CN2094526U - Explosion-proof fire-retardant ventilation cover - Google Patents
Explosion-proof fire-retardant ventilation cover Download PDFInfo
- Publication number
- CN2094526U CN2094526U CN 90202184 CN90202184U CN2094526U CN 2094526 U CN2094526 U CN 2094526U CN 90202184 CN90202184 CN 90202184 CN 90202184 U CN90202184 U CN 90202184U CN 2094526 U CN2094526 U CN 2094526U
- Authority
- CN
- China
- Prior art keywords
- fire
- fire relief
- explosion
- relief element
- retardant
- 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.)
- Expired - Lifetime
Links
- 239000003063 flame retardant Substances 0.000 title claims description 27
- 238000009423 ventilation Methods 0.000 title description 10
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 238000004880 explosion Methods 0.000 claims description 40
- 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 description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910000498 pewter Inorganic materials 0.000 claims description 2
- 239000010957 pewter Substances 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 239000003208 petroleum Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model provides an explosion-proof back-fire relief cover of ventilating, by explosion-proof cover, back-fire relief component and back-fire relief component casing etc. constitute, back-fire relief component is stainless steel ripple back-fire relief layer, and the back-fire relief performance accords with the requirement of national standard GB5908 regulation, and explosion-proof cover is fixed on back-fire relief component center pin by fusible center bolt to even be as an organic whole with back-fire relief component casing, and fusible center bolt melts when catching fire, and explosion-proof cover is opened by the elasticity of spring is automatic, makes the uncovered burning of flame on back-fire relief layer, thereby guarantees equipment safety. The device is widely suitable for being installed on the ventilating pipe orifices and the combustible gas exhaust pipe orifices of various combustible and combustible liquid storage tanks such as oil tanks and oil tank cars of gas stations.
Description
The utility model belong to store inflammable and the Storage Tanks Combustible Liquid ventilation mouth of pipe on and the fire safety equipment on the fire gases exhaust pipe mouth.
The anti-explosion fire-retardant vent hood is installed on the ventilation mouth of pipe that stores inflammable and Storage Tanks Combustible Liquid and on the fire gases exhaust pipe mouth, when running into spark that thunderbolt spark or external firing causes or flame, can stop this burning things which may cause a fire disaster to be scurried into and cause fire in the storage tank; Simultaneously, when on flame retardant bed, forming burned flame, anti-explosion cover tripping automatically, the uncovered burning of flame, and can not cause backfire to be burnt, thereby prevent storage tank blast, thereby be indispensable safety apparatus on the various inflammable or Storage Tanks Combustible Liquid ventilation mouths of pipe such as petrol service station oil tank, tank truck and on the fire gases exhaust pipe mouth in the petrochemical enterprise.
On the ventilation mouth of pipe of various inflammable or Storage Tanks Combustible Liquid such as existing petrol service station oil tank, tank truck and on the fire gases exhaust pipe mouth, mostly adopt metal gauze type flame trap, flame retardant bed is by 12～14 layers, 16～22 purpose copper mesh are formed, the requirement of out of reach standard GB 5908 " flame arrester for petroleum tank back-fire relief performance and test method " regulation, more do not have can self-opening anti-explosion cover.The employing fill-type porous type flame trap that abroad has is directly installed on the ventilation mouth of pipe, fixing rainproof, dust boot is arranged and do not have the anti-explosion cover of self-opening, can not reach the purpose of safe handling, because when forming combustion flame above the back-fire relief element, flame is subjected to fixing obstruction rainproof, dust boot, can not form uncovered burning, force the flame back-fire relief element that flashes back, the back-fire relief component temperature is risen, when temperature reaches the oil gas burning-point, the danger that causes the oil tank blast is just arranged.
The Chinese patent 87204838 that the court has been authorized " novel ripple flame arrester for petroleum tank " mainly is applicable on the petroleum storage tank and the supporting use of breathing valve, and the anti-explosion fire-retardant vent hood mainly is applicable on the ventilation mouth of pipe that is contained in inflammable or Storage Tanks Combustible Liquid such as petrol service station oil tank, tank truck and on the fire gases exhaust pipe mouth, the two is the purposes difference not only, and the difference of essence is structurally arranged.
The purpose of this utility model is to design a kind of back-fire relief element that the back-fire relief performance reaches GB GB5908 requirement that both had, the anti-explosion fire-retardant vent hood that has explosion-proof performance again, make it to be installed on the ventilation mouth of pipe of inflammable or Storage Tanks Combustible Liquid such as petrol service station oil tank, tank truck and on the fire gases exhaust pipe mouth, can guarantee fire safety.
