CN204134081U - A kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank - Google Patents
A kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank Download PDFInfo
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- CN204134081U CN204134081U CN201420559152.0U CN201420559152U CN204134081U CN 204134081 U CN204134081 U CN 204134081U CN 201420559152 U CN201420559152 U CN 201420559152U CN 204134081 U CN204134081 U CN 204134081U
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Abstract
The utility model is a kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank, comprises the floating plate swimming in liquid level, the skeleton of described floating plate; Described skeleton gastight conduit is welded, comprise mutually isolated water pipe and tracheae, described floating plate upper surface is provided with two-phase flow shower nozzle, and the water inlet of described two-phase flow shower nozzle is connected with described water pipe, and the air inlet of described two-phase flow shower nozzle is communicated with described tracheae.In the technical solution of the utility model, for the feature of internal floating roof tank oil tank security against fire, fire-fighting emphasis is arranged on the floating plate face of internal floating roof tank, the gastight conduit as the skeleton of floating plate own is utilized to transmit fire-fighting medium as fire demand water and nitrogen, if floating plate has ignition point, then by two-phase spraying nozzle ejection fog, spread in around ignition point, isolate catch fire material and oxygen, fire smothering is lowered the temperature by aqueous vapor simultaneously, prevents resume combustion.
Description
Technical field
The utility model relates to a kind of extinguishing device field, particularly can be used for the extinguishing device of the Transform of Floating Deck for Internal Floating Roof Tank of security against fire in a kind of internal floating roof tank for petrochemical industry oil storage tank.
Background technology
In petrochemical enterprise, oil storage tank general structure form is more common in arch-roof tank, and according to the difference of structure, arch-roof tank can be divided into fixed tank and internal floating roof tank.But along with the aquaculture development and experience of science and technology is summed up, the arch-roof tank of present stage mostly is internal floating roof tank, fixed tank then progressively fades out the sight line of people.
Internal floating roof tank is the floating roof tank of band tank deck, is also the Novel storage tank that arch-roof tank and floating roof tank combine.The top of internal floating roof tank is the combination of vault and floating roof, and outside is vault, and inside is floating roof.Internal floating roof tank has particular advantages: one is compare with floating roof tank, because there is fixing top, effectively can prevent the intrusion of wind, sand, sleet or dust, the quality of absolute guarantee's liquid storage.Meanwhile, interior floating plate swims on liquid level, makes liquid without the vapor space, reduces evaporation loss 85% ~ 96%; Reduce air pollution, reduce Fire explosion dangerous, breaking out of fire generally can not cause large area burn, is easy to ensure liquid storage quality, is particularly suitable for storage premium gas and jet fuel and poisonous petrochemicals; Due to liquid level not having the gas compartment, therefore reduce the corrosion of tank skin tank deck, thus extend the service life of storage tank, two is under sealing same case, can reduce evaporating loss further compared with floating roof.The shortcoming of internal floating roof tank: compared with internal floating roof tank, steel plate consumption is many, and construction requirement is high; Compared with floating roof tank, inconvenient maintenance (hermetically-sealed construction), storage tank not easily maximizes, and is generally no more than 10000m at present
3.
All there is very conflagration potential safety hazard in petrochemical enterprise, belong to fire safety management emphasis place in production management process, and the oil storage tank as the important component part of petrochemical enterprise is then take precautions against the most important thing.In present stage, petrochemical enterprise usually adopts froth fire extinguishing system, water sprinkler system for internal floating roof tank, one or more technological means of facility such as security against fire such as movement (fixing) fire water monitor and smoke extinguishing system etc. are carried out strick precaution and puted out a fire to save life and property, but effect is not satisfactory.Generally speaking, most enterprises adopts fire fighting by foam system for internal floating roof tank, is aided with the form of spray system cooling.Once breaking out of fire, start foaming system and inject a large amount of foam fire smothering is carried out to pasta in tank body, start spray system simultaneously and cooling process is carried out to tank skin, prevent high temperature and to explode and tank body such as to cave at the upgrading accident.In addition, enterprise also needs mobile (fixing) formula foam monitor of configuration, water cannon and fire fighting truck etc. to carry out supplementary suing and labouring to storage tank fire.Some areas are also equipped with smoke extinguishing system simultaneously, are usually used in small-sized fixed tank, as 2000 M
3, 1000M
3, 700 M
3, 400 M
3equal-specification model oil storage tank.But, in existing fire-fighting equipment, all there is problem below:
1, water sprinkler system water consumption is large, does not economize on resources and easily causes the secondary disasters such as waterlogging;
2, the froth fire extinguishing system reaction time is long, strengthens fire extinguishing difficulty and even there will be situation out of control;
3, in foam fire-fighting process, because the thermal losses of high temperature height is very large, easily occur that topical foams covers not enough, burning things which may cause a fire disaster not easily extinguishes, and even may occur resume combustion situation;
4, foam tank reserves are limited, once the excessive situation that there will be foam fire-fighting underdosage of the intensity of a fire, affect fire rescue effect;
5, the fire foam term of validity is generally 2 years, but also to the limited provisioning request of storage temperature, very high to the maintenance cost of applying unit.
