CN107314238A - A kind of explosion-proof tank - Google Patents
A kind of explosion-proof tank Download PDFInfo
- Publication number
- CN107314238A CN107314238A CN201610263618.6A CN201610263618A CN107314238A CN 107314238 A CN107314238 A CN 107314238A CN 201610263618 A CN201610263618 A CN 201610263618A CN 107314238 A CN107314238 A CN 107314238A
- Authority
- CN
- China
- Prior art keywords
- gas
- explosion
- tank
- gas outlet
- proof tank
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0388—Arrangement of valves, regulators, filters
- F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of explosion-proof tank, wherein described explosion-proof tank is provided with least one leakage port, the leakage port is connected with corresponding gas outlet, the outlet of the gas outlet is extended at the safety zone outside storage tank storage area or safety devices, and the nominal diameter of the leakage port and gas outlet is not less than 200mm;When pressure inside the tank increases to over normal value to the explosion-proof tank of the present invention for any reason; automatically can rapidly be lost heart decompression; material steam is channeled to safety zone through gas outlet or safety device is discharged or disposed; the risk fired so as to avoid lighting a fire the Mars of scene of fire outside by tank; may also be combined with nitrogen bag technique realizes inert gas shielding to tank inside simultaneously, gas-phase space in tank system is turned into not quick-fried intrinsic safety system of lighting a fire.
Description
Technical field
Technical field is stored the present invention relates to chemicals, the device of risk is fired during being stored more particularly, to a kind of reduction hazardous chemical.
Background technology
Chemicals storage container, such as blast accident of common storage tank often occurs, and often has firing or situation that the other condition of a fire in tank field trigger multiple storage tanks to fire in succession for storage tank.
Storage tank is the demand for adapting to the frequent raising and lowering of tank level, it is typically provided with pneumostome, gas is allowed to pass in and out, but this opening is generally all smaller, the demand of the timely discharge for a large amount of steam that material is produced because heating up or seething with excitement in tank can not be met, even and if provided with emergency decompression mouthful, prior art is generally also simply discharged to outside tank, and the gas safety of discharge is sent into safety zone or safety device without corresponding pipeline.When material is because of the reason such as fire heating even boiling outside tank in storage tank, this conventional pneumostome is difficult to the demand for meeting a large amount of gas discharges, and the passage without other gas that can largely release, pressure inside the tank may be caused to be increased to and be enough the degree for damaging tank body, the further deterioration caused the accident；Also, because the usually not special pipeline of firing property gas that these conventional opens are discharged is sent to safety zone or safety devices, but space nearby is directly released into outside tank, the igniting such as Mars easily flown upward by fire incident scene is fired.
Large-scale storage tank is when for example meeting with external flame or the damage of tank internal heater causes a large amount of heat carriers to inject, and the accidents such as superpressure may occur for tank inside.American Petroleum Institute (API) API2000《The ventilation of normal pressure and low pressure storage tank》, define it is several prevent tank inside occur the adoptable measure of super high pressure accident, principle all be top open press seal plate or use explosion diaphragm.But these emergency blow-down measures are all to release the gas into tank deck outer vicinity space, and gas is sent to safety zone or safety devices by no Special safety pipeline, it is thus possible to which the igniting such as Mars flown upward by fire incident scene is fired.
Chinese patent CN201020562598 is proposed one kind and is connected using such as nitrogen bag with storage tank pneumostome, so as to realize the device of constant pressure sealing nitrogen protection to storage tank.But the patent is not related to the heavy caliber pressure release proposed with this patent to the mutual cooperation of the gas outlet of safety zone, completely realizes the explosion-proof situation of storage tank.Although the nitrogen protection of the patent makes the gas-phase space in storage tank turn into the security system that igniting is not fired; but when being heated at high temperature outside storage tank by fire; possible material parts boiling produces a large amount of material steams in tank; storage tank respiratory system involved by the patent is not enough to Quick Depressurization; it is likely to result in the serious problems of storage tank overvoltage explosion; or pressure is vented to space near tank deck via the pressure release of prior art; the material steam of releasing is mixed into firing property atmosphere with extraneous air, and the igniting such as Mars that may be flown upward by fire incident scene is fired.
