Shock wave turning device of flame arrester
By designing a shock wave direction change device in the flame arrester, using spiral blades to slow down and change the direction of the flame shock wave, combined with the flame arresting core of multiple sets of filter plates, the problem of fire spreading through the pores of the flame arresting core is solved, and the effect of effectively preventing the flame from spreading is achieved.
Patent Information
- Application Number
- CN202421343446.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In existing fire arresters, flame shock waves can easily pass through the pores of the flame arresting core directly, causing the fire to spread at the other end of the pipeline, posing safety hazards.
A fire retardant shock wave changer device is designed, including a housing, a spiral blade and a fire retardant core assembly. The shell reduces the flame shock wave and changes direction through the spiral blades, so that the shock wave hits the side walls of the pores to prevent free radical molecules from passing through; the flame arresting core is composed of multiple sets of filter plates, arranged from large to small according to the aperture, increasing the contact area between the flame and the channel wall, enhancing heat transfer, and reducing flame temperature.
Effectively slow down the speed of flame shock wave, prevent the flame from spreading, reduce the flame temperature to below the ignition point, and further prevent the flame from spreading.
Smart Images
Figure CN222752461U_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of flame arresters, and in particular relates to a flame arrester shock wave redirecting device. Background Art
[0002] Flame arresters are safety devices used to prevent the spread of flames of flammable gases and flammable liquid vapors. They are generally installed in pipelines that transport flammable gases or on ventilated tanks to prevent the spread of flames. However, the pores of existing flame arrester cores are parallel to the installation direction of the flame arrester. Under deflagration or detonation conditions, the flame shock wave impacts in a high-speed straight line and can easily pass directly through the pores of the flame arrester core, thus posing a safety hazard. Summary of the invention
[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a flame arrester shock wave redirecting device, which solves the problem in the prior art that when a fire occurs, the flame shock wave directly passes through the pores of the fire arrester core, causing the fire to spread to the other end of the pipeline, and can expand the contact area between the small flame and the channel wall, enhance heat transfer, and reduce the flame temperature to below the ignition point, thereby further preventing the flame from spreading.
[0004] The purpose of this disclosure can be achieved through the following technical solutions:
[0005] It can slow down the impact speed of the flame shock wave, prevent the flame shock wave from directly impacting the fire-blocking core in a straight line, and prevent free radical molecules from passing through the pores, thereby avoiding the fire from spreading to the other end of the pipeline. It can also expand the contact area between the small flame and the channel wall, enhance heat transfer, and reduce the flame temperature below the ignition point, thereby further preventing the flame from spreading.
[0006] The principle and effect of the above technical solution are as follows:
[0007] A flame arrester shock wave redirection device comprises: a shell, the shell is used to buffer the high-speed straight-line impact of flame shock waves, the shell comprises a left shell and a right shell, and the left shell and the right shell are respectively arranged on the left and right sides of a main body plate, a plurality of groups of spiral blades are distributed on the inner circumference of the left shell and the right shell, a flame arrester core assembly is clamped at the inner center of the main body plate, and the flame arrester core is composed of a plurality of groups of filter plates, and the plurality of groups of filter plates are arranged transversely in the order of aperture from small to large, and a fixing ring penetrating the filter plate is opened in the inner center of the plurality of groups of filter plates.
[0008] In some disclosures, two groups of flange rings are disposed around the outer sides of the left shell and the right shell, and a plurality of groups of fixing bolts are disposed through the inner sides of the two groups of flange rings.
[0009] In some disclosures, the main body plate, the left shell and the right shell form a disassembly structure through several groups of fixing bolts.
[0010] In some disclosures, two groups of grooves are machined on the inner wall of the main body plate, and fixing plates are inserted into the outer sides of the two groups of grooves.
[0011] In some disclosures, a connecting rod is disposed through the inner side of the through hole, and the diameter of the connecting rod is equal to the diameter of the fixing ring.
[0012] In some disclosures, two sets of fixing blocks are threadedly connected to the outer wall of the connecting rod, and corresponding flat keys are fixed at the connection points between the connecting rod and the filter plate and the fixing plate.
[0013] In some disclosures, several groups of filter plates are coaxially arranged, and the outer walls of the filter plates are in contact with the inner walls of the main body plate.
[0014] In some disclosures, the groups of spiral blades are welded to the left shell and the right shell to form an integrated structure.
[0015] In some disclosures, the gaps between several groups of filter plates are in a horizontal straight line state.
[0016] In some disclosures, several groups of filter panels are symmetrically arranged about a vertical center line of the body panel.
[0017] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:
[0018] A fixed connection is one where the parts or components are fixed without any relative movement;
[0019] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.
[0020] Beneficial effects of the present disclosure:
[0021] By welding spiral blades on the inner sides of the left shell and the right shell, the flame shock wave can be decelerated, and the shock wave will not pass through the pores of the fire-blocking core in a straight line but will hit the side walls of the pores, thereby preventing the free radical molecules generated by the explosion from passing through the gaps and continuing to react. Moreover, since the fire-blocking core is composed of multiple groups of filter plates with different gaps, the free radicals can be separated again when passing through the filter plates, thereby expanding the contact area between the fine flame and the channel wall, enhancing heat transfer, and reducing the flame temperature below the ignition point, thereby achieving the effect of preventing the spread of flames. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present disclosure;
[0024] Figure 2 is a schematic diagram of an exploded structure of an embodiment of the present disclosure;
[0025] Figure 3 is a front view schematic diagram of an embodiment of the present disclosure;
[0026] Figure 4 is a schematic cross-sectional view taken along line AA in the front view of an embodiment of the present disclosure;
[0027] Figure 5 is a side view of an embodiment of the present disclosure; DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.
[0029] According to the concept of this application, Figures 1 to 5 To describe an embodiment of a flame arrester shock wave redirection device. Specifically, the shock wave redirection device is constructed as a split structure, which has three components: a shell 2, a spiral blade 23 and a flame arrester core assembly 4. The spiral blade 23 can buffer and decelerate the shock wave before it enters. At the same time, due to its own curvature, it can change the angle at which the flame shock wave enters the pore, so that the shock wave does not pass through the flame arrester core pore in a straight line but hits the side wall of the pore, thereby preventing the free radical molecules generated by the explosion from passing through the gap and continuing to react. Through multiple groups of filter plates 41 with gradual pores, the contact area between the fine flame and the channel wall can be expanded, heat transfer is enhanced, and the flame temperature is reduced below the ignition point, thereby achieving the effect of preventing the spread of flames.
[0030] Please refer to Figures 1 to 5, a flame arrester shock wave redirection device, comprising: a shell 2, the shell 2 is used to buffer the high-speed straight impact of flame shock waves, the shell 2 comprises a left shell 21 and a right shell 22, and the left shell 21 and the right shell 22 are respectively arranged on the left and right sides of a main body plate 1, and a plurality of groups of spiral leaves 23 are distributed on the inner circumference of the left shell 21 and the right shell 22, and a flame arrester core assembly 4 is clamped at the inner center of the main body plate 1, and the flame arrester core 4 is composed of a plurality of groups of filter plates 41, and the plurality of groups of filter plates 41 are arranged transversely in the order of aperture from small to large, and a fixing ring 42 penetrating the filter plate 41 is opened in the inner center of the plurality of groups of filter plates 41;
[0031] The spiral blades 23 are distributed in a circular pattern on the inner sides of the left shell 21 and the right shell 22, and can evenly divide the flame shock wave before entering. When the shock wave contacts the spiral blades 23, it can buffer and slow down the shock wave, thereby further protecting the fire-blocking core assembly 4 and improving the service life of the device. Moreover, since the spiral blades 23 are arc-shaped plates, the direction of the shock wave can be guided and changed when the shock wave passes through, so that the shock wave does not pass through the fire-blocking core pores in a straight line but hits the side walls of the pores, thereby preventing the free radical molecules generated by the explosion from passing through the gaps and continuing to react.
[0032] The fire-blocking core 4 is composed of a plurality of groups of filter plates 41, and the plurality of groups of filter plates 41 are arranged horizontally in the order of pore size from small to large. By increasing the area of the inner surface of the device, the reaction rate of the free radical molecules with the pore side walls is increased, so that the free radicals can be separated again when passing through the filter plates 41, thereby expanding the contact area between the fine flame and the channel wall, enhancing heat transfer, and reducing the flame temperature below the ignition point, thereby achieving the effect of preventing the flame from spreading. It can be fixed at both ends of the pipeline through the shell 2, and fixed by installing connectors on the outside of the pipeline, so as to facilitate installation.
[0033] Two groups of flange rings 31 are arranged around the outer sides of the left shell body 21 and the right shell body 22, and a plurality of fixing bolts 32 are arranged through the inner sides of the two groups of flange rings 31. The fixing bolts 32 are passed through the flange rings 31 and tightened to fix the shell body 2 and the main body plate 1, so that the main body plate 1, the left shell body 21 and the right shell body 22 form a disassembly structure through the plurality of fixing bolts 32, thereby facilitating the assembly of the device and saving time for cleaning and maintenance. Two groups of grooves 11 are machined on the inner wall of the main body plate 1, and fixing plates 12 are inserted into the outer sides of the two groups of grooves 11. The fixing plates 12 are radially fixed by the grooves 11 to prevent the fixing plates 12 from sliding during use and causing the filter plate 41 to shake, thereby improving the stability of the fire-blocking core assembly 4. A connecting rod 13 is arranged through the inner side of the fixing plate 12, and the diameter of the connecting rod 13 is equal to the diameter of the fixing ring 42, so that the connecting rod 13 is tightly connected to the fixing ring 42, and the connecting rod 13 passes through the fixing block 13a and The fixing ring 42 can fix the position of the fire-blocking core assembly 4, and is easy to install and disassemble by inserting and fixing, so as to facilitate the maintenance of the fire-blocking core assembly 4. The outer wall of the connecting rod 13 is threadedly connected with two groups of fixing blocks 13a, and the fixing blocks 13a are fixed on the connecting rod 13, similar to nuts being screwed on bolts, so as to limit the position of the fire-blocking core assembly 4 and improve the stability of the device, and prevent the filter plate 41 from being impacted and causing its position to shift, so that the shock wave passes through the fire-blocking core assembly 4, thereby reducing the fire-blocking effect, and the connection between the connecting rod 13 and the filter plate 41 and the fixing plate 12 is fixed with corresponding flat keys 12a, and the flat keys 12a can further limit the position of the filter plate 41, thereby preventing it from rotating and improving the stability of the device. Several groups of filter plates 41 are coaxially arranged, and the outer wall of the filter plate 41 is in contact with the inner wall of the main plate 1, which can prevent the shock wave from passing through the side wall of the filter plate 41 and the shock wave from passing through the filter plate 41, thereby preventing the flame from spreading.
