Safety protection device for chemical production

Abstract

The utility model discloses a chemical production safety protection device which comprises a connecting shell, one side of the connecting shell is movably connected with a first outer shell, the other side of the connecting shell is detachably connected with a second outer shell, the first outer shell is detachably connected with the second outer shell, the first outer shell is provided with a fixing assembly, the fixing assembly comprises a fixing plate, and the fixing plate is fixedly connected with the connecting shell. The fixing plate is slidably connected to the first shell, a threaded hole is formed in the first shell, a fixing rod is in threaded connection with the interior of the threaded hole, two sets of separation rings are detachably connected into the connecting shell, fire retardant assemblies are arranged in the two sets of separation rings, and a flow limiting assembly is arranged in the second shell. The flame arrester has the advantages that through the fixing assembly and the flame arresting assembly, the flame arrester can prevent flame propagation of explosive gas mixtures of corresponding grades, meanwhile, flow resistance loss is reduced as much as possible, and normal operation of a pipeline system is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production technology, and in particular relates to safety protection devices for chemical production. Background Technology

[0002] Safety protection in chemical production mainly includes protective facilities and personnel protection. Chemical enterprises must establish a comprehensive protective facility system, including safety, fire prevention, explosion prevention, and poison prevention equipment and facilities, to ensure the normal operation of equipment and reduce the occurrence of safety accidents. In pipelines transporting flammable gases, when the flammable gas is ignited, the flame may spread rapidly throughout the entire pipeline network, causing serious fire and explosion accidents. Therefore, flame arresters are needed to block the flame inside the flame arrester, thereby preventing the spread of the flame. Publication number: CN115445122A discloses a flame arrester, including a shell, the interior of which is composed of flame-retardant zones. Connecting blocks are provided on both sides, and connecting pipes are provided on the opposite sides of the connecting blocks. Connecting discs are installed on the connecting pipes. This flame arrester connects the device to the pipes on both sides using the connecting discs. When a fire breaks out in one of the pipes, the fire source will be blocked by the flame-retardant zone, thus achieving the purpose of flame arrest. Furthermore, by setting up guiding devices and buffering devices, it can effectively retard flames and buffer the flame-retardant area at the same time. This avoids the common problem in existing flame arresters where the internal flame-retardant elements are punctured or deformed by the strong airflow generated by an explosion, causing the flame arrester to lose its flame-retardant function.

[0003] However, existing technologies have some problems: the flame arrestor layer inside existing flame arrestors is usually fixed and cannot be changed according to the actual use environment and the explosion level of the gas medium. When the flame arrestor layer is too thin, it cannot effectively retard the pipeline, while when the flame arrestor layer is too thick, it will increase flow resistance loss and affect the normal operation of the pipeline. Therefore, we propose a safety protection device for chemical production. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a safety protection device for chemical production. Through the fixing components and flame arrestor components, the flame arrestor can prevent the flame propagation of explosive gas mixtures of the corresponding level while minimizing flow resistance loss, so as to ensure the normal operation of the pipeline system.

[0005] This utility model is implemented as follows: a safety protection device for chemical production includes a connecting shell, a first outer shell movably connected to one side of the connecting shell, and a second outer shell detachably connected to the other side of the connecting shell. The first outer shell and the second outer shell are detachably connected. A fixing component is provided on the first outer shell, which is used to fix the connecting shell between the first outer shell and the second outer shell. Two sets of partition rings are detachably connected inside the connecting shell, and flame-arresting components are provided in the two sets of partition rings. A flow-limiting component is provided inside the second outer shell.

[0006] Optionally, the connecting shell has openings at both ends, and the first outer shell and the second outer shell are slidably connected to the two ends of the connecting shell, with corresponding mounting holes provided in the first outer shell and the second outer shell.

[0007] Optionally, it also includes a threaded rod, which passes through a mounting hole on the first housing and the second housing, and both ends of the threaded rod are threaded with a fixing nut.

[0008] Optionally, the fixing component includes a fixing plate, which is slidably connected to a first housing. The first housing has a threaded hole, and a fixing rod is threaded into the threaded hole.

[0009] Optionally, a fixing knob is fixedly connected to one end of the fixing rod, and the other end of the fixing rod is rotatably connected to the fixing plate. A sealing ring is provided between the fixing plate and the connecting shell.

[0010] Optionally, the two sets of separating rings have through holes in the middle, and fixing bolts are provided in the through holes for fixing the fire-arresting components.

[0011] Optionally, the flame-arresting assembly includes a flame-arresting core with a clearance hole in the middle. The fixing bolt passes through the clearance hole. The flame-arresting core is disposed between two sets of separating rings. A filter screen is disposed between the separating rings and the flame-arresting core. The filter screen is detachably connected to the fixing bolt.

[0012] Optionally, the current limiting component includes a current limiting ring, which is fixedly connected to the inner wall of the second housing. A spring is fixedly connected to the current limiting ring, and a current limiting ball is fixedly connected to the spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model is equipped with a flame arrestor component. The flame arrestor core, which is formed by multiple sets of flame arrestor filters stacked together, is fixed by the partition rings on both sides and the fixing bolts. At the same time, this device can determine the optimal flame arrestor layer thickness according to the actual use environment and the explosion level of the gas medium, thereby determining the number of flame arrestor filters, that is, the thickness of the flame arrestor core. This allows the flame arrestor to prevent the flame propagation of the corresponding level of explosive gas mixture while minimizing flow resistance loss, so as to ensure the normal operation of the pipeline system.

[0015] 2. This utility model is equipped with a fixing component. This device can be adjusted according to the thickness of the flame arrestor core. By loosening the fixing nut, the position of the first outer shell is adjusted so that the first and second outer shells fix the flame arrestor core and the partition ring in the middle. Then, by tightening the fixing nut, the flame arrestor core and the partition ring are firmly fixed, and the seal is strengthened. Of course, sealing rings can be set between the partition ring and the first and second outer shells respectively for further sealing. Then, by rotating the fixing knob, the fixing rod is moved to adjust the position of the fixing plate, so that the connecting shell is fixed between the first and second outer shells, and the device is further sealed.

[0016] 3. This utility model is equipped with a flow-limiting component. When chemical raw materials flow into the equipment through the flame arrester, the thrust of the chemical raw materials causes the flow-limiting ball to pull the spring and move, causing the flow-limiting ball to disengage from the flow-limiting ring, thus allowing the raw materials to pass through the flame arrester. However, when the device malfunctions and the raw materials in the pipeline burn, the flow-limiting ball will be impacted and move towards the flow-limiting ring, thereby blocking the flow-limiting ring and preventing the flame from continuing to spread through the pipeline when the flame arrester core fails to block it.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure provided by this utility model;

[0019] Figure 2 This is a cross-sectional view of the connecting shell provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the flame arrestor core provided by this utility model;

[0021] Figure 4 This is a first sectional view of the outer shell provided by this utility model;

[0022] Figure 5 This is a second sectional view of the outer shell provided by this utility model.

[0023] In the diagram: 1. Connecting shell; 2. First outer shell; 3. Second outer shell; 4. Fixing assembly; 401. Fixing plate; 402. Fixing rod; 403. Fixing knob; 5. Separating ring; 6. Flame arrestor assembly; 601. Flame arrestor core; 602. Filter screen; 7. Flow limiting assembly; 701. Flow limiting ring; 702. Spring; 703. Flow limiting ball; 8. Threaded rod; 9. Fixing nut; 10. Fixing bolt. Detailed Implementation

[0024] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] like Figures 1 to 5 As shown, the chemical production safety protection device provided in this embodiment of the utility model includes a connecting shell 1, which is cylindrical and made of stainless steel. Its main function is to connect the first outer shell 2 and the second outer shell 3 and seal them.

[0026] Furthermore, a first outer shell 2 is movably connected to one side of the connecting shell 1, and a second outer shell 3 is detachably connected to the other side of the connecting shell 1. The first outer shell 2 and the second outer shell 3 are detachably connected.

[0027] Specifically, the connecting shell 1 has openings at both ends, and the first outer shell 2 and the second outer shell 3 are slidably connected to the two ends of the connecting shell 1, respectively. The first outer shell 2 and the second outer shell 3 have corresponding mounting holes.

[0028] Furthermore, the chemical production safety protection device also includes a threaded rod 8, which passes through the mounting holes on the first outer shell 2 and the second outer shell 3. Both ends of the threaded rod 8 are threadedly connected to fixing nuts 9. There are six sets of threaded rods 8 and fixing nuts 9. Of course, the number of threaded rods 8 and fixing nuts 9 is not limited to six sets. There can also be three sets, four sets, or other numbers, as long as the device remains sealed after connection.

[0029] Specifically, by placing the first outer shell 2 and the second outer shell 3 inside the connecting shell 1, inserting the threaded rod 8 according to the mounting holes on the first outer shell 2 and the second outer shell 3, and then locking it with the fixing nut 9, the initial assembly of the first outer shell 2, the second outer shell 3 and the connecting shell 1 can be completed.

[0030] Furthermore, a fixing component 4 is provided on the first outer shell 2, which is used to fix the connecting shell 1 between the first outer shell 2 and the second outer shell 3.

[0031] Specifically, the fixing component 4 includes a fixing plate 401, which is slidably connected to the first housing 2. The first housing 2 has a threaded hole, and a fixing rod 402 is threadedly connected to the threaded hole.

[0032] Furthermore, a fixing knob 403 is fixedly connected to one end of the fixing rod 402, and the other end of the fixing rod 402 is rotatably connected to the fixing plate 401. A sealing ring is provided between the fixing plate 401 and the connecting shell 1, and a sealing ring is also provided between the connecting shell 1 and the second outer shell 3.

[0033] Specifically, by rotating the fixing knob 403, the fixing rod 402 is rotated, thereby moving the fixing rod 402 and pushing the fixing plate 401 to move. This causes the fixing plate 401 to fix the connecting shell 1 between the fixing plate 401 and the second outer shell 3. At the same time, the sealing rings between the fixing plate 401 and the connecting shell 1 and between the connecting shell 1 and the second outer shell 3 can seal the connecting shell 1 to prevent leakage of the chemical raw materials being transported.

[0034] Furthermore, two sets of partition rings 5 ​​are detachably connected inside the connecting shell 1. A through hole is provided in the middle of the two sets of partition rings 5, and a fixing bolt 10 is provided in the through hole. The fixing bolt 10 is used to fix the fire-arresting component 6.

[0035] Furthermore, flame-arresting components 6 are provided within the two sets of separating rings 5. The flame-arresting components 6 include a flame-arresting core 601. A clearance hole is provided in the middle of the flame-arresting core 601, and a fixing bolt 10 is provided through the clearance hole. The flame-arresting core 601 is located between the two sets of separating rings 5. A filter screen 602 is provided between the separating rings 5 ​​and the flame-arresting core 601. The filter screen 602 is detachably connected to the fixing bolt 10. The function of the separating rings 5 ​​is to divide the flame before it passes through the flame-arresting core 601, thereby splitting the flame into multiple streams and accelerating heat dissipation. The function of the filter screen 602 is to filter the chemical raw materials passing through the filter screen 602, preventing impurities from entering the flame-arresting core 601 and causing blockage of the flame-arresting core 601, which would prevent the burning material from being cooled down in time and thus stop burning.

[0036] Specifically, the flame arrestor core 601 is composed of multiple stacked flame arrestor filters. The filters have a large number of small channels and are generally made of stainless steel or copper mesh. Alternatively, they can be disc-shaped filters made of stainless steel corrugated tape and flat tape. The working principle of the flame arrestor core 601 is based on the principle of combustion. When a flame bursts and rushes towards the flame arrestor core 601, the flame is blocked and divided into countless small fireballs by the flame arrestor core 601. This increases the contact area between the small flames and the gas wall, enhances the heat transfer effect, and lowers the flame temperature below the ignition point, thereby preventing the flame from spreading. At the same time, if the filter channel size of the flame arrestor core 601 is very small, a large number of free radicals in the burning material will come into contact with the edge of the channel, reducing the free radical reaction and improving the gas-tight effect, thereby achieving the purpose of extinguishing the fire. This is a mature existing technology, which should be well understood by those skilled in the art, and will not be elaborated here.

[0037] Furthermore, the flame arrestor core 601, which is composed of multiple sets of flame arrestor filters, is fixed by the partition rings 5 ​​on both sides and the fixing bolts 10. At the same time, this device can determine the optimal flame arrestor layer thickness according to the actual use environment and the explosion level of the gas medium, thereby determining the number of flame arrestor filters, that is, the thickness of the flame arrestor core 601. This allows the flame arrester to prevent the flame propagation of the corresponding level of explosive gas mixture while minimizing flow resistance loss, so as to ensure the normal operation of the pipeline system.

[0038] Furthermore, the device can be adjusted according to the thickness of the flame arrestor core 601. By loosening the fixing nut 9, the position of the first outer shell 2 is adjusted so that the first outer shell 2 and the second outer shell 3 fix the flame arrestor core 601 and the partition ring 5 in the middle. Then, by tightening the fixing nut 9, the flame arrestor core 601 and the partition ring 5 are firmly fixed, and the seal is strengthened. Of course, sealing rings can be set between the partition ring 5 and the first outer shell 2 and the second outer shell 3 respectively to further seal the device. Then, by rotating the fixing knob 403 to drive the fixing rod 402 to move, the position of the fixing plate 401 is adjusted so that the connecting shell 1 is fixed between the first outer shell 2 and the second outer shell 3, so that the device is further sealed.

[0039] Furthermore, a flow limiting component 7 is provided inside the second housing 3. The flow limiting component 7 includes a flow limiting ring 701, which is fixedly connected to the inner wall of the second housing 3. A spring 702 is fixedly connected to the flow limiting ring 701, and a flow limiting ball 703 is fixedly connected to the spring 702.

[0040] Specifically, when chemical raw materials flow into the equipment through the flame arrester, the thrust of the chemical raw materials causes the flow-limiting ball 703 to pull the spring 702 to move, causing the flow-limiting ball 703 to disengage from the flow-limiting ring 701, thus allowing the raw materials to pass through the flame arrester. However, when the equipment malfunctions and the raw materials in the pipeline burn, the flow-limiting ball 703 is impacted and moves towards the flow-limiting ring 701, thereby blocking the flow-limiting ring 701 and preventing the flame from continuing to spread through the pipeline when the flame arrester core 601 fails to block it.

[0041] The working principle of this utility model is as follows:

[0042] This utility model is equipped with a flame arrestor component 6. The flame arrestor core 601, which is composed of multiple sets of flame arrestor filters, is fixed by the partition rings 5 ​​on both sides and the fixing bolts 10. At the same time, this device can determine the optimal flame arrestor layer thickness according to the actual use environment and the explosion level of the gas medium, thereby determining the number of flame arrestor filters, that is, the thickness of the flame arrestor core 601. This allows the flame arrester to prevent the flame propagation of the corresponding level of explosive gas mixture while minimizing flow resistance loss, so as to ensure the normal operation of the pipeline system.

[0043] This utility model is equipped with a fixing component 4. The device can be adjusted according to the thickness of the flame arrestor core 601. By loosening the fixing nut 9, the position of the first outer shell 2 is adjusted so that the first outer shell 2 and the second outer shell 3 fix the flame arrestor core 601 and the partition ring 5 in the middle. Then, by tightening the fixing nut 9, the flame arrestor core 601 and the partition ring 5 are firmly fixed, and the seal is strengthened. Of course, sealing rings can be set between the partition ring 5 and the first outer shell 2 and the second outer shell 3 respectively to further seal the device. Then, by rotating the fixing knob 403, the fixing rod 402 is moved to adjust the position of the fixing plate 401, so that the connecting shell 1 is fixed between the first outer shell 2 and the second outer shell 3, and the device is further sealed.

[0044] This utility model is equipped with a flow-limiting component 7. When chemical raw materials flow into the equipment through the flame arrester, the thrust of the chemical raw materials causes the flow-limiting ball 703 to pull the spring 702 to move, causing the flow-limiting ball 703 to disengage from the flow-limiting ring 701, thereby allowing the raw materials to pass through the flame arrester. However, when the device malfunctions and the raw materials in the pipeline burn, the flow-limiting ball 703 will be impacted and move towards the flow-limiting ring 701, thereby blocking the flow-limiting ring 701 and preventing the flame from continuing to spread through the pipeline when the flame arrester core 601 fails to block it.

[0045] 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 safety protection device for chemical production, comprising a connecting shell (1), characterized in that: The connecting shell (1) is movably connected to a first outer shell (2) on one side, and a second outer shell (3) is detachably connected to the other side of the connecting shell (1). The first outer shell (2) and the second outer shell (3) are detachably connected. A fixing component (4) is provided on the first outer shell (2). The fixing component (4) is used to fix the connecting shell (1) between the first outer shell (2) and the second outer shell (3). Two sets of partition rings (5) are detachably connected inside the connecting shell (1). A fire-resistant component (6) is provided inside the two sets of partition rings (5). A flow-limiting component (7) is provided inside the second outer shell (3).

2. The chemical production safety protection device according to claim 1, characterized in that: The connecting shell (1) has openings at both ends, and the first outer shell (2) and the second outer shell (3) are slidably connected to the two ends of the connecting shell (1), respectively. The first outer shell (2) and the second outer shell (3) have corresponding mounting holes.

3. The chemical production safety protection device according to claim 2, characterized in that: It also includes a threaded rod (8), which is provided through the mounting holes on the first housing (2) and the second housing (3), and both ends of the threaded rod (8) are threaded with fixing nuts (9).

4. The chemical production safety protection device according to claim 1, characterized in that: The fixing component (4) includes a fixing plate (401), which is slidably connected to the first housing (2). The first housing (2) has a threaded hole, and a fixing rod (402) is threadedly connected to the threaded hole.

5. The chemical production safety protection device according to claim 4, characterized in that: One end of the fixing rod (402) is fixedly connected to a fixing knob (403), and the other end of the fixing rod (402) is rotatably connected to the fixing plate (401). A sealing ring is provided between the fixing plate (401) and the connecting shell (1).

6. The chemical production safety protection device according to claim 1, characterized in that: The two sets of separating rings (5) have through holes in the middle, and fixing bolts (10) are provided in the through holes. The fixing bolts (10) are used to fix the fire-arresting components (6).

7. The chemical production safety protection device according to claim 6, characterized in that: The flame arresting assembly (6) includes a flame arresting core (601), with a clearance hole in the middle of the flame arresting core (601). The fixing bolt (10) passes through the clearance hole. The flame arresting core (601) is located between two sets of separating rings (5). A filter screen (602) is provided between the separating rings (5) and the flame arresting core (601). The filter screen (602) is detachably connected to the fixing bolt (10).

8. The chemical production safety protection device according to claim 1, characterized in that: The current limiting component (7) includes a current limiting ring (701), which is fixedly connected to the inner wall of the second housing (3). A spring (702) is fixedly connected to the current limiting ring (701), and a current limiting ball (703) is fixedly connected to the spring (702).

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