CN108755832B - Intelligent building energy-saving type centrifugal pump set water supply system and use method thereof - Google Patents
Intelligent building energy-saving type centrifugal pump set water supply system and use method thereof Download PDFInfo
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- CN108755832B CN108755832B CN201810507503.6A CN201810507503A CN108755832B CN 108755832 B CN108755832 B CN 108755832B CN 201810507503 A CN201810507503 A CN 201810507503A CN 108755832 B CN108755832 B CN 108755832B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000013461 design Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 description 3
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
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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 or valves, in the pipe systems
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Abstract
The invention relates to the technical field of water pumps, in particular to an energy-saving type centrifugal pump set water supply system for an intelligent building and a using method thereof, wherein the energy-saving type centrifugal pump set water supply system comprises a first pump, a second pump, a third pump and an intelligent processing controller, wherein the first pump and the second pump are arranged in parallel through pipelines, a branch formed by the parallel connection of the first pump and the second pump is connected with the third pump in series, and a first valve and a second valve are respectively connected in series on corresponding branches of the first pump and the second pump; the intelligent processing controller completes the working condition calculation of each pump through the flow and the lift parameters required by user definition, and the high-efficiency area synchronously deflects according to the working condition points required by the user.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to an energy-saving type centrifugal pump set water supply system for an intelligent building and a using method thereof.
Background art:
energy utilization is always the key subject of scientific research of all countries in the world, the human society is continuously developed, the energy-saving consciousness of people is continuously improved, and the energy conservation becomes a hard standard for measuring an energy consumption industry. The water pump industry accounts for about 10% of the total amount of the whole electric power energy, energy conservation is a long-standing topic of the water pump industry, along with the high-speed development of the modern electronic computer technology, the new technology is born and matured, so that the whole pump industry reaches a new development level, and high efficiency, intellectualization and diversification become a new direction in the whole field. Traditional inefficient hydraulic models are replaced by efficient hydraulic models, labor resources are intelligently released and the rate of human error is reduced, pump delivery media and structural design continue to become close to real life, which can be said to change technology and life.
In the process of urbanization, the height of the floor is continuously increased, the requirement on a building water supply system is continuously improved, and the building water supply system has the distinct characteristics that: strong seasonality, continuous increase of water consumption and high energy consumption. The centrifugal pump is a core part of a building water supply system, and the running condition of the centrifugal pump dominates the conveying efficiency of the whole water supply system. The traditional high-efficiency centrifugal pump can solve the problem of high energy consumption of a building water supply system to a certain extent, but is limited by the design level at the present stage and cannot solve the problem of self-moving of a high-efficiency area, so that the energy-saving problem of the building water supply system cannot be fundamentally solved.
The invention content is as follows:
the invention overcomes the defects of the prior art and provides an energy-saving centrifugal pump set water supply system for an intelligent building and a using method thereof.
The technical problem to be solved by the invention is realized by adopting the following technical method: an energy-saving centrifugal pump set water supply system for an intelligent building comprises a first pump, a second pump, a third pump and an intelligent processing controller, wherein the first pump and the second pump are arranged in parallel through a pipeline, and a branch formed by connecting the first pump and the second pump in parallel is connected with the third pump in series;
the branch circuits corresponding to the first pump and the second pump are respectively connected with a first valve and a second valve in series;
the intelligent processing controller is respectively connected with the first pump, the second pump and the third pump and adjusts the running state of each pump, and the intelligent processing controller completes the working condition calculation of each pump through the flow and the lift parameters required by user self definition, so that the high-efficiency area synchronously deflects according to the working condition points required by the user.
