Volatility characteristic test device and monitoring control system thereof

Abstract

A volatility characteristic test device (100) and a monitoring control system (200) thereof. The test device (100) comprises a test chamber (11), a heating member (20) for heating a sample in the test chamber (11), a heat storage chamber (40), and a heat circulation mechanism. The heat storage cavity (40) and the test chamber (11) are not in communication with each other. After the test is finished, the heat circulation mechanism enables high-temperature gas in the test chamber (11) to enter the heat storage cavity (40) for storage, so that the test chamber (11) is rapidly cooled, and before the next test starts, the high-temperature gas returns to the test chamber (11) by means of the heat circulation mechanism, so as to heat the sample in the test chamber (11) by means the heat of the high-temperature gas. The heating and cooling time of the sample can be shortened, and the energy consumption is reduced.

Description

Volatility characteristics testing device and its monitoring and control system Technical Field

[0001] Embodiments of the present application relate to testing or analyzing materials by measuring the chemical or physical properties of the materials, and more particularly to a device for testing the volatility characteristics of materials and a monitoring and control system thereof. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] Some materials need to serve for a long time under high temperature and vacuum conditions, so it is necessary to provide a material volatility characteristics testing device to verify the volatility characteristics of the material under specific service conditions.

[0004] To simulate high-temperature vacuum testing conditions, a material volatility testing device typically includes a test chamber and a heating element for heating the sample in the test chamber. After the test is completed, the heated sample needs to be removed.

[0005] After the test is completed, the test chamber of the material volatility test device is still in a high temperature state. The test chamber must be cooled before the sample can be opened and removed. Due to the high temperature inside the test chamber and the insulation layer, the test chamber takes a long time to cool down. Summary of the Invention

[0006] A brief overview of the present application is provided below to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify key or important portions of the present application, nor is it intended to limit the scope of the present application. Its purpose is simply to present certain concepts in a simplified form as a prelude to the more detailed description that will be discussed later.

[0007] In a first aspect, embodiments of the present application provide a material volatility characteristics testing device, comprising a test chamber, a heating element for heating a sample within the test chamber, a heat storage chamber, and a thermal cycling mechanism. The heat storage chamber and the test chamber are not interconnected; the thermal cycling mechanism is configured to allow high-temperature gas within the test chamber to enter the heat storage chamber for storage after a test is completed, thereby rapidly cooling the test chamber; and, before the next test begins, allow the high-temperature gas stored in the heat storage chamber to enter the test chamber, thereby utilizing the heat from the high-temperature gas to heat the sample within the test chamber.

[0008] The material volatility characteristics testing device provided in the embodiment of the present application is provided with a heat storage chamber and a thermal circulation mechanism. After the test is completed, the thermal circulation mechanism can be used to send high-temperature gas from the test chamber to the heat storage chamber for storage, which can quickly reduce the temperature in the test chamber, thereby reducing the cooling time of the sample; before the next test begins, the high-temperature gas is sent back to the test chamber from the heat storage chamber through the thermal circulation mechanism, and the heat of the high-temperature gas can be used to heat the sample, which can not only reduce the heating time of the sample, but also reduce energy consumption.

[0009] In a second aspect, embodiments of the present application provide a monitoring and control system for a material volatility characteristics testing device. The material volatility characteristics testing device includes: a test chamber, a heating element for heating the test chamber, a temperature measuring element for measuring the temperature of the test chamber, a vacuum pumping element for evacuating the test chamber, and a vacuum measuring element for measuring the vacuum level of the test chamber. The system includes a programmable controller, which is configured to receive temperature values ​​measured by the temperature measuring element and vacuum values ​​measured by the vacuum measuring element, and control the heating power of the heating element and the vacuum pumping power of the vacuum pumping element based on the temperature and vacuum values.

[0010] The monitoring and control system provided in the embodiment of the present application uses a programmable controller to control the heating power of the heating element and the vacuum power of the vacuum element according to the temperature value and the vacuum value. Since the temperature and the vacuum degree are taken into consideration at the same time, it is beneficial to avoid the simultaneous occurrence of high temperature and low vacuum degree in the test chamber, thereby preventing the sample from being oxidized under low vacuum conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic cross-sectional view of a material volatility characteristics testing device provided in an embodiment of the present application.

[0012] FIG2 is a partial enlarged view of the material volatility characteristic testing device shown in FIG1 .

[0013] FIG3 is a side view schematic diagram of a material volatility characteristics testing device provided in an embodiment of the present application.

[0014] FIG4 is a schematic diagram showing the principle of using the monitoring and control system provided in an embodiment of the present application to monitor and control a device for testing the volatility characteristics of a material.

[0015] FIG5 is a cross-sectional schematic diagram of a material volatility characteristic testing device provided in an embodiment of the present application, showing the relative positions of a test chamber, a sample cooling member, and a sample conveying member.

[0016] FIG6 is a schematic perspective view of a sample transport member provided in an embodiment of the present application.

[0017] FIG. 7 is a schematic perspective view of a sample cooling member provided in an embodiment of the present application.

[0018] FIG8 is a schematic structural diagram of a gas supply member provided in an embodiment of the present application.

[0019] Explanation of Reference Numerals: 100, material volatility characteristics testing device; 113, pressure measuring element; 10, outer shell; 101, end plate; 102, cylinder; 103, opening; 104, cover; 11, test chamber; 111, sample support; 112, insulation layer; 12, first shell; 13, second shell; 20, heating element; 201, temperature measuring element; 202, temperature control element; 203, voltage regulator; 204, voltage measuring element; 205, current measuring element; 30, vacuum measuring element; 40, heat storage chamber; 50, vacuum pumping element; 51, air inlet; 52, air outlet; 501, vacuum pumping control element; 502, valve control element; 61, connecting pipeline; 611, first pipeline; 612, second pipeline; 6121, valve; 613, third pipeline; 6131. ​​Valve; 62. Exhaust pipe; 621. Exhaust valve; 70. Cooling chamber; 81. Spiral pipe; 82. Connecting pipe; 821. Valve; 90. Coolant supply component; 91. Liquid storage tank; 911. Coolant storage chamber; 92. Drive component; 93. Coolant circulation pipeline; 94. Heat dissipation component; 200. Monitoring and control system; 210. Programmable controller; 2101. Button; 220. Internet of Things communication module; 230. Remote acquisition and control module; 240. Touch screen. 300, sample cooling element; 301, lifting assembly; 3011, gas cooling pipeline; 3012, coolant flow chamber; 3013, insulation element; 3014, heating element; 302, sample cooling chamber; 3301, carrier; 3022, first cylinder; 3023, second cylinder; 3021, sealing end cap; 3043, drive pump; 3044, coolant receiving chamber; 3030, air inlet pipeline; 400, gas supply element; 4010, second air inlet pipeline; 4012, second air inlet valve; 4013, pump; 4015, pressure sensor; 4020, first air inlet pipeline; 4022, first air inlet valve; 4023, pressure reducing valve; 4030, air outlet pipeline; 4032, air outlet valve; 700, sample transport part; 7021, clamping claw; 7022, clamping matching part; 70211, clamping matching groove; 7023, compression spring; 7024, connecting rod; 703, sealing shell; 704, pipe fitting; 705, rod; 706, sealing flange; 707, first operating ring; 708, second operating ring; 7091, first magnetic part; 7092, first matching magnetic part; 7093, second magnetic part; 7094, second matching magnetic part; 7095, first locking part; 7096, second locking part; 810, cooling and collecting part; 811, cooling part; 812, collecting part; 820, measuring part; 830, measuring cooling part; 840, measuring moving part. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. For the sake of clarity and conciseness, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary depending on the implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is a routine task for those skilled in the art who benefit from the content of this application.

[0021] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, the accompanying drawings only show the device structure and / or processing steps that are closely related to the solution according to the present application, while other details that are not closely related to the present application are omitted.

[0022] As previously mentioned, due to the high temperature inside the test chamber and the insulation it typically contains, it takes a long time for the chamber to cool down. Furthermore, when the specimen is heated before the test begins, it also takes a long time to heat the chamber, making each test take longer overall.

