Detection mechanism and fire extinguishing device

Abstract

The present invention discloses a detection mechanism, which includes a smoke generation structure and a smoke sensor. The smoke generation structure includes an ignition layer and a smoke generation layer. The ignition layer and the smoke generation layer are stacked. The ignition layer is used to be connected to the component to be detected, and when the temperature of the component to be detected is greater than a first preset temperature, the ignition layer can ignite the smoke generation layer. The smoke generation layer is used to generate smoke after being ignited. Connect the smoke generation structure to the surface of the component to be detected. During the process of temperature runaway and rise of the component to be detected, when the temperature rises to the first preset temperature, the ignition layer can ignite the smoke generation layer, so that the smoke generation layer generates smoke. Then the smoke sensor detects the smoke, and the fire extinguishing mechanism sprays a fire extinguishing agent onto the component to be detected for suppression or extinguishment, and it will not be detected by the smoke sensor only in the stage of intense fire occurrence, thus avoiding the expansion of losses. The present invention also relates to a fire extinguishing device.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and particularly to a detection device and a fire-extinguishing device. Background Art

[0002] Currently, a smoke sensor is set at a fixed position. When a fire breaks out at a position far from the smoke sensor, the generated smoke needs to spread to the position where the smoke sensor is located before it can be detected by the smoke sensor. However, the early-stage smoke spreads slowly and may only be detected by the smoke sensor during the stage when the fire occurs violently, resulting in an enlarged loss. Summary of the Invention

[0003] The object of the present invention is to provide a detection mechanism and a fire-extinguishing device that can quickly detect a fire and avoid an enlarged loss.

[0004] A detection mechanism includes:

[0005] A smoke-producing structure, including an ignition layer and a smoke-producing layer. The ignition layer and the smoke-producing layer are stacked. The ignition layer is used to connect to a component to be detected, and when the temperature of the component to be detected is greater than a first preset temperature, the ignition layer can ignite the smoke-producing layer. The smoke-producing layer is used to generate smoke after being ignited; and

[0006] A smoke sensor, arranged on one side of the component to be detected, for detecting the smoke generated by the smoke-producing layer and the component to be detected.

[0007] By arranging the above detection mechanism, the smoke-producing structure is connected to the surface of the component to be detected. During the process of the temperature of the component to be detected getting out of control and rising, when the temperature rises to the first preset temperature, the ignition layer can ignite the smoke-producing layer, causing the smoke-producing layer to generate smoke. Then, the smoke sensor detects the smoke, and the fire-extinguishing mechanism sprays a fire extinguishing agent onto the component to be detected for suppression or fire extinguishing. In this way, it can be detected before the temperature of the component to be detected continues to rise to generate smoke, or before the smoke generated by the component to be detected is transmitted to the smoke sensor, that is, it will not be detected by the smoke sensor during the stage when the fire occurs violently, avoiding an enlarged loss.

[0008] In one embodiment, the smoke-producing structure further includes an outer heat-insulating layer. The outer heat-insulating layer, the smoke-producing layer, and the ignition layer are stacked in sequence. The outer heat-insulating layer is provided with a plurality of first ventilation holes, and each first ventilation hole penetrates the outer heat-insulating layer along the arrangement direction of the outer heat-insulating layer and the smoke-producing layer.

[0009] In one embodiment, the smoke generating structure further includes an inner heat insulation layer. The outer heat insulation layer, the smoke generating layer, the ignition layer, and the inner heat insulation layer are sequentially stacked. The inner heat insulation layer is used to connect to the component to be detected. The inner heat insulation layer is provided with a plurality of second ventilation holes, and each of the second ventilation holes penetrates the inner heat insulation layer along the arrangement direction of the ignition layer and the inner heat insulation layer.

[0010] In one embodiment, the smoke generating structure further includes a sealing layer. The sealing layer is connected between the outer heat insulation layer and the inner heat insulation layer to enclose a smoke generating space with the outer heat insulation layer and the inner heat insulation layer. The smoke generating layer and the ignition layer are stacked in the smoke generating space. Each of the first ventilation holes and each of the second ventilation holes communicate with the smoke generating space.

