Details of the forged steel cryogenic valve - its unique irreplaceable features

1. Parts and components of forged steel cryogenic valves:

Body, seat, gate, gasket, bonnet, bonnet bolt, stem, packing, cylindrical pin, joint bolt, packing gland, packing plate, nut, stem nut, lubrication gasket, locking Nut, hand wheel.

Second, the structural characteristics of the forged steel low temperature valve:

Bolted and wound gaskets and threaded joints all welded and sealed, full diameter or reduced diameter, seals with pressure smooth holes (for gate valves, ball valves), integral upper seal seat, open rod bracket type, anti-static, self The centering platen is summarized as the above several features.

Third, the six requirements for the design of forged steel low temperature valves:

1. The valve should have the ability to work for a long time in low temperature medium and ambient temperature.

2, in order to be able to use at -196 ° C low temperature, the valve is generally designed as a long valve cover.

3. The valve assembly working at low temperature cannot be lubricated, so structural measures are needed to prevent the friction parts from being scratched.

4. The low temperature medium should not have harmful effects on the operation of the wheel and the sealing performance of the packing.

5. The valve assembly that is in direct contact with the low temperature medium shall have an explosion-proof and fireproof structure.

6. Valves should not be a significant source of heat for cryogenic systems. This is because the inflow of heat, in addition to reducing the thermal efficiency, such as excessive inflow, will also cause the internal fluid to evaporate rapidly, causing abnormal pressure rise, posing a hazard.

Summarized:

The forged steel cryogenic valve is very suitable for use in the pipelines of various systems of thermal power stations, and controls the pipeline to open and close the medium. Applicable medium: non-corrosive medium such as water and steam. Compared with other valve products, forged steel valves are characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Due to the special technical characteristics and working conditions, the products also form features that cannot be replaced by other products.