CN115445122A - Fire arrester - Google Patents
Fire arrester Download PDFInfo
- Publication number
- CN115445122A CN115445122A CN202211119110.0A CN202211119110A CN115445122A CN 115445122 A CN115445122 A CN 115445122A CN 202211119110 A CN202211119110 A CN 202211119110A CN 115445122 A CN115445122 A CN 115445122A
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- fire
- sides
- shell
- flame
- retardant
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- Pending
Links
- 239000003063 flame retardant Substances 0.000 claims abstract description 67
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 14
- 239000007789 gas Substances 0.000 description 4
- 241000883990 Flabellum Species 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to the field of fire retardant equipment, and discloses a fire retardant device which comprises a shell, wherein a flame retardant area is arranged in the shell, connecting blocks are respectively arranged on two sides of the shell, connecting pipes are arranged on the sides of the connecting blocks on the two sides, which are far away from each other, connecting discs are arranged on the connecting pipes, the fire retardant device is connected to pipelines on the two sides through the connecting discs, when a fire breaks out in the pipeline on one side, a fire source can be blocked by the flame retardant area through the flame retardant area, so that the purpose of fire retardant is achieved, the flame retardant device can effectively resist the fire through the arrangement of a guide device and a buffer device, and the buffer of a flame retardant area can be realized while the fire retardant is achieved, so that the situation that the internal fire retardant of the existing fire retardant device is generally impacted by strong airflow generated by explosion, so that the fire retardant device is broken or deformed and damaged, and the fire retardant device loses the fire retardant function.
Description
Technical Field
The invention relates to the field of fire retardant equipment, in particular to a fire retardant device.
Background
The structure of a traditional flame arrester mainly comprises a flame arrester element (often called a flame arrester core), a flame arrester shell and a connecting flange. The fire retardant core is used for preventing flame from passing through; the flame arrester shell is used for ensuring that combustible gas flows through the flame arrester in a sealed manner; the attachment flange is used to mount a flame arrestor to the pipeline in the field, or to the gas storage oil tank being protected, the flame arrestor typically being mounted at the end of the pipeline to prevent flame from propagating to the other end of the pipeline in the event of a fire or explosion at the end of the pipeline. Under normal operating conditions, the gas in the conduit flows through the flame arrestor at a design flow rate. When the detonation accident takes place for pipeline one end, because the explosion effect, violent inflation can take place for gaseous volume in the pipeline, the shock wave that these expanded gases went into can flow to the pipeline both ends with the speed that exceeds normal velocity of flow hundred times, the air current that becomes super high sound velocity flow in the pipeline, when these air currents flowed through the spark arrester, can cause damage, deformation to the spark arrester, make the spark arrester lose the back-fire relief ability, and then lead to flame to pass the spark arrester, the messenger does not also take place interlinkage firing explosion in pipeline one end of firing. The effect of spark arrester is when a fire or explosion take place on one side of the spark arrester, prevents that flame from conducting the opposite side that does not have a fire, prevents that the pipeline from linking the explosion of starting a fire, and the back-fire relief original paper in traditional spark arrester often all takes place to start a fire when exploding in pipeline one end, and the inside back-fire relief original paper of spark arrester all generally appears and is impacted by the strong air current that the explosion produced to being punctured or being out of shape the damage, making the spark arrester lose the back-fire relief function, we have proposed a spark arrester for this reason.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a flame arrester, which solves the problems.
(II) technical scheme
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a fire arrestor, includes the shell, the inside of shell is provided with fire-retardant interval and constitutes, the both sides of shell are provided with the connecting block respectively, and one side that the connecting block of both sides deviates from each other all is provided with the connecting pipe, install the connection pad on the connecting pipe, in the time of in-service use, utilize the connection pad to be connected to this equipment to the pipeline of both sides, when on fire in the pipeline of one of them side, the burning things which may cause a fire disaster can be obstructed by it through fire-retardant interval to accomplish the purpose of back-fire relief.
Preferably, the connecting flanges are fixedly mounted on the side wall surfaces of the connecting blocks on the two sides, which are close to each other, the connecting flanges on the two sides are connected through long bolts, the shell is fixedly provided with a connecting ring, and the connecting ring is sleeved with the long bolts.
Preferably, the connecting block is the toper, both sides its inner wall diameter of connecting block for from being close to shell one side to keeping away from shell one side and diminishing gradually, consequently when catching fire in the connecting pipe of one of them side, its fire source can be according to the shape of connecting block flaring, the subassembly spreads out, then fully contacts fire-retardant interval, further promotion back-fire relief effect.
