Combined structure for delamination minimally invasive repair of extruded plate

Abstract

The utility model relates to curtain wall repair technical field discloses a combination structure for extruded board delamination minimally invasive repair, including base layer wall and install the repair assembly outside base layer wall, the repair assembly includes the fire separation board perpendicularly arranged outside base layer wall, the side of fire separation board away from base layer wall is provided with the aperture symmetrically in advance, the outside of repair assembly is equipped with the wall surface surface layer assembly, the utility model discloses through the delay type polyurethane filling air interlayer gap, A grade fireproof partition board delamination barrier, minimally invasive glue injection technology, realizes the energy -conserving and fire -resistant performance synchronous promotion of not removing curtain wall, through the delay foaming characteristic of filling delay type polyurethane and A grade fireproof partition board delamination barrier combination, realizes the double function of filling compact and fire compartment, fireproof partition board aperture design avoids secondary opening, reduces construction damage.

Description

Technical Field

[0001] This utility model relates to the field of curtain wall repair technology, specifically to a combined structure for minimally invasive repair of extruded polystyrene board delamination. Background Technology

[0002] According to data provided by the China Building Energy Conservation Association, as of 2024, the total registered building area in China was approximately 67 billion square meters. Of this, residential and public buildings accounted for about 40 billion square meters. Buildings using non-transparent curtain wall finishes (such as stone or metal panel curtain walls) accounted for about 20%, or 8 billion square meters. Of these, 4 billion square meters were constructed before 2010 without insulation or energy-saving treatment, and another 4 billion square meters were constructed between 2010 and 2018. These buildings generally suffer from the following problems:

[0003] 1. Poor thermal performance: The air layer inside the curtain wall is not filled with insulation material, and the metal keel forms thermal bridges, resulting in a high overall heat transfer coefficient (usually ≥1.5 W / (㎡·K)) and significant building energy loss.

[0004] 2. Some early stone curtain walls have problems such as weathering and cracking, and metal panel curtain walls have problems such as coating peeling and corrosion, which affect the appearance and safety of the building.

[0005] 3. Fire hazards: The original curtain wall has no fireproof partitions inside, and flames can spread rapidly through the air layer during a fire, resulting in poor fire resistance.

[0006] 4. High difficulty in renovation: Traditional renovation requires the demolition of the facade, which has a long construction period (≥3 months), high cost (≥1800 yuan / ㎡), and affects the normal use of the building;

[0007] In existing new building construction technologies, rock wool boards are often used as infill materials, but they have the following drawbacks:

[0008] 1. Rock wool filling has low density (≤80kg / m³), making it prone to moisture absorption and causing insulation failure;

[0009] 2. The steel structure wall is simply anchored, resulting in unreliable connections and a tendency for it to detach from the inside.

[0010] 3. Rock wool boards are acidic and can corrode connectors;

[0011] To date, there are no relevant technologies, methods, or approaches in China to explain existing non-transparent curtain wall buildings, nor are there any relevant laws to comprehensively improve the fire protection and energy efficiency of existing buildings simultaneously. Furthermore, if renovation, demolition, and reconstruction are to be carried out, there are complex issues such as planning problems, standard issues, and regulatory basis, and the capital required is large and difficult to resolve. Therefore, those skilled in the art provide a composite structure for minimally invasive repair of extruded polystyrene board delamination to solve the problems mentioned in the background technology. Utility Model Content

[0012] The purpose of this utility model is to provide a combined structure for minimally invasive repair of extruded polystyrene board delamination, thereby solving the problem of curtain wall repair in the prior art.

[0013] This utility model provides the following technical solution: a combined structure for minimally invasive repair of extruded polystyrene board delamination, including a base wall and a repair component installed on the outside of the base wall. The repair component includes a fireproof partition plate vertically arranged on the outside of the base wall. The side of the fireproof partition plate away from the base wall has symmetrically preset notches. A wall surface component is sleeved on the outside of the repair component.