[0023] To address the above-mentioned issues, an embodiment of the present application provides a material volatility characteristics testing device, as shown in FIG1 , which shows a cross-sectional schematic diagram of the material volatility characteristics testing device of an embodiment of the present application. The material volatility characteristics testing device 100 may include a test chamber 11, a heating element 20 for heating a sample (not shown) in the test chamber 11, a heat storage chamber 40, and a thermal cycling mechanism. The heat storage chamber 40 is not connected to the test chamber 11; the thermal cycling mechanism is used to allow the high-temperature gas in the test chamber 11 to enter the heat storage chamber 40 for storage after the test is completed, so as to quickly cool the test chamber 11; and before the next test begins, allow the high-temperature gas stored in the heat storage chamber 40 to enter the test chamber 11, so as to use the heat of the high-temperature gas to heat the sample in the test chamber 11.

[0024] The material volatility characteristics testing device 100 provided in the embodiment of the present application is provided with a heat storage chamber 40 and a thermal circulation mechanism. After the test is completed, the high-temperature gas can be sent from the test chamber 11 to the heat storage chamber 40 for storage through the thermal circulation mechanism, thereby reducing the temperature of the test chamber 11, thereby reducing the cooling time of the sample and improving the cooling efficiency of the sample; the material volatility characteristics testing device 100 can also send the high-temperature gas from the heat storage chamber 40 back to the test chamber 11 through the thermal circulation mechanism before the next test begins, thereby utilizing the heat of the high-temperature gas to heat the sample, thereby reducing the heating time of the sample and reducing energy consumption.

[0025] In some embodiments, the material volatility characteristics testing apparatus 100 may include a sample support 111 disposed within the test chamber 11 for placing the sample. The sample support 111 may be made of a high-temperature resistant material to withstand the high temperature environment within the test chamber 11. In some embodiments, the high-temperature resistant material used to manufacture the sample support 111 may be molybdenum metal.

[0026] In some embodiments, the heating element 20 may include multiple strip-shaped electrical heating elements spaced apart along the axial direction of the test chamber 11. The heating element 20 may be made of a high-temperature resistant material to withstand the high temperature environment within the test chamber 11. In some embodiments, the high-temperature resistant material used to manufacture the heating element 20 may be molybdenum metal. Molybdenum metal not only withstands high temperatures but also has advantages such as uniform resistance, stable heat generation, and long service life.

[0027] Referring to FIG. 1 , in some embodiments, the thermal cycling mechanism may include a connecting pipe 61 and a vacuum pump 50 . The connecting pipe 61 may be used to controllably connect the heat storage chamber 40 and the test chamber 11 . The vacuum pump 50 may be disposed on the connecting pipe 61 and used to pump high-temperature gas from the test chamber 11 into the heat storage chamber 40 , or vice versa. The vacuum pump 50 may be a vacuum pump.

[0028] The material volatility testing device 100 of the embodiment of the present application can be used to perform material volatility testing, which needs to be performed in a high-temperature vacuum environment. The heat storage chamber 40 and / or the test chamber 11 can be vacuumed using the vacuum pump 50 .

[0029] 1 and 2 , in some embodiments, the connecting pipeline 61 may include two first pipelines 611, two second pipelines 612, and two third pipelines 613. The vacuum pump 50 may be disposed between the two first pipelines 611. One end of each second pipeline 612 may be connected to one of the first pipelines 611 via a valve 6121, and the other end of each second pipeline 612 may be in communication with the test chamber 11. One end of each third pipeline 613 may be connected to a first pipeline 611 via a valve 6131, and the other end of each third pipeline 613 may be in communication with the heat storage chamber 40.

[0030] In some embodiments, the vacuum member 50 may be provided with an air inlet 51 and an air outlet 52, such that gas can enter the vacuum member 50 through the air inlet 51 and exit the vacuum member 50 through the air outlet 52. Two first pipes 611 may be respectively connected to the air inlet 51 and the air outlet 52 of the vacuum member 50. With this arrangement, the vacuum member 50 can be used to deliver gas from the test chamber 11 to the heat storage chamber 40, or vice versa.

[0031] In some embodiments, a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air inlet 51 or the air outlet 52, that is, a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air inlet 51, or a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air outlet 52.

[0032] 1 and 2 , in some embodiments, the thermal cycle mechanism may further include an exhaust line 62 , which may controllably connect the external environment to the connecting line 61 to discharge the gas extracted by the vacuum member 50 to the external environment.

[0033] In some embodiments, one end of the exhaust line 62 may be connected to the first line 611 , and the other end of the exhaust line 62 may be connected to the external environment; an exhaust valve 821 may also be provided on the exhaust line 62 to achieve controlled conduction of the exhaust line 62 .

[0034] The exhaust pipe 62 may be connected to the first pipe 611 at one side of the air outlet 52 of the vacuum pumping member 50 , so that the vacuum pumping member 50 can be used to evacuate the test chamber 11 or the heat storage chamber 40 .

[0035] In some embodiments, the material volatility characteristic testing device 100 may include an outer shell 10 , in which a testing chamber 11 and a heat storage chamber 40 are formed.

[0036] In some embodiments, the material volatility characteristics testing device 100 may also include: a first shell 12 and a second shell 13 arranged in the outer shell 10, the first shell 12 is arranged on the radial inner side of the second shell 13, the first shell 12 is arranged to form a test chamber 11, and a heat storage chamber 40 is formed between the first shell 12 and the second shell 13.

[0037] 1 and 3 , the outer shell 10 has openings 103 formed at both axial ends thereof, communicating with the test chamber 11 for placing and removing samples. The outer shell 10 also includes two covers 104 for opening and closing the openings 103. As will be readily understood, with this arrangement, when the covers 104 are opened, the heat storage chamber 40 remains sealed.

[0038] In some embodiments, the outer shell 10 includes a cylinder 102 and end plates 101 provided at both ends of the cylinder. An opening 103 is formed on the end plate 101 and a cover 104 is provided.

[0039] 1 , in some embodiments, the material volatility characteristic testing device 100 may further include a cooling chamber 70 . The cooling chamber 70 contains a coolant for reducing the temperature of the outer shell 10 .

[0040] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include a coolant supply 90 , which may be used to provide coolant to the cooling chamber 70 .

[0041] In some embodiments, the coolant supply member 90 may include a liquid storage tank 91 and a driving member 92. The liquid storage tank 91 defines a coolant storage chamber 911 for supplying coolant. The driving member 92 may be configured to drive the coolant to circulate within the coolant storage chamber 911 and the cooling chamber 70. The driving member 92 may be a flow agitator comprising a motor and an impeller.

[0042] In some embodiments, the coolant supply member 90 may further include two coolant circulation lines 93, through which the coolant can circulate in the coolant storage chamber 911 and the cooling chamber 70. In some embodiments, the driving member 92 may be connected to one of the coolant circulation lines 93.

[0043] In some embodiments, the liquid tank 91 can be disposed below the outer shell 10. In some embodiments, the coolant supply member 90 can further include a plurality of heat sinks 94, which can be disposed on the sidewalls of the liquid tank 91 to cool the liquid tank 91. In some embodiments, the heat sinks 94 can be heat fins.

[0044] In some embodiments, the material volatility characteristics testing device 100 may further include a cooling pipeline disposed in the cooling cavity 70. The cooling pipeline may be in controlled communication with the test chamber 11, so that external air can enter the test chamber 11 through the cooling pipeline to cool the test chamber 11.

[0045] In some embodiments, the cooling cavity 70 may be an annular cavity formed radially outside the test chamber 11 , and the cooling pipeline may extend spirally in the annular cavity.

[0046] In some embodiments, the cooling cavity 70 is formed between the barrel 102 and the peripheral wall of the second shell 13 .

[0047] In some embodiments, the test chamber 11 is a cylindrical chamber with an axis extending horizontally; the heat storage chamber 40 is an annular chamber disposed radially outward from the test chamber 11. The cooling chamber 70 is an annular chamber formed radially outward from the heat storage chamber 40. Some of the high-temperature gas within the test chamber 11 can enter the cooling pipeline to heat the cooling chamber 70, raising the temperature of the cooling chamber 70 and preventing the high-temperature gas stored in the heat storage chamber 40 from rapidly decreasing in temperature.

[0048] The heat storage chamber 40 coincides with the axis of the testing chamber 11 .

[0049] In some embodiments, the cooling circuit may include a spiral tube 81 and a connecting tube 82. The spiral tube 81 may extend spirally within the cooling chamber 70. One end of the spiral tube 81 may penetrate the cooling chamber 70 and extend to the exterior of the outer shell 10. The other end of the spiral tube 81 may be connected to the connecting tube 82, and the other end of the connecting tube 82 may be connected to the first tube 611. The connecting tube 82 may be provided with a valve 821. Specifically, to enable the vacuum pump 50 to draw high-temperature gas from the test chamber 11 to the spiral tube 81, the connecting tube 82 may be connected to the first tube 611 on the gas outlet 52 side of the vacuum pump 50.

