Laboratory gas pipeline engineering is the laboratory gas pipeline transportation system, which includes operating valves, pressure reducing equipment, filters, pressure gauges or pressure sensors, pipe fittings and other parts. The parts from the gas storage device to the use of production equipment belong to the gas piping system. As a professional field in the construction of laboratory decoration, it is a fairly professional knowledge. In many modern laboratories, in order to meet the experimental functions, a variety of analytical instruments are needed, such as gas chromatography, atomic absorption, gas-mass spectrometry, ICP, etc., among which these instruments need to use high-purity gas, traditional The method is to adopt the mode of independent steel cylinders for decentralized gas supply. In this gas supply mode, each instrument and equipment is equipped with a gas cylinder separately to meet the use of each instrument and equipment. However, with the continuous increase in laboratory investment in recent years, the equipment The rapid increase and the increase in gas consumption year by year resulted in the creation of a centralized gas supply pipeline system.

The central gas supply pipeline system stores all the gas used in the gas storage room in accordance with the requirements of the national standard, and realizes centralized transportation to form a central gas supply system. The system adopts one-to-one, one-to-many, multi-to-many, and multi-to-many pipeline gas transmission modes, which can realize segmented control when one tow and many times, and can realize switching control when multiple tow and many times; and can guarantee The standard gas flow, the pressure stability and the value transfer do not change, which meets the technical requirements of the analysis and testing equipment for the gas used; the indoor gas cylinder gas supply system is directly controlled and saved by the gas pressure in the laboratory where the supply gas flow is not large. The cost also protects laboratory staff from toxic and harmful gases in the experiment.

Key points of gas pipeline construction

1. The gas pipeline of the central station is introduced through the service column. All gas pipeline connections are seamlessly welded.

2. All gas pipelines have suitable control valves on the workbench, which is easy to operate.

3. The gas pipeline is made of stainless steel, and there is a purification device on the pipeline to filter out impurities and moisture. This purification device is connected in parallel with a pipeline and isolated by a separate valve, so that the filter device can be repaired without affecting the normal use.

4. The compressed air introduced into the general analysis laboratory needs at least 2 compressed air cylinders to back up.

5. There is a semi-automatic regulating valve between the used gas cylinder and the spare gas cylinder to control.

6. All gas pipelines are high quality, fully annealed, seamless stainless steel SS-31EL.

7. The gas pipeline needs to have a safety pressure release valve, a pressure regulating valve, and a pressure gauge to indicate the gas pressure.

8. All oxygen pipelines must be completely cleaned to make them suitable for oxygen use.

9. Flammable and oxidizing gas exhaust pipes cannot be combined together. The coil is made of stainless steel, which has sufficient toughness.

10. The safety relief valve must be marked to indicate the pressure release level. All pressure reducing valves need to be connected to an exhaust line leading out of the gas storage area.

Laboratory gas pipeline engineering involves the design of gas pipelines, material selection, engineering installation, and acceptance. It is a highly professional job. Because the laboratory is usually equipped with many precision large instruments and equipment, if the engineering material is unqualified , The construction process is not precise, and leakage may occur during use, and impurities may be introduced to reduce the purity of the high-purity gas, which directly causes the equipment to fail to operate normally. It must be designed and constructed by a professional company. During the construction of CEIDI Xidi’s EPC general contracting project, the gas pipeline project will be constructed and installed by CEIDI Xidi’s professional engineers to ensure safety.