Fire extinguishing device

Abstract

This utility model discloses a fire extinguishing device, including a fire extinguishing agent storage tank, a connecting valve, and a glass bulb temperature sensing unit. The fire extinguishing agent storage tank has a liquid storage chamber inside, storing fire extinguishing agent and pressurized gas. The fire extinguishing agent storage tank also has an outlet connecting to the liquid storage chamber. The connecting valve is detachably installed at the outlet and has an outlet channel. Multiple multi-hole nozzles are located on the side of the connecting valve, and these nozzles are connected to the outlet through the outlet channel. A movable sealing element is provided between the multi-hole nozzles and the outlet channel. The glass bulb temperature sensing unit is installed on top of the connecting valve and limits the sealing element to maintain its sealing state. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit, the unit breaks, and the sealing element, driven by the pressurized gas, changes from a sealing state to a releasing state, allowing the multi-hole nozzles to connect to the outlet through the outlet channel. This utility model's technical solution can improve the reliability of the fire extinguishing device.

Description

Technical Field

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

[0002] Existing small fire extinguishing devices installed in electrical cabinets typically use electronic sensors. When these sensors detect abnormal temperatures or smoke within the cabinet, they transmit the signal to the control unit. Upon receiving the signal, the control unit activates the fire extinguishing device to extinguish the fire in the electrical components of the cabinet. However, these small fire extinguishing devices are highly dependent on external factors; smoke and heat detectors are susceptible to electromagnetic interference or dust, resulting in a high false alarm rate and insufficient reliability. Utility Model Content

[0003] The main purpose of this invention is to provide a fire extinguishing device that aims to improve the reliability of the fire extinguishing device.

[0004] To achieve the above objectives, the fire extinguishing device proposed in this utility model includes:

[0005] The fire extinguishing agent storage tank has an internal liquid storage chamber, which stores fire extinguishing agent and pressurized gas to provide power. The fire extinguishing agent storage tank is also provided with a liquid outlet that connects to the liquid storage chamber.

[0006] A connecting valve is detachably installed at the liquid outlet. The connecting valve has a liquid outlet channel. Multiple multi-hole nozzles are located on the side of the connecting valve. These multi-hole nozzles are connected to the liquid outlet through the liquid outlet channel. A movable sealing element is provided between the multi-hole nozzles and the liquid outlet channel. The sealing element has a sealing state and a releasing state. When the sealing element is in the sealing state, it blocks the connection between the liquid outlet channel and the multi-hole nozzles. When the sealing element is in the releasing state, it avoids the connection path between the liquid outlet channel and the multi-hole nozzles.

[0007] A glass bulb temperature sensing unit is installed on top of the connecting valve and limits the sealing element to maintain its sealing state. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit, the glass bulb temperature sensing unit breaks, and the sealing element changes from the sealing state to the releasing state under the drive of the pressurized gas, allowing the multi-hole nozzle to connect with the liquid outlet through the liquid outlet channel.

[0008] Optionally, the connecting valve is equipped with a pressure monitoring gauge for detecting the pressure of the liquid outlet channel.

[0009] Optionally, the connecting valve is threadedly connected to the liquid outlet.

[0010] Optionally, the sealing element is a preloaded spring.

[0011] Optionally, the fire extinguishing device further includes an installation component, the glass bulb temperature sensing unit is installed on the installation component, the installation component is detachably installed on the connecting valve, and the glass bulb temperature sensing unit limits the blocking component.

[0012] Optionally, the pressurized gas is nitrogen.

[0013] Optionally, the extinguishing agent is liquid perfluorohexanone.

[0014] Optionally, the number of the multi-hole nozzles is at least three, and the multiple multi-hole nozzles are evenly arranged.

[0015] Optionally, the extinguishing agent storage tank has a cylindrical structure.

[0016] Optionally, the extinguishing agent storage tank and the connecting valve are made of high-strength heat-resistant metal.

[0017] This utility model's technical solution involves forming a liquid storage chamber inside a fire extinguishing agent storage tank, storing the fire extinguishing agent and pressurized gas for propulsion within the chamber, and providing an outlet connecting the fire extinguishing agent storage tank to the liquid storage chamber. A connecting valve is detachably installed at the outlet, and the connecting valve has an outlet channel. Multiple multi-hole nozzles are located on the side of the connecting valve and connect to the outlet through the outlet channel. A movable sealing element is installed between the multi-hole nozzles and the outlet channel, and this sealing element has a sealing state and a releasing state. In the sealing state, the sealing element blocks the connection between the outlet channel and the multi-hole nozzles. The top of the connecting valve... The unit is equipped with a glass bulb temperature sensing unit. When the ambient temperature does not exceed the critical temperature of the glass bulb temperature sensing unit, the glass bulb temperature sensing unit limits the sealing component, keeping the sealing component in a sealed state. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit, the glass bulb temperature sensing unit breaks, releasing the limit on the sealing component. Driven by pressurized gas, the sealing component moves from the sealed state to the released state. In this way, the sealing component avoids the connection path between the liquid outlet channel and the multi-hole nozzle, allowing the extinguishing agent to be released from the multi-hole nozzle through the liquid outlet and liquid outlet channel under the action of pressurized gas, thereby extinguishing the fire.

