Fireproof, moistureproof and mildew-proof structure for hydropower engineering

Abstract

The utility model provides a fireproof, moistureproof and mildew-proof structure for hydropower engineering. The fireproof, moistureproof and mildew-proof structure comprises a reinforced concrete wall, a reinforced concrete floor and a dry-hanging wallboard, wherein the dry hanging wallboard comprises a keel framework, a decorative plate and an adjustable ventilation shutter; due to the fact that the air space layer is reserved between the keel framework and the reinforced concrete wall, and the adjustable ventilation shutters are arranged on the decorative plate, the air space layer is communicated with the external atmosphere through the adjustable ventilation shutters, a convection circulation structure is formed, formation of 85% of condensate water can be reduced, and the moisture-proof and mildew-proof effects of the whole structure are improved. And by adopting a section bar connection assembly type construction method, quick installation is realized, the labor cost is reduced, and the construction period is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated structure technology, specifically relating to a fireproof, moisture-proof and mildew-proof structure for hydropower engineering. Background Technology

[0002] The underground spaces of hydropower projects, such as underground powerhouses and various corridors, are characterized by dampness. The main reasons for dampness in underground spaces include: first, water seepage on the surface of the rock mass; second, condensation on the walls. Dampness in the underground spaces of hydropower stations is a problem that cannot be ignored in the hydropower industry, which brings many hidden dangers to the safe and stable operation of hydropower station equipment, including: (1) Dampness in the underground spaces of hydropower projects leads to severe condensation on the pipes, which increases the humidity in the underground spaces, making the water supply pipes more prone to corrosion, and easily causing major defects such as pipe leakage or even pipe bursts, which seriously affects the safe operation of hydropower station units. (2) Excessive dampness in the underground spaces will lead to a harsher working environment for mechanical and electrical equipment, making it easier for equipment to age and be damaged, thereby shortening the service life of the equipment. When the humidity is most severe, the air humidity reaches 95%, causing condensation to form in all positions of the distribution panel equipment, generating a large amount of water on the surface of the equipment, causing short circuits between power supplies, equipment burnout, and also causing many hazards such as cable fires, increasing the frequency of defects in the unit equipment, increasing the frequency of equipment maintenance, leading to increased consumption of maintenance materials and spare parts, and increasing the operating and maintenance costs of the unit. (3) Excessive humidity in the underground space of a hydropower station can reduce the insulation of electrical equipment and easily lead to personal injury accidents such as electric shock. (4) In addition, the humid environment can also have adverse effects on the health of power station staff, especially the operators. Working in a humid environment for a long time can lead to various diseases such as cardiovascular and cerebrovascular diseases, skin diseases, respiratory allergies, joint pain, and rheumatism. When the environment is humid and the temperature is suitable, a large amount of mold will also be generated in the plant, which will also endanger the health of the staff.

[0003] Currently, the decorative panel structure used in the underground space decoration of hydropower projects has poor moisture and mildew resistance, complex construction procedures, and poor durability, which cannot meet the usage requirements. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a fireproof, moisture-proof and mildew-proof structure for hydropower projects, which can effectively solve the above problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] This utility model provides a fireproof, moisture-proof and mildew-proof structure for hydropower engineering, including: a reinforced concrete wall (1), a reinforced concrete floor slab (2) and a dry-hanging wall panel (3); wherein, the dry-hanging wall panel (3) includes a keel frame, a decorative panel (3-3) and adjustable ventilation louvers (3-8);

[0007] The keel frame is assembled on the inner side of the reinforced concrete wall (1) and between the two adjacent reinforced concrete floor slabs (2) on the upper and lower floors. An air gap is formed between the keel frame and the inner side of the reinforced concrete wall (1). The decorative panel (3-3) is assembled on the inner side of the keel frame. The decorative panel (3-3) is provided with the adjustable ventilation louvers (3-8). The air gap is connected to the outside atmosphere through the adjustable ventilation louvers (3-8).

[0008] Preferably, the reinforced concrete wall (1) is a 400mm C30 impermeable concrete wall with silicate cement base.

[0009] Preferably, the keel frame includes a main keel (3-1) and a secondary keel (3-2);

[0010] The main keel (3-1) is arranged vertically and in multiple columns from left to right; the upper and lower ends of each main keel (3-1) are connected and fixed to the reinforced concrete floor slab (2) through connecting components;

[0011] On the inner side of each of the main keels (3-1), multiple horizontal secondary keels (3-2) are welded and fixed from top to bottom. On the inner side of the secondary keels (3-2), the decorative panel (3-3) is installed by T-shaped hangers (3-6).