[0014] As a preferred embodiment of the above technical solution, the wall surface component includes an insulation layer, a main keel, a secondary keel, and connectors that are sequentially pre-installed on the outside of the base wall. The main keel, secondary keel, and connectors are all fitted onto the outside of the fireproof partition.

[0015] As a preferred embodiment of the above technical solution, the wall surface component further includes an air gap layer and a finishing layer that are sequentially preset in the air gap layer, the air gap layer communicating with a pre-set opening in the side wall of the fireproof partition board, and the interior of the air gap layer being filled with slow-release polyurethane.

[0016] As a preferred embodiment of the above technical solution, the decorative layer is fitted onto the fireproof partition plate, a groove is pre-set in the middle of the decorative layer, and the groove is connected to the air gap layer. The decorative layer is filled with sealant through the groove, and the sealant is gray weather-resistant silicone sealant.

[0017] As a preferred embodiment of the above technical solution, an embedded plate is fixedly installed on the outer side of the base wall, the embedded plate is embedded in the inner side of the insulation layer, a chemical anchor is sleeved in the middle of the embedded plate, and the embedded plate is fixedly connected to the base wall by the chemical anchor.

[0018] As a preferred embodiment of the above technical solution, the fireproof partition is an asbestos-free calcium silicate fireproof partition.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention achieves simultaneous improvement in energy saving and fire resistance without removing the curtain wall by filling the air gaps with slow-release polyurethane, using Class A fireproof partitions for layered barrier, and a minimally invasive injection process. The combination of the delayed foaming characteristics of the slow-release polyurethane filling and the layered barrier of the Class A fireproof partition achieves the dual functions of dense filling and fire-resistant partitioning. The notch design of the fireproof partition avoids secondary drilling and reduces construction damage. Attached Figure Description

[0021] Figure 1 A schematic diagram of a composite structure for minimally invasive repair of extruded polystyrene board delamination.

[0022] Figure 2 This is a top view of a composite fireproof partition board for minimally invasive repair of extruded polystyrene board delamination.

[0023] Legend:

[0024] 1. Base wall; 2. Chemical anchors; 3. Embedded plate; 4. Insulation layer; 5. Fireproof partition board; 6. Sealant. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figure 1 and Figure 2 As shown, this utility model provides a technical solution: a combined structure for minimally invasive repair of extruded polystyrene board delamination, including a base wall 1 and a repair component installed on the outside of the base wall 1. The repair component includes a fireproof partition 5 vertically arranged on the outside of the base wall 1. The side of the fireproof partition 5 away from the base wall 1 has symmetrically preset notches. A wall surface component is sleeved on the outside of the repair component.

[0027] As one implementation method in this embodiment, please refer to Figure 1 As shown, the wall surface component includes an insulation layer 4, a main keel, a secondary keel, and connectors that are sequentially pre-installed on the outside of the base wall 1. The main keel, secondary keel, and connectors are all fitted onto the outside of the fireproof partition 5.

[0028] Furthermore, the wall surface component also includes an air gap layer and a finishing layer that are sequentially pre-set in the air gap layer and the side wall of the fireproof partition 5, and the interior of the air gap layer is filled with slow-release polyurethane.

[0029] Slow-blown polyurethane specifically refers to slow-blown flexible polyurethane foam: apparent density 8-13 kg / m³, thermal conductivity ≤0.040 W / (m·K), and fire performance rating B1; it adopts a two-component structure (isocyanate MDI + polyether polyol), with delayed foaming characteristics (high initial fluidity, slow growth after 8 seconds), which does not affect the load-bearing safety of the non-transparent curtain wall system, while ensuring the dense filling of air gaps (density ≥95%).

[0030] Furthermore, the decorative layer is fitted with the fireproof partition 5. The decorative layer has a groove in the middle, and the groove is connected to the air gap layer. The decorative layer is filled with sealant 6 through the groove. The sealant 6 is gray weather-resistant silicone sealant.

[0031] Weather-resistant silicone sealant: tensile modulus ≥ 0.4 MPa, elongation at break ≥ 200%, matching the original curtain wall color (supports RAL color card matching).

