阅读说明：本技术 一种使用3d打印曲线通孔阻火盘的阻火器 (Use 3D to print spark arrester of curved through-hole fire blocking plate ) 是由 郝立顺 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种使用3D打印曲线通孔阻火盘的阻火器,属于阻火器新技术领域,其包括上壳体和下壳体,阻火盘安装槽内设置有至少2个阻火盘,阻火盘的通道沿所述阻火盘的厚度方向上呈曲线设置,它是采用3D打印技术加工的阻火盘,是一块带有曲线通孔的实体金属盘,即增大了阻火盘通道合理阻力系数,也减小了自由基与分子之间的碰撞几率,又增加了传热作用；于此同时增加了通道长度进而增加了自由基与通道壁的接触面积,反而增加了自由基与通道壁的碰撞几率,而且3D打印技术使得阻火盘的通道沿阻火盘的厚度方向上呈曲线设置提高了通道的曲线复杂度,进一步增加了自由基与通道壁的碰撞几率,最终降低了自由基反应并提高了阻火效果。(The invention discloses a flame arrester using a 3D printing curve through hole fire-resisting disc, which belongs to the new technical field of flame arresters and comprises an upper shell and a lower shell, wherein at least 2 fire-resisting discs are arranged in a fire-resisting disc mounting groove, and a channel of each fire-resisting disc is arranged in a curve along the thickness direction of the fire-resisting disc; meanwhile, the length of the channel is increased, the contact area between the free radicals and the channel wall is increased, the collision probability between the free radicals and the channel wall is increased, the 3D printing technology enables the channel of the fire retardant plate to be arranged in a curve along the thickness direction of the fire retardant plate, the curve complexity of the channel is improved, the collision probability between the free radicals and the channel wall is further increased, and finally, the free radical reaction is reduced and the fire retardant effect is improved.)

1. the utility model provides an use 3D to print spark arrester that curve through-hole hinders fire tray, a serial communication port, the last casing that has flange and lower casing that the fire tray set up including the longitudinal symmetry, go up the casing with the casing adopts flange reciprocal anchorage down, go up the casing with the position that the inner wall of casing is close to casing flange down is provided with fire tray mounting groove, it hinders fire tray to be provided with 2 at least in the fire tray mounting groove, and is adjacent hinder and be provided with the space between the fire tray, the passageway that hinders fire tray is followed be the curve setting on the thickness direction that hinders fire tray.

2. A flame arrestor as defined in claim 1, wherein the fire retardant disk has a channel that is helically disposed along a thickness of the fire retardant disk in a curved configuration, the channel having at least one arc of curvature along the thickness of the fire retardant disk.

3. A flame arrestor as defined in claim 1, wherein the fire retardant disc has channels uniformly distributed along a thickness direction of the fire retardant disc, and the fire retardant disc has a channel diameter of ≧ 0.3 mm.

4. A flame arrestor as defined in claim 1, wherein the flame retardant disks have passages uniformly arrayed in a circumferential direction of the flame retardant disks, the flame retardant disks being fabricated using 3D printing techniques.

5. A flame arrestor as defined in claim 4, wherein adjacent fire stop plates are spaced apart by 4 ~ 8mm, and the fire stop plate passages are arranged in an S-shaped curve along the thickness of the fire stop plates.

Technical Field

The invention relates to the technical field of flame arresters, in particular to a flame arrester using a 3D printing curve through hole flame-retardant disc.

Background

The flame arrester is a safety device for preventing the explosion caused by the flame spread along the pipeline due to the accidental ignition of flammable gas or flammable liquid vapor in the pipeline, is widely applied to pipelines for conveying or discharging flammable gas, such as a torch system, a heating furnace fuel gas system, a petroleum gas recovery system or other flammable gas systems, and can effectively ensure the safety of the whole system device and a use point.

