Pipeline burning-resistant flame arrester

Abstract

The utility model discloses a pipeline burning-resistant flame arrester, and particularly relates to the technical field of flame arresters, which comprises a shell and an upper end plate mounted at the top end of the shell, an upper flame-retardant net and a lower flame-retardant net are mounted in an inner cavity of the shell, and a plurality of groups of flame-retardant plates distributed at equal intervals are arranged between the two flame-retardant nets. The lengths of the multiple sets of fire-retardant plates are sequentially reduced from the middle to the two sides, the two ends of each fire-retardant plate are attached to the inner wall of the shell, a rainproof cover is arranged above the upper end plate, the upper end plate is sleeved with the rainproof cover, and the rainproof cover ascends and descends outside the upper end plate. The rainproof cover is composed of an outer ring arranged outside the upper end plate in a sleeving mode and a detachable sealing cover arranged at the top end of the outer ring, and a connecting ring is fixed to the inner wall close to the top end of the outer ring. According to the utility model, the adjustable rainproof cover and a detachable structure are utilized, so that different adjustments can be carried out according to working conditions, temperature and heat are prevented from continuing in the shell, and the burning-resistant effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flame arresters, and more specifically to a pipeline burn-resistant flame arrester. Background Art

[0002] Pipe end flame arresters are usually installed at the ventilation holes of atmospheric pressure storage tanks. They are mainly used to prevent the flames generated by the ignition of discharged steam, thereby reducing the flame propagation speed and pressure to atmospheric pressure. This type of flame arrester is mainly used to prevent the flames generated by the ignition of discharged steam to reduce the flame propagation speed and pressure to ensure safety. However, when the temperature inside the rain cap is too high during use, the existing flame arrester is prone to flashback, which is dangerous. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a pipeline fire-resistant flame arrester, comprising a shell and an upper end plate installed on the top of the shell, two upper and lower fire-blocking nets are installed in the inner cavity of the shell, and a plurality of groups of equidistantly distributed fire-blocking plates are arranged between the two fire-blocking nets, the lengths of the plurality of groups of fire-blocking plates decrease from the middle to both sides, and the two ends are attached to the inner wall of the shell, a rain cover is arranged above the upper end plate, the rain cover is sleeved on the outside of the upper end plate, and the rain cover is movable up and down outside the upper end plate;

[0004] The rain cover is composed of an outer ring sleeved on the outside of the upper end plate and a detachable cover on the top of the outer ring. A connecting ring is fixed on the inner wall near the top of the outer ring. An elastic movable part is connected between the connecting ring and the upper end plate. The rain cover is movably connected to the upper end plate through the elastic movable part.

[0005] In a preferred embodiment, the fire-blocking plate comprises a first fire-blocking plate and a second fire-blocking plate, and the first fire-blocking plate and the second fire-blocking plate both comprise an upper plate, a middle plate and a lower plate, and the upper plate, the middle plate and the lower plate are arranged in a serpentine shape, and the upper plate, the middle plate and the lower plate of the first fire-blocking plate and the second fire-blocking plate are arranged in parallel, and the spacing increases from top to bottom.

[0006] In a preferred embodiment, in the adjacent first fire-blocking plates and the second fire-blocking plates, the connection between the middle plate and the lower plate is fixedly fitted with the connection between the upper plate and the middle plate.

[0007] In a preferred embodiment, the inner wall of the outer ring is attached to the edge of the upper end plate, a limiting ring is arranged on the inner side of the bottom end of the outer ring, and a plurality of ventilation holes are evenly arranged on the outer ring.

[0008] In a preferred embodiment, a sealing ring cooperating with the cover is attached to the top of the connecting ring, at least two fusible columns are connected between the connecting ring and the upper end plate, and a twisting piece is installed on the top of the cover.

[0009] In a preferred embodiment, the elastic movable part includes a plurality of springs connected between the connecting ring and the upper end plate, a limiting rod is fixed at the bottom of the connecting ring, a limiting tube is sleeved at the bottom end of the limiting rod, and the limiting tube is fixed on the upper end plate.

[0010] Technical effects and advantages of the utility model:

[0011] 1. The utility model accelerates the speed of the flame and air fluid during operation, thereby increasing the mixing rate of the fluid and air, making it easier to extinguish the flame and sparks. The serpentine arrangement of the upper plate, the lower plate and the middle plate is not located on the same straight line. When the flame is in the process of circulation, it will collide with the inner wall of the fire-blocking plate, causing the flame to lose heat and be easier to extinguish.

