Composite heat preservation structure for low-temperature places

Abstract

The utility model discloses a low temperature place composite thermal insulation structure which comprises a protective layer, a thermal insulation layer, a vapor barrier layer, a first plastering layer, a base layer and a second plastering layer, the first plastering layer is arranged on the first side face, facing the normal temperature side, of the base layer, and the second plastering layer is arranged on the second side face, facing the low temperature side, of the base layer; the vapor barrier layer is laid on the second plastering layer, the heat preservation layer is arranged on the vapor barrier layer, and the protection layer is arranged on the heat preservation layer. The composite heat preservation structure for the low-temperature place is stable and reliable in heat preservation performance and fire-fighting fire resistance rating, good in fire-fighting fire resistance rating and thermal performance, and capable of effectively solving the problem that the thermal performance and the fire-fighting performance of a conventional single heat preservation material cannot meet the requirement for the good performance.

Description

Technical Field

[0001] The utility model relates to a heat insulation technology, in particular to a heat insulation technology for low temperature places. Background Art

[0002] In low-temperature places such as indoor ski venues, cold chain system warehouses and other buildings, single insulation materials such as rock wool, PIR, and foamed polyurethane are mainly used to meet thermal requirements. According to the requirements of the heat transfer coefficient, there will be a variety of insulation material thicknesses to choose from.

[0003] Single insulation material has a simple structure and is relatively easy to calculate thermal engineering. There are many existing similar buildings that use single insulation material. For example, the exterior wall of Qiaobo Indoor Ski Resort in Shaoxing, China uses rock wool insulation material, and the Dubai Indoor Ski Resort uses PIR.

[0004] However, there are some unavoidable problems in the use of single insulation materials, such as:

[0005] Rock wool insulation materials have strong hygroscopicity and often have high humidity on the low temperature side. After long-term use, the thermal performance of rock wool materials will decrease after absorbing moisture. At the same time, due to the increase in self-weight after moisture absorption, it is easy to fall off.

[0006] PIR materials have good thermal insulation and moisture absorption properties, but the material itself belongs to the B1 fire resistance grade and cannot be used on a large scale in some areas. It still needs to be combined with other insulation materials.

[0007] Foamed polyurethane materials need to be foamed on site, which is inconvenient to construct and still faces the problem of fire resistance rating in fire protection.

[0008] It can be seen that how to effectively improve the reliability of protective structures for low-temperature fields is an urgent problem to be solved in this field. Utility Model Content

[0009] In view of the problems existing in the use of a single thermal insulation material in existing low-temperature places, the purpose of the present utility model is to provide a composite thermal insulation structure for low-temperature places, which can effectively overcome the problem of poor reliability of a single thermal insulation material.

[0010] In order to achieve the above-mentioned purpose, the present invention provides a composite thermal insulation structure for low temperature places, comprising a protective layer, a thermal insulation layer, a vapor barrier layer, a first finishing layer, a base layer and a second finishing layer.

[0011] A first finishing layer is provided on a first side surface of the base layer facing the normal temperature side, and a second finishing layer is provided on a second side surface of the base layer facing the low temperature side;

[0012] The vapor barrier layer is laid on the second finishing layer, the thermal insulation layer is arranged on the vapor barrier layer, and the protective layer is arranged on the thermal insulation layer.

[0013] In some embodiments of the present invention, the first plastering layer or the second plastering layer is a polymer anti-cracking mortar plastering layer.

[0014] In some embodiments of the present invention, the protective layer is composed of a rock wool sandwich panel.

[0015] In some embodiments of the present invention, the thermal insulation layer is composed of a polyurethane foam layer.

[0016] In some embodiments of the present invention, the vapor barrier layer is composed of a polyurethane cyanogen layer.

[0017] In some embodiments of the present invention, the composite thermal insulation structure further includes a keel, and the keel is fixed on the base layer to form a base for fixing the protective layer.

[0018] In some embodiments of the present invention, the keel is fixed by a polyurethane insulation pad.

[0019] In some embodiments of the present invention, the composite thermal insulation structure further includes a finishing layer, and the finishing layer is arranged on the first finishing layer.

[0020] The composite thermal insulation structure for low-temperature places provided by the utility model has stable reliability in thermal insulation performance and fire resistance grade, and is uniform in fire resistance grade and thermal performance, which can effectively overcome the problem that conventional single thermal insulation materials cannot meet the uniformity in thermal performance and fire performance.

[0021] The composite thermal insulation structure for low-temperature places provided by the utility model can effectively control the overall thickness of the thermal insulation structure through multi-layer composite.

[0022] Compared with the traditional single-material insulation structure, the composite insulation structure provided by the utility model for low-temperature places can more easily bring out the unique properties of different materials when used, can meet the various requirements of more usage situations, and effectively improve the overall efficiency of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is an example diagram of the composition of the composite thermal insulation structure for medium and low temperature places of the utility model.

[0025] Figure 2 This is an example diagram of the assembly structure between the rock wool sandwich panel and the keel in the utility model;

[0026] Figure 3 This is a cross-sectional view of the assembly structure between the rock wool sandwich panel and the keel in the utility model. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0028] Compared with the traditional solution that adopts a single material insulation structure for low-temperature places, the utility model provides a composite insulation structure for low-temperature places, so that its overall insulation system not only meets fire protection requirements but also achieves high thermal performance.

[0029] See also Figure 1 , which shows an example of the composition of the composite thermal insulation structure for low temperature places provided by the present invention.

[0030] As can be seen from the figure, the composite thermal insulation structure 100 for low temperature places provided by the present invention is mainly composed of a protective layer 110, a thermal insulation layer 120, a vapor barrier layer 130, a first finishing layer 140, a base layer 150 and a second finishing layer 160 that cooperate with each other.

[0031] The base layer 150 , serving as the foundation of the entire composite thermal insulation structure, is specifically composed of a concrete block wall.

[0032] A first finishing layer 140 is provided on a first side surface of the base layer 150 facing the normal temperature side, and a second finishing layer 160 is provided on a second side surface of the base layer 150 facing the low temperature side.

[0033] Therefore, two vapor barrier layers 130 are further laid on the second finishing layer 160, thereby improving the air tightness and water tightness of the entire composite thermal insulation structure, preventing the corresponding water vapor from penetrating into the thermal insulation layer and affecting the thermal insulation effect of the entire composite thermal insulation structure.

[0034] Furthermore, the thermal insulation layer 120 is further covered on the vapor barrier layer 130. The thermal insulation layer 120 serves as the thermal performance layer of the entire composite thermal insulation structure. It is arranged on the vapor barrier layer 130 and cooperates with the vapor barrier layer 130 to effectively ensure the thermal insulation effect.

[0035] On this basis, a protective layer 110 is provided on the thermal insulation layer 120 , and the protective layer 110 is specifically configured to provide fire protection and thermal insulation for the thermal insulation layer 120 , thereby making the entire composite thermal insulation structure have good fire protection and thermal insulation performance.

[0036] As a further explanation, in the specific implementation, the first finishing layer 140 or the second finishing layer 160 in the composite thermal insulation structure is preferably formed by a polymer anti-cracking mortar finishing layer, which effectively prevents cracking of the composite thermal insulation structure and ensures flatness.

[0037] As a further explanation, the vapor barrier layer 130 in the composite thermal insulation structure is preferably formed of a polyurethane cyanogen gel layer, which can ensure the air tightness and water tightness of the vapor barrier layer 130.

[0038] As a further explanation, the thermal insulation layer 120 in the present composite thermal insulation structure is preferably composed of a polyurethane foam layer, thereby improving the thermal insulation performance of the formed composite thermal insulation structure.

[0039] As a further explanation, the protective layer 110 in the composite thermal insulation structure is composed of a rock wool sandwich panel, thereby enabling the entire composite thermal insulation structure to have excellent fire prevention and thermal insulation properties.

[0040] The composite thermal insulation structure for low-temperature places formed in this way has excellent performance in both fire protection and thermal engineering, and can meet fire protection requirements while achieving high thermal engineering performance.

[0041] The composite thermal insulation structure solution for low-temperature places provided by the present invention is further illustrated below through specific application examples.

[0042] In this example, rock wool sandwich panels, foamed polyurethane and concrete block walls are used to form a composite structure to form a composite insulation structure for low-temperature places.

[0043] Further integration Figure 1 As shown, in this example, when constructing a composite insulation structure for a low-temperature location, a 100-300 mm thick concrete block wall is first set as the base layer 110 facing the normal temperature side (warm area) 200, where the thickness of the concrete block wall is preferably 200 mm.

[0044] Specifically, in this example, when setting up the concrete block wall, autoclaved aerated concrete block wall is used, and the base wall is prevented from hollowing and cracking, and is laid with mortar.

[0045] As required, the formed concrete block wall 110 is further provided with a structural beam 170 to strengthen the integrity of the wall.

[0046] On this basis, in this example, crack-resistant mortar is applied on both sides of the concrete block wall 110 to form the corresponding first finishing layer 140 and second finishing layer 160, and a full-length steel plate mesh is pressed in for reinforcement to ensure the firmness of the wall.

[0047] Specifically, in this example, when the concrete block wall 110 is facing the normal temperature side (warm zone) 200 with anti-cracking mortar, a 3-8 mm thick water-resistant putty layer is first laid, preferably 5 mm thick, and then polymer anti-cracking mortar is further applied and pressed into the full-length steel plate mesh, wherein the thickness of the polymer anti-cracking mortar is preferably 6-13 mm.

[0048] In this example, when the concrete block wall 110 is plastered with anti-cracking mortar facing the low-temperature side 300, a 6-12 mm thick DP M20 polymer anti-cracking mortar topcoat is formed and calendered, and a 6-12 mm thick polymer anti-cracking mortar is pressed into the full-length steel mesh.

[0049] Furthermore, in this embodiment, a vapor barrier material is applied to the mortar surface close to the low-temperature side, thereby forming a vapor barrier layer 130 .

[0050] Specifically, in this embodiment, when forming the vapor barrier layer 130, polyurethane cyanide is applied twice to form a vapor barrier layer with a thickness of 0.4-0.8 mm.

[0051] In this example, polyurethane insulation pads 191 are used to secure H-shaped keels 190 to the side of the structure coated with the vapor barrier material, ensuring that the keels do not create a "cold bridge" effect within the overall insulation system. H-shaped keels 190 serve as a base for securing the rock wool sandwich panels 110 on the low-temperature side. Polyurethane insulation pads 191 are preferably 40-60 mm thick.

[0052] See also Figure 2 and 3 In this example, when the H-shaped keel 190 is fixed, the corresponding expansion bolt assembly 192 passes through one end of the H-shaped keel 190 and the polyurethane insulation pad 191, and the H-shaped keel 190 and the polyurethane insulation pad 191 are directly fixed to the structural beam 170 in the concrete block wall 110.

[0053] The expansion bolt assembly 192 here is mainly composed of expansion bolts and high-strength gaskets.

[0054] Furthermore, in this example, a rock wool sandwich panel is fixed on the low-temperature side 300 to form a protective layer 110. Specifically, the rock wool sandwich panel 100 is fixed to the other end of the H-shaped keel 190 using corresponding self-tapping screws 111, thereby forming the corresponding protective layer 110. In this example, a 40-60 mm thick double-sided color-coated steel rock wool sandwich panel is used, and a weather-resistant sealant 112 is applied to the joints.

[0055] As needed, a panel seam decorative strip 113 may be provided at the panel seams on the double-sided color steel rock wool sandwich panel 110 .

[0056] On this basis, this example creates a cavity between the rock wool sandwich panel 110 and the concrete block wall 150. A 120-180mm thick polyurethane foam is then applied on-site to form the insulation layer 120, completing the overall insulation structure. In this example, self-extinguishing rigid polyurethane foam (grade B1) is used.

[0057] In the composite insulation structure for low-temperature places formed in this way, the combination of rock wool sandwich panels, foamed polyurethane and concrete block walls brings the properties of various materials to the extreme state, achieving a balance in thermal engineering and fire protection.

[0058] Among them, the rock wool sandwich panel used on the low-temperature side meets the fire resistance requirements of the insulation system by controlling the overall thickness, while avoiding the shortcomings of low thermal performance efficiency and easy moisture absorption caused by overly thick rock wool materials; the foamed polyurethane layer used in the middle part, because it is protected by materials with A-level fire resistance limit on both sides, avoids the disadvantages of limited use of B1-level materials itself, and can give full play to its own thermal performance efficiency.

[0059] As a further configuration, in this embodiment, a finishing layer 180 may be provided on the side of the concrete block wall 110 facing the normal temperature side (warm zone) 200 .

[0060] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Composite thermal insulation structure for low temperature places, characterized by: It includes protective layer, thermal insulation layer, vapor barrier layer, first finishing layer, base layer and second finishing layer. A first finishing layer is provided on a first side surface of the base layer facing the normal temperature side, and a second finishing layer is provided on a second side surface of the base layer facing the low temperature side; The vapor barrier layer is laid on the second finishing layer, the thermal insulation layer is arranged on the vapor barrier layer, and the protective layer is arranged on the thermal insulation layer.

2. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The first plastering layer or the second plastering layer is a polymer anti-cracking mortar plastering layer.

3. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The protective layer is composed of a rock wool sandwich panel.

4. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The heat-insulating layer is composed of a polyurethane foam layer.

5. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The vapor barrier layer is composed of a polyurethane cyanide layer.

6. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The composite thermal insulation structure further comprises a keel, which is fixed on the base layer to form a base for fixing the protective layer.

7. The composite thermal insulation structure for low temperature places according to claim 6, characterized in that: The keel is fixed by a polyurethane heat-insulating pad.

8. The composite thermal insulation structure for low temperature places according to claim 1, characterized in that: The composite thermal insulation structure further comprises a finishing layer, which is arranged on the first finishing layer.

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