CN1516040A - Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product - Google Patents
Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004590 computer program Methods 0.000 title claims abstract description 15
- 238000004364 calculation method Methods 0.000 title description 2
- 230000005611 electricity Effects 0.000 claims description 45
- 238000005457 optimization Methods 0.000 claims description 11
- 238000004134 energy conservation Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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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
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The present invention relates to an energ-saving designing, measuring, calculating and operation method for water pump draught fan station and its computer program product. It utilizes the creation of water pump draught fan station equipment data base, inputs the technological requirements and selects the equipments for water pump draught fan station so as to define electric consumption of minimum unit yield of water pump draught fan station, maximum yield of every kilowatt-hour and rotating speed of water-pump draught fan according to three modes of full fixed speed, fully speed regulation and one speed regulation under the condition of meeting technological requirements, and utilizes the steps of programming and compilation to form computer program product.
Description
Affiliated technical field the present invention relates to the energy-saving field of water pump fan station, especially can carry out energy-conservation design measuring and calculating operation method and computer program to water pump fan station integral body.
Background technology is present, computing method and computer program to water pump fan operation power consumption, be mainly used in separate unit water pump blower fan is carried out performance test, not that water pump fan station to multicomputer carries out whole power consumption test, and this calculating is often only at water pump blower fan itself, do not comprise motor that drags the water pump blower fan and the speed regulator that motor speed is regulated, this method can not reflect the power consumption situation of water pump blower fan integral device, can not provide the optimization operation power consumption situation of multicomputer water pump fan station integral body.
Summary of the invention is in order to overcome the deficiency that can not provide water pump fan station global optimization operation power consumption that existing method and computer program product exists, the invention provides a kind of water pump fan station energy-conservation design measuring and calculating operation method and computer program, it can not only calculate the power consumption of separate unit water pump blower fan itself, and can provide the optimization operation power consumption of multicomputer water pump fan station integral body.
The technical solution adopted for the present invention to solve the technical problems is: set up water pump fan station equipment (water pump blower fan, motor, speed regulator) database, and according to technological requirement (or system-head curve) and equipment (water pump blower fan, motor, speed regulator) parameter is determined the water pump fan station and is being satisfied under the process conditions, all use fixed rotating speed water pump fan operation mode (being called full constant speed mode later on), all use rotating speed scalable water pump fan operation mode (being called full mode of speed regulation later on), all the other are operation power consumption of the water pump fan station global optimization under three kinds of methods of operation of fixed rotating speed water pump fan operation mode (claiming a mode of speed regulation later on) and rotating speed only to use an adjustable speed water pump blower fan, technological requirement can be the requirement to water pump fan station delivery rate or output pressure, technological requirement also can be described with satisfying system-head curve sometimes, and device parameter comprises: the flow lift of water pump blower fan (or flow pressure) characteristic, the flow power characteristic of water pump blower fan, motor load rate efficiency characteristic, speed regulator rate of load condensate rotating speed efficiency characteristic.Water pump fan station global optimization operation power consumption is to provide by a kind of water pump blower fan minimum specific yield power consumption or two kinds of minimum specific yield power consumptions of water pump blower fan contrast under three kinds of methods of operation; Water pump fan station global optimization operation power consumption is to provide by a kind of water pump blower fan the highest every degree electricity productioin or two kinds of the highest every degree electricity productioins of water pump blower fan contrast under three kinds of methods of operation; The water pump rotation speed of fan of water pump fan station global optimization operation be by a kind of water pump blower fan under three kinds of methods of operation the water pump rotation speed of fan or the water pump rotation speed of fan of two kinds of water pump blower fan contrasts provide.
For pump works, realize that the step of energy-saving design, energy-conservation measuring and calculating, energy-saving run is: with the flow lift characteristic H=f of the used water pump of pump works
1(Q), flow power characteristic P=f
2(Q) input pump database, H represents lift, and Q represents flow, and P represents power; The rate of load condensate efficiency characteristic η=f of the used motor of water pump will be dragged
3(L) input motor data storehouse, η represents efficient, and L represents rate of load condensate; Rate of load condensate rotating speed efficiency characteristic η=f with the used speed regulator of motor
4(η represents efficient for L, n) input speed regulator database, and L represents rate of load condensate, and n represents rotating speed; Input technological requirement H=f
5(Q), technological requirement H=H when satisfying system-head curve
Max-(Q
Max 2-Q
2) * (H
Max-H
Mm) ÷ (Q
Max 2-Q
Min 2), H represents the required lift of pipe network, and Q represents pipe network flow, Q
MaxRepresent the pipe network maximum flow, H
MaxRepresent pipe network required the most high-lift, Q
MinRepresent the pipe network minimum flow, H
MinRepresent the required minimum lift of pipe network; Determine and satisfy under the technological requirement condition, the minimum specific yield power consumption change curve W of the whole power consumption of full constant speed mode
1=f
6(Q), the highest every degree electricity productioin changes power consumption V
1=f
7(Q), W
1The whole minimum specific yield power consumption of full constant speed mode pump works, V
1The complete the highest every degree electricity productioin of constant speed mode pump works integral body; Determine and satisfy under the technological requirement condition, the minimum specific yield power consumption change curve W of the whole power consumption of a mode of speed regulation
2=f
8(Q), the highest every degree electricity productioin change curve V
2=f
9(Q), the flow rotation speed change curve n that is used for stability distinguishing
2=f
10(Q), W
2The whole minimum specific yield power consumption of one mode of speed regulation pump works, V
2The highest every degree electricity productioin of one mode of speed regulation pump works integral body, n
2One mode of speed regulation governor impeller rotating speed; Determine and satisfy under the process conditions, the minimum specific yield power consumption change curve W of the whole power consumption of full mode of speed regulation
3=f
11(Q), the highest every degree electricity productioin change curve V
3=f
12(Q), the flow rotation speed change curve n that is used for stability distinguishing
3=f
13(Q), W
3The whole minimum specific yield power consumption of full mode of speed regulation pump works, V
3The complete the highest every degree electricity productioin of mode of speed regulation pump works integral body, n
3Full mode of speed regulation governor impeller rotating speed
The specific yield power consumption change curve of pump works under full constant speed, a speed governing, complete three kinds of methods of operation of speed governing provides in same displayed map, can determine the method for operation of the power saving of corresponding same flow operating mode so easily, three kinds of economize on electricity ratios that mode is compared; Water-change pump more, motor, speed regulator can be on same figure, specific yield power consumption change curve under the three kinds of methods of operation of drawing once more, the specific yield power consumption change curve of two kinds of water pumps also can be used as two figure and draws separately, contrast between two kinds of different designs schemes at each flow section specific yield power consumption, intuitively draw two kinds of specific yield power consumption height between the different designs scheme, provide the design proposal of power saving, because the specific yield power consumption curve of three kinds of methods of operation provides in same displayed map, contrast can be determined design proposal easily mutually; The rotation speed change curve of three kinds of methods of operation also provides in same figure, full constant speed mode rotating speed is that rated speed does not change, if in the rotation speed change curve operational outfit platform number fixedly the time corresponding same rotating speed if any two flow points, both rotating speed was with the unique correspondence of flow right and wrong, then there is the operation stability problem in this water pump fan station, can draw pump works according to the rotation speed change curve and whether have stable hidden danger, determine the stable method of operation, determining with rotating speed is the optimum switching point of controlled parameter.
When the platform number of pump works water pump is 1, motor load rate efficient and speed regulator rate of load condensate rotating speed efficiency characteristic are constant to be 100% o'clock, can draw the specific yield power consumption of separate unit water pump itself, every degree electricity productioin and rotary speed property.
