Fused salt storage tank and fused salt electric heat storage long-time energy storage device

Abstract

The invention provides a fused salt storage tank and a fused salt electric heat storage long-time energy storage device. The fused salt storage tank and the fused salt electric heat storage long-time energy storage device comprise a salt storage tank body, a partition plate is fixedly installed on the inner wall of the fused salt storage tank body, a circular plate is rotatably installed on the partition plate, and a collecting groove is formed in the circular plate; the top plate is fixedly installed on the fused salt storage tank body, a fused salt pump is fixedly installed on the top plate, a first suction pipe is fixedly installed at the suction end of the fused salt pump, a sleeve is rotatably installed on the first suction pipe, a second suction pipe is rotatably installed on the sleeve, and the second suction pipe is fixedly installed on the top plate. And one end of the second suction pipe extends into the collecting groove. According to the fused salt storage tank and the fused salt electric heat storage long-time energy storage device provided by the invention, the technical problem that liquid fused salt at the bottom is difficult to uniformly flow to a low-liquid-level area due to the fact that the low-liquid-level caliber of an existing fused salt storage tank is small and the position of a low-liquid-level opening cannot be changed is solved.

Description

Technical Field

[0001] The present invention relates to the field of novel energy storage technology, and in particular to a molten salt storage tank and a molten salt electric thermal storage long-term energy storage device. Background Art

[0002] In a solar thermal power station, molten salt storage tanks are usually divided into low-temperature molten salt tanks and high-temperature molten salt tanks. Low-temperature molten salt tanks are mainly used to melt solid salt and store liquid molten salt, melting solid salt into liquid molten salt for easy pumping and circulation in the entire system pipeline. The molten salt electric thermal storage long-term energy storage device is a system that uses molten salt as an energy storage medium and converts electrical energy into thermal energy through an electric heating device and stores it in molten salt.

[0003] After searching, the application number is 202310188196.0, which is a molten salt storage tank in the low liquid level area of ​​a solar thermal power station. Its structure includes a tank body, a filling layer, a low liquid level area and a molten salt pump; the filling layer is arranged on the bottom plate of the tank body; the low liquid level area is embedded in the filling layer and communicated with the inside of the tank body; the suction pump shaft of the molten salt pump passes through the top of the tank body and the inside of the tank body in turn and penetrates into the low liquid level area. The invention sets a low liquid level area on the bottom plate of the molten salt storage system, and utilizes the characteristics of molten salt sinking under gravity. The liquid molten salt in the tank body will first gather in the low liquid level area. After the low liquid level area is filled with liquid molten salt, the liquid level in the tank body will gradually rise; because the suction pump shaft of the molten salt pump is placed in the low liquid level area, it can send out most or even all of the liquid molten salt. The molten salt storage system of the invention can reduce or even avoid the accumulation of liquid molten salt in the tank body, and relatively all resources can be utilized, which has economic benefits.

[0004] However, in the use of the above invention, due to the small diameter of the low liquid level port and the inability to change the position of the low liquid level port, it is difficult for the liquid molten salt at the bottom to flow evenly to the low liquid level area, which not only affects the use effect of the molten salt storage tank, but also has a certain impact on the use effect of the related molten salt electric thermal storage long-term energy storage device.

[0005] Therefore, it is necessary to provide a molten salt storage tank and a molten salt electric thermal storage long-term energy storage device to solve the above technical problems. Summary of the invention

[0006] In order to solve the technical problem that the existing molten salt storage tank has a small low liquid level opening and the position of the low liquid level opening cannot be changed, making it difficult for the liquid molten salt at the bottom to flow evenly to the low liquid level area, the present invention provides a molten salt storage tank and a molten salt electric thermal storage long-term energy storage device.

[0007] The molten salt storage tank provided by the present invention comprises: a molten salt storage tank body, a partition is fixedly installed on the inner wall of the molten salt storage tank body, a circular plate is rotatably installed on the partition, and a collecting trough is provided on the circular plate; a top plate fixedly installed on the molten salt storage tank body, a molten salt pump is fixedly installed on the top plate, a first suction pipe is fixedly installed on the suction end of the molten salt pump, a sleeve is rotatably installed on the first suction pipe, a second suction pipe is rotatably installed on the sleeve, and one end of the second suction pipe extends to the inside of the collecting trough; a bracket welded on the circular plate, one side of the bracket is fixedly connected to the second suction pipe; a horizontal plate welded on one side of the molten salt storage tank body, a photovoltaic panel for power generation is fixedly installed on the horizontal plate; a driving mechanism for rotating the circular plate mounted on the molten salt storage tank body; a cleaning mechanism for cleaning the photovoltaic panel mounted on the horizontal plate.

