CN107131686A - The circulatory system and its energy-saving control method of multiple ontology centrifugal pump - Google Patents
The circulatory system and its energy-saving control method of multiple ontology centrifugal pump Download PDFInfo
- Publication number
- CN107131686A CN107131686A CN201710428797.9A CN201710428797A CN107131686A CN 107131686 A CN107131686 A CN 107131686A CN 201710428797 A CN201710428797 A CN 201710428797A CN 107131686 A CN107131686 A CN 107131686A
- Authority
- CN
- China
- Prior art keywords
- water pump
- msub
- mrow
- pump
- centrifugal water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/13—Pump speed control
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of circulatory system of multiple ontology centrifugal pump and its energy-saving control method, the circulatory system includes multiple centrifugal water pumps and controller, multiple centrifugal water pumps are parallel with one another by delivery pipe, each centrifugal water pump is configured with frequency converter, pressure sensor is respectively equipped with the inlet and outlet of the centrifugal water pump, the controller is electrically connected with the frequency converter and pressure sensor respectively.The present invention builds data model using the primary data of centrifugal water pump, read the data of pressure sensor and frequency converter, bring data model into, power calculation is carried out in the case of being come into operation to various different number of units, the minimum input number of units situation of power is controlled coming into operation for water pump number of units by controller by calculating, centrifugal water pump is adapted to correspondence pipe network curve in the case of various number of units are dynamically analyzed under various working, calculate the minimum unlatching control model of energy consumption, and push control is carried out to optimal solution, conveying efficiency is ensured, efficiency is drastically increased.
Description
Technical field
The present invention relates to water pump of air conditioner technical field, more specifically to a kind of cyclic system of multiple ontology centrifugal pump
System and its energy-saving control method.
Background technology
Fluid delivery cycle water pump system energy consumption accounting is very big in building energy conservation, in the summer electric energy consumption of central air conditioning
In, about 25%~30% power load is consumed for water pump of air conditioner transmission ＆ distribution.Because design selection is unreasonable, pump selection stream
Amount is big, and lift is high, and the degree that pipe network is less than pump selection lift corresponding to the water resistance of correct design discharge is larger, and result is water
Running operating point considerably deviates reasonable running operating point, that is, actual operating mode point often deviate from
The efficacious workaround of water pump, this causes building conveying energy consumption generally higher.And multiple ontology converting operation is commonly used in building
Fluid delivery structure, the height of water pump efficiency directly affects fluid transportation energy consumption and efficiency.
The content of the invention
It is an object of the invention to provide a kind of circulatory system of multiple ontology centrifugal pump and its energy-saving control method, solve
Deviate in the prior art for operating point caused by rational type selecting and unit number control can not be solved in water pump system, efficiency it is low
The problem of lower.
The technical proposal for solving the technical problem of the invention is：A kind of circulatory system of multiple ontology centrifugal pump, bag
Multiple centrifugal water pumps and controller are included, multiple centrifugal water pumps are parallel with one another by delivery pipe, each centrifugal water pump
Be configured with frequency converter, pressure sensor be respectively equipped with the inlet and outlet of the centrifugal water pump, the controller respectively with
Frequency converter and the pressure sensor electrical connection.
In the circulatory system of the present invention, multiple centrifugal water pumps in parallel are also parallel with user side by delivery pipe.
In the circulatory system of the present invention, the circulatory system also includes expansion tank, the expansion tank with it is each
The centrifugal water pump is connected.
Present invention also offers the energy-saving control method of the above-mentioned circulatory system, including：
S1, by the lift and flow under the initial type selecting parameter fitting centrifugal water pump different flow of centrifugal water pump it
Between the first characteristic curve and centrifugal water pump different flow under the second characteristic curve between efficiency and flow；
S2, pump characteristic under same operating point different frequency built according to step S1 the first characteristic curves being fitted
Model；The mould of pump capacity and efficiency characteristic under different frequency is built according to step S1 the second characteristic curves being fitted
Type；
The number of units for the centrifugal water pump that S3, record are opened, and according to the water pump under the same operating point different frequency built
Characteristic model calculates supply frequency when centrifugal water pump opens different number of units；
The model and step S3 of pump capacity and efficiency characteristic are obtained under S4, the different frequency built according to step S2
The supply frequency when centrifugal water pump arrived opens different number of units calculates pump efficiency when centrifugal water pump opens different number of units；
Water pump input power when S5, the calculating centrifugal water pump different number of units of unlatching.