The content of the invention
Present invention seek to address that foregoing mentioned technical problem, a kind of explosion-proof tank is provided, wherein described explosion-proof tank is provided with least one leakage port, the leakage port is connected with corresponding gas outlet, the outlet of the gas outlet is extended at the safety zone outside storage tank storage area or safety devices, and the nominal diameter of the leakage port and gas outlet is not less than 200mm, preferably not less than 300mm, more preferably no less than 600mm, most preferably not less than 1800mm.
At the import of the gas outlet and/or exit and/or the gas outlet any place are further provided with current-limiting apparatus, the current-limiting apparatus is when both sides pressure difference is less than setting value, reduce the area of passage of gas outlet, so as to limit the free-flowing of gas, it is even switched off gas outlet, when pressure difference is more than setting value in both sides, recover or increase the area of passage of gas outlet.The current-limiting apparatus includes the one or several kinds in pressure valve, large-scale gravity type emergency decompression valve, emergency decompression manhole device, explosion diaphragm and/or breather valve.Sealing function is played to pipeline under normal circumstances, automatic opening loses heart under setting differential pressure conditions, allow storage tank to maintain the gas turnover needed for the frequent normal lifting of liquid level.Different current-limiting apparatus can be used alone or in combination as needed.
It is described partly or entirely the gas outlet import at and/or exit and/or the gas outlet any place, be further provided with least one fire retardant device.
The storage tank and/or the gas outlet are connected with least one variable volume container, such as airbag or airbag group of the connection equipped with nitrogen, the volume of the variable volume container is more than 1/4 of fluid any time maximum net discrepancy amount in the explosion-proof tank, more preferably preferably 1.2 times, 5 times.The variable volume container is attached to gas treatment equipment, and it includes gas adding set, gas removal device, gas purification apparatus and/or gas more changing device.The gas adding set can be that nitrogen adding set, gas removal device are that oxygen removal device, gas purification apparatus are that gas condensing unit, gas more changing device are pumping or air-blowing device.The variable volume container is attached to device for exerting, and it includes weight device for exerting, spring device for exerting and/or power device for exerting.Leakage port and gas outlet can meet storage tank because of the breathing requirement that the gas of needs is passed in and out liquid level is normally lifted, and quick pressure releasing requirement when normal or improper over-pressed, but without changing the situation that gas-phase space in storage tank is firing property atmosphere.It is connected with such as nitrogen bag with the breathing mouth of pipe and/or the discouraged mouth of pipe of storage tank, it is possible to achieve the constant pressure to storage tank is sealed and freely breathed so that storage tank and whole vapor delivery line system are by the automatic full-time state for being maintained at inert gas shielding, as intrinsic safety system.
Even if safety zone refers to have material in the gas outlet outlet drain or burning, also the harm of personnel and the other objects of surrounding is caused without significant risk, safety devices refer to artificial or natural object, it is allowed to the material that the outlet connection of the gas outlet is discharged with safe disposal from the outlet；The leakage port and gas outlet have sufficiently large air flux, so that storage tank meets with material in outside accident scene of a fire heating tank, when causing the partial material boiling a large amount of material steams of generation, there can be enough gas relieving capacities, it is enough to cause the degree of tank body damage so as to avoid pressure inside the tank from being increased to, and/or cause storage tank gas-phase space explosion time in by tank, enough gas can be discharged rapidly, so as to avoid pressure inside the tank from being increased to the degree for being enough to cause tank body to damage.Gas outlet generally can be metal material or any other material, be resistant to pressure when high temperature of fire and emergency decompression.
Preferably, the explosion-proof tank is not provided with conventional storage tank opening, it is allowed to which gas goes out tank under normal and/or abnormal condition but will go out tank gas safety and be sent to the opening of safety zone or safety devices without suitable channel in tank；Or to part or all of such opening of setting, cancel the function that gas in the permission tank of these openings goes out tank under normal and/or abnormal condition；Or to part or all of such opening of setting, install the gas outlet of the invention of respective corresponding size additional, safety zone or safety devices are sent to so as to which tank gas safety will be gone out.Breathing and/or decompression function due to these conventional opens are replaced by the leakage port and gas outlet, thus no longer need these not enough safe settings, or need to install these openings additional the gas outlet of the present invention, increase its security function.
" storage tank " described in file of the present invention, should include various forms and size, and storage and/or transport need to prevent the material fired and/or need to prevent the container and reactor of the material of neurotoxic injury.The invention mainly relates to prevent from firing the application of aspect, but also include not firing material dangerous but with risk of toxicity.
If field accident thinks current discharge distance when disposing also needs increase, it is easy to be connected another pipeline with the outlet of existing gas outlet to discharge the length that distance is temporarily added to need.
Advantage for present invention is：Being eliminated with simple method in prior art tank may be fired after gas emptying by scene of a fire igniting outside tank, the common phenomenon for causing multiple storage tanks to fire in succession；Nitrogen bag is used so that storage tank turns into the intrinsic safety system that will not also fire of igniting.1）When pressure inside the tank increases to over normal value to storage tank for any reason, automatically can rapidly be lost heart decompression, and the firing property gas released is not as nearby space is vented on the spot outside prior art tank, but safety zone or safety devices discharge are sent to by special pipe safety or is disposed, so as to avoid the risk fired of being lighted a fire the Mars of scene of fire outside by tank；2）Inert gas shielding is realized to tank inside, gas-phase space in tank system is turned into not quick-fried intrinsic safety system of lighting a fire.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples：
Fig. 1 is a kind of embodiment of the present invention；
Fig. 2 is another embodiment of the present invention.
In figure：1- storage tanks, 2- leakage ports, 3- gas outlets, the outlet of 4- gas outlets, 5- condensate liquid collection ports, the 6- breathing mouths of pipe, 7- airbags.
Embodiment
It refer to shown in Fig. 1 to Fig. 2, the explosion-proof tank provided in the present invention illustrated with reference to specific embodiment.
Explosion-proof tank schematic diagram of the present invention as shown in Figure 1, storage tank 1 is provided with leakage port 2, leakage port 2 is connected with matched gas outlet 3, and the outlet 4 of the gas outlet 3 is arranged in the place of safety outside tank area, and provided with condensate liquid collection port 5 and the breathing mouth of pipe 6 at outlet 4.There can be the equipment such as valve, exhaust gas sampling pipe, oxygen analyser, explosion suppression device on discouraged pipeline.Outlet 4 generally can be base closed or completely enclosed, and the breathing of storage tank can mainly be carried out by the breathing mouth of pipe 6.There can be the relevant apparatus such as breather valve on the breathing mouth of pipe 6, outlet 4 can automatically turn on pressure release in the case where the breathing mouth of pipe 6 has little time pressure release.
Explosion-proof tank schematic diagram of the present invention as shown in Figure 2, the breathing mouth of pipe 6 of storage tank 1 is connected with totally enclosed big duct type plastics airbag 7.Airbag volume is slightly larger than the volume of storage tank, and airbag is arranged on meets the requirement part such as safety from tank area.
As deformation, the respiratory siphon 6 of airbag shown in Fig. 2 is not to be connected to gas outlet 3, and is directly on storage tank 1.Airbag shown in Fig. 2, can be connected with the gas outlet 3 of more than one storage tank and/or storage tank.
It the foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the invention; equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made; or other related technical fields are directly or indirectly used in, similarly include within the scope of the present invention.
Claims (9)
1. a kind of explosion-proof tank, it is characterised in that:The explosion-proof tank is provided with least one leakage port, and the leakage port is connected with corresponding gas outlet, and the outlet of the gas outlet is extended at the safety zone outside storage tank storage area or safety devices, and the nominal diameter of the leakage port and gas outlet is not less than 200mm.
2. explosion-proof tank according to claim 1, it is characterised in that：The gas outlet is further provided with current-limiting apparatus, and the area of passage of gas outlet is closed or reduced to the current-limiting apparatus when both sides pressure difference is less than setting value, when in both sides, pressure difference is more than setting value, the area of passage of recovery or increase gas outlet.
3. explosion-proof tank according to claim 2, it is characterised in that：The current-limiting apparatus includes the one or several kinds in pressure valve, large-scale gravity type emergency decompression valve, emergency decompression manhole device, explosion diaphragm and/or breather valve.
4. explosion-proof tank according to claim 1 or claim 2, it is characterised in that：The gas outlet is further provided with least one fire retardant device.
5. explosion-proof tank according to claim 1 or claim 2, it is characterised in that：The storage tank and/or the gas outlet are connected with least one variable volume container, and the volume of the variable volume container is more than 1/4 of fluid any time maximum net discrepancy amount in the explosion-proof tank.
6. explosion-proof tank according to claim 5, it is characterised in that：The variable volume container is attached to gas treatment equipment, and it includes gas adding set, gas removal device, gas purification apparatus and/or gas more changing device.
7. explosion-proof tank according to claim 6, it is characterised in that：It for nitrogen adding set, gas removal device is that oxygen removal device, gas purification apparatus are that gas condensing unit, gas more changing device are pumping or air-blowing device that the gas adding set, which is,.
8. explosion-proof tank according to claim 5, it is characterised in that：The variable volume container is attached to device for exerting, and it includes weight device for exerting, spring device for exerting and/or power device for exerting.
9. the explosion-proof tank according to claim 1-8, it is characterised in that：For prevent material from firing and/or toxicant diffusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263618.6A CN107314238A (en) | 2016-04-26 | 2016-04-26 | A kind of explosion-proof tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263618.6A CN107314238A (en) | 2016-04-26 | 2016-04-26 | A kind of explosion-proof tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107314238A true CN107314238A (en) | 2017-11-03 |
Family
ID=60184891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610263618.6A Pending CN107314238A (en) | 2016-04-26 | 2016-04-26 | A kind of explosion-proof tank |
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| Country | Link |
|---|---|
| CN (1) | CN107314238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454681A (en) * | 2019-07-26 | 2019-11-15 | 中车齐齐哈尔车辆有限公司 | Control method, control pressurer system and the means of transport of liquefied gas shipping container |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202054339U (en) * | 2010-02-20 | 2011-11-30 | 靳晓燕 | Sealing constant-pressure device for sealing container and keeping constant pressure |
| CN102750993A (en) * | 2012-06-28 | 2012-10-24 | 中国核电工程有限公司 | Passive containment accident pressure-releasing system capable of containing discharged gas |
| CN205640230U (en) * | 2016-04-26 | 2016-10-12 | 合肥艾普拉斯环保科技有限公司 | Explosion -proof storage tank |
-
2016
- 2016-04-26 CN CN201610263618.6A patent/CN107314238A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202054339U (en) * | 2010-02-20 | 2011-11-30 | 靳晓燕 | Sealing constant-pressure device for sealing container and keeping constant pressure |
| CN102750993A (en) * | 2012-06-28 | 2012-10-24 | 中国核电工程有限公司 | Passive containment accident pressure-releasing system capable of containing discharged gas |
| CN205640230U (en) * | 2016-04-26 | 2016-10-12 | 合肥艾普拉斯环保科技有限公司 | Explosion -proof storage tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454681A (en) * | 2019-07-26 | 2019-11-15 | 中车齐齐哈尔车辆有限公司 | Control method, control pressurer system and the means of transport of liquefied gas shipping container |
| CN110454681B (en) * | 2019-07-26 | 2020-10-02 | 中车齐齐哈尔车辆有限公司 | Liquefied gas transport container control method, pressure control system and transport tool |
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