Fire extinguishing device capable of being triggered repeatedly and electrical equipment
By combining heat-start and electric-start fire extinguishing modules in the aerosol fire extinguishing device, the problems of low trigger reliability and inability to trigger multiple times in the prior art are solved, and multiple effective fire extinguishing in complex environments are achieved, which improves safety and reduces costs.
Patent Information
- Application Number
- CN202421845344.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Existing aerosol fire extinguishing devices are limited by the heat-sensitive line ignition point temperature, resulting in low trigger reliability and the inability to trigger multiple times, resulting in the inability to continuously and effectively extinguish fires in complex environments.
By combining the hot-start fire extinguishing unit with the electric-start fire extinguishing unit, a fire extinguishing device including a hot-start fire extinguishing module and at least two electric-start fire extinguishing modules is designed, and multiple triggering functions are achieved using components such as thermal wires and electric ignition heads.
It realizes multiple effective fire extinguishing under various environmental conditions, improves the start-up reliability of fire extinguishing devices, ensures the continuous safety of electrical equipment in complex environments, and reduces the cost of fire extinguishing.
Smart Images
Figure CN222969078U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting, in particular to a fire extinguishing device that can be triggered multiple times and an electrical equipment. Background Art
[0002] Aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. The density of these solid or liquid particles can be slightly different from or very different from the density of the gas medium. From the perspective of fluid mechanics, aerosol is essentially a multiphase fluid with a gaseous continuous phase and solid and liquid dispersed phases.
[0003] An aerosol fire extinguishing device sprays the fire extinguishing agent inside in the form of aerosol by a certain chemical or physical method for fire extinguishing. The basic principle of its fire extinguishing is that the solid fire extinguishing particle generator filled in the equipment cavity decomposes a large amount of highly efficient fire extinguishing substances under the interaction of potassium salt gas generating agents and releases them to the outside, so as to achieve the purpose of fire extinguishing.
[0004] The existing aerosol fire extinguishing devices are mainly started by the spontaneous combustion of a thermal sensitive wire, and the spontaneous combustion temperature range is 170°C to 210°C. In the case of large temperature fluctuations or complex environmental conditions, the reliability of triggering may be affected. And due to the current design that cannot achieve multiple eruptions, once the aerosol is triggered and released, the device loses its fire extinguishing function. At this time, if there is an open fire or the fire reignites, the device cannot effectively carry out fire extinguishing operations again. Summary of the Utility Model
[0005] The utility model aims to provide a fire extinguishing device that can be triggered multiple times and an electrical equipment, so as to solve the problems in the prior art that the aerosol fire extinguishing device is limited by the ignition temperature of the thermal sensitive wire, resulting in low triggering reliability and inability to be triggered multiple times. By cooperating the thermal start fire extinguishing unit with the electrical start fire extinguishing unit, the device can effectively extinguish fires multiple times under various environmental conditions.
[0006] To solve the above technical problems, the technical solution adopted by the utility model is as follows:
[0007] A fire extinguishing device that can be triggered multiple times, suitable for being installed in electrical equipment, the fire extinguishing device includes;
[0008] A thermal start fire extinguishing module, including a first aerosol unit and a thermal sensitive wire connected to each other, at least part of the thermal sensitive wire is located in the fire detection area of the electrical equipment;
[0009] At least two electrical start fire extinguishing modules, having different start conditions, the start conditions include thermal runaway and open fire, and the temperature of the thermal runaway is greater than the ignition temperature of the thermal sensitive wire;
[0010] A power supply, electrically connected to at least two of the electric start fire extinguishing modules respectively, is configured to emit an electrical signal when thermal runaway occurs or an open fire appears, so as to drive and start the corresponding electric start fire extinguishing module.
[0011] In some embodiments, the power supply is electrically connected to the controller of the electrical equipment, and the power supply automatically emits the electrical signal under the control of the controller;
[0012] And / or;
[0013] The power supply is electrically connected to the function button of the electrical equipment, and the function button is used to manually control the power supply to emit the electrical signal.
[0014] In some embodiments, the electric start fire extinguishing module includes an electric ignition head, a current limiting resistor, a detonating charge package and a second aerosol unit connected in series in sequence, and the power supply is connected to at least two of the electric ignition heads respectively through wires.
[0015] In some embodiments, a first fiberglass tube is sleeved outside the wire.
[0016] In some embodiments, the resistance value of the current limiting resistor is 5Ω - 10Ω.
[0017] In some embodiments, the output voltage of the power supply is 12V or 24V, and the output current of the power supply is greater than or equal to 700mA.
[0018] In some embodiments, a second fiberglass tube is sleeved outside the thermal sensitive wire.
[0019] In some embodiments, the ignition temperature of the thermal sensitive wire is 160°C - 180°C.
[0020] This application also provides an electrical equipment, including:
[0021] The fire extinguishing device that can be triggered multiple times as described above;
[0022] A controller, electrically connected to the power supply;
[0023] A detection mechanism, electrically connected to the controller, is configured to detect whether thermal runaway occurs and whether an open fire appears in the fire detection area, and the controller controls the power supply to automatically emit the electrical signal according to the detection result of the detection mechanism;
[0024] A function button, electrically connected to the power supply, is configured to manually control the power supply to emit the electrical signal.
[0025] In some embodiments, the detection mechanism includes a temperature sensor and a gas sensor.
[0026] Due to the application of the above technical solutions, the beneficial effects of this application compared with the prior art are as follows:
[0027] Traditional aerosol fire extinguishing devices can only be triggered once by the spontaneous combustion of thermal wires. However, the fire extinguishing device of this application realizes the function of multiple triggers through the combination of a thermal start fire extinguishing module and at least two electric start fire extinguishing modules. This enables the fire extinguishing device to be repeatedly started when needed to ensure the continuous safety of electrical equipment in complex environments.
[0028] At the same time, the electric start fire extinguishing modules have different start conditions, including detecting thermal runaway or open flames. This improves the start reliability of the fire extinguishing device, no longer relying on a single thermal wire, and enabling continuous and effective fire protection responses according to different stages and situations of the fire.
[0029] In addition, the trigger of the thermal start fire extinguishing module is limited to temperature conditions, and its cost is lower than that of the electric start module. The thermal start fire extinguishing module is triggered when there is no open flame in the initial stage of the fire and the temperature in the fire detection area reaches the ignition temperature of the thermal wire. This can mix the fire extinguishing substance in the first aerosol unit with the combustible gas generated due to temperature rise, break the combustion chain of the combustible gas, effectively reduce the possibility of open flame appearance, and thus reduce the trigger probability of the electric start fire extinguishing module, thereby saving the fire extinguishing cost. Description of the Drawings
[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0031] Figure 1 It is a schematic structural diagram of the fire extinguishing device in an embodiment of the present invention.
[0032] Description of the reference numerals:
[0033] 1 - Electric ignition head; 2 - Current limiting resistor; 3 - Detonating charge package; 4 - Second aerosol unit; 5 - Wire; 6 - Thermal wire; 7 - First aerosol unit; 10 - Thermal start fire extinguishing module; 20 - Electric start fire extinguishing module; 30 - Power supply; 40 - Fire detection area. Detailed Embodiments
[0034] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.
[0035] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances for the embodiments of this application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0036] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.
[0037] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0038] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can also be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0039] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will detail the present application with reference to the accompanying drawings and in combination with the embodiments.
[0040] An embodiment of the present application provides an electrical device, which can be a battery module, an electrical cabinet, and the present application does not specifically limit the type of the electrical device. In this embodiment, the electrical device includes a fire extinguishing device that can be triggered multiple times, a controller, a detection mechanism, and a function button.
[0041] Please refer to Figure 1 , the above-mentioned fire extinguishing device includes a thermal start fire extinguishing module 10, at least two electric start fire extinguishing modules 20, and a power supply 30.
[0042] Specifically, the thermal start fire extinguishing module 10 includes a first aerosol unit 7 and a thermal sensitive wire 6 connected to each other, and at least part of the thermal sensitive wire 6 is located in the fire detection area 40 of the electrical device. The first aerosol unit 7 has a conventional structure and will not be elaborated here.
[0043] In some embodiments, a second fiberglass tube is sleeved outside the thermal sensitive wire 6.
[0044] In some embodiments, the ignition temperature of the thermal sensitive wire 6 is 160°C to 180°C.
[0045] At least two electric start fire extinguishing modules 20 have different start conditions, and the start conditions include thermal runaway and open fire, and the temperature of thermal runaway is greater than the ignition temperature of the thermal sensitive wire 6.
