frequency-conversion control cabinet, so-called " one drag many " refers to a frequency converter independent dragging multiple water pump
In any one, ensure that a water pump is in converting operation state every time.Output increases when,
The number of units of power frequency operation water pump can be increased successively, otherwise, output reduces when, subtract successively
The number of units of few power frequency operation water pump.
But such one-to-multi-type frequency-conversion control cabinet and constant pressure water supply system have the following aspects
Problem:
One is that the many employings of equipment in frequency-conversion control cabinet currently on the market and constant pressure water supply system connect firmly
Line mode, internal system wiring is complicated, and the maintenance cost that once breaks down is high.It addition, scene sets
Standby ruuning situation and the setting of relevant parameter can only professional be carried out by computer connection PLC, this
Sample is the most extremely unfavorable for that site operation personnel grasps machine operation in time, is also unfavorable for maintenance personal
Maintenance.
Two are the frequency-conversion control cabinet on market and constant pressure water supply system does not accounts for water pump or frequency conversion mostly
How faults-tolerant control is capable of, once water pump or one of them appearance event of frequency converter when device breaks down
Barrier, whole system will directly not work, the water supply task in influence area.It addition, the change on market
Frequently switch board is typically to be provided with a Zi Dong MANUAL CONTROL mode selection, Mei Fashi to whole system
Now be accurate to certain water pump automatic control manual shutdown mode select, such water pump go wrong or
During maintenance, it is impossible to it is independently departed from operation automatically, thus affects the automatic operation of whole system.
As can be seen here, above-mentioned existing frequency-conversion control cabinet and constant pressure water supply system in structure and use,
Obviously still suffered from inconvenience and defect, and be urgently further improved.How to found a kind of structure
Simply, stable, do not affected by fault of water pump and convenient operation and the frequency-conversion control cabinet of maintenance and perseverance
Pressure water system, becomes the emphasis of current industry research.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, stable, no
The frequency-conversion control cabinet affected by fault of water pump and conveniently operate and keep in repair and Intelligent constant-voltage water system.
For solving above-mentioned technical problem, the utility model adopts the following technical scheme that
A kind of one-to-multi-type intelligent frequency-conversion switch board, including PLC, for be connected with multiple stage water pump one
Platform frequency converter and for multiple intelligent motor protectors of being connected one to one with water pump；
Described PLC connects frequency converter and each intelligent motor protector respectively by netting twine.
Further, the power monitoring instrumentation being connected by netting twine is also included with PLC.
Further, the touch-screen being connected by netting twine is also included with PLC.
Further, described power monitoring instrumentation, frequency converter and intelligent motor protector pass through a net
Line is connected with the RS485 interface of PLC, uses ModBus communication protocol, and described touch-screen passes through
Netting twine is connected on the RS232 interface of PLC.
Further, including that be connected with PLC, be responsible for every pump variable frequency start and stop contactor and
That be connected with PLC, control the contactor of every water pump power frequency start and stop；On the touch-screen being connected with PLC
It is provided with manually the running of every water pump, disables, automatically run select button, by described button control
PLC processed and then control contactor.
Further, contactor that be connected, that be responsible for frequency converter start and stop is also included with PLC.
Further, described contactor is A.C. contactor.
A kind of one-to-multi-type Intelligent constant-voltage water system, including above-mentioned frequency-conversion control cabinet, also includes many
Platform water pump, described multiple stage water pump is all connected with described frequency converter, and every water pump correspondence connects one
Intelligent motor protector；Described PLC controls the change of water pump according to water system discharge pressure situation
Frequency and power frequency start and stop.
Further, including: that be connected with described PLC, for detecting water system high water tank
Liquid level sensor；That be connected with described PLC, electronic for controlling the water inlet of water system water tank water intake
Valve and be connected with described PLC, for detecting the pressure sensing of water system outlet pipe pressure condition
Device.
Further, described water pump is 3-6 platform.
By using technique scheme, the utility model at least has the advantages that
1, the utility model have employed networking design, is set with the intelligence in frequency-conversion control cabinet by PLC
Standby (frequency converter, intelligent motor protector, power monitoring instrumentation) all networks, and PLC passes through network
The service data of these equipment of Overall Acquisition also controls it.Due to network sheerly light current content,
Mechanical be lost, service life is long, reliable and stable, thus ensure whole system possess high stability and
Reliability.It addition, network is the sustainer of whole system, PLC just may be used by a network communication line
To obtain all data of each equipment instrument, effectively each equipment can be carried out comprehensive monitoring and control
System, thus reach constant pressure water supply, energy-saving and cost-reducing control requirement.By the setting of networking, reduce
Part hardwire mode, internal system wiring is simple, it is easy to maintenance and maintenance cost are low.
