CN115382129B - Active fire extinguishing material and fire extinguishing device made of same - Google Patents
Active fire extinguishing material and fire extinguishing device made of same Download PDFInfo
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- CN115382129B CN115382129B CN202210797770.8A CN202210797770A CN115382129B CN 115382129 B CN115382129 B CN 115382129B CN 202210797770 A CN202210797770 A CN 202210797770A CN 115382129 B CN115382129 B CN 115382129B
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- fire extinguishing
- temperature
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/004—Making of fire-extinguishing materials immediately before use for producing carbon-dioxide snow, carbon-dioxide ice, carbon-dioxide gas, carbon-dioxide liquid, or mixtures thereof
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
Abstract
The invention discloses an active fire extinguishing material and a fire extinguishing device made of the same, wherein the active fire extinguishing material comprises a base layer, an AC (alternating Current) foaming layer and a temperature sensing initiation layer which are sequentially arranged, and the AC foaming layer and the temperature sensing initiation layer are wrapped in the base layer; extinguishing device includes base plate, expansion plate, the first body and the second body that goes out a fire, and the expansion plate can buckle to the fixed part when temperature T, makes the second body that goes out a fire and the first body that goes out a fire carry out three-dimensional focus nature from different angles to same ignition and puts out a fire to improve the effect of putting out a fire greatly.
Description
Technical Field
The invention belongs to the technical field of fire fighting, and particularly relates to an active fire extinguishing material and a fire extinguishing device made of the material.
Background
Electric power is a basic energy source for social development, the quantity of equipment facilities of an electric power system is large, underground cable channels are distributed densely and are complicated, and electrical fire caused by the characteristics of the electric power can be ubiquitous and sometimes happen, so that the safe and reliable supply of the electric power is influenced. Because the electrical system is widely distributed and continuously operates for a long time, the electrical line is usually laid in a hidden place (such as equipment and a cable trench), and the fire alarm system is not easy to find in the initial stage of a fire and is not easy to observe by naked eyes. In case of fire, the electric power facilities may rapidly spread along the cable, and it is very difficult to extinguish the fire due to the charged characteristic. Meanwhile, the smoke evacuation device mainly occurs in buildings, people are dense, evacuation is difficult, smoke is not smoothly discharged, and serious accidents of crowd death and crowd injury are easily caused. Casualties, property loss and social concussion caused by fire are huge!
Although the existing fire extinguishing means can achieve the fire extinguishing effect, such as adopting a flame retardant material or adopting a foam extinguishing agent to extinguish fire, the fire extinguishing means has strong passivity, when adopting the flame retardant material, once the fire intensity exceeds the flame retardant effect of the flame retardant material, the fire extinguishing means cannot be controlled, and not all things in a power system can be made of the flame retardant material, and when adopting the foam extinguishing agent to extinguish fire, the fire is required to be early warned to occur, and a very long end feedback, namely reaction time is required, which is unfavorable for the fire control of the power system.
Therefore, there is a need for an alternative to existing fire extinguishing means to actively suppress a fire in an electrical power system to improve the efficiency of fire control in the electrical power system.
Disclosure of Invention
The present invention provides an active fire extinguishing material and a fire extinguishing device based on the material, which aims at the problems existing in the prior art.
The invention solves the technical problems through the following technical means:
the utility model provides an initiative fire extinguishing material, includes basic unit, AC foaming layer and the temperature sensing initiation layer that sets gradually, the basic unit is box-like, the basic unit is including AC foaming layer and temperature sensing initiation layer parcel, a plurality of through-holes have been seted up to one side that the basic unit is pressed close to the temperature sensing initiation layer.
A fire extinguishing apparatus is made of the active fire extinguishing material, and comprises:
a substrate;
the unfolding plate is provided with a fixing part and an unfolding part, the fixing part is fixedly connected with the substrate, the unfolding part is in non-connection fit with the substrate, and the unfolding part can be bent to the fixing part by alpha degrees when the temperature T is lower than the trigger temperature of the temperature sensing initiation layer;
a first fire extinguishing body fixedly installed on the fixing portion, the first fire extinguishing body being the active fire extinguishing material according to claim 1;
and a second fire extinguishing body installed on the exploding plate, the second fire extinguishing body being the active fire extinguishing material according to claim 1.
Further, the second fire extinguishing body is ejected away from the fixing portion along the plane of the unfolding portion when reaching the triggering temperature P of the temperature sensing initiation layer.
