Earth-Laid Transport Pipes for -162°C to +400°C
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Abstract
Since many years, steel-in-steel pipelines (SIS) have proven to be safe for the conveyance of media at high temperatures of up to 400 °C and/or in difficult soils. SIS pipelines typically consist of a medium pipe made of steel, thermal insulating shells, bearings in the ring space and an encasing steel pipe with a corrosion protection coating as well as vacuum in the ring space.
The operation of FW-STEEL-CASED PIPE-IN-PIPE with vacuum in the ring space offers many advantages:
For high or deep temperatures FW STEEL-CASED PIPE-IN-PIPE and FW-KAMMER-PIPE offer the advantage to apply proven technology to cutting-edge tasks. In this way, the application of state-of-the-art technology for the compensation of thermal expansion, such as the compensation in the bends of the route or the use of angular compensators, is possible. By this, the FW-KAMMER-PIPE holds up the tradition of “TWO-IN-ONE“.
The operation of FW-STEEL-CASED PIPE-IN-PIPE with vacuum in the ring space offers many advantages:
- The system is permanently controlled as to its leak tightness
- Heat losses are reduced by up to 40%
- By the extraction of oxygen and humidity the possibility of corrosion of the medium pipe (outside), the encasingpipe (inside) as well as all fittings (e. g. bearings) is eliminated.
- In case of high operating temperatures of 130 °C to 400 °C
- In difficult soils (with high water content, in case of settling risks, flood areas)
- For the crossing of canals, rivers, railway constructions, roads
- For the conveyance of environmentally hazardous media.
- The chamber pipe is supported by bearings within the encasing pipe
- The medium pipe is supported by bearings within the chamber pipe.
For high or deep temperatures FW STEEL-CASED PIPE-IN-PIPE and FW-KAMMER-PIPE offer the advantage to apply proven technology to cutting-edge tasks. In this way, the application of state-of-the-art technology for the compensation of thermal expansion, such as the compensation in the bends of the route or the use of angular compensators, is possible. By this, the FW-KAMMER-PIPE holds up the tradition of “TWO-IN-ONE“.
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