CN106088246A - A kind of intelligent pump control system - Google Patents
A kind of intelligent pump control system Download PDFInfo
- Publication number
- CN106088246A CN106088246A CN201610644796.3A CN201610644796A CN106088246A CN 106088246 A CN106088246 A CN 106088246A CN 201610644796 A CN201610644796 A CN 201610644796A CN 106088246 A CN106088246 A CN 106088246A
- Authority
- CN
- China
- Prior art keywords
- control motor
- frequency
- binding post
- control system
- motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
- E03B11/16—Adaptations of devices for putting pumping plants in and out of operation, e.g. automatic control devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of intelligent pump control system, including: frequency-variable controller, pressure transducer and the binding post that multiple electric motors and motor become one, the frequency-variable controller of each motor is connected to transmitter by signal bus.The pump group controller of the present invention uses modularized design, on the one hand improve standardization level, on the other hand the electric elements such as transmitter, frequency-variable controller and binding post are integrated on motor, eliminate the independent water pump control cabinet of routine, reduce control system cost, save installing space；Signal bus transmission control signal is used between each controller；Power supply uses binding post the most in parallel, and connection is simple.
Description
Technical field
The present invention relates to a kind of intelligent pump control system, particularly the intelligent pump control system used by secondary water supply equipment.
Background technology
Secondary water supply equipment is that one directly couples with municipal network water supply, connects on the basis of city planting ductwork residual compression
Laminate and supply water and guarantee that municipal ductwork pressure is not less than the secondary pressurized water supply system setting pressure.Secondary water supply equipment is the most sharp
With ductwork pressure, system lock, stop water pollution once again, be the new type pressurized constant-current stabilizer of high rise building water supply design.Two
Secondary water work typically uses the variable frequency pump group system that 2-6 platform water pump forms.Variable frequency pump group system be widely used in secondary to
In wetting system system: on the one hand variable frequency pump group system is according to water supply system to flow and the demand of lift, passes through sensor feedback
Signal controls water pump start and stop quantity and the rotating speed of regulation water pump automatically so that water work more energy-conserving and environment-protective；On the other hand
Variable frequency pump group system be provided with communication function for realizing condition monitoring.Current this kind of variable frequency pump group system is typically by solely
Vertical switch board realizes, and is primarily present both sides problem: one is that standardization level is low, different customer demands is used difference
Configuration, autgmentability is poor；Two is switch board electrical equipment configuration complexity, and switch board volume is big.
For the problems referred to above, the pump group controller of the intelligent pump control system of the present invention uses modularized design, controller
Being directly integrated on pump motor: on the one hand, the intelligent pump control system of the present invention uses modularized design, improves standardization
Degree；On the other hand the electric elements that transmitter, controller and binding post, chopper etc. are attached are integrated on motor, remove
Conventional independent water pump control cabinet, reduces cost, has saved installing space.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of intelligent pump control system, comprising:
One main control motor, and at least one from control motor, described main control motor with described in multiple stage from control motor all make
For the water pump operation that prime mover driven is corresponding；
Described main control motor passes sequentially through frequency-variable controller, chopper and binding post and is connected to power supply；
Pass sequentially through frequency-variable controller, chopper, binding post and power line from control motor described in First and be connected to institute
State the binding post of main control motor；
Pass sequentially through frequency-variable controller, chopper, binding post and power line from control motor described in next to be connected to
From the binding post of control motor described in one；
Also include transmitter, the pressure transducer that described transmitter is connected in pipe network by holding wire port；
Described transmitter is respectively connecting to described in described main control motor and multiple stage from control by signal bus and bus port
The frequency-variable controller of motor.
Wherein, described main control motor is integration-in-one structure with corresponding frequency-variable controller, chopper and binding post.
Wherein, described is integration-in-one structure from controlling motor with corresponding frequency-variable controller, chopper and binding post.
Wherein, described transmitter and described main control motor are integration-in-one structure.
