CN108014438B - Combined flame arrester - Google Patents
Combined flame arrester Download PDFInfo
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- CN108014438B CN108014438B CN201711287672.5A CN201711287672A CN108014438B CN 108014438 B CN108014438 B CN 108014438B CN 201711287672 A CN201711287672 A CN 201711287672A CN 108014438 B CN108014438 B CN 108014438B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
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Abstract
The invention discloses a composite flame arrester, which comprises a first pipeline with a large middle and two small ends, and two second pipelines symmetrically arranged at two ends of the first pipeline, wherein the first pipeline comprises a foamed ceramic pipe and an outer pipe sleeved on the foamed ceramic pipe, a flame-retardant screen is arranged in the foamed ceramic pipe and positioned in the axial middle of the first pipeline, flame-retardant plates are arranged in the foamed ceramic pipe and positioned on two sides of the flame-retardant screen, a heat pipe is arranged in the axial middle of the first pipeline, one end of the heat pipe is inserted into the flame-retardant screen, the other end of the heat pipe is positioned on the outer side of the first pipeline, fins are arranged at the part of the heat pipe positioned on the outer side of the first pipeline, and a foamed iron nickel plate is arranged between the second pipeline and the first pipeline. The flame arrester can make up the defect that the screen mesh or the slit of the existing related heat pipe flame arrester has insufficient inhibition on explosion flame and explosion energy to the maximum extent, fully attenuates the explosion intensity, disperses the explosion energy, has obvious flame arresting and explosion suppression effects, and greatly improves the reliability.
Description
Technical Field
The invention belongs to the technical field of fire and explosion suppression, and particularly relates to a composite flame arrester.
Background
Currently, with the improvement of living standard of people, the demand on energy sources is increasing day by day, especially mainly coal, the corresponding mining intensity and depth are increased, and gas explosion accidents are frequent. The known common heat pipe flame arrestors include multilayer slit heat pipe flame arrestors and dry heat pipe flame arrestors, which basically rely on a metal mesh to combine with a heat pipe or a slit to combine with a heat pipe, and the principle is that flames can be choked to extinguish and the heat pipe effectively conducts heat to inhibit explosion. Because the temperature of flame combustion products in the pipeline is extremely high, the fire-retardant effect of the metal wire mesh or the slit is limited, the explosion pressure wave is not sufficiently controlled, the temperature resistance of the material is limited, the fire-retardant space is insufficient, the explosion or detonation is easily caused, and the consequence is unreasonable if the explosion cannot be timely inhibited. Therefore, a high-efficiency fire-retardant explosion-suppression device with high heat dissipation efficiency and enough space for heat transmission needs to be researched.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a composite flame arrester aiming at the defects of the prior art. The flame arrester can make up the defect that the screen mesh or the slit of the existing related heat pipe flame arrester has insufficient inhibition on explosion flame and explosion energy to the maximum extent, fully attenuates the explosion intensity, disperses the explosion energy, has remarkable flame-arresting and explosion-suppressing effects, and greatly improves the reliability.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a combined type flame arrester which characterized in that, includes big two little first pipelines in the middle, and two second pipelines of symmetry installation in first pipeline both ends, first pipeline includes ceramic foam pipe and suit outer tube on ceramic foam pipe, the intraductal axial middle part that just is located first pipeline of ceramic foam is provided with the back-fire relief silk screen, and the intraductal both sides that just is located the back-fire relief silk screen of ceramic foam all are provided with the back-fire relief board, the axial middle part of first pipeline is provided with the heat pipe, the one end of heat pipe is inserted in the back-fire relief silk screen, and the other end of heat pipe is located the first pipeline outside, and the position that the heat pipe is located the first pipeline outside is provided with the fin, be provided with the flange that is used for connecting second pipeline and first pipeline between second pipeline and the first pipeline, be provided with the iron nickel foam board between second pipeline and the first pipeline, the iron nickel foam board is cylindrical foam board, and the diameter of iron nickel foam board and the internal diameter phase-match of second pipeline, and the annular recess has been seted up to one side that the ceramic foam board is connected with first pipeline, and the tip card of ceramic foam pipe is gone into in the annular recess.
