CN204919657U - According to automatic water supply equipment who matches suitable water pump of real -time flow - Google Patents
According to automatic water supply equipment who matches suitable water pump of real -time flow Download PDFInfo
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- CN204919657U CN204919657U CN201520572720.5U CN201520572720U CN204919657U CN 204919657 U CN204919657 U CN 204919657U CN 201520572720 U CN201520572720 U CN 201520572720U CN 204919657 U CN204919657 U CN 204919657U
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- 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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Abstract
The utility model provides an according to automatic water supply equipment who matches suitable water pump of real -time flow, the utility model discloses an equipment includes the serial -type pile basic, normal, high district water supply equipment that the pressure is connected, wherein, low district water supply equipment includes in proper order: flowmeter, play water pressure monitoring device, the water pump of a set of different flows and converter, water shortage protection device, voltage regulator device and the PLC of corresponding power, pump house parallel connection, the water pump is by the converter individual drive who corresponds power, the flowmeter can real -time supervision equipment the flow value and feed back to PLC, in, high district water supply equipment's equipment constitute the same with low district water supply equipment, only each pump capacity, lift and the converter power difference that corresponds. The utility model discloses can realize the suitable water pump according to the automatic accurate matching of real -time flow, make all water pumps all can work in high -efficient interval in all water periods, realize more energy -conservingly more than 30% than product of the same type.
Description
Technical field
The utility model relates to a kind of supply equipment, is specifically related to a kind of supply equipment according to the suitable water pump of the automatic exact matching of real-time traffic, belongs to supply equipment field of energy-saving technology.
Background technology
Because the municipal ductwork pressure in each city is limited, city planting ductwork water supply is the highest also can only to seven or eight floors, and the residential quarters even had are in pipe network end Stall and carry out pressurization water supply with regard to needs, and highrise building just needs to supply water through pressurized equipment.Original tap water city planting ductwork ubiquity when the water use peak phase insufficient pressure, and this phenomenon is more general at highrise building, brings great inconvenience to the life of resident.Trace it to its cause, mainly by the restriction of supply equipment backward in technique, resident often occurs that when the water use peak phase pressure of supply water is not enough, and now output is far below demand, cannot assure feed water quality; And using water low peak period, water Gong Give measures often higher than demand, and now hydraulic pressure raises rapidly, not only causes huge waste of energy, and continues for a long time and likely cause water supply line to break even to cause the damage of supply equipment.
There is some problem following in current supply equipment on the market:
1, energy-saving effect is undesirable.Supply equipment is when designing, 1.5 to 2.5 times of allowances are got to design total flow by the maximum water supply volume of reality, and actual used water amount does not all reach this design discharge in the limiting case, in project occupancy rate when low and non-water use peak phase, the degree of off-design flow is larger.The efficiency curve near parabolic of water pump, its summit is metered flow value, only can be similar in metered flow ± 20 ~ 30% scope of water pump and think that it is operated between high efficient area.Conventional secondary water-supply technology generally all uses the water pump parallel pumping of two to four (corresponding the using and the reserved to three are standby with one) same traffic and power, under this kind of mode, only when the water use peak phase, a pump working this pump under power frequency state just can reach peak efficiency, all depart between high efficient area far away under all the other most operating modes, efficiency is very low, cause unit pushing quantity energy consumption too high, far do not reach its theoretical energy-saving effect.
2, because pump rotary speed change is too fast in pump variable frequency/power frequency handoff procedure, suddenly open and suddenly stop, cause water outlet water pressure fluctuations too large, what have a strong impact on user uses water comfortableness.
The centrifugal pump of supply equipment has: rated head is lower, and efficiency is higher; Metered flow is larger, two characteristics that efficiency is also higher.This two large problems how utilizing these two characteristics of supply equipment centrifugal pump to solve the existence of existing supply equipment has great social effect for a solution Municipal water supply difficult problem.
CN201089954Y discloses a kind of automatically component water supply installation, feed pipe is set up component probe, when resource of water supply is not enough, flow reduces, during pressure drop, the change of the pressure of reception is fed back to the gauge tap in control cabinet by component probe by wire, gauge tap controls water pump and opens pump quantity or reduce pump rotary speed, control its water withdrawal, reach component water intaking.Although the technology in this documents can solve the problem of high building urbanite water consumption difficulty, the higher and pump rotary speed of energy consumption frequently switches, and will affect the application life of equipment.
