Rotary flame arrester

Abstract

The utility model relates to the technical field of flame arresters, and discloses a rotary flame arrester which comprises a shell, a flame arresting core is arranged in the middle of the interior of the shell, a conical barrel is sleeved on the outer side of one end of the flame arresting core, and arc-shaped strips are glued at the upper end and the lower end of the inner side of the conical barrel. The rotary flame arrester comprises a flame arresting core, the other end of the outer side of the flame arresting core is sleeved with an air storage cylinder, a rotating frame is fixed to one end of the inner side of the air storage cylinder, an adapting pipe is transversely arranged in the middle of the inner side of the rotating frame, and a rotating rod is transversely inserted into the inner side of the adapting pipe. The fire-retardant core drives the rotating rod to be matched with the adapting pipe at the front end of the rotating frame to rotate, so that the fire-retardant core can rotate when being pushed by air waves led out by flame explosion every time, the fire-retardant core can rotate after being used for a long time to enable adhered dust to fall off, and the fire-retardant core can be kept relatively clean for a long time.

Description

Technical Field

[0001] This utility model relates to the field of flame arrester technology, specifically a rotary flame arrester. Background Technology

[0002] A flame arrester is a safety device used to prevent the spread of flames in pipelines or equipment. It is typically installed on storage tanks and pipelines that transport or discharge flammable and explosive gases, such as flares, heating and combustion systems, petroleum gas recovery systems, or other flammable gas systems. Its main function is to prevent external flames or explosions from entering the storage tank or to prevent internal flames or explosions from spreading to the external environment, thereby protecting equipment and personnel. The working principle of a flame arrester is mainly based on heat transfer and the wall effect. When a flame passes through the many tiny channels or pores of the flame arrester, the flame temperature decreases due to the heat transfer effect of the channel walls, eventually extinguishing the flame. Simultaneously, as the channel size decreases, the probability of collisions between free radicals and reactant molecules decreases, while the probability of collisions between free radicals and the channel walls increases. This reduces free radical reactions. When the channel size decreases to a certain value, this wall effect creates conditions that prevent the flame from continuing, thus stopping it. Flame arresters come in various types, including corrugated pipe flame arresters, gas flame arresters, and explosion-proof pipe flame arresters, and are suitable for different application scenarios. For example, corrugated pipe flame arresters are suitable for large hydrogen pipelines, while gas flame arresters are suitable for combustible gas pipelines, such as storage tanks or flare systems for oil products like gasoline, kerosene, light diesel oil, benzene, toluene, and crude oil, gas purification and ventilation systems, gas analysis systems, coal mine gas emission systems, and fuel gas pipelines for heating furnaces. Before installing a flame arrester, carefully read the instruction manual and verify that the nameplate matches the requirements of the pipeline. The flow direction markings on the flame arrester must be consistent with the medium flow direction. It should be inspected every six months to check for defects such as blockage, deformation, or corrosion in the flame arrester layer. Blocked flame arresters should be cleaned thoroughly to ensure that each hole is unobstructed. Deformed or corroded flame arresters should be replaced promptly. When cleaning the flame arrester core, use high-pressure steam, non-corrosive solvents, or compressed air to purge. Do not use sharp hardware to scrub. When reinstalling the flame arrester layer, replace the gaskets and confirm that the sealing surfaces are clean and undamaged to prevent air leakage.

[0003] Publication number CN211835926U discloses a flame arrester comprising an integrally formed cylindrical body, the cylindrical body consisting of a square cylindrical body and four-sided conical cylindrical bodies connected to both sides of the square cylindrical body. One side of the cylindrical body is an inlet with a flange, and the other side is an outlet with a flange. A flange cover is provided on the top of the square cylindrical body, and the flange cover is sealed to the square cylindrical body by an asbestos layer. Two parallel baffles with shapes adapted to the square cylindrical body are provided inside the square cylindrical body, and multiple partitions are provided between the two baffles. Corrugated mesh is provided between adjacent partitions. This flame arrester has a wide range of explosion-proof applications, low fluid resistance, simple structure, low cost, can prevent explosion flames, and is easy to replace and clean.

[0004] The above technology utilizes flange covers and square cylinders to help increase the explosion-proof range. However, many flame arresters can only be cleaned when the furnace is shut down, making it very difficult to clean them.

