Wind power heat energy storage device

Abstract

The utility model discloses a wind power heat energy storage device, which relates to the technical field of wind power heat energy storage devices and comprises a bearing frame. U-shaped plates are fixedly connected to the middles of the front end and the rear end of the bearing frame, and first electric cylinders are fixedly connected to the inner walls of grooves of the U-shaped plates. According to the device, the two third heat preservation blocks approach the heat storage bin to achieve heat insulation and heat preservation of the outer wall of the heat storage bin, the two heat preservation bodies can also be close to each other, so that the two heat preservation bodies and the two second heat preservation blocks jointly form a closed structure, and heat preservation of the periphery of the heat storage bin is achieved; a second electric cylinder only needs to be started to enable a lifting plate to move upwards, a U-shaped block is driven to move upwards, the U-shaped block is moved out of two positioning grooves, a first heat preservation block can be conveniently and rapidly replaced, and therefore the problems that in the prior art, a wind power heat energy storage device is generally insufficient in heat preservation effect, the heat loss speed after heat energy storage is difficult to slow down, and heat energy is wasted are solved. And the thermal insulation material is inconvenient to quickly replace and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power thermal energy storage devices, in particular to a wind power thermal energy storage device. Background Art

[0002] In modern energy systems, the use of renewable energy has received increasing attention, among which wind energy has been widely used as an important clean energy. Thermal energy storage technology, as an important energy storage method, has the advantages of high energy density and mature technology, and has received widespread attention. It converts electrical energy into thermal energy and stores it in a heat storage medium, and then converts thermal energy into electrical energy or other forms of energy when needed to achieve energy storage and release. However, the wind power thermal energy storage device in the prior art usually has insufficient insulation effect when in use, making it difficult to slow down the heat loss rate after thermal energy storage, and it is not convenient to quickly replace and maintain the insulation material.

[0003] At present, the utility model with patent number CN201920825841.4 discloses a wind power thermal energy storage device, including an energy storage tank body, a partition, a heating bin, an electric heater, a heat storage bin, a steam outlet pipe, an end cover and an outer insulation cylinder; the energy storage tank body is divided into a heating bin, a heat storage bin and a steam generating bin by two sets of partitions, and an electric heater is fixedly installed in the heating bin. When the device converts electrical energy into thermal energy through the electric heater and stores it in the heat storage bin through the heat storage material, the probability of heat exchange between the energy storage tank body and the external heat can be effectively reduced. When necessary, medium water can be sent to the steam generating bin to generate steam and sent to the power generation device on the rear side for power generation, and the amount of steam generated can be controlled by controlling the amount of water flowing into the steam generating bin from the medium water inlet pipe. However, when the wind power thermal energy storage device in the prior art is used, the insulation effect is usually insufficient, it is difficult to slow down the heat loss rate after thermal energy storage, and it is not convenient to quickly replace and maintain the insulation material, which needs further improvement. Summary of the invention

[0004] The purpose of the utility model is to provide a wind power thermal energy storage device, which solves the technical problems that the wind power thermal energy storage device in the prior art mentioned above usually has insufficient thermal insulation effect when in use, is difficult to slow down the heat loss rate after thermal energy storage, and is inconvenient to quickly replace and maintain the thermal insulation material.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind power thermal energy storage device, comprising a bearing frame; a U-shaped plate is fixedly connected to the middle of the front and rear ends of the bearing frame, a first electric cylinder is fixedly connected to the inner wall of the groove of the U-shaped plate, the output shafts of the two first electric cylinders are arranged facing each other, a push block is fixedly connected to the output shaft of the first electric cylinder, a heat preservation body is fixedly connected to the upper end of the push block, a first groove body is provided at the left and right ends of the heat preservation body, a first heat preservation block is movably provided on the inner wall of the first groove body, evenly distributed first screw holes are penetrated at the left and right ends of the first heat preservation block, a first threaded column is threadedly installed on the inner wall of the first screw hole, a bearing tank is fixedly connected to the center of the upper end of the bearing frame, an electric heater is fixedly connected to the lower end surface of the inner wall of the bearing tank, and the upper ends of the bearing tank and the electric heater are fixed A first partition is connected, a heat storage bin is fixedly connected to the upper end of the first partition, a second partition is fixedly connected to the upper end of the heat storage bin, a steam generating bin is fixedly connected to the upper end of the steam generating bin, a water supply pipe and a steam exhaust pipe are fixedly connected to the upper end of the steam generating bin, a second electric cylinder is fixedly connected to the end of the insulation body away from the steam generating bin, a lifting plate is fixedly connected to the upper end of the second electric cylinder, a U-shaped block is fixedly connected to the end of the lifting plate close to the steam generating bin, a positioning groove is provided at the upper end of the first insulation block, the inner walls of the two positioning grooves are fitted with the outer wall of the lower end of the U-shaped block, two second insulation blocks facing each other are movably provided at the upper end of the bearing frame, the end of the second insulation block close to the heat storage bin is fixedly connected to evenly distributed second connecting blocks, and the end of the second connecting block close to the heat storage bin is fixedly connected to a third insulation block.

