Nuclear power fireproof door with double-layer sealing structure
By employing a double-layer sealing structure and an intelligent smoke detection system, the problem of unstable sealing of nuclear power plant fire doors during fires has been solved, effectively preventing the spread of smoke and fire and improving the safety and service life of nuclear power plant fire doors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TONGXIAO FIRE PROOFING DOOR
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-19
AI Technical Summary
Existing nuclear power plant fire doors have unstable sealing properties during fires, cannot effectively prevent the spread of smoke, and the materials are prone to aging in high-temperature environments, failing to meet the requirements of high safety standards.
It adopts a double-layer sealing structure, including an inflatable sealing ring and a smoke sensor. It automatically adjusts the sealing state by sensing the smoke concentration. The inflatable sealing ring expands and fills the door gap under vacuum and air pressure difference. Combined with stainless steel, alloy steel and aluminum alloy materials, it improves structural stability and fire resistance.
It effectively prevents the spread of smoke and fire in the event of a fire, improving the safety and service life of nuclear power plant fire doors.
Smart Images
Figure CN224260207U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, and in particular to a nuclear power plant fire door with a double-layer sealing structure. Background Technology
[0002] Nuclear power plants, as high-risk locations, have extremely stringent fire safety requirements. Especially in the event of a fire, fire doors must possess sufficient fire resistance and sealing properties to prevent the spread of fire and smoke into other areas. While traditional fire doors can block fire sources to some extent, their structural and sealing limitations prevent them from providing long-term effective protection during a fire. Furthermore, the dangers of smoke to personnel during a fire cannot be ignored. Effectively preventing the spread of smoke and ensuring personnel safety during a fire is also a crucial design objective for nuclear power plant fire doors. Existing fire doors typically use a single fire-resistant material or a simple sealing structure, which cannot provide sufficient sealing during a fire. Traditional fire doors cannot automatically adjust their sealing status according to changes in smoke concentration, resulting in unstable sealing performance and failing to meet high safety standards. In addition, many materials used in traditional fire doors are prone to aging under high temperatures, reducing their service life and fire resistance. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a nuclear power plant fire door with a double-layer sealing structure, aiming to improve the problem of the general protective performance of existing nuclear power plant fire doors.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a nuclear power plant fireproof door with a double-layer sealing structure, including a door frame, a connector fixedly connected to the right rear side of the door frame, a fireproof door panel rotatably connected to the door frame via the connector, a sealing strip fixedly connected to the rear side of the fireproof door panel, an installation groove provided in the middle of the outer side of the fireproof door panel, and a sealing component provided inside the installation groove for sealing.
[0005] As a further description of the above technical solution:
[0006] The sealing assembly includes an inflatable sealing ring, which is fixedly connected inside the mounting groove. An air inlet pipe is fixedly connected to the upper front side of the inflatable sealing ring, and a control valve is fixedly connected to the outside of the air inlet pipe.
[0007] As a further description of the above technical solution:
[0008] The installation door frame is made of stainless steel, the connectors are made of alloy steel, and the fireproof door panel is made of aluminum alloy composite material.
[0009] As a further description of the above technical solution:
[0010] The air intake pipe runs through the upper front side of the door frame.
[0011] As a further description of the above technical solution:
[0012] A smoke sensor is fixedly connected to the upper middle part of the rear side of the installation door frame, and the smoke sensor is electrically connected to the air intake pipe.
[0013] As a further description of the above technical solution:
[0014] The sealing strip is made of fiberglass.
[0015] As a further description of the above technical solution:
[0016] A handle is fixedly connected to the middle of the left side of the fireproof door panel, and a door lock is fixedly connected to the upper middle of the left side of the fireproof door panel.
[0017] This utility model has the following beneficial effects:
[0018] 1. In this utility model, after the control valve is opened, the inside of the inflatable sealing ring is evacuated to a vacuum, and the door gap is sealed by the sealing strip. When the smoke sensor detects that the smoke content in the air is higher than the preset value, the smoke sensor triggers the control valve to open. Under the action of vacuum, the external air is drawn into the inflatable sealing ring through the air inlet pipe, so that the inflatable sealing ring is inflated and completely fills the door gap. This realizes that the nuclear power fire door can significantly improve the protection performance through double sealing, and improves the safety of the nuclear power fire door.
[0019] 2. In this utility model, stainless steel is used to provide sufficient support and fire resistance for the installation door frame, alloy steel is used to ensure the corrosion resistance and mechanical strength of the connectors, and aluminum alloy composite material is used to ensure that the fireproof door panel can effectively block the spread of fire and has strong structural stability, thereby improving the service life of nuclear power fireproof doors. Attached Figure Description
[0020] Figure 1 This is a perspective view of a nuclear power plant fire door with a double-layer sealing structure proposed in this utility model;
[0021] Figure 2 This is a rear view of a nuclear power plant fire door with a double-layer sealing structure proposed in this utility model;
[0022] Figure 3 This is an exploded view of a nuclear power plant fire door with a double-layer sealing structure proposed in this utility model.
