Generators provide energy by transforming kinetic energy from turbines into electrical energy. A byproduct of this process is heat, which results in the need for cooling the generator. This is especially so in the case of large power generators. One highly efficient cooling process for large power generators involves the use of Hydrogen (H2). This gas has very good heat removal properties when used as a coolant. However, it is also a highly explosive gas.
We provide safe flange-type penetrations for instrumentation and control purpose, as well as thermocouple penetrations or combinations of both, to enable the productivity of energy facilities for many decades.
SCHOTT Eternaloc® penetration modules for energy generators consist mainly of:
SCHOTT Eternaloc™ penetration modules provide a number of unique product features:
Additionally, the high conductor density (with up to 406 conductors per penetration) allows for a reduction in the quantity of penetrations needed.
These penetrations are required in any type of power plant with high power electrical generators.
The glass preform, metal shell and conductor pins or tubes for thermo-couples, made of a nickel-iron alloy, are assembled on a fixture. The complete assembly is heated to a temperature where the glass becomes free-flowing and fills all the gaps between the metal parts.
During the cooling process, the glass solidifies at its set point. Upon further cooling, the outer metal housing shrinks more than the glass seal (due to its higher coefficient of thermal expansion), leading to a compressive radial force onto the glass body. This leads to an increased hermeticity and tightness even under high temperature or gas pressure.
After sealing, the parts are cleaned. Standard plating for the flanges is nickel over copper plating.
Features / Specifications
Our penetrations operate up to
Forms of Supply and Product Packaging
We can deliver products in accordance to customers’ dimensional requirements. Upon request, we can also deliver sockets and o-rings.
Our products are delivered in dust-safe, moisture-safe, impact-proof transportation boxes.
Our penetrations are manufactured in our ISO 9001 certified plant. EEx e certified versions are possible upon request.
In addition to standard testing procedures, the pressure and gas tightness, as well as the electrical properties are stringently checked. For more information, please refer to our quality assurance process.