Double-heat-preservation and heat-insulation high-temperature instrument heat preservation box

Abstract

A double-heat-preservation and heat-insulation high-temperature instrument heat preservation box comprises an outer box body, an inner box body, a box cover, a first heat preservation structure and a second heat preservation structure, the inner box body is installed in the outer box body, a cavity is formed between the outer box body and the inner box body, the box cover is connected to the top of the outer box body, and the box cover can control the inner cavity of the inner box body to be opened and closed; the first heat preservation structure is arranged in the cavity and forms heat preservation on the peripheral side and the bottom side of the inner box body, the second heat preservation structure is arranged on the box cover and forms heat preservation on the top side of the inner box body, and each of the first heat preservation structure and the second heat preservation structure comprises an outer heat preservation layer and an inner heat preservation layer. The heat-preservation protective cover is reasonable in structure and has the advantages of being good in protective effect and heat-preservation effect.

Description

Technical Field

[0001] This utility model relates to the field of insulation box technology, and in particular to a double-insulated high-temperature instrument insulation box. Background Technology

[0002] In industrial applications such as power, chemical, metallurgy, and petroleum, a large number of instruments are required to monitor industrial processes. However, these applications often involve harsh environmental factors such as high temperatures, low temperatures, dust, and corrosive gases, which can damage the instruments and affect their normal operation. Among these factors, temperature is more difficult to control than others because many instruments are installed outdoors and are severely affected by the natural environment. They are exposed to high temperatures in summer and severe cold and snow in winter. Some instruments are installed close to production equipment that emits high heat or low temperatures, making them susceptible to damage from these devices. To ensure the normal operation of the instruments, they are usually placed in an instrument insulation box to keep them in a suitable temperature environment. However, most existing instrument insulation boxes have problems with poor protection and insulation performance. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a double-insulated high-temperature instrument insulation box with reasonable structure and good protection and heat preservation effects.

[0004] The technical solution adopted by this utility model to solve its technical problem is a double-insulated high-temperature instrument insulation box, including an outer box, an inner box, a box cover, and a first insulation structure and a second insulation structure. The inner box is installed inside the outer box, and a cavity is formed between the outer box and the inner box. The box cover is connected to the top of the outer box and can control the opening and closing of the inner cavity of the inner box. The first insulation structure is disposed in the cavity and provides insulation for the periphery and bottom of the inner box. The second insulation structure is disposed on the box cover and provides insulation for the top of the inner box. Both the first insulation structure and the second insulation structure include an outer insulation layer and an inner insulation layer.

[0005] The advantages of the above technical solution are as follows: The insulation box adopts an outer box, an inner box, and a lid structure. The instruments are placed in the inner cavity of the inner box. Therefore, the outer box and the lid effectively protect the inner box, making it less susceptible to impact and providing excellent protection for the instruments, thus making the instruments safer to use. By setting a first insulation structure in the cavity and a second insulation structure on the lid, the first and second insulation structures achieve all-round insulation of the inner box, providing excellent insulation for the instruments inside the inner box. Furthermore, both the first and second insulation structures adopt a double-layer structure of an outer insulation layer and an inner insulation layer. Therefore, different materials can be used to make the outer and inner insulation layers, making the insulation effect of the first and second insulation structures on the instruments inside the inner box even better, and the insulation structure design is also more reasonable.

[0006] Furthermore, the outer casing includes a first bottom plate and a first side plate. The first bottom plate forms the bottom wall of the outer casing and a set of opposing side walls. The first side plate has two parts to form another set of opposing side walls of the outer casing. The upper sides of the first bottom plate and the first side plate also form an inwardly oriented first bottom plate portion and a first side plate portion, respectively. The first side plate portion and the first bottom plate portion are mated together.

