CN216449047U - Testing device - Google Patents
Testing device Download PDFInfo
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- CN216449047U CN216449047U CN202220782321.1U CN202220782321U CN216449047U CN 216449047 U CN216449047 U CN 216449047U CN 202220782321 U CN202220782321 U CN 202220782321U CN 216449047 U CN216449047 U CN 216449047U
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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Abstract
The utility model provides a testing device. Belonging to the technical field of cavity testing. The testing device comprises an assembly body, a hollow pressure transmission medium block, a first conductor, a second conductor and a temperature measuring component; the first conductor and the second conductor are arranged on the inner side of the hollow pressure transmission medium block at intervals; the assembly is arranged between the first conductor and the second conductor; the assembly body comprises a first conductive part, a second conductive part, a heat preservation assembly and a heating body; the first conductive part and the second conductive part are respectively arranged at two ends of the heating body, and the heat insulation assembly is sleeved on the heating body; the temperature measuring component comprises a temperature measuring element and a connecting pipe wrapped on the temperature measuring element, and the connecting pipe penetrates through the assembly body. The contact area between the conducting plate and the conducting post is increased, so that the contact resistance at the interface is reduced, the heat generated by the conducting plate and the conducting plate at the contact position is reduced, the burning-through phenomenon of the conducting plate under the condition of more than 600A current is avoided, and the upper limit of the temperature of the device is improved.
Description
Technical Field
The utility model relates to the technical field of cavity testing, in particular to a testing device.
Background
Under the condition of a certain sample volume and extreme high pressure and high temperature, the high-pressure cavity is heated to the high temperature of more than 4000K, which is very important for researching refractory compounds and the growth of single crystals under high pressure.
However, for most large cavity press arrangements, the heating capacity is typically no more than 2600K, primarily because of the challenges involved in designing a cavity with a heating circuit sufficient to withstand large currents and an insulating layer effective to improve thermal efficiency.
Because the cavity needs to provide ultrahigh current (hundreds of amperes) in the heating process, and certain contact resistance exists among all parts participating in the electric conduction in the heating circuit, a large amount of heat can be generated under the action of high current, so that the upper temperature limit cannot be increased due to the fact that the contact position is burnt through. Meanwhile, the selection of the heat insulation material in the cavity can influence the upper temperature limit of the cavity to a certain extent, for example, the pyrophyllite which is most widely used at present often has phase change at high temperature, even has melting phenomenon at extremely high temperature, and the temperature upper limit of the cavity is influenced by the factors.
Therefore, for a cubic press device with a large cavity, how to expand the upper temperature limit of the sample cavity based on the centimeter magnitude is worth researching.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a testing apparatus to overcome the deficiencies in the prior art.
The utility model provides the following technical scheme: a testing device comprises an assembly body, a hollow pressure transmission medium block, a first conductor, a second conductor and a temperature measuring component;
the first conductor and the second conductor are arranged on the inner side of the hollow pressure transmission medium block at intervals;
the assembly is disposed between the first conductor and the second conductor;
the assembly body comprises a first conductive part, a second conductive part, a heat insulation assembly and a heating body;
the first conductive part and the second conductive part are respectively arranged at two ends of the heating body, and the heat insulation assembly is sleeved on the heating body;
the temperature measuring component comprises a temperature measuring element and a connecting pipe wrapped on the temperature measuring element, the connecting pipe penetrates through the assembly body, and two ends of the connecting pipe are respectively inserted into the hollow pressure transmitting medium blocks;
two ends of the temperature measuring element are respectively arranged in the hollow pressure transmitting medium block.
In some embodiments of the present invention, the first conductive portion comprises a first conductive pillar, a first support sheet, and a first conductive sheet;
one end of the first conductive column is connected with the heating body, the other end of the first conductive column is connected with the first supporting sheet, and the first conductive sheet is stacked on one side, away from the first conductive column, of the first supporting sheet.
Further, the second conductive part comprises a second conductive column, a second supporting sheet and a second conductive sheet;
one end of the second conductive column is connected with the heating body, the other end of the second conductive column is connected with the second supporting sheet, and the second conductive sheet is stacked on one side, far away from the second conductive column, of the second supporting sheet.
Further, the heat insulation assembly comprises a heat insulation pipe, a first gasket and a second gasket, wherein the first gasket and the second gasket are respectively arranged at two ends of the heat insulation pipe;
the heat-insulating pipe is sleeved on the heating body, and the first gasket is sleeved on the first conductive column and the first supporting sheet;
the second gasket is sleeved on the second conductive column and the second supporting sheet.
Further, the orthographic projection of the first conducting strip in the axial direction of the first supporting strip completely covers the first supporting strip and the first gasket.
Further, the orthographic projection of the second conducting strip in the axis direction of the second supporting sheet completely covers the second supporting sheet and the second gasket.
Further, the first gasket, the second gasket and the heat preservation pipe are coaxially arranged.
Further, the heating body comprises a hollow cylinder and an inclusion, and the inclusion is filled in the hollow cylinder.
Further, the hollow cylinder is a graphite hollow cylinder.
Further, the connection pipe is located between the first conductive portion and the second conductive portion.
The embodiment of the utility model has the following advantages: through add first backing sheet between first conducting strip and first conductive pillar, add the second backing sheet simultaneously between second conducting strip and second conductive pillar, indirectly increased between first conducting strip and the first conductive pillar, area of contact between second conducting strip and the second conductive pillar, the contact resistance of interface department has significantly reduced, thereby the heat that first conducting strip and second conducting strip produced at the contact site has been reduced, avoid first conducting strip and second conducting strip to appear burning through phenomenon under the circumstances that is greater than 600A electric current, the stability of first conducting strip and second conducting strip has been improved, thereby improve the temperature upper limit of device.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram illustrating a perspective view of a testing apparatus according to some embodiments of the present invention;
FIG. 2 shows a cross-sectional view of section A-A of FIG. 1;
FIG. 3 is a schematic diagram illustrating another perspective of a testing apparatus according to some embodiments of the present invention;
FIG. 4 is a schematic diagram illustrating a perspective view of an assembly in a testing device according to some embodiments of the present invention;
fig. 5 shows a cross-sectional view of portion B-B of fig. 4.
Description of the main element symbols:
100-assembly; 200-hollow pressure-transmitting medium block; 300-a first electrical conductor; 400-a second electrical conductor; 500-temperature measuring component; 110-a first conductive portion; 120-a second conductive portion; 130-a thermal insulation component; 140-a heating body; 510-a temperature measuring element; 520-a connecting tube; 131-a heat preservation pipe; 132-a first gasket; 133-a second gasket; 111-a first conductive post; 112-a first support sheet; 113-a first conductive sheet; 121-a second conductive pillar; 122-a second support sheet; 123-a second conductive sheet; 141-a hollow cylinder; 142-inclusion.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, some embodiments of the present invention provide a testing apparatus, which is mainly applied to the research of high temperature and high pressure of a sample chamber of a centimeter magnitude. The testing device comprises an assembly 100, a hollow pressure-transmitting medium block 200, a first conductor 300, a second conductor 400 and a temperature measuring component 500. Wherein the temperature change of the heating body 140 is monitored by the temperature measuring assembly 500. The first and second conductors 300 and 400 are used to connect to an external power source, and current passes through the assembly 100, and the assembly 100 generates heat by the current.
Wherein the first conductor 300 and the second conductor 400 are disposed at intervals inside the hollow pressure medium block 200. It should be noted that the shape of the hollow pressure medium block 200 may be a hollow cylinder or a hollow polygonal column, and may be specifically set according to actual conditions.
In addition, in some embodiments of the present invention, the hollow pressure medium block 200 is a hollow cubic structure, and the hollow pressure medium block 200 is made of pyrophyllite, that is, the hollow pressure medium block 200 is made of hollow pyrophyllite. The pyrophyllite is one of clay minerals, has fine texture and low hardness, has the storage capacity of 200 ten thousand tons compared with a newly developed pyrophyllite mine, wherein the aluminum content is 30-39 percent, and the content of Fe2O3+ TI2O is less than 0.2 percent, and is suitable for being used as a blank (a mould) for artificially synthesizing diamond, ceramics, refractory materials, glass fiber, carved stone and the like.
Meanwhile, the assembly 100 is disposed between the first conductor 300 and the second conductor 400. The assembly 100 has a conductive structure, and the outer wall of the assembly 100 abuts against the inner wall of the hollow pressure medium block 200.
Specifically, the first conductor 300 and the second conductor 400 respectively contact with two ends of the assembly 100, and the first conductor 300 and the second conductor 400 are respectively connected to an external power source, so that the current of the external power source flows through the assembly 100 through the first conductor 300 and the second conductor 400, and the assembly 100 generates heat under the action of the current.
The assembly 100 includes a first conductive portion 110, a second conductive portion 120, a thermal insulation member 130, and a heating body 140. It can be understood that, the heat dissipation of the heating body 140 during the heating process is reduced by the heat preservation assembly 130, and the heat preservation quality of the heating body 140 is improved.
By disposing the first conductive portion 110 and the second conductive portion 120 at two ends of the heating body 140, respectively, an external power source can flow through the heating body 140 through the first conductive portion 110 and the second conductive portion 120, so that the heating body 140 generates heat under the action of current.
Meanwhile, the heat insulation assembly 130 is sleeved on the heating body 140, and the heat loss of the heating body 140 is reduced through the heat insulation assembly 130, so that the heating efficiency of the heating body 140 is improved.
The heating body 140 has a cylindrical structure made of a material that is resistant to high temperature and has conductive properties.
In some embodiments of the present invention, the temperature measuring assembly 500 includes a temperature measuring element 510 and a connecting tube 520 wrapped around the temperature measuring element 510, wherein the connecting tube 520 is disposed through the assembly 100. It is understood that the connection pipe 520 passes through the assembly 100, and both ends of the connection pipe 520 are respectively located outside the assembly 100. Meanwhile, both ends of the connection pipe 520 are inserted into the hollow pressure-transmitting medium block 200, respectively.
It can be understood that mounting holes are respectively provided at opposite sides of the inner wall of the hollow pressure medium block 200 such that both ends of the connection pipe 520 are respectively provided in the mounting holes.
Meanwhile, two ends of the temperature measuring element 510 are respectively arranged inside the hollow pressure transmitting medium block. Specifically, one end of the temperature sensing element penetrates one side of the hollow pressure transmitting medium block 200 and is attached to the outer wall of one side of the hollow pressure transmitting medium block 200, the other end of the temperature sensing element penetrates the other side of the hollow pressure transmitting medium block 200 and is attached to the outer wall of the other side of the hollow pressure transmitting medium block 200, the two ends of the temperature sensing element are connected with the multichannel recorder through the hammer heads, and the temperature change of the temperature sensing element 510 is recorded, so that the temperature calibration of the heating body 140 is realized.
It should be noted that in some embodiments of the present invention, the connection pipe 520 is a ceramic pipe, so as to improve the high temperature resistance of the connection pipe 520 and improve the stability of the connection rod under high temperature conditions.
Among them, ceramics have many advantages of excellent insulation, corrosion resistance, high temperature resistance, high hardness, low density, radiation resistance, etc., and with the rise of high and new technology industries, various novel special ceramics have been greatly developed, and ceramics have become excellent structural materials and functional materials. They have higher temperature resistance, mechanical properties, special electrical properties and excellent chemical resistance than conventional ceramics.
The ceramic tube is wrapped around the temperature measuring element 510 to calibrate the temperature of the cavity inside the heating body 140.
In some embodiments of the present invention, the temperature sensing element 510 is a thermocouple.
A thermocouple (thermocouple) is a temperature measuring element 510 commonly used in a temperature measuring instrument, and directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (secondary instrument).
As shown in fig. 2, 4 and 5, in some embodiments of the present invention, the heating body 140 includes a hollow cylinder 141 and an inclusion 142, and the inclusion 142 fills the inside of the hollow cylinder 141 and surrounds the sample by the inclusion 142.
It is noted that in some embodiments of the present invention, inclusions 142 are hexagonal boron nitride. The hexagonal boron nitride is white crystal, the melting point is close to 3000 ℃, the hexagonal boron nitride is high temperature resistant, the chemical property is extremely stable, the hexagonal boron nitride is resistant to strong acid corrosion, and the hexagonal boron nitride has very high electrical insulation property.
In addition, the inclusion 142 is wrapped with the sample, and the sample is prevented from being contaminated by the heating body 140 by the inclusion 142, so that the stability of the sample in the inclusion 142 is improved.
In some embodiments of the present invention, the hollow cylinder 141 is a graphite hollow cylinder 141 made of graphite. It should be noted that the conductivity of graphite is one hundred times higher than that of general non-metallic ore. The thermal conductivity exceeds that of metal materials such as steel, iron, lead and the like. The melting point of graphite is 3850 +/-50 ℃, and even if the graphite is burnt by an ultrahigh-temperature electric arc, the weight loss is small and the thermal expansion coefficient is small. The strength of graphite is enhanced with the increase of temperature, and at 2000 ℃, the strength of graphite is doubled.
As shown in fig. 4 and 5, in some embodiments of the present invention, the first conductive portion 110 includes a first conductive pillar 111, a first support sheet 112, and a first conductive sheet 113.
One end of the first conductive pillar 111 is connected to the heater 140, and the first conductive pillar 111 and the heater 140 may be connected by adhesion or integral molding.
The other end of the first conductive pillar 111 is connected to the first supporting sheet 112, or may be connected to the first supporting sheet by bonding or integral molding. It should be noted that the axis of the first support sheet 112 is coaxial with the first conductive pillar 111, the diameter of the first support sheet 112 is larger than the diameter of the first conductive pillar 111, and the diameter of the first support sheet 112 is smaller than the diameter of the heating body 140.
In addition, the first conductive sheet 113 is laminated on a side of the first support sheet 112 away from the first conductive post 111. Note that the axis of the first conductive sheet 113 coincides with the axis of the first conductive pillar 111, and the diameter of the first conductive sheet 113 is larger than the diameter of the heater 140. It is understood that the orthographic projection of the first conductive sheet 113 in the axial direction of the heating body 140 entirely covers the heating body 140.
Specifically, first supporting sheet 112 is the graphite flake, through setting up first supporting sheet 112 between first conductive cylinder 111 and first conducting strip 113 to reduce the contact resistance between first conductive cylinder 111 and the first conducting strip 113, and then reduce the heat production of first conductive cylinder 111 and first conducting strip 113 at the contact position, thereby prevent that the phenomenon of burning through appears in first conducting strip 113 under the condition of the electric current that is greater than 600A, improve first conducting strip 113's stability.
By additionally arranging the first support sheet 112 made of graphite between the first conductive column 111 and the first conductive sheet 113, not only is the contact area between the first conductive sheet 113 and the first support sheet 112 increased, but also the contact resistance at the contact interface between the first conductive sheet 113 and the first support sheet 112 is greatly reduced, so that the heat generated at the contact position between the first conductive column 111 and the first conductive sheet 113 is eliminated, and the stability of the first conductive sheet 113 in the electrifying process is improved.
As shown in fig. 2 and 5, in some embodiments of the present invention, the second conductive part 120 includes a second conductive pillar 121, a second supporting sheet 122, and a second conductive sheet 123.
One end of the second conductive pillar 121 is connected to the heater 140, and the second conductive pillar 121 and the heater 140 may be connected by adhesion or integral molding.
The other end of the second conductive pillar 121 is connected to the second supporting sheet 122, and may also be connected by bonding or integral molding. It should be noted that the axis of the second supporting sheet 122 is coaxial with the second conductive pillar 121, the diameter of the second supporting sheet 122 is larger than the diameter of the second conductive pillar 121, and the diameter of the second supporting sheet 122 is smaller than the diameter of the heating body 140.
In addition, the second conductive sheet 123 is stacked on a side of the second support sheet 122 away from the second conductive post 121. It should be noted that the axis of the second conductive sheet 123 coincides with the axis of the second conductive pillar 121, and the diameter of the second conductive sheet 123 is larger than that of the heating body 140. It is understood that the orthographic projection of the second conductive sheet 123 in the axial direction of the heating body 140 entirely covers the heating body 140.
It should be noted that, in some embodiments of the present invention, the heating body 140 has a cylindrical structure, and the axis of the first conductive pillar 111, the axis of the heating body 140, and the axis of the second conductive pillar 121 coincide.
In addition, the diameter of the first conductive pillar 111 and the diameter of the second conductive pillar 121 are equal, and the diameter of the first conductive pillar 111 is smaller than the diameter of the heater 140.
Specifically, the second supporting sheet 122 is a graphite sheet, and the second supporting sheet 122 is disposed between the second conductive pillar 121 and the second conductive sheet 123, so as to reduce the contact resistance between the second conductive pillar 121 and the second conductive sheet 123, and further reduce the heat generation amount of the second conductive pillar 121 and the second conductive sheet 123 at the contact position, thereby preventing the second conductive sheet 123 from being burned through under the condition of the current greater than 600A, and improving the stability of the second conductive sheet 123.
By additionally arranging the second supporting sheet 122 made of graphite between the second conductive post 121 and the second conductive sheet 123, not only is the contact area between the second conductive sheet 123 and the second supporting sheet 122 increased, but also the contact resistance at the contact interface between the second conductive sheet 123 and the second supporting sheet 122 is greatly reduced, so that the heat generated at the contact position between the second conductive post 121 and the second conductive sheet 123 is eliminated, and the stability of the second conductive sheet 123 in the electrifying process is improved.
As shown in fig. 5, in some embodiments of the present invention, the thermal insulation assembly 130 includes a thermal insulation pipe 131, a first gasket 132, and a second gasket 133, and the first gasket 132 and the second gasket 133 are respectively disposed at both ends of the thermal insulation pipe 131.
The outer diameters of the first washer 132 and the second washer 133 are equal to the outer diameter of the insulating tube 131, and the first washer 132 and the second washer 133 are disposed coaxially with the insulating tube 131.
Wherein, the heat preservation pipe 131 is sleeved on the heating body 140. It will be appreciated that the inner wall of the insulating tube 131 is in contact with the outer wall of said heating body 140. Specifically, the length of the heat-insulating tube 131 in the axial direction thereof is not less than the length of the heating body 140 in the axial direction thereof, so that the heat-insulating tube 131 is completely wrapped around the heating body 140, and the heat-insulating quality of the heat-insulating tube 131 to the heating body 140 is improved.
In addition, the first gasket 132 is sleeved on the first conductive post 111 and the first supporting sheet 112 to form a cylindrical structure. It should be noted that the first gasket 132, the first conductive pillar 111, and the first support sheet 112 are coaxially disposed, and a sum of a height of the first conductive pillar 111 and a thickness of the first support sheet 112 is equal to a thickness of the first gasket 132.
The second gasket 133 is sleeved on the second conductive post 121 and the second supporting sheet 122 to form a cylindrical structure. Note that the second gasket 133, the second conductive post 121, and the second support piece 122 are coaxially disposed. The sum of the height of the second conductive pillar 121 and the thickness of the second support sheet 122 is equal to the thickness of the second gasket 133.
Specifically, the heat preservation pipe 131 is a zirconium dioxide pipe. Among them, zirconium dioxide is a main oxide of zirconium, and is generally a white odorless and tasteless crystal, and is hardly soluble in water, hydrochloric acid and dilute sulfuric acid. It is chemically inert and has the properties of high melting point, high resistivity, high refractive index and low coefficient of thermal expansion, making it an important refractory material, ceramic insulation material and ceramic opacifier.
In addition, the first gasket 132 and the second gasket 133 are zirconia gaskets made of zirconia, respectively.
It should be noted that an orthographic projection of the first conductive sheet in the axial direction of the first support sheet completely covers the first support sheet and the first gasket. The orthographic projection of the second conducting strip in the axis direction of the second supporting sheet completely covers the second supporting sheet and the second gasket.
As shown in fig. 2 and 5, in some embodiments of the present invention, a side of the first conductive sheet 113 close to the heating body 140 respectively abuts against the first support sheet 112 and the first gasket 132. The first conductive sheet 113 may be connected to the first supporting sheet 112 by bonding or integral molding.
In addition, one side of the second conductive sheet 123 close to the heating body 140 respectively abuts against the second supporting sheet 122 and the second gasket 133. The second conductive sheet 123 may also be connected to the second supporting sheet 122 by bonding or integral molding.
It should be noted that the first conductive sheet 113 and the second conductive sheet 123 are molybdenum sheets. After the molybdenum sheet is rolled and processed with the deformation of more than 60 percent, the density of the molybdenum sheet is basically close to the theoretical density of molybdenum, so the molybdenum sheet has high strength, uniform internal structure and excellent high-temperature creep resistance, and is widely applied to products such as a reflecting screen and a cover plate in a sapphire crystal growth furnace, a reflecting screen, a heating belt and a connecting piece in a vacuum furnace, a sputtering target material for plasma coating, a high-temperature resistant boat and the like.
In some embodiments of the present invention, the connecting tube 520 is located between the first conductive part 110 and the second conductive part 120. In order to improve the accuracy of the temperature calibration inside the heating body 140, the axis of the connecting tube 520 intersects the axis of the heating body 140, and the axis of the connecting tube 520 is perpendicular to the axis of the heating body 140.
Specifically, the heating body 140 is formed by filling the detection sample in the hollow cylinder 141 through the inclusion 142. And the first conductor 300 and the second conductor 400 are respectively connected with an external power supply, so that external current flows through the heating body 140, the temperature of the heating body 140 is gradually increased under the action of the current, and the heating efficiency of the heating body 140 under the action of the current is greatly improved by wrapping the heat insulation assembly 130 in the circumferential direction of the heating body 140.
The temperature in the cavity of the heating body 140 is calibrated by the temperature measuring element 510, and the sample is wrapped in the hollow cylinder 141 by the wrapping body 142 made of hexagonal boron nitride, so that the sample is prevented from being polluted by the hollow cylinder 141 made of graphite, and the stability of the sample in the wrapping body 142 is improved.
By placing the device in a press, six hammers pressurize six faces of the pyrophyllite assembly block. When the preset pressure is reached, the hammers which are respectively abutted against the first conductor 300 and the second conductor 400 are electrified, the cavity of the heating body 140 is heated, the hammers which are abutted against the two ends of the temperature measuring element 510 are connected with the multi-channel recorder, the temperature of the thermocouple is recorded, the temperature calibration of the cavity of the heating body 140 is realized, and whether the sample is melted or not is judged according to the sudden change of the loop resistance of the press. The device can realize that the upper limit of the temperature of the high-temperature cavity reaches 4000K, which far exceeds 2600K of most similar cavities at present.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A testing device is characterized by comprising an assembly body, a hollow pressure transmission medium block, a first conductor, a second conductor and a temperature measuring component;
the first conductor and the second conductor are arranged on the inner side of the hollow pressure transmission medium block at intervals;
the assembly is disposed between the first conductor and the second conductor;
the assembly body comprises a first conductive part, a second conductive part, a heat insulation assembly and a heating body;
the first conductive part and the second conductive part are respectively arranged at two ends of the heating body, and the heat insulation assembly is sleeved on the heating body;
the temperature measuring component comprises a temperature measuring element and a connecting pipe wrapped on the temperature measuring element, the connecting pipe penetrates through the assembly body, and two ends of the connecting pipe are respectively inserted into the hollow pressure transmitting medium blocks;
two ends of the temperature measuring element are respectively arranged in the hollow pressure transmitting medium block.
2. The testing device of claim 1, wherein the first conductive portion comprises a first conductive post, a first support sheet, and a first conductive sheet;
one end of the first conductive column is connected with the heating body, the other end of the first conductive column is connected with the first supporting sheet, and the first conductive sheet is stacked on one side, away from the first conductive column, of the first supporting sheet.
3. The testing device of claim 2, wherein the second conductive portion comprises a second conductive post, a second support sheet, and a second conductive sheet;
one end of the second conductive column is connected with the heating body, the other end of the second conductive column is connected with the second supporting sheet, and the second conductive sheet is stacked on one side, away from the second conductive column, of the second supporting sheet.
4. The test device of claim 3, wherein the thermal insulation assembly comprises a thermal insulation pipe, a first gasket and a second gasket, wherein the first gasket and the second gasket are respectively arranged at two ends of the thermal insulation pipe;
the heat-insulating pipe is sleeved on the heating body, and the first gasket is sleeved on the first conductive column and the first supporting sheet;
the second gasket is sleeved on the second conductive column and the second supporting sheet.
5. The test device of claim 4, wherein an orthographic projection of the first conductive sheet in the direction of the first support sheet axis completely covers the first support sheet and the first gasket.
6. The testing device of claim 4, wherein an orthographic projection of the second conductive tab in the direction of the axis of the second support tab completely covers the second support tab and the second gasket.
7. The testing device of claim 4, wherein the first gasket, the second gasket, and the insulating tube are coaxially disposed.
8. The test device according to claim 1, wherein the heating body includes a hollow cylinder and an enclosure filled in an interior of the hollow cylinder.
9. The test device of claim 8, wherein the hollow cylinder is a graphite hollow cylinder.
10. The test device of any one of claims 1 to 9, wherein the connection tube is located between the first and second electrically conductive portions.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220782321.1U CN216449047U (en) | 2022-04-07 | 2022-04-07 | Testing device |
| PCT/CN2022/106552 WO2023193366A1 (en) | 2022-04-07 | 2022-07-19 | Testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220782321.1U CN216449047U (en) | 2022-04-07 | 2022-04-07 | Testing device |
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| CN216449047U true CN216449047U (en) | 2022-05-06 |
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| CN202220782321.1U Active CN216449047U (en) | 2022-04-07 | 2022-04-07 | Testing device |
Country Status (2)
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| CN (1) | CN216449047U (en) |
| WO (1) | WO2023193366A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193366A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Testing device |
| WO2023193364A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Crystal preparation apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2210708Y (en) * | 1995-03-10 | 1995-10-25 | 北京晶鑫磊非金属材料有限责任公司 | Super-high pressure and high-temp chamber for synthesizing super-hard material |
| JP2005001934A (en) * | 2003-06-11 | 2005-01-06 | Daiichi Kiden:Kk | Apparatus for pulling and growing sapphire single crystal |
| CN202594788U (en) * | 2012-05-14 | 2012-12-12 | 河南飞孟金刚石工业有限公司 | Heating device for synthesis of superhard material |
| CN202594786U (en) * | 2012-05-14 | 2012-12-12 | 河南飞孟金刚石工业有限公司 | Heating device for synthesizing cubic boron nitride |
| CN205262628U (en) * | 2015-12-24 | 2016-05-25 | 河南四方达超硬材料股份有限公司 | Synthetic intracavity radial temperature measuring device of cubic apparatus press |
| CN106116567B (en) * | 2016-06-22 | 2018-11-02 | 刘和来 | The preparation method of high density nano barium titanate titanate ceramics |
| CN111025055B (en) * | 2019-12-04 | 2021-09-21 | 四川大学 | Assembly part for high-stress and large-deformation environment and application thereof |
| CN216449047U (en) * | 2022-04-07 | 2022-05-06 | 南方科技大学 | Testing device |
-
2022
- 2022-04-07 CN CN202220782321.1U patent/CN216449047U/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193366A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Testing device |
| WO2023193364A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Crystal preparation apparatus |
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| WO2023193366A1 (en) | 2023-10-12 |
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