CN102679150A - Ventilation and explosion suppression device for seal ring of floating roof tank - Google Patents
Ventilation and explosion suppression device for seal ring of floating roof tank Download PDFInfo
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- CN102679150A CN102679150A CN2011100579608A CN201110057960A CN102679150A CN 102679150 A CN102679150 A CN 102679150A CN 2011100579608 A CN2011100579608 A CN 2011100579608A CN 201110057960 A CN201110057960 A CN 201110057960A CN 102679150 A CN102679150 A CN 102679150A
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Abstract
The invention relates to a ventilation and explosion suppression device for a seal ring of a floating roof tank. The ventilation and explosion suppression device comprises an air supply branch pipe which is communicated with the floating roof tank and externally connected with a gas transmission mother pipe, the annular seal ring is arranged between the tank wall of an oil tank and the side wall of a floating roof, the annular seal ring comprises a primary sealing piece and a secondary sealing piece, and the ventilation and explosion suppression device is characterized in that the ventilation and explosion suppression device further comprises a central distributor, a plurality of radial branch gas pipes and a plurality of arc-shaped gas distribution pipes, wherein the central distributor is arranged in the center position above a top plate of the floating roof and communicated with the air supply branch pipe; the plurality of the radial branch gas pipes are arranged between the central distributor and the seal ring and communicated with the central distributor; the plurality of the arc-shaped gas distribution pipes are arranged in the seal ring or an edge floating cabin and communicated with the radial branch gas pipes, and a plurality of exhaust holes or gas jet heads for conveying gas into the seal ring are arranged on the arc-shaped gas distribution pipes; and a gap for exhausting tail gas is arranged between the tank wall and the top end of the seal ring. The whole set of the system has the advantages of simple structure, low cost, and convenience in use and maintenance, thereby being a simple, economic, reasonable, effective and ideal technological way for realizing intrinsic safety of the oil tank.
Description
Technical field
The present invention relates to a kind of flameproof apparatus of crude oil storage tank, especially a kind of seal ring ventilation explosion suppression device of floating top oil tank.
Background technique
Along with crude oil storage tank maximizes, the fast development of clustered trend, the oil tank explosion-proof security issues becomes increasingly conspicuous.Floating top oil tank particularly; Owing to receive the influence of its sealing configuration; Assembling inevitably in the O-ring seal that forms between first and second Sealing and tank skin, floating side wall has inflammable gas and AIR MIXTURES (seeing Fig. 1, blast area), meets very easily breaking out of fire blast such as thunderbolt, static spark; Be the district occurred frequently of tank fire accident, such proportion that accounts for whole oil tank accident is up to 72.8%.
Incendiary source, seal space and the combustible gas that reaches explosion limit 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 receiving the restriction of tank structure; Though incendiary source is the guard key object, personal factor also can be controlled through 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, reliable software and hardware means.
Crude oil belongs to the inflammable and explosive chemical product of B-grade in the first class's class, and its steam is prone to form explosive mixture, range of explosion 1.1 (V%)～8.7 (V%) with air.Existing oil tank sealing configuration 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 explosion limit scope in the seal ring.
The existing patent No. is 200920319185.7 Chinese patent " a kind of oil plant bank inerting protective equipment of essential safety "; Comprise the breathing webmaster that is communicated with oil tank; And electric control equipment, damping device, safety valve; The controlled damping device that is connected with of said breathing pipe network; Be provided with controlled forward channel between damping device and the breathing pipe network, damping device and respirating tube are separately installed with first pressure transmitter, second pressure transmitter, online oxygen analyser on the net, and first pressure transmitter, second pressure transmitter, online oxygen analyser are electrically connected with electric control equipment respectively; Safety valve is installed on the damping device, be separately installed with on the said oil tank with breathe air inlet stop valve that pipe network is connected and with the discharge line valve of atmosphere; Gas oxygen concentration in the said oil tank detects through portable oxygen analyser.It is through breathing pipe network oil tank to be charged into the purpose that inert gas has reached protection, and still, it carries out whole oil tank, is not to carry out to the oil tank seal ring specially, and the area of protection is big, complex structure and cost are higher.The present invention forces to feed a large amount of air or inert gas through process means in seal ring, air capable of using directly on the one hand, brute force is driven away oil gas effectively, makes combustible gas deviation of concentration range of explosion; Indifferent gas also capable of using on the other hand is full of whole seal ring and keeps micro positive pressure, with the entering of effective prevention air, makes seal ring become the inertia isolation zone by the fire peril space.
