CN2714937Y - Heat insulated, fire resistant and explosion proof structure for gaseous chemicals pressurized cryogenic reservoir vessel in fire - Google Patents
Heat insulated, fire resistant and explosion proof structure for gaseous chemicals pressurized cryogenic reservoir vessel in fire Download PDFInfo
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- CN2714937Y CN2714937Y CN 200420060200 CN200420060200U CN2714937Y CN 2714937 Y CN2714937 Y CN 2714937Y CN 200420060200 CN200420060200 CN 200420060200 CN 200420060200 U CN200420060200 U CN 200420060200U CN 2714937 Y CN2714937 Y CN 2714937Y
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Abstract
The utility model relates to a heat-insulation fire-proof anti-explosion structure for a pressurization low-temperature storage tank of gaseous chemicals in a fire state. The utility model is characterized in that the outer surface of a pressurization low-temperature storage tank of gaseous chemicals is provided with an air interlayer, a heat insulation composite material layer and a fireproof material layer, or further adds a spraying system. Through the combination of mature heat insulating technology and mature fireproof technology, the pressurization low-temperature storage tank of gaseous chemicals in fire accidents conducts multiple protections, such as heat insulating protection, fire-proof protection, air interlayer protection, spray cooling protection, etc. in given protection time by using a novel mode with simple structure. The utility model solves the problem that the pressurization low-temperature storage tank of gaseous chemicals has large safety hidden danger in a fire state.
Description
Technical field
The utility model belongs to hazardous chemical storage and resist technology field, is specifically related to the heat-insulating, fire-preventing blasting resistance structure in the gaseous chemical product pressurization cryogenic storage container fire.
Background technique
More general the having of protection mode of the cryogenic storage container of gaseous chemical product pressurization at present:
One, domestic existing individual layer tank structure, its protection mode is mainly considered thermal insulation layer (thermal-protective coating), and certain heat-blocking action is arranged.Thermal insulation layer mainly be protection because of the rising of atmospheric temperature to storaging liquid temperature shock in the tank body, protect simultaneously under normal use condition, an operating temperature does not cause the temperature of tank interior to exceed the design allowed band because of the change that atmospheric temperature raises in jar.
Two, the domestic double-deck macrotype spherical tank structure introducing and use of just having begun; the interlayer that its protection mode mainly is provided with filling with insulation material is protected tank body; preventing has certain heat-blocking action because of atmospheric temperature rises to the temperature shock of stored substance under the fire accident state.
Three, abroad on horizontal tank, consider to form fire protection layer,, can prevent the impact that external temperature rises stored substance temperature in the jar is formed to a certain extent in the hope of under the fire accident state, tank body being protected with anti-petrochemical industry class fire epoxy fireproof paint.
The problem that above-mentioned safeguard structure exists is as follows:
1, uses common heat preserving and insulating material or interlayer thermal-protective material separately, can not ensure under the fire accident state after its housing is heated and exceeds critical temperature, will to lose mechanical property significantly, thereby to cause calamitous explosive accident the protection of tank body.
2, use the structure of petrochemical industry class fireproof paint separately: one, price is high; They are two years old; the just at present the most authoritative in the world fireproof paint production unit and the data display of measuring unit; it can only be protected under the fire accident state; after the frame temperature raises; in the regular hour, its frame mechanical property is in the design allowed band, with regard to petrochemical industry class fireproof paint itself; can not ensure temperature conduction after this rising to tank interior, the intensification value of stored substance is in the scope that design allows in jar.Therefore, under the fire accident situation, catastrophic failure is still within the bounds of possibility, and domestic, existing many explosive accidents abroad take place.
Up to the present; also do not have technology to consider in the domestic and world wide and adopt modes such as heat insulation, fire prevention, air blanketing to carry out multiple protective, solve under the fire accident state protection question the cryogenic storage container explosion potential to gaseous chemical product pressurization cryogenic storage container.And only be that independent anti-atmosphere heat-insulating technique and independent fireproofing technique are used this field, consequently can not resist the security threat that the fire accident state causes reservoir vessel, consequence is catastrophic.
Technology contents
The problems referred to above that the utility model exists at prior art; purpose provides the heat-insulating, fire-preventing blasting resistance structure of a kind of gaseous chemical product pressurization cryogenic storage container under the fire accident state; heat insulation air blanketing dexterously, heat-insulation composite material is heat insulation and technology such as flameproof protection is bonded on the reservoir vessel effectively; and it is auxiliary with spray system; thereby solved gaseous chemical product pressurization cryogenic storage container blast protection problem in the certain hour under the fire accident state; won the time of eliminating major safety risks; simple in structure, but very effective.
Concrete technical solution of the present utility model is: relative fixed mutually combines outside the container body of existing gaseous chemical product pressurization cryogenic storage container composite material layer and fireproof jointing sheath; slot milling between container body outer wall and the composite material layer forms air blanketing.
Composite material layer by be distributed in the container body outer wall on supporting frame be connected, realize fixing at a distance of certain space forming air blanketing with container body; Also can by with being connected of the supporting frame of container body bottom, realize fixing at a distance of certain space forming air blanketing.Composite material layer can be a mechanical connection with being connected of container body outer wall: connect or snapping as take link plate by supporting frame; Can be mechanical connection or chemical adhesive between heat-insulation composite material and the fireproof material layer, chemical adhesive can be the extraordinary airless spraying mode of coating, one-component or two component, should guarantee that generally adhesion is greater than more than the 0.2MP.Fireproof jointing sheath can be selected general fireproof paint or anti-petrochemical industry class fire epoxy fireproof paint.
Further, this structure also has spray system on the container body outer wall, and establishes drain passage in the bottom of total.
When fire condition occurs:
At first be that outermost fire prevention of tank body and composite material layer play a role; fireproof jointing sheath can be in the guard time of design (as being generally 2 hours); resist extraneous effectively up to the above temperature of thousand degree; the temperature of thermal-protective coating outer surface is controlled in 200-800 ℃ the scope; and can avoid thermal-protective coating by the flame destruction of directly burning, lose heat-insulating capability.And thermal-protective coating the protection of fire protection layer next can the design guard time in (as being generally 2 hours) protect the special steel material shell of container; make it not intensification because of causing under the fire accident situation; cause the heating temperature of tank body steel to surpass its critical temperature of being heated; thereby the compressive strength and other mechanical property that cause the tank body steel reduce rapidly and decay; the twice protection barrier that is provided with on this basis; the process operation parameter (pressure, temperature) that has guaranteed low-temperature storage chemical product in the storage tank changes in the design allowed band.
Simultaneously in order to prolong the safety protection time to tank body; this structure has been introduced air blanketing dexterously between container body outer wall and composite material layer; utilize the little characteristic of air thermal conductivity with it as another layer heat preserving and insulating material; the outside heat that slows down passes to the speed of tank body; bring into play further guaranteeing role, and this layer is heat insulation need not increase cost.
Further again; at some in particular cases; heat is through conduction layer by layer for a long time; when making the tank surface temperature rise to a certain setting warning temperature; this structure is also considered further protective measure; promptly in the setting of tank body appearance or kept spray system; move by tactility apparatus such as smog or temperature; automatically open spray system; the tank body outer surface is directly carried out spraying cooling, take away heat, further guarantee the chemical product process operation parameter (pressure of low-temperature storage in the storage tank; temperature) variation is thoroughly stopped catastrophic failure within a certain period of time and is taken place in the design allowed band.
The utility model has the advantages that: by compound with ripe heat-insulating technique and ripe fireproofing technique cleverly; utilize simple structure innovation form that the pressurization of the gaseous chemical product under fire accident state cryogenic storage container is prevented fires; heat insulation; air blanketing; multiple protectives such as spray system; ensure that with this temperature of container body metal shell and other mechanical properties remain in the scope of design; further ensure the design that is stored in cryochemistry product in the container; the operation process operating parameter is in the scope that design allows; thereby in certain design time, stop the blast of the low-temperature storage equipment that may cause under the fire condition, effectively resist the security threat that fire causes reservoir vessel.
Petrochemical industry both at home and abroad at present, a large amount of low-temperature storage chemical product and low-temperature storage liquefied petroleum gas are arranged, when the fire accident state occurs, the technology of the present invention provides safety guarantee can for property, environment, life and the wealth of society, the technology settling mode is very simple effectively, has extremely strong use value.China only, according to incompletely statistics, the system of China Petrochemical Industry does not comprise CNOOC, PetroChina Company Limited., parent company of Chinese chemical industry group just has nearly 3000 to store tank bodies.No matter be normal temperature storage, or high pressure low temperature stores, nearly all storage facilities is not considered explosion-proof problem under the fire accident state, just considered the heat-insulating problem that anti-atmospheric temperature is impacted under the normal conditions, and the layout of tank body generally is a tank battery.Particularly heat jar (high pressure low temperature) will constitute serious threat near facility and building in case appearance sets off an explosion because of the fire accident state, and its practical value is difficult to describe with concrete economic value.
Description of drawings
Fig. 1 is first kind of embodiment's of this heat-insulating, fire-preventing blasting resistance structure a drawing in side sectional elevation.
Fig. 2 is second kind of embodiment's of this heat-insulating, fire-preventing blasting resistance structure a sectional arrangement drawing.
Embodiment
Embodiment 1: as shown in Figure 1; this figure has reflected a cross section with gaseous chemical product pressurization cryogenic storage container of structure of the present invention; its innermost layer is the metal shell 1 of gaseous chemical product pressurization cryogenic storage container; the metal shell outer wall is provided with spray system 2; the centre is air blanketing 3, composite material layer 4; outermost is a fireproof jointing sheath 5, and the passage 7 of draining spraying water is arranged at the bottom of total.Composite material layer 4 adopts a kind of superinsulation composite material, and fireproof jointing sheath adopts anti-petrochemical industry class fire epoxy fireproof paint, is combined in the outer surface of composite material layer by the chemical bonding mode.Be fixed with supporting frame 6 along metal shell 1 outer surface, be used for support fixation, between metal shell 1 and composite material layer 4, just formed air blanketing 3 like this apart from the shell certain distance and round the composite material layer 4 of shell.
Embodiment 2: referring to Fig. 2; this figure reflects that the protection structure is to set gradually air blanketing 3, composite material layer 4 outside the metal shell 1 of gaseous chemical product pressurization cryogenic storage container equally; outermost is a fireproof jointing sheath 5; and metal shell 1 outer wall is provided with spray system 2, and the passage 7 of draining spraying water is established in the bottom of total.They are different is that to have formed the structure of air blanketing 3 between metal shell 1 and the composite material layer 4 different, it is along the certain distance setting apart of metal shell 1 outer surface with composite material layer 4, form air blanketing 3 between them, metal shell 1 is realized mutual fixed support with composite material layer 4 by the common supporting frame 8 based on the bottom.
The present offshore company of superinsulation composite material that adopts in the foregoing description is used for the military science field in a large number, and its main core parameter-heat-transfer coefficient λ is at high temperature less than 0.02W/m.k.Its principle is:
Fourier (Fourier) law:
In dQ/dt=-λ A (dt/dn) formula, the heat of conduction in Q---the unit time, heat conduction speed (p/s) or (w);
A---heat-conducting area;
λ---scaling factor claims thermal conductivity [w/m.k];
Dt/dn---temperature gradient [k/m]
Thermal conductivity λ is that temperature gradient is 1[k/m], heat-conducting area is 1 (m
2) the interior heat that transmits of following unit time of situation.The material thermal conductivity is big more, illustrates that the capacity of heat transmission of this material is strong more, and vice versa.Usually, when needing to improve heat conduction speed, can select the big material of thermal conductivity for use.Otherwise, in the time of reducing heat conduction speed, should select the little material of thermal conductivity for use.The thermal conductivity of material commonly used is:
Structural material 0.5～2[w/m.k]
Thermoinsulation material 0.01～0.4[w/m.k]
Water 0.6[w/m.k]
Other liquid 0.09～0.7[w/m.k]
Therefore, superinsulation composite material, heat-insulation composite material, its key problem is thermal conductivity λ.This superinsulation composite material, there is very ripe product in market abroad, and heat-insulation composite material is then ripe in the Chinese market transaction.
Certainly, protection of the present utility model is not limited in the cited combination of present embodiment and material is selected.
Claims (4)
1, the heat-insulating, fire-preventing blasting resistance structure in the gaseous chemical product pressurization cryogenic storage container fire; the container body that comprises normally gaseous chemical product pressurization cryogenic storage container; it is characterized in that outside container body, being fixed with the composite material layer and the fireproof jointing sheath that mutually combine; leave the space between container body outer wall and the composite material layer, form air blanketing.
2, heat-insulating, fire-preventing blasting resistance structure according to claim 1 is characterized in that on the container body outer wall spray system being arranged, and establishes drain passage in the bottom of total.
3, heat-insulating, fire-preventing blasting resistance structure according to claim 1 and 2, it is characterized in that composite material layer by be distributed in the container body outer wall on supporting frame be connected, realize fixing at a distance of certain space forming air blanketing with container body; Also can by with being connected of the supporting frame of container body bottom, realize fixing at a distance of certain space forming air blanketing.
4, heat-insulating, fire-preventing blasting resistance structure according to claim 1 and 2 is characterized in that fireproof jointing sheath is fireproof paint or anti-petrochemical industry class fire epoxy fireproof paint, by mechanical bond or chemical adhesive outside composite material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060200 CN2714937Y (en) | 2004-07-08 | 2004-07-08 | Heat insulated, fire resistant and explosion proof structure for gaseous chemicals pressurized cryogenic reservoir vessel in fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060200 CN2714937Y (en) | 2004-07-08 | 2004-07-08 | Heat insulated, fire resistant and explosion proof structure for gaseous chemicals pressurized cryogenic reservoir vessel in fire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2714937Y true CN2714937Y (en) | 2005-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060200 Expired - Lifetime CN2714937Y (en) | 2004-07-08 | 2004-07-08 | Heat insulated, fire resistant and explosion proof structure for gaseous chemicals pressurized cryogenic reservoir vessel in fire |
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| CN (1) | CN2714937Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010003353A1 (en) * | 2008-07-07 | 2010-01-14 | 北京天擎化工有限责任公司 | Leakage self-help container for stocking hazardous chemical products |
| CN101216145B (en) * | 2008-01-06 | 2011-12-07 | 陈仁多 | Fire resistant pneumatic explosive-proof gas cylinder |
| CN103939730A (en) * | 2014-04-28 | 2014-07-23 | 杨元清 | Explosion-proof low-temperature pressure storage tank |
| CN109114415A (en) * | 2018-08-06 | 2019-01-01 | 重庆恒中能源装备有限公司 | A kind of energy-saving emission-reducing apparatus |
| CN110260156A (en) * | 2019-06-27 | 2019-09-20 | 杨康 | A kind of anhydrous ammonia tank for capableing of anti-liquid nitrogen heating |
| CN110260155A (en) * | 2019-06-27 | 2019-09-20 | 杨康 | A kind of anhydrous ammonia tank |
-
2004
- 2004-07-08 CN CN 200420060200 patent/CN2714937Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216145B (en) * | 2008-01-06 | 2011-12-07 | 陈仁多 | Fire resistant pneumatic explosive-proof gas cylinder |
| WO2010003353A1 (en) * | 2008-07-07 | 2010-01-14 | 北京天擎化工有限责任公司 | Leakage self-help container for stocking hazardous chemical products |
| CN103939730A (en) * | 2014-04-28 | 2014-07-23 | 杨元清 | Explosion-proof low-temperature pressure storage tank |
| CN109114415A (en) * | 2018-08-06 | 2019-01-01 | 重庆恒中能源装备有限公司 | A kind of energy-saving emission-reducing apparatus |
| CN110260156A (en) * | 2019-06-27 | 2019-09-20 | 杨康 | A kind of anhydrous ammonia tank for capableing of anti-liquid nitrogen heating |
| CN110260155A (en) * | 2019-06-27 | 2019-09-20 | 杨康 | A kind of anhydrous ammonia tank |
| CN110260155B (en) * | 2019-06-27 | 2021-01-26 | 江苏天海特种装备有限公司 | Liquid ammonia storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING DAZHONG EROSION-PROOF CO., LTD. Free format text: FORMER OWNER: TANG JIAN Effective date: 20100721 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400060 CHONGQING VOLK ANTICORROSION,NO.10,DANLONG ROAD,CHONGQING ECONOMIC DEVELOPMENT ZONE,SHAPNGBA DISTRICT,CHONGQING CITY TO: 401121 BUILDING 9, NO.18, HONGHU WEST ROAD, YUBEI DISTRICT, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100721 Address after: 401121 No. 18 West Honghu Road, Chongqing, Yubei District, 9 Patentee after: Chongqing Dazhong Erosion-Proof Co., Ltd. Address before: 400060 Chongqing Dazhong antisepsis Co., Ltd., No. 10, Dan long road, Chongqing Economic Development Zone, Shapingba District, Chongqing Patentee before: Tang Jian |
|
| C56 | Change in the name or address of the patentee |
Owner name: VOLK-ANTICORROSION CO., LTD. Free format text: FORMER NAME: CHONGQING DAZHONG EROSION-PROOF CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 401121, 9, West Honghu Road, 18 North New District, Chongqing Patentee after: Volk-anticorrosion Co., Ltd. Address before: 401121 No. 18 West Honghu Road, Chongqing, Yubei District, 9 Patentee before: Chongqing Dazhong Erosion-Proof Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140708 Granted publication date: 20050803 |