CN211472553U - Multilayer combination formula high temperature fused salt storage tank heat preservation basis - Google Patents
Multilayer combination formula high temperature fused salt storage tank heat preservation basis Download PDFInfo
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- CN211472553U CN211472553U CN201922084229.9U CN201922084229U CN211472553U CN 211472553 U CN211472553 U CN 211472553U CN 201922084229 U CN201922084229 U CN 201922084229U CN 211472553 U CN211472553 U CN 211472553U
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Abstract
The utility model discloses a multilayer combination formula high temperature fused salt storage tank heat preservation basis solves prior art because of the unsatisfactory problem that the fused salt that appears that leads to the easy fracture of high temperature fused salt storage tank of heat preservation basic thermal insulation performance leaks. The utility model comprises a reinforced concrete foundation layer arranged on the ground and a heat preservation and insulation supporting layer arranged on the reinforced concrete foundation layer; the heat-insulation supporting layer comprises a heat-conducting layer poured by heavy castable, a heat-insulation layer and a heat-resistant layer which are built by heat-insulation refractory bricks, and a bearing layer poured by high-strength castable, wherein the heat-conducting layer, the heat-insulation layer, the heat-resistant layer and the bearing layer are sequentially distributed from bottom to top, and the heat-conducting layer is poured on the reinforced concrete foundation layer. The utility model discloses thermal insulation performance is good, can effectively guarantee the safety of high temperature fused salt storage tank, reduces the damaged risk of revealing of high temperature fused salt storage tank, and then ensures the safety of whole heat-retaining system, steady operation.
Description
Technical Field
The utility model relates to a solar photothermal power equipment field, concretely relates to be applied to heat preservation basis of solar photothermal power station high temperature fused salt storage tank is applicable to the structural design of the higher temperature fused salt that surpasss conventional storage tank design temperature or other medium storage tanks.
Background
Solar photo-thermal power generation is an important way for cleaning energy sources, the tower type photo-thermal power generation using the fused salt as the heat storage working medium is a generally accepted scheme in the world at present, the fused salt can be used as an intermediate heat energy carrier, and can be stored in a fused salt storage tank to realize energy storage, so that the continuous and stable output of electric energy can be ensured at night or under the condition of no sunlight. The molten salt storage tank achieves the purpose of storing energy by storing high-temperature molten salt, and is core equipment of the whole energy storage system.
The molten salt storage tank foundation faces a number of problems to be solved: firstly, it must be ensured that the heat loss of the storage tank is small and the molten salt does not solidify due to too low a temperature. The molten salt storage tank has large diameter and heavier equipment, the molten salt filled in the molten salt storage tank has higher density (about 1.8 times) than water, and the operation weight of the whole equipment is far larger than that of a common storage tank with the same specification, so the foundation of the molten salt storage tank needs to be firm and firm. In addition, the temperature of the molten salt is higher, and particularly the working temperature of the high-temperature molten salt storage tank can reach 565 ℃.
According to heat transfer calculation and actual operation conditions of the solar photo-thermal test power station, the high temperature in the storage tank is slowly conducted to the storage tank foundation and the surrounding land over time. Can avoid the influence of high temperature to the peripheral soil of storage tank basis through the mode built on stilts with storage tank basis, but the storage tank basis of this kind of structure need set up a large amount of stands, and the investment is far above ordinary basis, and construction cycle is also longer, still can't avoid the influence of high temperature in the storage tank to basic concrete in addition.
Generally, the concrete forming the foundation is dehydrated and pulverized at a higher temperature, thereby losing strength; the bearing capacity of the land at a higher temperature is greatly reduced, so that the foundation is not uniformly settled and deformed, a bottom plate, a wall plate and the like of the storage tank are broken, and molten salt leakage occurs. Currently, photo-thermal power stations which are actually put into commercial operation internationally are the GEMASOLAR of American New-month sand dune and Spain, and the GEMASOLAR both cause long-term shutdown due to leakage of a molten salt storage tank; the GEMASOLAR molten salt storage tank is caused by the leakage of molten salt due to large-scale uneven settlement of the foundation.
Therefore, design a be applied to heat preservation basis of solar photothermal power station high temperature fused salt storage tank, utilize the heat-resisting of multilayer performance difference, insulation material's integrated configuration goes to bear whole fused salt storage tank itself and the gross weight of interior medium, with effectively isolated high temperature fused salt to storage tank reinforced concrete foundation's influence, avoid high temperature to lead to supporting the concrete damage of storage tank basis and the basis near soil to lead to the bearing capacity to descend because of high temperature, with the safety of guaranteeing high temperature fused salt storage tank, reduce the damaged risk of revealing of high temperature fused salt storage tank, and then guarantee the safety of whole heat-retaining system, steady operation, become the technical problem that technical field technical staff of the affiliated field awaits much.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a multilayer combination formula high temperature fused salt storage tank heat preservation basis solves prior art because of the unsatisfactory bearing capacity that leads to high temperature fused salt storage tank heat preservation basic bearing structure descends under the high temperature condition of holding performance of high temperature fused salt storage tank heat preservation basis, finally leads to bottom plate and the wallboard of high temperature fused salt storage tank to break the problem that the fused salt leaked to appear.
In order to achieve the above object, the utility model adopts the following technical scheme:
a multilayer combined type high-temperature molten salt storage tank heat preservation foundation comprises a reinforced concrete foundation layer arranged on the ground and a heat preservation and insulation supporting layer arranged on the reinforced concrete foundation layer; the heat-insulation supporting layer comprises a heat conduction layer poured by heavy castable, a heat insulation layer and a heat resistance layer which are built by heat-insulation refractory bricks, and a bearing layer poured by high-strength castable, wherein the heat conduction layer, the heat insulation layer, the heat resistance layer and the bearing layer are sequentially distributed from bottom to top, and the heat conduction layer is poured on the reinforced concrete foundation layer.
Furthermore, the heat-resistant layer comprises a lower heat-resistant layer built by light heat-insulating refractory bricks and an upper heat-resistant layer which is cast on the lower heat-resistant layer by light castable, the lower heat-resistant layer is built on the heat-insulating layer, and the bearing layer is cast on the upper heat-resistant layer.
Further, the top surface of the reinforced concrete foundation layer is horizontal.
Furthermore, the top surfaces of the heat conduction layer, the heat insulation layer and the bearing layer are all horizontal.
Further, the top surfaces of the lower heat-resistant layer and the upper heat-resistant layer are horizontal.
Furthermore, the heat-insulation support layer is arranged on the upper surface of the heat-insulation support layer, and the heat-insulation support layer is arranged on the upper surface of the heat-insulation support layer.
Further, the top end of the cofferdam wall is higher than the top surface of the bearing layer.
Further, the bottom end of the cofferdam wall is poured on the reinforced concrete foundation layer.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has the advantages of simple structure, design scientific and reasonable, high durability and convenient use, utilize the heat-resisting of multilayer performance difference, insulation material's integrated configuration removes to bear the total weight of whole fused salt storage tank itself and interior medium, with effectively isolated high temperature fused salt to the influence on storage tank reinforced concrete basis, avoid high temperature to lead to supporting the concrete damage on storage tank basis and near basis soil to lead to bearing capacity because of high temperature to descend, in order to guarantee the safety of high temperature fused salt storage tank, reduce the damaged risk of revealing of high temperature fused salt storage tank, and then guarantee the safety of whole heat-retaining system, the steady operation.
The utility model comprises a reinforced concrete foundation layer arranged on the ground and a heat preservation and insulation supporting layer arranged on the reinforced concrete foundation layer; the heat preservation and insulation support layer comprises a heat conduction layer poured by heavy castable, a heat preservation layer and a heat resistance layer which are built by heat insulation refractory bricks, and a bearing layer poured by high-strength castable. Utilize the combination of the different performance materials of multilayer to the high temperature in the high temperature molten salt storage tank is effectively completely cut off to the influence of reinforced concrete foundation layer, guarantees to support the reinforced concrete foundation layer of high temperature molten salt storage tank and stabilizes and the safety of high temperature molten salt storage tank. The utility model discloses the different performance of each layer of make full use of material, with bearing, heat-resisting, thermal-insulated, keep warm and heat transfer heat dissipation undertake respectively by each functional layer, can effectively reduce the damaged risk of revealing of high temperature fused salt storage tank, can also practice thrift high temperature fused salt storage tank infrastructure's cost simultaneously.
The utility model discloses adopt refractory castable to pour the cofferdam wall in the periphery of heat preservation thermal-insulated supporting layer, the top of cofferdam wall is higher than the top surface of heat preservation thermal-insulated supporting layer, and the cofferdam wall of adopting refractory castable to pour is provided valuable time for handling the fused salt leakage as the temporary storage facility of revealing the fused salt, can avoid the fused salt to leak all ring edge borders to realize essential safety, reduce the environmental protection risk.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-heat conduction layer, 2-heat insulation layer, 3-heat resistance layer, 4-bearing layer, 5-reinforced concrete foundation layer, 6-lower heat resistance layer, 7-upper heat resistance layer, 8-cofferdam wall and 9-ground.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1, the utility model provides a pair of multilayer combination formula high temperature fused salt storage tank heat preservation basis, moreover, the steam generator is simple in structure, design scientific and reasonable, high durability and convenient use, utilize the heat-resisting of multilayer performance difference, insulation material's integrated configuration removes the gross weight that bears whole fused salt storage tank itself and interior medium, with effective isolated high temperature fused salt to the influence on storage tank reinforced concrete basis, avoid high temperature to lead to supporting the concrete damage on storage tank basis and near the soil of basis to lead to the bearing capacity because of the high temperature to descend, in order to guarantee the safety of high temperature fused salt storage tank, reduce the damaged risk of revealing of high temperature fused salt storage tank, and then guarantee the safety of whole heat-retaining. The utility model comprises a reinforced concrete foundation layer 5 arranged on the ground 9 and a heat preservation and insulation supporting layer arranged on the reinforced concrete foundation layer 5; the heat-insulation supporting layer comprises a heat conduction layer 1 formed by pouring a heavy castable, a heat insulation layer 2 formed by pouring heat-insulation refractory bricks, a heat-resistant layer 3, a cofferdam wall 8 and a bearing layer 4 formed by pouring a high-strength castable, wherein the heat conduction layer 1, the heat insulation layer 2, the heat-resistant layer 3 and the bearing layer 4 are sequentially distributed from bottom to top, and the heat conduction layer 1 is poured on the reinforced concrete foundation layer 5.
Heat-resisting layer 3 is including adopting the light to insulate against heat lower floor's heat-resisting layer 6 that firebrick built to and adopt the light castable to pour in upper heat-resisting layer 7 on the heat-resisting layer 6 of lower floor, lower floor's heat-resisting layer 6 build in on the heat preservation 2, bearing layer 4 pour in on the heat-resisting layer 7 of upper strata. The reinforced concrete foundation bed 5 the heat-conducting layer 1 the heat preservation 2 lower floor's heat-resisting layer 6 upper heat-resisting layer 7 and the top surface of bearing layer 4 all is the level.
The utility model comprises a reinforced concrete foundation layer arranged on the ground and a heat preservation and insulation supporting layer arranged on the reinforced concrete foundation layer; the heat preservation and insulation support layer comprises a heat conduction layer poured by heavy castable, a heat preservation layer and a heat resistance layer which are built by heat insulation refractory bricks, and a bearing layer poured by high-strength castable. Utilize the combination of the different performance materials of multilayer to the high temperature in the high temperature molten salt storage tank is effectively completely cut off to the influence of reinforced concrete foundation layer, guarantees to support the reinforced concrete foundation layer of high temperature molten salt storage tank and stabilizes and the safety of high temperature molten salt storage tank. The utility model discloses the different performance of each layer of make full use of material, with bearing, heat-resisting, thermal-insulated, keep warm and heat transfer heat dissipation undertake respectively by each functional layer, can effectively reduce the damaged risk of revealing of high temperature fused salt storage tank, can also practice thrift high temperature fused salt storage tank infrastructure's cost simultaneously.
Cofferdam wall 8 adopts refractory castable to pour and forms, 8 circumference of cofferdam wall encircle the thermal-insulated supporting layer of heat preservation distributes. The top end of the cofferdam wall 8 is higher than the top surface of the bearing layer 4. The bottom end of the cofferdam wall 8 is poured on the reinforced concrete foundation layer 5.
The utility model discloses adopt refractory castable to pour the cofferdam wall in the periphery of heat preservation thermal-insulated supporting layer, the top of cofferdam wall is higher than the top surface of heat preservation thermal-insulated supporting layer, and the cofferdam wall of adopting refractory castable to pour is provided valuable time for handling the fused salt leakage as the temporary storage facility of revealing the fused salt, can avoid the fused salt to leak all ring edge borders to realize essential safety, reduce the environmental protection risk.
The utility model discloses the setting has adopted high strength pouring material, light thermal-insulated resistant firebrick, thermal-insulated firebrick, heavy weight pouring material from top to bottom in high temperature fused salt storage tank bottom as bearing layer, heat-resisting layer, heat preservation and heat-conducting layer respectively, selects coefficient of heat conductivity, intensity, thickness at each layer according to bearing capacity, coefficient of heat conductivity, fused salt temperature etc. of material to the temperature drop and the heat of control high temperature fused salt scatter and disappear in the allowed band. In addition, the cofferdam wall is poured around the heat preservation and heat insulation supporting layer and is formed by pouring refractory castable, and the top of the cofferdam wall is higher than the top surface of the heat preservation and heat insulation supporting layer and serves as a temporary storage facility for leaking high-temperature molten salt.
The utility model can effectively isolate the high temperature of the high temperature fused salt from conducting downwards and around, and can effectively avoid the influence of the high temperature on the common reinforced concrete foundation of the storage tank and the surrounding soil while reducing the heat loss; the ordinary reinforced concrete foundation of fused salt storage tank only needs to bear storage tank weight, need not bear high temperature, so can effectively guarantee the safe long period operation of fused salt storage tank, the cofferdam wall provides the valuable time for handling fused salt leakage, can effectively avoid the fused salt to leak all ring edge borders, has realized essential safety, has reduced the environmental protection risk.
The utility model has the advantages of simple structure and scientific and reasonable design, the practicality is strong, is suitable for and widely popularizes and applies in this technical field.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a multilayer combination formula high temperature fused salt storage tank heat preservation basis which characterized in that: the heat insulation support layer comprises a reinforced concrete foundation layer (5) arranged on the ground and a heat insulation support layer arranged on the reinforced concrete foundation layer (5); the heat-insulation supporting layer comprises a heat conduction layer (1) formed by pouring a heavy castable, a heat insulation layer (2) formed by pouring heat-insulation refractory bricks, a heat-resistant layer (3) and a bearing layer (4) formed by pouring a high-strength castable, wherein the heat conduction layer (1), the heat insulation layer (2), the heat-resistant layer (3) and the bearing layer (4) are sequentially distributed from bottom to top, and the heat conduction layer (1) is poured on the reinforced concrete base layer (5).
2. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 1, wherein: the heat-resistant layer (3) comprises a lower heat-resistant layer (6) built by light heat-insulating refractory bricks and an upper heat-resistant layer (7) poured on the lower heat-resistant layer (6) by light castable, the lower heat-resistant layer (6) is built on the heat-insulating layer (2), and the bearing layer (4) is poured on the upper heat-resistant layer (7).
3. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 2, wherein: the top surface of the reinforced concrete foundation layer (5) is horizontal.
4. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 3, wherein: the top surfaces of the heat conduction layer (1), the heat insulation layer (2) and the bearing layer (4) are all horizontal.
5. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 4, wherein: the top surfaces of the lower heat-resistant layer (6) and the upper heat-resistant layer (7) are horizontal.
6. The heat-insulating foundation of the multilayer combined high-temperature molten salt storage tank as claimed in any one of claims 1 to 5, wherein: still include cofferdam wall (8) that adopt refractory castable to pour and form, cofferdam wall (8) circumference encircles the heat preservation and insulation supporting layer distributes.
7. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 6, wherein: the top end of the cofferdam wall (8) is higher than the top surface of the bearing layer (4).
8. The heat-preservation foundation of the multilayer combined high-temperature molten salt storage tank as claimed in claim 7, wherein: and the bottom end of the cofferdam wall (8) is poured on the reinforced concrete foundation layer (5).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082194A (en) * | 2020-09-17 | 2020-12-15 | 东方电气集团东方锅炉股份有限公司 | Single-tank molten salt energy storage and heating system and energy storage and heating method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082194A (en) * | 2020-09-17 | 2020-12-15 | 东方电气集团东方锅炉股份有限公司 | Single-tank molten salt energy storage and heating system and energy storage and heating method thereof |
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