Furthermore, an air bag is installed on the substrate, the air bag is changed from a compressed state to an expanded state at the temperature T, the air bag comprises a shell and a bag body, one side of the shell is provided with an opening, the bag body is connected to the opening of the shell in a sealing mode, an AC foaming agent and a temperature-sensitive initiator are filled in the shell, the temperature-sensitive initiator is attached to the side of the AC foaming agent, the temperature-sensitive initiator penetrates through the side wall of the shell and extends to the outside, and the triggering temperature of the temperature-sensitive initiator is the temperature T.
Further, set up the mounting groove on the base plate, the gasbag inlays the dress in the mounting groove, the side of base plate still set up with the side opening of installation mounting groove UNICOM, the temperature sensing initiating agent passes through the side opening and exposes outside.
Furthermore, the unfolding portion is provided with a first enclosing plate and a second enclosing plate, the first enclosing plates are arranged at two ends of the second enclosing plate to form a containing groove, one side of the containing groove is provided with a notch for the second fire extinguishing body to pop up, and the cross section of each first enclosing plate is L-shaped.
Further, the inside cavity that has of second bounding wall, the cavity has the opening towards the storage tank, the opening part of cavity is provided with launches the board, install the spring that links to each other with launching the board in the cavity, it is compression state that the spring is when closing in the opening part to launch the board lid, the opening part of cavity is provided with the stopper, this stopper is including being the angled folded plate and filling the filler in folded plate bight space, the filler comprises AC foaming layering agent and temperature sensing initiating agent layering, the trigger temperature of temperature sensing initiating agent is temperature P in the filler.
Furthermore, the second fire extinguishing body and the second enclosing plate are fixed through magnetic attraction.
The beneficial effects of the invention are as follows: (1) According to the base layer, the AC foaming layer and the temperature-sensing initiation layer are wrapped to form a box shape, and a plurality of through holes are formed in one side, close to the temperature-sensing initiation layer, of the box shape, so that the generated fire extinguishing gas is directionally controlled, the generated gas is prevented from escaping, and partial gas cannot be aligned to a fire point to achieve a fire extinguishing effect; (2) The invention enables the second fire extinguishing body and the first fire extinguishing body to carry out three-dimensional focused fire extinguishing from different angles to the same ignition point, thereby greatly improving the fire extinguishing effect and avoiding the problem of incomplete isolation of fire extinguishing factors during unidirectional fire extinguishing; (3) The invention enables the second fire extinguishing body to be driven by fire extinguishing starting conditions to pop up along the pop-up direction, so that the second fire extinguishing body which is originally in compact layout is separated from the first fire extinguishing body, and the fire point is surrounded by the pop-up, thereby further generating the three-dimensional surrounding type fire extinguishing effect.
Drawings
FIG. 1 is a schematic view of a layered structure of an active fire extinguishing material;
FIG. 2 is a layout view of through holes in a box-shaped base layer;
FIG. 3 is a schematic view showing an installation state of the fire extinguishing apparatus;
FIG. 4 is a schematic view of a fire apparatus in a fire ready state;
FIG. 5 is a schematic view of the structure of the bladder;
FIG. 6 is a schematic view of the fire extinguishing apparatus in a fire extinguishing starting state;
fig. 7 is a schematic view of the internal structure of the second enclosing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figure 1, an active fire extinguishing material comprises a base layer 1, an AC foaming layer 2 and a temperature sensing initiation layer 3 which are sequentially arranged, wherein the base layer 1 is made of ceramic and plastic in a compounding mode, the AC foaming layer 2 is arranged on the base layer 1, the temperature sensing initiation layer 3 is arranged on the AC foaming layer 2, when the temperature of a high-voltage circuit rises to a trigger temperature abnormally, the temperature sensing initiation layer 3 triggers the AC foaming layer 2 to carry out redox reaction, a large amount of nitrogen and carbon dioxide are generated to dilute oxygen, simultaneously, the generated gas is combined with active groups in flame, the chain reaction of combustion can be rapidly cut off, a large amount of metal ions are decomposed in the reaction process, the combustion heat is rapidly absorbed, and fire extinguishing is realized.
The base layer 1 is prepared by mixing ceramic, plastic, monoglyceride and PVC glue in proportion and placing the mixture in a mould, for example, the mixture can be prepared by mixing the following components in proportion of 25:12:10:8, wherein the ceramic comprises one or more of silicon nitride, aluminum oxide and hexagonal boron nitride, and the plastic is composed of polyethylene and/or polyamide.
The AC foaming layer 2 is one or more of azodicarbonamide, antimony trioxide, hydrotalcite and magnesium hydroxide.
The temperature-sensing initiation layer 3 is one or more of magnesium, aluminum, lactose and melamine, the triggering temperature of the temperature-sensing initiation layer 3 is 300-400 ℃, in addition, the triggering temperature of the temperature-sensing initiation layer 3 can be controlled by controlling the mixture ratio of the components, for example, the lactose content in the temperature-sensing initiation layer 3 can be increased.
As a more specific structure of this embodiment, as shown in fig. 2, the AC foaming layer 2 and the temperature-sensitive triggering layer 3 are wrapped by the base layer 1 to form a box shape, and a plurality of through holes 4 are opened at a side of the box shape close to the temperature-sensitive triggering layer 3, so as to directionally control the generated fire extinguishing gas, and prevent the generated gas from escaping all around, so that a part of the gas cannot be directed at the fire point to achieve the fire extinguishing effect.
Example 2
The embodiment is based on the active fire extinguishing material of the embodiment, and provides a fire extinguishing device made of the material as a base.
As shown in fig. 3, the installation state of the fire extinguishing apparatus is schematically illustrated, the fire extinguishing apparatus can be directly installed on the housing of the electrical cabinet, and can be fixed by a sticking manner, or/and fixed by magnetic attraction. The fire extinguishing device comprises a base plate 100 and an unfolding plate 110 fixed on the base plate 100, wherein the unfolding plate 110 is provided with a fixed part 111 fixed on the base plate 100 and an unfolding part 112 attached to the base plate 100 in a non-connecting mode, the unfolding part 112 is provided with two unfolding parts 112 symmetrically arranged on two sides of the fixed part 111, a folding groove 113 facilitating the folding of the unfolding part 112 towards the fixed part 111 is formed in the joint of the unfolding part 112 and the fixed part 111, a first fire extinguishing body 210 is fixedly arranged on the fixed part 111, the first fire extinguishing body 210 is the active fire extinguishing material disclosed in embodiment 1, a base layer 1 is fixedly connected with the fixed part 111, a second fire extinguishing body 220 capable of being ejected is arranged on the unfolding part 112, the second fire extinguishing body 220 is also the active fire extinguishing material disclosed in embodiment 1, and the ejecting direction of the second fire extinguishing body 220 is the direction that the folding groove 113 is far away from the fixed part 111 along the plane of the unfolding part 112.
As shown in fig. 4, the schematic diagram of the fire extinguishing preparation state of the fire extinguishing apparatus is shown, in which the unfolding portion 112 is driven by the fire extinguishing preparation condition to bend to the fixing portion 111 by a certain angle, so that the fixing portion 111 and the unfolding portion 112 are unfolded at an angle, and in this state, the spraying direction of the fire extinguishing component of the second fire extinguishing body 220 mounted on the unfolding portion 112 can be changed, so that the second fire extinguishing body 220 and the first fire extinguishing body 210 perform three-dimensional focused fire extinguishing to the same fire point from different angles, thereby greatly improving the fire extinguishing effect, and avoiding the problem of incomplete isolation of fire extinguishing factors during one-way fire extinguishing, for example, during one-way fire extinguishing, the gas generated by fire extinguishing is easily covered incompletely to the fire point, resulting in poor fire extinguishing effect.
As shown in fig. 4, the airbag 310 mounted on the substrate 100 inflates and pops out the unfolding portion 112, when the electrical device is on fire, the temperature inside the cabinet rises due to the fire point, until the temperature inside the cabinet reaches the inflation condition of the airbag 310, the airbag 310 inflates, and as the airbag 310 inflates, the unfolding portion 112 pops out by the airbag 310 to form a certain angle with the fixing portion 111, when the state is completed, the temperature inside the cabinet does not reach the starting temperature of the second fire extinguishing member 220 and the first fire extinguishing member 210, and as the temperature inside the cabinet continues to rise, the second fire extinguishing member 220 and the first fire extinguishing member 210 trigger fire extinguishing.
