Potassium ion aerosol fire extinguishing device

Abstract

The utility model discloses a kind of potassium ion aerosol fire extinguishing devices, belong to fire extinguishing technical field, including shell, lower cover, spraying mechanism and sensing mechanism, spraying mechanism includes fire extinguishing core inserted in aluminium center tube and coaxial sleeve set in aluminium center tube outside heat insulation sleeve pipe, sensing mechanism includes the electric control system formed by smoke sensing module, still include physical trigger thermosensitive wire, thermosensitive wire passes through heat insulation sleeve pipe and aluminium center tube on ventilation hole in sequence and connect to fire extinguishing core, when extinguishing, the eruption path of high-temperature aerosol is limited to sequentially pass through annular sealing cavity formed between aluminium center tube and heat insulation sleeve pipe, shell inner cavity, and finally flow through cooling ball filled in lower cover spray hole and spray out after.The utility model passes through the dual redundancy trigger structure of electric control and physical temperature control, solve the problem that existing device cannot be started due to single trigger mode failure, significantly improve the starting reliability.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing technology, and in particular to a potassium ion aerosol fire extinguishing device. Background Technology

[0002] Potassium ion aerosol fire extinguishing technology, as a highly efficient and clean fire protection technology, has been widely used in key protected areas such as communication equipment rooms, power distribution cabinets, and archives. This type of fire extinguishing device usually generates a large amount of potassium ion aerosol with fire extinguishing efficacy through a chemical reaction of the internal fire extinguishing agent, which quickly extinguishes the fire source through chemical inhibition and physical asphyxiation.

[0003] In practical applications, these aerosol fire extinguishing devices are mostly automatic fire extinguishing systems. Their activation depends on fire detection components. Existing devices generally use electronic sensing, which detects fire signals through smoke or temperature sensors. The electronic control module then processes the signals and issues an activation command to ignite the fire extinguishing core.

[0004] However, this single triggering mechanism that relies entirely on electronic systems has obvious reliability risks. The operation of the electronic sensing system depends on the normal operation of the sensor, control circuit and battery power components. During long standby, if the electronic components age and fail, the circuit malfunctions, or the battery is depleted, the entire fire extinguishing device will not be able to be activated when a fire occurs, thus losing its due protective function and causing serious property damage.

[0005] Therefore, this utility model proposes a potassium ion aerosol fire extinguishing device to overcome the shortcomings of the prior art. Summary of the Invention

[0006] In view of the problems of existing potassium ion aerosol fire extinguishing devices, such as a single triggering mechanism, low reliability, and inability to start when the electronic system fails, this utility model aims to provide a potassium ion aerosol fire extinguishing device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a potassium ion aerosol fire extinguishing device, including: a shell, a lower cover plate, a spray mechanism housed in the shell, and a sensing mechanism.

[0008] The spray mechanism consists of a fire extinguishing core, an aluminum central tube, and a heat insulation sleeve. The aluminum central tube is coaxially spaced inside the heat insulation sleeve, and the fire extinguishing core is inserted inside the aluminum central tube. Ventilation holes one and two are respectively opened on the tube walls of the aluminum central tube and the heat insulation sleeve. The spray holes opened on the lower cover plate are filled with cooling balls.

[0009] Furthermore, the core innovation of the sensing mechanism lies in the inclusion of a specially designed thermal wire that passes through ventilation hole two on the heat insulation sleeve and ventilation hole one on the aluminum central tube, and finally connects to the fire extinguishing core. This structural layout integrates the physical temperature control triggering mechanism with the aerosol spray cooling channel, ensuring that under any circumstances, as long as the triggering temperature is reached, the fire extinguishing core can be ignited by a purely physical means, forming a reliable triggering guarantee that does not rely on electronic systems.

[0010] Preferably, the fire extinguishing core is provided with a drilled blind hole, and the end of the heat-sensitive wire is connected to the drilled blind hole to achieve precise ignition. In addition, a rubber ring is also provided on the heat-sensitive wire to seal the gap between the heat-sensitive wire passing through the ventilation hole one and the ventilation hole two, so as to prevent external moisture from entering and affecting reliability.