Summary of the invention
The purpose of this utility model is to provide a kind of floating plate for internal floating roof tank integration extinguishing device, saves material.
Technical scheme is a kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank, comprises the floating plate swimming in liquid level, the skeleton of described floating plate; Described skeleton gastight conduit is welded, comprise mutually isolated water pipe and tracheae, described floating plate upper surface is provided with two-phase flow shower nozzle, and the water inlet of described two-phase flow shower nozzle is connected with described water pipe, and the air inlet of described two-phase flow shower nozzle is communicated with described tracheae.
In the technical solution of the utility model, for the feature of internal floating roof tank oil tank security against fire, fire-fighting emphasis is arranged on the floating plate face of internal floating roof tank, the gastight conduit as the skeleton of floating plate own is utilized to transmit fire-fighting medium as fire demand water and nitrogen, if floating plate has ignition point, then by two-phase flow shower nozzle ejection fog, spread in around ignition point, isolate catch fire material and oxygen, fire smothering is lowered the temperature by aqueous vapor simultaneously, prevents resume combustion.
Preferred version of the present utility model has: two-phase flow shower nozzle is arranged on above floating plate by installing standpipe, and the spout of two-phase flow shower nozzle is 10-12cm from described floating plate upper surface distance.Water pipe and tracheae connect source of the gas and water source by main for pipeline, it is described that main to comprise air feed for pipeline main for pipeline with supply water for pipeline, described air feed is main adopts flexible material to make for pipeline and the pipeline that supplies water, and rises to described floating plate and be connected with tracheae with described water pipe in the middle part of oil storage tank.Flexible duct adopts retinue loop configuration.
In addition, also comprise monitoring system, described monitoring system comprises the temperature sensing cable established and be all arranged on the floating plate of internal floating roof tank, and Surveillance center and to be arranged on air feed main for pipeline with supply water for ducted selection control valve; Described temperature sensing cable communicates to connect with described control centre respectively, and air feed is main to be controlled by control centre for ducted each selection control valve respectively for pipeline and water supply.Become a kind of automatic fire protection system like this, when having detected that fire occurs, each selection control valve that Surveillance center controls in each fire_fighting pipe network closes, fire-fighting medium is full of very fast by various shower nozzle each position on the floating plate of internal floating roof tank fast as water, nitrogen grade, while making the fire smothering of fire point, reduces temperature, when the temperature will return back to normal, after Surveillance center is obtained by temperature sensing cable, control each selection control valve and disconnect, finish fire extinguishing task successfully.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is embodiment schematic diagram of the present utility model;
Fig. 2 is embodiment 1 structure chart () of the present utility model;
Fig. 3 is embodiment 1 structure chart (two) of the present utility model;
Fig. 4 is that Fig. 3 A amplifies;
Fig. 5 is embodiment 1 top view of the present utility model;
Fig. 6 is enlarged drawing in Fig. 5 circle.
In figure: 1, select control valve, 2, floating plate, 3, temperature sensing cable, 4, shower nozzle, 5, cable, 6, air supply header, 7, water main, 8, water source, 9, source of the gas, 10, control centre, 11, tank skin, 12, tank deck, 13, hermetically-sealed construction, 14, gas manifold, 15, water supply arm.
Detailed description of the invention
Embodiment 1, the present embodiment is a kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank, comprises the floating plate 2 swimming in liquid level, and floating plate 2 has its support frame at oil storage tank liquid level of support; Skeleton is welded by gastight conduit, top view as shown in Figure 5, it is by the pipeline welding through diameter by the pipeline of ring by ring, have two orthogonal two pipelines at least, these two pipelines meet air supply header 6 and water main 7 respectively, and air supply header 6 and water main 7 connect source of the gas 9 and fire water supply 8 respectively.Source of the gas can be the special nitrogen gas generator used, also can be the Nitrogen source gases etc. stored in factory, the nitrogen that these sources of the gas produce is sent to a special air accumulator by pipeline, then from air accumulator, air supply header 6 is linked into, then shower nozzle 4 is linked into by the gas manifold 14 of annular, here shower nozzle is two-phase flow shower nozzle, and gas manifold 14 is linked into two-phase flow shower nozzle air inlet by a segment pipe.Equally, the water in the surface water or water supply pipe can be taken out in water source 8 by special pump, also can directly use urban fire control water, is linked into the water inlet of two-phase flow shower nozzle by water main 7 and annular water supply arm 15.
In the present embodiment, two-phase flow shower nozzle is arranged on above floating plate by installing standpipe, and the spout of two-phase flow shower nozzle is 10-12cm from described floating plate upper surface distance.Water pipe and tracheae connect source of the gas and water source by main for pipeline, and air supply header 6 and water main 7 adopt flexible material to make, and rise to floating plate 2 and be connected with gas manifold 14 or water supply arm 15 in the middle part of oil storage tank.
Also comprise monitoring system, monitoring system comprises temperature sensing cable 3 in the floating plate established and be all arranged in internal floating roof tank, and control centre 10 and to be separately positioned on air feed main for pipeline with supply water for ducted selection control valve 1; Temperature sensing cable 3 communicates to connect with control centre 10 respectively, and each selection control valve 1 of air supply header 6 and water main 7 is controlled by control centre 10 respectively.Control centre 10 adopts communication cable 5 to communicate to connect with selecting control valve 1.
The present embodiment is while the defect of evading existing fire extinguishing system, draw advanced experience, for fire characteristic and the architectural feature of the floating plate of interior internal floating roof tank, adopt two-phase flow technology, utilize floating plate structural framework own that water route and gas path pipe are set, arrange nozzle specially used as required by floating plate upper strata, implement tank inside fire extinguishing object.It is advantageous that:
One, blow-off velocity are fast.Aqueous vapor acting in conjunction, forms annular thin water smoke cone, is separated by floating plate surface naked light, suppress entering of oxygen, form the environment knock down the flame that suffocates while fast vaporizing from root compression; Meanwhile, the nitrogen sprayed into and surrounding air merge in time, reduce environmental oxygen concentration, flammable oil gas concentration, and let-down vessel is inner fast, reaches fire extinguishing object.
Two, construction costs economy.The present invention is without the need to arranging pipeline separately, comprehensive utilization water supply steam line forms floating plate load-bearing skeleton, limited increase floating plate cost and quality while realizing extinguishing device function, but from integrated engineering cost, particularly with traditional design fire fighting device scheme comparison, economy is obvious.
Three, maintenance cost is low.The present invention adopts common municipal water pressure level to supply water and low pressure feed nitrogen (≤1.2MPa), without the need to special process, aqua medium can fully utilize municipal fire hydrant pipe network or tap water pipe network supply, nitrogen medium can fully utilize the existing air separation unit supply of petroleum chemical enterprise's production technology link or separate configurations air separation unit is directly separated from air, all there is not period of validity system in two media, do not need to change on time, significantly reduce enterprise's maintenance cost.
Four, resource consumption is few, without secondary disaster.For water resource day by day in short supply, the present invention adopts the principle of water mists, and in fire extinguishing procedure, decrease the consumption of water resource, meanwhile, attack time is short, further decreases the waste of water resource.In addition, nitrogen gas source is in air separation, and direct cost only comprises power consumption and equipment depreciation, has put out a fire not cause any secondary disaster to environment afterwards, meets environmental protection demand for development.
The present embodiment is before carrying out extinguishing effect analysis, the floating plate internal structure of internal floating roof tank and material are analyzed, is calculated by precision, utilize water supply network and gas transmission pipeline net work to form floating plate skeleton, alleviate and increase fire extinguishing system and the load that causes, do not affect intensity own and the function of floating plate.According to special two-phase flow shower nozzle effective active area, start to be evenly arranged with storage tank floating plate outer shroud.It is that 10 ~ 12cm is advisable with jet opening distance floating plate apparent height that shower nozzle installs riser length.The security that the present invention supplies in order to ensure extinguishing chemical, floating plate upper space is mainly according to oil storage tank fire or oil gas detonation, easily damage is caused to structure and pipeline, design the main pipeline supply adopting flexible corrosion protection corrosion material to make in the middle part of oil storage tank district for pipeline, and adopt retinue around avoiding pipeline to be wound around, extend service life and reduce maintenance probability.
