CN217716066U - Molten salt storage device and molten salt heat storage system - Google Patents
Molten salt storage device and molten salt heat storage system Download PDFInfo
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- CN217716066U CN217716066U CN202221186887.4U CN202221186887U CN217716066U CN 217716066 U CN217716066 U CN 217716066U CN 202221186887 U CN202221186887 U CN 202221186887U CN 217716066 U CN217716066 U CN 217716066U
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- 150000003839 salts Chemical class 0.000 title claims abstract description 516
- 238000005338 heat storage Methods 0.000 title claims description 15
- 238000004891 communication Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000008676 import Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The embodiment of the utility model provides a fused salt storage device and fused salt heat-retaining system, wherein the fused salt storage device includes the fused salt jar body, fused salt pump box and connecting pipe. The molten salt tank body is provided with a first molten salt storage cavity, a first molten salt inlet communicated with the first molten salt storage cavity and a molten salt outlet, and the molten salt outlet is formed in the bottom of the first molten salt storage cavity. The molten salt pump box is provided with a second molten salt storage cavity and a second molten salt inlet communicated with the second molten salt storage cavity. One end of the connecting pipe is communicated with the molten salt outlet, and the other end of the connecting pipe is communicated with the second molten salt inlet. The utility model discloses a setting sets up the fused salt pump case, has avoided adopting the major axis fused salt pump to carry the fused salt from this. Compare the traditional mode that adopts major axis molten salt pump, the utility model provides a molten salt storage device has the characteristics that the cost of manufacture is low and the fault rate is low.
Description
Technical Field
The utility model belongs to fused salt heat-retaining field, concretely relates to fused salt storage device and fused salt heat-retaining system.
Background
In the related art, a large-scale molten salt heat storage system generally stores high-temperature molten salt and low-temperature molten salt by using two molten salt tank bodies respectively, or stores the high-temperature molten salt and the low-temperature molten salt simultaneously by using a single molten salt storage device.
Because single jar fused salt heat-storage system's low temperature fused salt often stores in fused salt storage device's bottom, fused salt storage device's height is higher relatively simultaneously, and low temperature fused salt pump often sets up at the top of jar body, consequently needs adopt major axis fused salt pump to pump low temperature fused salt. However, as the shaft length of the molten salt pump increases, the manufacturing difficulty and manufacturing cost of the long-shaft molten salt pump increase, so that the price of the long-shaft molten salt pump is higher than that of the short-shaft molten salt pump, and the manufacturing cost of the single-tank molten salt heat storage system is higher. The long-shaft molten salt pump has the advantages that the long-shaft molten salt pump is short in service life and high in failure rate due to the complex structure, and needs to be replaced frequently, so that the single-tank molten salt heat storage system cannot run stably for a long time.
Meanwhile, in part of the double-tank molten salt heat storage systems in the related art, the high-temperature molten salt tank and the low-temperature molten salt tank usually adopt a long-shaft molten salt pump to pump the molten salt at the bottom of the molten salt storage device, so that the problems are also caused.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
Therefore, the embodiment of the utility model provides a fused salt storage device, the cost of manufacture that can effectual reduction fused salt storage device and fused salt heat-retaining system with show the operating stability who improves fused salt storage device and fused salt heat-retaining system.
The utility model discloses fused salt storage device includes the fused salt jar body, fused salt pump case and connecting pipe. The molten salt jar body have first molten salt store the chamber and with first molten salt import and the molten salt export of first molten salt storage chamber intercommunication, the molten salt export is seted up the bottom in first molten salt storage chamber. The molten salt pump box is provided with a second molten salt storage cavity and a second molten salt inlet communicated with the second molten salt storage cavity. One end of the connecting pipe is communicated with the molten salt outlet, and the other end of the connecting pipe is communicated with the second molten salt inlet.
In some embodiments, the second molten salt inlet opens at a bottom of the second molten salt storage cavity.
In some embodiments, the connector further comprises a switching valve disposed on the connection pipe.
In some embodiments, the molten salt storage device further comprises a level gauge for detecting a level of molten salt within the second molten salt storage cavity, at least a portion of the level gauge being located within the second molten salt storage cavity.
In some embodiments, the upper end face of the second molten salt storage cavity is located below the upper end face of the first molten salt storage cavity.