For achieving the above object, the utility model anti-explosion fire-retardant vent hood is made up of anti-explosion cover, back-fire relief element and back-fire relief element housings, the back-fire relief element adopts 2～3 layers of ripple flame retardant bed that corrosion-resistant steel is made, its ripple is that height is 1.3～1.8 millimeters a triangle, and interstitial surface area accounts for more than 80% of flame retardant bed payload space; The back-fire relief element places on the groove on back-fire relief element housings top, utilizes meltable center bolt, the upper and lower center shaft of back-fire relief element and fly nut to be connected and fixed between back-fire relief element and the anti-explosion cover; Then fuse between anti-explosion cover and the back-fire relief element housings by balance spring, spring center axle and pin.
Advantage of the present utility model is, owing to adopted above-mentioned back-fire relief element and anti-explosion cover, not only the back-fire relief performance reaches the requirement of GB GB5908 regulation, and in case when on flame retardant bed, forming burned flame, anti-explosion cover tripping automatically, thus guarantee the oil tank fire safety.Simultaneously, because the utility model back-fire relief element housings is a cast aluminium alloy, anti-explosion cover is by aluminium sheet compression moulding, and not only in light weight, volume is little, and can play rainproof, antisoiling effect.Owing to adopt said structure, check, clean or displacement back-fire relief element more convenient, thereby the utility model can be widely used on the ventilation mouth of pipe of various inflammable or Storage Tanks Combustible Liquid in the petrochemical enterprises such as petrol service station oil tank, tank truck and on the fire gases exhaust pipe mouth.
Below in conjunction with drawings and Examples the utility model is done further detailed description.
Fig. 1 is an anti-explosion fire-retardant vent hood constructional drawing;
Fig. 2 is a back-fire relief element housings constructional drawing;
Fig. 3 is the anti-explosion cover constructional drawing;
Fig. 4 is meltable center bolt constructional drawing;
Fig. 5 is center spindle structure figure on the back-fire relief element;
Fig. 6 is center spindle structure figure under the back-fire relief element;
Fig. 7 is counter spring structure figure.
The structure of this anti-explosion fire-retardant vent hood such as Fig. 1, form by anti-explosion cover (4), back-fire relief element (6) and back-fire relief element housings (8), back-fire relief element (6) is the ripple flame retardant bed that 2～3 layers of stainless steel band are made, every layer 17 millimeters thick, separate with corrosion-resistant steel spacer ring (12) between the flame retardant bed, its ripple is that height is 1.3～1.8 millimeters a triangle, and interstitial surface area accounts for more than 80% of flame retardant bed payload space.Back-fire relief element housings (8) is a cast aluminium alloy, its structure such as Fig. 2.Back-fire relief element (6) places on the groove on back-fire relief element housings (8) top, compresses with the gland (7) of being with screw thread, with vibration proof; Gland (7) is unloaded, can easily flame retardant bed be taken out, clean or replace.Anti-explosion cover (4) is by aluminium sheet compression moulding, its structure such as Fig. 3, utilizing meltable center bolt (2), the upper and lower center shaft of back-fire relief element (3) and (5) and fly nut (1) to be connected and fixed between back-fire relief element (6) and the anti-explosion cover (4) is integral, meltable center bolt (2) is by rigid PVC chromium plating film, or hard lead, or Roman pewter is made its structure such as Fig. 4; The structure of the upper and lower center shaft of back-fire relief element (3) and (5) such as Fig. 5 and Fig. 6.As Fig. 2, back-fire relief element housings (8) has two carriages to connect balance spring, passes through balance spring (10) between anti-explosion cover (4) and the back-fire relief element housings (8), spring center axle (9), pin (13) fuses, balance spring is made by corrosion-resistant steel, its structure such as Fig. 7.The meltable bolt of anti-explosion cover under the normal circumstances makes balance spring (10) be in strained condition, and meltable center bolt fusion temperature is not higher than 120 ℃, generally fusing in 2～3 minutes after being subjected to flame interaction, after meltable center bolt fusing, anti-explosion cover spring-loaded, self-opening.