Preferably, the guiding devices are respectively arranged on two sides of the flame-retardant interval, and the fire source can be uniformly separated by the guiding devices, so that the fire source is dispersed, the effective flame-retardant effect of the flame-retardant interval is achieved, and the flame-retardant effect is effectively achieved.
Preferably, the guiding device comprises a mounting plate, a connecting disc and fire inlet pipes, the fire inlet pipes are fixedly connected with the inner wall of the shell, the fire inlet pipes on two sides are respectively mounted on the wall surfaces of the fire inlet pipes which are away from each other, the fire inlet pipes are arranged at equal intervals, a plurality of groups of fire inlet pipes are connected through the connecting disc, the fire inlet pipes extend into the connecting block, the lengths of the fire inlet pipes are gradually increased from the side close to the inner wall of the connecting block to the middle area, so that a fire source entering the middle area can firstly enter the fire inlet pipe in the middle area, fire sources scattered from the periphery can gradually enter the fire inlet pipes on the edge, and the fire source in the middle area can be temporarily stored in the fire inlet pipe in the middle area for a long time, so that the fire sources can be gradually consumed in the fire inlet pipes, the scattered fire sources can be weakened, and the flame retardant effect can be further enhanced.
Preferably, fire-retardant regional including four layers of back-fire relief layers, fixed mounting has the board of crossing fire between fire-retardant region and the guider, it is the disc to cross the board of fire, cross and seted up the circular hole of multiunit on the board of fire, thereby the burning things which may cause a fire disaster can enter into fire-retardant region through circular hole to further increase flame retardant efficiency.
Preferably, four groups the both sides of back-fire relief layer are provided with the fly leaf, the fly leaf is the ring shape, the inner wall laminating of fly leaf and shell is connected through buffer between the fly leaf of both sides, through having set up buffer, therefore can cushion the impact force of air in the cavity when fire-retardant.
Preferably, two corresponding inner wall grooves are formed in the inner wall of the shell, sliding blocks are fixedly mounted on the movable plates corresponding to the inner wall grooves, the sliding blocks are matched with the inner wall grooves, the sliding blocks are movably clamped with the inner wall grooves, and the buffer devices are arranged between the sliding blocks on the movable plates on the two sides.
Preferably, buffer includes pipe, inserted bar and spring, and fixed mounting has the inserted bar on the slider of both sides one side wall face that is close to each other, the pipe cup joints on the inserted bar, the spring sets up the inside at the pipe, and the spring setting is between the inserted bar of both sides, and when carrying out fire-retardant, the fly leaf can be moved by the impact this moment, and the shrink is seted up to the spring this moment, accomplishes after fire-retardant, and the spring resets.
Preferably, the air flow pipe is installed on the connecting pipe on the right side, a shell is arranged at the top of the air flow pipe, a rotating shaft is installed on the inner wall of the top of the shell through a moving part, fan blades are fixedly installed on the installation end of the rotating shaft, and when air flows pass through the connecting pipe, the air flows can enter the shell from the air flow pipe so as to drive the fan blades to rotate, so that the fact that the air flows in the equipment can be judged.
(III) advantageous effects
Compared with the prior art, the invention provides a flame arrester, which has the following beneficial effects:
1. this spark arrester utilizes the connection pad to be connected to on the pipeline of both sides with this equipment, when on fire in the pipeline of one of them side, the fire source can be obstructed by it through fire-retardant interval, thereby accomplish the purpose of back-fire relief, and can effectively be fire-retardant through having set up guider and buffer, and can play the buffering to fire-retardant region when fire-retardant, thereby the inside back-fire relief original paper that has avoided current spark arrester all the ubiquitous strong air current that is produced by the explosion strikes, thereby be punctured or the deformation damage, make the spark arrester lose the back-fire relief function.
2. This spark arrester, shell one side diminishes gradually, consequently when catching fire in the connecting pipe of one of them side, its fire source can be according to the shape of connecting block flaring, and the subassembly expands and scatters, then fully contacts fire-retardant interval, further promotion back-fire relief effect.
3. This spark arrester can evenly separate the burning things which may cause a fire disaster through having set up guider for the burning things which may cause a fire disaster dispersion, thereby reach by the effective fire-retardant effect in fire-retardant interval, consequently effectual fire-retardant effect of having reached.
4. This fire arrestor, the fire disaster that the middle zone got into can follow the fire tube of getting into of middle zone earlier and get into, and the fire disaster that scatters from the periphery can follow the fire tube of getting into of edge entering gradually, because the time length that the fire disaster of middle zone can be kept in the fire tube of getting into in the centre to can be consumed gradually in the inside of getting into the fire tube, the fire disaster that disperses can weaken, consequently further enhancement flame retardant efficiency.