[0023] Legend:
[0024] 1. Door frame installation; 2. Connectors; 3. Fireproof door panel; 4. Handle; 5. Door lock; 6. Smoke detector; 7. Sealing strip; 8. Mounting groove; 9. Inflatable sealing ring; 10. Air inlet pipe; 11. Control valve. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 1-3 This utility model provides an embodiment of a nuclear power plant fireproof door with a double-layer sealing structure, including a door frame 1, a connector 2 fixedly connected to the right rear side of the door frame 1, a fireproof door panel 3 rotatably connected to the door frame 1 via the connector 2, a sealing strip 7 fixedly connected to the rear side of the fireproof door panel 3, an installation groove 8 opened in the middle of the outer side of the fireproof door panel 3, a handle 4 fixedly connected to the middle of the left side of the fireproof door panel 3, a door lock 5 fixedly connected to the upper middle of the left side of the fireproof door panel 3, a sealing component is provided inside the installation groove 8 for sealing, the sealing component includes an inflatable sealing ring 9, the inflatable sealing ring 9 is fixedly connected inside the installation groove 8, an air inlet pipe 10 is fixedly connected to the upper front side of the inflatable sealing ring 9, a control valve 11 is fixedly connected to the outer side of the air inlet pipe 10, the air inlet pipe 10 passes through the upper front side of the door frame 1, and a smoke sensor 6 is fixedly connected to the upper middle of the rear side of the door frame 1, the smoke sensor 6 is electrically connected to the air inlet pipe 10.
[0027] When installing nuclear power plant fire doors, the control valve 11 is first opened, and the air extraction device is used to evacuate the inside of the inflatable sealing ring 9 to a vacuum state. At the same time, the sealing strip 7 is used to effectively seal the door gaps. The smoke sensor 6 is set with a preset value. When the smoke sensor 6 detects that the smoke content in the air exceeds the preset value, the smoke sensor 6 immediately triggers the control system, opens the control valve 11 to create a vacuum state, and draws external air into the inflatable sealing ring 9 through the air inlet pipe 10. Under the action of the external air, the inflatable sealing ring 9 rapidly expands and fills the door gaps, thus forming a double-layer sealing structure. This effectively enhances the sealing performance of the fire door and significantly improves its fire resistance. In the event of a fire or smoke leak, the nuclear power plant fire door can better prevent the spread of fire and the leakage of harmful gases, greatly improving the safety and reliability of the nuclear power plant fire door.
[0028] Reference Figures 1-3 The door frame 1 is made of stainless steel, the connector 2 is made of alloy steel, the fireproof door panel 3 is made of aluminum alloy composite material, and the sealing strip 7 is made of fiberglass.
[0029] By using stainless steel to provide sufficient support and fire resistance for the door frame 1, the structural integrity of the door frame is ensured to be maintained in high-temperature environments. By using alloy steel to ensure the corrosion resistance and mechanical strength of the connectors 2, the durability and reliability of the overall device are enhanced. By using aluminum alloy composite materials, the fireproof door panel 3 can effectively block the spread of fire and has strong structural stability, ensuring the effective protection of facilities and personnel safety in the event of a fire. By using glass fiber to improve the high-temperature resistance of the sealing strip 7, it can maintain a sealing effect in the event of a fire, preventing smoke and flame penetration. This improves the overall protective performance and service life of the nuclear power plant fireproof door, enabling it to operate stably for a long time in high-risk environments such as nuclear power plants.
[0030] Working principle: When installing a nuclear power plant fire door, the control valve 11 is opened and the air extraction device draws the air inside the inflatable sealing ring 9 into a vacuum. The sealing strip 7 seals the door gap. Then, a preset value is set for the smoke sensor 6. When the smoke sensor 6 detects that the smoke content in the air is higher than the preset value, the smoke sensor 6 triggers the opening of the control valve 11. Under the action of vacuum, external air is drawn into the inflatable sealing ring 9 through the air inlet pipe 10, causing the inflatable sealing ring 9 to inflate and completely fill the door gap. In this way, the nuclear power plant fire door can significantly improve its protective performance through double sealing, thereby improving the safety of the nuclear power plant fire door.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A nuclear power plant fire door with a double-layer sealing structure, comprising a door frame (1), characterized in that: The mounting door frame (1) is fixedly connected to the right rear side with a connector (2). The mounting door frame (1) is rotatably connected to a fireproof door panel (3) through the connector (2). A sealing strip (7) is fixedly connected to the rear side of the fireproof door panel (3). An installation groove (8) is provided in the middle of the outer side of the fireproof door panel (3). A sealing component is provided inside the installation groove (8) for sealing.
2. A nuclear power plant fire door with a double-layer sealing structure according to claim 1, characterized in that: The sealing assembly includes an inflatable sealing ring (9), which is fixedly connected inside the mounting groove (8). An air inlet pipe (10) is fixedly connected to the upper front side of the inflatable sealing ring (9), and a control valve (11) is fixedly connected to the outside of the air inlet pipe (10).
3. A nuclear power plant fire door with a double-layer sealing structure according to claim 1, characterized in that: The installation door frame (1) is made of stainless steel, the connector (2) is made of alloy steel, and the fireproof door panel (3) is made of aluminum alloy composite material.
4. A nuclear power plant fire door with a double-layer sealing structure according to claim 2, characterized in that: The air intake pipe (10) passes through the upper front part of the mounting door frame (1).
5. A nuclear power plant fire door with a double-layer sealing structure according to claim 2, characterized in that: A smoke sensor (6) is fixedly connected to the upper middle part of the rear side of the installation door frame (1), and the smoke sensor (6) is electrically connected to the air inlet pipe (10).
6. A nuclear power plant fire door with a double-layer sealing structure according to claim 1, characterized in that: The sealing strip (7) is made of glass fiber.
7. A nuclear power plant fire door with a double-layer sealing structure according to claim 1, characterized in that: A handle (4) is fixedly connected to the middle left side of the fireproof door panel (3), and a door lock (5) is fixedly connected to the upper middle left side of the fireproof door panel (3).