[0007] The advantages of adopting the above technical solution are: the outer casing adopts a modular combination structure of a first bottom plate and two first side plates, which reduces the difficulty of the process, can effectively improve production efficiency, and the cooperation between the first bottom plate with the first bottom plate part and the first side plate with the first side plate part is more reliable, and the overall structure of the outer casing is more stable.

[0008] Furthermore, the inner box includes a second bottom plate and a second side plate. The second bottom plate forms the bottom wall of the inner box, and the inner side of the first bottom plate is provided with a plurality of first studs. The first studs pass through the outer insulation layer and the inner insulation layer in the first insulation structure and provide support and fixation for the second bottom plate. The second side plate is provided with four studs to form the peripheral side wall of the inner box, and the peripheral sides of the second bottom plate and the second side plate are respectively provided with outward second bottom plate portion and second side plate portion.

[0009] The advantages of the above technical solution are as follows: The inner casing adopts a modular combination structure of a second bottom plate and four second side plates, which reduces the difficulty of the process and can effectively improve production efficiency. The setting of the first stud achieves effective support and fixation of the second bottom plate, so that the second bottom plate after the instrument is installed will not act on the inner insulation layer in the first insulation structure on the bottom side, making the installation more reasonable. In addition, the formation of the second bottom plate part ensures that the second bottom plate will not scratch the second side plate during installation. The formation of the second side plate part ensures that the inner insulation layer in the first insulation structure on the periphery is integrated with the second side plate during installation.

[0010] Furthermore, the inner side of the box cover is also provided with a third bottom plate, a third side plate, and a plurality of second studs. The third bottom plate is set on the bottom side of the second insulation structure, and the periphery of the third bottom plate also forms an outward third bottom plate portion. The third side plate is provided with four pieces and is set on the periphery of the outer insulation layer in the second insulation structure. The upper and lower sides of the third side plate both form inward third side plate portions, and the third side plate portions on the same side are mated together. The second studs pass through the outer insulation layer and the inner insulation layer in the second insulation structure and provide support and fixation for the third bottom plate.

[0011] The advantages of adopting the above technical solution are as follows: The modular combination structure of the box cover, the third bottom plate, and the third side plate reduces the difficulty of the process and can effectively improve production efficiency. At the same time, the third bottom plate with the third bottom plate part realizes the integrated structure with the inner insulation layer in the second insulation structure, and the third side plate with the third side plate part realizes the integrated structure with the outer insulation layer in the second insulation structure, which also has a certain protective effect, making the second insulation structure safer to use. Furthermore, by setting the second stud, the third bottom plate is effectively fixed, thereby realizing the effective fixation of the second insulation structure. The structural design is reasonable.

[0012] Furthermore, a first felt layer is provided between the outer insulation layer and the inner wall of the cavity in the first insulation structure, and a second felt layer is provided between the outer insulation layer and the inner insulation layer in the second insulation structure.

[0013] The advantages of adopting the above technical solution are: the first and second felt layers have a certain heat insulation effect, and their positions are also reasonable, which makes the heat insulation effect of the first and second insulation structures better. At the same time, it also enhances the strength of the outer box and the box cover, and the structural design is reasonable.

[0014] Furthermore, the insulated box also includes a lid sealing strip and an inner sealing strip. The lid sealing strip is arranged around the inside of the lid and forms a sealing fit with the upper side of the outer box. The inner sealing strip is arranged around the upper side of the inner box and forms a sealing fit with the inner side of the lid.

[0015] The advantages of adopting the above technical solution are: by setting the sealing strip on the lid and the inner sealing strip, the sealing stability between the lid and the outer and inner boxes is ensured, resulting in better heat preservation effect and reasonable structural design.

[0016] Furthermore, the inner circumferential edge of the box cover is set as an L-shaped outer waterproof baffle, the horizontal end of the outer waterproof baffle is set inward, and a drain hole is provided on the vertical end of the outer waterproof baffle. The upper circumferential side of the outer box body forms an inverted L-shaped inner waterproof baffle, the vertical end of the inner waterproof baffle is higher than the height of the drain hole, and the horizontal end of the inner waterproof baffle abuts against the sealing strip of the box cover.

