Electric heating fused salt heat storage equipment and working method thereof

Abstract

The invention belongs to the technical field of fused salt heat storage, and discloses electric heating fused salt heat storage equipment and a working method thereof. The electric heating fused salt heat storage equipment comprises a supporting plate, a base and a shell. Wherein the supporting plate is provided with moving wheels and a positioning supporting assembly; the supporting plate is provided with supporting columns, and each supporting column is provided with a sliding groove. A sliding block is installed in the sliding groove in a sliding mode and provided with a supporting rod and an elastic component. Mounting grooves are formed in the supporting plates, buffer blocks are mounted in the mounting grooves, elastic parts are arranged between the buffer blocks, and buffer rods are hinged to the buffer blocks; a base is installed on the supporting rod, a shell is installed in the base through a rotating shaft, and a stirring rod is arranged in the shell. According to the technical scheme, movement and position adjustment can be carried out more conveniently, the anti-vibration capacity in work is enhanced, and the heating efficiency of molten salt is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of molten salt thermal energy storage, and particularly relates to an electric heating molten salt thermal energy storage device and its working method. Background Technique

[0002] At present, the "coal-to-electricity" project of replacing coal-fired boilers with electric heating is being vigorously promoted. In view of the large peak-valley difference in power supply between day and night, the government has promulgated preferential policies for low-valley electricity consumption at night, encouraging the use of cheap low-valley electricity to heat heat storage materials to store thermal energy in order to achieve "peak shaving and valley filling". Further explanatory, the electric heat storage device uses the valley electricity (i.e., valley time) at night to heat the heat storage medium, and after the medium stores heat, it gradually transfers the heat to other media such as hot water through the heat exchange tubes; the heat storage medium is generally molten salt; the heat storage device usually uses a heat storage tank, and in order to reduce heat loss, the bottom, wall and top of the tank all have a heat insulation structure with good heat insulation performance.

[0003] However, in the existing technical solutions, the heat storage tanks for electric heating molten salt thermal energy storage are large in volume, heavy in weight, and often irregular in shape. When it is necessary to move or adjust the position, it is difficult to complete by manpower alone, and usually it is necessary to rely on a crane, a forklift or other special moving tools to carry out the displacement operation, which increases the cost and complexity of moving and reduces the convenience of moving; especially in some places with limited space or complex environment, the movement of the heat storage tank has become a difficult task; in addition, the heat storage tank may be subjected to some large vibrations during the movement process. These vibrations will not only cause certain damage to the structure of the heat storage tank, reducing its service life, but also may cause the connection between the heat storage tank and the surrounding equipment to become loose, thereby affecting the stability and safety of the entire system; furthermore, the molten salt heating efficiency of the existing electric heating molten salt thermal energy storage equipment is relatively low. In summary, there are still some defects in the existing technical solutions of the electric heating molten salt thermal energy storage tank in terms of moving convenience, stability and molten salt heating efficiency, and it is urgent to develop a new electric heating molten salt thermal energy storage device. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric heating molten salt thermal energy storage device and its working method to solve one or more of the above-mentioned technical problems. The technical solution of the present invention provides a new device structure, which can be moved and adjusted more conveniently while ensuring the heat storage performance, and at the same time enhances its anti-vibration ability during operation, ensuring that the heat storage tank can operate more stably and reliably; in addition, the heating efficiency of the molten salt is also improved.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides an electric heating molten salt thermal energy storage device, including: a support plate, a base and a housing; wherein, Moving wheels and a positioning and supporting assembly are installed at the bottom of the support plate; The support plate is symmetrically provided with support columns along a preset central plane, and sliding grooves are formed in each support column; a slider is slidably installed in the sliding groove, a support rod is installed on one side of the slider, an elastic member is installed on the other side of the slider, and one end of the elastic member away from the slider is connected to the bottom wall of the sliding groove; An installation groove is formed in the support plate, buffer blocks are symmetrically and slidably installed in the installation groove along the central plane, an elastic member is arranged between the buffer blocks, and two ends of the elastic member are respectively connected to the two buffer blocks. A buffer rod is hingedly arranged on each buffer block, and one end of the buffer rod away from the buffer block is hinged to the slider; The base is installed at one end of the support rod away from the slider, the housing is rotatably installed in the base through a rotating shaft, and a stirring rod is rotatably arranged in the housing; a driving assembly for driving the housing and the stirring rod to rotate is installed on the base.

[0006] A further improvement of the technical solution of the present invention lies in that, The positioning support assembly includes a telescopic member and a positioning support plate; One end of the telescopic member is connected to the support plate, and the positioning support plate is arranged at the other end of the telescopic member.

[0007] A further improvement of the technical solution of the present invention lies in that, The driving assembly includes a driving member and a transmission assembly; wherein, The driving member is installed on the base, a driving shaft is installed at the output end of the driving member, and one end of the driving shaft away from the driving member extends into the housing; the driving shaft is rotatably connected to the housing, and the stirring rod is installed on the driving shaft; The transmission assembly includes a connection unit, a driven shaft, a half gear and a driven gear; wherein, the driven shaft is rotatably arranged in the base; the half gear is installed on the driven shaft, the driven gear is installed on the rotating shaft, and the half gear can be meshed with the driven gear; the connection unit is installed on the driving shaft, and one end of the connection unit away from the driving shaft is connected to the driven shaft.

[0008] A further improvement of the technical solution of the present invention lies in that, A scraper is further installed at one end of the stirring rod away from the driving shaft, and the scraper is attached to the inner wall of the housing.

[0009] A further improvement of the technical solution of the present invention lies in that, A buffer assembly is further installed at the bottom of the base, and one end of the buffer assembly away from the base is connected to the support column.

[0010] A further improvement of the technical solution of the present invention lies in that The buffer assembly includes a pressure rod, a pressure plate and a buffer chamber; wherein, One end of the pressure rod is connected to the base, and the other end of the pressure rod is connected with the pressure plate; both ends of the pressure plate are respectively hinged with the buffer chamber; A buffer plate is slidably installed in the buffer chamber, a pull rod is installed on the buffer plate, and one end of the pull rod away from the buffer plate is hinged with the support column; an elastic unit is sleeved on the pull rod; one end of the elastic unit is connected with the buffer plate, and the other end of the elastic unit is connected with the side wall of the buffer chamber.

[0011] A further improvement of the technical solution of the present invention lies in that An electric heater is further arranged in the shell, and the electric heater is used to heat the molten salt in the shell by using the night valley electricity.

[0012] A further improvement of the technical solution of the present invention lies in that A temperature sensor is further arranged in the shell, and the temperature sensor is used to monitor the temperature of the molten salt in the shell.

[0013] A further improvement of the technical solution of the present invention lies in that A protective frame is further installed on the base.

[0014] The present invention provides a working method of an electric heating molten salt heat storage device, including: When the electric heating molten salt heat storage device is transferred, the electric heating molten salt heat storage device is moved to a designated position through the installed moving wheels; after moving to the designated position, the positioning support assembly is contacted with the ground to fix and support the electric heating molten salt heat storage device; wherein, when shaking occurs during the moving process, the shell and the base move downward under the action of pressure, and when the base moves downward, the slider is driven to move downward through the support rod, the slider moves downward to squeeze the elastic component, and the elastic component is compressed to buffer the impact force of the vibration on the base; the slider moves downward to drive the buffer rod to compress the buffer block, and the buffer blocks slide towards each other and squeeze the elastic member, and the elastic member is squeezed to buffer the impact force generated by the vibration; When heating the molten salt in the shell, the driving assembly drives the shell and the stirring rod to rotate; wherein, the rotation of the stirring rod realizes the stirring of the molten salt in the shell, and the rotation of the shell realizes the turning of the molten salt in the shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention specifically discloses an electric heating molten salt heat storage device, which can be moved and adjusted in position more conveniently while ensuring the heat storage performance, and at the same time enhances its anti-vibration ability during operation, ensuring that the heat storage tank can operate more stably and reliably; in addition, the heating efficiency of the molten salt is also improved. Specifically and explanatorily, the present invention combines a stirring rod with a rotatable housing to form a new heating and mixing means, significantly improving the heating efficiency of the molten salt; wherein, the stirring rod is rotatably arranged in the housing, and the function of the stirring rod is to continuously stir the molten salt during the heating process of the molten salt, making it heat more evenly, thereby improving the heating efficiency. Through stirring, the problems of local overheating or uneven temperature of the molten salt can be effectively avoided, enabling the molten salt to reach the required temperature faster and more evenly; in addition, the housing is rotatably installed in the base through a rotating shaft, and the rotation of the housing can further promote the mixing and uniform heating of the molten salt. Especially in combination with the action of the stirring rod, a more efficient heating and mixing effect can be formed. The present invention designs a moving wheel and a positioning support assembly, taking into account both the mobility and stability of the device, meeting the usage requirements in different scenarios; wherein, moving wheels are installed at the bottom of the support plate, enabling the entire device to be easily moved and transported, providing great convenience when the position of the device needs to be changed or maintenance is required; in addition, in cooperation with the moving wheels, a positioning support assembly is also installed on the support plate. When the device is moved to the designated position, the device can be fixed through the positioning support assembly to ensure the stability of the device during operation. The present invention uses buffer designs such as elastic components and buffer blocks to effectively enhance the anti-seismic and buffering capabilities of the device, improving the reliability and service life of the device; wherein, support columns are symmetrically arranged along the preset central plane on the support plate, and sliding grooves are opened on the support columns. Sliders are slidably installed in the sliding grooves, enabling the device to absorb and disperse forces through the sliding of the sliders when subjected to external forces, thereby enhancing the stability of the device; in addition, the designs of the elastic components and buffer blocks further enhance the anti-seismic and buffering capabilities of the device, enabling the device to remain stable when subjected to impacts or vibrations. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art; obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an electric heating molten salt heat storage device in an embodiment of the present invention.

[0018] Figure 2In an embodiment of the present invention, it is a cross-sectional schematic view of a buffer chamber in an electric heating molten salt heat storage device.

[0019] Figure 3 In an embodiment of the present invention, it is a structural schematic view of a stirring rod in an electric heating molten salt heat storage device.

[0020] Figure 4 In an embodiment of the present invention, it is a structural schematic view of a half gear in an electric heating molten salt heat storage device.

[0021] The explanations of the reference numerals in the figure are as follows: 1, support plate; 2, moving wheel; 3, telescopic member; 4, positioning support plate; 5, installation groove; 6, buffer block; 7, elastic member; 8, buffer rod; 9, slider; 10, elastic component; 11, support column; 12, pull rod; 13, buffer chamber; 14, elastic unit; 15, buffer plate; 16, pressing plate; 17, pressing rod; 18, base; 19, protective frame; 20, driving member; 21, housing; 22, driving shaft; 23, connecting unit; 24, driven shaft; 25, half gear; 26, driven gear; 27, rotating shaft; 28, stirring rod; 29, scraping plate. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments of the technical solutions are some, but not all, of the embodiments of the present invention.

[0023] Based on the technical solutions disclosed in the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0024] Please refer to Figures 1 to 4 , as an embodiment of the present invention, there is provided an electric heating molten salt heat storage device, including: a support plate 1 and a base 18; wherein, Moving wheels 2 are installed at the bottom of the support plate 1, and a positioning support assembly is further provided on one side of the moving wheels 2; in a further preferred technical solution, the positioning support assembly includes a telescopic member 3, one end of the telescopic member 3 is connected to the support plate 1, and the other end is connected to a positioning support plate 4; Support columns 11 are symmetrically arranged on the support plate 1. A chute is formed on the side wall of the support column 11. A slider 9 is slidably installed in the chute. A support rod is installed on one side of the slider 9, and an elastic member 10 is installed on the other side of the slider 9. The end of the elastic member 10 away from the slider 9 is fixedly connected to the bottom wall of the chute; The support plate 1 is provided with an installation groove 5. Buffer blocks 6 are symmetrically and slidably installed in the installation groove 5. An elastic member 7 is arranged between the buffer blocks 6. The elastic member 7 is connected to the buffer blocks 6. One side of the buffer block 6 is hinged with a buffer rod 8. The end of the buffer rod 8 away from the buffer block 6 is hinged to the bottom of the slider 9; The end of the support rod away from the slider 9 is installed with a base 18; A rotating shaft 27 is installed on the side wall of the base 18. The end of the rotating shaft 27 away from the base 18 is installed with a housing 21. A stirring rod 28 is arranged in the housing 21; In a further preferred technical solution, a protective frame 19 is also installed on the base 18; An electric heater, a temperature sensor, etc. are arranged in the housing 21; A driving assembly is installed on the base 18; Among them, the driving assembly may include a driving member 20. The driving member 20 is installed on the base 18. The output end of the driving member 20 is installed with a driving shaft 22. The end of the driving shaft 22 away from the driving member 20 penetrates through the base 18 and extends into the housing 21, and the driving shaft 22 is rotatably connected to the housing 21. The stirring rod 28 is installed on the driving shaft 22. A transmission assembly is installed on the base 18. The transmission assembly includes a driven shaft 24. The driven shaft 24 is rotatably connected to the side wall of the base 18. A half gear 25 is installed on the driven shaft 24. A driven gear 26 is arranged on one side of the half gear 25. The driven gear 26 is installed on the rotating shaft 27. A connecting unit 23 is installed on the driving shaft 22. The end of the connecting unit 23 away from the driving shaft 22 is connected to the driven shaft 24; In a further preferred technical solution, a buffer assembly is also installed at the bottom of the base 18. The end of the buffer assembly away from the base 18 is connected to the support column 11.

[0025] In the technical solution provided by the embodiment of the present invention, when the device is transferred, the device is moved to a specified position through the installed moving wheels. After moving to the specified position, the telescopic member drives the positioning support plate to move downward, so that the positioning support plate contacts the ground to fix the device, thereby improving the stability of the device; when encountering a bumpy road surface during the movement, the device will shake. At this time, the housing and the base provided will move downward under the action of pressure. The downward movement of the base drives the slider at one end of the support rod to move downward. The downward movement of the slider squeezes the elastic member on one side, and the elastic member is compressed, thereby buffering the impact force of the vibration on the base. At the same time, the downward movement of the slider will drive the buffer rod to compress the buffer block at one end. The opposite sliding of the buffer blocks will squeeze the elastic member between them, and the elastic member is squeezed, thereby further buffering the impact force generated by the vibration and playing a good buffering and protecting role for the housing. In the preferred solution, the buffer assembly provided can further disperse the pressure generated by the vibration; when heating the molten salt in the housing, the driving member provided drives the driving shaft to rotate. The rotation of the driving shaft drives the stirring rod to rotate, and the stirring rod rotates to stir the molten salt in the housing to make it mix evenly, thereby improving the heating efficiency; in addition, the provided scraper can scrape off the molten salt adhering to the inner wall. During this process, the rotation of the driving shaft drives the driven shaft to rotate through the connecting unit. The rotation of the driven shaft drives the half gear to rotate. The rotation of the half gear meshes with the driven gear to drive the rotating shaft to rotate. The rotation of the rotating shaft drives the housing to rotate in the housing, and the rotation of the housing can drive the molten salt in the housing to rotate, so that the molten salt keeps turning, which can further improve the heating efficiency of the molten salt.

[0026] In a specific exemplary embodiment of the present invention, the elastic member 10 and the elastic member 7 can both be spring shock absorbers or rubber shock absorbers, etc., and no specific description is made here. Further, the driving member 20 can be a stepping motor or a servo motor, etc., and no specific description is made here. Further, the connecting unit 23 can be a gear set or a pulley set, etc., and no specific description is made here. Further, the telescopic member 3 can be an electric telescopic rod or an electric push rod, etc., and no specific description is made here.

[0027] In a specific embodiment of the present invention, the buffer assembly includes a pressure rod 17. One end of the pressure rod 17 is connected to the base 18, and the other end is connected to a pressure plate 16; both ends of the pressure plate 16 are hinged with a buffer chamber 13. A buffer plate 15 is slidably installed in each buffer chamber 13. A pull rod 12 is installed on the buffer plate 15. One end of the pull rod 12 away from the buffer plate 15 is hinged to the side wall of the support column 11. An elastic unit 14 is sleeved on the pull rod 12. One end of the elastic unit 14 is connected to the buffer plate 15, and the other end is connected to the side wall of the buffer chamber 13.

[0028] In the technical solution of the embodiment of the present invention, when the device is shaken, it will vibrate. When the housing moves downward, the housing drives the pressure rod to move downward, the pressure rod drives the pressing plate to move downward, and the pressing plate drives the buffer cavity to rotate downward. During this process, the buffer cavity rotates, and the buffer cavity and the buffer plate cooperate to compress the elastic unit connected thereto. The elastic unit generates an elastic force, thereby further buffering the pressure generated by the vibration and providing further buffer protection for the housing arranged in the base.

[0029] In a specific exemplary technical solution, the elastic unit 14 can be a spring, an elastic film, etc., and no specific description is given here.

[0030] The working principle of the technical solution of the embodiment of the present invention is as follows: When transferring, the device is moved to a specified position through the installed moving wheels 2. After moving to the specified position, the telescopic member 3 drives the positioning support plate 4 to move downward, so that the positioning support plate 4 contacts the ground to fix the device, thereby improving the stability of the device; when encountering a bumpy road surface during the movement, the device will shake. At this time, the housing 21 and the base 18 provided will move downward under the action of pressure. The base 18 moves downward to drive the slider 9 at one end of the support rod to move downward. The slider 9 moves downward to squeeze the elastic member 10 on one side. The elastic member 10 is compressed, thereby buffering the impact force of the vibration on the base 18. At the same time, when the slider 9 moves downward, it will drive the buffer rod 8 to compress the buffer block 6 at one end. The buffer blocks 6 slide toward each other and squeeze the elastic member 7 therebetween. The elastic member 7 is squeezed, thereby further buffering the impact force generated by the vibration and playing a good buffer protection role for the housing 21. The provided buffer assembly further disperses the pressure generated by the vibration. When heating the molten salt in the housing 21, the provided driving member 20 drives the driving shaft 22 to rotate. The driving shaft 22 rotates to drive the stirring rod 28 to rotate. The stirring rod 28 rotates to stir the molten salt in the housing 21 to make it mix evenly, improving the heating efficiency. At the same time, the provided scraper 29 can scrape off the molten salt adhering to the inner wall. During this process, the driving shaft 22 rotates to drive the driven shaft 24 to rotate through the connecting unit 23. The driven shaft 24 rotates to drive the half gear 25 to rotate. The half gear 25 rotates and meshes with the driven gear 26 to drive the rotating shaft 27 to rotate. The rotating shaft 27 rotates in the housing 21. The housing 21 rotates, thereby driving the molten salt in the housing 21 to rotate, making the molten salt keep turning over and further improving the heating efficiency of the molten salt.

[0031] In summary, the embodiment of the present invention discloses an electric heating molten salt heat storage device, which includes a support plate, a driving component, an elastic component, a buffer component, a stirring rod, a connecting unit and a positioning and supporting component. When encountering a bumpy road surface during movement, it will shake. At this time, the housing and the base provided will move downward under the action of pressure. The downward movement of the base drives the slider at one end of the support rod to move downward. The downward movement of the slider squeezes the elastic component on one side, and the elastic component is compressed to buffer the impact force of the vibration on the base. The downward movement of the slider drives the buffer rod to compress the buffer block. The opposite sliding of the buffer blocks will squeeze the elastic component between them, and the elastic component is squeezed, which can further buffer the impact force generated by the vibration. During heating, the driving component drives the stirring rod to rotate to stir the molten salt in the housing, the transmission component drives the rotating shaft to rotate, the rotation of the rotating shaft drives the housing, and the rotation of the housing can drive the molten salt in the housing to rotate, so that the molten salt keeps turning, further improving the heating efficiency of the molten salt.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention. In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electric heating molten salt heat storage device, characterized in that, Comprising: a support plate (1), a base (18), and a housing (21); wherein, a moving wheel (2) and a positioning support assembly are installed at the bottom of the support plate (1); support columns (11) are symmetrically arranged on the support plate (1) along a preset central plane, and sliding grooves are formed in each support column (11); a slider (9) is slidably installed in the sliding groove, a support rod is installed on one side of the slider (9), an elastic member (10) is installed on the other side of the slider (9), and one end of the elastic member (10) away from the slider (9) is connected to the bottom wall of the sliding groove; an installation groove (5) is formed in the support plate (1), buffer blocks (6) are symmetrically and slidably installed in the installation groove (5) along the central plane, an elastic member (7) is arranged between the buffer blocks (6), two ends of the elastic member (7) are respectively connected to the two buffer blocks (6), a buffer rod (8) is hingedly arranged on each buffer block (6), and one end of the buffer rod (8) away from the buffer block (6) is hinged to the slider (9); one end of the support rod away from the slider (9) is installed with the base (18), the housing (21) is rotatably installed in the base (18) through a rotating shaft (27), and a stirring rod (28) is rotatably arranged in the housing (21); a driving assembly for driving the housing (21) and the stirring rod (28) to rotate is installed on the base (18).

2. The electrothermal molten salt heat storage device according to claim 1, wherein the positioning support assembly includes a telescopic member (3) and a positioning support plate (4); wherein, one end of the telescopic member (3) is connected to the support plate (1), and the other end of the telescopic member (3) is provided with the positioning support plate (4).

3. The electrothermal molten salt heat storage device according to claim 1, wherein the driving assembly includes a driving member (20) and a transmission assembly; wherein, the driving member (20) is installed on the base (18), a driving shaft (22) is installed at the output end of the driving member (20), and one end of the driving shaft (22) away from the driving member (20) extends into the housing (21); the driving shaft (22) is rotatably connected to the housing (21), and the stirring rod (28) is installed on the driving shaft (22); the transmission assembly includes a connection unit (23), a driven shaft (24), a semi-gear (25), and a driven gear (26); wherein, the driven shaft (24) is rotatably arranged in the base (18); the semi-gear (25) is installed on the driven shaft (24), the driven gear (26) is installed on the rotating shaft (27), and the semi-gear (25) can be meshed with the driven gear (26); the connection unit (23) is installed on the driving shaft (22), and one end of the connection unit (23) away from the driving shaft (22) is connected to the driven shaft (24).

4. The electrothermal molten salt heat storage device according to claim 3, wherein One end of the stirring rod (28) far from the driving shaft (22) is also provided with a scraper (29), and the scraper (29) is attached to the inner wall of the housing (21).

5. An electrothermal molten salt heat storage device according to claim 1, characterized in that A buffer assembly is further installed at the bottom of the base (18), and one end of the buffer assembly far from the base (18) is connected to the support column (11).

6. An electrothermal molten salt heat storage device according to claim 5, characterized in that The buffer assembly includes a pressure rod (17), a pressure plate (16) and a buffer cavity (13); wherein, One end of the pressure rod (17) is connected to the base (18), and the other end of the pressure rod (17) is connected with the pressure plate (16); both ends of the pressure plate (16) are respectively hinged with the buffer cavity (13); A buffer plate (15) is slidably installed in the buffer cavity (13), a pull rod (12) is installed on the buffer plate (15), and one end of the pull rod (12) far from the buffer plate (15) is hinged with the support column (11); an elastic unit (14) is sleeved on the pull rod (12); one end of the elastic unit (14) is connected with the buffer plate (15), and the other end of the elastic unit (14) is connected with the side wall of the buffer cavity (13).

7. An electrothermal molten salt heat storage device according to claim 1, characterized in that An electric heater is further arranged in the housing (21), and the electric heater is used to heat the molten salt in the housing (21) by using the night valley electricity.

8. An electrothermal molten salt heat storage device according to claim 7, characterized in that A temperature sensor is further arranged in the housing (21), and the temperature sensor is used to monitor the temperature of the molten salt in the housing (21).

9. An electrothermal molten salt heat storage device according to claim 1, characterized in that A protective frame (19) is further installed on the base (18).

10. A working method of the electric heating molten salt heat storage device according to claim 1, characterized in that, Including: When the electrothermal molten salt heat storage device is transferred, the electrothermal molten salt heat storage device is moved to a designated position through the installed moving wheels (2); After moving to the designated position, the positioning and supporting assembly is in contact with the ground to fix and support the electrothermal molten salt heat storage device; wherein, when shaking occurs during the moving process, the housing (21) and the base (18) move downward under the action of pressure. When the base (18) moves downward, the slider (9) is driven by the support rod to move downward. The slider (9) moves downward to squeeze the elastic member (10), and the elastic member (10) is compressed to buffer the impact force of the vibration on the base (18); the downward movement of the slider (9) drives the buffer rod (8) to compress the buffer block (6), and the buffer blocks (6) slide towards each other and squeeze the elastic member (7), and the elastic member (7) is squeezed to buffer the impact force generated by the vibration; When heating the molten salt in the housing (21), the driving assembly drives the housing (21) and the stirring rod (28) to rotate; wherein, the rotation of the stirring rod (28) realizes the stirring of the molten salt in the housing (21), and the rotation of the housing (21) realizes the turning of the molten salt in the housing (21).

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