[0011] Preferably, both ends of the heat insulation sleeve are sealed and fixed by plugs, thereby forming a complete annular sealed cavity between the heat insulation sleeve and the aluminum central tube for the detour cooling of the gas mist, forcing the high-temperature gas mist to flow through a longer detour path for sufficient initial cooling.

[0012] Preferably, the sensing mechanism further includes a complete electronic sensing component, which includes a smoke sensing module, a battery for power supply, and a sensor that passes through the lower cover plate. The battery is located on one side of the smoke sensing module and is electrically connected, while the sensor is signal-connected to the smoke sensing module.

[0013] Preferably, the smoke sensing module is also electrically connected to the fire extinguishing core. After receiving an abnormal signal from the sensor, it can electrically trigger the fire extinguishing core to work. This electronic triggering structure coexists with the aforementioned thermal wire physical triggering structure, together forming a redundant triggering system with double insurance, which greatly improves the starting reliability of the device under various complex conditions.

[0014] Preferably, the device further includes a top cover and multiple connectors. The top cover is fixedly connected to the top of the housing, and the connectors are fixed to the top cover for securely installing the entire fire extinguishing device in the location requiring protection.

[0015] Preferably, as a further optimization of the installation structure, a silicone pad is provided at the connection between the upper cover plate and the outer shell. The silicone pad forms a buffer seal between the two, which can absorb the vibration transmitted from the mounting surface and enhance the overall sealing performance of the device.

[0016] Preferably, as a specific structural implementation, both the aluminum central tube and the heat insulation sleeve are cylindrical sleeves, with the aluminum central tube coaxially inserted into the heat insulation sleeve. Ventilation hole one and ventilation hole two are holes that penetrate radially through their respective tube bodies. This standardized structure facilitates processing and assembly and can form a uniform annular cooling channel.

[0017] This utility model has the following beneficial effects: 1. This utility model establishes a dual triggering structure by setting up a sensing mechanism and a thermal wire. The sensing mechanism achieves electronic triggering through a sensor, a smoke sensing module, and a battery, while the thermal wire connects to the fire extinguishing core through a specific path to achieve temperature-controlled physical triggering. This solves the problem that existing fire extinguishing devices have a single triggering method and may fail to start due to electronic failure or sensing limitations. The electronic control and temperature control are redundant and complementary, greatly improving the reliability of starting.

[0018] 2. This utility model constructs a multi-stage cooling channel, allowing the high-temperature mist generated by the fire extinguishing core to flow sequentially through the annular sealed cavity formed by the aluminum central tube and the heat insulation sleeve for path cooling. Finally, it undergoes physical cooling when passing through the cooling ball in the spray hole of the lower cover plate. This solves the safety hazards of excessively high mist temperature and the risk of secondary fire or thermal damage caused by direct spraying in the prior art, achieving safe cooling and efficient fire extinguishing.

[0019] 3. This utility model solves the problems of key components failing due to external moisture erosion and insufficient sealing of the device in the prior art by sealing the holes through the thermal wire with a rubber ring and by setting a silicone pad at the connection between the upper cover plate and the outer shell. It protects internal components, prevents moisture and dust, and improves the environmental tolerance and service life of the device. Attached Figure Description

[0020] Figure 1 This is a perspective view of the potassium ion aerosol fire extinguishing device proposed in this utility model; Figure 2 This is a bottom view of the potassium ion aerosol fire extinguishing device proposed in this utility model; Figure 3 This is a schematic diagram of the potassium ion aerosol fire extinguishing device proposed in this utility model without the top cover plate. Figure 4 This is a schematic diagram of the spray mechanism of the potassium ion aerosol fire extinguishing device proposed in this utility model; Figure 5 This is a cross-sectional view of the heat insulation sleeve of the potassium ion aerosol fire extinguishing device proposed in this utility model.