[0050] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include an insulation layer 112. The insulation layer 112 may be disposed on the peripheral wall of the test chamber 11 (i.e., the first housing 12) to insulate the test chamber 11. In some embodiments, the insulation layer 112 may be disposed on the inner side of the peripheral wall of the test chamber 11 or on the outer side of the peripheral wall of the test chamber 11.

[0051] In some embodiments, the heating element 20 is disposed in the test chamber 11. In some embodiments, the heating element 20 can be disposed inside the thermal insulation layer 112. In some embodiments, the heat storage chamber 40 can be disposed radially outside the test chamber 11.

[0052] In some embodiments, the insulation layer 112 may be made of a high-temperature resistant material to withstand the high-temperature environment in the test chamber 11 . The high-temperature resistant material used to manufacture the insulation layer 112 may be a molybdenum metal material.

[0053] In some embodiments, the first pipeline 611 may pass through the heat storage chamber 40 and the cooling chamber 70 and may extend to the outside of the outer shell 10 ; the vacuum element 50 is connected to the first pipeline 611 outside the outer shell 10 .

[0054] In some embodiments, the second pipe 612 may penetrate the thermal insulation layer 112 and communicate with the test chamber 11. In some embodiments, the third pipe 613 may be located in the heat storage chamber 40.

[0055] In some embodiments, the material volatility characteristic testing device 100 may further include a vacuum degree measuring component 30 . The vacuum degree measuring component 30 may penetrate the cooling cavity 70 and enter the heat storage cavity 40 to detect the vacuum degree of the heat storage cavity 40 .

[0056] 1 to 3 , the process of conducting a material volatility performance test using the material volatility characteristic testing device 100 according to an embodiment of the present application will be described in detail below.

[0057] During the first test, before conducting the test, a sample can be placed in the test chamber 11, and then the heat storage chamber 40 and the test chamber 11 can be evacuated. For example, the exhaust valve 821 and the valves 6131 and 6121 located on the air inlet side of the vacuum pumping component 50 can be opened, and the vacuum pumping component 50 can be started to evacuate the heat storage chamber 40 and the test chamber 11.

[0058] When the vacuum degree in the test chamber 11 reaches the preset vacuum degree, the exhaust valve 821, the valve 6131 located on the air inlet 51 side of the vacuum pumping component 50, the valve 6121, and the vacuum pumping component 50 are closed, and the heating component 20 is turned on to heat the test chamber 11 to carry out the material volatility performance test.

[0059] When the test is completed, the heating element 20 is first turned off, and then the high-temperature gas in the test chamber 11 is sent to the heat storage chamber 40 for storage through the thermal circulation mechanism. This process may include the following: open the valve 6121 located on the air inlet 51 side of the vacuum element 50 and the valve 6131 located on the air outlet 52 side of the vacuum element 50, start the vacuum element 50, and at this time the high-temperature gas in the test chamber 11 flows along the pipeline into the heat storage chamber 40.

[0060] When the heat storage chamber 40 reaches a saturated state (for example, the vacuum degree is 1.0×10 -6 pa), the valve 6121 located on the air inlet 51 side of the vacuum component 50, the valve 6131 located on the air outlet 52 side of the vacuum component 50, and the vacuum component 50 are closed, and the high-temperature gas completes the flow process from the test chamber 11 to the heat storage chamber 40.

[0061] The remaining high-temperature gas in the test chamber 11 can then be pumped into the spiral pipe 81 using the vacuum pump 50. Open the valve 6121 and valve 821 located on the air inlet 51 side of the vacuum pump 50 to start the vacuum pump 50. At this time, the high-temperature gas in the test chamber 11 flows into the spiral pipe 81 along the pipe. Afterwards, close the valve 6121 and valve 821 located on the air inlet 51 side of the vacuum pump 50, and close the vacuum pump 50. It is easy to understand that most of the high-temperature gas in the test chamber 11 is sent to the heat storage chamber 40 for storage, and a portion of the high-temperature gas in the test chamber 11 flows into the spiral pipe 81 to heat the cooling chamber 70, thereby increasing the temperature of the cooling chamber 70. Since the cooling chamber 70 is located outside the heat storage chamber 40, increasing the temperature of the cooling chamber 70 is conducive to preventing the temperature in the heat storage chamber 40 from dropping rapidly, thereby having a heat preservation effect on the heat storage chamber 40.

[0062] Afterwards, when the temperature of the cooling chamber 70 rises, since the test chamber 11 is now in a negative pressure state, gas from the external environment can be sent into the test chamber 11 to quickly cool the test chamber 11. The process of the external environment gas entering the test chamber 11 is as follows: the valve 6121 located on the air inlet 51 side of the vacuum pumping member 50 and the valve 821 on the connecting pipe 82 are opened. Since the interior of the test chamber 11 is in a negative pressure state, the external environment gas, under the action of the air pressure, enters the spiral pipe 81, the connecting pipe 82, the first pipe 611 located on the air inlet 51 side of the vacuum pumping member 50, and the second pipe 612 located on the air inlet 51 side of the vacuum pumping member 50 in sequence, and flows into the test chamber 11. After the high-temperature gas is delivered to the heat storage chamber 40, the temperature of the test chamber 11 decreases. As the ambient air enters the test chamber 11, it is cooled within the spiral conduit 81 before re-entering the test chamber 11, which helps to rapidly reduce the temperature within the test chamber 11. After a short period of time, the ambient air no longer enters the test chamber 11, and the pressure within the test chamber 11 is equal to the ambient pressure. At this point, the lid 104 is opened, and the sample on the sample support 111 is removed from the opening 103.

[0063] After the next test begins, the sample is first placed in the test chamber 11. Next, the lid 104 is closed, and the test chamber 11 is evacuated to a preset vacuum level. The high-temperature gas stored in the heat storage chamber 40 is then returned to the test chamber 11. The specific operation may include closing the valve 6121 located on the air inlet 51 side of the vacuum pumping member 50, the exhaust valve 821 on the exhaust pipe 62, and the vacuum pumping member 50; opening the valve 6131 located on the air inlet 51 side of the vacuum pumping member 50 and the valve 6121 located on the air outlet 52 side of the vacuum pumping member 50; and starting the vacuum pumping member 50 to allow the high-temperature gas in the heat storage chamber 40 to flow through the third pipe 613 located on the air inlet 51 side of the vacuum pumping member 50, the first pipe 611, the first pipe 611, and the second pipe 612 located on the air outlet 52 side of the vacuum pumping member 50, and enter the test chamber 11.

[0064] After the high-temperature gas in the heat storage chamber 40 is returned to the test chamber 11, the valve 6131 located on the air inlet 51 side of the vacuum pumping part 50 and the valve 6121 located on the air outlet 52 side of the vacuum pumping part 50 are closed, and the test chamber 11 is evacuated by the vacuum pumping part 50. When the vacuum degree reaches the preset vacuum degree, the vacuuming is stopped, and the test chamber 11 is heated to carry out the material volatility performance test. Among them, after closing the corresponding valves and the vacuum pumping part 50, the heating part 20 can be directly turned on to heat the test chamber, or the heating part 20 can be turned on to heat after keeping the chamber warm for a period of time. In the actual test process, whether to keep the chamber warm for a period of time can be selected according to the temperature of the current test. After the test is completed, the above-mentioned related operations can be repeated to repeat the test again.

[0065] After the test is completed, the embodiment of the present application uses a thermal cycle mechanism to extract the high-temperature gas from the test chamber 11, and uses a cooling pipeline to allow external gas to enter the test chamber 11. This can quickly reduce the temperature inside the test chamber 11, thereby reducing the sample cooling time and improving cooling efficiency. Before the test begins, the embodiment of the present application uses a thermal cycle mechanism to return the high-temperature gas in the heat storage chamber 40 to the test chamber 11, fully utilizing the heat in the high-temperature gas to heat the sample, thereby reducing the sample heating time and saving electricity.

[0066] When conducting a material volatility test, the test chamber 11 needs to be heated to raise its temperature. During this process, components within the test chamber 11 release gas, causing the vacuum level within the test chamber 11 to drop. If heating is performed at a preset heating rate and vacuuming is performed at a preset vacuuming rate, the test chamber 11 may experience a high temperature and a low vacuum level. In this case, the sample within the test chamber 11 may be easily oxidized, resulting in inaccurate results from the material volatility test.