2, the utility model introduces touch screen technology, further simplify hardware circuit, improve
System reliability, reliability, maintainability, safety and human factors and ease for operation, the field adjustable of switch board is again special without automatic control
The participation of industry personnel.The ruuning situation of field apparatus can embody on the touchscreen intuitively, operator
Member directly arranges technological parameter also dependent on on-site actual situations.Thus reach " the fool of execute-in-place
Change ".
3, the utility model arranges manually the running of every water pump on the touchscreen, disables, automatically transports
Row select button, by select button control PLC and then control contactor, can select every freely
Water pump is in the automatic method of operation or the manual method of operation or disables, when certain water pump breaks down or needs
When this water pump is individually overhauled, by shutdown mode can make easily this water pump from system thoroughly
Excise and discharge its Internet resources taken and system resource, do not interfere with the performance of whole system.
Below by drawings and Examples, the technical solution of the utility model is done and further retouches in detail
State.
Accompanying drawing explanation
Fig. 1 is the primary structure schematic diagram of one-to-multi-type Intelligent constant-voltage water system of the present utility model；
Fig. 2 is within one-to-multi-type intelligent frequency-conversion switch board of the present utility model and constant pressure water supply system
Network service schematic diagram；
Fig. 3 is the electrical schematic diagram of one-to-multi-type Intelligent constant-voltage water system of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that herein
Described preferred embodiment is merely to illustrate and explains the utility model, is not used to limit this practicality
Novel.
The present embodiment drags three type Intelligent constant-voltage water systems be used in community secondary booster pump station one
As a example by illustrate.
As it is shown in figure 1, one drags three type Intelligent constant-voltage water systems to include frequency-conversion control cabinet and three water pumps
(1# water pump M1,2# water pump M2,3# water pump M3).Frequency-conversion control cabinet includes PLC, a frequency conversion
Device ABB, 3 intelligent motor protectors；Frequency converter and three water pumps connect respectively, each intelligence
Motor protector and a water pump connect；PLC connects frequency converter and each Intelligent electric respectively by netting twine
Motivation protector, in order to obtain the service data of motor；PLC plays " neural in the entire system
Maincenter " effect, the frequency conversion of water pump can be controlled according to water system discharge pressure situation and power frequency opens
Stopping (such as can determine whether the start and stop priority of three water pumps), frequency converter and water pump play execution machine in systems
Structure effect, the instruction accepting PLC completes the purpose of constant pressure water supply.PLC just may be used by network communication line
To obtain all data of each equipment instrument, effectively each equipment can be carried out comprehensive monitoring and control
System, thus reach constant pressure water supply, energy-saving and cost-reducing control requirement.
Above-mentioned constant pressure water supply system also includes liquid level sensor, the water inlet electrically operated valve (figure being connected with PLC
Not shown in 1), pressure sensor.The water level of liquid level sensor detection water system water tank, by water
The liquid level information of case is converted to 4～20ma current analog signals, accesses PLC.Pressure sensor is installed on
On outlet conduit, detect pipeline discharge pressure, and be converted into 4～20ma current analog signals,
Access PLC.PLC, according to liquid level feedback value, controls the keying of water system water tank water intake electrically operated valve,
Guarantee that cistern water level will not overflow pond, also will not low water, meet normal water supply needs.PLC is according to water outlet
Pressure feedback value on pipeline controls the rate-adaptive pacemaker of frequency converter thus realizes the purpose of constant pressure water supply.
Shown in Fig. 1 Yu Fig. 2, above-mentioned frequency-conversion control cabinet also includes power monitoring instrumentation and touch-screen,
Power monitoring instrumentation, frequency converter and intelligent motor protector are connect by the RS485 of a netting twine and PLC
Mouth is connected, and uses ModBus communication protocol, so uses PLC just can read these intelligence
Status signal that equipment is detailed, operational factor, fault message etc. so that PLC preferably controls and protects
Protect equipment.Touch-screen is connected on the RS232 interface of PLC by netting twine, on the touchscreen can be direct
Observe that running status and the operational factor of relevant device, the manual switching equipment method of operation and control are each
Equipment operation etc., and relevant parameter etc. is set.