Experimental prototype to this anti-explosion fire-retardant vent hood has carried out the back-fire relief performance test, and test results shows: with the continuous explosion arrestment of this anti-explosion fire-retardant vent hood 13 times, at every turn can both back-fire relief, and the explosion arrestment performance is qualified; In the flashback performance test, can stand anti-burning test no tempering in a hour, flashback performance is qualified; Through water test, the flame trap housing can bear and be not less than 0.9Mpa hydraulic pressure no leak, flawless and permanent deformation; Anti-explosion cover is through flame assay, and the anti-explosion cover self-opening reaches safety requirements within 2.5 minutes, and flexibility and reliability.
Claims (7)
1, a kind of anti-explosion fire-retardant vent hood, form by anti-explosion cover (4), back-fire relief element (6) and back-fire relief element housings (8), it is characterized in that back-fire relief element (6) is the ripple flame retardant bed that 2～3 layers of corrosion-resistant steel are made, its ripple is that height is 1.3～1.8 millimeters a triangle, and interstitial surface area accounts for more than 80% of flame retardant bed payload space; Back-fire relief element (6) places on the groove on back-fire relief element housings (8) top, utilizes meltable center bolt (2), the upper and lower center shaft of back-fire relief element (3) and (5) and fly nut (1) to be connected and fixed between back-fire relief element (6) and the anti-explosion cover (4); Then fuse between anti-explosion cover (4) and the back-fire relief element housings (8) by balance spring (10), spring center axle (9), pin (13).
2, anti-explosion fire-retardant vent hood according to claim 1 is characterized in that back-fire relief element housings (8) is cast aluminium alloy.
3, anti-explosion fire-retardant vent hood according to claim 1 and 2 is characterized in that back-fire relief element housings (8) has two carriages.
4, anti-explosion fire-retardant vent hood according to claim 1 is characterized in that back-fire relief element (6) compresses with the gland (7) of band screw thread.
5, anti-explosion fire-retardant vent hood according to claim 1 is characterized in that meltable center bolt (2) by rigid PVC chromium plating film, or hard lead, or Roman pewter is made.
6, anti-explosion fire-retardant vent hood according to claim 1 is characterized in that the anti-explosion cover (4) by aluminium sheet compression moulding.
7, anti-explosion fire-retardant vent hood according to claim 1 is characterized in that balance spring (10) makes for corrosion-resistant steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202184 CN2094526U (en) | 1990-03-02 | 1990-03-02 | Explosion-proof fire-retardant ventilation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90202184 CN2094526U (en) | 1990-03-02 | 1990-03-02 | Explosion-proof fire-retardant ventilation cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2094526U true CN2094526U (en) | 1992-01-29 |
Family
ID=4883639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90202184 Expired - Lifetime CN2094526U (en) | 1990-03-02 | 1990-03-02 | Explosion-proof fire-retardant ventilation cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2094526U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501959A (en) * | 2011-09-28 | 2012-06-20 | 张晓荣 | Fireproof air vent head for oil hold |
| CN103538822A (en) * | 2012-07-10 | 2014-01-29 | 成都科盛石油科技有限公司 | Ventilation cap with fire retardance function |
| CN104841076A (en) * | 2015-06-02 | 2015-08-19 | 精凯(天津)阀门制造有限公司 | Pipe end flame arrester |
| CN106523115A (en) * | 2016-12-16 | 2017-03-22 | 沪东中华造船(集团)有限公司 | Explosion-proof device for ship fuel-gas diesel engine exhaust pipe |
| CN112618998A (en) * | 2020-12-29 | 2021-04-09 | 江苏复森特种阀门有限公司 | Pipe end type burning-resistant fire damper |
-
1990
- 1990-03-02 CN CN 90202184 patent/CN2094526U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501959A (en) * | 2011-09-28 | 2012-06-20 | 张晓荣 | Fireproof air vent head for oil hold |
| CN103538822A (en) * | 2012-07-10 | 2014-01-29 | 成都科盛石油科技有限公司 | Ventilation cap with fire retardance function |
| CN104841076A (en) * | 2015-06-02 | 2015-08-19 | 精凯(天津)阀门制造有限公司 | Pipe end flame arrester |
| CN106523115A (en) * | 2016-12-16 | 2017-03-22 | 沪东中华造船(集团)有限公司 | Explosion-proof device for ship fuel-gas diesel engine exhaust pipe |
| CN112618998A (en) * | 2020-12-29 | 2021-04-09 | 江苏复森特种阀门有限公司 | Pipe end type burning-resistant fire damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |