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Energy-saving method for load balancing of multiple centrifugal air compressors in parallel operation

An operating load, air compressor technology, applied in mechanical equipment, machines/engines, non-variable-capacity pumps, etc., can solve the problems of large load fluctuations at the gas end, large emission, low overall electrical conversion efficiency, etc. System power consumption, eliminating the effect of dissipation

Active Publication Date: 2022-03-08
西安格睿能源动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Advantages of centrifugal air compressor: compact equipment structure, large displacement, high quality compressed air; Disadvantages: changes in displacement have a great impact on mechanical efficiency, surge phenomenon is prone to occur during start and stop, and the gearbox is noisy, etc.
[0004] At present, the energy waste of the centrifugal air compressor system is serious, and the overall electrical conversion efficiency is low
The configuration and operation of the centrifugal air machine do not match the load (only for the purpose of maintaining pressure), and the emission is large
In the operation of multiple air compressors, due to the large fluctuation of the load at the gas end, the air compressor will inevitably have a large amount of emission during operation, resulting in a great waste of energy

Method used

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  • Energy-saving method for load balancing of multiple centrifugal air compressors in parallel operation
  • Energy-saving method for load balancing of multiple centrifugal air compressors in parallel operation

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 as figure 1 As shown, the method of load balancing and energy saving of multiple centrifugal air compressors running in parallel is implemented according to the following steps:

[0029] Step 1. Connect multiple centrifugal air compressors in parallel to the centralized control system in the control room;

[0030] Step 2. Adjust the pressure value of the centrifugal air compressor, so that P 1 =P 2 =P 3 =. . . . P n =P; where P 1 ,P 2 …P n It is the setting value of the outlet pressure of the centrifugal air compressor; P is the system demand pressure value (initial pressure value);

[0031] Step 3. Adjust the number of switches of the centrifugal air compressor so that in Is the sum of the current Ii of the centrifugal air compressors running in parallel; I 0 is the maximum current of the parallel centrifugal air compressor, α is a multiple;

[0032] Step 4. Make the difference between the maximum current of the air compressors running in par...

Embodiment 2

[0044] Embodiment 2, the difference between this example and embodiment 1 is:

[0045] The value of P in step 1 is 0.8Mpa;

[0046] The value of α in step 3 is 0.4;

[0047] The value of B in step 4 is 20A;

[0048] The value of Δp in step 5 and step 6 is 0.01Mpa.

Embodiment 3

[0049] Embodiment 3, the difference between this example and embodiment 1 is:

[0050] The value of P in step 1 is 0.6Mpa;

[0051] The value of α in step 3 is 0.5;

[0052] The value of B in step 4 is 10A;

[0053] The value of Δp in step 5 and step 6 is 0.03Mpa.

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PUM

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Abstract

The invention discloses a load balancing and energy-saving method for parallel operation of multiple centrifugal air compressors, comprising the following steps: connecting multiple centrifugal air compressors in parallel to a centralized control system in a control room; adjusting the pressure value of the centrifugal air compressors, Order P 1 =P 2 =P 3 =. P n =P; adjust the number of switches of the centrifugal air compressor so that the difference between the maximum current of the air compressors running in parallel and the minimum current of the air compressors running in parallel is less than the load balance constant B, that is, max(Ii)-min(Ii)

Description

technical field [0001] The invention belongs to the technical field of energy consumption of centrifugal air compressors, and relates to a load balancing and energy-saving method for parallel operation of multiple centrifugal air compressors. Background technique [0002] The air compressor system refers to the system that can compress the air at atmospheric pressure, convert the mechanical energy of the motor into gas pressure energy, and output the power of the gas source at a higher pressure; the compressed air system is composed of a compressor, a dryer , gas storage tanks and users. [0003] Advantages of centrifugal air compressor: compact equipment structure, large displacement, high quality compressed air; Disadvantages: changes in displacement have a great impact on mechanical efficiency, surge phenomenon is prone to occur during start and stop, and the gearbox is noisy, etc. . [0004] At present, the energy waste of the centrifugal air compressor system is serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
CPCF04D27/005
Inventor 卢金玲王维王泉张建磊贾晓刚张乐福肖礼报
Owner 西安格睿能源动力科技有限公司
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