Filler device for handling hot corrosive materials
A bellows-type bag with its own heating element is developed for safe handling and injection of hot corrosive liquids into modules.
Source record↗
SEARCH · Search NASA
Results for “bellows”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Fastener provides cooling and compensates for thermal expansion
A fastener composed of a concentric bellows welded to two plates forming an annular cavity provides cooling and thermal expansion compensation in a high temperature environment.
Source record↗
Mouthpiece adapter for pipettes protects mouth from harmful liquids
To prevent the laboratory technicians mouth from contacting harmful liquids, a device with a hermetically sealed elastic bellows is attached to a standard pipette.
Mc Smith, D. G.↗
Spiraled channels improve heat transfer between fluids
Spiral flow channels increase heat transfer between two fluids in a countercurrent heat exchanger of given volume. The heat exchanger is constructed by connecting a spiraled bellows-shaped ducting between two concentric cylindrical tubes.
Higa, W.↗
Hydrogen-oxygen electrolytic regenerative fuel cells
Hydrogen-oxygen electrolytic regenerative fuel cell - electrode catalyst increase, improved bipolar plate design, fuel cell grade asbestos, and volume compensation bellows redesign
ELECTROLYTE↗
Hydrogen-oxygen electrolytic regenerative fuel cells
Hydrogen-oxygen electrolytic regenerative fuel cell development and tests - changes in gas volume ratio, bellows pressure equalizer, hydrogen electrodes, and asbestos matrices
ELECTRODE↗
Quick attach and release fluid coupling assembly is self-aligning, self-sealing
Fluid coupling assembly that is self-aligning, self-sealing and contains a bellow ball and socket coupling for quick attach and release is highly reliable and can handle cryogenic fluids where icing is encountered. The fluid coupling assembly is used in many fluid systems but is particularly applicable to cryogenic systems.
Herold, C. P.↗
Supersonic transport lubrication system investigation Third semiannual report, 1 Nov. 1965 - 1 May 1966
Ball bearing and bellows face seals for supersonic aircraft gas turbine engine mainshafts tested with selected lubricants using oil-mist and jet lubrication systems
OIL↗
Feasibility study of a fluidic control subsystem.
Fluidic control subsystem, describing components such as electric/fluid and position transducer, operational amplifier, fluid bellows and operation characteristics
FLUID AMPLIFIER↗
Vacuum chamber is remotely sealed by eutectic metal
Vacuum chamber is remotely sealed by a design using metal seal blades which are inserted into a molten eutectic metal by pressurizing an expansion bellows. The process increases allowable manipulations by improving working space and safety factors.
Cordova, R.↗
Method for X-ray study under extreme temperature and pressure conditions
Vacuum chamber environmental simulator and X ray camera are used to study the stability of various minerals in extreme environmental conditions. An ion pump creates the desired vacuum. Exact sample positioning is obtained with a bellows sealed linear motion feed-through. Temperature control is by means of fluid conductive heat transfer.
Paus, L. L.↗
Feed-thru conduit minimizes heat pickup
Insulated feed-thru conduit minimizes heat pickup by a cryogenic fluid passing through the walls of a double high-vacuum chamber, and is capable of expansion and contraction with the walls of the chamber. It uses a bellows and rigid cylinder to provide a low-loss feed-thru for the cryogenic liquid.
Yager, S. P.↗
Study of minimum pressure loss in high velocity duct systems Quarterly report
Bellows configurations design, pressure loss, and vibration tests to minimize pressure drop and improve gas and liquid flow in spacecraft high velocity duct systems
Gerlach, C. P.↗
Supersonic transport lubrication system investigation Semiannual report
Ball bearings and bellows face seals for supersonic transport lubrication systems
Hingley, C. G.↗
Supersonic transport lubrication system investigation, phase 2, first periodical report
Ball bearing and bellows face seals for Mach 3 aircraft turbine engine mainshafts tested using jet lubrication and inert gas blanketing
Rhoads, W. L.↗
Vibration damping of mechanical seals
Bellows seal filled with spherical powder reacts to vibration inputs by absorbing displacement energy through inertia and friction of the particle masses acting on the inside surface of the cylinders.
Hammond, R. R.↗
Investigation of positive shaft seals
Welded metal bellows secondary seals prevent secondary seal leakage with a minimum number of potential leak paths. High performance seal is obtained by controlling the potentially unstable seal-face movements induced by mechanical vibrations and fluid pressure pulsations.
Pfouts, J. O.↗
Concept for a gas operated actuator
Palladium valve, permeable to hydrogen gas, is used to fill a bellows mechanism from a source of hydrogen to power an actuator. A similar valve provides retraction. The valves have no moving parts and are heat operated. One limitation on the use of this actuator is discussed.
Ambruso, A.↗