[0034] The flame arrester shock wave redirecting device provided by the utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0035] Insert the fixing plate 12 horizontally into the groove 11 on the left side of the main plate 1, screw the fixing block 13a on one side of the connecting rod 13, and pass the end of the connecting rod 13 away from the fixing block 13a through the fixing plate 12. At this time, the connecting rod 13 coincides with the central axis of the main plate 1, and then insert several groups of filter plates 41 in the order of aperture from roughly small to large in sequence on the outside of the connecting rod 13. At this time, the outer wall of the filter plate 41 is tightly fitted with the inner wall of the main plate 1, and at the same time, the flat key 12a on the outside of the connecting rod 13 is recessed and carded with the inner side of the fixing ring 42, and then install another group of fixing plates 12 in the groove 11 on the right side of the main plate 1, tighten the fixing ring 42 on the right side of the connecting rod 13, and then tighten the other end of the connecting rod 13 with the fixing block 13a to fix it, and buckle the left shell 21 and the right shell 22 on the main plate 1, by inserting several groups of fixing bolts 32 into the flange ring and tightening the nuts to fix it, and then installing it on the adapted pipe. When a fire occurs on one side of the pipe, the flame shock wave passes through the left shell 21 and contacts the spiral blade 23, and is evenly divided into several groups of spiral airflows by the spiral blade 23. The spiral airflow forms an angle with the horizontal filter plate 41, so that the shock wave does not pass through the pores of the filter plate 41 in a straight line but hits the side wall of the pore. When the shock wave passes through the filter plate 41, a part of the free radicals generated by the explosion contacts the side wall of the large-aperture pore. Due to the reduction of the pore, the area of the side wall of the pore increases, and the free radicals that pass through the first layer of the filter plate 41 can contact the side wall of the pore again. Through the wall effect, the number of free radicals is reduced, so that the combustion reaction cannot continue, thereby avoiding the spread of flames.
[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0037] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.
Claims
1. A flame arrester shock wave redirection device, characterized in that: include: A shell (2), the shell (2) is used to buffer the high-speed linear impact of flame shock waves, the shell (2) comprises a left shell (21) and a right shell (22), and the left shell (21) and the right shell (22) are respectively arranged on the left and right sides of the main body plate (1), a plurality of groups of spiral blades (23) are distributed on the inner circumference of the left shell (21) and the right shell (22), a fire-blocking core assembly (4) is engaged at the center of the inner side of the main body plate (1), the fire-blocking core assembly (4) comprises at least one filter plate (41), and a plurality of filter plates (41) are arranged in a stacked manner along the inner diameter axis direction of the main body plate (1); The filter plates (41) near the two ends of the main plate (1) have a larger filter aperture than the filter plate (41) near the center of the main plate (1), and a fixing ring (42) penetrating the filter plate (41) is provided at the center of the inner side of each of the plurality of filter plates (41).
2. A flame arrester shock wave redirection device according to claim 1, characterized in that: Two groups of flange rings (31) are arranged around the outer sides of the left housing (21) and the right housing (22), and a plurality of groups of fixing bolts (32) are arranged through the inner sides of the two groups of flange rings (31).
3. A flame arrester shock wave redirection device according to claim 2, characterized in that: The main body plate (1), the left housing (21) and the right housing (22) form a disassembly structure through a plurality of sets of fixing bolts (32).
4. A flame arrester shock wave redirection device according to claim 3, characterized in that: Two groups of grooves (11) are machined on the inner wall of the main body plate (1), and fixing plates (12) are inserted on the outer sides of the two groups of grooves (11).
5. A flame arrester shock wave redirection device according to claim 4, characterized in that: A connecting rod (13) is provided through the inner side of the fixing plate (12), and the diameter of the connecting rod (13) is equal to the diameter of the fixing ring (42).
6. A flame arrester shock wave redirection device according to claim 5, characterized in that: The outer wall of the connecting rod (13) is threadedly connected with two groups of fixing blocks (13a), and corresponding flat keys (12a) are fixed at the connection points between the connecting rod (13) and the filter plate (41) and the fixing plate (12).
7. The flame arrester shock wave redirection device according to claim 1, characterized in that: A plurality of groups of filter plates (41) are coaxially arranged, and the outer wall of the filter plate (41) is in contact with the inner wall of the main body plate (1).
8. The flame arrester shock wave redirection device according to claim 1, characterized in that: The plurality of groups of spiral blades (23) are welded to the left shell (21) and the right shell (22) to form an integrated structure.
9. The flame arrester shock wave redirection device according to claim 7, characterized in that: The gaps between the plurality of groups of filter plates (41) are in a horizontal straight line state.
10. The flame arrester shock wave redirecting device according to claim 7, characterized in that: A plurality of groups of filter plates (41) are symmetrically arranged about the vertical center line of the main body plate (1).