[0067] In response to the above technical problems, an embodiment of the present application further provides a monitoring and control system for a material volatility characteristics testing device 100 .

[0068] As shown in Figure 4, the monitoring and control system 200 may include a programmable controller 210, which is used to receive the temperature value measured by the temperature measuring component 201 and the vacuum value measured by the vacuum measuring component 30, and control the heating power of the heating component 20 and the vacuum power of the vacuum component 50 according to the temperature value and the vacuum value.

[0069] The monitoring and control system 200 provided in the embodiment of the present application uses a programmable controller 210 to control the heating power of the heating element 20 and the vacuum power of the vacuum element 50 according to the temperature value and the vacuum degree. Since the temperature and the vacuum degree are taken into consideration at the same time, it is beneficial to avoid the simultaneous occurrence of high temperature and low vacuum degree in the test chamber 11, thereby preventing the sample from being oxidized under low vacuum conditions.

[0070] In some embodiments, the heating power of the heating element 20 and the vacuum power of the vacuum element 50 are controlled according to the temperature value and the vacuum value, including: when the temperature value is lower than the test temperature value and higher than the preset temperature threshold, if the vacuum degree is greater than the preset air pressure threshold, the heating power of the heating element 20 is reduced and / or the vacuum power of the vacuum element 50 is increased.

[0071] As mentioned above, when the test chamber 11 is heated to raise its temperature to a certain temperature, the structural parts in the test chamber 11 will release gas to the outside, causing the vacuum degree of the test chamber 11 to decrease. The embodiment of the present application can reduce the heating speed by reducing the heating power of the heating element 20, which is conducive to the vacuum element 50 to extract the gas in the test chamber 11 from the test chamber 11 without significantly increasing the temperature. The embodiment of the present application can increase the vacuuming speed by increasing the power of the vacuum element 50, which is conducive to the vacuum element 50 to quickly extract the gas in the test chamber 11 from the test chamber 11. It can be seen that the embodiment of the present application can avoid the simultaneous occurrence of high temperature and low vacuum degree in the test chamber 11 through the programmable controller 210.

[0072] In some embodiments, before using the material volatility characteristic testing device 100 to conduct the material volatility characteristic test, the test temperature and the heating rate can be set in the programmable controller 210. When the test starts, the programmable controller 210 first controls the vacuum pump 50 to vacuum the material volatility characteristic testing device 100 at a first vacuum power; when the vacuum degree reaches a threshold value (the threshold value can be, for example, 10 -8When the temperature value measured by the temperature measuring component 201 reaches a preset temperature (e.g., 150° C.), the programmable controller 210 controls the vacuum component 50 to vacuum the material volatility characteristics testing device 100 at a third vacuum power, wherein the third vacuum power is greater than the second vacuum power. Meanwhile, the heating power of the heating component 20 is kept unchanged, and baking is performed for a preset time (e.g., 2 to 3 hours) to enable the structural components of the test chamber 11 to release more gas at a low temperature. After baking, the programmable controller 210 controls the heating component 20 to heat the test chamber 11 to the test temperature. At this time, the programmable controller 210 controls the power of the vacuum component 50 according to the vacuum value measured by the vacuum measuring component 30, so that the vacuum degree in the test chamber 11 is maintained above but less than the preset vacuum degree threshold.

[0073] In some embodiments, the programmable controller 210 may be a programmable logic controller (PLC). In some embodiments, the programmable controller 210 controls other devices by writing a control program on programming software.

[0074] Referring to FIG. 4 , in some embodiments, the monitoring and control system 200 may further include an IoT communication module 220. The programmable controller 210 can communicate with a cloud platform via the IoT communication module 220 to transmit the temperature values ​​measured by the temperature measuring element 201 and the vacuum value measured by the vacuum measuring element 30 to the cloud platform, and to receive remote control commands. The programmable controller 210 can implement remote monitoring and control via the IoT communication module 220, and can also perform remote real-time monitoring and data analysis via the cloud platform.

[0075] In some embodiments, the programmable controller 210 can be connected to the Internet of Things communication module 220 through a serial port interface of a serial port protocol.

[0076] In other embodiments, the programmable controller 210 may also use an Ethernet protocol to communicate with the IoT communication module 220. For example, the programmable controller 210 may be connected to a network switch or router to achieve communication with the IoT communication module 220.

[0077] In other embodiments, the programmable controller 210 may also use wireless technology to communicate with the Internet of Things communication module 220. Wireless technologies include Wi-Fi, Bluetooth, ZigBee, etc. For example, the programmable controller 210 and the Internet of Things communication module 220 may be communicated via Bluetooth.

[0078] In other embodiments, the programmable controller 210 may also communicate with the Internet of Things communication module 220 using the Message Queue Telemetry Transport Protocol (MQTT protocol).

[0079] In some embodiments, the material volatility characteristics testing device 100 may further include a control cabinet (not shown in the drawings), in which both the programmable controller 210 and the IoT communication module 220 are installed. In some embodiments, the monitoring and control system 200 may further include a button 2101 for selecting whether to control the material volatility characteristics testing device 100 using the programmable controller 210.

[0080] In some embodiments, the material volatility characteristics testing device 100 further includes a ventilation system (not shown in the drawings), which is disposed in a control cabinet. The programmable controller 210 is also used to control the start and stop of the ventilation system.

[0081] In some embodiments, the material volatility characteristics testing device 100 may further include an air switch (not shown in the drawings) for controlling the start and stop of the ventilation system. In some embodiments, the programmable controller 210 is electrically connected to the air switch. The air switch can control the start and stop of the ventilation system based on control signals from the programmable controller 210 to prevent components and instruments within the control cabinet from being affected by elevated temperatures.

[0082] Referring to FIG. 4 , in some embodiments, the monitoring and control system 200 may further include a remote data acquisition and control module (remote I / O module) 230. The vacuum measurement unit 30 is electrically connected to the remote data acquisition and control module 230, which is in turn electrically connected to the programmable controller 210 via industrial Ethernet. The transmission of control and measurement signals between the vacuum measurement unit 30 and the programmable controller 210 via industrial Ethernet significantly reduces wiring and improves the stability of the monitoring and control system.

[0083] 4 , in some embodiments, the monitoring and control system 200 may further include a touch screen 240 , which is electrically connected to the programmable controller 210 . The touch screen 240 is used to input a test temperature value, a heating rate, or display the temperature value measured by the temperature measuring element 201 .

[0084] In some embodiments, the touch screen 240 and the programmable controller 210 are electrically connected via a serial port and communicate with each other via a serial communication protocol (Modbus protocol).

[0085] In some embodiments, data can be transmitted between the programmable controller 210 and the touch screen 240 via a serial port, wherein the transmitted data may include control instructions and status data.

[0086] 4 , in some embodiments, the material volatility characteristic testing device 100 may further include a temperature control component 202 , which is used to adjust or maintain the heating power of the heating component 20 .

[0087] In some embodiments, the programmable controller 210 is electrically connected to the temperature control element 202 , and the temperature control element 202 adjusts or maintains the heating power of the heating element 20 according to a control signal sent by the programmable controller 210 .

[0088] 4 , in some embodiments, the material volatility characteristic testing device 100 may further include a voltage regulator 203 , which is electrically connected to the temperature control element 202 . The temperature control element 202 adjusts or maintains the heating power of the heating element 20 via the voltage regulator 203 .

[0089] In some embodiments, the temperature measuring element 201 can convert the measured temperature value into an electrical signal and transmit it to the temperature control element 202; the temperature control element 202 can read the electrical signal transmitted by the temperature measuring element and adjust or maintain the heating power of the heating element 20 through the voltage regulator 203 according to the control signal issued by the programmable controller 210.

[0090] In some embodiments, the material volatility characteristics testing device 100 may include a voltage measuring element 204 and a current measuring element 205. The voltage measuring element 204 and the current measuring element 205 are electrically connected to the heating element 20 and are used to measure the voltage of the heating element 20 and the current flowing through the heating element 20, respectively. The values ​​measured by the voltage measuring element 204 and the current measuring element 205 can be displayed on the touch screen 240 or sent to the cloud platform via the Internet of Things communication module 220.

[0091] The voltage measuring device 204 and the current measuring device 205 can be electrically connected to the programmable controller 210, so that the programmable controller 210 can read the data measured by the voltage measuring device 204 and the current measuring device 205. The voltage measuring device 204 can be a voltmeter, and the current measuring device 205 can be an ammeter.