As shown in fig. 5, which is a schematic structural diagram of an airbag 310, the airbag 310 includes a housing 311 and a bladder 312 in a compressed state, one side of the housing 311 is open, the bladder 312 is connected to the opening of the housing 311 in a sealed manner, an AC foaming agent 313 and a temperature sensitive initiator 314 are filled in the housing 311, the temperature sensitive initiator 314 is attached to the side of the AC foaming agent 313, the temperature sensitive initiator 314 extends to the outside through the side wall of the housing 311, and the triggering temperature of the temperature sensitive initiator 314 is set to be lower than the triggering temperature of the temperature sensitive initiating layer 3 of the second fire extinguishing body 220 and the first fire extinguishing body 210, for example, 200 to 250 ℃, so that the airbag 310 can be activated with the first fire extinguishing body 210 before the second fire extinguishing body 220, and the bladder 312 is filled with gas generated during the reaction of the AC foaming agent 313.
The bag body 312 may be made of a composite material of aluminum foil and silicone, and the outer portion is configured as a silicone film wrapping the aluminum foil inside.
To facilitate the installation and fixation of the airbag 310, an installation groove 101 is opened in the substrate 100 for fitting the airbag 310 therein. Meanwhile, a side hole 102 communicated with the mounting groove 101 is further formed in the side of the substrate 100 to allow the temperature sensing initiator 314 to extend and be exposed, so that the temperature inside the electric cabinet can be better sensed, and a temperature sensing initiation effect can be better achieved.
To facilitate limiting the deployment angle of the deployment section 112, the deployment section 112 and the airbag 310 may be connected, for example, adhesively bonded.
As shown in fig. 6, it is a schematic diagram of a fire extinguishing starting state of the fire extinguishing apparatus, in which the second fire extinguishing body 220 is driven by a fire extinguishing starting condition to pop up in the pop-up direction, so that the second fire extinguishing body 220, which is originally in a compact layout, is separated from the first fire extinguishing body 210, and a fire point is surrounded by the pop-up, thereby further generating a three-dimensional surrounding fire extinguishing effect.
As shown in fig. 6, the unfolding portion 112 has a first enclosing plate 410 and a second enclosing plate 420, the first enclosing plate 410 is symmetrically disposed at two ends of the second enclosing plate 420, and the first enclosing plate 410 and the second enclosing plate 420 are connected to form a receiving groove having a notch at one side, the receiving groove is used for placing the second fire extinguishing body 220, the notch of the receiving groove is used for enabling the second fire extinguishing body 220 to slide and pop up along the first enclosing plate 410, and the first enclosing plate 410 is "L" shaped to limit the second fire extinguishing body 220.
As shown in fig. 7, the second enclosing plate 420 has a cavity 421 therein, and an opening is formed at a side facing the receiving groove, an ejection plate 422 is installed at the opening, a spring 423 connected to the ejection plate 422 is installed in the cavity 421, the spring 423 is in a compressed state when the ejection plate 422 covers the opening, a limit block 430 is disposed at the opening of the cavity 421, the limit block 430 is composed of a corner-shaped folding plate 431 and an AC foaming layer agent and a temperature sensitive initiator filled in a corner space of the folding plate 431, a trigger temperature of the temperature sensitive initiator is close to that of the second fire extinguisher 220, that is, when the internal temperature of the cabinet reaches the trigger temperature, the AC foaming layer agent and the temperature sensitive initiator are consumed by reaction, so that the corner space of the folding plate 431 is exposed, and the folding plate 431 can be bent due to loss of internal limitation, so that the spring 423 can eject the ejection plate 422 and further eject the second fire extinguisher 220.
In order to avoid the slipping of the second fire extinguishing body 220 below when the fire extinguishing apparatus is vertically arranged, the permanent magnet can be embedded on the base layer 1 and the second enclosing plate 420, the auxiliary fixation is carried out through magnetic attraction, and the magnetic attraction can be damaged by the spring 423 with larger elastic potential energy, so that the influence on the ejection of the second fire extinguishing body 220 can be avoided.
