CN201980610U - Seal ring ventilation and explosion suppression device of floating-roof oil tank - Google Patents
Seal ring ventilation and explosion suppression device of floating-roof oil tank Download PDFInfo
- Publication number
- CN201980610U CN201980610U CN2011200623555U CN201120062355U CN201980610U CN 201980610 U CN201980610 U CN 201980610U CN 2011200623555 U CN2011200623555 U CN 2011200623555U CN 201120062355 U CN201120062355 U CN 201120062355U CN 201980610 U CN201980610 U CN 201980610U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- gas distribution
- suppression device
- distribution pipe
- floating
- 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
Images
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A seal ring ventilation and explosion suppression device of a floating-roof oil tank comprises an air supply branch pipe which is communicated with the floating-roof oil tank and externally connected with an air transmission header pipe, an annular seal ring is arranged between the tank wall of the oil tank and the side wall of the floating roof, and the annular seal ring comprises primary and secondary seal elements. The seal ring ventilation and explosion suppression device is characterized in that the device also comprises a central distributor, a plurality of radial branch pipes and a plurality of arc-shaped air distribution pipes, wherein the central distributor is arranged at the central position above a top plate of the floating roof and communicated with the air supply branch pipe; the plurality of radial branch pipes are arranged between the central distributor and the seal ring and communicated with the central distributor; the plurality of arc-shaped air distribution pipes are arranged in the seal ring or a margin floating chamber and communicated with the radial branch pipes; a plurality of exhaust holes or jet heads used for transmitting air to the seal ring are arranged on the arc-shaped air distribution pipes; and a clearance for tail gas exhaust is arranged between the tank wall and the top end of the seal ring. The whole set of system has simple structure and low cost and is convenient to use and maintain; and the system is a simple, economical and reasonable ideal process approach to effectively realize the intrinsic safety of the oil tank.
Description
Technical field
The utility model relates to a kind of explosion protection of crude oil storage tank, especially a kind of seal ring ventilation explosion suppression device of floater.
Background technology
Along with crude oil storage tank maximizes, the fast development of clustered trend, the oil tank explosion-proof security issues becomes increasingly conspicuous.Floater particularly, owing to be subjected to the influence of its hermetically-sealed construction, assembling inevitably in the grommet type seals that forms between first and second sealing member and tank skin, floating side wall has fire gases and AIR MIXTURES (to see Fig. 1, blast area), meet very easily presence of fire blast such as thunderbolt, electrostatic spark, be the district occurred frequently of tank fire accident, such proportion that accounts for whole oil tank accident is up to 72.8%.
Ignition source, seal cavity and the combustible gas that reaches explosive limits are the three elements of initiation fire blast, as long as get rid of wherein each, fire explosion can be avoided.The generation of seal ring (confined space) can't be eliminated because of being subjected to the restriction of tank structure; Though ignition source is the guard key object, human element also can be controlled by science, strict management, under existing cognitive level and hardware technology condition, the strick precaution of being struck by lightning is not still had in addition ACTIVE CONTROL of stable, failure-free software and hardware means.
Crude oil belongs to the inflammable and explosive chemical of B-grade in the first class's class, the easy and air formation explosive mixture of its steam, Explosive Range 1.1 (V%)～8.7 (V%).Existing oil tank hermetically-sealed construction can not be stopped crude oil volatilization, oil gas disperse, can not effectively stop the air that causes because of temperature Change to be scurried into again, thereby mixed oil and gas very easily is within the explosive limits scope in the seal ring.
The existing patent No. is 200920319185.7 Chinese patent " a kind of oil plant bank inerting protective device of essential safety ", comprise the breathing webmaster that is communicated with oil tank, and electrical control gear, shock absorber, safety valve, the controlled shock absorber that is connected with of described breathing pipe network, be provided with controlled forward channel between shock absorber and the breathing pipe network, shock absorber and breathing pipe are separately installed with first pressure transformer on the net, second pressure transformer, online oxygen analyser, first pressure transformer, second pressure transformer, online oxygen analyser is electrically connected with electrical control gear respectively, safety valve is installed on the shock absorber, is separately installed with on the described oil tank and the discharge line valve of breathing pipe network bonded assembly air inlet shutoff valve and communicating with atmosphere; Gas oxygen concentration in the described oil tank detects by portable oxygen analyser.It is by breathing pipe network oil tank to be charged into the purpose that unreactable gas has reached protection, and still, it carries out whole oil tank, is not to carry out at the oil tank seal ring specially, and the area of protection greatly, complex structure and cost be higher.The utility model is by process means bubbling air or unreactable gas in seal ring, can utilize on the one hand air directly, the powerful oil gas of driving away effectively, make combustible gas deviation of concentration Explosive Range; Also can utilize indifferent gas to be full of whole seal ring and to keep pressure-fired on the other hand,, make seal ring become the inertia insulation strip by the fire hazard space with entering of effective prevention air; Simultaneously, multi-functional static conducting device being set effectively takes precautions against electrostatic accumulation, eliminates electrostatic spark.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of simple in structure, with low cost, working service seal ring ventilation explosion suppression device of floater easily is provided at the above-mentioned state of the art, can make device have fire prevention, explosion-proof and fire-extinguishing function concurrently by to carrying unreactable gas or foamite in the seal ring.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of seal ring ventilation explosion suppression device of floater, the air feed arm that comprises the female pipe of external gas transmission that communicates with floater, the grommet type seals that between the tank skin of oil tank and floating top-side panel, forms, described grommet type seals comprises once, secondary seal spare, it is characterized in that described seal ring ventilation explosion suppression device also comprises:
One central distributor is located at the center of floating top board top, top, is connected with the air feed arm;
Some radially bronchuses are located between central distributor and the seal ring, are connected with central distributor;
Some arc gas distribution pipes, be arranged in the seal ring or the edge buoyancy module in, be connected with bronchus radially, and on the arc gas distribution pipe, be provided with a plurality of deflation hole or jet thrusts that are used in seal ring delivering gas or foamite;
The gap that the top of described tank skin and seal ring exists tail gas to discharge.
As improvement, described radially bronchus is radial symmetrical distribution around the central distributor, and the linear spacing perforate of described arc gas distribution pipe is star-like with bronchus radially and is connected.
As improvement, when described arc gas distribution pipe placed in the seal ring, described jet thrust was installed in the outside of arc gas distribution pipe, perhaps directly offers deflation hole in the outside of arc gas distribution pipe; When described arc gas distribution pipe placed in the edge buoyancy module, described jet thrust was installed on the through hole that floating top-side panel offers to refute mutually with the arc gas distribution pipe and connects.
Improve, described deflation hole or jet thrust are evenly distributed again, and between the once sealing spare and secondary seal spare of seal ring.
Further improve, the once sealing spare of described seal ring is a soft seal; Described secondary seal spare is the secondary seal barrier film, is located at the top of a soft seal, is provided with stay bearing plate above secondary seal spare, is provided with the secondary seal rubber flap in the upper end of stay bearing plate and cooperates with tank skin.
Further improve, described secondary seal rubber flap is provided with static and leads except that plate.
Further improve, described central distributor is connected with the air feed arm by scalable flexible pipe.
At last, described arc gas distribution pipe is electrically connected by several multi-functional static conducting devices and floating jacking row, guarantees between the every pipeline section, equipotential between arc gas distribution pipe and the floating top; Simultaneously, the fixed support of multi-functional static conducting device double as arc gas distribution pipe installation.
Compared with prior art, advantage of the present utility model is: the upper surface at floater is set up central distributor, radial radially bronchus is set on central distributor, be connected with the arc gas distribution pipe by bronchus radially again, by the air feed arm with gas from central distributor, radially bronchus, arc gas distribution pipe are transported in the seal ring, thereby reach the purpose of driving away oil gas in the seal ring, make the fire gases in the seal ring depart from Explosive Range; Simultaneously, the arc gas distribution pipe is taked linear spacing perforate, realizes each section equilibrium, discharges gas continuously, guarantees gas phase homogenization in the seal ring, realizes essential safety, clears away datonation-inhibition, fire extinguishing blind area; The utility model makes every effort to dissolve from the source oil tank seal ring fire safety evaluating hidden danger, can be according to actual conditions, in seal ring, carry air, unreactable gas or foamite, have and initiatively reduce gas concentration in the oil tank seal ring, the function that suppresses blast, have concurrently simultaneously and put out the go out expansion potentiality of calamity of oil tank initial stage, and simple in structure, with low cost, working service convenient, be brief, economical, rationally, effectively realize the desirable technology approach of oil tank essential safety.
