The laboratory gas circuit system is mainly composed of gas source switching system, pipeline system, pressure regulating system, gas consumption point, monitoring and alarm system. For some flammable and explosive gases, such as hydrogen and acetylene, there may be slight differences in the design and construction process, and gas flashback preventers and other safety control devices must be added. So what are the standards for the design of laboratory gas circuit system?
In the design of gas pipeline, the following points shall be achieved:
1. The pipe diameter shall be determined according to the pressure value and consumption at the instrument end.
2. All gas pipelines are composed of high-quality, fully annealed and seamless stainless steel pipes.
3. All pipelines, valves and pressure gauges are made of high-quality all stainless steel and are standard accessories.
4. The gas pipeline of the instrument rests against the back of the instrument table.
5. Flammable gases, such as acetylene and hydrogen, need to be separated from other gases and introduced separately.
Laboratory planning and design is an essential part of laboratory construction, and its importance is self-evident.
1、 Fire prevention
There will be all kinds of equipment in the laboratory, such as alcohol lamp, electric stove and so on. These have certain potential safety hazards. Therefore, when we use these things, we need to pay attention to the three basic elements of combustion: ignition source, combustibles and combustion aids, so as to avoid fire caused by combustion aids near the fire source.
Almost all laboratories will use toxic reagents, so when we use these toxic substances, we must find out the physical and chemical characteristics, use methods and emergency measures of the poisons. During the laboratory design of laboratory planning, drugs and reagents shall be labeled according to the content. In case of highly toxic substances, the "five pairs" system shall also be done well.
Every laboratory will have pure water, high-purity water or water making equipment, such as a distiller. The operator may forget to turn off the tap during the operation, or forget to turn off after the soil water is cut off. Therefore, it is necessary to take waterproof measures when planning the laboratory.
4、 Anti electric shock
Starting from the electrical equipment, the power socket must be grounded. If it is a high-power instrument and electrical equipment, it also needs to be connected to the air switch. The laboratory planning should do a good job in leakage protection. In addition, when using electrical equipment, do not touch the switch with a hand with water. When overhauling the equipment, do the three steps of shutdown, power off and listing.
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