[0012] Preferably, the connecting assembly includes corner brackets (3-4) and bolts (3-5);

[0013] On both sides of the end of each main keel (3-1), an angle bracket (3-4) is provided. The vertical part of each angle bracket (3-4) is welded and fixed to the outside of the main keel (3-1), and the horizontal part of the angle bracket abuts against the bottom surface of the reinforced concrete floor slab (2). The horizontal part of the angle bracket is fitted with bolts (3-5) that extend into the interior of the reinforced concrete floor slab (2).

[0014] Preferably, the side of the corner bracket (3-4) that contacts the reinforced concrete floor slab (2) is pre-coated with anti-mildew primer; a rubber gasket is provided between the corner bracket (3-4) and the reinforced concrete floor slab (2).

[0015] Preferably, the main keel (3-1), the secondary keel (3-2), the corner bracket (3-4), and the bolt (3-5) are all galvanized.

[0016] Preferably, the secondary keel (3-2) is an L-shaped keel structure. The vertical part of the secondary keel is welded and fixed to the main keel (3-1), and the horizontal part of the secondary keel is connected to the horizontal part of the T-shaped hanger (3-6) by fastening bolts. The two ends of the vertical part of the T-shaped hanger (3-6) are each embedded into the slots of two adjacent decorative panels (3-3) to realize the splicing and installation of each decorative panel (3-3).

[0017] Preferably, the width of the air gap is greater than or equal to 30 mm, and a U-shaped water guide groove (3-7) is installed at the bottom of the air gap.

[0018] Preferably, the U-shaped water guide channel (3-7) is made of 304 stainless steel with a thickness of 3mm; the adjustable ventilation louver (3-8) is made of 304 stainless steel with a thickness of 3mm.

[0019] Preferably, the decorative panel (3-3) is a cement fiber board with pre-coated inorganic nano-coating, and the joints of the decorative panel (3-3) are filled with an expansion-type fireproof sealing strip and continuously sealed with 3mm silicone weather-resistant sealant.

[0020] The fireproof, moisture-proof, and mildew-proof structure for hydropower engineering provided by this utility model has the following advantages:

[0021] (1) Excellent fireproof, moisture-proof and mildew-proof properties:

[0022] Because an air gap is maintained between the keel frame and the reinforced concrete wall, and the decorative panels are equipped with adjustable ventilation louvers, the air gap is connected to the outside atmosphere through the adjustable ventilation louvers, forming a convection flow structure, which can reduce condensation formation by 85% and improve the overall structure's moisture-proof and mildew-proof effect.

[0023] Pre-coated cement fiberboard with inorganic nano-coating has good moisture-proof and fire-proof properties. Inorganic nano-coating has excellent properties such as environmental protection, antibacterial and fire resistance. The combination of the two can significantly improve the overall performance of the material.

[0024] (2) Convenient and efficient construction: The prefabricated construction method using profile connections enables rapid installation, reducing labor costs and construction time. The assembly mechanism design improves the stability and convenience of installation.

[0025] (3) Reusable: The modular structure is easy to disassemble and reuse, reducing maintenance costs.

[0026] (4) Through the triple mechanism of material composite, physical isolation and chemical protection, this structure achieves a synergistic improvement in fire prevention, moisture prevention and mildew prevention at the building system level, and solves the durability problem in the special environment of underground space of hydropower projects. Attached Figure Description

[0027] Figure 1 A schematic diagram of the keel frame for fireproofing, moisture-proofing and mildew-proofing structures in hydropower engineering provided by this utility model;

[0028] Figure 2 A cross-sectional schematic diagram of the fireproof, moisture-proof, and mildew-proof structure for hydropower engineering provided by this utility model;

[0029] Figure 3 A plan view of the fireproof, moisture-proof and mildew-proof structure for hydropower engineering provided by this utility model;

[0030] Figure 4 for Figure 1 Enlarged view of A in the middle;

[0031] Figure 5 for Figure 2 A magnified view of B in the middle.