Description of drawings
Fig. 1 is the pipe line arrangement figure of floater of the present utility model;
Fig. 2 is the section drawing that the arc gas distribution pipe is installed in the seal ring of the present utility model;
Fig. 3 is the section drawing that the arc gas distribution pipe is installed in the edge of the present utility model buoyancy module;
Fig. 4 is an air flow direction scheme drawing of the present utility model;
Fig. 5 is the constructional drawing of multi-functional static conducting device.
The specific embodiment
Below in conjunction with the accompanying drawing example the utility model is described in further detail.
As shown in the figure, a kind of seal ring ventilation explosion suppression device of floater, the air feed arm 4 that comprises the female pipe of external gas transmission that communicates with floater 1, described floater 1 comprises tank skin 11 and the edge buoyancy module 15 that is formed by floating top top board 12, floating top-side panel 14, floating roof and floor 13, between the tank skin 11 of oil tank 1 and floating top-side panel 14, form grommet type seals 8, described grommet type seals 8 comprises once, secondary seal spare 81,82, and the once sealing spare 81 of described seal ring 8 is a soft seal; Described secondary seal spare 82 is the secondary seal barrier film, be located at the top of once sealing spare 81, above secondary seal spare 82, be provided with stay bearing plate 83, be provided with secondary seal rubber flap 84 cooperates with tank skin 11 in the upper end of stay bearing plate 83, and on described secondary seal rubber flap 84, be provided with static and lead, the gap 86 that has tail gas to discharge between described tank skin 11 and the secondary seal rubber flap 84 except that plate 85; Center above floating top top board 12 is provided with a central distributor 2, is connected with air feed arm 4 by a bellows 5; Around central distributor 2, offer through hole symmetrically and evenly, connect some radially bronchuses 3 respectively, described radially bronchus 3 is radial symmetrical distribution around central distributor 2, the outer end of described radially bronchus 3 is connected with arc gas distribution pipe 7, described arc gas distribution pipe 7 can place in the seal ring 8 and also can place in the edge buoyancy module 15, the 7 linear spacing perforates of arc gas distribution pipe, be star-like with bronchus 3 radially and be connected, on the arc gas distribution pipe, be provided with a plurality of deflation hole or jet thrusts that are used for delivering gas in seal ring;
When described arc gas distribution pipe 7 placed in the seal ring 8, as described in Figure 2, described jet thrust was installed in the outside of arc gas distribution pipe 7, perhaps directly offered deflation hole 9 ' in the outside of arc gas distribution pipe 7; When described arc gas distribution pipe 7 placed in the edge buoyancy module 15, as shown in Figure 3, described jet thrust 9 was installed on the through hole that floating top-side panel 14 offers to refute mutually with arc gas distribution pipe 7 and connects; Described deflation hole 9 ' or jet thrust 9 are evenly distributed, and between the once sealing spare 81 and secondary seal spare 82 of seal ring 8, so that gas evenly is transported to the inner chamber of seal ring 8, drive away the oil gas in the seal ring 8, seal ring 8 explosive gas atmospheres are forced to be converted into " 2 district " by " 0/1 district ", realize essential safety, the intensified safety accumulating; Further improve, arc gas distribution pipe 7 is electrically connected with floating jacking row by several multi-functional static conducting devices 100, fixation clip 101 cross sections of multi-functional static conducting device 100 are circular arc, once sealing spare 81 end faces are provided with fixed metal plate accordingly, be responsible for being fixed once sealing spare, the fixation clip 101 of multi-functional static conducting device 100 is pressed on arc gas distribution pipe 7 on the fixed metal plate again, thereby fix arc gas distribution pipe 7, the a plurality of connection terminals of welding on the arc gas distribution pipe 7, or with anchor ear hold tightly lead behind the static line with multi-functional static conducting device 100 on the hole that is electrically connected connect, and the fastener hole 102 usefulness fasteners on the multi-functional static conducting device 100 are connected with floating jacking row, thereby guarantee that arc gas distribution pipe 7 is fixed, and can guarantee that every pipeline section can both connect nearby leads the static line, the electrostatic leakage passage is many, and release rate is fast, guarantees that equipotential connects effect, so the multi-functional static of leading is adorned 100 and is put the fixed support that double as arc gas distribution pipe 7 is installed, and sees Fig. 5.
