CN110624190A - Efficient, rapid and reusable flameless pressure relief device - Google Patents
Efficient, rapid and reusable flameless pressure relief device Download PDFInfo
- Publication number
- CN110624190A CN110624190A CN201910986954.7A CN201910986954A CN110624190A CN 110624190 A CN110624190 A CN 110624190A CN 201910986954 A CN201910986954 A CN 201910986954A CN 110624190 A CN110624190 A CN 110624190A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- flame
- fire extinguishing
- edge
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004880 explosion Methods 0.000 claims abstract description 76
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 44
- 239000010935 stainless steel Substances 0.000 claims abstract description 44
- 238000013022 venting Methods 0.000 claims abstract description 39
- 239000010410 layer Substances 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000004049 embossing Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000002356 single layer Substances 0.000 claims abstract description 4
- 229920001967 Metal rubber Polymers 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 11
- 230000008676 import Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/04—Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the technical field of dust explosion pressure relief, and provides a high-efficiency, quick and reusable flameless pressure relief device. The device comprises a flame extinguishing shell, an explosion venting plate, a fire extinguishing element and a reinforcing rib grid for fixing; the flame extinguishing shell is provided with a flame inlet and a pressure outlet, and the side surface of the flame extinguishing shell is in a fan ring shape; the first edge of the explosion venting plate is hinged to the first edge of the flame inlet, and magnets are mounted on the other edges of the flame inlet; both sides of the explosion venting plate are provided with state monitors; the fire extinguishing element is arranged in the pressure outlet and is formed by overlapping and laying single-layer metal fire extinguishing nets layer by layer, the innermost layer and the outermost layer of metal fire extinguishing nets are both one layer of stainless steel embossing net, a plurality of groups of stainless steel screen meshes are arranged between the two layers of stainless steel embossing nets at intervals, and a group of stainless steel defoaming net is arranged between the two adjacent groups of stainless steel screen meshes. The invention can efficiently and rapidly release the explosion pressure and can be repeatedly used by utilizing the reusable explosion releasing plate, the precisely designed fire extinguishing element and the novel fire extinguishing cavity form.
Description
Technical Field
The invention relates to the technical field of dust explosion pressure relief, in particular to a high-efficiency, quick and reusable flameless pressure relief device.
Background
In recent years, with the development of industry and trade, the operation processes of powder-related enterprises are more and more, and the occurrence of dust explosion events is frequent. In order to reduce the harm caused by dust explosion as much as possible, explosion pressure relief measures are mostly adopted in the powder container, the dust remover and the pipeline, and when the powder container, the dust remover and the pipeline which need explosion pressure relief are arranged indoors, a flameless explosion pressure relief device becomes the first choice.
At present, most of the flameless explosion pressure relief devices in the market can not be reused, and the pressure relief efficiency is low, so that the flameless explosion pressure relief devices are high in price and low in efficiency and are not accepted by mass enterprises.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-efficiency, quick and reusable flameless pressure relief device, which can efficiently and quickly relieve explosion pressure and can be reused by utilizing a reusable explosion relief plate, a precisely designed fire extinguishing element and a novel fire extinguishing cavity form.
The technical scheme of the invention is as follows:
the utility model provides a high-efficient quick repeatedly usable's flameless pressure relief device which characterized in that: comprises a flame-extinguishing shell, an explosion-venting plate, a fire-extinguishing element and a reinforcing rib grid for fixing;
the flame extinguishing shell is provided with a flame inlet and a pressure outlet, and the side surface of the flame extinguishing shell is in a fan ring shape with a central angle of 90-120 degrees;
the explosion venting plate and the flame inlet are both quadrilateral, the first edge of the explosion venting plate is hinged to the first edge of the flame inlet through an explosion venting plate mounting shaft, magnets are mounted on the second edge, the third edge and the fourth edge of the flame inlet, and the second edge, the third edge and the fourth edge of the explosion venting plate are respectively in sealing fit with the second edge, the third edge and the fourth edge of the flame inlet through magnets; one side of the explosion venting plate, which is close to the flame inlet, is provided with an explosion venting plate reinforcing rib; both sides of the explosion venting plate are provided with state monitors, and each state monitor comprises a temperature sensor and a pressure sensor;
the fire extinguishing element is arranged in the pressure outlet, and the reinforcing rib grid for fixing is arranged on the outer side of the fire extinguishing element and is fixedly connected with the pressure outlet;
the fire extinguishing element is formed by overlapping and paving single-layer metal fire extinguishing net layers, and two adjacent layers of metal fire extinguishing nets are bound and fixed together through metal wires; the innermost layer of the metal fire extinguishing net and the outermost layer of the metal fire extinguishing net are both a layer of stainless steel embossing net; a plurality of groups of stainless steel screen meshes are arranged between the two layers of stainless steel embossing nets at intervals; a group of stainless steel defoaming nets are arranged between two adjacent groups of stainless steel screens;
the wire diameter of each layer of stainless steel embossing net is 2-3mm, and the aperture is 30-40 mm; each group of stainless steel screens comprises stainless steel screens with 15 meshes and 150 meshes or stainless steel screens with 20 meshes and 200 meshes which are distributed in a staggered mode; each group of stainless steel defoaming net comprises 5 layers of stainless steel defoaming nets; the fire extinguishing element comprises 6-10 groups of stainless steel defoaming nets.