[0021] Legend: 1. Outer shell; 2. Spray mechanism; 201. Heat insulation sleeve; 202. Aluminum central tube; 203. Fire extinguishing core; 204. Ventilation hole one; 205. Ventilation hole two; 206. Cooling ball; 207. Spray hole; 208. Plug; 209. Drill blind hole; 3. Sensing mechanism; 301. Smoke detection module; 302. Battery; 303. Sensor; 304. Rubber ring; 305. Thermal wire; 4. Top cover plate; 5. Bottom cover plate; 6. Silicone pad; 7. Connector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Example

[0023] Please refer to Figures 1 to 5 This utility model provides a potassium ion aerosol fire extinguishing device, which aims to solve the problems of insufficient reliability of the triggering mechanism in the existing potassium ion aerosol fire extinguishing devices. The devices may fail to start due to the failure of a single sensing method. At the same time, the fire extinguishing aerosol is generated at an extremely high temperature. If it is not cooled sufficiently, direct spraying will cause secondary thermal damage or safety hazards to the surrounding environment.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a potassium ion aerosol fire extinguishing device includes a housing 1, an upper cover plate 4 fixedly connected to the top of the housing 1, and a lower cover plate 5 fixedly connected to the bottom of the housing 1. The housing 1, the upper cover plate 4, and the lower cover plate 5 together enclose a receiving space. A connector 7 is fixed on the upper cover plate 4 for fixing the entire device. A silicone pad 6 is also provided at the connection between the upper cover plate 4 and the housing 1 for forming a buffer seal between the two. Multiple spray holes 207 are provided on the lower cover plate 5. The spray mechanism 2 and the sensing mechanism 3 are both located in the receiving space inside the housing 1.

[0025] like Figure 3 , Figure 4 and Figure 5As shown, the spray mechanism 2 is housed within the outer casing 1. The spray mechanism 2 includes a fire extinguishing core 203, an aluminum central tube 202, a heat insulation sleeve 201, and a sealing plug 208. Both the aluminum central tube 202 and the heat insulation sleeve 201 are cylindrical sleeves. The fire extinguishing core 203 is inserted into the internal cavity of the aluminum central tube 202. The aluminum central tube 202 is coaxially inserted into the heat insulation sleeve 201, and the outer wall of the aluminum central tube 202 and the inner wall of the heat insulation sleeve 201 are coaxially spaced. The openings at both ends of the heat insulation sleeve 201 are sealed and fixed by the plug 208, thereby extinguishing the fire in the aluminum central tube 203. An annular sealed cavity for aerosol cooling is formed between the core tube 202 and the heat insulation sleeve 201. A ventilation hole 204 is provided on the tube wall of the aluminum core tube 202 along the radial direction of its respective tube body. The ventilation hole 204 connects the interior of the aluminum core tube 202 with the annular sealed cavity for aerosol cooling. A ventilation hole 205 is provided on the tube wall of the heat insulation sleeve 201 along the radial direction of its respective tube body. The ventilation hole 205 connects the annular sealed cavity for aerosol cooling with the inner cavity of the outer shell 1. The spray hole 207 located in the lower cover plate 5 is filled with a cooling ball 206.

[0026] The sensing mechanism 3 is located inside the housing 1 and is used to trigger the operation of the spraying mechanism 2, such as... Figure 3 and Figure 4 As shown, the sensing mechanism 3 includes a thermal wire 305. A blind hole 209 is provided on the fire extinguishing core 203. The trigger end of the thermal wire 305 is connected to the blind hole 209. The main body of the thermal wire 305 is laid along a specific path. The path passes through the ventilation hole 204 on the aluminum central tube 202, then through the ventilation hole 205 on the heat insulation sleeve 201, and extends to the inner cavity of the outer shell 1. A rubber ring 304 is fitted on the thermal wire 305. The rubber ring 304 is used to seal the gap between the thermal wire 305 passing through the ventilation hole 204 and the ventilation hole 205 to prevent moisture intrusion.

[0027] Please refer to Figure 3 The sensing mechanism 3 also includes a smoke sensing module 301, a battery 302, and a sensor 303. The battery 302 is disposed on one side of the smoke sensing module 301 and electrically connected to the smoke sensing module 301 to provide power. The sensor 303 is disposed through the lower cover plate 5 and is signal-connected to the smoke sensing module 301. The smoke sensing module 301 is also electrically connected to the fire extinguishing core 203, which is used to electrically trigger the fire extinguishing core 203 to work after receiving an abnormal signal from the sensor 303. This electronic triggering structure and the aforementioned physical triggering structure of the thermal wire 305 constitute a parallel redundant triggering. When the extinguishing core 203 is triggered in any way, the generated extinguishing mist will first be sprayed out from the ventilation hole 204 on the aluminum central tube 202, and enter the annular sealed cavity formed by the heat insulation sleeve 201 and the aluminum central tube 202 at intervals on the same axis for the mist to detour and cool. After the mist flows in the annular sealed cavity, it passes through the ventilation hole 205 on the heat insulation sleeve 201 and enters the inner cavity of the outer shell 1. The mist in the inner cavity of the outer shell 1 finally flows to and passes through the cooling ball 206 filled in the spray hole 207 of the lower cover plate 5. After the mist flows through the gap of the cooling ball 206, it is sprayed out from the spray hole 207.

[0028] In a preferred embodiment, in order to achieve reliable triggering and sealing of the thermal wire 305, a blind hole 209 is provided on the fire extinguishing core 203, the end of the thermal wire 305 is connected to the blind hole 209, and a rubber ring 304 is sleeved on the thermal wire 305. The rubber ring 304 is used to seal the gap between the thermal wire 305 passing through the ventilation hole 1 204 and the ventilation hole 205.

[0029] In a preferred embodiment, in order to construct a closed aerosol cooling channel, both ends of the heat insulation sleeve 201 are sealed and fixed by plugs 208, which can form an annular sealed cavity for aerosol detour cooling between the heat insulation sleeve 201 and the aluminum central tube 202.

[0030] As another preferred embodiment, in order to provide redundant electronic triggering, the sensing mechanism 3 also includes a smoke sensing module 301, a battery 302 and a sensor 303. The battery 302 is disposed on one side of the smoke sensing module 301 and electrically connected to the smoke sensing module 301 to provide power. The sensor 303 is disposed through the lower cover plate 5 and is signal-connected to the smoke sensing module 301. The smoke sensing module 301 is also electrically connected to the fire extinguishing core 203, which is used to electrically trigger the fire extinguishing core 203 to work after receiving an abnormal signal from the sensor 303.

[0031] In a preferred embodiment, to facilitate the installation and fixing of the device, the device also includes an upper cover plate 4, which is fixedly connected to the top of the outer casing 1. A connector 7 is fixed on the upper cover plate 4, which is used to fix the outer casing 1 in place.

[0032] As a further preferred embodiment of the above-mentioned installation structure, a silicone pad 6 is also provided at the connection between the upper cover plate 4 and the outer shell 1. The silicone pad 6 is used to form a buffer seal between the two.

[0033] As a further optimization of the cooling structure, both the aluminum central tube 202 and the heat insulation sleeve 201 are cylindrical sleeves. The aluminum central tube 202 is coaxially inserted into the heat insulation sleeve 201, and the ventilation hole 1 204 and the ventilation hole 205 are both opened through the radial direction of their respective tubes.

[0034] Working principle: The potassium ion aerosol fire extinguishing device provides two triggering methods to form a redundant triggering structure to ensure the reliability of start-up. The first is electronic triggering. When a fire occurs, the sensor 303 installed in the lower cover plate 5 detects the smoke signal and transmits the signal to the smoke sensing module 301. The smoke sensing module 301, which is powered by the battery 302 located on one side of the smoke sensing module 301, electrically triggers the fire extinguishing core 203 to work after receiving the signal. The second is physical triggering. When the ambient temperature rises abnormally, the thermal wire 305 connected to the blind hole 209 drilled on the fire extinguishing core 203 is ignited or melted. Since the path of the thermal wire 305 passes through the second ventilation hole 205 and the first ventilation hole 204 in sequence, the thermal wire 305 will directly ignite the fire extinguishing core 203. The rubber ring 304 sleeved on the thermal wire 305 forms a seal at the gap where the thermal wire 305 passes through the first ventilation hole 204 and the second ventilation hole 205. When the extinguishing core 203 is triggered in any way, it is inserted into the aluminum central tube 202 and quickly generates high-temperature extinguishing mist. The high-temperature mist first sprays out from the ventilation hole 204 on the aluminum central tube 202 and enters the annular sealed cavity formed by the aluminum central tube 202 and the heat insulation sleeve 201, which are coaxially spaced and sealed at both ends by plugs 208. The mist undergoes a detour within this cavity to achieve the first stage of cooling. Subsequently, the cooled mist passes through the ventilation hole 2 on the heat insulation sleeve 201. 205 enters the inner cavity of the outer shell 1. After the mist gathers in the inner cavity of the outer shell 1, it finally flows to the lower cover plate 5 fixedly connected to the bottom of the outer shell 1 and passes through the spray hole 207 filled with cooling ball 206. The mist is forced to be physically cooled when it flows through the cooling ball 206, achieving the second stage of cooling. Finally, it is safely sprayed out from the spray hole 207 to extinguish the fire source. The entire device is fixedly installed by the upper cover plate 4 fixedly connected to the top of the outer shell 1 and the connector 7 on it. The silicone gasket 6 between the upper cover plate 4 and the outer shell 1 provides a buffer seal.

