A fast molten salt device

Abstract

The present invention relates to the technical field of high-temperature molten salt, and specifically to a fast molten salt device including a molten salt tank, the molten salt tank is provided with a tank cover, and also includes a stirring assembly located in the molten salt tank for stirring, the stirring assembly includes a rotating drum rotatably arranged on the tank cover, the outer peripheral surface of the rotating drum is provided with a scraper 1 and a scraper 2 attached to the inner wall of the molten salt tank, the inner wall of the rotating drum is provided with a guide groove 1 and a guide groove 2 that are connected to each other; a driving assembly for moving up and down to stir the circulation of salts in the molten salt tank, the driving assembly includes a driving rod slidably arranged on the tank cover and a movable platform arranged at the bottom end of the driving rod, the movable platform is provided with a guide column that cooperates with the guide groove 1 and the guide groove 2, and a one-way flow cover is provided on the movable platform, the one-way flow cover is used to close when the movable platform rises to move the material at the center of the molten salt tank upward, and when the movable platform descends, the one-way flow cover is pressed to open and introduce the material outside the molten salt tank into the center. The present invention realizes fast molten salt operation and improves work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature molten salt, and in particular to a fast molten salt device. Background Art

[0002] Molten salt is a molten body formed by melting salts. As a high-efficiency heat storage material, it is widely used as a heat transfer and storage medium. Molten salt device is a broad term, usually referring to various equipment and systems involving molten salt as a working medium or energy storage medium. Molten salt has the advantages of a wide operating temperature range, low vapor pressure, large heat capacity, low high temperature viscosity, high thermal stability, and low price and easy availability. Therefore, it is widely used in energy, chemical industry, metallurgy and other fields.

[0003] In molten salt devices, molten salt is mainly used as a medium for heat transfer and energy storage. The high thermal capacity and stability of molten salt are used to store thermal energy, and the thermal energy is released when needed to generate electricity or provide heating. In the field of renewable energy, such as solar thermal power generation, the molten salt energy storage system can significantly improve the reliability and economy of the power generation system.

[0004] In the existing molten salt heat exchange device, heat needs to be gradually transferred to the inside of the molten salt in the heating tank. The molten salt heat exchanger melts and reaches a high temperature state simply by absorbing external heat. The melting speed of the molten salt is slow, which reduces the overall working efficiency of the equipment. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a fast molten salt device, which can effectively solve the problem of slow melting speed of molten salt and reduced work efficiency in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a rapid molten salt device, comprising a molten salt tank, the molten salt tank being provided with a tank cover, and further comprising:

[0008] A stirring assembly for stirring in the molten salt tank, the stirring assembly comprising a rotating drum rotatably arranged on the tank cover, and a scraper 1 and a scraper 2 are arranged on the outer circumference of the rotating drum and are attached to the inner wall of the molten salt tank, and a guide groove 1 and a guide groove 2 are arranged on the inner wall of the rotating drum and are connected to each other;

[0009] A driving assembly for moving up and down to stir the circulation of salt in a molten salt tank, the driving assembly comprising a driving rod slidably arranged on a tank cover and a movable platform arranged at the bottom end of the driving rod, the movable platform is provided with a guide column cooperating with guide groove one and guide groove two, and a one-way flow cover is provided on the movable platform, the one-way flow cover is used to close when the movable platform rises to stir the material at the center of the molten salt tank upward, and when the movable platform descends, the one-way flow cover is pressed open to guide the material outside the molten salt tank into the center.

[0010] Furthermore, an annular groove is provided on the inner side of the tank cover, and a sliding block extending into the annular groove is provided on the top of the rotating drum.

[0011] Furthermore, the scraper one and the scraper two are both provided with multiple groups of annular arrays distributed on the rotating drum, and the scraper one and the scraper two are staggeredly distributed, the top end of the scraper one is higher than the top end of the rotating drum and is in contact with the tank cover, and the bottom end of the scraper one is flush with the bottom end of the rotating drum and higher than the bottom end of the molten salt tank, the top end of the scraper two is flush with the top end of the rotating drum, and the bottom end of the scraper two is lower than the bottom end of the rotating drum and is in contact with the bottom end of the molten salt tank.

[0012] Furthermore, guide groove one is an arc groove, guide groove two is a vertical groove, and both ends of guide groove one are connected to the top and bottom ends of the adjacent guide groove two. The angle of guide groove one is 90°, that is, when the guide column slides in guide groove one, it guides the rotating drum to rotate 90°.

[0013] Furthermore, a plurality of groups of limiting members are provided at the bottom of the one-way flow cover, and the gaps between the limiting members are greater than the widths of the limiting members.

[0014] Furthermore, the movable table is in the shape of a cone, and the diameter of one end of the movable table close to the driving rod is smaller than the diameter of one end of the movable table close to the bottom of the molten salt tank, and the diameter of the end of the movable table with a larger diameter is smaller than the inner wall diameter of the rotating drum, that is, when the movable table moves upward, part of the material flows down through the gap between the movable table and the rotating drum, and the movable table and the inner wall of the rotating drum cooperate to grind the granular material.

[0015] Furthermore, the scraper blade 1 and the scraper blade 2 are both obliquely distributed on the drum, and the inclined scraper blade 1 and the scraper blade 2 are used to guide the drum as a whole to rotate clockwise when the material flows out from the top of the drum.

[0016] Furthermore, a blind hole and a material hole are provided on the driving rod, and the material hole is connected with the blind hole, and a through hole connected with the blind hole is correspondingly provided on the movable platform.

[0017] Beneficial Effects

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. The movable table is pushed down by the driving rod, and the one-way flow cover is opened under pressure to introduce part of the material onto the movable table. As the movable table rises, the guide column guides the rotating drum to rotate, and the material on the inner wall of the molten salt tank is scraped off. At the same time, the one-way flow cover is closed and the movable table drives the material to the top of the rotating drum and flows into the space between the rotating drum and the molten salt tank to complete the material transfer. At the same time, the material inside the molten salt tank is scraped off to bring the new material into contact with the inner wall of the molten salt tank, so that the material can be fully mixed and the material at different positions can be heated to achieve rapid molten salt operation.

[0020] Second, by setting a frustum-shaped movable table, when the movable table moves upward, part of the material flows down through the gap between the movable table and the drum, and the movable table and the inner wall of the drum cooperate to grind part of the granular material, thereby accelerating the melting of the internal salts again. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the stirring assembly of the present invention;

[0025] Figure 4 It is a front view of the stirring assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the local structure of the driving assembly of the present invention;

[0027] Figure 6 It is a schematic diagram of the connection between the movable table and the rotating drum of the present invention;

[0028] Figure 7 Schematic diagram of the connection between scraper 1 and scraper 2 of the present invention and the drum

[0029] Figure 8 For the present invention Figure 7 Top view of the .

[0030] Figure numerals: 1, molten salt tank; 11, tank cover; 2, stirring assembly; 21, rotating drum; 211, guide groove 1; 212, guide groove 2; 213, slider; 22, scraper 1; 23, scraper 2; 3, driving assembly; 31, driving rod; 311, material hole; 32, movable platform; 33, one-way flow cover; 331, limit piece; 34, guide column. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] A fast molten salt device, see attached Figure 1-8 , including a molten salt tank 1 for absorbing heat energy, heating the material inside by the heat of the periphery of the molten salt tank 1, the molten salt tank 1 is provided with a tank cover 11, and also including:

[0033] A stirring assembly 2 for stirring materials is located in the molten salt tank 1. The stirring assembly 2 stirs the materials in the molten salt tank 1 to make them flow, and at the same time scrapes off the molten materials on the inner wall of the molten salt tank 1, so that the materials that are not completely melted can fully contact with the inner wall of the molten salt tank 1. The stirring assembly 2 includes a rotating drum 21 rotatably arranged on the tank cover 11, and an annular groove is arranged on the inner side of the tank cover 11. A slider 213 extending into the annular groove is arranged on the top of the rotating drum 21, and a scraper 1 22 and a scraper 23 are arranged on the outer peripheral surface of the rotating drum 21. The molten material on the inner wall of the molten salt tank 1 is scraped off by the scraper 1 22 and the scraper 2 23 during rotation. The scraper 1 22 and the scraper 2 23 are both provided with a plurality of annular arrays distributed on the drum 21, and the scraper 1 22 and the scraper 2 23 are staggered. The top of the scraper 1 22 is higher than the top of the drum 21 and is in contact with the tank cover 11, and the bottom of the scraper 1 22 is flush with the bottom of the drum 21 and higher than the bottom of the molten salt tank 1, and the top of the scraper 2 23 is flush with the top of the drum 21, and the bottom of the scraper 2 23 is lower than the drum 21. The bottom end is attached to the bottom end of the molten salt tank 1. Through the special arrangement of the scraper 1 22, the scraper 23 and the drum 21, the material in the molten salt tank 1 is divided into two parts, one part is located in the drum 21, and the other part is located between the drum 21 and the molten salt tank 1. The material falls to the bottom of the molten salt tank 1 after being scraped by the scraper 1 22 and the scraper 23, and can enter the drum 21 through the gap between the bottom of the drum 21 and the bottom of the molten salt tank 1. Similarly, the material in the middle of the drum 21 can also flow into the drum 21 and the drum 21 again from the gap at the top of the drum 21. The molten salt tanks 1 are provided with a guide groove 1 211 and a guide groove 212 which are connected to each other on the inner wall of the rotating drum 21. The guide groove 1 211 is an arcuate groove, and the guide groove 212 is a vertical groove. The two ends of the guide groove 1 211 are connected to the top and bottom of the adjacent guide groove 212. The angle of the guide groove 1 211 is 90°. When the guide groove 1 211 is viewed from above, the angle between the two ends of the guide groove 1 211 is 90°, that is, when the guide column 34 slides in the guide groove 1 211, it guides the rotating drum 21 to rotate 90°.

[0034] Furthermore, the scraper 1 22 and the scraper 2 23 are both obliquely distributed on the drum 21. The inclined scraper 1 22 and the scraper 2 23 are used to guide the drum 21 to rotate clockwise as a whole when the material flows out from the top of the drum 21, or to cause the drum 21 to move in the clockwise direction as a whole.

[0035] The driving assembly 3 is used to move up and down to stir the circulation of salt in the molten salt tank 1. When the driving assembly 3 moves up and down in a cycle, it drives the stirring assembly 2 to rotate continuously, and circulates the material in the rotating drum 21 and the material between the rotating drum 21 and the molten salt tank 1, so that the materials in different places can fully contact the inside of the molten salt tank 1. The driving assembly 3 includes a driving rod 31 slidably arranged on the tank cover 11 and a movable platform 32 arranged at the bottom end of the driving rod 31. The driving rod 31 is provided with a blind hole and a material hole 311, and the material The hole 311 is connected to the blind hole, and a through hole connected to the blind hole is correspondingly provided on the movable platform 32. The material hole 311 can be used for feeding or extracting molten material. Preferably, two groups of blind holes can be provided on the driving rod 31 (not shown in the figure), and the material hole 311 can be provided in two groups and respectively connected to the two groups of blind holes, one group for feeding and the other for extracting. The movable platform 32 is provided with a guide column 34 that cooperates with the guide groove 1 211 and the guide groove 212, and the guide column 34 cooperates with the guide groove 1 211 to drive the rotating drum 21 to rotate, and the guide groove 212 is used to The guide pillar 34 enters the adjacent guide groove 211, and a one-way flow cover 33 is provided on the movable platform 32. The one-way flow cover 33 is used to close when the movable platform 32 rises to push the material at the center of the molten salt tank 1 upward. When the movable platform 32 descends, the one-way flow cover 33 is pressed to open and guide the material outside the molten salt tank 1 to the center. A plurality of groups of limiting members 331 are provided at the bottom of the one-way flow cover 33, and the gap between the limiting members 331 is greater than the width of the limiting members 331. When the movable platform 32 descends, the one-way flow cover 33 is pushed open. The molten material flows from the gap between the material holes 311 to the top of the movable table 32. When the movable table 32 rises, the one-way flow cover 33 is closed due to gravity. At this time, the movable table 32 drives the material in the drum 21 to move upward, and finally flows from the top of the drum 21 to between the drum 21 and the molten salt tank 1. When the material flows out from the top of the drum 21, due to the inclined arrangement of the scraper 1 22 and the scraper 2 23, the material will give the drum 21 a rotational force when it descends, which is used to guide the guide column 34 to complete the transfer between the guide groove 1 211 and the guide groove 2 212.

[0036] In the above technical solution, the movable platform 32 is pushed down by the driving rod 31. At this time, the movable platform 32 squeezes the material inside the rotating drum 21, and the one-way flow cover 33 is opened under pressure to introduce part of the material onto the movable platform 32. Then the driving rod 31 drives the movable platform 32 to rise, and the guide column 34 on the movable platform 32 guides the rotating drum 21 to rotate, and the material on the inner wall of the molten salt tank 1 is scraped off and falls. At the same time, the one-way flow cover 33 is closed, and the movable platform 32 drives the material to the top of the rotating drum 21 and flows into between the rotating drum 21 and the molten salt tank 1 to complete the transfer of the material. At the same time, the material inside the molten salt tank 1 is scraped off to bring the new material into contact with the inner wall of the molten salt tank 1, so that the material can be fully mixed while heating the material at different positions to achieve rapid molten salt operation.

[0037] In addition, the movable platform 32 is in the shape of a cone, and the diameter of one end of the movable platform 32 close to the driving rod 31 is smaller than the diameter of the end of the movable platform 32 close to the bottom of the molten salt tank 1, and the diameter of the end of the movable platform 32 with a larger diameter is smaller than the inner wall diameter of the drum 21, that is, when the movable platform 32 moves upward, part of the material flows down through the gap between the movable platform 32 and the drum 21, and the movable platform 32 cooperates with the inner wall of the drum 21 to grind part of the granular material, thereby accelerating the melting of the internal salt.

[0038] In the above technical solution, when the movable table 32 rises, part of the molten material will flow down from the gap between the movable table 32 and the drum 21, and part of the particles in the material will be crushed again to accelerate the melting of the material by heat.

[0039] Working principle: Add the material into the molten salt tank 1. At this time, the material near the inner wall of the molten salt tank 1 is heated and melted first. Then, the movable platform 32 is pushed down by the driving rod 31. The movable platform 32 descends with the cooperation of the guide column 34 and the guide groove 212. At this time, the rotating drum 21 does not rotate, and the movable platform 32 squeezes the material inside the rotating drum 21. At the same time, the one-way flow cover 33 is pressed and opened, and part of the material is introduced above the movable platform 32. Then, the driving rod 31 drives the movable platform 32 to rise, and the guide column 34 and the guide groove 211 on the movable platform 32 cooperate to guide the rotating drum 21 to rotate, and the material on the inner wall of the molten salt tank 1 is scraped off and falls. At the same time, the one-way flow cover 33 is closed, and the movable platform 32 drives the material to the top of the rotating drum 21 and flows into the rotating drum 21 and the molten salt tank 1. During the transfer, the scraper 1 22 and the scraper 2 23 scrape the material on the inner wall of the molten salt tank 1 and bring the new material into contact with the inner wall of the molten salt tank 1, so that the material can be fully mixed and evenly heated. Since the movable platform 32 is in the shape of a cone, the diameter of the end of the movable platform 32 close to the driving rod 31 is smaller than the diameter of the end of the movable platform 32 close to the bottom of the molten salt tank 1, and the diameter of the end of the movable platform 32 with a larger diameter is smaller than the inner wall diameter of the rotating drum 21. When the movable platform 32 moves upward, part of the material flows down through the gap between the movable platform 32 and the rotating drum 21, and the movable platform 32 cooperates with the inner wall of the rotating drum 21 to grind part of the granular material again to accelerate the melting of the internal salt.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid molten salt device, comprising a molten salt tank (1), wherein the molten salt tank (1) is provided with a tank cover (11), characterized in that: Also includes: A stirring assembly (2) for stirring located in a molten salt tank (1), the stirring assembly (2) comprising a rotating drum (21) rotatably arranged on a tank cover (11), and a first scraper (22) and a second scraper (23) abutting against an inner wall of the molten salt tank (1) are provided on the outer circumferential surface of the rotating drum (21), an annular groove is provided on the inner side of the tank cover (11), a sliding block (213) extending into the annular groove is provided on the top of the rotating drum (21), and a first guide groove (211) and a second guide groove (212) communicating with each other are provided on the inner wall of the rotating drum (21); A driving assembly (3) for moving up and down to stir the circulation of salt in a molten salt tank (1), the driving assembly (3) comprising a driving rod (31) slidably arranged on a tank cover (11) and a movable platform (32) arranged at the bottom end of the driving rod (31), the movable platform (32) being in the shape of a cone, the diameter of an end of the movable platform (32) close to the driving rod (31) being smaller than the diameter of an end of the movable platform (32) close to the bottom of the molten salt tank (1), and the diameter of an end of the movable platform (32) with a larger diameter being smaller than the inner wall diameter of a rotating drum (21), that is, when the movable platform (32) moves upward, part of the material The material flows down through the gap between the movable table (32) and the rotating drum (21), and the movable table (32) cooperates with the inner wall of the rotating drum (21) to grind the granular material. The movable table (32) is provided with a guide column (34) that cooperates with the guide groove 1 (211) and the guide groove 2 (212), and the movable table (32) is provided with a one-way flow cover (33). The one-way flow cover (33) is used to close when the movable table (32) rises to push the material at the center of the molten salt tank (1) upward, and when the movable table (32) descends, the one-way flow cover (33) is pressed to open and guide the material outside the molten salt tank (1) into the center.

2. A fast molten salt device according to claim 1, characterized in that: The scraper blade 1 (22) and the scraper blade 2 (23) are both provided with a plurality of groups of annular arrays distributed on the rotating drum (21), and the scraper blade 1 (22) and the scraper blade 2 (23) are staggeredly distributed, the top end of the scraper blade 1 (22) is higher than the top end of the rotating drum (21) and is in contact with the tank cover (11), and the bottom end of the scraper blade 1 (22) is flush with the bottom end of the rotating drum (21) and is higher than the bottom end of the molten salt tank (1), the top end of the scraper blade 2 (23) is flush with the top end of the rotating drum (21), and the bottom end of the scraper blade 2 (23) is lower than the bottom end of the rotating drum (21) and is in contact with the bottom end of the molten salt tank (1).

3. A fast molten salt device according to claim 1, characterized in that: The guide groove one (211) is an arc-shaped groove, the guide groove two (212) is a vertical groove, and the two ends of the guide groove one (211) are connected to the top and bottom ends of the adjacent guide groove two (212). The angle of the guide groove one (211) is 90°, that is, when the guide column (34) slides in the guide groove one (211), it guides the rotating drum (21) to rotate 90°.

4. A fast molten salt device according to claim 1, characterized in that: A plurality of groups of limiting members (331) are provided at the bottom of the one-way flow cover (33), and the gaps between the limiting members (331) are greater than the widths of the limiting members (331).

5. A fast molten salt device according to claim 1, characterized in that: The scraper blade 1 (22) and the scraper blade 2 (23) are both obliquely distributed on the drum (21); the inclined scraper blade 1 (22) and the scraper blade 2 (23) are used to guide the drum (21) to rotate clockwise as a whole when the material flows out from the top of the drum (21).

6. A fast molten salt device according to claim 1, characterized in that: The driving rod (31) is provided with a blind hole and a material hole (311), and the material hole (311) is connected to the blind hole, and the movable platform (32) is correspondingly provided with a through hole connected to the blind hole.

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