Further, described transmitter is additionally provided with reserved holding wire port.
Further, described main control motor and the frequency-variable controller from control motor are provided with reserved holding wire port use
In docking the holding wire port that described transmitter is reserved.
Wherein, described main control motor is connected to described power supply, described in First by water joint and power supply input
It is connected to described main control motor from control motor by water joint and described power line, depends between control motor described in remaining each
Secondary by water joint and described power line be connected to described in upper one from control motor
A kind of intelligent pump control system of the present invention, it uses modularized design, its frequency-variable controller, transmitter and auxiliary
Electrical equipment such as binding post, chopper etc. is integrated with motor.Signal bus transmission control is used between each frequency-variable controller
Signal processed.Power supply uses binding post the most in parallel, and connection is simple；Power supply passes through chopper to VFC
Device is powered, and open failure can overhaul water pump and not affect the confession of other water pumps in control system easily during trouble shooting
Electricity.Input and the output of the most each power supply are all configured with water joint, it is ensured that control system of water pump adapts to different application
Environment.Holding wire port has also been reserved, for the extension of system with meet different application demands in intelligent pump control system.
A kind of intelligent pump control system of the present invention is for comprising the motor-driven water pump parallel running of 2-6 platform in systems
Time to system implement control.Control to water pump system, currently mainly uses frequency-variable controller, the PID within frequency-variable controller
Controller is by running frequency conversion motor and controlling the speed of motor according to demand and regulate the rotating speed of water pump, thus to water pump system stream
Amount and pressure are adjusted.
When the setting pressure that the ductwork pressure of water pump system needs less than user, frequency-variable controller raises water pump automatically
Rotating speed is to meet system pressure requirements, if main control motor rotating speed reaches maximum limit rotating speed, ductwork pressure is still below user
The setting pressure needed, water pump is driven through bus and signal is passed to other in system from control water pump regulate its rotating speed,
Until water pump system pressure meets sets pressure.And when in intelligent pump control system, water pump runs with minimum frequency, system pressure
Power sets pressure still greater than user, and control system is shut down allowing the water pump started recently.If a pressure be detected that too high time do not have
Other water pump being currently running, when front pump will be directed into sleep pattern.
A kind of intelligent pump control system operational mode of the present invention is divided into automatically and manually, it is simple to debugging or fault diagnosis
And analysis.Intelligent pump control system can arrange sensor parameters easily, controls parameter, and system protection parameter.Additionally intelligence
Energy pump control system is provided with checks current control system fault or water system fault message and historical failure information etc.
Warning message function.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described.
Fig. 1 is intelligent pump control system principle schematic of the present invention.
In figure, numeral represents:
1. power supply inputs 2. water joint 3. binding posts
4. chopper 5. water joint 6. frequency-variable controller
7. bus port 8. holding wire port 9. transmitter
10. main control motor 11. signal bus 12. power line
13. water joint 14. binding post 15. choppers
16. bus port 17. frequency-variable controllers 18. are from control motor
19. water joint 20. power line 21. water joints
22. binding post 23. chopper 24. water joints
25. bus port 26. frequency-variable controllers 27. are from control motor
28. pressure transducer 29. holding wire port 30. holding wire ports
31. holding wire port 32. bus port 33. holding wire ports
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe wholely.
As a example by the intelligent pump control system comprising three water pumps, Fig. 1 is intelligent pump control system principle of the present invention signal
Figure, as it can be seen, the intelligent pump control system of the present invention specifically includes: power supply input 1, water joint 2, binding post 3, open circuit
Device 4, water joint 5, frequency-variable controller 6, bus port 7, holding wire port 8, transmitter 9, main control motor 10, signal bus
11, power line 12, water joint 13, binding post 14, chopper 15, bus port 16, frequency-variable controller 17, from control motor
18, water joint 19, power line 20, water joint 21, binding post 22, chopper 23, water joint 24, bus port 25,
Frequency-variable controller 26, from controlling motor 27, pressure transducer 28, holding wire port 29, holding wire port 30, holding wire port 31,
Bus port 32, holding wire port 33.
