CN212431372U - High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress - Google Patents
High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress Download PDFInfo
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- CN212431372U CN212431372U CN202021162201.9U CN202021162201U CN212431372U CN 212431372 U CN212431372 U CN 212431372U CN 202021162201 U CN202021162201 U CN 202021162201U CN 212431372 U CN212431372 U CN 212431372U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
High temperature fused salt storage tank that can freely stretch out and draw back release thermal stress, which comprises a tank body, the bottom plate of the jar body is cone angle toper up, the middle part of jar body below is equipped with the sand bed course that the grit was filled and is formed, the upper portion of sand bed course is cone angle toper body up, the below of sand bed course is equipped with the bottom plate that leaks hunting, be equipped with the thermocouple that a plurality of temperature measurement were used on the bottom plate that leaks hunting, a plurality of thermocouples are connected with the electrical control device electricity respectively, the outside edge department of the bottom plate that leaks hunting encircles and is equipped with the collecting tank, the lower part of collecting tank links to each other with. Its aim at provides one kind can effectively guarantee the free flexible of storage tank, release thermal stress to guarantee the operation safety of storage tank, and can in time discover fused salt leakage phenomenon, retrieve the fused salt of leaking, avoid causing the high temperature fused salt storage tank of the flexible release thermal stress that freely of pollution to the environment.
Description
Technical Field
The invention relates to the field of solar photo-thermal power generation, in particular to a high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress.
Background
One challenge in using renewable energy sources, particularly solar energy, is to deal with the intermittent nature of the energy supply caused by weather, diurnal solar fluctuations, and seasonal variations, and one way to effectively manage the variability of solar energy resources is to add thermal energy storage devices to them, store the varying energy when there is excess power, and then release the stored energy when the solar energy is producing insufficient or no power, thereby achieving the need for a continuous power supply.
The solar heat storage technology mainly adopts a molten salt storage tank, and at present, the design of a basic structure at the bottom of the molten salt storage tank is a difficult point in the field. The stability and heat insulation of the molten salt storage tank are important factors for the basic design consideration. The bottom plate of fused salt storage tank is direct and concrete ring wall contact usually high temperature fused salt storage tank foundation structure, and the coefficient of friction of such structure contact surface is great, is unfavorable for the free flexible of fused salt storage tank, causes the fracture of bottom plate and wallboard junction wide-angle welding seam moreover easily, has very big hidden danger to the security of storage tank.
In addition, the fused salt storage tank still has the leakage phenomenon, causes the unable normal use of fused salt storage tank to cause serious pollution to the environment, how to detect the fused salt leakage fast, be the problem that this field is key at present about.
Disclosure of Invention
The invention aims to provide a high-temperature molten salt storage tank which can effectively ensure free expansion and contraction of a storage tank and release thermal stress, thereby ensuring the operation safety of the storage tank, finding out the molten salt leakage phenomenon in time, recycling the leaked molten salt and avoiding polluting the environment.
The invention relates to a high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress, which comprises a tank body, wherein a bottom plate of the tank body is in a conical shape with an upward conical angle, a sand cushion layer formed by filling sand is arranged in the middle of the lower part of the tank body, the upper part of the sand cushion layer is in a conical body with an upward conical angle, a leakage detection bottom plate is arranged below the sand cushion layer, a plurality of thermocouples for temperature measurement are arranged on the leakage detection bottom plate and are respectively and electrically connected with an electrical control device, a liquid collecting tank is arranged at the outer edge of the leakage detection bottom plate in a surrounding manner, the lower part of the liquid collecting tank is connected with;
a heat insulation layer is arranged below the leakage detection bottom plate, a heat dissipation layer is arranged below the heat insulation layer, a plurality of ventilation pipes are arranged in the heat dissipation layer, a sand filling layer is arranged below the heat dissipation layer, and a concrete supporting layer is arranged below the sand filling layer;
an annular high-temperature-resistant concrete outer wall is arranged on the outer side of the top end of the concrete supporting layer, an annular heat-insulating layer is arranged in the high-temperature-resistant concrete outer wall, an annular refractory brick inner wall is arranged in the annular heat-insulating layer, and the outer side wall of the sand cushion layer, the outer side wall of the liquid collecting tank, the outer side wall of the heat-insulating layer, the outer side wall of the heat-radiating layer and the outer side wall of the gravel filling layer are respectively attached to the inner wall of the;
the top of high temperature resistant concrete outer wall is equipped with annular bottom plate, and the face of bottom plate is located the horizontal direction, and the lower terminal surface of bottom plate pastes mutually with the inboard on high temperature resistant concrete outer wall top, the top of annular insulating layer and the top of resistant firebrick inner wall, the outside of the lower terminal surface of the jar body pastes mutually with the outside on bottom plate top, and the bottom plate suit is in the ring baffle, and the lower part of ring baffle links to each other with high temperature resistant concrete outer wall is fixed.
Preferably, the leakage detection bottom plate is in a shape with an upward convex middle part and a downward concave periphery.
Preferably, the horizontal sections of the high-temperature-resistant concrete outer wall, the annular heat insulation layer, the refractory brick inner wall and the tank body are respectively circular.
Preferably, the sump is rectangular in cross-section.
Preferably, the lower part of the liquid collecting tank is connected with liquid inlets of 4-16 liquid discharge pipes.
Preferably, a steel mesh is arranged at the port of the ventilation pipe.
When the membrane polar distance ion membrane electrolytic cell buffer network is used, once a thermocouple for temperature measurement arranged on the leakage detection bottom plate detects that the temperature is abnormal, the leakage of the molten salt in the tank body is indicated, so that the molten salt leakage phenomenon can be quickly detected, and time is gained for taking relevant emergency measures. The invention can also collect the leaked molten salt for further utilization through the salt discharge pipe and the molten salt collecting tank. In addition, the tank body is arranged on the bottom plate, and the sand cushion layer formed by filling sand is arranged in the middle of the lower portion of the tank body, so that the friction coefficient of a contact surface at the bottom of the tank body is reduced, the tank body can freely expand with heat and contract with cold, the thermal stress borne by the storage tank is effectively released, and the excessive local stress generated at a large-angle welding seam between the tank body bottom plate and the wall plate is avoided, and the safety of the storage tank is ensured. If the tank body has a displacement phenomenon, the annular baffle can effectively block the tank body, and the tank body is prevented from continuously deviating towards a single side. Therefore, the high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress has the characteristics that the thermal stress borne by the storage tank can be effectively released, the excessive local stress generated by the tank body is avoided, the safety of the storage tank is ensured, the molten salt leakage phenomenon can be found in time, the leaked molten salt is recovered, and the environmental pollution is avoided.
The invention is described in detail below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a front view of a schematic structural diagram of a high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress according to the invention;
fig. 2 is a schematic cross-sectional view of the high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress along the horizontal direction of the thermocouple.
Detailed Description
As shown in fig. 1 and 2, the high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress comprises a tank body 10, wherein a bottom plate of the tank body 10 is conical with an upward cone angle, a sand cushion layer 5 formed by filling sand is arranged in the middle of the lower part of the tank body 10, the upper part of the sand cushion layer 5 is conical with an upward cone angle, a leakage detection bottom plate 11 is arranged below the sand cushion layer 5, a plurality of thermocouples 14 for measuring temperature are arranged on the leakage detection bottom plate 11, the thermocouples 14 are respectively and electrically connected with an electric control device, a liquid collection tank 13 is arranged at the outer edge of the leakage detection bottom plate 11 in a surrounding manner, the lower part of the liquid collection tank 13 is connected with a liquid inlet of a liquid discharge pipe 15, and;
a heat insulation layer 6 is arranged below the leakage detection bottom plate 11, a heat dissipation layer 7 is arranged below the heat insulation layer 6, a plurality of ventilation pipes 16 are arranged in the heat dissipation layer 7, a sand filling layer 8 is arranged below the heat dissipation layer 7, and a concrete supporting layer 9 is arranged below the sand filling layer 8;
an annular high-temperature-resistant concrete outer wall 2 is arranged on the outer side of the top end of the concrete supporting layer 9, an annular heat-insulating layer 3 is arranged in the high-temperature-resistant concrete outer wall 2, an annular refractory brick inner wall 4 is arranged in the annular heat-insulating layer 3, and the outer side wall of the sand cushion layer 5, the outer side wall of the liquid collecting tank 13, the outer side wall of the heat-insulating layer 6, the outer side wall of the heat-radiating layer 7 and the outer side wall of the sandstone filling layer 8 are respectively attached to the inner wall of the refractory brick;
the top of high temperature resistant concrete outer wall 2 is equipped with annular bottom plate 1, and the face of bottom plate 1 is located the horizontal direction, and the lower terminal surface of bottom plate 1 pastes mutually with the inboard on 2 tops of high temperature resistant concrete outer wall, the top of annular insulating layer 3 and the top of resistant firebrick inner wall 4, the outside on the lower terminal surface of jar body 10 pastes mutually with the outside on 1 top of bottom plate, and bottom plate 1 suit is in annular baffle 12, and the lower part of annular baffle 12 links to each other with high temperature resistant concrete outer wall 2 is fixed.
The bottom plate 1 is arranged at the bottom of the tank body 10 of the molten salt storage tank, the annular baffle plate 12 is embedded into the high-temperature-resistant concrete outer wall 2, the outer annular surface of the bottom plate of the tank body 10 is in contact with the plane of the bottom plate 1, so that the sliding friction coefficient is small, the lower layer of the tank body 10 is the sand cushion 5 which is formed by laying coarse sand and fine sand in a mixed mode, and the upper portion of the sand cushion 5 is a conical body with an upward conical angle, so that the effects of stabilizing the tank body 10 and insulating heat can be. The high-temperature-resistant concrete outer wall 2 can prevent the foundation from still bearing the high-temperature molten salt at the temperature of nearly 600 ℃ once a large amount of molten salt is leaked, and the danger of overturning the storage tank can not occur.
As a further improvement of the present invention, the bottom leakage detecting plate 11 has a shape with a convex middle portion and a concave periphery.
As a further improvement of the invention, the horizontal sections of the high-temperature resistant concrete outer wall 2, the annular heat insulation layer 3, the refractory brick inner wall 4 and the tank body 10 are respectively circular.
In a further improvement of the present invention, the cross section of the sump 13 is rectangular.
As a further improvement of the invention, the lower part of the liquid collecting tank 13 is connected with liquid inlets of 4-16 liquid discharge pipes 15.
As a further improvement of the present invention, a steel net is provided at the port of the ventilation tube 16. The purpose of the steel mesh is to prevent small animals from digging into it.
When the membrane polar distance ion membrane electrolytic cell buffer network is used, once the thermocouple 14 for temperature measurement arranged on the leakage detection bottom plate 11 detects that the temperature is abnormal, the leakage of the molten salt in the tank body 10 is indicated, so that the molten salt leakage phenomenon can be quickly detected, and time is saved for taking relevant emergency measures. The invention can also collect and utilize leaked molten salt through the salt discharge pipe 7 and the molten salt collecting tank 8. In addition, the tank body 10 is arranged on the bottom plate 1, and the sand cushion layer 5 formed by filling sand is arranged in the middle of the lower portion of the tank body 10, so that the friction coefficient of a contact surface at the bottom of the tank body 10 is reduced, the tank body 10 can freely expand with heat and contract with cold, the thermal stress borne by the storage tank is effectively released, and the excessive local stress generated at the large-angle welding seam of the bottom plate of the tank body 10 and a wall plate is avoided, so that the safety of the storage tank is ensured. If the tank 10 is displaced, the annular baffle 12 can effectively block the tank 10 to prevent the tank 10 from continuously shifting toward a single side. Therefore, the high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress has the characteristics that the thermal stress borne by the storage tank can be effectively released, the excessive local stress generated by the tank body is avoided, the safety of the storage tank is ensured, the molten salt leakage phenomenon can be found in time, the leaked molten salt is recovered, and the environmental pollution is avoided.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. High temperature fused salt storage tank that can freely stretch out and draw back release thermal stress, characterized by: the temperature-measuring tank comprises a tank body (10), wherein a bottom plate of the tank body (10) is conical with an upward conical angle, a sand cushion layer (5) formed by filling sand is arranged in the middle below the tank body (10), the upper part of the sand cushion layer (5) is a conical body with an upward conical angle, a leakage-detecting bottom plate (11) is arranged below the sand cushion layer (5), a plurality of thermocouples (14) for measuring temperature are arranged on the leakage-detecting bottom plate (11), the thermocouples (14) are respectively and electrically connected with an electrical control device, a liquid collecting tank (13) is arranged at the outer edge of the leakage-detecting bottom plate (11) in a surrounding manner, the lower part of the liquid collecting tank (13) is connected with a liquid inlet of a liquid discharge pipe (15);
a heat insulation layer (6) is arranged below the leakage detection bottom plate (11), a heat dissipation layer (7) is arranged below the heat insulation layer (6), a plurality of ventilation pipes (16) are arranged in the heat dissipation layer (7), a sand filling layer (8) is arranged below the heat dissipation layer (7), and a concrete support layer (9) is arranged below the sand filling layer (8);
an annular high-temperature-resistant concrete outer wall (2) is arranged on the outer side of the top end of the concrete supporting layer (9), an annular heat-insulating layer (3) is arranged in the high-temperature-resistant concrete outer wall (2), an annular refractory brick inner wall (4) is arranged in the annular heat-insulating layer (3), and the outer side wall of the sand cushion layer (5), the outer side wall of the liquid collecting tank (13), the outer side wall of the heat-insulating layer (6), the outer side wall of the heat-radiating layer (7) and the outer side wall of the sand filling layer (8) are respectively attached to the inner wall of the refractory brick inner wall (;
the top of high temperature resistant concrete outer wall (2) is equipped with annular bottom plate (1), and the face of bottom plate (1) is located the horizontal direction, and the lower terminal surface of bottom plate (1) pastes mutually with the inboard on high temperature resistant concrete outer wall (2) top, the top of annular insulating layer (3) and the top of resistant firebrick inner wall (4), the outside of the lower terminal surface of the jar body (10) pastes mutually with the outside on bottom plate (1) top, and bottom plate (1) suit is in annular baffle (12), and the lower part of annular baffle (12) links to each other with high temperature resistant concrete outer wall (2) is fixed.
2. The high-temperature molten salt storage tank capable of freely and telescopically releasing thermal stress as claimed in claim 1, wherein: the leakage detection bottom plate (11) is in a shape that the middle part is upwards convex and the periphery is downwards concave.
3. The high-temperature molten salt storage tank capable of freely and telescopically releasing thermal stress as claimed in claim 2, wherein: the horizontal sections of the high-temperature resistant concrete outer wall (2), the annular heat insulation layer (3), the refractory brick inner wall (4) and the tank body (10) are respectively circular.
4. The high-temperature molten salt storage tank capable of freely and telescopically releasing thermal stress as claimed in claim 3, wherein: the cross section of the liquid collecting groove (13) is rectangular.
5. The high-temperature molten salt storage tank capable of freely and telescopically releasing thermal stress as claimed in claim 4, wherein: the lower part of the liquid collecting groove (13) is connected with liquid inlets of 4-16 liquid discharge pipes (15).
6. A high-temperature molten salt storage tank capable of freely stretching and releasing thermal stress as claimed in any one of claims 1 to 5, characterized in that: and a steel mesh is arranged at the port of the ventilation pipe (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021162201.9U CN212431372U (en) | 2020-06-20 | 2020-06-20 | High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress |
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| CN202021162201.9U CN212431372U (en) | 2020-06-20 | 2020-06-20 | High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress |
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| CN212431372U true CN212431372U (en) | 2021-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819663A (en) * | 2020-06-20 | 2021-12-21 | 蓝星(北京)化工机械有限公司 | High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819663A (en) * | 2020-06-20 | 2021-12-21 | 蓝星(北京)化工机械有限公司 | High-temperature molten salt storage tank capable of freely stretching and releasing thermal stress |
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