[0018] Thus, the fire extinguishing device proposed in this utility model is entirely composed of mechanical structures, avoiding the need for electronic detection systems. This makes the fire extinguishing device less susceptible to interference and simple to maintain. Moreover, after each use, the connecting valve can be removed from the liquid outlet, and after filling the liquid storage chamber with new extinguishing agent and pressurized gas, a connecting valve with a new glass bulb temperature sensing unit can be installed, allowing for reuse. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the fire extinguishing device of this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the central connecting valve;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the sealing component moving from the sealing state to the release state.

[0023] Explanation of icon numbers:

[0024] 10. Extinguishing agent storage tank; 11. Extinguishing agent; 12. Pressurized gas; 20. Connecting valve; 21. Multi-hole nozzle; 22. Sealing component; 23. Liquid outlet channel; 24. Pressure monitoring gauge; 30. Glass bulb temperature sensing unit; 40. Mounting component;

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model proposes a fire extinguishing device.

[0030] In the embodiments of this utility model, such as Figures 1 to 3 As shown, the fire extinguishing device includes:

[0031] The fire extinguishing agent storage tank 10 has an internal liquid storage chamber, which stores the fire extinguishing agent 11 and the pressurized gas 12 that provides power. The fire extinguishing agent storage tank 10 is also provided with a liquid outlet that connects to the liquid storage chamber.

[0032] A connecting valve 20 is detachably installed at the liquid outlet. The connecting valve 20 has a liquid outlet channel 23. Multiple multi-hole nozzles 21 are located on the side of the connecting valve. These nozzles are connected to the liquid outlet through the liquid outlet channel 23. A movable sealing element 22 is provided between the multi-hole nozzles 21 and the liquid outlet channel 23. The sealing element 22 has a sealing state and a releasing state. When the sealing element 22 is in the sealing state, it blocks the connection between the liquid outlet channel 23 and the multi-hole nozzles 21. When the sealing element 22 is in the releasing state, it avoids the connection path between the liquid outlet channel 23 and the multi-hole nozzles 21.

[0033] The glass bulb temperature sensing unit 30 is installed on top of the connecting valve 20 and limits the sealing member 22 to maintain the sealing state of the sealing member 22. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit 30, the glass bulb temperature sensing unit 30 breaks, and the sealing member 22 changes from the sealing state to the releasing state under the drive of the pressurized gas 12, so that the multi-hole nozzle 21 is connected to the liquid outlet through the liquid outlet channel 23.

[0034] Specifically, in some embodiments, the fire extinguishing device proposed in this utility model is made smaller in size to facilitate installation in small spaces such as electrical distribution boxes and precision instrument cabinets. When in use, the fire extinguisher tank is installed upside down, so that the pressurized gas 12 is above the extinguishing agent 11 and separated from the connecting valve 20, so that the pressurized gas 12 can squeeze the extinguishing agent 11 out of the liquid outlet.

[0035] This utility model's technical solution involves forming a liquid storage chamber inside a fire extinguishing agent storage tank 10, storing fire extinguishing agent 11 and pressurized gas 12 for power supply within the liquid storage chamber, and providing an outlet in the fire extinguishing agent storage tank 10 to connect to the liquid storage chamber. A connecting valve 20 is detachably installed at the outlet. The connecting valve 20 has an outlet channel 23, and multiple perforated nozzles 21 are located on the side of the connecting valve 20, connecting to the outlet through the outlet channel 23. A movable sealing element 22 is provided between the perforated nozzles 21 and the outlet channel 23. The sealing element 22 has a sealing state and a releasing state. In the sealing state, the sealing element 22 blocks the connection between the outlet channel 23 and the perforated nozzles 21. A glass bulb temperature sensing unit 30 is installed on top. When the ambient temperature does not exceed the critical temperature of the glass bulb temperature sensing unit 30, the glass bulb temperature sensing unit 30 limits the sealing component 22, keeping the sealing component 22 in a sealed state. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit 30, the glass bulb temperature sensing unit 30 breaks, releasing the limit on the sealing component 22. Driven by the pressurized gas 12, the sealing component 22 moves from the sealed state to the released state. In this way, the sealing component 22 avoids the communication path between the liquid outlet channel 23 and the multi-hole nozzle 21, so that the extinguishing agent 11 is released from the multi-hole nozzle 21 through the liquid outlet and the liquid outlet channel 23 under the action of the pressurized gas 12, thereby extinguishing the fire.