[0092] In some embodiments, the programmable controller 210 can be configured to have a temperature alarm function. When the temperature measured by the temperature measuring device 201 exceeds the set range, the alarm function is triggered. Through the alarm, relevant personnel are reminded to handle the situation, thereby avoiding safety accidents caused by excessive temperature.

[0093] In some embodiments, the material volatility characteristics testing device 100 may further include an air intake pipeline (not shown in the drawings), which is used to fill gas into the material volatility characteristics testing device 100 to facilitate other tests.

[0094] In some embodiments, the material volatility characteristics testing device 100 may further include a pressure measuring device 113 and a flow measuring device (not shown in the drawings). The pressure measuring device 113 is used to measure the pressure in the material volatility characteristics testing device 100 after the gas is filled, and the flow measuring device is used to measure the flow rate of the gas filled into the material volatility characteristics testing device 100 through the air inlet pipe.

[0095] In some embodiments, both the pressure measuring device 113 and the flow measuring device can be electrically connected to the programmable controller 210. Specifically, both the pressure measuring device 113 and the flow measuring device can be electrically connected to the programmable controller 210 via the remote acquisition and control module 230. The pressure measuring device 113 can be, for example, a pressure gauge. The flow measuring device can be, for example, a flow meter.

[0096] In some embodiments, the values ​​measured by the pressure measuring element 113 and the flow measuring element can be displayed on the touch screen 240, or sent to the cloud platform through the Internet of Things communication module 220. The monitoring and control system 200 provided in the embodiment of the present application electrically connects the touch screen 240 to the programmable controller 210, so that the touch screen 240 can display various data when the material volatility characteristic testing device 100 is working, thereby reducing the time consumed by observing and recording multiple display tables. The monitoring and control system 200 provided in the embodiment of the present application monitors and controls the material volatility characteristic testing device 100 through the programmable controller 210 and the Internet of Things communication module 220, and can realize remote real-time monitoring of various parameters of the material volatility characteristic testing device 100 when it is working, so that abnormal conditions can be discovered and handled in a timely manner, thereby improving the convenience and safety of operation.

[0097] 4 , in some embodiments, the material volatility characteristics testing device 100 may further include a vacuum control component 501, which is used to control the opening or closing of the vacuum component 50 and to adjust or maintain the power of the vacuum component 50. In some embodiments, the vacuum control component 501 may be a contactor.

[0098] In some embodiments, the vacuum control component 501 is electrically connected to the programmable controller 210. The vacuum control component 501 controls the vacuum control component 501 to open or close the vacuum component 50 and adjust or maintain the power of the vacuum component 50 according to the control signal sent by the programmable controller 210.

[0099] In some embodiments, the temperature control component 202, the vacuum control component 501, the voltage measurement component 204, the current measurement component 205, and the button 2101 are all arranged in a control cabinet.

[0100] In some embodiments, the temperature measuring element 201 is disposed in the test chamber 11 to measure the temperature in the test chamber 11. In some embodiments, the temperature measuring element 201 may be a thermocouple.

[0101] Referring to FIG. 1 , in some embodiments, a material volatility characteristics testing apparatus 100 may include a sample support 111 disposed within a test chamber 11 for placing a sample. Sample support 111 may be made of a high-temperature resistant material to withstand the high-temperature environment within the test chamber 11. In some embodiments, the high-temperature resistant material used to manufacture sample support 111 may be molybdenum metal.

[0102] Referring to Figure 1 , in some embodiments, the heating element 20 may include a plurality of strip-shaped electric heating elements 20 spaced apart along the axial direction of the test chamber 11. The heating elements 20 may be made of a high-temperature resistant material to withstand the high temperatures within the test chamber 11. In some embodiments, the high-temperature resistant material used to manufacture the heating elements 20 may be molybdenum. Molybdenum metal not only withstands high temperatures but also offers advantages such as uniform electrical resistance, stable heat generation, and a long service life.

[0103] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include a heat storage chamber 40 and a connecting pipe 61. The connecting pipe 61 is used to controllably connect the heat storage chamber 40 and the test chamber 11. A vacuum pump 50 is disposed on the connecting pipe 61 and is used to controllably pump high-temperature gas from the test chamber 11 into the heat storage chamber 40, or vice versa. The vacuum pump 50 may be a vacuum pump.

[0104] In some embodiments, the programmable controller 210 is further configured to control the connecting pipe 61 to connect the heat storage chamber 40 and the test chamber 11 after a test is completed, and to control the vacuum pump 50 to pump the high-temperature gas in the test chamber 11 into the heat storage chamber 40 for storage; and to control the connecting pipe 61 to connect the heat storage chamber 40 and the test chamber 11 before the next test begins, and to control the vacuum pump 50 to pump the high-temperature gas stored in the heat storage chamber 40 back into the test chamber 11. After a test is completed, the programmable controller 210 controls the vacuum pump 50 to pump the high-temperature gas in the test chamber 11 into the heat storage chamber 40 for storage, thereby rapidly cooling the test chamber 11; and before the next test begins, the programmable controller 210 controls the high-temperature gas stored in the heat storage chamber 40 to enter the test chamber 11, thereby utilizing the heat of the high-temperature gas to heat the sample in the test chamber 11.

[0105] 1 , in some embodiments, the heat storage chamber 40 and the testing chamber 11 are not connected to each other.

[0106] In some embodiments, the vacuum member 50 may also be used to vacuum the heat storage chamber 40 and / or the test chamber 11 .

[0107] As shown in FIG2 , in some embodiments, the connecting pipeline 61 may include two first pipelines 611, two second pipelines 612, and two third pipelines 613. The vacuum pump 50 may be disposed between the two first pipelines 611. One end of each second pipeline 612 may be connected to one of the first pipelines 611 via a valve 6121, and the other end of each second pipeline 612 may be in communication with the test chamber 11. One end of each third pipeline 613 may be connected to a first pipeline 611 via a valve 6131, and the other end of each third pipeline 613 may be in communication with the heat storage chamber 40.

[0108] Referring to FIG. 2 , in some embodiments, the vacuum member 50 may be provided with an air inlet 51 and an air outlet 52. Gas may enter the vacuum member 50 through the air inlet 51 and exit the vacuum member 50 through the air outlet 52. Two first pipelines 611 may be respectively connected to the air inlet 51 and the air outlet 52 of the vacuum member 50. With this configuration, the vacuum member 50 may be used to deliver gas from the test chamber 11 to the heat storage chamber 40, or vice versa.

[0109] In some embodiments, a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air inlet 51 or the air outlet 52, that is, a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air inlet 51, or a three-way pipe can be used to replace the second pipe 612 and the third pipe 613 connected to the air outlet 52.

[0110] 1 and 2 , in some embodiments, the material volatility characteristics testing device 100 may further include an exhaust line 62 , which may controllably connect the external environment to the connecting line 61 to discharge the gas extracted by the vacuum element 50 to the external environment.

[0111] 2 , in some embodiments, one end of the exhaust line 62 may be connected to the first line, and the other end of the exhaust line 62 may be connected to the external environment; an exhaust valve 621 may also be provided on the exhaust line 62 to achieve controlled conduction of the exhaust line 62 .

[0112] The exhaust pipe 62 may be connected to the first pipe at one side of the air outlet of the vacuum pumping member 50 , so that the vacuum pumping member 50 can be used to evacuate the test chamber 11 or the heat storage chamber 40 .

[0113] In some embodiments, the programmable controller 210 is also used to control the on and off of each valve.

[0114] 2 and 4 , in some embodiments, the material volatility characteristics testing device 100 may further include a valve control component 502 for controlling the opening and closing of valves on the connecting pipeline 61 and the exhaust pipeline 62. In some embodiments, the valve control component 502 is electrically connected to the programmable controller 210 and can control the opening and closing of the valves on the connecting pipeline 61 and the exhaust pipeline 62 based on control signals from the programmable controller 210.

[0115] 1 , in some embodiments, a material volatility characteristic testing device 100 may include an outer shell 10 , in which a testing chamber 11 and a heat storage chamber 40 are formed.

[0116] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include: a first shell 12 and a second shell 13 disposed in the outer shell 10, the first shell 12 being disposed radially inwardly of the second shell 13, the first shell 12 being configured to form a test chamber 11, and a heat storage chamber 40 being formed between the first shell 12 and the second shell 13.

