A high temperature ceramic heating device

Abstract

The utility model discloses a high temperature ceramic heating device relates to ceramic heating technical field, including base, the top of base is provided with the top seat, and the whole of base and top seat is round piece shape, and the middle part of base and top seat is provided with through -hole, and this through -hole forms the heating area, and the top seat is provided with a plurality of thread -through holes of circular array distribution, still include heating wire, and heating wire passes through thread -through hole in single -layer dense winding mode, and the spacing of adjacent heating wire is even, and both ends are fixed through the snap groove of thread -through hole edge. In the utility model, through optimizing heating wire around structure and threading mode, make heat more concentrate in heating area, realized with lower power reaches higher heating temperature's effect, solved the problem of traditional resistance heating heat efficiency low, and heating wire carries out orderly around through the thread -through hole of circular array distribution, has guaranteed the temperature even distribution of heating area, has improved the reliability and repeatability of experimental data.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic heating technology, specifically, it relates to a high-temperature ceramic heating device. Background Technology

[0002] In the static high-pressure technology DAC (diamond anvil device), experimenters can usually complete high-temperature and high-pressure experiments at the gigapascal level. DAC experiments typically involve various experimental environments such as optical, fluorescence, electrical, low-temperature, high-temperature, and transient absorption.

[0003] There are two types of existing DAC heating technologies: laser heating and resistance heating. Although laser heating can reach very high temperatures, the equipment and maintenance costs are very high. A typical system costs hundreds of thousands or even millions of dollars and requires dedicated personnel for maintenance. Resistance heating is relatively inexpensive, but traditional resistance heating is not very efficient, has a slow heating rate, and cannot prevent temperature diffusion, which will accelerate the aging of the compressor.

[0004] There are currently no effective solutions to the problems in the relevant technologies.

[0005] Therefore, in order to solve the above problems, this utility model provides a high-temperature ceramic heating device. Utility Model Content

[0006] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a high-temperature ceramic heating device that improves heating efficiency by optimizing the structure and changing the wiring method, thereby achieving higher heating temperature with lower power.

[0007] The objective of this utility model can be achieved through the following technical solutions: A high-temperature ceramic heating device includes a base, a top seat at the top of the base, the base and the top seat being a circular plate, a through hole in the middle of the base and the top seat forming a heating zone, and a plurality of wire holes arranged in a circumferential array on the top seat. It also includes heating wires, which are threaded through the wire hole in a single-layer tightly wound manner, with the spacing between adjacent heating wires being uniform, and both ends being fixed by the slots on the edge of the wire hole.

[0008] As a preferred technical solution of this utility model, the base and the top seat are made of alumina ceramic powder and are integrally fired by casting.

[0009] As a preferred embodiment of this utility model, the overall height of the base and the top seat is 2.5mm, and the diameter of the base is 20mm.

[0010] As a preferred embodiment of this invention, the diameter of the heating wire is 0.25-0.4 mm.

[0011] As a preferred technical solution of this utility model, the heating zone is located at the center of the heating space formed by the heating wire, the diameter of the through hole is adapted to the sample stage of the diamond anvil device, and the heating zone is concentrically set with the anvil surface of the diamond anvil.

[0012] As a preferred embodiment of this utility model, one end of the heating wire is connected to a first power line, and the other end of the heating wire is connected to a second power line. One end of the first power line and the second power line are connected to an external circuit through a high-temperature resistant terminal block.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, by optimizing the heating wire winding structure and the wire threading method, the heat is more concentrated in the heating zone, achieving the effect of reaching a higher heating temperature with lower power, thus solving the problem of low thermal efficiency of traditional resistance heating.

[0014] 2. In this invention, the heating wire is arranged in an orderly manner through a circumferentially distributed array of through-holes, which ensures a uniform temperature distribution in the heating area and improves the reliability and repeatability of experimental data.

[0015] 3. In this utility model, the wire hole design makes the heating wire installation process simple and easy, reduces the assembly difficulty, improves production efficiency and maintenance convenience, and achieves the design goal of "simple wire threading".

[0016] 4. In this invention, the resistance heating wire passes through the inside of the ceramic ring, which has a heat insulation effect and can effectively suppress temperature diffusion and reduce press aging. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of the ceramic ring of this utility model; Figure 2 This is a schematic diagram of the planar structure of the heating wire wound on the ceramic ring body of this utility model.

