Inflatable fireproof cover

Abstract

The invention provides an inflatable fireproof cover which comprises flexible fireproof cover cloth, an inflatable frame, a deflation port and a pneumatic composite line concentration hub. The inflation frame is fixedly arranged on the unfolding supporting portion of the flexible fireproof cover cloth and used for supporting the flexible fireproof cover cloth in the inflation state. And the deflation port is formed in the bottom of the inflatable frame. The pneumatic composite line concentration hub is arranged at the top of the inflation frame and comprises a mechanical bearing connector and an inflation opening, the mechanical bearing connector is connected with a grabbing mechanism of an external aircraft or a suspension arm to bear the gravity of the fireproof cover, and an automatic locking one-way valve is arranged in the inflation opening. When the external inflation probe is inserted into the inflation inlet, the air path is conducted, the inflation frame is inflated, the flexible fireproof cover cloth is unfolded, and when the external inflation probe is pulled out, the automatic locking one-way valve automatically seals the air path through the internal air pressure difference. According to the invention, rapid deployment in various complex rescue scenes can be realized, and the occupied space is small.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, and in particular to an inflatable fireproof cover. Background Technology

[0002] With the continuous growth of car ownership, vehicle fires are becoming increasingly frequent. In particular, the high-energy-density batteries in new energy vehicles can rapidly ignite and explode after thermal runaway, releasing large amounts of toxic smoke, posing a serious threat to human life, public property, and environmental safety. This problem is especially acute in enclosed or semi-enclosed spaces such as underground parking garages, under urban overpasses, and mountain roads, where fires spread rapidly and rescue efforts are extremely difficult.

[0003] Currently, emergency response to vehicle fires mainly relies on fire trucks and onboard firefighting equipment. However, fire trucks are large and difficult to access quickly and approach the fire scene in spaces with height and width restrictions, such as underground parking garages. They also face deployment difficulties in areas such as under overpasses and narrow alleyways. Even when they can reach the scene, it takes a long time to pull out hoses and extend the boom from the fire truck, often missing the golden opportunity for early firefighting.

[0004] Most existing fireproof covers are designed for deployment by ground personnel or fire truck cranes, which cannot adapt to complex rescue scenarios where fire trucks have difficulty accessing, such as underground garages and under overpasses. Moreover, most of them are rigid structures, which are large, inconvenient to carry, and difficult to deploy quickly. Summary of the Invention

[0005] The purpose of this invention is to provide an inflatable fireproof cover to solve the above-mentioned problems, which can be quickly deployed in various complex rescue scenarios and occupies little space.

[0006] This invention proposes an inflatable fireproof cover, comprising: Flexible fireproof cover fabric; An inflatable frame is fixedly installed at the unfolding support part of the flexible fireproof cover, and is used to support the flexible fireproof cover in the inflated state. An air vent is located at the bottom of the inflatable frame; A pneumatic composite hub is located on the top of the inflatable frame. The pneumatic composite hub includes a mechanical load-bearing interface and an air inlet. The mechanical load-bearing interface is connected to the gripping mechanism of an external aircraft or boom to bear the weight of the fireproof cover. An automatic locking one-way valve is installed inside the air inlet. The external inflation probe is inserted into the inflation port, opening the air passage and inflating the inflatable frame. The flexible fireproof cover unfolds, and when the external inflation probe is pulled out, the one-way valve automatically locks and the air passage is automatically closed by utilizing the internal air pressure difference.

[0007] In one embodiment, the inflatable frame includes an inner airtight liner and an outer high-temperature resistant pressure-bearing sleeve that wraps around the airtight liner. The outer high-temperature resistant pressure-bearing sleeve is woven from high-temperature resistant fibers. The flexible fireproof cover adopts a multi-layer composite structure, including an inner fireproof layer made of high silica fiber cloth and an outer structural reinforcement layer made of aluminized basalt fiber cloth. The inner fireproof layer and the outer structural reinforcement layer are bonded together in a dotted manner with a high-temperature resistant adhesive.

[0008] In one embodiment, the airtight inner liner of the inflatable frame is made of thermoplastic polyurethane film or silicone rubber coated cloth, and the outer high-temperature pressure-bearing sleeve is made of basalt fiber woven sleeve coated with ceramicized silicone rubber. The inflatable frame is fixed to the unfolding support part between the two layers of flexible fireproof cover fabric by high-temperature resistant aramid thread.

