CN201347566Y - Variable frequency constant-pressure water-supplying automatic control system - Google Patents
Variable frequency constant-pressure water-supplying automatic control system Download PDFInfo
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- CN201347566Y CN201347566Y CNU2008202055598U CN200820205559U CN201347566Y CN 201347566 Y CN201347566 Y CN 201347566Y CN U2008202055598 U CNU2008202055598 U CN U2008202055598U CN 200820205559 U CN200820205559 U CN 200820205559U CN 201347566 Y CN201347566 Y CN 201347566Y
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- water
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Abstract
The utility model discloses a variable-frequency constant-pressure water-supplying automatic control system, which comprises a water-supplying system, a control system and a water-delivery pipe. The water-supplying system comprises a main pump, a standby pump and a dormancy pump, the control system comprises a PLC controlling operation of the control system and a frequency converter which outputs frequency signals for the PLC and control rotating speed of a water pump motor. The water-supplying system is free of building a water tower, a high level cistern or an air tank on height, is simple in equipment and fine in control real-time, meets constant increased water-supplying requirements, is low in equipment investment and small in occupied area, and can reduce loading of buildings, can judge operation conditions of the water-supplying system according to the pressure of the system, and enables the system to be operated in the most reasonable state, thereby achieving the purpose of saving electricity energy and having wide application prospect.
Description
Technical field
The utility model relates to a kind of water system, particularly a kind of constant pressure water supply automatic control system.
Background technology
Traditional method of supplying water all is that the mode with water tank that is arranged on the higher position or water tower supplies water, the power of weighing again supplies water, its inner water storage, and supply water to lower position by the higher position with constant pressure of supply water, such method of supplying water need place on the roof of building building water tower or water tank, even so, in heavy construction, also usually can not satisfy the water supply requirement of least favorable water supply point, and be difficult to satisfy water requirements under the water demand amount increase situation, and be stored in water in water tower or the water tank and be easier to cause for the second time and pollute, the quality of water influenced, in addition, because water tower or water tank form very big heavy burden on the roof, increased the stressed of building structure, also overslaugh building attractive in appearance, and water tower or water tank must exceed several meters of the waters surface on the roof, when make building investment cycle long, expense is big, and difficult in maintenance.
Summary of the invention
For addressing the above problem, the purpose of this utility model be to provide a kind of install and easy to maintenance, the scope of application extensively, can effectively supply water and effectively improve the constant pressure water supply automatic control system of quality of water supply.
The utility model is that the technical scheme that its technical problem of solution is adopted is:
The constant pressure water supply automatic control system, the pipeline that comprises water system, control system and water delivery, described water system comprises main pump, stand by pump and dormancy pump, and described control system comprises the PLC of monitoring and control water system and to the frequency converter of PLC output frequency signal and control of pump motor speed.
Wherein, described water system comprises the switch main valve that is arranged at the pipeline water inlet, and main pump, stand by pump and dormancy pump entry and the outlet conduit of being connected parallel with one another respectively is provided with switch valve at the water intake end of main pump, stand by pump and dormancy pump, and the water side respectively is provided with flap valve.
Further improvement as such scheme, be provided with the pressure meter and the pressure transmitter of detected pressures at the water outlet end of pipeline, respectively be provided with the pressure switch of monitoring pressure at pipeline water inlet and delivery port, described pressure transmitter connects frequency converter, and input pressure signal gives frequency converter, and described pressure switch is controlled by PLC.
The beneficial effects of the utility model are:
1, automatic water supply system of the present utility model need not exceed construction water tower, high level cistern or gas tank, and its equipment is simple, and the control real-time is good, and can satisfy the continuous increase of water requirements.
2, equipment investment of the present utility model is few, and floor space is little, can alleviate the heavy burden of building, and installs, safeguards simple aspect.
3, the utility model can be differentiated the operation working condition of water system according to system pressure, makes system operate in the most rational state, reaches the purpose of saving electric energy.
4, the utility model can not cause pollute the second time of water quality, guarantees the quality that supplies water.Therefore becoming frequency constant pressure water supply automatic control system of the present utility model has wide application prospect.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is a system construction drawing of the present utility model;
Fig. 2 is a primary circuit of the present utility model circuit diagram;
Fig. 3 is a secondary circuit circuit diagram of the present utility model.
