Laboratory clean pipeline installation conditions, what are the installation requirements for clean

What are the conditions for the installation of clean piping in the laboratory? Renhe and Purification pointed out that the pipeline is generally polished pipe, the pipe is made of argon gas heating treatment, and the pipeline is processed by electrolytic grinding. Its inner and outer surfaces are extremely bright.

In addition to meeting the requirements of conventional industrial pipelines for welds, the welding of clean pipelines also requires that the inner and outer surfaces of the pipes are not polluted during welding, and the inner and outer surfaces of the welds must be basically consistent with the brightness of the base metal.

Most of the contemporary laboratory specialty gas pipeline installation process is based on safety and efficiency factors, regardless of economic considerations, and centralized gas supply systems are becoming more and more common and become a reliable and continuous source of high-purity gases in today's laboratory equipment. The gas is then transported through a piping system to the plant, where pressure and flow can be easily regulated via a point-of-use secondary pressure reducer mounted on the bench.

Clean pipe installation features:

It is characterized by four main aspects: safety, economy, purity and ergonomics.

Safety: Even though the cylinders are still being supplied, they are placed in a safe area outside the work area and can be shut off in an emergency by the user via the equipped remote shut-off system**. The proper arrangement of the cylinder storage area allows for a safe distance between flammable and combustible containers.

The operation of the cylinders must be carried out by trained and qualified personnel to reduce the chance of major accidents.

Economy: Building a centralized cylinder room can save limited laboratory space, and there is no need to cut off the gas when replacing the cylinders, ensuring the continuity of the gas**. Users only need to manage fewer cylinders and pay less cylinder rent because all points of use using the same gas come from the same source.

This will ultimately result in less shipping costs, less residual gas in empty cylinders returned to the gas company, and good cylinder management.

Purity: Purging pressure reducer panels maintain the specified purity of gases, and reduced cylinder replacement frequency results in a reduced chance of impurities entering the system.

Ergonomics: The centralized piping** system allows the gas outlet to be placed at the point of use, allowing for a more rational workplace design.

The above is the "laboratory clean pipe installation conditions?" If you have any questions, you can consult Anhui people and purification.

The installation conditions for clean pipes in the laboratory are as follows:

1. Air inlet and water inlet pipelines.

1. Determine the cleanliness level or application scenarios, such as semiconductors, electronics, medicine, operating rooms, ICUs, etc.

2. Double-sided polished stainless steel pipes should be used for management.

3. If the pipeline is welded, it must be double-sided laser welding. In this way, the smoothness of the weld can be guaranteed.

4. Both ends of the pipeline installation process must be blocked to avoid environmental pollution of the inner wall of the pipeline.

5. The input terminal must fully filter the air source and water source.

6. Common air purification methods: QCP filtration, freezing filtration, gas tank drainage oil, etc.

7. Common water purification methods: mechanical filtration, sand and carbon filtration, semi-permeable membrane, mixed bed, EDI, etc.

2. Exhaust and drainage pipes.

1. Select materials according to the nature of the substances to be discharged, such as pH and temperature.

2. Consider the flow rate.

3. Installation method to avoid backflow pollution of air inlet or water inlet.

1. The pipeline laying should meet the design requirements, and when the design does not require, the pipeline for transporting dry gas should be installed horizontally; The pipeline for transporting moist gas should be installed with a slope of not less than that, and the slope should be sloped towards the condensate collector;

2. The connection of the pipeline is welded, and tungsten argon arc welding is used to lay the foundation, and the manual arc welding cover surface process is adopted. Stainless steel pipe welding or spot solid welding should take argon filling protection measures in the pipe;

3. Gas pipelines and equipment, valves and other accessories should be connected by flanges or threads. The packing of the threaded joint must be made of PTFE film;

4. For gas pipelines with grounding requirements, conductive crosswires must be welded between the flanges, and the wire cross-section and welding lap length should meet the design requirements, and the solder joints must be firm and reliable.

There are many requirements for clean room gas pipeline engineering, including equipment selection, pipeline material, pipeline welding, connection between equipment valves and pipe fittings, and pipeline laying. Gas pipeline works are dangerous and non-professionals are advised not to operate them yourself.

Recommend several representative clean room gas pipeline engineering companies 1, Chinese Academy of Sciences.

2. Gaspark.

How to properly install ducts in a cleanroom? Renhe Purification introduces you to the clean pipe installation process.

1) Due to the particularity of the water for injection system, its connection not only requires welding connection as much as possible, but also is fully automatic inert gas shielded orbital welding, at the same time, due to the limited height of the technical interlayer, various pipelines such as air ducts in the interlayer are intricate, and the welding equipment is difficult to display its skills, first of all, each welding place is required to have a certain welding space; Or try not to arrange other pipelines in parallel around the WFI piping area when designing.

2) In addition to the main air duct, which can be constructed first, the installation of water for injection piping system should be given priority before the construction of other pipelines; At the same time, it is necessary to protect other pipelines during construction.

3) The WFI system in the clean room will be constructed after the clean room interval is completed.

4) After the installation and before the system pressure test, the inside of the pipeline should be kept dry to avoid the inner wall of the pipeline being polluted by various particles generated on site, and if the ferrous particles encounter moisture in the pipeline, it will soon produce imperceptible corrosion.

That's all there is to it: "How to properly install the piping in a cleanroom?" If you have any questions, you can consult Anhui people and purification.