[0009] In one embodiment, the inflatable frame has a cage-like structure and is composed of multiple air columns spliced ​​together.

[0010] In one embodiment, the air column adopts a structure with an airtight inner liner heat-sealed connection and an outer high-temperature resistant pressure-bearing sleeve interlocked at the crisscrossing nodes. The airtight inner liner has a rounded transition at the corner of the joint; The outer high-temperature pressure-bearing sleeve is equipped with double-layer reinforcing webbing at the nodes.

[0011] In one embodiment, the inflatable frame is composed of multiple independent air columns that extend along the edge of the flexible fireproof cover structure to the bottom of the cover, and all the air columns together form the expansion structure of the flexible fireproof cover. The upper ends of each air column are connected to the inflation port, and each air column has an independent vent at its bottom.

[0012] In one embodiment, the fireproof cover is cubic in shape, and the inflatable frame is composed of four air columns, which extend along the edges of the flexible fireproof cover fabric to the bottom.

[0013] In one embodiment, an aramid fiber reinforcement layer is added at the lowest edge of the flexible fireproof cover cloth, 30-50cm away. A lead weight is fixedly installed at the bottom edge of the flexible fireproof cover. The inflatable frame is equipped with a safety overflow valve, which automatically releases pressure when the air pressure inside the inflatable frame exceeds a set threshold.

[0014] In one embodiment, the mechanical load-bearing interface of the pneumatic composite hub is an annular flange or a mushroom head snap-fit ​​structure. The inlet of the inflation port is provided with a tapered guide slope to guide the insertion of the external inflation probe.

[0015] In one embodiment, the top of the flexible fireproof cover is provided with a smoke exhaust port, which is a stainless steel flange ring connected to an external smoke exhaust pipe and a smoke exhaust fan to actively draw away the smoke inside the fireproof cover. The top inner surface of the flexible fireproof cover is provided with a spray pipe. The upper end of the spray pipe passes through the flexible fireproof cover and connects to the external water supply pipeline and water pump. The lower end is connected to multiple spray heads to spray water into the fireproof cover. The spray pipe is made of stainless steel and the spray heads are stainless steel atomizing nozzles. The flexible fireproof cover is equipped with multiple directional pressure relief valves, which automatically open when the air pressure inside the fireproof cover exceeds a set threshold.

[0016] Compared with the prior art, the beneficial effects of the inflatable fireproof cover of the present invention are as follows: 1) The present invention uses a pneumatic composite hub set on the top of the inflatable frame, which can be adapted to aircraft (such as eVTOL) for aerial hoisting and inflation deployment, and can also be adapted to the boom of ground fire trucks for deployment, to meet the fire fighting needs of different scenarios (such as under overpasses and narrow alleys).

[0017] 2) The invention uses a pneumatic composite hub at the top, which can withstand the weight during hoisting and achieve rapid air circuit connection and automatic sealing during inflation. It can quickly unfold and form a stable support structure in a short time, and the cover is not easy to collapse.

[0018] 3) This invention uses a composite cover cloth with a high-silica inner fireproof layer and an aluminized basalt outer reinforcing layer, as well as a composite inflatable frame with an airtight inner liner and a high-temperature pressure-bearing sleeve. It can effectively resist direct burning by flames and high-temperature radiation, ensuring that the cover remains structurally stable in the fire scene and is not easy to collapse. In addition, an aramid fiber reinforcing layer is added to the bottom, which can effectively resist the impact of explosive fragments.

[0019] 4) This invention uses flexible materials and an inflatable structure. It has a small volume after folding and can be stored in a special storage box on the roof of a fire truck. It does not occupy the interior space of the vehicle and is convenient for mobile transport. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the inflatable fireproof cover according to the first embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the inflatable frame in the inflatable fireproof cover according to the second embodiment of the present invention; Figure 3 This is a schematic diagram of the pneumatic composite hub in an inflatable fireproof cover according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the folded state of an inflatable fireproof cover according to an embodiment of the present invention; Figure 5This is a schematic diagram of the inflatable fireproof cover in the unfolded state according to an embodiment of the present invention.