Compared with the existing oil storage tank fire-fighting precautionary measures, the major advantage of the present embodiment is that system response time is short, and blow-off velocity is fast, and resource consumption is few, cost performance is high, and life cycle is long, and maintenance cost is low, Environmental Safety is without secondary disaster etc., and it is applied to internal floating roof tank Be very effective, and imbody has:
1, the present embodiment by fire extinguishing system and floating plate integrated, the nitrogen resource simultaneously utilizing petrochemical enterprise own and municipal water supply or plant area's fire hydrant water supply network, whole synthesis utilization rate is high; In addition, aqueous phase and the gas phase operating pressure of the present embodiment all belong to low pressure category, less demanding to pipe material, obviously reduce the engineering construction cost of petrochemical enterprise;
2, the present embodiment adopts nitrogen and water mists to act on fire extinguishing simultaneously, and two media all belongs to environmental protection extinguishing chemical, can not produce secondary disaster.Therefore, need not confirm when fire alarm directly to start, shorten the fire extinguishing system response time, the condition of a fire is controlled in the early stage of development;
3, the nozzle specially used operation principle that the present embodiment is supporting is cutting burning things which may cause a fire disaster root, separate combustible and flame, root burning things which may cause a fire disaster adopted water mists cooling, suffocate until extinguish completely, top flame adopts nitrogen rapid mixing, reduce oxygen concentration, reach fire extinguishing object.The employing of two-phase flow technology enhances fire extinguishing effectiveness, and extinguishing effect is obvious;
4, the present embodiment is nozzle specially used has patented technology, is controlled by shower nozzle drop size of water mist below 400 μm, and in extremely short fire extinguishing procedure, water consumption is few, and vaporizes in temperature-fall period, not easily causes the secondary disasters such as ponding; The nitrogen simultaneously sprayed into directly can be thrown into air, can not work the mischief to environment, safety and environmental protection;
5, in the present embodiment, the nitrogen of employing is inert gas, the phenomenon such as there will not be usefulness to reduce in storage process, rotten, therefore, its life cycle is limited hardly, the limitation that the foam solution having evaded existing foaming system must renew for 2 years, has saved maintenance cost; Generally be configured with large-scale nitrogen-making device and large-scale nitrogen storage tank in petrochemical enterprise, nitrogen can ensure nitrogen supply (NS) quantity and quality at any time by air separation, cheap, without the need to worrying the impact that fire-fighting dose is limited simultaneously;
6, the nozzle specially used modular construction hole minimum of a value in the present embodiment is 3mm, and low to water quality requirement, without the need to increasing too much filtration facility, regular maintenance cost is almost nil, greatly reduces the maintenance cost of enterprise.
Claims (6)
1. for an extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank, comprise the floating plate swimming in liquid level, described floating plate has and supports it and swim in the skeleton of liquid level; It is characterized in that: described skeleton is welded by gastight conduit, comprise mutually isolated water pipe and tracheae, described floating plate upper surface is provided with two-phase flow shower nozzle, the water inlet of described two-phase flow shower nozzle is connected with described water pipe, and the air inlet of described two-phase flow shower nozzle is communicated with described tracheae.
2. the extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank according to claim 1, is characterized in that: described two-phase flow shower nozzle is arranged on above floating plate by installing standpipe, and the spout of two-phase flow shower nozzle is 10-12cm from described floating plate upper surface distance.
3. the extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank according to claim 1, it is characterized in that: described water pipe and tracheae connect source of the gas and water source by main for pipeline, it is described that main to comprise air feed for pipeline main for pipeline with supply water for pipeline, described air feed is main adopts flexible material to make for pipeline and the pipeline that supplies water, and rises to described floating plate and be connected with tracheae with described water pipe in the middle part of oil storage tank.
4. the extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank according to claim 3, is characterized in that: described flexible duct adopts retinue loop configuration.
5. the extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank according to claim 3 or 4, is characterized in that: described water source is fire water supply, and described source of the gas is source nitrogen.
6. the extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank according to claim 5, it is characterized in that: also comprise monitoring system, described monitoring system comprises temperature sensing cable in the floating plate being all arranged in internal floating roof tank, and Surveillance center and to be separately positioned on air feed main for pipeline with supply water for ducted selection control valve; Described temperature sensing cable communicates to connect with described control centre respectively, and air feed is main to be controlled by control centre for ducted each selection control valve respectively for pipeline and water supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559152.0U CN204134081U (en) | 2014-09-27 | 2014-09-27 | A kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank |
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|---|---|---|---|
| CN201420559152.0U CN204134081U (en) | 2014-09-27 | 2014-09-27 | A kind of extinguishing device for Transform of Floating Deck for Internal Floating Roof Tank |
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| CN204134081U true CN204134081U (en) | 2015-02-04 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597248A (en) * | 2016-02-25 | 2016-05-25 | 安徽建筑大学 | Annular ultra-fine water spray fire-extinguishing system of oil storage tank |
| CN105641829A (en) * | 2016-02-25 | 2016-06-08 | 安徽建筑大学 | Radial ultra-fine water mist fire-extinguishing system for oil storage tank |
| CN105664401A (en) * | 2016-02-25 | 2016-06-15 | 安徽建筑大学 | Radial water mist fire extinguishing system for oil storage tank |
| CN105727474A (en) * | 2016-02-25 | 2016-07-06 | 安徽建筑大学 | Annular water mist fire extinguishing system of oil storage tank |
| CN106730541A (en) * | 2016-12-05 | 2017-05-31 | 浙江海洋大学 | A kind of high pressure nitrogen for external floating roof tank drives fine spray extinguisher |
| CN108066919A (en) * | 2016-11-16 | 2018-05-25 | 江苏瑞凌新能源科技有限公司 | A kind of fire-fighting oil tank froth fire extinguishing system |
| CN109731263A (en) * | 2019-03-04 | 2019-05-10 | 湖北科技学院 | A kind of fire-fighting function tank preventing dust accumulation |
| CN113003011A (en) * | 2021-03-05 | 2021-06-22 | 安徽省国发石化设备有限责任公司 | Oil tank sump rainwater foam liquid diversion device |
| CN113092048A (en) * | 2021-04-14 | 2021-07-09 | 大连理工大学 | Floating disc antiknock performance test equipment and test method |
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- 2014-09-27 CN CN201420559152.0U patent/CN204134081U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597248A (en) * | 2016-02-25 | 2016-05-25 | 安徽建筑大学 | Annular ultra-fine water spray fire-extinguishing system of oil storage tank |
| CN105641829A (en) * | 2016-02-25 | 2016-06-08 | 安徽建筑大学 | Radial ultra-fine water mist fire-extinguishing system for oil storage tank |
| CN105664401A (en) * | 2016-02-25 | 2016-06-15 | 安徽建筑大学 | Radial water mist fire extinguishing system for oil storage tank |
| CN105727474A (en) * | 2016-02-25 | 2016-07-06 | 安徽建筑大学 | Annular water mist fire extinguishing system of oil storage tank |
| CN108066919A (en) * | 2016-11-16 | 2018-05-25 | 江苏瑞凌新能源科技有限公司 | A kind of fire-fighting oil tank froth fire extinguishing system |
| CN106730541A (en) * | 2016-12-05 | 2017-05-31 | 浙江海洋大学 | A kind of high pressure nitrogen for external floating roof tank drives fine spray extinguisher |
| CN109731263A (en) * | 2019-03-04 | 2019-05-10 | 湖北科技学院 | A kind of fire-fighting function tank preventing dust accumulation |
| CN109731263B (en) * | 2019-03-04 | 2024-03-22 | 湖北科技学院 | Fire-fighting functional tank capable of preventing dust accumulation |
| CN113003011A (en) * | 2021-03-05 | 2021-06-22 | 安徽省国发石化设备有限责任公司 | Oil tank sump rainwater foam liquid diversion device |
| CN113003011B (en) * | 2021-03-05 | 2024-03-26 | 安徽省国发石化设备有限责任公司 | Rainwater foam liquid diversion device for oil tank sump |
| CN113092048A (en) * | 2021-04-14 | 2021-07-09 | 大连理工大学 | Floating disc antiknock performance test equipment and test method |
| CN113092048B (en) * | 2021-04-14 | 2021-12-31 | 大连理工大学 | Floating disc antiknock performance test equipment and test method |
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