[0006] Preferably, when in use, wind power is used to heat the electric heater, and the heat storage material is placed in the heat storage bin, and the heat storage material will convert electrical energy into thermal energy. When heat output is required, external water is connected to the water supply pipe, and the heat storage material will heat the steam generating bin, and the water will become water vapor and be discharged through the steam exhaust pipe, thereby realizing the conversion and utilization of energy. Two third insulation blocks are used to be close to the heat storage bin to insulate the outer wall of the heat storage bin. The two insulation bodies can also be close to each other so that the two insulation bodies and the two second insulation blocks form a closed structure together to achieve insulation around the heat storage bin. When the first insulation block needs to be replaced, it is only necessary to open the second electric cylinder to move the lifting plate upward, drive the U-shaped block to move upward, and move the U-shaped block out of the two positioning grooves, so that the first insulation block can be quickly replaced, thereby solving the problem that the wind power thermal energy storage device in the prior art is usually insufficient in insulation effect when in use, it is difficult to slow down the heat loss rate after thermal energy storage, and it is inconvenient to quickly replace and maintain the insulation material.

[0007] Preferably, a motor is fixedly connected to the center of the right end of the supporting frame, the left end of the output shaft of the motor passes through the right end of the supporting frame and is fixedly connected to a double-thread screw, and threads with opposite thread directions are arranged on both sides of the outer wall of the double-thread screw, and two threaded sleeves matching the two threaded threads are movably mounted on the outer walls of the double-thread screw, and a bearing is fixedly connected to the left end face of the inner wall of the supporting frame, and the outer wall of the left end of the double-thread screw fits with the inner wall of the bearing. When the motor is turned on to rotate the double-thread screw, the two threaded sleeves will approach or move away from each other.

[0008] Preferably, evenly distributed second screw holes are provided through the left and right ends of the insulation body, the second screw holes correspond to the first screw holes one by one, a second threaded column is threadedly installed on the inner wall of the second screw hole, and a spring is fixedly connected to the left and right ends of the second threaded column, the second threaded column is threadedly installed on the inner wall of any second screw hole, and then the first threaded column is threadedly installed on the inner wall of the first screw hole, so that the first threaded column corresponds to the spring, so that when the U-shaped block is moved out of the positioning groove, the compressed spring will generate elastic force on the first threaded column, thereby facilitating the first insulation block to be moved out of the first groove body.

[0009] Preferably, a fixing block is fixedly connected to the upper end of the threaded sleeve, the top surface of the fixing block is "U"-shaped and the opening of the U-shape faces the heat storage bin, a limiting groove is provided at the upper end of the fixing block, the fixing block is "U"-shaped, and the setting of the limiting groove can facilitate the installation of the second insulation block.

[0010] Preferably, the second insulation block is fixedly connected to the first connecting block at one end away from the heat storage bin, and the first connecting block is fixedly connected to the mounting block at one end away from the heat storage bin. The lower end of the mounting block is fixedly connected to a limiting column, the limiting column and the limiting groove are matched, the lower end of the mounting block is fixedly connected to the limiting block, the limiting block and the inner wall of the groove of the fixed block are matched, the ends of the two fixed blocks close to each other are fitted with the ends of the two first connecting blocks away from each other, the limiting column is inserted into the limiting groove, and the inner wall of the groove of the limiting block and the fixed block are matched, so that the stable installation and placement of the mounting block can be achieved.