CN100523397C discloses a kind of city stairstep constant pressure water supply equipment and method, supply equipment in this documents is provided with the variable frequency pump of one group of different flow, effectively can improve energy use efficiency, improve energy-saving effect, but the selection of water pump is controlled by the pressure of delivery port, very not accurate, the Real-Time Monitoring of equipment flow can not be realized, with the water pump of automatic exact matching, switching, combination, the most suitable flow value of start and stop, make all water pumps all can work in high efficiency range in the useful water period, realize energy-conservation function to greatest extent.
Utility model content
Technical problem to be solved in the utility model is, provide a kind of energy consumption low, according to the suitable water pump of the automatic exact matching of real-time traffic, all water pumps can be made all can to work in high efficiency range in the useful water period, realize energy-conservation supply equipment to greatest extent.
For solving technical problem of the present utility model, the technical scheme adopted is as follows:
According to a supply equipment for the suitable water pump of real-time traffic Auto-matching, comprise tandem and laminate the low district supply equipment of connection, middle district supply equipment and high district supply equipment; Wherein, described low district supply equipment comprises successively: the water pump of flow meter, discharge pressure monitoring device, one group of different flow and the frequency converter of corresponding power, water-shortage protection device, stable-pressure device and programmable logic controller (PLC) (hereinafter referred to as " PLC "); Be connected in parallel between the water pump of described different flow, described every platform water pump is driven separately by the frequency converter of corresponding power; Described frequency converter, flow meter, discharge pressure monitoring device are connected with PLC respectively with water-shortage protection device; Described flow meter can be arranged on water inlet manifold also can be arranged on outfall sewer, and real-time watch device flow value feeds back to PLC, and PLC is according to the suitable water pump of real-time traffic Auto-matching; Described middle district supply equipment is identical with low district supply equipment with the equipment composition of high district supply equipment, only the driving transducer power of each pump capacity, lift numerical value and correspondence is different, other structure, component parts, control procedure all with add that to force down district's supply equipment consistent.
Further, when the design discharge of equipment is less than 50m
3during/h, described water pump is the water pump of two different flows, and every platform water pump drives separately by the frequency converter of its corresponding rated power.Namely described water pump comprises large discharge water pump and low discharge water pump, and the frequency converter of corresponding power is big-power transducer and Small-power Inverter.
Further, when the design discharge of equipment is greater than 50m
3during/h, described water pump is the water pump of three different flows, and every platform water pump drives separately by the frequency converter of its corresponding rated power.Namely described water pump comprises large discharge water pump, middle flow water pump and low discharge water pump, and the frequency converter of corresponding power is big-power transducer, middle power inverter and Small-power Inverter.
Preferably, described flow counts the one in electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter, vortex-shedding meter.
Preferably, described discharge pressure monitoring device is the one in distance-transmission pressure gauge, pressure transmitter.
Preferably, described water-shortage protection device is the one in electro connecting pressure gauge, pressure switch, floating-ball level switch.
Further, described low district supply equipment, middle district supply equipment and high district supply equipment also comprise the color touch be connected with PLC communication respectively and shield.
Further, before described low district supply equipment, also steady-flow tank is provided with.
Further, described PLC can use single-chip microcomputer to substitute.
High, medium and low three water supply subarea of same project are together in series by the utility model, water source inputs from low district supply equipment water inlet manifold, water outlet after pressurization is divided into two-way, one tunnel directly exports the low district user of supply, another road is as supply equipment water source, middle district, in pressurization, the water outlet of district's supply equipment is divided into two-way again, one tunnel directly exports district user in supply, another road is as the water source of high district supply equipment, and the outfall sewer of pressurization Hou Conggao district, this water source, road supply equipment exports the high district user of supply;
Described low district supply equipment, middle district supply equipment, high district supply equipment comprise the water pump of one group of different flow and the frequency converter of corresponding power respectively and are arranged on the flow meter of water inlet manifold or outfall sewer, be connected in parallel between the water pump of described different flow, described every platform water pump is driven separately by the frequency converter of corresponding power; The flow value of described flow meter energy real-time watch device, and feed back to PLC, control suitable water pump start and stop corresponding to transducer drive by PLC, make all water pumps all work in high efficiency range in the useful water period.
