RU216253U1 - Multilayer Composite Thermal Insulation Panel - Google Patents

Abstract

The utility model relates to the field of land construction, as well as to ships and other floating facilities, to equipment for them, and is used to create thermal insulation of objects, including transportation tanks and storage facilities. The utility model is aimed at creating a multilayer composite heat-insulating panel with moisture resistance, wear resistance, and resistance to mechanical stress. The multilayer composite heat-insulating panel has the form of a solid element containing an octahedron and a tetrahedron located on it with the formation of a step between them, while the heat-insulating panel includes one middle layer of polyurethane foam, as well as the upper and lower glass-composite layers, consisting of glass mat and polyurethane foam, fastened together during the manufacturing process by thermostating under pressure. 2 w.p. f-ly, 2 ill.

Description

The utility model relates to the field of land construction, as well as to ships and other floating facilities, to equipment for them, and is used to create thermal insulation of objects, including transportation tanks and storage facilities. The utility model can be applied both as external thermal insulation and internal, with integration into a membrane-type containment system.

An isothermal honeycomb composite wall panel is known from the prior art (patent RU 210932 U1, IPC E04C 2/24), consisting of two layers: the first is a honeycomb composite layer created from two thin and durable facing plates of glass mat using paper honeycomb filler as a core, and the second is a polyurethane foam layer made from a polyurethane foam sheet lined with a glass mat plate on one side.

The advantage of the solution according to patent RU 210932 U1 is the use of two glass-composite cladding plates in the wall panel structure, formed on both sides of the honeycomb-composite layer by creating a thin and durable cladding layer, the surface of which is created from glass mat by spraying a special polyurethane foam composition with further temperature control of the created surface under pressure. The formed glass-composite layers provide the wall panel with additional rigidity, strength and wear resistance.

The disadvantage of the solution according to patent RU 210932 U1 is the use of paper honeycomb filler as the core, which during transportation, installation and operation can be deformed and or destroyed as a result of mechanical action and (or) moisture. Another disadvantage of this solution is the adhesive bonding of the paper and polyurethane foam layers, which can also lead to delamination of the panel under conditions of moisture, temperature changes, and mechanical loads. The above drawbacks make unreliable the use of this solution in conditions of high humidity, temperature extremes, cyclic and dynamic loads.

Known heat-insulating panel for storage systems of cryogenic products (patent RU 215319 U1, IPC: B63B 25/16), containing one layer reinforced in the body of polyurethane foam and two layers, top and bottom, plywood, glued two-component polyurethane adhesive under pressure, while the panel made of octahedral and symmetrical shape, with interlocks, at the ends formed at the panel of longitudinal steps to organize the fixation and sealing of the connection formed by the plane of thermal insulation.

The advantage of the solution according to patent RU 215319 U1 is the offer of unified units of heat-insulating panels, which provide simplicity and convenience in the formation and installation of a heat-insulating coating (layer). Another advantage of the solution according to patent RU 215319 is the possibility of using thermal insulation as a coating that directly perceives mechanical load due to the execution of the upper and lower layers of plywood, which provides the structure with bending rigidity, strength and wear resistance.

Meanwhile, this solution has the disadvantages inherent in plywood, which has a high moisture absorption coefficient and can change its physical and mechanical properties when exposed to moisture and different temperatures.

The utility model, combining the advantages of solutions according to patents RU 210932 U1, RU 215319 U1, is aimed at eliminating their shortcomings, namely, at creating a multilayer composite heat-insulating panel with moisture resistance, wear resistance, and resistance to mechanical stress.

The problem is solved due to the fact that the proposed multilayer composite heat-insulating panel is made in the form of a solid element containing an octahedron and a tetrahedron located on it with the formation of a step between them. At the same time, the heat-insulating panel has one middle layer of polyurethane foam, as well as upper and lower glass-composite layers, consisting of glass mat and polyurethane foam, fastened together during the manufacturing process by temperature control under pressure. The multi-layer composite thermal insulation panel is formed together with the material in one technological process.

Thus, due to this solution, it is ensured:

high adhesion of dissimilar materials (layers) and their reliable bonding to each other;

the execution of the outer layers of glass composite provides high bending rigidity of the material, moisture resistance, strength and wear resistance;

ease of assembly and installation of a heat-insulating coating (layer) from heat-insulating panels, which are unified assembly units with original connection of panels according to the puzzle principle.

Brief description of explanatory drawings

The claimed utility model is illustrated by drawings (figure 1, 2), with the following symbols:

Multilayer composite thermal insulation panel - 1;

Step - 2;

Octahedron - 3;

Tetrahedron - 4;

Middle layer - 5;

Glass composite layers - 6;

Mounting holes - 7.

In FIG. 1 shows a multi-layer composite thermal insulation panel, top and sectional views;

In FIG. 2 shows the principle of connecting thermal insulation panels and forming a thermal insulation coating.

Disclosure of the essence of the utility model

The multilayer composite heat-insulating panel - 1 is a solid element, including a step - 2, formed along the ends of the element, with the formation of an octahedron - 3 and a tetrahedron - 4 lying on it. the lower glass-composite layers - 6, consisting of glass mat and polyurethane foam, fastened together in the manufacturing process by thermostating under pressure. The multi-layer composite thermal insulation panel is formed together with the material in one technological process.

The multilayer composite heat-insulating panel additionally includes mounting holes - 7 (figure 2) for fastening the panels and the coating organized from them to the supporting structure, which in a particular case are located in the plane of the step - 2.

The heat-insulating panel in a particular case of the invention is manufactured together with the material, as follows:

cut out from a sheet of polyurethane foam of a given density and thermal conductivity of the workpiece of the above form;

a package is formed from a blank and two sheets of glass mat, the package is fixed in a frame or in a special matrix;

a facing surface is formed, for which a special thermosetting composition based on polyol and isocyanate is alternately sprayed on each of the sides covered with glass mat;

the billet is thermostated under pressure, for which, after spraying, the resulting billet is placed in a preheated press. Then, under controlled pressure and temperature, using a special height limiter, the layers of the workpiece adhere, as well as the foaming of the thermosetting composition applied to the glass mat and the formation of facing surfaces.

Mounting holes are drilled in the manufactured heat-insulating panel.

The choice of density of glass mat, polyurethane foam and other parameters depend on the requirements for the physical and mechanical properties of the finished product.

To achieve a stable result, spraying is recommended to be carried out by automated or robotic methods. Spraying is carried out in one layer, and the number of passes is determined by the size of the sheet or workpiece at a fixed ratio of components and a predetermined productivity of the spraying unit. In a particular case of the implementation of the utility model, the spraying is carried out by a robotic complex. In this case, the controlled parameters during spraying are the following:

t° of components in tanks,

spray head t°,

t° RVD,

performance,

pump pressure,

the speed of movement of the spray head during spraying.

In a particular case of the implementation of the utility model, the multilayer composite heat-insulating panel consists of at least one layer of polyurethane foam with a density of 50-130 kg/m ³ with cryogenic thermal conductivity characteristics (ρ=50 kg/m ³ , λ=0.015 at t - 170°C ) reinforced in the body with a special glass material in a mass fraction of 7-10% and two facing glass-composite layers, upper and lower, consisting of glass mat and polyurethane foam formed in the manufacturing process by temperature control under pressure of a special composition based on polyol and isocine sprayed onto the glass mat.

The multilayer composite heat-insulating panel, due to the shape features, allows to form a stepless heat-insulating coating. The principle of forming a coating from heat-insulating panels in accordance with the utility model is shown in Fig. 2.

The multilayer composite heat-insulating panel due to the physical and mechanical properties of the layers bonded during the manufacturing process by temperature control under pressure allows the panel to be used to create both external and internal thermal isothermal circuits.

Claims (3)

1. A multilayer composite heat-insulating panel made in the form of a solid element, including a step formed along the ends of the element, with the formation of an octahedron and a tetrahedron lying on it, characterized in that the heat-insulating panel has one middle layer of polyurethane foam, as well as upper and lower glass-composite layers , consisting of glass mat and polyurethane foam, fastened together in the manufacturing process by thermostating under pressure. 2. Multilayer composite thermal insulation panel according to claim 1, characterized in that it additionally includes mounting holes. 3. Multilayer composite heat-insulating panel according to claim 2, characterized in that the mounting holes are located in the plane of the step.

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