[0032] Among them: 1. Reinforced concrete wall; 2. Reinforced concrete floor slab; 3. Dry-hanging wall panel; 3-1. Main keel; 3-2. Secondary keel; 3-3. Decorative panel; 3-4. Angle bracket; 3-5. Bolt; 3-6. T-shaped hanger; 3-7. U-shaped water guide channel; 3-8. Adjustable ventilation louver. Detailed Implementation

[0033] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] This utility model provides a fireproof, moisture-proof and mildew-proof structure for hydropower projects. It is a pre-coated inorganic nano-coating cement fiberboard structure with better moisture-proof, fireproof and mildew-proof effects, high overall strength and convenient construction.

[0035] See Figures 1-2 This utility model provides a fireproof, moisture-proof and mildew-proof structure for hydropower engineering, including: a reinforced concrete wall 1, a reinforced concrete floor slab 2 and a dry-hanging wall panel 3; wherein, the dry-hanging wall panel 3 includes a keel frame, a decorative panel 3-3 and adjustable ventilation louvers 3-8;

[0036] On the inner side of the reinforced concrete wall 1, and between the two adjacent reinforced concrete floor slabs 2, a keel frame is prefabricated and installed. An air gap is formed between the keel frame and the inner side of the reinforced concrete wall 1. On the inner side of the keel frame, a decorative panel 3-3 is prefabricated and installed. The decorative panel 3-3 is equipped with adjustable ventilation louvers 3-8, which are made of 3mm thick 304 stainless steel. The air gap is connected to the outside atmosphere through the adjustable ventilation louvers 3-8.

[0037] This utility model provides a fireproof, moisture-proof, and mildew-proof structure for hydropower engineering. Because an air gap is maintained between the keel frame and the reinforced concrete wall 1, and adjustable ventilation louvers 3-8 are installed on the decorative panel 3-3, the air gap is connected to the external atmosphere through the adjustable ventilation louvers 3-8, forming a convection circulation structure with an air exchange rate >1.5 times / hour. This reduces condensation formation by 85%, improving the overall moisture-proof and mildew-proof effect of the structure. In practical applications, the width of the air gap is greater than or equal to 30mm. Furthermore, a U-shaped water guide channel 3-7, made of 3mm thick 304 stainless steel, can be installed at the bottom of the air gap to achieve timely drainage of condensate.

[0038] To facilitate the construction and installation of the overall structure, the following measures are adopted:

[0039] The keel frame includes main keels 3-1 and secondary keels 3-2; the main keels 3-1 are arranged vertically in multiple rows from left to right; the upper and lower ends of each main keel 3-1 are connected and fixed to the reinforced concrete floor slab 2 via connecting components. Figure 3 and Figure 4 The connecting components include angle brackets 3-4 and bolts 3-5. An angle bracket 3-4 is installed on both sides of the end of each main keel 3-1. The vertical part of each angle bracket 3-4 is welded and fixed to the outer side of the main keel 3-1, while the horizontal part of the angle bracket abuts against the bottom surface of the reinforced concrete floor slab 2. Bolts 3-5, extending into the interior of the reinforced concrete floor slab 2, are installed on the horizontal part of the angle bracket. Therefore, the connecting components facilitate the connection and fixation between the main keel 3-1 and the reinforced concrete floor slab 2. Furthermore, the side of the angle bracket 3-4 that contacts the reinforced concrete floor slab 2 is pre-coated with an anti-mildew primer; a rubber gasket, made of EPDM rubber, is placed between the angle bracket 3-4 and the reinforced concrete floor slab 2. The main keel 3-1, secondary keel 3-2, angle brackets 3-4, and bolts 3-5 are all galvanized to further improve the structure's moisture-proof and mildew-proof performance. Specifically, the main keel 3-1 and secondary keel 3-2 are made of hot-dip galvanized steel with a zinc coating melting point ≥419℃. Corner codes 3-4 are hot-dip galvanized with a zinc layer thickness ≥85μm.

[0040] Combination Figure 5 On the inner side of each main keel 3-1, multiple horizontal secondary keels 3-2 are welded and fixed from top to bottom to form a keel skeleton; the keel skeleton is welded to form a continuous conductor to eliminate the risk of static electricity ignition.

[0041] Inside the secondary keel 3-2, decorative panels 3-3 are installed using T-shaped brackets 3-6. Specifically, the secondary keel 3-2 has an L-shaped structure. The vertical part of the secondary keel is welded and fixed to the main keel 3-1, and the horizontal part of the secondary keel is connected to the horizontal part of the T-shaped bracket 3-6 using fastening bolts. The two ends of the vertical part of the T-shaped bracket 3-6 are each embedded into the slots of two adjacent decorative panels 3-3, enabling the splicing and installation of each decorative panel 3-3. Therefore, the decorative panels 3-3 are connected and fixed to the secondary keel 3-2 using T-shaped brackets 3-6, facilitating the installation of the decorative panels 3-3.