Fig. 4 is the PLC wiring diagram.
The specific embodiment
With reference to Fig. 1, constant pressure water supply automatic control system of the present utility model, the pipeline 4 that comprises water system, control system and water delivery, described water system comprises main pump 11, stand by pump 12 and dormancy pump 13, and described control system comprises the PLC programmable logic controller 2 of monitoring and control water system and to the frequency converter 3 of the motor speed of PLC programmable logic controller 2 output frequency signals and control of pump.
Wherein, frequency converter 3 is provided with the pressure of being put by rheostat, and by circuit alternating current 220V is become direct current 5V power supply supply pressure sensor.Pressure sensor is transformed into the correspondent voltage signal with the force value in the pipeline 4 and is transported to regulating circuit and converts the setpoint frequency current input terminal that frequency converter is received in current signal output to, constitutes a close loop negative feedback and controls.Frequency converter is according to the size of feedback signal automatically adjust output frequency and voltage magnitude, and the rotating speed of regulating pump motor is controlled the pressure in each pipeline 4, makes constant pressure in the pipeline 4 on the force value of setting, thereby reaches the purpose of the water supply of constant voltage.
As optimal way of the present utility model, described water system comprises the switch main valve 14 that is arranged at pipeline 4 water inlets, main pump 11, stand by pump 12 and dormancy pump 13 entry and the outlet conduits 4 of being connected parallel with one another, water intake end at main pump 11, stand by pump 12 and dormancy pump 13 respectively is provided with switch valve 19, and the water side respectively is provided with the flap valve 15 of anti-backflow.
Be provided with the pressure meter 16 and the pressure transmitter 18 of detected pressures at pipeline 4 water outlet ends; wherein; pressure transmitter 18 is a slide wire resistance; being used for pipeline pressure detects; pressure transmitter 18 is sent the variable signal of pressure of supply water into circuit; signal compares with the pressure signal that frequency converter 3 is set after treatment; draw optimum frequency; realize automatic constant-pressure; in addition; pressure transmitter 18 also can play superpressure or the under-voltage defencive function of doing, and helps the good protection of system, the application life of further improving water system equipment.
Respectively be provided with pressure switch 17 at pipeline 4 water inlets and delivery port, pressure switch 17 is used for the pressure detection of pipeline entry and exit, and under the situation of pump intake lack of water and delivery port overvoltage, pressure switch 17 will be sent signal, the water pump group is stopped operating, avoid water pump idle running to cause damage.
Described pressure transmitter 18 connects frequency converters 3, and input pressure signal gives frequency converter 3, and described pressure switch 17 is by 2 controls of PLC programmable logic controller.
Wherein, the preferred PLC programmable logic controller 2 of the utility model is the FX2N-48M of Mitsubishi; Described frequency converter 3 is the MF-22K-380 of Mitsubishi.
Be respectively primary circuit wiring diagram, secondary circuit wiring diagram and the PLC wiring diagram of the utility model preferred implementation with reference to Fig. 2～Fig. 4, wherein, KM1, KM2 are the relay of control M1 for the switch of the motor M1 of control main pump 11, FR1; KM3, KM4 are the relay of control M2 for the switch of the motor M2 of control stand by pump 12, FR2; KM5, KM6 are the switch of the motor M3 of control dormancy pump 13, and FR3 is the relay of control M3; Wherein, KM1 is control main pump 11 converting operations, and KM2 is control main pump 11 power frequency operations, and KM3 is control stand by pump 12 converting operations, and KM4 is control stand by pump 12 power frequency operations, and KM5 is control dormancy pump 13 power frequency operations.
The Y1 of PLC programmable logic controller 2, Y2, Y3, Y4, Y5 connect Y1, Y2, Y3, Y4, the Y5 of secondary circuit respectively, form control loop by 2 controls of PLC programmable logic controller, in addition, PLC programmable logic controller 2 passes through port x 3, X4, X5, the X6 difference setting pressure upper limit, low pressure limit, water level detecting and frequency converter monitoring, and connects the anhydrous indication of outside demonstration formation respectively, frequency converter warning indication, overvoltage indication and under-voltage indication by port Y6, Y7, Y10, Y11.
