阅读说明：本技术 一种多层孔板式防冻阻火器 (Multilayer orifice plate type anti-freezing flame arrester ) 是由 崔学文 袁玮骏 高鹏 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种多层孔板式防冻阻火器,具体涉及阻火器技术领域,包括第一外壳,所述第一外壳的顶端螺纹设有第二外壳,所述第一外壳的下方设有第三外壳,所述第一外壳的底端可与第三外壳的顶端螺纹连接,所述第二外壳和第三外壳的外端均固定设有两个固定板。本发明通过监测结构和阻火器壳体内部的设计,保证阻火盘的通孔孔径符合相应的防爆燃、防爆轰要求,该种结构的阻火盘由于定位销的加入,可以保证每层阻火盘安装时通孔的100%重合率,保障了装置组装的稳定性,同时该种结构的阻火盘可以适应极端温度,且本装置结构灵活,易于检测、维修以及清洗以确保阻火器性能达到使用目的。(The invention discloses a multilayer orifice plate type anti-freezing flame arrester, and particularly relates to the technical field of flame arresters. The design of the monitoring structure and the inner part of the flame arrester shell ensures that the aperture of the through hole of the flame arrester plate meets the corresponding requirements of deflagration and explosion protection, the flame arrester plate with the structure can ensure 100 percent of coincidence rate of the through hole when each layer of flame arrester plate is installed due to the addition of the positioning pin, the stability of the device assembly is ensured, and meanwhile, the flame arrester plate with the structure can adapt to extreme temperature.)

1. A multilayer orifice plate type anti-freezing flame arrester comprises a first shell (1), and is characterized in that: the top end thread of the first shell (1) is provided with a second shell (2), a third shell (3) is arranged below the first shell (1), the bottom end of the first shell (1) is in threaded connection with the top end of the third shell (3), two fixing plates (6) are fixedly arranged at the outer ends of the second shell (2) and the third shell (3), a preformed hole (7) is formed in each fixing plate (6), a first connecting pipe (4) is arranged at the top end thread of the second shell (2), a second connecting pipe (5) is arranged at the bottom end thread of the third shell (3), the first shell (1), the second shell (2), the third shell (3), the first connecting pipe (4) and the second connecting pipe (5) are communicated with each other inside, and internal threads are formed inside the first connecting pipe (4) and the second connecting pipe (5), the top of first connecting pipe (4) is equipped with monitoring structure and ultrasonic cleaning structure, the monitoring structure divide into and shines structure and projection structure, it establishes the top at the projection structure to shine the structure, the fixed spark arrester casing (8) that is equipped with in inside of first shell (1), the inside of spark arrester casing (8) is inserted and is equipped with a plurality of and hinders fire plate (9), hinder fire plate (9) and distribute from top to bottom, hinder the top of fire plate (9) and all seted up a plurality of through-hole (10) and two locating holes (11), through-hole (10) and two locating holes (11) all run through and hinder fire plate (9), two the outside at through-hole (10) is all established in locating hole (11), the inside of locating hole (11) is equipped with location structure.

2. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: flame arrester casing (8) arranges back-fire relief dish (9) of 1 to 20 layers according to the back-fire relief demand, the material of back-fire relief dish (9) is stainless steel, aluminum alloy or titanium alloy material, the thickness of back-fire relief dish (9) is 0.1mm ~10mm, and the shape is rectangle, circular, square or arc.

3. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: the fire retardant disc is characterized in that through holes (10) in the fire retardant disc (9) are formed by laser drilling, the size and the position of each hole are uniform and consistent, the through holes (10) are straight holes or inclined holes, the aperture range of the through holes (10) in the fire retardant disc (9) is 0.01 mm-10 mm, the through holes (10) in the fire retardant disc (9) are arranged in concentric circles by taking the center of the fire retardant disc (9) as the center of the circle, and the surface area ratio of the through holes (10) in the fire retardant disc (9) to the fire retardant disc (9) is 10% -80%.

4. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: the positioning structure comprises a positioning pin (13), the positioning pin (13) is arranged between two adjacent positioning holes (11) from top to bottom, the positioning holes (11) are connected with the positioning pin (13) in an inserting mode, the top end and the bottom end of the positioning pin (13) extend into the interior of the two adjacent positioning holes (11) from top to bottom respectively, the positioning holes, the positioning pin (11), the bottom end and the top end of the positioning pin (13) are in contact, an adjusting gasket (12) is sleeved on the outer end of the positioning pin (13), and the adjusting gasket (12) is arranged between the two adjacent positioning holes (11) from top to bottom and in contact with the positioning holes.

5. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: shine the structure including fixed pipe (14), the bottom of fixed pipe (14) and the female connection of first connecting pipe (4), the fixed condenser tube (15) that is equipped with in top of fixed pipe (14), the fixed electric putter (16) that is equipped with in top of condenser tube (15), the bottom of electric putter (16) passes the inside of fixed pipe (14), condenser tube (15) and first connecting pipe (4) in proper order and extends into the inside of second shell (2), the bottom mounting of condenser tube (15) is equipped with LED lamp (17), the inside at second shell (2) is established in LED lamp (17), the top at a plurality of through-holes (10) is established in LED lamp (17).

6. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: the projection structure comprises a detection box (18) and a bottom plate (23), the bottom plate (23) is arranged at the bottom end of the detection box (18) and is in threaded connection with the detection box (18), the detection box (18) is arranged between the first shell (1) and the third shell (3), the top end of the detection box (18) is in threaded connection with the bottom end of the first shell (1), a light-transmitting projection plate (20) is fixedly arranged inside the detection box (18), a sealing box (21) is fixedly arranged at the top end of the bottom plate (23), a miniature video camera is fixedly arranged inside the sealing box (21), a light-transmitting sealing cover (22) is arranged at the top end of the sealing box (21) in a threaded manner, the light-transmitting sealing cover (22) is arranged inside the detection box (18) and below the light-transmitting projection plate (20), the miniature video camera is connected with the computer through a USB interface and is used for processing shot images.

7. The multilayer orifice plate type antifreeze flame arrester of claim 4, wherein: the fire retardant disc is characterized in that the upper surface and the lower surface of the fire retardant disc (9) and the inner surface of the through hole (10) are coated with a nano composite super-hydrophobic material, the using temperature reaches-250 ℃ to 600 ℃, the coating thickness of the nano composite super-hydrophobic material is 10-50 mu m, the heat conductivity coefficient of the nano composite super-hydrophobic material is larger than or equal to that of a base material of the fire retardant disc (9), and the positioning pin (13) penetrates through the positioning hole (11) in the fire retardant disc (9) and ensures that the through hole (10) in each layer of the fire retardant disc (9) has 100% overlap ratio.

8. The multilayer orifice plate type antifreeze flame arrester of claim 1, wherein: the ultrasonic cleaning structure comprises a transparent upper pipe (24) and a lower pipe (25), the bottom end of the transparent upper pipe (24) is in threaded connection with the top end of the first connecting pipe (4), the top end of the lower pipe (25) is in threaded connection with the bottom end of the second connecting pipe (5), the bottom end of the lower pipe (25) is provided with an ultrasonic cleaning instrument (26), the top end of the ultrasonic cleaning instrument (26) is fixedly provided with a cover plate through a bolt, the bottom end of the lower pipe (25) penetrates through the cover plate and extends into the ultrasonic cleaning instrument (26), the lower pipe (25) is in threaded connection with the cover plate, the interior of the ultrasonic cleaning instrument (26) is communicated with cleaning fluid, a water inlet pipe and a water outlet pipe are respectively and fixedly arranged at the two sides of the ultrasonic cleaning instrument (26), all fixedly on inlet tube and the outlet pipe be equipped with the valve, the bottom screw thread of low tube (25) is equipped with strains box (27), it establishes inside ultrasonic cleaner (26) to strain box (27).

9. The multilayer orifice plate type antifreeze flame arrester of claim 4, wherein: the adjusting gasket (12) ensures that the gap between each layer of fire retardant disc (9) is less than or equal to the aperture of the through hole (10), or the height is adjusted according to the actual situation.

10. The multilayer orifice plate type antifreeze flame arrestor of claim 6, wherein: two grooves (19) are formed in the bottom end of the bottom plate (23).

Technical Field

The invention relates to the technical field of flame arresters, in particular to a multilayer perforated plate type anti-freezing flame arrester.

Background

The fire arrester is a safety device for preventing the inflammable gas or inflammable liquid steam in the pipeline from being ignited accidentally and the flame from spreading along the pipeline to cause explosion, and is widely applied to pipelines for conveying or discharging inflammable gas, such as a thousand-torch system, a heating furnace fuel gas system, a petroleum gas recovery system or other inflammable gas systems, and the like, and can effectively ensure the safety of the whole system device and a use point.