The pipeline flame arrester is divided into an anti-detonation flame arrester and an anti-detonation flame arrester, the flame arrester is arranged on a pipeline or at the top end of a storage tank and used for preventing flame from spreading, the non-technical description is that detonation refers to rapid combustion, the combustion speed is lower than the sound speed, detonation refers to explosion or the gas spreading speed is higher than the sound speed, a flame arrester disc is a main component of the flame arrester for preventing flame spreading, a flame arrester disc filter element adopted by the pipeline flame arrester in the prior art is commonly provided with a metal mesh filter element and a corrugated filter element, the metal mesh filter element and the corrugated filter element cannot realize regular complex pipelines, the metal mesh filter element is made of stainless steel or copper mesh with the diameter of 0.23 ~ 0.315.315 mm, and the metal mesh filter element is formed by overlapping multiple layers, the domestic flame arrester generally adopts a 16 ~ 22 mesh metal mesh, which is 4 ~ 12 layers, the traditional drilling process is relatively mature, and comprises an electric spark arrester coil, the traditional drilling process cannot process a complicated curve flame arrester path, so that the traditional drilling process cannot achieve a bottleneck of reasonable flame arrester path resistance coefficient, and the traditional heat transfer effect cannot be limited by the traditional spark arrester.

Disclosure of Invention

The invention provides a flame arrester using a 3D printing curve through hole fire-arresting disc, which increases the reasonable resistance coefficient of a channel of the fire-arresting disc by processing the fire-arresting disc by adopting a 3D printing technology, further reduces the collision probability between free radicals and molecules, increases the length of the channel at the same time, further increases the contact area between the free radicals and the channel wall, and increases the collision probability between the free radicals and the channel wall, and the 3D printing technology improves the curve complexity of the channel, further increases the collision probability between the free radicals and the channel wall, finally reduces the free radical reaction and improves the fire-arresting effect.

the specific technical scheme provided by the invention is as follows:

The flame arrester using the 3D printing curved through hole fire stopping disc comprises an upper shell and a lower shell which are arranged up and down symmetrically and provided with connecting flanges, the upper shell and the lower shell are fixed with each other through the connecting flanges, fire stopping disc installation grooves are formed in the positions, close to the shell connecting flanges, of the inner walls of the upper shell and the lower shell, at least 2 fire stopping discs are arranged in the fire stopping disc installation grooves, gaps are formed between every two adjacent fire stopping discs, and channels of the fire stopping discs are arranged in a curved manner in the thickness direction of the fire stopping discs.

Optionally, the channel of the fire retardant plate is arranged in a curved spiral shape along the thickness direction of the fire retardant plate, and the channel of the fire retardant plate is provided with at least one bending radian along the thickness direction of the fire retardant plate.

Optionally, the passageway of hindering the fire dish is followed evenly distributed on the thickness direction of hindering the fire dish, just hinder the passageway diameter of fire dish ≧ 0.3 mm.

Optionally, the channels of the fire retardant disc are uniformly distributed in an array manner in the circumferential direction of the fire retardant disc, and the fire retardant disc is manufactured by adopting a 3D printing technology.

optionally, the distance between adjacent fire retardant disks is 4 ~ 8mm, and the channel of the fire retardant disk is arranged along the thickness direction of the fire retardant disk in an S-shaped curve.

The invention has the following beneficial effects:

The embodiment of the invention provides a flame arrester using a 3D printing curve through hole flame retardant disc, which comprises an upper shell and a lower shell which are symmetrically arranged from top to bottom and provided with connecting flanges, wherein the upper shell and the lower shell are mutually fixed by the connecting flanges, the positions, close to the shell connecting flanges, of the inner walls of the upper shell and the lower shell are provided with flame retardant disc mounting grooves, at least 2 flame retardant discs are arranged in the flame retardant disc mounting grooves, gaps are formed between the adjacent flame retardant discs, channels of the flame retardant discs are arranged in a curve manner along the thickness direction of the flame retardant discs, and the flame retardant discs processed by adopting a 3D printing technology are solid metal discs with curve through holes, so that the reasonable resistance coefficient of the channels of the flame retardant discs is increased, the collision probability between free radicals and molecules is also reduced, and the heat transfer effect is also increased; meanwhile, the length of the channel is increased, the contact area between the free radicals and the channel wall is increased, the collision probability between the free radicals and the channel wall is increased, the 3D printing technology enables the channel of the fire retardant plate to be arranged in a curve along the thickness direction of the fire retardant plate, the curve complexity of the channel is improved, the collision probability between the free radicals and the channel wall is further increased, and finally the free radical reaction is reduced and the fire retardant effect is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of a flame arrestor using a 3D printed curvilinear through-hole flame retardant disk in accordance with an embodiment of the invention;

FIG. 2 is a schematic isometric view of a firestop disc according to an embodiment of the present invention;

FIG. 3 is a schematic sectional view of a fire barrier disc according to an embodiment of the invention

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A flame arrestor using a 3D printed curvilinear through-hole flame retardant disk in accordance with an embodiment of the invention will now be described in detail with reference to fig. 1 ~ and fig. 3.

Referring to fig. 1, 2 and 3, a flame arrester using a 3D-printed curved through-hole flame retardant disc according to an embodiment of the present invention includes an upper shell 2 and a lower shell 3, which are symmetrically disposed up and down, and each of the upper shell 2 and the lower shell 3 has a connecting flange 1, the upper shell 2 and the lower shell 3 are fixed to each other by the connecting flange 1, a flame retardant disc installation groove 4 is disposed on an inner wall of the upper shell 2 and the lower shell 3 at a position close to the shell connecting flange, at least 2 flame retardant discs 5 are disposed in the flame retardant disc installation groove 4, a gap is disposed between 2 adjacent flame retardant discs 5, that is, opposite surfaces of the adjacent 2 flame retardant discs are not in contact with each other, an air gap is disposed between the adjacent 2 flame retardant discs to improve a flame retardant effect of the flame arrester according to the embodiment of the present invention, and a passage of the flame retardant discs 5 is curved in a thickness direction of the flame retardant discs 5.

Further, referring to fig. 2 and 3, the channel of the fire retardant disc 5 according to the embodiment of the present invention is spirally disposed along the thickness direction of the fire retardant disc 5 in a curved manner, and the channel of the fire retardant disc 5 has at least two curved radians along the thickness direction of the fire retardant disc 5, wherein specifically, the channel of the fire retardant disc 5 is disposed along the thickness direction of the fire retardant disc 5 in an S-shaped curve, and may be formed by a plurality of sections of S-shaped curves, and each section of S-shaped curve has at least 1 curved radian. Referring to fig. 2 and 3, the channels of the fire retardant disc 5 according to the embodiment of the invention are uniformly distributed in an array along the circumferential direction of the fire retardant disc 5, the fire retardant disc 5 is manufactured by a 3D printing technology, and the 3D printing technology can realize the processing of fire retardant discs with complex curved pipelines. The fire retardant plate with the curved through holes for 3D printing can improve the strength of the fire retardant plate and can fully meet the detonation impact resistance, so that the heat transfer effect and the wall effect of the fire retardant device are further improved.

In an example, the fire retardant disc with a complex curve pipeline is processed by using the existing selective laser melting technology in the 3D printing technology, the mechanical property, the size precision and the like of a formed part are ensured to be good by adopting higher laser energy density and finer spot diameter, the formed part can be put into use only by simple post-treatment, and raw materials used for forming do not need to be specially prepared. The selective laser melting technology has the following advantages: (1) directly manufacturing the metal functional part without intermediate working procedures; (2) the functional parts with complex geometric shapes can be directly manufactured; (3) the fine light beam quality can be obtained, and the fine focusing light spot can be obtained, so that the functional piece with higher dimensional accuracy and better surface roughness can be directly manufactured; (4) the powder material can be a single material or a multi-component material, and the raw material does not need to be specially prepared; (5) the metal powder is completely melted, and the directly manufactured metal functional part has metallurgical bonding structure, higher density and better mechanical property without post-treatment; (6) the selective laser melting forming technology can obtain a formed part with metallurgical bonding, compact structure, high dimensional accuracy and good mechanical property, and is a main development trend of rapid forming in recent years.