The composite flame arrester is characterized in that the foamed ceramic pipe is formed by splicing an upper half part and a lower half part, the upper half part is formed by splicing a left half part and a right half part, a first semicircular hole is formed in the right end of the left half part, a second semicircular hole matched with the first semicircular hole is formed in the left end of the right half part, the outer pipe is formed by splicing a left half outer pipe and a right half outer pipe, a third semicircular hole is formed in the right end of the left half outer pipe and in a position corresponding to the first semicircular hole, and a fourth semicircular hole matched with the third semicircular hole is formed in the left end of the right half outer pipe; the fire-retardant wire mesh is provided with a blind hole for inserting a heat pipe, a sealing ring is sleeved on the position of the heat pipe in the first pipeline, and sealing filler is arranged in a gap between the sealing ring and the heat pipe.
The composite flame arrester is characterized in that the sealing filler is sealant.
The composite fire arrestor is characterized in that the fire retardant plate is a foamed aluminum fire retardant plate, the fire retardant plate is in a pointed top conical shape, the pointed top end of the fire retardant plate is far away from a fire retardant screen mesh, the relative density of the foamed aluminum fire retardant plate is 15-30%, and the density of the foamed iron nickel plate is 0.3g/cm 3 Or 0.8g/cm 3 The pore diameter of the foamed iron nickel plate is 20PPI or 30PPI.
The composite flame arrester is characterized in that the flame arresting screen is formed by overlapping metal aluminum screens.
The composite flame arrester is characterized in that the number of the aluminum wire mesh layers is 6.
The composite flame arrester is characterized in that a gap is formed between the foamed ceramic pipe and the outer pipe, the outer diameter of the end part of the first pipeline is equal to that of the second pipeline, and the inner diameter of the end part of the outer pipe is equal to that of the second pipeline.
The composite flame arrester is characterized in that the second pipeline is Z-shaped, the foamed ceramic pipe is made of porous silicon resin foamed ceramic, and a flange plate is arranged at one end, far away from the first pipeline, of the second pipeline.
The composite flame arrester is characterized in that the outer pipe and the second pipeline are both stainless steel pipes, the heat pipes are gravity type heat pipes, the pipe shell material of the heat pipes is stainless steel, the working medium is potassium, and the number of the heat pipes is 3.
In addition, the invention also provides a method for preparing the composite flame arrester, which is characterized by comprising the following steps:
step one, sleeving a sealing ring on a heat pipe, then inserting the sealing ring into a blind hole of a fire-retardant screen mesh, and filling sealing filler into a gap between the sealing ring and the heat pipe;
splicing the left half part and the right half part to form an upper half part, placing the upper half part on a fire-retardant screen, enabling a heat pipe to penetrate through a hole formed by splicing the first semicircular hole and the second semicircular hole, welding the contact part of the left half part and the fire-retardant screen, and welding the contact part of the right half part and the fire-retardant screen; then, the fire retardant plates are welded on the inner side of the upper half part and positioned on two sides of the fire retardant screen mesh; then the lower half part and the upper half part are spliced to form a foamed ceramic tube;
sleeving the left half outer pipe and the right half outer pipe on the foamed ceramic pipe, enabling the heat pipe to penetrate through a hole formed by splicing the third semicircular hole and the fourth semicircular hole, and welding a contact part of the left half outer pipe and the right half outer pipe to form an outer pipe; then, mounting foamed iron nickel plates at the left end and the right end of the outer pipe, and clamping the end parts of the foamed ceramic pipes into the annular grooves of the foamed iron nickel plates so as to fix the foamed ceramic pipes and the outer pipe and form a first pipeline;
and step four, connecting the left end and the right end of the first pipeline with a second pipeline respectively by using flanges, and clamping the foamed iron nickel plate into the end part of the second pipeline to obtain the composite flame arrester.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the design of three parts of pipelines, the foamed ceramic pipe is arranged in the first pipeline, the three-dimensional reticular special structure of countless cellular small chambers of the foamed ceramic is utilized to fully inhibit the propagation of explosion energy and reduce the explosion intensity, thereby inhibiting the propagation of explosion flame, the pore diameter of the foamed ceramic is small, the skeleton structure is dense, free radicals of explosion reaction are frequently collided on the pore wall and destroyed, so that the free radicals participating in combustion are rapidly reduced, the explosion reaction is terminated, the propagation of the explosion flame and pressure wave is effectively prevented, and the chain reaction is interrupted; on the other hand, the explosion flame enters the tiny channel of the foamed ceramic and is dispersed into a plurality of tiny flames, the energy loss is increased, the activation energy of the reaction is reduced, the explosion shock wave can not go on, and therefore the gas explosion is restrained.
2. The composite flame arrester adopts a first pipeline with a large middle and two small ends, and two second pipelines symmetrically arranged at two ends of the first pipeline, and preferably the second pipelines are Z-shaped pipelines, so that the transmission space and distance of flame and pressure waves are increased, sufficient heat dissipation time is correspondingly given to each component, the suppression effect is enhanced, multiple explosion suppression is realized, and heat is effectively transferred by using the ribbed heat pipe.
3. The fire-retardant screen with the heat pipe is arranged in the middle of the first pipeline, so that the accumulated heat can be efficiently and quickly transmitted to the heat pipe, and the fins are arranged on the heat pipe to ensure that the heat is timely and quickly transmitted out; the fire-retardant plates are arranged on two sides of the fire-retardant screen mesh, so that heat dispersion is greatly enhanced.
4. According to the invention, the foamed iron nickel plate is arranged between the second pipeline and the first pipeline, and the annular groove is formed in one side of the foamed iron nickel plate, so that the end part of the foamed ceramic pipe is clamped in the annular groove, thus the first pipeline and the second pipeline can be well fixed, and the heat dissipation efficiency can be improved.
5. The invention adopts a symmetrical structure, and the second pipelines are symmetrically arranged at the two ends of the first pipeline, so that secondary treatment can be carried out on explosion flame or pressure waves, and the explosion flame or pressure waves can be completely restrained.
6. The flame arrester can make up the defect that the screen mesh or the slit of the existing related heat pipe flame arrester has insufficient inhibition on explosion flame and explosion energy to the maximum extent, fully attenuates the explosion intensity, disperses the explosion energy, has obvious flame arresting and explosion suppression effects, and greatly improves the reliability.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a perspective view of a composite flame arrestor of the present invention.
FIG. 2 is a schematic perspective view of the composite flame arrestor of the present invention with the heat pipe removed.
FIG. 3 is a cross-sectional view of a composite flame arrestor of the present invention.
Fig. 4 is a schematic structural diagram of the foamed iron nickel plate of the invention.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a perspective view of a firestop screen of the present invention.
Fig. 7 is a schematic view of the overall structure of the ceramic foam tube of the present invention.
Fig. 8 is an exploded view of the ceramic foam tube of the present invention.
Fig. 9 is an exploded view of the outer tube of the present invention.
Description of reference numerals:
1 — a first pipeline; 1-foamed ceramic tube; 1-11-upper half;
1-12-bottom half; 1-13-left half; 1-14-the right half;
1-15-first semicircular aperture; 1-16-second semicircular hole; 1-2-outer tube;
1-21-left half outer tube; 1-22-right outer half tube; 1-23-third semicircular hole;
1-24-fourth semicircular hole; 2-a second pipeline; 3, fire retardant screen mesh;
4-fire retardant board; 5, a heat pipe; 6-fins;
7, a flange; 8-foamed iron nickel plate; 9-an annular groove;
10-a flange plate; 11-sealing the filler; 12-blind hole;
13-a sealing ring; 14-sealing the filling material.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the composite flame arrester of the present invention includes a first pipeline 1 having a large middle and small ends, and two second pipelines 2 symmetrically installed at two ends of the first pipeline 1, where the first pipeline 1 includes a foamed ceramic pipe 1-1 and an outer pipe 1-2 sleeved on the foamed ceramic pipe 1-1, a fire retardant screen 3 is disposed in the foamed ceramic pipe 1-1 and located in the axial middle of the first pipeline 1, fire retardant plates 4 are disposed in the foamed ceramic pipe 1-1 and located on two sides of the fire retardant screen 3, a heat pipe 5 is disposed in the axial middle of the first pipeline 1, one end of the heat pipe 5 is inserted into the fire retardant screen 3, the other end of the heat pipe 5 is located outside the first pipeline 1, fins 6 are disposed at a position of the heat pipe 5 located outside the first pipeline 1, a flange 7 for connecting the second pipeline 2 and the first pipeline 1 is disposed between the second pipeline 2 and the first pipeline 1, an iron nickel plate 8 is disposed between the second pipeline 2 and the first pipeline 1, a cylindrical foamed iron plate 8 is inserted into the annular groove 9 of the foamed iron pipe 1, and the cylindrical nickel plate 8 are disposed in the foamed iron pipe 1, and the circular groove 9, and the circular iron pipe 1 are disposed in the circular groove 8, and the circular iron pipe 1.
