CN210971560U - Device for inhibiting flame propagation of pipeline - Google Patents
Device for inhibiting flame propagation of pipeline Download PDFInfo
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- CN210971560U CN210971560U CN201921470697.3U CN201921470697U CN210971560U CN 210971560 U CN210971560 U CN 210971560U CN 201921470697 U CN201921470697 U CN 201921470697U CN 210971560 U CN210971560 U CN 210971560U
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- shell
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- butt joint
- propagation
- pipeline
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Abstract
The utility model relates to a restrain device that pipeline flame propagated, including first casing, second casing and back-fire relief unit. The first shell and the second shell are both provided with a pipeline connecting port and a butt joint port; the butt joint ports of the first shell and the second shell are in butt joint and fixed connection, so that the first shell and the second shell form a cavity structure; the fire retardant unit is arranged in the inner cavity of the cavity structure and is of a metal honeycomb structure. The utility model discloses connect in series in aircraft fuel tank pipeline, quench the phenomenon when passing through narrow passageway based on flame, play the inhibitory action to the propagation of flame.
Description
Technical Field
The utility model belongs to civil aviation lightning protection technology relates to a device that restraines pipeline flame propagation.
Background
At present, the protection technology of civil aviation for lightning ignition mainly comprises the following steps: (1) and (7) enclosing. The netted foam material is filled in the fuel tank, so that the combustion is limited to a local part, and the structural damage caused by overlarge gas pressure in the fuel tank is prevented. (2) And (6) filling. The fuel tank is filled with the metal mesh material with good heat conductivity to rapidly reduce the temperature of fuel oil and extinguish flame,
the disadvantages of the lightning ignition protection technology are that: occupies the internal space of the fuel tank, has larger weight, and is easy to peel off debris to block a fuel pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: a pipeline type flame suppression structure is provided to meet the requirements of civil aviation lightning protection.
The technical scheme of the utility model is that: the device for inhibiting the propagation of the flame in the pipeline comprises a first shell, a second shell and a fire retardant unit;
the first shell and the second shell are both provided with a pipeline connecting port and a butt joint port;
the butt joint ports of the first shell and the second shell are in butt joint and fixed connection, so that the first shell and the second shell form a cavity structure;
the fire retardant unit is filled in the inner cavity of the cavity structure and is of a metal honeycomb structure.
Further, a sealing ring is arranged between the butt joint ports of the first shell and the second shell.
Further, the wall thickness of each cell of the metal honeycomb structure is 0.02 mm.
Further, the material of the metal honeycomb structure is aluminum alloy, preferably L F6 aluminum alloy.
Furthermore, the aperture of the metal honeycomb structure is 2 mm-3 mm.
The utility model discloses connect in series in aircraft fuel tank pipeline, quench the phenomenon when passing through narrow passageway based on flame, play the inhibitory action to the propagation of flame.
The shell has high strength and high anti-explosion capability and can resist deflagration or detonation impact caused by thunder, and the fire-retardant unit is the core of the flame suppression device and is of a metal honeycomb structure, as shown in figure 2. The flame propagation inhibiting device is characterized by being installed in a fuel tank pipeline of an airplane, and inhibiting the flame propagation based on the quenching phenomenon when the flame passes through a narrow channel.
The working principle of the invention is as follows:
when the flame propagates in the narrow passage, if the diameter of the slit passage is small enough, the flame will automatically extinguish after propagating a certain distance in the slit passage. The metal mesh fire-retardant unit can allow gas or liquid to pass through, and simultaneously rapidly absorb heat generated by combustion to extinguish flame.
The utility model has the advantages that: the flame-retardant fuel tank is installed in a fuel system pipeline, can effectively inhibit flame propagation, and has the advantages of small volume, light weight, convenience in disassembly and assembly and no occupation of fuel tank space.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a honeycomb view of the fire retardant unit of the present invention;
wherein: 1 a first shell, 2 fire retardant units, 3 a second shell and 4 sealing rings.
Detailed Description
The present invention is described in further detail below.
Example 1, and with reference to fig. 1-2, there is provided an apparatus for suppressing the spread of a pipe flame, comprising a first housing, a second housing, and a firestop unit;
the first shell and the second shell are both provided with a pipeline connecting port and a butt joint port;
the butt joint ports of the first shell and the second shell are in butt joint and fixed connection, so that the first shell and the second shell form a cavity structure;
the fire retardant unit is filled in the inner cavity of the cavity structure and is of a metal honeycomb structure.
And a sealing ring is arranged between the butt joint ports of the first shell and the second shell.
The wall thickness of each honeycomb hole of the metal honeycomb structure is 0.02 mm.
The metal honeycomb structure is made of aluminum alloy.
The aperture of the metal honeycomb structure is 2 mm.
Example 2, and with reference to fig. 1-2, there is provided an apparatus for suppressing the spread of a pipe flame, comprising a first housing, a second housing, and a firestop unit;
the first shell and the second shell are both provided with a pipeline connecting port and a butt joint port;
the butt joint ports of the first shell and the second shell are in butt joint and fixed connection, so that the first shell and the second shell form a cavity structure;
the fire retardant unit is filled in the inner cavity of the cavity structure and is of a metal honeycomb structure.
And a sealing ring is arranged between the butt joint ports of the first shell and the second shell.
The wall thickness of each honeycomb hole of the metal honeycomb structure is 0.02 mm.
The material of the metal honeycomb structure is L F6 aluminum alloy.
The aperture of the metal honeycomb structure is 3 mm.
Claims (6)
1. An apparatus for suppressing propagation of a flame in a pipe, comprising: the fire-retardant device comprises a first shell, a second shell and a fire-retardant unit;
the first shell and the second shell are both provided with a pipeline connecting port and a butt joint port;
the butt joint ports of the first shell and the second shell are in butt joint and fixed connection, so that the first shell and the second shell form a cavity structure;
the fire retardant unit is filled in the inner cavity of the cavity structure and is of a metal honeycomb structure.
2. An apparatus for suppressing the propagation of a pipe flame as defined in claim 1, wherein: the wall thickness of each honeycomb hole of the metal honeycomb structure is 0.02 mm.
3. An apparatus for suppressing the propagation of a pipe flame as defined in claim 1, wherein: the metal honeycomb structure is made of aluminum alloy.
4. The device for suppressing the propagation of a pipe flame of claim 3, wherein the metal honeycomb structure is made of L F6 aluminum alloy.
5. An apparatus for suppressing the propagation of a pipe flame as defined in claim 1, wherein: the aperture of the metal honeycomb structure is 2 mm-3 mm.
6. An apparatus for suppressing the propagation of a pipe flame as defined in claim 1, wherein: and a sealing ring is arranged between the butt joint ports of the first shell and the second shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470697.3U CN210971560U (en) | 2019-09-05 | 2019-09-05 | Device for inhibiting flame propagation of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470697.3U CN210971560U (en) | 2019-09-05 | 2019-09-05 | Device for inhibiting flame propagation of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210971560U true CN210971560U (en) | 2020-07-10 |
Family
ID=71441282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921470697.3U Active CN210971560U (en) | 2019-09-05 | 2019-09-05 | Device for inhibiting flame propagation of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210971560U (en) |
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2019
- 2019-09-05 CN CN201921470697.3U patent/CN210971560U/en active Active
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