In addition, the structure of the present embodiment in which two second extinguishing members 220 are associated with one first extinguishing member 210 may be installed in a horizontal position or in a vertical position; in addition, a structure that one first fire extinguishing body 210 is matched with one second fire extinguishing body 220 can be adopted, or a structure that one first fire extinguishing body 210 is matched with four or three second fire extinguishing bodies 220 can be adopted, so that only two outer sides of the first fire extinguishing body 210 need to be additionally provided with corresponding structures.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "...," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. Fire extinguishing apparatus, characterized in that includes:
a substrate (100);
an expansion plate (110) having a fixed part (111) and an expansion part (112), wherein the fixed part (111) is fixedly connected with the substrate (100), the expansion part (112) is non-connectively attached with the substrate (100), and the expansion part (112) bends to the fixed part (111) by alpha degrees when the temperature T is lower than the trigger temperature of the temperature sensing initiation layer (3);
the first fire extinguishing body (210) is fixedly arranged on the fixing part (111), and the first fire extinguishing body (210) is made of active fire extinguishing materials;
and a second fire extinguishing body (220) installed on the exploding plate (110), the second fire extinguishing body (220) being an active fire extinguishing material;
the second fire extinguishing body (220) is popped out along the plane of the unfolding part (112) far away from the fixing part (111) when reaching the triggering temperature P of the temperature sensing initiation layer (3);
the airbag is characterized in that an airbag (310) is mounted on the substrate (100), the airbag (310) is converted from a compression state to an expansion state at a temperature T, the airbag (310) comprises a shell (311) and a bag body (312), one side of the shell (311) is provided with an opening, the bag body (312) is hermetically connected to the opening of the shell (311), an AC foaming agent (313) and a temperature-sensitive initiator (314) are filled in the shell (311), the temperature-sensitive initiator (314) is attached to the side of the AC foaming agent (313), the temperature-sensitive initiator (314) penetrates through the side wall of the shell (311) and extends to the outside, and the triggering temperature of the temperature-sensitive initiator (314) is the temperature T;
the unfolding part (112) is provided with a first enclosing plate (410) and a second enclosing plate (420), the two first enclosing plates (410) are arranged at two ends of the second enclosing plate (420) to form an accommodating groove, one side of the accommodating groove is provided with a notch for the second fire extinguishing body (220) to pop up, and the section of each first enclosing plate (410) is L-shaped;
a cavity (421) is formed in the second enclosing plate (420), the cavity (421) is provided with an opening facing the accommodating groove, an ejection plate (422) is arranged at the opening of the cavity (421), a spring (423) connected with the ejection plate (422) is installed in the cavity (421), the spring (423) is in a compressed state when the ejection plate (422) covers the opening, a limiting block (430) is arranged at the opening of the cavity (421), the limiting block (430) comprises a corner-shaped folding plate (431) and a filler filled in a corner space of the folding plate (431), the filler is formed by layering an AC foaming agent and a temperature-sensing initiator, and the triggering temperature of the temperature-sensing initiator in the filler is P;
initiative fire extinguishing materials is including basic unit (1), AC foaming layer (2) and the temperature sensing that sets gradually trigger layer (3), its characterized in that, basic unit (1) is box-like, including basic unit (1) wraps up AC foaming layer (2) and temperature sensing trigger layer (3), a plurality of through-holes (4) have been seted up to one side that basic unit (1) are pressed close to temperature sensing trigger layer (3).
2. The fire extinguishing apparatus according to claim 1, wherein the base plate (100) is provided with an installation groove (101), the airbag (310) is embedded in the installation groove (101), a side hole communicating with the installation groove (101) is further formed in a side of the base plate (100), and the temperature sensitive initiator (314) is exposed to the outside through the side hole.
3. A fire extinguishing apparatus according to claim 1, wherein the second extinguishing body (220) is fixed to the second enclosing plate (420) by magnetic attraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797770.8A CN115382129B (en) | 2022-07-06 | 2022-07-06 | Active fire extinguishing material and fire extinguishing device made of same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797770.8A CN115382129B (en) | 2022-07-06 | 2022-07-06 | Active fire extinguishing material and fire extinguishing device made of same |
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| CN115382129A CN115382129A (en) | 2022-11-25 |
| CN115382129B true CN115382129B (en) | 2023-04-18 |
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| CN115944863B (en) * | 2023-02-01 | 2023-09-19 | 哈尔滨天翊煤矿救援装备有限公司 | Mining regional automatic fire extinguishing device |
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| JP2005323811A (en) * | 2004-05-14 | 2005-11-24 | Hochiki Corp | Fire extinguishing appliance |
| CN109876351A (en) * | 2019-04-02 | 2019-06-14 | 江苏辰泰轨道交通科技有限公司 | From fire extinguishing insulating materials and the block type fire extinguishing system based on the material |
| CN214181533U (en) * | 2020-12-08 | 2021-09-14 | 中国民航大学 | Self-explosion fire extinguishing ball |
| CN113107331A (en) * | 2021-04-16 | 2021-07-13 | 张宇琼 | Fire prevention heat preservation type aluminium alloy for construction |
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