CN211885050U

CN211885050U - Fire retardant device for pipeline

Info

Publication number: CN211885050U
Application number: CN201922264423.5U
Authority: CN
Inventors: 苑少立
Original assignee: Xuzhou Haotang Machinery Equipment Co ltd
Current assignee: Jiangsu Bafang Industrial Equipment Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-11-10
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a pipeline back-fire relief device in pipeline back-fire relief device technical field, including the connecting shell, control two sets ofly the connecting shell symmetry sets up, and is two sets of the connecting shell junction is by being equipped with mounting hole, seal groove and annular groove in proper order to interior outward, the back-fire relief dish of double-deck reverse installation structure is very compact, the back-fire relief dish adopts stainless steel ripple to pack, flame just can quench when getting into ripple packing triangle-shaped aperture, because the aperture of the relative other shape of sectional area of triangle-shaped aperture, the sectional area is little, the average sectional area in hole has also been reduced to the back-fire relief dish that sets up in addition, collision probability between free radical and the reaction molecule reduces thereupon, and the collision probability of free radical and passageway increases on the contrary, just so make the free radical reaction reduce to play the effect of back-fire relief, when installation and dismantlement, only need with metal sheet, metal mesh board, And the fire retardant disc is inserted into the annular groove after being connected, and then the screw is screwed into the mounting hole.

Description

Fire retardant device for pipeline

Technical Field

The utility model relates to a pipeline spark arrester technical field specifically is a pipeline back-fire relief device.

Background

The pipeline fire retardant device is a safety device for preventing flame spread of inflammable gas and inflammable liquid steam, and has the function of preventing external flame from entering equipment, pipelines and containers with inflammable and explosive materials or preventing fire from spreading in the equipment and the pipelines, but the traditional fire retardant device is simple in structure, not ideal in flame retardant effect and inconvenient to replace a damaged fire retardant core, and therefore the pipeline fire retardant device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline back-fire relief device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pipeline back-fire relief device, includes the connecting shell, controls two sets ofly the connecting shell symmetry sets up, and is two sets of the connecting shell passes through the screw fixation, and is two sets of the connecting shell junction is by being equipped with mounting hole, seal groove and annular groove in proper order to interior outward, mounting hole annular array is equipped with three groups, and is two sets of about being equipped with in the annular groove two sets of fire stopping plate, and are two sets of the back-fire stopping plate all is equipped with the screw in the center of the outer wall of one side of carrying on the back mutually, and is equipped with connecting screw, and is two sets of connecting screw is mutually the fixed metal sheet that is equipped with of one end mutually, equidistance is equipped with aperture and baffle about.

Further, two sets of the metal sheet all is equipped with the chamfer to the outer wall one end back of the body mutually, chamfer ring is equipped with cyclic annular elasticity rand to outer wall middle part, cyclic annular elasticity rand ring outside wall and the inside wall interference fit of connecting shell ring.

Further, the two groups of fire retardant discs are arranged in a reverse direction.

Furthermore, a metal mesh plate is sleeved on the outer wall of the connecting screw in a threaded manner, and the annular outer wall of the metal mesh plate is attached to the annular inner wall of the connecting shell.

Furthermore, the baffle is obliquely arranged in a manner that the left part is low and the right part is high, and the bottom of the baffle and the inner wall of the bottom of the small hole are positioned on the same horizontal line.

Furthermore, sealing rings are arranged in the two groups of sealing grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the double-layer reversely-installed fire-retardant disc is very compact in structure, the fire-retardant disc is made of stainless steel corrugated packing, flame can be quenched when entering triangular pores of the corrugated packing, the cross section area of each triangular pore is small relative to that of pores of other shapes, the average cross section area of each pore is reduced by the reversely-arranged fire-retardant disc, the collision probability between free radicals and reaction molecules is reduced, the collision probability between the free radicals and channel walls is increased, the free radical reaction is reduced, the fire-retardant effect is achieved, and combustible gas passes through the pores and directly hits on the baffle plate, has the same effect as the fire-retardant disc, and further improves the fire-retardant effect;

2. when the installation is installed and is dismantled, only need to connect the back with the metal sheet, metal mesh board and back fire relief dish and insert annular groove, then with screw in mounting hole can, the seal groove can improve the compactness that two sets of connection shells are connected with the sealing washer cooperation, the condition of gas leakage can not appear, and the metal sheet inserts the back, annular elasticity rand deformation supports tight connection shell inner wall, improve the compactness that connection shell and metal sheet are connected, make combustible gas can only pass through the aperture, thereby improve flame retardant efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of the structure of fig. 1A according to the present application.