[0036] Thus, the fire extinguishing device proposed in this utility model is entirely composed of mechanical structures, avoiding the need for electronic detection systems. This makes the fire extinguishing device less susceptible to interference and simple to maintain. Moreover, after each use, the connecting valve 20 can be removed from the liquid outlet, and after filling the liquid storage chamber with new extinguishing agent and pressurized gas, the connecting valve with a new glass bulb temperature sensing unit 30 can be installed, allowing for reuse.

[0037] In some embodiments, the connecting valve 20 is equipped with a pressure monitoring gauge 24 for detecting the pressure in the liquid outlet channel 23. Specifically, the pressure monitoring gauge 24 can provide real-time feedback on whether the pressure in the liquid outlet channel 23 is within the design range. If the pressure is too low, the sealing component 22 may not function properly after the glass bulb temperature sensing unit 30 breaks, or the extinguishing agent 11 may not spray at a sufficient speed or flow rate, affecting the fire extinguishing effect. If the pressure is too high, it may cause the storage tank to rupture. Thus, pressure monitoring can provide early warning of abnormal pressure, facilitating timely detection and maintenance by inspection personnel, and preventing device failure. Furthermore, the pressure monitoring gauge 24 is selected from high-temperature resistant and corrosion-resistant pressure sensors.

[0038] In some embodiments, the connecting valve 20 is threadedly connected to the outlet. Specifically, this allows for easy repeated installation and removal of the connecting valve 20. Installation is completed simply by screwing the external thread on the connecting valve 20 into the internal thread of the outlet. When it is necessary to inspect, clean, or replace components such as the connecting valve 20, the multi-hole nozzle 21, or the sealing component 22, the connecting valve 20 can be easily removed from the outlet by reverse screwing the thread without damaging the extinguishing agent storage tank 10 or other components. Furthermore, a sealing ring is provided at the thread to enhance the sealing effect, ensuring stable pressure within the storage chamber and proper storage of the extinguishing agent 11.

[0039] In some embodiments, the sealing element 22 is a pre-compression spring. Specifically, the spring is initially compressed, providing a stable and continuous force for sealing. Under normal circumstances, the pre-compression spring can tightly press against the connection between the liquid outlet channel 23 and the multi-hole nozzle 21, effectively blocking the connection between the two and preventing the extinguishing agent 11 from leaking when not triggered, thus ensuring the stable storage of the pressure in the liquid storage chamber and the extinguishing agent 11. When the glass bulb temperature sensing unit 30 breaks due to the ambient temperature exceeding the critical temperature, the limiting force on the pre-compression spring is released. Since the spring itself has elastic potential energy, it can quickly release energy, causing itself to deform or displace, so that the sealing state can be quickly converted to the release state, allowing the liquid outlet channel 23 and the multi-hole nozzle 21 to quickly connect, thereby enabling the extinguishing agent 11 to be sprayed out in a timely manner and improving the response speed of the fire extinguishing device.

[0040] In some embodiments, the fire extinguishing device further includes a mounting member 40, on which the glass bulb temperature sensing unit 30 is mounted. The mounting member 40 is detachably mounted on the connecting valve 20 and causes the glass bulb temperature sensing unit 30 to limit the blocking component. Specifically, the glass bulb temperature sensing unit 30 is a vulnerable component, and its detachable design allows it to be replaced individually without needing to be scrapped after use, making it more suitable for small-scale and large-scale application sites.

[0041] In some embodiments, the pressurized gas 12 is nitrogen. Specifically, nitrogen is an inert gas with stable chemical properties, suitable for various liquid extinguishing media (such as perfluorohexanone and water-based extinguishing agent 11). It generally does not react with extinguishing agents at room temperature, thus avoiding failure or dangerous reactions caused by mixing the pressurized gas 12 with the extinguishing agent, ensuring the reliability of the device during long-term storage. In other embodiments, the pressurized gas 12 is an inert gas such as helium or argon, or carbon dioxide.

[0042] In some embodiments, the extinguishing agent 11 is liquid perfluorohexanone. Specifically, perfluorohexanone has excellent fire extinguishing performance; its extinguishing concentration is low, enabling it to quickly extinguish Class A, B, and C fires, as well as electrical fires. When a fire occurs, perfluorohexanone can rapidly vaporize, absorbing a large amount of heat and reducing the temperature of the combustion zone. Simultaneously, its vapor can effectively inhibit free radicals in the combustion reaction, interrupting the combustion chain reaction, thereby extinguishing the fire quickly and effectively. For scenarios such as distribution boxes and precision instrument cabinets where small fire extinguishing devices are used, it can control the fire in a short time, reducing damage to equipment. In other embodiments, the extinguishing agent 11 can also be dry powder extinguishing agent 11 or heptafluoropropane.

[0043] In some embodiments, the number of orifice nozzles 21 is at least three, and the multiple orifice nozzles 21 are evenly arranged. Specifically, three or more evenly arranged orifice nozzles 21 can achieve more comprehensive coverage of the protected area. In confined spaces such as electrical distribution boxes and precision instrument cabinets, due to the complex layout of equipment, there may be some corners that are not easily covered by a single nozzle. Multiple evenly arranged nozzles can spray the extinguishing agent 11 from different angles and positions, ensuring that the entire protected area is covered by the extinguishing agent 11, avoiding fire extinguishing dead spots, and thus improving the reliability of fire extinguishing. Furthermore, the orifice nozzles 21 are provided with an atomizing structure, so that during fire extinguishing, the extinguishing agent 11 can be converted from a liquid state into fine droplets, so that the extinguishing agent 11 is sprayed out in a mist form. The mist-like extinguishing agent 11 can cover the fire source more widely and evenly, greatly increasing the contact area between the extinguishing agent 11 and the burning material, thereby improving the fire extinguishing efficiency.

[0044] In some embodiments, the extinguishing agent storage tank 10 has a cylindrical structure. Specifically, when subjected to internal pressure, the cylindrical structure allows the pressure to be evenly distributed across the tank surface. When the extinguishing agent storage tank 10 contains extinguishing agents and pressurized gas 12 under pressure, the cylindrical tank will not experience stress concentration. Compared to other shapes (such as square), it can better resist internal pressure, reducing the risk of tank rupture or deformation, thereby ensuring the safety of the device during storage and use.

[0045] In some embodiments, the extinguishing agent storage tank 10 and the connecting valve 20 are made of high-strength heat-resistant metal. Specifically, this provides the extinguishing agent storage tank 10 and the connecting valve 20 with good corrosion resistance, preventing agent contamination or leakage caused by erosion of the tank's inner wall. Furthermore, this results in a low coefficient of thermal expansion for the extinguishing agent storage tank 10 and the connecting valve 20, reducing changes in component clearances due to temperature variations (such as loosening of threaded connections or failure of seals), ensuring normal operation of the device under extreme conditions. Further, the extinguishing agent storage tank 10 and the connecting valve 20 are made of 316 stainless steel.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fire extinguishing device, characterized in that, include: The fire extinguishing agent storage tank has an internal liquid storage chamber, which stores fire extinguishing agent and pressurized gas to provide power. The fire extinguishing agent storage tank is also provided with a liquid outlet that connects to the liquid storage chamber. A connecting valve is detachably installed at the liquid outlet. The connecting valve has a liquid outlet channel and multiple multi-hole nozzles on its side. The multiple multi-hole nozzles are connected to the liquid outlet through the liquid outlet channel. A movable sealing member is provided between the multi-hole nozzles and the liquid outlet channel. The sealing member has a blocking state and a releasing state. When the sealing member is in the blocking state, the sealing member blocks the connection between the liquid outlet channel and the multi-hole nozzles. When the sealing member is in the releasing state, the sealing member avoids the connection path between the liquid outlet channel and the multi-hole nozzles. as well as A glass bulb temperature sensing unit is installed on top of the connecting valve and limits the sealing element to maintain its sealing state. When the ambient temperature exceeds the critical temperature of the glass bulb temperature sensing unit, the glass bulb temperature sensing unit breaks, and the sealing element changes from the sealing state to the releasing state under the drive of the pressurized gas, allowing the multi-hole nozzle to connect with the liquid outlet through the liquid outlet channel.

2. The fire extinguishing device as described in claim 1, characterized in that, The connecting valve is equipped with a pressure monitoring gauge for detecting the pressure in the liquid outlet channel.

3. The fire extinguishing device as described in claim 1, characterized in that, The connecting valve is threadedly connected to the liquid outlet.

4. The fire extinguishing device as described in claim 1, characterized in that, The sealing component is a pre-compressed spring.

5. The fire extinguishing device as described in claim 1, characterized in that, The fire extinguishing device also includes an installation component, on which the glass bulb temperature sensing unit is installed. The installation component is detachably installed on the connecting valve and causes the glass bulb temperature sensing unit to limit the sealing component.

6. The fire extinguishing device as described in claim 1, characterized in that, The pressurized gas is nitrogen.

7. The fire extinguishing device as described in claim 1, characterized in that, The extinguishing agent is liquid perfluorohexanone.

8. The fire extinguishing device as described in claim 1, characterized in that, The number of the multi-hole nozzles is at least three, and the multiple multi-hole nozzles are evenly arranged.

9. The fire extinguishing device as described in claim 1, characterized in that, The fire extinguishing agent storage tank has a cylindrical structure.

10. The fire extinguishing device as described in claim 1, characterized in that, The extinguishing agent storage tank and the connecting valve are made of high-strength heat-resistant metal.

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