Summary of the invention
Technical problem to be solved by this invention is that a kind of simple in structure, with low cost, working service seal ring ventilation explosion suppression device of floating top oil tank easily is provided to the above-mentioned state of the art; Through to carrying inert gas or foamite extinguisher in the seal ring, make device have fire prevention, explosion-proof and fire-extinguishing function concurrently.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of seal ring ventilation explosion suppression device of floating top oil tank; The air feed arm that comprises the female pipe of external gas transmission that communicates with floating top oil tank; The O-ring seal that between the tank skin of oil tank and floating top-side panel, forms; Said O-ring seal comprises once, secondary seal spare, it is characterized in that said seal ring ventilation explosion suppression device also comprises:
One central distributor is located at the central position 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 air manifold tubes, be arranged in the seal ring or the edge buoyancy module in, be connected with bronchus radially, and on the arc air manifold tube, be provided with a plurality of exhaust port or jet thrusts that are used in seal ring conveying gas or foamite extinguisher;
The gap that the top of said tank skin and seal ring exists tail gas to discharge.
As improvement, said radially bronchus is radial symmetrical distribution around the central distributor, and the linear spacing perforate of said arc air manifold tube is star-like with bronchus radially and is connected.
As improvement, when said arc air manifold tube placed in the seal ring, said jet thrust was installed in the outside of arc air manifold tube, perhaps directly offers exhaust port in the outside of arc air manifold tube; When said arc air manifold tube placed in the edge buoyancy module, said jet thrust was installed on the through hole that floating top-side panel offers to refute mutually with the arc air manifold tube and connects.
Improve, said exhaust port 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 said seal ring is a soft seal or mechanical seal; Said secondary seal spare is the secondary seal barrier film, is located at the top of a soft seal, above secondary seal spare, is provided with dunnage, is provided with the secondary seal rubber flap in the upper end of dunnage and cooperates with tank skin.
Further improve, said secondary seal rubber flap is provided with static and leads except that plate.
Further improve, said central distributor is connected with the air feed arm through scalable flexible pipe.
Further improve, said arc air manifold tube is electrically connected through several multi-functional static conducting devices and floating jacking row, guarantee between the every pipeline section, the arc air manifold tube with float push up between equipotential; The fixed support that simultaneously multi-functional static conducting device double as arc air manifold tube is installed.
Further improve again; The female pipe of said gas transmission connects blower fan or other source of the gas; Perhaps connect inert gas preparing apparatus, indifferent gas storage tank, steel cylinder or other inertia source of the gas; Perhaps connect fixing, move fire fighting device or fire-fighting truck, defeated foamite extinguisher during fire in the early stage, interim make up " edge foam fire fighting system ".
Specific operation technology is: said blower fan or other source of the gas are according to WF or thunder and lightning early warning system information when " operation as required ", or other necessary period; The operations staff starts blower fan in advance, or opens and quote the source of the gas outlet valve, opens jar female pipe of a group gas transmission cut-off valve; The female manage-style of control gas transmission is pressed 10～25kPa; Central distributor static pressure 4～10kPa, radially the bronchus tail is pressed 1～4kPa, air quantity 500～3000m
3/ h jar only, implementation system ventilates; Perhaps when " continuous operation ", blower fan is kept in continuous operation, or the source of the gas outlet valve is held open continuous ventilating, the female manage-style pressure of control gas transmission 10～25kPa, central distributor static pressure 4～10kPa, radially bronchus tail pressure 1～4kPa; Air quantity 500～3000m
3/ h jar only makes seal space continue to be in the essential safety state; And the female pipe of said gas transmission is when " fire attack "; During fire,, then switch to immediately and transfer the foamite extinguisher flow process in the early stage if explosion suppression device is shut down condition or ventilation state; Open female perhaps the air feed arm and fixedly the cross-over connection valve of fire fighting device of managing of gas transmission of explosion suppression device; Or directly be connected with foam fire truck rapid pipe joint, directly in seal space, inject foamite extinguisher, implement " edge foam fire fighting system " fire extinguishing by standard foam fire extinguishing craft index; If explosion suppression device is in the slight positive pressure state that feeds indifferent gas, then increase inert gas and feed blast, control arc air manifold tube exhaust outlet pressure>=50Pa implements the marginal mode fire-fighting fire extinguishing.