Further, a metal rubber or magnetic spring 6 is arranged on the inner wall of the flame-out housing including the first side of the flame inlet.
Furthermore, an inspection window is arranged on the side wall of the flame extinguishing shell.
Furthermore, each layer of stainless steel embossing net is woven up and down in a warp and weft mode and is bent into a corrugated shape.
Further, the efficient, rapid and reusable flameless pressure relief device needs to be used under a negative pressure condition.
Further, let out the explosion board for closed condition under normal condition, open to articulated one side through magnetism adsorption end when explosion pressure release.
The invention has the beneficial effects that:
(1) the invention can rapidly extinguish the explosion flame in the container, the dust remover or the pipeline which is exploded, and simultaneously reduce the temperature of air flow and dust, thereby achieving the purpose of safe explosion venting;
(2) the flame extinguishing shell is arranged in a shell shape, so that explosion flame can be uniformly discharged through the fire extinguishing element, and the pressure relief efficiency is greatly improved;
(3) according to the invention, the metal rubber or the magnetic spring is distributed on the inner wall of one side of the hinged connection of the flame extinguishing shell and the explosion venting plate, so that the explosion venting plate is not strongly impacted with the side wall of the flame extinguishing shell due to huge explosion pressure waves, the flame extinguishing shell is intact and the explosion venting plate is not deformed, the explosion venting plate can be repeatedly used, a matched back pressure supporting device is not required to be installed for the explosion venting plate, the cost performance of the flameless pressure relief device is improved, and the safety, the reliability and the cost performance of indoor pressure relief are effectively improved;
(4) according to the invention, through the precisely designed fire extinguishing element, the flame generated by explosion can be effectively extinguished, and meanwhile, higher pressure relief efficiency is kept.
Drawings
FIG. 1 is an exploded view of the efficient, fast and reusable flameless pressure relief device of the present invention;
FIG. 2 is a perspective view of the efficient, rapid, and reusable flameless pressure relief device of the present invention;
FIG. 3 is an enlarged view of a portion of the efficient, rapid, reusable flameless pressure relief device of the present invention;
FIG. 4 is a schematic structural view of an explosion venting plate in the efficient, fast and reusable flameless pressure relief device of the present invention.
In the figure, 1-flame extinguishing shell, 2-explosion venting plate, 3-fire extinguishing element, 4-reinforcing rib grid for fixing, 5-inspection window, 6-magnetic spring, 7-explosion venting plate reinforcing rib, 8-explosion venting plate mounting shaft and 9-magnet mounting end face.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the efficient, rapid and reusable flameless pressure relief device comprises a flame extinguishing shell 1, an explosion relief plate 2, a fire extinguishing element 3 and a reinforcing rib grid 4 for fixing.
The flame extinguishing shell 1 is provided with a flame inlet and a pressure outlet, and the side surface of the flame extinguishing shell 1 is in a fan ring shape with a central angle of 90-120 degrees, so that the flame extinguishing shell 1 is in a shell shape. When the explosion takes place, explosion flame and pressure wave can let out 2 impacts of explosion board and open, let out explosion board 2 and pass through 6 shock attenuation of magnetic spring and adsorb fixedly, the explosion stretches along flame inlet, and explosion pressure mainly discharges through the pressure outlet just to flame inlet, that is to say, let out explosion board 2 and open the back completely, to explosion flame and pressure wave through flame extinction casing 1 basically belong to "zero influence", and the morphological design of 1 axisymmetric of flame extinction casing is favorable to the explosion to discharge more, because this design can make explosion flame release through fire extinguishing elements 3 uniformly, compare at present with the further improvement of angle flameless pressure relief device pressure release efficiency.
As shown in fig. 2 and 3, the explosion venting plate 2 and the flame inlet are both quadrilateral, the first edge of the explosion venting plate 2 is hinged to the first edge of the flame inlet through an explosion venting plate mounting shaft 8, magnets are mounted on the second edge, the third edge and the fourth edge of the flame inlet, and the second edge, the third edge and the fourth edge of the explosion venting plate 2 are respectively in sealing fit with the second edge, the third edge and the fourth edge of the flame inlet through magnets; one side of the explosion venting plate 2 close to the flame inlet is provided with an explosion venting plate reinforcing rib 7 shown in figure 4; and state monitors are arranged on two sides of the explosion venting plate 2 and comprise temperature sensors and pressure sensors. In this embodiment, high-efficient quick repeatedly usable's flameless pressure relief device need use under the negative pressure condition, under normal condition let out and explode board 2 for closed condition, open to articulated one side through magnetism absorption end when explosion pressure release. Particularly, on the one hand, under normal condition, let out three edges of exploding plate 2 non-hinged and the laminating of the magnet installation terminal surface 9 of flame import, and negative pressure state has also guaranteed well letting out the tight closure of exploding plate 2, let out when the explosion takes place exploding plate 2 by the pressure wave open to hinge the inside wall of flame-out casing 1 of one side open, the advantage of this design is when realizing explosion pressure release, let out exploding plate 2 to explosion flame and the zero influence of pressure wave. On the other hand, be provided with metal rubber or magnetic spring 6 on the inner wall of flame-out casing 1 including the first side of flame import for let out explode board 2 not have powerful striking because of huge explosion pressure wave and the lateral wall of flame-out casing 1, guaranteed simultaneously that flame-out casing 1's is intact and let out explode board 2 indeformable, realize its repeatedly usable's efficiency, improved no flame pressure relief device's price/performance ratio, effectively improved the security, the reliability and the price/performance ratio of indoor pressure release.
The fire extinguishing element 3 is arranged in the pressure outlet, and the reinforcing rib grid 4 for fixing is arranged on the outer side of the fire extinguishing element 3 and fixedly connected with the pressure outlet.
The fire extinguishing element 3 is formed by overlapping and paving single-layer metal fire extinguishing net layers, and two adjacent layers of metal fire extinguishing nets are bound and fixed together through metal wires; the innermost layer of the metal fire extinguishing net and the outermost layer of the metal fire extinguishing net are both a layer of stainless steel embossing net; a plurality of groups of stainless steel screen meshes are arranged between the two layers of stainless steel embossing nets at intervals; and a group of stainless steel defoaming nets are arranged between two adjacent groups of stainless steel screen meshes. The wire diameter of each layer of stainless steel embossing net is 2-3mm, and the aperture is 30-40 mm; each group of stainless steel screens comprises stainless steel screens with 15 meshes and 150 meshes or stainless steel screens with 20 meshes and 200 meshes which are distributed in a staggered mode; each group of stainless steel defoaming net comprises 5 layers of stainless steel defoaming nets; the fire extinguishing element 3 comprises 6-10 groups of stainless steel defoaming nets. Each layer of stainless steel embossing net is woven up and down in a warp and weft manner and is simultaneously bent into a corrugated shape. According to the invention, the fire extinguishing element 3 precisely related to the above can effectively extinguish flame generated by explosion and keep high pressure relief efficiency.
In this embodiment, the side wall of the flame extinguishing housing 1 is provided with an inspection window 5, so that the inside of the flame extinguishing housing 1 can be inspected.
Based on the arrangement, when the efficient, rapid and reusable flameless pressure relief device is arranged on a container, a dust remover or a pipeline which normally works under the condition of negative pressure, four edges of the explosion venting plate 2 are tightly attached to one side of the flame inlet of the flame extinguishing shell 1, and the explosion venting plate 2 cannot be opened due to double guarantee of negative pressure and magnet adsorption; when exploding in container, dust remover or the pipeline, let out three edges by magnet absorption of exploding board 2 and break away from the flame import face to let out exploding board installation axle 8 along flame import one side and overturn fast, let out and explode board 2 and can open the upset rapidly to the inner wall of flame-out casing 1 one side under the impact of pressure wave, at this moment, can avoid the two direct impact, the deformation with letting out metal rubber or magnetic spring 6 on exploding board 2 laminating one side inner wall, guaranteed no flame pressure relief device's reusability. Because the fire extinguishing elements 3 are symmetrically distributed with the central axis of the flame inlet, the flame can be ensured to be unimpeded and uniformly distributed in the flame extinguishing shell 1, the fire extinguishing elements 3 can be fully utilized, and the pressure relief efficiency is obviously improved.
