当前位置: Home / Faq / Small air separation FAQ /

No pressure in the cylinder before starting the air compressor of small air separation unit

No pressure in the cylinder before starting the air compressor of small air separation unit
Jul 02, 2025
Author: DEAR AST

According to the starting characteristics of the motor towing the air compressor, when the air compressor is started, its starting current is several times the current in operation. Too much starting current can have a negative impact on the machine itself, the transformer and the transmission line, so we should try to shorten the starting time and the starting current. However, if pressure exists in the cylinder before the air compressor starts, the starting torque will become larger and the starting current of the motor will be larger than no-load starting, so that it is easy to damage the air compressor or cause accidents on the power grid.

 

Dear Air Separation employs dozens of experts and technicians in machine and vessel equipment manufacturing and inspection to ensure the reliability of equipment manufacturing. We are currently setting up a joint research and exchange mechanism with domestic universities in the areas of intelligent manufacturing, intelligent operation and maintenance, engineering structural science, nano-sensing field and materials science, truly becoming a technology development institution combining academics and production in the small air separation unit and large air separation plant industry.

16

DEAR Air Separation Solve YourNo pressure in the cylinder before starting the air compressor of small air separation unitYou can also learn about otherSmall air separation FAQ about DEAR Air Separation, and solve the problem for you.
Didn’t find the problem encountered?
Please contact live chat or email for quick help.
Related FAQ
More Related FAQ
Another part of the nitrogen vaporized in the liquefier is heated up to a certain temperature in the high pressure heat exchanger and pumped out to the low pressure nitrogen press, the nitrogen separated by the gas-liquid separator is also heated up by the high pressure heat exchanger and then goes to the low pressure nitrogen press, compressed to a certain pressure by the low pressure nitrogen press and then back to the high pressure heat exchanger for heat exchange with liquid air separat...
2026.04.17
Special pressure-bearing equipment generally bears internal pressure, that will cause tensile stress inside the shell, which is called working stress. The working stress is directly proportional to the pressure and diameter, and inversely proportional to the vessel wall thickness. The axial stress is half of the circumferential stress. Therefore, for cylindrical vessels, the stress of longitudinal weld is twice that of girth weld. Because the geometric shape of the spherical shell is symmetrical to the spherical center, and the axial stress is equal to the circumferential stress in numerical value. Therefore, the wall thickness of the spherical vessel can be reduced by half as much as that of the cylindrical vessel under the same pressure and diameter.
2026.04.16
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top