Cavity-free foaming interlayer outer wall composite external thermal insulation structure of civil refrigeration house

Abstract

A keel purline (5) serves as a supporting structure to be connected with a polyurethane spraying heat preservation layer (7) and a polyurethane pouring heat preservation layer (10) in a penetrating and pulling mode to form the composite heat preservation structure, and the outer side of the keel purline (5) is connected with an exterior facing protection layer (9). The stability of the whole structure is improved; the external wall composite external thermal insulation can effectively reduce heat transfer and improve the thermal insulation effect of the refrigeration house. The influence of external temperature change on the structure of the refrigeration house is reduced, temperature fluctuation is reduced, and the quality and storage life of goods are protected. And through reasonable material selection and construction control, the heat preservation effect and the service life of the refrigeration house can be ensured, and a stable and reliable low-temperature environment is provided for goods storage. The spraying polyurethane-pouring polyurethane composite heat preservation layer enables heat preservation materials to be filled easily, and normal foaming of polyurethane is facilitated. Therefore, the heat preservation effect is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of walls of buildings classified under IPC E04B2 / 00, and in particular relates to an innovative and improved technology for the thermal insulation structure of the exterior wall of a civil cold storage. Background Art

[0002] At present, cold storage is the basic building facility for the development of the cold chain industry. Its main function is to store food at low temperature, combined with food processing, pre-cooling, refrigerated transportation and other functions. Cold storage needs to maintain a low temperature environment. The widely used internal insulation system in civil cold storage is mostly sprayed rigid foam polyurethane combined with color steel plate system and extruded polystyrene board and thin plastering system. The insulation structure of civil cold storage is the key part to ensure the stability of the internal temperature of the cold storage and reduce energy loss. In the existing civil cold storage projects, the outer wall of the cold storage is usually built with sintered bricks or solid cement bricks, and then an insulation layer is set on the inner side of the wall to achieve composite insulation.

[0003] The insulation layer structure of civil cold storage usually includes the following parts:

[0004] 1) Wall insulation layer: The wall is one of the key parts of cold storage insulation. Generally, polystyrene foam board or polyurethane spray foaming is used for insulation. The insulation layer should be close to the wall surface and ensure no gaps or hollows to improve the insulation effect.

[0005] 2) Roof insulation layer: The roof is also an important part of cold storage insulation. The construction method of the roof insulation layer is similar to that of the wall insulation layer. It is also necessary to use appropriate insulation materials and ensure the integrity and sealing of the insulation layer.

[0006] 3) Ground insulation layer: The ground insulation layer is mainly used to prevent the cold from being transferred downward and reduce the frost and ice on the ground. -·, and a moisture-proof layer and a protective layer are laid on top of the insulation material.

[0007] There are two types of insulation materials for cold storage: one is processed into fixed-shape and standard plates with fixed length, width and thickness. The corresponding standard plates can be selected according to the needs of the cold storage equipment. High and medium temperature cold storage generally use 10cm thick plates, low temperature cold storage and frozen cold storage generally use 12cm or 15cm thick plates. Another type is to use polyurethane spray foam to spray the material directly into the previously built brick or concrete warehouse. After shaping, it is both moisture-proof and heat-insulating.

[0008] The utility model studies the improvement of the cold storage wall insulation layer structure technology. There are few related patent applications that have been published.

[0009] Patent application 202322587161.2 provides a wall structure and a cold storage. The above-mentioned wall structure includes an insulation layer and a masonry exterior wall; the insulation layer is arranged on the inner side of the masonry exterior wall, and the masonry exterior wall includes a plurality of prefabricated assembly panels, which are arranged in an array on the vertical plane, and a joint is provided between the opposite end faces of two adjacent prefabricated assembly panels in the vertical direction, and a mortise and tenon joint is formed between the opposite end faces; anti-cracking mortar is provided in the joint; a plurality of first reinforcing mesh cloths are provided on the inner side of the masonry exterior wall, and a plurality of second reinforcing mesh cloths are provided on the outer side of the masonry exterior wall; the plurality of first reinforcing mesh cloths and the plurality of second reinforcing mesh cloths are arranged one by one, and each joint is limited between the first reinforcing mesh cloth and the second reinforcing mesh cloth arranged oppositely, and the anti-cracking mortar in the joint is diffused into the first reinforcing mesh cloth and the second reinforcing mesh cloth respectively.

[0010] Patent application 202022347682.7 discloses a civil cold storage insulation structure, including a water seepage layer, an outer wall panel, an insulation layer, an inner wall panel and a wedge, one end of the wedge is fixedly embedded in the soil layer, and the outer wall of one end of the wedge is fixedly connected to a plurality of plywood, each of which is hinged with a diagonal rod, and the other end of the wedge is provided with a restraining mouth portion, and the outer side of the restraining mouth portion is sleeved with an outer wall panel and a threaded sleeve, and the outer wall panel is provided with a plurality of outer wall holes corresponding to the restraining mouth portion, and a threaded hole is also provided on one end face of the restraining mouth portion, which can effectively fix the inner and outer wall panels to the wedge, thereby forming a filling space for polyurethane foam material between the inner and outer wall panels.

[0011] Patent application 201920004075.5 discloses a thermal insulation and fireproof decoration system for the outer enclosure structure of a civil cold storage, including a vapor barrier layer, an extruded polystyrene board layer, a rigid foam polyurethane layer, a wire mesh, a fireproof mortar layer, and a color steel tile decorative layer which are sequentially arranged on the base wall.

[0012] At present, civil cold storage almost all adopts the external wall internal insulation system, but it cannot fundamentally solve the existence of cold bridges in the structure itself. In the later operation of the cold storage, it is easy to have cold running, frost and ice, etc., and the operation energy consumption is high, which affects the normal operation of the cold storage. Moreover, due to the use of internal insulation, the overall internal space and storage capacity of the cold storage are too much. Some even have complicated and cumbersome construction processes, spray polyurethane filling foaming is not ideal, which is not conducive to controlling the insulation effect, and the foaming material is easily squeezed and deformed, which seriously affects the overall structural stability of the cold storage, and there are serious safety hazards. In addition, a waterproof structure must be added to the periphery of the cold storage, which is very easy to cause water seepage in the cold storage, and also seriously restricts the insulation performance of the cold storage. Utility Model Content

[0013] The technical problem to be solved by the utility model is that in view of the above-mentioned existing problems and technical requirements, the utility model proposes a composite external insulation structure of a civil cold storage with a non-cavity foamed sandwich exterior wall, which can effectively reduce the conduction of external heat to the interior of the cold storage, thereby reducing the energy consumption of the refrigeration system. Through reasonable material selection and construction control, the insulation effect and service life of the cold storage can be ensured, providing a stable and reliable low-temperature environment for the storage of goods.

[0014] To this end, the utility model includes: a keel purlin, a sprayed polyurethane insulation layer, an exterior surface protective layer and an infused polyurethane insulation layer. The keel purlin, as a supporting structure, penetrates and pulls the sprayed polyurethane insulation layer and the infused polyurethane insulation layer to form a composite insulation structure, and the keel purlin is connected to the exterior surface protective layer on the outside. The keel purlin is vertically extended and embedded in the paving direction of the composite insulation structure formed by the sprayed polyurethane insulation layer and the infused polyurethane insulation layer; the keel purlin crosses the joint surface of the sprayed polyurethane insulation layer and the infused polyurethane insulation layer horizontally, and pulls the sprayed polyurethane insulation layer and the infused polyurethane insulation layer.

[0015] Wherein, the support members are dispersedly installed on the keel purlins; the support members are fixedly connected to the keel purlins; at the same time, the keel purlins are fixed to the outer facade of the outer wall base through the support members. Further, the support member is padded with a sealing and heat-insulating pad and fixed to the outer facade of the outer wall base. The support member is fixed to the outer facade of the outer wall base through a first anchor bolt. The support member is fixed to the keel purlins through a second anchor bolt.

[0016] The exterior facing protective layer is pressed onto the outer facade of the injected polyurethane thermal insulation layer, and the exterior facing protective layer is pressed onto the keel purlins through self-tapping screws.

[0017] The support member includes a seat plate and a backing plate, which are fixed together vertically; the backing plate of the support member 3 is fixed to the keel purlin by the second anchor bolt, and the seat plate of the support member is fixed to the outer facade of the outer wall base by the first anchor bolt 2. In particular, the two adjacent vertical surfaces of the seat plate and the backing plate are fixed to the inclined rib plate. The backing plate is provided with a nail groove; the second anchor bolt passes through the nail groove and is fixedly connected to the keel purlin.

[0018] The edge of the outer surface protective layer is fixed with a nail edge or a clamp edge; one outer surface protective layer is fixed to the keel purlin with self-tapping screws through the nail edge of the edge, and then another outer surface protective layer is embedded in the nail edge through the clamp edge of the edge.

