CN2648254Y - Heat insulation fireproof and antiexplosive structure in fire of gas chemicals pressing low-temperature storing container - Google Patents
Heat insulation fireproof and antiexplosive structure in fire of gas chemicals pressing low-temperature storing container Download PDFInfo
- Publication number
- CN2648254Y CN2648254Y CN 03249359 CN03249359U CN2648254Y CN 2648254 Y CN2648254 Y CN 2648254Y CN 03249359 CN03249359 CN 03249359 CN 03249359 U CN03249359 U CN 03249359U CN 2648254 Y CN2648254 Y CN 2648254Y
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- fire
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Abstract
The utility model relates to a heat-insulating, fireproofing and explosion prevention structure used in a fire for high-pressure low-temperature storage of gaseous chemicals. The utility model is characterized in that: a heat insulating composite material layer or a further fire proofing material layer is arranged to the outer surface of the present high-pressure low-temperature storage vessel of gaseous chemicals, a mature heat insulating technology and a mature fire proofing technology are subtly combined. By utilizing simple structure to carry out heat insulating protection or double protection of heat insulating and fire proofing to the high-pressure low-temperature storage vessel of gaseous chemicals in a fire accident, the significant hidden dangers of the high-pressure low-temperature storage vessel of gaseous chemicals in the condition of a fire accident is solved.
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 a kind of 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:
Domestic existing individual layer tank structure; main consideration thermal insulation layer (thermal-protective coating); certain heat-blocking action is arranged; mainly be to consider that rising because of atmospheric temperature is to storaging liquid temperature shock in the tank body; protect simultaneously under normal use condition; operating temperature causes the temperature of tank interior to exceed the design allowed band because of atmospheric temperature changes in jar, does not use flameproof protection, existing many blast precedents.
The domestic double-deck large tank structure of just having brought into use; it mainly considers thick type flameproof protection housing; certain heat-blocking action is arranged; also consider the protection of petrochemical industry class fire epoxy fireproof paint abroad simultaneously; but do not consider under the fire accident state; heat insulation and frpf duplicate protection are difficult to the generation of averting a calamity property explosive accident.
The problem of its existence:
1. use common thermal insulating material separately, can not ensure under the fire accident state, to the protection of housing, after its housing is heated and exceeds critical temperature, lose mechanical property significantly, thereby cause calamitous explosive accident;
2. the external petrochemical industry class fire fireproof paint that uses separately; one; price is high; its two, the just at present the most authoritative in the world fireproof paint production unit and the protected data of measuring unit show, can only protect under the fire accident state; the frame temperature is appreciated its frame mechanical property of back in the design allowed band; with regard to petrochemical industry class coating itself, can not ensure the temperature after this appreciation, conduct to intensification value after the tank interior in the scope that design allows.Under the fire situation, catastrophic failure is still within the bounds of possibility.
Up to the present; in China and the world wide also not by the pressurize blast problem under the fire accident state of cryogenic storage container of the compound solution gaseous chemical product of heat-insulation composite material and petrochemical industry class fire fireproof paint; or the protection problem of under extraordinary thermal-protective material and the compound solution fire accident of the special fireproof coating state cryogenic storage container being exploded, and only be that independent heat-insulating technique and independent fireproofing technique are used this field.But the security threat that in the time of can not resisting fire condition reservoir vessel is caused, its consequence is catastrophic.
Technology contents
There are the problems referred to above in the utility model at prior art; purpose provides the heat-insulating, fire-preventing blasting resistance structure of a kind of gaseous chemical product pressurization cryogenic storage container in fire; be bonded on the reservoir vessel heat insulation with the flameproof protection technology dexterously effectively thereby solved the major safety risks problem of gaseous chemical product pressurization cryogenic storage container; simple in structure, but very effective.
Concrete technical solution of the present utility model is that the appearance at existing gaseous chemical product pressurization cryogenic storage container installs composite material layer additional.Its structure comprises the existing container body that stores pressurization cryogenic gaseous chemical product, at the container body outer wall in conjunction with composite material layer, composite material layer and container body outer wall adopt the mechanical bond mode, as the connection of " wearing the clothes " formula, link plate connection, snapping, or the chemical bonding mode, as painting type, extraordinary high pressure painting formula.
The effect of this composite material layer is: when fire condition occurs; thermal-protective coating can be in the guard time of design (as being generally 2 hours); special steel material shell to container is protected; make it not intensification because of causing under the fire accident situation; make compressive strength and the reduction of other mechanical property and the decay of steel; consider the maximum bearing temperature and the critical temperature of special steel material simultaneously, remain in the scope of design.And the variation of the process operation parameter (pressure, temperature) of chemical product in jar under the interior low-temperature storage of guarantee storage tank is in the design allowed band.
The utility model further also can be in the composite material layer appearance in conjunction with fireproof jointing sheath; adopt the chemical bonding mode; as coating, the ripe airless spraying of one pack system, the external mature equipment airless spraying of double-component mode, should guarantee that generally adhesion is greater than more than the 0.15MP.Fireproof jointing sheath can be selected fireproof paint or anti-petrochemical industry class fire epoxy fireproof paint.
The effect of this protective layer is: when fire condition occurs; fireproof jointing sheath can be in the guard time of design (as being generally 2 hours); can 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; make it lose heat-insulating capability, thereby guarantee that thermal-protective coating plays heat-blocking action in the guard time of design.
The utility model has the advantages that: by compound with ripe heat-insulating technique and ripe fireproofing technique cleverly; utilize simple structural type that the pressurization of the gaseous chemical product in fire accident cryogenic storage container is carried out thermal insulation protection or heat insulation and fire prevention duplicate protection; ensure under the fire accident state with this; the temperature of container body metal shell and other mechanical properties remain in the scope of design; and guarantee simultaneously is stored in the design of cryochemistry product in the container; the operation process operating parameter; in the scope that design allows; the blast of the low-temperature storage liquid plant that may cause when stopping fire, the security threat that when effectively resisting fire condition reservoir vessel is caused.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, do not consider explosion-proof problem under the fire accident state, just considered the heat-insulating problem under the normal conditions, and the layout of tank body generally is a tank battery with regard to having above 98% storage facilities.Particularly heat jar (high pressure low temperature) is in case the fire accident state occurs and set off an explosion, and nearly the facility of 1km above (containing 1km) and building moment level to the ground.Its practical value is difficult to describe with concrete economic value.
Description of drawings
Fig. 1 is the schematic representation of this heat-insulating, fire-preventing blasting resistance structure.
Embodiment
As shown in Figure 1; this figure has reflected a 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, and the centre is a composite material layer 2, and outermost is a fireproof jointing sheath 3.Composite material layer 2 adopts a kind of superinsulation composite material, is chemically bonded on the metal shell 1, and fireproof jointing sheath adopts anti-petrochemical industry class fire epoxy fireproof paint, also is the outer surface that is combined in composite material layer 2 by the chemical bonding mode.
The present offshore company of superinsulation composite material that this example adopts 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:
dQ/dt＝-λA(dt/dn)
In the 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:
Metal 5～420[w/m.k]
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 (5)
1, the heat-insulating, fire-preventing blasting resistance structure in the gaseous chemical product pressurization cryogenic storage container fire comprises it is characterized in that the container body of normally gaseous chemical product pressurization cryogenic storage container being combined with composite material layer at the container body outer wall.
2, heat-insulating, fire-preventing blasting resistance structure according to claim 1 is characterized in that also being combined with fireproof jointing sheath in the composite material layer appearance.
3, heat-insulating, fire-preventing blasting resistance structure according to claim 1 and 2 is characterized in that composite material layer and container body outer wall mechanical bond or chemical bonding.
4, heat-insulating, fire-preventing blasting resistance structure according to claim 1 and 2 is characterized in that fireproof jointing sheath and composite material layer appearance are chemical bonding.
5, heat-insulating, fire-preventing blasting resistance structure according to claim 2 is characterized in that fireproof jointing sheath is fireproof paint or anti-petrochemical industry class fire epoxy fireproof paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249359 CN2648254Y (en) | 2003-07-07 | 2003-07-07 | Heat insulation fireproof and antiexplosive structure in fire of gas chemicals pressing low-temperature storing container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249359 CN2648254Y (en) | 2003-07-07 | 2003-07-07 | Heat insulation fireproof and antiexplosive structure in fire of gas chemicals pressing low-temperature storing container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2648254Y true CN2648254Y (en) | 2004-10-13 |
Family
ID=34327582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249359 Expired - Lifetime CN2648254Y (en) | 2003-07-07 | 2003-07-07 | Heat insulation fireproof and antiexplosive structure in fire of gas chemicals pressing low-temperature storing container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2648254Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8038029B2 (en) | 2008-06-13 | 2011-10-18 | GM Global Technology Operations LLC | Activation of a pressure relief device |
| CN109374416A (en) * | 2018-09-20 | 2019-02-22 | 大连理工大学 | A kind of pressure vessel blasting test system and method for liquid oxygen environment |
-
2003
- 2003-07-07 CN CN 03249359 patent/CN2648254Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8038029B2 (en) | 2008-06-13 | 2011-10-18 | GM Global Technology Operations LLC | Activation of a pressure relief device |
| CN101603626B (en) * | 2008-06-13 | 2013-03-27 | 通用汽车环球科技运作公司 | Activation of a pressure relief device |
| CN109374416A (en) * | 2018-09-20 | 2019-02-22 | 大连理工大学 | A kind of pressure vessel blasting test system and method for liquid oxygen environment |
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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 |
Free format text: FORMER OWNER: TANG JIAN |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100721 Address after: Chongqing Nanping 400060 Chongqing City Economic Development Zone Economic Development Zone Dragon Dan Road No. 10 Patentee after: Chongqing Dazhong Erosion-Proof Co., Ltd. Address before: Chongqing Nanping 400060 Chongqing City Economic Development Zone Economic Development Zone Dragon Dan Road No. 10 Co-patentee before: Tang Jian Patentee before: Chongqing Dazhong Erosion-Proof Co., Ltd. |
|
| 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: Chongqing Nanping 400060 Chongqing City Economic Development Zone Economic Development Zone Dragon Dan Road No. 10 Patentee before: Chongqing Dazhong Erosion-Proof Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130707 Granted publication date: 20041013 |