The pipeline flame arrester is divided into an anti-deflagration flame arrester and an anti-detonation flame arrester, and the flame arrester is arranged on a pipeline or at the top end of a storage tank and is used for preventing flame from spreading. The fire retardant disc is a main component of the fire retardant device for preventing flame from spreading, a fire retardant disc filter element adopted by the pipeline fire retardant device in the prior art is commonly provided with a metal mesh filter element and a corrugated filter element, and the metal mesh filter element is formed by overlapping multiple layers of stainless steel or copper meshes with the diameter of 0.23-0.315 mm.

The prior art has the following defects: the domestic flame arrester generally adopts 16 ~ 22 mesh metal mesh, for 4~12 layers, the reduction of passageway size has met the bottleneck, lead to the fire relief coil pipe way among the prior art not to reach reasonable resistance coefficient, the back-fire relief effect is unsatisfactory, the uniformity of size and form and position size in each aperture can not be realized to metal mesh filter core and ripple type filter core, can not realize 100% the requirement of the biggest safety clearance of back-fire relief, and do not have freeze-proof performance, consequently, the back-fire relief layer structure of current flame arrester has wire net type or ripple type, these two big types of flame arresters receive the restriction of traditional processing technology, its antiknock impact capacity is poor, also can not improve heat transfer effect and wall effect again, in addition, the detection and the washing operation of flame arrester are comparatively inconvenient, and whether detect the flame arrester and block up is the indispensable operation of guaranteeing that the flame arrester performance reaches the use purpose.

Disclosure of Invention

Therefore, the invention provides a multilayer perforated plate type anti-freezing flame arrester, which ensures that the aperture of a through hole of a flame-retardant plate meets the corresponding requirements of deflagration and explosion protection by monitoring the design of a structure and the inside of a flame arrester shell, the flame-retardant plate with the structure can ensure 100 percent of coincidence rate of the through hole when each layer of flame-retardant plate is installed due to the addition of a positioning pin, the stability of the assembly of the device is ensured, meanwhile, the flame-retardant plate with the structure can adapt to extreme temperature, the device has flexible structure, is easy to detect and maintain to ensure that the performance of the flame arrester achieves the use purpose, in addition, the arrangement of an ultrasonic cleaning structure ensures that the blockage inside the through hole of the flame-retardant plate is cleared after flame retardance, so as to solve the problems that the flame-retardant coil pipeline cannot achieve reasonable resistance coefficient, the flame-retardant effect is unsatisfactory, and the sizes and the shapes and positions of each aperture can not be consistent with the metal mesh filter core and the corrugated filter core in the prior art, the requirement of the maximum safety gap of fire retardance can not be realized by 100 percent, and the flame arrester does not have the anti-freezing performance, is limited by the traditional processing technology, has poor anti-detonation impact capability, can not improve the heat transfer effect and the wall effect, is inconvenient to detect and clean the flame arrester, and can not ensure that the performance of the flame arrester can reach the using purpose.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a multilayer orifice plate type anti-freezing flame arrester comprises a first shell, wherein a second shell is arranged on the top thread of the first shell, a third shell is arranged below the first shell, the bottom end of the first shell can be connected with the top thread of the third shell, two fixing plates are fixedly arranged at the outer ends of the second shell and the third shell, a reserved hole is formed in each fixing plate, a first connecting pipe is arranged on the top thread of the second shell, a second connecting pipe is arranged on the bottom thread of the third shell, the first shell, the second shell, the third shell, the first connecting pipe and the second connecting pipe are communicated with each other, internal threads are formed in the first connecting pipe and the second connecting pipe, a monitoring structure is arranged at the top end of the first connecting pipe and is divided into an irradiation structure and a projection structure, and the irradiation structure is arranged above the projection structure, the fixed spark arrester casing that is equipped with in inside of first shell, the inside of spark arrester casing is inserted and is equipped with a plurality of fire stopping plate, and is a plurality of fire stopping plate distributes from top to bottom, and is a plurality of through-hole and two locating holes have all been seted up on fire stopping plate's top, and is a plurality of fire stopping plate, two are all run through to through-hole and two locating holes and fire stopping plate, two the locating hole is all established in the outside of a plurality of through-holes, the inside of locating hole is equipped with location structure.

Further, the flame arrester casing can arrange 1 to 20 layers of fire retardant disc according to the fire arrest demand, the material of fire retardant disc is stainless steel, aluminum alloy or titanium alloy material, the thickness of fire retardant disc is 0.1mm ~10mm, and the shape is rectangle, circular, square or arc.

