A sealed pipe arrester capable of preventing deflagration

Abstract

The utility model relates to fire -resisting technology field, and specifically disclose a kind of sealed pipeline fire arrester of anti-explosion, by fire -resisting device design, by filter plate to the impurity in flame is filtered, protect fire -resisting structure, stable medium flow, avoid the risk of " detonation", fire -resisting frame body is fixed to fire -resisting element, by fire -resisting element to this play through " flame quenching mechanism, directly cut off flame propagation, through " block backfire path", prevent flame reverse ignition, guarantee the balance of medium circulation and fire -resisting function, sealing device is arranged at the outside of fire -resisting shell, by sealing device to this play the leakage diffusion of blocking explosive medium or flame, contain accident expansion, block " unburnt combustible medium leak, prevent external deflagration, stop " high temperature flame / flue gas leak, prevent external fire, maintain the working environment of fire -resisting core, ensure that fire -resisting efficiency is not ineffective, limit airflow direction.

Description

Technical Field

[0001] This utility model relates to the field of fire arrestor technology, specifically a sealed pipeline fire arrestor that can prevent explosion and combustion. Background Technology

[0002] Flame arresters for sealed pipelines that can prevent explosions are key safety protection devices in industrial pipeline systems. Their core function is to prevent the spread of flames in pipelines through explosive mixtures of flammable gases, vapors, or dust with air. At the same time, they prevent media leakage through their sealing design. They are widely used in fields with flammable and explosive risks, such as petroleum, chemical, gas, and pharmaceutical industries, and are an important barrier to ensure production safety.

[0003] Existing sealed pipeline flame arresters have certain shortcomings in the face of deflagration, so a new design has been developed to address this issue. Utility Model Content

[0004] To solve the problems mentioned above, this utility model is achieved through the following technical solution: a sealed pipeline flame arrester that can prevent explosion and combustion, including a flame arresting device, wherein a sealing device is fixedly connected to the outside of the flame arresting device; The flame arresting device includes a flame arresting housing. A first port is fixedly connected to one side of the outer surface of the flame arresting housing, and a second port is fixedly connected to the outer surface of the flame arresting housing away from the first port. A filter plate is fixedly connected to one side of the inner wall of the flame arresting housing. The filter plate filters impurities in the flame, protects the flame arresting structure, stabilizes the flow of the medium, and avoids the risk of "detonation." A flame arresting frame is fixedly connected to the inner wall of the flame arresting housing near the filter plate. A flame arresting element is fixedly connected to the inner side of the flame arresting frame. The flame arresting element thereby directly cuts off the flame propagation through a "flame quenching" mechanism. By "blocking the backfire path," it prevents the flame from igniting in reverse, ensuring a balance between medium flow and flame arresting function. The side of the flame arresting shell near the second pipe opening is fixedly connected to the outside of the sealing device. This serves to block the leakage and spread of explosive medium or flame, curb the expansion of the accident, block the leakage of "unburned combustible medium," prevent external deflagration, prevent the leakage of "high-temperature flame / smoke," prevent external fires, maintain the working environment of the flame arresting core, ensure that the flame arresting performance does not fail, limit the airflow direction, avoid "ineffective paths" that cause flame arresting failure, limit the leakage of high-temperature medium after deflagration, and reduce external fires.

[0005] Preferably, a guide plate is fixedly connected to the inner wall of the flame arrestor shell near the first port. This serves to force uniform airflow distribution, prevent flame arrestor failure due to excessive local flow velocity, eliminate the jet effect, avoid excessively high local flow velocity, balance pressure distribution, prevent flammable media residue in the airflow dead zone, pre-treat flame morphology, and reduce the instantaneous load on the flame arrestor core. An isolation mechanism is fixedly connected to the inner wall of the flame arrestor shell near the guide plate. This serves to construct a multi-layer flame quenching barrier, significantly improve flame arrestor reliability, cope with extreme combustion scenarios, expand the scope of flame arrestor application, ensure long-term operational stability, and reduce the risk of functional degradation.

[0006] Preferably, the isolation mechanism includes an isolation shell, the outer side of which is fixedly connected to the inner wall of the flame arrestor shell. An upper side plate is fixedly connected to one side of the inner wall of the isolation shell, and a lower side plate is fixedly connected to the side of the inner wall of the isolation shell away from the upper side plate. The flame enters the interior of the isolation shell from the upper side plate and flows to the lower side plate, thereby forcing the flame to "detour", lengthening the propagation path, enhancing "heat exchange", rapidly cooling the flame, dividing the flame front, and weakening the combustion intensity. This adapts to low flow rate and high safety scenarios, balances "flame arrest" and "medium flow", reduces medium flow resistance, and ensures normal delivery.

[0007] Preferably, the sealing device includes a sealing shell, the outer side of which is fixedly connected to the outer side of the flame arrestor shell. An electric push rod is fixedly connected to the outer side of the sealing shell away from the flame arrestor shell. The electric push rod controls the sealing plate to dock, thereby closing the pipeline, blocking the "secondary spread after flame penetration" and "backfire", compensating for the protective limitations of the flame arrestor core, quickly blocking "penetrating flame", preventing downstream fire, eliminating "backfire after flame arrest", preventing secondary explosion of upstream medium, controlling "explosion pressure during flame arrest", avoiding overpressure damage to the flame arrestor and pipeline, and working with the pressure relief device to achieve coordinated protection of "flame arrest first, pressure control later", protecting the downstream system and simplifying the "post-accident handling" process. A cover plate is fixedly connected to the outer side of the electric push rod near the sealing shell, a connecting plate is fixedly connected to the outer side of the cover plate away from the electric push rod, a sealing plate is fixedly connected to the outer side of the connecting plate away from the electric push rod, and a buffer mechanism is fixedly connected to the inner side of the sealing plate.

[0008] Preferably, the buffer mechanism includes a connecting rod, with a spring strip sleeved on the outer side of the connecting rod. A buffer plate is fixedly connected to the outer side of the connecting rod away from the sealing plate. When the buffer plate is compressed, it controls the connecting rod to contract the spring strip, thereby playing a role in shock absorption and buffering. This absorbs the instantaneous impact force during rapid closing / opening, preventing structural damage, avoiding rigid impact between sealing plates, mitigating the end impact of hydraulic actuators, controlling the stability of the action speed, preventing speed fluctuations from affecting the flame-retardant effect, improving sealing reliability, preventing seal failure caused by instantaneous pressure impact, reducing equipment wear, and extending the service life of components.

[0009] Preferably, a silicone block is fixedly connected to the outer side of the buffer plate away from the connecting rod. The silicone block is made of high-temperature resistant silicone material and has good wear resistance and cushioning effect. This reduces rigid collisions between components, reduces wear between components, and extends the service life of the components. The outer side of the silicone block away from the connecting rod has a groove to enhance the deformation performance of the components, thereby further improving the cushioning effect and protection of the components. Beneficial effects

[0010] This invention provides a sealed pipeline flame arrestor that can prevent explosions and fires. It has the following beneficial effects: 1. This explosion-proof sealed pipeline flame arrester, through its flame arrestor design, filters impurities in the flame using a filter plate, protecting the flame arrestor structure, stabilizing media flow, avoiding the risk of "detonation," and fixing the flame arrestor element with the flame arrestor frame. The flame arrestor element directly cuts off flame propagation through a "flame quenching" mechanism and prevents backfire by "blocking the backfire path," thus ensuring a balance between media flow and flame arrestor function.

[0011] 2. This explosion-proof sealed pipeline flame arrester, through its isolation mechanism design, forces the flame to "detour," lengthens the propagation path, enhances "heat exchange," rapidly cools the flame, divides the flame front, and weakens the combustion intensity. This allows it to adapt to low-flow-rate, high-safety scenarios, balance "flame arrest" and "medium flow," reduce medium flow resistance, and ensure normal transportation.

[0012] 3. This explosion-proof, sealed pipeline flame arrester, through its sealing device design, achieves the function of closing the pipeline, blocking the "secondary spread after flame penetration" and "backfire," compensating for the protective limitations of the core flame arrester, quickly blocking "penetrating flames," preventing downstream ignition, eliminating "backfire after flame arrest," preventing secondary explosions of upstream media, controlling "explosion pressure during flame arrest," avoiding overpressure damage to the flame arrester and pipeline, and, in conjunction with a pressure relief device, achieving coordinated protection of "flame arrest first, pressure control later," protecting downstream systems, and simplifying the "post-accident handling" process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the explosion-proof sealed pipeline flame arrester of this utility model; Figure 2 This is a schematic cross-sectional view of the flame arrestor device of this utility model; Figure 3 This is a schematic cross-sectional view of the isolation mechanism of this utility model; Figure 4 This is a schematic cross-sectional view of the sealing device of this utility model; Figure 5 This is a schematic diagram of the buffer mechanism of this utility model.

[0014] In the diagram: 1. Flame arrestor; 2. Sealing device; 11. Flame arrestor housing; 12. First port; 13. Second port; 14. Isolation mechanism; 15. Filter plate; 16. Flame arrestor frame; 17. Flame arrestor element; 18. Guide plate; 141. Isolation housing; 142. Upper side plate; 143. Lower side plate; 21. Sealing housing; 22. Cover plate; 23. Connecting plate; 24. Electric push rod; 25. Sealing plate; 26. Buffer mechanism; 261. Connecting rod; 262. Spring strip; 263. Buffer plate; 264. Silicone block; 265. Block groove. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-3 This utility model provides a technical solution: a sealed pipeline flame arrester that can prevent explosion and combustion, including a flame arresting device 1, and a sealing device 2 fixedly connected to the outside of the flame arresting device 1. The flame arresting device 1 includes a flame arresting housing 11. A first port 12 is fixedly connected to one side of the flame arresting housing 11. A second port 13 is fixedly connected to the side of the flame arresting housing 11 away from the first port 12. A filter plate 15 is fixedly connected to one side of the inner wall of the flame arresting housing 11. A flame arresting frame 16 is fixedly connected to the side of the inner wall of the flame arresting housing 11 near the filter plate 15. A flame arresting element 17 is fixedly connected to the inner side of the flame arresting frame 16. The side of the flame arresting housing 11 near the second port 13 is fixedly connected to the outer side of the sealing device 2. The flame enters the interior of the flame arrestor housing 11 from the first port 12. Impurities in the flame are filtered by the filter plate 15, protecting the flame arrestor structure, stabilizing the flow of the medium, and avoiding the risk of "detonation". The flame arrestor frame 16 fixes the flame arrestor element 17. The flame arrestor element 17 directly cuts off the flame propagation through the "flame quenching" mechanism and prevents the flame from igniting backward by "blocking the backfire path", ensuring the balance between the flow of the medium and the flame arrestor function. The sealing device 2 is set on the outside of the flame arrestor housing 11. The sealing device 2 blocks the leakage and spread of explosive medium or flame, curbs the expansion of the accident, blocks the leakage of "unburned combustible medium", prevents external deflagration, prevents the leakage of "high temperature flame / smoke", prevents external fire, maintains the working environment of the flame arrestor core, ensures that the flame arrestor performance does not fail, limits the airflow direction, avoids "ineffective paths" that cause the flame arrestor to fail, limits the leakage of high temperature medium after deflagration, and reduces external fire.

[0017] A guide plate 18 is fixedly connected to the inner wall of the flame arrestor housing 11 near the first port 12, and an isolation mechanism 14 is fixedly connected to the inner wall of the flame arrestor housing 11 near the guide plate 18. The guide plate 18 serves to force a uniform distribution of airflow, prevent flame arrestor failure due to excessive local flow velocity, eliminate the jet effect, prevent excessively high local flow velocity, balance pressure distribution, prevent flammable media residue in the airflow dead zone, pre-treat the flame shape, and reduce the instantaneous load on the flame arrestor core. The isolation mechanism 14 serves to construct a multi-layer flame quenching barrier, significantly improve the reliability of the flame arrestor, cope with extreme combustion scenarios, expand the application range of the flame arrestor, ensure long-term operational stability, and reduce the risk of functional degradation.

[0018] The isolation mechanism 14 includes an isolation shell 141. The outer side of the isolation shell 141 is fixedly connected to the inner wall of the flame arrestor shell 11. An upper side plate 142 is fixedly connected to one side of the inner wall of the isolation shell 141, and a lower side plate 143 is fixedly connected to the side of the inner wall of the isolation shell 141 away from the upper side plate 142. The flame enters the interior of the isolation shell 141 from the upper side plate 142 and flows to the lower side plate 143, thereby forcing the flame to "detour", lengthening the propagation path, enhancing "heat exchange", rapidly cooling the flame, dividing the flame front, and weakening the combustion intensity. This adapts to low flow rate and high safety scenarios, balances "flame arrest" and "medium flow", reduces medium flow resistance, and ensures normal delivery.

[0019] Please see Figure 4-5 The sealing device 2 includes a sealing housing 21. The outer side of the sealing housing 21 is fixedly connected to the outer side of the flame arrestor housing 11. An electric push rod 24 is fixedly connected to the outer side of the sealing housing 21 away from the flame arrestor housing 11. A cover plate 22 is fixedly connected to the outer side of the electric push rod 24 near the sealing housing 21. A connecting plate 23 is fixedly connected to the outer side of the cover plate 22 away from the electric push rod 24. A sealing plate 25 is fixedly connected to the outer side of the connecting plate 23 away from the electric push rod 24. A buffer mechanism 26 is fixedly connected to the inner side of the sealing plate 25. The sealing plate 25 is connected by the electric push rod 24 to close the pipeline, blocking the secondary spread of flame penetration and backfire, making up for the protection limitations of the flame arrestor core, quickly blocking the penetrating flame, preventing downstream fire, eliminating backfire after flame arrest, preventing secondary explosion of upstream medium, controlling the explosion pressure during the flame arrest process, avoiding overpressure damage to the flame arrestor and pipeline, and working with the pressure relief device to achieve coordinated protection of "flame arrest first, pressure control later", protecting the downstream system, simplifying the "post-accident handling" process, and the cover plate 22 serves to fit the sealing shell 21 to prevent material leakage.

[0020] The buffer mechanism 26 includes a connecting rod 261, with a spring strip 262 sleeved on the outer side of the connecting rod 261. A buffer plate 263 is fixedly connected to the outer side of the connecting rod 261 away from the sealing plate 25. As the sealing plates 25 are aligned, the buffer plate 263 is compressed, causing the connecting rod 261 to contract against the spring strip 262. This serves to dampen shocks and absorb the instantaneous impact force during rapid closing / opening, preventing structural damage, avoiding rigid impact between the sealing plates 25, mitigating the end-of-life impact of the hydraulic actuator, controlling the stability of the operating speed, preventing speed fluctuations from affecting the flame-retardant effect, improving sealing reliability, preventing seal failure caused by instantaneous pressure shocks, reducing equipment wear, and extending the service life of components.

[0021] A silicone block 264 is fixedly connected to the outer side of the buffer plate 263 away from the connecting rod 261. A groove 265 is formed on the outer side of the silicone block 264 away from the connecting rod 261. The silicone block 264 is made of high-temperature resistant silicone material, which also has good wear resistance and cushioning effect, thereby reducing rigid collisions between components, reducing wear between components, and extending the service life of the components. Furthermore, the groove 265 enhances the deformation performance of the components, further improving the cushioning effect and protective function of the components.

[0022] During operation, the flame enters the flame arrestor housing 11 from the first port 12. Impurities in the flame are filtered by the filter plate 15, protecting the flame arrestor structure, stabilizing the medium flow, and preventing the risk of "detonation." The flame arrestor frame 16 fixes the flame arrestor element 17, which, through a "flame quenching" mechanism, directly cuts off flame propagation and prevents backfire by "blocking the backfire path," ensuring a balance between medium flow and flame arrestor function. Simultaneously, an isolation mechanism 14 is installed inside the flame arrestor housing 11, which forces the flame to "detour," lengthening the propagation path, enhancing "heat exchange," and rapidly cooling the flame. The flame is divided at the flame front, weakening the combustion intensity, thus adapting to low flow rate and high safety scenarios, balancing "flame arrest" and "medium flow", reducing medium flow resistance, and ensuring normal delivery. The sealing device 2 is set on the outside of the flame arrestor housing 11. The sealing device 2 is used to block the leakage and spread of explosive media or flames, curb the expansion of accidents, block the leakage of "unburned combustible media", prevent external deflagration, prevent the leakage of "high temperature flame / smoke", prevent external fires, maintain the working environment of the flame arrestor core, ensure that the flame arrestor performance does not fail, limit the airflow direction, avoid "ineffective paths" that cause flame arrestor failure, limit the leakage of high temperature media after deflagration, and reduce external fires.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed pipeline flame arrester capable of preventing explosion and combustion, characterized in that, It includes a flame arrestor (1), and a sealing device (2) is fixedly connected to the outside of the flame arrestor (1). The flame arresting device (1) includes a flame arresting housing (11), a first port (12) is fixedly connected to one side of the flame arresting housing (11), a second port (13) is fixedly connected to the side of the flame arresting housing (11) away from the first port (12), a filter plate (15) is fixedly connected to one side of the inner wall of the flame arresting housing (11), a flame arresting frame (16) is fixedly connected to the side of the inner wall of the flame arresting housing (11) close to the filter plate (15), a flame arresting element (17) is fixedly connected to the inner side of the flame arresting frame (16), and the side of the flame arresting housing (11) close to the second port (13) is fixedly connected to the outer side of the sealing device (2).

2. The explosion-proof sealed pipeline flame arrester according to claim 1, characterized in that: A guide plate (18) is fixedly connected to the inner wall of the fire-resistant housing (11) near the first port (12), and an isolation mechanism (14) is fixedly connected to the inner wall of the fire-resistant housing (11) near the guide plate (18).

3. A sealed pipeline flame arrester capable of preventing explosion-proof combustion according to claim 2, characterized in that: The isolation mechanism (14) includes an isolation housing (141), the outer side of which is fixedly connected to the inner wall of the fire-resistant housing (11), an upper side plate (142) is fixedly connected to one side of the inner wall of the isolation housing (141), and a lower side plate (143) is fixedly connected to the side of the inner wall of the isolation housing (141) away from the upper side plate (142).

4. A sealed pipeline flame arrester capable of preventing explosion-proof combustion according to claim 1, characterized in that: The sealing device (2) includes a sealing housing (21), the outer side of which is fixedly connected to the outer side of the flame arrestor housing (11). An electric push rod (24) is fixedly connected to the outer side of the sealing housing (21) away from the flame arrestor housing (11). A cover plate (22) is fixedly connected to the outer side of the electric push rod (24) near the sealing housing (21). A connecting plate (23) is fixedly connected to the outer side of the cover plate (22) away from the electric push rod (24). A sealing plate (25) is fixedly connected to the outer side of the connecting plate (23) away from the electric push rod (24). A buffer mechanism (26) is fixedly connected to the inner side of the sealing plate (25).

5. A sealed pipeline flame arrester capable of preventing explosion-proof combustion according to claim 4, characterized in that: The buffer mechanism (26) includes a connecting rod (261), a spring strip (262) is sleeved on the outside of the connecting rod (261), and a buffer plate (263) is fixedly connected to the side of the connecting rod (261) away from the sealing plate (25).

6. A sealed pipeline flame arrester capable of preventing explosion-proof combustion according to claim 5, characterized in that: A silicone block (264) is fixedly connected to the side of the buffer plate (263) away from the connecting rod (261), and a groove (265) is formed on the side of the silicone block (264) away from the connecting rod (261).

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