Fire-resistant device for air pipe

Abstract

The utility model discloses an air pipe fire-resistant device, which comprises a flame-retardant sponge I fixedly connected in an air pipe body and a flame-retardant sponge II sleeved on the outer wall of the air pipe body, the flame-retardant sponge I is fixedly connected with a flame-retardant sponge strip, one end of the flame-retardant sponge strip penetrates through the air pipe body and is fixedly connected with the flame-retardant sponge II, and the other end of the flame-retardant sponge strip is fixedly connected with the flame-retardant sponge II. The second flame-retardant sponge is wrapped with a fireproof shell, a plurality of spray heads are fixedly connected into the air pipe body, one end of each spray head is communicated with a conveying pipe, and the conveying pipe extends out of the fireproof shell.

Description

Technical Field

[0001] This utility model relates to the technical field of fire-resistant equipment for air ducts, and in particular to a fire-resistant device for air ducts. Background Technology

[0002] In the field of building fire protection engineering, ventilation ducts, as important channels for air transport, directly affect the efficiency of smoke control and personnel evacuation during a fire. Traditional fire protection solutions for ventilation ducts often use a single external fireproof board or sprayed fireproof coating, which has inherent defects such as delayed response and incomplete heat conduction blocking.

[0003] Current technologies for fire protection of air ducts face three main mechanical challenges: First, temperature differences between the inside and outside of the duct wall cause metal fatigue deformation, leading to structural cracks in the fireproof layer; second, it is difficult to achieve simultaneous flame retardancy inside and outside the duct in the early stages of a fire, allowing fire to easily spread through the duct wall interlayer; and third, passive fire protection devices lack an active fire suppression linkage mechanism. In particular, when ducts pass through fire compartments, existing technologies cannot meet the stringent requirements for fire resistance integrity stipulated in the "Technical Standard for Building Smoke Control and Exhaust Systems". Utility Model Content

[0004] The purpose of this invention is to provide a fire-resistant device for air ducts that can cool the air ducts.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a fire-resistant duct device, comprising:

[0006] Flame-retardant sponge 1 is fixedly connected inside the duct body and flame-retardant sponge 2 is sleeved on the outer wall of the duct body;

[0007] A flame-retardant sponge strip is fixedly connected to the flame-retardant sponge one, and one end of the flame-retardant sponge strip passes through the air duct body and is fixedly connected to the flame-retardant sponge two.

[0008] The flame-retardant sponge is wrapped with a fireproof shell, and a number of nozzles are fixedly connected inside the air duct body. One end of each nozzle is connected to a transmission pipe, which extends to the outside of the fireproof shell.

[0009] Preferably, a fire sensor is fixedly connected to the fireproof shell, and a control component is provided on the transmission pipe, which can control the opening and closing of the transmission pipe.

[0010] Preferably, the control component includes a solenoid valve fixedly connected to the transmission pipe and a control box with a PLC control panel, wherein the PLC control panel is electrically connected to the fire sensor and the solenoid valve.

[0011] Preferably, the fireproof shell includes a concave frame and a base plate that is oscillatingly connected to the concave frame, with one end of the base plate connected to the concave frame by a snap fastener.

[0012] Preferably, a support rod is welded and fixedly connected to the top surface of the concave frame.

[0013] Preferably, a hook is fixedly connected to the end of the support rod away from the concave frame.

[0014] Preferably, an alarm is fixedly connected to the fireproof housing, and the alarm is electrically connected to the PLC control panel.

[0015] The beneficial effects of this utility model compared with the prior art are as follows:

[0016] 1. A double-layer protection system is formed by rigidly fixing flame-retardant sponge one to the duct body and wrapping it with the outer wall of flame-retardant sponge two. Combined with flame-retardant sponge strips penetrating the duct wall, this creates a continuous flame-retardant medium, effectively eliminating stress concentration caused by temperature differences between the inside and outside of the metal duct wall. The snap-fit ​​connection design between the concave frame and the base plate allows the fireproof shell to maintain structural integrity during thermal expansion, avoiding the cracking risk of traditional welded structures.

[0017] 2. The suspension system consisting of support rods and hooks enables segmented installation of air ducts, reducing bending deformation of long-distance air ducts; the split design of the fireproof shell facilitates quick disassembly during maintenance via mechanical clips, avoiding the corrosion and failure problems of traditional bolted connections. Attached Figure Description

[0018] Figure 1 is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the position of the duct body in this utility model.

[0020] Attached reference numerals: 1. Flame-retardant sponge one; 2. Flame-retardant sponge two; 3. Flame-retardant sponge strip; 4. Fireproof shell;

[0021] 5. Sprinkler head; 6. Transmission pipe; 7. Fire sensor; 8. Control components; 9. Solenoid valve; 10. Control box;

[0022] 11. Support rod; 12. Hook; 13. Alarm; 14. Duct body; 15. Concave frame; 16. Base plate. Detailed Implementation

[0023] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0024] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0025] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0026] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., are used interchangeably.