In the energy-saving control method of the present invention, step S6 is also included after step s 5：By the initial of centrifugal water pump
Pump capacity and efficiency are special under type selecting parameter, the model of pump characteristic under same operating point different frequency and different frequency
Controller is entered in the model typing of linearity curve, and controller calculates and obtains the minimum number of units situation of power and control centrifugal water pump number of units
Input.
In the energy-saving control method of the present invention, step S1 is specifically included：The first of fitting is characteristic secondary multinomial
Formula expression formula is：
H=f (Q)=a × Q2+ b × Q+c, H are pipe resistance, m, i.e. lift, the pressure of the inlet and outlet of centrifugal water pump
The difference of force snesor；Q is the flow of design conditions, m3/h；A is constant；B is constant；C is constant；
A, b, c constant value are obtained according to the first characteristic curve；
Fitting the second characteristic quadratic polynomial expression formula be：η=d × Q2+ e × Q+f,
η is pump efficiency, %；Q is the flow of design conditions, m3/s；D is constant；E is constant；F is constant；
D, e, f constant value are obtained according to the second characteristic curve.
In the energy-saving control method of the present invention, in step s 2, the pump characteristics under same operating point different frequency are bent
The expression formula of the model of line is：
f1、f2Respectively operating mode 1,2 times water pump corresponding power frequencies of operating mode, Hz；Q2Flows are corresponded to for 2 times water pumps of operating mode,
m3/h；H2For 2 times water pump correspondence lifts of operating mode, m；A, b, c are the constant value tried to achieve according to the first characteristic curve in step S1.
In the energy-saving control method of the present invention, in step s 2, pump capacity and efficiency characteristic under different frequency
The expression formula of model be：
η is pump efficiency, %；Q is the flow of design conditions, m3/s；f1For 1 time water pump corresponding power frequency of operating mode, Hz；
D, e, f are the constant value tried to achieve according to the second characteristic curve in step S1.
In the energy-saving control method of the present invention, in step s 5, work(when centrifugal water pump opens different number of units is calculated
The formula of rate is：
P is water pump input power, kW；ρ is density, 1000kg/m3；G is acceleration of gravity, 9.8m/s2；η is design conditions
Pump efficiency, %；Q is the flow of design conditions.
Implement the circulatory system and its energy-saving control method of the multiple ontology centrifugal pump of the present invention, with following beneficial effect
Really：The present invention builds data model using the primary data of centrifugal water pump, reads the data of pressure sensor and frequency converter, band
Enter data model, carry out power calculation in the case of being come into operation to various different number of units, controller is by calculating power most
Low input number of units situation controls coming into operation for water pump number of units, and centrifugal water pump dynamically analyzes various number of units under various working
In the case of be adapted to correspondence pipe network curve, calculate the minimum unlatching control model of energy consumption, and push control is carried out to optimal solution,
Conveying efficiency is ensured, efficiency is drastically increased.
Brief description of the drawings
Fig. 1 is the structural representation of the circulatory system of the multiple ontology centrifugal pump of the present invention；
Fig. 2 is the first characteristic curve map in the specific embodiment of the present invention；
Fig. 3 is the second characteristic curve map in the specific embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the circulatory system to multiple ontology centrifugal pump of the invention and its Energy Saving Control side
Method is described further：
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
"front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " clockwise ", " counterclockwise " etc. are indicated
Orientation or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplification is retouched
State, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
As shown in figure 1, the circulatory system of multiple ontology centrifugal pump includes multiple centrifugal water pumps 1 and controller 2, Duo Geli
Core type water pump 1 is parallel with one another by delivery pipe (not indicated in figure), and each centrifugal water pump 1 is configured with frequency converter 3, in centrifugation
The inlet and outlet of formula water pump 1 is respectively equipped with pressure sensor 4, and controller 2 is electrically connected with frequency converter 3 and pressure sensor 4 respectively
Connect.Wherein, and the parameter of each centrifugal water pump 1 is identical.Pressure sensor 4 is passed in and out for detecting centrifugal water pump 1
The pressure of mouth.Frequency converter 3 is used to adjust water pump frequency, rotating speed and feedback frequency data.Controller 2 is used to calculate the optimal water of control
Pump come into operation number of units and control pump variable frequency operation.