Shown in Fig. 1 and Fig. 3, the frequency-conversion control cabinet in above-mentioned constant pressure water supply system also includes and PLC
The A.C. contactor connected, totally 7, the effect of contactor KM1 is that " overlapping occurs in electrical network at the scene
Lock " or the frequency conversion tank power-off that causes of manual operation after when powering in the short time, prevent frequency converter from not having
Suddenly power in the case of fully powered-off and cause frequency converter failure；Contactor KM11～KM31 is responsible for control
The frequency conversion start and stop of water pump, contactor KM12～KM32 is responsible for controlling the power frequency start and stop of water pump.At touch-screen
On be provided with manually the running of every water pump, disable, automatically run select button, by described button
Control PLC and then control contactor KM11～KM31, KM12～KM32.Owing to every water pump all has hand
Move the method for operation and the automatic method of operation and disable mode, by every water pump on touch-screen
" manually run/disable/automatically " select button, every water pump can be selected freely to be in operation automatically
Mode or the manual method of operation or disable.Maybe need this water pump is carried out individually as certain water pump breaks down
During maintenance, this water pump can be made easily thoroughly to excise from system and discharge it by shutdown mode and take
Internet resources and system resource, do not interfere with the performance of whole system.
When system does not works, all contactors are in off-state, and water pump M1, M2 and M3 locate
In stopped status.When system electrification when, PLC sends instruction delays time to control contactor KM1 contact
Guan Bi, thus frequency converter time delay powers on.Now the pressure in pipeline is zero, if now exactly using
Family water use peak, after pressure sensor detects hydraulic pressure, after this signal is sent to PLC, PLC root
Analyze output signal according to this feedback pressure value, make the adhesive of KM11 contact, become by Control on Communication
Frequently device runs and provides the frequency of operation, and water pump M1 presses given speed operating then, and system enters single
Platform pump variable frequency duty, running speed is stepped up from low to high.Along with the operation of water pump M1,
Pressure on pipeline gradually rises, and this force value is fed back to PLC, PLC root by pressure sensor in real time
Adjust the output of frequency converter frequency in real time according to this value of feedback thus change motor speed, until it reaches be
The force value set of uniting is the most stable.
When motor speed is raised to the highest, if being still not reaching to the pipeline pressure of default, then PLC
Send instruction, the adhesive of KM22 contact, thus water pump M2 obtains electric operation, thus keeps a power frequency
Run the running status of another converting operation, until it reaches the force value of default.
Whereas if to evening, user's water consumption reduces, and pipeline feedback pressure exceedes default
Value, PLC will reduce the rate-adaptive pacemaker of frequency converter, when frequency converter drops to the frequency that we set,
Now system can be automatically stopped the water pump of power frequency operation, only keeps a variable frequency pump to run.If used
The when that the water yield being the least, the when that frequency conversion being in the operating of continuous low frequency, system will enter " dormancy " shape
State, until user's water consumption increases, " waking up up " system restarts operation.
When frequency conversion is broken down, PLC meeting automatic decision fault type, determine that this fault is by water pump
Extremely the frequency conversion fault caused or the fault of frequency converter own, the former system will record frequency converter event in this way
Automatically frequency converter failure, and another water pump of variable frequency starting is removed after barrier information；The latter then keeps in this way
Frequency converter failure state, power frequency startup water pump.
No matter water pump power frequency operation or at converting operation, control system all have overload, zero load, three
The basic defencive functions such as uneven, voltage is abnormal mutually, are protected by frequency converter during converting operation, power frequency
Time protected by intelligent motor protector, and concrete fault type is uploaded to PLC by communication.
The above be a complete make-up water pump as a example by water pump M1 motor starts diminishing pump follow
Ring, in real work, all water pumps are not fixed with converting operation mode all in equal standing, power frequency,
Circular order is not fixed, and the startup priority calculated by PLC completely and stopping priority determining,
The calculating of priority depends primarily on the accumulated running time of water pump, the most not only enhances system flexible
Property, more make can uniformly using of each water pump, strengthen the service life of water pump.
Above-described embodiment be only by one drag three types as a example by the introduction that carries out, actual pump can select 3-6
Platform.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, not
For limiting the utility model, although the utility model having been carried out specifically with reference to previous embodiment
Bright, for a person skilled in the art, it still can be to the technology described in previous embodiment
Scheme is modified, or wherein portion of techniques feature is carried out equivalent.All at the utility model
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within the protection domain of utility model.
Claims (10)
1. an one-to-multi-type intelligent frequency-conversion switch board, it is characterised in that include PLC, for many
A frequency converter that platform water pump connects and for multiple intelligent motors of being connected one to one with water pump
Protector；
Described PLC connects frequency converter and each intelligent motor protector respectively by netting twine.
One-to-multi-type intelligent frequency-conversion switch board the most according to claim 1, it is characterised in that
Also include the power monitoring instrumentation being connected by netting twine with PLC.
One-to-multi-type intelligent frequency-conversion switch board the most according to claim 1, it is characterised in that
Also include the touch-screen being connected by netting twine with PLC.
One-to-multi-type intelligent frequency-conversion switch board the most according to claim 1, it is characterised in that
Also include power monitoring instrumentation and touch-screen, described power monitoring instrumentation, frequency converter and intelligent motor protection
Device is connected with the RS485 interface of PLC by a netting twine, uses ModBus communication protocol, institute
State touch-screen to be connected on the RS232 interface of PLC by netting twine.
One-to-multi-type intelligent frequency-conversion switch board the most according to claim 3, it is characterised in that
Including that be connected with PLC, be responsible for the contactor of every pump variable frequency start and stop and be connected with PLC,
Control the contactor of every water pump power frequency start and stop；
It is provided with manually the running of every water pump on the touch-screen being connected with PLC, disables, automatically run
Select button, by described button control PLC and then control contactor.
One-to-multi-type intelligent frequency-conversion switch board the most according to claim 1, it is characterised in that
Also include contactor that be connected, that be responsible for frequency converter start and stop with PLC.
7., according to the one-to-multi-type intelligent frequency-conversion switch board described in claim 5 or 6, its feature exists
In, described contactor is A.C. contactor.
8. an one-to-multi-type Intelligent constant-voltage water system, it is characterised in that include claim 1-7
Frequency-conversion control cabinet described in any one, also includes multiple stage water pump, described multiple stage water pump all with described change
Frequently device connects, and every water pump correspondence connects an intelligent motor protector；
Described PLC controls frequency conversion and the power frequency start and stop of water pump according to water system discharge pressure situation.
One-to-multi-type Intelligent constant-voltage water system the most according to claim 8, it is characterised in that
Including:
That be connected with described PLC, for detecting the liquid level sensor of water system high water tank；
That be connected with described PLC, for control water system water tank water intake water inlet electrically operated valve and
That be connected with described PLC, for detecting the pressure sensing of water system outlet pipe pressure condition
Device.
One-to-multi-type Intelligent constant-voltage water system the most according to claim 8 or claim 9, its feature
Being, described water pump is 3-6 platform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082730.5U CN205530462U (en) | 2016-01-27 | 2016-01-27 | One drags many types of intelligent variable frequency control cabinet and contains its constant pressure water supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082730.5U CN205530462U (en) | 2016-01-27 | 2016-01-27 | One drags many types of intelligent variable frequency control cabinet and contains its constant pressure water supply system |
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| CN205530462U true CN205530462U (en) | 2016-08-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107450616A (en) * | 2017-09-04 | 2017-12-08 | 嘉兴奥拓迈讯自动化控制技术有限公司 | Supersonic liquid level detection Full-automatic drainage water drainage control system |
| CN107574862A (en) * | 2017-09-04 | 2018-01-12 | 嘉兴奥拓迈讯自动化控制技术有限公司 | With standby each other and roll-call pattern more pump control system of invariable pressure |
| CN113931261A (en) * | 2021-11-01 | 2022-01-14 | 河南慧水科技有限公司 | Common full-frequency-conversion water supply control cabinet |
| CN115263734A (en) * | 2022-07-26 | 2022-11-01 | 山东凯迪欧电气有限公司 | One-to-many intelligent device for variable frequency speed regulation energy-saving emission-reducing system |
-
2016
- 2016-01-27 CN CN201620082730.5U patent/CN205530462U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107450616A (en) * | 2017-09-04 | 2017-12-08 | 嘉兴奥拓迈讯自动化控制技术有限公司 | Supersonic liquid level detection Full-automatic drainage water drainage control system |
| CN107574862A (en) * | 2017-09-04 | 2018-01-12 | 嘉兴奥拓迈讯自动化控制技术有限公司 | With standby each other and roll-call pattern more pump control system of invariable pressure |
| CN107450616B (en) * | 2017-09-04 | 2021-04-16 | 嘉兴奥拓迈讯自动化控制技术有限公司 | Full-automatic drainage and waterlogging drainage control system for ultrasonic liquid level detection |
| CN113931261A (en) * | 2021-11-01 | 2022-01-14 | 河南慧水科技有限公司 | Common full-frequency-conversion water supply control cabinet |
| CN115263734A (en) * | 2022-07-26 | 2022-11-01 | 山东凯迪欧电气有限公司 | One-to-many intelligent device for variable frequency speed regulation energy-saving emission-reducing system |
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