For fan station, realize that the step of energy-saving design, energy-conservation measuring and calculating, energy-saving run is: with flow pressure characteristic the P '=f of the used blower fan of fan station
1(Q), flow power characteristic P=f
2(Q) input blower fan database, P ' representative pressure, Q represents flow, and P represents power; The rate of load condensate efficiency characteristic η=f of the used motor of blower fan will be dragged
3(L) input motor data storehouse, η represents efficient, and L represents rate of load condensate; Rate of load condensate rotating speed efficiency characteristic η=f with the used speed regulator of motor
4(η represents efficient for L, n) input speed regulator database, and L represents rate of load condensate, and n represents rotating speed; Input technological requirement H=f
5(Q), technological requirement P '=P ' when satisfying system-head curve
Max-(Q
Max 2-Q
2) * (P '
Max-P '
Min) ÷ (Q
Max 2-Q
Min 2), P ' represents the required pressure of pipe network, and Q represents pipe network flow, Q
MaxRepresent the pipe network maximum flow, P '
MaxRepresent the required top pressure of pipe network, Q
MinRepresent the pipe network minimum flow, P '
MinRepresent the required minimum pressure of pipe network; Density γ, temperature T that the input fan station is carried gas, environment atmospheric pressure P
1', temperature T
1Determine and satisfy under the technological requirement condition, the minimum specific yield power consumption change curve W of the whole power consumption of full constant speed mode
1=f
6(Q), the highest every degree electricity productioin changes power consumption V
1=f
7(Q), W
1The whole minimum specific yield power consumption of full constant speed mode fan station, V
1The complete the highest every degree electricity productioin of constant speed mode fan station integral body; Determine and satisfy under the technological requirement condition, the minimum specific yield power consumption change curve W of the whole power consumption of a mode of speed regulation
2=f
8(Q), the highest every degree electricity productioin change curve V
2=f
9(Q), the flow rotation speed change curve n that is used for stability distinguishing
2=f
10(Q), W
2The whole minimum specific yield power consumption of one mode of speed regulation fan station, V
2The highest every degree electricity productioin of one mode of speed regulation fan station integral body, n
2One mode of speed regulation governor impeller rotating speed; Determine and satisfy under the process conditions, the minimum specific yield power consumption change curve W of the whole power consumption of full mode of speed regulation
3=f
11(Q), the highest every degree electricity productioin change curve V
3=f
12(Q), the flow rotation speed change curve n that is used for stability distinguishing
3=f
13(Q), W
3The whole minimum specific yield power consumption of full mode of speed regulation fan station, V
3The complete the highest every degree electricity productioin of mode of speed regulation pump works integral body, n
3Full mode of speed regulation governor impeller rotating speed.
The specific yield power consumption change curve of fan station under full constant speed, a speed governing, complete three kinds of methods of operation of speed governing provides in same displayed map, can determine the method for operation of the power saving of corresponding same flow operating mode so easily, three kinds of economize on electricity ratios that mode is compared; Ventilating fan more, motor, behind the speed regulator, on same figure, specific yield power consumption change curve under the three kinds of methods of operation of drawing once more, the specific yield power consumption change curve of two kinds of blower fans also can be used as two figure and draws separately again, contrast between two kinds of different designs schemes at each flow section specific yield power consumption, intuitively draw two kinds of specific yield power consumption height between the different designs scheme, provide the design proposal of power saving, because the specific yield power consumption curve of the various methods of operation provides in same displayed map, contrast can be determined design proposal easily mutually; The rotation speed change curve of three kinds of methods of operation also provides in same figure, full constant speed mode rotating speed is that rated speed does not change, can draw fan station according to the rotation speed change curve and whether have stable hidden danger, determine the stable method of operation, determining with rotating speed is the optimum switching point of controlled parameter.
When the platform number of fan station blower fan is 1, motor load rate efficient and speed regulator rate of load condensate rotating speed efficiency characteristic are constant to be 100% o'clock, can draw the specific yield power consumption of separate unit blower fan itself, every degree electricity productioin and rotary speed property.
No matter be pump works or fan station, because specific yield power consumption and every degree electricity productioin relation of being inversely proportional to, even only provide a kind of energy-saving design and amount of electricity saving measuring and calculating that also can realize.
The invention has the beneficial effects as follows for newly-built water pump fan station and can determine the minimum design proposal of water pump fan station overall operation power consumption, can determine the pumping plant whole energy ratio that three kinds of different running method are compared, the optimized operation mode of different flow section can be determined, energy conservation potential can also be quantized to determine for existing water pump fan station.
The present invention is further described below in conjunction with accompanying drawing and preferred embodiment for description of drawings.