[0019] Figure label: 1. Base; 2. Top mount; 3. Heating zone; 4. Wire hole; 5. Heating wire; 6. Power line one; 7. Power line two. Detailed Implementation

[0020] The utility model will now be further described with reference to the accompanying drawings and specific embodiments: Please see Figure 1 and Figure 2 According to an embodiment of the present invention, a high-temperature ceramic heating device includes a base 1, a top seat 2 at the top of the base 1, the base 1 and the top seat 2 are generally circular, the base 1 and the top seat 2 are made of alumina ceramic powder, which has a heat insulation effect, can effectively suppress temperature diffusion, reduce press aging, and are integrally fired by casting. A through hole is opened in the middle part of the base 1 and the top seat 2, which forms a heating zone 3. The base 1 and the top seat 2 constitute the main body of the ceramic ring, support the heating wire 5 and form the heating zone 3. This structure is relatively stable, resistant to high temperature and has good electrical insulation. The overall height of the base 1 and the top seat 2 is 2.5mm, the diameter of the base 1 is 20mm, and the top seat 2 is provided with a number of wire holes 4 arranged in a circumferential array. The heating zone 3 provides sample placement space and heat conduction path, and the heating zone 3 optimizes the heat field distribution, so that the sample is heated evenly. Please see Figure 1 and Figure 2 It also includes a heating wire 5, which is threaded through the wire hole 4 in a single-layer tightly wound manner. The spacing between adjacent heating wires is uniform, and both ends are fixed by the slots on the edge of the wire hole 4. The diameter of the heating wire 5 is 0.25-0.4mm. The heating wire 5 provides a high-temperature environment for DAC experiments through resistance heating. The 0.25-0.4mm fine diameter design can achieve tight winding and improve heating efficiency. The heating wire 5 has good high-temperature oxidation resistance and high resistivity, making it suitable for high-temperature heating scenarios. It can meet high-temperature requirements with low power and has high energy efficiency.

[0021] Please see Figure 1 and Figure 2 The heating zone 3 is located at the center of the heating space formed by the heating wire 5. The diameter of the through hole is adapted to the sample stage of the diamond anvil device, and the heating zone 3 is concentrically set with the anvil surface of the diamond anvil.

[0022] Please see Figure 2 One end of the heating wire 5 is connected to a power line 6, and the other end of the heating wire 5 is connected to a power line 7. One end of the power line 6 and the power line 7 are connected to an external circuit through a high-temperature resistant terminal block. The power line 6 and the power line 7 provide a stable power supply for the heating wire 5. The design of connecting the two ends separately ensures the integrity of the current loop. The power line 6 and the power line 7 can be made of high-temperature resistant wires to adapt to the high-temperature working environment of the heating device.

[0023] The working principle of a high-temperature ceramic heating device is as follows: The main body of the device consists of a base 1 and a top seat 2, both of which are integrally fired from alumina ceramic powder using a casting mold. The excellent high-temperature resistance and heat insulation properties of alumina ceramic provide stable support for the heating system and reduce heat loss. The through-hole between the top seat 2 and the base 1 forms a heating zone 3, used to place the sample of the diamond anvil cell device, placing it at the heating center. The wire holes 4 on the top seat 2 are arranged in a circular array around the heating zone 3, guiding the heating wire 5 to surround the outside of the heating zone 3, ensuring heat concentration towards the center. When the first power line 6 and the second power line 7 are connected to an external power source, current flows through the heating wire 5. The Joule effect converts electrical energy into heat energy, and heating wire 5 generates high temperature. Heating wire 5 has high resistivity and good high temperature stability, and can generate the required high temperature under low power input. The heat is mainly transferred to the central heating zone 3 through thermal radiation and thermal conduction, providing a uniform and stable high temperature environment for the experimental samples of the diamond anvil cell device. At the same time, the alumina ceramic material has low thermal conductivity, which can effectively prevent heat from diffusing to the press equipment below the base, reducing heat loss and protecting the accuracy and life of the press. The design of the wire hole 4 not only ensures the uniform distribution of heating wire, but also fixes the position of heating wire, avoiding uneven heating caused by deformation of heating wire 5 at high temperature.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high temperature ceramic heating device, characterized by: Includes a base (1), and a top seat (2) is provided at the top of the base (1). The base (1) and the top seat (2) are generally circular. A through hole is provided in the middle part of the base (1) and the top seat (2), which forms a heating zone (3). Several wire holes (4) are provided on the top seat (2) in a circular array. It also includes a heating wire (5), which is passed through the wire hole (4) in a single-layer tightly wound manner. The spacing between adjacent heating wires is uniform, and the two ends are fixed by the slots on the edge of the wire hole (4).

2. A high temperature ceramic heating device according to claim 1, characterized in that: The base (1) and top seat (2) are made of alumina ceramic powder and are integrally fired by casting.

3. The high-temperature ceramic heating device according to claim 1, characterized in that: The overall height of the base (1) and the top seat (2) is 2.5 mm, and the diameter of the base (1) is 20 mm.

4. The high-temperature ceramic heating device according to claim 1, characterized in that: The diameter of the heating wire (5) is 0.25-0.4 mm.

5. The high-temperature ceramic heating device according to claim 1, characterized in that: The heating zone (3) is located at the center of the heating space formed by the heating wire (5), the diameter of the through hole is adapted to the sample stage of the diamond anvil device, and the heating zone (3) is concentrically set with the anvil surface of the diamond anvil.

6. The high-temperature ceramic heating device according to claim 1, characterized in that: One end of the heating wire (5) is connected to a first power line (6), and the other end of the heating wire (5) is connected to a second power line (7). One end of the first power line (6) and the second power line (7) are connected to an external circuit through a high-temperature resistant terminal block.

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