[0005] Therefore, in view of this, we have studied and improved the existing shortcomings and proposed a rotary flame arrester. Utility Model Content

[0006] The purpose of this invention is to provide a rotary flame arrester to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotary flame arrester, comprising: a shell, a flame arresting core disposed in the middle of the interior of the shell, a conical cylinder sleeved on the outer side of one end of the flame arresting core, an arc-shaped strip glued to the upper and lower ends of the inner side of the conical cylinder, an air accumulator sleeved on the other end of the outer side of the flame arresting core, a rotating frame fixed to one end of the inner side of the air accumulator, a receiving pipe horizontally disposed in the middle of the inner side of the rotating frame, and a rotating rod horizontally inserted into the inner side of the receiving pipe;

[0008] An auxiliary structure is provided at the other end of the inner side of the outer shell.

[0009] Furthermore, the receiving pipe and the rotating rod are in a rotating motion, and the inner side of the arc-shaped strip is provided with an air guiding cavity, so that the rotating rod can drive the flame arrestor core to rotate when it cooperates with the receiving pipe.

[0010] Furthermore, a spiral structure is provided at the front end of the inner side of the gas accumulator, which facilitates the spiral movement of the air waves generated by the flame inside the gas accumulator.

[0011] Furthermore, the port extending outward from the arc-shaped strip is flush with the port of the spiral structure inside the air accumulator, which facilitates the arc-shaped strip to guide the air waves accumulated in the conical cylinder to the front end of the inner side of the air accumulator.

[0012] Furthermore, the maximum diameter of the conical cylinder is slightly larger than the diameter of the front end of the flame arrestor core, so that the arc-shaped strip can be clamped between the conical cylinder and the flame arrestor core.

[0013] Furthermore, the auxiliary structure includes a furnace shell, a ignition plate, and a flame extension tube. The furnace shell is located at the other end of the inner side of the outer shell, and the flame extension tube is located on the inner side of the furnace shell. The ignition plate is fixed at one end of the furnace shell. Multiple cylindrical path spaces are opened on the inner sides of the ignition plate and the flame extension tube to facilitate the extension of the movement path after the flame is introduced into the inner side of the ignition plate and the flame extension tube.

[0014] Furthermore, the flame spreader and furnace shell are bulging in shape to facilitate the reduction of the temperature generated by flame contact.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model utilizes the gas wave generated by the flame explosion to be discharged from the inside of a conical cylinder. Due to the conical shape of the cylinder, the gas wave accumulated by the flame is amplified and discharged along the arc-shaped strip. At this time, the gas wave discharged by the arc-shaped strip enters the inside of the gas storage cylinder, and the spiral structure on the inner side of the gas storage cylinder continuously rotates the gas wave and pushes the outer side of the flame arrestor core. After being pushed by the gas wave, the flame arrestor core begins to rotate. The flame arrestor core drives the rotating rod to rotate in conjunction with the receiving pipe at the front end of the rotating frame. In this way, the flame arrestor core will rotate every time it is pushed by the gas wave generated by the flame explosion. After a long period of use, the flame arrestor core will rotate to remove the sticky dust, thereby keeping the flame arrestor core relatively clean for a long time.

[0017] 2. In this invention, the flame first passes through a contact plate, which divides the flame into multiple parts. These multiple parts of the flame then enter the flame spreader. The flame spreader has a raised and wide shape, and its inner side is provided with multiple long cooling paths, which facilitates rapid reduction of the flame temperature. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first cross-sectional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the second cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the first hierarchical structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the second hierarchical structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the first auxiliary structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the second auxiliary structure of this utility model.

[0024] In the diagram: 1. Outer shell; 2. Conical cylinder; 3. Flame arrestor core; 4. Gas storage cylinder; 5. Auxiliary structure; 51. Furnace shell; 52. Flame contact plate; 53. Flame extension tube; 6. Rotating frame; 7. Support pipe; 8. Rotating rod; 9. Arc strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-6 As shown, a rotary flame arrester includes: a housing 1, a flame arresting core 3 disposed in the middle of the interior of the housing 1, a conical cylinder 2 sleeved on the outer side of one end of the flame arresting core 3, an arc-shaped strip 9 glued to the upper and lower ends of the inner side of the conical cylinder 2, an air accumulator 4 sleeved on the other end of the outer side of the flame arresting core 3, a rotating frame 6 fixed to one end of the inner side of the air accumulator 4, a receiving pipe 7 transversely disposed in the middle of the inner side of the rotating frame 6, and a rotating rod 8 transversely inserted into the inner side of the receiving pipe 7.

[0027] An auxiliary structure 5 is provided at the other end of the inner side of the outer casing 1.

[0028] Furthermore, because the rotating rod 8, horizontally positioned at the center of the surface of the flame arrestor core 3, is inserted into the receiving pipe 7 at the front end of the rotating frame 6, the spiral structure inside the gas accumulator 4 can generate a spiral thrust from the flame-exported air wave. This spiral thrust then drives the outer side of the flame arrestor core 3 to move, causing it to rotate. The conical cylinder 2 then accumulates the flame-exported air wave, dividing it into two streams that are guided into the arc-shaped strips 9. Excess air waves or flames are absorbed by the multiple grids of the flame arrestor core 3. Users can add multiple arc-shaped strips 9, thus allowing the air waves exported from the conical cylinder 2 to be exported by multiple arc-shaped strips 9. At this point, the thrust of the air wave will be evenly divided into several thrusts by multiple arc-shaped bars 9. The flame arrestor core 3 will be slowly pushed by the air waves guided by multiple arc-shaped bars 9. The fewer arc-shaped bars 9 will absorb the air waves of the flame explosion. At this point, the rotation intensity of the flame arrestor core 3 will increase. The user can also deepen the depth and scale of the threaded structure inside the air accumulator 4, which will lengthen the time that the air wave moves inside the air accumulator 4, thereby prolonging the time that the air wave pushes the flame arrestor core 3. The user can reduce the depth of the threaded structure inside the air accumulator 4, thereby reducing the time that the air wave pushes the flame arrestor core 3, but increasing the intensity of the air wave pushing the flame arrestor core 3.

[0029] This has resulted in the following effects and novel technologies:

[0030] Firstly, regarding the automatic cleaning effect, the flame arrestor core 3 rotates under the impetus of the flame explosion gas. After prolonged use, the rotation removes dust adhering to the flame arrestor core 3, preventing dust accumulation from affecting its performance. This keeps the flame arrestor core 3 clean for a long time, extending the life of the flame arrestor, reducing the frequency of manual cleaning, and improving work efficiency. Secondly, in terms of gas wave utilization and adjustment, the cone-shaped cylinder 2 amplifies the gas wave accumulated by the flame and directs it along the arc-shaped strip 9. Users can increase the number of arc-shaped strips 9 to evenly divide the gas wave into multiple thrusts, adjusting the pushing intensity on the flame arrestor core 3. Fewer arc-shaped strips 9 will absorb the gas wave, increasing the rotation intensity of the flame arrestor core 3. The spiral structure inside the gas accumulator cylinder 4 can be adjusted by deepening or reducing the threads. The structural depth and scale allow for adjustment of the time the air wave travels within the device, thereby extending or reducing the time the air wave pushes the flame arrestor core 3 and altering the intensity of the pushing action. This air wave utilization and adjustment can optimize the rotation effect of the flame arrestor core 3 according to different working requirements and flame conditions to improve flame arresting performance. Finally, the structure works in synergy. All components of the device, such as the conical cylinder 2, the arc-shaped bar 9, the air accumulator 4, the rotating frame 6, the receiving pipe 7, and the rotating rod 8, work together. The conical cylinder 2 guides the air wave into the arc-shaped bar 9, which in turn guides it into the air accumulator 4. The spiral structure inside the air accumulator 4 pushes the flame arrestor core 3, which rotates through the rotating rod 8 in conjunction with the receiving pipe 7 at the front end of the rotating frame 6. This synergy makes the flame arrester's operation more efficient and stable.

[0031] like Figures 1-6 As shown, a rotary flame arrester includes an auxiliary structure 5 comprising a furnace shell 51, a flame-touch plate 52, and a flame-tracing tube 53. The furnace shell 51 is located at the other end of the inner side of the outer shell 1. The flame-tracing tube 53 is located inside the furnace shell 51. The flame-touch plate 52 is fixed to one end of the furnace shell 51. Multiple cylindrical path spaces are formed on the inner sides of the flame-touch plate 52 and the flame-tracing tube 53.

[0032] As for the rest, since the furnace shell 51 and the contact plate 52 are located at the other end inside the outer shell 1, if the flame ignites at the other end inside the outer shell 1, the flame will first contact the contact plate 52. At this time, the contact plate 52 will briefly divide the flame into multiple small flames. Meanwhile, the extension tube 53 can extend the movement path generated after the flame contacts, thereby reducing the intensity of the flame. The user can increase the thickness of the inner wall of the path inside the extension tube 53 to isolate most of the temperature brought by the flame. The user can also increase the thickness or length of the contact plate 52. When the flame passes through the contact plate 52, it will be divided into multiple small flames before it first contacts the extension tube 53. The extended contact plate 52 directly reduces the intensity of the flame.

[0033] This has resulted in the following effects and novel technologies:

[0034] The fire-touch plate 52 and the flame-tracing tube 53 in the auxiliary structure 5 bring about multiple effects and novel technologies. In terms of flame intensity reduction, when the flame bursts at the other end inside the outer shell 1, the fire-touch plate 52 can briefly divide the flame into multiple smaller flames, and the flame-tracing tube 53 can extend the flame's movement path, thereby effectively reducing the flame intensity. This technology of actively intervening in the flame state through structural design is relatively novel. In terms of temperature isolation, users can increase the thickness of the inner wall of the flame-tracing tube 53 to isolate most of the flame temperature, and can also increase the thickness or length of the fire-touch plate 52 to further reduce the flame intensity. This adjustable design is novel and can flexibly adjust the ability to isolate the flame temperature and reduce its intensity according to actual needs. For rapid cooling, the flame-tracing tube 53 has a raised, wide structure with multiple long cooling paths on the inside. After the flame is divided into multiple parts by the fire-touch plate 52, it enters the flame-tracing tube 53, which facilitates rapid reduction of the flame temperature. This design helps to improve the overall flame-tracing performance of the flame arrester.

[0035] Working principle: When using this rotary flame arrester, first place the conical cylinder 2 inside the outer shell 1, then secure the front end of the flame arresting core 3 to the outer shell 1, leaving space for the installation of the arc-shaped strip 9. One end of the arc-shaped strip 9 extends along the outer wall of the flame arresting core 3 to the front end of the inner side of the gas accumulator 4. When the gas wave generated by the flame bursts enters the interior of the conical cylinder 2, the conical cylinder 2 guides most of the accumulated gas wave along the arc-shaped strip 9 into the interior of the gas accumulator 4. Since the internal structure of the gas accumulator 4 is a spiral structure, the gas wave begins to move along the spiral structure inside the gas accumulator 4. At this time, the outer side of the flame arresting core 3 is pushed by the gas wave, and the flame arresting core... One end of the rotating rod 8 is sleeved on the outside of the receiving pipe 7 at the front of the rotating frame 6. The flame arrestor core 3 starts to rotate. When the dust or impurities adhering to the outside of the flame arrestor core 3 are continuously rotated, they will be shaken off, thus helping the flame arrestor core 3 to remain relatively clean. If the flame enters from the other end of the outer shell 1, the flame will first contact the contact plate 52. The contact plate 52 will divide the impacting flame into many small flames. At the same time, the flame extension tube 53 can extend the movement path of the flame, which will reduce the intensity of the flame transmission inside the flame extension tube 53. This is the working principle of the rotary flame arrestor.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rotary flame arrester, comprising: The outer shell (1) is characterized in that a flame arrester core (3) is provided in the middle of the interior of the outer shell (1), a conical cylinder (2) is sleeved on the outer side of one end of the flame arrester core (3), an arc strip (9) is glued to the upper and lower ends of the inner side of the conical cylinder (2), an air storage cylinder (4) is sleeved on the other end of the outer side of the flame arrester core (3), a rotating frame (6) is fixed on one end of the inner side of the air storage cylinder (4), a receiving pipe (7) is arranged horizontally in the middle of the inner side of the rotating frame (6), and a rotating rod (8) is inserted horizontally into the inner side of the receiving pipe (7). An auxiliary structure (5) is provided at the other end of the inner side of the outer shell (1).

2. A rotary flame arrester according to claim 1, characterized in that, The receiving pipe (7) and the rotating rod (8) are in rotational motion, and an air guiding cavity is opened on the inner side of the arc-shaped strip (9).

3. A rotary flame arrester according to claim 1, characterized in that, The front end of the inner side of the air storage cylinder (4) is provided with a spiral structure.

4. A rotary flame arrester according to claim 1, characterized in that, The port of the arc-shaped strip (9) extending outward is flush with the port of the spiral structure inside the air accumulator (4).

5. A rotary flame arrester according to claim 1, characterized in that, The maximum diameter of the conical cylinder (2) is slightly larger than the diameter of the front end of the flame arrester core (3).

6. A rotary flame arrester according to claim 1, characterized in that, The auxiliary structure (5) includes a furnace shell (51), a flame-trigger plate (52), and a flame-tracing tube (53). The furnace shell (51) is provided at the other end of the inner side of the outer shell (1). The flame-tracing tube (53) is provided on the inner side of the furnace shell (51). The flame-trigger plate (52) is fixed at one end of the furnace shell (51). Multiple cylindrical path spaces are opened on the inner sides of the flame-trigger plate (52) and the flame-tracing tube (53).

7. A rotary flame arrester according to claim 6, characterized in that, The flame extension tube (53) and the furnace shell (51) are bulging in shape.

Images