Fig. 1 is the theory diagram of preferred embodiment of the present invention water pump fan station energy-saving design.
Fig. 2 is the theory diagram of the energy-conservation measuring and calculating of preferred embodiment of the present invention water pump fan station.
Fig. 3 is the theory diagram of preferred embodiment of the present invention water pump fan station energy-saving run.
Fig. 4 is the single FU output power consumption change curve of planting of the preferred embodiment of the present invention.
Fig. 5 is the specific yield power consumption change curve of two kinds of equipment contrasts of the preferred embodiment of the present invention.
Fig. 6 is the every degree electricity productioin of the single kind equipment of a preferred embodiment of the present invention change curve.
Fig. 7 is every degree electricity productioin change curve of two kinds of equipment contrasts of the preferred embodiment of the present invention.
Fig. 8 is the rotation speed change curve map of the single kind equipment of the preferred embodiment of the present invention.
Fig. 9 is the rotation speed change curve map of two kinds of equipment contrasts of the preferred embodiment of the present invention.
Figure 10 is the flow process that computer program was write and formed to the preferred embodiment of the present invention.
Embodiment is in Fig. 1, the parameter of step 101 input water pump fan station technological requirement (or system-head curve), step 102 selects the used equipment of water pump fan station (to comprise: water pump, blower fan, motor, speed regulator), step 103 determines to satisfy full constant speed under the technological requirement condition, full speed governing, the specific yield power consumption change curve of one mode of speed regulation in the full flow scope and every degree electricity productioin curve of full flow scope, step 104 is determined the platform number of speed regulator, step 105 judges whether the specific yield power consumption is satisfied with, enter step 106 selects other model in optional scope equipment and reenter step 103 step 104 and calculate as dissatisfied, as the satisfied step 107 that enters, determine the specific yield power consumption is minimum in the optional equipment scope unit type and speed regulator platform number, step 108 is determined the situation of change of specific yield power consumption in the full flow scope.
In Fig. 2, the parameter of step 201 input water pump fan station technological requirement (or system-head curve), step 202 is selected the used equipment (comprising: water pump, blower fan, motor, speed regulator) of water pump fan station, step 203 determines to satisfy full constant speed under the technological requirement condition, full speed governing, the specific yield power consumption change curve of a mode of speed regulation in the full flow scope and every degree electricity productioin curve of full flow scope, the minimum specific yield power consumption of step 204 each flow section of contrast draws the economize on electricity ratio of each flow section with effective unit output power consumption.
In Fig. 3, the parameter of step 301 input water pump fan station technological requirement (or system-head curve), step 302 is selected the used equipment (comprising: water pump, blower fan, motor, speed regulator) of water pump fan station, step 303 determines to satisfy minimum specific yield power consumption curve and the highest every degree electricity productioin curve under the technological requirement condition, step 304 is determined the water pump blower fan combination of different flow section, the delivery rate of every water pump blower fan, technology switching point, the water pump rotation speed of fan, the equipment start-stop state.
In Fig. 4, curve 41 (solid line) is the specific yield power consumption of full constant speed mode, and curve 42 (dot-and-dash line) is the specific yield power consumption of a mode of speed regulation, and curve 43 (dotted line) is the specific yield power consumption of full mode of speed regulation, and arbitrary flow point is such as at Q in Fig. 4
1And Q
2The flow point, the specific yield power consumption of three kinds of different running method can obtain from figure, and difference each other can draw, and the economize on electricity ratio of comparing each other also can draw, the method of operation that can determine the minimum output power consumption from Fig. 4 is full mode of speed regulation, flow Q
3For full speed governing operation mode from 1 switching point that switches to 2 equipment (water pump blower fan), flow point Q
4Switching point for complete 2 equipment to 3 equipment of mode of speed regulation.