During use, manage air feed by blower fan or other inert gas sources to the gas transmission mother, deliver gas to central distributor 2 by air feed arm 4, be transported to arc gas distribution pipe 7 through bronchus 3 radially again, at last by arc gas distribution pipe 7 with whole seal ring 8 inner chambers of gas rectangular distribution.Can be according to actual conditions, to the female pipe of gas transmission input air, unreactable gas or foamite,, during fire, the female pipe of gas transmission is switched to the inertia source of the gas in the early stage if what charge in the system is air, then can implement local fire extinguishing immediately; Or, transfer foamite with female pipe of gas transmission and foam line cross-over connection temporarily, and can become " edge foam fire fighting system ", can make foam directly send to seal ring 8 internal combustion surfaces like this, dwindle the fire-fighting pretective acreage rationally, efficiently; Foam coverage speed is fast, is evenly distributed; And not wind-engaging, heat and the influence of oil storage liquid level, no course of conveying loss, fire-fighting efficiency significantly improves; Having both datonation-inhibition, control fire, fire extinguishing multi-functional, also is effectively replenishing original foam extinguishing system.
Claims (8)
1. the seal ring ventilation explosion suppression device of a floater, the air feed arm that comprises the female pipe of external gas transmission that communicates with floater, between the tank skin of oil tank and floating side wall, grommet type seals is arranged, described grommet type seals comprises once, secondary seal spare, it is characterized in that described seal ring ventilation explosion suppression device also comprises:
One central distributor is located at the center of floating top board top, top, is connected with the air feed arm;
Some radially bronchuses are located between central distributor and the seal ring, are connected with central distributor;
Some arc gas distribution pipes, be arranged in the seal ring or the edge buoyancy module in, be connected with bronchus radially, and on the arc gas distribution pipe, be provided with a plurality of deflation hole or jet thrusts that are used in seal ring delivering gas or foamite;
The gap that the top of described tank skin and seal ring has tail gas to discharge.
2. seal ring ventilation explosion suppression device according to claim 1 is characterized in that described radially bronchus is radial symmetrical distribution around the central distributor, and the linear spacing perforate of described arc gas distribution pipe is star-like with bronchus radially and is connected.
3. seal ring ventilation explosion suppression device according to claim 1, when it is characterized in that described arc gas distribution pipe places in the seal ring, described jet thrust is installed in the outside of arc gas distribution pipe, perhaps directly offers deflation hole in the outside of arc gas distribution pipe; When described arc gas distribution pipe placed in the edge buoyancy module, described jet thrust was installed on the through hole that floating top-side panel offers to refute mutually with the arc gas distribution pipe and connects.
4. seal ring ventilation explosion suppression device according to claim 1 is characterized in that described deflation hole or jet thrust are evenly distributed, and between the once sealing spare and secondary seal spare of seal ring.
5. according to the described seal ring ventilation of the arbitrary claim of claim 1 to 4 explosion suppression device, the once sealing spare that it is characterized in that described seal ring is a soft seal or mechanical seal; Described secondary seal spare is the secondary seal barrier film, is located at the top of once sealing spare, is provided with stay bearing plate above secondary seal spare, is provided with the secondary seal rubber flap in the upper end of stay bearing plate and cooperates with tank skin.
6. seal ring ventilation explosion suppression device according to claim 5 is characterized in that described secondary seal rubber flap is provided with static and leads except that plate.
7. according to the described seal ring ventilation of the arbitrary claim of claim 1 to 4 explosion suppression device, it is characterized in that described central distributor is connected with the air feed arm by scalable flexible pipe.
