CN218880932U - High temperature fused salt storage tank heat preservation basis - Google Patents
High temperature fused salt storage tank heat preservation basis Download PDFInfo
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- CN218880932U CN218880932U CN202222844463.9U CN202222844463U CN218880932U CN 218880932 U CN218880932 U CN 218880932U CN 202222844463 U CN202222844463 U CN 202222844463U CN 218880932 U CN218880932 U CN 218880932U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a high temperature fused salt storage tank heat preservation basis includes reinforced concrete layer, heat preservation, resistant deformation layer, its characterized in that from bottom to supreme in proper order: the diameter of the deformation-resistant layer is larger than that of the storage tank, and the diameters of the deformation-resistant layer, the heat-insulating layer and the reinforced concrete layer are gradually increased; a plurality of parallel ventilation pipes are arranged in the reinforced concrete layer, and two ends of each ventilation pipe extend out of the ground from the reinforced concrete layer; the air inlet and the air outlet of the ventilating pipe are distributed in a staggered manner; the outer wall of the heat-insulating layer is provided with an annular steel plate, and an annular waterproof coiled material is arranged at the contact position of the annular steel plate and the upper surface of the reinforced concrete layer; the deformation-resistant layer comprises a fine sand layer and a gravel ring beam arranged on the periphery of the fine sand layer, and the thickness of the gravel ring beam is larger than that of the fine sand layer. The utility model can ensure the temperature distribution in the foundation to be more uniform on the premise of ensuring the heat preservation performance of the foundation; and has a certain degree of self-adaptive capacity to the storage tank vibration caused by thermal shock.
Description
Technical Field
The utility model relates to a fused salt energy storage technical field especially relates to a high temperature fused salt storage tank heat preservation basis.
Background
The fused salt heat storage system is an important part of a photo-thermal power station for meeting the supply and demand relationship, so that the photo-thermal power station can provide continuous and schedulable electric power for a power grid, and the technology is not only applied to a photo-thermal power generation technology, but also widely applied to multiple fields of industrial production, central heating and the like.
The double-tank type molten salt heat storage system comprises a plurality of parts, including a heat storage medium molten salt, a wall surface of a storage tank, a heat insulation layer on the wall surface of the storage tank and a storage tank foundation at the bottom, and heat loss can inevitably occur in each part due to temperature difference between the molten salt in the storage tank and the external environment.
The tank foundations typically comprise multiple layers of insulation and cast concrete with a ventilation system that ensures that the concrete temperature is below the maximum allowable temperature. Since the tank is susceptible to settling deformation of the foundation, there is a need for adequate overall stability, uniformity and planar bending stiffness, while reducing heat loss from the bottom of the tank and providing a reasonable temperature distribution within the foundation.
The existing storage tank foundation mainly has the following problems:
1. the temperature difference of the air inlet and the air outlet of the ventilation system causes the uneven temperature distribution in the foundation;
2. the self-adaptive capacity to the vibration of the storage tank caused by thermal shock is lacked, and the local uneven settlement of the foundation is easily caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, a high temperature storage tank basis that inside temperature distribution is reasonable, the heat waste is little, support intensity is high is provided, the utility model provides a following technical scheme:
a high-temperature molten salt storage tank heat preservation foundation sequentially comprises a reinforced concrete layer, a heat preservation layer and a deformation-resistant layer from bottom to top, wherein the diameter of the deformation-resistant layer is larger than that of a storage tank, and the diameters of the deformation-resistant layer, the heat preservation layer and the reinforced concrete layer are gradually increased;
a plurality of parallel ventilation pipes are arranged in the reinforced concrete layer, and two ends of each ventilation pipe extend out of the ground from the reinforced concrete layer; the air inlet and the air outlet of the ventilating pipe are distributed in a staggered manner;
the outer wall of the heat-insulating layer is provided with an annular steel plate, and an annular waterproof coiled material is arranged at the contact position of the annular steel plate and the upper surface of the reinforced concrete layer;
the deformation-resistant layer comprises a fine sand layer and a gravel ring beam arranged on the periphery of the fine sand layer, and the thickness of the gravel ring beam is larger than that of the fine sand layer.
Further, the heat-insulating layer is a ceramsite layer.
Furthermore, a buffer disc in the horizontal direction is arranged in the heat insulation layer, and the buffer disc is made by filling high-temperature-resistant soft rubber with broken stones serving as a framework. The buffer disc can be arranged in the middle of the heat-insulating layer, high-strength ceramsite is selected below the buffer disc, and common ceramsite is selected above the buffer disc. The vibration damping device can play a role in buffering vibration caused by cyclic thermal shock of the storage tank to a certain extent, and is used for protecting the integrity and functionality of the foundation and preventing the foundation from being partially unevenly settled; the high-strength ceramsite is selected below to mainly play a strong supporting role for the buffer disc.
Furthermore, the slope of the upper surface of the buffer disc is the same as that of the bottom of the storage tank, and the diameter of the buffer disc is larger than the inner diameter of the gravel ring beam.
The sensor group I is arranged at the bottom of the reinforced concrete layer, and the sensor group II is arranged in the heat insulation layer;
the first sensor group comprises at least three temperature sensors and is distributed on the same horizontal plane at the bottom of the reinforced concrete layer in an annular array mode; the sensor group I is used for monitoring the temperature of the bottom of the reinforced concrete layer, and introducing cold air into the ventilation pipe in time according to the temperature of the sensor group I so as to prevent the reinforced concrete layer from exceeding the allowable working temperature.
The second sensor group comprises at least three temperature sensors which are distributed equidistantly in the vertical direction of the heat preservation layer. And the second sensor group is used for monitoring the temperature difference of different heights of the heat preservation layer.
Furthermore, the first sensor group and the second sensor group are both wired sensors and extend out of a manhole to be connected with a control system; the cables of the wired sensors extend out of the foundation through metal sleeves, the metal sleeve of the first sensor group is fixedly connected with the annular steel plate, and the metal sleeve of the second sensor group is poured in a reinforced concrete layer in advance. The metal sleeve is used for fixing the position of the temperature sensor.
The beneficial effects of the utility model reside in that:
1. on the premise of ensuring the heat preservation performance of the foundation, the temperature distribution in the foundation is more uniform;
2. the self-adaptive energy storage tank vibration caused by thermal shock has self-adaptive capacity, and the uneven settlement of the layout caused by the thermal shock can be avoided to a certain extent.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic diagram of the main structure of an embodiment of the present invention;
FIG. 3 is a schematic view of the main structure of another embodiment of the present invention;
fig. 4 is a schematic view of the arrangement of the ventilation pipe of the present invention.
In the figure: 1. the device comprises a reinforced concrete layer, 2 a heat insulation layer, 21 an annular steel plate, 22 an annular waterproof coiled material, 23 a buffer disc, 31 a fine sand layer, 32 a gravel annular beam, 4 a ventilation pipe, 51 a sensor group I, 52 a sensor group II, 53 a metal sleeve, 100 and a storage tank.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Examples 1,
The heat preservation foundation of the high-temperature molten salt storage tank 100 shown in fig. 1-2 sequentially comprises a reinforced concrete layer 1, a heat preservation layer 2 and a deformation-resistant layer from bottom to top, wherein the diameter of the deformation-resistant layer is larger than that of the storage tank 100, and the diameters of the deformation-resistant layer, the heat preservation layer 2 and the reinforced concrete layer 1 are gradually increased;
a plurality of parallel ventilation pipes 4 are arranged in the reinforced concrete layer 1, and two ends of each ventilation pipe 4 extend out of the ground from the reinforced concrete layer 1; the air inlets and the air outlets of the ventilating pipes 4 are distributed in a staggered manner, the number of the ventilating pipes 4 is determined according to parameters such as the diameter of the storage tank 100, the working temperature and the like, generally, one ventilating pipe 4 is arranged at intervals of 70-90cm, and the directions of the air inlets and the air outlets of the adjacent ventilating pipes 4 are opposite;
the heat-insulating layer 2 is a ceramsite layer, the outer wall of the heat-insulating layer is provided with an annular steel plate 21, and the contact position of the annular steel plate 21 and the upper surface of the reinforced concrete layer 1 is provided with an annular waterproof coiled material 22; the thickness of the insulating layer 2 is determined according to the volume and weight of the storage tank 100, the type of heat storage medium, the working temperature and the like, and is generally 2 times of the thickness of the reinforced concrete layer 1.
The deformation-resistant layer comprises a fine sand layer 31 and a gravel ring beam 32 arranged on the periphery of the fine sand layer 31, and the thickness of the gravel ring beam 32 is larger than that of the fine sand layer 31 and is generally 2-3 times of that of the fine sand layer 31.
A first sensor group 51 is arranged at the bottom of the reinforced concrete layer 1, and a second sensor group 52 is arranged in the insulating layer 2;
the first sensor group 51 comprises three temperature sensors and is distributed on the same horizontal plane at the bottom of the reinforced concrete layer 1 in an annular array mode; the sensor group I51 is used for monitoring the temperature of the bottom of the reinforced concrete layer 1, and introducing cold air into the ventilation pipe 4 in time according to the temperature of the sensor group I, so that the reinforced concrete layer 1 is prevented from exceeding the allowable working temperature.
The second sensor group 52 comprises three temperature sensors, which are distributed equidistantly in the vertical direction of the heat insulation layer 2. The second sensor group 52 is used for monitoring the temperature difference of different heights of the insulating layer 2.
The first sensor group 51 and the second sensor group 52 both adopt wired sensors and are connected with a control system through manhole extension; the cables of the wired sensors all extend out of the foundation through the metal sleeve 53, the metal sleeve 53 of the first sensor group 51 is fixedly connected with the annular steel plate 21, and the metal sleeve 53 of the second sensor group 52 is poured in the reinforced concrete layer 1 in advance. The metal sleeve 53 is used to fix the position of the temperature sensor. The data transmission of the wired sensor is more reliable, and the wired sensor is more suitable for the condition that the system needs to operate for a long time.
Examples 2,
A buffer disc 23 is horizontally arranged in the middle of an insulating layer 2 of the storage tank 100 foundation in embodiment 1, and the buffer disc 23 is made of broken stones serving as a framework and filled with high-temperature-resistant soft rubber. The high-strength ceramsite is selected from the lower part of the buffer disc 23, the common ceramsite is selected from the upper part of the buffer disc 23, and the diameter of the buffer disc 23 is larger than the inner diameter of the gravel ring beam 32 and the radius of the buffer disc is smaller than the horizontal distance from the second sensor group 52 to the center of the foundation.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a high temperature fused salt storage tank heat preservation basis includes reinforced concrete layer, heat preservation, resistant layer that warp from bottom to top in proper order, its characterized in that: the diameter of the deformation-resistant layer is larger than that of the storage tank, and the diameters of the deformation-resistant layer, the heat-insulating layer and the reinforced concrete layer are gradually increased;
a plurality of parallel ventilation pipes are arranged in the reinforced concrete layer, and two ends of each ventilation pipe extend out of the ground from the reinforced concrete layer; the air inlet and the air outlet of the ventilating pipe are distributed in a staggered manner;
the outer wall of the heat-insulating layer is provided with an annular steel plate, and an annular waterproof coiled material is arranged at the contact position of the annular steel plate and the upper surface of the reinforced concrete layer;
the deformation-resistant layer comprises a fine sand layer and a gravel ring beam arranged on the periphery of the fine sand layer, and the thickness of the gravel ring beam is larger than that of the fine sand layer.
2. The high-temperature molten salt storage tank heat preservation foundation of claim 1, characterized in that: the heat-insulating layer is a ceramsite layer.
3. The high-temperature molten salt storage tank heat preservation foundation of claim 1, characterized in that: a buffer disc in the horizontal direction is arranged in the heat-insulating layer, and the buffer disc is made by filling high-temperature-resistant soft rubber with broken stones serving as a framework; high-strength ceramsite is filled below the buffer disc, and common ceramsite is filled above the buffer disc.
4. The high-temperature molten salt storage tank heat preservation foundation of claim 3, characterized in that: the slope of the upper surface of the buffer disc is the same as that of the bottom of the storage tank, and the diameter of the buffer disc is larger than the inner diameter of the gravel ring beam.
5. The high-temperature molten salt storage tank heat preservation foundation of claim 1, characterized in that: the sensor group I is arranged at the bottom of the reinforced concrete layer, and the sensor group II is arranged in the heat insulation layer;
the first sensor group comprises at least three temperature sensors and is distributed on the same horizontal plane at the bottom of the reinforced concrete layer in an annular array mode;
the second sensor group comprises at least three temperature sensors which are distributed equidistantly in the vertical direction of the heat preservation layer.
6. The high-temperature molten salt storage tank heat preservation foundation of claim 5, characterized in that: the first sensor group and the second sensor group both adopt wired sensors and are connected with a control system through manhole extension; the cables of the wired sensors extend out of the foundation through metal sleeves, the metal sleeve of the first sensor group is fixedly connected with the annular steel plate, and the metal sleeve of the second sensor group is poured in a reinforced concrete layer in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222844463.9U CN218880932U (en) | 2022-10-26 | 2022-10-26 | High temperature fused salt storage tank heat preservation basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222844463.9U CN218880932U (en) | 2022-10-26 | 2022-10-26 | High temperature fused salt storage tank heat preservation basis |
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| Publication Number | Publication Date |
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| CN218880932U true CN218880932U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222844463.9U Active CN218880932U (en) | 2022-10-26 | 2022-10-26 | High temperature fused salt storage tank heat preservation basis |
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- 2022-10-26 CN CN202222844463.9U patent/CN218880932U/en active Active
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