In Fig. 5, curve 51 (solid line) is the specific yield power consumption of first kind of full constant speed mode of equipment, curve 52 (dot-and-dash line) is the specific yield power consumption of first kind of equipment one mode of speed regulation, curve 53 (dotted line) is the specific yield power consumption of first kind of full mode of speed regulation of equipment, curve 510 (solid line) is the specific yield power consumption of second kind of full constant speed mode of equipment, curve 520 (dot-and-dash line) is the specific yield power consumption of second kind of equipment one mode of speed regulation, curve 530 (dotted line) is the specific yield power consumption of second kind of full mode of speed regulation of equipment, can determine that from Fig. 5 first kind of equipment is lower than the specific yield power consumption of second kind of equipment, a flow point in office is such as flow point Q
5Can determine the specific yield power consumption of two kinds of distinct devices under different running method.
In Fig. 6, curve 61 (solid line) is every degree electricity productioin of full mode of speed regulation, and curve 62 (dot-and-dash line) is every degree electricity productioin of a mode of speed regulation, and curve 63 (dotted line) is every degree electricity productioin of full mode of speed regulation, and arbitrary flow point in Fig. 6 is such as at Q
6And Q
7The flow point, every degree electricity productioin of three kinds of different running method can draw from figure, and every degree electricity productioin difference each other can draw, economize on electricity ratio each other also can draw, from Fig. 6, can determine the highest every degree electricity productioin method of operation is full mode of speed regulation, flow point Q
8Be the switching point of full mode of speed regulation from 1 equipment to 2 equipment, flow point Q
9Be the switching point of full mode of speed regulation from 2 equipment to 3 equipment.
In Fig. 7, curve 71 (solid line) is every degree electricity productioin of first kind of full constant speed mode of equipment, curve 72 (dot-and-dash line) is the every degree electricity productioin of first kind of equipment under a mode of speed regulation, curve 73 (dotted line) is the every degree electricity productioin of first kind of equipment under full mode of speed regulation, curve 710 (solid line) is every degree electricity productioin of second kind of full constant speed mode of equipment, curve 720 (dot-and-dash line) is the every degree electricity productioin of second kind of equipment under a mode of speed regulation, curve 720 (dotted line) is the every degree electricity productioin of second kind of equipment under full mode of speed regulation, can draw the every degree electricity productioin height of first kind of equipment than second kind of equipment from Fig. 7, a flow point in office is such as Q
10, can determine the every degree electricity productioin under two kinds of different running method.
In Fig. 8,81 is rotation speed change curve under the full constant speed mode, 82 is the rotation speed change curve of speed control device under the mode of speed regulation, 83 is the rotation speed change curve of speed control device under the full mode of speed regulation, if in the rotation speed change curve operational outfit platform number fixedly the time corresponding same rotating speed if any two flow points then there is the operation stability problem in this water pump fan station, flow point Q during such as 2 equipment works under a mode of speed regulation
11And Q
12The same rotation speed n of corresponding governor impeller
1So the control instability problem can appear in the water pump fan station shown in Fig. 8 under a mode of speed regulation, but full mode of speed regulation down-off the problems referred to above can not occur during greater than the single device flow, also with regard to the time fluctuation of service can not appear.
In Fig. 9, n
E1Be first kind of equipment rated speed, n
E2Be second kind of equipment rated speed, 91 is first kind of equipment rotation speed change curve under full constant speed mode, 92 is first kind of rotation speed change curve under equipment one mode of speed regulation, 93 is the rotation speed change curve of first kind of equipment under full mode of speed regulation, 910 is second kind of equipment rotation speed change curve under full constant speed mode, 920 is the rotation speed change curve of second kind of equipment speed control device under a mode of speed regulation, 930 is the rotation speed change curve of second kind of equipment under full mode of speed regulation, as can be seen from Figure 9 second kind of equipment has the fluctuation of service problem under a mode of speed regulation, and instability problem can not occur for three kinds of methods of operation of first kind of equipment.
In Figure 10, step 1001 is for writing the device databases supervisory routine of water pump fan station, database comprises water pump blower fan database, motor data storehouse and speed regulator database, step 1002 is for writing technological requirement (or system-head curve) input, water pump fan station choice of equipment, the specific yield power consumption calculates and curve display, every degree electricity productioin calculates and curve display, revolution speed calculating and curvilinear motion show, the mouse position data presentation, the data query subroutine, step 1003, the source code program that 1001 steps of compiling and 1002 steps write is finished the attended operation formation computer program that moves used file.