[0046] In some embodiments, the electric start fire extinguishing module 20 includes an electric ignition head 1, a current limiting resistor 2, a detonating charge package 3, and a second aerosol unit 4 connected in series in sequence, and the power supply 30 is respectively connected to at least two electric ignition heads 1 through a wire 5.
[0047] In some embodiments, the resistance value of the current limiting resistor 2 is 5Ω to 10Ω.
[0048] In some embodiments, a first fiberglass tube is sleeved outside the wire 5.
[0049] The power supply 30 is respectively electrically connected to the electric ignition heads 1 of at least two electric start fire extinguishing modules 20, and is used to send an electrical signal when thermal runaway or open fire occurs, so as to drive and start the corresponding electric start fire extinguishing module 20.
[0050] In some embodiments, the output voltage of the power supply 30 is 12V or 24V, and the output current of the power supply 30 is greater than or equal to 700mA.
[0051] In some embodiments, the power supply 30 is electrically connected to the controller of the electrical device, and the power supply 30 automatically emits an electrical signal under the control of the controller; and / or the power supply 30 is electrically connected to the function button of the electrical device, and the function button is used to manually control the power supply 30 to emit an electrical signal.
[0052] Specifically, the detection mechanism is electrically connected to the controller and is used to detect whether there is thermal runaway and whether there is an open fire in the fire detection area 40. The controller controls the power supply 30 to automatically emit an electrical signal according to the detection result of the detection mechanism. Alternatively, when the operator observes that the temperature of the electrical device rises or there is an open fire, the operator can control the power supply 30 to emit an electrical signal by operating the function button.
[0053] In some embodiments, the detection mechanism includes a temperature sensor and a gas sensor. It is a conventional structure.
[0054] In this embodiment, the fire extinguishing device has three electrically actuated fire extinguishing modules 20, which are suitable for electrical devices with better high-temperature resistance. For such electrical devices, an open fire requires relatively high temperature conditions, and this temperature condition is higher than the ignition temperature of the thermal fuse wire, such as 260°C. The fire extinguishing process of this fire extinguishing device is specifically as follows:
[0055] When the temperature in the fire detection area 40 reaches the ignition temperature of the thermal fuse wire 6, the thermal fuse wire 6 self-ignites and triggers the start of the first aerosol unit 7. The fire extinguishing substance of the first aerosol unit 7 mixes with the combustible gas generated inside the electrical device, breaking the combustion chain of the combustible gas, making it difficult for the combustible gas to catch fire.
[0056] When the temperature in the fire detection area 40 continues to rise to thermal runaway, the start condition of one of the electrically actuated fire extinguishing modules 20 is met. At this time, the controller receives the detection result of the detection mechanism and controls the power supply 30 to automatically send an electrical signal to the corresponding electrically actuated fire extinguishing module 20 to trigger it to further reduce the flammability of the combustible gas.
[0057] When there is an open fire in the fire detection area 40, the start conditions of the remaining two electrically actuated fire extinguishing modules 20 are met. At this time, the controller receives the detection result of the detection mechanism and controls the power supply 30 to automatically send an electrical signal to the electrically actuated fire extinguishing module 20 that ranks first among the corresponding two electrically actuated fire extinguishing modules 20 to trigger it to extinguish the fire.
[0058] When the fire reignites after extinguishing in the fire detection area 40, the controller receives the detection result of the detection mechanism and controls the power supply 30 to automatically send an electrical signal to the electrically actuated fire extinguishing module 20 that ranks second among the corresponding two electrically actuated fire extinguishing modules 20 to trigger it to extinguish the fire again.
[0059] In some other embodiments, the fire extinguishing device has two electrically actuated fire extinguishing modules 20, which are suitable for electrical equipment with relatively weak high-temperature resistance. For this type of electrical equipment, the temperature required for an open fire to occur is relatively low, relatively close to the ignition temperature of the thermal fuse wire, for example, 190°C. The fire extinguishing process of this fire extinguishing device is similar to that of the fire extinguishing device having three electrically actuated fire extinguishing modules 20 described above, except that: after the thermally actuated fire extinguishing module is triggered, the temperature in the fire detection area 40 continues to rise. Due to the relatively weak high-temperature resistance of the electrical equipment, an open fire appears earlier. At this time, the electrically actuated fire extinguishing module 20 ranked first among the two electrically actuated fire extinguishing modules 20 is directly triggered to extinguish the fire.