5. This spark arrester crosses and has seted up the circular hole of multiunit on the fire board, thereby the burning things which may cause a fire disaster can enter into fire-retardant region through circular hole to further increase flame retardant efficiency.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
fig. 4 is a schematic view of the guide device.
In the figure: 1. a housing; 2. a connecting flange; 3. connecting blocks; 4. a connecting pipe; 5. a connecting disc; 6. a connecting ring; 7. a long bolt; 8. mounting a disc; 9. connecting the disc; 10. fire inlet pipe; 11. a fire plate; 12. a fire barrier layer; 13. an airflow duct; 14. a housing; 15. a rotating shaft; 16. a fan blade; 17. an inner wall groove; 18. a slider; 19. a circular tube; 20. a rod is inserted; 21. a spring; 22. a movable plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
Referring to fig. 1-4, a flame arrester comprises a shell 1, flame-retardant sections are arranged inside the shell 1, connecting blocks 3 are arranged on two sides of the shell 1 respectively, connecting pipes 4 are arranged on the sides, deviating from each other, of the connecting blocks 3 on the two sides, connecting discs 5 are mounted on the connecting pipes 4, the equipment is connected to pipelines on the two sides through the connecting discs 5 in actual use, when a fire breaks out in the pipeline on one side, a fire source can be blocked by the flame-retardant sections, and therefore the purpose of fire prevention is achieved.
Further, equal fixed mounting has flange 2 on the connecting block 3 of both sides is close to each other one side wall, and flange 2 of both sides passes through the stay bolt 7 to be connected, and fixed mounting has go-between 6 on the shell 1, and go-between 6 cup joints together with stay bolt 7.
Further, connecting block 3 is the toper, and its inner wall diameter of connecting block 3 of both sides diminishes for keeping away from 1 one side of shell to from being close to 1 one side of shell gradually, consequently when catching fire in the connecting pipe 4 of one of them side, its burning things which may cause a fire disaster can be according to the shape of connecting block 3 flaring, and the subassembly expands and scatters, then fully contacts fire-retardant interval, further promotion back-fire relief effect.
Furthermore, the two sides of the flame-retardant interval are respectively provided with the guide devices, and the fire source can be uniformly separated by the guide devices, so that the fire source is dispersed, the effective flame-retardant effect of the flame-retardant interval is achieved, and the flame-retardant effect is effectively achieved.
Furthermore, the guiding device comprises a mounting plate 8, a connecting plate 9 and fire inlet pipes 10, the fire inlet pipes 10 are fixedly connected with the inner wall of the shell 1, the fire inlet pipes 10 on two sides are respectively mounted on the wall surfaces of the fire inlet pipes 10 which are far away from each other, the fire inlet pipes 10 are arranged at equal intervals, a plurality of groups of fire inlet pipes 10 are connected through the connecting plate 9, the fire inlet pipes 10 extend into the connecting block 3, the lengths of the fire inlet pipes 10 are gradually increased from the side close to the inner wall of the connecting block 3 to the side located in the middle area, so that the fire source entering the middle area can firstly enter the fire inlet pipe 10 in the middle area, the fire source scattered from the periphery can gradually enter the fire inlet pipes 10 at the edge, and the fire source in the middle area can be temporarily stored in the fire inlet pipe 10 for a long time, so that the fire source in the middle area can be gradually consumed in the fire inlet pipes 10, the scattered fire source can be weakened, and the flame retardant effect can be further enhanced.
Further, fire-retardant regional including four layers of back-fire relief layer 12, fixed mounting has fire board 11 between fire-retardant region and the guider, crosses fire board 11 and be the disc, crosses and has seted up the circular hole of multiunit on the fire board 11, thereby the burning things which may cause a fire disaster can enter into fire-retardant region through circular hole to further increase flame retardant efficiency.
Further, movable plates 22 are arranged on two sides of the four groups of fire retardant layers 12, the movable plates 22 are circular, the movable plates 22 are attached to the inner wall of the shell 1, the movable plates 22 on the two sides are connected through a buffer device, and the buffer device is arranged, so that impact force of air in the cavity in the flame retardant process can be buffered.
Furthermore, two corresponding inner wall grooves 17 are formed in the inner wall of the housing 1, sliding blocks 18 are fixedly mounted at positions, corresponding to the inner wall grooves 17, of the movable plates 22, the sliding blocks 18 are matched with the inner wall grooves 17, the sliding blocks 18 are movably clamped with the inner wall grooves 17, and the buffer device is arranged between the sliding blocks 18 on the movable plates 22 on the two sides.
