Multilayer package for temperature control of complex geometric shapes

 

The invention relates to electrothermal, namely the temperature control of complex geometric shapes, and can be used in such industries as rocket science for heating the various elements of rocket design, as well as in everyday life, medicine, celosamente and other industries. Multilayer package for temperature control of complex geometric shapes contains outer and inner protective layers placed between stacked insulating strips and strips of conductive material with electrically insulating layers that are connected at the ends of the conductive vias, and conductive strip of material made in the form of woven filler, plain weave, consisting of four systems of threads, three of which are in the form of longitudinal strips of insulating threads, current distribution and current-carrying metallic tinsel threads and fourth intersecting therewith and perpendicular thereto located, integrated electrically conductive heat-generating polymer filaments, made of polycaproamide fibres, on the outer surface of which is in the form of a continuous coating Naya jumper made of foil on two sides of the copper or brass foil molded insulating composite material. The support ring may be made of several connected segments. The technical result that can be obtained from the use of the invention is to increase the reliability and efficiency of thermally products in various industries. 3 C.p. f-crystals, 1 tab., 11 Il.

Description text in facsimile form (see graphic part)

Claims

1. Multilayer package for temperature control of complex geometric shapes containing outer and inner protective layers placed between stacked insulating strips and strips of conductive material with electrically insulating layers that are connected at the ends of the conductive vias, wherein the strip of conductive material made in the form of woven filler, plain weave, consisting of four systems of threads, three of which are in the form of longitudinal strips of insulating threads, current distribution and current-carrying metallic tinsel threads and fourth, intersecting therewith and perpendicular thereto located electrically-conducting fuel Polimer the aqueous coating deposited conductive composition based on a copolymer of tetrafluoroethylene with vinylidenefluoride, filled furnace soot mass ratio of from 1:0.6 to 1:0.8 a at a total linear density of the filament 5258 Tex, the number of n electrically conductive heat-generating polymer filaments per unit length of woven filler, the amount To* current-carrying strips of metallic tinsel threads per unit width of the woven filler and the number of m1and m2metallic threads for even and odd number of conductive strips must match the value

where P is the rated power of the heating element, W;

e- maximum permissible dissipation per unit length of conductive thread, W/m;

A and b are respectively the length and width of the resistive layer, m;

U - specified supply voltage, V;

Rn- linear electrical resistance of the conductive filament, Ohm/m;

m- limit the dissipation per unit length metallic threads, W/m;

Rmspecific electrical resistance of metallized yarn, Ohm/m

2. Multilayer package under item 1, characterized in that the conductive jumper made of foil with two conductive strips of metallic tinsel strands with one hand woven filler alternately connected on each side of a conductive jumper and bonded to the foil by means of brass or copper tape, but on the other hand woven filler - striped ringed between a u-shaped pieces of metallic tinsel strands or strips of copper foil.

3. Multilayer package under item 1 or 2, characterized in that it replicates the geometry of a controlled product and is made of separate sections, the outer protective layers are of waterproof and dustproof nylon fabric in the peripheral zones equipped with textile clasp fastened together along the lines of mates in the nodes of the junction of the insulating gasket and additionally fixed by mechanical fixing devices, while the upper part of the multilayer stack consisting of a conical part and a cap mounted on the head part and the lower part consisting of separate cylindrical sections, provided on the final perimeter of the apron with a through hole, bonded to the support ring.

4. Multilayer package according to p. 3, characterized in that the support ring is made of several connected segments, consisting of outer and inner vertical and Central horizontal surfaces, made in one piece, and the inner surface replicates the geometry of the final part of the design of the outer vertical surface repeats the final perimeter of the cylindrical part of the multilayer stack and provided with screw holes for fastening separate sections, and the horizontal surface includes mounting holes for attaching the system to monitor and control the temperature of individual sections of the multi-layer package, connected in parallel to a single power source.

 

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