Ribbon wound

Flame Arrestors and Explosion Reliefs. The flame trap is constructed of strips of corrugated and flat steel ribbon wound in a spiral. It breaks up a flame in the very small passages between the corrugations where the flame is quenched and extinguished. 

Screws for ordinary service customarily consist of steel ribbons wound helically around the central steel shaft or pipe, but for severe service and handling heavy loads the flights are made much heavier, usually of steel, but occasionally of cast iron. The screws are supported by a series of bearings spaced from 6 to 10 ft. centers and the troughs are closed at the charging end. The standard pitch is approximately equal to the diameter of the screw. 

Figure 8-2. Flat steel ribbon wound pressure vessel.

Figure 8-4. Schematic of winding process for the ribbon wound vessel.

A Chinese manufacturing firm developed a ribbon wound technique for multi-layered vessel construction in the 1960s and has subsequently produced over 7,000 ribbon wound vessels. Kobe Steel in Japan, was originally a multi-layer vessel manufacturer and produced approximately 1,000 units of the concentrically wrapped types. They currently do not produce multi-layer vessels any longer but still engage in solid wall, monobloc construction. 

Code Cases 2229 and 2269 were issued in 1996 and 1997 respectively to allow for ribbon wound pressure vessels. 

The fdlhiwing eqoatitms are for a ribbon-wound vresel liAere ... 

Crimped Metal Ribbon A flame arrester element that is manufactured of alternate layers of thin corrugated metal rihhon and a flat metal rihhon that are wound together on a mandrel to form a cylindrical assembly of many layers to produce a range of different sized triangular cells. The height and width of the triangular cells can he varied to provide the required quenching diameter. 

This is steel or aluminium sheet made in a continuous ribbon and wound tightly onto a bobbin to form a coil of metal. On a coil finishing line, the coil can be fitted at one end, and wound up pretreated, primed and finished on both sides at the other end. Sheets of painted metal can be cut from the coil and formed for use as the exterior cladding for, for example, industrial buildings and caravans. 

Electrochemical reactors (cells, tanks) are used for the practical realization of electrolysis or the electrochemical generation of electrical energy. In developing such reactors one must take into account the purpose of the reactor as well as the special features of the reactions employed in it. Most common is the classical reactor type with plane-parallel electrodes in which positive and negative electrodes alternate and all electrodes having the same polarity are connected in parallel. Reactors in which the electrodes are concentric cylinders and convection of the liquid electrolyte can be realized by rotation of one of the electrodes are less common. In batteries, occasionally the electrodes are in the form of two long ribbons with a separator in between which are wound up as a double spiral. 

Pulse-mode pyrolyzers include resistively-heated electrical filaments or ribbons and radio frequency induction-heated wires [841,842,846,848,849]. The filament or ribbon-type pyrolyzers are simple to construct. Figure 8.45, and typically consist of an inert wire or ribbon (Pt or Pt-Rh alloy) connected to a high-current power supply. Samples soluble in a volatile solvent are applied to the fileutent as a thin film. Insoluble materials are placed in a crucible or quartz tube, heated by a basket-lilce shaped or helical wound filiunent. The coated filament is contained within a low dead volume chamber through which the carrier gas flows, sweeping the pyrolysis products onto the column. The surface temperatui of the filament is raised rapidly from ambient temperature to He equilibrium pyrolysis temperature. This... 

In 1996, a 50 m underground superconducting cable (wound from 6 km of a BSCCO ribbon) and a 150 kW superconducting electric motor were successfully demonstrated. Further development of practical superconductor devices might well depend more on the development of suitable refrigeration technology than on the preparation of new superconducting materials. 

Some versions of the cell are manufactured in which the active materials are supported in tubular elements made from spirally wound perforated steel ribbon. Such a design is more common for alkaline nickel-iron cells, and will therefore be described for the latter system. 

Figure 5. Schematic of the spinner assembly/probe geometry used for VT-MAS. The rf coil (silver ribbon) is wound on either a Kel-F or Deirin (14) form.

He untied my hat and pushed it off, pulled out the pink ribbon, and wound his hand through my hair. Then he kissed my mouth. Emilie. Silence, Emilie. ... 

An in situ formed foam was originally designed by Dow Corning and found to be clinically superior to ribbon gauze for cavity wound packing. Its status in cytotoxic terms was in dispute but it is now available and its exclusion would be to the detriment of this entry. 

Sheet formulations may be applied to exuding lesions including leg ulcers, pressure areas, donor sites, and most other granulating wounds, but for deeper cavity wounds and sinuses the ribbon packing is generally preferred. The dressing is easy to remove without causing pain or trauma, and leaves minimal residue on the surface of the wound. " ... 

Figure 15. Schematic illustration of a chiral bilayer (A), with the molecules tilted with respect to the local layer normal. (The arrows indicate the direction of the molecular tilt, projected into the layer plane.) The favored twist between the chiral molecules leads the whole membrane to curve into (B), a wound ribbon, then fuse into (C), a cylindrical tube. The observed CD spectra come from the chiral molecular packing common to all three figures, not from the micrometer-scale helical structure in (B) and (C). Reproduced from ref. 171 (Schnur et al.. Science 1994,264,945) with permission of the American Association for the Advancement of Science.

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