[0042] In practical applications, the main keel 3-1 uses 50×50×5mm hot-dip galvanized square tubing, and the secondary keel 3-2 uses 50×50×5mm hot-dip galvanized angle steel. Angle brackets 3-4 use 50×50×5mm hot-dip galvanized angle brackets, and bolts 3-5 use M12×100 stainless steel expansion bolts. The U-shaped water guide channel 3-7 uses 3mm thick 304 stainless steel. The adjustable ventilation louvers 3-8 use 3mm thick 304 stainless steel. The reinforced concrete wall 1 uses 400mm thick C30 impermeable concrete wall with silicate cement base and a fire resistance rating ≥2.00h.

[0043] In this invention, the dry-hanging wall panel 3 system completely eliminates wet construction, removing the risk of mold growth from traditional plaster layers. The joints of the decorative panel 3-3 are filled with an expanding fire-resistant sealing strip and continuously sealed with 3mm silicone weather-resistant adhesive, incorporating nano-silver anti-mold agents. The decorative panel 3-3 uses pre-coated inorganic nano-coating cement fiberboard with a water absorption rate ≤8% and an inorganic nano-coating surface contact angle >110°, achieving a superhydrophobic effect. The inorganic nano-coating on the surface contains SiO2 aerogel, which forms a microporous heat-insulating layer upon contact with fire. The nano-coating contains Ag+ ion slow-release capsules (particle size <50nm), disrupting mold cell membranes. The cement substrate has a pH value >12.5, creating an alkaline antibacterial environment.

[0044] In this application, decorative panel 3-3 uses pre-coated inorganic nano-coated cement fiberboard. This pre-coated inorganic nano-coated cement fiberboard possesses excellent moisture-proof and fire-resistant properties, meeting the fire resistance requirements of walls. Fiber cement board is lightweight, high-strength, fire-resistant, and water-resistant, while the inorganic nano-coating exhibits excellent environmental protection, weather resistance, antibacterial properties, and fire resistance. The combination of these two significantly enhances the overall performance of the materials, improving the coating's weather resistance and antibacterial properties. The cement fiberboard substrate uses ordinary silicate cement, lignocellulose, alkali-resistant glass fiber, and other materials, manufactured through an autoclaving process, resulting in high strength, low density, and excellent fire resistance. The inorganic nano-coating is non-toxic and pollution-free, meeting green building and environmental protection policy requirements. It possesses antibacterial, anti-mildew, and fire-resistant (A1-level combustion performance) properties, making it suitable for various complex environments. The pre-coating process enables factory production, reducing on-site construction errors and improving installation efficiency.

[0045] Therefore, the dry-hanging wall panel 3 provided in this application ensures the structural strength of the dry-hanging wall panel 3 through the welding of the main keel 3-1 and the secondary keel 3-2; the installation and fixing of the entire dry-hanging wall panel 3 and the reinforced concrete floor slab 2 are facilitated by the use of angle brackets 3-4 and bolts 3-5, which has the advantage of convenient construction. The decorative panel 3-3 is connected and fixed to the secondary keel 3-2 by T-shaped hangers 3-6, which further simplifies the construction process and improves construction efficiency.

[0046] This utility model provides a fireproof, moisture-proof, and mildew-proof structure for hydropower engineering, which has the following advantages:

[0047] (1) Excellent fireproof, moisture-proof and mildew-proof properties:

[0048] Because an air gap is maintained between the keel frame and the reinforced concrete wall, and the decorative panels are equipped with adjustable ventilation louvers, the air gap is connected to the outside atmosphere through the adjustable ventilation louvers, forming a convection flow structure, which can reduce condensation formation by 85% and improve the overall structure's moisture-proof and mildew-proof effect.

[0049] Pre-coated cement fiberboard with inorganic nano-coating has good moisture-proof and fire-proof properties. Inorganic nano-coating has excellent properties such as environmental protection, antibacterial and fire resistance. The combination of the two can significantly improve the overall performance of the material.

[0050] (2) Convenient and efficient construction: The prefabricated construction method using profile connections enables rapid installation, reducing labor costs and construction time. The assembly mechanism design improves the stability and convenience of installation.

[0051] (3) Reusable: The modular structure is easy to disassemble and reuse, reducing maintenance costs.

