Pressure lock
Pressure lock in the protective concrete shell of the Dodewaard nuclear power plant
A pressure lock is a hermetically sealable space between two different pressure areas , which enables you to switch from one to the other without pressure equalization between the two areas .
The pressure lock is used to transfer gases, liquids and solids in and out. The best known, however, is the use for people who stay in places with a higher or lower pressure than the normal air pressure of the earth's surface. It is also often used to prevent the negative effects of compression and decompression . We therefore find pressure locks z. B.
- in the case of submarines, to leave or enter while diving;
- in space missions to leave or enter the missile;
- when using diving bells , diving shafts and diving bell ships ;
- with decompression chambers ;
- during underwater work on lock gates ;
- in the construction of tunnels for subways, if these are put under increased pressure to prevent water ingress;
- also when working on the sewer system, even when only using machines;
- in underground mining for supply bombs and rescuing people;
- with air domes .
Since this is mostly a matter of equalizing the pressure of the breathable air, the lock is often referred to as an air lock .
See also
Individual evidence
- ^ Wasser- und Schifffahrtsdirektion Nord (Ed.): Annual Report 2001 ( Memento of September 29, 2007 in the Internet Archive ) (PDF; 6.0 MB) . Kiel, October 2002
- ^ City of Munich building department: Olympiapark Nord underground station .
- ↑ unitracc.com: Sewer rehabilitation on St. Pauli: 515 meters of pipe liner with an egg profile . April 13, 2005