Fused salt phase change heat storage device

Abstract

The utility model relates to the technical field of phase-change heat storage, in particular to a fused salt phase-change heat storage device which comprises an outer furnace, an inner furnace, an inner furnace and an inner furnace. The crushing structure comprises a first extrusion plate and a second extrusion plate, and multiple sets of protruding blocks are arranged on the adjacent sides of the first extrusion plate and the second extrusion plate. The moving structure is connected with the protective shell; and the moving structure comprises two groups of moving plates which are arranged in the protective shell. By operating a moving structure, the moving structure can push a moving plate to move towards the outer side, so that a space is provided for molten salt crushing below a second extrusion plate, then a crushing structure is operated, and the crushing structure can firstly drive the second extrusion plate to move downwards, so that the upper end face of the second extrusion plate is flush with the lowest end of the space; a first extrusion plate is driven to move towards a second extrusion plate to extrude and crush the fused salt in the heating cavity, so that the whole fused salt is crushed before melting, and the waste of resources is avoided; and the heating cavity can move along with the movement of the second extrusion plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of phase change heat storage, specifically to a molten salt phase change heat storage device. BACKGROUND

[0002] China's clean energy transformation accelerates, and the share of new energy is increasing. However, the volatility of new energy and the peak-valley characteristics of user energy consumption increase the complexity and instability of the power system. In contrast, the limited peak shaving capacity of coal-fired power plants makes it difficult to accommodate new energy. Molten salt phase change heat storage technology can solve this problem. Molten salt phase change heat storage technology has the advantages of low price, safe and stable system, high working temperature, environmental friendliness, and non-flammability. During heat storage, the temperature is raised by absorbing external heat, and during heat release, the temperature of the output medium is raised by heat exchange.

[0003] However, the existing molten salt phase change heat storage device, when in use, heats the molten salt to melt and store heat. When heat needs to be released, the molten salt is brought into contact with the output medium, and heat exchange is used to transfer the heat in the molten salt to the output medium. However, during this process, the molten salt solidifies from a liquid state to a solid state. However, because the solidified molten salt integrates into a block (similar to an ice block), the overall molten salt requires more heat to melt than the dispersed molten salt, but the amount of heat released is the same. This results in heat loss and makes it impossible to break up the overall molten salt before melting, resulting in waste of resources. SUMMARY

[0004] The utility model aims to solve the problem of waste of resources caused by the inability of the existing molten salt phase change heat storage device to break up the overall molten salt before melting.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A molten salt phase change heat storage device, comprising:

[0007] An outer furnace, one end of which is in communication with a protective shell;

[0008] A heating assembly, which is sleeved on the outer side of the outer furnace and is used to heat the interior of the outer furnace;

[0009] A crushing structure, which is arranged in the interior of the outer furnace and is used to crush the molten salt; the crushing structure comprises: a first extrusion plate and a second extrusion plate, one side of the first extrusion plate and the second extrusion plate adjacent to each other is provided with a plurality of groups of protrusions; a heating cavity is formed between the first extrusion plate, the second extrusion plate, and the outer furnace;

[0010] A moving structure is connected with the protective shell and is used to provide space for crushing; the moving structure comprises two groups of moving plates arranged inside the protective shell and used to move the moving plates to provide space for crushing.

[0011] Preferably, the crushing structure comprises:

[0012] An annular slide rail is arranged on the side of the first extrusion plate away from the second extrusion plate and is fixedly connected with the first extrusion plate; a slide channel is arranged on the surface of the annular slide rail;

[0013] A first hydraulic cylinder is provided with a sliding block at the output end, and the sliding block is arranged in the slide channel, so that the first hydraulic cylinder is in sliding connection with the annular slide rail through the sliding block;

[0014] A second hydraulic cylinder is fixedly connected with the side of the second extrusion plate away from the first extrusion plate;

[0015] A supporting assembly is fixedly connected with the end of the second hydraulic cylinder away from the output end;

[0016] A rotating assembly is fixedly connected with the outer side of the second hydraulic cylinder.

[0017] Preferably, the supporting assembly comprises:

[0018] A rotating disc is fixedly connected with the end of the second hydraulic cylinder away from the output end;

[0019] A supporting ring is sleeved on the outer side of the rotating disc and is in rotary connection with the rotating disc; the outer side of the supporting ring is fixedly connected with the protective shell.

[0020] Preferably, the rotating assembly comprises:

[0021] A first gear is fixedly connected with the outer side of the second hydraulic cylinder;

[0022] A second gear is in meshing connection with the edge of the first gear;

[0023] A first motor is fixedly connected with the shaft center of the second gear.

[0024] Preferably, the method further comprises a partition plate arranged inside the protective shell and used to separate the space for crushing.

[0025] Preferably, the moving structure comprises:

[0026] A groove plate is arranged inside the protective shell and is located on the side of the partition plate away from the first extrusion plate; a sliding groove is arranged on the surface of the groove plate;

[0027] Two groups of connecting members, two ends of each group of connecting members are fixedly connected with the outer side of the chute plate and the moving plate respectively;

[0028] Two groups of rotating members, each group of rotating members is composed of a rotating disc and a cylindrical pin, the surface edge of the rotating disc is fixedly connected with the cylindrical pin; the cylindrical pin is arranged in the chute, so that the rotating disc is slidingly connected with the chute plate through the cylindrical pin;

[0029] A transmission member is composed of a toothed belt and two groups of belt gears, the edges of the two groups of belt gears are meshingly connected with the toothed belt; one end of the shaft center of the two groups of belt gears is fixedly connected with one end of the shaft center of the rotating disc;

[0030] A second motor, an output end of the second motor is fixedly connected with the other end of the shaft center of the group of belt gears.

[0031] Preferably, the stirring structure is arranged on the side of the first extrusion plate away from the second extrusion plate, and is used for stirring the broken molten salt.

[0032] Preferably, the stirring structure comprises:

[0033] A third gear is arranged on the side of the first extrusion plate away from the second extrusion plate in parallel;

[0034] A plurality of stirring rods penetrate through the first extrusion plate and are slidingly connected with the first extrusion plate;

[0035] A rack is arranged on the edge of the third gear and is meshingly connected with the third gear;

[0036] An electric push rod, an output end of the electric push rod is fixedly connected with the rack.

[0037] Preferably, the heating assembly comprises:

[0038] A heat-insulating shell is sleeved on the outer side of the outer furnace;

[0039] An electric heating pipe is arranged between the outer furnace and the heat-insulating shell.

[0040] Preferably, the heat exchange assembly is connected with the first extrusion plate, is used for heat exchange with the molten salt, and comprises:

[0041] An inner container penetrates through the center of the first extrusion plate and is slidingly connected with the first extrusion plate;

[0042] A liquid inlet pipe is in communication with the inner container at one end and is in communication with the outside at the other end;

[0043] A steam outlet pipe, one end of which is communicated with the inner container and the other end of which is communicated with the outside.

[0044] The utility model discloses beneficial effect lies in: through operation movement structure, movement structure will push the mobile plate and move to the outside, thereby providing a space for the crushing of molten salt below the second extrusion plate, so that the crushing is more thorough, subsequently operating crushing structure, crushing structure will drive the second extrusion plate and move down first, make the upper end surface of second extrusion plate and the lowest end of space even, drive first extrusion plate and move to the direction of second extrusion plate, can extrude molten salt in heating cavity, and the molten salt is crushed, realize the crushing of whole molten salt before melting, avoid the waste of resources, heating cavity can move along with the movement of second extrusion plate. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is structure schematic diagram of the utility model;

[0046] Figure 2 It is Figure 1 It is internal connecting structure cutaway perspective schematic diagram;

[0047] Figure 3 It is Figure 2 It is connecting structure bottom perspective schematic diagram;

[0048] Figure 4 It is Figure 2 It is part connecting structure perspective enlarged schematic diagram;

[0049] Figure 5 It is Figure 4 It is part connecting structure perspective enlarged schematic diagram;

[0050] Figure 6 It is Figure 5 It is connecting structure bottom perspective schematic diagram;

[0051] Figure 7 It is Figure 5 It is part connecting structure perspective enlarged schematic diagram;

[0052] Figure 8 It is Figure 6 It is part connecting structure perspective enlarged schematic diagram;

[0053] Figure 9 It is Figure 3 It is part connecting structure perspective enlarged schematic diagram;

[0054] Figure 10 It is Figure 9 It is part connecting structure perspective enlarged schematic diagram;

[0055] Figure 11 It isFigure 9 Schematic view of the connection structure from the back;

[0056] Figure 12 For Figure 11 Schematic view of the connection structure from the back;

[0057] In the figure: 1, outer furnace, 2, inner container, 3, liquid inlet pipe, 4, steam outlet pipe, 5, heat insulation shell, 6, electric heating pipe, 7, first extrusion plate, 8, annular slide rail, 9, first hydraulic cylinder, 10, second extrusion plate, 11, second hydraulic cylinder, 12, rotating disc, 13, support ring, 14, first gear, 15, second gear, 16, first motor, 17, third gear, 18, stirring rod, 19, rack, 20, electric push rod, 21, partition plate, 22, protective shell, 23, moving plate, 24, connecting piece, 25, groove plate, 26, rotating piece, 27, transmission piece, 28, second motor. DETAILED DESCRIPTION

[0058] The utility model will be further described below in combination with the drawings:

[0059] This embodiment:

[0060] Please refer to Figures 1-12 In this embodiment: a molten salt phase change heat storage device, comprising: outer furnace 1, heating assembly, crushing structure and moving structure.

[0061] In this embodiment, one end of the outer furnace 1 is in communication with the protective shell 22; the heating assembly is sleeved on the outside of the outer furnace 1, for heating the inside of the outer furnace 1.

[0062] In this embodiment, a box door is installed on the back side of the protective shell 22, and there is sealing between the box door and the protective shell 22.

[0063] The crushing structure is arranged in the inside of the outer furnace 1, for crushing the molten salt; the crushing structure comprises: a first extrusion plate 7 and a second extrusion plate 10, and a plurality of protrusions are arranged on the side adjacent to the first extrusion plate 7 and the second extrusion plate 10; a heating cavity is formed between the first extrusion plate 7, the second extrusion plate 10 and the outer furnace 1.

[0064] In this embodiment, the plurality of protrusions are used to improve the efficiency of crushing; the first extrusion plate 7, the second extrusion plate 10 and the protrusions are all made of high-temperature-resistant heat insulation materials, which can be steel or other materials, as long as the working conditions are met; rubber rings are arranged on the edges of the first extrusion plate 7 and the second extrusion plate 10, for sealing, and the rubber rings are made of high-temperature-resistant rubber.

[0065] The moving structure is connected with the protective shell 22 and is used for providing a space for crushing; the moving structure comprises two groups of moving plates 23 arranged in the interior of the protective shell 22 and used for moving the moving plates 23 to provide a space for crushing.

[0066] In this embodiment, the two groups of moving plates 23 form a circular ring after being connected, and the inner diameter of the circular ring is the same as the outer diameter of the second extrusion plate 10.

[0067] By operating the moving structure, the moving structure pushes the moving plates 23 to move outward, thereby providing a space below the second extrusion plate 10 for the crushing of the molten salt, so that the crushing is more complete, and then the crushing structure is operated, the crushing structure drives the second extrusion plate 10 to move downward first, so that the upper end surface of the second extrusion plate 10 is flush with the lowest end of the space, and then drives the first extrusion plate 7 to move toward the second extrusion plate 10, so as to extrude the molten salt in the heating cavity and crush the molten salt, thereby realizing the crushing of the whole molten salt before melting and avoiding the waste of resources; the heating cavity can move along with the movement of the second extrusion plate 10.

[0068] As shown in Figure 3 and Figure 4 , the crushing structure comprises an annular slide rail 8, a first hydraulic cylinder 9, a second hydraulic cylinder 11, a supporting assembly and a rotating assembly.

[0069] The annular slide rail 8 is arranged on the side of the first extrusion plate 7 away from the second extrusion plate 10 and is fixedly connected with the first extrusion plate 7; the surface of the annular slide rail 8 is provided with a slide; the output end of the first hydraulic cylinder 9 is provided with a sliding block, and the sliding block is arranged in the slide, so that the first hydraulic cylinder 9 is slidably connected with the annular slide rail 8 through the sliding block.

[0070] In this embodiment, the model of the first hydraulic cylinder 9 is selected according to actual needs; the working conditions are met; the output end of the first hydraulic cylinder 9 can push the annular slide rail 8 to move vertically, and when the annular slide rail 8 rotates, the sliding between the sliding block and the annular slide rail 8 is used, so as not to hinder the rotation of the annular slide rail 8.

[0071] The output end of the second hydraulic cylinder 11 is fixedly connected with the side of the second extrusion plate 10 away from the first extrusion plate 7.

[0072] In this embodiment, the model of the second hydraulic cylinder 11 is selected according to actual needs; the working conditions are met; the output end of the second hydraulic cylinder 11 can push the second extrusion plate 10 to move vertically, and when the second extrusion plate 10 moves downward, the longitudinal length of the heating chamber can be increased.

[0073] The supporting assembly is fixedly connected with the end of the second hydraulic cylinder 11 away from the output end.

[0074] The support assembly can support the rotation of the second hydraulic cylinder 11.

[0075] The rotating assembly is fixedly connected to the outer side of the second hydraulic cylinder 11.

[0076] In this embodiment, the second hydraulic cylinder 11 can be rotated by the rotating assembly, thereby driving the second extrusion plate 10 to rotate, and driving the crushed molten salt to rotate, so that the molten salts rub against each other, further improving the crushing effect.

[0077] When crushing is needed, the first hydraulic cylinder 9 is adjusted, the output end of the first hydraulic cylinder 9 pushes the second extrusion plate 10 to move downward, so that the upper end surface of the second extrusion plate 10 is flush with the lowest end of the space; then the second hydraulic cylinder 11 is adjusted, the output end of the second hydraulic cylinder 11 pushes the first extrusion plate 7 to move towards the second extrusion plate 10, so that the molten salt in the heating cavity can be extruded and crushed, and then the second hydraulic cylinder 11 can be rotated by the rotating assembly, thereby driving the second extrusion plate 10 to rotate, and driving the crushed molten salt to rotate, so that the molten salts rub against each other, further improving the crushing effect, and the support assembly can support the rotation of the second hydraulic cylinder 11.

[0078] As shown in Figure 9 and Figure 10 , the support assembly comprises a rotating disc 12 and a support ring 13.

[0079] Specifically, the rotating disc 12 is fixedly connected to one end of the second hydraulic cylinder 11 away from the output end; the support ring 13 is sleeved on the outer side of the rotating disc 12 and is rotationally connected to the rotating disc 12; the outer side of the support ring 13 is fixedly connected to the protective shell 22.

[0080] In this embodiment, the rotating disc 12 and the support ring 13 are made of high-strength steel material and can support the crushing of the molten salt; the support ring 13 can limit the rotation position of the rotating disc 12; the side of the rotating disc 12 away from the second hydraulic cylinder 11 is in contact with the protective shell 22, and the rotating disc 12 is supported by the protective shell 22.

[0081] As shown in Figure 9 and Figure 10 , the rotating assembly comprises a first gear 14, a second gear 15 and a first motor 16.

[0082] The inner wall of the first gear 14 is fixedly connected to the outer side of the second hydraulic cylinder 11.

[0083] In this embodiment, the first gear 14 can drive the second hydraulic cylinder 11 to rotate.

[0084] The edge of the second gear 15 is meshingly connected to the edge of the first gear 14; the output end of the first motor 16 is fixedly connected to the shaft center of the second gear 15.

[0085] In this embodiment, the model of the first motor 16 is selected according to actual requirements, and the working conditions are met; the output end of the first motor 16 drives the second gear 15 to rotate, and the second gear 15 simultaneously drives the first gear 14 to rotate.

[0086] As shown in Figure 3 , the molten salt phase change heat storage device further comprises a partition plate 21; the partition plate 21 is arranged in the interior of the protective shell 22 and is used for separating the broken space.

[0087] In this embodiment, the partition plate 21 and the protective shell 22 are in contact with the periphery of the moving plate 23, so as to prevent the molten salt after being broken from leaking.

[0088] As shown in Figure 11 and Figure 12 , the moving structure comprises a groove plate 25, two groups of connecting members 24, two groups of rotating members 26, a transmission member 27 and a second motor 28.

[0089] Specifically, the groove plate 25 is arranged in the interior of the protective shell 22 and is located on the side of the partition plate 21 away from the first extrusion plate 7; the surface of the groove plate 25 is provided with a sliding groove; and the two ends of each group of connecting members 24 are fixedly connected with the groove plate 25 and the outer side of the moving plate 23 respectively.

[0090] In this embodiment, when the groove plate 25 moves, it will drive the moving plate 23 to move through the connecting members 24.

[0091] Each group of rotating members 26 is composed of a rotating disc and a cylindrical pin, and the surface edge position of the rotating disc is fixedly connected with the cylindrical pin; the cylindrical pin is arranged in the sliding groove, so that the rotating disc is slidingly connected with the groove plate 25 through the cylindrical pin.

[0092] In this embodiment, when the rotating disc rotates, it will drive the cylindrical pin to make a circular motion along the center of the rotating disc, and through the sliding between the cylindrical pin and the sliding groove, the groove plate 25 is pushed to move horizontally.

[0093] The transmission member 27 is composed of a toothed belt and two groups of belt gears, the edges of the two groups of belt gears are meshingly connected with the toothed belt, and the shaft centers of the two groups of belt gears are fixedly connected with the shaft center of one end of the rotating disc.

[0094] In this embodiment, the moving directions of the two groups of belt gears are the same, and when one group of belt gears rotates, it will drive the other group of belt gears to rotate in the same direction through the toothed belt.

[0095] The output end of the second motor 28 is fixedly connected with the shaft center of the other end of one group of belt gears.

[0096] In this embodiment, the second motor 28 itself has self-locking capability; the model of the second motor 28 is selected according to actual requirements, and the working conditions are met.

[0097] When space is needed to be provided, the second motor 28 is started, the output end of the second motor 28 drives a group of belt gears to rotate, the group of belt gears drives another group of belt gears to rotate in the same direction through the toothed belt; the two groups of belt gears drive two groups of rotating discs to rotate at the same time, the rotating discs drive the cylindrical pins to make circular motion along the center of the rotating discs, and push the groove plate 25 to move horizontally outward through the sliding between the cylindrical pins and the sliding groove; the groove plate 25 drives the moving plate 23 to move through the connecting piece 24, and provides space for the crushing of the molten salt.

[0098] The molten salt phase change heat storage device further comprises a stirring structure; the stirring structure is arranged on the side of the first extrusion plate 7 away from the second extrusion plate 10, and is used for stirring the crushed molten salt.

[0099] As shown in Figure 7 , the stirring structure comprises a third gear 17, a plurality of stirring rods 18, a rack 19 and an electric push rod 20.

[0100] Among them, the third gear 17 is arranged in parallel on the side of the first extrusion plate 7 away from the second extrusion plate 10; the plurality of stirring rods 18 penetrate through the first extrusion plate 7 and are in sliding connection with the first extrusion plate 7.

[0101] In this embodiment, when the third gear 17 rotates, it will drive the plurality of stirring rods 18 to rotate at the same time, and the stirring rods 18 will stir the crushed molten salt, so that the heating during melting is more uniform; in this process, the stirring rods 18 will also drive the first extrusion plate 7 to rotate, and when the first extrusion plate 7 moves vertically, it will move along the outer wall of the stirring rods 18 and will not move the stirring rods 18.

[0102] The rack 19 is arranged on the edge of the third gear 17 and is in meshing connection with the third gear 17; the output end of the electric push rod 20 is fixedly connected with the rack 19.

[0103] In this embodiment, the model of the electric push rod 20 is selected according to actual needs, and it is only required to meet the working conditions; the output end of the electric push rod 20 can drive the rack 19 to move, and the rack 19 will make the third gear 17 rotate.

[0104] As shown in Figure 2 , the heating assembly comprises a heat insulation shell 5 and an electric heating pipe 6.

[0105] Specifically, the heat insulation shell 5 is sleeved on the outside of the outer furnace 1; the electric heating pipe 6 is arranged between the outer furnace 1 and the heat insulation shell 5.

[0106] In this embodiment, the electric heating pipe 6 is annular and is a common device on the market, which is prior art and will not be described in detail here; the model of the electric heating pipe 6 is selected according to actual needs, and it is only required to meet the working conditions.

[0107] As Figure 8 shown, the molten salt phase change heat storage device further comprises: a heat exchange assembly; the heat exchange assembly is connected with the first extrusion plate 7; for heat exchange with the molten salt; the heat exchange assembly comprises: the inner container 2, the liquid inlet pipe 3 and the steam outlet pipe 4.

[0108] Among them, the inner container 2 penetrates the center of the first extrusion plate 7, and is in sliding connection with the first extrusion plate 7.

[0109] In this embodiment, the inner container 2 is filled with a heat exchange medium.

[0110] One end of the liquid inlet pipe 3 is in communication with the inner container 2, and the other end is in communication with the outside; one end of the steam outlet pipe 4 is in communication with the inner container 2, and the other end is in communication with the outside.

[0111] In this embodiment, the medium is introduced into the inner container 2 through the liquid inlet pipe 3; the generated gas is discharged through the steam outlet pipe 4.

[0112] Working principle:

[0113] The molten salt phase change heat storage device in use, first adjust the second hydraulic cylinder 11, so that the upper end surface of the second extrusion plate 10 and the lowest end of the space is flat, at this time, through the box door behind the protective shell 22, to the second extrusion plate 10 on the addition of loose molten salt, then, the second extrusion plate 10 is moved back to the original position, through the heating assembly can be heated to the molten salt, along with the melting of the molten salt, and store heat, when the need to release heat, through the liquid inlet pipe 3 to the inner container 2 medium; the medium is in contact with the molten salt through the inner container 2, heat exchange, the generated steam through the steam outlet pipe 4 discharge.

[0114] And in the process of releasing heat, the molten salt will solidify into a whole, at this time, adjust the first hydraulic cylinder 9, the output end of the first hydraulic cylinder 9 pushes the second extrusion plate 10 to move downward, so that the upper end surface of the second extrusion plate 10 and the lowest end of the space is flat; then adjust the second hydraulic cylinder 11, the output end of the second hydraulic cylinder 11 pushes the first extrusion plate 7 to move towards the direction of the second extrusion plate 10, can be extruded to the molten salt in the heating cavity, the molten salt is broken, then, through the rotating assembly can make the second hydraulic cylinder 11 rotation, thereby driving the second extrusion plate 10 rotation, and drive the broken molten salt rotation, so that the molten salt between each other friction, further improve the crushing effect, and the supporting assembly can support the rotation of the second hydraulic cylinder 11, realize the broken of the whole molten salt before melting, avoid the waste of resources.

[0115] Before this, start the second motor 28, the output end of second motor 28 drives a group of belt gears to rotate, and this group of belt gears drives another group of belt gears to rotate in the same direction through the toothed belt; two groups of belt gears drive two groups of rotating discs to rotate simultaneously, and the rotating disc drives the cylindrical pin to make circular motion along the center of the rotating disc, and through the sliding between the cylindrical pin and the sliding groove, pushes the groove plate 25 to move horizontally to the outside; the groove plate 25 will drive the moving plate 23 to move through the connecting piece 24, and provides space for the crushing of molten salt.

[0116] After the abutment of two groups of moving plates 23, the crushed molten salt is extruded to the middle position, and crushing is carried out here; after the above operation is carried out for many times, the crushing of molten salt is completed, and then heat storage is carried out again by using the heating assembly, and the use of the device is completed.

[0117] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A molten salt phase change thermal storage device, characterized by: Include: The outer stove (1), one end of the outer stove (1) is communicated with the protective shell (22); Heating assembly, sleeve jointed outside the outer stove (1), for heating the inside of the outer stove (1); Crushing structure, provided in the inside of the outer stove (1), for crushing molten salt; The crushing structure comprises: a first extrusion plate (7) and a second extrusion plate (10), a plurality of groups of protrusions are provided on the side of the first extrusion plate (7) and the second extrusion plate (10) adjacent to each other;The first extrusion plate (7), the second extrusion plate (10) and the outer stove (1) form a heating cavity; The moving structure is connected with the protective shell (22), and is used for providing space for crushing;The moving structure comprises: two groups of moving plates (23), which are provided in the inside of the protective shell (22) and are used for moving the moving plates (23) to provide space for crushing.

2. The molten salt phase change thermal storage device of claim 1, wherein: The crushing structure comprises: Annular slide rail (8), provided on the side of the first extrusion plate (7) away from the second extrusion plate (10), and fixedly connected with the first extrusion plate (7);The surface of the annular slide rail (8) is provided with a slide; The output end of the first hydraulic cylinder (9) is provided with a sliding block, and the sliding block is arranged in the slide, so that the first hydraulic cylinder (9) is slidably connected with the annular slide rail (8) through the sliding block; The output end of the second hydraulic cylinder (11) is fixedly connected with the side of the second extrusion plate (10) away from the first extrusion plate (7); The support assembly is fixedly connected with the end of the second hydraulic cylinder (11) away from the output end; The rotating assembly is fixedly connected with the outside of the second hydraulic cylinder (11).

3. The molten salt phase change thermal storage device of claim 2, wherein: The support assembly comprises: The rotating disc (12) is fixedly connected with the end of the second hydraulic cylinder (11) away from the output end; The support ring (13) is sleeved outside the rotating disc (12) and is rotatably connected with the rotating disc (12);The outside of the support ring (13) is fixedly connected with the protective shell (22).

4. The molten salt phase change thermal storage device of claim 2, wherein: The rotating assembly comprises: The inner wall of the first gear (14) is fixedly connected with the outside of the second hydraulic cylinder (11); The edge of the second gear (15) is meshingly connected with the edge of the first gear (14); The output end of the first motor (16) is fixedly connected with the shaft center of the second gear (15).

5. The molten salt phase change thermal storage apparatus according to claim 1, characterized by: Also includes: The partition plate (21) is arranged in the inside of the protective shell (22), and is used for separating the space for crushing.

6. The molten salt phase change thermal storage device of claim 5, wherein: The moving structure comprises: The groove plate (25) is arranged in the inside of the protective shell (22) and is located on the side of the partition plate (21) away from the first extrusion plate (7);The surface of the groove plate (25) is provided with a sliding groove; Two groups of connecting pieces (24), the two ends of each connecting piece (24) are fixedly connected with the outside of the groove plate (25) and the moving plate (23) respectively; Two groups of rotating members (26), each group of rotating members (26) is composed of a rotating disc and a cylindrical pin, the surface edge of the rotating disc is fixedly connected with the cylindrical pin; the cylindrical pin is arranged in the sliding groove, so that the rotating disc is slidably connected with the groove plate (25) through the cylindrical pin; A transmission member (27) is composed of a toothed belt and two groups of belt gears, the edges of the two groups of belt gears are meshedly connected with the toothed belt, and one end of the shaft centers of the two groups of belt gears is fixedly connected with one end of the shaft center of the rotating disc; A second motor (28) is fixedly connected with the other end of the shaft center of one group of the belt gears.

7. The molten salt phase change thermal storage apparatus of claim 1, wherein: Further comprising: A stirring structure is arranged on the side of the first extrusion plate (7) away from the second extrusion plate (10) and used for stirring the broken molten salt.

8. The molten salt phase change thermal storage device of claim 7, wherein: The stirring structure comprises: A third gear (17) is arranged on the side of the first extrusion plate (7) away from the second extrusion plate (10); A plurality of stirring rods (18) penetrate through the first extrusion plate (7) and are slidably connected with the first extrusion plate (7); A rack (19) is arranged on the edge of the third gear (17) and is meshedly connected with the third gear (17); An electric push rod (20) is fixedly connected with the rack (19).

9. The molten salt phase change thermal storage apparatus of claim 1, wherein: The heating assembly comprises: A heat-insulating shell (5) is sleeved on the outside of the outer furnace (1); An electric heating pipe (6) is arranged between the outer furnace (1) and the heat-insulating shell (5).

10. The molten salt phase change thermal storage apparatus according to claim 1, characterized by: Further comprising: A heat exchange assembly is connected with the first extrusion plate (7); The heat exchange assembly is used for heat exchange with the molten salt; the heat exchange assembly comprises: An inner container (2) penetrates through the center of the first extrusion plate (7) and is slidably connected with the first extrusion plate (7); A liquid inlet pipe (3) is in communication with the inner container (2) at one end and is in communication with the outside at the other end; A steam outlet pipe (4) is in communication with the inner container (2) at one end and is in communication with the outside at the other end.

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