Furthermore, a plurality of through holes in the fire retardant disc are formed by laser drilling, the size and the position of each hole are uniform and consistent, the through holes are straight holes or inclined holes, the aperture range of the through holes in the fire retardant disc is 0.01 mm-10 mm, the through holes in the fire retardant disc are arranged in concentric circles by taking the center of the fire retardant disc as the center of the circle, and the surface area ratio of the through holes in the fire retardant disc to the fire retardant disc is 10% -80%.

Furthermore, the positioning structure comprises a positioning pin, the positioning pin is arranged between two adjacent positioning holes, the positioning holes are inserted into the positioning pin, the top end and the bottom end of the positioning pin respectively extend into the two adjacent positioning holes and are in contact with the two adjacent positioning holes, an adjusting gasket is sleeved at the outer end of the positioning pin, and the adjusting gasket is arranged between the two adjacent positioning holes and is in contact with the two adjacent positioning holes.

Further, shine the structure including fixed pipe, the bottom of fixed pipe and the female connection of first connecting pipe, the fixed condenser tube that is equipped with in top of fixed pipe, the fixed electric putter that is equipped with in top of condenser tube, electric putter's bottom passes the inside of fixed pipe, condenser tube and first connecting pipe in proper order and extends into the inside of second shell, the bottom mounting of condenser tube is equipped with the LED lamp, the LED lamp is established in the inside of second shell, the top at a plurality of through-holes is established to the LED lamp.

Further, the projection structure is including detecting box and bottom plate, the bottom plate is established in the bottom that detects the box and with detect box threaded connection, it establishes between first shell and third shell to detect the box, the top of detecting the box and the bottom threaded connection of first shell, the fixed printing opacity projection board that is equipped with in inside that detects the box, the fixed seal box that is equipped with in top of bottom plate, the fixed miniature video camera that is equipped with in inside of seal box, the top thread of seal box is equipped with printing opacity sealed lid, the sealed lid of printing opacity is established in the inside that detects the box and is established in the below of printing opacity projection board, miniature video camera is connected with the computer through the USB interface and is used for handling the image of shooing.

Furthermore, the upper surface and the lower surface of the fire retardant plate and the inner surface of the through hole are coated with the nano composite super-hydrophobic material, the use temperature can reach-250 ℃ to 600 ℃, the coating thickness of the nano composite super-hydrophobic material is 10-50 mu m, the heat conductivity coefficient of the nano composite super-hydrophobic material is more than or equal to that of the base material of the fire retardant plate, and the positioning pin penetrates through the positioning hole in the fire retardant plate and ensures that the through hole in each layer of the fire retardant plate has 100% overlap ratio.

Further, the ultrasonic cleaning structure includes transparent top tube and low tube, the bottom of transparent top tube can with the top threaded connection of first connecting pipe, the top of low tube can with the bottom threaded connection of second connecting pipe, the bottom of low tube is equipped with the ultrasonic cleaning appearance, the top of ultrasonic cleaning appearance is equipped with the apron through the bolt fastening, the bottom of low tube runs through the inside and low tube and the apron threaded connection that the apron extends into the ultrasonic cleaning appearance, the inside washing liquid that leads to of ultrasonic cleaning appearance, the both sides of ultrasonic cleaning appearance are fixed inlet tube and the outlet pipe of being equipped with respectively, all fixed being equipped with the valve on inlet tube and the outlet pipe, the bottom screw thread of low tube is equipped with the cartridge, the cartridge is established inside the ultrasonic cleaning appearance.

Further, the adjusting gasket ensures that the gap between each layer of fire retardant plate is smaller than or equal to the aperture of the through hole, or the height is adjusted according to actual conditions.

Furthermore, two grooves are formed in the bottom end of the bottom plate.