[0019] Furthermore, in order to achieve the above-mentioned purpose, the present invention is configured as follows:

[0020] In particular, the total thickness of the sprayed polyurethane insulation layer is a; the total thickness of the poured polyurethane insulation layer is b; the total thickness of the exterior protective layer is c; among them, the sprayed polyurethane insulation layer requires layered spraying, and the thickness of each spray layer should not exceed 30mm, and the exterior protective layer should not be less than 50mm. The total insulation design thickness is a+b, a is 2 / 3 of the total insulation design thickness, b is 1 / 3 of the total insulation design thickness, and at the same time, in order to ensure the quality of the poured polyurethane and the feasibility of construction, the b value should not be less than 50mm.

[0021] In particular, the support member is an L-shaped angle steel or a T-shaped angle steel member.

[0022] In particular, the keel purlins are arranged at equal intervals in the vertical direction, with a spacing of no more than 1m.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows: the composite external insulation of the exterior wall can more effectively reduce heat transfer and improve the insulation effect of the cold storage. Moreover, it helps to reduce the impact of external temperature changes on the cold storage structure, reduce temperature fluctuations, and protect the quality and storage period of goods. The stability of each joint structure and the reliability of the seal can be ensured. The spray polyurethane-injection polyurethane composite insulation layer makes it easy to fill the insulation material, which is conducive to the normal foaming of the polyurethane; thereby enhancing the insulation effect. Improve the stability of the overall structure; and the overall strength of the cold storage structure can be made unaffected by the insulation material. Under the premise of ensuring quality and safety, the low temperature environment is stable, which can more effectively reduce heat transfer, improve the insulation effect of the cold storage, extend the service life of the building, ensure the sealing of the insulation structure, and the overall construction is simple and convenient. It can effectively reduce the temperature loss of the cold storage and save the refrigeration electricity of the cold storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following drawings are for illustration only and should not be construed as limiting the present invention in any way. By referring to the following drawings, readers can understand the embodiments of the present invention and further understand the advantages and technical features of the present invention.

[0025] Figure 1 This is a schematic diagram of the main cross-sectional structure of Example 1 of the utility model.

[0026] Figure 2 This is a schematic diagram of the top cross-sectional structure of Example 1 of the utility model.

[0027] Figure 3 This is a schematic diagram of the connection structure between the support member and the keel purlin in Example 1 of the utility model.

[0028] Figure 4 This is a schematic diagram of the structure in which the outer facing protective layer in Example 1 of the utility model is fixedly connected to the keel purlin through concealed crimping strips and self-tapping screws.

[0029] Reference numerals include:

[0030] 1-exterior wall base, 2-first anchor bolt, 3-support member, 4-sealing insulation pad, 5-keel purlin, 6-second anchor bolt, 7-sprayed polyurethane insulation layer, 8-self-tapping screw, 9-exterior finishing protective layer, 10-injected polyurethane insulation layer, 11-concealed card crimping strip; 31-seat plate, 32-back plate, 33-oblique rib plate, 34-nail groove; 1101-nail edge, 1102-card edge.

[0031] Exterior wall base 1, first anchor bolt 2, support member 3, sealing insulation pad 4, keel purlin 5, second anchor bolt 6, sprayed polyurethane insulation layer 7, self-tapping screw 8, exterior facing protective layer 9, poured polyurethane insulation layer 10, concealed card crimping strip 11; seat plate 31, backing plate 32, inclined rib plate 33, nail groove 34; nail pressing edge 1101, card pressing edge 1102. DETAILED DESCRIPTION

[0032] It should be noted that:

[0033] The terms "comprise", "comprises", "having" and any variations thereof are intended to cover other possible options under the same logic that are not listed. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatus.

[0034] In the description of the present utility model, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In order to enable those skilled in the art to better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only an embodiment of a part of the utility model, rather than all the embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by ordinary technicians in the field to which the utility model belongs. When there is a conflict, the definitions in this specification shall prevail.

[0038] External insulation of civil cold storage is an important part of cold storage construction, which aims to reduce temperature loss, improve energy efficiency, and protect the stability of the internal environment of the cold storage. The insulation structure of civil cold storage is the key part to ensure the stability of the internal temperature of the cold storage and reduce energy loss. By selecting suitable insulation materials, adopting reasonable insulation layer structure and heat insulation and moisture-proof measures, and paying attention to construction points, the insulation effect and service life of civil cold storage can be effectively improved.

[0039] Commonly used materials for external insulation of civil cold storage walls include polyurethane, polystyrene board, rock wool board, perlite board, calcium silicate board, etc. Polyurethane (PU) has excellent thermal insulation effect, high strength and good corrosion resistance. Polyurethane materials can be constructed by on-site foaming to form a continuous insulation layer, effectively reducing the cold bridge phenomenon and improving the thermal insulation effect. In addition, polyurethane materials also have certain waterproof and moisture-proof properties, which helps to maintain a dry environment inside the cold storage.

[0040] These materials have different thermal insulation effects and costs, and the specific selection needs to be determined according to the actual requirements and budget of the project. For example, polyurethane insulation board has excellent thermal insulation performance and good waterproofness, but the cost is relatively high; while polystyrene board has a lower cost, but the thermal insulation performance is slightly inferior to polyurethane. Polystyrene foam board (EPS) is also one of the commonly used thermal insulation materials, with good thermal insulation performance and relatively low price. However, compared with polyurethane, its strength and corrosion resistance may be slightly inferior. Other materials, such as XPS extruded board, etc., these materials also have certain thermal insulation effects, but when choosing, it is necessary to comprehensively consider factors such as their performance, price and construction difficulty.

[0041] The principle of the utility model is that the cold storage external wall insulation system sets the insulation layer on the outside of the wall. Based on the research of the utility model, optimizing and improving the composite insulation structure in the cold storage external wall insulation system will help solve the existing technical problems and achieve the purpose of technical improvement.

[0042] The utility model comprises: a keel purlin 5, a sprayed polyurethane thermal insulation layer 7, an outer surface protective layer 9 and a poured polyurethane thermal insulation layer 10.

[0043] In the utility model, the keel purlin 5 is used as a supporting structure to penetrate and pull the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10 to form a composite insulation structure, and the keel purlin 5 is connected to the outer surface protective layer 9 on the outside. The keel purlin 5 is vertically extended and embedded in the paving direction of the composite insulation structure formed by the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10; the keel purlin 5 crosses the joint surface of the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10 horizontally, and pulls the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10.

[0044] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0045] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

[0046] The content of the present invention can be more easily understood by selecting the following preferred implementation methods and embodiments of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by ordinary technicians in the field to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0047] Embodiment 1: As attached Figure 1 , 2 As shown, the support members 3 are dispersedly installed on the keel purlins 5; the support members 3 are fixedly connected to the keel purlins 5; at the same time, the keel purlins 5 are fixed to the outer surface of the outer wall base layer 1 through the support members 3.

[0048] Furthermore, the support member 3 is padded with a sealing and heat-insulating pad 4 and is fixed on the outer surface of the outer wall base layer 1 .

[0049] Furthermore, the support member 3 is fixed to the outer surface of the outer wall base layer 1 through the first anchor bolt 2 .

[0050] Furthermore, the support member 3 is fixed to the keel purlin 5 by means of a second anchor bolt 6 .

[0051] In the embodiment of the utility model, the outer surface protective layer 9 is pressed onto the outer facade of the injected polyurethane thermal insulation layer 10 , and the outer surface protective layer 9 is pressed onto the keel purlin 5 through the self-tapping screws 8 .

[0052] In the embodiment of the utility model, as shown in the attached Figure 3 As shown, the support member 3 includes a seat plate 31 and a backing plate 32, and the seat plate 31 and the backing plate 32 are vertically fixed together; the backing plate 32 of the support member 3 is fixed to the keel purlin 5 through the second anchor bolt 6, and the seat plate 31 of the support member 3 is fixed to the outer surface of the outer wall base 1 through the first anchor bolt 2.

[0053] Furthermore, two adjacent vertical surfaces of the seat plate 31 and the back plate 32 are fixedly connected with the oblique rib plate 33 .

[0054] Furthermore, a nail groove 34 is formed on the backing plate 32 ; the second anchor bolt 6 passes through the nail groove 34 and is fixedly connected to the keel purlin 5 .

[0055] In the embodiment of the utility model, as shown in the attached Figure 4 As shown, the edge of the outer surface protective layer 9 is fixed with a nail edge 1101 or a clamping edge 1102; one piece of the outer surface protective layer 9 is fixed to the keel purlin 5 with a self-tapping screw 8 through the nail edge 1101 at the edge, and then another piece of the outer surface protective layer 9 is clamped on the nail edge 1101 through the clamping edge 1102 at the edge.

[0056] In the embodiment of the utility model, in order to ensure the insulation effect and service life of the civil cold storage, a series of heat insulation and moisture-proof measures need to be taken:

[0057] 1) Waterproof and moisture-proof layer: A waterproof and moisture-proof layer should be set on the outside of the insulation layer to prevent external moisture from penetrating into the insulation layer and affecting the insulation effect and service life.

