Fire damper ring with alarm function

Abstract

The utility model discloses a fire -resistant ring with alarm function, including fire -resistant ring body, the fire -resistant ring body top inboard sets up connecting column no.

Description

Technical Field

[0001] This utility model relates to the field of fire-resistant fire collars, and in particular to a fire collar with an alarm function. Background Technology

[0002] Fire collars (also called fireproof collars) are made of metal with a flame-retardant expanding core material inside. They are fitted onto the outer wall of rigid polyvinyl chloride (PVC) pipes and fixed to the floor or wall. When a fire occurs, the core material expands rapidly due to heat, squeezing the UPVC pipe and sealing the pipe opening in a short time, preventing the fire from spreading along the opening. This product has the advantages of compact structure, beautiful appearance, organic combination of leak prevention and fire protection, and convenient construction and installation.

[0003] When the expanding fire-retardant material inside a fire collar (such as expanded graphite, vermiculite, or composite expanding agent) begins a significant physicochemical expansion reaction triggered by the high temperatures of a fire, this is actually an extremely critical and dangerous fire signal. This phenomenon clearly indicates that the fire has moved beyond its initial stage; not only has the temperature of the fire source risen sharply to a critical point (usually well above 300°C), but it also means that flames and highly toxic, high-temperature smoke are attempting to spread to adjacent floors or areas through pipes or openings, and the fire severity has escalated to a critical stage that threatens the structural stability of the building and the safety of people. However, current mainstream fire collars do not provide similar alarm devices. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a fire arrestor ring with alarm function.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a fire-arresting ring with an alarm function, comprising a fire-arresting ring body, a connecting post 1 disposed on the inner side of the upper part of the fire-arresting ring body, one end of the connecting post 1 penetrating through the fire-arresting ring body, and an alarm being disposed on the outer surface of the fire-arresting ring body, and a connecting post 2 disposed below the middle position of the connecting post 1, the connecting post 2 being hollow, and wiring disposed inside the connecting post 1 and the connecting post 2, with a pressure sensor disposed below the connecting post 2, the pressure sensor being electrically connected through the wiring inside the connecting post 1 and the connecting post 2.

[0006] As a preferred embodiment of this invention, the pressure sensor response threshold is 0.2 ± 0.02 MPa.

[0007] As a preferred embodiment of this invention, the alarm includes an NB-IoT wireless transmission module.

[0008] As a preferred embodiment of this invention, the pressure sensor has a response time of ≤100ms.

[0009] As a preferred embodiment of this utility model, the conductor is covered with a ceramicized silicone rubber sheath.

[0010] As a preferred technical solution of this utility model, the through-hole of the connecting column is filled with expanding fireproof sealant.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The alarm is triggered the moment the fire arrestor expands and starts, which is more than 30 seconds earlier than traditional smoke and heat detectors, thus upgrading the fire detection capabilities. 2. The hollow connecting column structure combines signal transmission and fireproof sealing, eliminating the need for additional wiring. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural detail of the present invention; In the diagram: 1. Fire arrestor ring body; 2. Connecting post one; 3. Connecting post two; 4. Alarm; 5. Pressure sensor; 6. Expanding fireproof sealant. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0014] In the attached diagram, all identical reference numerals refer to the same components.

[0015] like Figure 1-2 As shown, this utility model provides a flame arrestor ring with an alarm function, including a flame arrestor ring body 1. A second connecting post 3 is vertically fixed to the top of the inner cavity of the flame arrestor ring body 1, and its top extends horizontally to form a first connecting post 2 penetrating the side wall. A pressure sensor 5 is embedded at the bottom of the second connecting post 3, 3mm from the surface of the expansion core material. A wire passes through the inner cavity of the second connecting post 3 and the first connecting post 2 to an external alarm 4. The alarm 4 includes a red strobe light and a 95dB buzzer.

[0016] In this invention, the pressure sensor 5 is a thin-film piezoresistive sensor with an accuracy of ±1%.

[0017] In an optional embodiment, the through hole of connecting post 2 is filled with graphite-based expanding sealant. It should be noted that graphite-based expanding sealant expands more than three times its original size when exposed to fire, preventing smoke leakage. In an optional embodiment, the NB-IoT module built into the alarm 4 operates in the 850MHz frequency band. It should be noted that the module's operating frequency of 850MHz helps to enhance signal penetration within the building. In one optional embodiment, the protective cover is made of 304 stainless steel and has a thread depth of 5mm. It should be noted that the protective sensor surface is designed to automatically melt off in the event of a fire during the construction period. In an optional embodiment, the conductor (6) is covered with a ceramicized silicone rubber sheath (14) that can withstand 1100°C / 90 min. It should be noted that the integrity of the wiring in a fire environment must be ensured. In an optional embodiment, the penetration point of the connecting post 2 is filled with expanding fireproof sealant 6. It should be noted that the intumescent fireproof sealant 6 can effectively block the overflow channels of the graphene intumescent material in the fire arrestor ring during a fire.

[0018] The working principle of this utility model is as follows: When the expansion core material expands due to heat, generating a lateral pressure greater than 0.2 MPa, the pressure sensor 5 outputs an electrical signal. This signal is transmitted via a wire to the alarm 4, triggering the audible and visual module to emit a red flashing light and a buzzer alarm. Simultaneously, the wireless module sends a "FIRE-RING ACTIVATED" signal to the fire alarm control panel. The entire process is completed in the initial stage of expansion (temperature 300-400℃), buying crucial time for personnel evacuation.

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A flame arrestor with alarm function comprising a flame arrestor body (1), characterized in that, A connecting post 1 (2) is provided on the inner side of the upper part of the fire arresting ring body (1). One end of the connecting post 1 (2) passes through the fire arresting ring body (1), and an alarm (4) is provided on the outer surface of the fire arresting ring body (1). A connecting post 2 (3) is provided below the middle position of the connecting post 1. The connecting post 1 (2) and the connecting post 2 (3) are hollow. Wires are provided inside the connecting post 1 (2) and the connecting post 2 (3). A pressure sensor (5) is provided below the connecting post 2 (3). The pressure sensor (5) is electrically connected through the wires inside the connecting post 1 (2) and the connecting post 2 (3).

2. The fire damper with alarm function according to claim 1, characterized in that, The pressure sensor (5) has a response threshold of 0.2 ± 0.02 MPa.

3. The fire damper with alarm function according to claim 1, characterized in that, The alarm (4) includes an NB-IoT wireless transmission module.

4. The fire damper with alarm function according to claim 1, characterized in that, The pressure sensor (5) has a response time of ≤100ms.

5. The fire damper with alarm function according to claim 1, characterized in that, The conductor is covered with a ceramicized silicone rubber sheath.

6. The fire damper with alarm function according to claim 1, characterized in that, The penetration point of the connecting column (2) is filled with expanding fireproof sealant (6).

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