The embodiment of the invention has the following advantages:

1. according to the invention, through laser drilling of the through holes on the fire retardant discs, the positions and the distribution of the through holes on a single-layer fire retardant disc can be ensured to be relatively consistent, the coincidence rate of the through holes on a plurality of layers of fire retardant discs can also be ensured, the gap between each layer of fire retardant discs is smaller than or equal to the aperture of the through holes, the heat transfer area and the heat convection space of the fire retardant discs are increased on the premise of ensuring the maximum safe gap of fire retardant, the heat dissipation can be enhanced by the plurality of layers of fire retardant discs, and the wall effect can be ensured, compared with the prior art, the aperture of the through holes of the fire retardant discs can be ensured to meet the corresponding requirements of explosion prevention and explosion prevention, and the 100% coincidence rate of the through holes can be ensured when each layer of fire retardant discs are installed due to the addition of the positioning pins, and the stability of device assembly is ensured;

2. according to the invention, the nano composite super-hydrophobic material is coated on the fire retardant disc, so that water vapor in the through hole can not be adhered to the surface of the low-temperature machine body from the beginning, and the water vapor can not be thermally conducted with the surface of the machine body and can not be self-crystallized into water drops and recrystallized into ice, and the water vapor can not be adhered to the fire retardant disc;

3. the invention screws the bottom end of a fixed tube and the top end of a first connecting tube by screw threads, unscrews a third shell to separate the third shell from the first shell, screws a detection box and the bottom end of the first shell by screw threads, starts an electric push rod, extends the electric push rod to enable an LED lamp to move downwards into the second shell, starts a micro video camera inside the LED lamp and a sealing box, enables the LED lamp to work and shine, enables the LED lamp to emit light downwards, enables the light to be emitted on a light-transmitting projection plate through a non-blocked through hole to leave light spots, enables the light not to pass through the blocked through hole, enables no light spots on the light-transmitting projection plate to be left, enables the light spots left on the light-transmitting projection plate to be shot by the micro video camera, rotates to take down the detection box, rotationally closes the third shell and the first shell to buckle two grooves at the bottom end of a bottom plate, rotates the bottom plate to take down and separate the detection box, opens a light-transmitting sealing cover, connects a USB interface of the micro video camera with a computer to analyze and process the shot image, if the number of the light spots is complete, the through hole is not blocked, otherwise, the through hole is blocked, and the blocked position can be checked according to the distribution condition of the light spots on the light-transmitting projection plate so as to be convenient for maintenance and treatment;

4. the invention screws the transparent upper pipe and the lower pipe with the first connecting pipe and the second connecting pipe respectively, screws the bottom end of the lower pipe with the cover plate, opens the valve on the water inlet pipe of the ultrasonic cleaner, introduces the cleaning liquid into the ultrasonic cleaner, the water level of the cleaning liquid continuously rises and spreads through the through hole until the liquid level of the cleaning liquid is seen through the transparent upper pipe, closes the valve, starts the ultrasonic cleaner, the ultrasonic cleaner works to generate impact waves to the fire retardant disc and the through hole, so that the solid dirt on the fire retardant disc and the through hole falls into the filter box, opens the valve on the water outlet pipe of the ultrasonic cleaner after cleaning, discharges the used cleaning liquid in the ultrasonic cleaner, finally unscrews the lower pipe and the second connecting pipe, unscrews the bolt on the cover plate, and unscrews the filter box from the bottom end of the lower pipe from the lower part of the cover plate, clear away the inside solid filth of filter cartridge, compare with prior art, the ultrasonic wave cleans the setting up of structure and makes the stopper of fire blocking dish inside through-hole after carrying out the back fire relief and is clear away, can not influence the flame arrester and use next time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic view of an overall front view structure provided by the present invention;

FIG. 2 is a schematic view of a structure provided by the present invention that does not include a projection;

FIG. 3 is a schematic structural view of the fire retardant disk cleaning apparatus according to the present invention;

FIG. 4 is a schematic cross-sectional front view of the first housing according to the present invention;

FIG. 5 is a schematic bottom view of the light-gathering tube, the electric push rod and the LED lamp according to the present invention;

FIG. 6 is a schematic view of a light-gathering tube, an electric push rod and an LED lamp according to the present invention;

FIG. 7 is an exploded view of a firestop disc, spacer shim and locating pin arrangement provided by the present invention;

FIG. 8 is a schematic top view of a projection structure provided in the present invention;

FIG. 9 is a schematic view of the interior of a projection configuration provided by the present invention;

FIG. 10 is a schematic view of the interior of a projection configuration provided by the present invention;

in the figure: 1. a first housing; 2. a second housing; 3. a third housing; 4. a first connecting pipe; 5. a second connecting pipe; 6. a fixing plate; 7. reserving a hole; 8. a flame arrestor housing; 9. a fire retardant tray; 10. a through hole; 11. positioning holes; 12. adjusting the gasket; 13. positioning pins; 14. a fixed tube; 15. a light-gathering tube; 16. an electric push rod; 17. an LED lamp; 18. a detection cartridge; 19. a groove; 20. a light-transmissive projection plate; 21. a sealing box; 22. a light-transmitting sealing cover; 23. a bottom plate, 24 and a transparent upper pipe; 25. a lower pipe; 26. an ultrasonic cleaning instrument; 27. and (4) a filter box.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.

Referring to the attached drawings 3, 4 and 7 in the specification, the multilayer orifice plate type antifreezing fire arrestor of the embodiment comprises a first shell 1, wherein a second shell 2 is arranged at the top end of the first shell 1 in a threaded manner, a third shell 3 is arranged below the first shell 1, the bottom end of the first shell 1 can be in threaded connection with the top end of the third shell 3, two fixing plates 6 are fixedly arranged at the outer ends of the second shell 2 and the third shell 3, a reserved hole 7 is formed in each fixing plate 6, a first connecting pipe 4 is arranged at the top end of the second shell 2 in a threaded manner, a second connecting pipe 5 is arranged at the bottom end of the third shell 3 in a threaded manner, the first shell 1, the second shell 2, the third shell 3, the first connecting pipe 4 and the second connecting pipe 5 are communicated with each other in an inner part, inner threads are formed in each first connecting pipe 4 and the second connecting pipe 5, a fire arrestor shell 8 is fixedly arranged in the first shell 1, a plurality of fire retardant discs 9 are inserted into the flame arrester shell 8, the fire retardant discs 9 are distributed up and down, a plurality of through holes 10 and two positioning holes 11 are formed in the top ends of the fire retardant discs 9, the through holes 10 and the positioning holes 11 penetrate through the fire retardant discs 9, the two positioning holes 11 are formed in the outer sides of the through holes 10, and positioning structures are arranged inside the positioning holes 11;

the positioning structure comprises a positioning pin 13, the positioning pin 13 is arranged between two adjacent positioning holes 11, the positioning holes 11 are inserted into the positioning pin 13, the top end and the bottom end of the positioning pin 13 respectively extend into the two adjacent positioning holes 11 and are in contact with the positioning holes 11, an adjusting gasket 12 is sleeved at the outer end of the positioning pin 13, and the adjusting gasket 12 is arranged between the two adjacent positioning holes 11 and is in contact with the positioning holes 11.

Flame arrester casing 8 can arrange 1 to 20 layers's back-fire relief dish 9 according to the back-fire relief demand, the material of back-fire relief dish 9 is stainless steel, aluminum alloy or titanium alloy material, the thickness of back-fire relief dish 9 is 0.1mm ~10mm, and the shape is rectangle, circular, square or arc, is favorable to reaching better back-fire relief effect.

The through holes 10 in the fire retardant disc 9 are all formed by laser drilling, the size and the position of each hole are uniform and consistent, the through holes 10 are all straight holes or inclined holes, a good fire retardant effect is guaranteed, and meanwhile regular detection is conveniently carried out on the through holes 10.

The aperture ranges of the through holes 10 on the fire retardant disc 9 are all 0.01 mm-10 mm, the through holes 10 on the fire retardant disc 9 are arranged in a concentric circle mode by taking the center of the fire retardant disc 9 as the circle center, and the through holes 10 are favorable for dividing flame into small flame, so that the fire retardant effect is better achieved.

The surface area ratio of the through holes 10 on the fire retardant plate 9 to the fire retardant plate 9 is 10-80%, and the fine through holes 10 are beneficial to extinguishing flame.

The upper surface and the lower surface of the fire retardant disc 9 and the inner surface of the through hole 10 are coated with a nano composite super-hydrophobic material, the service temperature can reach-250 ℃ to 600 ℃, the coating thickness of the nano composite super-hydrophobic material is 10-50 mu m, the heat conductivity coefficient of the nano composite super-hydrophobic material is larger than or equal to that of a base material of the fire retardant disc 9, the fire retardant performance of the fire retardant disc 9 is improved, the positioning pin 13 penetrates through the positioning hole 11 in the fire retardant disc 9 and ensures that the through hole 10 in each layer of fire retardant disc 9 has 100% overlap ratio, and the positioning pin 13 positions the multi-layer fire retardant discs and ensures that the through holes 10 are aligned vertically.

The adjusting gasket 12 ensures that the gap between each layer of fire retardant disc 9 is less than or equal to the aperture of the through hole 10, or the height is adjusted according to actual conditions, and under the premise of ensuring the maximum safe gap of fire retardant, the heat transfer area and the heat convection space of the fire retardant disc 9 are increased.