[0058] 2) Sealing: Seal all gaps and holes in the cold storage to reduce air convection and heat transfer.

[0059] 3) Ventilation: Under the premise of ensuring the temperature inside the cold storage is stable, proper ventilation should be carried out to reduce the humidity inside the cold storage and reduce the growth of mold.

[0060] In the embodiment of the utility model, the support member 3 and the keel purlin 5 should meet the load-bearing verification requirements.

[0061] In the embodiment of the utility model, the composite external insulation structure of the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10 adopts the form of layered spraying + pouring polyurethane to ensure a cavity-free state.

[0062] In the embodiment of the utility model, preferably, the outer surface protective layer 9 should be made of non-combustible material and the thickness should not be less than 50mm. The outer surface protective layer 9 should be installed horizontally from bottom to top. After the installation is completed, the board seams should be sealed with glue to ensure the overall air tightness of the system. The outer surface protective layer 9 should be made of metal surface material, and the outer surface protective layer 9 should be a non-combustible material, such as a metal surface rock wool sandwich panel. At the same time, the entire metal surface is required to be in a sealed state to achieve the internal polyurethane insulation layer in a vapor-proof state, meeting the requirements of the "Cold Storage Design Standard" that "when the design temperature difference on both sides of the enclosure structure is greater than or equal to 5°C, a vapor barrier layer should be set on a layer with a higher temperature of the thermal insulation layer."

[0063] In the embodiment of the utility model, the total thickness of the sprayed polyurethane insulation layer 7 is a; the total thickness of the poured polyurethane insulation layer 10 is b; the total thickness of the exterior protective layer 9 is c; wherein, the sprayed polyurethane insulation layer 7 requires layered spraying, the thickness of each spraying layer should not exceed 30mm, and the exterior protective layer 9 should not be less than 50mm. During the pouring process of the poured polyurethane insulation layer 10, the foaming rate should be controlled to ensure the uniformity and integrity of the foaming. The total insulation design thickness is a+b, a is 2 / 3 of the total insulation design thickness, b is 1 / 3 of the total insulation design thickness, and at the same time, in order to ensure the quality of the poured polyurethane and the feasibility of construction, the b value should not be less than 50mm.

[0064] In the above, specifically, the spacing of the support members 3 should not be greater than 1m in the horizontal direction and 3m in the vertical direction, wherein the first anchor bolt 2 should be a high-strength anchor bolt, such as a chemical anchor bolt or an expansion anchor bolt, and the support member 3 should be a metal component, such as an L-shaped angle steel or a T-shaped angle steel, and a sealing insulation pad 4 should be provided at the contact surface between the support member 3 and the outer wall base to increase the thermal resistance and reduce the transmission of cold. The keel purlin 5 should be arranged at equal intervals in the vertical direction, and the spacing should not be greater than 1m. C-shaped steel should be used, and the anchor bolt 6 should be made of a high thermal resistance material, such as a thermally insulated nylon anchor bolt.

[0065] Embodiment 2: The support member 3 is a long groove C-shaped or I-shaped rigid structural member. The support member 3 is directly fixedly connected to the outer wall base layer 1 or the outer surface protective layer 9 at the corresponding position through the anchor member.

[0066] Embodiment 3: In the preparation of the sprayed polyurethane insulation layer 7 and the poured polyurethane insulation layer 10, ensure that the selected insulation materials meet national standards, have no defects such as cracks, deformation, and breakage, and prepare the required construction equipment and auxiliary materials. Before construction, the base of the cold storage exterior wall should be cleaned and leveled to ensure that the base surface is clean, oil-free, and free of loose animals. The insulation layer is constructed according to the design requirements, and attention is paid to the bonding firmness and surface flatness of the insulation material. For foaming materials such as polyurethane, the foaming speed and foaming thickness must also be controlled. A protective layer is set on the outside of the insulation layer to enhance the durability and impact resistance of the insulation system. The protective layer material can be waterproof coatings, metal plates, etc. After the construction is completed, acceptance work needs to be carried out to check whether the various indicators of the insulation system meet the design requirements. At the same time, regular maintenance and inspection are required during use to ensure the normal operation of the insulation system. When constructing the insulation structure of the civil cold storage, it is necessary to select suitable insulation materials according to the specific needs and actual conditions of the cold storage. Ensure that the construction process meets the relevant standards and specifications to ensure the integrity and sealing of the insulation layer. Strengthen quality control and inspection and acceptance work during the construction process to ensure that the quality and performance of the insulation structure meet the design requirements.

[0067] Based on the above embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention, so as to avoid exhaustively listing all implementation methods that are unnecessary and impossible to list comprehensively.

Claims

1. A composite external insulation structure of a non-cavity foamed sandwich exterior wall of a civil cold storage, comprising a keel purlin (5), a sprayed polyurethane insulation layer (7), an exterior facing protective layer (9) and a poured polyurethane insulation layer (10); characterized in that: The keel purlin (5) serves as a supporting structure and penetrates through and pulls the sprayed polyurethane insulation layer (7) and the poured polyurethane insulation layer (10) to form a composite insulation structure, and the keel purlin (5) is connected to the outer surface protective layer (9) at the outer side; the keel purlin (5) is vertically extended and embedded in the paving direction of the composite insulation structure formed by the sprayed polyurethane insulation layer (7) and the poured polyurethane insulation layer (10); the keel purlin (5) crosses the joint surface of the sprayed polyurethane insulation layer (7) and the poured polyurethane insulation layer (10) in a transverse direction, and pulls the sprayed polyurethane insulation layer (7) and the poured polyurethane insulation layer (10).

2. The non-cavity foamed sandwich exterior wall composite external insulation structure of the civil cold storage according to claim 1 is characterized in that: Support members (3) are discretely mounted on the keel purlins (5); the support members (3) are fixedly connected to the keel purlins (5); and at the same time, the keel purlins (5) are fixed to the outer facade of the outer wall base (1) through the support members (3).

3. The non-cavity foamed sandwich exterior wall composite external insulation structure of the civil cold storage according to claim 1 is characterized in that: The exterior facing protective layer (9) is pressed onto the outer facade of the injected polyurethane thermal insulation layer (10), and the exterior facing protective layer (9) is pressed onto the keel purlin (5) via self-tapping screws (8).

4. The non-cavity foamed sandwich exterior wall composite external insulation structure of the civil cold storage according to claim 2 is characterized in that: The support member (3) comprises a seat plate (31) and a backing plate (32), wherein the seat plate (31) and the backing plate (32) are vertically fixed together; the backing plate (32) of the support member (3) is fixed to the keel purlin (5) via a second anchor bolt (6), and the seat plate (31) of the support member (3) is fixed to the outer surface of the outer wall base (1) via a first anchor bolt (2).

5. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 1 is characterized in that: The edge of the outer surface protective layer (9) is fixed with a nailing edge (1101) or a clamping edge (1102); one outer surface protective layer (9) is fixed to the keel purlin (5) by means of a nailing edge (1101) at the edge with a self-tapping screw (8), and then another outer surface protective layer (9) is clamped on the nailing edge (1101) by means of a clamping edge (1102) at the edge.

6. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 1 is characterized in that: The total thickness of the sprayed polyurethane insulation layer (7) is a; the total thickness of the poured polyurethane insulation layer (10) is b; the total thickness of the exterior protective layer (9) is c; wherein the sprayed polyurethane insulation layer (7) requires layered spraying, the thickness of each sprayed layer should not exceed 30 mm, and the exterior protective layer (9) should not be less than 50 mm; the total insulation design thickness is a+b, a is 2 / 3 of the total insulation design thickness, b is 1 / 3 of the total insulation design thickness, and at the same time, in order to ensure the quality of the poured polyurethane and the feasibility of construction, the b value should not be less than 50 mm.

7. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 1 is characterized in that: The support member (3) is an L-shaped angle steel or a T-shaped angle steel member.

8. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 1 is characterized in that: The keel purlins (5) are arranged at equal intervals in the vertical direction, and the intervals are no greater than 1m.

9. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 2 is characterized in that: The support member (3) is padded with a sealing and heat-insulating pad (4) and fixed on the outer facade of the outer wall base (1); the support member (3) is fixed on the outer facade of the outer wall base (1) via a first anchor bolt 2; and the support member (3) is fixed on the keel purlin (5) via a second anchor bolt (6).

10. The non-cavity foamed sandwich exterior wall composite external insulation structure of a civil cold storage according to claim 4 is characterized in that: The two adjacent vertical surfaces of the seat plate (31) and the backing plate (32) are fixedly connected with the diagonal rib plate (33); the backing plate (32) is provided with a nail groove (34); the second anchor bolt (6) passes through the nail groove (34) and is fixedly connected to the keel purlin (5).

Images