Claims

1. A potassium ion aerosol fire extinguishing device, comprising: The outer shell (1), the lower cover plate (5), the spray mechanism (2) and the sensing mechanism (3) are fixedly connected to the bottom of the outer shell (1). The lower cover plate (5) has a spray hole (207). The spray mechanism (2) is housed inside the outer shell (1). The sensing mechanism (3) is located inside the outer shell (1) and is used to trigger the spray mechanism (2) to work. The spraying mechanism (2) is characterized in that it includes: a fire extinguishing core (203), an aluminum central tube (202), and a heat insulation sleeve (201). The fire extinguishing core (203) is used to generate fire extinguishing mist. The fire extinguishing core (203) is inserted into the aluminum central tube (202). The aluminum central tube (202) is provided with a first ventilation hole (204). The aluminum central tube (202) is coaxially spaced inside the heat insulation sleeve (201). The heat insulation sleeve (201) is provided with a second ventilation hole (205). The spraying hole (207) is filled with a cooling ball (206). The sensing mechanism (3) includes a thermal wire (305). The path of the thermal wire (305) passes through the second ventilation hole (205) and the first ventilation hole (204) in sequence and is connected to the fire extinguishing core (203).

2. The potassium ion aerosol fire extinguishing device according to claim 1, characterized in that, The fire extinguishing core (203) is provided with a blind hole (209), the end of the thermal wire (305) is connected to the blind hole (209), and a rubber ring (304) is sleeved on the thermal wire (305). The rubber ring (304) is used to seal the gap between the thermal wire (305) passing through the ventilation hole one (204) and the ventilation hole two (205).

3. The potassium ion aerosol fire extinguishing device according to claim 1, characterized in that, The two ends of the heat insulation sleeve (201) are sealed and fixed by plugs (208), which can form an annular sealed cavity for cooling of the gas mist between the heat insulation sleeve (201) and the aluminum central tube (202).

4. A potassium ion aerosol fire extinguishing device according to claim 1, characterized in that, The sensing mechanism (3) further includes: a smoke sensing module (301), a battery (302) and a sensor (303). The battery (302) is disposed on one side of the smoke sensing module (301) and electrically connected to the smoke sensing module (301) to provide power. The sensor (303) is disposed on the lower cover plate (5) and signal connected to the smoke sensing module (301).

5. A potassium ion aerosol fire extinguishing device according to claim 4, characterized in that, The smoke sensing module (301) is also electrically connected to the fire extinguishing core (203) and is used to electrically trigger the fire extinguishing core (203) to work after receiving an abnormal signal from the sensor (303), thereby forming a redundant triggering structure with the thermal wire (305).

6. A potassium ion aerosol fire extinguishing device according to claim 1, characterized in that, The device also includes an upper cover plate (4), which is fixedly connected to the top of the outer shell (1). A connector (7) is fixed on the upper cover plate (4) for fixing the outer shell (1).

7. A potassium ion aerosol fire extinguishing device according to claim 1, characterized in that, Both the aluminum central tube (202) and the heat insulation sleeve (201) are cylindrical sleeves. The aluminum central tube (202) is coaxially inserted into the heat insulation sleeve (201). The ventilation hole one (204) and ventilation hole two (205) are both opened through the radial direction of their respective tubes.

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