[0011] Preferably, the second insulation block and the third insulation block are both arc-shaped, the two second insulation blocks are fitted together to form a cylindrical shape, and the two third insulation blocks are fitted together to form a cylindrical shape. When the second insulation block and the third insulation block are used alone to insulate the heat storage bin, the ends of the two third insulation blocks that are close to each other are fitted against the outer wall of the heat storage bin, thereby improving the insulation effect of the heat storage bin.

[0012] Compared with the related art, the wind power thermal energy storage device provided by the utility model has the following beneficial effects:

[0013] 1. The utility model provides a wind power thermal energy storage device, which uses wind power to heat an electric heater, places a heat storage material in a heat storage bin, and the heat storage material converts electrical energy into thermal energy. When heat output is required, external water is connected to a water supply pipe, and the heat storage material heats the steam generating bin, and the water becomes water vapor and is discharged through a steam exhaust pipe, thereby realizing energy conversion and utilization. Two third insulation blocks are used to be close to the heat storage bin to insulate the outer wall of the heat storage bin. The two insulation bodies can also be close to each other so that the two insulation bodies and the two second insulation blocks form a closed structure together to achieve insulation around the heat storage bin. When the first insulation block needs to be replaced, it is only necessary to open the second electric cylinder to move the lifting plate upward, drive the U-shaped block to move upward, and move the U-shaped block out of the two positioning grooves, so that the first insulation block can be quickly replaced, thereby solving the problem that the wind power thermal energy storage device in the prior art is usually insufficient in insulation effect when in use, and it is difficult to slow down the heat loss rate after heat energy storage, and it is inconvenient to quickly replace and maintain the insulation material.

[0014] 2. Install the second threaded column on the inner wall of any second screw hole, and then install the first threaded column on the inner wall of the first screw hole, so that the first threaded column corresponds to the spring. In this way, when the U-shaped block is removed from the positioning groove, the compressed spring will generate elastic force on the first threaded column, thereby facilitating the first insulation block to be quickly removed from the first groove body;

[0015] 3. By inserting the limit column into the limit groove and making the inner wall of the groove of the limit block and the fixed block fit together, the stable installation and placement of the mounting block can be achieved. When the second insulation block and the third insulation block are used alone to insulate the heat storage bin, the ends of the two third insulation blocks that are close to each other are made to fit the outer wall of the heat storage bin, thereby improving the insulation effect of the heat storage bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a bottom view of the three-dimensional structure of the load-bearing frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional split structure of the first heat-insulating block and the heat-insulating body of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the mounting block of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the carrier tank of the utility model.

[0021] In the figure: 1. bearing frame; 2. U-shaped plate; 3. first electric cylinder; 4. push block; 5. insulation body; 6. first trough body; 7. first insulation block; 8. first screw hole; 9. first threaded column; 10. second electric cylinder; 11. lifting plate; 12. U-shaped block; 13. motor; 14. double-thread screw; 15. threaded sleeve; 16. bearing; 17. second screw hole; 18. second threaded column; 19. spring; 20. positioning groove; 21. fixing block; 22. limiting groove; 23. limiting column; 24. mounting block; 25. first connecting block; 26. second insulation block; 27. second connecting block; 28. third insulation block; 29. ​​limiting block; 30. bearing tank; 31. electric heater; 32. first partition; 33. heat storage bin; 34. second partition; 35. steam generating bin; 36. water supply pipe; 37. steam exhaust pipe. DETAILED DESCRIPTION

[0022] Example 1: Please refer to Figure 1 , 2 , 4 and 5, the utility model provides a technical solution, including a carrying frame 1; a U-shaped plate 2 is fixedly connected to the middle of the front and rear ends of the carrying frame 1, the inner wall of the groove of the U-shaped plate 2 is fixedly connected to the first electric cylinder 3, the output shafts of the two first electric cylinders 3 are arranged facing each other, and a push block 4 is fixedly connected to the output shaft of the first electric cylinder 3, and the upper end of the push block 4 is fixedly connected to a heat preservation body 5, and the left and right ends of the heat preservation body 5 are provided with a first groove body 6, and the inner wall of the first groove body 6 is movably provided with a first heat preservation block 7, and the left and right ends of the first heat preservation block 7 are penetrated with uniformly distributed first screw holes 8, and the inner wall of the first screw hole 8 is threadedly installed with a first threaded column 9, a carrying tank 30 is fixedly connected to the center of the upper end of the carrying frame 1, and an electric heater 31 is fixedly connected to the lower end surface of the inner wall of the carrying tank 30, and the upper ends of the carrying tank 30 and the electric heater 31 are fixedly connected to a first partition plate 32, and the upper end of the first partition plate 32 is fixedly connected to There is a heat storage bin 33, the upper end of the heat storage bin 33 is fixedly connected with a second partition 34, the upper end of the second partition 34 is fixedly connected with a steam generating bin 35, the upper end of the steam generating bin 35 is fixedly connected with a water supply pipe 36 and a steam exhaust pipe 37, the end of the insulation body 5 away from the steam generating bin 35 is fixedly connected with a second electric cylinder 10, the upper end of the second electric cylinder 10 is fixedly connected with a lifting plate 11, the end of the lifting plate 11 close to the steam generating bin 35 is fixedly connected with a U-shaped block 12, a positioning groove 20 is provided at the upper end of the first insulation block 7, the inner walls of the two positioning grooves 20 are fitted with the outer wall of the lower end of the U-shaped block 12, and two second insulation blocks 26 arranged opposite to each other are movably provided at the upper end of the supporting frame 1, the end of the second insulation block 26 close to the heat storage bin 33 is fixedly connected with evenly distributed second connecting blocks 27, and the end of the second connecting block 27 close to the heat storage bin 33 is fixedly connected with a third insulation block 28.

[0023] See also Figure 2In this embodiment, a motor 13 is fixedly connected to the center of the right end of the supporting frame 1, and the left end of the output shaft of the motor 13 passes through the right end of the supporting frame 1 and is fixedly connected to a double-thread screw 14. The outer wall of the double-thread screw 14 is provided with threads with opposite thread directions on both sides, and the outer wall of the double-thread screw 14 is movably mounted with two threaded sleeves 15 compatible with the two thread threads. The left end face of the inner wall of the supporting frame 1 is fixedly connected to a bearing 16, and the left end outer wall of the double-thread screw 14 is in contact with the inner wall of the bearing 16.

[0024] See also Figure 4 In this embodiment, a fixing block 21 is fixedly connected to the upper end of the threaded sleeve 15. The top surface of the fixing block 21 is "U"-shaped and the opening of the U-shape faces the heat storage bin 33. A limiting groove 22 is provided at the upper end of the fixing block 21. The end of the second insulation block 26 away from the heat storage bin 33 is fixedly connected to the first connecting block 25. The end of the first connecting block 25 away from the heat storage bin 33 is fixedly connected to the mounting block 24. The lower end of the mounting block 24 is fixedly connected to the limiting column 23. The limiting column 23 and the limiting groove 22 are adapted. The lower end of the mounting block 24 is fixedly connected to the limiting block 29. The limiting block 29 and the inner wall of the groove of the fixing block 21 are adapted. The ends of the two fixing blocks 21 close to each other are fitted with the ends of the two first connecting blocks 25 away from each other.

[0025] See also Figure 1 In this embodiment, the second insulation block 26 and the third insulation block 28 are both arc-shaped, the two second insulation blocks 26 are fitted together to form a cylindrical shape, and the two third insulation blocks 28 are fitted together to form a cylindrical shape.

[0026] In this embodiment: when in use, wind power is used to heat the electric heater 31, and the heat storage material is placed in the heat storage bin 33. The heat storage material will convert electrical energy into thermal energy. When heat output is required, external water is connected to the water supply pipe 36, and the heat storage material will heat the steam generating bin 35. The water will become water vapor and be discharged through the steam exhaust pipe 37, thereby realizing the conversion and utilization of energy. The limiting column 23 is inserted into the limiting groove 22, and the limiting block 29 and the inner wall of the groove of the fixing block 21 are adapted to realize the stable installation and placement of the mounting block 24. The motor 13 is turned on to rotate the double-thread screw 14, and the two threaded sleeves 15 will move closer to or farther away from each other, so that the two first The ends of the three insulation blocks 28 that are close to each other are attached to the outer wall of the heat storage bin 33, which can improve the insulation effect of the heat storage bin 33. The two third insulation blocks 28 are used to be close to the heat storage bin 33 to insulate the outer wall of the heat storage bin 33. The two insulation bodies 5 can also be close to each other so that the two insulation bodies 5 and the two second insulation blocks 26 form a closed structure together to achieve insulation around the heat storage bin 33. When the first insulation block 7 needs to be replaced, it is only necessary to open the second electric cylinder 10 to move the lifting plate 11 upward, drive the U-shaped block 12 to move upward, and move the U-shaped block 12 out of the two positioning grooves 20, so that the first insulation block 7 can be quickly replaced.

[0027] Example 2: Please refer to Figure 1 and 3 On the basis of the first embodiment, the utility model provides a technical solution: the left and right ends of the heat preservation body 5 are penetrated with evenly distributed second screw holes 17, the second screw holes 17 correspond to the first screw holes 8 one by one, the inner wall of the second screw hole 17 is threadedly installed with a second threaded column 18, and the left and right ends of the second threaded column 18 are fixedly connected with springs 19.

[0028] In this embodiment: when in use, the second threaded column 18 is threadedly installed on the inner wall of any second screw hole 17, and then the first threaded column 9 is threadedly installed on the inner wall of the first screw hole 8, so that the first threaded column 9 corresponds to the spring 19. In this way, when the U-shaped block 12 is moved out of the positioning groove 20, the compressed spring 19 will generate elastic force on the first threaded column 9, thereby facilitating the first insulation block 7 to be moved out of the first groove body 6.

[0029] Working principle: When in use, wind power is used to heat the electric heater 31, and the heat storage material is placed in the heat storage bin 33. The heat storage material will convert electrical energy into thermal energy. When heat output is required, external water is connected to the water supply pipe 36, and the heat storage material will heat the steam generating bin 35. The water will turn into water vapor and be discharged through the steam exhaust pipe 37, thus realizing the conversion and utilization of energy.

[0030] When the heat storage bin 33 needs to be insulated, the limiting column 23 is inserted into the limiting groove 22, and the limiting block 29 and the inner wall of the groove of the fixing block 21 are adapted to achieve stable installation and placement of the mounting block 24. Then, the motor 13 is turned on to rotate the double-thread screw 14, and the two threaded sleeves 15 will move closer to or farther away from each other, so that the ends of the two third insulation blocks 28 that are close to each other are attached to the outer wall of the heat storage bin 33, thereby improving the insulation effect of the heat storage bin 33. The outer wall of the heat storage bin 33 is insulated by using the two third insulation blocks 28 close to the heat storage bin 33.

[0031] In addition, the two heat-insulating bodies 5 can also be brought close to each other, so that the two heat-insulating bodies 5 and the two second heat-insulating blocks 26 together form a closed structure, so as to achieve heat insulation around the heat storage bin 33. When the first heat-insulating block 7 needs to be replaced, it is only necessary to open the second electric cylinder 10 to move the lifting plate 11 upward, drive the U-shaped block 12 to move upward, so that the U-shaped block 12 is moved out of the two positioning grooves 20, so as to facilitate the rapid replacement of the first heat-insulating block 7.

[0032] When the first insulation block 7 needs to be quickly replaced, after the first insulation block 7 is placed in the first slot body 6, the second threaded column 18 is threadedly installed on the inner wall of any second screw hole 17, and then the first threaded column 9 is threadedly installed on the inner wall of the first screw hole 8, so that the first threaded column 9 corresponds to the spring 19. In this way, when the U-shaped block 12 is moved out of the positioning groove 20, the compressed spring 19 will generate elastic force on the first threaded column 9, thereby facilitating the rapid removal of the first insulation block 7 from the first slot body 6.

Claims

1. A wind power thermal energy storage device, comprising a bearing frame (1); characterized in that: A U-shaped plate (2) is fixedly connected to the middle of the front and rear ends of the carrying frame (1); a first electric cylinder (3) is fixedly connected to the inner wall of the groove of the U-shaped plate (2); the output shafts of the two first electric cylinders (3) are arranged facing each other; a push block (4) is fixedly connected to the output shaft of the first electric cylinder (3); a heat preservation body (5) is fixedly connected to the upper end of the push block (4); a first groove body (6) is opened at the left and right ends of the heat preservation body (5); a first heat preservation block (7) is movably arranged on the inner wall of the first groove body (6); and the first heat preservation block ( The left and right ends of the support frame (7) are penetrated with evenly distributed first screw holes (8), the inner wall of the first screw hole (8) is threadedly mounted with a first threaded column (9), the center of the upper end of the support frame (1) is fixedly connected to a support tank (30), the lower end surface of the inner wall of the support tank (30) is fixedly connected to an electric heater (31), the upper ends of the support tank (30) and the electric heater (31) are fixedly connected to a first partition (32), the upper end of the first partition (32) is fixedly connected to a heat storage bin (33), and the heat storage bin (33) is fixedly connected to the heat storage bin (33). The upper end is fixedly connected to a second partition plate (34), the upper end of the second partition plate (34) is fixedly connected to a steam generating chamber (35), the upper end of the steam generating chamber (35) is fixedly connected to a water supply pipe (36) and a steam exhaust pipe (37), the end of the heat preservation body (5) away from the steam generating chamber (35) is fixedly connected to a second electric cylinder (10), the upper end of the second electric cylinder (10) is fixedly connected to a lifting plate (11), and the end of the lifting plate (11) close to the steam generating chamber (35) is fixedly connected to a U-shaped block (11). 2), a positioning groove (20) is provided at the upper end of the first thermal insulation block (7), the inner walls of the two positioning grooves (20) are in contact with the outer wall of the lower end of the U-shaped block (12), and the upper end of the supporting frame (1) is also movably provided with two second thermal insulation blocks (26) arranged opposite to each other, one end of the second thermal insulation block (26) close to the heat storage bin (33) is fixedly connected to uniformly distributed second connecting blocks (27), and one end of the second connecting block (27) close to the heat storage bin (33) is fixedly connected to a third thermal insulation block (28).

2. A wind power thermal energy storage device according to claim 1, characterized in that: A motor (13) is fixedly connected to the center of the right end of the bearing frame (1), the left end of the output shaft of the motor (13) passes through the right end of the bearing frame (1) and is fixedly connected to a double-thread screw (14), the outer wall of the double-thread screw (14) is provided with threads with opposite thread directions on both sides, the outer wall of the double-thread screw (14) is movably mounted with two threaded sleeves (15) adapted to the two threaded threads, the left end face of the inner wall of the bearing frame (1) is fixedly connected to a bearing (16), and the left end outer wall of the double-thread screw (14) is in contact with the inner wall of the bearing (16).

3. A wind power thermal energy storage device according to claim 1, characterized in that: The left and right ends of the heat-insulating body (5) are penetrated by evenly distributed second screw holes (17), the second screw holes (17) correspond to the first screw holes (8) one by one, the inner walls of the second screw holes (17) are threadedly mounted with second threaded columns (18), and the left and right ends of the second threaded columns (18) are fixedly connected to springs (19).

4. A wind power thermal energy storage device according to claim 2, characterized in that: A fixing block (21) is fixedly connected to the upper end of the threaded sleeve (15); the top surface of the fixing block (21) is U-shaped and the opening of the U-shape faces the heat storage bin (33); and a limiting groove (22) is provided at the upper end of the fixing block (21).

5. A wind power thermal energy storage device according to claim 4, characterized in that: One end of the second heat-insulating block (26) away from the heat storage bin (33) is fixedly connected to the first connecting block (25), one end of the first connecting block (25) away from the heat storage bin (33) is fixedly connected to the mounting block (24), the lower end of the mounting block (24) is fixedly connected to the limiting column (23), the limiting column (23) and the limiting groove (22) are matched, the lower end of the mounting block (24) is fixedly connected to the limiting block (29), the limiting block (29) and the inner wall of the groove of the fixing block (21) are matched, and the ends of the two fixing blocks (21) close to each other are in contact with the ends of the two first connecting blocks (25) away from each other.

6. A wind power thermal energy storage device according to claim 1, characterized in that: The second heat-insulating block (26) and the third heat-insulating block (28) are both arc-shaped; the two second heat-insulating blocks (26) are fitted together to form a cylindrical shape; and the two third heat-insulating blocks (28) are fitted together to form a cylindrical shape.

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