As shown in fig. 7, 8 and 9, in this embodiment, the foamed ceramic tube 1-1 is formed by splicing an upper half portion 1-11 and a lower half portion 1-12, the upper half portion 1-11 is formed by splicing a left half portion 1-13 and a right half portion 1-14, a first semicircular hole 1-15 is formed at the right end of the left half portion 1-13, a second semicircular hole 1-16 matched with the first semicircular hole 1-15 is formed at the left end of the right half portion 1-14, the outer tube 1-2 is formed by splicing a left half outer tube 1-21 and a right half outer tube 1-22, a third semicircular hole 1-23 is formed at the right end of the left half outer tube 1-21 and at a position corresponding to the first semicircular hole 1-15, and a fourth semicircular hole 1-24 matched with the third semicircular hole 1-23 is formed at the left end of the right half outer tube 1-22; the fire-retardant screen mesh 3 is provided with a blind hole 12 for inserting the heat pipe 5, the part of the heat pipe 5 positioned in the first pipeline 1 is sleeved with a sealing ring 13, and a sealing filler 11 is arranged in a gap between the sealing ring 13 and the heat pipe 5.
In this embodiment, the sealant 11 is a sealant.
In the embodiment, the fire retardant plate 4 is a foamed aluminum fire retardant plate, the fire retardant plate 4 is in a pointed-top conical shape, the pointed top end of the fire retardant plate 4 is far away from the fire retardant screen 3, the relative density of the foamed aluminum fire retardant plate is 15% -30% (preferably 15%, 20.4% and 30%), and the density of the foamed iron nickel plate 8 is 0.3g/cm 3 Or 0.8g/cm 3 The pore size of the foamed iron nickel plate 8 is 20PPI or 30PPI.
In this embodiment, the fire-retardant wire mesh 3 is made of stacked metal aluminum wire meshes.
In this embodiment, the number of the metal aluminum wire mesh layers is 6.
In this embodiment, a gap is provided between the foamed ceramic tube 1-1 and the outer tube 1-2, the outer diameter of the end of the first pipeline 1 is equal to the outer diameter of the second pipeline 2, and the inner diameter of the end of the outer tube 1-2 is equal to the inner diameter of the second pipeline 2.
In this embodiment, the second pipeline 2 is zigzag-shaped, the ceramic foam tube 1-1 is made of porous silicon resin ceramic foam, and a flange 10 is disposed at an end of the second pipeline 2 away from the first pipeline 1.
In this embodiment, the outer pipe 1-2 and the second pipeline 2 are both stainless steel pipes, the heat pipe 5 is a gravity type heat pipe, the shell material of the heat pipe 5 is stainless steel, the working medium is potassium, and the number of the heat pipes 5 is 3.
The preparation method of the composite flame arrester comprises the following steps:
step one, sleeving a sealing ring 13 on a heat pipe 5, then inserting the sealing ring into a blind hole 12 of a fire-retardant screen 3, and filling a sealing filler 11 into a gap between the sealing ring 13 and the heat pipe 5;
step two, splicing the left half part 1-13 and the right half part 1-14 to form an upper half part 1-11, placing the upper half part 1-11 on a fire retardant screen 3, enabling a heat pipe 5 to penetrate through a hole formed by splicing a first semicircular hole 1-15 and a second semicircular hole 1-16, welding a part of the left half part 1-13, which is in contact with the fire retardant screen 3, and welding a part of the right half part 1-14, which is in contact with the fire retardant screen 3; then, the fire retardant plates 4 are welded on the inner sides of the upper half parts 1-11 and positioned at the two sides of the fire retardant screen 3; then the lower half part 1-12 is spliced with the upper half part 1-11 to form a foamed ceramic tube 1-1;
sleeving the left half outer pipe 1-21 and the right half outer pipe 1-22 on the foamed ceramic pipe 1-1, enabling the heat pipe 5 to penetrate through a hole formed by splicing the third semicircular hole 1-23 and the fourth semicircular hole 1-24, and welding a contact part of the left half outer pipe 1-21 and the right half outer pipe 1-22 to form an outer pipe 1-2; then, mounting foamed iron nickel plates 8 at the left end and the right end of the outer pipe 1-2, and clamping the end parts of the foamed ceramic pipe 1-1 into the annular grooves 9 of the foamed iron nickel plates 8, so as to fix the foamed ceramic pipe 1-1 and the outer pipe 1-2 and form a first pipeline 1;
and step four, respectively connecting the left end and the right end of the first pipeline 1 with the second pipeline 2 by using flanges 7, and clamping a foamed iron nickel plate 8 into the end part of the second pipeline 2 to obtain the composite flame arrester.