In this application, the use method of intelligent building energy-saving centrifugal pump package water supply system includes:
s1: the method comprises the following steps that a user hopes to obtain a large flow point, the intelligent processing controller connects a pump I and a pump II in parallel, the rotating speed of a pump III is controlled to be zero, and meanwhile, a new rotating speed value calculated by the intelligent processing controller for ensuring that the pump I and the pump II run in a high-efficiency area is obtained according to a set relational expression of a user input flow value Qu and a design point rotating speed value nd of the parallel pumps, wherein the relational expression of the user input flow value Qu and the design point rotating speed value nd of the parallel pumps is as follows:
s2: the method comprises the following steps that a user hopes to obtain higher lift, the intelligent processing controller connects a pump I or a pump II with a pump III in series, the rotating speed of the pump I or the pump II is zero, a valve on a corresponding branch is closed, and meanwhile, a new rotating speed value calculated by the intelligent processing controller for ensuring the operation of the pump I or the pump II and the pump III in a high-efficiency area is obtained according to the set relation between a user input lift value Hu and a design point rotating speed value nd of the series pump, wherein the relation formula of the user input lift value Hu and the design point rotating speed value nd of the series pump is as follows:
s3: when a user input flow value Qu and a user input lift value Hu required by a user are in a proportional relation with a design point parameter, the method is directly realized by single pump frequency conversion, namely:
in the formula:
k h the compensation value of the operating condition is obtained, the descending amplitude of the original performance curve in the value range (1.01-1.04) is large, and the descending amplitude of the performance curve is small;
n d-design point rotational speed value, r/min;
n c-the rotation speed value, r/min, calculated by the intelligent processing controller;
Q u-user input flow value, m3/h；
Q dDesign point rated flow value, m3/h；
H u-user input of lift value, m;
H d-design point nominal head, m;
compared with the prior art, the beneficial effect of this application is: according to the method, the intelligent processing controller is connected with the 3 pumps respectively to adjust the operation condition of the centrifugal pump, the calculation of the working condition of the centrifugal pump is completed through the flow and the lift parameters required by user definition, the high-efficiency area synchronously deflects according to the working condition points required by the user, and therefore the purpose of intelligent energy conservation is achieved.
Description of the drawings:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of the connection of the pumps of the present invention;
in the figure: 10 to pump one; 11 to a first valve; 20-pump II; 21 to a second valve; 30-pump III; 40-an intelligent processing controller;n cthe rotating speed value calculated by the intelligent processing controller,Q uuser input flow value, m3/h；H u-user input lift value, m.
The specific implementation mode is as follows:
in order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further clarified with the specific embodiments.
Example 1:
as shown in fig. 1 and 2, the energy-saving centrifugal pump set water supply system for the intelligent building comprises a first pump 10, a second pump 20, a third pump 30 and an intelligent processing controller 40, wherein the first pump 10 and the second pump 20 are arranged in parallel through a pipeline, and a branch formed by connecting the first pump 10 and the second pump 20 in parallel is connected with the third pump 30 in series; the branch corresponding to the first pump 10 and the branch corresponding to the second pump 20 are respectively connected with a first valve 11 and a second valve 21 in series; the intelligent processing controller 40 is respectively connected with the first pump, the second pump, the third pump, the fourth pump, the fifth pump, the sixth pump, the seventh pump, the sixth pump, the seventh pump, the sixth pump.
Example 2:
the structure of this embodiment is basically the same as the first embodiment, and the same parts are not described again, except that: also discloses a use method of the energy-saving centrifugal pump set water supply system for the intelligent building, which comprises the following steps:
s1: the method comprises the following steps that a user hopes to obtain a large flow point, the intelligent processing controller connects a pump I and a pump II in parallel, the rotating speed of a pump III is controlled to be zero, and meanwhile, a new rotating speed value calculated by the intelligent processing controller for ensuring that the pump I and the pump II run in a high-efficiency area is obtained according to a set relational expression of a user input flow value Qu and a design point rotating speed value nd of the parallel pumps, wherein the relational expression of the user input flow value Qu and the design point rotating speed value nd of the parallel pumps is as follows:
s2: the method comprises the following steps that a user hopes to obtain higher lift, the intelligent processing controller connects a pump I or a pump II with a pump III in series, the rotating speed of the pump I or the pump II is zero, a valve on a corresponding branch is closed, and meanwhile, a new rotating speed value calculated by the intelligent processing controller for ensuring the operation of the pump I or the pump II and the pump III in a high-efficiency area is obtained according to the set relation between a user input lift value Hu and a design point rotating speed value nd of the series pump, wherein the relation formula of the user input lift value Hu and the design point rotating speed value nd of the series pump is as follows:
s3: when a user input flow value Qu and a user input lift value Hu required by a user are in a proportional relation with a design point parameter, the method is directly realized by single pump frequency conversion, namely:
example 3:
selecting the performance parameters of 3 pumps as flowQ d=90m3H, liftH d=80m, speed of rotationn d=2950r/min, the original performance curve has large reduction range and is required by usersFlow rateQ u=150m3And/h, and meanwhile, the head fluctuation is not large. According to this patentQ u=1.67Q dTherefore, the first pump and the second pump are used in parallel, the third pump stops running, meanwhile, the intelligent processing controller can calculate to obtain a new pump running rotating speed of 2684r/min according to a formula, and the corresponding lift change condition is as follows: the lift of the centrifugal pump is reduced after the centrifugal pump is connected in parallel and the variable frequency is reduced in speed, but the centrifugal pump is operated towards a small flow area according to the corresponding operation working condition of the centrifugal pump connected in parallel, the lift of one pump is increased, the reduction value of the lift can be almost offset due to the fact that the high-efficiency area is operated through the variable frequency, and therefore the change amplitude of the lift of the whole system is within an acceptable range.
The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The use method of the energy-saving centrifugal pump unit water supply system for the intelligent building is characterized by comprising the following steps of:
s1: when a user wants to obtain a large flow point, the intelligent processing controller connects the first pump and the second pump in parallel, controls the rotating speed of the third pump to be zero, and simultaneously controls the flow value Q according to the set user input flow valueuAnd the design point speed value n of the parallel pumpdObtaining a new rotational speed value calculated by the intelligent process controller ensuring that the first pump and the second pump operate in the high-efficiency region, wherein the user inputs the flow value QuAnd the design point speed value n of the parallel pumpdThe relation of (A) is as follows:
s2: when a user wants to obtain a higher lift, the intelligent processing controller connects the pump I or the pump II with the pump III in series, the rotating speed of the pump I or the pump II is zero, the valve on the corresponding branch is closed, and meanwhile, the user inputs a lift value H according to the set useruAnd design point speed n of series pumpdThe relation between the first pump and the second pump obtains a new rotating speed value calculated by an intelligent processing controller which ensures that the first pump or the second pump and the third pump operate in a high-efficiency area, wherein a user inputs a head value HuAnd design point speed n of series pumpdThe relation of (A) is as follows:
s3: when the user inputs the flow value QuAnd user input lift value HuWhen the frequency of the pump is proportional to the parameters of the design point, the frequency conversion is directly realized by a single pump, namely:
in the formula:
K η the compensation value of the operating condition is obtained, the descending amplitude of the original performance curve in the value range (1.01-1.04) is large, and the descending amplitude of the performance curve is small;
n d-design point rotational speed value, r/min;
n c-the rotation speed value, r/min, calculated by the intelligent processing controller;
Q u-user input flow value, m3/h；
Q dDesign point rated flow value, m3/h；
H u-user input of lift value, m;
H ddesign point nominal head, m.
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| WO2006012916A1 (en) * | 2004-08-06 | 2006-02-09 | Ecolab Inc. | Dosing system for dosing of a liquid additive into a pressurized water supply line |
| CN105492772A (en) * | 2013-04-12 | 2016-04-13 | 滨特尔泵集团公司 | Water booster control system and method |
| CN105840480A (en) * | 2016-05-24 | 2016-08-10 | 史仁朋 | Closed type four-stage series-parallel connection pump station system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2210152A2 (en) * | 2007-10-23 | 2010-07-28 | Picca Automation A/s | Method and pump management system for optimizing the energy consumption in a running fluid transporting pipe system with pumps |
| CN202767180U (en) * | 2012-06-26 | 2013-03-06 | 广西佛泵科技有限公司 | High-rise frequency-conversion water supply device |
| CN104846901A (en) * | 2014-10-25 | 2015-08-19 | 青岛万力科技有限公司 | High-rise partitioned tandem water supply equipment |
| CN107368048B (en) * | 2017-06-27 | 2020-07-03 | 江苏大学镇江流体工程装备技术研究院 | Design method of underground water supply pump station structure control system |
| CN207392309U (en) * | 2017-08-30 | 2018-05-22 | 戚长胜 | Water pump series-parallel connection combines multi-region water supply installation |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246186A (en) * | 1998-03-06 | 1998-09-14 | Hitachi Ltd | Aqueduct water feed device and its pump control method |
| WO2006012916A1 (en) * | 2004-08-06 | 2006-02-09 | Ecolab Inc. | Dosing system for dosing of a liquid additive into a pressurized water supply line |
| CN105492772A (en) * | 2013-04-12 | 2016-04-13 | 滨特尔泵集团公司 | Water booster control system and method |
| CN105840480A (en) * | 2016-05-24 | 2016-08-10 | 史仁朋 | Closed type four-stage series-parallel connection pump station system and control method thereof |
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Denomination of invention: An energy-saving centrifugal pump set water supply system for intelligent buildings and its application method Effective date of registration: 20221212 Granted publication date: 20200828 Pledgee: Anhui Ma'anshan Rural Commercial Bank Co.,Ltd. Pledgor: SANLIANPUMP INDUSTRY Co.,Ltd. Registration number: Y2022980026259 |
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