Efficiency control system and method for double-motor double-stage compression screw air compressor and equipment
A two-stage compression and control system technology, applied in mechanical equipment, pump control, machine/engine, etc., can solve the problems that the compression efficiency cannot always maintain the optimal value, the compression ratio cannot be dynamically adjusted, and the loss of transmission efficiency
Inactive Publication Date: 2021-02-19
埃尔利德(广东)智能科技有限公司
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Problems solved by technology
[0004] Since the two-stage screws are driven by gears, the speed ratio of the two-stage screws is fixed, resulting in that the compression ratio of the two stages cannot be dynamically adjusted under different loads, that is, the output flow ratio of the two-stage compressor head fixed, so that the compression efficiency cannot always maintain the optimal value; at the same time, there is also a loss of transmission efficiency during the gear transmission process
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[0043] In order to make the purpose, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0044] It should be noted that, in any embodiment of the present invention, it is used to control the efficiency of a two-motor two-stage compression screw air compressor.
[0045] refer to figure 1 , 2 , respectively showing a structural block diagram of a dual-motor two-stage compression screw air compressor efficiency control system provided by an embodiment of the present application and a structura...
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The invention provides an efficiency control system and method for a double-motor double-stage compression screw air compressor and equipment. The system comprises a controller, and the double-motor double-stage compression screw air compressor comprises a first-stage frequency conversion compressor unit, an intercooler and a second-stage frequency conversion compressor unit, all of which are sequentially arranged on a compression air path. The intercooler is electrically connected with a cooling medium control valve. The corresponding compression efficiency is adjusted according to the comparison result of the real-time first-stage exhaust pressure and the preset first threshold value, the comparison result of the real-time second-stage exhaust pressure and the preset second threshold value and the comparison result of the real-time second-stage intake temperature and the preset third threshold value, and therefore the compression efficiency is made at the optimal value; and the rotating speeds of two stages of motors can be independently controlled, the compression ratios of two stages of compressors can be distributed according to the characteristics of the compressors and a cooling system, and efficient control over the compression efficiency is achieved.
Description
technical field [0001] The present application relates to the field of efficiency control of air compressors, in particular to an efficiency control system, method and equipment of a dual-motor dual-stage compression screw air compressor. Background technique [0002] Most screw air compressors are twin-screw air compressors, which are divided into two series: single-stage compression and two-stage compression. Because the compression of each stage of the two-stage compressor is smaller than that of the single-stage compressor, the internal leakage of the compressed gas is low, and the gas production is generally larger than that of the single-stage compressor. [0003] At present, there is a trend in the domestic market that two-stage compression screw air compressors gradually replace single-stage compressors; at present, in the screw head of two-stage compression, the two-stage screws are driven by gears. [0004] Since the two-stage screws are driven by gears, the speed...
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IPC IPC(8): F04C28/00F04C28/08F04C28/28F04C29/04
CPCF04C28/00F04C28/08F04C28/28F04C29/04F04C2270/185F04C2270/195F04C2270/585
Inventor 林海杰吴敏涛徐培钰
Owner 埃尔利德(广东)智能科技有限公司