Further, referring to fig. 2 and 3, the channels of the fire retardant disc 5 are uniformly distributed along the thickness direction of the fire retardant disc 5, the diameter of the channel of the fire retardant disc 5 is 0.3mm, and the contact area between the free radicals and the channel wall is increased by increasing the reasonable resistance coefficient of the channel of the fire retardant disc 5.

Flame arrestors prevent the spread of a flame by simply lowering the temperature of the burning substances below their ignition point during use. The flame will become several tiny flames after passing through many tiny channels of the flame retardant plate. When the fire retardant disc in the fire retardant device is designed, the contact area between the fine flame and the channel wall is enlarged as much as possible, the heat transfer is enhanced, the temperature of the flame is reduced to be below the ignition point, and the flame is prevented from spreading. The fire retardant disc used by the fire retardant device in the embodiment of the invention realizes reasonable resistance coefficient of the channel of the fire retardant disc by adopting a 3D printing technology, further realizes the expansion of the contact area of fine flame and the channel wall, improves the heat transfer efficiency of the fire retardant disc, and can quickly reduce the flame temperature below the ignition point, thereby preventing the flame from spreading.

The combustion and explosion are not direct intermolecular reaction, but are excited by external energy, molecular bonds are destroyed to generate activated molecules, the activated molecules are split into short-lived but very active free radicals, the free radicals collide with other molecules to generate new products, and meanwhile, new free radicals are generated to continue to react with other molecules. When the combustible gas is passed through the narrow passage of the flame-retardant disk, the collision probability of the free radicals with the passage wall is increased, and the free radicals participating in the reaction are reduced. When the passage of the flame arrester is narrow to a certain extent, the collision of free radicals with the passage wall is predominant, and the reaction cannot proceed, i.e. the combustion reaction cannot continue to propagate through the flame arrester, because the number of free radicals decreases drastically.

As the flame arrestor channel decreases in size, the probability of collision between the free radicals and the reactive molecules decreases, while the probability of collision between the free radicals and the channel wall increases, thus promoting a decrease in free radical reactions. When the channel size is reduced to a certain value, this wall effect creates a condition where the flame cannot continue to propagate, i.e. the flame is stopped. The wall effect is therefore the primary mechanism for flame prevention. Therefore, the channel of the fire retardant plate is spirally arranged along the thickness direction of the fire retardant plate 5 in a curve manner, and the channel of the fire retardant plate 5 at least has one bending radian along the thickness direction of the fire retardant plate 5, so that in the process of flame propagation in the channel, because the bending complexity of the channel is high, the collision probability of free radicals and the channel wall is high, the free radical reaction is further promoted to be reduced, and the flame propagation can be well prevented.

The embodiment of the invention provides a flame arrester using a 3D printing curve through hole flame retardant disc, which comprises an upper shell and a lower shell which are symmetrically arranged from top to bottom and provided with connecting flanges, wherein the upper shell and the lower shell are mutually fixed by the connecting flanges, the positions, close to the shell connecting flanges, of the inner walls of the upper shell and the lower shell are provided with flame retardant disc mounting grooves, at least 2 flame retardant discs are arranged in the flame retardant disc mounting grooves, gaps are formed between the adjacent flame retardant discs, channels of the flame retardant discs are arranged in a curve manner along the thickness direction of the flame retardant discs, and the flame retardant discs processed by adopting a 3D printing technology are solid metal discs with curve through holes, so that the reasonable resistance coefficient of the channels of the flame retardant discs is increased, the collision probability between free radicals and molecules is also reduced, and the heat transfer effect is also increased; meanwhile, the length of the channel is increased, the contact area between the free radicals and the channel wall is increased, the collision probability between the free radicals and the channel wall is increased, the 3D printing technology enables the channel of the fire retardant plate to be arranged in a curve along the thickness direction of the fire retardant plate, the curve complexity of the channel is improved, the collision probability between the free radicals and the channel wall is further increased, and finally the free radical reaction is reduced and the fire retardant effect is improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.