[0011] In one embodiment, the sealing layer has a melting state in which it melts to connect the smoke generating space and the outside;

[0012] When the temperature of the component to be detected is greater than a second preset temperature, the sealing layer enters the melting state, and the first preset temperature is greater than the second preset temperature.

[0013] In one embodiment, there are a plurality of the smoke generating structures, and each of the smoke generating structures is used to connect to a corresponding component to be detected.

[0014] In one embodiment, the smoke generating structure further includes a combustion assisting layer, and the combustion assisting layer is disposed between the ignition layer and the smoke generating layer;

[0015] When the temperature of the component to be detected is greater than the first preset temperature, the ignition layer can ignite the combustion assisting layer and the smoke generating layer.

[0016] A fire extinguishing device includes the above-mentioned detection mechanism.

[0017] In one embodiment, the fire extinguishing device further includes a fire extinguishing mechanism. The fire extinguishing mechanism is electrically connected to the smoke sensor and is used to spray a fire extinguishing agent towards the component to be detected according to the detection information of the smoke sensor.

[0018] In one embodiment, the fire extinguishing device further includes a controller, and the controller is electrically connected to the fire extinguishing mechanism and the smoke sensor. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a fire extinguishing device provided by an embodiment of the present invention;

[0020] Figure 2 is Figure 1 a cross-sectional view of the smoke generating structure of the fire extinguishing device shown.

[0021] Reference Signs:

[0022] 100, fire extinguishing device; 200, component to be detected;

[0023] 10, smoke generating structure; 20, smoke sensor; 30, fire extinguishing mechanism; 40, controller; 11, ignition layer; 12, smoke generating layer; 13, outer heat insulation layer; 131, first ventilation hole; 14, inner heat insulation layer; 141, second ventilation hole; 15, combustion assisting layer; 16, sealing layer. Detailed Embodiments

[0024] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed embodiments of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the present invention, unless otherwise clearly specified or defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified or defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0030] As Figure 1 shown, an embodiment of the present invention provides a fire extinguishing device 100, including a detection mechanism and a fire extinguishing mechanism 30. The detection mechanism is used to detect information of a to-be-detected member 200, and the fire extinguishing mechanism 30 is used to spray a fire extinguishing agent onto the to-be-detected member 200 according to the detection information of the detection mechanism, so as to extinguish a fire when the to-be-detected member 200 catches fire.

[0031] Please also refer to Figure 2 In some embodiments, the detection mechanism includes a smoke generating structure 10 and a smoke sensor 20.

[0032] The smoke generating structure 10 includes a lighting layer 11 and a smoke generating layer 12. The lighting layer 11 and the smoke generating layer 12 are stacked. The lighting layer 11 is used to be connected to the to-be-detected member 200, and the lighting layer 11 can light the smoke generating layer 12 when the temperature of the to-be-detected member 200 is greater than a first preset temperature. The smoke generating layer 12 is used to generate smoke after being lit.

[0033] The smoke sensor 20 is disposed on one side of the component to be detected 200 for detecting the smoke generated by the smoke layer 12 and the component to be detected 200.

[0034] By arranging the above-mentioned detection mechanism, the smoke generation structure 10 is connected to the surface of the component to be detected 200. During the process of the temperature of the component to be detected 200 getting out of control and rising, when the temperature rises to the first preset temperature, the ignition layer 11 can ignite the smoke layer 12, causing the smoke layer 12 to generate smoke. Then, the smoke sensor 20 detects the smoke, and the fire extinguishing mechanism 30 sprays a fire extinguishing agent onto the component to be detected 200 for suppression or fire extinguishing. In this way, before the temperature of the component to be detected 200 continues to rise to generate smoke, or before the smoke generated by the component to be detected 200 is transmitted to the smoke sensor 20, it can be detected, that is, it will not be detected by the smoke sensor 20 only in the stage of intense fire occurrence, avoiding the expansion of losses.

[0035] It can be understood that since the ignition layer 11 is connected to the component to be detected 200, when the temperature of the component to be detected 200 gets out of control, heat can be transmitted to the ignition layer 11.

[0036] Assume that the temperature of the component to be detected 200 during a fire and in the stage of intense occurrence is the combustion temperature. It can be determined that the first preset temperature is lower than the combustion temperature, so that the smoke layer 12 is ignited by the ignition layer 11 before the temperature of the component to be detected 200 rises to the combustion temperature, and the smoke layer 12 generates smoke and is detected by the smoke sensor 20.

[0037] It should be noted that the smoke generated by the smoke layer 12 also needs to be transmitted to the smoke sensor 20. However, since the smoke generation time of the smoke layer 12 is earlier than that of the component to be detected 200, it can still be detected by the smoke sensor 20 as early as possible.

[0038] In addition, in this embodiment, the component to be detected 200 is a battery module, while in other embodiments, the component to be detected 200 can also be other flammable components that need to be monitored.

[0039] In practical applications, the fire extinguishing mechanism 30 is electrically connected to the smoke sensor 20 and is used to spray a fire extinguishing agent onto the component to be detected 200 according to the detection information of the smoke sensor 20.

[0040] In some embodiments, there are multiple smoke generation structures 10, and each smoke generation structure 10 is used to be connected to a corresponding component to be detected 200. That is, in the case where there are multiple components to be detected 200, each component to be detected 200 can be detected.

[0041] It can be understood that, as Figure 1As shown, when the component 200 to be detected is a battery module, multiple battery modules are arranged in a battery box, and a smoke generating structure 10 is provided on the surface of each battery module, while the smoke sensor 20 is arranged in the battery box.

[0042] In some embodiments, the ignition layer 11 is made of paper, and the ignition point of the paper is 130 °C - 180 °C. When the component 200 to be detected is a battery module, the temperature before the battery module undergoes thermal runaway can ignite the ignition layer 11, and after the ignition layer 11 is ignited, it can ignite the smoke generating layer 12.

[0043] It should be noted that when the component 200 to be detected reaches the first preset temperature, it can ignite the ignition layer 11, and then the heat generated by the combustion of the ignition layer 11 can ignite the smoke generating layer 12. Therefore, it can be understood that the ignition layer 11 can ignite the smoke generating layer 12 when the component 200 to be detected reaches the first preset temperature.

[0044] In some embodiments, the smoke generating structure 10 further includes an outer heat insulation layer 13. The outer heat insulation layer 13, the smoke generating layer 12, and the ignition layer 11 are stacked in sequence. The outer heat insulation layer 13 is used to prevent a large amount of heat generated by the ignition layer 11 from affecting the adjacent component 200 to be detected.

[0045] It can be determined that when the component 200 to be detected is a battery module, the outer heat insulation layer 13 can prevent the heat generated by the ignition layer 11 from affecting the adjacent battery modules.

[0046] In practical applications, the outer heat insulation layer 13 is provided with a plurality of first ventilation holes 131. Each first ventilation hole 131 penetrates the outer heat insulation layer 13 along the arrangement direction of the outer heat insulation layer 13 and the smoke generating layer 12, so that when the smoke generating layer 12 generates smoke, the smoke can be discharged from the first ventilation holes 131.

[0047] In some embodiments, the smoke generating structure 10 further includes an inner heat insulation layer 14. The outer heat insulation layer 13, the smoke generating layer 12, the ignition layer 11, and the inner heat insulation layer 14 are stacked in sequence. The inner heat insulation layer 14 is used to connect with the component 200 to be detected, and the inner heat insulation layer 14 is provided with a plurality of second ventilation holes 141. Each second ventilation hole 141 penetrates the inner heat insulation layer 14 along the arrangement direction of the ignition layer 11 and the inner heat insulation layer 14.

[0048] In this way, the second ventilation holes 141 in the inner heat insulation layer 14 can allow hot air to circulate when the component 200 to be detected undergoes thermal runaway, that is, transfer the heat to the ignition layer 11. When the ignition layer 11 is ignited, the inner heat insulation layer 14 can also isolate the high heat of the ignition layer 11 from affecting the detection layer.

[0049] In a specific embodiment, the outer heat insulation layer 13 and the inner heat insulation layer 14 are heat insulation nets.

[0050] In some embodiments, the smoke-producing layer 12 includes three types. The first type is a material with a high carbon content, preferably polycyclic aromatic hydrocarbons, such as liquid paraffin. The second type includes yellow phosphorus and white phosphorus.

[0051] The third type includes potassium chlorate, potassium nitrate, ammonium sulfate, yellow clay, sawdust, and talcum powder. The particle size requirement for potassium chlorate is 80 - 100 mesh, and the purity is above 90%. It mainly functions as a combustible. The particle size and purity requirements for potassium nitrate are the same as those for potassium chlorate, and it mainly functions as an auxiliary combustible and smoke-producing agent. The particle size requirement for ammonium sulfate is 80 - 100 mesh, and the purity requirement is above 50%. It mainly functions as a smoke-producing agent. Yellow clay can be replaced by yellow soil, and it mainly functions as a binder. When using it, the sand grains need to be removed. Sawdust is the carrier when potassium chlorate and potassium nitrate burn. The fineness does not exceed 80 mesh, and it mainly functions as an auxiliary combustible. Talcum powder functions as a lubricating and bonding agent to facilitate the demolding of the finished product.

[0052] It should be noted that during the preparation process of the third type of smoke-producing layer 12, the method of removing sand grains from yellow soil can be to stir the yellow soil into mud with water, wait for precipitation, take the upper slurry and dry it by baking or sunning, and finally crush it.

[0053] In some embodiments, the smoke-producing structure 10 further includes a combustion-supporting layer 15. The combustion-supporting layer 15 is disposed between the ignition layer 11 and the smoke-producing layer 12. When the temperature of the workpiece to be detected 200 is greater than the first preset temperature, the ignition layer 11 can ignite the combustion-supporting layer 15 and the smoke-producing layer 12. After the combustion-supporting layer 15 and the smoke-producing layer 12 are ignited, the combustion-supporting layer 15 can help the smoke-producing layer 12 burn, thereby accelerating the rate of smoke production.

[0054] It should be noted that after the ignition layer 11 is ignited, it will first ignite the combustion-supporting layer 15. The combustion-supporting layer 15 can ignite the smoke-producing layer 12 together with the ignition layer 11, and the ignition layer 11 can also increase the combustion speed, thereby accelerating the rate of smoke production.

[0055] In practical applications, the combustion-supporting layer 15 is gunpowder. After the ignition layer 11 is ignited, the ignition layer 11 first ignites the gunpowder, and then under the assistance of the gunpowder, the smoke-producing layer 12 is ignited and the smoke-producing layer 12 burns rapidly.

[0056] In some embodiments, the smoke-producing structure 10 further includes a sealing layer 16. The sealing layer 16 is connected between the outer heat-insulating layer 13 and the inner heat-insulating layer 14 to enclose a smoke-producing space with the outer heat-insulating layer 13 and the inner heat-insulating layer 14. The smoke-producing layer 12 and the ignition layer 11 are stacked in the smoke-producing space. Each first ventilation hole 131 and each second ventilation hole 141 communicate with the smoke-producing space. In this way, it is convenient to fix the smoke-producing layer 12, the combustion-supporting layer 15, and the ignition layer 11 in the smoke-producing space.

[0057] In practical applications, the sealing layer 16 has a melting state in which it melts to connect the smoke generation space and the outside. When the temperature of the component to be detected 200 is greater than the second preset temperature, the sealing layer 16 enters the melting state, the sealing layer 16 melts, and the smoke generation space is connected to the outside.

[0058] Among them, the first preset temperature is greater than the second preset temperature. That is to say, during the process of the temperature rise of the component to be detected 200 due to thermal runaway, before the ignition layer 11 is ignited, the sealing layer 16 will melt first, so that the smoke generation space is connected to the outside. Then, the ignition layer 11, the combustion-supporting layer 15, and the smoke generation layer 12 are ignited, and the smoke generated by the smoke generation layer 12 can be quickly discharged from the smoke generation space.

