Abstract:
The invention relates to a sealing composition for automobile tires. The composition comprises at least one polyhydric alcohol from a group comprising glycerol, ethylene glycol, propylene glycol, natural latex, water and possibly mineral fillers, as well as amphiphillic block copolymer being a polydispersion mixture of compounds of the general formula (I) and (II), in the amount of 1-5 % by weight, with compounds of type (I) being a polydispersion mixture with the content of individual homologues defined by Poisson distribution or other distribution similar to Poisson distribution, with average content of propylene oxide mer units per 1 mole of 2-ethyihexan-l-ol and variances falling within the range of 1-3 and the average content of ethylene oxide mer units per 1 mole of 2-ethylhexan-l-ol and variances following within the range of 8-13.
Abstract:
The invention relates to a tube freeze exchanger particularly for supplying a chill accumulator which facilitates extraction of freeze energy and storage of freeze energy in ice. The exchanger comprises an external tank (1) filled with slurry of ice and water, divided into horizontal sections by means of openwork dividers (11), a system aerating (12) the content of the tank (1) in the bottom zone, and at least one tubular portion (2) submerged in the tank, preferably with a developed internal surface provided with elements in its inside forcing the turbulent flow of the cooling fluid (8, 9, 10), and provided on the outside with longitudinal radiators in form of at least two longitudinal fins (4) placed opposite each other and provided with a metal element connected with an element made of insulation plastic (16), attached to a tubular portion (2) in longitudinal guides, formed on the contact line of at least two external covers put together (5), forming an external divisible shield of a tubular portion (2) with circle or polygon-shaped cross-section, preferably a diamond with a longer vertical diagonal, enclosed with a lock 15, and attached together with a tubular portion (2) on both sides in connecting blocks (6) that poorly conduct freeze energy, provided with pipe connectors, at least on one side of each tubular portion (2) enclosed with external covers there are perforated aeration conduits (7). If gas cooling medium is used with tubular portions (2) of the exchanger connected in parallel, in pipes connecting (17) tubular portions (2) of the exchanger from the side of the inlet and outlet of the cooling medium there are two chambers are mounted on each side (13): inlet and outlet in form of a tube with nozzles (14) in form of cone-shaped openings.
Abstract:
A gas recombination cap according to the invention is to be used to reduce gas emissions and water losses during the operation of a battery, and especially an acid lead battery. A gas recombination cap is characterized by a structure comprising a basket (1) with openings, a body (2), a condensation cylinder (9), and a top cap (14), wherein the condensation cylinder (9) has a catalytic core (5) with a catalyst (6) and an adsorbent (7), a drip cap (11 ), a two-way valve (12), an ignition safety device (13).
Abstract:
The invention refers to the method for the utilization of low-concentration mixtures of a combustible gas and air with the stable recovery of heat and the flow-reversal device for the embodiment of the method. The method consists in the combustion, with heat recovery, of the mixtures in the flow-reversal device having at least a single pair of combustion sections, each of which has the structural packing of monolith blocks with small channels characterized by low pressure drop, provided with an internal heating device, temperature and composition sensors and the elements of the automatic control system, supplied with the low-concentration mixture with the combustible component and connected with the heat recovery apparatus through the pipeline, wherein the quantity of energy transferred in the heat recovery apparatus (22) is stabilized by supplying additional fuel to the flow-reversal device, selecting the flow reversal moment, and selecting the flow rate for hot gas supplied by the pipeline to the heat recovery apparatus (22). Additional fuel in the form of highly concentrated fuel mixture is introduced as an admixture to the stream of low concentrated mixture containing the combustible component, supplied to the flow-reversal device or to the internal heating device (7). The device according to the invention, in its combustion sections (I, II) is provided with symmetrical temperature sensors (T i , T ii ) and an additional supply of highly concentrated combustible mixture (17) connected to the supply system for low-concentration mixture (15) with the combustible component or to the internal heating device (7). The combustion sections (I, II) are packed with heat-accumulating material (1, 2) of small porosity of the specific surface area below 30 m 2 /g, and advantageously below 1 m 2 /g.
Abstract:
The object of the invention is a photo-luminescent visual information sign to be placed in public spaces for the purpose of communicating visual information. The sign comprises the transparent plate (1), being a construction carrier of the sign, to the outer surface of which the photo-luminescent layer (2) is applied, constituting the content of the visual information sign - the graphic symbol, wherein the photo-luminescent layer (2) and outer surface of the transparent plate (1) are secured with a cover of removable protective foil (3). The inner surface of the transparent plate (1), which is not covered with the photo-luminescent layer, is covered with the coloured layer (4), being the background for the image, onto which the foam foil (5), adhesive on both sides, is applied, advantageously in white colour, covered with the anti-adhesive protective layer (6) and protecting the image on the side of the inner surface of the transparent plate (1).
Abstract:
The invention relates to a spacer with mixing elements, particularly for membrane modules. The spacer comprises a three-dimensional net with mesh (1) having the shape of polygons with number of sides n ≥ 5, with at least one pair of sides made of support beams (2) which are not in contact with one another, parallel to one another, preferably inclined from the axis defining the direction of the flow, each of which fits in the volume of a cylinder and is in contact with the surface of membranes (4), with at least one pair of vertices of the sides made of support beams (2) is connected with one another by means of two connectors (3) comprising mixing elements which are not in contact with the surface of both membranes (4) and forming between them an angle β
Abstract:
The invention is related to a gardening base, particularly for the cultivation of plants. The base comprises at least one self-supporting chamber (2) created in the ground or in a sheath (1), which is at least partly filled with a water-retaining material (3) and natural or artificial soil (5), however from the top the chamber (2) is at least partly shielded with a rigid water-resistant membrane (4) of a fixed position that is water-permeable and penetrable to plant roots.
Abstract:
A method of applying a protective cladding, particularly to gas-tight membranes of energy boilers involves coupling of two gas-tight membranes (2) together, and then soaking a pair of gas-tight membranes (2) coupled together at 300°C to 800°C, favorably at around 700°C; afterwards, the membrane (2) surface where a cladding (1) is to be applied is cleaned, a pair of gas-tight membranes (2) coupled together is mounted on a positioner and then preheated up to 80°C to 600°C, favorably to around 300°C-450°C, and then the cleaned and preheated surface of a pair of gas- tight membranes (2) coupled together is covered with a protective cladding (1), wherein a protective cladding is applied at a thickness of 0.1 mm to 3.00 mm, favorably around 0.6 mm, and then the entire pair of gas-tight membranes (2) coupled together with a cladding (2) is finally soaked at 300°C to 800°C, favorably at around 700°C, and the set temperature is maintained for 10 minutes to 600 minutes, favorably for 15 minutes to 30 minutes, and finally, gas-tight membranes (2) with a cladding are uncoupled.
Abstract:
The present invention refers to a polyester composition of reduced flammability being a mixture of an unsaturated free radical copolymerizable polyester and a cross-linking monomer, a flammability reducing modifier and auxiliary agents, wherein as a flammability reducing modifier it contains a halogen-free multi-component synergy-based mixture with a melamine salt in the form of melamine polyphosphate and/or melamine cyanurate and/or melamine borate and/or melamine oxalate in the quantity of 5.0-30.0 parts by weight per 100 parts by weight of an unsaturated polyester resin and a nanofiller in the form of precipitated synthetic silica and/or montmorillonite and/or expandable graphite in the quantity of 5.0-40.0 parts by weight per 100 parts by weight of unsaturated polyester resin.
Abstract:
The invention refers to the jumping pit, especially for high jump events, designed to ensure a safe landing for a jumper making jumps from larger heights. A jumping pit comprises a flat elastic structure and a shield put thereon, where the elastic structure is the inflatable mattress ( 1 ) provided on one side with evenly placed elastic inflatable ridges ( 2 ) attached with one side to the surface of the mattress ( 1 ). The ridges ( 2 ) are open from the side adjacent to the mattress ( 1 ) and attached to the mattress ( 1 ) along the edge of their bases so that the capacities of the ridges and capacity of the mattress ( 1 ) constitute the one whole. The mattress ( 1 ) with the ridges ( 2 ) is covered from the outside from the top and from the sides with the shield, the shape of which is aligned with the shape of the mattress ( 1 ) and its ridges and which is supported on the tops of the ridges ( 2 ).