[0117] 1 and 2 , the outer shell 10 has openings 103 formed at both axial ends thereof, communicating with the test chamber 11 for placing and removing samples. The outer shell 10 also includes two covers 104 for opening or closing the openings 103. As will be readily understood, with this arrangement, when the covers 104 are opened, the heat storage chamber 40 remains sealed.

[0118] As shown in FIG. 1 , in some embodiments, the outer shell 10 includes a cylinder 102 and end plates 101 provided at both ends of the cylinder. An opening 103 is formed on the end plate 101 and a cover 104 is provided.

[0119] 1 and 2 , in some embodiments, the material volatility characteristic testing device 100 may further include a cooling chamber 70 . The cooling chamber 70 contains a coolant for reducing the temperature of the outer shell 10 .

[0120] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include a coolant supply 90 , which may be used to provide coolant to the cooling chamber 70 .

[0121] In some embodiments, the coolant supply member 90 may include a liquid storage tank 91 and a driving member 92. The liquid storage tank 91 defines a coolant storage chamber 911 for supplying coolant. The driving member 92 may be configured to drive the coolant to circulate within the coolant storage chamber 911 and the cooling chamber 70. The driving member 92 may be a flow agitator comprising a motor and an impeller.

[0122] In some embodiments, the driving member 92 is electrically connected to the programmable controller 210 , and the programmable controller 210 is also used to control the opening or closing of the driving member 92 .

[0123] 1 , in some embodiments, the coolant supply member 90 may further include two coolant circulation lines 93 , through which the coolant can circulate in the coolant storage chamber 911 and the cooling chamber 70 . In some embodiments, the drive member 92 may be connected to one of the coolant circulation lines 93 .

[0124] 1 , in some embodiments, a liquid storage tank 91 may be disposed below the outer housing 10. In some embodiments, the coolant supply member 90 may further include a plurality of heat sinks 94, which may be disposed on the sidewalls of the liquid storage tank 91 to cool the liquid storage tank 91. In some embodiments, the heat sinks 94 may be heat fins.

[0125] 1 , in some embodiments, the material volatility characteristics testing apparatus 100 may further include a cooling pipeline disposed within the cooling chamber 70. The cooling pipeline may be in controlled communication with the test chamber 11, such that external air can enter the test chamber 11 through the cooling pipeline to cool the test chamber 11.

[0126] Referring to FIG. 1 , in some embodiments, the cooling circuit may include a spiral tube 81 and a connecting tube 82 . The spiral tube 81 may extend spirally within the cooling chamber 70 , with one end of the spiral tube 81 extending through the cooling chamber 70 and out of the outer shell 10 . The other end of the spiral tube 81 may be connected to the connecting tube 82 , which may be connected to the first tube 611 . The connecting tube 82 may be provided with a valve 821 . Specifically, to enable the vacuum pump 50 to draw high-temperature gas from the test chamber 11 into the spiral tube 81 , the connecting tube 82 may be connected to the first tube 611 on the gas outlet 52 side of the vacuum pump 50 .

[0127] The valve control element 502 can be used to control the opening and closing of the valve 821 , so that the programmable controller 210 can control whether the cooling line is connected to the test chamber 11 .

[0128] In some embodiments, the cooling cavity 70 may be an annular cavity formed radially outside the test chamber 11 , and the cooling pipeline may extend spirally in the annular cavity.

[0129] In some embodiments, the cooling cavity 70 is formed between the barrel 102 and the peripheral wall of the second shell 13 .

[0130] Referring to Figure 1 , in some embodiments, the test chamber 11 is a cylindrical chamber with a horizontally extending axis; the heat storage chamber 40 is an annular chamber disposed radially outward from the test chamber 11. The cooling chamber 70 is an annular chamber formed radially outward from the heat storage chamber 40. A portion of the high-temperature gas within the test chamber 11 can enter the cooling pipeline to heat the cooling chamber 70, raising the temperature of the cooling chamber 70 and preventing the high-temperature gas stored in the heat storage chamber 40 from rapidly decreasing in temperature.

[0131] The heat storage chamber 40 coincides with the axis of the testing chamber 11 .

[0132] 1 , in some embodiments, the material volatility characteristics testing device 100 may further include an insulation layer 112. The insulation layer 112 may be disposed on the peripheral wall of the test chamber 11 (i.e., the first housing 12) to insulate the test chamber 11. In some embodiments, the insulation layer 112 may be disposed on the inner side of the peripheral wall of the test chamber 11 or on the outer side of the peripheral wall of the test chamber 11.

[0133] In some embodiments, the heating element 20 is disposed in the test chamber 11. In some embodiments, the heating element 20 can be disposed inside the thermal insulation layer 112. In some embodiments, the heat storage chamber 40 can be disposed radially outside the test chamber 11.

[0134] 1 , in some embodiments, the insulation layer 112 may be made of a high-temperature resistant material to withstand the high-temperature environment in the test chamber 11 . The high-temperature resistant material used to manufacture the insulation layer 112 may be a molybdenum metal material.

[0135] In some embodiments, the first pipeline 611 may pass through the heat storage chamber 40 and the cooling chamber 70 and may extend to the outside of the outer shell 10 ; the vacuum element 50 is connected to the first pipeline 611 outside the outer shell 10 .

[0136] In some embodiments, the second pipe 612 may penetrate the thermal insulation layer 112 and communicate with the test chamber 11. In some embodiments, the third pipe 613 may be located in the heat storage chamber 40.

[0137] Referring to FIG. 5 , in some embodiments, the volatility characteristics testing apparatus may further include a sample cooling member 300 and a sample transport member 700. The sample cooling member 300 forms a sample cooling chamber 302 capable of cooling the sample. The sample cooling chamber 302 can be interconnected with or isolated from the test chamber 11. The sample transport member 700 is configured to reciprocate linearly between the test chamber 11 and the sample cooling chamber 302 when the sample cooling chamber 302 is interconnected with the test chamber 11, thereby transporting the sample in the test chamber 11 to the sample cooling chamber 302 for rapid cooling. By providing the sample cooling chamber 302 and the sample transport member 700, high-temperature samples after testing can be transferred to the sample cooling chamber 302 for rapid cooling, thereby shortening sample retrieval time and ensuring online sample placement and retrieval while maintaining uninterrupted testing.

[0138] In some embodiments, as shown in FIG6 , the sample transport member 700 includes a sealed housing 703, a clamping portion, a moving portion, and an operating portion. The sealed housing 703 is external to the sample cooling chamber 302 and communicates with the sample cooling chamber 302. The clamping portion is disposed within the sample cooling chamber 302 and is used to clamp the sample. One end of the moving portion is disposed within the sealed housing 703, while the other end extends into the sample cooling chamber 302 and is movable relative to the sealed housing 703. This portion is used to drive the clamping portion to reciprocate linearly between the test chamber 11 and the sample cooling chamber 302, and to drive the clamping portion to clamp or release the sample. The operating portion is disposed external to the sample cooling chamber 302 and is operable to drive the moving portion to move. In this embodiment, the interior of the sample cooling chamber 302 is sealed while simultaneously enabling the movement of the sample transport member 700 and sample placement operations.

[0139] In some embodiments, the moving portion includes a tube 704 and a rod 705 disposed within the tube 704. The operating portion may include a tube operating portion and a rod operating portion, each configured to drive the tube 704 and the rod 705 to reciprocate. The clamping portion includes two opposing clamping claws 7021 and a clamping mating member 7022. The two clamping claws 7021 are fixedly connected to the tube 704; the clamping mating member 7022 is fixedly connected to the rod 705. Both clamping claws 7021 are hingedly connected to the clamping mating member 7022 via a connecting rod 7024. Thus, the clamping claws 7021 can be opened or closed by moving the rod 705 relative to the tube 704. In such an embodiment, the structure of the sample transport member 700 facilitates movement and operation of the sample transport member 700 outside the sample cooling chamber 302.

[0140] In some embodiments, the tube operating portion includes a first operating ring 707 movably mounted radially outside the sealed housing 703 and a first magnetic member 7091 disposed within the first operating ring 707. The sample transport 700 further includes a first mating magnetic member 7092 fixedly connected to the tube 704, such that the first magnetic member 7091 and the first mating magnetic member 7092 act magnetically to cause the tube 704 to move when the first operating ring 707 moves. Similarly, the rod operating portion includes a second operating ring 708 movably mounted radially outside the sealed housing 703 and a second magnetic member 7093 disposed within the second operating ring 708. The sample transport 700 further includes a second mating magnetic member 7094 fixedly connected to the rod 705, such that the second magnetic member 7093 and the second mating magnetic member 7094 act magnetically to cause the rod 705 to move when the second operating ring 708 moves. In such an embodiment, it is helpful to ensure the sealing of the sample cooling chamber 302, so that the sample cooling chamber 302 can have a high vacuum degree, thereby preventing the sample from being oxidized before its temperature drops to room temperature.

[0141] In some embodiments, the first magnetic member 7091, the first cooperating magnetic member 7092, the second magnetic member 7093 and the second cooperating magnetic member 7094 are strong permanent magnets. When the first magnetic member 7091 and the second magnetic member 7093 move a small angle relative to the first cooperating magnetic member 7092 and the second cooperating magnetic member 7094, the attractive force changes from the original vertical direction to an angled resultant force, generating a horizontal component force that pushes the inner tube member 704 and the rod member 705 to move.

[0142] In some embodiments, the sample transport member 700 further includes a first locking member 7095 and a second locking member 7096 for respectively locking the first operating ring member 707 and the second operating ring member 708 to prevent them from moving relative to the sealed housing 703. In some embodiments, the sample is placed in the sample holder, and the clamping claw 7021 can form a clamping matching groove 70211 having a shape that matches the sample holder to clamp the sample holder, thereby driving the sample holder to move.

[0143] In some embodiments, the clamping portion further includes a compression spring 7023 sleeved on the clamping fitting 7022 for providing a clamping pre-tightening force to ensure that the sample holder does not shake when clamped, thereby preventing the clamped sample holder from falling off.

[0144] In some embodiments, the sample transport member 700 further includes a sealing flange 706, through which the sealing housing 703 communicates with the sample cooling chamber 302. The sealing flange 706 is provided with a pressure differential balancing gap. When the sample cooling chamber 302 begins to be evacuated, a pressure differential is generated between the sealing housing 703 and the sample cooling chamber 302. The pressure can be balanced through the pressure differential balancing gap, thereby enabling the tube 704 and the rod 705 to be driven.

[0145] In some embodiments, the clamping claw 7021 and the clamping fitting 7022, the pipe 704, and the end of the rod 705 facing the clamping fitting 7022 are made of high-temperature nickel-based alloy. When using the clamping claw 7021 to take samples or set out samples, the influence of temperatures below 1000°C can be ignored.

[0146] In some embodiments, the sample support 111 is used to support multiple samples. The sample support 111 is rotatably disposed in the testing chamber 11 so that each sample can be aligned with the clamping claw 7021 of the sample transport component 700 .

[0147] It is easy to understand that when the sample support 111 supports multiple sample holders, and each sample holder holds multiple samples, the rotation of the sample support 111 can enable each sample holder to be aligned with the clamping claw 7021 of the sample transport member 700, so that it can be clamped and transported by the clamping claw 7021 of the sample transport member 700.

[0148] 7 , in some embodiments, the sample cooling unit 300 includes a carrier 3301 disposed in the sample cooling chamber 302 for carrying the sample, and a lifting assembly 301 for moving the carrier 3301. The lifting assembly 301 is configured to drive the carrier 3301 to move vertically up and down, thereby providing clearance for the sample transport unit 700 to reciprocate linearly between the testing chamber 11 and the sample cooling chamber 302, thereby preventing the carrier 3301 from interfering with the movement of the sample transport unit 700.

[0149] In some embodiments, the sample cooling member 300 further includes a chamber cooling member disposed radially outside the sample cooling cavity 302 for cooling the sample cooling cavity 302 to accelerate the cooling of the sample.

[0150] In some embodiments, the chamber cooling member forms a coolant flow cavity 3012, and the material volatility characteristics testing device 100 also includes a coolant containing cavity 3044 for providing a circulating coolant to the coolant flow cavity 3012 and a driving pump 3043 for driving the circulating flow of the coolant, thereby accelerating the cooling rate of the sample cooling cavity 302.

[0151] In some embodiments, referring to FIG8 , the material volatility characteristics testing apparatus further includes a gas supply unit 400 for providing an inert gas to the sample cooling chamber 302. The sample cooling chamber 300 further includes an air inlet line 3030 in fluid communication with the sample cooling chamber 302. The gas supply unit 400 supplies the inert gas to the sample cooling chamber 302 via the air inlet line 3030, thereby maintaining the pressure within the sample cooling chamber 302 at atmospheric pressure. It will be readily understood that before the sample is transferred from the test chamber 11 to the sample cooling chamber 302 via the sample transfer unit 700, the pressure within the sample cooling chamber 302 is negative. After the sample is transferred from the test chamber 11 to the sample cooling chamber 302, the passage between the test chamber 11 and the sample cooling chamber 302 is disconnected, and an inert gas (e.g., argon) is then introduced into the sample cooling chamber 302 to maintain the pressure within the sample cooling chamber 302 at atmospheric pressure (i.e., 1 standard atmosphere). Heat transfer through the inert gas is then utilized to cool the sample.

[0152] In some embodiments, the sample cooling member 300 further includes a gas cooling line 3011 disposed within the coolant flow cavity 3012. The gas supply member 400 is configured to allow the inert gas entering the sample cooling cavity 302 to circulate within the gas cooling line 3011 and the sample cooling cavity 302. This configuration allows the higher-temperature inert gas in the sample cooling cavity 302 to enter the gas cooling line 3011, be cooled by the coolant, and then return to the sample cooling cavity 302 to cool the sample, thereby further accelerating the cooling rate of the sample.

[0153] In some embodiments, referring to FIG8 , the gas supply unit 400 includes a first air inlet line 4020, a first air inlet valve 4022 and a pressure reducing valve 4023 disposed on the first air inlet line 4020, an air outlet line 4030, and an air outlet valve 4032 disposed on the air outlet line 4030. One end of the first air inlet line 4020 is connected to an inert gas tank, the other end of the first air inlet line 4020 is connected to one end of the air outlet line 4030, and the other end of the air outlet line 4030 is connected to the air inlet line 3030, thereby providing inert gas to the sample cooling chamber 302 through the first air inlet line 4020 and the air outlet line 4030.

[0154] In some embodiments, the gas supply component 400 further includes a second air inlet line 4010, a second air inlet valve 4012 disposed on the second air inlet line 4010, and a pump 4013. One end of the second air inlet line 4010 is connected to the gas cooling line 3011, and the other end of the second air inlet line 4010 is connected to the air outlet line 4030. Thus, when the first air inlet valve 4022 is disconnected, the second air inlet line 4010, the air outlet line 4030, and the pump 4013 can be used to enable the inert gas to circulate in the sample cooling chamber 302 and the gas cooling line 3011.

[0155] In some embodiments, the gas supply unit 400 further includes a pressure sensor 4015 for measuring the pressure in the sample cooling chamber 302. The pressure sensor 4015 can be disposed in the second air inlet line 4010.

[0156] In some embodiments, the sample cooling member 300 includes a first cylindrical member 3022 extending horizontally, a second cylindrical member 3023 extending coaxially with the first cylindrical member 3022 and radially inwardly of the first cylindrical member 3022, and two sealing end caps 3021 sealing the first cylindrical member 3022 and the second cylindrical member 3023 at the same ends thereof. The annular space between the first cylindrical member 3022 and the second cylindrical member 3023 forms the coolant flow chamber 3012, and the space radially inwardly of the first cylindrical member 3022 forms the sample cooling chamber 302.

[0157] The sealing end cap 3021 on the side facing the test chamber 11 forms a through hole communicating with the test chamber 11 . The sealing end cap 3021 on the side facing away from the test chamber 11 forms a through hole communicating with the sealing housing 703 .

[0158] In some embodiments, the sample cooling member 300 further includes a heat-insulating member 3013 disposed radially inwardly of the first cylindrical member 3022 and a heating member 3014 disposed radially inwardly of the heat-insulating member 3013. The heating member 3014 is used to preheat untested samples and to transport the preheated samples to the test chamber 11 via the sample transport member 700, thereby facilitating rapid heating of the samples to the test temperature within the test chamber 11.

[0159] In some embodiments, the thermal insulation member 3013 extends coaxially with the first cylindrical member 3022, and a gap is formed between the axial ends of the thermal insulation member 3013 and the axial ends of the first cylindrical member 3022 along the axial direction of the first cylindrical member 3022. A gap exists between the thermal insulation member 3013 and the first cylindrical member 3022 along its radial direction, thereby allowing the cooling energy within the coolant flow chamber 3012 to be transferred to the specimen cooling chamber 302 through the first cylindrical member 3022. The heating member 3014 extends coaxially with the first cylindrical member 3022, and a gap is formed between the axial ends of the heating member 3014 and the axial ends of the thermal insulation member 3013 along the axial direction of the first cylindrical member 3022, so that the thermal insulation member 3013 can provide heat insulation for the heating member 3014, thereby facilitating preheating of the specimen before testing and cooling of the specimen after testing.

[0160] In some embodiments, the test chamber 11 and the sample cooling chamber 302 can be evacuated using their own respective vacuum systems. The vacuum systems include a mechanical pump, a molecular pump, and an ion pump. Two mechanical pumps are used to pre-evacuate the test chamber 11 and the sample cooling chamber 302, respectively. Two molecular pumps are used to further evacuate the pre-evacuated test chamber 11 and the sample cooling chamber 302, respectively. Two ion pumps are used to evacuate the test chamber 11 and the sample cooling chamber 302 to an ultra-high vacuum state, respectively. In this embodiment, the ultra-high vacuum state refers to a pressure below 1×10 -6 Pa vacuum state.

[0161] Referring to Figure 5 , the material volatility testing device 100 may further include a cooling and collecting member 810 disposed within the testing chamber 11 for cooling and collecting components volatilized from the heated sample. The cooling and collecting member 810 may include a cooling member 811 and a collecting member 812 connected to the cooling member 811. The cooling member 811 is configured to cool the collecting member 812 using a circulating coolant. The collecting member 812 may be disposed directly above the sample support 111 to facilitate collection of components volatilized from the heated sample.

[0162] In some embodiments, the material volatility characteristics testing device 100 may further include a measuring element 820 for measuring the volatilization rate of the sample during heating. The measuring element 820 may be disposed in a channel connected to the test chamber 11. In some embodiments, the material volatility characteristics testing device 100 may further include a measurement cooling element 830 for cooling the measuring element 820. In some embodiments, the material volatility characteristics testing device 100 may further include a measurement moving element 840 for moving the measuring element 820 into the test chamber 11 for measurement.

[0163] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0164] The above description is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A material volatility characteristics testing device, comprising: A test chamber and a heating element for heating a sample in the test chamber, wherein the device further comprises: a heat storage chamber, not connected to the test chamber; and The thermal cycle mechanism is used to allow the high-temperature gas in the test chamber to enter the heat storage chamber for storage after the test is completed, so as to quickly cool the test chamber; and to allow the high-temperature gas stored in the heat storage chamber to enter the test chamber before the next test begins, so as to use the heat of the high-temperature gas to heat the sample in the test chamber.

2. The device according to claim 1, characterized in that The thermal cycle mechanism comprises: a connecting pipe, used for controllingly connecting the heat storage chamber and the test chamber; The exhaust component is provided in the connecting pipeline and is used to extract the high-temperature gas in the test chamber into the heat storage chamber; or to extract the high-temperature gas in the heat storage chamber into the test chamber.

3. The device according to claim 2, characterized in that The connecting pipeline includes: Two first pipelines, the air extraction member is arranged between the two first pipelines; two second pipelines, one end of each second pipeline being connected to one of the first pipelines via a valve, and the other end of each second pipeline being in communication with the test chamber; Two third pipelines, one end of each of the third pipelines is connected to the first pipeline through a valve, and the other end of each of the third pipelines is communicated with the heat storage chamber.

4. The device according to claim 2, characterized in that The vacuum element further evacuates the heat storage chamber and / or the test chamber; The thermal cycle mechanism further includes an exhaust pipe, which controllably connects the external environment with the connecting pipeline to discharge the gas extracted by the exhaust component to the external environment.

5. The device according to claim 1, characterized in that It also includes: a cooling cavity and a cooling pipeline arranged in the cooling cavity, The cooling pipeline is in controlled communication with the test chamber so that external air can enter the test chamber through the cooling pipeline to cool the test chamber.

6. The device according to claim 5, characterized in that The cooling cavity is an annular cavity formed radially outside the test chamber, and the cooling pipeline extends spirally in the annular cavity.

7. The device according to claim 5, characterized in that Also includes: A coolant supply component is used to provide coolant to the cooling cavity.

8. The device according to claim 7, characterized in that The coolant supply member includes: A coolant storage chamber, used for providing coolant; The driving member is used for driving the coolant to circulate in the coolant storage chamber and the cooling chamber.

9. The device according to claim 1, characterized in that Also includes: a heat-insulating layer, the heat-insulating layer being arranged on a peripheral wall of the test chamber and being used for heat-insulating the test chamber; The heating element is arranged on the inner side of the insulation layer; The heat storage chamber is arranged radially outside the test chamber.

10. The device according to claim 1, characterized in that Also includes: an outer shell, a first shell and a second shell disposed in the outer shell, wherein the first shell is disposed radially inward of the second shell, the first shell is configured to form the test chamber, and the heat storage chamber is formed between the first shell and the second shell; The two axial ends of the outer shell respectively form openings communicating with the test chamber for taking in and placing samples. The outer shell also includes two covers for opening or closing the openings.

11. A monitoring and control system for a material volatility characteristics testing device, the material volatility characteristics testing device comprising: A test chamber, a heating element for heating the test chamber, a temperature measuring element for measuring the temperature of the test chamber, a vacuuming element for evacuating the test chamber, and a vacuum measuring element for measuring the vacuum degree of the test chamber, wherein the system comprises: A programmable controller is used to receive the temperature value measured by the temperature measuring component and the vacuum value measured by the vacuum measuring component, and control the heating power of the heating component and the vacuuming power of the vacuuming component according to the temperature value and the vacuum value.

12. The system according to claim 11, wherein: The controlling of the heating power of the heating element and the vacuuming power of the vacuuming element according to the temperature value and the vacuum degree value comprises: When the temperature value is lower than the test temperature value and higher than the preset temperature threshold, if the vacuum degree is greater than the preset pressure threshold, the heating power of the heating element is reduced and / or the vacuuming power of the vacuuming element is increased.

13. The system according to claim 11, wherein: Also includes: An Internet of Things communication module, wherein the programmable controller is connected to the cloud platform for communication, so as to send the temperature value measured by the temperature measuring component and the vacuum value measured by the vacuum measuring component to the cloud platform through the Internet of Things communication module, and receive remote control instructions.

14. The system according to claim 13, wherein: The material volatility characteristic testing device also includes a control cabinet, The programmable controller and the Internet of Things communication module are both installed in the control cabinet.

15. The system according to claim 14, wherein: The material volatility characteristic testing device also includes a ventilation system, which is arranged in the control cabinet, and the programmable controller is also used to control the start and stop of the ventilation system.

16. The system according to claim 11, wherein: Also includes: A remote acquisition and control module, wherein the vacuum degree measuring component is electrically connected to the programmable controller via the remote acquisition and control module.

17. The system according to claim 11, wherein: Also includes: A touch screen is electrically connected to the programmable controller, and the touch screen is used to input a test temperature value, a heating rate, or display a temperature value measured by the temperature measuring component.

18. The system according to claim 11, wherein: The material volatility characteristic testing device further comprises: a temperature control component, the temperature control component being used to adjust or maintain the heating power of the heating component, The programmable controller is electrically connected to the temperature control element, and the temperature control element adjusts or maintains the heating power of the heating element according to the control signal sent by the programmable controller.

19. The system according to claim 11, wherein: The material volatility characteristic testing device further includes: a vacuum control component for controlling the opening or closing of the vacuum component and adjusting or maintaining the power of the vacuum component. The vacuum control component is electrically connected to the programmable controller. The vacuum control component controls the vacuum control component to open or close the vacuum component and adjust or maintain the power of the vacuum component according to a control signal sent by the programmable controller.

20. The system according to claim 11, wherein The material volatility characteristics testing device also includes: A heat storage chamber and a connecting pipe, wherein the connecting pipe is used to controllably connect the heat storage chamber and the test chamber. The vacuum pump is provided on the connecting pipeline, and is used to controllably pump the high-temperature gas in the test chamber into the heat storage chamber, or pump the high-temperature gas in the heat storage chamber into the test chamber; The programmable controller is also used to control the connecting pipe to connect the heat storage chamber and the test chamber after the test is completed, and control the vacuum pump to draw the high-temperature gas in the test chamber into the heat storage chamber for storage; and before the next test starts, control the connecting pipe to connect the heat storage chamber and the test chamber, and control the vacuum pump to draw the high-temperature gas stored in the heat storage chamber back into the test chamber.

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