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Cascade flow regulation pump power energy-saving method

A technology of flow regulation and pump power, which is applied to components, pumps, and pump components of pumping devices for elastic fluids. The effect of resource waste, stable pressure, and stable water supply effect

Pending Publication Date: 2021-11-02
安徽智引力智慧水务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings of unstable water supply effect, large pressure fluctuations and large consumption of useless functions in the prior art, and propose a method for energy-saving pump power with cascade flow adjustment

Method used

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  • Cascade flow regulation pump power energy-saving method
  • Cascade flow regulation pump power energy-saving method
  • Cascade flow regulation pump power energy-saving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see Figure 1-3 , a cascade flow regulation pump power saving method, comprising the following steps:

[0038] Step A: Mechanism assembly, the mechanism includes water tank 1, user water supply pipeline 2, pump A3, pump B4, pump C5 and pump D6, four shunt pipes are connected between water tank 1 and user water supply pipeline 2, pump A3, pump B4, Pump C5 and pump D6 are respectively connected to four distribution pipes, and pump A3, pump B4, pump C5 and pump D6 are respectively connected to user water supply pipeline 2, and pump A3, pump B4, pump C5 and pump D6 have a design flow rate of 60 m3 / 11KW, 7.5KW, 3.0KW and 1.1KW under the water supply environment with a head of 90 meters and 90 meters head respectively, and the end of the user water supply pipe 2 is connected with an electromagnetic flowmeter that can extract instantaneous flow and total flow;

[0039] Step B: The user uses water, the equipment is started, and a pump of 7.5KW is started according to the conv...

Embodiment 2

[0053] refer to Figure 1-2 , in this embodiment, it is basically the same as Embodiment 1. What is more optimized is that in step A, the lifts of pump A5, pump B6, pump C7 and pump D8 in a water supply environment with a design flow rate of 60 cubic meters per hour and a lift of 90 meters The same is 90 meters, and the flow rate of single pump accounts for the total flow rate of pump A5: 75% (45 cubic meters / hour); pump B6: 45% (25 cubic meters / hour); pump C7: 25% (15 cubic meters / hour) ;Pump D8: 10% (6 cubic meters / hour), effectively avoiding that in the case of one pump being damaged, the water supply can still meet the basic water supply design requirements in accidents, that is, when the largest pump fails (extremely unfavorable), the rest of the pumps The total flow reaches 80% of the design flow.

Embodiment 3

[0055] In step D, the motor models corresponding to pump A3, pump B4, pump C5, and pump D6 are YE2-160M-4, YE2-132M-4, YE2-100L2-4, and YE2-90S-4 respectively. Working together, compared with the operation of three 7.5kw motors, the required energy loss of the motors is greatly reduced, making the device more energy-saving.

[0056] step four

[0057] The motor output power of pump A3, pump B4, pump C5 and pump D6 is proportional to the cube of the speed, then: Among them, P1: the power of the motor at power frequency, P2: the power of the motor at variable frequency; N1: the speed of the motor at power frequency, N2: the speed of the motor at variable frequency, the power consumption of each water interval can be directly calculated through the formula.

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Abstract

The invention discloses a cascade flow regulation pump power energy-saving method which comprises the following steps that A, a mechanism is assembled and comprises a water tank, a user water supply pipeline, a pump A, a pump B, a pump C and a pump D, four shunt pipes are connected between the water tank and the user water supply pipeline, the pump A, the pump B, the pump C and the pump D are respectively communicated with the four shunt pipes, the pump A, the pump B, the pump C and the pump D are respectively communicated with the user water supply pipeline, and the tail end of the user water supply pipeline is connected with an electromagnetic flowmeter capable of extracting instantaneous flow and total flow; B, a user uses water; C, the electromagnetic flowmeter calculates the water flow; D, delay judgment is conducted; and E, water is supplied in a split-flow mode. The pressure stability in the water supply process for the user is ensured, flow comparison is performed on the basis of the pressure stability, so that the stable water supply effect is ensured, idle work energy consumption is reduced to the maximum extent, resource waste is reduced, and the use requirements of people in the water supply process are met.

Description

technical field [0001] The invention relates to the technical field of water supply equipment, in particular to a method for energy-saving of cascaded flow regulating pump power. Background technique [0002] The earliest urban water supply, due to the low floor, adopts the water tower water supply method. With the development of the times, the floors are getting higher and higher, and the water consumption is increasing. The water tower type has been eliminated, and it has evolved into the current secondary booster equipment. The core component of the secondary booster equipment is the booster pump; The earlier secondary booster equipment, for water pump control, only operated at power frequency (that is, 50HZ three-phase power supply). With the pressure gauge at the end, the pressure reached the shutdown, and the pressure dropped to a certain level. With the popularization and development of electronic technology in the century, the popularization of the use of frequency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00F04B49/06F04B23/04F04B53/00F04B53/16
CPCF04B51/00F04B49/06F04B23/04F04B53/00F04B53/16
Inventor 吴卫国刘军
Owner 安徽智引力智慧水务有限公司
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