[0059] Specifically, the sealing layer 16 is a plastic film, and the second preset temperature is 85 degrees Celsius. Of course, in other embodiments, the sealing layer 16 can also be made of other materials, and the corresponding second preset temperature is other temperatures, but it needs to be lower than the first preset temperature.

[0060] In some embodiments, the smoke generation structure 10 further includes an adhesive layer. The adhesive layer is disposed on the surface of the ignition layer 11 facing away from the smoke generation layer 12 and is used to bond to the component to be detected 200, thereby realizing the connection between the ignition layer 11 and the component to be detected 200.

[0061] In practical applications, the adhesive layer is disposed on the side of the inner heat insulation layer 14 facing away from the ignition layer 11.

[0062] In some embodiments, the fire extinguishing device further includes a controller 40. The controller 40 is electrically connected to the fire extinguishing mechanism 30 and the smoke sensor 20. The controller 40 obtains the data detected by the smoke sensor 20, and then determines whether the component to be detected 200 has a thermal runaway according to the data. After determining that there is a thermal runaway, it controls the fire extinguishing mechanism 30 to spray a fire extinguishing agent on the component to be detected 200.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0064] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A detection mechanism, characterized in that, Comprising: A plurality of smoke generating structures, including an ignition layer, a smoke generating layer, a sealing layer, an outer heat insulation layer and an inner heat insulation layer. The ignition layer and the smoke generating layer are stacked, the ignition layer is used for connecting with a component to be detected, and when the temperature of the component to be detected is greater than a first preset temperature, the ignition layer can ignite the smoke generating layer, and the smoke generating layer is used for generating smoke after being ignited; The sealing layer is connected between the outer heat insulation layer and the inner heat insulation layer to enclose a smoke generating space with the outer heat insulation layer and the inner heat insulation layer, and the smoke generating layer and the ignition layer are stacked in the smoke generating space; The sealing layer has a melting state for communicating the smoke generating space and the outside; When the temperature of the component to be detected is greater than a second preset temperature, the sealing layer enters the melting state, and the first preset temperature is greater than the second preset temperature; A smoke sensor is arranged on one side of the component to be detected and is used for detecting the smoke generated by the smoke generating layer and the component to be detected.

2. The detection mechanism according to claim 1, wherein The outer heat insulation layer, the smoke generating layer and the ignition layer are sequentially stacked, and the outer heat insulation layer is provided with a plurality of first ventilation holes, and each first ventilation hole penetrates through the outer heat insulation layer along the arrangement direction of the outer heat insulation layer and the smoke generating layer.

3. The detection mechanism according to claim 2, characterized in that, The outer heat insulation layer, the smoke generating layer, the ignition layer and the inner heat insulation layer are sequentially stacked, the inner heat insulation layer is used for connecting with the component to be detected, and the inner heat insulation layer is provided with a plurality of second ventilation holes, and each second ventilation hole penetrates through the inner heat insulation layer along the arrangement direction of the ignition layer and the inner heat insulation layer.

4. The detection mechanism according to claim 3, characterized in that Each first ventilation hole and each second ventilation hole communicate with the smoke generating space.

5. The detection mechanism according to claim 1, wherein, Each smoke generating structure is used for connecting with a corresponding component to be detected.

6. The detection mechanism according to claim 1, characterized in that The smoke generating structure further includes a combustion assisting layer, and the combustion assisting layer is arranged between the ignition layer and the smoke generating layer; When the temperature of the component to be detected is greater than the first preset temperature, the ignition layer can ignite the combustion assisting layer and the smoke generating layer.

7. A fire extinguishing device, characterized in that, Comprising the detection mechanism according to any one of claims 1-6.

8. The fire extinguishing device according to claim 7, characterized in that, The fire extinguishing device further includes a fire extinguishing mechanism, and the fire extinguishing mechanism is electrically connected to the smoke sensor and is used for spraying a fire extinguishing agent to the component to be detected according to the detection information of the smoke sensor.

9. The fire extinguishing device according to claim 8, characterized in that, The fire extinguishing device further includes a controller, and the controller is electrically connected to the fire extinguishing mechanism and the smoke sensor.

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