The implementation scenario is specifically as follows: sleeving an adjusting gasket 12 on a positioning pin 13, inserting a plurality of positioning pins 13 into two positioning holes 11 which are adjacent up and down respectively, wherein the adjusting gasket 12 is positioned between the two fire retardant disks 9 which are adjacent up and down, sequentially assembling the fire retardant disks 9 from top to bottom, inserting the whole formed by the fire retardant disks 9 into a flame arrester shell 8, when flame passes through the inside of the through holes 10, the flame becomes a plurality of tiny flames, the fire retardant disks 9 and the inside of the through holes 10 are coated with nano composite super-hydrophobic materials, enlarging the contact area of the tiny flames and the through holes 10, enhancing heat transfer, reducing the temperature of the flame below a firing point, thereby preventing the flame from spreading, the through holes 10 on the fire retardant disks 9 are drilled by laser, ensuring that the positions and the distribution of the through holes 10 on a single-layer fire retardant disk 9 are consistent, and ensuring the coincidence rate of the through holes 10 on the multi-layer fire retardant disks 9, the clearance between each layer of fire retardant disc 9 is less than or equal to the aperture of the through hole 10, on the premise of ensuring the maximum safety clearance of fire retardant, the heat transfer area and the heat convection space of the fire retardant disc 9 are increased, the multilayer fire retardant discs 9 can strengthen heat dissipation and can ensure the wall effect, the device ensures that the aperture of the through hole 10 of the fire retardant disc 9 meets the corresponding requirements of deflagration prevention and explosion prevention, the fire retardant disc 9 with the structure can ensure 100 percent of coincidence rate of the through hole 10 when each layer of fire retardant disc 9 is installed due to the addition of the positioning pin 13, the stability of device assembly is ensured, the implementation mode specifically solves the problems that the fire retardant coil pipeline in the prior art cannot achieve reasonable resistance coefficient, the fire retardant effect is unsatisfactory, the metal mesh filter core and the corrugated filter core cannot achieve the consistency of the size and the shape and position size of each aperture, the requirement of the maximum safety clearance of fire retardant cannot be achieved 100 percent, and the anti-freezing performance is not achieved, the flame arrester is limited by the traditional processing technology, has poor anti-detonation impact capability, and can not improve the heat transfer effect and the wall effect any more.

Referring to fig. 3 and 10 of the specification, the embodiment of the multilayer orifice plate type freeze arrestor, the ultrasonic cleaning structure comprises a transparent upper tube 24 and a lower tube 25, the bottom end of the transparent upper tube 24 can be connected with the top end of the first connecting tube 4 by screw threads, the top end of the lower tube 25 can be connected with the bottom end of the second connecting tube 5 by screw threads, the bottom end of the lower pipe 25 is provided with an ultrasonic cleaning instrument 26, the top end of the ultrasonic cleaning instrument 26 is fixedly provided with a cover plate through a bolt, the bottom end of the lower tube 25 extends into the ultrasonic cleaner 26 through the cover plate and the lower tube 25 is connected with the cover plate by screw thread, the inside of the ultrasonic cleaning instrument 26 is filled with cleaning liquid, a water inlet pipe and a water outlet pipe are respectively and fixedly arranged at the two sides of the ultrasonic cleaning instrument 26, all fixedly on inlet tube and the outlet pipe be equipped with the valve, the bottom screw thread of low tube 25 is equipped with filters box 27, it establishes inside ultrasonic cleaner 26 to filter box 27.

The implementation scenario is specifically as follows: after fire retardance, the transparent upper pipe 24 and the lower pipe 25 are screwed with the first connecting pipe 4 and the second connecting pipe 5 respectively, then the bottom end of the lower pipe 25 is screwed with the cover plate, as shown in fig. 3, a valve on a water inlet pipe of the ultrasonic cleaning instrument 26 is opened, cleaning liquid is introduced into the ultrasonic cleaning instrument 26, the water level of the cleaning liquid continuously rises and spreads through the through hole 10 until the liquid level of the cleaning liquid is seen through the transparent upper pipe 24, then the valve is closed, the ultrasonic cleaning instrument 26 is started, the ultrasonic cleaning instrument 26 works to generate impact waves to the fire blocking plate 9 and the through hole 10 by the cleaning liquid, so that solid dirt on the fire blocking plate 9 and the through hole 10 falls into the filter box 27, after cleaning is finished, the valve on the ultrasonic cleaning instrument 26 is opened to discharge used cleaning liquid in the ultrasonic cleaning instrument 26, and finally the lower pipe 25 is unscrewed with the second connecting pipe 5, unscrew the bolt on the apron again, can follow the apron below and unscrew filter cartridge 27 from lower pipe 25 bottom, clear away the inside solid filth of filter cartridge 27, the ultrasonic wave cleans setting up of structure and makes the fire retardant dish carry out the inside stopper of back through-hole of back fire relief and is clear away, can not influence the spark arrester and use once more down, and this embodiment has specifically solved among the prior art fire retardant dish and has carried out the inside easy production of back through-hole of back fire relief and block, influences the problem of spark arrester and use once more down.

