A flame arrestor with a new type of purge port

Abstract

The fire arrester with a new type of blowing port comprises a fire arrester shell, a fire arrester core arranged in the shell and a blowing port, the blowing port is connected with a blowing pipeline, the blowing pipeline is arranged in the fire arrester and one end of the blowing pipeline is communicated with the blowing port and the other end of the blowing pipeline is closed, a plurality of blowing holes are arranged on the blowing pipeline, and the plurality of blowing holes can cover the whole surface of the fire arrester core.

Description

Technical Field

[0001] This utility model relates to a flame arrester with a novel purge port, belonging to the field of flame arresters. Background Technology

[0002] Flame arresters are typically installed in combustible gas pipelines or storage systems. Their main function is to prevent flame propagation along the pipeline and to cool and extinguish the flame front. Most existing flame arresters achieve their flame-arresting function through a flame-arresting core. However, during long-term use, this core is susceptible to contamination from dust, oil, condensate, and other deposits in the medium, leading to blockages in the flow path, increased local pressure drop, and decreased flame-arresting performance. Therefore, in practical applications, the flame-arresting core usually needs to be periodically purged to restore its flow path and maintain its flame-arresting effect.

[0003] Most existing purging structures only have a single purging port in a localized area of ​​the flame arrester. Compressed air entering often only acts on a localized area of ​​the flame arrester core, easily leading to uneven purging coverage, obvious dead zones, and difficulty in removing localized residues. For example, the online safety cleaning device for flame arresters disclosed in CN217526171U uses an external air inlet and outlet pipe connected to the upstream and downstream of the flame arrester. It uses N2 reverse flow purging and a separator to achieve gas-liquid separation. However, its purging path relies on external pipelines and does not have a dedicated pipeline and orifice distribution structure inside the flame arrester, making it impossible to guarantee uniform and complete coverage of the flame arrester core surface. The purging effect depends on differential pressure monitoring, and localized blind spots still exist.

[0004] Therefore, it is urgent to improve the existing technology to solve the problems of limited purging range and insufficient purging uniformity of flame arresters. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a flame arrester with a novel purge port.

[0006] A flame arrester with a novel purge port includes a flame arrester housing, a flame arresting core disposed within the housing, and a purge port. The purge port is connected to a purge pipe, which is disposed inside the flame arrester with one end connected to the purge port and the other end closed. The purge pipe has multiple purge holes, the distribution of which can cover the entire surface of the flame arresting core.

[0007] Furthermore, the purging pipeline includes multiple pipelines arranged in a crisscrossing manner.

[0008] Furthermore, the multiple pipes are arranged in an X-shaped cross pattern.

[0009] Furthermore, the purge holes are evenly distributed on the purge pipe.

[0010] Furthermore, one end of the purging pipe extends into a purging port connected to a ball valve for controlling its on / off state.

[0011] Furthermore, the flame arrester also includes a compressed air introduction device connected to the purge port, the compressed air introduction device being used to supply compressed air to the purge pipe.

[0012] Furthermore, a sealing assembly is provided between the purge port and the purge pipe. The inner wall of the purge port is provided with an installation groove. The sealing assembly includes an installation ring fitted in the installation groove. The installation ring is sleeved on the purge pipe. A sealing ring is provided inside the installation ring and sleeved on the outside of the purge pipe. The sealing ring abuts against the outer wall of the purge pipe to form a sealed connection.

[0013] Furthermore, the sealing ring has protrusions extending from both sides, which are used to abut against the outer wall of the purging pipe to form a sealing connection.

[0014] Furthermore, a limiting groove is provided on the outer side of the sealing ring above the synapse, and a limiting ring is provided in the limiting groove.

[0015] Furthermore, one end of the limiting ring abuts against the inner wall of the mounting ring, and the outer wall of the sealing ring abuts against the inner wall of the mounting ring, so that the limiting ring and the sealing ring are limited and installed inside the mounting ring.

[0016] The beneficial effects of this invention are: it can reduce purging dead zones and improve the coverage of the purging airflow over the entire area of ​​the flame arrestor core, thereby helping to maintain the flow state and operational stability of the flame arrestor core. Combined with the closed structure at the end of the purging pipe, the airflow can be directionally distributed along the inside of the pipe and then simultaneously output through multiple purging holes, making the airflow path clearer and facilitating a stable purging process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of a flame arrester with a novel purge port according to this utility model.

[0019] Figure 2 This is a structural diagram of the purging pipeline.

[0020] Figure 3 This is a cross-sectional view of the connection between the purge port and the purge pipe.

[0021] Figure 4 for Figure 3 A magnified view of the details at point A in the middle.

[0022] In the diagram, 1 is the flame arrester housing; 11 is the flame arrester core; 12 is the purge port; 13 is the purge pipe; 131 is the purge hole; 132 is the first purge pipe; 133 is the second purge pipe; 14 is the ball valve; 16 is the mounting groove; 17 is the mounting ring; 18 is the sealing ring; 181 is the ramus; 19 is the limiting groove; and 20 is the limiting ring. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0024] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0025] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0026] Based on this, and to improve the problems in related technologies, embodiments of this application provide a flame arrester with a novel purge port, such as... Figures 1 to 4 As shown: The flame arrester includes a housing 1, a flame-arresting core 11 disposed within the housing 1, and a purge port 12. The housing 1 forms the installation and protection space. The flame-arresting core 11 is disposed inside the housing and constitutes the main functional component for flame arrest. The purge port 12 is used to introduce compressed air during maintenance. The purge port 12 is connected to a purge pipe 13, which is disposed inside the flame arrester, with one end connected to the purge port 12 and the other end closed. The purge pipe 13 has multiple purge holes 131, the distribution of which can cover the entire surface of the flame-arresting core 11.

[0027] The arrangement of the purge pipe 13 is not limited to a single straight pipe structure. In a preferred embodiment, the purge pipe 13 can be extended and divided into a first purge pipe 132 and a second purge pipe 133, which are arranged to intersect each other. In a more preferred embodiment, the first purge pipe 132 and the second purge pipe 133 are arranged in an X-shape, so that compressed air can act on the flame arrestor core 11 from two directions simultaneously. The purge holes 131 are preferably evenly distributed on the purge pipe 13 so that the gas entering the pipe can be released relatively evenly along multiple outlet points, reducing the problem of excessively strong or weak local airflow.

[0028] This embodiment enables the purging gas to form a relatively uniform distribution across the entire surface of the flame arrestor core 11, suitable for simultaneous cleaning of the pores, edges, and central areas of the flame arrestor core 11. It improves the operability of purging and maintenance without altering the main operating mode of the flame arrestor. Compared to structures with purging inlets only in certain areas, this solution facilitates the removal of deposits on the surface and internal channels of the flame arrestor core 11, and is also more conducive to maintaining the flow state of the flame arrestor core 11. As an alternative embodiment, those skilled in the art can also configure multiple pipes into a cross shape, a grid shape, or other intersecting structures that can achieve multi-directional coverage, depending on the cross-sectional shape of the flame arrestor core 11, as long as it can satisfy the purging coverage of the entire surface of the flame arrestor core 11.

[0029] Furthermore, in some embodiments, one end of the purge pipe 13 extends into a purge port 12 connected to a ball valve 14 for controlling its on / off state. The ball valve 14 can be configured as a manually operated valve or as a valve body structure that facilitates external control, used to open when purging is required and close when purging is not required, thereby controlling the entry of compressed air.

[0030] This implementation can separate the purging operation from the normal operation state, so that compressed air enters the purging pipe 13 only during maintenance or cleaning, reducing unnecessary gas loss and reducing the risk of airflow accidentally entering the flame arrester when not in operation.

[0031] Furthermore, in some embodiments, the flame arrester also includes a compressed air introduction device connected to the purge port 12, which is used to supply compressed air to the purge pipe 13. The compressed air introduction device may include an external compressed air interface, an air guide pipe, and necessary connectors, and its function is to stably introduce an external air source into the purge port 12, and then distribute it to each purge hole 131 through the purge pipe 13.

[0032] Furthermore, in some embodiments, a sealing assembly is provided between the purge port 12 and the purge pipe 13. The inner wall of the purge port 12 is provided with an installation groove 16. The sealing assembly includes an installation ring 17 fitted in the installation groove 16. The installation ring 17 is sleeved on the purge pipe 13. A sealing ring 18 is provided inside the installation ring 17 and sleeved on the outside of the purge pipe 13. The sealing ring 18 abuts against the outer wall of the purge pipe 13 to form a sealed connection.

[0033] In this structure, the mounting groove 16 is used for basic positioning of the sealing assembly, the mounting ring 17 is used to constrain the sealing ring 18 at a predetermined position in the purge port 12, and the sealing ring 18 directly forms a sealing contact with the outer wall of the purge pipe 13, thereby reducing the possibility of purge gas leaking from the vicinity of the purge port 12.

[0034] Furthermore, in some embodiments, the sealing ring 18 extends with protrusions 181 on both sides, the protrusions 181 being used to abut against the outer wall of the purge pipe 13 to form a sealing connection. The protrusions 181 form a partial compression fit with the outer wall of the purge pipe 13 in the press-fit state to enhance the fit between the sealing ring 18 and the outer wall of the pipe.

[0035] This implementation method allows the sealing interface to no longer rely entirely on a single planar contact, but instead forms a more defined clamping point through the synthesis of the synthesis point 181. For minor eccentricities, small surface fluctuations, or wear after repeated assembly and disassembly, the synthesis point 181 can maintain a certain compensatory effect, reducing localized air leakage.

[0036] Furthermore, in some embodiments, a limiting groove 19 is provided on the outer side of the sealing ring 18 above the protrusion 181, and a limiting ring 20 is provided in the limiting groove 19. The limiting ring 20 is provided to axially limit and maintain the position of the sealing ring 18, so that the sealing ring 18 maintains a predetermined posture inside the mounting ring 17 and is not easily displaced under the impact of airflow.

[0037] This implementation improves the assembly reliability of the sealing assembly and reduces the risk of the sealing ring 18 shifting, flipping, or falling off during long-term use. After the limiting ring 20 enters the limiting groove 19, it provides auxiliary locking for the sealing ring 18, making the sealing structure more stable during disassembly, assembly, and operation. For flame arresters requiring frequent maintenance, this structure helps maintain consistent sealing performance and reduces gas leakage problems caused by changes in the position of the sealing element.

[0038] Furthermore, in some embodiments, one end of the limiting ring 20 abuts against the inner wall of the mounting ring 17, and the outer wall of the sealing ring 18 abuts against the inner wall of the mounting ring 17, so that the limiting ring 20 and the sealing ring 18 are limited and installed inside the mounting ring 17.

[0039] This embodiment creates a clearly defined nested fit between the limiting ring 20, the sealing ring 18, and the mounting ring 17. This not only restricts the range of motion of the sealing ring 18 but also ensures that the sealing ring 18 remains in close contact with the outer wall of the purge pipe 13 under pressure. The mounting ring 17 serves both positioning and support functions, the limiting ring 20 serves a limiting function, and the sealing ring 18 serves a primary sealing function. The clear division of labor among the three facilitates assembly and replacement. As a specific and operable implementation scheme, during assembly, the sealing ring 18 can be first embedded into the mounting ring 17, then the limiting ring 20 can be pressed into the limiting groove 19, and finally the purge pipe 13 can be passed through the mounting ring 17 to complete the positioning, thus forming a reusable and reassembleable sealing structure.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0041] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A flame arrestor with a novel purge port, characterized by: The flame arrester includes a housing, a flame arresting core disposed within the housing, and a purge port. The purge port is connected to a purge pipe, which is disposed inside the flame arrester with one end connected to the purge port and the other end closed. The purge pipe has multiple purge holes, the distribution of which can cover the entire surface of the flame arresting core.

2. The flame arrester with a novel purge port according to claim 1, characterized in that: The purging pipeline includes multiple pipelines, which are arranged in a crisscrossing manner.

3. The flame arrester with a novel purge port according to claim 2, characterized in that: The multiple pipes are arranged in an X-shaped cross pattern.

4. The flame arrester with a novel purge port according to claim 1, characterized in that: The purging holes are evenly distributed on the purging pipe.

5. The flame arrester with a novel purge port according to claim 1 or 2, characterized in that: One end of the purging pipe extends into a purging port connected to a ball valve that controls its on / off state.

6. The flame arrester with a novel purge port according to claim 1, characterized in that: The flame arrester also includes a compressed air introduction device connected to the purge port, the compressed air introduction device being used to supply compressed air to the purge pipe.

7. The flame arrester with a novel purge port according to claim 1, characterized in that: A sealing assembly is provided before the purge port and the purge pipe. The inner wall of the purge port is provided with an installation groove. The sealing assembly includes an installation ring fitted in the installation groove. The installation ring is sleeved on the purge pipe. A sealing ring is provided inside the installation ring and sleeved on the outside of the purge pipe. The sealing ring abuts against the outer wall of the purge pipe to form a sealed connection.

8. The flame arrester with a novel purge port according to claim 7, characterized in that: The sealing ring has protrusions extending from both sides, which are used to abut against the outer wall of the cleaning pipe to form a sealing connection.

9. The flame arrester with a novel purge port according to claim 8, characterized in that: The outer side of the sealing ring is provided with a limiting groove located above the synapse, and a limiting ring is provided in the limiting groove.

10. The flame arrester with a novel purge port according to claim 9, characterized in that: One end of the limiting ring abuts against the inner wall of the mounting ring, and the outer wall of the sealing ring abuts against the inner wall of the mounting ring, so that the limiting ring and the sealing ring are limited and installed inside the mounting ring.

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