CN202969451U - Intelligent variable-frequency constant-pressure water supply system - Google Patents
Intelligent variable-frequency constant-pressure water supply system Download PDFInfo
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- CN202969451U CN202969451U CN 201220708134 CN201220708134U CN202969451U CN 202969451 U CN202969451 U CN 202969451U CN 201220708134 CN201220708134 CN 201220708134 CN 201220708134 U CN201220708134 U CN 201220708134U CN 202969451 U CN202969451 U CN 202969451U
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- water supply
- programmable logic
- logic controller
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Abstract
The utility model discloses an intelligent variable-frequency constant-pressure water supply system. According to the intelligent variable-frequency constant-pressure water supply system, a control cabinet comprises a touch display screen, a frequency converter, a programmable logic controller and a power control circuit, wherein the touch display screen and the frequency converter are connected with the programmable logic controller, the frequency converter, the programmable logic controller and a water pump are connected with the power control circuit, an inflow pressure transmitter is arranged on a transverse inflow pipe, an outflow pressure transmitter is arranged on a transverse outflow pipe, the inflow pressure transmitter and the outflow pressure transmitter are connected with the programmable logic controller, a pressure tank is arranged at the water outlet end of the transverse outflow pipe, and a pipe network assembly is communicated with a water inlet pipe and a water outlet pipe. According to the intelligent variable-frequency constant-pressure water supply system, the programmable logic controller is used for controlling the whole water supply system, the water supply system is high in intelligent degree, simple to operate and stable in comprehensive performance, the water pump works efficiently, and the energy-saving effect is significant, secondary pollution is prevented, the water supply quality is improved, the start-up and shut-down impact forces are reduced, the service life of a water supply device is greatly prolonged, and the overhead expenditure is reduced.
Description
Technical field
The utility model relates to constant pressure water supply systems technology field, is specially a kind of intelligent variable-frequency constant pressure water supply system.
Background technology
In recent years along with the modernization construction in city, highrise building is more and more higher, the high-floor feedwater system surpasses the scope that municipal water supply can reach already, therefore utilize water pump to realize that the equipment of high-floor feedwater arises at the historic moment, the present way of supplying water that adopts mainly contains cistern water supply system and non-negative pressure water service system dual mode; Though but adopt which kind of mode, the stability of water supply and validity are vital, because these two parameters will directly have influence on the effect of user's water.
No matter be cistern water supply system or non-negative pressure water service system, all need a cover safety, reliable, directly perceived, simple constant pressure water supply system; Practical constant pressure water supply system, be all often to adopt PLC controls discrete magnitude, Frequency Converter Control frequency-changing pressure stabilizing in the market; Perhaps the PID controller is controlled the running frequency dual mode of frequency converter, and not only system's each several part state is not directly perceived, and the operation that partial parameters is revised is also comparatively complicated, hommization not.
Adopt the mode of cistern water supply, the mode that liquid-level switch is set in water tank is used in control for liquid level often, the problems such as the not only unusual trouble of regulating tank liquid level restriction, and the material of liquid-level switch, mounting means all easily cause secondary pollution to the water of water tank.
Along with the energy-saving and cost-reducing proposition that requires, constant pressure water supply equipment just must possess low discharge and shut down energy-conservation function, and the realization of this function monitors the frequency of frequency converter often, determines that then certain frequency values of determining is the sign of low discharge.But all there is the situation of hydraulic pressure shakiness in many old towns, laminates without negative pressure under the mode of water supply in employing, will have influence on effective execution of this energy-conservation frequency values.
The utility model content
The technical problem that the utility model solves is to provide a kind of intelligent variable-frequency constant pressure water supply system, its intelligent degree is high, provide interactive interface by touch display screen and PLC controls system's each several part state and for the user, reach and control water system pressure, reduce the starting of pump station number of times, realize safe, reliable, the constant pressure water supply of water system, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
The intelligent variable-frequency constant pressure water supply system comprises switch board, water pump, intake pressure transmitter, discharge pressure transmitter, air pressure tank, pipe network assembly; Wherein, switch board comprises touch display screen, frequency converter, programmable logic controller (PLC), power control circuit, and touch display screen, frequency converter are connected with programmable logic controller (PLC), and frequency converter, programmable logic controller (PLC), water pump are connected with power control circuit; Be provided with the intake pressure transmitter on transverse water inlet pipe, be provided with the discharge pressure transmitter on the water outlet transverse tube, the intake pressure transmitter is connected with programmable logic controller (PLC) with the discharge pressure transmitter, and air pressure jar setting is in water outlet transverse tube water side, and the pipe network assembly is communicated with water inlet pipe and outlet pipe.
In the utility model, intake pressure transmitter and discharge pressure transmitter be used for intake real-time pressure value with water outlet converts the 4-20mA signal to and sends programmable logic controller (PLC) to; The program of programmable logic controller (PLC) is by logical operation and PID computing, analyzing and processing is carried out in water inlet and discharge pressure value, finally provide the various parts on off control, and then participation control procedure, and provide the frequency values signal for frequency converter, frequency converter is according to the instruction of plc, the Circuit tuning frequency, controls pump rotary speed; Finally make the output pressure of water system be stabilized in desired value.
In the utility model, programmable logic controller program is designed with water pump operation accumulative total duration calculation function, and each the shutdown duration of runs of restarting two water pumps of front contrast selects the short water pump of accumulated running time as the preferential water pump that starts; The running duration that makes water pump is balance more, and the corrosion situation of avoiding the long-term shutdown of single water pump to cause effectively extends application life of supply equipment.
In the utility model, in programmable logic controller program, the filtration of different modes is carried out in water inlet and discharge pressure signal, make signal reduced greatly by the degree of frequency converter interference; Simultaneously water outlet transverse tube water side arranges air pressure tank, and the tensioning by the air pressure tank inner septum and loosen to cushion the variation of hydraulic pressure is conducive to improve the precision of water supply lift.
In the utility model, touch display screen is arranged on the switch board panel, checks system mode and parameters for the user.Wherein can comprise by the operational factor of touch display screen set device: whether pressure of supply water desired value, each parameter of PID, the low limits value of pressure of supply water, the high limits value of pressure of supply water, intake pressure lower limit value, water pump normally wait; Displayable device parameter comprises: intake pressure currency, discharge pressure currency, water pump operation frequency values, fault message and solution thereof etc.
In the utility model, also be provided with four indicator lamps and a knob on the switch board panel, be respectively power supply indicator, alarm indicator lamp, run indicator, dormancy indicator lamp and manually/stop/the automatic switchover knob.
In the utility model; the problem that causes the anhydrous automatic shutdown function of equipment to lose efficacy for water inlet pipe hydraulic pressure shakiness; set up the intake pressure transmitter and read in real time the real-time condition of water inlet pipe hydraulic pressure; design water inlet pipe hydraulic pressure segmentation control mode; namely according to different interval water feeding pressure, set corresponding value for the controlled frequency of anhydrous autostop, increased the intelligent degree of equipment; the area of hydraulic pressure shakiness make the part city planting ductwork water yield sufficient, even also can normally be used.
Beneficial effect: the utility model adopts the whole water system of PLC controls, and its intelligent degree is high, easy and simple to handle, and combination property is more stable, automatically selects the short water pump of accumulated running time as the preferential water pump that starts; The running duration that makes water pump is balance more, the corrosion situation of avoiding the long-term shutdown of single water pump to cause, and the efficient energy saving in running effect of water pump is remarkable; Stop secondary pollution, improved water supply quality, reduced the start and stop impact force, greatly improve the application life of supply equipment, reduce the regular expenses spending.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to the intelligent variable-frequency constant pressure water supply system of Fig. 1, comprise touch display screen 1, frequency converter 2, programmable logic controller (PLC) 3, power control circuit 4, water pump 5, intake pressure transmitter 6, discharge pressure transmitter 7, air pressure tank 8, pipe network assembly 9; Wherein, touch display screen 1, frequency converter 2 are connected with programmable logic controller (PLC) 3, and frequency converter 2, programmable logic controller (PLC) 3, water pump 5 are connected with power control circuit 4; Be provided with intake pressure transmitter 6 on transverse water inlet pipe, be provided with discharge pressure transmitter 7 on the water outlet transverse tube, intake pressure transmitter 6 is connected with the discharge pressure transmitter and is connected with programmable logic controller (PLC) 3, and air pressure tank 8 is arranged on water outlet transverse tube water side, and pipe network assembly 9 is communicated with water inlet pipe and outlet pipes.
In the present embodiment, intake pressure transmitter 6 and discharge pressure transmitter 7 be used for intake real-time pressure value with water outlet converts the 4-20mA signal to and sends programmable logic controller (PLC) 3 to; The program of programmable logic controller (PLC) 3 is by logical operation and PID computing, analyzing and processing is carried out in water inlet and discharge pressure value, finally provide the various parts on off control, and then participation control procedure, and provide the frequency values signal for frequency converter 2, frequency converter 2 is according to the instruction of plc, the Circuit tuning frequency, controls water pump 5 rotating speeds; Finally make the output pressure of water system be stabilized in desired value.
In the present embodiment, programmable logic controller (PLC) 3 programmings have water pump operation accumulative total duration calculation function, and each the shutdown duration of runs of restarting two water pumps of front contrast selects the short water pump of accumulated running time as the preferential water pump that starts; The running duration that makes water pump is balance more, and the corrosion situation of avoiding the long-term shutdown of single water pump to cause effectively extends application life of supply equipment.
In the present embodiment, in programmable logic controller (PLC) 3 programs, the filtration of different modes is carried out in water inlet and discharge pressure signal, the degree that makes signal disturbed by frequency converter 2 is reduced greatly; Simultaneously water outlet transverse tube water side arranges air pressure tank 8, and the tensioning by air pressure tank 8 inner septums and loosen to cushion the variation of hydraulic pressure is conducive to improve the precision of water supply lift.
