Oxyhydrogen flame dry type and water seal type series fire retardant device

Abstract

The utility model discloses an oxyhydrogen flame dry type and water seal type series connection fire retardant device, which belongs to the technical field of flame arresters and comprises a gas inlet, a dry type flame arrester and a gas outlet. The dry-type flame arrester comprises a flame arresting core and winding filaments, a plurality of through holes are formed in the flame arresting core in a penetrating mode, and the through holes are filled with the winding filaments. And the air outlet is communicated with the air inlet through the dry-type flame arrester. Compared with a conventional dry-type flame arrester, the diameter of the through hole in the flame arresting core is large, and the through hole is filled with the winding filaments. And the filament is wound by the silk thread with toughness to form a porous structure with gaps, so that the hydrogen and oxygen gas can normally circulate. When tempering occurs in equipment, flames need to pass through the winding filaments, and spreading of the flames is stopped under the heat transfer of the winding filaments and the wall effect. When the dry-type flame arrester is blocked, the wire winding can be independently pulled out to be cleaned or replaced, and the flame arresting core is reserved, so that the cleaning difficulty is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flame arresters, in particular to an oxyhydrogen flame dry type and water seal type series fire arrester device. Background Art

[0002] An oxyhydrogen flame generator, a device that generates a high-temperature flame by reacting hydrogen and oxygen, is widely used in welding, cutting, and material processing. Controlling the hydrogen and oxygen mixture ratio and the reaction environment in an oxyhydrogen flame generator is crucial for ensuring safety. An imbalance in the hydrogen and oxygen concentrations, or improper operation of the equipment, can cause flashback.

[0003] A flame arrester is a safety device used to prevent flames or heat from flowing back into equipment. It is categorized as either dry or wet. The core components of a dry flame arrester are typically multi-layered metal mesh, corrugated sheets, and a porous flame arrester core. These components prevent the spread of flames through heat conduction and the vessel wall effect. Wet flame arresters, on the other hand, utilize the evaporative cooling effect of liquids and their oxygen-suppressing properties to suppress the spread of flames. Dry flame arresters are effective in preventing explosive flames but struggle to consistently prevent combustion flames. Wet flame arresters, on the other hand, are effective in preventing combustion flames but struggle to prevent explosive flames.

[0004] Therefore, in some environments with higher safety requirements, wet flame arresters are combined with dry flame arresters to provide a dual protection effect. The flame-blocking effect of a dry flame arrester is generally determined by the pore size of the flame arrester core. The smaller the pore size, the more significant the wall effect. However, as the pore diameter decreases, the risk of clogging of the flame arrester core increases. This is especially true when used in series with a wet flame arrester. The humid environment exacerbates corrosion of the pipe wall and produces impurities. Combined with the impurities carried by the hydrogen and oxygen gases, the pores of the flame arrester core are easily clogged, resulting in a decrease in the flow rate of the hydrogen and oxygen gases. Once clogged, the flame arrester core is extremely difficult to clear and sometimes has to be replaced entirely. Utility Model Content

[0005] The purpose of the utility model is to provide an oxyhydrogen flame dry type and water seal type series fire arrester to solve the problems raised in the above-mentioned prior art.

[0006] Provided is an oxyhydrogen flame dry type and water seal type series fire arrester device, comprising:

[0007] air intake;

[0008] A dry flame arrester comprises a flame arrester core and a wound wire, wherein the flame arrester core is penetrated by a plurality of through holes, and the wound wire is filled in the through holes;

[0009] An air outlet is connected to the air inlet through a dry flame arrester.

[0010] Furthermore, the device further includes a wet flame arrester, and the gas flows in sequence along the air inlet, the wet flame arrester, the dry flame arrester, and the air outlet. After the dry flame arrester stops the explosion flame, the wet flame arrester can also stop the continuous combustion flame to provide sufficient safety.

[0011] Furthermore, the winding wire is a metal wire ball with gaps formed by winding metal wire. The metal wire has the characteristics of strong toughness, good thermal conductivity and high strength. After being wound into the winding wire, it can maintain its own shape unchanged and has a high degree of fit with the shape of the through hole after being formed.

[0012] Furthermore, the wire wrapping includes a main body formed by closely arranged metal wires and a porous body wound around the main body. The main body can enhance the overall strength of the wire wrapping, prevent excessive deformation, and facilitate the removal of the wire wrapping as a whole during cleaning.

[0013] Furthermore, a limiter is provided at one end of the filament winding near the air outlet. The limiter is located outside the through hole and has a diameter larger than the diameter of the through hole. The limiter limits the filament winding at the air outlet end of the through hole, preventing the filament winding from being pulled out of the through hole due to its own weight, equipment vibration, or external surge pressure.

[0014] Furthermore, the limiting portion is a ball of wire wound together and is integrally formed with the filament winding. The limiting portion can be directly formed by a portion of the filament winding body, without the need for additional components and fixation, thus simplifying the processing technology.

[0015] Furthermore, the limiting portion is composed of a metal mesh, and the wire winding is fixedly connected to the limiting portion. The metal mesh has regular pores at the air outlet end of the through hole to resist partial tempering, and simultaneously plays a role of fire resistance and limiting.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Compared to conventional dry flame arresters, the through-holes on the flame arrester core of the present application have a larger diameter, and the interior of the through-holes is filled with wire wrapping. The wire wrapping is formed by winding tough silk threads to form a porous structure with gaps, which allows the normal circulation of hydrogen and oxygen gases. When the equipment flashes back, the flame must pass through the wire wrapping, and the heat transfer of the wire wrapping and the wall effect prevent the spread of the flame. When the dry flame arrester is blocked, the wire wrapping can be pulled out separately for cleaning or replacement, while retaining the flame arrester core, which reduces the difficulty of cleaning and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present drawings 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, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of an oxyhydrogen flame dry type and water seal type series fire arrester.

[0020] In the figure: 1. Air inlet; 2. Dry flame arrester; 21. Flame arrester core; 22. Wire wrap; 23. Through hole; 24. Limiting portion; 3. Air outlet; 4. Wet flame arrester. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0022] Obviously, the drawings described below are merely examples or embodiments of the present application. Those skilled in the art can, without inventive effort, apply the present application to other similar scenarios based on these drawings. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, changes in design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in this application.

[0023] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repetitive descriptions of substantially identical structures may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Furthermore, the drawings and the following description are provided to facilitate a thorough understanding of this application by those skilled in the art and are not intended to limit the subject matter recited in the claims.

[0024] See also Figure 1As shown, the oxyhydrogen flame dry-type and water-sealed series fire arrester device in an embodiment of the present invention includes an air inlet 1, a dry flame arrester 2, and an air outlet 3. The dry flame arrester 2 includes a fire arrester core 21 and a wound wire 22. The fire arrester core 21 is penetrated by a plurality of through-holes 23, and the wound wire 22 fills the interior of the through-holes 23. The air outlet 3 is connected to the air inlet 1 through the dry flame arrester 2.

[0025] The filaments 22 are formed by winding a flexible silk thread. The resulting porous coil maintains its shape and has interconnected pores for the flow of hydrogen and oxygen gases. During a flashback, the flame passes through the through-holes 23 and contacts the filaments 22. The irregular pores of the filaments 22 separate the flame into multiple smaller streams, effectively blocking the flame through the wall effect. Furthermore, the filaments 22 conduct heat to the walls of the flame-blocking core 21 through their inherent thermal conductivity, contributing to a certain degree of flame arrestment.

[0026] After the winding wire 22 is filled into the through hole 23, it is fixed to the through hole 23 by friction resistance. When the winding wire 22 is blocked, the winding wire 22 can be pulled out from the through hole 23 for cleaning, and can be reused or replaced without replacing the fire-blocking core 21, which can improve cleaning efficiency and reduce maintenance costs.

[0027] The fire arrester also includes a wet flame arrester 4, which provides a multi-layered protection when the fire arresting capacity of the dry flame arrester 2 is insufficient. The dry flame arrester 2 mainly blocks the explosion flame and partially blocks the continuous combustion flame, while the wet flame arrester 4 can block the remaining continuous combustion flame.

[0028] Specifically, the winding wire 22 is a metal wire ball with gaps formed by winding metal wires. The metal wire has good toughness and thermal conductivity at the same time, which is conducive to controlling the pore density of the forming. The winding wire 22 includes a main body formed by the closely arranged metal wires and a porous body formed by winding around the main body. The pore density formed by the main body is low and the strength is high, which plays a role in overall support and deformation prevention. The pore density formed by the porous body is high, which is the main channel for the circulation of hydrogen and oxygen gases and has a diversion effect on tempering. The existence of the main body makes it convenient to insert the winding wire 22 into the through hole 23 or to pull the winding wire 22 out of the through hole 23. During this period, the uniformity of the pore density of the winding wire 22 in the length section can be maintained as much as possible.

[0029] A stopper 24 is provided on the end of the filament winding 22 near the air outlet 3. This stopper 24 is located outside the through hole 23 and has a larger diameter than the through hole 23. When the air outlet 3 flashes back, the explosion causes a surge in pressure within the pipe. The frictional resistance between the filament winding 22 and the inner wall of the through hole 23 cannot offset this pressure, causing the filament winding 22 to slip or even detach from the through hole 23. Therefore, the stopper prevents the filament winding 22 from sliding within the through hole 23 toward the air inlet 1, maintaining its stability.

[0030] In one embodiment, the limiting portion 24 is a ball of wire wound together and the limiting portion 24 is integrally formed with the winding wire 22. In this solution, the limiting portion 24 and the winding wire 22 can be processed together, which can simplify the processing technology.

[0031] In one embodiment, the stopper 24 is formed of a metal mesh, and the filament 22 is fixedly connected to the stopper 24 by twisting or welding. The metal mesh has regular pores at the outlet end of the through hole 23 to resist partial tempering, while also providing a flame barrier and a position limiter.

[0032] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A hydrogen-oxygen flame dry type and water seal type series fire arrester, characterized in that: include: Air inlet (1); A dry-type flame arrester (2) comprises a flame arrester core (21) and a wound wire (22), wherein the flame arrester core (21) is penetrated by a plurality of through holes (23), and the wound wire (22) is filled in the through holes (23); An air outlet (3) is connected to the air inlet (1) through a dry flame arrester (2).

2. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 1, characterized in that: It also includes a wet flame arrester (4), and the gas flows in sequence along the air inlet (1), the wet flame arrester (4), the dry flame arrester (2) and the air outlet (3).

3. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 1, characterized in that: The filament winding (22) is a metal wire ball with gaps formed by winding metal wires.

4. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 3, characterized in that: The wire wrapping (22) comprises a main body formed by closely arranged metal wires and a porous body formed by wrapping around the main body.

5. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 1, characterized in that: A limiting portion (24) is provided at one end of the winding filament (22) close to the air outlet (3), wherein the limiting portion (24) is located outside the through hole (23) and the diameter of the limiting portion (24) is larger than the diameter of the through hole (23).

6. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 5, characterized in that: The limiting portion (24) is a silk ball formed by winding silk threads, and the limiting portion (24) and the winding wire (22) are integrally formed.

7. The oxyhydrogen flame dry type and water seal type series fire arrester according to claim 5, characterized in that: The limiting portion (24) is composed of a metal mesh, and the winding wire (22) is fixedly connected to the limiting portion (24).

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