[0021] Figure Labels

[0022] 1. Flexible fireproof cover; 2. Inflatable frame; 3. Vent port; 4. Pneumatic composite hub; 41. Mechanical load-bearing interface; 42. Inflation port; 5. Sprinkler pipe; 51. Sprinkler head. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention more readily understood, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that while many specific details are set forth in the following description to provide a thorough understanding of the invention, the invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] Secondly, the phrase "an embodiment" or "an embodiment" in this application refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. The phrases "in one embodiment" and "an embodiment" appearing in different places in this specification do not all refer to the same embodiment, nor are they embodiments that are mutually exclusive, either alone or selectively, with other embodiments. The terms "comprising" or "including" indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term "and / or" as used in this application includes any and all combinations of one or more of the related listed items.

[0026] This invention proposes an inflatable fireproof cover, see [link to relevant documentation]. Figure 1 , Figure 4The system comprises a flexible fireproof cover 1, an inflatable frame 2, a vent 3, and a pneumatic composite hub 4. The inflatable frame 2 is fixedly installed on the unfolded support portion (such as the outline edge) of the flexible fireproof cover 1 to support the cover when inflated. The inflatable frame 2 and the flexible fireproof cover 1 are connected as a whole to ensure that they do not separate or leak air during repeated folding and inflation. The vent 3 is located at the bottom of the inflatable frame 2, for example, by installing a large-diameter pressure relief valve or cap at the bottom of the frame. It is normally closed and opened when the cover needs to be stored, allowing the gas to be quickly released using the cover's own weight. Preferably, the vent 3 can be designed as a high-temperature resistant flexible Velcro seal or a zipper-type exhaust valve to ensure reliability in fire conditions. The pneumatic composite hub 4 is located at the top of the inflatable frame 2 and is preferably made of high-temperature resistant engineering plastics (such as polyetheretherketone, PEEK) or aluminum alloy, including a mechanical load-bearing interface 41 and an inflation port 42. The mechanical load-bearing interface 41 is connected to the gripping mechanism of an external aircraft or crane to bear the weight of the fireproof cover, and the inflation port 42 is equipped with an automatic locking one-way valve.

[0027] The system consists of an external inflation probe inserted into the inflation port, opening the air passage and inflating the inflatable frame. This causes the flexible fireproof cover to unfold. When the external inflation probe is removed, an automatic locking check valve automatically closes the air passage using the internal pressure difference. The opening pressure of the automatic locking check valve is no higher than 0.05 MPa to ensure that the inflation probe can easily open the valve core for inflation. After the probe is removed, the internal air pressure and spring force drive the valve core to close instantly, achieving a zero-leakage seal.

[0028] One embodiment of the flexible fireproof cover 1 of the present invention adopts a multi-layer composite structure, including an inner fireproof layer made of high-silica fiber cloth and an outer structural reinforcement layer made of aluminized basalt fiber cloth. The inner fireproof layer and the outer structural reinforcement layer are bonded together in a dotted manner with a high-temperature resistant adhesive, which can ensure a tight bond between the two layers while maximizing the flexibility and foldability of the cover. The high-silica fiber cloth, as the inner layer, has a softening point close to 1700°C and can directly withstand the instantaneous high temperature during battery explosion; the aluminized basalt fiber cloth, as the outer layer, has high strength properties that can withstand the tension when the inflatable frame is deployed, while the aluminized layer can effectively reflect the radiant heat of the fire.

[0029] An embodiment of the inflatable frame 2 of the present invention includes an inner airtight liner and an outer high-temperature resistant pressure-bearing sleeve wrapped around the airtight liner. The outer high-temperature resistant pressure-bearing sleeve is woven from high-temperature resistant fibers to limit the radial expansion of the airtight liner under inflation and provide structural rigidity. Preferably, the airtight liner of the inflatable frame 2 is made of thermoplastic polyurethane (TPU) film or silicone rubber coated cloth, and the outer high-temperature resistant pressure-bearing sleeve is made of basalt fiber woven sleeve coated with ceramicized silicone rubber. The size of the outer sleeve is slightly smaller than the theoretical size of the liner after inflation to ensure that after inflation, the liner will be tightly attached to the inner wall of the outer sleeve, and all the air pressure tension (circumferential stress) is borne by the high-strength basalt fiber woven sleeve, while the seams of the liner do not directly bear tensile force, thereby significantly improving the frame's pressure resistance and service life.

[0030] In one embodiment of the present invention, the flexible fireproof cover 1 has two layers, and the inflatable frame 2 is sewn and fixed to the unfolded support part (such as the edge) between the two layers of flexible fireproof cover 1 by high-temperature resistant aramid thread. Specifically, the inflatable frame 2 can be double-needle overlock sewn between the two layers of flexible fireproof cover 1 using high-temperature resistant aramid thread with a breaking strength ≥50N, with a stitch distance of 5-8mm.

[0031] In one embodiment, the inflatable frame 2 has a cage-like structure, composed of multiple air columns spliced ​​together. At the crisscrossing nodes, the air columns are connected by a heat-sealed airtight inner liner and an interlocking outer high-temperature resistant pressure-bearing sleeve. When the airtight inner liner is made of thermoplastic polyurethane (TPU) film, it forms an integrated multi-channel structure at the nodes through high-frequency welding. The airtight inner liner has rounded transitions at the corners of the nodes to avoid stress concentration at sharp corners due to air pressure, preventing the inner liner from bursting at the nodes. The outer high-temperature resistant pressure-bearing sleeve has double-layer reinforcing webbing at the nodes. This double-layer reinforcing webbing is woven from high-temperature resistant fibers (such as basalt fiber or aramid) and sewn onto the outer sleeve at the nodes with high-temperature resistant stitching, further enhancing the overall strength of the node area.

[0032] In another embodiment, the inflatable frame 2 adopts an independent air column structure, such as... Figure 2As shown, the inflatable frame 2 consists of multiple independent, non-connected air columns. Each air column extends along the edge (such as a ridge or a specific reinforcing rib) of the flexible fireproof cover 1's unfolded structure, from the top of the cover to the bottom edge of the cover. All air columns together form a support structure for the flexible fireproof cover 1, providing three-dimensional support for the cover. The upper ends of each air column are connected to the inflation port of the pneumatic composite hub 4 located at the top of the inflatable frame 2. To achieve communication between multiple independent air columns and a single inflation port, a multi-channel air distributor can be installed inside the hub or downstream of the inflation port, or the inflation port of the hub can be designed as a multi-pass structure with multiple air outlets, allowing high-pressure gas to enter all air columns simultaneously. Each air column has an independent vent 3 at its bottom, and each vent 3 can be individually controlled to open or close. This independent air column design differs from the cage structure that requires complex intersections, avoiding the crisscrossing connections between air columns. Since there are no T-shaped or cross-shaped nodes requiring heat sealing, the mechanical weaknesses of these nodes, such as susceptibility to air leakage and bursting due to structural abrupt changes and stress concentration, are eliminated, significantly improving the overall structural reliability and service life of the frame. Simultaneously, because each air column is independent and its air passages are not interconnected, the structure has redundant safety; even if a single air column leaks, the remaining air columns can still maintain the basic supporting shape of the cover, preventing complete collapse. Preferably, the fireproof cover is cubic in shape, and the inflatable frame 2 consists of four air columns, each extending along the edges of the flexible fireproof cover fabric 1 to the bottom.

[0033] In one embodiment of the present invention, an aramid fiber reinforcement layer is added 30-50cm from the bottom edge of the flexible fireproof cover 1. Aramid fibers (such as Kevlar) have extremely high tensile strength and impact resistance. This reinforcement layer can effectively block the flying debris generated by battery explosions during vehicle combustion, acting as an explosion-proof shield. Lead weights or internal sand filling are fixedly installed at the bottom edge of the flexible fireproof cover 1 to ensure that the fireproof cover falls rapidly under its own weight during release and fits tightly against the ground after covering, preventing smoke leakage from the bottom. It also helps resist lateral winds or blast shock waves, maintaining the stability of the cover. A safety overflow valve is installed on the inflatable frame 2, automatically releasing pressure when the air pressure inside the inflatable frame 2 exceeds a set threshold. This is because the temperature in a fire scene is extremely high, which may cause the gas inside the inflatable frame 2 to expand rapidly, resulting in a sudden increase in pressure. The safety overflow valve can release excess pressure in time, preventing the gas column from bursting due to overpressure.

[0034] In one embodiment of the present invention, the mechanical load-bearing interface of the pneumatic composite hub 4 is an annular flange or a mushroom-head snap-fit ​​structure. The inlet of the air inlet 42 is provided with a tapered guide slope to guide the insertion of an external air inlet probe. (See [reference]). Figure 3This allows the inflation probe of the aircraft or boom to be smoothly inserted into the inflation port even with slight shaking or positioning deviation, greatly reducing the difficulty of docking operations.

[0035] In one embodiment of the present invention, a flexible fireproof cover 1 is provided with multiple directional pressure relief valves, which automatically open when the air pressure inside the fireproof cover exceeds a set threshold. The directional pressure relief valves can adopt a gravity-driven hinged flap structure, controlled by a memory spring on the inside, normally closed, and automatically pushed open when the pressure exceeds the limit; or they can adopt a simpler perforated sticker structure, and the opening pressure is set by controlling the adhesive strength and area of ​​the sticker.

[0036] The inflatable fireproof cover of this invention can adapt to different application scenarios. When deployed in the air using an eVTOL (electric vertical takeoff and landing) aircraft, an active delivery module is installed below the aircraft. The active delivery module includes a mechanical gripper and a central telescopic inflation probe. The mechanical gripper first grasps the mechanical load-bearing interface of the pneumatic composite hub. The aircraft, carrying the folded fireproof cover, flies to the fire scene and hovers. Then, it extends the inflation probe, opens the automatic locking one-way valve, and starts the onboard high-pressure air source (such as a high-pressure gas cylinder) for in-flight inflation. The fireproof cover rapidly unfolds within seconds. Subsequently, the aircraft slowly descends, precisely covering the burning vehicle with the unfolded fireproof cover. After covering, the inflation probe retracts and is pulled out, the automatic locking one-way valve instantly closes to complete the air path separation; the mechanical gripper releases, completing the force path separation. The aircraft safely flies away from the scene. The entire process achieves fully automated aerial operations of "suspension-inflation-covering-detachment," which is particularly suitable for complex environments such as under overpasses where ground rescue vehicles cannot reach quickly.

[0037] When ground rescue vehicles are able to approach the fire scene, a crane deployment method can be used. The fireproof cover is normally folded and stored in a special storage box on the roof of the fire truck; see [link / reference]. Figure 3 After arriving at the scene, rescue personnel operated a hydraulic telescopic boom (with a maximum extension length of 3-5 meters) to extend it directly above the burning vehicle. The fireproof cover was then lowered by connecting the hook at the end of the boom to a pneumatic composite hub. (See below.) Figure 5 Subsequently, inflation and deployment are performed via an onboard high-pressure air cylinder connected to the inflation port. In ground-based applications, the top of the flexible fireproof cover can be equipped with a smoke exhaust vent, which can be integrated with a pneumatic composite hub. The smoke exhaust vent can use a stainless steel flange ring, connecting to an external smoke exhaust pipe and a smoke exhaust fan to actively remove smoke from inside the fireproof cover. A sprinkler pipe 5 can also be installed on the inner top surface of the flexible fireproof cover 1. The upper end of the sprinkler pipe 5 passes through the flexible fireproof cover 1 and connects to an external water supply pipe and a water pump, while the lower end connects to multiple sprinkler heads 51 to spray water into the fireproof cover. The sprinkler pipe 5 is made of stainless steel, and the sprinkler heads 51 are stainless steel atomizing nozzles.

[0038] It should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Such expressions are only for the purpose of making the description of the present invention simpler and more convenient, and do not indicate or imply that the component referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0039] In addition, unless otherwise explicitly specified and limited, terms such as “connection” and “setup” should be interpreted broadly in this application. For example, “connection” 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 an indirect connection through an intermediate medium; it can also be a connection between the internal components of two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] The constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in size, structure, shape, and proportions, as well as parameter values, installation arrangements, use of materials, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Various corresponding modifications and variations can be made by those skilled in the art according to this invention without departing from the spirit and essence of the invention, but such corresponding modifications and variations should fall within the protection scope of this invention.