[0052] (4) Through the triple mechanism of material composite, physical isolation and chemical protection, this structure achieves a synergistic improvement in fire prevention, moisture prevention and mildew prevention at the building system level, and solves the durability problem in the special environment of underground space of hydropower projects.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fireproof, moisture-proof, and mildew-proof structure for hydropower projects, characterized in that, include: Reinforced concrete wall (1), reinforced concrete floor slab (2) and dry-hanging wall panel (3); wherein the dry-hanging wall panel (3) includes a keel frame, decorative panel (3-3) and adjustable ventilation louvers (3-8); The keel frame is assembled on the inner side of the reinforced concrete wall (1) and between the two adjacent reinforced concrete floor slabs (2) on the upper and lower floors. An air gap is formed between the keel frame and the inner side of the reinforced concrete wall (1). The decorative panel (3-3) is assembled on the inner side of the keel frame. The decorative panel (3-3) is provided with the adjustable ventilation louvers (3-8). The air gap is connected to the outside atmosphere through the adjustable ventilation louvers (3-8).

2. A fireproof, moistureproof and moldproof structure for hydroelectric engineering according to claim 1, characterized in that, The reinforced concrete wall (1) is a 400mm C30 impermeable concrete wall with silicate cement base.

3. The fireproof, moisture-proof, and mildew-proof structure for hydropower engineering according to claim 1, characterized in that, The keel frame includes a main keel (3-1) and a secondary keel (3-2); The main keel (3-1) is arranged vertically and in multiple columns from left to right; the upper and lower ends of each main keel (3-1) are connected and fixed to the reinforced concrete floor slab (2) through connecting components; On the inner side of each of the main keels (3-1), multiple horizontal secondary keels (3-2) are welded and fixed from top to bottom. On the inner side of the secondary keels (3-2), the decorative panel (3-3) is installed by T-shaped hangers (3-6).

4. The fireproof, moisture-proof, and mildew-proof structure for hydropower engineering according to claim 3, characterized in that, The connecting components include corner brackets (3-4) and bolts (3-5); On both sides of the end of each main keel (3-1), an angle bracket (3-4) is provided. The vertical part of each angle bracket (3-4) is welded and fixed to the outside of the main keel (3-1), and the horizontal part of the angle bracket abuts against the bottom surface of the reinforced concrete floor slab (2). The horizontal part of the angle bracket is fitted with bolts (3-5) that extend into the interior of the reinforced concrete floor slab (2).

5. A fireproof, moistureproof and moldproof structure for hydroelectric engineering according to claim 4, characterized in that, The corner bracket (3-4) is pre-coated with anti-mildew primer on the side that contacts the reinforced concrete floor slab (2); a rubber gasket is provided between the corner bracket (3-4) and the reinforced concrete floor slab (2).

6. A fireproof, moistureproof and moldproof structure for hydroelectric engineering according to claim 4, characterized in that, The main keel (3-1), the secondary keel (3-2), the corner bracket (3-4), and the bolt (3-5) are all galvanized.

7. A fireproof, moistureproof and moldproof structure for hydroelectric engineering according to claim 3, characterized in that, The secondary keel (3-2) is an L-shaped keel structure. The vertical part of the secondary keel is welded and fixed to the main keel (3-1), and the horizontal part of the secondary keel is connected to the horizontal part of the T-shaped hanger (3-6) by fastening bolts. The two ends of the vertical part of the T-shaped hanger (3-6) are each embedded into the slots of two adjacent decorative panels (3-3) to realize the splicing and installation of each decorative panel (3-3).

8. The fireproof, moistureproof and moldproof structure for hydroelectric engineering according to claim 1, characterized in that, The width of the air gap is greater than or equal to 30 mm, and a U-shaped water guide channel (3-7) is installed at the bottom of the air gap.

9. A fire, moisture and mold resistant construction for hydroelectric projects according to claim 8, characterized in that, The U-shaped water guide channel (3-7) is made of 304 stainless steel with a thickness of 3mm; the adjustable ventilation louver (3-8) is made of 304 stainless steel with a thickness of 3mm.

10. The fireproof, moisture-proof, and mildew-proof structure for hydropower engineering according to claim 1, characterized in that, The decorative plate (3-3) adopts pre-coated inorganic nano-coating cement fiber plate, the plate joint of the decorative plate (3-3) is embedded with expansion fireproof sealing strip, and 3mm silicone weatherproof glue is continuously sealed.

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