Zipper emergency relief escape door for use in a pressurized building

Abstract

The application relates to an escape door used in a closed pressurized building, which comprises a door frame, an interior decorative door, an air-tight film and an outer pressure-bearing door arranged in sequence from inside to outside; the interior decorative door is hinged to the door frame and opens inward; the air-tight film is fixed to the door frame through air-tight components around the air-tight film, and the air-tight film is provided with a sealing zipper for emergency pressure relief and personnel passing; the outer pressure-bearing door is hinged to the door frame and opens outward; when an emergency occurs in the closed pressurized building, the interior decorative door is opened, the sealing zipper on the air-tight film is pulled, the pressurized building is subjected to emergency pressure relief, and after the air pressure is reduced to a safe value, the outer pressure-bearing door is opened for emergency evacuation. The application adopts the form of combination of the zipper type air-tight film and the air-permeable pressure-bearing door, the zipper type air-tight film is used to achieve the functions of structural air-tightness and rapid pressure relief, the air-permeable pressure-bearing door is used to achieve the functions of pressure bearing and protection, and when an emergency occurs in the pressurized closed building, the pressure can be rapidly relieved for escape.

Description

Technical Field

[0001] This invention relates to the field of sealed pressurized building technology, and more specifically to an escape door used in sealed pressurized buildings. Background Technology

[0002] Existing safety escape doors used on high-speed trains and airplanes all employ mechanical hydraulic systems, which have complex structural designs, high overall costs, and lack combined pressure relief and escape functions. When using air-supported membrane structures, safety doors are required within the structure to facilitate rapid escape in emergencies, typically employing lift-type or swing-type sealed structures. However, these have weak pressure resistance (usually a 250Pa pressure difference between the inside and outside), making them highly susceptible to accidental opening due to internal gas pressure, leading to gas leakage within the air-supported membrane structure. Therefore, currently available mature products cannot meet the pressure relief and escape requirements of pressurized sealed structures. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a zipper-type emergency pressure relief escape door for use in a sealed pressurized building, which addresses the shortcomings of the existing technology. It combines a membrane structure with a pressure-bearing door structure to meet the structural characteristics of the new pressurized sealed building, and can effectively solve the problem of pressure relief and escape in emergency situations in sealed pressurized buildings. It can simultaneously have the functions of safe pressure relief and rapid escape. It is simple in structure, safe and reliable, and reusable.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] An escape door for use in a sealed pressurized building includes a door frame, and further includes an inner decorative door, an airtight membrane, and an outer pressure-bearing door arranged sequentially from the inside to the outside; the inner decorative door is hinged to the door frame and opens inward; the airtight membrane is fixed to the door frame around its perimeter by airtight components, and the airtight membrane is provided with a sealing zipper for emergency depressurization and personnel passage; the outer pressure-bearing door is hinged to the door frame and opens outward.

[0006] In the above scheme, the inner wall of the outer pressure-bearing door is attached to the airtight membrane to bear the lateral pressure of the airtight membrane and constrain the tensile deformation of the airtight membrane.

[0007] In the above scheme, the external pressure-bearing door is a non-airtight door.

[0008] In the above scheme, the external pressure-bearing door is provided with local grilles or ventilation holes.

[0009] In the above scheme, the size of the grille or vent holes is determined according to the overall depressurization rate of the sealed pressurized building.

[0010] In the above scheme, the external pressure-bearing door is made of steel structure processed and welded.

[0011] In the above solution, a gap is provided between the interior decorative door and the airtight membrane.

[0012] In the above solution, the airtight component includes a pressure strip, a baffle, and bolts; the pressure strip and the baffle are located on the inner and outer sides of the airtight membrane respectively and are fixed to the door frame. The pressure strip, the airtight membrane, and the baffle are fixedly connected by bolts and sealed with sealant.

[0013] In the above scheme, the sealing zipper is installed in the middle of the airtight membrane.

[0014] In the above scheme, the sealing zipper is either vertical or arc-shaped.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention combines a zipper-type airtight membrane with a breathable pressure-bearing door. The zipper-type airtight membrane provides excellent structural airtightness and rapid pressure relief, while the breathable pressure-bearing door provides pressure resistance and protection. In case of an emergency in a pressurized, sealed building, rapid pressure relief and escape are possible. It has the advantages of simple structure, safety, reliability, and reusability. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a cross-sectional view of the zipper-type emergency pressure relief escape door of the present invention (with the inner decorative door and the outer pressure-bearing door closed);

[0019] Figure 2 This is a cross-sectional view of the zipper-type emergency pressure relief escape door of the present invention (with the inner decorative door and the outer pressure-bearing door in the open state);

[0020] Figure 3 This is a front view of the outer pressure-bearing door of the zipper-type emergency pressure relief escape door of the present invention;

[0021] Figure 4 This is a schematic diagram of the sealing zipper of the zipper-type emergency pressure relief escape door of the present invention.

[0022] In the picture: 10. Interior decorative door;

[0023] 20. Airtight membrane;

[0024] 30. External pressure-bearing door; 31. Grille or ventilation holes;

[0025] 40. Sealed zipper;

[0026] 50. Airtight components; 51. Pressure strips; 52. Baffles; 53. Bolts;

[0027] 60. Door frame. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1-4 As shown in the illustration, an escape door for use in a sealed pressurized building according to an embodiment of the present invention includes a door frame 60, and further includes an inner decorative door 10, an airtight membrane 20, and an outer pressure-bearing door 30 arranged sequentially from the inside to the outside. The inner decorative door 10 is hinged to the door frame 60 and opens inward. The airtight membrane 20 is fixed to the door frame 60 around its perimeter by airtight components 50, and a sealing zipper 40 is provided on the airtight membrane 20 for emergency depressurization and personnel passage. The outer pressure-bearing door 30 is hinged to the door frame 60 and opens outward. In the event of an emergency in the sealed pressurized building, the inner decorative door 10 is opened, and the sealing zipper 40 on the airtight membrane 20 is pulled to depressurize the pressurized building in an emergency. After the air pressure drops to a safe value, the outer pressure-bearing door 30 is opened for emergency evacuation. This invention addresses the structural characteristics of novel pressurized sealed buildings by combining a membrane structure with a pressure-bearing door structure. This effectively solves the problem of depressurization and escape in emergency situations in pressurized sealed buildings, simultaneously providing safe depressurization and rapid escape functions. The structure is simple, safe, reliable, and reusable.

[0030] Further optimization involves designing the external pressure-bearing door 30 as a non-airtight door, equipped with localized grilles or ventilation holes 31. The size of the grilles or ventilation holes 31 is determined based on the overall depressurization rate of the sealed pressurized building. The inner wall of the external pressure-bearing door 30 is in close contact with the airtight membrane 20, serving two purposes: firstly, it bears the lateral pressure of the airtight membrane 20 and restrains its tensile deformation; secondly, it protects operators from injury caused by excessively rapid depressurization, preventing them from being sucked into the depressurization port. The external pressure-bearing door 30 is constructed from a steel structure through processing and welding.

[0031] Further optimization involves the interior decorative door 10 serving both decorative and protective functions. Since the airtight membrane 20 is easily damaged, there is a risk of accidental operation due to human error, potentially causing a depressurization of the entire building complex. The interior decorative door 10 is made of ordinary materials and has a gap between it and the airtight membrane 20 to protect the membrane. The interior decorative door 10 is equipped with a control system for opening and closing. It can only be opened freely in an emergency by pressing an emergency button; under normal circumstances, it cannot be opened to prevent accidental operation.

[0032] Further optimization involves the airtight component 50, which includes a pressure strip 51, a baffle 52, and bolts 53. The pressure strip 51 and baffle 52 are located on the inner and outer sides of the airtight membrane 20, respectively, and are fixed to the door frame 60. The pressure strip 51, airtight membrane 20, and baffle 52 are connected by bolts 53 and sealed with sealant. The airtight membrane 20 provides airtightness, and by sealing the airtight membrane 20 with baffles 52, pressure strips 51, and bolts 53, the pressurized building exhibits better airtightness.

[0033] Further optimization involves installing the sealing zipper 40 in the center of the airtight membrane 20. The sealing zipper 40 is either arc-shaped or vertically straight. See [reference needed]. Figure 3 .

[0034] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An escape door for use in a sealed pressurized building, comprising a door frame, characterized in that, It also includes an inner decorative door, an airtight membrane, and an outer pressure-bearing door arranged sequentially from the inside out; the inner decorative door is hinged to the door frame and opens inward; the airtight membrane is fixed to the door frame around its perimeter by airtight components, and the airtight membrane is equipped with a sealing zipper for emergency pressure relief and personnel passage; the outer pressure-bearing door is hinged to the door frame and opens outward; the inner wall of the outer pressure-bearing door is in contact with the airtight membrane to bear the lateral pressure of the airtight membrane and constrain the tensile deformation of the airtight membrane, and the outer pressure-bearing door is a non-airtight door; there is a gap between the inner decorative door and the airtight membrane.

2. The escape door for use in a sealed pressurized building according to claim 1, characterized in that, The external pressure-bearing door is provided with partial grilles or ventilation holes.

3. The escape door for use in a sealed pressurized building according to claim 2, characterized in that, The size of the grille or ventilation holes is determined according to the overall depressurization rate of the sealed pressurized building.

4. The escape door for use in a sealed pressurized building according to claim 1, characterized in that, The external pressure-bearing door is made of steel structure processed and welded.

5. The escape door for use in a sealed pressurized building according to claim 1, characterized in that, The airtight component includes a pressure strip, a baffle, and bolts; the pressure strip and the baffle are located on the inner and outer sides of the airtight membrane respectively and are fixed to the door frame. The pressure strip, airtight membrane, and baffle are fixedly connected by bolts and sealed with sealant.

6. The escape door for use in a sealed pressurized building according to claim 1, characterized in that, The sealing zipper is installed in the middle of the airtight membrane.

7. The escape door for use in a sealed pressurized building according to claim 1 or 6, characterized in that, The sealing zipper is either vertical or curved.

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