In the present embodiment, switch board comprises touch display screen 1, frequency converter 2, programmable logic controller (PLC) 3, power control circuit 4, and touch display screen 1 is arranged on the switch board panel, checks system mode and parameters for the user.Wherein can comprise by the operational factor of touch display screen 1 set device: whether pressure of supply water desired value, each parameter of PID, the low limits value of pressure of supply water, the high limits value of pressure of supply water, intake pressure lower limit value, water pump normally wait; Displayable device parameter comprises: intake pressure currency, discharge pressure currency, water pump operation frequency values, fault message and solution thereof etc.
In the present embodiment, also being provided with four indicator lamps and a knob on the switch board panel, is respectively power supply indicator, alarm indicator lamp, run indicator, dormancy indicator lamp and manually/stop/the automatic switchover knob.
In the present embodiment; the problem that causes the anhydrous automatic shutdown function of equipment to lose efficacy for water inlet pipe hydraulic pressure shakiness; set up intake pressure transmitter 6 and read in real time the real-time condition of water inlet pipe hydraulic pressure; design water inlet pipe hydraulic pressure segmentation control mode; namely according to different interval water feeding pressure, set corresponding value for the controlled frequency of anhydrous autostop, increased the intelligent degree of equipment; the area of hydraulic pressure shakiness make the part city planting ductwork water yield sufficient, even also can normally be used.
In the present embodiment, when system was in manual operation state, the user can manually boot operation to corresponding water pump by the manual operation zone at touch display screen 1 interface.
In the present embodiment, in water inlet higher than the water supply requirement value, and during without other faults, operation automatically; At the lower limit of discharge pressure value lower than program setting, the setting of programmable logic controller (PLC) 3 Program Users, beginning to carry out PID calculates and water pump switching logical calculated, final is that frequency converter 2 transmits frequency signal, for outer logic circuit provides corresponding operating, control corresponding motor rotation frequency, the pressure height reduces frequency, pressure is low improves frequency, finally makes the water outlet lift be stabilized in the value scope of customer requirements.
Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the intelligent variable-frequency constant pressure water supply system, comprise switch board, water pump, intake pressure transmitter, discharge pressure transmitter, air pressure tank, pipe network assembly; It is characterized in that, switch board comprises touch display screen, frequency converter, programmable logic controller (PLC), power control circuit, touch display screen, frequency converter are connected with programmable logic controller (PLC), and frequency converter, programmable logic controller (PLC), water pump are connected with power control circuit; Be provided with the intake pressure transmitter on transverse water inlet pipe, be provided with the discharge pressure transmitter on the water outlet transverse tube, the intake pressure transmitter is connected with programmable logic controller (PLC) with the discharge pressure transmitter, and air pressure jar setting is in water outlet transverse tube water side, and the pipe network assembly is communicated with water inlet pipe and outlet pipe.
2. intelligent variable-frequency constant pressure water supply system according to claim 1, is characterized in that, touch display screen is arranged on the switch board panel.
3. intelligent variable-frequency constant pressure water supply system according to claim 1, is characterized in that, also is provided with four indicator lamps and a knob on the switch board panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708134 CN202969451U (en) | 2012-12-20 | 2012-12-20 | Intelligent variable-frequency constant-pressure water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708134 CN202969451U (en) | 2012-12-20 | 2012-12-20 | Intelligent variable-frequency constant-pressure water supply system |
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| CN202969451U true CN202969451U (en) | 2013-06-05 |
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| CN 201220708134 Expired - Fee Related CN202969451U (en) | 2012-12-20 | 2012-12-20 | Intelligent variable-frequency constant-pressure water supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013334A (en) * | 2016-07-04 | 2016-10-12 | 重庆成峰二次供水设备有限责任公司 | Smart stay water supply control system |
| CN108277846A (en) * | 2018-03-20 | 2018-07-13 | 昆明理工大学 | A kind of integration adjustable constant-pressure water supply installation and its control method |
-
2012
- 2012-12-20 CN CN 201220708134 patent/CN202969451U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013334A (en) * | 2016-07-04 | 2016-10-12 | 重庆成峰二次供水设备有限责任公司 | Smart stay water supply control system |
| CN108277846A (en) * | 2018-03-20 | 2018-07-13 | 昆明理工大学 | A kind of integration adjustable constant-pressure water supply installation and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGSHA NANFANG YUHANG ENVIRONMENTAL ENGINEERING Free format text: FORMER OWNER: ZHUZHOU NANFANG SPACE NAVIGATION INDUSTRY CO., LTD. Effective date: 20140411 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 412002 ZHUZHOU, HUNAN PROVINCE TO: 410000 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140411 Address after: 410000 C4 building, C block, Hexi hi tech Industrial Development Zone, Changsha, Hunan, Changsha, 5 Patentee after: CHANGSHA NANFANG AVIATION ENVIRONMENTAL ENGINEERING CO., LTD. Address before: Dong Jia Duan Jianguo Road 412002 in Hunan province Zhuzhou city Lusong District No. 1 Patentee before: Zhuzhou Nanfang Aviation Environmental Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |