CN111021472A - Energy-saving method of secondary water supply system - Google Patents
Energy-saving method of secondary water supply system Download PDFInfo
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- CN111021472A CN111021472A CN201911241193.9A CN201911241193A CN111021472A CN 111021472 A CN111021472 A CN 111021472A CN 201911241193 A CN201911241193 A CN 201911241193A CN 111021472 A CN111021472 A CN 111021472A
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- water
- water supply
- equipment
- pump
- water pump
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
Abstract
The invention discloses an energy-saving method of a secondary water supply system, which comprises the following steps: the method comprises the following steps: determining water supply parameters according to water requirements of users; step two: performing primary configuration on the water pump according to water supply parameters; step three: the running condition of the water supply equipment is monitored on line through the monitoring equipment, the monitored data is analyzed, and the actual water demand is judged; step four: and determining water supply parameters according to the actual water demand and carrying out secondary configuration on the water pump. The water pump device is ingenious in structure, and can meet the user requirements of low survival rate and high survival rate through twice water pump configuration, so that the selection of the water pump device is more suitable for the actual water supply requirement, and the problems that the selected water pump device is insufficient in water supply due to too low power or energy consumption is too high and waste is serious due to too high filtration of the selected water pump device are avoided.
Description
Technical Field
The invention relates to the field of secondary water supply, in particular to an energy-saving method of a secondary water supply system.
Background
With the continuous promotion of urban infrastructure, the requirements on relevant laws and regulations and standard specifications of safe operation, sanitation management and public security of secondary water supply facilities are increasingly strict, and the new mode of implementing integration of construction and management and water management to surface by water supply enterprises is popularized at an accelerated speed. The scale and the quantity of secondary water supply facilities managed and managed by a water supply enterprise are rapidly increased, the types, brands and generations of the secondary water supply facilities are different, the operation stability and the intelligent level are different, the complexity of providing specialized services by secondary water supply is increased day by day, and the challenge of the water supply enterprise is how to continuously improve the level of the secondary water supply services.
In the prior art, the traditional secondary water supply mode lacks an energy-saving method for conversion according to actual water use conditions, the power of water supply equipment is excessive when the survival rate is low, the energy consumption is high, and the power of the water supply equipment is too low when the survival rate is high, so that the water supply is insufficient.
Disclosure of Invention
The invention aims to provide an energy-saving method of a secondary water supply system.
The technical scheme for realizing the purpose of the invention is as follows: an energy-saving method of a secondary water supply system comprises the following steps:
step two: performing primary configuration on the water pump according to water supply parameters;
step three: the water supply equipment is monitored on line through the monitoring equipment, monitored data are analyzed, and actual water demand is judged;
step four: and determining water supply parameters according to the actual water demand and carrying out secondary configuration on the water pump.
The first step specifically comprises the following steps:
s1, according to the water consumption end water supply equivalent, the number of users, the water consumption quota and the first use step of the residential configuration: determining water supply parameters according to water requirements of users;
the time number and the hour change coefficient, and the average outflow probability of the water using end with the water equivalent when the water is used maximally is calculated;
s2, calculating the simultaneous outflow probability of the water consumption end water supply equivalent of the pipe section according to the total water consumption end water supply equivalent on the pipe section;
s3, calculating the design flow of the pipe section according to the equivalent sum of the water supply of the user side on the pipe section and the simultaneous outflow probability;
and S5, determining the design lift of water supply according to the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, the water pressure required by the most unfavorable point and the resistance loss.
In step one, in S1, the calculation formula for calculating the average water outlet probability is:
in the formula of U0Is the average water outlet probability, q0For water ration, m is the number of users, KhIs an hourly coefficient of variation, H is the rated flow of the water equivalent used individually, NgEquivalent water is fed to the user end, and T is the number of hours of water consumption.
In step S2 of the first step, a calculation formula for calculating the simultaneous outflow probability is:
in the formula, acCalculated according to the average water outlet probability corresponding to different values, NGThe equivalent amount of water is fed to the customer end on the pipe section.
In step S3, the calculation formula for calculating the design flow rate of the pipe section is:
in step S4, the calculation formula for calculating the water supply design lift is:
Hb≥1.1Hy+Hc+∑h
in the formula, Hb is the design lift for water supply, Hy is the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, Hc is the water pressure required by the most unfavorable point, and Σ h is resistance loss.
The configuration method for performing initial configuration on the water pump according to the water supply parameters in the second step comprises the following steps:
s1, according to the property of the residential community, the early-stage survival rate and other conditions, the configuration of the water pump in the complete set is determined.
S2, selecting high-efficiency energy-saving pump type according to the water supply flow and the water supply lift required by the big pump and the small pump, wherein the working point required by water supply is positioned at the tail end of the high-efficiency area in the efficiency curve of the selected water pump.
S3, in the process of equipment complete set and control system development engineering, requirements of high survival rate in the later period are fully considered, and the caliber of an equipment pipeline, the distance between a plurality of water pumps and the like are increased.
And in the third step, the running condition of the water supply equipment is monitored on line through monitoring equipment, and main monitoring data comprise the front pool water level, the water pump inlet pressure, the water pump outlet pressure, the water supply pressure at the worst tail end, the water supply flow of the complete equipment, the running power, the current, the voltage, the frequency and the like of each water pump. The analyzing and judging the monitored data comprises the following steps: and analyzing the water supply flow change of the water supply equipment, comparing the water supply flow change with the original design flow, and determining the actual water consumption of the user. The long-term running flow point of the water supply equipment is the actual water consumption of a user, and the large flow point and the small flow point which run for a long time are considered when the complete equipment water pump unit is matched. And comparing the outlet pressure of the water pump with the variation of the water supply pressure at the most unfavorable tail end to determine the actual requirement of the water supply lift of the user. The difference between the outlet pressure and the pressure of the supplied water at the most unfavorable end is the sum of the actual standard height difference and the resistance loss, and the water supply lift can be properly reduced if the pressure of the supplied water at the end is larger than the pressure required by the most unfavorable end for a long time.
And in the fourth step, secondary configuration is carried out on the water pumps according to the actual water demand and the steps.
By adopting the technical scheme, the invention has the following beneficial effects: the water pump device is ingenious in structure, and can meet the user requirements of low survival rate and high survival rate through twice water pump configuration, so that the selection of the water pump device is more suitable for the actual water supply requirement, and the problems that the selected water pump device is insufficient in water supply due to too low power or energy consumption is too high and waste is serious due to too high filtration of the selected water pump device are avoided.
In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the following examples, wherein
Detailed Description
Example one
The energy-saving method of the secondary water supply system comprises the following steps:
step two: performing primary configuration on the water pump according to water supply parameters;
step three: the water supply equipment is monitored on line through the monitoring equipment, monitored data are analyzed, and actual water demand is judged;
step four: and determining water supply parameters according to the actual water demand and carrying out secondary configuration on the water pump.
The first step specifically comprises the following steps:
s1, according to the water consumption end water supply equivalent, the number of users, the water consumption quota and the first use step of the residential configuration: determining water supply parameters according to water requirements of users;
the time number and the hour change coefficient, and the average outflow probability of the water using end with the water equivalent when the water is used maximally is calculated;
s2, calculating the simultaneous outflow probability of the water consumption end water supply equivalent of the pipe section according to the total water consumption end water supply equivalent on the pipe section;
s3, calculating the design flow of the pipe section according to the equivalent sum of the water supply of the user side on the pipe section and the simultaneous outflow probability;
and S5, determining the design lift of water supply according to the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, the water pressure required by the most unfavorable point and the resistance loss.
In step one, in S1, the calculation formula for calculating the average water outlet probability is:
in the formula of U0Is the average water outlet probability, q0For water ration, m is the number of users, KhIs an hourly coefficient of variation, H is the rated flow of the water equivalent used individually, NgEquivalent water is fed to the user end, and T is the number of hours of water consumption.
In step S2 of the first step, a calculation formula for calculating the simultaneous outflow probability is:
in the formula, acCalculated according to the average water outlet probability corresponding to different values, NGThe equivalent amount of water is fed to the customer end on the pipe section.
In step S3, the calculation formula for calculating the design flow rate of the pipe section is:
in step S4, the calculation formula for calculating the water supply design lift is:
Hb≥1.1Hy+Hc+∑h
in the formula, Hb is the design lift for water supply, Hy is the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, Hc is the water pressure required by the most unfavorable point, and Σ h is resistance loss.
The configuration method for performing initial configuration on the water pump according to the water supply parameters in the second step comprises the following steps:
s1, according to the property of the residential community, the early-stage survival rate and other conditions, the configuration of the water pump in the complete set is determined. In specific implementation, the water supply flow is 60m3The delivery lift of the water supply is 60 m. Two sets of design flow rates of 30m are configured3H, a large pump with water supply lift of 60m and a design flow of 20m3And h, a small pump with water supply lift of 60 m.
S2, selecting high-efficiency energy-saving pump type according to the water supply flow and the water supply lift required by the big pump and the small pump, wherein the working point required by water supply is positioned at the tail end of the high-efficiency area in the efficiency curve of the selected water pump.
S3, in the process of equipment complete set and control system development engineering, requirements of high survival rate in the later period are fully considered, and the caliber of an equipment pipeline, the distance between a plurality of water pumps and the like are properly increased. The selection of the electric components and the wires and cables is also increased in grades as appropriate.
And in the third step, the running condition of the water supply equipment is monitored on line through monitoring equipment, and main monitoring data comprise the front pool water level, the water pump inlet pressure, the water pump outlet pressure, the water supply pressure at the worst tail end, the water supply flow of the complete equipment, the running power, the current, the voltage, the frequency and the like of each water pump. The analyzing and judging the monitored data comprises the following steps: and analyzing the water supply flow change of the water supply equipment, comparing the water supply flow change with the original design flow, and determining the actual water consumption of the user. The long-term running flow point of the water supply equipment is the actual water consumption of a user, and the large flow point and the small flow point which run for a long time are considered when the complete equipment water pump unit is matched. And comparing the outlet pressure of the water pump with the variation of the water supply pressure at the most unfavorable tail end to determine the actual requirement of the water supply lift of the user. The difference between the outlet pressure and the pressure of the supplied water at the most unfavorable end is the sum of the actual standard height difference and the resistance loss, and the water supply lift can be properly reduced if the pressure of the supplied water at the end is larger than the pressure required by the most unfavorable end for a long time.
And in the fourth step, secondary configuration is carried out on the water pumps according to the actual water demand and the steps.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An energy-saving method of a secondary water supply system is characterized in that: the method comprises the following steps:
the method comprises the following steps: determining water supply parameters according to water requirements of users;
step two: performing primary configuration on the water pump according to water supply parameters;
step three: the water supply equipment is monitored on line through the monitoring equipment, monitored data are analyzed, and actual water demand is judged;
step four: and determining water supply parameters according to the actual water demand and carrying out secondary configuration on the water pump.
2. The energy saving method of a secondary water supply system according to claim 1, characterized in that: the first step specifically comprises the following steps:
s1, calculating the average outflow probability of the water using end with the water equivalent when the water is used maximally according to the water using end water supply equivalent, the number of users, the water usage quota, the service hours and the hour change coefficient of the residential configuration;
s2, calculating the simultaneous outflow probability of the water consumption end water supply equivalent of the pipe section according to the total water consumption end water supply equivalent on the pipe section;
s3, calculating the design flow of the pipe section according to the equivalent sum of the water supply of the user side on the pipe section and the simultaneous outflow probability;
and S5, determining the design lift of water supply according to the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, the water pressure required by the most unfavorable point and the resistance loss.
3. The energy saving method of a secondary water supply system according to claim 2, characterized in that: in step one, in S1, the calculation formula for calculating the average water outlet probability is:
in the formula of U0Is the average water outlet probability, q0For water ration, m is the number of users, KhIs an hourly coefficient of variation, H is the rated flow of the water equivalent used individually, NgEquivalent water is fed to the user end, and T is the number of hours of water consumption.
4. The energy saving method of a secondary water supply system according to claim 2, characterized in that: in step S2 of the first step, a calculation formula for calculating the simultaneous outflow probability is:
in the formula, acCalculated according to the average water outlet probability corresponding to different values, NGThe equivalent amount of water is fed to the customer end on the pipe section.
5. The energy saving method of a secondary water supply system according to claim 2, characterized in that: in step S3, the calculation formula for calculating the design flow rate of the pipe section is:
qg＝0.2×U×∑NG。
6. the energy saving method of a secondary water supply system according to claim 1, characterized in that: in step S4, the calculation formula for calculating the water supply design lift is:
Hb≥1.1Hy+Hc+∑h
in the formula, Hb is the design lift for water supply, Hy is the standard height difference between the most unfavorable water distribution point and the water outlet pipe of the equipment, Hc is the water pressure required by the most unfavorable point, and Σ h is resistance loss.
7. The energy saving method of a secondary water supply system according to claim 1, characterized in that: the configuration method for performing initial configuration on the water pump according to the water supply parameters in the second step comprises the following steps:
s1, according to the property of the residential community, the early-stage survival rate and other conditions, the configuration of the water pump in the complete set is determined.
S2, selecting high-efficiency energy-saving pump type according to the water supply flow and the water supply lift required by the big pump and the small pump, wherein the working point required by water supply is positioned at the tail end of the high-efficiency area in the efficiency curve of the selected water pump.
S3, in the process of equipment complete set and control system development engineering, requirements of high survival rate in the later period are fully considered, and the caliber of an equipment pipeline, the distance between a plurality of water pumps and the like are increased.
8. The energy saving method of a secondary water supply system according to claim 1, characterized in that: and in the third step, the running condition of the water supply equipment is monitored on line through monitoring equipment, and main monitoring data comprise the front pool water level, the water pump inlet pressure, the water pump outlet pressure, the water supply pressure at the worst tail end, the water supply flow of the complete equipment, the running power, the current, the voltage, the frequency and the like of each water pump. The analyzing and judging the monitored data comprises the following steps: and analyzing the water supply flow change of the water supply equipment, comparing the water supply flow change with the original design flow, and determining the actual water consumption of the user. The long-term running flow point of the water supply equipment is the actual water consumption of a user, and the large flow point and the small flow point which run for a long time are considered when the complete equipment water pump unit is matched. And comparing the outlet pressure of the water pump with the variation of the water supply pressure at the most unfavorable tail end to determine the actual requirement of the water supply lift of the user. The difference between the outlet pressure and the pressure of the supplied water at the most unfavorable end is the sum of the actual standard height difference and the resistance loss, and the water supply lift can be properly reduced if the pressure of the supplied water at the end is larger than the pressure required by the most unfavorable end for a long time.
9. The energy saving method of a secondary water supply system according to claim 1, characterized in that: and in the fourth step, secondary configuration is carried out on the water pumps according to the actual water demand and the steps.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309173A (en) * | 2021-05-26 | 2021-08-27 | 苏宝炜 | Water supply system optimization method and adjustment method for community water supply system |
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Application publication date: 20200417 |