Multiple centrifugal water pumps 1 in parallel are also parallel with user side 5.The circulatory system also includes expansion tank 6, swelling water
Case 6 is connected with each centrifugal water pump 1.Expansion tank 6 plays the constant pressure supply water effect of pipe-line system, centrifugal water pump 1
Ensure that the pressure of centrifugal water pump 1 outlet pressure sensor 4 is not less than setting value by frequency converter 3, water is used with ensure user side 5
Pressure demand.
The pressure sensor 4 that controller 2 is exported by centrifugal water pump 1 controls frequency converter 3, when centrifugal water pump 1 is exported
The reading value of pressure sensor 4 be less than setting value when, the raising frequency of frequency converter 3, when centrifugal water pump 1 export pressure sensor 4 read
When value is higher than setting value, the frequency reducing of frequency converter 3.
Wherein, the quantity of centrifugal water pump 1 is preferably 3-6, more preferably 4.This is in order to avoid centrifugal water pump 1
Quantity excessively causes to waste.
The energy-saving control method of the above-mentioned circulatory system is as follows.
S1, pass through the lift and flow under the initial different flow of type selecting parameter fitting centrifugal water pump 1 of centrifugal water pump 1
Between the first characteristic curve and the different flow of centrifugal water pump 1 under the second characteristic curve between efficiency and flow；Initially
Type selecting parameter refers mainly to efficiency under the characterisitic parameter of centrifugal water pump in itself, i.e., the lift and different flow under different flow；
First characteristic quadratic polynomial expression formula is：
H=f (Q)=a × Q2+ b × Q+c, H are pipe resistance, m, i.e. lift, the pressure of the inlet and outlet of centrifugal water pump
The difference of force snesor；Q is the flow of design conditions, m3/h；A is constant；B is constant；C is constant；
A, b, c constant value are obtained according to the first characteristic curve；
Fitting the second characteristic quadratic polynomial expression formula be：η=d × Q2+ e × Q+f,
η is pump efficiency, %；Q is the flow of design conditions, m3/s；D is constant；E is constant；F is constant；
D, e, f constant value are obtained according to the second characteristic curve.
S2, pump characteristic under same operating point different frequency built according to step S1 the first characteristic curves being fitted
Model；The mould of pump capacity and efficiency characteristic under different frequency is built according to step S1 the second characteristic curves being fitted
Type；
Wherein, the expression formula of the model of the pump characteristic under same operating point different frequency is：
f1、f2Respectively operating mode 1,2 times water pump corresponding power frequencies of operating mode, Hz；Q2Flows are corresponded to for 2 times water pumps of operating mode,
m3/h；H2For 2 times water pump correspondence lifts of operating mode, m；A, b, c are the constant value tried to achieve according to the first characteristic curve in step S1.
The expression formula of the model of pump capacity and efficiency characteristic is under different frequency：
η is pump efficiency, %；Q is the flow of design conditions, m3/s；f1For 1 time water pump corresponding power frequency of operating mode, Hz；
D, e, f are the constant value tried to achieve according to the second characteristic curve in step S1.
It should be noted that above-mentioned operating mode refers to the situation for opening the centrifugal water pump of different number of units.
The number of units for the centrifugal water pump 1 that S3, record are opened, passes through obtained a, b, c constant value and the same work built
The model of pump characteristic under condition point different frequency obtains opening the supply frequency during centrifugal water pump 1 of different number of units；
S4, pass through pump capacity and efficiency characteristic under obtained d, e, f constant value and the different frequency built again
Model, supply frequency is substituted into pump efficiency when obtaining opening the centrifugal water pump 1 of different number of units, and imitate according to the water pump
Rate obtains opening the water pump input power during centrifugal water pump 1 of different number of units.
