CN104074239A - Full-automatic variable-frequency constant-pressure water supply system and control method thereof - Google Patents
Full-automatic variable-frequency constant-pressure water supply system and control method thereof Download PDFInfo
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- CN104074239A CN104074239A CN201410311131.1A CN201410311131A CN104074239A CN 104074239 A CN104074239 A CN 104074239A CN 201410311131 A CN201410311131 A CN 201410311131A CN 104074239 A CN104074239 A CN 104074239A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000008399 tap water Substances 0.000 claims description 8
- 235000020679 tap water Nutrition 0.000 claims description 8
- 239000008400 supply water Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002706 hydrostatic effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a full-automatic variable-frequency constant-pressure water supply system and a control method thereof. The full-automatic variable-frequency constant-pressure water supply system comprises a pressure tank, a pressure sensor, a flow rate sensor, a control cabinet, a multi-stage variable-frequency water pump set, a low-water level sensor and a pool; the control cabinet is connected with a plurality of parallel multi-stage water pump sets, the water inlet end of the multi-stage variable-frequency water pump set is connected with the pool while the water discharge end is connected with the pressure tank, the pressure tank is connected with the control cabinet through the pressure sensor, the pool is connected with the control cabinet through the water level sensor, and the flow rate sensor is connected with the control cabinet. The control method is capable of regulating the water pump rotating speed in a variable frequency mode and controlling the used water pump number to regulate the pressure at the water use end, the intelligent degree is high, and the energy saving effect is good; the pressure tank is capable of effectively eliminating the pressure fluctuation of the water use end to guarantee a constant water supply pressure, the fault rate of each of a water pump motor and a circuit system is obviously reduced, the requirements of a high-speed high-precision water hydrostatic bearing water supply system are satisfied, and the water resource waste is effectively avoided.
Description
Technical field
The present invention relates to a kind of water supply installation and control method thereof, be specifically related to a kind of Full-automatic variable-frequency constant pressure water supply system and control method thereof.
Background technology
Traditional urban water supply is all to adopt electric water pump to water supply network water filling, and not only energy consumption is large, and supplies resident family's water of differing heights with the feed pipe of same hydraulic pressure, often cause lower user hydraulic pressure higher, and highland and high building resident family cannot supply water.People attempt to solve the problem of water consumption of highland and high building resident family by the way that improves hydraulic pressure, facts have proved that this method both wasted energy, and shorten the application life of supply equipment and water supply network, cannot make again the former resident family of highland and high building obtain satisfied pressure of supply water.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can ensure hydraulic pressure, can reduce again Full-automatic variable-frequency constant pressure water supply system and the control method thereof of energy consumption.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Full-automatic variable-frequency constant pressure water supply system, comprises pressurized tank, pressure sensor, flow transmitter, switch board, multistage frequency conversion water pump group, low water level sensor and pond; The described switch board multi-stage water pump group in parallel with many is connected, multistage frequency conversion water pump group water inlet end is connected with pond, the water side of multistage frequency conversion water pump group is connected with pressurized tank, described pressurized tank is connected with switch board through pressure sensor, pond is connected with switch board through low water level sensor, and described flow transmitter is connected with switch board.
Full-automatic variable-frequency constant pressure water supply control method, comprises the steps:
(1), in the time that user's water supply volume is less than a discharge of pump, system, according to the variation of water supply volume, is carried out frequency control operation to water pump;
(2) in the time that water supply volume increases, pipe-line system internal pressure declines, pressure sensor sends the microcomputer control unit in switch board to the signal detecting, move judgement by microcomputer control unit, and issue instructions to Frequency Converter Control pump motor, make pump motor accelerate operation constant with assure feed water system pressure, in the time that water supply volume reduces, make pump rotary speed slow down to keep water system constant pressure;
(3) in the time that water supply volume is greater than a water pump water outlet, First water pump is switched to power frequency operation, and second water pump starts frequency control operation;
(4) in the time of many parallels connection of pumps constant pressure water supply, water supply volume declines, and the rotating speed of variable frequency pump declines, and in the time that frequency drops to zero delivery, controller sends instruction, automatically closes a water pump and makes it to exceed parallel pumping;
(5) cut off the water when tap water pipe network, cause steady-flow tank liquid level constantly to decline, level sensor is by signal feedback to frequency-variable controller, and water pump autostop, to protect water pump assembly.
In described step (1), in the time that night, low discharge water supply and tap water pipe network pressure can not meet the demands, pressurized tank can be stored and release energy, and avoids water pump frequent operation.
The invention has the beneficial effects as follows: water system of the present invention can utilize the original pressure of tap water pipe network to carry out overlapped supercharging water supply automatically, water source not only can be carried out to supercharging automatically supplies water to user, automatically realize constant pressure water supply function, can self-cleaningly clean, and in the time of overhaul of the equipments, do not need to cut off the water, solve the disadvantage of current conventional pond pressurization and water supply equipment.Control method of the present invention, energy frequency conversion is adjusted the rotating speed of water pump and is controlled the number of units of pump working, realizes water end pressure adjustable, and intelligent degree is high, good energy-conserving effect; Autoclave diaphragm formula pressurized tank can effectively be eliminated the pressure fluctuation with water end (W.E.), ensure constant pressure of supply water, and significantly reduce the fault rate of pump motor and Circuits System, and meet the requirement of high-speed, high precision hydrostatic bearing water system, effectively avoid the waste of water resource.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to figure 1, Full-automatic variable-frequency constant pressure water supply system, comprises pressurized tank 1, pressure sensor 2, flow transmitter 3, switch board 4, multistage frequency conversion water pump group 5, low water level sensor 6 and pond 7; The described switch board 4 multistage frequency conversion water pump group 5 in parallel with many is connected, multistage frequency conversion water pump group 5 water inlet ends are connected with pond 7, the water side of multistage frequency conversion water pump group 5 is connected with pressurized tank 1, described pressurized tank 1 is connected with switch board 4 through pressure sensor 2, pond 7 is connected with switch board 4 through low water level sensor 6, and described flow transmitter 3 is connected with switch board 4.
Basic functional principle is to change and automatically regulate operation water pump number of units and a pump rotary speed according to user's water supply volume, makes exit of pump pressure keep constant.In the time that user's water supply volume is less than a discharge of pump, system changes a pump variable frequency speed governing operation according to water supply volume; In the time that water supply volume increases, pipe-line system internal pressure declines, at this moment pressure sensor 2 sends microcomputer control unit to the signal detecting, move judgement by microcomputer, issue instructions to frequency converter, control pump motor, make motor speed accelerate to ensure that system pressure is constant, otherwise in the time that water supply volume reduces, pump rotary speed is slowed down, to keep constant voltage.When water supply volume is greater than one while pumping water, First water pump is switched to power frequency operation, and second water pump starts frequency control operation; Below the water pump under power frequency operation state is called to general pump, the water pump under frequency control running status is called variable frequency pump.In the time that water supply volume is less than two discharge of pump, can automatically stop one or two water pump operations.In whole service process, remain that system constant voltage is constant, make water pump always work in efficient district, both ensure user's constant pressure water supply, save again electric energy.When be less than the flow of a water pump under power frequency constant-pressure conditions by discharge, by a variable frequency pump speed governing constant pressure water supply; When increasing by discharge, the rotating speed automatic-ascending of variable frequency pump; When the rise of rotational speed of variable frequency pump arrives power frequency rotating speed, further increase by discharge, by the control of variable frequency water supply controller, automatically start a general pump suction, the flow that this general pump provides is constant (flow under power frequency rotating speed constant voltage), and all the other each general pumps in parallel drop into by identical principle.In the water supply situation of many parallels connection of pumps frequency-changing pressure stabilizing variable, when declining by discharge, the rotating speed decline (decline of inverter supply frequency) of variable-frequency control pump; In the time that frequency drops to zero delivery, variable frequency water supply controller sends an instruction, automatically closes a general pump and makes it to exceed parallel pumping.Impact (impact waterpower or electric current) while exceeding in automatically dropping in order to reduce general pump.In the time dropping into, the rotating speed of variable frequency pump declines automatically, then slowly rises to meet the requirement of constant pressure water supply.Said frequencies automatic-ascending, declines by the control of water supply frequency-variable controller.
Water in pressurized tank 1 as a supplement water source still can normal water supply, and now, air enters pressurized tank by vacuum breaker, and in tank, vacuum is destroyed, and has guaranteed that tap water pipe network does not produce negative pressure, and after water use peak, system returns to again normal water supply state.When tap water pipe network is cut off the water, build-up of pressure tank liquid level constantly declines, and level sensor is by signal feedback to frequency-variable controller, and water pump autostop, to protect water pump assembly.When night, low discharge water supply and tap water pipe network pressure can not meet the demands, pressurized tank can be stored and release energy, and has avoided water pump frequent starting.
Control method of the present invention, energy frequency conversion is adjusted the rotating speed of water pump and is controlled the number of units of pump working, realizes water end pressure adjustable, and intelligent degree is high, good energy-conserving effect; Autoclave diaphragm formula pressurized tank can effectively be eliminated the pressure fluctuation with water end (W.E.), ensure constant pressure of supply water, and significantly reduce the fault rate of pump motor and Circuits System, and meet the requirement of high-speed, high precision hydrostatic bearing water system, effectively avoid the waste of water resource.
Those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (3)
1. Full-automatic variable-frequency constant pressure water supply system, is characterized in that: comprise pressurized tank, pressure sensor, flow transmitter, switch board, multistage frequency conversion water pump group, low water level sensor and pond; The described switch board multi-stage water pump group in parallel with many is connected, multistage frequency conversion water pump group water inlet end is connected with pond, the water side of multistage frequency conversion water pump group is connected with pressurized tank, described pressurized tank is connected with switch board through pressure sensor, pond is connected with switch board through low water level sensor, and described flow transmitter is connected with switch board.
2. Full-automatic variable-frequency constant pressure water supply control method, is characterized in that comprising the steps:
(1), in the time that user's water supply volume is less than a discharge of pump, system, according to the variation of water supply volume, is carried out frequency control operation to water pump;
(2) in the time that water supply volume increases, pipe-line system internal pressure declines, pressure sensor sends the microcomputer control unit in switch board to the signal detecting, move judgement by microcomputer control unit, and issue instructions to Frequency Converter Control pump motor, make pump motor accelerate operation constant with assure feed water system pressure, in the time that water supply volume reduces, make pump rotary speed slow down to keep water system constant pressure;
(3) in the time that water supply volume is greater than a water pump water outlet, First water pump is switched to power frequency operation, and second water pump starts frequency control operation;
(4) in the time of many parallels connection of pumps constant pressure water supply, water supply volume declines, and the rotating speed of variable frequency pump declines, and in the time that frequency drops to zero delivery, controller sends instruction, automatically closes a water pump and makes it to exceed parallel pumping;
(5) cut off the water when tap water pipe network, cause steady-flow tank liquid level constantly to decline, level sensor is by signal feedback to frequency-variable controller, and water pump autostop, to protect water pump assembly.
3. Full-automatic variable-frequency constant pressure water supply control method according to claim 2, it is characterized in that: in described step (1) when night low discharge supply water and tap water pipe network pressure can not meet the demands time, pressurized tank can be stored and release energy, and avoids water pump frequent operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410311131.1A CN104074239A (en) | 2014-07-02 | 2014-07-02 | Full-automatic variable-frequency constant-pressure water supply system and control method thereof |
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| CN201410311131.1A CN104074239A (en) | 2014-07-02 | 2014-07-02 | Full-automatic variable-frequency constant-pressure water supply system and control method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545763A (en) * | 2015-12-13 | 2016-05-04 | 渤海大学 | Remote control device and control method for water supply pressure tank |
| CN107338830A (en) * | 2017-08-31 | 2017-11-10 | 上海子元汽车零部件有限公司 | A kind of intelligent EPP constant pressure water supply systems and its control method |
| CN108625433A (en) * | 2018-05-17 | 2018-10-09 | 郭学文 | A kind of centrifugal pump intelligent frequency reduction or raising frequency energy-saving control system |
| CN109853674A (en) * | 2019-01-16 | 2019-06-07 | 深圳市英威腾电气股份有限公司 | Constant pressure water supply control method and system |
| CN110173023A (en) * | 2019-06-24 | 2019-08-27 | 上海威派格智慧水务股份有限公司 | A kind of three tank body stabilizing compensation non-negative pressure water-supply devices |
| CN111520316A (en) * | 2020-05-12 | 2020-08-11 | 济宁金水科技有限公司 | Multi-pump parallel multi-frequency conversion synchronous speed regulation water supply control system and control method thereof |
| CN112502241A (en) * | 2020-12-07 | 2021-03-16 | 吴仙亮 | Water supply equipment and method for automatically matching proper water pump according to real-time flow |
| CN113323083A (en) * | 2020-07-13 | 2021-08-31 | 山东鑫和供水设备有限公司 | Variable-frequency water supply system and control method thereof |
| CN113957956A (en) * | 2021-11-01 | 2022-01-21 | 河南慧水科技有限公司 | Intelligent full frequency conversion water supply control cabinet |
| CN116180847A (en) * | 2022-12-30 | 2023-05-30 | 浙江南源智慧水务有限公司 | A terminal constant pressure digital full frequency conversion water supply system and its water supply method |
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| CN2092564U (en) * | 1991-06-20 | 1992-01-08 | 北京市南郊德茂供水设备厂 | Constant pressure energy-saving water supply equipment |
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- 2014-07-02 CN CN201410311131.1A patent/CN104074239A/en active Pending
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| CN2092564U (en) * | 1991-06-20 | 1992-01-08 | 北京市南郊德茂供水设备厂 | Constant pressure energy-saving water supply equipment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545763A (en) * | 2015-12-13 | 2016-05-04 | 渤海大学 | Remote control device and control method for water supply pressure tank |
| CN107338830A (en) * | 2017-08-31 | 2017-11-10 | 上海子元汽车零部件有限公司 | A kind of intelligent EPP constant pressure water supply systems and its control method |
| CN108625433A (en) * | 2018-05-17 | 2018-10-09 | 郭学文 | A kind of centrifugal pump intelligent frequency reduction or raising frequency energy-saving control system |
| CN109853674A (en) * | 2019-01-16 | 2019-06-07 | 深圳市英威腾电气股份有限公司 | Constant pressure water supply control method and system |
| CN110173023A (en) * | 2019-06-24 | 2019-08-27 | 上海威派格智慧水务股份有限公司 | A kind of three tank body stabilizing compensation non-negative pressure water-supply devices |
| CN111520316A (en) * | 2020-05-12 | 2020-08-11 | 济宁金水科技有限公司 | Multi-pump parallel multi-frequency conversion synchronous speed regulation water supply control system and control method thereof |
| CN113323083A (en) * | 2020-07-13 | 2021-08-31 | 山东鑫和供水设备有限公司 | Variable-frequency water supply system and control method thereof |
| CN112502241A (en) * | 2020-12-07 | 2021-03-16 | 吴仙亮 | Water supply equipment and method for automatically matching proper water pump according to real-time flow |
| CN113957956A (en) * | 2021-11-01 | 2022-01-21 | 河南慧水科技有限公司 | Intelligent full frequency conversion water supply control cabinet |
| CN116180847A (en) * | 2022-12-30 | 2023-05-30 | 浙江南源智慧水务有限公司 | A terminal constant pressure digital full frequency conversion water supply system and its water supply method |
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Application publication date: 20141001 |