Novel removable fire ventilation device

Abstract

The utility model discloses a new detachable fire -proof ventilation device, including the lower conical head, upper conical head through detachable flange subassembly connection, the bottom end welding of lower conical head air inlet butt joint pipe, the top end welding of upper conical head fixed port connector, the inner wall top of lower conical head welds fire -resistant core support subassembly, and the fire -resistant core support subassembly is placed fire -resistant core subassembly and is fixed through the fire -resistant core fixed component of top, and the fire -resistant core fixed component is installed in the inner wall bottom of upper conical head, the lower conical head is welded with upper portion hydrops evacuation pipe, bottom hydrops evacuation pipe. The utility model pays more attention to its functionality and durability, and the air pressure effect in balance pipe and cabin is better, and the utility model is convenient to dismount and install, can change whether to adopt the fire -proof attribute according to the medium attribute, and the simple manufacture is stable in performance.

Description

Technical Field

[0001] This utility model relates to the technical field of fireproof and breathable pressure-balancing equipment in industries such as chemical engineering, tunnels, coal mines, and marine engineering, and in particular to a novel detachable fireproof and breathable device. Background Technology

[0002] Fireproof venting devices are used in industries such as chemical engineering, tunnels, coal mines, and marine engineering for fire prevention, ventilation, and pressure balancing. They are used in many process pipelines and equipment. On the top of storage tanks in the petroleum and chemical industry, fireproof venting heads are used to prevent external flames from entering the tank while allowing the gas inside the tank to be released slowly, ensuring the safe operation of the tank. Their role is particularly important in storage tanks storing flammable and explosive liquids.

[0003] For small oil tanks, boilers, pumps, and other equipment, fireproof ventilation devices can ensure the safe operation of the equipment and prevent fire accidents.

[0004] Fireproof venting devices are often installed on various oil and gas facilities during oil and gas processing, transportation, and storage to prevent safety hazards caused by pressure accumulation or temperature changes.

[0005] Previous fireproof ventilation devices have all had the following problems to varying degrees:

[0006] 1. Traditional fireproof ventilation devices rarely solve the problem of rainwater backflow during use. Because they cannot be discharged in time, the ventilation becomes obstructed, which affects the exhaust efficiency and causes a significant pressure difference in the medium.

[0007] 2. Typical fireproof netting is composed of wire mesh with a mesh size of 30 or more, or two layers of wire mesh with a mesh size of 25 or more. As the service life increases and foreign objects accumulate, the mesh size will increase and lose its fire-resistant ability.

[0008] 3. Due to the failure or damage of the fireproof netting, it is necessary to replace the fireproof netting frequently;

[0009] 4. After replacing the fireproof mesh, the overall sealing performance of the device cannot be guaranteed;

[0010] 5. Significant vibration;

[0011] 6. Traditional fireproof ventilation devices are installed at the end of the pressure balancing pipeline of the storage tank. Excessive liquid accumulation and backflow affect the ventilation area, the fireproof function of combustible gases, and the release of excess gas and maintenance of pressure balance. Utility Model Content

[0012] To solve the above problems, this utility model provides a novel detachable fireproof and breathable device.

[0013] To solve the above-mentioned technical problems, the technical solution of this utility model is: a novel detachable fireproof and ventilated device, including a lower conical head and an upper conical head connected by a detachable flange assembly; an air inlet connecting pipe is welded to the bottom end of the lower conical head, and a fixed port connecting pipe is welded to the top end of the upper conical head; a flame-arresting core support assembly is welded to the top of the inner wall of the lower conical head, a flame-arresting core assembly is placed on the flame-arresting core support assembly and fixed by a flame-arresting core fixing assembly at the top, and the flame-arresting core fixing assembly is installed at the bottom of the inner wall of the upper conical head; the lower conical head is welded to the upper liquid drainage pipe and the bottom liquid drainage pipe.

[0014] The flame arrestor core support assembly includes an outer ring fixing plate and an inner ring fixing plate connected by connecting stiffeners. An 8-mesh filter screen is welded between the outer ring fixing plate and the inner ring fixing plate and is divided into several pieces by connecting stiffeners. Supporting ribs are welded to the bottom of the connecting stiffeners. The outer side of the supporting ribs is welded to the inner wall of the lower conical head, and the inner side of the supporting ribs is welded to the outer wall of the inverted conical distribution plate.

[0015] Furthermore, the detachable flange assembly includes two plate flanges welded to the lower conical head and the upper conical head respectively, with a corrugated metal gasket between the two plate flanges, and fastened by studs and nuts.

[0016] Furthermore, the flame arrestor core assembly includes a wound flame arrestor core, wherein the inner and outer rings of the wound flame arrestor core are respectively provided with an inner reinforcing ring and an outer reinforcing ring.

[0017] Furthermore, the flame arrestor core fixing assembly includes several pressure plates, which are welded to the bottom of the inner wall of the upper conical head, and fixing ribs are installed at the bottom of the pressure plates by bolts and nuts.

[0018] Furthermore, the diameter of the outlet at the tip of the cone angle of the upper conical head is smaller than the inner circle size of the wound flame arrestor core.

[0019] Furthermore, the inner end of the upper liquid drainage pipe is located at the bottom of the inverted cone distribution plate, and the outer end extends out of the outer wall of the lower conical head.

[0020] Furthermore, the outer end of the bottom liquid drain pipe extends beyond the outer wall of the lower conical head.

[0021] The beneficial effects of this utility model are:

[0022] 1. The fixed port pipe is longer, which solves the problem of rainwater being swept directly onto the ventilator, allowing rainwater to be discharged from the ventilator more smoothly, ensuring the flow area for gas discharge, and better balancing the pressure.

[0023] 2. After the gas enters the ventilation device, the space becomes larger and the flow rate slows down, making the ventilation device itself more stable and reducing vibration caused by excessive flow rate.

[0024] 3. The fire-arresting core assembly can be lifted to the ground by a crane for inspection and maintenance, which solves the problems of limited construction space and long equipment downtime.

[0025] 4. The venting device has a detachable flange structure, which is convenient for maintenance and installation. The fireproof structure can be selected according to different media. It can be converted between fireproof and non-fireproof structures. After reinstallation, the sealing performance can be well solved.

[0026] 5. The spiral-wound fire-retardant core, with its inner and outer reinforcing rings, solves the problem of frequent deformation and damage to fireproof mesh;

[0027] 6. The wound flame arrestor core can be frequently rinsed and cleaned, requiring only periodic inspection;

[0028] 7. Because the vertical surface of the wound flame arrestor core has no holes and is opaque, impurities are not easily allowed to enter the process pipeline. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the flame arrestor core support assembly structure;

[0032] Figure 4 yes Figure 3 AA section view;

[0033] Figure 5 This is a schematic diagram of the flame arrestor core assembly structure;

[0034] Figure 6 This is the main view of the flame arrestor core fixing assembly;

[0035] Figure 7 This is a top view of the flame arrestor core fixing assembly;

[0036] Figure 8 This is a schematic diagram of the detachable flange assembly.

[0037] The components are as follows: 1. Inlet connecting pipe; 2. Lower conical head; 3. Upper liquid drain pipe; 4. Flame arrestor core support assembly; 4-1. Outer ring fixing plate; 4-2. Inner ring fixing plate; 4-3. Connecting rib; 4-4. Support rib; 4-5. 8-mesh filter screen; 4-6. Inverted conical distribution plate; 5. Flame arrestor core assembly; 5-1. Outer reinforcing ring; 5-2. Spiral wound flame arrestor core; 5-3. Inner reinforcing ring; 6. Flame arrestor core fixing assembly; 6-1. Pressure plate; 6-2. Fixing rib; 6-3. Bolt; 6-4. Nut 1; 7. Detachable flange assembly; 7-1. Plate flange; 7-2. Corrugated metal gasket; 7-3. Stud; 7-4. Nut 2; 8. Upper conical head; 9. Fixed port connecting pipe; 10. Bottom liquid drain pipe. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-8 The specific embodiments of this utility model will be further described below.

[0039] The novel detachable fireproof and ventilated device includes a lower conical head 2 and an upper conical head 8 connected by a detachable flange assembly 7. An air inlet connecting pipe 1 is welded to the bottom end of the lower conical head 2, and a fixed port connecting pipe 9 is welded to the top end of the upper conical head 8. A flame-arresting core support assembly 4 is welded to the top of the inner wall of the lower conical head 2. A flame-arresting core assembly 5 is placed on the flame-arresting core support assembly 4 and fixed by a top flame-arresting core fixing assembly 6. The flame-arresting core fixing assembly 6 is installed at the bottom of the inner wall of the upper conical head 8. The lower conical head 2 is welded to an upper liquid drainage pipe 3 and a bottom liquid drainage pipe 10. The outer end of the bottom liquid drainage pipe 10 extends out of the outer wall of the lower conical head 2.

[0040] The flame arrester core support assembly 4 includes an outer ring fixing plate 4-1 and an inner ring fixing plate 4-2 connected by connecting stiffeners 4-3. An 8-mesh filter screen 4-5 is welded between the outer ring fixing plate 4-1 and the inner ring fixing plate 4-2, and is divided into several pieces by the connecting stiffeners 4-3. Supporting ribs 4-4 are welded to the bottom of each connecting stiffener 4-3. The outer side of the supporting ribs 4-4 is welded to the inner wall of the lower conical head 2, and the inner side of the supporting ribs 4-4 is welded to the outer wall of the inverted conical distribution plate 4-6. The inner end of the upper liquid drainage pipe 3 is located at the bottom of the inverted conical distribution plate 4-6, and the outer end extends out of the outer wall of the lower conical head 2.

[0041] The detachable flange assembly 7 includes two plate flanges 7-1 welded to the lower conical head 2 and the upper conical head 8 respectively. A corrugated metal gasket 7-2 is provided between the two plate flanges 7-1 and they are fastened with studs 7-3 and nuts 7-4. The detachable flange assembly 7 uses the corrugated metal gasket 7-2 for sealing. The corrugated metal gasket 7-2 is less hard than the plate flange 7-1, and its surface should be machined into a corrugated pattern, which can both seal and resist fire, and does not require frequent replacement.

[0042] The flame arrestor core assembly 5 includes a wound flame arrestor core 5-2, with an inner reinforcing ring 5-3 and an outer reinforcing ring 5-1 on its inner and outer rings, respectively. The outlet diameter at the cone tip of the upper conical head 8 is smaller than the inner circle size of the wound flame arrestor core 5-2. The flame arrestor core assembly 5 is constructed by winding corrugated metal wire layer by layer along the central cylinder from the inside out, with each subsequent layer staggered along the gap of the previous layer, allowing gas to pass through in an S-shape, increasing the stroke, and ensuring that no light passes through the vertical surface of the wound flame arrestor core 5-2. The inner and outer rings are fixed by reinforcing rings to prevent loosening and deformation.

[0043] The flame arrester core fixing assembly 6 includes several pressure plates 6-1, which are welded to the bottom of the inner wall of the upper conical head 8. The fixing rib plate 6-2 is installed at the bottom of the pressure plate 6-1 by bolts 6-3 and nuts 6-4.

[0044] The lower conical head 2 has a larger cone angle, causing a sudden decrease in the spatial density of the medium and reducing the flow velocity. The outlet diameter at the tip of the upper conical head 8 is smaller than the inner circle of the wound flame arrestor core 5-2, allowing the vertically falling liquid to directly enter the interior of the inverted conical distribution plate 4-6 and then be directly discharged. The airflow distribution of the inverted conical distribution plate 4-6 adopts a funnel-shaped air passage design with a smooth transition and gradually increasing flow area. The flame arrestor core assembly 5 can be hoisted and disassembled as a whole. The flame arrestor core assembly 5 provides ventilation to prevent flame retardation, and the liquid condenses and falls. The flame arrestor core assembly 5 can be disassembled, cleaned, and replaced individually. The upper liquid drain pipe 3 and the bottom liquid drain pipe 10 automatically discharge the accumulated liquid.

[0045] Working principle: The NG gas process pipeline is connected to the inlet connector 1, and the fixed port connector 9 directly vents or connects to the equipment at the end of the pipeline. The high-velocity gas flowing out of the process pipeline enters the inlet connector 1. Due to the expansion design of the lower conical end cap 2, the gas velocity can be reduced. Under the effect of the smooth transition of the inverted conical distribution plate 4-6 and the approximate funnel-shaped gas passage design, the gas is evenly distributed around the perimeter and enters the flame arrestor core assembly 5, further reducing the gas velocity. It then flows smoothly through the outlet fixed port connector 9 and out of the venting device, avoiding the vibration caused by unstable high-velocity airflow.

[0046] Rainwater enters through the fixed port connector 9 and falls vertically into the inverted cone distribution plate 4-6, then is discharged through the upper liquid drainage pipe 3. To prevent water from entering and clogging the process pipeline, rainwater enters at a certain angle and flows downward along the wall of the fixed port connector 9, passing through the inner wall of the lower conical head 2 and the flame arrestor core assembly 5 before reaching the bottom of the upper conical head 8, and is discharged through the bottom liquid drainage pipe 10 to the ventilator.

[0047] When disassembling and repairing the fireproof ventilation device, the detachable flange assembly 7 can be opened, and the fire-arresting core assembly 5 can be directly hoisted to the ground for repair and cleaning using a crane.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new removable fireproof venting device, characterized in that, The assembly includes a lower conical head (2) and an upper conical head (8) connected by a detachable flange assembly (7). An air inlet pipe (1) is welded to the bottom of the lower conical head (2), and a fixed port pipe (9) is welded to the top of the upper conical head (8). A flame arrester core support assembly (4) is welded to the top of the inner wall of the lower conical head (2). A flame arrester core assembly (5) is placed on the flame arrester core support assembly (4) and fixed by a flame arrester core fixing assembly (6) at the top. The flame arrester core fixing assembly (6) is installed at the bottom of the inner wall of the upper conical head (8). The lower conical head (2) is welded to the upper liquid drain pipe (3) and the bottom liquid drain pipe (10). The flame arrester core support assembly (4) includes an outer ring fixing plate (4-1) and an inner ring fixing plate (4-2) connected by connecting stiffeners (4-3). An 8-mesh filter screen (4-5) is welded between the outer ring fixing plate (4-1) and the inner ring fixing plate (4-2) and is divided into several pieces by connecting stiffeners (4-3). Supporting stiffeners (4-4) are welded to the bottom of each connecting stiffener (4-3). The outer side of the supporting stiffeners (4-4) is welded to the inner wall of the lower conical head (2), and the inner side of the supporting stiffeners (4-4) is welded to the outer wall of the inverted conical distribution plate (4-6).

2. The new removable fire damming venting device of claim 1, wherein, The detachable flange assembly (7) includes two plate flanges (7-1) welded to the lower conical head (2) and the upper conical head (8) respectively. A corrugated metal gasket (7-2) is provided between the two plate flanges (7-1) and they are fastened by studs (7-3) and nuts (7-4).

3. The new removable fire damming venting device of claim 1, wherein, The flame arrestor core assembly (5) includes a wound flame arrestor core (5-2), and the inner and outer rings of the wound flame arrestor core (5-2) are respectively provided with an inner reinforcing ring (5-3) and an outer reinforcing ring (5-1).

4. The improved removable fire damming venting device of claim 1, wherein, The fire-retardant core fixing assembly (6) includes several pressure plates (6-1). The pressure plates (6-1) are welded to the bottom of the inner wall of the upper conical head (8). The fixing ribs (6-2) are installed at the bottom of the pressure plates (6-1) by bolts (6-3) and nuts (6-4).

5. The improved removable fire damming venting device of claim 3, wherein, The diameter of the outlet at the top of the cone of the upper conical head (8) is smaller than the inner circle of the wound flame arrestor core (5-2).

6. The improved removable fire damming venting device of claim 1, wherein, The inner end of the upper liquid drainage pipe (3) is located at the bottom of the inverted cone distribution plate (4-6), and the outer end extends out of the outer wall of the lower conical head (2).

7. The improved removable fire dam barrier breather device of claim 1, wherein, The outer end of the bottom liquid drain pipe (10) extends out of the outer wall of the lower conical head (2).

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