Flame arrester for chemical safety production

Abstract

The utility model discloses a flame arrester for chemical safety production, which belongs to the technical field of flame arresters and comprises a pair of pipeline connecting components, a flame arresting core component is mounted between the pipeline connecting components, and the pipeline connecting components are fixed through bolts and nuts. The pipeline connecting assembly comprises a connecting pipe, a spring steel corrugated connecting ring, a connecting ring and a flange, the fire-retardant core assembly can be directly detached from the pipeline connecting assembly, then personnel can detach and replace the internal fire-retardant core body, the operation steps during maintenance and replacement are greatly simplified, the labor burden of maintenance personnel is reduced, and the maintenance efficiency is improved. When maintenance and replacement are completed and the fire retardant core assembly is installed, along with continuous reinforcement of the bolt and the nut, the spring steel corrugated connecting ring elastically extends and stretches again, the installed bolt and the installed nut are not prone to loosening through the spring steel corrugated connecting ring elastically extending and stretching, and the installation stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flame arresters, and more specifically to a flame arrester for safe production of chemical industry. Background Art

[0002] The flame arrester is one of the devices that plays a fire prevention role in petrochemical production safety projects. The flame arrester is mainly composed of a flame arrester core, a flame arrester shell and accessories. The working principle of the flame arrester is: one of the necessary conditions for combustion is to reach a certain temperature, that is, the ignition point. Below the ignition point, the combustion will stop. According to this principle, as long as the temperature of the burning material is reduced below its ignition point, the spread of the flame can be prevented. When the flame passes through many small channels of the fire arrester element, it will become several small flames. When designing the flame arrester core inside the flame arrester, the contact area between the small flame and the channel wall is expanded as much as possible, the heat transfer is enhanced, and the flame temperature is reduced below the ignition point, thereby preventing the flame from spreading. However, conventional flame arresters usually only use flame arrester cores as the main component to achieve the role of fire prevention and safe production.

[0003] For example: Publication No. CN211705678U discloses a flame arrester, including a left shell and a right shell, the left end of the left shell and the right end of the right shell are both provided with flanges, the right end of the left shell and the left end of the right shell are both provided with connecting plates, fire arrester units are provided in the left shell and the right shell, a plurality of parallel metal plates are provided between the fire arrester units, a cooling layer is provided on the outside of the left shell and the right shell, and a water inlet and a water outlet are provided on the cooling layer. The utility model has a novel structure, a reasonable design and a low cost. The flame arrester is installed on the pipeline through a flange. When combustion occurs, the flame arrester unit of the flame arrester can effectively block the propagation of flames, promote flame quenching, and has a fast flame arresting speed and high flame arresting efficiency. The cooling layer outside the shell of the flame arrester reduces the temperature of the flame arrester, effectively avoids damage to the pipeline caused by the excessively high temperature of the flame arrester, and ensures the normal operation of the device, but the flame arrester has the following disadvantages in actual use:

[0004] The existing flame arrester is generally composed of a shell and a fire arrester core. The shell completely wraps the fire arrester core, and the fire arrester core is installed inside the shell. Therefore, when the fire arrester core needs to be disassembled and replaced for inspection and maintenance, the flame arrester needs to be removed from the pipeline as a whole, and then the flame arrester is disassembled before the fire arrester core can be disassembled and replaced. It is not convenient to directly disassemble and replace the fire arrester core. The replacement process is extremely cumbersome and the workload is large, which will greatly increase the labor burden of maintenance personnel. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a flame arrester for chemical production safety, which solves the problem in the prior art that when the fire arrester core needs to be disassembled and replaced for inspection and maintenance, it is inconvenient to directly disassemble and replace the fire arrester core, the replacement process is extremely cumbersome, the engineering workload is large, and the labor burden of maintenance personnel is greatly increased.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A flame arrester for chemical production safety, comprising a pipeline connection assembly, a fire arrester core assembly is installed between a pair of the pipeline connection assemblies, and the pair of the pipeline connection assemblies are fixed by bolts and nuts;

[0010] The pipeline connection assembly comprises a connection pipe, a spring steel corrugated connection ring, a connection ring and a flange, one end of the connection pipe is fixedly connected to the spring steel corrugated connection ring, one end of the spring steel corrugated connection ring is fixedly connected to the connection ring, and the outer circumferential surface of the connection ring is fixedly connected to the flange;

[0011] The fire-retardant core assembly comprises an annular outer shell and a fire-retardant core body, and the fire-retardant core body is installed in the inner cavity of the annular outer shell.

[0012] Furthermore, the annular shell includes a shell, a connecting cover, a hollow connecting piece, a gas monitor and an audible and visual alarm. A pair of connecting covers are fixedly connected to the outer circumferential surface of the shell, and the pair of connecting covers are connected by a hollow connecting piece. The upper end of the hollow connecting piece is fixedly connected to the gas monitor and the audible and visual alarm, and the gas monitor and the audible and visual alarm are electrically connected.

[0013] Furthermore, a pair of positioning members are fixedly connected to the outer circumferential surface of the annular shell, and one end of the bolt passes through the positioning member.

[0014] Furthermore, both ends of the shell and one end of a pair of connecting covers are fixedly connected with elastic sealing rings.

[0015] Furthermore, the initial width between a pair of the pipe connection assemblies is greater than the thickness of the fire-blocking core assembly.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) In this scheme, when disassembling and replacing the fire-blocking core, there is no need to disassemble the pipe connection assembly from the pipe, and the bolts and nuts can be directly removed. After the bolts and nuts are removed, the spring steel corrugated connecting ring will elastically recover and shrink. At this time, the spacing between the pipe connection assemblies is greater than the thickness of the fire-blocking core assembly. In this way, the fire-blocking core assembly can be directly disassembled from between the pipe connection assemblies, and then the personnel can disassemble and replace the internal fire-blocking core, which greatly simplifies the operation steps during maintenance and replacement and reduces the labor burden of maintenance personnel. When the maintenance and replacement is completed and the fire-blocking core assembly is installed, as the bolts and nuts are continuously reinforced, the spring steel corrugated connecting ring will elastically stretch again. At this time, the elastically stretched spring steel corrugated connecting ring can prevent the bolts and nuts from loosening after installation, greatly improving the stability of the installation.

[0019] (2) In this solution, when gas leakage occurs between the pipe connection assembly and the shell, the leaked gas will first enter the space formed by the connection cover and the pipe connection assembly to prevent the gas from quickly dissipating in the air. Since the connection cover and the hollow connector are connected, the gas will also be evenly distributed in the hollow connector. When the gas monitor detects gas inside the hollow connector, it will automatically activate the sound and light alarm to sound an alarm, reminding the staff to come for inspection and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a structural schematic diagram of the fire-retardant core assembly of the utility model in a disassembled state;

[0022] Figure 3 This is a schematic diagram of the structure of the fire-retardant core assembly of the utility model;

[0023] Figure 4 It is a schematic structural diagram of the overall cross-section of the utility model.

[0024] Figure numerals: 1. Pipe connection assembly; 11. Connecting pipe; 12. Spring steel corrugated connecting ring; 13. Connecting ring; 14. Flange; 2. Fire-blocking core assembly; 21. Annular shell; 211. Shell; 212. Connecting cover; 213. Hollow connecting piece; 214. Gas monitor; 215. Sound and light alarm; 216. Positioning piece; 217. Elastic sealing ring; 22. Fire-blocking core; 3. Bolt; 4. Nut. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Example

[0027] like Figure 1-4 As shown, a flame arrester for chemical production safety comprises a pipeline connection assembly 1, a fire arrester core assembly 2 is installed between a pair of pipeline connection assemblies 1, and the pair of pipeline connection assemblies 1 are fixed by bolts 3 and nuts 4;

[0028] The pipeline connection assembly 1 comprises a connection pipe 11, a spring steel corrugated connection ring 12, a connection ring 13 and a flange 14. One end of the connection pipe 11 is fixedly connected to the spring steel corrugated connection ring 12, one end of the spring steel corrugated connection ring 12 is fixedly connected to the connection ring 13, and the outer circumferential surface of the connection ring 13 is fixedly connected to the flange 14.

[0029] The fire-retardant core assembly 2 comprises an annular outer shell 21 and a fire-retardant core body 22 . The fire-retardant core body 22 is installed in the inner cavity of the annular outer shell 21 .

[0030] When disassembling and replacing the fire-blocking core 22, there is no need to disassemble the pipe connecting assembly 1 from the pipe, and the bolts 3 and nuts 4 can be directly removed. After the bolts 3 and nuts 4 are removed, the spring steel corrugated connecting ring 12 will elastically recover and retract. At this time, the spacing between the pipe connecting assemblies 1 is greater than the thickness of the fire-blocking core assembly 2. In this way, the fire-blocking core assembly 2 can be directly disassembled from between the pipe connecting assemblies 1, and then the personnel can disassemble and replace the internal fire-blocking core 22, which greatly simplifies the operating steps during maintenance and replacement, and reduces the labor burden of maintenance personnel. When the maintenance and replacement is completed and the fire-blocking core assembly 2 is installed, as the bolts 3 and nuts 4 are continuously reinforced, the spring steel corrugated connecting ring 12 will elastically stretch again. At this time, the elastically stretched and stretched spring steel corrugated connecting ring 12 can make the bolts 3 and nuts 4 not easy to loosen after installation, greatly improving the stability of the installation.

[0031] like Figure 1-3 As shown, the annular shell 21 includes a shell 211, a connecting cover 212, a hollow connector 213, a gas monitor 214 and an audible and visual alarm 215. A pair of connecting covers 212 are fixedly connected to the outer circumferential surface of the shell 211. The pair of connecting covers 212 are connected by a hollow connector 213. The upper end of the hollow connector 213 is fixedly connected to the gas monitor 214 and the audible and visual alarm 215. The gas monitor 214 and the audible and visual alarm 215 are electrically connected.

[0032] When gas leakage occurs between the pipe connection component 1 and the shell 211, the leaked gas will first enter the space formed by the connecting cover 212 and the pipe connection component 1 to prevent the gas from quickly dissipating in the air. Since the connecting cover 212 and the hollow connector 213 are connected, the gas will also be evenly distributed in the hollow connector 213. When the gas monitor 214 detects gas inside the hollow connector 213, the sound and light alarm 215 will be automatically activated to sound an alarm, reminding the staff to come for inspection and reduce safety hazards.

[0033] like Figure 2-4 As shown, a pair of positioning members 216 are fixedly connected to the outer circumferential surface of the annular housing 21 , and one end of the bolt 3 passes through the positioning member 216 .

[0034] When in use, during the installation of the fire-blocking core assembly 2, the bolt 3 will penetrate the positioning piece 216 on the outer circumferential surface of the fire-blocking core assembly 2, thereby making it difficult for the fire-blocking core assembly 2 to shift during installation, thereby improving the installation accuracy.

[0035] like Figure 3 As shown, both ends of the housing 211 and one end of a pair of connecting covers 212 are fixedly connected with elastic sealing rings 217 .

[0036] When in use, the elastic sealing rings 217 at both ends of the shell 211 improve the sealing between the shell 211 and the pipe connection component 1, thereby reducing the possibility of gas leakage. The elastic sealing ring 217 at one end of the connecting cover 212 improves the sealing between the connecting cover 212 and the pipe connection component 1, making it difficult for the leaked gas to dissipate quickly in the air, thereby facilitating monitoring.

[0037] like Figure 2 As shown, the initial width between a pair of pipe connection assemblies 1 is greater than the thickness of the fire-blocking core assembly 2 .

[0038] When in use, since the initial width between the pipe connection components 1 is greater than the thickness of the fire-blocking core component 2 , it is convenient for personnel to disassemble and assemble the fire-blocking core component 2 .

[0039] In summary, the specific working process of the present scheme is as follows: when disassembling and replacing the fire-blocking core 22, there is no need to disassemble the pipe connection assembly 1 from the pipe, and the bolts 3 and nuts 4 can be directly removed. After the bolts 3 and nuts 4 are removed, the spring steel corrugated connecting ring 12 will elastically recover and retract. At this time, the spacing between the pipe connection assemblies 1 is greater than the thickness of the fire-blocking core assembly 2. In this way, the fire-blocking core assembly 2 can be directly disassembled from between the pipe connection assemblies 1, and then the personnel can disassemble and replace the internal fire-blocking core 22, which greatly simplifies the operating steps during maintenance and replacement, and reduces the labor burden of maintenance personnel. When the maintenance and replacement is completed and the fire-blocking core assembly 2 is installed, as the bolts 3 and nuts 4 are continuously reinforced, the spring steel corrugated connecting ring 12 will elastically stretch and stretch again. At this time, the elastically stretched and stretched spring steel corrugated connecting ring 12 can make the bolts 3 and nuts 4 not easy to loosen after installation, thereby greatly improving the stability of the installation.

[0040] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A flame arrester for chemical production safety, comprising a pipeline connection assembly (1), characterized in that: A fire-retardant core assembly (2) is installed between the pair of pipe connection assemblies (1), and the pair of pipe connection assemblies (1) are fixed together by bolts (3) and nuts (4); The pipeline connection assembly (1) comprises a connection pipe (11), a spring steel corrugated connection ring (12), a connection ring (13) and a flange (14); one end of the connection pipe (11) is fixedly connected to the spring steel corrugated connection ring (12); one end of the spring steel corrugated connection ring (12) is fixedly connected to the connection ring (13); and the outer circumferential surface of the connection ring (13) is fixedly connected to the flange (14); The fire-retardant core assembly (2) comprises an annular outer shell (21) and a fire-retardant core body (22), wherein the fire-retardant core body (22) is installed in the inner cavity of the annular outer shell (21).

2. A flame arrester for chemical production safety according to claim 1, characterized in that: The annular housing (21) comprises a shell (211), a connection cover (212), a hollow connector (213), a gas monitor (214) and an audible and visual alarm (215); a pair of connection covers (212) are fixedly connected to the outer circumferential surface of the shell (211); the pair of connection covers (212) are connected via a hollow connector (213); the upper end of the hollow connector (213) is fixedly connected to the gas monitor (214) and the audible and visual alarm (215); and the gas monitor (214) and the audible and visual alarm (215) are electrically connected.

3. A flame arrester for chemical production safety according to claim 1, characterized in that: A pair of positioning members (216) are fixedly connected to the outer circumferential surface of the annular housing (21), and one end of the bolt (3) passes through the positioning member (216).

4. A flame arrester for chemical production safety according to claim 2, characterized in that: Both ends of the housing (211) and one end of a pair of connecting covers (212) are fixedly connected with elastic sealing rings (217).

5. A flame arrester for chemical production safety according to claim 1, characterized in that: The initial width between the pair of pipe connection components (1) is greater than the thickness of the fire-retardant core component (2).

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