A phase change material based fireproof and heat insulation storage structure for chemical warehouse
By employing a fireproof and heat-insulating storage structure made of phase change materials in chemical warehouses, combined with multi-layered protective measures, the problem of poor thermal inertia of traditional insulation materials has been solved, achieving effective temperature control and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU COMPLIANCE SIYUAN PROD SAFETY TECH SERVICE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional chemical warehouse insulation materials have poor thermal inertia, making it difficult to absorb large amounts of heat in a short time. In the early stages of a fire, external heat radiation is rapidly transferred to the interior, causing the temperature of the chemicals to rise sharply, posing a risk of fire and explosion. Some insulation materials are also flammable, which may exacerbate the fire.
The fireproof and heat-insulating storage structure based on phase change materials includes an injection-molded inner shell, chemical storage shelves, and phase change heat-insulating filler blocks, combined with an outer box and a fireproof foam layer. The phase change material absorbs latent heat during the phase change process, and combined with a ventilation structure and an aerogel heat insulation layer, it achieves multi-layer protection.
It effectively slows down the rise in internal temperature, provides a long-term temperature buffer, reduces the risk of fire and explosion, improves the safety of chemical storage, and has a reasonable structural layout that fully utilizes the characteristics of phase change materials.
Smart Images
Figure CN224577256U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical safe storage technology, and in particular to a fireproof and heat-insulating storage structure for chemical warehouses based on phase change materials. Background Technology
[0002] Items stored in chemical warehouses often possess flammable, explosive, corrosive, or toxic properties. High temperatures are a major cause of chemical fires, explosions, or accelerated decomposition and volatilization. Traditional warehouse insulation measures, such as the use of foam boards and rock wool, can reduce temperature to some extent, but they have poor thermal inertia. This means that when the temperature changes, the internal temperature of the material quickly follows the external temperature change, making it difficult to absorb a large amount of heat in a short time to maintain a stable internal environment. Especially in the early stages of a fire, external heat radiation or direct contact with flames can rapidly transfer to the warehouse interior, potentially causing a sharp rise in the temperature of the chemicals and posing a danger. Furthermore, some traditional insulation materials themselves are flammable and may exacerbate the fire. Summary of the Invention
[0003] To address the aforementioned technical problems, this utility model provides a fireproof and heat-insulating storage structure for chemical warehouses based on phase change materials. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.
[0004] The present invention adopts the following technical solution:
[0005] A fireproof and heat-insulating storage structure for a chemical warehouse based on phase change materials is provided, comprising: an injection-molded inner shell, a chemical storage shelf, and several phase change heat-insulating filler blocks; the chemical storage shelf is disposed inside the injection-molded inner shell, and several pre-set grooves are provided on the outer surface of the injection-molded inner shell; the phase change heat-insulating filler blocks are disposed in the pre-set grooves, and the phase change heat-insulating filler blocks are composed of flexible bags and phase change wax filled in the flexible bags; the chemical storage shelf includes: a frame and partitions, the frame is hollow to form a pre-set cavity, perlite particles are disposed in the pre-set cavity, a storage area is formed between adjacent partitions, and the pre-set grooves are located on the side of the storage area.
[0006] Furthermore, the aforementioned fireproof and heat-insulating storage structure for a chemical warehouse based on phase change materials further includes: an outer box and a fireproof foam layer; the outer box is assembled from composite silicate boards, the injection-molded inner shell is disposed within the outer box, and the fireproof foam layer is disposed between the inner wall of the outer box and the outer wall of the injection-molded inner shell.
[0007] Furthermore, the top of the outer casing is provided with a ventilation structure; the ventilation structure includes: a ventilation plate, a ventilation cavity, and a temperature control valve. The ventilation plate is connected to the outer casing, the ventilation cavity is located at the bottom of the ventilation plate, and several mounting slots communicating with the ventilation cavity are opened on the ventilation plate. The temperature control valve is located in the mounting slot.
[0008] Furthermore, the pre-set cavity and the pre-set groove are connected to the ventilation cavity via pipelines.