[0060] Due to the application of the above technical solutions, the beneficial effects of the present application compared with the prior art are as follows:
[0061] The traditional aerosol fire extinguishing device can only be triggered once by the spontaneous combustion of the thermal fuse wire, while the fire extinguishing device of the present application realizes the function of multiple triggers through the combination of the thermally actuated fire extinguishing module and at least two electrically actuated fire extinguishing modules. This enables the fire extinguishing device to be repeatedly activated when needed to ensure the continuous safety of electrical equipment in a complex environment.
[0062] At the same time, the electrically actuated fire extinguishing modules have different activation conditions, including detecting thermal runaway or an open fire. This improves the activation reliability of the fire extinguishing device, no longer relying on a single thermal fuse wire, and can perform continuous and effective fire protection responses according to different stages and situations of the fire.
[0063] In addition, the triggering of the thermally actuated fire extinguishing module is limited to temperature conditions, and its cost is lower than that of the electrically actuated module. The thermally actuated fire extinguishing module is triggered when there is no open fire in the initial stage of the fire and the temperature in the fire detection area reaches the ignition temperature of the thermal fuse wire. This can mix the fire extinguishing substance in the first aerosol unit with the combustible gas generated due to the temperature rise, break the combustion chain of the combustible gas, effectively reduce the possibility of an open fire occurring, and further reduce the triggering probability of the electrically actuated fire extinguishing module, thereby saving the fire extinguishing cost.
[0064] Finally, it should be noted that the above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A fire extinguishing device that can be triggered multiple times, suitable for installation in electrical equipment, characterized in that: The fire extinguishing device comprises: A heat-activated fire extinguishing module, comprising a first aerosol unit and a heat-sensitive wire connected to each other, at least a portion of the heat-sensitive wire being located within a fire detection area of the electrical device; At least two electrically activated fire extinguishing modules have different activation conditions, wherein the activation conditions include the occurrence of thermal runaway and the occurrence of open flames, and the temperature of the thermal runaway is greater than the ignition temperature of the thermistor wire; The power supply is electrically connected to at least two of the electrically activated fire extinguishing modules, and is used to send out an electrical signal to drive and activate the corresponding electrically activated fire extinguishing module when thermal runaway or open fire occurs.
2. The fire extinguishing device that can be triggered multiple times according to claim 1, characterized in that: The power supply is electrically connected to the controller of the electrical device, and the power supply automatically sends the electrical signal under the control of the controller; and / or; The power supply is electrically connected to a function button of the electrical device, and the function button is used to manually control the power supply to send the electrical signal.
3. The fire extinguishing device that can be triggered multiple times according to claim 1, characterized in that: The electric start fire extinguishing module comprises an electric ignition head, a current limiting resistor, an explosive charge and a second aerosol unit which are connected in series in sequence, and the power supply is connected to at least two of the electric ignition heads through wires.
4. The fire extinguishing device that can be triggered multiple times according to claim 3, characterized in that: The outer side of the wire is sheathed with a first glass fiber tube.
5. The fire extinguishing device that can be triggered multiple times according to claim 3, characterized in that: The resistance of the current limiting resistor is 5Ω to 10Ω.
6. The fire extinguishing device that can be triggered multiple times according to claim 1, characterized in that: The output voltage of the power supply is 12V or 24V, and the output current of the power supply is greater than or equal to 700mA.
7. The fire extinguishing device that can be triggered multiple times according to claim 1, characterized in that: A second glass fiber tube is sheathed outside the thermal sensitive wire.
8. The fire extinguishing device that can be triggered multiple times according to claim 1, characterized in that: The ignition temperature of the thermal wire is 160°C to 180°C.
9. An electrical device, characterized in that: include: A fire extinguishing device that can be triggered multiple times as described in any one of claims 2 to 8; A controller, electrically connected to the power supply; A detection mechanism, electrically connected to the controller, for detecting whether thermal runaway and open fire occur in the fire detection area, wherein the controller controls the power supply to automatically send the electrical signal according to the detection result of the detection mechanism; A function button is electrically connected to the power supply and is used to manually control the power supply to send the electrical signal.
10. The electrical device according to claim 9, characterized in that The detection mechanism includes a temperature sensor and a gas sensor.