Claims

1. An inflatable fireproof cover, characterized in that, include: Flexible fireproof cover fabric; An inflatable frame is fixedly installed at the unfolding support part of the flexible fireproof cover, and is used to support the flexible fireproof cover in the inflated state. An air vent is located at the bottom of the inflatable frame; A pneumatic composite hub is located on the top of the inflatable frame. The pneumatic composite hub includes a mechanical load-bearing interface and an air inlet. The mechanical load-bearing interface is connected to the gripping mechanism of an external aircraft or boom to bear the weight of the fireproof cover. An automatic locking one-way valve is installed inside the air inlet. The external inflation probe is inserted into the inflation port, opening the air passage and inflating the inflatable frame. The flexible fireproof cover unfolds, and when the external inflation probe is pulled out, the one-way valve automatically locks and the air passage is automatically closed by utilizing the internal air pressure difference.

2. The inflatable fireproof cover according to claim 1, characterized in that, The inflatable frame includes an inner airtight liner and an outer high-temperature resistant pressure-bearing sleeve that wraps around the airtight liner. The outer high-temperature resistant pressure-bearing sleeve is woven from high-temperature resistant fibers. The flexible fireproof cover adopts a multi-layer composite structure, including an inner fireproof layer made of high silica fiber cloth and an outer structural reinforcement layer made of aluminized basalt fiber cloth. The inner fireproof layer and the outer structural reinforcement layer are bonded together in a dotted manner with a high-temperature resistant adhesive.

3. The inflatable fireproof cover according to claim 2, characterized in that, The airtight inner liner of the inflatable frame is made of thermoplastic polyurethane film or silicone rubber coated cloth, and the outer high-temperature pressure-bearing sleeve is made of basalt fiber woven sleeve coated with ceramicized silicone rubber. The inflatable frame is fixed to the unfolding support part between the two layers of flexible fireproof cover fabric by high-temperature resistant aramid thread.

4. The inflatable fireproof cover according to claim 2, characterized in that, The inflatable frame has a cage-like structure and is made up of multiple air columns.

5. The inflatable fireproof cover according to claim 4, characterized in that, The air column adopts a structure with an airtight inner liner heat-sealed connection and an outer high-temperature resistant pressure-bearing sleeve interlocked at the crisscrossing nodes. The airtight inner liner has a rounded transition at the corner of the joint; The outer high-temperature pressure-bearing sleeve is equipped with double-layer reinforcing webbing at the nodes.

6. The inflatable fireproof cover according to claim 2, characterized in that, The inflatable frame is composed of multiple independent air columns that extend along the edge of the flexible fireproof cover structure to the bottom of the cover, and all the air columns together form the expansion structure of the flexible fireproof cover. The upper ends of each air column are connected to the inflation port, and each air column has an independent vent at its bottom.

7. The inflatable fireproof cover according to claim 6, characterized in that, The fireproof cover is cubic in shape, and the inflatable frame is composed of four air columns, which extend along the edges of the flexible fireproof cover fabric to the bottom.

8. The inflatable fireproof cover according to claim 2, characterized in that, An aramid fiber reinforcement layer is added at the lowest edge of the flexible fireproof cover cloth, 30-50cm away. A lead weight is fixedly installed at the bottom edge of the flexible fireproof cover. The inflatable frame is equipped with a safety overflow valve, which automatically releases pressure when the air pressure inside the inflatable frame exceeds a set threshold.

9. The inflatable fireproof cover according to any one of claims 1-8, characterized in that, The mechanical load-bearing interface of the pneumatic composite hub is a ring flange or a mushroom head snap-fit ​​structure. The inlet of the inflation port is provided with a tapered guide slope to guide the insertion of the external inflation probe.

10. The inflatable fireproof cover according to claim 1, characterized in that, The top of the flexible fireproof cover is provided with a smoke exhaust port, which is a stainless steel flange ring that connects to the external smoke exhaust pipe and the smoke exhaust fan to actively draw away the smoke inside the fireproof cover. The top inner surface of the flexible fireproof cover is provided with a spray pipe. The upper end of the spray pipe passes through the flexible fireproof cover and connects to the external water supply pipeline and water pump. The lower end is connected to multiple spray heads to spray water into the fireproof cover. The spray pipe is made of stainless steel and the spray heads are stainless steel atomizing nozzles. The flexible fireproof cover is equipped with multiple directional pressure relief valves, which automatically open when the air pressure inside the fireproof cover exceeds a set threshold.

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