A solid heat storage device with thermal cycle function and working method thereof

Abstract

The present invention relates to the field of solid heat storage technology, and in particular to a solid heat storage device with a heat circulation function and a working method thereof, comprising a heat storage module, one end of the heat storage module is connected to a heat exchanger through a connecting pipe, the heat exchanger is connected to an air inlet of an internal circulation fan, the air outlet of the internal circulation fan is connected to the other end of the heat storage module through a first circulation pipe, and one side of the top of the heat exchanger is connected to the external circulation fan through a second circulation pipe; the rotation of the arc-shaped outer plate is realized by the rotation cooperation of a movable ring seat and a fixed ring seat, and then the arc-shaped outer plate is used in conjunction with the arc-shaped inner plate, when the arc-shaped outer plate rotates to overlap with the arc-shaped inner plate, the spiral heating wire works normally to heat the heat storage brick, and when the arc-shaped outer plate and the arc-shaped inner plate are staggered, the inner side of the heating mechanism is in a closed state, which is convenient for repairing and replacing the spiral heating wire when the device remains in a working state, and during the repair and replacement, the heat in the heat storage module will not be caused to overflow.

Description

Technical Field

[0001] The present invention relates to the technical field of solid heat storage, and in particular to a solid heat storage device with a heat cycle function and a working method thereof. Background Art

[0002] At present, the solid heat storage devices on the market are all permanent buildings. With the expansion of urban heating area, the demand for heat repair and emergency heating has also increased accordingly. In the field of mobile heating, normal pressure water heat storage and phase change heat storage are currently used more. The temperature of water heat storage generally does not exceed 100℃, and the water volume is generally 20m 3 The heat supply is limited, the thermal conversion efficiency of phase change heat storage is only 90%, and the cost is relatively high. The heat source mainly comes from specific occasions such as industrial waste heat or waste heat. The heat storage body of the solid heat storage device can reach up to 800°C, and the output temperature can be accurately controlled between 20 and 95°C. The working principle is relatively simple and the cost is low.

[0003] When the existing solid heat storage device is in use, the air after heat exchange is directly discharged, which causes heat waste. At the same time, after a long period of heating by the spiral heating wire, short circuit and oxidation are prone to occur. Therefore, the spiral heating wire needs to be repaired and replaced regularly. The spiral heating wire is installed inside the device. Repair and replacement require the entire device to be disassembled and assembled. The repair and replacement steps are cumbersome and require shutdown for operation. Summary of the invention

[0004] The problem solved by the present invention is to provide a solid heat storage device with a thermal circulation function and a working method thereof, which solves the problem that when the existing solid heat storage device is in use, the air after heat exchange is directly discharged, thereby causing heat waste. At the same time, after a long period of heating work by the spiral heating wire, short circuit and oxidation are prone to occur. Therefore, the spiral heating wire needs to be repaired and replaced regularly. The spiral heating wire is installed inside the device. Repair and replacement require the entire device to be disassembled and assembled, the repair and replacement steps are cumbersome, and the operation requires shutdown.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A solid heat storage device with a heat cycle function, comprising a heat storage module, one end of the heat storage module is connected to a heat exchanger through a connecting pipe, the heat exchanger is connected to an air inlet of an internal circulation fan, the air outlet of the internal circulation fan is connected to the other end of the heat storage module through a first circulation pipe, one side of the top end of the heat exchanger is connected to an external circulation fan through a second circulation pipe, the external circulation fan is provided with a heat supply air outlet, and the other side of the top end of the heat exchanger is provided with a heat supply return air outlet;

[0007] The heat storage module comprises a protective shell, a plurality of heat storage bricks are stacked and installed inside the protective shell, and a plurality of air ducts are arranged between the heat storage bricks, and a heating mechanism is installed in the air ducts;

[0008] The heating mechanism includes a fixed ring seat and a fixed disk, the fixed ring seat is installed at one end of the protective shell through a mounting arm, and the fixed disk is installed at the other end of the protective shell, a plurality of arc-shaped inner plates are installed at equal angles between the fixed ring seat and the fixed disk, a movable ring seat is rotatably installed on the outer side of the fixed ring seat, a plurality of arc-shaped outer plates are installed at equal angles on the movable ring seat, a translation ring seat is slidably installed inside the fixed ring seat, a mounting seat is installed in the translation ring seat, and a spiral heating wire is installed in the mounting seat.

[0009] Preferably, the inner wall of the protective shell is provided with a heat insulation layer, the outer side of the heat insulation layer is pressed by a mesh steel frame, the mesh steel frame is fixedly connected to the protective shell, the heat insulation layer located on the four sides and the top side of the heat storage brick is a folding block, and the heat insulation layer located at the bottom of the heat storage brick is a multi-layer hard pressure-bearing insulation board;

[0010] The folding block material is an aluminum silicate fiber blanket, and the thickness after compression and folding is 400 mm. The multi-layer hard pressure-bearing insulation board material is a multi-layer calcium silicate board, and the thickness is 300 mm.

[0011] Preferably, the heat storage bricks are made of alkaline refractory material, and the firing temperature of the heat storage bricks is greater than 1500°C.

[0012] Preferably, shell covers are bolted onto both ends of the protective shell, and both ends of the heating mechanism are located inside the shell covers.

[0013] Preferably, the fixed ring seat and the movable ring seat are connected via a bearing, an inner side of the movable ring seat is provided with internal teeth, a mounting frame is mounted on the fixed ring seat, a first motor is mounted on the mounting frame, a rotating tooth is mounted on the output end of the first motor, and the rotating tooth is meshed with the internal tooth.

[0014] Preferably, a transmission box is installed on the outer side of the fixed plate, and a second motor is installed on the transmission box.

[0015] Preferably, a plurality of protrusions are arranged at equal angles on the outer side of the translation ring seat, and a threaded rod is mounted on the protrusion through a nut, and a threaded barrel is threadedly sleeved on the outer side of the threaded rod.

[0016] Preferably, one end of the threaded barrel passes through the fixed disk and is located in a transmission box and is equipped with a driven tooth, and the output end of the second motor is located in the transmission box and is equipped with a driving tooth, and the driving tooth is meshed with the driven tooth.

[0017] Preferably, the width of the arc-shaped inner plate, the width of the arc-shaped outer plate, and the width of the heat exchange grooves between adjacent arc-shaped inner plates are the same.

[0018] A working method of a solid heat storage device with a thermal cycle function, the specific operating steps of the working method are as follows:

[0019] Step 1: The spiral heating wire of the heating mechanism is powered on for heating. The spiral heating wire radiates heat to the heat storage bricks in the air duct. The heat is stored in the heat storage bricks. The heat storage process ends. The internal circulation fan works to realize air circulation in the heat storage module, the heat exchanger and the first circulation pipe. The heat in the heat storage module is continuously circulated to the heat exchanger to exchange heat with the air in the heat exchange pipe. The external circulation fan works to realize air circulation in the heat exchange pipe in the heat exchanger, thereby realizing heating.

[0020] Step 2: The first motor drives the rotating gear to rotate, and the rotating gear meshes with the inner gear to drive the movable ring seat to rotate outside the fixed ring seat, and the movable ring seat drives the arc outer plate to rotate outside the arc inner plate. When the arc outer plate rotates to overlap with the arc inner plate, the spiral heating wire works normally to heat the heat storage bricks. When the arc outer plate and the arc inner plate are staggered, the inside of the heating mechanism is in a closed state, and the spiral heating wire is repaired and replaced;

[0021] Step three: remove the shell cover, and drive the active gear to rotate through the second motor, and then drive the driven gear to rotate, the driven gear drives the threaded barrel to rotate, and the threaded rod threadedly connected to the threaded barrel moves telescopically in the threaded barrel, thereby realizing the translation of the translation ring seat, the mounting seat and the spiral heating wire, and moving the spiral heating wire out of the heating mechanism. At this time, it is convenient to repair and replace the spiral heating wire, and after repair and replacement, the spiral heating wire is automatically moved into the heating mechanism.

[0022] The beneficial effects of the present invention are: the internal circulation of air in the heat storage module is realized by the internal circulation fan, and the air after heat exchange is circulated into the heat storage module again, thereby reducing heat loss and reducing the use cost;

[0023] The rotation of the curved outer plate is realized by the rotation cooperation of the movable ring seat and the fixed ring seat, and then it is used in conjunction with the curved inner plate. When the curved outer plate rotates to overlap with the curved inner plate, the spiral heating wire works normally to heat the heat storage bricks. When the curved outer plate and the curved inner plate are staggered, the inside of the heating mechanism is in a closed state, which is convenient for repairing and replacing the spiral heating wire while the device remains in working state, and during repair and replacement, the heat in the heat storage module will not be caused to overflow;

[0024] The threaded barrel is rotated by meshing transmission of active teeth and driven teeth, driving the threaded rod connected to the threaded barrel to telescope and move inside the threaded barrel. During disassembly and maintenance, the translation ring seat, mounting seat and spiral heating wire can be moved horizontally in the center, without manual handling and avoiding collision with the device during handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the first structure of the present invention as a whole;

[0026] Figure 2 It is a schematic diagram of the second structure of the present invention as a whole;

[0027] Figure 3 This is a cross-sectional view of a heat storage module of the present invention;

[0028] Figure 4 This is a schematic diagram of the installation structure of the heat storage brick and the heating mechanism of the present invention;

[0029] Figure 5 This is a first structural schematic diagram of the heating mechanism of the present invention;

[0030] Figure 6 This is a second structural schematic diagram of the heating mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the heating mechanism of the present invention;

[0032] Figure 8 It is a schematic diagram of the internal structure of the transmission box of the present invention.

[0033] Legend:

[0034] 1. Heat storage module; 2. Connecting pipe; 3. Heat exchanger; 4. Internal circulation fan; 5. First circulation pipe; 6. Second circulation pipe; 7. Heat return air outlet; 8. External circulation fan; 9. Heat outlet; 10. Protective shell; 11. Shell cover; 12. Heat storage brick; 13. Air duct; 14. Heating mechanism; 15. Fixed ring seat; 16. Fixed plate; 17. Arc inner plate; 18. Movable ring seat; 19. Arc outer plate; 20. Translational ring seat; 21. Mounting seat; 22. Spiral heating wire; 23. Mounting arm; 24. Internal gear; 25. Mounting frame; 26. First motor; 27. Rotating gear; 28. Transmission box; 29. ​​Second motor; 30. Driven gear; 31. Active gear; 32. Threaded barrel; 33. Threaded rod; 34. Bump; 35. Nut. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0036] Specific examples are given below. Embodiment 1

[0037] See also Figure 1 and Figure 2 , a solid heat storage device with heat circulation function comprises a heat storage module 1, one end of the heat storage module 1 is connected to the heat exchanger 3 through a connecting pipe 2, the heat exchanger 3 is connected to the air inlet of the internal circulation fan 4, the air outlet of the internal circulation fan 4 is connected to the other end of the heat storage module 1 through a first circulation pipe 5, one side of the top of the heat exchanger 3 is connected to the external circulation fan 8 through a second circulation pipe 6, a heat supply air outlet 9 is arranged on the external circulation fan 8, and a heat supply return air outlet 7 is arranged on the other side of the top of the heat exchanger 3. The spiral heating wire 22 of the heating mechanism 14 is energized for heating, and the spiral heating wire 22 radiates heat to the heat storage brick 12 in the air duct 13, and the heat is stored in the heat storage brick 12. When the heat storage process ends, the internal circulation fan 4 works to realize the air circulation in the heat storage module 1, the heat exchanger 3 and the first circulation pipe 5, and the heat in the heat storage module 1 is continuously circulated to the heat exchanger 3 for heat exchange with the air in the heat exchange pipe, and the external circulation fan 8 works to realize the air circulation in the heat exchange pipe in the heat exchanger 3, thereby realizing heating. Embodiment 2

[0038] See also Figure 3~Figure 8The heat storage module 1 includes a protective shell 10, the inner wall of the protective shell 10 is provided with a heat insulation layer, the outer side of the heat insulation layer is pressed by a mesh steel frame, the mesh steel frame is fixedly connected to the protective shell 10, the heat insulation layer located on the four sides and the top side of the heat storage brick 12 is a folding block, the heat insulation layer located at the bottom of the heat storage brick 12 is a multi-layer hard pressure-bearing insulation board, the folding block material is an aluminum silicate fiber blanket, and the thickness after compression and folding is 400mm, the multi-layer hard pressure-bearing insulation board material is a multi-layer calcium silicate board, the thickness is 300mm, the heat storage brick 12 is made of alkaline refractory material, and the firing temperature of the heat storage brick 12 is greater than 1500℃, the two ends of the protective shell 10 are respectively bolted with a shell cover 11, the two ends of the heating mechanism 14 are respectively located in the shell cover 11, and the protective shell 10 is stacked and installed inside A plurality of heat storage bricks 12 are provided, and a plurality of air ducts 13 are provided between the heat storage bricks 12. A heating mechanism 14 is installed in the air duct 13. The heating mechanism 14 includes a fixed ring seat 15 and a fixed disk 16. The fixed ring seat 15 is installed at one end of the protective shell 10 through a mounting arm 23, and the fixed disk 16 is installed at the other end of the protective shell 10. A plurality of arc-shaped inner plates 17 are installed at equal angles between the fixed ring seat 15 and the fixed disk 16. A movable ring seat 18 is rotatably installed on the outer side of the fixed ring seat 15. The fixed ring seat 15 and the movable ring seat 18 are connected through a bearing. An inner tooth 24 is provided on the inner side of the movable ring seat 18. A mounting frame 25 is installed on the fixed ring seat 15. A first motor 26 is installed on the mounting frame 25. A rotating tooth 27 is installed at the output end of the first motor 26, and the rotating tooth 27 is connected to the inner tooth 24. 24 meshing, a plurality of arc-shaped outer plates 19 are installed at equal angles on the movable ring seat 18, the width of the arc-shaped inner plate 17, the width of the arc-shaped outer plate 19 and the width of the heat exchange groove between adjacent arc-shaped inner plates 17 are the same, a translation ring seat 20 is slidably installed inside the fixed ring seat 15, a mounting seat 21 is installed inside the translation ring seat 20, a spiral heating wire 22 is installed inside the mounting seat 21, a transmission box 28 is installed outside the fixed disk 16, a second motor 29 is installed on the transmission box 28, a plurality of convex blocks 34 are arranged at equal angles on the outside of the translation ring seat 20, and a threaded rod 33 is installed on the convex block 34 through a nut 35, a threaded sleeve 32 is threadedly sleeved on the outer side of the threaded rod 33, one end of the threaded sleeve 32 passes through the fixed disk 16 and is located in the transmission box 28 and is installed with a driven tooth 30, the second motor 2 The output end is located in the transmission box 28 and is equipped with a driving tooth 31, and the driving tooth 31 is meshed with the driven tooth 30. The first motor 26 drives the rotating tooth 27 to rotate, and the rotating tooth 27 is meshed with the inner tooth 24 to drive the movable ring seat 18 to rotate outside the fixed ring seat 15. The movable ring seat 18 drives the arc outer plate 19 to rotate outside the arc inner plate 17. When the arc outer plate 19 rotates to overlap with the arc inner plate 17, the spiral heating wire 22 works normally to heat the heat storage brick 12. When the arc outer plate 19 and the arc inner plate 17 are staggered, the inner side of the heating mechanism 14 is in a closed state. The spiral heating wire 22 is repaired and replaced, and the shell cover 11 is removed. The second motor 29 drives the driving tooth 31 to rotate, and then drives the driven tooth 30 to rotate.The driven gear 30 drives the threaded barrel 32 to rotate, and the threaded rod 33 threadably connected to the threaded barrel 32 telescopically moves in the threaded barrel 32, so as to realize the translation of the translation ring seat 20, the mounting seat 21 and the spiral heating wire 22, and move the spiral heating wire 22 out of the heating mechanism 14, so that it is convenient to repair and replace the spiral heating wire 22, and after the repair and replacement, the spiral heating wire 22 is automatically moved into the heating mechanism 14.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solid heat storage device with thermal cycle function, characterized in that: The heat storage module (1) comprises a heat storage module (1), one end of the heat storage module (1) is connected to a heat exchanger (3) via a connecting pipe (2), the heat exchanger (3) is connected to an air inlet of an internal circulation fan (4), the air outlet of the internal circulation fan (4) is connected to the other end of the heat storage module (1) via a first circulation pipe (5), one side of the top end of the heat exchanger (3) is connected to an external circulation fan (8) via a second circulation pipe (6), a heat supply air outlet (9) is provided on the external circulation fan (8), and a heat supply air return outlet (7) is provided on the other side of the top end of the heat exchanger (3); The heat storage module (1) comprises a protective shell (10), a plurality of heat storage bricks (12) are stacked and installed inside the protective shell (10), a plurality of air ducts (13) are arranged between the heat storage bricks (12), and a heating mechanism (14) is installed in the air duct (13); The heating mechanism (14) comprises a fixed ring seat (15) and a fixed disk (16), wherein the fixed ring seat (15) is mounted on one end of the protective shell (10) via a mounting arm (23), and the fixed disk (16) is mounted on the other end of the protective shell (10), a plurality of arc-shaped inner plates (17) are mounted at equal angles between the fixed ring seat (15) and the fixed disk (16), a movable ring seat (18) is rotatably mounted on the outer side of the fixed ring seat (15), and a plurality of arc-shaped outer plates (19) are mounted on the movable ring seat (18) at equal angles, a translation ring seat (20) is slidably mounted inside the fixed ring seat (15), a mounting seat (21) is mounted inside the translation ring seat (20), and a spiral heating wire (22) is mounted inside the mounting seat (21); The protective housing (10) is bolted with a housing cover (11) at both ends, and the heating mechanism (14) is located in the housing cover (11) at both ends; the fixed ring seat (15) and the movable ring seat (18) are connected via a bearing, and the inner side of the movable ring seat (18) is provided with an inner tooth (24); a mounting frame (25) is mounted on the fixed ring seat (15), and a first motor (26) is mounted on the mounting frame (25); a rotating tooth (27) is mounted on the output end of the first motor (26), and the rotating tooth (27) is meshed with the inner tooth (24); a transmission box (28) is mounted on the outer side of the fixed plate (16), and a second motor (26) is mounted on the transmission box (28). 9); a plurality of protrusions (34) are arranged at equal angles on the outer side of the translation ring seat (20), and a threaded rod (33) is mounted on the protrusion (34) through a nut (35), and a threaded barrel (32) is threadedly sleeved on the outer side of the threaded rod (33); one end of the threaded barrel (32) passes through the fixed plate (16) and is located in the transmission box (28) and is mounted with a driven tooth (30); the output end of the second motor (29) is located in the transmission box (28) and is mounted with a driving tooth (31), and the driving tooth (31) is meshed with the driven tooth (30); the width of the arc-shaped inner plate (17), the width of the arc-shaped outer plate (19) and the width of the heat exchange groove between adjacent arc-shaped inner plates (17) are the same.

2. A solid heat storage device with thermal cycle function according to claim 1, characterized in that: The inner wall of the protective shell (10) is provided with a heat insulation layer, the outer side of the heat insulation layer is pressed by a mesh steel frame, the mesh steel frame is fixedly connected to the protective shell (10), the heat insulation layer located on the four side surfaces and the top side of the heat storage brick (12) is a folding block, and the heat insulation layer located at the bottom of the heat storage brick (12) is a multi-layer hard pressure-bearing insulation board; The folding block material is an aluminum silicate fiber blanket, and the thickness after compression and folding is 400 mm. The multi-layer hard pressure-bearing insulation board material is a multi-layer calcium silicate board, and the thickness is 300 mm.

3. A solid heat storage device with thermal cycle function according to claim 2, characterized in that: The material of the heat storage brick (12) is alkaline refractory material, and the firing temperature of the heat storage brick (12) is greater than 1500°C.

4. The working method of a solid heat storage device with thermal cycle function according to claim 3, characterized in that: The specific steps of this working method are as follows: Step 1: The spiral heating wire (22) of the heating mechanism (14) is powered on for heating. The spiral heating wire (22) radiates heat to the heat storage brick (12) in the air duct (13). The heat is stored in the heat storage brick (12). The heat storage process ends. The internal circulation fan (4) operates to realize air circulation in the heat storage module (1), the heat exchanger (3) and the first circulation pipe (5). The heat in the heat storage module (1) is continuously circulated to the heat exchanger (3) to exchange heat with the air in the heat exchange pipe. The external circulation fan (8) operates to realize air circulation in the heat exchange pipe in the heat exchanger (3), thereby realizing heating. Step 2: The first motor (26) is driven to rotate the rotating gear (27), and the rotating gear (27) is meshed with the inner gear (24), driving the movable ring seat (18) to rotate outside the fixed ring seat (15), and the movable ring seat (18) drives the arc-shaped outer plate (19) to rotate outside the arc-shaped inner plate (17). When the arc-shaped outer plate (19) rotates to overlap with the arc-shaped inner plate (17), the spiral heating wire (22) works normally to heat the heat storage brick (12). When the arc-shaped outer plate (19) and the arc-shaped inner plate (17) are staggered, the inner side of the heating mechanism (14) is in a closed state, and the spiral heating wire (22) is repaired and replaced. Step 3: Remove the shell cover (11), and drive the driving gear (31) to rotate by the second motor (29), thereby driving the driven gear (30) to rotate. The driven gear (30) drives the threaded tube (32) to rotate, and the threaded rod (33) threadedly connected to the threaded tube (32) moves telescopically in the threaded tube (32), thereby achieving translation of the translation ring seat (20), the mounting seat (21) and the spiral heating wire (22), and moving the spiral heating wire (22) out of the heating mechanism (14). At this time, it is convenient to repair and replace the spiral heating wire (22), and after the repair and replacement, the spiral heating wire (22) is automatically moved into the heating mechanism (14).

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