Referring to the attached fig. 1-9 of the specification, the multilayer orifice plate type anti-freezing flame arrester of the embodiment is characterized in that the top end of the first connecting pipe 4 is provided with a monitoring structure, the monitoring structure is divided into an irradiation structure and a projection structure, and the irradiation structure is arranged above the projection structure;

the irradiation structure comprises a fixed pipe 14, the bottom end of the fixed pipe 14 is connected with the internal thread of a first connecting pipe 4, a light-gathering pipe 15 is fixedly arranged at the top end of the fixed pipe 14, an electric push rod 16 is fixedly arranged at the top end of the light-gathering pipe 15, the bottom end of the electric push rod 16 sequentially penetrates through the fixed pipe 14, the light-gathering pipe 15 and the first connecting pipe 4 and extends into the second shell 2, an LED lamp 17 is fixedly arranged at the bottom end of the light-gathering pipe 15, the LED lamp 17 is arranged in the second shell 2, and the LED lamp 17 is arranged above the through holes 10;

the projection structure includes detection box 18 and bottom plate 23, bottom plate 23 establish the bottom of detecting box 18 and with detection box 18 threaded connection, detection box 18 establishes between first shell 1 and third shell 3, the top of detecting box 18 and the bottom threaded connection of first shell 1, the fixed printing opacity projection board 20 that is equipped with in inside of detecting box 18, the fixed seal box 21 that is equipped with in top of bottom plate 23, the fixed miniature camera machine that is equipped with in inside of seal box 21, the top thread of seal box 21 is equipped with printing opacity sealed lid 22, printing opacity sealed lid 22 is established in the inside of detecting box 18 and is established in the below of printing opacity projection board 20, the miniature camera machine is connected with the computer through the USB interface and is used for handling the image of shooing.

Two grooves 19 are formed in the bottom end of the bottom plate 23, and the grooves 19 facilitate a detector to take out the miniature video camera inside the sealing box 21.

The implementation scenario is specifically as follows: screwing the bottom end of the fixed tube 14 and the top end of the first connecting tube 4, unscrewing the third shell 3 to separate the third shell 3 from the first shell 1, screwing the detection box 18 and the bottom end of the first shell 1, starting the electric push rod 16, extending the electric push rod 16 to enable the LED lamp 17 to move downwards into the second shell 2, starting the LED lamp 17 and the micro video camera inside the sealing box 21, enabling the LED lamp 17 to work and emit light rays downwards, enabling the light rays to be emitted onto the light-transmitting projection plate 20 through the non-blocked through hole 10 to leave light spots, enabling the light rays not to pass through the blocked through hole 10, leaving no light spots on the light-transmitting projection plate 20, enabling the light spots left on the light-transmitting projection plate 20 to be shot by the micro video camera, rotating to remove the detection box 18, rotating the third shell 3 and the first shell 1 to be closed, buckling the two grooves 19 at the bottom end of the bottom plate 23, rotating the bottom plate 23 to be removed and separated from the detection box 18, open sealed lid 22 of printing opacity, connect the image that analysis processes shot with the USB interface and the computer of miniature camcorder, if facula quantity is complete, then through-hole 10 does not have the jam condition to appear, otherwise, then through-hole 10 appears blockking up and the light spot distribution condition that blocks up the position and can follow on printing opacity projection board 20 looks over so that maintain and handle, this device structure is nimble, easily detect and maintain and reach the use purpose in order to ensure the spark arrester performance, this embodiment has specifically solved in the prior art in addition the detection operation of spark arrester comparatively inconvenient, can't ensure the problem that the spark arrester performance reaches the use purpose.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.