[0009] Furthermore, an aerogel insulation layer is provided on the outside of the ventilation cavity.
[0010] Furthermore, the frame is assembled from several columns and several beams, the partition is disposed on the beams, the internal space of the columns is connected to the internal space of the beams to form the pre-set cavity, and the partition is composed of foam plywood and galvanized steel plates disposed on the upper and lower surfaces of the foam plywood.
[0011] Furthermore, the inner shell of the injection-molded housing is provided with several outwardly protruding shell walls from top to bottom, and the two ends of the partition are embedded in the inner recessed space of the outwardly protruding shell walls, forming the pre-set groove between two adjacent outwardly protruding shell walls.
[0012] The beneficial effects of this utility model are as follows: This application sets up a chemical storage rack carrying phase change material inside the injection-molded inner shell, and sets up a pre-placed groove carrying phase change material outside the injection-molded inner shell. The pre-placed groove is designed on the side of the storage area formed between adjacent partitions. During the phase change process, the phase change material absorbs a large amount of latent heat. Compared with traditional heat insulation materials, it can more effectively delay the rise of internal temperature and provide a longer temperature buffer. Moreover, the structural arrangement is more reasonable, which can give full play to the characteristics of phase change material, thereby effectively controlling the temperature of the chemical storage environment and reducing the risk of fire, explosion or chemical reaction caused by high temperature. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a cross-sectional schematic diagram of a fireproof and heat-insulating storage structure for a chemical warehouse based on phase change materials according to this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the partition of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the chemical storage shelf of this utility model. Detailed Implementation
[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0018] like Figure 1-3 As shown, a fireproof and heat-insulating storage structure for chemical warehouses based on phase change materials is provided, which provides a safe and stable storage environment for chemicals and effectively resists external high temperatures and fire threats.
[0019] The fireproof and heat-insulating storage structure includes: an injection-molded inner shell 1, a chemical storage shelf 2 installed inside the injection-molded inner shell 1, an outer box 5, a fireproof foam layer 6, and several phase change heat-insulating filler blocks 3.
[0020] The injection-molded inner shell 1 is preferably made of high-strength, chemically resistant engineering plastics, such as polypropylene (PP) or ABS, and is integrally molded through injection molding. Its internal space is designed to accommodate the chemical storage rack 2. To facilitate the installation of the phase change heat insulation filler block 3, several pre-set grooves 11 are pre-set on the outer surface of the injection-molded inner shell 1, which are evenly distributed or distributed as needed. The positions of the pre-set grooves 11 correspond to the storage area 23 formed by the chemical storage rack 2.
[0021] The chemical storage rack 2 is the main structure used for actual storage of chemicals. The chemical storage rack 2 includes a frame 21 and partitions 22. The frame 21 is formed by welding or bolting together several uprights 211 and several beams 212 to create a stable three-dimensional frame structure. The internal spaces of the uprights 211 and the beams 212 are designed to be interconnected during welding or connection, forming a pre-placed cavity 213 that runs through the entire rack. In this embodiment, the pre-placed cavity 213 is filled with perlite particles impregnated with phase change salts, such as potassium nitrate-urea eutectic salt. Furthermore, the perlite particles have a porous structure, low density, and inherent thermal insulation and sound absorption properties. Filling the pre-placed cavity 213 further enhances the rack's thermal insulation performance and increases its structural weight, thereby improving stability.
[0022] Partitions 22 are mounted on the crossbeams 212 to divide the internal space of the frame 21 into multiple independent storage areas 23 for storing chemical containers. The specific structure of the partitions 22 can vary; in this embodiment, the partitions 22 are preferably composed of a layer of foam plywood 221 and galvanized steel sheets 222 covering its upper and lower surfaces. This structure ensures both the strength and corrosion resistance of the partitions 22, while also utilizing the lightweight and heat-insulating properties of the foam plywood 221. Storage areas 23 for storing chemicals are formed between two adjacent partitions 22. Pre-set slots 11 are located on the side of the storage areas 23, corresponding to the positions on the side walls of the injection-molded inner shell 1.
[0023] The phase change insulation filler block 3 consists of a flexible bag 31 and a phase change wax 32 filled within the flexible bag 31. The flexible bag 31 can be made of a high-temperature resistant and chemically stable flexible material, such as a high-temperature resistant plastic film or composite fabric, to accommodate the phase change wax 32 and allow its volume to undergo slight changes during the phase change process. The phase change wax 32 is a common phase change material with a suitable phase change temperature range. For example, depending on the temperature sensitivity of the chemicals to be stored, a phase change wax with a phase change temperature between 40°C and 80°C can be selected. When absorbing heat, it undergoes a solid-liquid phase change, absorbing a large amount of latent heat, thereby effectively delaying the rise in ambient temperature.
[0024] In this embodiment, the phase change heat insulation filler block 3 is disposed in a pre-set groove 11 on the outer surface of the injection-molded inner shell 1. When the external ambient temperature rises, especially when a fire causes a rapid increase in external temperature, the phase change wax 32 in the phase change heat insulation filler block 3 will begin to absorb heat and undergo a phase change, storing the heat inside itself. This significantly reduces the heat transferred to the inside of the injection-molded inner shell 1, i.e., the chemical storage shelf 2 and its storage area 23, thus playing a buffering and heat insulation role. Since the pre-set groove 11 is disposed on the side of the storage area 23, the phase change heat insulation filler block 3 can act more directly on the lateral heat protection of the storage area 23, the structural arrangement is more reasonable, and the characteristics of the phase change material can be more effectively utilized.
[0025] To further enhance the overall fireproof and heat-insulating performance of the fireproof and heat-insulating storage structure, this embodiment also includes an outer casing 5 and a fireproof foam layer 6. For example... Figure 1As shown, the outer casing 5 is assembled from multiple composite silicate boards through splicing, bolting, or bonding, forming a closed external casing structure slightly larger than the injection-molded inner casing 1. The injection-molded inner casing 1 is located inside the outer casing 5. A certain space is reserved between the inner wall of the outer casing 5 and the outer wall of the injection-molded inner casing 1, and filled with a fire-resistant foam layer 6. The fire-resistant foam layer 6 can be made of foam materials with good fire resistance and heat insulation properties, such as phenolic foam or polyurethane foam, and is filled densely through foaming or spraying processes. The composite silicate boards themselves also have good fire resistance and heat insulation properties, and together with the fire-resistant foam layer 6, they form a multi-layer protection system, further improving the overall fire resistance and heat insulation capabilities of the structure.
[0026] Furthermore, to effectively dissipate internal heat and prevent excessive internal pressure or temperature, a ventilation structure 7 is provided on the top of the outer casing 5. The ventilation structure 7 includes a ventilation plate 71, a ventilation cavity 72, and a temperature control valve 73. The ventilation plate 71 is connected to the top plate of the outer casing 5 and has several mounting slots. The ventilation cavity 72 is located at the bottom of the ventilation plate 71 and communicates with the mounting slots 711. The temperature control valve 73 is installed in the mounting slot 711. Its structure and working principle can refer to existing technologies, such as using a bimetallic strip or a fusible alloy. When the ambient temperature reaches a preset threshold, the temperature control valve 73 will automatically melt or deform and open, allowing the ventilation cavity 72 to communicate with the external environment, thereby achieving ventilation and heat dissipation.
[0027] The pre-placed cavity 213 located inside the chemical storage rack 2 and the pre-placed slot 11 located outside the injection-molded inner shell 1 can be connected to the ventilation cavity 72 via pipeline 8. The pipeline 8 can be made of high-temperature resistant and corrosion-resistant metal or plastic pipes. This design allows the ventilation cavity 72 to not only be directly ventilated to the outside when the temperature control valve 73 is opened, but also to guide the heat that may accumulate inside the pre-placed cavity 213 and the pre-placed slot 11 to the ventilation cavity 72 for discharge through the pipeline 8, further reducing the internal temperature.