Workflow of the present utility model is:
One, regulate water supply pattern automatically: this control model is that the size according to pipeline 4 pressure and user's water supply volume automatically adjusts, with the purpose of the constant pressure water supply of guaranteeing system.
Its course of work is: the 2 internal processes work of PLC programmable logic controller, export to Y1 relay FR1, make KM1 get, the motor M1 of frequency converter 3 and main pump 11 connects by KM1, make motor M1 get, main pump 11 soft starts provide living water use for the user, can automatically adjust according to user's water supply volume.
When user's water increases, feedback signal by pressure transmitter 18 feeds back to frequency converter 3, the output frequency of frequency converter 3 is risen, and the rotating speed of main pump 11 also rises with the rising of frequency converter 3 output frequencies, thereby the output discharge that increases main pump 11 is with the increase of the water supply volume that satisfies the user.
When the running frequency of main pump 11 has reached rated value, but pipeline 4 pressure still continue to descend, the frequency of frequency converter 3 reaches signal of output output to PLC programmable logic controller 2,2 timing of control PLC programmable logic controller, if main pump 11 is after moving 5 seconds under the frequency of rated value, PLC programmable logic controller 2 cuts off Y1 output, make the KM1 dead electricity, output Y2 driving KM2 gets electric, and main pump 11 is switched position power frequency operations, and the frequency of frequency converter 3 reduces to zero rapidly.PLC programmable logic controller 2 drives KM3 soft start stand by pump and drops into converting operation, and working with main pump 11 increases the water use peak that output satisfies the user.
When user's water supply volume reduced, the pressure of pipeline 4 rose, and feedback signal reduces the output frequency of frequency converter 3, and the speed of the water pump of frequency converter 3 operations is reduced, and reduced the output of water pump.If when main pump 11 power frequency operations and stand by pump 12 converting operations, when the output frequency of frequency converter 3 is reduced to the lower frequency limit of frequency converter 3 work, and the pressure of pipeline 4 is when still constantly rising, when having arrived the operating pressure value of pressure switch 17 settings, pressure switch 17 actions make 2 timing of PLC programmable logic controller after 5 seconds to signal of PLC programmable logic controller 2 inputs, PLC programmable logic controller 2 cuts off Y2 output and makes the KM2 dead electricity, deactivate just cutting off, and supply water by stand by pump 12 converting operations at the main pump 11 of power frequency operation.If the running frequency of stand by pump 12 converting operations is reduced to the lower frequency limit of frequency converter 3, the pressure of pipeline 4 also constantly rises, when pressure rose to the setting value of pressure switch 17 once more, pressure switch 17 actions stopped output by PLC control Y3, made the KM3 dead electricity cut off stand by pump fortune 12 row.
If converting operation starts continuously, stops three times in 10 seconds, represent that promptly user's water supply volume is smaller, PLC programmable logic controller 2 soft start dormancy immediately pump 13 satisfies the less water supply volume of user by dormancy pump 13.When the upper limiting frequency of dormancy pump 13 converting operations at frequency converter 3, but still can not satisfy user's water demand the time, PLC is out of service with dormancy pump 13 automatically, the water supply that puts into operation of soft start main pump 11 or stand by pump 12.
If when user's water supply volume is zero, the sleep state will be gone into by system, as long as descend at pipeline 4 pressure, system can change to wake up from sleep and put into operation.Can either satisfy user's water like this, also can realize saving the purpose of electric energy.
Two, water supply pattern at times: promptly for the water supply pattern of the water requirements that satisfies different time sections.The set time period is:
Zero morning～7:00; (first frequency)
7:00～11:00; (second frequency)
11:00～14:00; (the 3rd frequency)
14:00～17:00; (second frequency)
17:00～24:00。(the 4th frequency)
The frequency value corresponding that is respectively satisfied required output each time period is set in the frequency converter 3, selects various combination can obtain different running frequencies by different switch, and working barrel be to should there being different rotating speeds, thereby obtains corresponding output.
The timing function of this program is realized that by PLC programmable logic controller 2 when arriving the time value of certain setting, PLC will control corresponding output automatically and select correspondent frequency output.
The Y7 correspondence be that the second frequency of frequency converter is set: 2DF;
The Y10 correspondence be the 3rd frequency setting: 3DF.
When Y7, Y10 did not export, what then obtain was first frequency;
Y7 has output and Y10 when not exporting, and what then obtain is second frequency;
Y10 has output and Y7 when not exporting, and what then obtain is the 3rd frequency;
When Y7, Y10 had output, what then obtain was the 4th frequency.
In zero 7:00 period in morning, whether Y7 and Y10 export, and working barrel then moves with first frequency;
In 7:00～11:00 and 14:00～17:00 period, Y7 has output and not output of Y10, and working barrel then moves with second frequency;
In 11:00～14:00 period, Y10 has output and not output of Y7, and working barrel then moves with the 3rd frequency;
In 17:00～24:00 period, Y7 and Y10 have output, and working barrel then moves with the 4th frequency.
Three, manual mode: when frequency converter broke down, in order not influence user's water, system can adopt the pump group power frequency operation work that manually boots, for the user continues to supply water.
Press outer button, control PLC programmable logic controller 2 drives the KM2 coil and gets, main pump 11 gets electric startup power frequency operation, for the user provides living water use, if when still not satisfying user's water supply volume during main pump 11 power frequency operations, press the corresponding button, stand by pump 12 also dropped into power frequency operation, main pump 11 is worked into the user supplies water, to satisfy user's water demand amount with stand by pump 12.
If main pump 11 and stand by pump 12 all drop into power frequency operation, when user's water supply volume descends, the pressure of pipeline 4 rises, when arriving the upper pressure limit value that pressure switch 17 sets, pressure switch 17 actions, control PLC stops Y4 output, make the KM4 dead electricity, cut off stand by pump, out of service, supply water by the main pump isolated operation.
If when main pump 11 works independently, when the pressure of pipeline 4 also constantly rose, when pipeline 4 pressure arrived the set upper pressure limit value of pressure switch once more, Y2 stopped output, makes the KM2 dead electricity, cuts off main pump 11, water supply out of service.In user's water supply volume hour, can start dormancy pump 13 by the corresponding button and supply water.
Four, regularly change pumping function: because stand by pump does not come into operation and the dead phenomenon of becoming rusty for a long time, to improve the comprehensive utilization ratio of equipment in order preventing effectively, to reduce maintenance cost, can set up the regularly function of switch operating pump by PLC programmable logic controller 2.
When main pump 11 or 12 16 hours working times of accumulative total of stand by pump,, must under sleep state, carry out at main pump 11 or stand by pump 12 during switchable pump in order not influence user's water.
Claims (4)
1, constant pressure water supply automatic control system, the pipeline (4) that comprises water system, control system and water delivery, it is characterized in that: described water system comprises main pump (11), stand by pump (12) and dormancy pump (13), and described control system comprises the PLC (2) of control system operation and to the frequency converter (3) of PLC (2) output frequency signal and control of pump motor speed.
2, constant pressure water supply automatic control system according to claim 1, it is characterized in that: described water system comprises the switch main valve (14) that is arranged at pipeline (4) water inlet, main pump (11), stand by pump (12) and dormancy pump (13) connecting pipe parallel with one another (4), water intake end at main pump (11), stand by pump (12) and dormancy pump (13) respectively is provided with switch valve (19), and the water side respectively is provided with flap valve (15).
3, constant pressure water supply automatic control system according to claim 1 and 2, it is characterized in that: the pressure meter (16) and the pressure transmitter (18) that are provided with detected pressures at pipeline (4) water outlet end, respectively be provided with the pressure switch (17) of monitoring pressure at pipeline (4) water inlet and delivery port, described pressure transmitter (18) connects and input pressure signal is given frequency converter (3), and described pressure switch (17) is controlled by PLC (2).
3, constant pressure water supply automatic control system according to claim 1 and 2 is characterized in that: described PLC (2) is the FX2N-48M of Mitsubishi.
4, constant pressure water supply automatic control system according to claim 1 and 2 is characterized in that: described frequency converter (3) is the MF-22K-380 of Mitsubishi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202055598U CN201347566Y (en) | 2008-12-18 | 2008-12-18 | Variable frequency constant-pressure water-supplying automatic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202055598U CN201347566Y (en) | 2008-12-18 | 2008-12-18 | Variable frequency constant-pressure water-supplying automatic control system |
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| CNU2008202055598U Expired - Fee Related CN201347566Y (en) | 2008-12-18 | 2008-12-18 | Variable frequency constant-pressure water-supplying automatic control system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354236A (en) * | 2011-07-28 | 2012-02-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Automatic adjusting device of test water level and flow of hydraulic depression tank and control method thereof |
| CN104018547A (en) * | 2014-06-12 | 2014-09-03 | 云南大红山管道有限公司 | High-altitude, high-lift, high-pressure pipeline and long-distance water conveying device and method |
| CN106149805A (en) * | 2016-08-24 | 2016-11-23 | 重庆成峰二次供水设备有限责任公司 | A kind of micro power is without negative pressure stabilizing compensation system |
| CN106152250A (en) * | 2016-08-16 | 2016-11-23 | 河南柴油机重工有限责任公司 | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN112709284A (en) * | 2020-12-29 | 2021-04-27 | 四川红华实业有限公司 | Water supply control method for centrifugal plant |
| CN112728617A (en) * | 2021-02-05 | 2021-04-30 | 广州大学城能源发展有限公司 | Intelligent heat supply system |
| CN112963730A (en) * | 2021-03-25 | 2021-06-15 | 厚普清洁能源股份有限公司 | Pressure-stabilizing constant-flow control system and method for LNG multi-immersed pump marine filling sledge |
| CN114321724A (en) * | 2021-11-25 | 2022-04-12 | 中国恩菲工程技术有限公司 | Lime milk conveying method and device |
| CN114607580A (en) * | 2022-03-22 | 2022-06-10 | 鸿鲲新能源(海南)有限公司 | Oil well pressurization liquid injection system |
| CN116591265A (en) * | 2023-06-07 | 2023-08-15 | 无锡申海供水设备制造有限公司 | Intelligent control method and system for non-negative pressure secondary water supply equipment |
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2008
- 2008-12-18 CN CNU2008202055598U patent/CN201347566Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354236A (en) * | 2011-07-28 | 2012-02-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Automatic adjusting device of test water level and flow of hydraulic depression tank and control method thereof |
| CN102354236B (en) * | 2011-07-28 | 2013-07-17 | 水利部交通运输部国家能源局南京水利科学研究院 | Automatic adjusting device of test water level and flow of hydraulic depression tank and control method thereof |
| CN104018547A (en) * | 2014-06-12 | 2014-09-03 | 云南大红山管道有限公司 | High-altitude, high-lift, high-pressure pipeline and long-distance water conveying device and method |
| CN104018547B (en) * | 2014-06-12 | 2015-12-30 | 云南大红山管道有限公司 | A kind of High aititude high-lift pressure piping long distance water transfer device and water-conveying method |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN106152250A (en) * | 2016-08-16 | 2016-11-23 | 河南柴油机重工有限责任公司 | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means |
| CN106149805A (en) * | 2016-08-24 | 2016-11-23 | 重庆成峰二次供水设备有限责任公司 | A kind of micro power is without negative pressure stabilizing compensation system |
| CN112709284A (en) * | 2020-12-29 | 2021-04-27 | 四川红华实业有限公司 | Water supply control method for centrifugal plant |
| CN112728617A (en) * | 2021-02-05 | 2021-04-30 | 广州大学城能源发展有限公司 | Intelligent heat supply system |
| CN112963730A (en) * | 2021-03-25 | 2021-06-15 | 厚普清洁能源股份有限公司 | Pressure-stabilizing constant-flow control system and method for LNG multi-immersed pump marine filling sledge |
| CN114321724A (en) * | 2021-11-25 | 2022-04-12 | 中国恩菲工程技术有限公司 | Lime milk conveying method and device |
| CN114607580A (en) * | 2022-03-22 | 2022-06-10 | 鸿鲲新能源(海南)有限公司 | Oil well pressurization liquid injection system |
| CN116591265A (en) * | 2023-06-07 | 2023-08-15 | 无锡申海供水设备制造有限公司 | Intelligent control method and system for non-negative pressure secondary water supply equipment |
| CN116591265B (en) * | 2023-06-07 | 2023-11-28 | 无锡申海供水设备制造有限公司 | Intelligent control method and system for non-negative pressure secondary water supply equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20101218 |