Claims (5)
1. operation method and computer program are calculated in the energy-conservation design of water pump fan station, described method comprises sets up water pump fan station device databases, and determine water pump fan station global optimization operation power consumption and water pump rotation speed of fan under full constant speed, full speed governing, three kinds of methods of operation of a speed governing according to technological requirement and device parameter, it is characterized in that: water pump fan station global optimization operation power consumption is to provide by a kind of water pump blower fan minimum specific yield power consumption or two kinds of minimum specific yield power consumptions of water pump blower fans contrast under three kinds of methods of operation.
2. design measuring and calculating operation method and computer program that water pump fan station according to claim 1 is energy-conservation is characterized in that: water pump fan station global optimization operation power consumption is to provide by a kind of water pump blower fan the highest every degree electricity productioin or two kinds of the highest every degree electricity productioins of water pump blower fan contrast under three kinds of methods of operation.
3. the energy-conservation design of water pump fan station according to claim 1 measuring and calculating operation method and computer program is characterized in that: the water pump rotation speed of fan of water pump fan station global optimization operation be by a kind of water pump blower fan under three kinds of methods of operation the water pump rotation speed of fan or the water pump rotation speed of fan of two kinds of water pump blower fan contrasts provide.
4. water pump fan station energy-saving design measuring and calculating operation method according to claim 1 and computer program, it is characterized in that: for pump works, its pipe network feature is by H=H
Max-(Q
Max 2-Q
2) * (H
Max-H
Min) ÷ (Q
Max 2-Q
Min 2) determine.
5. water pump fan station energy-saving design measuring and calculating operation method according to claim 1 and computer program, it is characterized in that: for fan station, its pipe network feature is by P '=P '
Max-(Q
Max 2-Q
2) * (P '
Max-P '
Min) ÷ (Q
Max 2-Q
Min 2) determine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031013260A CN100371930C (en) | 2003-01-04 | 2003-01-04 | Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031013260A CN100371930C (en) | 2003-01-04 | 2003-01-04 | Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1516040A true CN1516040A (en) | 2004-07-28 |
| CN100371930C CN100371930C (en) | 2008-02-27 |
Family
ID=34239077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031013260A Expired - Lifetime CN100371930C (en) | 2003-01-04 | 2003-01-04 | Energy-saving design, calculation and operation method of water pump blowe fan station and computer program product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371930C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975156A (en) * | 2010-11-11 | 2011-02-16 | 漯河瑞来信节能科技有限公司 | Minimum power consumption variable-frequency energy-saving control method for pumping station |
| CN101270755B (en) * | 2008-05-11 | 2014-05-21 | 姚福来 | Timing and switching method for controlling water pump fan parallel-connection energy-saving operation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579500A (en) * | 1980-06-19 | 1982-01-18 | Nippon Kentetsu Co Ltd | Clothing drier |
| CN1045832A (en) * | 1990-04-09 | 1990-10-03 | 张力 | Water supply equipment with automatic speed adjustment and pressure variation |
| JPH0979200A (en) * | 1995-09-09 | 1997-03-25 | Yoshihide Shibano | Injection type suction pump |
| CN1194389A (en) * | 1997-07-07 | 1998-09-30 | 重庆钢铁股份有限公司 | Furry controlled full automatic water supply system with display and alarm |
| US6048175A (en) * | 1997-09-24 | 2000-04-11 | Corlew; Edward A. | Multi-well computerized control of fluid pumping |
-
2003
- 2003-01-04 CN CNB031013260A patent/CN100371930C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270755B (en) * | 2008-05-11 | 2014-05-21 | 姚福来 | Timing and switching method for controlling water pump fan parallel-connection energy-saving operation |
| CN101975156A (en) * | 2010-11-11 | 2011-02-16 | 漯河瑞来信节能科技有限公司 | Minimum power consumption variable-frequency energy-saving control method for pumping station |
| CN101975156B (en) * | 2010-11-11 | 2013-01-02 | 漯河恒义达电气设备有限公司 | Minimum power consumption variable-frequency energy-saving control method for pumping station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100371930C (en) | 2008-02-27 |
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