8. according to the described seal ring ventilation of the arbitrary claim of claim 1 to 4 explosion suppression device, it is characterized in that described arc gas distribution pipe is electrically connected by multi-functional static conducting device and floating jacking row, the fixed support that simultaneously multi-functional static conducting device double as arc gas distribution pipe is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200623555U CN201980610U (en) | 2011-03-08 | 2011-03-08 | Seal ring ventilation and explosion suppression device of floating-roof oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200623555U CN201980610U (en) | 2011-03-08 | 2011-03-08 | Seal ring ventilation and explosion suppression device of floating-roof oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201980610U true CN201980610U (en) | 2011-09-21 |
Family
ID=44608074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200623555U Expired - Lifetime CN201980610U (en) | 2011-03-08 | 2011-03-08 | Seal ring ventilation and explosion suppression device of floating-roof oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201980610U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679150A (en) * | 2011-03-08 | 2012-09-19 | 镇海国家石油储备基地有限责任公司 | Ventilation and explosion suppression device for seal ring of floating roof tank |
| CN102897445A (en) * | 2012-09-24 | 2013-01-30 | 常州大学 | Fireproof anti-explosion system of floating-roof oil tank |
| CN103010619A (en) * | 2012-12-24 | 2013-04-03 | 四川威特龙消防设备有限公司 | Mounting method of external floating roof oil tank active protection system |
| CN104370002A (en) * | 2014-11-14 | 2015-02-25 | 中国石油天然气股份有限公司大连石化分公司 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
| CN104482217A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Self compensating type inflatable soft sealing method with remote control function |
| CN107215581A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | Totally enclosed type floating roof tank |
| CN110027809A (en) * | 2019-03-28 | 2019-07-19 | 江苏德大石化科技有限公司 | A kind of rim space seal modules of storage tank |
| CN110194331A (en) * | 2019-06-27 | 2019-09-03 | 华陆工程科技有限责任公司 | A kind of steel single-deck floating roof multifunctional breath system |
-
2011
- 2011-03-08 CN CN2011200623555U patent/CN201980610U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679150A (en) * | 2011-03-08 | 2012-09-19 | 镇海国家石油储备基地有限责任公司 | Ventilation and explosion suppression device for seal ring of floating roof tank |
| CN102679150B (en) * | 2011-03-08 | 2013-11-06 | 镇海国家石油储备基地有限责任公司 | Ventilation and explosion suppression device for seal ring of floating roof tank |
| CN102897445A (en) * | 2012-09-24 | 2013-01-30 | 常州大学 | Fireproof anti-explosion system of floating-roof oil tank |
| CN103010619A (en) * | 2012-12-24 | 2013-04-03 | 四川威特龙消防设备有限公司 | Mounting method of external floating roof oil tank active protection system |
| CN104482217A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Self compensating type inflatable soft sealing method with remote control function |
| CN104370002A (en) * | 2014-11-14 | 2015-02-25 | 中国石油天然气股份有限公司大连石化分公司 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
| CN104370002B (en) * | 2014-11-14 | 2017-02-08 | 中国石油天然气股份有限公司大连石化分公司 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
| CN107215581A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | Totally enclosed type floating roof tank |
| CN110027809A (en) * | 2019-03-28 | 2019-07-19 | 江苏德大石化科技有限公司 | A kind of rim space seal modules of storage tank |
| CN110194331A (en) * | 2019-06-27 | 2019-09-03 | 华陆工程科技有限责任公司 | A kind of steel single-deck floating roof multifunctional breath system |
| CN110194331B (en) * | 2019-06-27 | 2024-04-12 | 华陆工程科技有限责任公司 | Multifunctional respiratory system for steel single-disc floating roof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201980610U (en) | Seal ring ventilation and explosion suppression device of floating-roof oil tank | |
| US3079242A (en) | Flame arrestor | |
| CN102679150B (en) | Ventilation and explosion suppression device for seal ring of floating roof tank | |
| US20110005194A1 (en) | Flashback shut-off | |
| CN210750991U (en) | Fire arrestor for pipeline | |
| CN112943997B (en) | Active explosion-proof device for dust explosion | |
| CN105521574A (en) | Explosion arrester for cave depot oil tank breathing pipeline | |
| US9751633B2 (en) | Aircraft safety device | |
| CN210873829U (en) | Lithium ion battery fire protection device | |
| CN201330891Y (en) | Static-free plastic pipe | |
| CN108346762A (en) | A kind of fire-proof and explosion-proof battery pack of electric vehicle | |
| CN117101064A (en) | New energy automobile charges parking stall quick extinguishing device | |
| CN110478831B (en) | Fireproof device for lithium ion battery | |
| CN202315048U (en) | Automatic fire-extinguishing device | |
| CN201618337U (en) | Suppression device of fuel-air explosion in confined space | |
| CN114569920B (en) | Oxygen pipeline flame arrester | |
| CN108619635B (en) | Compressed air foam intelligent fire fighting device for external floating roof crude oil storage tank | |
| RU159593U1 (en) | AEROSOL GENERATOR | |
| CN204182055U (en) | A kind of drawer type dry pipe spark arrester | |
| CN213347543U (en) | VOC explosion-proof flame arrester | |
| CN210195852U (en) | Novel fire retardant device | |
| CN110803404B (en) | Integrated nitrogen injection oxygen control fireproof intelligent device | |
| CN103670709A (en) | Explosion-proof valve of gas combustor | |
| CN212756903U (en) | Explosion-proof type spark arrester that bombs | |
| CN215275508U (en) | Flame arrester for biogas generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110921 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |