Flame arrester capable of realizing self-cleaning by utilizing gas turbulence phenomenon

Abstract

The utility model discloses a flame arrester capable of realizing self-cleaning by utilizing a gas turbulence phenomenon, and relates to the technical field of flame arresters. The flame arrester comprises a first half shell, a second half shell and a flame arresting assembly, the flame arresting assembly is located between the first half shell and the second half shell, and the first half shell and the second half shell are detachably connected. The fire-retardant assembly comprises a connecting rod, turbulent flow fan blades, core covers and a plurality of fire-retardant discs, the core covers are arranged on the two sides of the fire-retardant discs, and the connecting rod penetrates through the core covers and the fire-retardant discs. A bearing is arranged at one end of the connecting rod, the turbulent flow fan blades are connected with the bearing, and the turbulent flow fan blades rotate relative to the fire retardant disc under the action of airflow. According to the utility model, the turbulent flow fan blades are driven by airflow to rotate, and the turbulent flow generated by boundary layer separation is utilized to remove impurities in gaps of the flame arresting disc, so that the self-cleaning function is realized, and the flame arrester is ensured to have good ventilation performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire arrester technical field especially relates to a kind of fire arrester of self-cleaning using gas turbulence phenomenon. BACKGROUND

[0002] Fire arrester, also called fire prevention device, fire barrier, flame trap, etc., is composed of solid material containing many small channels or slits, which is a safety device that can prevent flame from passing through while allowing gas to flow through. Fire arrester is usually installed on storage tanks and pipelines for conveying or discharging flammable and explosive gases. It attempts to suppress the spread of flame in the early stage of flame development, or even if an explosion occurs, the explosion can be effectively suppressed by using fire arrester, which has been widely used in various storage tanks and pipelines for conveying flammable gases in the industries of petroleum, chemical industry, mining and transportation.

[0003] Chinese patent CN110314306A discloses a kind of fire arrester, including shell, the shell is equipped with two, the shell is equipped with fire arrester assembly between, the shell is equipped with shock wave absorption device between fire arrester assembly, the shell is equipped with buffer cavity inside, and detonation shock wave is reduced in buffer cavity Pressure reduction, protection fire arrester resistance piece. But in the technical scheme disclosed in this document, the fire arrester shell is the currently commonly used socket welding fire arrester shell. After long-term operation of the fire arrester, a large amount of impurities can be deposited in the gap of the fire arrester disc, thereby increasing the resistance of the fire arrester to gas flow and reducing the air permeability of the fire arrester. It needs to be disassembled and cleaned by staff, which is time-consuming and laborious. UTILITY MODEL CONTENT

[0004] In view of the above problems that the fire arrester is prone to deposit a large amount of impurities in the gap of the fire arrester disc after long-term operation, thereby reducing the air permeability of the fire arrester, the utility model provides a fire arrester that realizes self-cleaning using gas turbulence phenomenon.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A fire arrester that realizes self-cleaning using gas turbulence phenomenon includes a first half-shell, a second half-shell and a fire arrester assembly. The fire arrester assembly is located between the first half-shell and the second half-shell, and the first half-shell and the second half-shell are detachably connected. The fire arrester assembly includes a connecting rod, turbulence fan blades, a core cover and a plurality of fire arrester discs. The core cover is arranged on both sides of the plurality of fire arrester discs, and the connecting rod penetrates the core cover and the plurality of fire arrester discs. One end of the connecting rod is provided with a bearing, the turbulence fan blades are connected with the bearing, and the turbulence blades rotate relative to the fire arrester discs under the action of gas flow and generate turbulence.

[0007] Further, the fire blocking assembly further comprises a core shell, the core shell is tubular, and the openings on both sides are fixedly connected with the core cover to form a containing cavity, and the fire blocking discs are arranged in the containing cavity.

[0008] Further, a sleeve is arranged between the fire blocking disc and the connecting rod, the sleeve is sleeved on the connecting rod, and the fire blocking discs are sleeved on the sleeve.

[0009] Further, the core cover is provided with a plurality of air holes.

[0010] Further, the turbulence fan blade is located in the first half shell, the turbulence fan blade comprises a bearing sleeve and a plurality of blades, the bearing sleeve is sleeved on the bearing, and the plurality of blades are fixedly connected with the bearing sleeve through a fixing rod.

[0011] Further, the blade is plate-shaped, the cross section is approximately drop-shaped, comprises a large end and a small end, and the small end is located on the side adjacent to the fire blocking disc.

[0012] Further, the cross section of the blade is a symmetrical structure, and an included angle between the symmetrical axis of the cross section and the axis of the connecting rod is on the same plane.

[0013] Further, the bearing is a damping bearing.

[0014] Further, the connecting rod is provided with a boss on one side, and the end of the other side is provided with a thread.

[0015] Further, the bearing is in interference fit with the end of the connecting rod adjacent to the boss.

[0016] The beneficial effects of the utility model are: in the utility model, the turbulence fan blade rotates under the driving of airflow, and the turbulence airflow generated by boundary layer separation is used to remove impurities in the gap of the fire blocking disc, so that the self-cleaning function is realized, and the fire blocker has good ventilation performance. The utility model uses the gas turbulence phenomenon to realize self-cleaning of the fire blocking disc, and the staff does not need to frequently disassemble and clean, so that the maintenance operation of the staff is simplified, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 shows the structure principle schematic diagram of an embodiment of the utility model.

[0018] Figure 2 Fig. 2 shows the top view of the utility model. Figure 1

[0019] Figure 3 Fig. 4 shows the sectional view of A in the utility model. Figure 2

[0020] ​​Figure 4 As shown Figure 3 A side view.

[0021] Figure 5 The diagram shows the structure of a turbulent fan blade.

[0022] Figure 6 As shown Figure 5 The front view. Detailed Implementation

[0023] This utility model discloses a flame arrester that achieves self-cleaning by utilizing gas turbulence. The following describes one embodiment of this utility model in detail with reference to the accompanying drawings.

[0024] like Figure 1 As shown, a flame arrester that utilizes gas turbulence to achieve self-cleaning includes a first half-shell 1, a second half-shell 2, and a flame arresting assembly. Both the openings on the first half-shell 1 and the second half-shell 2 have flanges. (Combined with...) Figure 2 and Figure 3 As shown, the fire-arresting component is located between the first half-shell 1 and the second half-shell 2, and the first half-shell 1 and the second half-shell 2 are fixedly connected by bolts.

[0025] like Figure 4 As shown, the flame arrestor assembly includes a core shell 3, a core cover 4, a connecting rod 6, turbulent fan blades, and several flame arrestor discs 5. The core shell 3 is cylindrical, with openings on both sides fixedly connected to the matching core cover 4 to form a receiving cavity, within which the flame arrestor discs 5 are disposed. The core cover 4 has several vent holes for gas flow. The connecting rod 6 passes through the two core covers 4 and the flame arrestor discs 5, and a sleeve 7 is provided between the connecting rod 6 and the flame arrestor discs 5. The sleeve 7 is fitted onto the connecting rod 6, and the flame arrestor discs 5 are fitted onto the sleeve 7. A boss is provided on one side of the connecting rod 6, and a thread is provided at the end of the other side. A nut is threaded onto the connecting rod 6, and the boss and nut cooperate to fasten the core cover 4 and the flame arrestor discs 5.

[0026] The bearing 8 is interference-fitted with one end of the connecting rod 6 adjacent to the boss and contacts the boss. In this embodiment, the bearing 8 is a damping bearing used to limit the rotation speed and prevent excessive rotation speed. The turbulent fan blade is located inside the first half-shell 1. The turbulent fan blade includes a bearing sleeve 9 and several blades 10. The bearing sleeve 9 is sleeved on the bearing 8, and the several blades 10 are arranged outside the bearing sleeve 9 and fixedly connected to the bearing sleeve 9 by a fixing rod.

[0027] Combination Figure 5 and Figure 6As shown, each blade 10 is plate-shaped with an approximately teardrop-shaped cross-section. The cross-section of the blade 10 is symmetrical, and the axis of symmetry of the cross-section and the axis of the connecting rod 6 are at an angle to each other on the same plane. The blade 10 includes a large end and a small end, with the small end located on one side adjacent to the flame arrestor plate 5. The turbulent fan blades can rotate relative to the flame arrestor plate 5 under the action of airflow.

[0028] The first half-shell 1 is the inlet side, and the second half-shell 2 is the outlet side. After installation with the pipeline, the airflow from the pipeline first enters the first half-shell 1. The airflow drives the turbulent fan blades to rotate. The surface of the blades 10 has a certain roughness, which allows the airflow to contact the blades 10 and generate friction, causing the fluid boundary layer velocity to drop rapidly to zero, thereby generating boundary separation and forming turbulence. Due to the instability of the generated turbulent gas, after passing through several flame arrestor plates 5, it can remove impurities attached to the gaps in the flame arrestor plates 5, ensuring the ventilation performance of the flame arrester and thus achieving a self-cleaning function.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A flame arrester that achieves self-cleaning by utilizing gas turbulence, characterized in that: The device includes a first half-shell (1), a second half-shell (2), and a flame arrestor assembly. The flame arrestor assembly is located between the first half-shell (1) and the second half-shell (2), and the first half-shell (1) and the second half-shell (2) are detachably connected. The flame arrestor assembly includes a connecting rod (6), a turbulent fan blade, a core cover (4), and several flame arrestor discs (5). The core cover (4) is disposed on both sides of the several flame arrestor discs (5), and the connecting rod (6) passes through the core cover (4) and the several flame arrestor discs (5). One end of the connecting rod (6) is provided with a bearing (8), and the turbulent fan blade is connected to the bearing (8). The turbulent fan blade rotates relative to the flame arrestor discs (5) under the action of airflow and generates turbulence.

2. A flame arrester that utilizes gas turbulence to achieve self-cleaning according to claim 1, characterized in that: The flame arrestor assembly also includes a core shell (3), which is tubular, with openings on both sides fixedly connected to the matching core cover (4) to form a receiving cavity, and a plurality of flame arrestor discs (5) are arranged in the receiving cavity.

3. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 1, characterized in that: A sleeve (7) is provided between the flame arrestor plate (5) and the connecting rod (6). The sleeve (7) is sleeved on the connecting rod (6), and several flame arrestor plates (5) are sleeved on the sleeve (7).

4. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 1, characterized in that: The core cover (4) is provided with several ventilation holes.

5. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 1, characterized in that: The turbulent fan blade is located inside the first half-shell (1). The turbulent fan blade includes a bearing sleeve (9) and several blades (10). The bearing sleeve (9) is sleeved on the bearing (8), and the several blades (10) are fixedly connected to the bearing sleeve (9) by a fixing rod.

6. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 5, characterized in that: The blade (10) is plate-shaped with a cross-section that is approximately teardrop-shaped, including a large end and a small end, with the small end located on one side adjacent to the flame arrestor plate (5).

7. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 6, characterized in that: The blade (10) has a symmetrical cross-section, and the axis of symmetry of the cross-section and the axis of the connecting rod (6) are at an angle to each other on the same plane.

8. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 1, characterized in that: The bearing (8) is a damping bearing.

9. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 1, characterized in that: The connecting rod (6) has a boss on one side and a thread on the other end.

10. A flame arrester that achieves self-cleaning by utilizing gas turbulence as described in claim 9, characterized in that: The bearing (8) is interference-fitted with one end of the connecting rod (6) adjacent to the boss.

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