[0032] As one implementation method in this embodiment, please refer to Figure 1 As shown, an embedded plate 3 is fixedly installed on the outer side of the base wall 1. The embedded plate 3 is embedded in the inner side of the insulation layer 4. A chemical anchor 2 is sleeved in the middle of the embedded plate 3. The embedded plate 3 and the base wall 1 are fixedly connected by the chemical anchor 2.

[0033] Furthermore, the fireproof partition 5 is an asbestos-free calcium silicate fireproof partition;

[0034] The asbestos-free calcium silicate fireproof partition is specifically a Class A asbestos-free calcium silicate fireproof partition: 8mm thick, flexural strength ≥8MPa, fire resistance limit ≥1.0h; the surface has a 30mm×30mm injection notch for polyurethane spraying.

[0035] Working Principle: The process includes the following steps: Curtain wall inspection and pretreatment; using an endoscope (resolution ≥1080P) to inspect the thickness of the air gap and the distribution of connectors, marking thermal bridge areas; removing the original joint sealant and backing material, cleaning the base surface until no residue remains; Class A fireproof partition installation: cutting Class A fireproof partitions according to the joint dimensions, leaving injection notches; slow-release polyurethane filling: spraying two-component polyurethane into the air gap through the notches, controlling the foaming rate (initial flow rate ≥0.5L / min, expansion ratio ≥30 times), filling in 3 stages (30-second intervals), final density ≥95% → sealing and acceptance: embedding polystyrene round rod backing (diameter = gap width × 1.3), injecting weather-resistant silicone sealant → using an infrared thermal imager (accuracy ±0.1℃) to detect filling uniformity, heat transfer coefficient reduction ≥40%;

[0036] The specific steps of the minimally invasive construction process are as follows: the internal filling is completed through the notch for injecting adhesive into the dividing joints; the filling process is monitored in real time using an endoscope to accurately locate the thermal bridge area; and thermal defect maps are generated by combining infrared thermal imaging technology to automatically optimize the filling process.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A composite structure for minimally invasive repair of extruded polystyrene board delamination, comprising a base wall (1) and repair components installed on the outside of the base wall (1), characterized in that: The repair component includes a fireproof partition plate (5) vertically installed on the outside of the base wall (1). The fireproof partition plate (5) has symmetrical notches on the side away from the base wall (1). A wall surface component is fitted on the outside of the repair component.

2. The composite structure for minimally invasive repair of extruded polystyrene board delamination according to claim 1, characterized in that: The wall surface component includes an insulation layer (4), a main keel, a secondary keel, and connectors that are sequentially pre-installed on the outside of the base wall (1). The main keel, secondary keel, and connectors are all fitted on the outside of the fireproof partition board (5).

3. The composite structure for minimally invasive repair of extruded polystyrene board delamination according to claim 2, characterized in that: The wall surface component also includes an air gap layer and a finishing layer that are sequentially preset in the air gap layer and the fireproof partition board (5) with a pre-set opening in the air gap layer and the interior of the air gap layer is filled with slow-release polyurethane.

4. The composite structure for minimally invasive repair of extruded polystyrene board delamination according to claim 3, characterized in that: The decorative layer is fitted onto the fireproof partition plate (5). A groove is pre-set in the middle of the decorative layer, and the groove is connected to the air gap layer. The decorative layer is filled with sealant (6) through the groove. The sealant (6) is gray weather-resistant silicone sealant.

5. The composite structure for minimally invasive repair of extruded polystyrene board delamination according to claim 2, characterized in that: An embedded plate (3) is fixedly installed on the outer side of the base wall (1). The embedded plate (3) is embedded in the inner side of the insulation layer (4). A chemical anchor (2) is sleeved in the middle of the embedded plate (3). The embedded plate (3) is fixedly connected to the base wall (1) through the chemical anchor (2).

6. The composite structure for minimally invasive repair of extruded polystyrene board delamination according to claim 1, characterized in that: The fireproof partition (5) is an asbestos-free calcium silicate fireproof partition.

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