In the gas industry, if the user has requirements for the pressure of oxygen, there are generally two ways to achieve it. First, through the heat exchange with liquid oxygen through a heat exchanger, the liquid oxygen is rapidly vaporized to form high-pressure oxygen. Second, the oxygen pressure is compressed to a specified pressure by an oxygen compressor. An oxygen compressor is a compressor designed to compress oxygen. Working principle: Oxygen accounts for 20% in the air, nitrogen accounts for nearly 80%, and the rest are rare gases. The oxygen generator is actually a compressor, equipped with special accessories such as molecular sieves. When working, the oxygen machine compresses and cools the air to a liquid state, and uses the different vaporization temperatures of liquid oxygen and liquid nitrogen and molecular sieves to separate them, which makes liquid oxygen, which can be bottled and sold. The by-product is nitrogen.
(1) Prevent the lubricating water from being cut off in the cylinder
Set up a distilled water cut-off alarm device, and use a liquid level control alarm system to strengthen the maintenance of the alarm device to ensure timely and accurate alarms.
(2) Prevent the mechanism from being oiled
During the installation of pipeline valves, strengthen inspection, strictly degreasing and cleaning, prevent grease from entering the cylinder, and do a good job in the management of air seals, oil scraping rings, and oil retaining rings. The service cycle of the oil slinger and other components should be kept in mind, and they should be checked and updated regularly.
(3) Prevent the generation and entry of rust
The occurrence of rust is related to the material. Due to economic reasons, preventing rust from entering has become the key, so it is necessary to install stainless steel mesh at the inlet of the oxygen compressor, and strengthen maintenance management. If there is any damage, it should be replaced in time; in addition, if conditions permit, the inlet pipeline of the oxygen compressor should be purged frequently or regularly to prevent the inner wall of the pipeline from rusting and rust deposits caused by wet oxygen, which can effectively prevent rust from entering. machine, to prevent the occurrence of explosion accidents.
(4) Prevent foreign matter from being generated or entering the cylinder
In order to prevent foreign objects from staying in the machine, strict maintenance procedures, regular inspections, equipped with experienced and responsible operators, can make rough or exact judgments when abnormal situations occur during the inspection process, so as to take effective measures to avoid the occurrence of the accident.
(5) Improve the management level, improve the quality of employees, and prevent accidents from happening
First, improve the management level and establish a set of advanced management systems, such as process inspection system, process system; responsibility system, etc.; meet the needs of production.
(6) Change valve quality and valve type to prevent accidents
A stainless steel valve core is installed on the check valve at the outlet of the YZ-33/30 oxygen compressor. In order to buffer the impact, a polytetrafluoroethylene ring is installed between the valve body and the valve core to avoid direct impact between the valve core and the valve body.
The check valve is changed from the gravity type to the replica type.
(7) Prevent alarm and interlock failure
First of all, the oxygen compressor should be regularly alarmed, inspected, maintained and maintained to ensure that the alarm and interlocking are sensitive and easy to use; The system is accurate and sensitive.