In the figure: 1. a connecting shell; 2. mounting holes; 3. a sealing groove; 4. an annular groove; 5. a fire retardant tray; 6. connecting a screw rod; 7. a metal plate; 8. a small hole; 9. a baffle plate; 10. chamfering; 11. an annular elastic collar; 12. a metal mesh plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: a pipeline fire-retardant device, please refer to fig. 1, including the connecting shell 1, the left and right two sets of connecting shells 1 are symmetrically arranged, the opposite ends of the two sets of connecting shells 1 are connected with the pipeline through the flange, the combustible gas flows in from the right end and flows out from the left end through the fire-retardant disc 5, the two sets of fire-retardant discs 5 are reversely arranged, the interior of the fire-retardant disc 5 is a structure with triangular pores arranged in rows and respectively, the included angle between the extending direction of the triangular pores and the horizontal direction is five to ten degrees, the structure of the double-layer reverse-mounted fire-retardant disc 5 is very compact, the fire-retardant disc 5 adopts stainless steel corrugated packing, the flame can be quenched when entering the triangular pores of the corrugated packing, because the sectional area of the triangular pores is small relative to the pores of other shapes, the sectional area is small, in addition, the reverse-arranged fire-retardant disc 5 also reduces the average sectional area of the pores, the collision probability between the free, thus, the free radical reaction is reduced, the effect of fire resistance is achieved, the fire retardant discs 5 can effectively prevent flame from spreading, the two groups of connecting shells 1 are fixed through screws, the joints of the two groups of connecting shells 1 are sequentially provided with mounting holes 2, sealing grooves 3 and annular grooves 4 from outside to inside, the annular arrays of the mounting holes 2 are provided with three groups, two groups of fire retardant discs 5 on the left and the right are arranged in the two groups of annular grooves 4, the centers of the outer walls of the two groups of fire retardant discs 5 on the opposite sides are provided with screw holes, connecting screw rods 6 are arranged in the screw holes, one ends of the two groups of connecting screw rods 6 on the opposite sides are fixedly provided with metal plates 7, the outer wall on the left side of each metal plate 7 is provided with small holes 8 and baffle plates 9 at equal intervals from top to bottom, the left side of each baffle plate 9 is inclined from bottom to the right side, the inner walls at the bottoms of the small holes, the flame retardant effect is further improved as the flame retardant disc 5 has the same effect;

referring to fig. 2, chamfers 10 are arranged at opposite ends of circumferential outer walls of two groups of metal plates 7, the insertion is smooth, an annular elastic collar 11 (made of high-temperature-resistant elastic material) is arranged at the middle part of the circumferential outer wall of each chamfers 10, the circumferential outer wall of each annular elastic collar 11 is in interference fit with the circumferential inner wall of the connecting shell 1, and the inserted annular elastic collar 11 deforms to abut against the inner wall of the connecting shell 1, so that the tightness of the connection between the connecting shell 1 and the metal plates 7 is improved, and combustible gas can only pass through the small holes 8;

referring to fig. 1, the outer wall of the connecting screw 6 is threaded and sleeved with a metal mesh plate 12, the metal mesh plate 12 is attached to the inner wall of the connecting shell 1, the outer wall of the metal mesh plate 12 is preferably made of stainless steel, and the distance between two groups of metal mesh plates 12 is adjusted according to different combustible gases, so as to control the anti-detonation effect, for example: when the combustible gas is a mixture of ethylene and air, the distance between the two groups of metal mesh plates 12 is 0.2mm, when the combustible gas is a mixture of hydrogen and air, the distance between the two groups of metal mesh plates 12 is 0.1mm, the metal mesh plates 12, the metal plates 7 and the fire retardant disc 5 form a cavity, and the combustible gas passes through the cavity and plays a role in rectification, so that the conditions of vortex and turbulent flow are few, and the noise of gas passing is reduced;

referring to fig. 1, the two sealing grooves 3 are provided with sealing rings to improve the tightness of the connection between the two connecting shells 1, so that gas leakage is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipeline back-fire relief device, includes connecting shell (1), controls two sets of connecting shell (1) symmetry sets up, and two sets of connecting shell (1) passes through the screw fixation, its characterized in that: two sets of connect shell (1) junction is by outer to interior mounting hole (2), seal groove (3) and annular groove (4) of being equipped with in proper order, mounting hole (2) annular array is equipped with three groups, and is two sets of fire disk (5) of hindering about being equipped with in annular groove (4), and is two sets of the center of the outer wall of the mutually opposite side of fire disk (5) all is equipped with the screw, and is equipped with connecting screw (6) in the screw, and is two sets of connecting screw (6) are mutually fixed with metal sheet (7) in the one end of mutually opposite sides, equidistance is equipped with aperture (8) and baffle (9) about metal sheet (7) left side outer wall, just aperture (8) are located between two sets of baffles (9).

2. A pipe fire barrier as claimed in claim 1, wherein: two sets of metal sheet (7) ring is all equipped with chamfer (10) to the outer wall one end back on the back, chamfer (10) ring is equipped with annular elastic collar (11) to outer wall middle part, annular elastic collar (11) ring is to outer wall and connecting shell (1) ring inner wall interference fit.

3. A pipe fire barrier as claimed in claim 1, wherein: the two groups of fire retardant discs (5) are arranged in reverse.

4. A pipe fire barrier as claimed in claim 1, wherein: the outer wall of the connecting screw rod (6) is sleeved with a metal mesh plate (12) in a threaded manner, and the circumferential outer wall of the metal mesh plate (12) is attached to the circumferential inner wall of the connecting shell (1).

5. A pipe fire barrier as claimed in claim 1, wherein: the baffle (9) is obliquely arranged in a manner of low left and high right, and the bottom of the baffle (9) and the inner wall of the bottom of the small hole (8) are positioned on the same horizontal line.

6. A pipe fire barrier as claimed in claim 1, wherein: sealing rings are arranged in the two groups of sealing grooves (3).