[0017] The advantages of adopting the above technical solution are as follows: the outer waterproof baffle can block most of the rainwater from entering; the drainage hole and the inner waterproof baffle can prevent rainwater from entering through the gap between the outer waterproof baffle and the outer box, and then the rainwater will flow out from the drainage hole; the horizontal ends of the inner and outer waterproof baffles will abut against the sealing strip of the box lid after the box lid is closed, thereby forming a seal on the box lid. The waterproof sealing structure is reasonably designed.

[0018] Furthermore, the insulation box also includes an axial thermometer and an internally fixed sleeve. The axial thermometer is inserted through the box cover into the inner cavity of the inner box. A connecting sleeve is also fixedly provided on the temperature measuring rod of the axial thermometer. The outside of the connecting sleeve is fixedly connected to the fixed sleeve. A sealing sleeve is also provided inside the connecting sleeve. Sealing rings are also provided on both the inner and outer sides of the axial thermometer.

[0019] The advantages of adopting the above technical solution are as follows: the axial thermometer enables the insulation box to display the temperature in real time; the fixed sleeve and connecting sleeve effectively fix the axial thermometer; and with the cooperation of the sealing ring and sealing sleeve, heat leakage from the connection of the axial thermometer is effectively prevented. The structure is reasonably designed, safer to use, and has better performance. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a cross-sectional view of the structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the outer casing structure of this utility model;

[0023] Figure 4 for Figure 3 A schematic diagram of the first base plate and the first side plate in the middle;

[0024] Figure 5 This is a schematic diagram of the inner box structure of this utility model;

[0025] Figure 6 for Figure 5Schematic diagram of the second base plate and the second side plate structure;

[0026] Figure 7 This is a schematic diagram of the assembly structure of the box cover, the third bottom plate, and the third side plate of this utility model;

[0027] Figure 8 for Figure 7 Structural sectional view;

[0028] Figure 9 for Figure 1 Enlarged view of the structure at point A in the middle.

[0029] In the diagram: 1-Outer casing, 2-Inner casing, 3-Casing cover, 4-First insulation structure, 5-Second insulation structure, 6-First bottom plate, 7-First side plate, 8-First bottom plate section, 9-First side plate section, 10-Second bottom plate, 11-Second side plate, 12-First stud, 13-Second bottom plate section, 14-Second side plate section, 15-Third bottom plate, 16-Third side plate, 17-Second stud, 18-Third bottom plate section, 19-Third side plate section, 20-First felt layer, 21-Second felt layer, 22-Casing cover sealing strip, 23-Casing inner sealing strip, 24-Outer waterproof baffle, 25-Drain hole, 26-Inner waterproof baffle, 27-Axial thermometer, 28-Fixing sleeve, 29-Connecting sleeve, 30-Sealing sleeve, 31-Sealing ring, 32-Pin hinge structure, 33-Lock-locking structure, 34-Cable entry device. Detailed Implementation

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0031] Please see Figures 1 to 9As shown, a double-insulated high-temperature instrument insulation box includes an outer box 1, an inner box 2, a box cover 3, a first insulation structure 4, and a second insulation structure 5. The inner box 2 is installed inside the outer box 1, and a cavity is formed between the outer box 1 and the inner box 2. The box cover 3 is connected to the top of the outer box 1 and can control the opening and closing of the inner cavity of the inner box 2. The first insulation structure 4 is located in the cavity and provides insulation to the periphery and bottom of the inner box 2. That is, the first insulation structure 4 is located in the cavity at the left, right, front, rear, and bottom of the inner box 2. The second insulation structure 5 is located on the box cover 3 and provides insulation to the top of the inner box 2. Both the first insulation structure 4 and the second insulation structure 5 include an outer insulation layer and an inner insulation layer. In the above structure, the insulation box uses an outer box 1, an inner box 2, and a second insulation structure 5. The structure of the cover 3 and the instrument are placed inside the inner cavity of the inner box 2. Therefore, the outer box 1 and the cover 3 effectively protect the inner box 2, making the inner box 2 less susceptible to impact and providing excellent protection for the instrument, making the instrument safer to use. By setting the first insulation structure 4 in the cavity and the second insulation structure 5 on the cover 3, the first insulation structure 4 and the second insulation structure 5 achieve all-round insulation of the inner box 2, providing excellent insulation for the instrument inside the inner box 2. Moreover, both the first insulation structure 4 and the second insulation structure 5 adopt a double-layer structure of outer insulation layer and inner insulation layer. Therefore, different materials can be used to make the outer insulation layer and the inner insulation layer, making the insulation effect of the first insulation structure 4 and the second insulation structure 5 on the instrument inside the inner box 2 even better, and the insulation structure design is also more reasonable.

[0032] In this embodiment, the outer casing 1 includes a first bottom plate 6 and first side plates 7. The first bottom plate 6 forms the bottom wall and a set of opposing side walls of the outer casing 1. That is, the first bottom plate 6 is an integral structure of the bottom plate and two side plates. The first side plates 7 are provided with two to form another set of opposing side walls of the outer casing 1. The two first side plates are installed on the other two sides of the first bottom plate 6. The upper sides of the first bottom plate 6 and the first side plates 7 are respectively formed with inward first bottom plate portions 8 and first side plate portions 9. The first side plate portions 9 and the first bottom plate portions 8 are mated together. In the above structure, the outer casing 1 adopts a modular combination structure of the first bottom plate 6 and the two first side plates 7, which reduces the process difficulty and can effectively improve production efficiency. More specifically, the first Both the base plate 6 and the first side plate 7 are made of stainless steel. Therefore, the first base plate 8 and the first side plate 9 are formed by bending. The first base plate 6 and the first side plate 7, as well as the first side plate 9 and the first base plate 8, are connected by welding. Therefore, both sides of the first base plate 8 and the first side plate 9 are set as beveled structures. The reliability of the fit between the first base plate 6 with the first base plate 8 and the first side plate 7 with the first side plate 9 is improved, and the overall structure of the outer casing 1 is more stable. More specifically, the first base plate 8 and the first side plate 9 can also restrict the upper side of the outer insulation layer in the first insulation structure 4. Furthermore, by designing the length of the first base plate 8 and the first side plate 9, the outer insulation layer in the first insulation structure 4 can be covered.

[0033] In this example, the inner casing 2 includes a second bottom plate 10 and a second side plate 11. The second bottom plate 10 forms the bottom wall of the inner casing 2 and is used to place instruments. Multiple first studs 12 are provided on the inner side of the first bottom plate 6. The first studs 12 pass through the outer and inner insulation layers of the first insulation structure 4 and provide support and fixation for the second bottom plate 10. The second side plate 11 has four studs to form the peripheral side walls of the inner casing 2. An outward-facing second bottom plate portion 13 is also formed on the periphery of the second bottom plate 10. The second bottom plate 10 with the second bottom plate portion 13 will not scratch the surface coating of the second side plate 11. An outward-facing second side plate portion 14 is also formed on the periphery of the second side plate 11. The second side plate portion 14 surrounds the outer side of the second side plate 11 to form a mounting cavity for placing the inner insulation layer of the first insulation structure 4. In this way, the inner insulation layer of the first insulation structure 4 can be integrally installed on the second side plate 11. In the above structure, The inner casing 2 adopts a modular combination structure of a second base plate 10 and four second side plates 11, which reduces the difficulty of the process. More specifically, the second base plate 10 and the second side plates 11 are also made of stainless steel. The second base plate part 13 and the second side plate part 14 are formed by bending. During installation, the four second side plates 11 are first welded together and then installed into the inner casing 2. Then the second base plate 10 is installed. After the second base plate 10 is installed in place, it will be supported on the first stud 12. Then, screws are screwed in to form a fixation. The first stud 12 is set inside by welding, which can effectively improve production efficiency. The setting of the first stud 12 achieves effective support and fixation for the second base plate 10, so that the second base plate 10 after the instrument is installed will not act on the inner insulation layer of the first insulation structure 4 on the bottom side, making the installation more reasonable. It should be noted that the outer insulation layer and the inner insulation layer in the first insulation structure 4 are closely fitted together.

[0034] In this embodiment, the inner side of the box cover 3 is also provided with a third bottom plate 15, a third side plate 16, and a plurality of second studs 17. The third bottom plate 15 is set on the bottom side of the second insulation structure 5, and the periphery of the third bottom plate 15 also forms an outward third bottom plate portion 18. The third side plate 16 has four portions and is set on the periphery of the outer insulation layer in the second insulation structure 5. The upper and lower sides of the third side plate 16 both form inward third side plate portions 19, and the third side plate portions 19 on the same side are mated together. The second studs 17 pass through the outer insulation layer and the inner insulation layer in the second insulation structure 5 and provide support and fixation for the third bottom plate 15. In the above structure, the modular combination structure of the box cover 3, the third bottom plate 15, and the third side plate 16 reduces the process difficulty and can effectively improve production efficiency. More specifically, the box cover 3, the third bottom plate 15, and the third side plate 16 are also made of stainless steel. The third bottom plate portion 18 will surround the periphery of the third bottom plate 15 to form an installation cavity. The inner insulation layer of the second insulation structure 5... The insulation layer is placed in the mounting cavity, thus achieving an integrated structure with the third base plate 15. The third base plate 18 and the third side plate 19 are also formed by bending. The third side plates 16 and the third side plates 19 on the same side of the third side plate 16 are connected by welding. Therefore, the two sides of the third side plate 19 are also designed as beveled structures, which makes the third side plate 16 highly reliable and achieves an integrated structure with the outer insulation layer in the second insulation structure 5. The second stud 17 is also set inside by welding. By screwing in the screw, the third base plate 15 can be effectively supported and fixed, thereby achieving effective fixation of the second insulation structure 5. At the same time, the setting of the third base plate 15 with the third base plate 18 and the third side plate 16 with the third side plate 19 also ensures that the second stud 16 will not deform the second insulation structure 5, which has a certain protective effect, making the second insulation structure safer to use and with a reasonable structural design.

[0035] In this embodiment, a first felt layer 20 is provided between the outer insulation layer and the inner wall of the cavity in the first insulation structure 4. More specifically, a first felt layer 20 is provided on the inner side of the left, right, front, back and bottom sides of the cavity. A second felt layer 21 is provided between the outer insulation layer and the inner insulation layer in the second insulation structure 5. The first felt layer 20 and the second felt layer 21 have a certain heat insulation effect and are reasonably positioned, which makes the insulation effect of the first insulation structure 4 and the second insulation structure 5 better. At the same time, it also enhances the strength of the outer box 1 and the box cover 3. The structural design is reasonable.

[0036] In this embodiment, the insulated box also includes a lid sealing strip 22 and an inner sealing strip 23. The lid sealing strip 22 is arranged around the inside of the lid 3 and forms a sealing fit with the upper side of the outer box 1. The inner sealing strip 22 is arranged around the upper side of the inner box 2 and forms a sealing fit with the inner side of the lid 3. Through the arrangement of the lid sealing strip 22 and the inner sealing strip 23, the sealing stability between the lid 3 and the outer box 1 and the inner box 2 is ensured, resulting in better insulation effect and reasonable structural design.

[0037] In this embodiment, the lower third side plate portion 19 on the third side plate 16 abuts against the inner sealing strip 23. At the same time, a frame is provided at the end of the third bottom plate portion 18 of the third bottom plate 15, and the frame also abuts against the inner sealing strip 23.

[0038] In this embodiment, the inner circumferential edge of the lid 3 is provided as an L-shaped outer waterproof baffle 24. Since the lid 3 is made of stainless steel, the outer waterproof baffle 24 can be formed by continuous bending, and the lateral end of the outer waterproof baffle 24 is set inward. The setting of the outer waterproof baffle 24 can block most of the rainwater from entering. A drainage hole 25 is provided on the vertical end of the outer waterproof baffle 24. An inverted L-shaped inner waterproof baffle 26 is formed on the upper circumference of the outer box 1. The height of the vertical end of the inner waterproof baffle 26 is higher than the height of the drainage hole 25. The setting of the drainage hole 25 and the inner waterproof baffle 26 prevents rainwater from entering even if it passes through the outer... Water entering through the gap between the waterproof baffle 24 and the outer casing 1 will be blocked by the inner waterproof baffle 26 and then flow out through the drain hole 25. The lateral end of the inner waterproof baffle 26 abuts against the sealing strip 22 of the lid. After the lid 3 is closed, the lateral end of the inner waterproof baffle 26 will abut against the sealing strip 22 of the lid, thereby forming a seal on the lid 3. The waterproof sealing structure is reasonably designed. In the above structure, since the outer casing 1 is also made of stainless steel, the inner waterproof baffle 26 is also formed by bending. The inner waterproof baffle 26 is integrally bent with the first bottom plate 8 and the first side plate 9.

[0039] In this embodiment, the insulation box also includes an axial thermometer 27 and an internally fixed sleeve 28. The axial thermometer 27 is inserted through the box cover 3 into the inner cavity of the inner box 2. A connecting sleeve 29 is also fixedly provided on the temperature measuring rod of the axial thermometer 27. The outside of the connecting sleeve 29 is fixedly connected to the fixed sleeve 28. A sealing sleeve 30 is also provided inside the connecting sleeve 29. Sealing rings 31 are provided on both the inner and outer sides of the axial thermometer 27. The setting of the axial thermometer 27 enables the insulation box to display the temperature in real time. The setting of the fixed sleeve 28 and the connecting sleeve 29 realizes the effective fixation of the axial thermometer 27. With the joint cooperation of the sealing ring 31 and the sealing sleeve 30, the leakage of heat source from the connection of the axial thermometer 27 is effectively avoided. The structural design is reasonable, safer to use, and has better performance.

[0040] In this embodiment, the fixing sleeve 28 is a probe bakelite sleeve, the connecting sleeve 29 and the sealing sleeve 30 are combined to form a warm neck PTFE sleeve, and the sealing ring 31 is a PTFE ring.

[0041] In this example, a pin hinge structure 32 is provided on one side of the outer casing 1 and the lid 3, and a latching structure 33 is provided on the other side of the outer casing 1 and the lid 3.

[0042] In this example, the outer casing 1 and the inner casing 2 are also sealed with cable entry devices 34, and cables are threaded through the cable entry devices 34, which are used in conjunction with instruments.

[0043] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A double-insulated high-temperature instrument insulation box, characterized in that: The device includes an outer casing (1), an inner casing (2), a lid (3), a first insulation structure (4), and a second insulation structure (5). The inner casing (2) is installed inside the outer casing (1), and a cavity is formed between the outer casing (1) and the inner casing (2). The lid (3) is connected to the top of the outer casing (1) and can control the opening and closing of the inner cavity of the inner casing (2). The first insulation structure (4) is located in the cavity and provides insulation to the periphery and bottom of the inner casing (2). The second insulation structure (5) is located on the lid (3) and provides insulation to the top of the inner casing (2). Both the first insulation structure (4) and the second insulation structure (5) include an outer insulation layer and an inner insulation layer.

2. The high-temperature instrument insulation box with double thermal insulation as described in claim 1, characterized in that: The outer casing (1) includes a first bottom plate (6) and a first side plate (7). The first bottom plate (6) forms the bottom wall and a set of opposing side walls of the outer casing (1). The first side plate (7) has two parts to form another set of opposing side walls of the outer casing (1). The upper sides of the first bottom plate (6) and the first side plate (7) are respectively formed with an inward first bottom plate part (8) and a first side plate part (9). The first side plate part (9) and the first bottom plate part (8) are mated together.

3. The high-temperature instrument insulation box with double thermal insulation according to claim 2, characterized in that: The inner box (2) includes a second bottom plate (10) and a second side plate (11). The second bottom plate (10) forms the bottom wall of the inner box (2), and the inner side of the first bottom plate (6) is provided with a plurality of first studs (12). The first studs (12) pass through the outer insulation layer and the inner insulation layer in the first insulation structure (4) and support and fix the second bottom plate (10). The second side plate (11) is provided with four to form the peripheral side wall of the inner box (2), and the peripheral sides of the second bottom plate (10) and the second side plate (11) are respectively formed with an outward second bottom plate part (13) and a second side plate part (14).

4. The high-temperature instrument insulation box with double thermal insulation according to claim 3, characterized in that: The inner side of the box cover (3) is also provided with a third bottom plate (15), a third side plate (16) and a plurality of second studs (17). The third bottom plate (15) is set on the bottom side of the second insulation structure (5). The periphery of the third bottom plate (15) also forms an outward third bottom plate part (18). The third side plate (16) is provided with four parts and is set on the periphery of the outer insulation layer in the second insulation structure (5). The upper and lower sides of the third side plate (16) both form inward third side plate parts (19). The third side plate parts (19) on the same side are mated together. The second studs (17) pass through the outer insulation layer and the inner insulation layer in the second insulation structure (5) and provide support and fixation for the third bottom plate (15).

5. The high-temperature instrument insulation box with double thermal insulation according to claim 1, characterized in that: In the first insulation structure (4), a first felt layer (20) is provided between the outer insulation layer and the inner wall of the cavity, and in the second insulation structure (5), a second felt layer (21) is provided between the outer insulation layer and the inner insulation layer.

6. The high-temperature instrument insulation box with double thermal insulation according to claim 1, characterized in that: The insulated box also includes a lid sealing strip (22) and an inner sealing strip (23). The lid sealing strip (22) is arranged around the inside of the lid (3) and forms a sealing fit with the upper side of the outer box (1). The inner sealing strip (23) is arranged around the upper side of the inner box (2) and forms a sealing fit with the inner side of the lid (3).

7. A double-insulated, heat-insulating high-temperature instrument insulation box according to claim 6, characterized in that: The inner circumferential edge of the box cover (3) is provided with an L-shaped outer waterproof baffle (24), the horizontal end of the outer waterproof baffle (24) is set inward, and a drain hole (25) is provided on the vertical end of the outer waterproof baffle (24). The upper circumferential side of the outer box body (1) forms an inverted L-shaped inner waterproof baffle (26), the vertical end of the inner waterproof baffle (26) is higher than the height of the drain hole (25), and the horizontal end of the inner waterproof baffle (26) abuts against the sealing strip (22) of the box cover.

8. A double-insulated high-temperature instrument insulation box according to claim 1, characterized in that: The insulation box also includes an axial thermometer (27) and an internally fixed sleeve (28). The axial thermometer (27) is inserted through the box cover (3) into the inner cavity of the inner box (2). A connecting sleeve (29) is also fixedly provided on the temperature measuring rod of the axial thermometer (27). The outside of the connecting sleeve (29) is fixedly connected to the fixed sleeve (28). A sealing sleeve (30) is also provided inside the connecting sleeve (29). Sealing rings (31) are also provided on both the inner and outer sides of the axial thermometer (27).

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