Fire extinguishing device for power distribution cabinet

Abstract

The utility model provides a fire extinguishing device for a power distribution cabinet. The fire extinguishing device comprises a shell formed by buckling a first half shell and a second half shell or a shell formed by buckling the first half shell, the second half shell and one or more middle shells positioned between the first half shell and the second half shell, an extending isolation plate is arranged on one surface, facing the second half shell, of the first half shell; or extending isolation plates are arranged on one surface, facing the middle shell, of the first half shell and one surface, facing the other middle shell or / and the second half shell, of the middle shell; an inner cavity of the shell is divided into a first cavity body and a second cavity body communicated with the first cavity body through a separation plate, and the shell is provided with an air outlet communicated with the second cavity body or each second cavity body; the first cavity is provided with hot aerosol, and the second cavity is provided with cold aerosol; a starting line is further included; the middle shell is provided with an ignition hole. The device has the advantages that the structure is simple, superposition can be carried out according to the fire extinguishing volume, safety and reliability are achieved, a hot aerosol spraying medium is effectively cooled, and the fire extinguishing effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fire safety equipment, and particularly relates to a power distribution cabinet fire extinguishing device. BACKGROUND

[0002] The existing hot gas aerosol fire extinguishing principle is through solid phase oxidation-reduction reaction to form dense aerosol smoke composed of N, a small amount of CO, H2O, carbonates, metal oxides and the like, rapidly fill the space, utilize the gas phase composition dilution, oxygen isolation effect and heat absorption decomposition cooling effect and chemical inhibition effect to extinguish the flame.

[0003] The hot gas aerosol is generated by high-temperature combustion reaction, and the reaction process is all exothermic reaction. The hot aerosol smoke needs to be cooled before being released to the protected space for fire extinguishing. If not cooled or the cooling technology is unreasonable, the high-temperature flame and residues in the combustion reaction will be accompanied by the aerosol from the generator to the outside, which is easy to cause secondary fire in the protection area. Therefore, effective cooling technology is the key to improve the fire extinguishing efficiency and avoid secondary fire accidents. There are three ways to cool the hot gas aerosol, physical cooling, chemical external cooling and chemical internal cooling. Physical cooling is to use some materials with large heat capacity, or to set baffles and labyrinth flow channels in the device to remove residual sparks and cool down. This method only distributes the heat evenly, has a cooling effect in the initial stage of spraying, and loses the effect after temperature balance, which cannot fundamentally solve the problem. Chemical internal cooling is to add a cooling agent or a material that can easily absorb heat and decompose gasification in the reaction agent to reduce the reaction temperature, but this scheme will affect the stability and reaction speed of the oxidation-reduction reaction.

[0004] At the same time, the existing fire extinguishing device is an independent individual, which needs to be installed in multiple in some occasions, and the starting lines of each device need to be connected together manually, which has many uncertainties and is easy to cause some fire extinguishing devices not to trigger. UTILITY MODEL CONTENTS

[0005] Based on the above problems, the utility model aims to provide a power distribution cabinet fire extinguishing device with simple structure, which can be stacked according to the amount of fire extinguishing body, is safe and reliable, can effectively cool the hot gas aerosol spraying medium and improve the fire extinguishing effect.

[0006] In view of the above problems, the technical scheme is provided as follows: a power distribution cabinet fire extinguishing device, comprising a shell formed by buckling a first half shell and a second half shell or a shell formed by buckling the first half shell, the second half shell and one or more middle shells located between the first half shell and the second half shell; one side of the first half shell facing the second half shell is provided with an extended isolation plate; or one side of the first half shell facing the middle shell and one side of the middle shell facing the other middle shell or / and the second half shell are provided with an extended isolation plate; the inner cavity of the shell is isolated into a first cavity and a second cavity in communication with the first cavity by the isolation plate, and the shell is provided with an air outlet in communication with the second cavity or each second cavity; the first cavity is provided with a hot aerosol, and the second cavity is provided with a cold aerosol; further comprising a starting wire, the starting wire passes through the second cavity from the first cavity and is exposed outside the shell; the middle shell is provided with an ignition hole for passing through an auxiliary wire connected with the starting wire to realize ignition of adjacent inner cavities in the shell.

[0007] The utility model further sets up, the second cavity and air outlet are two groups, symmetry distribution in first cavity both sides;The starting wire passes through two second cavities from first cavity and is exposed outside the shell.

[0008] The utility model further sets up, two second cavities, air outlet and exposed starting wire are arranged on the shell in up and down or left and right or front and back.

[0009] The utility model further sets up, further comprising third cavity between air outlet and second cavity, air outlet is communicated with second cavity through third cavity;The third cavity is equipped with heat absorbing medium;The starting wire passes through second cavity, third cavity from first cavity and is exposed outside the shell.

[0010] The utility model further sets up, the heat absorbing medium is ceramic particle.

[0011] The utility model further sets up, the second half shell is equipped with the top cap that extends to first half shell or middle shell direction, and the middle shell is equipped with the top cap that extends to first half shell or another middle shell direction.

[0012] The utility model further sets up, the ignition hole is located at the air outlet position.

[0013] The utility model further sets up, the starting wire is outworn from air outlet to the shell outside.

[0014] The utility model further sets up, the shell contour is same with circuit breaker or air switch contour;The shell bottom is equipped with guide rail groove and locking piece.

[0015] The utility model further sets up, the starting wire is heat sensitive wire or / and electronic ignition head.

[0016] The utility model further sets up, still include the detection head installed in the first cavity.

[0017] The utility model further sets up, the shell is flame -retardant nylon material.

[0018] The utility model discloses the beneficial effect:

[0019] 1, the starting line is used for igniting hot gas aerosol, and the spray medium generated by the hot gas aerosol is cooled by the cold gas aerosol, and the cold gas aerosol also generates spray medium and is sprayed from the air outlet, so that the cooling and the fire extinguishing effect, fire extinguishing area / range are improved, so that the occurrence of secondary fire accidents is avoided under the premise that the stability and reaction speed of the oxidation-reduction reaction are not reduced; Because the number of fire extinguishing devices arranged is different due to different distribution box volumes, the shell formed by the first half shell and the second half shell can be directly used as a fire extinguishing device in a small volume distribution box, and the shell formed by the first half shell, the middle shell and the second half shell can be used to increase the fire extinguishing effect for a slightly larger volume distribution box, and the shell formed by the first half shell, multiple middle shells and the second half shell can be used to further increase the fire extinguishing effect for some further increased volume distribution boxes; For manufacturers, the assembly of different specifications of products can be realized by only stacking the number of middle shells during production, thereby effectively improving production efficiency, simplifying production process and reducing production cost; Meanwhile, the problem that individual starting lines cannot be ignited due to manual parallel connection is also avoided.

[0020] 2, the cold gas aerosol generates spray medium while absorbing the temperature of the hot gas aerosol spray medium, and the two are mixed and further cooled by the heat absorbing medium of the third cavity to ensure that the temperature of the air outlet can be as low as possible;

[0021] 3, the ceramic particles generate a labyrinth effect while absorbing heat, and block residual sparks;

[0022] 4, the top cover can compensate for the strength and rigidity of the side of the second half shell or the middle shell without the isolation plate, and can reduce the interference of the external structure on the side of the first half shell and the middle shell with the isolation plate, thereby improving the assembly convenience of the hot gas aerosol, the cold gas aerosol, the starting line and the auxiliary line;

[0023] 5, when installed in the power distribution cabinet, the shape is consistent with the circuit breaker or the air switch; The guide rail groove and the locking piece are used for adapting and clamping with the guide rail in the distribution box.

[0024] 6, the thermosensitive wire is a physical temperature starting probe, which is ignited when the ambient temperature reaches a certain threshold value or contacts an open flame, and ignites the hot gas aerosol, which is suitable for conventional or high magnetic field environments, and avoids false triggering of the electronic ignition head; The electronic ignition head can be remotely ignited.

[0025] 7, the detection head is used for detecting temperature to determine whether a fire occurs. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is first perspective view schematic diagram of the utility model 1P.

[0027] Figure 2 It is second perspective view schematic diagram of the utility model 1P.

[0028] Figure 3 It is first perspective view partial explosion schematic diagram of the utility model 1P.

[0029] Figure 4 It is second perspective view partial explosion schematic diagram of the utility model 1P.

[0030] Figure 5 It is first perspective view overall explosion schematic diagram of the utility model 1P.

[0031] Figure 6 It is second perspective view overall explosion schematic diagram of the utility model 1P.

[0032] Figure 7 It is first perspective view schematic diagram of the utility model 2P.

[0033] Figure 8 It is second perspective view schematic diagram of the utility model 2P.

[0034] Figure 9 It is first perspective view partial explosion schematic diagram of the utility model 2P.

[0035] Figure 10 It is second perspective view partial explosion schematic diagram of the utility model 2P.

[0036] Figure 11 It is first perspective view overall explosion schematic diagram of the utility model 2P.

[0037] Figure 12 It is second perspective view overall explosion schematic diagram of the utility model 2P.

[0038] Figure 13 It is first perspective view schematic diagram of the utility model 3P.

[0039] Figure 14 It is second perspective view schematic diagram of the utility model 3P.

[0040] Figure 15 It is first perspective view partial explosion schematic diagram of the utility model 3P.

[0041] Figure 16 It is the second perspective partial explosion perspective structural schematic view of the utility model 3P.

[0042] Figure 17 It is the right view structural schematic view of the utility model middle shell.

[0043] The meaning of the reference numeral in the drawing: 10 - first half shell;20 - second half shell;30 - middle shell;31 - ignition hole;40 - isolation plate;41 - first cavity;42 - second cavity;43 - gas outlet;44 - third cavity;50 - hot aerosol;60 - cold aerosol;70 - starting line;71 - auxiliary line;80 - heat absorption medium;90 - top cover;100 - guide rail groove;110 - locking piece. DETAILED DESCRIPTION

[0044] The specific implementation of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0045] Reference Figures 1 to 17 As Figures 1 to 17 shown in a kind of switchgear fire extinguishing device, including the shell of first half shell 10 and second half shell 20 buckle or including the shell of first half shell 10, second half shell 20 and one or more middle shell 30 between them buckle;The side of the first half shell 10 towards second half shell 20 is provided with extended isolation plate 40;Or the side of first half shell 10 towards middle shell 30 and the side of middle shell 30 towards another middle shell 30 or / and second half shell 20 is provided with extended isolation plate 40;The inner cavity of the shell is isolated into first cavity 41 by isolation plate 40, and second cavity 42 in communication with first cavity 41, the shell is provided with gas outlet 43 in communication with second cavity 42 or each second cavity 42;The first cavity 41 is provided with hot aerosol 50, and the second cavity 42 is provided with cold aerosol 60;It further includes starting line 70, and the starting line 70 is from first cavity 41, passes through second cavity 42 and is exposed to the shell;The middle shell 30 is provided with auxiliary line 71 for passing through and connected with starting line 70, to realize the ignition hole 31 of adjacent inner cavity ignition in the shell.

[0046] In the structure, the starting line 70 is used to ignite the hot gas aerosol 50, and the spray medium generated by the hot gas aerosol 50 is cooled by the cold gas aerosol 60, and at the same time, the cold gas aerosol 60 also generates spray medium and is sprayed from the gas outlet 43, so as to achieve the effect of cooling and improving the fire extinguishing effect and area / range, thereby avoiding the occurrence of secondary fire accidents without reducing the stability and reaction speed of the oxidation-reduction reaction; due to different volumes of distribution boxes, the number of fire extinguishing devices arranged is different, and in a small volume distribution box, the shell formed by the first half shell 10 and the second half shell 20 can be directly used as a fire extinguishing device, for a slightly larger volume distribution box, the shell formed by the first half shell 10, the middle shell 30 and the second half shell 20 can be used to increase the fire extinguishing effect, and for some further increased volume distribution boxes, the shell formed by the first half shell 10, multiple middle shells 30 and the second half shell 20 can be used to further increase the fire extinguishing effect; for the manufacturer, only the number of middle shells 30 needs to be stacked during production to realize the assembly of different specifications of products, effectively improve the production efficiency, simplify the production process and reduce the production cost; at the same time, it also avoids the problem that individual starting lines 70 cannot be ignited due to manual parallel connection.

[0047] In the embodiment, the second cavities 42 and the gas outlets 43 are both two groups and symmetrically distributed on both sides of the first cavity 41; the starting line 70 passes through the two second cavities 42 from the first cavity 41 and is exposed on the shell.

[0048] In the structure, the spray medium can be sprayed in two directions to improve the coverage range.

[0049] In the embodiment, the two groups of second cavities 42 and gas outlets 43 and the exposed starting line 70 are arranged on the shell in an up-down or left-right or front-back manner.

[0050] In the structure, the direction of the gas outlet 43 is selected according to the installation position, and the up-down arrangement is preferred.

[0051] In the embodiment, a third cavity 44 is further arranged between the gas outlet 43 and the second cavity 42, the gas outlet 43 is communicated with the second cavity 42 through the third cavity 44; the third cavity 44 is provided with a heat absorbing medium 80; the starting line 70 passes through the second cavity 42 and the third cavity 44 from the first cavity 41 and is exposed on the shell.

[0052] In the structure, the cold gas aerosol 60 absorbs the temperature of the spray medium of the hot gas aerosol 50 at the same time, and itself generates spray medium, and after mixing, the spray medium is further cooled by the heat absorbing medium 80 of the third cavity 44 to ensure that the temperature of the gas outlet 43 can be as low as possible.

[0053] In the embodiment, the heat absorbing medium 80 is a ceramic particle.

[0054] In the structure, the ceramic particles absorb heat and produce a labyrinth effect to block the residual sparks.

[0055] In the embodiment, the second half shell 20 is provided with a top cover 90 extending towards the first half shell 10 or the middle shell 30, and the middle shell 30 is provided with a top cover 90 extending towards the first half shell 10 or another middle shell 30.

[0056] In the structure, the top cover 90 can compensate for the strength and rigidity of the side of the second half shell 20 or the middle shell 30 without the isolation plate 40, and can reduce the interference of the external structure on the side of the first half shell 10 and the middle shell 30 with the isolation plate 40, thereby improving the assembly convenience of the hot aerosol 50, the cold aerosol 60, the starting wire 70, the auxiliary wire 71, and the heat-absorbing medium 80.

[0057] In the embodiment, the ignition hole 31 is located at the air outlet 43.

[0058] In the structure, the starting wire 70 ignites each auxiliary wire 71 when it burns to the air outlet 43.

[0059] In the embodiment, the starting wire 70 extends out of the air outlet 43 to the outside of the shell.

[0060] In the structure, the starting wire 70 can be provided with one or two or more wires as needed.

[0061] In the embodiment, the shell profile is the same as that of a circuit breaker or an air switch; the bottom of the shell is provided with a guide rail groove 100 and a locking piece 110.

[0062] In the structure, it is ensured that the shell is installed in a power distribution cabinet and matches the shape of a circuit breaker or an air switch; the guide rail groove 100 and the locking piece 110 are used to adapt to and engage with the guide rail in the distribution box.

[0063] In the embodiment, the starting wire 70 is a heat-sensitive wire or / and an electronic ignition head (optional, not shown in the figure).

[0064] In the structure, the heat-sensitive wire is a physical temperature starting probe, which is ignited when the ambient temperature reaches a certain threshold or when it is in contact with an open flame, and ignites the hot aerosol 50, which is suitable for conventional or high-magnetic-field environments to avoid false triggering of the electronic ignition head (optional, not shown in the figure); the electronic ignition head (optional, not shown in the figure) can be remotely ignited.

[0065] In the embodiment, a detection head (optional, not shown in the figure) is also installed in the first cavity 41.

[0066] In the structure, the detection head (optional, not shown in the figure) is used to detect the temperature to determine whether a fire occurs.

[0067] In this embodiment, the shell is made of flame-retardant nylon material.

[0068] In the above structure, the occurrence of spontaneous combustion of the shell due to excessively high temperature when the hot gas aerosol 50 is sprayed can be effectively avoided.

[0069] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the ordinary technical personnel in the art, without departing from the technical principles of the present application, under the premise of, can also make a number of improvements and variations, the above assumptions of these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A power distribution cabinet fire extinguishing apparatus, characterized by: The shell comprises a first half shell and a second half shell, or a first half shell, a second half shell and one or more middle shells between the two, the first half shell is provided with an extended isolation plate on the side facing the second half shell, or the first half shell is provided with an extended isolation plate on the side facing the middle shell, or the middle shell is provided with an extended isolation plate on the side facing the other middle shell or / and the second half shell, the inner cavity of the shell is separated into a first cavity and a second cavity in communication with the first cavity by the isolation plate, the shell is provided with an air outlet in communication with the second cavity or each second cavity, the first cavity is provided with a hot gas aerosol, and the second cavity is provided with a cold gas aerosol, and the shell further comprises a starting wire, which passes through the second cavity from the first cavity and is exposed outside the shell, the middle shell is provided with an ignition hole for passing through an auxiliary wire connected to the starting wire to achieve ignition of adjacent cavities in the shell.

2. A power distribution cabinet fire extinguishing apparatus according to claim 1, wherein: The second cavity and the air outlet are two groups, symmetrically distributed on both sides of the first cavity, and the starting wire passes through the two second cavities from the first cavity and is exposed outside the shell.

3. A power distribution cabinet fire extinguishing apparatus according to claim 2, wherein: The two groups of second cavities, air outlets and exposed starting wires are arranged in an up-down or left-right or front-back manner on the shell.

4. The power distribution cabinet fire extinguishing device according to claim 1 or 2 or 3, characterized in that: The shell further comprises a third cavity between the air outlet and the second cavity, the air outlet is in communication with the second cavity through the third cavity, the third cavity is provided with a heat-absorbing medium, and the starting wire passes through the second cavity and the third cavity from the first cavity and is exposed outside the shell.

5. The power distribution cabinet fire extinguishing apparatus of claim 1, wherein: The second half shell is provided with a top cover extending towards the first half shell or the middle shell, and the middle shell is provided with a top cover extending towards the first half shell or the other middle shell.

6. A power distribution cabinet fire extinguishing apparatus according to claim 1, wherein: The ignition hole is located at the position of the air outlet.

7. The power distribution cabinet fire extinguishing apparatus of claim 1, wherein: The starting wire passes out of the air outlet to the outside of the shell.

8. The power distribution cabinet fire extinguishing apparatus of claim 1, wherein: The shell profile is the same as that of a circuit breaker or an air switch, and the bottom of the shell is provided with a guide rail groove and a locking piece.

9. The power distribution cabinet fire extinguishing apparatus of claim 1, wherein: The starting wire is a heat-sensitive wire or / and an electronic ignition head.

10. The power distribution cabinet fire extinguishing apparatus of claim 1, wherein: The shell further comprises a detection head installed in the first cavity.

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