Compared with prior art; The invention has the advantages that: the upper surface at floating top oil tank is set up central distributor; Radial radially bronchus is set on central distributor, is connected with the arc air manifold tube through bronchus radially again, through the air feed arm with gas from central distributor, radially bronchus, arc air manifold tube are transported in the seal ring; Thereby reach the purpose of driving away oil gas in the seal ring, make the combustable gas concentration in the seal ring depart from range of explosion; Simultaneously, the arc air manifold tube 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 present invention makes every effort to dissolve from the source oil tank seal ring fire safety evaluating hidden danger; Can in seal ring, carry air, inert gas or foamite extinguisher according to actual conditions, 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 floating top oil tank of the present invention;
Fig. 2 is the sectional view that the arc air manifold tube is installed in the seal ring of the present invention;
Fig. 3 is the sectional view that the arc air manifold tube is installed in the edge of the present invention buoyancy module;
Fig. 4 is a ventilation explosion suppression device air flow direction schematic representation of the present invention;
Fig. 5 is multi-functional static conducting device structural drawing.
Embodiment
Below in conjunction with the accompanying drawing instance the present invention is described in further detail.
As shown in the figure; A kind of seal ring ventilation explosion suppression device of floating top oil tank; The air feed arm 4 that comprises the female pipe of external gas transmission that communicates with floating top oil tank 1, said floating top oil tank 1 comprise 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, formation O-ring seal 8 between the tank skin 11 of oil tank 1 and floating top-side panel 14; Said O-ring seal 8 comprises once, secondary seal spare 81,82, and the once sealing spare 81 of said seal ring 8 is a soft seal; Said secondary seal spare 82 is the secondary seal barrier film; Be located at the top of a soft seal 81; Above secondary seal spare 82, be provided with dunnage 83; Be provided with secondary seal rubber flap 84 in the upper end of dunnage 83 and cooperate, and on said secondary seal rubber flap 84, be provided with static and lead, the gap 86 that has tail gas to discharge between said tank skin 11 and the secondary seal rubber flap 84 except that plate 85 with tank skin 11; Central position above floating top top board 12 is provided with a central distributor 2, is connected with air feed arm 4 through a bellows 5; Around central distributor 2, offer through hole symmetrically and evenly; Connect some radially bronchuses 3 respectively; Said radially bronchus 3 is radial symmetrical distribution around central distributor 2; The outer end of said radially bronchus 3 is connected with arc air manifold tube 7, and said arc air manifold tube 7 can place and also can place in the seal ring 8 in the edge buoyancy module 15, the 7 linear spacing perforates of arc air manifold tube; Be star-like with bronchus 3 radially and be connected, on the arc air manifold tube, be provided with a plurality of exhaust port or jet thrusts that are used for conveying gas in seal ring;
When said arc air manifold tube 7 placed in the seal ring 8, of Fig. 2, said jet thrust was installed in the outside of arc air manifold tube 7, perhaps directly offered exhaust port 9 ' in the outside of arc air manifold tube 7; When said arc air manifold tube 7 placed in the edge buoyancy module 15, as shown in Figure 3, said jet thrust 9 was installed on the through hole that floating top-side panel 14 offers to refute mutually with arc air manifold tube 7 and connects; Said exhaust port 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 converted into " 2 district " by " 0/1 district " pressure; Realize essential safety, the intensified safety accumulating.Further improve, arc air manifold tube 7 is electrically connected with floating jacking row through several multi-functional static conducting devices 100, and stationary platen 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, are responsible for being fixed once sealing spare, and the stationary platen 101 of multi-functional static conducting device 100 is pressed on arc air manifold tube 7 on the fixed metal plate again; Thereby fix arc air manifold tube 7, a plurality of tenminal blocks of welding on the arc air manifold tube 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 fastening pieces on the multi-functional static conducting device 100 are connected with floating jacking row; Thereby guarantee that arc air manifold tube 7 is fixed, and can guarantee that every pipeline section can both connect nearby and lead the static line that the electrostatic leakage passage is many; Release rate is fast; Guarantee that equipotential connects effect,, see Fig. 5 so the multi-functional static of leading is adorned 100 and put the fixed support that double as arc air manifold tube 7 is installed.
Whole ventilation explosion suppression device processing medium can adopt following three kinds:
1. through blower fan or other source of the gas, in the ventilation pipe network, send into air, forced ventilation is directly driven away oil gas;
2. through inert gas preparing apparatus, indifferent gas storage tank, steel cylinder or other inertia source of the gas, in the ventilation pipe network, send into inert gas, implement dilution, displacement, seal space is transformed into the inertia guard circle;
3. through fixing, move fire fighting device, or fire-fighting truck transfers foamite extinguisher, interim structure " edge foam fire fighting system " with the ventilation pipe network during fire in the early stage.