[0008] Preferably, the driving mechanism includes: a support plate fixedly mounted on one side of the molten salt storage tank body, a reduction motor fixedly mounted on the support plate; a rotating shaft rotatably mounted on the molten salt storage tank body, one end of the rotating shaft being fixedly connected to the output shaft of the reduction motor; a first bevel gear fixedly mounted on one end of the rotating shaft; a second bevel gear fixedly sleeved on the circular plate, the second bevel gear meshing with the first bevel gear.

[0009] Preferably, the cleaning mechanism includes: a sliding groove provided on the horizontal plate, a reciprocating screw being rotatably mounted on the inner walls on both sides of the sliding groove, one end of the reciprocating screw extending to the outside of the horizontal plate; a first sprocket fixedly mounted on the rotating shaft; a second sprocket fixedly mounted on the reciprocating screw; a chain mounted on the first sprocket and the second sprocket; a connecting block threadedly mounted on the reciprocating screw, the connecting block being slidably connected to the inner wall of the sliding groove; a connecting plate fixedly mounted on the connecting block, and bristles being provided on the bottom of the connecting plate.

[0010] Preferably, a box is fixedly mounted on the bottom of the transverse plate, and a battery for storing electric energy is arranged inside the box.

[0011] Preferably, an annular plate is fixedly mounted on the inner wall of the molten salt storage tank body, and the inner wall of the annular plate is inclined.

[0012] Preferably, the inner wall of one side of the collecting tank is inclined, and the partition is arranged in a ring shape.

[0013] Preferably, a thermal insulation layer is fixedly installed on the outer wall of the molten salt storage tank body, and the thermal insulation layer is made of glass wool material.

[0014] Preferably, an injection pipe is fixedly mounted on the molten salt storage tank body, and a solenoid valve is provided on the injection pipe.

[0015] Preferably, a sealed bearing is fixedly mounted on the inner wall of the partition, and the inner ring of the sealed bearing is fixedly connected to the circular plate.

[0016] The present solution also provides a molten salt electric thermal storage long-time energy storage device, including a molten salt electric thermal storage long-time energy storage device body.

[0017] Compared with the related art, the molten salt storage tank and the molten salt electric thermal storage long-term energy storage device provided by the present invention have the following beneficial effects:

[0018] The present invention provides a molten salt storage tank and a molten salt electric heat storage long-term energy storage device. The molten salt can be used as an energy storage medium through the molten salt electric heat storage long-term energy storage device body. The electric heating device converts electrical energy into thermal energy and stores it in the molten salt. The molten salt flowing into the collecting tank can be sucked out by the coordinated use of a molten salt pump, a first suction pipe, a sleeve and a second suction pipe. The driving mechanism can drive the circular plate to rotate on the partition plate, so that the collecting tank on the circular plate can change its position by rotating. During the rotation of the circular plate, the circular plate will drive the second suction pipe to rotate on the sleeve through the bracket, so that the liquid molten salt at the bottom can flow evenly to the collecting tank. The cleaning mechanism will also run at the same time every time the driving mechanism is started, which can clean up the dust attached to the photovoltaic panel to prevent the excessive accumulation of dust from affecting the power generation efficiency of the photovoltaic panel, and the cleaning is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of a molten salt storage tank and a molten salt electric thermal storage long-term energy storage device provided by the present invention;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0021] Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown;

[0022] Figure 4 for Figure 2 An enlarged schematic diagram of part C is shown;

[0023] Figure 5 It is a schematic diagram of the assembly structure of the connecting block, the connecting plate and the bristles in the present invention;

[0024] Figure 6 It is a three-dimensional schematic diagram of the bracket in the present invention.

[0025] Numbers in the figure: 1. Molten salt storage tank body; 2. Partition; 3. Round plate; 4. Top plate; 5. Molten salt pump; 6. First suction pipe; 7. Sleeve; 8. Second suction pipe; 9. Bracket; 10. Cross plate; 11. Photovoltaic panel; 12. Support plate; 13. Speed ​​reducer motor; 14. First bevel gear; 15. Second bevel gear; 16. First sprocket; 17. Reciprocating screw; 18. Second sprocket; 19. Chain; 20. Connecting block; 21. Connecting plate; 22. Brush; 23. Box; 24. Battery; 25. Ring plate; 26. Insulation layer; 27. Injection pipe; 28. Solenoid valve; 29. ​​Molten salt electric thermal storage long-term energy storage device body; 30. Sliding groove; 31. Rotating shaft. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Please refer to Figure 1-6 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a molten salt storage tank and a molten salt electric thermal storage long-term energy storage device provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown; Figure 4 for Figure 2 An enlarged schematic diagram of part C is shown; Figure 5 It is a schematic diagram of the assembly structure of the connecting block, the connecting plate and the bristles in the present invention; Figure 6 It is a three-dimensional schematic diagram of the bracket in the present invention. The molten salt storage tank includes: a molten salt storage tank body 1, a partition 2 is fixedly installed on the inner wall of the molten salt storage tank body 1, a circular plate 3 is rotatably installed on the partition 2, and a collecting tank is provided on the circular plate 3; a top plate 4 is fixedly installed on the molten salt storage tank body 1, a molten salt pump 5 is fixedly installed on the top plate 4, a first suction pipe 6 is fixedly installed on the suction end of the molten salt pump 5, a sleeve 7 is rotatably installed on the first suction pipe 6, a second suction pipe 8 is rotatably installed on the sleeve 7, and one end of the second suction pipe 8 extends to the inside of the collecting tank; a bracket 9 welded on the circular plate 3, one side of the bracket 9 is fixedly connected to the second suction pipe 8; a horizontal plate 10 welded on one side of the molten salt storage tank body 1, a photovoltaic panel 11 for power generation is fixedly installed on the horizontal plate 10; a driving mechanism for rotating the circular plate 3 mounted on the molten salt storage tank body 1; a cleaning mechanism for cleaning the photovoltaic panel 11 mounted on the horizontal plate 10.

[0028] The driving mechanism includes: a support plate 12 fixedly mounted on one side of the molten salt storage tank body 1, on which a reduction motor 13 is fixedly mounted; a rotating shaft 31 rotatably mounted on the molten salt storage tank body 1, one end of the rotating shaft 31 is fixedly connected to the output shaft of the reduction motor 13; a first bevel gear 14 fixedly mounted on one end of the rotating shaft 31; a second bevel gear 15 fixedly sleeved on the circular plate 3, the second bevel gear 15 is meshed with the first bevel gear 14, and through the use of the driving mechanism, the circular plate 3 can be driven to rotate on the partition 2, so that the collecting slot on the circular plate 3 can change its position by rotation.

[0029] The cleaning mechanism includes: a sliding groove 30 provided on the horizontal plate 10, on the inner walls of both sides of the sliding groove 30, reciprocating screws 17 are rotatably installed, and one end of the reciprocating screw 17 extends to the outside of the horizontal plate 10; a first sprocket 16 fixedly mounted on the rotating shaft 31; a second sprocket 18 fixedly mounted on the reciprocating screw 17; a chain 19 mounted on the first sprocket 16 and the second sprocket 18; a connecting block 20 threadedly mounted on the reciprocating screw 17, and the connecting block 20 is slidably connected to the inner wall of the sliding groove 30; a connecting plate 21 fixedly mounted on the connecting block 20, and bristles 22 are provided on the bottom of the connecting plate 21. Through the use of the cleaning mechanism, dust attached to the photovoltaic panel 11 can be cleaned while the driving mechanism is running to prevent excessive accumulation of dust from affecting the power generation efficiency of the photovoltaic panel 11.

[0030] A box body 23 is fixedly mounted on the bottom of the transverse plate 10 , and a battery 24 for storing electric energy is disposed inside the box body 23 .

[0031] An annular plate 25 is fixedly mounted on the inner wall of the molten salt storage tank body 1, and the inner wall of the annular plate 25 is inclined.

[0032] The inner wall of one side of the collecting tank is inclined, and the partition plate 2 is arranged in a ring shape. By arranging the inner wall of one side of the collecting tank to be inclined, the molten salt can flow into the collecting tank more smoothly.

[0033] A heat-insulating layer 26 is fixedly mounted on the outer wall of the molten salt storage tank body 1 , and the heat-insulating layer 26 is made of glass wool material.

[0034] An injection pipe 27 is fixedly installed on the molten salt storage tank body 1, and a solenoid valve 18 is arranged on the injection pipe 27. The injection pipe 27 and the solenoid valve 28 are used in coordination to facilitate the staff to inject molten salt into the molten salt storage tank body 1 when needed.

[0035] A sealed bearing is fixedly mounted on the inner wall of the partition 2 , and the inner ring of the sealed bearing is fixedly connected to the circular plate 3 . The use of the sealed bearing can prevent the molten salt from contaminating the first bevel gear 14 and the second bevel gear 15 .

[0036] The present solution also provides a molten salt electric thermal storage long-time energy storage device, including a molten salt electric thermal storage long-time energy storage device body 29.

[0037] The working principles of the molten salt storage tank and the molten salt electric thermal storage long-term energy storage device provided by the present invention are as follows:

[0038] During use, the molten salt electric thermal storage long-term energy storage device body 29 can use molten salt as an energy storage medium, convert electrical energy into thermal energy through an electric heating device and store it in the molten salt. This belongs to the prior art and will not be described here. When the molten salt pump 5 is used to suck out the molten salt in the molten salt storage tank body 1, the molten salt pump 5 can use the second suction pipe 8, sleeve 7 and first suction pipe 6 to suck out the molten salt flowing into the collecting tank and transport it to the corresponding equipment. In this process. The reduction motor 13 needs to be started at the same time, the reduction motor 13 will drive the rotating shaft 31 to rotate, the rotating shaft 31 will drive the first bevel gear 14 to rotate, the first bevel gear 14 will drive the second bevel gear 15 to rotate, and the second bevel gear 15 will drive the circular plate 3 to rotate on the partition 2, so that the collecting groove on the circular plate 3 can change its position by rotating. During the rotation of the circular plate 3, the circular plate 3 will drive the second suction pipe 8 to rotate on the sleeve 7 through the bracket 9, so that the liquid molten salt at the bottom can flow evenly to the collecting groove, which can not only improve the use effect of the molten salt storage tank, but also improve the use effect of the molten salt electric heat storage long-term energy storage device body 29 related thereto;

[0039] During use, the photovoltaic panel 11 can convert the sun's light energy into electrical energy, which can be stored in the battery 24. The electrical energy stored in the battery 24 can provide power support for the molten salt pump 5 and the reduction motor 13, so that in long-term use, the electricity cost can be effectively saved. Each time the reduction motor 13 is started to drive the rotating shaft 31 to rotate, the first sprocket 16 will drive the second sprocket 18 to rotate through the chain 19, and the second sprocket 18 will drive the reciprocating screw 17 to rotate. The reciprocating screw 17 will drive the connecting block 20 to slide back and forth on the inner wall of the sliding groove 30, and the connecting block 20 will drive the connecting plate 21 to move back and forth, and the connecting plate 21 will drive the bristles 22 to move back and forth, so that the bristles 22 can clean up the dust attached to the photovoltaic panel 11 by moving to prevent excessive accumulation of dust from affecting the power generation efficiency of the photovoltaic panel 11, and the cleaning is more convenient.

[0040] Compared with the related art, the molten salt storage tank and the molten salt electric thermal storage long-term energy storage device provided by the present invention have the following beneficial effects:

[0041] The present invention provides a molten salt storage tank and a molten salt electric heat storage long-term energy storage device. The molten salt can be used as an energy storage medium through the molten salt electric heat storage long-term energy storage device body 29. The electric heating device converts electrical energy into thermal energy and stores it in the molten salt. The molten salt flowing into the collecting tank can be sucked out by the coordinated use of the molten salt pump 5, the first suction pipe 6, the sleeve 7 and the second suction pipe 8. The use of the driving mechanism can drive the circular plate 3 to rotate on the partition 2, so that the collecting tank on the circular plate 3 can change its position by rotating. During the rotation of the circular plate 3, the circular plate 3 will drive the second suction pipe 8 to rotate on the sleeve 7 through the bracket 9, so that the liquid molten salt at the bottom can flow evenly to the collecting tank. In order to prevent the molten salt with low liquid level from being used, this can not only improve the use effect of the molten salt storage tank, but also improve the use effect of the molten salt electric thermal storage long-term energy storage device body 29 related thereto. The photovoltaic panel 11 can convert the solar light energy into electrical energy, and the converted electrical energy can be stored in the battery 24. The electrical energy stored in the battery 24 can provide power support for the molten salt pump 5 and the reduction motor 13. In this way, in long-term use, the electricity cost can be effectively saved. Each time the driving mechanism is started, the cleaning mechanism will also run together, which can clean up the dust attached to the photovoltaic panel 11 to prevent excessive accumulation of dust from affecting the power generation efficiency of the photovoltaic panel 11, and the cleaning is more convenient.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A molten salt storage tank, characterized in that: include: A molten salt storage tank body (1), wherein a partition plate (2) is fixedly mounted on the inner wall of the molten salt storage tank body (1), a circular plate (3) is rotatably mounted on the partition plate (2), and a collecting groove is provided on the circular plate (3); A top plate (4) fixedly mounted on the molten salt storage tank body (1), a molten salt pump (5) fixedly mounted on the top plate (4), a first suction pipe (6) fixedly mounted on the suction end of the molten salt pump (5), a sleeve (7) rotatably mounted on the first suction pipe (6), a second suction pipe (8) rotatably mounted on the sleeve (7), one end of the second suction pipe (8) extending to the interior of the collecting tank; a bracket (9) welded to the circular plate (3), one side of the bracket (9) being fixedly connected to the second suction pipe (8); A transverse plate (10) welded to one side of the molten salt storage tank body (1), a photovoltaic panel (11) for power generation being fixedly mounted on the transverse plate (10); A driving mechanism mounted on the molten salt storage tank body (1) and used for rotating the circular plate (3); A cleaning mechanism is installed on the transverse plate (10) and is used to clean the photovoltaic panel (11).

2. The molten salt storage tank according to claim 1, characterized in that: The driving mechanism comprises: A support plate (12) fixedly mounted on one side of the molten salt storage tank body (1), a reduction motor (13) fixedly mounted on the support plate (12); A rotating shaft (31) rotatably mounted on the molten salt storage tank body (1), wherein one end of the rotating shaft (31) is fixedly connected to an output shaft of the reduction motor (13); A first bevel gear (14) fixedly mounted on one end of the rotating shaft (31); A second bevel gear (15) is fixedly sleeved on the circular plate (3), and the second bevel gear (15) is meshed with the first bevel gear (14).

3. The molten salt storage tank according to claim 2, characterized in that: The cleaning mechanism comprises: A sliding groove (30) is provided on the horizontal plate (10), and a reciprocating screw (17) is rotatably mounted on the inner walls of both sides of the sliding groove (30), and one end of the reciprocating screw (17) extends to the outside of the horizontal plate (10); a first sprocket (16) fixedly sleeved on the rotating shaft (31); A second sprocket (18) fixedly mounted on the reciprocating screw (17); a chain (19) sleeved on the first sprocket (16) and the second sprocket (18); a connecting block (20) threadably mounted on the reciprocating screw (17), the connecting block (20) being slidably connected to the inner wall of the sliding groove (30); A connecting plate (21) is fixedly mounted on the connecting block (20), and bristles (22) are arranged on the bottom of the connecting plate (21).

4. The molten salt storage tank according to claim 1, characterized in that: A box body (23) is fixedly mounted on the bottom of the transverse plate (10), and a storage battery (24) for storing electric energy is arranged inside the box body (23).

5. The molten salt storage tank according to claim 1, characterized in that: An annular plate (25) is fixedly mounted on the inner wall of the molten salt storage tank body (1), and the inner wall of the annular plate (25) is inclined.

6. The molten salt storage tank according to claim 1, characterized in that: The inner wall of one side of the collecting tank is arranged to be inclined, and the partition plate (2) is arranged to be ring-shaped.

7. The molten salt storage tank according to claim 1, characterized in that: A thermal insulation layer (26) is fixedly mounted on the outer wall of the molten salt storage tank body (1), and the thermal insulation layer (26) is made of glass wool material.

8. The molten salt storage tank according to claim 1, characterized in that: An injection pipe (27) is fixedly mounted on the molten salt storage tank body (1), and an electromagnetic valve (28) is arranged on the injection pipe (27).

9. The molten salt storage tank according to claim 1, characterized in that: A sealing bearing is fixedly mounted on the inner wall of the partition (2), and the inner ring of the sealing bearing is fixedly connected to the circular plate (3).

10. A molten salt electric thermal storage long-term energy storage device, characterized in that: It comprises a molten salt electric heat storage long-time energy storage device body (29) connected to the molten salt storage tank as described in any one of claims 1 to 9.

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