[0028] To prevent the ventilation cavity 72 from becoming a thermal bridge or being damaged at high temperatures, an aerogel insulation layer 74 can be installed on the outside of the ventilation cavity 72. Aerogel is a super insulation material with extremely low thermal conductivity, which can effectively prevent heat from being transferred to the ventilation plate 71, protect the integrity of the ventilation structure 7, and maintain its function.
[0029] The inner shell 1 of the injection-molded housing has several outwardly protruding shell walls 12 arranged from top to bottom. During installation, the two ends of the partition 22 are embedded in the recessed spaces 13 formed inside the outwardly protruding shell walls 12, naturally forming pre-set grooves 11 between adjacent outwardly protruding shell walls 12 to accommodate the phase change heat insulation filler block 3. This design makes the installation of the partition 22 more stable, and the position of the pre-set grooves 11 is also precisely positioned, ensuring that the phase change heat insulation filler block 3 can effectively cover the side wall of the storage area 23.
[0030] In summary, this utility model provides a fireproof and heat-insulating storage structure for a chemical warehouse based on phase change materials. By installing a chemical storage rack 2 inside the injection-molded inner shell 1 to hold chemicals, and a pre-placed groove 11 for holding phase change materials outside the rack, particularly by arranging the pre-placed groove 11 on the side of the storage area 23, the phase change material can act more directly and effectively on the chemical area requiring protection. During the phase change process, the phase change material absorbs a large amount of latent heat, significantly delaying the rise in internal temperature compared to traditional insulation materials, providing a longer temperature buffer. Combined with multiple protective measures such as the outer shell 5, fireproof foam layer 6, ventilation structure 7, and aerogel insulation layer 9, this application can effectively control the temperature of the chemical storage environment, significantly reducing the risk of fire, explosion, or chemical reaction caused by high temperatures, and improving the safety of chemical warehouse storage.
[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A fireproof and heat-insulating storage structure for a chemical warehouse based on a phase change material, characterized by, include: The chemical storage rack comprises an injection-molded inner shell, a chemical storage shelf, and several phase change insulation filler blocks. The chemical storage shelf is disposed inside the injection-molded inner shell, and several pre-set grooves are provided on the outer surface of the injection-molded inner shell. The phase change insulation filler blocks are disposed in the pre-set grooves and are composed of flexible bags and phase change wax filled in the flexible bags. The chemical storage shelf includes a frame and partitions. The frame is hollow to form a pre-set cavity, and perlite particles are disposed in the pre-set cavity. A storage area is formed between adjacent partitions, and the pre-set grooves are located on the side of the storage area.
2. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 1 wherein, Also includes: The outer casing and the fireproof foam layer; the outer casing is assembled from composite silicate boards, the injection-molded inner shell is disposed inside the outer casing, and the fireproof foam layer is disposed between the inner wall of the outer casing and the outer wall of the injection-molded inner shell.
3. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 2 wherein, The outer casing has a ventilation structure on its top; the ventilation structure includes a ventilation plate, a ventilation cavity, and a temperature control valve. The ventilation plate is connected to the outer casing, the ventilation cavity is located at the bottom of the ventilation plate, and several mounting slots communicating with the ventilation cavity are opened on the ventilation plate. The temperature control valve is located in the mounting slot.
4. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 3 wherein, The pre-set cavity and the pre-set groove are connected to the ventilation cavity through pipelines.
5. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 4 wherein, An aerogel insulation layer is provided on the outside of the ventilation cavity.
6. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 5 wherein, The frame is assembled from several columns and several beams. The partition is set on the beam. The internal space of the column is connected to the internal space of the beam to form the pre-set cavity. The partition is composed of foam board and galvanized steel plate set on the upper and lower surfaces of the foam board.
7. A phase change material based fire resistant and thermal insulated storage structure for chemicals as claimed in claim 6 wherein, The injection-molded inner shell has several outwardly protruding shell walls from top to bottom. The two ends of the partition are embedded in the inner recessed space of the outwardly protruding shell walls, and the pre-set groove is formed between two adjacent outwardly protruding shell walls.