[0027] The term should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components. Unless otherwise explicitly defined, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] As shown in Figures 1 and 2, a fire-resistant duct device includes: a flame-retardant sponge 1 fixedly connected inside the duct body 14 and a flame-retardant sponge 2 sleeved on the outer wall of the duct body 14. A flame-retardant sponge strip 3 is fixedly connected to the flame-retardant sponge 1, with one end of the strip penetrating the duct body 14 and fixedly connected to the sponge 2. A fireproof shell 4 is wrapped around the sponge 2. Several nozzles 5 are fixedly connected inside the duct body 14, with one end of each nozzle communicating with a transmission pipe 6. The transmission pipe 6 extends to the outside of the fireproof shell 4. Therefore, in the event of a fire, water is transmitted through the transmission pipe 6 into the nozzles 5, and then into the flame-retardant sponge 1. After the flame-retardant sponge 1 is saturated with water, the water is transmitted through the flame-retardant sponge strip 3 into the sponge 2, thereby cooling the duct body 14 and the fireproof shell 4.

[0029] Specifically, a fire sensor 7 is fixedly connected to the fireproof shell, and a control component 8 is installed on the transmission pipe 6. The control component 8 can control the opening and closing of the transmission pipe 6. The control component 8 includes a solenoid valve 9 fixedly connected to the transmission pipe 6 and a control box 10 with a PLC control panel. The PLC control panel is electrically connected to the fire sensor 7 and the solenoid valve 9. Therefore, after the fire sensor 7 detects a fire, it transmits a signal to the PLC control panel, which controls the solenoid valve 9 to open, thereby enabling the transmission pipe 6 to transmit external water into the sprinkler head 5 to deliver water to the flame-retardant sponge 1.

[0030] Specifically, the fireproof shell 4 includes a concave frame 15 and a base plate 16 that is swayed and connected to the concave frame 15. One end of the base plate 16 is connected to the concave frame 15 by a snap fastener. A support rod 11 is welded and fixedly connected to the top surface of the concave frame 15. A hook 12 is fixedly connected to the end of the support rod 11 away from the concave frame 15. The hook 12 on the support rod 11 is used to suspend the concave frame 15 to the outside. Opening the base plate 16 makes it convenient for personnel to open the concave frame 15 to maintain the flame-retardant sponge 2.

[0031] Specifically, an alarm 13 is fixedly connected to the fireproof enclosure 4. This alarm 13 is used to alert personnel of a fire.

[0032] In case of fire, the alarm 13 is electrically connected to the PLC control panel. When the PLC control panel receives a signal from the fire sensor 7, it will transmit a signal to the alarm 13, causing the alarm 13 to sound an alarm.

[0033] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A fire-resistant duct device, characterized in that, include: The flame-retardant sponge 1 (1) is fixedly connected inside the duct body (14) and sleeved on the duct body. Flame-retardant sponge 2 (2) on the outer wall of body (14); A flame-retardant sponge strip (3) is fixedly connected to the flame-retardant sponge (1). (3) One end passes through the air duct body (14) and is fixedly connected to the flame-retardant sponge (2); The flame-retardant sponge 2 (2) is wrapped with a fireproof shell (4), and the duct body (14) is internally solidified. A plurality of nozzles (5) are fixedly connected, one end of which is connected to a transmission pipe (6). Extends to the outside of the fireproof shell (4).

2. The fire-resistant duct device according to claim 1, characterized in that, The A fire sensor (7) is fixedly connected to the fireproof housing (4), and a control component is provided on the transmission pipe (6). (8) The control element (8) can control the opening and closing of the transmission tube (6).

3. The fire-resistant duct device according to claim 2, characterized in that, The The control unit (8) includes a solenoid valve (9) fixedly connected to the transmission pipe (6) and a PLC-controlled... The control box (10) of the panel, wherein the PLC control panel is electrically connected to the fire sensor (7), The PLC control panel is electrically connected to the solenoid valve (9).

4. The fire-resistant duct device according to claim 2, characterized in that, The The fireproof enclosure (4) includes a concave frame (15) and a base plate that is oscillatingly connected to the concave frame (15). (16) One end of the base plate (16) is connected to the concave frame (15) by a snap fastener.

5. A fire-resistant duct device according to claim 4, characterized in that, The The top surface of the concave frame (15) is welded and fixedly connected to a support rod (11).

6. A fire-resistant duct device according to claim 5, characterized in that, The A hook (12) is fixedly connected to the end of the support rod (11) away from the concave frame (15).

7. A fire-resistant duct device according to claim 2, characterized in that, The An alarm (13) is fixedly connected to the fireproof shell (4).

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