The whole ventilation explosion suppression device method of operation is divided into following three kinds:
1. operation as required
According to WF or thunder and lightning early warning system information, or other necessary period, the operations staff starts blower fan in advance, or opens and quote the source of the gas outlet valve, opens the female pipe of the defeated wind cut-off valve of ventilation explosion suppression device.The female manage-style of control gas transmission is pressed 10～25kPa, central distributor static pressure 4～10kPa, and radially the bronchus tail is pressed 1～4kPa; Air quantity 500～3000m
3/ h jar only, implementation system ventilates;
2. operation continuously
Blower fan is kept in continuous operation, or the source of the gas outlet valve is held open, and makes the pipe network continuous ventilating of ventilation explosion suppression device, and the female manage-style of control gas transmission is pressed 10～25kPa, central distributor static pressure 4～10kPa, and radially the bronchus tail is pressed 1～4kPa; Air quantity 500～3000m
3/ h jar only makes seal space continue to be in the essential safety state;
3. fire attack
During fire,, then switch to immediately and transfer the foamite extinguisher flow process in the early stage if the ventilation explosion suppression device is shut down condition or ventilation state.Open female perhaps the air feed arm and fixedly the cross-over connection valve of fire fighting device of managing of gas transmission of ventilation explosion suppression device; Or directly be connected with foam fire truck rapid pipe joint; Directly in seal space, inject foamite extinguisher, implement " edge foam fire fighting system " fire extinguishing by standard foam fire extinguishing craft index;
If the ventilation explosion suppression device is in the slight positive pressure state that feeds indifferent gas, then increase inert gas and feed blast, control arc air manifold tube exhaust outlet pressure >=50Pa implements the marginal mode fire-fighting fire extinguishing;
When so whole device uses; Manage air feed through blower fan or other inert gas sources to the gas transmission mother; Deliver gas to central distributor 2 through air feed arm 4, be transported to arc air manifold tube 7 through bronchus 3 radially again, at last by arc air manifold tube 7 with gas whole seal ring 8 inner chambers that evenly distribute.Can be according to actual conditions, to the female pipe of gas transmission input air, inert gas or foamite extinguisher,, 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 extinguisher 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 surface 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 multiple function, also is effectively replenishing original foam extinguishing system.
Claims (11)
1. the seal ring ventilation explosion suppression device of a floating top oil tank; The air feed arm that comprises the female pipe of external gas transmission that communicates with floating top oil tank; Between the tank skin of oil tank and floating side wall, O-ring seal is arranged; Said O-ring seal comprises once, secondary seal spare, it is characterized in that said seal ring ventilation explosion suppression device also comprises:
One central distributor is located at the central position 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 air manifold tubes, be arranged in the seal ring or the edge buoyancy module in, be connected with bronchus radially, and on the arc air manifold tube, be provided with a plurality of exhaust port or jet thrusts that are used in seal ring conveying gas or foamite extinguisher;
The gap that the top of said 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 said radially bronchus is radial symmetrical distribution around the central distributor, and the linear spacing perforate of said arc air manifold tube 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 said arc air manifold tube places in the seal ring, said jet thrust is installed in the outside of arc air manifold tube, perhaps directly offers exhaust port in the outside of arc air manifold tube; When said arc air manifold tube placed in the edge buoyancy module, said jet thrust was installed on the through hole that floating top-side panel offers to refute mutually with the arc air manifold tube and connects.
4. seal ring ventilation explosion suppression device according to claim 1 is characterized in that said exhaust port 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 said seal ring is a soft seal or mechanical seal; Said secondary seal spare is the secondary seal barrier film, is located at the top of once sealing spare, above secondary seal spare, is provided with dunnage, is provided with the secondary seal rubber flap in the upper end of dunnage and cooperates with tank skin.
6. seal ring ventilation explosion suppression device according to claim 5 is characterized in that said 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 said central distributor is connected with the air feed arm through 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 said arc air manifold tube is electrically connected through multi-functional static conducting device and floating jacking row, the fixed support that multi-functional static conducting device double as arc air manifold tube is installed.
9. according to the described seal ring ventilation of the arbitrary claim of claim 1 to 4 explosion suppression device; It is characterized in that the female pipe of said gas transmission connects blower fan or other source of the gas; Perhaps connect inert gas preparing apparatus, indifferent gas storage tank, steel cylinder or other inertia source of the gas; Perhaps connect fixing, move fire fighting device or fire-fighting truck, defeated foamite extinguisher during fire in the early stage, interim make up " edge foam fire fighting system ".