When the flame arrester is used, the flame arrester is connected with a pipeline through a flange, when explosion flame or pressure waves enter the flame arrester, the Z-shaped second pipeline 2 enables the wall effect to be obvious, the possibility of deflagration is greatly reduced, then, heat and pressure waves can be efficiently and quickly dispersed through the foam iron nickel plate 8, the explosion flame or pressure waves enter the first pipeline 1 with a large middle part and two small ends, the gathering effect is reduced and the explosion possibility is reduced through the reducing structure of the first pipeline 1, meanwhile, the energy of the flame and pressure waves is fully dispersed by utilizing the foam ceramic pipe 1-1 of the first pipeline 1, and the gap between the foam ceramic pipe 1-1 and the outer pipe 1-2 can also fully dissipate heat; and then the fire retardant plate with excellent heat dissipation characteristic continuously disperses explosion flame or pressure wave, and then the energy power is buffered to the maximum extent through the fire retardant screen mesh, and the heat is quickly transmitted to the ribbed heat pipe to dissipate the heat, so that the explosion can be well inhibited. In order to achieve the efficient inhibition effect, the second pipelines 2 are symmetrically arranged at the two ends of the first pipeline 1, so that secondary treatment can be performed on explosion flames or pressure waves to ensure the complete inhibition effect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The composite flame arrester is characterized by comprising a first pipeline (1) with a large middle and two small ends and two second pipelines (2) symmetrically arranged at two ends of the first pipeline (1), wherein the first pipeline (1) comprises a foamed ceramic pipe (1-1) and outer pipes (1-2) sleeved on the foamed ceramic pipe (1-1), a fire retardant screen (3) is arranged in the foamed ceramic pipe (1-1) and positioned in the axial middle of the first pipeline (1), fire retardant plates (4) are arranged in the foamed ceramic pipe (1-1) and positioned on two sides of the fire retardant screen (3), a heat pipe (5) is arranged in the axial middle of the first pipeline (1), one end of the heat pipe (5) is inserted into the fire retardant screen (3), the other end of the heat pipe (5) is positioned outside the first pipeline (1), fins (6) are arranged at the position of the heat pipe (5) positioned outside the first pipeline (1), a nickel pipe (2) and the first pipeline (1) are connected, a nickel pipe (7) and a cylindrical iron pipe (8) are arranged between the foamed iron pipe (1), an annular groove (9) is formed in one side, connected with the first pipeline (1), of the foamed iron nickel plate (8), and the end of the foamed ceramic pipe (1-1) is clamped into the annular groove (9); the foamed ceramic tube (1-1) is formed by splicing an upper half part (1-11) and a lower half part (1-12), the upper half part (1-11) is formed by splicing a left half part (1-13) and a right half part (1-14), a first semicircular hole (1-15) is formed in the right end of the left half part (1-13), a second semicircular hole (1-16) matched with the first semicircular hole (1-15) is formed in the left end of the right half part (1-14), and the outer tube (1-2) is formed by splicing a left half outer tube (1-21) and a right half outer tube (1-22); the fire retardant plate (4) is in a pointed top conical shape, and the pointed top end part of the fire retardant plate (4) is far away from the fire retardant screen (3); a gap is arranged between the foamed ceramic pipe (1-1) and the outer pipe (1-2), the outer diameter of the end part of the first pipeline (1) is equal to that of the second pipeline (2), and the inner diameter of the end part of the outer pipe (1-2) is equal to that of the second pipeline (2); the second pipeline (2) is Z-shaped.
2. The composite flame arrester as claimed in claim 1, wherein a third semicircular hole (1-23) is provided at the right end of the left half outer tube (1-21) and at a position corresponding to the first semicircular hole (1-15), and a fourth semicircular hole (1-24) matching with the third semicircular hole (1-23) is provided at the left end of the right half outer tube (1-22); the fire-retardant screen mesh (3) is provided with a blind hole (12) for inserting the heat pipe (5), the position of the heat pipe (5) in the first pipeline (1) is sleeved with a sealing ring (13), and a sealing filler (11) is arranged in a gap between the sealing ring (13) and the heat pipe (5).
3. A composite flame arrestor as defined in claim 2, wherein the sealing compound (11) is a sealant.
4. A composite flame arrester as claimed in claim 1, wherein the flame arrester plate (4) is an aluminium foam flame arrester plate and the iron foam nickel plate (8) has a density of 0.3g/cm 3 Or 0.8g/cm 3 The pore diameter of the foamed iron nickel plate (8) is 20PPI or 30PPI.
5. A composite flame arrester as claimed in claim 1, wherein the flame arresting screen (3) is constructed from a stack of metal aluminium screens.
6. A composite flame arrestor as defined in claim 5, wherein the aluminum wire mesh has 6 layers.
7. A composite flame arrester as claimed in claim 1, wherein the ceramic foam tube (1-1) is made of a silicone porous ceramic foam, and a flange (10) is provided at an end of the second conduit (2) remote from the first conduit (1).
8. The composite flame arrester as claimed in claim 1, wherein the outer pipes (1-2) and the second pipeline (2) are stainless steel pipes, the heat pipes (5) are gravity heat pipes, the shell material of the heat pipes (5) is stainless steel, the working medium is potassium, and the number of the heat pipes (5) is 3.
9. A method of making the composite flame arrestor of claim 2, comprising the steps of:
step one, a sealing ring (13) is sleeved on a heat pipe (5), then the sealing ring is inserted into a blind hole (12) of a fire-retardant silk screen (3), and a gap between the sealing ring (13) and the heat pipe (5) is filled with sealing filler (11);
step two, splicing the left half part (1-13) and the right half part (1-14) to form an upper half part (1-11), placing the upper half part (1-11) on a fire retardant screen (3), enabling a heat pipe (5) to penetrate through a hole formed by splicing a first semicircular hole (1-15) and a second semicircular hole (1-16), welding a part of the left half part (1-13) contacted with the fire retardant screen (3), and welding a part of the right half part (1-14) contacted with the fire retardant screen (3); then, welding fire retardant plates (4) on the inner sides of the upper half parts (1-11) and both sides of the fire retardant screen mesh (3); then the lower half parts (1-12) and the upper half parts (1-11) are spliced to form a foamed ceramic tube (1-1);
sleeving the left half outer pipe (1-21) and the right half outer pipe (1-22) on the foamed ceramic pipe (1-1), enabling the heat pipe (5) to penetrate through a hole formed by splicing the third semicircular hole (1-23) and the fourth semicircular hole (1-24), and welding a contact part of the left half outer pipe (1-21) and the right half outer pipe (1-22) to form an outer pipe (1-2); then, foam iron nickel plates (8) are arranged at the left end and the right end of the outer pipe (1-2), so that the end part of the foam ceramic pipe (1-1) is clamped into an annular groove (9) of the foam iron nickel plate (8), and the foam ceramic pipe (1-1) and the outer pipe (1-2) are fixed to form a first pipeline (1);
and fourthly, respectively connecting the left end and the right end of the first pipeline (1) with the second pipeline (2) by using flanges (7), and clamping a foamed iron nickel plate (8) into the end part of the second pipeline (2) to obtain the composite flame arrester.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711287672.5A CN108014438B (en) | 2017-12-07 | 2017-12-07 | Combined flame arrester |
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|---|---|---|---|
| CN201711287672.5A CN108014438B (en) | 2017-12-07 | 2017-12-07 | Combined flame arrester |
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| CN108014438A CN108014438A (en) | 2018-05-11 |
| CN108014438B true CN108014438B (en) | 2023-02-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110298091B (en) * | 2019-06-18 | 2020-11-13 | 四川大学 | Corrugated flame arrester pore channel structure design method based on cut-distance integration |
| CN112121334A (en) * | 2020-08-21 | 2020-12-25 | 江苏大学 | Composite efficient flame arrester |
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| CN108014438A (en) | 2018-05-11 |
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