Further, buffer includes pipe 19, inserted bar 20 and spring 21, and fixed mounting has inserted bar 20 on the slider 18 of both sides is close to one side wall each other, and pipe 19 cup joints on inserted bar 20, and spring 21 sets up the inside at pipe 19, and spring 21 sets up between the inserted bar 20 of both sides, when carrying out fire-retardant, and fly leaf 22 can be moved by the impact this moment, and spring 21 sets up the shrink this moment, accomplishes after fire-retardant, and spring 21 resets.
Further, install airflow pipe 13 on the connecting pipe 4 of right side, airflow pipe 13's top is provided with casing 14, installs rotation axis 15 through the moving part on the top inner wall of casing 14, and fixed mounting has flabellum 16 on the installation end of rotation axis 15, and after the air current passed through connecting pipe 4, the air current can follow airflow pipe 13 and enter into casing 14 to it is rotatory to drive flabellum 16, consequently can judge from this that the equipment is inside to have the air current to flow.
The working principle is as follows: in the in-service use, utilize connection pad 5 to be connected to the pipeline of both sides on, when catching fire in the pipeline of one of them side, the fire source can be obstructed by it through fire-retardant interval to accomplish the purpose of back-fire relief.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a flame arrester, includes shell (1), its characterized in that, the inside of shell (1) is provided with fire-retardant interval and constitutes, the both sides of shell (1) are provided with connecting block (3) respectively, and one side that connecting block (3) of both sides deviate from each other all is provided with connecting pipe (4), install connection pad (5) on connecting pipe (4).
2. A flame arrestor as defined in claim 1, wherein: the connecting device is characterized in that a connecting flange (2) is fixedly mounted on one side wall face of each connecting block (3) on two sides, the connecting flanges (2) are connected through a long bolt (7), a connecting ring (6) is fixedly mounted on the shell (1), and the connecting ring (6) is sleeved with the long bolt (7).
3. A flame arrestor as defined in claim 1, wherein: the connecting block (3) is conical, and the diameters of the inner walls of the connecting block (3) on two sides are gradually reduced from one side close to the shell (1) to one side far away from the shell (1).
4. A flame arrestor as defined in claim 1, wherein: and guide devices are respectively arranged on two sides of the flame-retardant section.
5. A flame arrestor as defined in claim 4, wherein: the guiding device comprises a mounting disc (8), a connecting disc (9) and fire inlet pipes (10), the fire inlet pipes (10) are fixedly connected with the inner wall of the shell (1), the fire inlet pipes (10) on two sides are mutually deviated from one side wall surface and are respectively provided with the fire inlet pipes (10) arranged at equal intervals, a plurality of groups of fire inlet pipes (10) are connected through the connecting disc (9), the fire inlet pipes (10) extend to the inside of the connecting block (3), and the lengths of the fire inlet pipes (10) are gradually lengthened from the side close to the inner wall of the connecting block (3) to the middle area.
6. A flame arrestor as defined in claim 1, wherein: the flame-retardant region comprises four flame-retardant layers (12), a fire plate (11) is fixedly mounted between the flame-retardant region and the guide device, the fire plate (11) is disc-shaped, and a plurality of groups of round holes are formed in the fire plate (11).
7. A flame arrestor as defined in claim 1, wherein: the two sides of the four fire retardant layers (12) are provided with movable plates (22), the movable plates (22) are circular, the movable plates (22) are attached to the inner wall of the shell (1), and the movable plates (22) on the two sides are connected through a buffer device.
8. A flame arrestor as defined in claim 7, wherein: two corresponding inner wall grooves (17) are formed in the inner wall of the shell (1), sliding blocks (18) are fixedly mounted on the positions, corresponding to the inner wall grooves (17), of the movable plates (22), the sliding blocks (18) are matched with the inner wall grooves (17), the sliding blocks (18) are movably clamped with the inner wall grooves (17), and the buffer device is arranged between the sliding blocks (18) on the movable plates (22) on the two sides.
9. A flame arrestor as defined in claim 8, wherein: buffer includes pipe (19), inserted bar (20) and spring (21), and fixed mounting has inserted bar (20) on the slider (18) of both sides one side wall face that is close to each other, pipe (19) cup joint on inserted bar (20), spring (21) set up in the inside of pipe (19), and spring (21) set up between the inserted bar (20) of both sides.