[0012] 2. The adjustable rain cover and detachable structure can be used to adjust the machine according to the working conditions, so as to avoid the temperature and heat from continuing inside the shell and achieve the effect of burning resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 For the utility model Figure 2 Detailed structural diagram at point A in the middle.

[0016] Explanation of the reference numerals: 1 shell, 2 upper end plate, 3 fire-blocking net, 4 rain cover, 5 outer ring, 6 sealing cover, 7 connecting ring, 8 first fire-blocking plate, 9 second fire-blocking plate, 10 upper plate, 11 middle plate, 12 lower plate, 13 limiting ring, 14 ventilation hole, 15 sealing ring, 16 fusible column, 17 torsion piece, 18 spring, 19 limiting rod, 20 limiting tube. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0018] like Figure 1-3A pipeline fire-resistant flame arrester shown in the figure comprises a shell 1 and an upper end plate 2 installed on the top of the shell 1, two upper and lower fire-blocking nets 3 are installed in the inner cavity of the shell 1, and a plurality of groups of equidistantly distributed fire-blocking plates are arranged between the two fire-blocking nets 3, the lengths of the plurality of groups of fire-blocking plates decrease from the middle to both sides, and the two ends are attached to the inner wall of the shell 1, a rain cover 4 is arranged above the upper end plate 2, the rain cover 4 is sleeved on the outside of the upper end plate 2, and the rain cover 4 is movable up and down outside the upper end plate 2;

[0019] The rain cover 4 is composed of an outer ring 5 sleeved on the outside of the upper end plate 2 and a detachable cover 6 at the top of the outer ring 5. A connecting ring 7 is fixed on the inner wall near the top of the outer ring 5. An elastic movable part is connected between the connecting ring 7 and the upper end plate 2. The rain cover 4 is movably connected to the upper end plate 2 through the elastic movable part.

[0020] Based on the above, when working, after the flame enters the shell 1, it will be extinguished and flame-extinguished through the upper and lower layers of fire-blocking nets 3 and the fire-blocking plates between the two layers of fire-blocking nets 3. When the flame continues to burn for a certain period of time, the temperature inside the shell 1 will rise, and the rain cover 4 will rise on the upper end plate 2, so that a gas circulation channel is formed between the inside and outside of the rain cover 4, and external air will enter the shell 1 and the rain cover 4 to prevent the temperature from continuing to accumulate, thereby achieving a burn-resistant effect.

[0021] The fire-blocking plate comprises a first fire-blocking plate 8 and a second fire-blocking plate 9, each of which comprises an upper plate 10, a middle plate 11 and a lower plate 12, wherein the upper plate 10, the middle plate 11 and the lower plate 12 are arranged in a serpentine shape, and the upper plate 10, the middle plate 11 and the lower plate 12 of the first fire-blocking plate 8 and the second fire-blocking plate 9 are arranged in parallel, and the spacing increases from top to bottom;

[0022] In the adjacent first fire-blocking plate 8 and the second fire-blocking plate 9, the connection between the middle plate 11 and the lower plate 12 is fixedly fitted with the connection between the upper plate 10 and the middle plate 11;

[0023] On the basis of the above, several groups of fire-blocking panels block the passage inside the shell 1, so that the flame entering the shell 1 is initially extinguished by the fire-blocking net 3 below, and the subsequent flame enters the fire-blocking panel. The first fire-blocking plate 8 and the second fire-blocking plate 9 arranged in a serpentine shape are used to increase the time the flame stays in the fire-blocking panel. At the same time, the upper plate 10, the middle plate 11 and the lower plate 12 are all arranged in parallel, and the spacing increases from top to bottom. When the flame and gas are circulating, the fluid speed is accelerated, and the mixing rate of the fluid and the air is increased, so that the flame and sparks are easily extinguished. At the same time, the serpentine arrangement between the upper plate 10, the lower plate 12 and the middle plate 11 is not located on the same straight line. When the flame is in the process of circulation, it will collide with the inner wall of the fire-blocking panel, so that the flame loses heat and is easier to extinguish.

[0024] The inner wall of the outer ring 5 is attached to the edge of the upper end plate 2, a limit ring 13 is arranged inside the bottom of the outer ring 5, and a plurality of ventilation holes 14 are evenly opened on the outer ring 5;

[0025] A sealing ring 15 matching the cover 6 is attached to the top of the connecting ring 7, at least two fusible columns 16 are connected between the connecting ring 7 and the upper end plate 2, and a twisting piece 17 is installed on the top of the cover 6;

[0026] Based on the above, the cover 6 and the outer ring 5 are in a detachable structure, a thread is provided on the cover 6, the cover 6 is installed on the top of the outer ring 5 through the thread, and the bottom end of the cover 6 is pressed against the sealing ring 15 to achieve sealing.

[0027] The elastic movable part includes a plurality of springs 18 connected between the connecting ring 7 and the upper end plate 2 . A limiting rod 19 is fixed at the bottom of the connecting ring 7 . A limiting tube 20 is sleeved on the bottom end of the limiting rod 19 . The limiting tube 20 is fixed on the upper end plate 2 .

[0028] Based on the above, under normal conditions, a portion of the ventilation holes 14 is located on the outer ring 5 above the upper end plate 2 , and the portion of the ventilation holes 14 is connected to the interior of the shell 1 and the interior of the rain cover 4 , and the external air circulates through the portion of the ventilation holes 14 .

[0029] After working for a long time, when the internal temperature of the shell 1 rises to a certain temperature, the fusible column 16 will melt, and the limiting effect of the fusible column 16 on the outer ring 5 and the upper end plate 2 will be cancelled. At this time, the entire rain cover 4 is bounced upward by the force of the spring 18, so that the ventilation hole 14 located below the upper end plate 2 moves to the top of the upper end plate 2, so that the external air and airflow enter the shell 1 and the rain cover 4 from the ventilation hole 14. The flow rate increases, preventing the temperature from continuing to accumulate, thereby achieving a burn-resistant effect.

[0030] When the temperature cannot drop quickly due to special circumstances, the cover 6 can be directly removed from the rain cover 4 through the twisting piece 17, so that the inside of the shell 1 is directly connected to the outside, the temperature drops quickly, and the burn-resistant effect is achieved.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A pipeline fire-resistant flame arrester, characterized in that: It includes a shell and an upper end plate installed on the top of the shell, two upper and lower fire-blocking nets are installed in the inner cavity of the shell, and a plurality of groups of equidistantly distributed fire-blocking plates are arranged between the two fire-blocking nets, the lengths of the plurality of groups of fire-blocking plates decrease from the middle to the two sides, and the two ends are attached to the inner wall of the shell, a rain cover is arranged above the upper end plate, the rain cover is sleeved on the outside of the upper end plate, and the rain cover is movable up and down outside the upper end plate; The rain cover is composed of an outer ring sleeved on the outside of the upper end plate and a detachable cover on the top of the outer ring. A connecting ring is fixed on the inner wall near the top of the outer ring. An elastic movable part is connected between the connecting ring and the upper end plate. The rain cover is movably connected to the upper end plate through the elastic movable part.

2. A pipeline fire-resistant flame arrester according to claim 1, characterized in that: The fire-blocking plate comprises a first fire-blocking plate and a second fire-blocking plate, each of which comprises an upper plate, a middle plate and a lower plate, the upper plate, the middle plate and the lower plate are arranged in a serpentine shape, and the upper plate, the middle plate and the lower plate of the first fire-blocking plate and the second fire-blocking plate are arranged in parallel, and the spacing increases from top to bottom.

3. A pipeline fire-resistant flame arrester according to claim 2, characterized in that: In the adjacent first fire-blocking plates and the second fire-blocking plates, the connection between the middle plate and the lower plate is fixedly fitted with the connection between the upper plate and the middle plate.

4. A pipeline fire-resistant flame arrester according to claim 2, characterized in that: The inner wall of the outer ring is fitted to the edge of the upper end plate, a limiting ring is arranged on the inner side of the bottom end of the outer ring, and a plurality of ventilation holes are evenly arranged on the outer ring.

5. The pipeline fire-resistant flame arrester according to claim 1, characterized in that: A sealing ring matched with the cover is attached to the top of the connecting ring, at least two fusible columns are connected between the connecting ring and the upper end plate, and a twisting piece is installed on the top of the cover.

6. The pipeline fire-resistant flame arrester according to claim 1, characterized in that: The elastic movable part includes a plurality of springs connected between the connecting ring and the upper end plate. A limiting rod is fixed at the bottom of the connecting ring. A limiting tube is sleeved at the bottom end of the limiting rod. The limiting tube is fixed on the upper end plate.

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