10. seal ring ventilation explosion suppression device according to claim 9 is characterized in that said blower fan or other source of the gas when " operation as required ", are according to WF or thunder and lightning early warning system information; Or other necessary period, the operations staff starts blower fan in advance, or opens and quote the source of the gas outlet valve; Open jar female pipe of a group gas transmission cut-off valve, the female manage-style of control gas transmission is pressed 10～25kPa, central distributor static pressure 4～10kPa; Radially the bronchus tail is pressed 1～4kPa, air quantity 500～3000m
3/ h jar only, implementation system ventilates; Perhaps when " continuous operation ", blower fan is kept in continuous operation, or the source of the gas outlet valve is held open continuous ventilating, the female manage-style pressure of control gas transmission 10～25kPa, central distributor static pressure 4～10kPa, radially bronchus tail pressure 1～4kPa; Air quantity 500～3000m
3/ h jar only makes seal space continue to be in the essential safety state.
11. seal ring ventilation explosion suppression device according to claim 9; It is characterized in that the female pipe of said gas transmission is when " fire attack "; During fire,, then switch to immediately and transfer the foamite extinguisher flow process in the early stage if explosion suppression device is shut down condition or ventilation state; Open female perhaps the air feed arm and fixedly the cross-over connection valve of fire fighting device of managing of gas transmission of explosion suppression device; Or directly be connected with foam fire truck rapid pipe joint, directly in seal space, inject foamite extinguisher, implement " edge foam fire fighting system " fire extinguishing by standard foam fire extinguishing craft index; If explosion suppression device is in the slight positive pressure state that feeds indifferent gas, then increase inert gas and feed blast, control arc air manifold tube exhaust outlet pressure >=50Pa implements the marginal mode fire-fighting fire extinguishing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057960 CN102679150B (en) | 2011-03-08 | 2011-03-08 | Ventilation and explosion suppression device for seal ring of floating roof tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057960 CN102679150B (en) | 2011-03-08 | 2011-03-08 | Ventilation and explosion suppression device for seal ring of floating roof tank |
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| CN102679150A true CN102679150A (en) | 2012-09-19 |
| CN102679150B CN102679150B (en) | 2013-11-06 |
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| CN 201110057960 Expired - Fee Related CN102679150B (en) | 2011-03-08 | 2011-03-08 | Ventilation and explosion suppression device for seal ring of floating roof tank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274140A (en) * | 2013-06-09 | 2013-09-04 | 浙江海洋学院 | Floating roof oil tank and oil and gas safety device thereof |
| CN103350834A (en) * | 2013-07-30 | 2013-10-16 | 四川威特龙消防设备有限公司 | Active protection structure for primary sealing space of external floating roof type oil storage tank |
| CN109675225A (en) * | 2019-01-29 | 2019-04-26 | 安徽省国发石化设备有限责任公司 | A kind of multistage fire fighting extinguisher in oil tank |
| CN109954241A (en) * | 2019-04-03 | 2019-07-02 | 威特龙消防安全集团股份公司 | A kind of device and method with carbon dioxide Extinguish The Fire On Oil |
| CN114435785A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Floating roof tank edge sealing oil gas collecting system and method |
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| CN201980610U (en) * | 2011-03-08 | 2011-09-21 | 镇海国家石油储备基地有限责任公司 | Seal ring ventilation and explosion suppression device of floating-roof oil tank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274140A (en) * | 2013-06-09 | 2013-09-04 | 浙江海洋学院 | Floating roof oil tank and oil and gas safety device thereof |
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| CN109675225A (en) * | 2019-01-29 | 2019-04-26 | 安徽省国发石化设备有限责任公司 | A kind of multistage fire fighting extinguisher in oil tank |
| CN109954241A (en) * | 2019-04-03 | 2019-07-02 | 威特龙消防安全集团股份公司 | A kind of device and method with carbon dioxide Extinguish The Fire On Oil |
| CN114435785A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Floating roof tank edge sealing oil gas collecting system and method |
| CN114435785B (en) * | 2020-10-31 | 2024-01-09 | 中国石油化工股份有限公司 | Oil gas collection system and method for edge sealing of floating roof tank |
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| Publication number | Publication date |
|---|---|
| CN102679150B (en) | 2013-11-06 |
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