High and low temperature vibration sample magnetometer and temperature adjusting device

Abstract

The invention provides a high and low temperature vibration sample magnetometer, which comprises an excitation assembly, a temperature change assembly, a moving assembly, a vibration sample rod assembly and an induction assembly, and is characterized in that the temperature change assembly comprises a sleeve, a gas supply pipe and a heater, and the temperature change assembly is installed on the moving assembly; the moving assembly is configured to be capable of driving the temperature change assembly to be switched between the state that the detected object is located on the inner side of the sleeve and the state that the detected object is located on the outer side of the sleeve, so that the temperature adjustment difficulty of the detected object is greatly reduced, and the vibration sample magnetometer can detect the detected objects at different temperatures. The invention further provides a temperature adjusting device, the temperature adjusting device can be conveniently combined with existing vibration sample magnetometer equipment, the implementation and modification cost is low, the temperature of the detected object can be effectively adjusted, and magnetic detection of the detected object in the high and low temperature state is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic measurement, and in particular relates to a high-low temperature vibrating sample magnetometer and a temperature regulating device. Background Art

[0002] Vibrating sample magnetometer is an important means of measuring the magnetic properties of materials. It evaluates the magnetic properties of materials by measuring the magnetic moment of a sample that is micro-vibrating at a certain frequency and amplitude near a set of detection coils. Vibrating sample magnetometer can be used to measure the magnetism of various types of materials, including metals, alloys, ceramics, oxides, magnetic materials, etc. It can measure magnetic parameters such as magnetization curves, hysteresis loops, magnetic susceptibility, residual magnetization, etc., and has a wide range of uses.

[0003] In some cases, it is necessary to place the object under test at different temperatures to detect the magnetism of the object under the corresponding state, so as to obtain the performance of the object under test at different temperatures. How to adjust the temperature of the object under test in a vibrating state is an important issue that needs to be solved urgently.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0005] In order to provide a vibrating sample magnetometer capable of detecting the magnetism of an object to be measured under high and low temperature conditions, the present invention provides a high and low temperature vibrating sample magnetometer, including an excitation component, a temperature change component, a moving component, a vibrating sample rod component, and a sensing component. The vibrating sample rod component includes a sample rod and a vibration source. The sample rod is connected to the vibration source. The sample rod is configured to carry the object to be measured at a preset position. The excitation component is configured to generate a magnetic field at least at the preset position. The sensing component is arranged close to the preset position. The temperature change component is The invention comprises a sleeve, an air supply pipe and a heater. One end of the sleeve is open and the other end is connected to the air supply pipe. The open end of the sleeve is configured to allow the sample rod to extend into the preset position. The open end of the sleeve is made of non-magnetic material. The heater is arranged on the inner side of the sleeve and a gap is arranged between the open end of the sleeve. The air supply pipe is connected to an air source. The temperature-changing component is installed on the moving component. The moving component is configured to drive the temperature-changing component to switch between the object to be measured being inside the sleeve and the object to be measured being outside the sleeve.

[0006] Preferably, the moving component comprises a lifting platform, and the temperature changing component is installed on a lifting side of the lifting platform.

[0007] Preferably, the axis of the open end of the sleeve is parallel to the length direction of the sample rod.

[0008] Preferably, a gap is provided between the heater and the inner wall of the sleeve.

[0009] Preferably, the sleeve comprises an outer tube and an inner tube, the outer tube and the inner tube are arranged at an interval, and the outer tube is sleeved on the outer side of the inner tube.

[0010] Further preferably, the sleeve further includes an insulation layer, and the insulation layer is arranged between the outer tube and the inner tube.

[0011] Preferably, the sleeve further comprises a gas guide, wherein the gas guide is arranged at one end of the inner side of the sleeve close to the gas supply pipe, and the gas guide is provided with an opening.

[0012] Preferably, the moving component comprises a horizontal displacement platform, and the horizontal displacement platform is configured to be capable of driving the temperature change component to move horizontally.

[0013] Preferably, the temperature change component further includes a thermal insulation sleeve, and the thermal insulation sleeve is sleeved on the outside of the air supply pipe.

[0014] The present invention also provides a temperature regulating device, which can be used for a vibrating sample magnetometer, including a temperature variable component and a moving component. The temperature variable component includes a sleeve, an air supply pipe, and a heater. One end of the sleeve is open and the other end is connected to the air supply pipe. The open end of the sleeve is made of non-magnetic material. The open end of the sleeve is constructed in a form that allows an object to be measured to be inserted. The heater is arranged on the inner side of the sleeve and a gap is provided between the heater and the open end of the sleeve. The air supply pipe is connected to an air source. The temperature variable component is connected to the moving component, and the moving component is constructed in a form that can at least drive the sleeve to move.

[0015] The present invention has at least the following beneficial effects: the high and low temperature vibrating sample magnetometer provided by the present invention can realize the switching of the high and low temperature environment of the object to be measured without any adjustment to the installation and fixation of the object to be measured, which greatly reduces the difficulty of temperature adjustment of the object to be measured, so that the vibrating sample magnetometer can detect the object to be measured at different temperatures, and can meet the detection requirements of the object to be measured from extremely low temperature to high temperature, and has a wide range of applications. The present invention also provides a temperature adjustment device, which can be easily combined with the existing vibrating sample magnetometer equipment, has low implementation and modification costs, and can effectively adjust the temperature of the object to be measured, and realize magnetic detection of the object to be measured in high and low temperature states. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of an embodiment of the high and low temperature vibrating sample magnetometer provided by the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of another state of the embodiment shown.

[0018] Figure 3 This is a schematic diagram of an embodiment of the temperature regulating device provided by the present invention.

[0019] Figure 4 This is a cross-sectional view of an embodiment of the temperature regulating device provided by the present invention.

[0020] Figure 5 for Figure 4 An enlarged view of section A of the illustrated embodiment. DETAILED DESCRIPTION

[0021] In order to make the purpose and features of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and use inaccurate ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] The present invention provides a high-low temperature vibrating sample magnetometer, comprising an excitation component 100, a temperature change component 200, a moving component 300, a vibrating sample rod component 400, and a sensing component 500. The vibrating sample rod component 400 comprises a sample rod 410 and a vibration source 420. The sample rod 410 is connected to the vibration source 420, and the vibration of the sample rod 410 is caused by the vibration source 420, thereby driving the measured object 600 fixed on the sample rod 410 to vibrate; the sample rod 410 is configured to carry the measured object 600 at a preset position. The form of the measured object 600, for example, a sample carrier 430 can be set on the sample rod 410, and the measured object 600 can be fixed on the sample carrier 430, or the measured object 600 and the sample rod 410 can be directly fixed. The preset position refers to the placement position of the measured object 600 selected by the user, which can generally be selected according to the requirements of the detection and the actual situation of the equipment. Accordingly, the vibration sample rod assembly 400 can include a displacement table 430, and the vibration source 420 and the sample rod 410 can be realized through the displacement table 430. 0 is connected to the external bracket to adjust the positions of the sample rod 410 and the object to be measured 600; the excitation component 100 is configured to generate a magnetic field at least at the preset position. Specifically, the object to be measured 600 is in vibration, but the vibration usually makes the object to be measured 600 vibrate within a smaller range. Therefore, the magnetic field generated by the excitation component 100 at the preset position can make the object to be measured 600 in the magnetic field generated by the excitation component 100 when it is in a vibrating state, so as to meet the corresponding test requirements. For example, the excitation component 100 includes an excitation coil 110 and a pole head 120. The pole head 120 is arranged in the magnetic circuit of the excitation coil 110. The two pole heads 120 face each other, and the preset area can be located in the facing area. For the fixing method of the excitation coil 110 and the pole head 120, the pole head 120 and the coil 110 can be fixed to the corresponding bracket 720 by a fixing member 130. For the specific fixing method, those skilled in the art can make corresponding designs according to actual needs. It is not the focus of the innovation of the present invention and will not be repeated here. The sensing component 500 is disposed close to the preset position and is used to sense the object to be measured 600 .

[0023] The temperature-changing component includes a sleeve 210, an air supply pipe 220, and a heater 230. One end of the sleeve 210 is open, and the other end is connected to the air supply pipe 220. The air supply pipe 220 can ventilate into the sleeve 210 and discharge it through the open end of the sleeve 210. The open end of the sleeve 210 is configured to allow the preset position of the sample rod 410 to extend therein. The heater 230 is disposed on the inner side of the sleeve 210 and a gap is provided between the open end of the sleeve 210, so that the object to be measured 600 carried by the sample rod 410 can be switched between the inner and outer positions of the sleeve 210. The air supply pipe 220 is connected to a gas source. The gas provided by the gas source can be a gas of low temperature, high temperature or other temperature. Figure 3 , Figure 4 A form of an air supply pipe 220 is shown, and one end of the air supply pipe 220 connected to the air source is generally arranged horizontally, so as to be connected to an external air source, and to facilitate the setting of corresponding connection mechanisms and pipelines; the side of the air supply pipe 220 connected to the sleeve 210 is generally in the same direction as the sleeve 210, so as to facilitate the connection with the sleeve 210. The specific shape of the air supply pipe 220 can be adjusted according to needs and based on the concept of the present invention, and will not be repeated here.

[0024] The temperature change component 200 is installed on the moving component 300 , and the moving component 300 is configured to drive the temperature change component 200 to switch between the object 600 being located inside the sleeve 210 and the object 600 being located outside the sleeve 210 .

[0025] When the object 600 to be tested needs to be placed in a low temperature state, the temperature change component 200 can be moved by the moving component 300, and the sleeve 210 can be placed on the object 600 to be tested. In this case, a low-temperature gas, such as low-temperature nitrogen, is introduced into the sleeve 210 through the gas supply pipe 220. The low-temperature gas forms a low-temperature environment inside the sleeve 210, and the object 600 to be tested in the low-temperature environment will also be cooled to a low-temperature state. Please refer to Figure 2 , shows a schematic diagram of a vibrating sample magnetometer in which the object under test 600 is in a low temperature state; when the object under test 600 needs to be in a room temperature state, the temperature change component 200 can be moved by the moving component 300, and the sleeve 210 is moved away from the object under test 600, and the air supply pipe 220 does not supply air into the sleeve 210. At this time, the object under test 600 is in a room temperature environment, and accordingly, the temperature of the object under test 600 will gradually reach near the room temperature, please refer to Figure 1, shows a schematic diagram of a vibrating sample magnetometer in which the object to be measured 600 is at room temperature; when the object to be measured 600 needs to be in a high temperature state, the temperature change component 200 can be moved by the moving component 300, and the sleeve 210 is sleeved on the object to be measured 600. In this case, gas is introduced into the sleeve 210 through the gas supply pipe 220, and the heater 230 is turned on so that the heater 230 heats the gas in the sleeve 210. The heated gas flows through the heater 230 and reaches the vicinity of the object to be measured 600. The gas forms a high temperature environment at the position of the object to be measured 600 inside the sleeve 210, and the object to be measured 600 in this high temperature environment will also reach a high temperature state. Please refer to Figure 2 , shows a schematic diagram of a vibrating sample magnetometer in which the object to be measured 600 is in a high temperature state. When the object to be measured 600 is in a low temperature state, a high temperature state or a room temperature state, or when the temperature of the object to be measured 600 is in a changing process, the dipole field of the object to be measured 600 magnetized by the excitation component 100 is detected by the induction component 500, thereby realizing the detection of the magnetism of the object to be measured 600.

[0026] By using the present invention, the temperature environment of the object 600 can be switched without any adjustment to the installation and fixation of the object 600, which greatly reduces the difficulty of temperature adjustment of the object 600, so that the vibrating sample magnetometer can detect the object 600 at different temperatures, thereby expanding the application scope of the vibrating sample magnetometer; it can meet the detection requirements of the object 600 from extremely low temperature to high temperature, and has a wide range of applications.

[0027] The temperature change assembly 200 further includes a heat preservation sleeve 250, which is sleeved on the outside of the gas supply pipe 220, so as to reduce the cold consumption of the low-temperature gas during the transportation process when the low-temperature gas is transported by the gas supply pipe 220. In some embodiments, fixing members 241 and 243 are further provided to fix the heat preservation sleeve 250.

[0028] See also Figures 1 to 3 As an optional form, the moving component 300 includes a lifting platform 320, and the temperature change component 200 is installed on the lifting side of the lifting platform 320. When the open end of the sleeve 210 is set on the upper side of the sleeve 210, the lifting platform 320 can be lifted and lowered to make the preset area on the sample rod 410 enter or leave the sleeve 210, so that the object 600 to be tested enters or leaves the environment created by the sleeve 210. Figures 1 to 3 The embodiment shows a method in which the axis of the sleeve 210 is arranged along the length direction of the sample rod 410, which is a preferred form. In this case, a lifting platform 320 can be arranged so that the lifting side of the lifting platform 320 moves on the axis of the sleeve 210. In addition, it can be understood that the sleeve 210 can also be arranged in other shapes, which will not be described in detail here. Figure 3In order to install the temperature-changing component 200 on the lifting platform 320, the sleeve 210 can be fixed to the lifting platform 320 by a fixing member 242. Preferably, a plurality of fixing members 242 can be provided, or a fixing member 242 having a certain length in the length direction of the sleeve 210 can be used to fix the sleeve 210. In some cases, the movement of the sleeve 210 can be separated from the movement of other components in the temperature-changing component 200. For example, while ensuring a certain airtightness, the sleeve 210 can slide relative to at least one of the heater 230 and the air supply pipe 220. Please refer to Figure 3 , Figure 4 , shows a form in which a temperature-changing component 200 is installed as a whole on a lifting platform 320, wherein a sleeve 210 is fixed to the lifting platform 320, and one closed end of the sleeve 210 is closed by a sleeve 214, and the sleeve 214 is connected to the gas supply pipe 220. At the same time, the sleeve 214 is used to support the heater 230 inside the sleeve 210. In one embodiment, the sleeve 214 is fixedly connected to the gas guide 260, and the gas guide 260 is connected to the heater 230 through a connecting rod 231, and the gas supply pipe 220 is fixed to the lifting platform 320 through a heat preservation sleeve 250 and corresponding fixings 241 and 243. In this way, the temperature-changing component 200 can move with the lifting platform 320 as a whole.

[0029] See also Figure 1 , Figure 2 The moving assembly 300 may further include a horizontal displacement stage 310 to enable the temperature change assembly 200 to move in a horizontal direction, so as to adjust the relative position of the temperature change assembly 200 and the vibrating sample rod assembly 400 .

[0030] Figures 1 to 3 An embodiment of a moving assembly 300 is shown, wherein a horizontal displacement stage 310 includes a horizontal slide 311 and a slide rail 312 disposed on a lower bracket 730 of a vibrating sample magnetometer, and the horizontal slide 311 slides on the slide rail 312 to achieve horizontal displacement. A lifting platform 320 includes a lifting slide 321 and a slide rail 322 disposed on the horizontal slide 311, and the lifting slide 321 slides on the slide rail 322 to achieve lifting displacement. The temperature change assembly 200 is disposed on the lifting slide 321, thereby achieving horizontal movement and lifting movement of the temperature change assembly 200.

[0031] See also Figure 1 , Figure 2 The axis of the open end of the sleeve 210 is parallel to the length direction of the sample rod 410, so that the flow direction of the gas in the sleeve 210 is roughly similar to the vibration direction of the object 600 to reduce the interference of the gas flow on the vibration of the object 600.

[0032] See also Figure 4 , Figure 5 A gap is provided between the heater 230 and the inner wall of the sleeve 210, so that the gas provided by the gas supply pipe 220 can flow through the gap to the outside of the sleeve 210, so that the heater 230 can effectively heat the gas. As a preferred embodiment, the gap between the heater 230 and the inner wall of the sleeve 210 is substantially uniform, so that the gas can flow through the heater 230 evenly, so that the temperature of the heated gas 230 is more uniform and the gas flow is more stable. Please refer to Figure 4 , Figure 5 When the inner wall of the sleeve 210 is columnar, the outer periphery of the heater 230 can also be set to be columnar, and the gaps between the corresponding positions of the outer wall of the heater 230 and the inner wall of the sleeve 210 are roughly the same, and the outer wall of the heater 230 has a certain length to achieve a better heating effect and better airflow.

[0033] See also Figure 4 , Figure 5 The casing 210 includes an outer tube 211 and an inner tube 212, the outer tube 211 and the inner tube 212 are arranged at intervals, the outer tube 211 is sleeved on the outer side of the inner tube 212, and by arranging double-layer tubes and arranging intervals, the heat exchange between the inner side and the outer side of the casing 210 is reduced, the cold / heat consumption of the environment inside the casing 210 is reduced, and the temperature range that can be achieved inside the casing 210 is increased. In addition, the casing 210 can also further include an insulating layer 213, the insulating layer 213 is arranged between the outer tube 211 and the inner tube 212, and when the insulating layer 213 is provided, the insulating layer 213 can also be arranged at intervals with at least one of the outer tube 211 and the inner tube 212 to further reduce the heat exchange between the inner side and the outer side of the casing 210.

[0034] See also Figure 4 , Figure 5 The sleeve 210 further includes a gas guide 260, which is disposed at one end of the inner side of the sleeve 210 near the gas supply pipe 220, so that the gas provided by the gas supply pipe 220 can enter the inner space of the sleeve 210 after passing through the gas guide 260. The gas guide 260 is provided with an opening 261, so as to adjust the flow rate and flow direction of the gas provided by the gas supply pipe 220 entering the inner side of the sleeve 210 and passing through the heater 230. Figure 5 , shows a better embodiment, wherein the openings 261 are evenly distributed along the inner circumference of the sleeve 210, so that the gas flows more evenly in the sleeve 210. In addition, the number and direction of the openings 261 of the gas guide 260 can be adjusted as needed to adjust the flow direction, flow rate and other characteristics of the gas provided by the gas supply pipe 220.

[0035] In addition, in order to avoid interference with the detection of the object being tested, the open end of the temperature variable component 200 is made of non-magnetic material.

[0036] The present invention also provides a temperature regulating device, including a temperature changing component 200 and a moving component 300. The temperature changing component 200 includes a sleeve 210, an air supply pipe 220, and a heater 230. One end of the sleeve 210 is open and the other end is connected to the air supply pipe 220. The open end of the sleeve 210 is made of non-magnetic material. The open end of the sleeve 210 is constructed in a form that allows a measured object 600 to be inserted. The heater 230 is arranged on the inner side of the sleeve 210 and a gap is provided between the open end of the sleeve 210. The air supply pipe 220 is connected to an air source. The temperature changing component 200 is connected to the moving component 300, and the moving component 300 is constructed in a form that can at least drive the sleeve 210 to move.

[0037] For other specific structures and preferred implementations of the temperature adjustment device, please refer to the above content, which will not be repeated here. The temperature adjustment device can be easily combined with the existing vibrating sample magnetometer equipment, with low implementation and modification costs, and can effectively adjust the temperature of the object 600 to achieve magnetic detection of the object 600 under high and low temperature conditions.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention, so the above is only an embodiment of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention also includes various equivalent changes and improvements, which will fall within the scope of the present invention to be protected.

Claims

1. A high and low temperature vibrating sample magnetometer, characterized in that: The invention comprises an excitation component, a temperature change component, a moving component, a vibrating sample rod component and a sensing component. The vibrating sample rod component comprises a sample rod and a vibration source. The sample rod is connected to the vibration source. The sample rod is configured to carry a measured object at a preset position. The excitation component is configured to generate a magnetic field at least at the preset position. The sensing component is arranged close to the preset position. The temperature-changing component includes a sleeve, an air supply pipe, and a heater. One end of the sleeve is open, and the other end is connected to the air supply pipe. The open end of the sleeve is configured to allow the sample rod to extend into the preset position. The open end of the sleeve is made of non-magnetic material. The heater is disposed inside the sleeve and is spaced apart from the open end of the sleeve. The air supply pipe is connected to an air source. The temperature-changing component is installed on the moving component, and the moving component is configured to drive the temperature-changing component to switch between the object to be measured being inside the casing and the object to be measured being outside the casing.

2. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The moving component comprises a lifting platform, and the temperature changing component is installed on the lifting side of the lifting platform.

3. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The axis of the open end of the sleeve is parallel to the length direction of the sample rod.

4. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: A gap is arranged between the heater and the inner wall of the sleeve.

5. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The sleeve comprises an outer tube and an inner tube, the outer tube and the inner tube are arranged at intervals, and the outer tube is sleeved on the outer side of the inner tube.

6. A high and low temperature vibrating sample magnetometer as claimed in claim 5, characterized in that: The sleeve also includes a heat insulating layer, and the heat insulating layer is arranged between the outer tube and the inner tube.

7. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The sleeve also includes a gas guide, which is arranged at one end of the inner side of the sleeve close to the gas supply pipe, and the gas guide is provided with an opening.

8. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The moving component includes a horizontal displacement platform, and the horizontal displacement platform is configured to drive the temperature change component to move horizontally.

9. A high and low temperature vibrating sample magnetometer as claimed in claim 1, characterized in that: The temperature change component also includes a heat preservation sleeve, and the heat preservation sleeve is sleeved on the outer side of the air supply pipe.

10. A temperature regulating device, characterized in that: It includes a temperature-changing component and a moving component. The temperature-changing component includes a sleeve, an air supply pipe, and a heater. One end of the sleeve is open and the other end is connected to the air supply pipe. The open end of the sleeve is made of non-magnetic material. The open end of the sleeve is configured to allow the object to be measured to extend into the sleeve. The heater is arranged inside the sleeve and a gap is arranged between the open end of the sleeve. The air supply pipe is connected to an air source. The temperature-changing component is connected to the moving component, and the moving component is configured to at least be able to drive the sleeve to move.

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