10. A flame arrestor as defined in claim 1, wherein: an airflow pipe (13) is installed on the connecting pipe (4) on the right side, a shell (14) is arranged on the top of the airflow pipe (13), a rotating shaft (15) is installed on the inner wall of the top of the shell (14) through a moving part, and fan blades (16) are fixedly installed on the installation end of the rotating shaft (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119110.0A CN115445122A (en) | 2022-09-15 | 2022-09-15 | Fire arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119110.0A CN115445122A (en) | 2022-09-15 | 2022-09-15 | Fire arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115445122A true CN115445122A (en) | 2022-12-09 |
Family
ID=84302998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211119110.0A Pending CN115445122A (en) | 2022-09-15 | 2022-09-15 | Fire arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115445122A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1033612A (en) * | 1962-02-13 | 1966-06-22 | United Gas Industries Ltd | Improvements in gas safety valves |
| WO2000056406A1 (en) * | 1999-03-24 | 2000-09-28 | A.G. Marvac Limited | Detonation flame arrester |
| US20160346575A1 (en) * | 2014-01-28 | 2016-12-01 | Elmac Technologies Limited | Flame arresters |
| CN108379761A (en) * | 2018-05-02 | 2018-08-10 | 抚顺华油能源设备厂 | Damp spark arrester |
| CN210219330U (en) * | 2019-08-05 | 2020-03-31 | 周敏 | Natural gas pipeline with flame arrester |
| CN111097118A (en) * | 2019-12-19 | 2020-05-05 | 山东双枭机电科技有限公司 | Flow dispersion type low-pressure-drop large-caliber flame arrester |
| CN211962867U (en) * | 2019-12-19 | 2020-11-20 | 柏克流体科技(徐州)有限公司 | Fire retardant disc capable of absorbing detonation shock waves |
| CN212389927U (en) * | 2020-05-29 | 2021-01-22 | 深圳市港华建设有限公司 | Natural gas pipeline with flame arrester |
| CN213100542U (en) * | 2020-06-01 | 2021-05-04 | 马军虎 | Pipeline explosion-proof reinforcing structure for chemical safety production |
| CN215461574U (en) * | 2021-08-26 | 2022-01-11 | 浙江振超石化设备有限公司 | Explosion-proof ripple spark arrester of storage tank |
| CN114569920A (en) * | 2022-03-25 | 2022-06-03 | 中化二建集团有限公司 | Oxygen pipeline flame arrester |
| CN216908973U (en) * | 2022-02-11 | 2022-07-08 | 湖北天信石化设备股份有限公司 | Fire arrestor with stable mounting structure |
-
2022
- 2022-09-15 CN CN202211119110.0A patent/CN115445122A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1033612A (en) * | 1962-02-13 | 1966-06-22 | United Gas Industries Ltd | Improvements in gas safety valves |
| WO2000056406A1 (en) * | 1999-03-24 | 2000-09-28 | A.G. Marvac Limited | Detonation flame arrester |
| US20160346575A1 (en) * | 2014-01-28 | 2016-12-01 | Elmac Technologies Limited | Flame arresters |
| CN108379761A (en) * | 2018-05-02 | 2018-08-10 | 抚顺华油能源设备厂 | Damp spark arrester |
| CN210219330U (en) * | 2019-08-05 | 2020-03-31 | 周敏 | Natural gas pipeline with flame arrester |
| CN111097118A (en) * | 2019-12-19 | 2020-05-05 | 山东双枭机电科技有限公司 | Flow dispersion type low-pressure-drop large-caliber flame arrester |
| CN211962867U (en) * | 2019-12-19 | 2020-11-20 | 柏克流体科技(徐州)有限公司 | Fire retardant disc capable of absorbing detonation shock waves |
| CN212389927U (en) * | 2020-05-29 | 2021-01-22 | 深圳市港华建设有限公司 | Natural gas pipeline with flame arrester |
| CN213100542U (en) * | 2020-06-01 | 2021-05-04 | 马军虎 | Pipeline explosion-proof reinforcing structure for chemical safety production |
| CN215461574U (en) * | 2021-08-26 | 2022-01-11 | 浙江振超石化设备有限公司 | Explosion-proof ripple spark arrester of storage tank |
| CN216908973U (en) * | 2022-02-11 | 2022-07-08 | 湖北天信石化设备股份有限公司 | Fire arrestor with stable mounting structure |
| CN114569920A (en) * | 2022-03-25 | 2022-06-03 | 中化二建集团有限公司 | Oxygen pipeline flame arrester |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221209 |
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| RJ01 | Rejection of invention patent application after publication |