S5, calculate water pump input power when centrifugal water pump 1 opens different number of units.
The formula for calculating power of the centrifugal water pump 1 when opening different number of units is：
P is water pump input power, kW；ρ is density, 1000kg/m3；G is acceleration of gravity, 9.8m/s2；η is design conditions
Pump efficiency, %；Q is the flow of design conditions.
S6, the mould by the pump characteristic under the initial type selecting parameter of centrifugal water pump 1, same operating point different frequency
Controller 2 is entered in the model typing of pump capacity and efficiency characteristic under type and different frequency, and controller 2 calculates and obtains power most
Low number of units situation and the input for controlling the number of units of centrifugal water pump 1.
Illustrated below by specific embodiment.
Specific embodiment：Certain office building closed-loop water system, pressurization point is disposed proximate to centrifugal water pump inlet, import
Pressure is constant, and outlet pressure sets pressure sensor to calculate according to centrifugal water pump outlet header, and centrifugal water pump passes through setting
Exit pressure levels control frequency to adjust, and the frequency converter feedback of centrifugal water pump is instantaneous to open water pump number of units and frequency.
Water pump based on certain manufacturer model KP5015-9/0 characteristic curve under frequency 50Hz wins ten reference points, such as
Shown in Fig. 2 and 3.It is fitted by MATLAB softwares to winning reference data and calculates quadratic polynomial constant, is fitted water
Pump lift-flow and efficiency-rating curve formula typing control system analysis are calculated and calculated under water pump different flow, lift
It controls frequency, efficiency and power.Water pump quadratic polynomial parameter is respectively：A=-0.00009；B=0.0053；C=
34.693；D=-0.000014；E=0.006677；F=0.046014.
A certain closed circle water system 4 same model water pumps in parallel, it is assumed that instantaneously measure water pump in a certain pipe network and open
One, inlet outlet pressure differential is H '=22.4m, and frequency f ' reading values are 50Hz, can according to the pump characteristic formula under 50Hz
Know, flow value now is 400m3/ h, single argument is carried out according to the pump characteristic formula under same operating point different frequency
Solve and understand the water pump frequency when opening 2,3,4, the different number of units water pump frequencies of correspondence are brought into according under different frequency
Pump capacity understands pump efficiency and power with efficiency characteristic formula and pump power formula, referring to table 1.
The a certain pipe network of table 1 instantaneous different number of units water pump efficiencies and power
Derive that efficiency is optimal, and water pump operation energy consumption is minimum when opening 2 by calculated above, relative to unlatching 1
Pump energy saving rate has reached 43.4%.When separate unit pump efficiency peaks, open many water pump operation meanings and just do not deposit
.
This technology utilizes the initial type selecting parameter of water pump, and the parameters such as water pump frequency, number of units, lift are read in real time, passes through meter
Efficiency, preferably power, energy consumption minimum operation strategy under the real-time different number of units of calculation.Pass through multiple ontology centrifugal pump of the invention
The circulatory system and its energy-saving control method, it is excessive in pump selection, in the case that operating point deviates seriously, water pump can be controlled in height
Imitate in operation interval and run, can be that apparatus manager and pump energy saving control system provide effective Energy Saving Control suggestion, to set
Standby user saves circulation operation energy consumption.
It should be appreciated that it will be understood by those skilled in the art that can according to the above description be improved or converted, but this
A little improvement or conversion should all belong within the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of circulatory system of multiple ontology centrifugal pump, it is characterised in that multiple including multiple centrifugal water pumps and controller
Centrifugal water pump is parallel with one another by delivery pipe, and each centrifugal water pump is configured with frequency converter, in the centrifugal water pump
Inlet and outlet be respectively equipped with pressure sensor, the controller is electrically connected with the frequency converter and pressure sensor respectively.
2. the circulatory system according to claim 1, it is characterised in that multiple centrifugal water pumps in parallel also pass through delivery pipe
It is parallel with user side.
3. the circulatory system according to claim 1, it is characterised in that the circulatory system also includes expansion tank, institute
Expansion tank is stated with each centrifugal water pump to be connected.
