Pressure-tight closure for thermoelements
The thermoelements were arranged in a pressure-tight housing for measuring temperatures on the inside of high-pressure hydrogenation equipment. Should the housing ever leak due to failure of the material or the grinding action of the high sand content of the coal paste, the stall was liable to be set on fire. If, in an installation protected in this manner, an element housing should leak, the pressure tight closure at one end of the housing prevented an escape of the gas and product and the stall could continue to run without danger. The final form of this closure was discussed in detail in this report. In the development of this closure, particular value was attached to a compact construction. In the sealing for a 30-mm high pressure tube, four steel and four constantan wires were insulated and arranged pressure-tight. Each of the three fillers had a different purpose. The hard-rubber insert took the surface pressure, the rubber stopper provided a seal and the cast gypsum provided protection against heat should hot gas or product reach the closure in case of a leaky housing. Two drawings were given showing the thermoelement-closure, and the final form of the closure. The report discussed methods of evacuating from the thermohousings any accumulations of condensed water, which could damage insulation, or hydrogen, which continually diffused in small amounts during operation and which could attack the iron elements of the thermocouples. The pressure-tight closures for thermoelements had been successful at preventing fires due to leakage for more than nine months of operation. 2 sketches.
- Research Organization:
- I.G. Farbenindustrie, A.G., Merseburg (Germany)
- OSTI ID:
- 6818662
- Report Number(s):
- TOM-237-775-778
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
HYDROGENATION
COAL LIQUEFACTION PLANTS
ON-LINE MEASUREMENT SYSTEMS
HYDROGEN
CORROSIVE EFFECTS
THERMOMETERS
DESIGN
WATER
COAL PASTES
CONTAINERS
DIAGRAMS
ELECTRIC CABLES
FIRE HAZARDS
GASES
GYPSUM
HIGH PRESSURE
HIGH TEMPERATURE
HYDRIDATION
LEAKS
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
PRECIPITATION
PRESSURE GAGES
PRESSURE VESSELS
PUMPS
RUBBERS
RUPTURES
SAFETY
TEMPERATURE MEASUREMENT
THERMAL INSULATION
VALVES
VAPOR CONDENSATION
WIRES
ALKALINE EARTH METAL COMPOUNDS
CABLES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CONDUCTOR DEVICES
CONTROL EQUIPMENT
CRYOGENIC FLUIDS
ELASTOMERS
ELECTRICAL EQUIPMENT
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FAILURES
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUELS
HAZARDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
MINERALS
NONMETALS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction