High-temperature environment device capable of preventing cracking

Abstract

The utility model discloses an anti-cracking high-temperature environment device which comprises a furnace shell, an outgoing air heat insulation layer is fixedly arranged on the outer side of the furnace shell, a connecting buckle is arranged on the outgoing air heat insulation layer, an electric appliance box is arranged on the side, away from the connecting buckle, of the outgoing air heat insulation layer, an upper plug is fixedly arranged at the upper end in the furnace shell, and a lower plug is fixedly arranged at the lower end in the furnace shell. A lower plug is fixedly arranged at the lower end in the furnace shell, a hollow inner-layer gas heat insulation layer is arranged in the furnace shell, an outer-layer heat preservation layer is arranged on one side of the hollow inner-layer gas heat insulation layer, an inner-layer heat preservation layer is arranged on one side of the outer-layer heat preservation layer, and a plurality of resistance wires are arranged on the inner-layer heat preservation layer; the hearth is of a stacked structure, multi-layer stacking is conducted in the longitudinal direction, the part size is reduced in the transverse direction, and multi-layer tiling is conducted. And under the extremely-cold and rapid-heating working condition of high-temperature hot charging, a space for thermal expansion and cold contraction is reserved between the layers, so that the situation that the hearth is broken is prevented.

Description

Technical Field

[0001] This utility model relates to the field of heating device technology, specifically a high-temperature environment device to prevent cracking. Background Technology

[0002] In high-temperature materials mechanics testing, the high-temperature resistance furnace is a crucial environmental accessory, and its performance and stability directly affect the accuracy of the test results. Currently, the commonly used furnace structure for high-temperature resistance furnaces is an integrated design, with the insulation material and heating wire combined into a single component, machined and assembled as a whole. This structure is characterized by convenient installation and maintenance, and minimal overall component error. However, with the increasing prevalence of high-temperature mechanics testing, various organizations have requested a high-temperature hot-loading function for the furnace, allowing for sample replacement while the furnace is still in a high-temperature environment, in order to improve the efficiency of high-temperature mechanics testing. Based on past experience, a high-temperature tensile mechanics testing machine can complete approximately four tensile tests per day, or even fewer. This efficiency is extremely low for organizations with large testing volumes. To improve testing efficiency, organizations have developed a high-temperature hot-loading process. However, since the insulation material of high-temperature resistance furnaces is mostly made of alumina fiber, this material is highly susceptible to cracking under extreme temperature fluctuations. Over time, high-temperature resistance furnaces used under these conditions experience increased cracking, with some corners falling off entirely, ultimately leading to unstable temperature control and insulation, poor uniformity, and ultimately, the complete failure of the furnace. Utility Model Content

[0003] The purpose of this invention is to provide a high-temperature environment device to prevent cracking, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature environment device for preventing cracking, comprising a furnace shell, an outer air insulation layer fixedly provided on the outer side of the furnace shell, a connecting buckle provided on the outer air insulation layer, an electrical box provided on the side of the outer air insulation layer away from the connecting buckle, an upper plug fixedly provided at the upper end of the furnace shell, a lower plug fixedly provided at the lower end of the furnace shell, an inner air insulation layer provided inside the furnace shell, an outer insulation layer provided on one side of the inner air insulation layer, an inner insulation layer provided on one side of the outer insulation layer, and a plurality of resistance wires provided on the inner insulation layer.

[0005] Preferably, the furnace shell is composed of two semi-circular cylindrical bodies that are rotatably connected. The two semi-circular cylindrical bodies open and close in a rotating manner, and the semi-circular cylindrical bodies are sealed at the opening and closing seam through a concave-convex structure.

[0006] Preferably, the internal structure of the furnace shell adopts a stacked structure, with multiple layers stacked in the longitudinal direction and multiple layers laid flat in the transverse direction.

[0007] Preferably, the electrical box contains a circuit board and a control switch, and the electrical box is electrically connected to a resistance wire.

[0008] Preferably, both the outer insulation layer and the inner insulation layer are made of alumina fiber material.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. The furnace chamber adopts a stacked structure, with multiple layers stacked longitudinally and the volume of parts reduced laterally, laid flat in multiple layers. Under extreme hot-cold-hot conditions, space is reserved between layers for thermal expansion and contraction to prevent the furnace chamber from cracking;

[0011] 2. The insulation material uses alumina fiber with better temperature resistance and higher density. This material has significantly improved resistance to rapid heating and cooling in high-temperature environments, as well as its toughness at high temperatures. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the planing structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the furnace chamber of this utility model.

[0015] In the diagram: 1. Furnace shell; 2. Outer air insulation layer; 3. Connecting buckle; 4. Electrical box; 5. Upper plug; 6. Lower plug; 7. Inner air insulation layer; 8. Outer insulation layer; 9. Inner insulation layer; 10. Resistance wire. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] Please refer to 1-3. One embodiment of this utility model is provided: a high-temperature environment device to prevent cracking, including a furnace shell 1, an outer air insulation layer 2 fixedly provided on the outside of the furnace shell 1, a connecting buckle 3 provided on the outer air insulation layer 2, an electrical box 4 provided on the side of the outer air insulation layer 2 away from the connecting buckle 3, an upper plug 5 fixedly provided at the upper end of the furnace shell 1, a lower plug 6 fixedly provided at the lower end of the furnace shell 1, an inner air insulation layer 7 provided inside the furnace shell 1, an outer insulation layer 8 provided on one side of the inner air insulation layer 7, an inner insulation layer 9 provided on one side of the outer insulation layer 8, and a plurality of resistance wires 10 provided on the inner insulation layer 9. The electrical box 4 controls the resistance wires 10 to generate heat, thereby raising the temperature inside the furnace shell 1. The heat will pass through the inner insulation layer 9, the outer insulation layer 8 and the inner air insulation layer 7 in sequence. By utilizing multiple layers of insulation, the internal temperature is not lost and the heat dissipation is slow.

[0018] The furnace shell 1 serves as the main body of the device, bearing the installation of the inner insulation layer 9 and providing partial heat insulation. The outer insulation layer 8 is placed between the inner insulation layer 9 and the furnace shell 1, serving as the outer insulation layer. The inner insulation layer 9 is close to the center of the furnace and is in a multi-layer stacked form, mainly used for inner insulation and the installation of the resistance wire 10. The upper plug 5 and the lower plug 6 serve as the upper and lower insulation layers of the device, placed above and below the inner insulation layer 9 and the outer insulation layer 8.

[0019] The furnace shell 1 is composed of two semi-circular cylinders that are rotatably connected. The two semi-circular cylinders open and close in a rotating manner. The semi-circular cylinders are sealed at the opening and closing seam by a recessed and protruding structure. The recessed and protruding structure is existing technology and will not be described in detail. The recessed and protruding structure avoids excessive gaps in the opening and closing seam caused by assembly and processing errors. In addition to adding the recessed and protruding structure at the opening and closing seam, heat is prevented from leaking directly from the gap, thus ensuring the problem of excessive energy consumption of the device.

[0020] The internal structure of the furnace shell 1 adopts a stacked structure, with multiple layers stacked longitudinally and multiple layers laid flat laterally. The internal insulation layer 9 is also multi-layered. The internal structure of the furnace shell 1 has multiple layers stacked longitudinally and multiple layers laid flat laterally to reduce the volume of the parts. Under the extreme cold and heat conditions of high-temperature hot charging, space is reserved between the layers for thermal expansion and contraction to prevent the furnace from cracking.

[0021] The electrical box 4 contains a circuit board and a control switch, and the electrical box 4 is electrically connected to the resistance wire 10; the outer insulation layer 8 and the inner insulation layer 9 are both made of alumina fiber material; the material has significantly improved resistance to rapid cooling and heating in high-temperature environments, as well as its toughness at high temperatures.

Claims

1. A high-temperature environment device for preventing cracking, comprising a furnace shell (1), characterized in that: An external air insulation layer (2) is fixedly provided on the outside of the furnace shell (1). A connecting buckle (3) is provided on the external air insulation layer (2). An electrical box (4) is provided on the side of the external air insulation layer (2) away from the connecting buckle (3). An upper plug (5) is fixedly provided at the upper end of the furnace shell (1). A lower plug (6) is fixedly provided at the lower end of the furnace shell (1). An internal air insulation layer (7) is provided inside the furnace shell (1). An outer insulation layer (8) is provided on one side of the internal air insulation layer (7). An inner insulation layer (9) is provided on one side of the outer insulation layer (8). Several resistance wires (10) are provided on the inner insulation layer (9).

2. A high temperature environment device that prevents cracking as claimed in claim 1, wherein: The furnace shell (1) is composed of two semi-circular cylinders that are rotatably connected. The two semi-circular cylinders open and close in a rotating manner, and the semi-circular cylinders are sealed at the opening and closing seams by a concave-convex structure.

3. The high-temperature environment device for preventing cracking according to claim 1, characterized in that: The internal structure of the furnace shell (1) adopts a stacked structure, with multiple layers stacked in the longitudinal direction and multiple layers laid flat in the transverse direction.

4. The high temperature environment device of claim 1, wherein: The electrical box (4) is equipped with a circuit board and a control switch, and the electrical box (4) is electrically connected to a resistance wire (10).

5. The high temperature environment device of claim 1, wherein: Both the outer insulation layer (8) and the inner insulation layer (9) are made of alumina fiber material.

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