The pressure ratio of each stage of the oxygen compressor is distributed according to certain principles, and it is important to consider that the exhaust temperature at each stage shall not exceed the allowable value (160 ℃). If, for some reason, the pressure ratio of each stage of the oxygen compressor changes during operation, it is inevitable that the pressure ratio of some stages will decrease and that of some stages will increase. For the stage with higher pressure ratio, the exhaust temperature will increase accordingly. In this way, since the working medium of the oxygen compressor is pure oxygen, and the oxygen at a higher exhaust temperature will greatly enhance the oxidation and corrosion of the machine parts it contacts, and also greatly increase the possibility of ignition and explosion, so this is absolutely not allowed. Therefore, if the pressure ratio of each stage of the oxygen compressor is found to be abnormal, stop the machine in time to find out the cause.
The roll welding integration independently researched and developed by DEAR Air Separation: a new pipe manufacturing process with independent innovation, developed in cooperation with Jiangsu Longsheng Plate Rolling Machine Co., Ltd. and Shandong Shuibo Welding and Cutting Co., Ltd., using one set of devices and two structures, to complete the rolling, welding, installation and removal of arc starting and stopping plates, and the rounding is completed by one workstation. The cylinder support assistance, weld seam tracking and pressing mechanism are added to the plate rolling machine to integrate the functions of the original straight seam welding machine on the plate rolling machine. At the same time, with the gantry as the carrier, the six axis manipulator is used to complete the installation, welding, removal and straight seam full welding of the arc starting and arc extinguishing plates. This process simplified the process completed by four equipment in four stations into one station and one group of equipment, which was first created by DEAR.