In some embodiments, the molten salt storage device further comprises a plurality of flow equalizing pieces, the flow equalizing pieces are arranged in the molten salt tank body and connected with the inner wall of the molten salt tank body, and the first molten salt inlet and the molten salt outlet are respectively connected with the corresponding flow equalizing pieces.
In some embodiments, the flow straightener includes a main pipe and a plurality of branch pipes, one end of which is connected to the main pipe.
In some embodiments, the port of the end of the branch pipe far away from the main pipe is provided with a filter screen.
The embodiment of the utility model provides a fused salt heat-retaining system is still provided, a fused salt heat-retaining system includes fused salt storage device, high temperature fused salt pump, exothermic unit, low temperature fused salt pump and fills the thermal unit.
The molten salt storage device is the molten salt storage device, wherein the first molten salt inlet comprises a low-temperature molten salt inlet and a high-temperature molten salt inlet, and the high-temperature molten salt inlet is located above the low-temperature molten salt inlet.
And the inlet of the high-temperature molten salt pump is positioned at the upper part of the first molten salt storage cavity of the molten salt storage device.
The heat release unit is provided with a hot side inlet and a cold side outlet, the hot side inlet is communicated with the outlet of the high-temperature molten salt pump, and the hot side outlet is communicated with the low-temperature molten salt inlet.
And the inlet of the low-temperature molten salt pump is positioned at the upper part of the second molten salt storage cavity of the molten salt storage device.
The heat filling unit is provided with a cold side inlet and a hot side outlet, the cold side inlet is communicated with the outlet of the low-temperature molten salt pump, and the cold side outlet is communicated with the high-temperature molten salt inlet.
Or the molten salt heat storage system comprises a high-temperature molten salt storage device, a high-temperature molten salt pump, a low-temperature molten salt storage device, a low-temperature molten salt pump, a heat release unit and a heat charging unit.
The high-temperature molten salt storage device is the molten salt storage device, wherein the first molten salt inlet is a high-temperature molten salt inlet;
the inlet of the high-temperature molten salt pump is communicated with the second molten salt storage cavity of the high-temperature molten salt storage device;
the low-temperature molten salt storage device is the molten salt storage device, wherein the first molten salt inlet is a low-temperature molten salt inlet;
and the inlet of the low-temperature molten salt pump is communicated with the second molten salt storage cavity of the low-temperature molten salt storage device.
The heat release unit is provided with a hot side inlet and a cold side outlet, the hot side inlet is communicated with the outlet of the high-temperature molten salt pump, and the hot side outlet is communicated with the first molten salt inlet of the low-temperature molten salt storage device; and
the heat filling unit is provided with a cold side inlet and a hot side outlet, the cold side inlet is communicated with the outlet of the low-temperature molten salt pump, and the hot side outlet is communicated with the first molten salt inlet of the high-temperature molten salt storage device.
In some embodiments, the low temperature molten salt pump and the high temperature molten salt pump are both short shaft submerged pumps.
Drawings
Fig. 1 is a schematic structural diagram of a molten salt storage thermal system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a molten salt storage thermal system according to another embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a flow equalizing member in a molten salt storage device according to an embodiment of the present invention;
fig. 4 is an installation schematic diagram of a filter screen in a molten salt storage device according to an embodiment of the present invention.
Reference numbers:
100. a molten salt storage device; 200. a molten salt heat storage system;
1. a molten salt tank body; 101. a first molten salt storage chamber; 102. a first molten salt inlet; 103. a molten salt outlet; 2. a molten salt pump box; 201. a second molten salt storage cavity; 202. a second molten salt inlet; 3. a connecting pipe; 4. An on-off valve; 5. a liquid level meter; 6. a flow equalizing member; 7. a main tube; 8. a branch pipe; 9. a filter screen; 10. a high temperature molten salt pump; 11. a heat release unit; 111. a hot side inlet; 112. a cold side outlet; 12. a low temperature molten salt pump; 13. A heat charging unit; 131. a cold side inlet; 132. a hot side outlet; 14. a high temperature molten salt storage device; 15. low temperature fused salt storage device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
A molten salt storage apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1.