Operating principle:
The centrifugal water pump that supply equipment uses has two characteristics: rated head is lower, and its efficiency is higher; Metered flow is larger, and its efficiency is also higher.According to these two characteristics of centrifugal pump, the utility model has done following improvement:
1, the utility model uses tandem to laminate technology: high, medium and low three water supply subarea (low district supply equipment, middle district supply equipment and high district supply equipment) by same project are together in series, low district design discharge is project total flow, calculate by project total water amount during flow rate calculation, lift is low district rated lift, water outlet after the supply equipment pressurization of low district is divided into two-way, low district user is directly supplied on one tunnel, and another road is as the water source of middle district supply equipment; Middle district supply equipment superpose on the pressure-based of low district supply equipment water outlet a very little pressure can reach in lift needed for district's supply equipment, supply equipment design discharge Shi Anzhong district of middle district He Gao district two district water user number summation calculates, water outlet after pressurization is divided into two-way equally, one tunnel directly supply in district user, another road is as the water source of high district supply equipment; High district supply equipment superposes a very little pressure on the pressure-based of middle district supply equipment water outlet can reach lift needed for high district supply equipment, and design discharge Shi Zhiangao district water user number calculates.Lift needed for each zone devices is very low, and greatly between 20 meters to 35 meters, and the flow in He Zhong district of low district significantly increases, selected pump efficiency is much higher compared with traditional approach, therefore, the general power needed for complete equipment can decline to a great extent, and realizes energy-conservation object.
2, simultaneously by making the efficiency of all water pumps all work in high-efficiency operation interval in the useful water period, the utility model uses from appropriate single pump frequency conversion technology.
(1) when the design discharge of equipment is less than 50m
3during/h, can use the water pump of two different flows, i.e. large discharge water pump and low discharge water pump, every platform water pump drives separately (being respectively big-power transducer and Small-power Inverter) by the frequency converter of its corresponding rated power.When selecting water pump, make the high efficiency range of the Pump Efficiency Curve of two pumps smoothly dock as far as possible, and each pump discharge summation of two water pumps is the total flow value of this complete equipment, how many to ensure no matter use discharge numerical value, this numerical value is all in the high efficiency range of wherein one or two parallel connection pump.
(2) when design discharge is greater than 50m
3during/h, then use the water pump of three different flows, i.e. large discharge water pump, middle flow water pump and low discharge water pump, every platform water pump drives separately (respectively big-power transducer, medium frequency frequency converter and Small-power Inverter) by the frequency converter of its corresponding rated power.Select the high efficiency range of the Pump Efficiency Curve of three pumps should be made equally smoothly to dock during water pump as far as possible, and each pump discharge summation of three water pumps is the total flow value of this complete equipment, how many to ensure no matter use discharge numerical value, this numerical value is all in the high efficiency range of wherein one or more parallel connection pump.
For realizing the water pump of Auto-matching, switching, combination, start and stop appropriate flow value, install the flow meter of a high-precision and high-stability in water inlet or outfall sewer, described flow meter can be preferably electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter, vortex-shedding meter.Flow meter real-time watch device total flow, according to the water pump of range of flow by the automatic exact matching of PLC (programmable logic controller (PLC)) 13 plug-in, switching, combination, the most suitable flow value of start and stop, make all water pumps all can work in high efficiency range in the useful water period, realize energy-conservation to greatest extent.
For cost consideration, design discharge value is greater than 50m
3the a complete set of equipment of each subregion of project of/h also only can use two water pumps.For improving the stability of system, can consider to set up a stand by pump, stand by pump should select flow that water pump minimum, because this water pump operation time is the longest, start the most frequent, and holistic cost increases minimum.Stand by pump is the same with other several water pumps, is also used alone a frequency converter drive, automatically switches for subsequent use in turn with that water pump of same traffic.
In order to eliminate hydraulic pressure sudden change with stable discharge pressure, the utility model connects vacuum tank on outfall sewer, is supplied water during tiny flow quantity by vacuum tank, in order to avoid equipment frequent start-stop causes energy waste and equipment premature deterioration.
When water is not enough or when cutting off the water, by the water-shortage protection device be arranged on water inlet manifold, signal is delivered to PLC (programmable logic controller (PLC)) control system automatic shutdown protection, automatic starting device normal water supply when water is normal.
For convenience of display, supervisory control system running state and setup parameter, the utility model adopts color touch screen, be connected with PLC (programmable logic controller (PLC)) communication by data wire, can show, supervisory control system running state, setup parameter and inquiry failure logging etc.
If water source is the water sources with pressure such as municipal tap water, then equipment needs to increase steady-flow tank (pot with no negative pressure), needs to establish steady-flow tank before described low district supply equipment.
The utility model has following beneficial effect:
1, the utility model is from appropriate single pump frequency conversion technology, by being arranged on the flow meter real-time watch device total flow of water inlet manifold or outfall sewer, these data are delivered to PLC and carries out computing coupling, automatically accurate match selection high efficiency range is closest to the water pump of one or more parallel running of this flow number, driven separately by the frequency converter of its correspondence, all water pumps are made all to work in high efficiency range in the useful water period, energy-conservation at utmost to realize.
2, high, medium and low three pressurization water rationing devices in series formulas connect by the utility model, the pump head of each pressurization subregion can be made to reduce, make the pump capacity in low, middle district increase simultaneously, pump efficiency can be improved, under same operating mode, the general power needed for whole water system (containing high, medium and low three pressurization subregions) can be made to decline several power grade than usual manner.
3, every platform water pump of the present utility model drives separately by a frequency converter of its its power corresponding, has several water pumps just to have several frequency converters, does not have frequency conversion/power frequency handoff procedure, and avoid rotating speed sudden change during switching, water pressure fluctuations is little.Simultaneously, we employ time delay handoff technique in switching water pump process, prepare the water pump that comes into operation first accelerate to discharge pressure start on the rise after, that water pump originally run again row deceleration, until close down, decreases the possibility of water pressure fluctuations to greatest extent.
To sum up, the utility model structure is simple, energy consumption is low, energy-saving effect is remarkable, can realize energy-conservation more than 30%; In addition, water pump, without frequency conversion/power frequency handoff procedure, avoids rotating speed sudden change during switching, effectively can extend the application life of supply equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of supply equipment according to the suitable water pump of real-time traffic Auto-matching of the utility model;
Fig. 2 is that supply equipment tandem of the present utility model laminates water supply schematic flow sheet;
Fig. 3 is the parallel water supply schematic flow sheet of industry supply equipment of the prior art.
Accompanying drawing mark illustrates:
1, steady-flow tank; 2, color touch screen; 3, flow meter; 4, discharge pressure monitoring device; 5, Small-power Inverter; 6, low discharge water pump; 7, middle power inverter; 8, middle flow water pump; 9, big-power transducer; 10, large discharge water pump; 11, water-shortage protection device; 12, stable-pressure device; 13, PLC (programmable logic controller (PLC)); 14, low district supply equipment; 15, low district user; 16, middle district supply equipment; 17, middle district user; 18, high district supply equipment; 19, high district user.
Detailed description of the invention
With below by reference to the accompanying drawings and specific embodiment the utility model is further described:
Embodiment 1
The design discharge of this enforcement is greater than 50m
3/ h, the water pump of described supply equipment is the water pump of three different flows.
As shown in Figure 1, a kind of supply equipment according to the suitable water pump of real-time traffic Auto-matching of the present embodiment, comprises tandem and laminates the low district supply equipment 14 of connection, middle district supply equipment 16 and high district supply equipment 18.Described low district supply equipment 14 comprises the big-power transducer 9 of the middle power inverter 7 of color touch screen 2, flow meter 3, discharge pressure monitoring device 4, the Small-power Inverter 5 of low discharge water pump 6 and corresponding power, middle flow water pump 8 and corresponding power, large discharge water pump 10 and corresponding power, water-shortage protection device 11, stable-pressure device 12 and PLC (programmable logic controller (PLC)) 13 successively.
Low discharge water pump 6, middle flow water pump 8, large discharge water pump 10 are connected in parallel, and are driven separately by Small-power Inverter 5, middle power inverter 7, big-power transducer 9 respectively.
Described frequency converter (comprising Small-power Inverter 5, middle power inverter 7, big-power transducer 9), flow meter 3, discharge pressure monitoring device 4 are connected with PLC (programmable logic controller (PLC)) 13 respectively with water-shortage protection device 11; Color touch screen 2 is connected with PLC (programmable logic controller (PLC)) 13 communication by 485 data wires.
Water inlet manifold and outfall sewer are separately installed with flow meter 3, and real-time watch device flow value feeds back to PLC (programmable logic controller (PLC)) 13, PLC (programmable logic controller (PLC)) 13 according to the suitable water pump of real-time traffic Auto-matching.
Described middle district supply equipment 16 is identical with low district supply equipment 14 with the equipment composition of high district supply equipment 18, the driving transducer power that just each pump capacity, lift numerical value are different and corresponding is different, other structure, component parts, control procedure all with add that to force down district's supply equipment completely the same.Described basic, normal, high supply equipment also comprises supporting pipe valve, switching device, cabinet, base etc.
In the present embodiment, flow meter 3 is electromagnetic flowmeter preferably.
In the present embodiment, discharge pressure monitoring device 4 preferred pressure transmitter.
In the present embodiment, water-shortage protection device 11 is floating-ball level switch preferably.
Water source in the present embodiment is the water sources with pressure such as municipal tap water, needs first by steady-flow tank (pot with no negative pressure) 1, then is delivered to the water inlet manifold of low district supply equipment 14.
The operating principle of the present embodiment is as follows:
Municipal tap water (water source with pressure) enters low district supply equipment 14 water inlet manifold by steady-flow tank (pot with no negative pressure) 1, by entering low district supply equipment 14 outfall sewer after water pump (low discharge water pump 6, middle flow water pump 8 and the large discharge water pump 10) pressurization of three different flows of parallel connection.Water outlet is divided into two-way, low district user 15 is directly supplied on one tunnel, another road is as the water source of middle district supply equipment 16, and after pressurization, therefrom the water inlet manifold of district's supply equipment 16 enters, through in district's supply equipment 16 again pressurize after same by the supply equipment 16 outfall sewer water outlet of middle district.Water outlet is divided into two-way again, district user 17 in the one direct supplied with pressurized in tunnel, another road enters from the water inlet manifold of high district supply equipment 18 as the water source of pressurization high district supply equipment 18, and equally by outfall sewer water outlet after high district supply equipment 18 pressurize again, water outlet direct-furnish is pressurizeed high district user 19.Electromagnetic flowmeter 3 real-time watch device total flow, according to the water pump of range of flow value by the automatic exact matching of PLC (programmable logic controller (PLC)) 13 plug-in, switching, the most suitable flow value of combination, frequency converter (Small-power Inverter 5, middle power inverter 7, big-power transducer 9) is controlled by PLC (programmable logic controller (PLC)) 13, drive corresponding water pump (low discharge water pump 6, middle flow water pump 8 and large discharge water pump 10) start and stop, make all water pumps all work in high efficiency range in the useful water period.Pressure transmitter 4 monitoring pressure signal, and outlet pressure signal is delivered to PLC (programmable logic controller (PLC)) 13, increased by the frequency converter output frequency of the current startup of its internal PID programme-control or reduced, control corresponding water pump acceleration or deceleration, to make the constant pressure of delivery port.For preventing water pump lack of water idle running damage, the present embodiment is provided with water-shortage protection device 11 at water inlet manifold place, and the present embodiment selects floating-ball level switch.In order to eliminate hydraulic pressure sudden change with stable discharge pressure, the present embodiment connects vacuum tank 12 on outfall sewer, is supplied water in order to avoid equipment frequent start-stop causes energy waste and equipment premature deterioration during tiny flow quantity by vacuum tank.For convenience of display, supervisory control system running state and setup parameter, the present embodiment adopts color touch screen 2, can show, supervisory control system running state, setup parameter and inquiry failure logging etc.
Embodiment 2
Embodiment 2 and the difference of embodiment 1 are only that PLC (programmable logic controller (PLC)) 13 single-chip microcomputer in embodiment 1 substitutes.
Above-described embodiment further illustrates of the present utility model, instead of limit scope of the present utility model.Do not depart from whole technical scope of the present utility model, can various amendment and change be carried out.
Claims (9)
1., according to a supply equipment for the suitable water pump of real-time traffic Auto-matching, it is characterized in that,
Comprise tandem and laminate the low district supply equipment of connection, middle district supply equipment and high district supply equipment;
Wherein, described low district supply equipment comprises successively: the water pump of flow meter, discharge pressure monitoring device, one group of different flow and the frequency converter of corresponding power, water-shortage protection device, stable-pressure device and PLC;
Be connected in parallel between the water pump of described different flow, described every platform water pump is driven separately by the frequency converter of corresponding power;
Described frequency converter, flow meter, discharge pressure monitoring device are connected with PLC respectively with water-shortage protection device;
Described flow meter can be arranged on water inlet manifold also can be arranged on outfall sewer, and real-time watch device flow value feeds back to PLC, and PLC is according to the suitable water pump of real-time traffic Auto-matching;
Described middle district supply equipment is identical with low district supply equipment with the equipment composition of high district supply equipment, and only the driving transducer power of each pump capacity, lift numerical value and correspondence is different.
2. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1, is characterized in that, when the design discharge of equipment is less than 50m
3during/h, described water pump is the water pump of two different flows, and every platform water pump drives separately by the frequency converter of its corresponding rated power.
3. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1, is characterized in that, when the design discharge of equipment is greater than 50m
3during/h, described water pump is the water pump of three different flows, and every platform water pump drives separately by the frequency converter of its corresponding rated power.
4. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, is characterized in that, described flow counts the one in electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter, vortex-shedding meter.
5. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, is characterized in that, described discharge pressure monitoring device is the one in distance-transmission pressure gauge, pressure transmitter.
6. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, is characterized in that, described water-shortage protection device is the one in electro connecting pressure gauge, pressure switch, floating-ball level switch.
7. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, it is characterized in that, described low district supply equipment, middle district supply equipment and high district supply equipment also comprise the color touch be connected with PLC communication respectively and shield.
8. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, is characterized in that, before described low district supply equipment, be also provided with steady-flow tank.
9. the supply equipment according to the suitable water pump of real-time traffic Auto-matching according to claim 1-3 any one, is characterized in that, described PLC uses single-chip microcomputer to substitute.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089097A (en) * | 2015-08-03 | 2015-11-25 | 湖南沃尔特水设备有限公司 | Water supply device and method for automatically matching appropriate water pumps according to real-time flows |
| FR3050856A1 (en) * | 2016-01-22 | 2017-11-03 | Saint Gobain Pont A Mousson | METHOD AND DEVICE FOR SELECTING A TYPE OF PIPE FOR PRODUCING A FLUID DISTRIBUTION NETWORK |
| CN108411980A (en) * | 2018-03-26 | 2018-08-17 | 山东普利龙压力容器有限公司 | Low energy consumption combined type non-negative pressure water-supply installation |
| CN110847287A (en) * | 2019-11-25 | 2020-02-28 | 山东科源供排水设备工程有限公司 | Small and medium water supply pump station and use method thereof |
| WO2021087736A1 (en) * | 2019-11-05 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Water pump flow rate control method, water pump control system, and agricultural unmanned aerial vehicle |
-
2015
- 2015-08-03 CN CN201520572720.5U patent/CN204919657U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089097A (en) * | 2015-08-03 | 2015-11-25 | 湖南沃尔特水设备有限公司 | Water supply device and method for automatically matching appropriate water pumps according to real-time flows |
| FR3050856A1 (en) * | 2016-01-22 | 2017-11-03 | Saint Gobain Pont A Mousson | METHOD AND DEVICE FOR SELECTING A TYPE OF PIPE FOR PRODUCING A FLUID DISTRIBUTION NETWORK |
| CN108411980A (en) * | 2018-03-26 | 2018-08-17 | 山东普利龙压力容器有限公司 | Low energy consumption combined type non-negative pressure water-supply installation |
| WO2021087736A1 (en) * | 2019-11-05 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Water pump flow rate control method, water pump control system, and agricultural unmanned aerial vehicle |
| CN110847287A (en) * | 2019-11-25 | 2020-02-28 | 山东科源供排水设备工程有限公司 | Small and medium water supply pump station and use method thereof |
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