4. a kind of energy-saving control method of the circulatory system described in claim 1-3 any claims, it is characterised in that bag
Include：
S1, by between the lift and flow under the initial type selecting parameter fitting centrifugal water pump different flow of centrifugal water pump
The second characteristic curve under first characteristic curve and centrifugal water pump different flow between efficiency and flow；
S2, the mould of the pump characteristic under same operating point different frequency built according to step S1 the first characteristic curves being fitted
Type；The model of pump capacity and efficiency characteristic under different frequency is built according to step S1 the second characteristic curves being fitted；
The number of units for the centrifugal water pump that S3, record are opened, and according to the pump characteristics under the same operating point different frequency built
The model of curve calculates supply frequency when centrifugal water pump opens different number of units；
The model and step S3 of pump capacity and efficiency characteristic are obtained under S4, the different frequency built according to step S2
Supply frequency when centrifugal water pump opens different number of units calculates pump efficiency when centrifugal water pump opens different number of units；
Water pump input power when S5, the calculating centrifugal water pump different number of units of unlatching.
5. energy-saving control method according to claim 4, it is characterised in that also include step S6 after step s 5：
By the model and difference of the pump characteristic under the initial type selecting parameter of centrifugal water pump, same operating point different frequency
Controller is entered in the model typing of pump capacity and efficiency characteristic under frequency, and controller calculates and obtains the minimum number of units feelings of power
Condition and the input for controlling centrifugal water pump number of units.
6. energy-saving control method according to claim 4, it is characterised in that step S1 is specifically included：The first of fitting is special
The quadratic polynomial expression formula of linearity curve is：
H=f (Q)=a × Q2+ b × Q+c, H are pipe resistance, and m, i.e. lift, the pressure of the inlet and outlet of centrifugal water pump are passed
The difference of sensor；Q is the flow of design conditions, m3/h；A is constant；B is constant；C is constant；
A, b, c constant value are obtained according to the first characteristic curve；
Fitting the second characteristic quadratic polynomial expression formula be：η=d × Q2+ e × Q+f,
η is pump efficiency, %；Q is the flow of design conditions, m3/s；D is constant；E is constant；F is constant；
D, e, f constant value are obtained according to the second characteristic curve.
7. energy-saving control method according to claim 6, it is characterised in that in step s 2, the different frequencies of same operating point
The expression formula of the model of pump characteristic under rate is：
<mrow>
<msub>
<mi>H</mi>
<mn>2</mn>
</msub>
<mo>=</mo>
<mi>f</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>Q</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mrow>
<mo>(</mo>
<mi>a</mi>
<mo>&times;</mo>
<msup>
<mrow>
<mo>(</mo>
<mrow>
<mfrac>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
<msub>
<mi>f</mi>
<mn>2</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<msub>
<mi>Q</mi>
<mn>2</mn>
</msub>
</mrow>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<mi>b</mi>
<mo>&times;</mo>
<mo>(</mo>
<mrow>
<mfrac>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
<msub>
<mi>f</mi>
<mn>2</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<msub>
<mi>Q</mi>
<mn>2</mn>
</msub>
</mrow>
<mo>)</mo>
<mo>+</mo>
<mi>c</mi>
<mo>)</mo>
</mrow>
<mo>&times;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<msub>
<mi>f</mi>
<mn>2</mn>
</msub>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
</mrow>
f1、f2Respectively operating mode 1,2 times water pump corresponding power frequencies of operating mode, Hz；Q2For 2 times water pump correspondence flows of operating mode, m3/h；H2
For 2 times water pump correspondence lifts of operating mode, m；A, b, c are the constant value tried to achieve according to the first characteristic curve in step S1.
8. energy-saving control method according to claim 7, it is characterised in that in step s 2, water pump stream under different frequency
Amount and the expression formula of the model of efficiency characteristic are：
<mrow>
<mi>&eta;</mi>
<mo>=</mo>
<mi>d</mi>
<mo>&times;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mn>50</mn>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<mi>Q</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<mi>e</mi>
<mo>&times;</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mn>50</mn>
<msub>
<mi>f</mi>
<mn>1</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<mi>Q</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>f</mi>
</mrow>
η is pump efficiency, %；Q is the flow of design conditions, m3/s；f1For 1 time water pump corresponding power frequency of operating mode, Hz；d、e、f
For the constant value tried to achieve in step S1 according to the second characteristic curve.
9. energy-saving control method according to claim 8, it is characterised in that in step s 5, calculates centrifugal water pump and opens
The formula of power when opening different number of units is：
<mrow>
<mi>P</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>Q</mi>
<mo>&times;</mo>
<mi>&rho;</mi>
<mo>&times;</mo>
<mi>g</mi>
<mo>&times;</mo>
<mi>H</mi>
</mrow>
<mi>&eta;</mi>
</mfrac>
</mrow>
P is water pump input power, kW；ρ is density, 1000kg/m3；G is acceleration of gravity, 9.8m/s2；η is the water of design conditions
The efficiency of pump, %；Q is the flow of design conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428797.9A CN107131686A (en) | 2017-06-08 | 2017-06-08 | The circulatory system and its energy-saving control method of multiple ontology centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428797.9A CN107131686A (en) | 2017-06-08 | 2017-06-08 | The circulatory system and its energy-saving control method of multiple ontology centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107131686A true CN107131686A (en) | 2017-09-05 |
Family
ID=59734465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710428797.9A Pending CN107131686A (en) | 2017-06-08 | 2017-06-08 | The circulatory system and its energy-saving control method of multiple ontology centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107131686A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361184A (en) * | 2018-02-11 | 2018-08-03 | 北京百度网讯科技有限公司 | Method and apparatus for controlling water pump |
| CN109059194A (en) * | 2018-06-08 | 2018-12-21 | 清华大学 | A kind of energy-saving control method of distribution multiple ontology system |
| CN110043455A (en) * | 2019-04-02 | 2019-07-23 | 深圳市海源节能科技有限公司 | A kind of parallel water pump runing adjustment method, intelligent terminal and storage medium |
| CN110147080A (en) * | 2019-05-14 | 2019-08-20 | 江苏天晟节能科技有限公司 | Industrial cycle water control system and its control method based on cloud network |
| 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 |
| CN111927745A (en) * | 2020-09-10 | 2020-11-13 | 福州大学 | Energy-saving control method of parallel full-variable-frequency water pump set used in water intaking engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509680A (en) * | 2009-03-16 | 2009-08-19 | 哈尔滨工业大学 | Energy-conserving control method for adjusting water pump number in synchronization speed changing flow quantity changing heating system |
| CN202530510U (en) * | 2012-03-19 | 2012-11-14 | 胡青松 | Frequency conversion and voltage transformation control system for centralized water supply |
| CN103104509A (en) * | 2013-02-25 | 2013-05-15 | 天津大学 | Obtaining method of variable frequency water pump full working condition operating state |
| CN105864016A (en) * | 2016-04-27 | 2016-08-17 | 西安建筑科技大学 | Variable-water-volume operation regulating method for open multi-water-pump transmission and distribution system |
| CN207095102U (en) * | 2017-06-08 | 2018-03-13 | 深圳达实智能股份有限公司 | The circulatory system of multiple ontology centrifugal pump |
-
2017
- 2017-06-08 CN CN201710428797.9A patent/CN107131686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509680A (en) * | 2009-03-16 | 2009-08-19 | 哈尔滨工业大学 | Energy-conserving control method for adjusting water pump number in synchronization speed changing flow quantity changing heating system |
| CN202530510U (en) * | 2012-03-19 | 2012-11-14 | 胡青松 | Frequency conversion and voltage transformation control system for centralized water supply |
| CN103104509A (en) * | 2013-02-25 | 2013-05-15 | 天津大学 | Obtaining method of variable frequency water pump full working condition operating state |
| CN105864016A (en) * | 2016-04-27 | 2016-08-17 | 西安建筑科技大学 | Variable-water-volume operation regulating method for open multi-water-pump transmission and distribution system |
| CN207095102U (en) * | 2017-06-08 | 2018-03-13 | 深圳达实智能股份有限公司 | The circulatory system of multiple ontology centrifugal pump |
Non-Patent Citations (4)
| Title |
|---|
| 付海明编著: "《建筑环境与设备工程系统分析及设计》", 28 February 2006, 东华大学出版社 * |
| 代允闯等: "并联变频水泵转速优化控制研究", 《暖通空调》 * |
| 麻栋兰等: "变频调速泵并联运行最优调度策略分析", 《长江大学学报(自科版)》 * |
| 黄丝雨等: "关于并联变频水泵的优化运行策略分析", 《上海节能》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361184A (en) * | 2018-02-11 | 2018-08-03 | 北京百度网讯科技有限公司 | Method and apparatus for controlling water pump |
| CN109059194A (en) * | 2018-06-08 | 2018-12-21 | 清华大学 | A kind of energy-saving control method of distribution multiple ontology system |
| CN109059194B (en) * | 2018-06-08 | 2020-07-14 | 清华大学 | Energy-saving control method of distributed multi-pump parallel system |
| CN110043455A (en) * | 2019-04-02 | 2019-07-23 | 深圳市海源节能科技有限公司 | A kind of parallel water pump runing adjustment method, intelligent terminal and storage medium |
| CN110147080A (en) * | 2019-05-14 | 2019-08-20 | 江苏天晟节能科技有限公司 | Industrial cycle water control system and its control method based on cloud network |
| CN110147080B (en) * | 2019-05-14 | 2022-03-18 | 江苏天晟节能科技有限公司 | Industrial circulating water control system based on cloud network and control method thereof |
| 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 |
| CN111927745A (en) * | 2020-09-10 | 2020-11-13 | 福州大学 | Energy-saving control method of parallel full-variable-frequency water pump set used in water intaking engineering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107131686A (en) | The circulatory system and its energy-saving control method of multiple ontology centrifugal pump | |
| CN206360877U (en) | A kind of optimal control for energy saving system of variable frequency pump parallel running | |
| CN103452824B (en) | Based on the energy saving in fans and pumps system of the minimum power algorithm of flow-power curve | |
| CN104990134B (en) | Variable-flow and the central heating system of household metering and hydraulic equilibrium adjusting method | |
| CN105864016B (en) | A kind of more water pump distributing system variable water volume runing adjustment methods of open type | |
| CN106979148B (en) | A kind of control method of step-less adjustment high powered water pump or fan operation | |
| CN103742425B (en) | Energy conservation correcting method for water circulation system | |
| CN105302984A (en) | Modeling and simulation method for ground source heat pump set | |
| CN104481893B (en) | Optimized water pump energy conservation control method | |
| CN112889448A (en) | Water and fertilizer machine actively regulated and controlled based on pipe network terminal information and use method thereof | |
| CN108585173A (en) | The optimal control device and method of sewage treatment plant's blower system energy consumption | |
| CN207095102U (en) | The circulatory system of multiple ontology centrifugal pump | |
| CN100561043C (en) | A kind of boiler feedwater flow control and pressure compensating system | |
| CN207162689U (en) | Pipe network balance-conditioning system of heat supply and heating network | |
| CN112523297A (en) | Pressure stability control system of non-negative pressure water supply system | |
| CN108036464A (en) | A kind of adaptive dynamic refrigeration duty regulation and control method of central air conditioner system | |
| CN111238132A (en) | Energy-saving industrial circulating water system and operation method thereof | |
| CN205137411U (en) | Big undulant steam load steady voltage control system | |
| CN207122894U (en) | A kind of modular condensed water in boiler pipeline balance system | |
| CN113806885B (en) | Method for determining optimization curve of cold end of steam turbine based on seawater direct-supply condenser | |
| CN211852130U (en) | Double-ring control system for stable operation of gas extraction pump | |
| CN205066496U (en) | Energy saving cooling tower | |
| CN204757124U (en) | Unsteady flow volume and central heating system who divides family measurement | |
| CN206199002U (en) | A kind of desulfuration absorbing tower serum recycle system | |
| CN206496512U (en) | A kind of directly-heated type variable-flow hot-water heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170905 |
|
| RJ01 | Rejection of invention patent application after publication |