As shown in fig. 1, a molten salt storage apparatus 100 according to an embodiment of the present invention includes a molten salt tank 1, a molten salt pump box 2, and a connection pipe 3. The molten salt tank body 1 is provided with a first molten salt storage cavity 101, and a first molten salt inlet 102 and a molten salt outlet 103 which are communicated with the first molten salt storage cavity 101, wherein the molten salt outlet 103 is arranged at the bottom of the first molten salt storage cavity 101. The molten salt pump tank 2 has a second molten salt storage cavity 201 and a second molten salt inlet 202 in communication with the second molten salt storage cavity 201. One end of the connecting pipe 3 is communicated with the molten salt outlet 103, and the other end of the connecting pipe 3 is communicated with the second molten salt inlet 202.
The utility model discloses fused salt storage device 100 is through setting up communicating pipe 3 and fused salt pump case 2 for fused salt accessible connecting pipe 3 in the fused salt jar body 1 gets into fused salt pump case 2, need not to set up the major axis fused salt pump from this in the upper end of fused salt pump case 2 and can carry the fused salt in the fused salt jar body 1, set up the minor axis fused salt pump in the upper end of fused salt pump case 2 and can carry the low temperature fused salt in the fused salt jar body 1 for example.
Simultaneously because major axis molten salt pump has the characteristics that manufacturing cost is high and the fault rate is high for the minor axis molten salt pump, the fused salt storage device 100 that adopts the major axis molten salt pump often manufacturing cost is high and the fault rate is high, and the utility model discloses fused salt storage device 100 only need set up the minor axis molten salt pump and carry the fused salt.
Therefore, by utilizing the molten salt storage device 100 of the embodiment of the present invention, the failure rate of molten salt transportation can be reduced, and the stability of molten salt transportation can be improved.
A molten salt storage apparatus 100 according to an embodiment of the present invention will be described below with reference to fig. 1.
As shown in fig. 1, the molten salt storage apparatus 100 includes a molten salt tank 1, a molten salt pump tank 2, and a connection pipe 3. The molten salt tank body 1 is provided with a first molten salt storage cavity 101, and a first molten salt inlet 102 and a molten salt outlet 103 which are communicated with the first molten salt storage cavity 101, wherein the molten salt outlet 103 is arranged at the bottom of the first molten salt storage cavity 101. For example, the molten salt outlet 103 may be opened on the bottom wall surface of the first molten salt storing chamber 101, and the molten salt outlet 103 may also be opened on the bottom of the side wall surface of the first molten salt storing chamber 101.
The molten salt pump tank 2 has a second molten salt storage cavity 201 and a second molten salt inlet 202 communicating with the second molten salt storage cavity 201. One end of the connecting pipe 3 is communicated with the molten salt outlet 103, and the other end of the connecting pipe 3 is communicated with the second molten salt inlet 202.
The utility model discloses fused salt storage device 100 is through setting up communicating pipe 3 and fused salt pump case 2 for fused salt accessible connecting pipe 3 in the fused salt jar body 1 gets into fused salt pump case 2 in, sets up the minor axis fused salt pump in the upper end of fused salt pump case 2 from this and can accomplish and carry the fused salt in the fused salt jar body 1. For example, the molten salt in the molten salt tank body 1 can be conveyed by arranging a short-shaft molten salt pump at the upper end of the molten salt pump box 2.
Simultaneously because major axis molten salt pump has the characteristics that manufacturing cost is high and the fault rate is high for the minor axis molten salt pump, the fused salt storage device 100 that adopts the major axis molten salt pump often manufacturing cost is high and the fault rate is high, and the utility model discloses fused salt storage device 100 only need set up the minor axis molten salt pump and carry the fused salt. Through utilizing the utility model discloses fused salt storage device 100, can reduce the fault rate that the fused salt was carried, improve the stability that the fused salt was carried.
Further, as shown in fig. 1, a second molten salt inlet 202 is opened at the bottom of the second molten salt storage chamber 201. The second molten salt inlet 202 is arranged at the bottom of the second molten salt storage cavity 201, so that the smoothness of the molten salt in the first molten salt storage cavity 101 entering the second molten salt storage cavity 201 can be improved. For example, the second molten salt inlet 202 may be opened on the bottom wall surface of the second molten salt storage cavity 201, and the second molten salt inlet 202 may also be opened on the bottom of the side wall surface of the second molten salt storage cavity 201.
Further, as shown in fig. 1, the molten salt storage device 100 according to the embodiment of the present application further includes a switch valve 4, the switch valve 4 is disposed on the connection pipe 3, and the switch valve 4 is configured to open and close the connection pipe, so as to control the molten salt in the first molten salt storage cavity 101 to enter the second molten salt storage cavity 201, and prevent excessive molten salt from entering the second molten salt storage cavity 201.
Further, as shown in fig. 1, the molten salt storage apparatus 100 of the embodiment of the present application further includes a level meter 5 for detecting a molten salt level in the second molten salt storage cavity 201, and at least a part of the level meter 5 is located in the second molten salt storage cavity 201. Specifically, the controller of the liquid level meter 5 is connected, the switch valve 4 is also connected with the controller, the liquid level meter 5 arranged in the second molten salt storage cavity 201 transmits a liquid level detection value to the controller in real time, and the controller controls the switch valve 4 to be opened and closed according to the liquid level detection value, so that the liquid level in the second molten salt storage cavity 201 is basically constant. The utility model discloses fused salt storage device 100 adjusts the indoor fused salt liquid level height of second fused salt storage chamber 201 through opening and closing of control switch valve 4, prevents that the second fused salt from storing the liquid level in chamber 201 too high, has improved widely the utility model discloses fused salt storage device 100's stability.
Further, as shown in fig. 1, the upper end face of the second molten salt storage chamber 201 is located below the upper end face of the first molten salt storage chamber 101. The utility model discloses fused salt storage device 100 is through the below of the up end of locating first fused salt storage chamber 101 with the up end of second fused salt storage chamber 201 for first fused salt storage chamber 101 and second fused salt form the linker structure between the storage chamber 201, thereby the fused salt of first fused salt storage chamber 101 can get into smoothly in second fused salt storage chamber 201 under the condition of no conveying equipment, further reduced manufacturing cost and energy consumption.
In some embodiments, as shown in fig. 1, the molten salt storage device 100 of the embodiment of the present invention further includes a plurality of flow equalizing pieces 6, where the flow equalizing pieces 6 are disposed in the first molten salt storage cavity 101 and the flow equalizing pieces 6 are connected to the wall surface of the first molten salt storage cavity 101, so as to fix the flow equalizing pieces 6 in the first molten salt storage cavity 101. The first molten salt inlet 102 and the molten salt outlet 103 are respectively connected with the corresponding flow equalizing pieces 6. The embodiment of the utility model provides a link to each other with the piece 6 that flow equalizes respectively through first fused salt import 102 and fused salt export 103 for fused salt business turn over fused salt jar body can carry out abundant heat transfer through the piece 6 that flow equalizes when 1, so that the theoretical heat storage capacity of the fused salt jar body 1 of high-efficient utilization.
Further, as shown in fig. 3, each flow equalizing member 6 is composed of a main pipe 7 and a plurality of branch pipes 8, and one end of each branch pipe 8 is connected to the main pipe 7. Specifically, the main pipe 7 is of an annular structure, and each branch pipe 8 is distributed at intervals along the main pipe 7. The utility model discloses fused salt storage device 100 is through setting up to be constituteed by being responsible for 7 and a plurality of branch pipes 8 with the piece 6 that flow equalizes, can make the fused salt can carry out abundant heat transfer when business turn over fused salt jar body 1 to the theoretical heat storage capacity of the fused salt jar body 1 of high-efficient utilization.
Further, as shown in fig. 4, a port of one end of the branch pipe 8 away from the main pipe 7 is provided with a filter screen 9. Specifically, the one end of branch pipe 8 feed liquor or flowing back is equipped with filter screen 9 for the solid heat accumulation medium of separation in the first fused salt storage chamber 101 flows out fused salt jar body 1, with the purity of guaranteeing the fused salt. It will be appreciated that the size of the filter screen 9 is considered in combination with the total pressure drop of the thermal storage system and the average diameter of the solid thermal storage medium (and its debris).
The embodiment of the utility model provides a fused salt heat-retaining system 200 is still provided, as shown in fig. 2, including fused salt storage device 100, high temperature molten salt pump 10, exothermic unit 11, low temperature molten salt pump 12 and heat filling unit 13.
The molten salt storage device 100 is the molten salt storage device 100 of the above embodiment of the present invention, wherein the first molten salt inlet 102 of the molten salt storage device 100 includes a low temperature molten salt inlet and a high temperature molten salt inlet.
Specifically, the upper portion at first fused salt storage chamber 101 is seted up to high temperature fused salt import for high temperature fused salt can enter into the upper portion of first fused salt storage chamber 101 in order to form the high temperature fused salt layer, and the lower part at first fused salt storage chamber 101 is seted up to low temperature fused salt import, makes low temperature fused salt can enter into the lower part of first fused salt storage chamber 101 in order to form the low temperature fused salt layer.
The inlet of the high-temperature molten salt pump 10 is located at the upper portion of the first molten salt storage cavity 101 of the molten salt storage apparatus 100 so as to pump the high-temperature molten salt located at the upper portion of the first molten salt storage cavity 101.
Because the upper portion that high temperature fused salt got into first fused salt storage chamber 101 through the import of high temperature fused salt forms the high temperature fused salt layer, the import of locating high temperature fused salt pump 10 can make high temperature fused salt pump 10 accurately carry out the suction to high temperature fused salt on the upper portion of first fused salt storage chamber 101.
The heat release unit 11 is provided with a hot side inlet 111 and a cold side outlet 112, wherein the hot side inlet 111 is communicated with the outlet of the high-temperature molten salt pump 10, and the cold side outlet 112 is communicated with the low-temperature molten salt inlet. The exothermic unit 11 may cool the high temperature molten salt (best illustrated by practical application) to convert the high temperature molten salt into a low temperature molten salt.
Specifically, the heat releasing unit 11 may be an environment requiring a supply of thermal energy, such as a residential area requiring heating or an industrial equipment requiring heat. High-temperature molten salt enters the heat release unit 11 through the hot-side inlet 111, and the high-temperature molten salt is converted into low-temperature molten salt after heat exchange with the heat release unit and is discharged through the cold-side outlet 112.
The inlet of the low-temperature molten salt pump 12 is located at the upper part of the second molten salt storage cavity 201 of the molten salt storage device 100. The low-temperature molten salt located on the lower portion of the first molten salt storage cavity 101 enters the second molten salt storage cavity 201 through the communicating pipe, the low-temperature molten salt in the second molten salt storage cavity 201 can be pumped by the low-temperature molten salt pump 12 with the short shaft at the moment, and the low-temperature molten salt in the lower portion of the first molten salt storage cavity 101 does not need to be pumped by the long-shaft molten salt pump with high manufacturing cost and high failure rate. The manufacturing cost and failure rate of the molten salt storage device 100 are reduced.
The heat charging unit 13 is provided with a cold side inlet 131 and a hot side outlet 132, wherein the cold side inlet 131 is communicated with the outlet of the low-temperature molten salt pump 12, and the cold side outlet 112 is communicated with the high-temperature molten salt inlet. The heat charging unit 13 may convert low temperature molten salt into high temperature molten salt.
Specifically, the heat charging unit 13 may be a high-temperature industrial apparatus or the like that requires temperature reduction. The low-temperature molten salt is introduced into the high-temperature industrial equipment through the cold-side inlet 131, and the low-temperature molten salt is converted into high-temperature molten salt after heat exchange with the high-temperature industrial equipment and is discharged through the hot-side outlet 132.
In some embodiments, the molten salt heat storage system 200 of the present invention may further include a high temperature molten salt storage device 14, a high temperature molten salt pump 10, a low temperature molten salt storage device 15, a low temperature molten salt pump 12, a heat releasing unit 11, and a heat charging unit 13.
The high temperature molten salt storage device 14 does the utility model discloses the molten salt storage device 100 of above-mentioned embodiment, wherein first molten salt import 102 is imported for the high temperature molten salt, and the lower part at first molten salt storage chamber 101 is seted up to the first molten salt import 102 of high temperature molten salt storage device 14 for the high temperature molten salt can get into in the first molten salt storage chamber 101.
The inlet of the high-temperature molten salt pump 10 is communicated with the second molten salt storage cavity 201 of the high-temperature molten salt storage device 14. The high-temperature molten salt in the molten salt tank body 1 of the high-temperature storage device 14 enters the second molten salt storage cavity 201 through the connecting pipe 3. At this time, the short-axis high-temperature molten salt pump 10 is adopted to pump the high-temperature molten salt in the second molten salt storage cavity 201 of the high-temperature molten salt storage device 14, and the long-axis molten salt pump with high manufacturing cost and high failure rate is not required to be adopted to pump the high-temperature molten salt in the molten salt tank body 1 of the high-temperature molten salt storage device 14.
The low temperature molten salt storage device 15 does the molten salt storage device 100 of the above embodiment of the present invention, wherein the first molten salt inlet 102 is a low temperature molten salt inlet, and the first molten salt inlet 102 of the low temperature molten salt storage device 15 is opened at the lower part of the first molten salt storage cavity 101, so that the low temperature molten salt can enter the first molten salt storage cavity 101.
The inlet of the low-temperature molten salt pump 12 is connected with the second molten salt storage cavity 201 of the low-temperature molten salt storage device 15. The low-temperature molten salt located at the lower part of the first molten salt storage cavity 101 of the low-temperature molten salt storage device 15 enters the second molten salt storage cavity 201 through the communicating pipe, the low-temperature molten salt in the second molten salt storage cavity 201 of the low-temperature molten salt storage device 15 can be pumped by the low-temperature molten salt pump 12 with the short shaft at the moment, the low-temperature molten salt below the first molten salt storage cavity 101 does not need to be pumped by the long-shaft molten salt pump with high manufacturing cost and high failure rate, and therefore the manufacturing cost and the failure rate of the molten salt storage device are reduced.
The heat release unit 11 is provided with a hot side inlet 111 and a cold side outlet 112, the hot side inlet 111 is communicated with the outlet of the high-temperature molten salt pump 10, the cold side outlet 112 is communicated with the first molten salt inlet 102 of the low-temperature molten salt storage device 15, and the heat release unit 11 can cool the high-temperature molten salt to convert the high-temperature molten salt into the low-temperature molten salt.
Specifically, the heat releasing unit 11 may be an environment requiring a supply of thermal energy, such as a residential area requiring heating or an industrial equipment requiring heat. High-temperature molten salt enters the heat release unit 11 through the hot-side inlet 111, and the high-temperature molten salt is converted into low-temperature molten salt after heat exchange with the heat release unit and is discharged through the cold-side outlet 112.
The heat charging unit 13 is provided with a cold side inlet 131 and a hot side outlet 132, wherein the cold side inlet 131 is communicated with the outlet of the low-temperature molten salt pump 12, and the hot side outlet 132 is communicated with the first molten salt inlet 102 of the high-temperature molten salt storage device 14. The heat charging unit 13 may convert low temperature molten salt into high temperature molten salt.
Specifically, the heat charging unit 13 may be a high-temperature industrial apparatus or the like that requires temperature reduction. The low-temperature molten salt is introduced into the high-temperature industrial equipment through the cold-side inlet 131, and the low-temperature molten salt is converted into high-temperature molten salt after heat exchange with the high-temperature industrial equipment and is discharged through the hot-side outlet 132.
The utility model discloses fused salt heat-retaining system 200 only needs to adopt minor axis fused salt pump can carry the fused salt, great reduction fused salt heat-retaining system 200's the cost of manufacture and the stability that has improved fused salt heat-retaining system 200.
Further, the low-temperature molten salt pump 12 and the high-temperature molten salt pump 10 are both short-shaft submerged pumps. The utility model discloses fused salt heat-retaining system 200 adopts the high temperature fused salt pump 10 and the low temperature fused salt pump 12 of minor axis, because the minor axis fused salt pump has with low costs and the little characteristics of fault rate, consequently makes the fused salt heat-retaining system 200 of the embodiment have the cost of manufacture carry with the little characteristics of fault rate.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A molten salt storage device, comprising:
the molten salt tank body (1) is provided with a first molten salt storage cavity (101), a first molten salt inlet (102) and a molten salt outlet (103) which are communicated with the first molten salt storage cavity (101), and the molten salt outlet (103) is arranged at the bottom of the first molten salt storage cavity (101);
a molten salt pump tank (2), the molten salt pump tank (2) having a second molten salt storage cavity (201) and a second molten salt inlet (202) communicating with the second molten salt storage cavity (201);
and one end of the connecting pipe (3) is communicated with the molten salt outlet (103), and the other end of the connecting pipe (3) is communicated with the second molten salt inlet (202).
2. The molten salt storage device according to claim 1, characterized in that the second molten salt inlet (202) opens at the bottom of the second molten salt storage cavity (201).
3. The molten salt storage device according to claim 1, characterized by further comprising a switch valve (4), the switch valve (4) being provided on the connection pipe (3).
4. A molten salt storage apparatus as claimed in claim 1 further comprising a level meter (5) for detecting molten salt level within the second molten salt storage cavity (201), at least a portion of the level meter (5) being located within the second molten salt storage cavity (201).
5. A molten salt storage apparatus as claimed in claim 1 characterised in that the upper end face of the second molten salt storage cavity (201) is located below the upper end face of the first molten salt storage cavity (101).
6. The molten salt storage device according to claim 1, characterized by further comprising a plurality of flow equalizing pieces (6), wherein the flow equalizing pieces (6) are arranged in the molten salt tank body (1), the flow equalizing pieces (6) are connected with the inner wall of the molten salt tank body (1), and the first molten salt inlet (102) and the molten salt outlet (103) are respectively connected with the corresponding flow equalizing pieces (6).
7. The molten salt storage device according to claim 6, characterized in that the flow straightener (6) comprises a main pipe (7) and a plurality of branch pipes (8), each branch pipe (8) being connected at one end to the main pipe (7).
8. Molten salt storage apparatus as claimed in claim 7, characterised in that the port of the end of each branch pipe (8) remote from the main pipe (7) is provided with a filter screen (9).
9. A molten salt heat storage system, comprising:
a molten salt storage apparatus according to any one of claims 1 to 8, wherein the first molten salt inlet (102) comprises a low temperature molten salt inlet and a high temperature molten salt inlet, the high temperature molten salt inlet being located above the low temperature molten salt inlet;
the inlet of the high-temperature molten salt pump (10) is positioned at the upper part of the first molten salt storage cavity (101) of the molten salt storage device;
the heat release unit (11) is provided with a hot side inlet (111) and a cold side outlet (112), the hot side inlet (111) is communicated with the outlet of the high-temperature molten salt pump (10), and the hot side outlet (132) is communicated with the low-temperature molten salt inlet;
the inlet of the low-temperature molten salt pump (12) is communicated with a second molten salt storage cavity (201) of the molten salt storage device; and
a heat charging unit (13), the heat charging unit (13) having a cold side inlet (131) and a hot side outlet (132), the cold side inlet (131) being in communication with an outlet of the low temperature molten salt pump (12), the cold side outlet (112) being in communication with the high temperature molten salt inlet,
or the molten salt heat storage system comprises:
a high temperature molten salt storage device (14), the high temperature molten salt storage device (14) being a molten salt storage device according to any one of claims 1-8, wherein the first molten salt inlet (102) is a high temperature molten salt inlet;
the inlet of the high-temperature molten salt pump (10) is communicated with the second molten salt storage cavity (201) of the high-temperature molten salt storage device (14);
a low temperature molten salt storage device (15), the low temperature molten salt storage device (15) being a molten salt storage device according to any one of claims 1 to 8, wherein the first molten salt inlet (102) is a low temperature molten salt inlet;
the inlet of the low-temperature molten salt pump (12) is communicated with the second molten salt storage cavity (201) of the low-temperature molten salt storage device (15);
the heat release unit (11) is provided with a hot side inlet (111) and a cold side outlet (112), the hot side inlet (111) is communicated with the outlet of the high-temperature molten salt pump (10), and the hot side outlet (132) is communicated with the first molten salt inlet (102) of the low-temperature molten salt storage device (15);
a heat charging unit (13), wherein the heat charging unit (13) is provided with a cold side inlet (131) and a hot side outlet (132), the cold side inlet (131) is communicated with the outlet of the low-temperature molten salt pump (12), and the hot side outlet (132) is communicated with the first molten salt inlet (102) of the high-temperature molten salt storage device (14).
10. The molten salt heat storage system of claim 9 characterized in that the low temperature molten salt pump (12) and the high temperature molten salt pump (10) are both short shaft submerged pumps.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221186887.4U CN217716066U (en) | 2022-05-17 | 2022-05-17 | Molten salt storage device and molten salt heat storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221186887.4U CN217716066U (en) | 2022-05-17 | 2022-05-17 | Molten salt storage device and molten salt heat storage system |
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| CN202221186887.4U Active CN217716066U (en) | 2022-05-17 | 2022-05-17 | Molten salt storage device and molten salt heat storage system |
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Assignee: HUANENG INTERNATIONAL POWER CO.,LTD. DEZHOU POWER PLANT Assignor: Xi'an Thermal Power Research Institute Co.,Ltd. Contract record no.: X2023980054524 Denomination of utility model: Molten salt storage device and molten salt thermal storage system Granted publication date: 20221101 License type: Common License Record date: 20231229 |
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