Electrical network is connected with binding post 3 by water joint 2 by power supply input 1, and main control motor is given through chopper 4 in a road
The frequency-variable controller 6 of 10 is powered, and another road is given in pump group system by water joint 13 by power line 12 through water joint 5
Next water pump is powered.In like manner the power supply through water joint 13 is connected with binding post 14, a road through chopper 15 give from
The frequency-variable controller 17 of control motor 18 is powered, and another road power supply is given by water joint 21 by power line 20 through water joint 19
Next water pump in pump group system is powered.Power supply one tunnel being connected with binding post 22 by water joint 21 is through chopper
23 power to the frequency-variable controller 26 from control motor 27, and next water pump in pump group system is given through water joint 24 in another road
Controller is powered；By that analogy.Intelligent pump control system is typically made up of 2-6 platform water pump controller, and the present embodiment lists three
Illustrating of platform water pump, i.e. comprises a main control motor 10 and two from control motor 18 and 27.Power supply uses terminals
Son is the most in parallel, and connection is simple；Power supply is powered to frequency-variable controller by chopper, permissible during trouble shooting
Open failure is overhauled water pump and is not affected the power supply of other water pumps in control system easily.Water joint 2,5,13,19,21 and
The effect of 24 is the classification of waterproof improving intelligent pump control system, and degree of protection meets IP55 requirement.
Including the master driver that driver is intelligent pump control system of transmitter 9, remaining is auxiliary driver.Pressure sensing
Device 28 passes to the transmitter 9 of master driver by 8 signals of holding wire port.Signal bus 11 is by bus port 32, total
Line cap 16 communicates with the controller in intelligent pump control system with bus port 25 connection.Pressure signal is by transmitter 9
By bus port 7 output pressure signal after reason, and through signal bus 11 be connected to bus port 32 and by pressure signal transmission to
Frequency-variable controller 6, frequency-variable controller 6 drives main control motor 10 to be started by instruction, stop, accelerating or run slowly.In system
The control signal that received from signal bus 11 by bus port 16 of frequency-variable controller 17 drive from control motor 18 by instruction
Start, stop, accelerating or run slowly.In like manner, the frequency-variable controller 26 in system receives self-confident by bus port 25
The control signal of number bus 11 drives and is started from control motor 27 by instruction, stop, accelerating or run slowly.In view of different
Application and the extensibility of system, reserved holding wire port 29,30,31 and 33, and these reserved holding wire ports can connect
Connect sensor input signal (such as flow meter signal, temperature signal, vacuum meter signal etc.) and output control signal (such as Valve controlling
Signal).
Intelligent pump control system regulates the rotating speed of water pump automatically according to the signal that pressure transducer 28 feeds back.When water system
Ductwork pressure p1 need less than user setting pressure p time, frequency-variable controller 6 is automatically adjusted the rotating speed of main control motor 10 with full
Pedal system pressure requirements, if motor speed reaches maximum restriction rotating speed, ductwork pressure p1 is still below the setting that user needs
Pressure p, transmitter 9 is passed to frequency-variable controller 17 or 26 regulation by its bus port 7 by 11 signals of bus, and it drives
The rotating speed from control motor 18 or 27 of water pump, until water supply system output pressure p2=p；As p2 ＞ p, frequency-variable controller 6
Regulation main control motor 10 runs slowly；As p2 ＜ p, water pump Accelerating running；As p2=p, water supply system carries out automatic nothing
Detect with water, then autostop；As p2 ＜ p, water pump resumes operation automatically；When the setting pressure p needed is less than entrance pressure
During power p1, system does not starts, by municipal water supply pipe network directly to user's pipe network water supply.
The maximum range of sensor in system can be set easily by intelligent pump control system, set pressure, sensing
Device feedback kind, motor drive direction, PID parameters, sampling period, sleep function, dormancy relevant parameter equal proportion integration
Differential parameter, water shortage protective switch, excessive low water level protection restart time delay, water detects the functional parameters such as alarm for high voltage setting value, and
The Protection parameters such as the protection of overload protection electric current, overvoltage stall protection, current limliting, input phase failure, output open-phase protection.Intelligent pump controls
System can also arrange systematic parameter, such as function, system start-up Auto Power Ons such as motor mode setting, electricity, working time, states
The function setting such as function, motor numbering, motor-locking and display etc..
This intelligent pump control system is provided with the system failure or water system fault message and historical failure information etc.
The query function of warning message, city planting ductwork are cut off the water defencive function, and low discharge sleep mode and having a power failure is not cut off the water.Work as community
During power failure, city planting ductwork continue to supply water to low district user, after equipment restores electricity, automatically start, recover stopping of normal water supply
Electricity continues to supply water.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (7)
1. an intelligent pump control system, it is characterised in that including:
One main control motor, and at least one from control motor, described main control motor with described in multiple stage from control motor all as former
Motivation drives corresponding water pump operation；
Described main control motor passes sequentially through frequency-variable controller, chopper and binding post and is connected to power supply；
Pass sequentially through frequency-variable controller, chopper, binding post and power line from control motor described in First and be connected to described master
The binding post of control motor；
Pass sequentially through frequency-variable controller, chopper, binding post and power line from control motor described in next and be connected to Shang Yitai
The described binding post from control motor；
Also include transmitter, the pressure transducer that described transmitter is connected in pipe network by holding wire port；
Described transmitter is respectively connecting to described in described main control motor and multiple stage from control motor by signal bus and bus port
Frequency-variable controller.
A kind of intelligent pump control system the most according to claim 1, it is characterised in that described main control motor and corresponding change
Frequently controller, chopper and binding post are integration-in-one structure.
A kind of intelligent pump control system the most according to claim 1, it is characterised in that described from control motor and corresponding change
Frequently controller, chopper and binding post are integration-in-one structure.
A kind of intelligent pump control system the most according to claim 1, it is characterised in that described transmitter and described master control electricity
Machine is integration-in-one structure.
5. according to a kind of intelligent pump control system described in any one of claim 1-4, it is characterised in that described transmitter also sets
It is equipped with reserved holding wire port.
A kind of intelligent pump control system the most according to claim 5, it is characterised in that described main control motor and from control motor
Frequency-variable controller be provided with reserved holding wire port for docking the holding wire port that described transmitter is reserved.
A kind of intelligent pump control system the most according to claim 2, it is characterised in that described main control motor is connect by waterproof
Head and power supply input are connected to described power supply, are connected by water joint and described power line from control motor described in First
To described main control motor, between control motor, pass sequentially through water joint described in remaining each and described power line is connected to one
From control motor described in platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644796.3A CN106088246B (en) | 2016-08-09 | 2016-08-09 | A kind of intelligence pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644796.3A CN106088246B (en) | 2016-08-09 | 2016-08-09 | A kind of intelligence pump control system |
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| Publication Number | Publication Date |
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| CN106088246A true CN106088246A (en) | 2016-11-09 |
| CN106088246B CN106088246B (en) | 2018-08-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610644796.3A Active CN106088246B (en) | 2016-08-09 | 2016-08-09 | A kind of intelligence pump control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107156088A (en) * | 2017-06-28 | 2017-09-15 | 宿州市埇桥区时村镇农业技术推广站 | A kind of vehicle-mounted pesticide spraying device of electro-tricycle |
| CN112160948A (en) * | 2020-09-09 | 2021-01-01 | 南京晨光集团有限责任公司 | Linear hydraulic driving system based on quick response of intelligent pump |
| US11703051B2 (en) | 2019-02-12 | 2023-07-18 | Terzo Power Systems, LLC | Valveless hydraulic system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3918246A1 (en) * | 1989-06-05 | 1990-12-06 | Eggs Elektrotechnik | Water pressure intensifier system - incorporates single pump with adjustable capacity |
| RU2195533C2 (en) * | 2001-03-20 | 2002-12-27 | Курский государственный технический университет | Water supply system |
| CN202706104U (en) * | 2012-07-16 | 2013-01-30 | 南京康卓环境科技有限公司 | Automatic variable-frequency constant-pressure water supply controller |
| CN203146291U (en) * | 2013-01-12 | 2013-08-21 | 辽宁赛沃斯节能技术有限公司 | Energy-saving control system of dual-mode speed regulation type water feed pump unit |
| CN203498903U (en) * | 2013-09-24 | 2014-03-26 | 广州三晶电气有限公司 | Intelligent constant pressure water supply device |
| CN203878671U (en) * | 2014-06-06 | 2014-10-15 | 丹东川宇电气智能控制系统有限公司 | PLC intelligent-control multi-frequency-converter pressure-adjustment water supply device |
| CN105672396A (en) * | 2016-01-28 | 2016-06-15 | 宁波九荣环保科技有限公司 | Constant-pressure water supply control system with multiple parallel pumps and control method |
| CN205935069U (en) * | 2016-08-09 | 2017-02-08 | 池泉 | Intelligence pump control system |
-
2016
- 2016-08-09 CN CN201610644796.3A patent/CN106088246B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3918246A1 (en) * | 1989-06-05 | 1990-12-06 | Eggs Elektrotechnik | Water pressure intensifier system - incorporates single pump with adjustable capacity |
| RU2195533C2 (en) * | 2001-03-20 | 2002-12-27 | Курский государственный технический университет | Water supply system |
| CN202706104U (en) * | 2012-07-16 | 2013-01-30 | 南京康卓环境科技有限公司 | Automatic variable-frequency constant-pressure water supply controller |
| CN203146291U (en) * | 2013-01-12 | 2013-08-21 | 辽宁赛沃斯节能技术有限公司 | Energy-saving control system of dual-mode speed regulation type water feed pump unit |
| CN203498903U (en) * | 2013-09-24 | 2014-03-26 | 广州三晶电气有限公司 | Intelligent constant pressure water supply device |
| CN203878671U (en) * | 2014-06-06 | 2014-10-15 | 丹东川宇电气智能控制系统有限公司 | PLC intelligent-control multi-frequency-converter pressure-adjustment water supply device |
| CN105672396A (en) * | 2016-01-28 | 2016-06-15 | 宁波九荣环保科技有限公司 | Constant-pressure water supply control system with multiple parallel pumps and control method |
| CN205935069U (en) * | 2016-08-09 | 2017-02-08 | 池泉 | Intelligence pump control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107156088A (en) * | 2017-06-28 | 2017-09-15 | 宿州市埇桥区时村镇农业技术推广站 | A kind of vehicle-mounted pesticide spraying device of electro-tricycle |
| US11703051B2 (en) | 2019-02-12 | 2023-07-18 | Terzo Power Systems, LLC | Valveless hydraulic system |
| CN112160948A (en) * | 2020-09-09 | 2021-01-01 | 南京晨光集团有限责任公司 | Linear hydraulic driving system based on quick response of intelligent pump |
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| Publication number | Publication date |
|---|---|
| CN106088246B (en) | 2018-08-28 |
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Effective date of registration: 20210119 Address after: 201702 north side of 3rd floor, building 2, 6355 Yinggang East Road, Qingpu District, Shanghai Patentee after: SHANGHAI SHANGHAN AUTOMATION TECHNOLOGY Co.,Ltd. Address before: 201706 Shanghai Panda Machinery (Group) Co., Ltd., 6355 Yinggang East Road, Qingpu District, Shanghai Patentee before: Chi Quan |