High-temperature experiment heating device for sample magnetic susceptibility detection

Abstract

The utility model relates to the technical field of heating devices, in particular to a high-temperature experiment heating device for sample magnetic susceptibility detection, which comprises a power supply, a temperature controller, a heating furnace, a sample frame, sample tubes and a temperature sensor, the sample frame is arranged at the top of the heating furnace, a plurality of small holes are arranged on the sample frame, and the sample tubes are arranged in the small holes on the sample frame. The temperature sensor is arranged in the empty sample tube; the temperature controller receives heating furnace internal temperature data uploaded by the temperature sensor, compares the received temperature data with a preset target temperature value, and then makes a corresponding instruction according to a comparison result. According to the utility model, a plurality of small holes for placing the sample tubes are formed in the sample rack, so that a plurality of samples can be heated at a time, the defect that only one sample can be heated at a time in the prior art is effectively overcome, and the working efficiency is improved; in addition, the two steps of testing and heating are separated, and the influence of current generated in the heating process on the accuracy of the testing result is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, and particularly relates to a high-temperature experimental heating device for detecting the magnetic susceptibility of samples. Background Technique

[0002] Paleomagnetism can be used in the research of disciplines such as structural geology, stratigraphic chronology, paleoclimate and paleoenvironment chemistry, reliability of paleomagnetic signals, changes in the direction and intensity of the earth's magnetic field, paleocurrent, and tracing of paleostress directions by extracting the information of the direction and intensity of the earth's magnetic field recorded in rocks, sediments, and substances such as ceramics and brick kilns left by human activities during the geological history period, and plays an important role in the research of the earth system science. Among them, an essential link in paleomagnetism research is the judgment of the accuracy of the characteristic remanent magnetism obtained.

[0003] The experiment of magnetic susceptibility varying with temperature, that is, the k-t curve, is the most effective, economical, and rapid means to judge and distinguish the types of magnetic minerals, the domain state, and the accuracy of characteristic remanent magnetism. At the same time, the experiment of magnetic susceptibility varying with temperature is also an indispensable experimental means for carrying out research in disciplines such as environmental magnetism and rock magnetism. Currently, the heating equipment available on the market for experimenting with the variation of magnetic susceptibility with temperature is the high-temperature system of the Kappabridge magnetic susceptibility meter produced by AGICO Company in the Czech Republic. When this system conducts experiments, the heater needs to be moved into or out of the detection coil of the rotary Kappabridge magnetic susceptibility meter. During testing, the heater and the sample are placed in the detection coil at the same time, and only one sample can be heated at a time, resulting in low working efficiency. In addition, the testing step and the heating step of this system are integrated, and current is generated during the heating process, which easily affects the accuracy of the test results. Content of the Utility Model

[0004] The utility model provides a high-temperature experimental heating device for detecting the magnetic susceptibility of samples to solve the technical problems raised in the above background technique.

[0005] The utility model provides a high-temperature experimental heating device for detecting the magnetic susceptibility of samples, including a power supply, a temperature controller, a heating furnace, a sample rack, a sample tube, and a temperature sensor. Among them, the power supply, the heating furnace, and the temperature sensor are connected to the temperature controller. The sample rack is arranged on the top of the heating furnace, and its characteristics are as follows:

[0006] The heating furnace is composed of a circular upper cover, a double-layer cylindrical barrel, several disc-shaped brackets, an inner liner, and a heating element. The circular upper cover is arranged on the top of the double-layer cylindrical barrel, and a first through hole is provided in the middle of the circular upper cover. Several disc-shaped brackets are axially arranged inside the double-layer cylindrical barrel; a second through hole is provided in the middle of each disc-shaped bracket, and the inner liner is arranged in the second through hole; several pairs of annular grooves are symmetrically distributed around each disc-shaped bracket, and the shape of each pair of annular grooves fits the contour of 2 heating elements;

[0007] The sample rack has an inverted frustum shape, with the top diameter of the sample rack > the bottom diameter of the sample rack. The sample rack is disposed on the first through hole, and the first through hole fits the top contour of the sample rack. The bottom diameter of the sample rack is consistent with the diameter of the second through hole. At the same time, a number of small holes are evenly arranged in a ring on the sample rack, and the sample tubes are placed in the small holes.

[0008] The temperature sensor is placed in an empty sample tube, and the empty sample tube is disposed in any one of the small holes on the sample rack, for collecting the internal temperature data of the heating furnace in real time.

[0009] The temperature controller is used to receive the internal temperature data of the heating furnace uploaded by the temperature sensor, compare the received temperature data with a preset target temperature value, and then send a working / stopping signal to the heating element according to the comparison result.

[0010] Preferably, the power supply is connected to the temperature controller through a power cord, the temperature sensor is connected to the temperature controller through a control line, and the temperature controller is electrically connected to the heating element in the heating furnace.

[0011] Preferably, the number of disk-shaped supports in the double-layer cylindrical inner layer is ≥2. The second through hole of the disk-shaped support at the uppermost position in the double-layer cylindrical inner layer abuts against the bottom of the sample rack, and the disk-shaped support at the lowermost position in the double-layer cylindrical inner layer abuts against the bottom of the double-layer cylindrical inner layer.

[0012] In addition, the top of the inner liner is flush with the disk-shaped support at the uppermost position in the double-layer cylindrical inner layer, and the bottom of the inner liner abuts against the bottom of the double-layer cylindrical inner layer. The top of the heating element is higher than the disk-shaped support at the uppermost position in the double-layer cylindrical inner layer, and the bottom of the heating element abuts against the bottom of the double-layer cylindrical inner layer.

[0013] Preferably, the circular upper cover is made of a non-magnetic material, the disk-shaped support is made of a high-temperature resistant material, the sample rack is made of a high-temperature resistant and heat-insulating material, the inner liner and the sample tube are made of a high-temperature resistant and non-magnetic material. The double-layer cylindrical inner layer consists of an outer layer barrel and an inner layer barrel, where the outer layer barrel is made of a non-magnetic material and the inner layer barrel is made of a high-temperature resistant and non-magnetic material.

[0014] Preferably, the circular upper cover is made of aluminum, the disk-shaped support and the sample rack are made of aluminosilicate materials, the inner liner and the sample tube are glass tubes made of quartz glass materials. The outer layer barrel is made of aluminum, the inner layer barrel is made of quartz glass materials, and the gap between the outer layer barrel and the inner layer barrel is filled with heat-insulating cotton or heat-insulating blankets.

[0015] Preferably, when the number of disk-shaped supports in the double-layer cylindrical inner layer is ≥3, the disk-shaped supports are evenly arranged at equal intervals.

[0016] In addition, the diameter of the disk-shaped support is consistent with the inner diameter of the inner layer barrel of the double-layer cylindrical inner layer, and each disk-shaped support is placed in the double-layer cylindrical inner layer after being wrapped with a heat-insulating blanket.

[0017] Preferably, the heating element is a heating tube or a heating wire, and a limiting part is arranged between the heating element and the annular groove.

[0018] Preferably, the heating tube is a halogen heating tube or a carbon fiber heating tube, and the limiting part is heat-insulating cotton.

[0019] Preferably, the diameter of the sample tube < the diameter of the small hole on the sample rack; in addition, a heat-insulating bandage with a thickness of 5 - 6 cm is wound around the top of the sample tube, and the diameter of the sample tube after winding the heat-insulating bandage around the top > the diameter of the small hole on the sample rack.

[0020] Preferably, a control panel and a display screen are arranged on the front side of the temperature controller, wherein the control panel is used for starting / stopping the device operation or setting the temperature threshold, and the display screen is used for displaying the internal temperature data of the heating furnace uploaded by the temperature sensor.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. By separating the testing and heating steps, the utility model effectively avoids the influence of the current generated during the heating process on the accuracy of the test results.

[0023] 2. By arranging a plurality of small holes for placing sample tubes on the sample rack, the utility model realizes heating multiple samples at one time, effectively solves the defect that only one sample can be heated at one time in the prior art, and improves the working efficiency.

[0024] 3. By designing a double-layer cylindrical barrel and a plurality of disc-shaped supports, and arranging annular grooves on each disc-shaped support to fix the heating element, the utility model helps to achieve uniform distribution of the temperature inside the heating furnace; meanwhile, the symmetric distribution of the heating element and the design of multiple layers of disc-shaped supports enable the heat to be transferred more evenly to the inner liner and the sample area, further ensuring that the temperature conditions received by the samples during the heating process are consistent, thereby improving the accuracy and reliability of the sample magnetic susceptibility detection.

[0025] 4. By designing the sample rack as an inverted frustum structure, the utility model enables the sample rack to be stably placed in the heating furnace, and meanwhile, the small hole design on it facilitates the placement and fixation of the sample tube, improving the convenience and stability of the experimental operation. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Overall structure diagram of the high-temperature experimental heating device provided by the present utility model;

[0028] Figure 2 Front elevation sectional view structure diagram of the heating furnace provided by the present utility model;

[0029] Figure 3 Internal top view structure diagram of the heating furnace provided by the present utility model;

[0030] Figure 4 Top view structure diagram of the sample rack provided by the present utility model;

[0031] Figure 5 Front elevation structure diagram of the sample tube provided by the present utility model. Specific implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] As Figures 1-5 shown, the present utility model provides a high-temperature experimental heating device for sample magnetic susceptibility detection, including a power supply 1, a temperature controller 2, a heating furnace 3, a sample rack 4, a sample tube 5, and a temperature sensor 6. Among them, the power supply 1, the heating furnace 3, and the temperature sensor 6 are connected to the temperature controller 2, and the sample rack 4 is arranged on the top of the heating furnace 3.

[0035] As Figure 2 shown, the heating furnace 3 involved in the present utility model is composed of a circular upper cover 31, a double-layer circular barrel 32, a plurality of disc-shaped brackets 33, an inner liner 34 and a heating element 35. The circular upper cover 31 is arranged at the top of the double-layer circular barrel 32, and a first through hole 311 is provided in the middle of the circular upper cover 31. A plurality of disc-shaped brackets 33 are axially arranged in the double-layer circular barrel 32; a second through hole 331 is provided in the middle of each disc-shaped bracket 33, and the inner liner 34 is arranged in the second through hole 331; a plurality of pairs of annular grooves 332 are symmetrically distributed around the periphery of each disc-shaped bracket 33, and the shape of each pair of annular grooves 332 fits the contour of 2 heating elements 35.

[0036] As Figure 3 shown, in the embodiment of the present application, 4 pairs of annular grooves 332 are symmetrically distributed around the periphery of each disc-shaped bracket 33. In actual use, the number of annular grooves 332 can be set according to actual situations.

[0037] Preferably, the power supply 1 is connected to the temperature controller 2 through a power cord, the temperature sensor 6 is connected to the temperature controller 2 through a control line, and the temperature controller 2 is electrically connected to the heating element 35 in the heating furnace 3.

[0038] Preferably, the number of disc-shaped brackets 33 in the double-layer circular barrel 32 ≥ 2. The second through hole 331 of the disc-shaped bracket 33 located at the uppermost part in the double-layer circular barrel 32 abuts against the bottom of the sample rack 4, and the disc-shaped bracket 33 located at the lowermost part in the double-layer circular barrel 32 abuts against the bottom of the double-layer circular barrel 32.

[0039] Preferably, the top of the inner liner 34 is flush with the disc-shaped bracket 33 located at the uppermost part in the double-layer circular barrel 32, and the bottom of the inner liner 34 abuts against the bottom of the double-layer circular barrel 32; the top of the heating element 35 is higher than the disc-shaped bracket 33 located at the uppermost part in the double-layer circular barrel 32, and the bottom of the heating element 35 abuts against the bottom of the double-layer circular barrel 32.

[0040] Preferably, when the number of disc-shaped brackets 33 in the double-layer circular barrel 32 ≥ 3, the disc-shaped brackets 33 are arranged at equal intervals.

[0041] As Figure 2 shown, 2 disc-shaped brackets 33 are provided in the embodiment of the present application. In actual use, the number of disc-shaped brackets 33 can be set according to actual situations.

[0042] Preferably, each disc-shaped bracket 33 is wrapped by a heat-insulating cotton blanket 333 and placed in the double-layer circular barrel 32, and a limiting part is arranged between the heating element 35 and the annular groove 332, and the limiting part is heat-insulating cotton.

[0043] In the embodiment of the present application, by using heat-insulating cotton as the limiting part, it is closely attached between the heating element 35 and the annular groove 332, playing a role of fixing and limiting, which helps to prevent the heating element 35 from shifting or shaking during the heating process, ensuring that the heating element always stays in the correct position and uniformly transferring heat to the inner container 34 and the sample area.

[0044] Preferably, the double-layer cylinder 32 is composed of an outer cylinder 321 and an inner cylinder 322, where the outer cylinder 321 is made of non-magnetic material and the inner cylinder 322 is made of high-temperature resistant non-magnetic material; meanwhile, the gap between the outer cylinder 321 and the inner cylinder 322 is filled with heat-insulating cotton or heat-insulating cotton blanket.

[0045] In the embodiment of the present application, the outer cylinder 321 is made of aluminum and the inner cylinder 322 is made of quartz glass.

[0046] Preferably, the circular upper cover 31 is made of non-magnetic material, the disc-shaped bracket 33 is made of high-temperature resistant material, and the inner container 34 is made of high-temperature resistant non-magnetic material.

[0047] In the embodiment of the present application, the circular upper cover 31 is made of aluminum, the disc-shaped bracket 33 is made of aluminosilicate material, and the inner container 34 is a glass tube made of quartz glass.

[0048] Preferably, the diameter of the disc-shaped bracket 33 is the same as the inner diameter of the inner cylinder 322 of the double-layer cylinder 32.

[0049] Preferably, the heating element 35 in the heating furnace 3 is a heating tube or a heating wire, where the heating tube is a halogen heating tube or a carbon fiber heating tube.

[0050] As Figure 2 shown, the sample rack 4 involved in the present utility model is of an inverted frustum shape, the top diameter of the sample rack 4 > the bottom diameter of the sample rack 4, the sample rack 4 is arranged on the first through hole 311, and the first through hole 311 fits the top contour of the sample rack 4, the bottom diameter of the sample rack 4 is the same as the diameter of the second through hole 331; meanwhile, a number of small holes are arranged at equal intervals in a ring on the sample rack 4, and the sample tube 5 is placed in the small holes.

[0051] In the embodiment of the present application, the first through hole 311 fits the top contour of the sample rack 4, ensuring that the sample rack 4 can be stably covered on the heating furnace 3 when placed; meanwhile, the bottom diameter of the sample rack 4 coincides with the diameter of the second through hole 331 in the heating furnace, forming a tight hot gas barrier in the heating furnace 3, preventing hot gas from escaping while reducing the intrusion of external cold air, and further improving the heat preservation effect and heating efficiency of the heating furnace.

[0052] As Figure 4As shown, in the embodiment of the present application, 6 small holes are arranged at equal intervals in a ring on the sample rack 4, and the number of small holes can be set according to requirements during actual use.

[0053] Preferably, the sample rack 4 is made of a high-temperature resistant and heat-insulating material, and the sample tube 5 is made of a high-temperature resistant and non-magnetic material.

[0054] As Figure 5 shown, in the embodiment of the present application, the sample rack 4 is made of aluminosilicate material, and the sample tube 5 is a glass tube made of quartz glass material.

[0055] Preferably, the diameter of the sample tube 5 < the diameter of the small holes on the sample rack 4; in addition, a heat-insulating bandage with a thickness of 5 - 6 cm is wound around the top of the sample tube 5, and the diameter of the sample tube 5 after winding the heat-insulating bandage at the top > the diameter of the small holes on the sample rack 4.

[0056] In the embodiment of the present application, by making the diameter of the small holes on the sample rack 4 > the diameter of the sample tube 5, it is convenient for the sample tube 5 to be inserted into the sample rack 4, and the diameter of the sample tube 5 after winding the heat-insulating bandage at the top > the diameter of the small holes on the sample rack 4, which can effectively ensure that the sample tube 5 is placed and inserted into the sample rack 4 without falling into the heating furnace 3; in addition, by winding the heat-insulating bandage around the top of the sample tube 5, it is convenient for the experimenter to take the sample tube 5 in a safer manner.

[0057] The temperature sensor 6 involved in the present utility model is placed in the empty sample tube 5, and the empty sample tube 5 is arranged in any one of the small holes on the sample rack 4 for real-time collection of the internal temperature data of the heating furnace 3.

[0058] The temperature controller 2 involved in the present utility model is used to receive the internal temperature data of the heating furnace 3 uploaded by the temperature sensor 6, and compare the received temperature data with a preset target temperature value. When the received temperature data is lower than the preset target temperature value, the temperature controller 2 sends a working signal to the heating element 35 to drive the heating element 35 to heat in the heating furnace 3 until the temperature data received by the temperature controller 2 again is equal to the preset target temperature value, and then the temperature controller 2 sends a stop signal to the heating element 35.

[0059] Preferably, a control panel 21 and a display screen 22 are provided on the front side of the temperature controller 2, where the control panel 21 is used for starting / stopping the device operation or setting the temperature value, and the display screen 22 is used for displaying the internal temperature data of the heating furnace 3 uploaded by the temperature sensor 6.

[0060] The temperature controller 2 used in the present utility model is a Transmit temperature controller, which includes five parts: a sensor signal acquisition module, a single-chip microcomputer signal processing module, a display unit module, an output unit module, and a power supply module. Among them, the sensor signal acquisition module uses a temperature sensor 6 to collect the internal temperature data of the heating furnace 3. A judgment program for comparing the collected temperature data with a preset target temperature value is pre-set in the single-chip microcomputer signal processing module, and corresponding instructions are set according to the judgment result.

[0061] The working principle of the present utility model is as follows: First, after the staff connects the power supply 1, the temperature controller 2, and the heating furnace 3 in sequence, an empty sample tube 5 and multiple sample tubes 5 containing samples are inserted into the small holes on the sample rack 4. A temperature sensor 6 is placed in the empty sample tube 5, and after setting the target temperature value on the control panel 21, the start operation is performed to make the device start running; Second, the temperature sensor 6 starts to monitor the internal temperature of the heating furnace 3 in real time, and uploads the detected temperature data to the temperature controller 2 in real time. The temperature controller 2 compares the received temperature data with the preset target temperature value. When the received temperature data is lower than the preset target temperature value, the temperature controller 2 sends a working signal to the heating element 35 to drive the heating element to heat in the heating furnace 3 until the temperature data received by the temperature controller 2 again is equal to the preset target temperature value. At this time, the temperature controller 2 sends a stop signal to the heating element, and at the same time, the sample tube 5 is taken out and placed in a Kappa bridge magnetic susceptibility meter to measure the magnetic susceptibility of the sample at this temperature; Third, after the measurement is completed, the sample tube 5 is continued to be placed in the sample rack, and after resetting the target temperature value on the control panel 21, the device continues to run. In this way, the measurement of the magnetic susceptibility of the sample at multiple heating temperature points is completed.

[0062] On the contrary, when measuring the magnetic susceptibility of the sample during cooling, the staff sets the target temperature value on the control panel 21 and then performs the start operation. The temperature sensor 6 starts to monitor the internal temperature of the heating furnace 3 in real time, and uploads the detected temperature data to the temperature controller 2 in real time. The temperature controller 2 compares the received temperature data with the preset target temperature value. When the received temperature data is higher than the preset target temperature value, the temperature controller 2 sends a stop signal to the heating element 35, and the heating element 35 stops heating in the heating furnace until the temperature data received by the temperature controller 2 again is equal to the preset target temperature value. At this time, the staff takes out the sample tube 5 and places it in a Kappa bridge magnetic susceptibility meter to measure the magnetic susceptibility of the sample at this temperature; After the measurement is completed, the sample tube 5 is continued to be placed in the sample rack, and after resetting the target temperature value on the control panel 21, the device continues to run. In this way, the measurement of the magnetic susceptibility of the sample at multiple cooling temperature points is completed.

[0063] It should be noted that during the heating process, the staff will constantly monitor the temperature inside the heating furnace 3 through the display screen 22. Therefore, in the embodiments of the present application, the temperature controller 2 does not set a prompt sound when the temperature reaches the target temperature value.

[0064] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-temperature experimental heating device for sample magnetic susceptibility detection, comprising a power supply, a temperature controller, a heating furnace, a sample rack, a sample tube, and a temperature sensor, wherein the power supply, the heating furnace, the temperature sensor and the temperature controller are connected, and the sample rack is placed on the top of the heating furnace, characterized in that: The heating furnace is composed of a circular upper cover, a double-layered barrel, a plurality of disc-shaped brackets, an inner liner and a heating element, wherein the circular upper cover is arranged on the top of the double-layered barrel and a first through hole is arranged in the middle of the circular upper cover, and a plurality of disc-shaped brackets are axially arranged in the double-layered barrel; a second through hole is arranged in the middle of each disc-shaped bracket, and the inner liner is arranged in the second through hole; each disc-shaped bracket has a plurality of pairs of annular grooves symmetrically distributed around it, and the shape of each pair of annular grooves matches the contours of two heating elements; The sample rack is an inverted truncated cone structure, the top diameter of the sample rack is greater than the bottom diameter of the sample rack, the sample rack is arranged on the first through hole, and the first through hole is matched with the top contour of the sample rack, and the bottom diameter of the sample rack is consistent with the diameter of the second through hole; at the same time, a plurality of small holes are arranged at equal intervals in a ring on the sample rack, and the sample tubes are placed in the small holes; The temperature sensor is placed in an empty sample tube, and the empty sample tube is set in any small hole on the sample rack, and is used to collect the internal temperature data of the heating furnace in real time; The temperature controller is used to receive the internal temperature data of the heating furnace uploaded by the temperature sensor, and after comparing the received temperature data with the preset target temperature value, send a start / stop signal to the heating element according to the comparison result.

2. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 1, characterized in that: The power supply is connected to the temperature controller via a power line, the temperature sensor is connected to the temperature controller via a control line, and the temperature controller is electrically connected to the heating element in the heating furnace.

3. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 2, characterized in that: The number of the disc-shaped brackets in the double-layer barrel is ≥ 2, the second through hole of the disc-shaped bracket located at the top of the double-layer barrel abuts against the bottom of the sample holder, and the disc-shaped bracket located at the bottom of the double-layer barrel abuts against the bottom of the double-layer barrel; In addition, the top of the inner tank is flush with the top disc-shaped bracket in the double-layer barrel, and the bottom of the inner tank abuts the bottom of the double-layer barrel; the top of the heating element is higher than the top disc-shaped bracket in the double-layer barrel, and the bottom of the heating element abuts the bottom of the double-layer barrel.

4. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 3, characterized in that: The circular upper cover is made of non-magnetic material, the disc-shaped bracket is made of high-temperature resistant material, the sample rack is made of high-temperature resistant heat-insulating material, and the inner tank and sample tube are made of high-temperature resistant non-magnetic material; the double-layer barrel consists of an outer barrel and an inner barrel, wherein the outer barrel is made of non-magnetic material and the inner barrel is made of high-temperature resistant non-magnetic material.

5. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 4, characterized in that: The circular upper cover is made of aluminum, the disc-shaped bracket and the sample rack are made of aluminosilicate material, the inner tank and the sample tube are glass tubes made of quartz glass; the outer barrel is made of aluminum, the inner barrel is made of quartz glass, and the gap between the outer barrel and the inner barrel is filled with insulation cotton or insulation cotton blanket.

6. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 5, characterized in that: When the number of disc-shaped brackets in the double-layer drum is ≥3, the disc-shaped brackets are arranged at equal intervals; In addition, the diameter of the disc-shaped bracket is consistent with the inner diameter of the inner barrel of the double-layer barrel, and each disc-shaped bracket is wrapped with a heat-insulating cotton blanket and placed in the double-layer barrel.

7. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 6, characterized in that: The heating element is a heating tube or a heating wire, and a limiting portion is arranged between the heating element and the annular groove.

8. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 7, characterized in that: The heating tube is a halogen heating tube or a carbon fiber heating tube, and the limiting part is heat-insulating cotton.

9. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 8, characterized in that: The diameter of the sample tube is smaller than the diameter of the small hole on the sample rack; in addition, a 5-6 cm thick heat insulating bandage is wrapped around the top of the sample tube, and the diameter of the top of the sample tube after being wrapped with the heat insulating bandage is larger than the diameter of the small hole on the sample rack.

10. The high temperature experimental heating device for sample magnetic susceptibility detection according to claim 9, characterized in that: A control panel and a display screen are provided on the front side of the temperature controller, wherein the control panel is used to start / stop the device operation or set the temperature threshold, and the display screen is used to display the internal temperature data of the heating furnace uploaded by the temperature sensor.

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