The efficient, rapid and reusable flameless pressure relief device has the obvious advantages of further improving the pressure relief efficiency and being reusable, can efficiently collect dust, rapidly quench flame and absorb the temperature of flame, can ensure that secondary explosion is not caused by releasing higher pressure and temperature around the flameless pressure relief device during indoor pressure relief, and ensures the safety of peripheral processes and equipment.
It is to be understood that the above-described embodiments are only a few embodiments of the present invention, and not all embodiments. The above examples are only for explaining the present invention and do not constitute a limitation to the scope of protection of the present invention. All other embodiments, which can be derived by those skilled in the art from the above-described embodiments without any creative effort, namely all modifications, equivalents, improvements and the like made within the spirit and principle of the present application, fall within the protection scope of the present invention claimed.
Claims (6)
1. The utility model provides a high-efficient quick repeatedly usable's flameless pressure relief device which characterized in that: comprises a flame extinguishing shell (1), an explosion venting plate (2), a fire extinguishing element (3) and a reinforcing rib grid (4) for fixing;
the flame extinguishing shell (1) is provided with a flame inlet and a pressure outlet, and the side surface of the flame extinguishing shell (1) is in a fan ring shape with a central angle of 90-120 degrees;
the explosion venting plate (2) and the flame inlet are both quadrilateral, the first edge of the explosion venting plate (2) is hinged to the first edge of the flame inlet through an explosion venting plate mounting shaft (8), magnets are mounted on the second edge, the third edge and the fourth edge of the flame inlet, and the second edge, the third edge and the fourth edge of the explosion venting plate (2) are respectively in sealing fit with the second edge, the third edge and the fourth edge of the flame inlet through the magnets; one side of the explosion venting plate (2) close to the flame inlet is provided with an explosion venting plate reinforcing rib (7); both sides of the explosion venting plate (2) are provided with state monitors, and each state monitor comprises a temperature sensor and a pressure sensor;
the fire extinguishing element (3) is arranged in the pressure outlet, and the reinforcing rib grid (4) for fixing is arranged on the outer side of the fire extinguishing element (3) and is fixedly connected with the pressure outlet;
the fire extinguishing element (3) is formed by overlapping and laying single-layer metal fire extinguishing nets, and two adjacent layers of metal fire extinguishing nets are bound and fixed together through metal wires; the innermost layer of the metal fire extinguishing net and the outermost layer of the metal fire extinguishing net are both a layer of stainless steel embossing net; a plurality of groups of stainless steel screen meshes are arranged between the two layers of stainless steel embossing nets at intervals; a group of stainless steel defoaming nets are arranged between two adjacent groups of stainless steel screens;
the wire diameter of each layer of stainless steel embossing net is 2-3mm, and the aperture is 30-40 mm; each group of stainless steel screens comprises stainless steel screens with 15 meshes and 150 meshes or stainless steel screens with 20 meshes and 200 meshes which are distributed in a staggered mode; each group of stainless steel defoaming net comprises 5 layers of stainless steel defoaming nets; the fire extinguishing element (3) comprises 6-10 groups of stainless steel defoaming nets.
2. A high efficiency fast reusable flameless pressure relief device according to claim 1, wherein the inner wall of the flame out housing (1) including the first side of the flame inlet is provided with a metal rubber or magnetic spring (6).
3. The efficient fast reusable flameless pressure relief device according to claim 1, wherein an inspection window (5) is opened on a side wall of the flame extinguishing housing (1).
4. A high efficiency, rapid, reusable flameless pressure relief device according to claim 1 wherein each layer of stainless steel embossed mesh is woven warp and weft up and down while being bent in a corrugated shape.
5. The efficient fast reusable flameless pressure relief device according to claim 1, wherein said efficient fast reusable flameless pressure relief device is required to be used under negative pressure conditions.
6. A high efficiency fast reusable flameless pressure relief device according to claim 1, wherein said explosion venting plate (2) is closed in normal condition, and is opened to the hinged side by magnetic attraction end during explosion pressure relief.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986954.7A CN110624190A (en) | 2019-10-17 | 2019-10-17 | Efficient, rapid and reusable flameless pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986954.7A CN110624190A (en) | 2019-10-17 | 2019-10-17 | Efficient, rapid and reusable flameless pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110624190A true CN110624190A (en) | 2019-12-31 |
Family
ID=68976672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910986954.7A Pending CN110624190A (en) | 2019-10-17 | 2019-10-17 | Efficient, rapid and reusable flameless pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110624190A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062457A (en) * | 2013-01-04 | 2013-04-24 | 于波涛 | Gate type explosion-proof valve |
| CN203335956U (en) * | 2013-07-02 | 2013-12-11 | 艾默生网络能源有限公司 | Equipment cabinet pressure relief device and equipment cabinet |
| CN208074226U (en) * | 2018-04-02 | 2018-11-09 | 江苏中吴环境工程有限公司 | Reusable safe explosion relief door |
| CN108930825A (en) * | 2018-08-01 | 2018-12-04 | 东北大学 | Without flame pressure relief device |
| US20180369626A1 (en) * | 2015-12-14 | 2018-12-27 | Bs&B Innovations Limited | Flameless venting system |
| CN110193979A (en) * | 2019-06-17 | 2019-09-03 | 汇乐因斯福环保安全研究院（苏州）有限公司 | A kind of fire extinguishing element for no flame explosion pressure relief device |
| CN210963639U (en) * | 2019-10-17 | 2020-07-10 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Efficient, rapid and reusable flameless pressure relief device |
-
2019
- 2019-10-17 CN CN201910986954.7A patent/CN110624190A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062457A (en) * | 2013-01-04 | 2013-04-24 | 于波涛 | Gate type explosion-proof valve |
| CN203335956U (en) * | 2013-07-02 | 2013-12-11 | 艾默生网络能源有限公司 | Equipment cabinet pressure relief device and equipment cabinet |
| US20180369626A1 (en) * | 2015-12-14 | 2018-12-27 | Bs&B Innovations Limited | Flameless venting system |
| CN208074226U (en) * | 2018-04-02 | 2018-11-09 | 江苏中吴环境工程有限公司 | Reusable safe explosion relief door |
| CN108930825A (en) * | 2018-08-01 | 2018-12-04 | 东北大学 | Without flame pressure relief device |
| CN110193979A (en) * | 2019-06-17 | 2019-09-03 | 汇乐因斯福环保安全研究院（苏州）有限公司 | A kind of fire extinguishing element for no flame explosion pressure relief device |
| CN210963639U (en) * | 2019-10-17 | 2020-07-10 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Efficient, rapid and reusable flameless pressure relief device |
Non-Patent Citations (2)
| Title |
|---|
| 葛绪君等: "家具设计材料与工艺", 31 July 2009, 东北林业大学出版社, pages: 99 * |
| 解立峰等: "防火与防爆工程", 30 April 2010, 冶金工业出版社, pages: 234 - 235 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100928079B1 (en) | Maze type relief valve with flame arrester for a crankcase | |
| CN210963639U (en) | Efficient, rapid and reusable flameless pressure relief device | |
| CN103311872A (en) | Air bag type protection box for cable joint | |
| CN108379760A (en) | A kind of nonflame bleeder of cylinder-like structure | |
| CN110624190A (en) | Efficient, rapid and reusable flameless pressure relief device | |
| CN213039894U (en) | Circular flameless discharge device capable of being repeatedly used | |
| CN210228942U (en) | Flameless flame arrester | |
| CN102940943A (en) | Wave-absorption vibration-reduction silk screen fire-resistance explosion-suppression apparatus | |
| CN209576203U (en) | A kind of chemical defence special filtering absorber | |
| CN211117838U (en) | Explosion-proof valve device with pressure release protection structure | |
| CN110566924A (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| CN219128102U (en) | Flame arrester for natural gas pipeline | |
| CN207554898U (en) | A kind of high-performance sector nonflame explosion venting device | |
| CN208927484U (en) | A kind of nonflame bleeder of square high efficiency | |
| CN204571725U (en) | A kind of explosion release window of non-active explosion | |
| CN114569920B (en) | Oxygen pipeline flame arrester | |
| CN210423869U (en) | One-way explosion-proof valve | |
| CN102954262A (en) | Deflagration overpressure relief device with wave adsorption and flame suppression functions | |
| CN210831914U (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| CN213900010U (en) | Pipeline explosion venting device for removing ash by explosion-proof pressure difference | |
| WO2015106693A1 (en) | Aluminium electrolytic capacitor | |
| CN110193979B (en) | Fire extinguishing element for flameless explosion pressure relief device | |
| CN209810882U (en) | Negative pressure explosion-proof air pipe | |
| CN214466382U (en) | Dust flameless discharge device convenient to install | |
| CN108331939B (en) | Driving pipe pressure type explosion-proof valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |